Large Vertical Storage Tank 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, the construction of vertical storage tanks and vertical warehouses, oil depots, gas station construction, equipment installation, and steel grid structure. He has 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 Huizipu, with the mission of deepening the petrochemical industry and promoting the upgrading of the new/alternative energy industry. Relying on the comprehensive technical experience advantages of storage tanks, skid-mounted filling devices, and filling stations, the company is a comprehensive service provider integrating design and construction, assisting the petrochemical industry in all dimensions, creating a new comprehensive energy service model, and building an energy terminal ecological chain.

SF double-layer tank skid-mounted refueling device

steel structure

Grid Structure

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

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.

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.

CHARACTERISTICS OF VERTICAL STORAGE

VERTICAL STORAGE PRODUCTS

Vertical tank characteristics

The steel storage tank project is an indispensable and important infrastructure for petroleum, chemical, grain and oil, fire protection, transportation, metallurgy, defense and other industries. Our economic life is always inseparable from large and small steel storage tanks. The important role of steel storage tanks in the economic development of the country is irreplaceable. Steel storage tanks are special equipment for storing various liquid (or gas) raw materials and finished products. For many enterprises, normal production cannot be achieved without storage tanks. In particular, the national strategic material reserve cannot be separated from various capacities and types of storage tanks. Most of China's oil storage facilities are based on above-ground storage tanks, and most of them are metal structures.

With the rapid development of petrochemical, the production equipment is highly integrated and large-scale, the volume of the storage tank is increasing, the total capacity is increasing, and the threat of fires in the petrochemical area to safety production is increasing. The number of large floating roof storage tanks of 100,000 verticals and above nationwide exceeds 6,000 units, and the largest storage tank is 150,000 verticals (diameter 100m). Regional storage tanks have been centrally arranged with a maximum reserve of more than 10 million units, the largest in the world.

High space utilization: The vertical structure of "upward development" is adopted, the floor area is much smaller than the horizontal storage tank of the same volume, and the single equipment covers only 1/3 ~ 1/2 of the horizontal tank of the same volume, which is convenient for forming an array layout in the compact industrial park and tank area. The pipelines can be centrally arranged along the pipe gallery, greatly improving the efficiency of site utilization and overall planning.

Strong storage stability: The tank body is evenly stressed, the tank wall can effectively resist the internal liquid static pressure and external wind load through the reinforcement ring design, combined with the standard strength check, the structural stability is outstanding; the vertical structure makes the liquid level stable without lateral shaking interference, which is convenient for accurate readings of liquid level gauges such as radar and ultrasonic waves, improves the automation control accuracy, reduces the risk of overflow and false alarms, and at the same time, the liquid can be naturally settled by gravity, which facilitates bottom discharging and adapts to the production scenario of frequent sampling.

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VERTICAL SILO

Vertical silos mostly appear in geometric structures, mainly conical, conical and cylindrical, etc. Usually a cylindrical combined silo with a conical bottom is used, which is conducive to the overall flow of materials. The material is the most economical, and the wall of the silo is evenly stressed. Under the conditions of sufficient strength and stiffness, the effective volume can be fully utilized. Under the action of self-weight, it can be reliably discharged in the overall flow mode through the discharge port of the silo to improve the requirements of mechanized system production.

THE ADVANTAGES OF VERTICAL SILOS

Advantages of vertical silos

• The space utilization rate is high, and the occupancy of small reserves is large. The vertical compact structure design is adopted to achieve greater effective volume under the same footprint, which greatly saves the space of the site. It is especially suitable for the compact layout of the factory area and the tight working conditions of the land, taking into account both economy and practicality.
• The structure is stable, safe and durable. The whole is made of high-strength steel. The mechanical structure is reasonable. It has strong resistance to wind load, settlement, and deformation. The operation is stable and reliable. It can meet long-term continuous use in the outdoors. The service life is long and the safety factor is high.
• Smooth discharging, no material accumulation, low residual internal flow channel design science, with reasonable taper and discharge structure, smooth material flow, not easy to bridge blockage, clean and thorough discharging, reduce material waste, improve production continuity and use efficiency.
• Excellent sealing performance, good overall sealing quality of protective materials, can effectively prevent dust, moisture, rain, pollution, suitable for powder, granular materials, chemical raw materials and other materials storage, to ensure material cleanliness and stable performance.
• With a high degree of customization and strong adaptability, we can customize the capacity, size, material (carbon steel/stainless steel, etc.), inlet and outlet methods, insulation, anti-corrosion, explosion-proof and other configurations according to customer needs, and flexibly adapt to petroleum, chemical, grain and oil, building materials, environmental protection, coal mining and other multi-industry scenarios.
• Quick installation, easy operation and maintenance, modular manufacturing, convenient on-site assembly, and short construction cycle; the overall structure is simple, the daily inspection, cleaning, and maintenance workload is small, reducing later operation and maintenance costs, and enhancing the comprehensive use value of equipment.
• Environmental compliance, in line with industrial standards Designed and manufactured in strict compliance with industry specifications and safety standards, it can be equipped with dust removal, explosion-proof, anti-static and other devices to meet the environmental protection, safety and standardized management requirements of modern factories.

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 Plant Astronomy Power Energy High Speed Rail Hangar Observation Tower Hou Hou Hall Theater Playground Steel Beam product cases OF SKID-MOUNTED fueling equipment

Vertical Bin Case Demonstration

The diameter selection of the vertical silo should take into account that since the increase in material pressure in the silo is not proportional to the increase in depth, the increase in depth increases little. Therefore, it is economical to choose a larger aspect ratio. Usually the height of the straight part of the silo is 2 ~ 3 times its diameter. Its straight part is the main storage part, and its size depends on the storage quota.

VERTICAL SILO CASES

Vertical Bin Case

VERTICAL STORAGE CASES

Vertical tank case

Anaerobic tank

ANAEROBIC TANKVERTICAL SILO CASES

ANAEROBIC TANKVERTICAL STORAGE CASES

Grain and oil storage tanks

GRAIN AND OIL STORAGE TANK

Grain and oil storage tank vertical storage cases sewage treatment tank

WASTEWATER TREATMENT TANK

Chemical storage tanks

CHEMICAL STORAGE TANKVERTICAL STORAGE CASES

CHEMICAL STORAGE TANK

Petroleum storage tanks

OIL STORAGE TANK

PRODUCT DISPLAY OF SKID-MOUNTED FUELING EQUIPMENT

Vertical tank production display

CONSTRUCTION PROCESS OF VERTICAL STORAGE

Vertical tank construction process

Large storage tanks, depending on the geographical location, are generally prefabricated on-site, and can be cut and processed by mechanical means (shearing machine). Semi-active cutting machines, CNC cutting machines, etc. can also be used for flame cutting processing.

Data prefabricated hanging plate, placement and transportation: Because the plate is relatively large, the degree of the wall plate of the 1 0 × 1 04 m 3 storage tank reaches 1 30000 m m, and the medium-sized plate is nearly 15000 mm. Therefore, the balance frame for horizontal hoisting and the balance beam for hoisting are placed throughout the construction process to prevent plastic deformation of the plate during the hoisting process. From the base plate and the wall plate to the device, it usually takes several months. During this period, plastic deformation may have formed when the device is improperly placed, so it is necessary to pad the plate flat when stacking. The interval between the planks is controlled at about 2m. Laminate 3 ~ 5 sheets are stacked, with wood squares between them, and the wood squares between layers are in the same direction. At the same time, because the compressive stress generated by its own weight is not completely released during the device, it is deformed, so it should not be accumulated too high.

Cutting: If a CNC cutter is selected, the cutting accuracy and groove quality will be more stable. If it is semi-active cutting, everyone and each cutter may be cut out differently, which adds certain difficulty to the assembly and welding. In principle, special people draw lines and special people cut. The rolled steel plate is stored in the tire. Try to choose a vertical tyre to prevent radian changes caused by self-weight.

Roundness: There is a certain difficulty in controlling deformation during the construction process, which can only be achieved through cooperation between work types and the responsibility of operators. If the manufacturing of the tire can be useful to prevent the poor cooperation between the crane and the roller plate from deforming the plate, but it brings many difficulties to the normal construction of the site: First, the tire is too large and may occupy a large orientation. The second is to affect the construction of "indenter".

Heat treatment: The wall panels that receive welding in the first circle of the large storage tank list need to be welded to reduce stress. The detachable heat treatment assembly furnace developed by Sijian Company can meet the requirements of field practice. To prevent the deformation of the opening part, the reinforcement methods and methods during welding and heat treatment should be appropriate. If the handling is not good, once the deformation occurs, it is difficult to correct.

The bottom of the tank is constructed in a 5 × 104m3, 10 × 104m3 floating roof storage tank. The bottom of the tank is generally a 14mm, 21mm domestic 16Mn R plate and a Japanese SPV490Q steel plate, all of which are butt joints. During welding, a single weld is easily deformed and the bottom of the tank is deformed as a whole. It is generally manipulated by anti-deformation. The marginal plate thickness of the tank bottom with cleaning holes should be thinned by 1 ~ 2mm to prevent misalignment. When welding the marginal plate, symmetrical welding must be uniformly distributed. It is not possible to weld one weld and then weld other welds, which will cause the marginal plate to be shortened unevenly. When drawing the tank wall assembly circle on the tank bottom, it must be completed by the same person as soon as possible to prevent thermal expansion and cold shrinkage of the tank bottom due to temperature changes. The ellipticality of the tank wall is affected due to the inaccuracy of the tank wall reference circle.

The middle width plate is 8mm and 12mm domestic Q235A plate, and the plate is arranged before construction. The construction of the lap weld is not difficult, and the butt weld with a backing plate is prone to welding deformation. It is necessary to lay the primary mat by disconnecting the opening and adding the secondary mat to ensure that each board is shortened freely during the welding process. Second, the bottom and cover surfaces are welded in sections, and the gap between the thin plates and the groove is slightly larger (about 8mm) to ensure the quality of the bottom welding. The active welding method of submerged arc welding of the cover surface with the addition of broken welding wire for welding can be useful in preventing deformation. Third, it is necessary to add a backbar. 4. Under conditional conditions (good weather and less rain during construction), CO2 gas maintenance welding can also be useful to prevent deformation.

Tank wall welding — Girth welding is ensured by the skilled experience of the welders. The flux of the ring seam can be changed to HJ431 (cheaper than SJ101), but it must be required that the particle size of the flux is small to ensure that there are no air holes. After clearing the roots with carbon arc gas gouging, it is necessary to grind off the oxide layer with a grinder, and carry out the necessary magnetic powder or coloring inspection on the plates of different strength grades.

Floating roof construction — In the case of a single disc, the cabin is prefabricated outside the rear device. The cabin bottom plate has a large slope and must be prefabricated as a tire. The external surface of the temporary bracket of the single disc should be flat, with ring beams and warp reinforcing beams. The temporary bracket is arranged in a circular shape to ensure that the circumference of each ring beam conforms to the circumference of the bracket, and the ring beam and warp beam are used as part of the bracket. It is generally simpler to place the temporary bracket in a square or diamond shape when the ringless beam is placed in the direction of the beam. After the single disc is laid, first check whether there are dents and protrusions on the upper surface to adjust, then weld from the lower part, and then weld the upper part. When welding the top, the back bar must be added to force the deformation. The double-floating disc structure generally does not carry out the prefabrication of the cabin, because there is a special connection steel between the cabin of the single-floating disc and the single disc, which is convenient for the device. The bottom surface of the double floating plate is flat, and the cabin and the floating plate have no special connection steel, and the connection between each other is slightly cumbersome.

Double discs first lay the bottom steel plate, and then install partitions, trusses, etc. Then lay the bottom weld and the top weld to lay the top plate. When installing the double disc, because the concentric circle of one ring determines the orientation of the annular partition, the radial direction between the adjacent annular partitions is a fixed interval. When drawing the concentric circle, the center orientation is taken as the reference to ensure that the center point and the tank wall are at the same orientation.

Tank wall assembly — The first wallboard is usually horizontal, and the height is generally adjusted by the padding square pins at the bottom. If the levelness of the whole circle is found, it is recommended to spot weld the baffle on each pin to prevent the vibration of the wall plate during construction from causing the pin to move. In addition, according to the relevant proposed "compensation" process (the straightness of the wall plate is changed due to the shortening of the welding of the large joint at the bottom of the tank), when each wall plate device is installed, it is tilted inward as much as possible (within the standard range) to prevent outward tilting as much as possible.

The assembly of the wallboard is not difficult. If the ring seam is cleared with a grinder, it is required to leave a 2mm gap when the ring seam is paired, which adds some difficulty to the assembly. The thickness of the wall plate is less than 14mm, which is prone to deformation. The main reason is that the vertical seams and circumferential seams affect the straightness (the standard requirement is large 50mm), but the main reason is that the prefabricated quality of the sheet itself is poor or deformed during the construction and transportation process.

Bottom welding — According to the experimental effect, the bottoming can be welded by process welding and CO2 gas maintenance welding. Craft welding takes some time to remove slag, and CO2 gas maintenance welding has stricter requirements for groove moisture, but slag removal is easy. The quality of the bottom welding must be good, in order to ensure the quality of the shredded submerged arc welding cover, otherwise the shortcomings will remain inside a hidden danger.

Large seam welding — The inner and outer cover of the craft welding is selected, and the submerged arc welding fills the cover. Because of the circumferential weld at the site, the flat welding machine needs other equipment. When welding the inner weld, add the side fixed wheels and top on the tank wall to ensure that the welder walks along the tank wall. When welding the outside, the flat welding machine can absorb its own components on the tank wall, so that the welding machine can walk along the tank wall, otherwise only 2 moving platforms can be added to each welding machine. The welder manually controls the direction of the welding machine.

Win-win cooperation

UNDER CONSTRUCTION

Under Construction

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 variety of fields, including vertical storage tanks, vertical silos, gas station construction, skid-mounted equipment, and barrier explosion-proof materials, SF double-layer tanks, etc. At the same time, we also undertake the construction of steel structures, grid frames, and pipe truss structures, which not only have high quality and high performance, but also have an innovative and stylish feeling. 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