Special water self-reliance type pneumatic valve using method, the principle adjustment

the sea special self-reliance type pressure regulating pneumatic valve is does not require any additional energy, USES the energy of modulated medium to achieve automatic adjustment of the actuator products. The biggest characteristic of products can work in places where no electricity, no gas, at the same time, save energy, pressure setting can be adjusted freely in the run. Use quick opening traffic characteristics, action quick, sealed performance is good, so it is widely used in petroleum, chemical, electric power, metallurgy, food, textile, machinery manufacturing and residential building blocks, all kinds of industrial equipment of all kinds of gas, liquid and steam decompression, medium voltage ( After used in pneumatic valve adjusting) , or pressure, holding pressure ( Used in pneumatic valve adjustment) The automatic control. Attached the condenser can be used in ℃ temperature or less.
the sea special self-reliance type pressure regulating pneumatic valve using method
. Using a gas at room temperature or low viscosity liquid situations of operation:
( ） Slowly open the pneumatic valve by pneumatic valve before and after;
( ） Unscrew the vent plug, until gas or liquid from the actuator overflow
( ） And then to tighten vent plug, adjust the pneumatic valve can work. The size of the required pressure value can be obtained by the adjustment of the pressure adjusting plate, adjust, observe the pressure marking value, action is slow, not to rotate the pneumatic valve rod with
. Situations of using steam operation:
( ） Twist on liquid from the condenser mouth screw
( ） Unscrew the actuator vent plug
( ) Use leakage liquid head through the mouth to join until vent outflow
( ) Tighten vent plug and continue the injection water until the overflow mouth
( ) Tighten the filler mouth screw
( ) Slowly open before and after regulating pneumatic valve by pneumatic valve
( ) Adjust the pressure adjusting plate, and observe the pressure met the requirement of the said value.
self-reliance type pressure adjusting working principle of the pneumatic valve ( Pneumatic valve after pressure control)
working medium of the pneumatic valve, pneumatic pressure p after pneumatic valve core seat before throttling after, a pneumatic valve after pressure p. P input through the control line to the actuator in particular of the film under the indoor function of force and reacting force of spring balance, determines the relative of the pneumatic valve, pneumatic valve seat position, pneumatic control valve after pressure. When the pneumatic valve pressure P increases, the P role in particular of force also will increase. At this point, in particular the reaction force is greater than the spring, make the pneumatic valve core is close to the location of the pneumatic valve seat, until a particular reaction and the reaction force of spring balance. At this time, the pneumatic valve core and valve seat area to reduce the circulation, flow resistance, so that the P down to a set value. Similarly, when the pneumatic valve pressure P falls, direction, contrary to the above, this is self-reliance type ( After the pneumatic valve) The working principle of pressure regulating pneumatic valve.
self-reliance type pressure adjusting working principle of the pneumatic valve ( Pneumatic valve pressure control)
working medium of the pneumatic valve, pneumatic pressure P after pneumatic valve core seat before throttling after, a pneumatic valve after pressure P. At the same time P input through the control line to the actuator in particular of the membrane on the indoor function of force and reacting force of spring balance, determines the relative of the pneumatic valve, pneumatic valve seat position, pneumatic control valve pressure before. When the pneumatic valve pressure P increases, the P role in particular of force also will increase. At this point, in particular the reaction force is greater than the spring, make the pneumatic valve core to leave the seat direction, until a particular reaction and reaction force of spring balance. At this time, the seat of the circulation area of pneumatic valve core and pneumatic reduction, flow resistance smaller, making the P down to a set value. Similarly, when the pneumatic valve pressure P falls, direction, contrary to the above, this is self-reliance type ( Pneumatic valve before) The working principle of pressure regulating pneumatic valve.
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