Pressure vessel (equipment carrying a certain pressure or containing flammable and explosive materials)

Pressure vessel refers to a closed device that contains gas or liquid and carries a certain pressure. In order to implement scientific management and safety supervision and inspection more effectively, my country’s “Pressure Vessel Safety Supervision Regulations” divides pressure vessels into three categories according to working pressure, medium hazards and their role in production.

And for each category of pressure vessels in the design, manufacturing process, as well as inspection items, content and methods have made different regulations. The pressure vessel has implemented the import product safety and quality licensing system, and the products that have not obtained the import safety and quality license are not allowed to be imported. It should be divided according to the latest TSG21-2016 “Stationary Pressure Vessel Safety Technical Supervision Regulations”. First, the medium is divided into the first group of media and the second group of media, and then the pressure and volume are divided into categories I, II, and III , The so-called first, second, and third categories of the old Rong regulations are no longer applicable.

A pressure vessel is a closed vessel that can withstand pressure. The use of pressure vessels is extremely wide, and it has an important position and function in many sectors such as industry, civil, military, and many fields of scientific research. Among them, the most used in the chemical industry and the petrochemical industry, pressure vessels used in the petrochemical industry alone account for about 50% of the total number of pressure vessels. In the chemical and petrochemical industry, pressure vessels are mainly used for heat transfer, mass transfer, reaction and other processes, as well as storage and transportation of pressurized gas or liquefied gas; it is also widely used in other industrial and civil fields, such as air compressor. All kinds of special compressors and auxiliary equipment of refrigeration compressors (coolers, buffers, oil-water separators, gas storage tanks, evaporators, liquid coolant storage tanks, etc.) are all pressure vessels.