The function of the safety valve is to protect the safe […]
The function of the safety valve is to protect the safety of the pressure vessel, pipeline, and boiler where it is located. When the internal pressure of the pressure vessel, pipeline, and boiler system is overpressured, that is, when the set pressure of the safety valve is exceeded, the safety valve will open, the medium will be discharged, the pressure will drop, and the safety valve will be closed.
The safety valve is a special valve that which the opening and closing parts are in a normally closed state under the action of external force. When the pressure of the medium in the equipment or pipeline rises beyond the specified value, it discharges the medium to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. . Safety valves are automatic valves, mainly used in boilers, pressure vessels and pipelines. The control pressure does not exceed the specified value, which plays an important role in protecting personal safety and equipment operation. NOTE The safety valve must be pressure tested before it can be used.
The safety valve is a special branch of the valve family. It is special because it is different from other valves that only play the role of a switch, and more importantly, it plays the role of protecting the safety of the equipment. With the rapid development of my country's economic construction, there are more and more equipment projects with pressure control. In view of the need for equipment pressure relief, the safety valve plays a vital role in the process of protecting equipment, and the safety valve plays a role in safety protection in the system. When the system pressure exceeds the specified value, the safety valve is opened, and part of the gas/fluid in the system is discharged into the atmosphere/pipeline, so that the system pressure does not exceed the allowable value, thus ensuring that the system does not cause an accident due to excessive pressure.
There are two main types of safety valve structures: spring type and lever type. Spring type means that the sealing between the valve disc and the valve seat depends on the force of the spring. The lever type relies on the force of a lever and a heavy hammer. With the need for large capacity, there is another kind of pulse safety valve, also known as a pilot safety valve, which consists of the main safety valve and auxiliary valve. When the medium pressure in the pipeline exceeds the specified pressure value, the auxiliary valve is opened first, the medium enters the main safety valve along the conduit, and the main safety valve is opened to reduce the increased medium pressure.