Other introduction

Pressure vessel

A sealed container that bears gas or liquid pressure inside or outside and has high requirements for safety.

In the early chemical industry, the reaction pressure was mostly below 10 MPa. However, after the emergence of high-pressure production processes such as synthetic ammonia and high-pressure polyethylene, the pressure of the pressure vessel is required to exceed 100 MPa. With the development of the chemical and petrochemical industries, the working temperature range of pressure vessels has become wider and wider, and the capacity has continued to increase. Some of them require medium corrosion resistance.

Beginning in the 1960s, the development of nuclear power plants put forward higher safety and technical requirements for reactor pressure vessels, which promoted the further development of pressure vessels and was widely used in various industrial sectors. Pressure vessels are mainly cylindrical, but also spherical or other shapes.

According to the structure, it can be divided into multi-layer pressure vessels, plate-wound pressure vessels, groove-wound belt pressure vessels, heat-sleeve pressure vessels, forge-welded pressure vessels and thick-plate coil-welded pressure vessels.

Most pressure vessels are made of steel, and some are made of non-ferrous metals such as aluminum and titanium, and non-metallic materials such as glass steel and prestressed concrete. If a pressure vessel explodes during use, it will cause a catastrophic accident. In order to make pressure vessels achieve the goals of advanced design, reasonable structure, easy manufacture, reliable use and cost-effective construction under the premise of ensuring safety, all countries have formulated relevant pressure vessel standards, specifications and technical conditions according to their own specific conditions.

The design, manufacture, inspection, and use of the company put forward specific and mandatory regulations.