Brief introduction of spring safety valve
The spring safety valve is a kind of safety valve, which is also to ensure the normal operation of the system and solve the existence of abnormal parts in the system. The spring safety valve is a device specially set up for the exhaust pipe to be blocked due to misoperation or uncleaning.In addition to controlling its seat pressure by the compression degree of the spring, the safety valve can also control its action by pushing the piston through compressed air.
Spring safety valve classification
1. Spring slightly open closed high pressure safety valve
The opening height of the micro-opening safety valve is less than 1/4 of the flow channel diameter, usually 1/40-1/20 of the flow channel diameter. The action process of the micro-opening safety valve is a proportional action, which is mainly used in liquid occasions, and sometimes in gas occasions with a small discharge.
2. Spring full lift safety valve
The opening height of the full lift safety valve is greater than or equal to 1/4 of the flow channel diameter. The discharge area of the full lift safety valve is the smaller cross-sectional area of the throat of the valve seat. Its action process is a two-stage action type, and it must be fully opened by means of a lifting mechanism. The fully opened safety valve is mainly used in the occasion of gas medium.
3. Center lift safety valve
The opening height is between the slight opening type and the full opening type. That is, it can be made into two-stage action, or it can be made into proportional action.
The shaped spring safety valve has the advantages of sensitive opening and closing, good tightness, long service life, etc., and is used in some large-capacity boilers.