Liquefied petroleum gas pressure regulating the working principle of pneumatic valve

gas decompression after work by pneumatic valve pneumatic valve to control the pressure. When pressure sensor detected instruction pneumatic valve pressure, reduced pressure pneumatic valve pneumatic valve opening decreased; When they tested the vacuum pneumatic valve after pressure decreases, and reduced pressure pneumatic valve pneumatic valve open, in order to meet the control requirements. Decompression of the steam pressure pneumatic valve pneumatic valve ratio must be higher than the system to a certain extent value; Even in the maximum or minimum flow, it should also be able to respond to positive action and reaction control signal. The pneumatic control valve should be useful for range selection, namely % and % of maximum flow. Normal is geometric model or geometric characteristics. These types of pneumatic valve itself with proportional control required by the best flow characteristics and flow range.
gas reduced pressure pneumatic valve by the main pneumatic valve and pneumatic valve guide of two parts. The pneumatic valve is mainly composed of pneumatic seat, main pneumatic valve, piston, spring and other parts. Guide the pneumatic valve is mainly composed of pneumatic valve seat, pneumatic valve, diaphragm, spring, adjusting spring and other parts. Set by adjusting the adjusting the spring pressure outlet pressure, the use of diaphragm sensing outlet pressure changes, through the pneumatic valve opening and closing drive piston guide adjustment main pneumatic valve throttling area the size of the flow area, realize the function of reduced pressure regulator.
tool different forms have different specific works. But the general principle is: the relief of pneumatic valve is through the opening and closing the throttle, reduced the inlet pressure to a needed discharge pressure, and make the outlet pressure remained stable. But generally reduced pressure pneumatic valve must require import and export pressure difference or greater. Mpa