Proportional pressure reducing valve product features and working principle
Classification:
Release Time：2021-05-21
Proportional pressure reducing valve is a high pressure valve series, suitable for metallurgy, petroleum, hydraulic, hydraulic testing unit. Main purpose: is the use of throttling energy consumption to achieve the function of pressure reduction, can make high pressure, high pressure equipment and high pressure pipe high pressure water through the valve will be reduced to low pressure after the required pressure discharge, so that the high pressure system pressure evenly reduced.
Proportional pressure reducing valve is a high pressure valve series, suitable for metallurgy, petroleum, hydraulic, hydraulic testing unit. Main purpose: is to achieve the function of reducing pressure by throttling energy consumption, which can make high-pressure, ultra-high-pressure equipment and high-pressure water in high-pressure pipelines drop high-pressure water to low-pressure required pressure through this valve and then discharge it, so that the pressure of the high-pressure system is uniformly reduced.
Proportional pressure reducing valve product features
It is composed of two parts: cylinder and valve body. The throttle orifice and high-pressure regulating valve are designed as a whole, and the valve switch discharge flow and pressure reduction are controlled by the hydraulic cylinder stroke. Can arbitrarily adjust the discharge pressure and flow, safe and convenient. Proportional pressure reducing valve: pressure drop from 50 MPa to 1.6 MPa, can adjust the discharge pressure.
Working principle of proportional pressure reducing valve
The opening of the pilot valve is to use the adjusting bolt on the top to turn it clockwise, so that the elastic force generated by the spring contraction makes the pilot valve diaphragm sag downward, and the force acting on the pilot valve connecting rod makes it move downward to open the pilot valve. When the pilot 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 α channel (steam supply regulating channel), and is directly sent to the upper chamber of the piston cylinder below through the β channel. Under the continuous supply of steam in cavity A, the pressure continues to rise, pushing the piston down to open the main valve, and then the steam continuously flows from cavity A to cavity B. When the downstream outlet pipe section B cavity load is satisfied, the remaining steam makes the pressure in the B cavity rise continuously. The rising pressure is fed back to the lower chamber of the pilot valve diaphragm through the γ channel (pressure sensing channel), so that the pilot valve 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 shut off. When the pressure in the upper cavity of the piston cylinder drops, the main valve is turned down or closed under the action of the return spring below. At this time, the pressure in the B cavity begins to drop, so that the purpose of pressure regulation is achieved over and over again.
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