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A pressure-reducing regulating valve with a variable flow-limiting buffer at the inlet

A technology of pressure-reducing regulating valve and inlet belt, which is applied in the field of pressure-reducing regulating valves, can solve problems such as large instantaneous overshoot of the outlet of pressure-reducing regulating valves, and achieve the effects of reducing production difficulty, improving sealing performance, and improving production and processing technology

Active Publication Date: 2021-07-20
XIAN AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem of large instantaneous overshoot at the outlet of the pressure reducing regulating valve when the gas pressure is rapidly loaded on the inlet of the pressure reducing regulating valve in the existing pressure reducing regulating valve, the present invention provides a buffer with variable flow limiting at the inlet The pressure reducing regulating valve has the advantage of no overshoot at startup

Method used

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  • A pressure-reducing regulating valve with a variable flow-limiting buffer at the inlet
  • A pressure-reducing regulating valve with a variable flow-limiting buffer at the inlet
  • A pressure-reducing regulating valve with a variable flow-limiting buffer at the inlet

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Embodiment Construction

[0026] like figure 1 As shown, the pressure reducing regulating valve of the present invention includes a valve body 1, an inlet nozzle 16, a buffer flow limiting assembly, an unloading assembly 10, a main valve core 2, a return spring 9, a sensitive piston 4, a safety pressure relief device, and an adjustment limiter. Position screw 6, main spring 7, spring jacket 11, lock nut 12.

[0027] The inlet nozzle 16 is arranged at the medium inlet upstream of the valve body 1 and connected with the valve body 1 .

[0028] like figure 2 As shown, the buffer flow limiting assembly is set in the inlet nozzle 16, including the buffer valve core 3 and the buffer spring 8, wherein the position of the buffer spring 8 is closer to the inlet end of the inlet nozzle 16; the buffer valve core 3 and the inlet nozzle 16 is also provided with a seal ring A 14 and a seal ring B15, the position of the seal ring A 14 is close to the buffer spring 8, and the position of the seal ring B15 is close ...

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Abstract

In order to solve the technical problem of large instantaneous overshoot at the outlet of the pressure reducing regulating valve when the gas pressure is rapidly loaded on the inlet of the pressure reducing regulating valve in the existing pressure reducing regulating valve, the present invention provides a buffer with variable flow limiting at the inlet The pressure reducing regulating valve, by setting the buffer flow limiting component in the inlet nozzle of the existing pressure reducing regulating valve, the buffer flow limiting component only works during the high pressure fast loading start process, when the pressure reducing regulating valve works smoothly The current-limiting component is fully open, without additional flow resistance, and the structure is highly scalable.

Description

technical field [0001] The invention relates to a decompression regulating valve with a variable current limiting buffer at the inlet, which has a high application range of the inlet pressure and is suitable for various aerospace propulsion systems such as constant-pressure pressurized conveyance, blow-off gas distribution, and the like for rocket ships and starships. Background technique [0002] The function of the decompression regulating valve is to decompress the high-pressure gas in the gas cylinder, and maintain the outlet pressure relatively stable under the condition of inlet pressure changes and outlet flow changes. It is often used in aerospace propulsion systems. In the existing decompression regulating valve, when the gas pressure is rapidly loaded on the inlet of the decompression regulating valve, the outlet of the decompression regulating valve will have a large instantaneous overshoot, which does not take advantage of the rapid stability of the regulating sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/30F16K17/04F16K17/164F16K27/02F16K47/04
CPCF16K17/048F16K17/164F16K17/30F16K27/0254F16K47/04
Inventor 董万峰李小明曾维亮谭屏王兴录
Owner XIAN AEROSPACE PROPULSION INST
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