The working pressure of the low-temperature storage tank is 60 cubic meters. The manufacturer of the low-temperature storage tank

Description :

　　We know that low-temperature storage tanks are mainly used for the storage and transportation of flammable and explosive materials. Low temperature storage tanks are well sealed containers with low internal temperatures, suitable for storing liquid argon, etc. The use of storage tanks can greatly ensure transportation safety. Everyone knows that low-temperature storage tanks have working pressure. Below, we will take a detailed look at the working pressure of low-temperature storage tanks in Xining.

　　Low temperature storage tanks can be divided into large atmospheric low-temperature storage tanks and low-pressure storage tanks. Low temperature storage tanks can be divided into atmospheric pressure low-temperature storage tanks in terms of volume, with equipment consisting of flat bottomed arch covers, vertical double wall structures, sandwich filled perlite insulation, and nitrogen filling protection. Install internal and external breathing valves and emergency pressure relief devices to ensure the safe operation of the equipment. Vertical storage tanks generally adopt a sling structure, and all contents in contact with the equipment are made of 304 stainless steel material. The main purpose of all structures is to reduce heat transfer and economy, and to minimize the impact of heat transfer on the evaporation of low-temperature media. Horizontal storage tanks generally adopt sliding support structures, supported by high-strength FRP rods, with high strength and low thermal conductivity. FRP rods have high strength, but their thermal conductivity is only 1/10 of stainless steel. By using FRP reinforcement as support, the reliability of equipment strength and thermal leakage of the equipment have been achieved.

　　The working pressure of LNG low-temperature storage tank is 15KPa, and the working temperature is -162 ℃. It is a flat bottomed double walled cylinder. The tank body consists of two layers, the inner and outer layers, which are insulated structures and serve as insulation layers. The inner tank is used to store liquefied natural gas, and the outer shell has protective and cooling functions. In order to reduce external heat entering the storage tank, the designed inner and outer storage tanks are separate and independent. The neck of the tank is a self-supporting arch, and it needs to be strong and stable enough to withstand the external pressure caused by the cooling material and the internal pressure caused by the internal gas. The storage tank uses perlite sand as the insulation material, filled with dry nitrogen gas to ensure a slight positive pressure in the interlayer and isolate the insulation material from the atmosphere. Avoiding the influence of atmospheric pressure or temperature changes, as well as the entry of humid air into the insulation layer between the inner and outer tanks. Improved the service life of insulation materials, effectively ensuring and improving the use of insulation materials. effect. In the design and manufacturing of insulation structures, moisture-proof measures need to be taken.

　　The boiling point of liquefied natural gas at atmospheric pressure is -160 ℃. LNG is stored at low temperature and atmospheric pressure, reducing the temperature of natural gas below its boiling point and allowing the working pressure of the storage tank to be slightly higher than atmospheric pressure. Compared with high-pressure and room temperature storage methods, liquefied natural gas can greatly reduce the wall thickness of storage tanks and improve their safety performance. Therefore, LNG requires liquid storage tanks to have good low-temperature resistance and excellent cold insulation performance. Due to the storage of low-temperature liquids in storage tanks, in the event of an accident, the refrigerated liquid will evaporate significantly, with a gasification amount approximately 300 times that of the original refrigeration state, and will automatically form explosive gases in the atmosphere. Therefore, API, BS and other specifications require storage tanks to adopt a double wall structure and a blocking concept. In the event of a tank leak, the second storage tank can block the leakage of liquid and steam, ensuring the safety of the tank.

　　In industrial production, in order to improve storage and transportation efficiency, liquefied gases need to rely on high-pressure or low-temperature maintenance liquids. At present, low-temperature storage tanks are widely used in many industries, and their application effects are good. With the continuous development of domestic and international economies, the storage scale and demand for liquefied natural gas are constantly increasing, and the demand for low-temperature storage tanks is also increasing. We also believe that the development of low-temperature storage tanks will become better and better.

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• Working pressure of low-temperature storage tanks