Common materials for inner and outer tanks of cryogenic storage tanks

Cryogenic storage tank is a common pressure vessel equipment for storing cryogenic liquids. It plays an important role in many industrial fields. Depending on the type and nature of the liquid stored in the storage tank, the use and maintenance methods are different, corresponding needs Note the safety matters also have their own characteristics.
   
 The cryogenic storage tank is a double-layer vacuum insulation tank. The material used for the inner tank is austenitic stainless steel; cryogenic storage tanks usually consist of an inner tank, an intermediate insulation layer, and an outer tank.

1. The inner tank of the pressure vessel is a liquid-tight and flexible inner container made of thin cryogenic steel plate. Nickel steel, stainless steel or aluminum alloy is usually used.

2. The outer tank of a pressure vessel is an outer shell capable of withstanding various loads, and it must have sufficient strength. According to the materials used, it can be divided into the following types: frozen soil wall, steel wall, reinforced concrete wall and prestressed concrete wall.
   
 Reinforced concrete and prestressed concrete are very good cryogenic materials. Even if the film is damaged, the cryogenic storage liquid will not damage the outer wall when it contacts the prestressed concrete wall. Cryogenic storage tanks should be regularly maintained during use in order to increase the service life of the equipment and ensure the use of the storage tanks. If the equipment fails, it will not only affect the storage in the tank, but also increase the overall operating cost of the enterprise due to replacement and maintenance of equipment. Therefore, mastering strict operating methods and maintenance methods is the basis for ensuring the normal operation of storage tank enterprises. The working environment of the cryogenic storage tank should be kept ventilated and dry.