Let Professionals Tell You How To Detect The Safety Valve Of The Air Compressor
Mar 08, 2022
The safety valve of air compressor is the key guarantee for the safe application of pipeline and pressure vessel, and it is one of the accessories of air compressor. In order to ensure the normal operation of the safety valve and prolong the service life of the safety valve, it is necessary to regularly check whether the safety valve in use has abnormal phenomena, leakage, jamming, spring rust, etc. Pay attention to the adjusting screw sleeve and adjusting ring. If any problem is found when the adjusting screw locknut is loose, please take appropriate maintenance measures in time.
The air compressor safety valve is an automatic valve. Its working principle is to discharge the medium to the outside of the system to prevent excessive medium pressure when the medium pressure in the air compressor or pipeline exceeds the specified value. Special valves for pipelines or equipment exceeding the specified value can play an important role in protecting the operation and personal safety of the air compressor when the control pressure does not exceed the specified value. According to the supervision regulation on safety technology of safety valves, the regular calibration of safety valves is usually carried out at least once a year, and the technical safety specifications shall be strictly observed.
How to detect the safety valve of air compressor?
1. Off line calibration: install the safety valve on the calibration table, then open the safety valve with the calibration medium and confirm the opening pressure by observing the pressure gauge. However, this method cannot consider the calibration of back pressure safety valves and safety valves for high or low temperature media.
2. Online calibration: it is the verification of the downward elasticity of the external force acting on the safety valve, and the opening pressure of the safety valve can be calculated by this method. This method generally does not affect the production, and the detection speed is relatively fast, more convenient and convenient, but this method can not detect the sealing performance of the safety valve.
3. Calibration of boost jump method: the system artificially increases the pressure until the safety valve jumps to observe the opening pressure of the safety valve. This verification method will damage the professional sealing surface of the safety valve, and the risk of operation is greater than other methods.
Precautions for using air compressor safety valve:
1. The pressure will rise rapidly, and the discharge rate of the safety valve is less than the pressure rise rate.
2. There are strict sealing requirements.
3. The material in the container will cause the failure of the safety valve. If the material in the container contains many solid particles, the safety valve will not be tightly sealed after sedimentation.
4. The container material is highly toxic or has other characteristics that hinder public safety.
