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Liquefied gas underground storage tanks are equipment buried beneath the surface. They are treated with cathodic anti-corrosion and thermal insulation and are used to store liquefied petroleum gas. Liquefied gas underground tank components: saddle, tank, manhole cover, liquid level gauge, thermometer, safety valve, liquid inlet and outlet, sewage outlet, gas phase balance port, etc. Among them, the saddle is an important foundation for stabilizing the storage tank and maintaining balance. It is under the storage tank; the tank body includes the cylinder and the head. The thickness of the raw materials used is calculated according to the capacity of the liquefied gas; the corresponding safety Accessories: liquid level gauge, thermometer, pressure gauge, safety valve, liquid inlet and outlet, gas phase balance port, etc. are all integrated and distributed on the manhole cover above. The difference between single manhole and double manhole of underground storage tank: the so-called single manhole and Double manhole underground tank refers to the technical design of applying one manhole cover or two manhole covers on the top of the storage tank.

1. The design of the single-manhole underground storage tank is relatively simple, the product cost is cheap, and raw materials are saved; the two manholes of the double-manhole underground storage tank are convenient for later tank inspection, and the valve accessories have a reasonable layout and structure and are easy to operate.

2. The single-man hole underground storage tank is not easy to operate for tank inspection, and the loading, unloading and transportation of liquefied gas is not as easy as the two-person hole. The cost of the double-man hole underground storage tank is higher, and the design and tank inspection costs are high.

Underground liquefied gas storage tanks are also called underground liquefied gas tanks. This is mainly because the site is limited, which can halve the distance between the storage tank and the building, make reasonable and effective use of the land area, and make the overall appearance and coordination after installation.

When installing underground liquefied gas storage tanks, you must pay attention to the anti-corrosion of the storage tank body. If necessary, cathodic anti-corrosion is also required (the outer surface is painted with epoxy asphalt paint twice and epoxy asphalt primer twice). The yellow color of the backfill soil is also required. The sand must be fine and the particles must be uniform, and sewage must be discharged well! Our company can design and manufacture various types of liquefied gas storage tanks ranging from 5m3 to 200m3 for users. Users can choose storage tanks of different capacities according to their own needs.

Liquefied gas underground tanks are the same as road tanks. The design and structure of underground tanks are usually double elliptical heads and double saddle supports, horizontal cylindrical containers, but the connection parts are different, safety valves, vent valves, Pressure gauges are distributed on the manhole cover, and some are evenly distributed on the wall of the tube below the manhole cover. For large-capacity storage tanks, due to the increased size of nozzles, flanges and safety fittings, it is usually recommended to set up two manholes to facilitate the reasonable arrangement of nozzles. (It is recommended to set up two manholes for liquefied gas geological tanks of more than 50 cubic meters).

Installation of Lpg Underground Tank

1. These issues should be considered when installing a liquefied gas underground tank. Use some fine sand to fill the upper surface of the underground tank. Requirements: The sand grains are uniform in size and fine, with a depth of about 400mm.

2. Underground liquefied gas tanks must have good cathodic anti-corrosion. The tank body of the liquefied gas storage tank is in contact with the minerals in the soil environment and will be corroded by acid, alkali and salt substances in the long-term corrosion process. Tanks can cause serious damage. Therefore, for equipment related to liquefied gas distribution and supporting facilities, we mainly do a good job in cathode corrosion protection, and use the 'impressed current protection method' to connect the protected metal to the negative electrode of the power supply, and choose an inert material that can conduct heat to connect. Positive power supply. After being plugged in, the metal surface causes the accumulation of negative charges (electrons), thereby inhibiting the metal from losing electrons and achieving protection purposes. Prevent metal equipment of liquefied gas storage tanks from being corroded in soil environment, sea water and river water.

3. The installation of underground liquefied gas tanks should facilitate future testing and inspection. The fire department and special equipment testing units will regularly conduct corresponding assessments based on the application of the storage tanks. Therefore, when necessary, they will also enter the storage tanks through manholes. Check the equipment for corrosion and whether there are cracks in the welds.

4. When installing a liquefied gas station, in order to control the wall temperature of the storage tank to not exceed 50°C, consideration should be given to installing a rain shelter and water spray equipment in the storage tank area to reduce the temperature and insulate the tank to prevent the container from being damaged by the wall. The temperature is too high and an overvoltage condition occurs. This is especially necessary in areas with higher ambient temperatures in summer, such as Wuhan, Nanjing and other areas. When manufacturing the rain shelter, it should be ensured that the load-bearing beam is no less than 2m away from the top of the storage tank. The purpose is to facilitate the installation or operation of the liquefied gas storage tank and for the safety of the workers.

5. Liquefied gas underground tanks are pressure vessels that store liquefied petroleum gas. Liquefied gas (lpg) underground tanks are mainly restricted by dry sites, which can halve the distance from the storage tank to the building and rationally utilize the land area. After installation Overall beautiful and coordinated. Shandong Cathay Metal Container Manufacturing Co., Ltd. designs and manufactures various types of liquefied gas underground storage tanks of 10-100m3 for customers. Customers can choose storage tanks of different volumes according to their own requirements, including 20cbm, 32cbm 50cbm, 80cbm volume liquefied petroleum gas underground storage tanks are recommended products by our company.

6. When installing liquefied gas underground storage tanks, you must pay attention to the anti-corrosion of the storage tanks. If necessary, cathodic anti-corrosion must be done. The backfilled yellow sand must be fine and the particles are uniform. At the same time, the sewage discharge must be done well.

» I.Product Describution: 

» II.Truck Specification

» III.More Details Photos

»  IV. SHIPPING:RORO/BULK VESSEL/CONTAINER
RORO: The truck is driven to the ship inside directly and fixed well. It can protect the truck being rusty and broken during shipping. 
BULK:  The truck is lifted by Crane then put on the vessel deck. This model is much cheaper.
CONTAINER: The truck is put into the container. This model is used for small model trucks