Characteristics and principle of proportional pressure reducing valve
Classification:
Release Time：2020-08-05
The proportional pressure reducing valve belongs to the high pressure valve series, which is suitable for metallurgy, petroleum, hydraulic and hydrostatic test equipment. Main purpose: decompression function is achieved by throttling energy consumption, proportional pressure reducing valve can make high pressure, high pressure equipment and high pressure pipe high pressure water through the valve, the high pressure water reduced to low pressure required pressure after discharge, so that the pressure of high pressure system evenly reduced.
proportional pressure reducing valveBelongs to the high pressure valve series, suitable for metallurgy, petroleum, hydraulic and hydrostatic test device. Main purpose: decompression function is achieved by throttling energy consumption, proportional pressure reducing valve can make high pressure, high pressure equipment and high pressure pipe high pressure water through the valve, the high pressure water reduced to low pressure required pressure after discharge, so that the pressure of high pressure system evenly reduced.
proportional pressure reducing valveProduct features:
It consists of a cylinder and a valve body. The orifice plate and the high-pressure regulating valve are designed as a whole, and the discharge flow and pressure reduction of the valve switch are controlled by the hydraulic cylinder stroke. It is safe and convenient to adjust the discharge pressure and flow at will.
proportional pressure reducing valve: The pressure drop can be adjusted from 50 MPa to 1.6 MPa.
working principle of proportional pressure reducing valve:
proportional pressure reducing valveThe opening of the pilot valve is to use the adjusting bolt on the top to rotate clockwise, so that the elastic force generated by the contraction of the spring causes the diaphragm of the pilot valve to sag downward, and the force acting on the pilot valve connecting rod causes it to displace downward to open the pilot valve. When the proportional pressure reducing valve is opened, the steam in chamber A of the upstream steam inlet pipe section enters the annular steam chamber of the pilot valve through the channel (steam supply regulating channel), and is directly sent to the upper chamber of the lower piston cylinder through the channel. With the continuous supply of steam from chamber A, the pressure continues to rise, pushing the piston downward to open the main valve, and then the steam continues to flow from chamber A to chamber B. When the chamber B load of the downstream outlet pipe section is satisfied, the excess steam causes the chamber B pressure to continue to rise. The rising pressure is fed back to the lower chamber of the pilot valve diaphragm through the channel (pressure sensing channel) to makeproportional pressure reducing valveThe diaphragm protrudes upward, overcoming the pressure of the upper regulating spring, and the pilot valve is closed or closed. Thus, the steam source from the upstream alpha channel is turned off or off. When the pressure in the upper chamber of the piston cylinder drops, under the action of the lower return spring, the main valve of the proportional pressure reducing valve is closed or closed, and then the pressure in the B chamber begins to drop, so as to achieve the purpose of repeated pressure regulation.
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