A pressure reducing valve with precise setting of pressure limit

Abstract

The invention relates to the technical field of pressure reducing valves, and discloses a pressure reducing valve with precise setting of pressure limiting, including a valve body, a pressure limiting device, a compensation device and an adjustment device, the valve body and the pressure limiting device are movably connected, the compensation device and The valve body is connected, and the adjusting device is connected with the valve body. There are several liquid inlets on one side of the valve body. , a number of liquid inlets are connected to the working chamber at the end far away from the liquid inlet pipe. There is a liquid outlet on the valve body, and a liquid discharge pipe is provided at the end of the liquid outlet. The liquid discharge pipe is connected to the liquid outlet. , when carrying out multi-pipeline layered transportation, by cutting off the liquid inlet pipe where the conveyed medium is located, the efficiency of liquid distribution is improved, and multiple sets of pressure reducing valves are avoided to improve the opening and closing efficiency. The medium transported by the liquid inlet pipe passes through the liquid inlet The mouth is sent into the working chamber, which is convenient for pressure-limited shunt.

Description

technical field [0001] The invention relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve with precise setting of pressure limit. Background technique [0002] The pressure reducing valve is often used in the fluid medium transportation process, and the high-pressure fluid is decompressed through the pressure reducing valve, which is convenient for use and prevents safety hazards caused by excessive medium pressure. [0003] Existing pressure reducing valves mostly rely on their own energy to keep the outlet pressure stable, and adjust it by changing the flow area of ​​the valve port. However, whether it is a plate-type or disc-type regulating mechanism, when the medium changes in the pressure reducing valve, it will hinder the medium. Therefore, the impurities in the medium are easy to cause deposition on the collision surface, thus affecting the long-term on-off performance. . [0004] In addition, most of the existing pr...

AI Technical Summary

Problems solved by technology

However, whether it is a plate-type or disc-type regulating mechanism, when the medium changes in the pressure reducing valve, it will hinder the medium. Therefore, the impurities in the medium are easy to cause deposition on the collision surface, thus affecting the long-term on-off performance.

[0004] In addition, most of the existing pressure reducing valves can only control one liquid inlet pipe and circulate one medium. For different media, multiple pressure reducing valves need to be added, and corresponding control mechanisms need to be installed. The control is difficult and the coordination accuracy is low. Low, the density of different media is different, it is easy to cause pressure fluctuations, so the mixed media is easy to cause detection errors, thus affecting the pressure limiting performance and subsequent pipeline transmission safety performance

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