Pressure reducing valve and method thereof

Abstract

The present invention relates to a pressure reducing valve and its pressure reducing method. Said pressure-reducing valve includes the following components: valve body, valve core including valve flap and guide orifice sleeve and a pressure-regulating component. Said invention also provides the concrete structure of the above-mentioned every component, and provides the concrete steps of its pressure-regulating method.

Description

technical field [0001] The invention relates to a pressure reducing valve for a fluid delivery system, in particular to a pressure reducing valve and a pressure reducing method for a high pressure drop system. The invention also relates to a fluid delivery system comprising the pressure relief valve described above. Background technique [0002] The pressure reducing valve is to reduce the inlet pressure to a certain required outlet pressure by adjusting, so as to provide a certain pressure lower than the fluid pressure on the inlet side. The pressure reducing valve is installed on the pipeline leading to the fluid, regardless of the pressure of the fluid on the inlet side of the pressure reducing valve, it can maintain the fluid pressure on the outlet side at the required set pressure value. [0003] From the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area,...

AI Technical Summary

Problems solved by technology

[0026] 1. In order to keep the piston 112 balanced in the vertical direction, it is necessary to correctly design the diameter of the inner chamber so that the pressure in the upper annular chamber 123 and the lower annular chamber 120 that pushes the piston 112 upwards is the same as that in the central chamber 118 that pushes the piston 112 downwards. The pressure inside is kept balanced, which undoubtedly complicates the design of the pressure reducing valve

[0027] 2. The formation of three inner chambers with different diameters requires precise machining of the cylinder and piston, resulting in increased manufacturing costs

[0028] 3. In the decompression valve, the power of the piston 112 movement comes from the difference between the fluid pressure in the cylinder above the piston 112 and the fluid pressure in the central chamber below the piston 112, so the piston 112 cannot correspond to the decompression valve The fluid pressure at the second fluid flow channel on the outlet side, so that the outlet pressure of the pressure reducing valve cannot be guaranteed to be stable

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