Novel feed water adjusting valve

Abstract

The invention relates to a novel water supply regulating valve. Including the valve body, a valve seat is arranged in the middle of the valve body, a valve cover is installed on the upper end of the valve body, a throttle ring is arranged above the valve seat, a flow equalizing cover is arranged above the throttle ring, and an annular groove is arranged on the upper end of the flow equalizing cover. The lower end surface of the valve cover is provided with an annular boss located in the annular groove, and a valve cover sealing ring is provided between the annular groove and the annular boss. There is a spool with a balance hole, the upper end of the spool is connected to the valve stem, the upper end of the valve stem runs through the bonnet, a sealing ring is arranged between the upper end of the bonnet and the valve stem, and a throttle plate is set at the lower end of the valve seat. A number of throttle holes are arranged on the flow plate, a Y-shaped sealing ring is arranged on the upper end of the valve core, and a retaining ring is arranged on the upper end of the Y-shaped sealing ring. The invention has a simple structure, realizes multi-stage throttling by adding throttling rings and throttling plates, effectively prevents scours, thereby achieves the effect of reducing noise and prolongs the service life.

Description

technical field [0001] The invention relates to a novel water supply regulating valve. Background technique [0002] Control valve, also known as control valve, in the field of industrial automation process control, is the final control element that changes the process parameters such as medium flow, pressure, temperature, liquid level, etc. by means of power operation by receiving the control signal output by the adjustment control unit. It is generally composed of actuators and valves. Regulating valves play a very important role in the automatic control of modern factories whose production depends on the correct distribution and control of the flowing medium. Whether these controls are energy exchange, pressure reduction or simple container filling, some final control elements are required to complete. The feed water regulating valve is installed on the pipeline before the feed water pump to regulate the feed water for boiler startup. When the feed water pump is runnin...

AI Technical Summary

Problems solved by technology

Due to the difference in material and structure, the performance of the currently used water supply regulating valve is quite different. Under the strong erosion of 20Mpa, it is impossible to achieve the maximum throttling and pressure reduction, so that the liquid flow is partially vaporized, and flashing and cavitation occur. , which will cause leakage, waste energy, damage the operating system, and produce a lot of noise, reducing the service life of the control valve

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