One minute to explain the function of the proportional pressure reducing valve
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Release Time：2022-09-26
Proportional pressure reducing valve is also called pilot valve. In the view of environmental protection equipment network, the proportional pressure reducing valve should be a series of high pressure valves. Mainly used in metallurgy, petroleum, hydraulic press and other hydraulic test units. Proportional pressure reducing valve is the function of throttling energy consumption and decompression, which can make the high-pressure equipment and high-pressure water channel in the high-pressure pipeline discharge the high-pressure water to the pressure required for low pressure through this valve, so that the pressure of the high-pressure system can be reduced evenly.
Proportional pressure reducing valve is also called pilot valve. In the view of environmental protection equipment network, the proportional pressure reducing valve should be a series of high pressure valves. Mainly used in metallurgy, petroleum, hydraulic press and other hydraulic test units.Proportional pressure reducing valve is the function of throttling energy consumption and decompression, which can make the high-pressure equipment and high-pressure water channel in the high-pressure pipeline discharge the high-pressure water to the pressure required for low pressure through this valve, so that the pressure of the high-pressure system can be reduced evenly. The proportional pressure reducing valve is to achieve different pressure values at the inlet and outlet by replacing the valve core and the cylinder liner. It cannot adjust the outlet pressure value by itself. There is no guarantee that the outlet pressure is a constant value, which is the main difference from the adjustable pressure reducing valve.
In the water supply system, the proportional pressure reducing valve is generally used together with the adjustable pressure reducing valve. Installed in front of the adjustable pressure reducing valve, mainly to reduce the outlet pressure proportionally. Then through the adjustable pressure reducing valve for the user to set a pressure value. To maintain the stability of the user's water supply, not only can play the role of grading decompression, but also can improve the safety of water supply, to avoid a valve failure, resulting in water supply overpressure.
Work Flow of 1. Proportional Pressure Reducing Valve
The opening of the proportional pressure reducing valve is to make full use of the clockwise rotation of the top adjusting screw, so that the elastic force generated by the elastic contraction makes the proportional pressure reducing valve diaphragm sag downward, and the force acting on the proportional pressure reducing valve connecting rod moves downward to open the proportional pressure reducing valve.
When it is opened, the steam in the cavity of the upstream inlet pipe section can enter the annular steam cavity of the pressure reducing valve through the channel (steam supply adjustment channel), and can be directly sent to the chest and abdomen of the lower piston cylinder through the channel. With the continuous supply of steam in the chamber, the piston pressure continues to rise, pushing the piston to slide down and open the main valve. At this time, steam continuously flows from chamber A to chamber B. When the load in cavity B of the lower outlet pipe meets the requirements, the excess steam will maintain the pressure rise in cavity B.
The rising pressure can be fed back to the lower chamber of the proportional pressure reducing valve diaphragm through the gamma channel (pressure sensing channel), so that the proportional pressure reducing valve diaphragm bulges upward, thus avoiding the upper pressure adjustment turning yellow and being lowered or closed. Further, the steam source from the upstream alpha channel is turned down or turned off.
When the pressure in the thoracic and abdominal cavity of the piston cylinder decreases, the main valve is closed or closed under the action of the lower reset bell mouth. At this time, the pressure in the B cavity gradually begins to decrease, so it is necessary to achieve the purpose of pressure regulation through this cycle.
Performance Benefits of 2. Proportional Pressure Reducing Valves
The proportional pressure reducing valve and the throttle orifice plate and the high-pressure regulating valve are designed as an integration. The total discharge flow and pressure reduction of the valve switch are controlled by the stroke arrangement of the hydraulic cylinder. The exhaust pressure and total flow can be adjusted freely, which is stable and convenient. Beautiful appearance, stable quality, accurate proportion and stable work. It reduces dynamic pressure and static pressure. The pressure drop is from 50Mpa to 1.6Mpa, and the discharge pressure can be adjusted.
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