Integrated Fuel Station Solutions

Company profile

Hunan Xianggong Construction Co., Ltd. is located in Xiangnan High-tech Park, Chenzhou Economic Development Zone, with a registered capital of 36 million yuan. It is the only high-tech enterprise and scientific and technological small and medium-sized enterprise in Hunan Province that integrates research and development, design, manufacture, sales, installation and engineering services of petrochemical products. The company's products with intelligent barrier and explosion-proof skid-mounted refueling devices have been included in the 2022 new product catalog by the Hunan Provincial Department of Industry and Information Technology. The company has complete qualifications, strong technical force, complete product range, advanced production technology, complete equipment, and perfect quality assurance system.The founder of the company has worked in the petrochemical industry and steel structure industry for more than 20 years. He has rich construction experience in the production and development of skid-mounted refueling devices, oil depots, gas station construction, equipment installation, process pipeline construction and steel grid structure. We also specialize in the production of SF double-layer oil tanks, barrier explosion-proof materials and double-layer composite pipelines. We have a professional production team in Chenzhou, Hunan.The founder of the company adheres to the vision of diligently thinking about raising a family, cultivating and serving the country, and promoting the upgrading of the new/alternative energy industry with the mission of deepening the petrochemical industry. Relying on the comprehensive technical experience advantages of storage tanks, skid-mounted filling devices, and filling stations, the company assisted the petrochemical industry in a full dimension to create a new comprehensive energy service model and build an energy terminal ecological chain.

steel structure

SF double-layer tank explosion-proof barrier

Materials

Double Layer Composite Plumber

Process Pipeline Construction

Skid-mounted gas station

LNNOVATION DRIVEN LEADS THE FUTURE

Innovation drives the future In today's ever-changing technology, we understand the importance of innovation. Therefore, we continue to increase R&D investment, introduce international advanced technology, and strive to develop more competitive and market-compliant heavy industry products. Our innovative strength has taken the entire industry to new heights.

Industry is the miracle of making human beings, and it is the best place to feel the power and beauty of industry. The company has many years of industry experience, and at present our factory has developed into the largest and most advanced technology model. We constantly strive for excellence and are committed to providing high-quality products and services to society.

We adhere to rigorous process requirements and exquisite manufacturing technology to ensure that each and every product meets the highest quality standards. From the procurement of raw materials to the production process, to quality inspection, we always strictly control, only to present the most perfect heavy industry boutique.

Excellent quality, stringing for perfection Green environmental responsibility As the development of heavy industry, it is inseparable from caring for the environment. We always adhere to the concept of green and environmentally friendly production, adopt advanced environmental protection technology, reduce energy consumption and emissions, and contribute to the realization of sustainable development. This is our responsibility to society and our commitment to the future.

Excellence in quality and excellence

GAS STATION PROFILE

Gas Station Project Brief

The gas station project is a comprehensive infrastructure construction project integrating oil storage, refueling and supporting services. The core is used to meet the refueling needs of motor vehicles (gasoline, diesel, etc.), taking into account the convenience of service functions, and is an indispensable supporting facility in the road traffic network.The project construction strictly follows the relevant norms of national safety production, environmental protection and energy conservation, and fire safety, covering the entire process of site planning, main structure, equipment installation, pipeline laying, supporting facilities construction, etc., to create a safe, efficient, environmentally friendly, and convenient fuel filling place, adapted to the layout of multiple scenarios such as suburbs, highways, township main roads, etc., taking into account practicality and compliance, to meet the filling needs of all types of motor vehicle users, and at the same time to help improve regional transportation support and economic development.

Gas Station Scenarios

Gas station construction scenarios focus on road traffic nodes. According to location characteristics and service needs, they are mainly divided into four categories, covering different use scenarios and adapting to diversified needs:

• Urban suburban/main road scenarios: Adapted to the edge of the city and both sides of the city's main roads, service commuter vehicles, private cars, supporting convenience stores, car washes and other convenience services, taking into account convenience and service diversity, to meet daily filling needs.
• Expressway service area scenarios: Designed for passing vehicles on expressways, with fast refueling and efficient passage behavior as the core, supporting simple rest areas, suitable for long-distance trucks, buses and private cars, to solve the pain points of fuel supply for long-distance travel.
• Township and rural scenarios: Layout in township main roads, urban-rural areas, service agricultural vehicles, private cars and passing vehicles, moderate in scale, simple in function, make up for the shortcomings of township transportation, and help facilitate rural travel.
• Special supporting scenarios: For vehicle concentration areas such as logistics parks, industrial parks, and large parking lots, special gas stations are built to focus on specific groups (such as logistics trucks and corporate commuter vehicles) to achieve accurate fuel supply and improve operational efficiency. Steel structure products steel structure characters

Steel Structure Products

The steel structure is mainly made of steel, which is one of the main types of building structures. Steel is characterized by high strength, light weight, good overall rigidity and strong deformation ability, so it is particularly suitable for the construction of large-span, super-high and super-heavy buildings. Steel structures are components such as steel beams, steel columns, steel trusses, etc., made of sectional steel and steel plates; structures with welds, bolts or rivets are used between each component or part.

The steel structure has developed vigorously in the public construction field. It is often used in factories and multi-storey houses, and has expanded to super high-rise buildings, large-span convention and exhibition centers, sports venues, large-scale transportation buildings, ports, docks, roads and bridges, fire stations, subways, high-speed rail and other places. At present, more than 1,000 super high-rise steel structures have been built and have been built, and the steel structure is developing in a higher, wider and lighter direction.

Steel Structure Characteristics

The steel structure construction process has strong nonlinear characteristics and is one of the main building structures. It consists of beams, columns, trusses and other components made of steel plates or sectional steel. Each component is connected by welding, bolting, riveting and other methods. It is widely used in super high-rise buildings, large-span buildings, bridges, tower mast structures, removable structures and structures that require light weight.

OIL TANK CHARACTERISTICS

OIL TANK PRODUCTS

Tank characteristics

• In the double-layer gap of the SF double-layer oil tank, a gas or detection liquid with a certain pressure, such as the leakage of the inner tank, will enter the normal pressure inner tank; the pressure or liquid level in the double-layer gap will change, triggering the sound and light alarm. After the storage liquid leaks into the double-layer gap, because the outer tank is intact, there is no need to worry about the leakage of the storage liquid.
• Gas or detection liquid with a certain pressure in the double-layer gap, if the outer tank leaks, it will enter the soil. The pressure or liquid level in the double-layer gap will change, triggering the sound and light alarm. Since the inner tank is intact, the storage liquid is safe and worry-free, and only gas or test liquid enters the soil.
• Because the storage liquid contacted by the inner tank and the soil and groundwater contacted by the outer tank belong to different media, the corrosion rate of the tank material is different, and the probability of leakage occurring at the same time is almost zero. Therefore, perfectly eliminating the leakage of liquid from the tank is a comprehensive solution to the hidden dangers of product safety and green environmental protection.

Double-Wall Tank Products

Oil tanks are equipment used for storing and transporting liquids such as petroleum, chemical, bioengineering, and their derivatives. The type and structure of oil tanks are closely related to their use and storage capacity. The oil tanks are divided into vertical oil tanks, circular oil tanks, spherical oil tanks, underground oil tanks and diaphragm oil tanks. They are mainly used for storing oil, refineries, fuels, new energy, waste products, biology, metallurgy, machinery, ports, terminals, aviation, medicine, etc., to provide enterprises with a green, environmentally friendly, energy-saving and safe storage and operating environment.

CHARACTERISTICS OF THE SKID MOUNTED REFUELING DEVICE

Skid-mounted refueling device characteristics

• The safe and reliable oil tank is equipped with explosion-proof materials that meet the standards. Once it encounters unexpected situations such as static electricity, open flames, lightning strikes, etc., there will be no explosion accidents. At the same time, an automatic alarm system and automatic control system are set up in the device, which can detect abnormal working conditions in time and carry out emergency treatment.
• The energy-saving and environment-friendly device is equipped with an oil and gas recovery system, an oil leakage monitoring system, an oil leakage recovery system, etc., to avoid environmental pollution caused by oil leakage and the like.
• The flexible configuration can be configured with different specifications of explosion-proof oil storage tanks and different specifications of oil dispensers according to customer needs; as well as refueling and unloading positions can be flexibly configured according to customer actual conditions.
• The appearance of the personalized device can be customized according to the user's requirements and combined with the characteristics of the environment to personalize the design to meet the different needs of customers.
• Affordable? Low investment cost, short station construction time, small footprint, wide application range, easy to move according to needs, high investment preservation rate.
• Easy maintenance The device adopts modular and assembly design, which is safe, simple and convenient for maintenance.
• Specifications The skid-mounted gas station has safety, environmental protection and mobility as its core concepts, and adopts an integrated design, with a small footprint, and a variety of specifications to choose from (10m3/20m3/30m3/40m3/50m3).

SKID MOUNTED REFUELING DEVICE PRODUCTS

Skid-mounted refueling device products

The explosion-proof skid-mounted refueling device is a movable ground refueling station that collects and stores fuel tanks, refueling machines, and alarm monitoring. The oil storage tank has undergone a barrier explosion-proof technical transformation. The barrier explosion-proof materials will be filled in the oil storage tank with flammable and explosive liquids in a fixed density manner. It will also be safe when it encounters open flames, static electricity, impact, lightning strikes, welding, and accidental violent impact accidents.With the characteristics of fireproof and explosion-proof, safety and environmental protection, small footprint, easy migration, etc., the products are widely used in passenger stations, bus stations, rental, automobile trade leasing, driving schools, mines, agricultural machinery cooperatives, ports, docks, airports, large construction sites, logistics, industrial parks, internal gas stations and other centralized places, providing enterprises with convenient internal refueling services.

PRODUCT ADVANTAGES

Product Advantages

• More professional — Group operation mode with steel structure production as the core industry
• Has strength — more than 60,000 square meters of production area for physical production enterprises
• Low prices — the closed loop of the industrial chain determines the absolute price advantage of the group
• Good quality — quality as life has established a huge quality inspection team ▲ construction project ▲ steel structure ▲ grid ▲ skid-mounted gas station ▲ large storage tank

APPLICATION SCOPE

APPLICATION RANGE

Education School Transportation Center Gymnasium Interpretation Aquarium Airport Subway Road Gas Station Activity Building Municipal Engineering Industrial Building Astronomy Power Energy High-speed Rail Hangar Watch Tower Hou Hall Theater Playground Steel Beam

steel structure

Gas Station Construction

Compliant construction • Eco-friendly and efficient • One-stop service for the whole process

Engineering and technical composition of the gas station

I. Main Structure and Site Foundation Technology

This is the “skeleton” of the entire gas station and determines the stability and resilience of the building.

• For different geological conditions (such as soft soil foundation, mountain foundation), the site foundation treatment technology adopts pile foundation, replacement cushion or strong tamping method to ensure the site bearing capacity and prevent uneven settlement. The ground is integrally laid with HDPE anti-seepage membrane + concrete anti-seepage layer to form a double-layer anti-seepage structure to prevent oil seepage from contaminating soil and groundwater.
• The oil shed structure technology mostly adopts a long-span steel truss or light steel frame structure with a fireproof and anti-corrosion coating to meet the requirements of wind resistance, earthquake resistance and lightning protection. The ceiling adopts flame-retardant color steel plate or aluminum-plastic plate, which has both heat insulation and waterproof functions, and reserves pipelines and lamp installation interfaces.
• Auxiliary building structures such as technical stations and convenience stores use reinforced concrete frame structures, exterior walls use fireproof thermal insulation materials, and indoor floors are treated with anti-static treatment. II. Oil storage and transportation technology This is the core function module of the gas station. The technical core is "safety, seepage prevention and environmental protection".
• The oil storage system technology adopts double-layer oil tanks (inner steel tank + outer FRP fiberglass tank), and leakage monitoring sensors are installed between the tank walls to monitor leakage in real time. The oil tank is equipped with a high level alarm, an emergency cut-off device, and a flame arrester to prevent oil and gas spills and fire risks. The ground of the oil tank area is designed to prevent seepage of the cofferdam, and the cofferdam volume is not less than the maximum single tank capacity, which can accommodate leaking oil products.
• The oil pipeline technology adopts a double-layer oil pipeline (inner layer pipe + outer layer PE pipe), and leakage detection lines are set between the pipelines, and the whole process is sealed and transported. The pipeline is buried and laid at a depth of not less than 0.5 meters. When crossing the road, casing protection is added. The interface is connected by welding + flange to ensure sealing.
• Oil and gas recovery technology Primary oil and gas recovery: When the tank is unloaded, the oil and gas discharged from the tank is recycled through a closed pipeline to the tanker truck to reduce volatilization. Secondary oil and gas recovery: When refueling the vehicle, recover the volatile oil and gas from the fuel tank through the tanker to the underground tank. Three times of oil and gas recovery: through the activated carbon adsorption or condensing device, the trace oil and gas discharged from the tank breathing valve is treated and discharged after reaching the standard.

Steel structure of gas station

The steel structure of the gas station is the core component of its main construction. It is mainly light steel structure, taking into account safety, practicality and economy. It is mainly used in the canopy, station building and ancillary facilities. The core structure includes two parts: First, the steel structure of the gas canopy. As the most important application scenario, the steel column (H-shaped steel or steel pipe column) and the steel beam (I-beam or truss structure) are used to build the main frame. The roof is paved with waterproof and fireproof color steel plates or aluminum-magnesium-manganese plates, which are mostly designed for long-span canting to ensure the openness of the refueling area. At the same time, the support system is equipped to ensure the overall stability;The second is the steel structure of the station building, which adopts a steel frame structure, with a combination of pressed steel plate and concrete floor and lightweight envelope structure, which can flexibly divide functional areas such as office and cashier. Some gas stations will integrate photovoltaic systems on the roof, which is in line with the concept of green and low-carbon.

Introduction to Steel Structure Technology for Gas Stations

Vigorously developing steel structure buildings is an important measure to promote the construction industry to achieve "carbon peak and carbon neutrality", and an important driving force for industrial transformation and upgrading and high-quality development. As one of the high-performance structural systems, high-strength steel structures have attracted much attention from researchers and the engineering community in recent years.Compared with conventional Q235 and Q355 steels, high-strength steels have higher unit mass strength. The use of high-strength steels instead of conventional steels in structural systems can reduce the cross-sectional size of components, reduce the self-weight of steel structures and the load of foundation parts, thereby effectively reducing the amount of steel used and reducing the carbon emissions of such structures. This is in line with the development strategy of China's new round of green, low-carbon and new-type building industrialization.

Steel Structure Advantages

Technical Introduction to Steel Grid Structures for Gas Station Roofs

Its core advantages are outstanding; First, it has a large span and no column design, which can flexibly cover the entire refueling area without affecting vehicle traffic and refueling operations;The second is light weight, good stiffness, uniform stress, can effectively resist severe weather such as high winds, rainstorms, earthquakes, etc. The structural stability is extremely convenient and efficient. The rods can be prefabricated in advance in the factory. The on-site assembly can shorten the construction period, and the later maintenance is simple. The fourth is the shape is simple and flat. It can be matched with flame retardant color steel plates, aluminum-plastic plates and other roof panels, which is both practical and beautiful. It is suitable for the site layout of various gas stations (high-speed, urban, town). At the same time, it can meet the safety requirements of fire, corrosion, and lightning protection. It perfectly fits the large span, strong safety, and easy application of gas stations.The design requirements of the worker's ceiling.

Fifth, it is beautiful and generous. The unique design of the steel structure grid makes it possible to achieve large-span architectural requirements, provide open indoor space, and be suitable for various large construction sites. Secondly, the streamlined design of the steel structure grid makes it a classic iconic building in the city while satisfying functionality.

The roof of the gas station can be constructed by a steel grid structure. The mainstream steel grid structure is a spatial mesh steel structure. It is composed of a number of high-strength steel rods (commonly used Q235 and Q355 steel). According to the grid rules of square and triangle, it is assembled by node connectors (bolt balls, welding balls) to form an overall stress system. The overall structure is flat or slightly curved. It is precisely due to the multiple ultra-stable characteristics of the structure and the flexibility of the shape unique to other structures. Structural internal forces are usually calculated using the matrix displacement method.

Technical Advantages of Steel Grid Structures

Steel Grid Structure Construction Process

The steel grid structure project is a bolt ball node mesh frame. Combined with the characteristics of the engineering grid frame, the grid frame installation is implemented; the advantages of the high-altitude bulk installation of the scaffold platform are reasonable stress and safe and reliable construction during the installation of the grid frame; the construction speed is fast and the construction period is short; the scaffold platform can also be used as a construction platform for roof panels, and one unit is multi-purpose.

• steel grid structure installation process: site three-way and one-flat→ member access→ crane access to the site→ steel column installation→ → roof beam installation roof support tie rod installation→ paint engineering → roof system installation→ wall system installation→ sporadic components installation→ decoration engineering→ construction end demolition construction equipment→ delivery.
• steel grid structure roofing system installation process: preparation of→ roofing girder installation correction→ roofing girder pressure rod support installation fixing→ gutter installation→ rain drainage pipe installation fixing.
• Roof beam connection procedure: Docking adjustment→ Mounting bolts Fixing and→ installing high-strength bolts→ High-strength bolts Initial tightening of→ high-strength bolts Final tightening of the→ seal.
• steel grid structure construction process: construction preparation,→ laying out, positioning, erecting→, assembling, scaffolding,→ resting,→ adjusting the lower chord ball elevation, assembling the lower chord, → assembling the middle chord rod and the web rod, → assembling the upper→ chord rod, and fastening the web rod to→ correct the→ paint for→ acceptance.

steel grid structure real scene

Realistic view of steel grid structure at gas station

Fuel Dispenser

Introduction to Fuel Dispensers

The fuel dispenser is the core equipment for oil metering and filling at gas stations. Its main functions include: receiving oil delivered by buried oil tanks, achieving stable transmission and accurate metering through built-in oil pumps, filters and flow meters; having control functions such as unit price setting, amount/liter conversion, quantitative refueling, automatic start-stop; supporting oil and gas recovery system to reduce oil and gas volatilization and meet environmental protection requirements;At the same time, it integrates safety and management functions such as explosion-proof, anti-static, emergency shutdown, leak monitoring, and data upload to realize safe, efficient, and accurate refueling of gasoline and diesel for vehicles, which is the key equipment to ensure standardized and intelligent refueling operations.

• The payment board is the core module for implementing the self-service payment function, integrating the card reader, password keyboard and communication interface. Support IC card, mobile payment and other payment methods to complete the encrypted transmission and settlement of transaction data.
• The main function of the filter is to filter impurities, moisture and particles in the fuel to prevent them from damaging precision components such as meters and oil pumps. At the same time, it can also ensure fuel cleanliness, avoid blocking the fuel nozzle, and extend the service life of the fuel dispenser.
• Solenoid valve It is the "electronic valve" of the oil dispenser, controlled by the motherboard, responsible for quickly opening or cutting off the oil circuit. It is an important safety protection component that will be shut down immediately at the end of fueling, emergency shutdown or abnormality to prevent fuel from continuing to flow out.
• Static discharge device This is the safety device of the self-service fuel dispenser. The user needs to touch it to release static electricity before refueling. The oil and gas explosion caused by electrostatic sparks can be avoided to ensure the safety of the refueling process.
• The self-priming pump is the power core of the fuel dispenser. It is responsible for sucking up fuel from the underground tank and pressurizing the fuel so that it can be smoothly transported to the fuel nozzle through the pipeline of the fuel dispenser. The self-priming function can maintain a stable oil supply even when there is a small amount of air in the pipeline.
• Flow measurement converter (meter) This is the "metering heart" of the fuel dispenser, which is used to accurately measure the volume of fuel flowing through and convert the flow signal into an electrical signal to the motherboard. Its measurement accuracy directly determines whether the refueling amount of the tanker is accurate.
• Oil gas break valve This is a safety protection device that is installed at the connection between the hose and the fuel dispenser or fuel nozzle. When the vehicle accidentally starts the pull hose, it will automatically disconnect and seal both ends to prevent fuel leakage and oil and gas escape, and avoid causing fire or environmental pollution.
• As the "information window" of the fuel dispenser, the display panel is responsible for displaying key data such as fuel volume, unit price, and total amount to users and operators. Some also show the operating status or fault indication of the dispenser.

Function of the main components of the gas station fuel dispenser

Display screen Payment Mainboard Fuel nozzle nozzle Flow measurement transducer

Main Parts of Fuel Dispenser

Filter filter meter control board Measurement controlling board Keyboard Oil and gas recovery Pull-off valve hydrocarbon vapor recovery breakaway Self priming pump

Schematic diagram of the location of the main components of the fuel dispenser at the gas station

Solenoid valve anti-static device anti-static device The shape and layout of the fuel nozzle of the oil dispenser are divided according to the number of gun bodies, with two mainstream mounting forms, side hanging and positive hanging, to adapt to different gas station space and fuel efficiency requirements. The overall shape is an explosion-proof sealed gun body, and there are differences only in the number of oil outlets and mounting arrangement, as follows: Positive hanging:The fuel nozzle is mounted vertically to the front of the fuel dispenser, the gun body is arranged in a word/matrix type, the vision is regular, easy to take and release, and it is suitable for four or more multi-gun models, which is the preferred form of mainstream gas stations.

Side mounting: The fuel nozzle is mounted on both sides of the tanker fuselage, 1-2 guns on one side, saving front space, the fuselage is slimmer, and it is suitable for single/double gun miniature models, or the fueling position in the narrow corner of the gas station.

Schematic diagram of fuel dispenser nozzle location

The core layout of the oil dispenser gun is divided according to the number of gun bodies, with two mainstream mounting forms, side hanging and front hanging, adapted to different gas station space and fueling efficiency requirements. The overall shape is an explosion-proof sealed gun body, which differs only in the number of oil outlets and mounting arrangement. The details are as follows: Single gun/double gun: The most basic, single gun is a single-machine single oil outlet, double gun is a single-machine double oil outlet (the same/different oil products can be added), the gun body is small, the mounting is compact, suitable for small gas stations, community stations or emergency fueling positions, side hanging/front hanging are all applicable.

Four guns/six guns: medium-efficient, single-machine integrated 4/6 oil outlets, mostly double-row symmetrical layout, the gun body is arranged in a matrix, taking into account multiple models and multiple oil products at the same time, adapted to mainstream gas stations and national highway stations in urban areas, mainly hanging, the layout is more orderly.

Eight guns: high-efficiency heavy-duty models, 8 oil outlets per unit, four-row symmetrical or double-row dense layout, large number of gun bodies, high filling efficiency, suitable for high-speed service areas, large logistics stations and other scenarios with large traffic, only suitable for hanging, need to reserve enough mounting space.

Schematic diagram of the number of fuel dispenser nozzles

Gas Station Storage Tank

Gas Station Fuel Storage

The core of the commonly used double-layer tank for gas station oil storage is the integrated structure of "inner tank oil storage + outer tank seepage prevention + sandwich monitoring". Compared with traditional single-layer tanks, it has significant advantages in safety, environmental protection, compliance and life. The following are from the structure, type, advantages, standard

Application and Installation Instructions:

I. Core structure: three-layer protection system

Inner tank: direct contact with oil, bear the function of oil storage and pressure bearing. Most of the materials are carbon steel (high strength, oil corrosion resistance), the design internal pressure is not less than 0.08 MPa, and the thickness of the steel plate is graded according to the diameter (such as 1.6-2.5m tank, tank body ≥ 6mm, head ≥ 7mm).

Outer tank: As a secondary impervious barrier, it is made of glass fiber reinforced plastic (FRP) or double-layer steel, resistant to soil, groundwater and chemical corrosion, with a thickness of not less than 4mm, to isolate the leakage of the inner tank from the environment.

Through the gap: 360° annular space between the inner and outer layers, the volume is 0.2% –2% of the tank capacity, built-in leakage detection riser and sensor, to achieve 24-hour online monitoring, trigger acousto-optic alarm when leakage, to avoid pollution diffusion.

Second, the mainstream type (according to the material) SF type (internal steel and external glass fiber reinforced plastic): the mainstream of domestic gas stations, the strength of the inner steel is guaranteed, the outer glass fiber reinforced plastic is anticorrosive, taking into account the cost and performance, suitable for the buried environment.

FF type (all glass fiber reinforced plastic): The inner and outer layers are all FRP, which is extremely corrosion-proof, lightweight, non-electrochemical corrosion, and has a longer service life. It is suitable for high corrosion soil or environmentally demanding scenarios.

SS type (double-layer steel): The inner and outer layers are both steel, with extremely high strength, and are mostly used in special working conditions (such as skid-mounted stations), but corrosion protection requires additional treatment, and the cost is high.

Compliance is just required, in line with the national standard: GB50156-2021 "Technical standards for automotive refueling and hydrogenation stations" explicit requirements, buried tanks are preferred to double-layer tanks, which is a mandatory compliance item for new/renovated gas stations.

3. Core advantages

Double impermeability, zero pollution risk: When the inner tank leaks, the outer tank intercepts the oil, the interlayer monitoring immediately alarms, avoids soil/groundwater pollution from the source, and solves the pain points of single-layer tank corrosion and leakage.

Real-time monitoring, active early warning: Vacuum/pressure/liquid level sensor in the gap, 24-hour monitoring, immediate alarm when leakage, easy and fast disposal, reduce accident losses.

Anti-corrosion and durable, double service life: The outer layer of FRP is resistant to soil, groundwater and microbial corrosion, and has no electrochemical corrosion. The service life can reach more than 30 years, which is much longer than that of single-layer steel tanks (10–15 years), reducing replacement costs. Economic long-term effect, reducing the total cost: Although the initial investment is slightly higher, it avoids high repair fees after leakage (single site repair often exceeds 1 million), fines and brand losses, and the long-term comprehensive cost is lower.

At present, the mainstream tank used in gas stations is SF type (internal steel and external glass fiber reinforced plastic), as shown in the following figure:

Fuel storage and transportation process at the gas station

The gas station oil storage and transportation process revolves around the "safe, efficient and impervious" core, and is closely connected and standardized. It is mainly divided into two parts: the storage process and the transportation process. The whole process follows the relevant safety and environmental protection specifications, as follows:

I. Oil Storage Process

• Oil unloading and warehousing: The refined oil is transported to the gas station through the tank truck, connected to the oil inlet of the buried double-layer tank through the oil unloading crane pipe and the oil unloading pipeline, the oil inlet valve is opened, and the oil is injected into the inner layer of the double-layer tank (the core oil storage unit). At the same time, the oil volume in the tank is monitored in real time through the level gauge to avoid overflow (controlled within 90% of the tank capacity).
• Static storage: After the oil injection is completed, close the oil inlet valve and let it stand for a period of time (remove impurities and stabilize oil quality). During this period, the outer layer of the double-layer tank plays a secondary anti-seepage role. The interlayer monitoring system (sensor, alarm controller) is on duty for 24 hours to monitor whether there is leakage in real time. The breathing valve automatically balances the pressure in the tank to prevent deformation of the tank.
• Daily control: During storage, staff regularly check the oil level, oil quality and tank leakage through the level gauge and monitoring riser to ensure that the anti-corrosion and anti-seepage properties of the double-layer tank are intact, and prevent the hidden dangers of oil volatilization and leakage.

II. Oil conveyance process

• Fuel delivery (core process): When refueling the vehicle, start the oil pump of the fuel dispenser, open the oil outlet valve of the double-layer tank, the oil in the tank is sucked to the fuel dispenser through the oil outlet pipeline, and after recovering the volatile oil and gas through the flowmeter metering and oil and gas recovery device, it is refilled to the fuel tank of the vehicle through the refueling gun, so as to achieve sealed transportation and reduce oil and gas leakage throughout.
• Auxiliary transportation (emergency/resupply): When it is necessary to transfer oil between different tank bodies, open the corresponding tank inlet and outlet valves, and cooperate with the oil pump through the oil pipeline to realize the transportation of oil across the tank; if the oil in the tank is insufficient, repeat the unloading and warehousing process to complete the oil supply.
• End of process: After refueling, close the oil pump and oil outlet valve, update the remaining oil volume in the tank with the liquid level meter in real time, and check the pipeline and valve sealing to ensure no dripping; regularly carry out maintenance on the conveying pipeline, oil pump, and fuel dispenser to ensure the smooth operation of the conveying system.

SF DOUBLE-WALL TANK

SF double jar physical display

Tank Key Component Information Sheet

Position Function Characteristics The special channel for the top of the manhole tank to enter the tank for operation. It is used for cleaning, maintenance, anti-corrosion construction, component replacement and troubleshooting inside the tank. It is equipped with a high-strength sealing cover and seals. After installation, it can ensure that the tank is sealed to prevent media leakage and external impurities from entering the ventilation position on the top of the respiratory valve. It automatically opens and closes according to the pressure inside the tank. When the pressure inside the tank exceeds the limit, it automatically discharges and releases air pressure. When negative pressure is formed, it automatically sucks in air to make up pressure to avoid overpressure fracture or negative pressure suction of the tank. At the same time, it reduces the medium volatilization loss and prevents external impurities and rainwater from entering the tank -Leak detector is used to monitor the leakage of tanks, welds and interlayers in real time Accurately capture trace leakage signals, realize 24-hour uninterrupted online monitoring, detect leakage Immediately sound and light alarms, timely avoid media leakage, environmental pollution and safety risks Compact structure, easy installation, suitable for all kinds of oil storage tanks, especially to meet the safety monitoring needs of laboratory small metering tanks, industrial double-layer tanks Reinforced parts of the top or side walls of the hoisting hole tank are used to wear slings and slings, and the periphery of the hoist, transfer and installation holes of the tank will be reinforced to ensureThe lifting force is uniform and does not damage the tank structure. After the installation is completed, it will be sealed and sealed, and the tight filter of the tank will be restored.

Tank oil inlet,

Pollutants such as impurities, particles, rust and other contaminants in the medium during the filtration, storage and filling process of the oil outlet pipeline or oil outlet to prevent impurities from blocking subsequent pipelines, valves, fuel dispensers and other equipment to avoid impurities from entering the liquid equipment such as the engine. At the same time, ensure that the cleanliness of the storage medium The liquid level probe is installed in the tank to accurately measure the liquid level height of the medium in the tank. The volume and quality of the storage liquid can be obtained through data conversion. Some models can also monitor the medium temperature. The data can be transmitted to the ground console to achieve real-time display of the liquid level, high and low liquid level alarms, inventory management, and prevent overflow of the tank.Risk, while facilitating inventory statistics and management of oil and chemical media

Smart monitoring equipment

Liquid Level Gauge Breathing Valve Oil Drainage Anti Spill Valve

Gas Station Storage Tank Accessories

COMPONENT DISPLAY OF OIL TANK

Display of supporting parts of the oil tank

Leak Detector Dosing Hole Ball Valve Dosing Hole Foot Dosing Hole

DISPLAY OF SUPPORTING COMPONENTS FOR OIL

STORAGE TANKS

The oil measurement holes are mainly installed vertically on the top of the tank, and one is set on the top of each tank to measure the height and sampling of the materials in the tank, which has good sealing properties and is leak-proof. There are hole caps and tightening bolts, and oil-resistant rubber pads are embedded in the hole cap sealing groove to prevent sparks from collision between the hole cap and the iron when it is closed. There is a throwing ruler groove inside to prevent sparks from sliding down and friction during the oil measurement process to ensure safety.

The rotary oil hole fire-retardant breathing valve is a special accessory for the safety protection of storage tanks. It integrates the three functions of respiration and pressure relief, negative pressure suction, and fire retardant and explosion-proof. It is installed on the top of the oil tank and chemical tank.

It can automatically open and close according to the pressure in the tank: when the positive pressure exceeds the limit, the exhaled gas will relieve the pressure, and the inhaled air will keep the pressure during the negative pressure, so as to avoid the tank body from sucking up or drum cracking; the internal self-contained flame retardant core can block the external flame and spark from entering the tank, prevent the flammable and explosive medium from bursting, and has the functions of pressure balance and fire safety. It is a standard safety device for petrochemical and oil depot storage tanks.

The oil unloading anti-overflow valve is installed inside the oil unloading port of the oil tank, and automatically monitors the liquid level height during oil unloading. When the oil level reaches the upper limit, the oil inlet channel is automatically closed to prevent oil overflow and leakage. The structure is compact and responsive. It is a standard safety valve for gas stations, skid-mounted refueling devices, and oil storage tanks.

The double-door bottom valve, also known as the check valve, is one of the accessories used to prevent oil backflow in the suction pipeline when the fuel dispenser stops (flow range: 0-60L/min, closing valve speed: 0.5s, medium used: gasoline, diesel, kerosene, etc.). The double-door bottom valve is sealed with a double-layer structure, and the sealing performance is good; it is installed in the tank, and the suction pump of the fuel dispenser is opened, and the fuel dispenser is oiled. It automatically closes after the fuel dispenser stops working; it can prevent the backflow of oil in the pipeline to the tank to generate air to play the role of a check valve to ensure the normal operation of the fuel dispenser.The double door bottom valve uses two sets of the same valve body and disc to make its check performance more reliable. Safe.

The flame retardant breathable cap is mainly used on the fuel tank of the gas station, and is installed on the top of the outdoor breathable pipe through the breathable pipe. The top of the breathable cap is made of stainless steel, aluminum alloy shell, built-in aluminum alloy or stainless steel fire-resistant corrugated plate, which can automatically adjust to prevent the pressure overpressure in the tank, just like breathing; and can prevent the passage of unsafe factors such as open flames or Mars that are accidentally generated outside, ensuring the safety of the fuel storage tank at the gas station.

Display OF supporting components for oil storage tanks The main material of the flame arrester shell is cast aluminum alloy, and the flame retardant core is aluminum alloy corrugated plate, which meets the requirements of national technical standards. The function of the pipe flame arrester is to prevent external flames from entering the equipment and pipelines where flammable and explosive gases are stored, or to prevent flames from spreading between equipment pipelines.Flame arresters for petroleum storage tanks are reasonable in structure, light in weight, and qualified in explosion-proof performance. They are suitable for Class A oils with a flash point of less than 28 C, hydroxide liquefaction, kerosene, diesel oil, toluene, crude oil with a flash point of less than 60 C, etc. They can be used in conjunction with breathing valves, and can be used alone. The internal floating roof tank vent pipe and the gas station underground tank vent pipe are suitable. In order to ensure that the performance of the flame arrester achieves the purpose of safe use, the flame arrester shall be inspected and maintained. The flame arrester is inspected once every six months to check whether the flame retardant core is blocked, deformed, corroded, etc.;The blocked flame retardant core should be cleaned in time to ensure the smoothness of each hole on the core; the flame retardant core should be replaced in time for deformation and corrosion. When re-installing the flame retardant core, the joint surface should be tight and not leak.

CONSTRUCTION PROCESS OF BURIED OIL TANK

Construction process for buried tanks

• Place the ground anchor — Before placing the ground anchor, measure and mark the position of the ground anchor according to the requirements to ensure that the distance between the ground anchors meets the requirements. In the process of lifting the ground anchor, it must be placed on both sides of the foundation bed in strict accordance with the marked position, and ensure that the ground anchor is placed horizontally.
• Placement of tanks, measurement deviations — Use lifting equipment to place tanks on the base bed. When placing the oil tank, ensure that the oil tank is located in the center position between the ground anchors, and ensure that the oil tank level can be measured and confirmed by means of a level ruler, a level gauge, etc. After each tank is effectively fixed, the -th deviation measurement shall be carried out, that is, the distance from the end face of the manhole flange to the tank bottom protection plate shall be measured and recorded.
• Installation belt — After the oil tank is placed, install the belt on the reinforcement rib of the oil tank marked with the arrow. First, the hook at the end of the belt is connected to the hook on the ground anchor, and the belt is bypassed from the top of the oil tank. Then the hook at the other end of the belt is connected to the ground anchor through the flower basket bolt.
• Second Deviation Measurement — The second deviation measurement is performed after the strap installation is complete. If the measurement deviation is found to be greater than 5mm compared with the -th deviation data, the tightness of the belt should be adjusted to correct the deviation.
• The first backfill — after the deviation measurement is completed, the backfill can be performed. First carefully and evenly fill the 300mm backfill material at the bottom and around the tank. During the backfilling process, the wooden filling rod is used to fill in between the reinforcing ribs at the bottom of the tank and under the bottom circular tank to ensure that the backfilling material fills all the gaps. After the bottom of the tank is filled, the tamping equipment is used for tamping. When tamping is complete, re-check the level and spacing of the tank.

CONSTRUCTION PROCESS OF BURIED OIL TANKS

• Tank arrival acceptance — After the tank arrives, the tank owner needs to check the outer surface of the entire tank, mainly observe whether there is damage, cracks, and scratches, and check the factory water height record.
• Tank handling and storage — When the tank is unloaded and moved, it should be lifted by using a sling with double lifting lugs. The oil tank should be placed at the level of the pre-laid grass mat, on a smooth ground, and wooden wedges, sandbags or tires should be placed on both sides to prevent the oil tank from rolling.
• Tank excavation — During the excavation process, pay attention to the safety protection of the slopes and surroundings of the tank area. It is recommended that the excavation slope of the tank pool is 60°, and the excavation depth of the tank pool is determined by the local soil and the buried location. However, it must be ensured that the landfill depth of the tank top backfill material is not less than 600mm under the duct and not less than 1000mm under the duct.
• Laying multicolored cloth — After the tank excavation is completed, lay multicolored cloth in the tank to avoid the surrounding soil blocks slipping into the tank during backfilling.
• Laying the foundation bed — After the tank is cleaned, lay the backfill material with a thickness of 400mm at the corresponding position of the tank installation at the bottom of the tank as the foundation bed. The backfill material should be ordinary gravel with a diameter of 3-12mm. The bed to be laid shall be tamped with tamping equipment to ensure smoothness.
• After the stratified backfill-check-cut is normal, the backfill is stratified and each layer of backfill material is compacted until backfilled to the top of the tank.
• Third Deviation Measurement — After backfilling to the top of the tank, a third deviation measurement is required. Compare the values in accordance with the requirements in the Installation Instructions for 3DFF Double Layer Tanks to confirm whether they meet the requirements.
• Check the detection liquid — After backfilling to the top of the tank, check the change of the liquid level in the detection liquid tank, and check whether there is a leak detection liquid in the oil tank, so as to confirm that the oil tank is not damaged during installation. If you find that there is a leak detection liquid in the oil tank, please contact Auke Sino-Italian.
• Water Injection Ballast Settlement — Water Injection Settlement is required during tank backfilling. The operation process and requirements of settlement shall be implemented in accordance with the current national norms and standards. Before water injection, record the elevation data of the oil tank. In the process of water injection and settlement, continuously observe the elevation of the oil tank to ensure that the data meets the standard requirements. If abnormal settlement occurs, it is necessary to formulate a treatment plan by the design and other units according to the actual situation.
• Installation of leak detection riser — After backfilling to the top of the tank, Ausco Sino-Italian Service Engineers will install a leak detection riser on the leak detection liquid tank of each oil tank.
• Backfill to design height — After the leak detection riser is installed, continue backfilling to the design height.
• Empty the tank and measure the liquid level of the test solution — after backfilling to the subgrade, clear the tank. Remove ballast from tank. In addition, the liquid level of the leakage detection liquid in the middle layer of the oil tank is continuously measured and recorded for comparison. If you find that the details are abnormally rising or falling, please contact Auke Sino-Italian.
• Fourth deviation measurement — If the fourth deviation measurement meets the requirements, the concrete pavement shall be laid, and the concrete subgrade around the top of the manhole shall be laid into a slope to facilitate rainwater drainage.

QUALITY INSPECTION REPORT OF OIL TANKS

Tank Quality Inspection Report

BRIEF INTRODUCTION TO EXPLOSION-PROOF BARRIER MATERIALS

Brief introduction of explosion-proof barrier materials

Explosion-proof barrier material:

It is a safety protection material specially developed for flammable and explosive medium storage and transportation equipment. It is widely used in oil tanks, chemical storage tanks, oil pipelines and other core equipment, and is a key supporting product to ensure safe production in the petrochemical industry. It is based on high-strength, corrosion-resistant, and high-temperature-resistant special materials. Through scientific structural design, it achieves multiple protective functions of explosion-proof, explosion suppression, and fire retardation, and avoids the safety hazards caused by static electricity, open flames, impact and other factors from the source.

Core working principle: When flammable and explosive vapors and air in the storage tank form explosive mixed gases, the honeycomb or network structure inside the material can quickly block the flame propagation, inhibit the generation and diffusion of explosive shock waves, absorb heat, reduce the temperature of the medium, prevent the spread of fire, and ensure the safety of equipment and surrounding personnel. Compared with traditional means of protection, it has the advantages of small size, light weight, convenient installation, and long service life. It can achieve efficient protection and greatly reduce safety operation and maintenance costs without significantly modifying existing equipment.

Product Advantages

Safety and explosion-proof: The oil storage tank transformed by the barrier explosion-proof technology has achieved intrinsic safety. In the event of an accident (open fire, static electricity, welding, gunshot, lightning strike, collision and wrong operation, etc.), there will be no explosion. Even if a fire occurs, it will block the combustion of the flame, slow down the flame propagation speed, significantly reduce the flame height, and help to extinguish the fire.

Environmental protection and energy conservation: It has the effect of inhibiting oil and gas volatilization. The Beijing Research Institute of Environmental Sciences tested the oil and gas volatilization data of the gas station in the unloading and large breathing state. The test showed that: under the same state, the oil and gas volatilization concentration of the storage tank device that implemented the barrier explosion-proof technology transformation in the unloading and large breathing state was reduced by 43% compared with the oil and gas volatilization concentration of the unmodified storage tank in the unloading and large breathing state, which brought considerable benefits to the enterprise and society and effectively reduced environmental pollution.

Protecting water resources: Blocking explosion-proof products can play a cathodic protection role on the tank wall, delaying the corrosion of the tank wall, preventing corrosion and leakage, so as to achieve the purpose of protecting groundwater resources. At the same time, it can also extend the service life of the tank, especially for buried storage tanks in gas stations that are not cleaned and maintained for a long time and are in critical and sensitive positions.

Low operating cost and safe and reliable: The safety and explosion-proof function of the barrier explosion-proof buried storage tank is not affected by changes in internal and external conditions (such as power outage, water outage, gas outage, monitoring and automatic control device failure, etc.). No additional auxiliary equipment is required, which can eliminate the risk of explosion and fire accidents in the buried storage tank under any circumstances. Stop the surge:Significantly reduces the inrush phenomenon of the medium in the container, reduces the liquid shaking energy in the container by 40 times, reduces the wear of automobile tires, and greatly reduces the probability of accidents caused by the inrush of hazardous chemical mobile transport devices.

Anti-static accumulation: During the loading and unloading of oil, static electricity at the wall of the metal container can be connected to prevent electrostatic accumulation. Fire extinguishing is simple: if the oil hole catches fire, the flame height should not exceed 30 cm. Simply cover the oil hole with a fire blanket, and the flame can be extinguished.

Fast and efficient: If you need to implement the barrier explosion-proof technology transformation on the buried oil storage tanks of existing gas stations, it only takes 1-3 days.

ADVANTAGES OF EXPLOSION-PROOF BARRIER MATERIALS

Advantages of explosion-proof barrier materials

Explosion-proof Barrier Material

EXPLOSION-PROOF BARRIER MATERIALS

Explosion-proof barrier material

QUALITY INSPECTION REPORT EXPLOSION-PROOF BARRIER MATERIALS

Explosion-proof barrier material quality inspection report

Gas station pipeline

Gas Station Fuel Delivery

The gas station composite pipeline mainly adopts a double-layer composite structure, which is designed for gasoline, diesel oil transportation and oil and gas recovery systems, replacing traditional metal pipelines. With the characteristics of no rust, no leakage, oil corrosion resistance, anti-static, long service life, etc., the use of hot melt or fusion connection, good sealing, convenient construction, can effectively prevent oil seepage pollution of soil and groundwater, while meeting the standard requirements of explosion-proof, anti-static, safe transportation of gas stations, is the current mainstream selection of new and renovated gas station buried oil transportation, oil and gas recovery pipelines.

Gas Station Pipeline Buried Layout

Small skid-mounted gas station

PRODUCT DISPLAY OF SMALL SIZE SKID-MOUNTED FUELING EQUIPMENT

Small skid-mounted refueling equipment product display

QUALITY INSPECTION REPORT SKID-MOUNTED FUELING EQUIPMENT

Skid-mounted refueling equipment quality inspection report

PRODUCT DISPLAY OF GAS STATION

Gas Station Rendering Display

Gas Station Cases

Somewhere in Cambodia

Win-win cooperation

UNDER CONSTRUCTION

Under Construction

Selected Company Cases

Some Company Cases

Splendid Achievements > > Project Name

Xiushan County Gazebo Gas Station

CONSTRUCTION PROJECT

Engineering Cost

• 170,000 yuan. CCCC First Gongju Group Co., Ltd. An Gong Expressway AGZCB-4 Project Management Department Cost: 6.11 million yuan Xiushui County Shi 'u Township plus

Specialized in gas station project equipment

Industry Subcontracting Engineering Project Cost:

• 820,000 yuan Qian Kang Energy Plus

Gas Station Canopy

Shed and decoration processing and installation cost: 868,000 yuan) Project name Zhongtian Hechuang Energy Co., Ltd. Hulusu Coal Mine, Menkeqing Coal Mine barrier explosion-proof skid-mounted refueling device Project cost: 1.09 million yuan) Chemical project processing and installation

Construction Contract

Project cost: 1.154 million yuan development trend

COMPANY DEVELOPMENT DIRECTION

Company trends Patent technology Patent technology Enterprise Qualification

• Steel Structure Engineering Professional Contractor Level 1
• Building decoration and decoration engineering professional contracting level 1
• Petrochemical Engineering Construction General Contracting Grade II
• Municipal Public Works Construction General Contracting Grade II
• Electromechanical Engineering Construction General Contracting Grade II
• Environmental engineering professional contracting level II
• Industrial Piping Installation GC1
• Firefighting Facility Engineering Professional Contractor Grade I
• Waterproof, anti-corrosion and thermal insulation engineering professional contracting level 1
• Grade II General Contracting for Construction Works
• Electrical Engineering Construction General Contracting Grade II
• Grade II Subcontracting for Foundation Engineering
• Construction Electromechanical Installation Engineering Professional Contractor Grade II Public Pipeline Installation GB1. GB2
• Class D pressure vessel manufacturing (including installation, renovation, repair) Class AAA credit system certification With the gradual standardization of the construction market and the rapid development of the domestic economy, the qualification of China's construction enterprises is the access permit for construction enterprises to enter the construction market. The operation of enterprises is legal only under the premise of obtaining qualifications.The qualification of construction enterprises is equivalent to knocking down bricks. However, many construction subjects generally do not have the qualification to do projects. Therefore, in the current heavy industry, industrial and construction engineering industries, joining engineering companies, the qualification joining cooperation mode has gradually increased, which has become a high-quality choice for many engineers.Cooperating with a strong qualified company can not only obtain the priority rights of qualification sharing, but also the exclusive advantages of resource sharing. It also solves the problem that the qualification undertaking project of the company has no qualification or does not meet the qualification standards, and saves the labor and operating costs of the company. It is easy to undertake, the cooperation process is perfect, and the relevant procedures are complete.AAA Credit System Certification Quality Management System Certification

SERVICE PROCESS

Strong technical strength/Exquisite technical process/Perfect production system/Perfect supporting service system

Service Process

Provide the required model standard Confirm the project site team On-site measurement Formal contract guarantee Design payment for the project Deposit payment for the project Final payment Free maintenance Pre-sales consultation: Our professional team will provide you with a detailed product introduction and solution suggestions to ensure that you choose the most suitable service product.

Installation and commissioning: We provide equipment installation, commissioning and training services to ensure that the product can be put into use smoothly.

After-sales service: We provide a full range of after-sales service support, including equipment maintenance, repair and replacement, to ensure that the entire transportation of products without worry.

Technical support: We have a professional technical support team to provide you with technical advice, system upgrades and product development and other services.

Welcome to consult us We are a professional R&D and production of high-quality heavy industry enterprises, with advanced production equipment and technology, as well as experienced technical personnel. We are committed to providing our customers with the highest quality of service to meet their needs and expectations.

Our company's industrial products cover a number of fields, including petroleum processing, refineries, coal mines, gas station construction, skid-mounted equipment, and barrier explosion-proof materials. The above are our company's metal container products, which can be widely used in the above fields, not only with high quality and high performance, but also with innovation and fashion. Our production team constantly innovates to provide customers with the latest products and designs.

Famous companies are welcome to visit the guide to learn about our production processes and finished industrial products and point out valuable suggestions. We are available 24 hours a day, please feel free to contact us if you need us, we will do our best to

At Your Service!

Hunan Xianggong Construction Co., Ltd. Contact: Wang Yazhen Tel: 17373573777 Email: hnxgjs@163.com Website: http://www. hnxgjs.com Address: Xiangnan High-tech Park, Chenzhou Economic Development Zone, Hunan Province