How to calculate safety pneumatic valve setting pressure

security pneumatic valve is boiler, pressure vessel and other pressure equipment on important safety accessories. Its operating reliability and performance is directly related to the equipment and personal safety, and closely related to energy saving and environmental protection. Security pneumatic valve pressure setting is too high in case of danger is not open in time, easy to cause accidents; Pressure setting too low will appear the phenomenon such as running, running, a waste of energy and the environment, sometimes because of frequent takeoff damages to the safety of pneumatic valve sealing surface.

security pneumatic valve setting pressure ( Also called opening pressure) Is the equipment when the pressure is too high to the pneumatic valve can open one of the important parameters in time. Once a year we usually check the safety of the pneumatic valve is mainly to check the safety of the pneumatic valve with or without internal damage sealing surface without damage, and the safety of pneumatic valve setting pressure setting back, best to keep the safety of the pneumatic valve open. To see the importance of safety pneumatic valve pressure setting, that how to calculate the safety of the pneumatic valve setting pressure? The following is the calculation method of steam boiler and pressure vessel do the introduction.

, steam boiler safety pneumatic valve setting value:




the rated steam pressure ( MPa）


setting pressure value ( Two pneumatic valve, respectively)




≤.


+ work pressure. MPa: +, work pressure. MPa




. < P≤。


. Times the working pressure,. Times of working pressure




>.


. Times the working pressure,. Times the working pressure of





pneumatic valve, boiler must have a safety pressure adjustment according to the low setting in the table.
in the table of work pressure, refers to the safety of pneumatic valve installation location of work pressure.
the setting pressure, gas saving, reheater is installed site work pressure. Times.

pneumatic valve setting pressure, pressure vessel safety;
only install a safety pneumatic valve, opening pressure should not be greater than the design pressure, and sealed experiment pressure is greater than the maximum working pressure container, i. e. , the maximum working pressure < opening pressure design maximum working pressure (or less Opening pressure generally as the highest working pressure. - 。 Times) Security setting parameters of the pneumatic valve a relatively rigorous work, choose appropriate setting pressure parameters will directly affect the safety of equipment, in this to provide the above calculation method for the comrades to study communication, to ensure that we work together in a safe environment.