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A pressure reducing regulating valve with safety pressure relief function

A technology of pressure reducing regulating valve and pressure relief valve, which is applied in the field of pressure reducing regulating valve, which can solve problems such as easy mis-opening and delayed opening, low matching of working pressure, and large overall volume of the valve, so as to achieve convenient debugging and popularization of structure The effect of strong scalability and high pressure matching

Active Publication Date: 2021-06-15
XIAN AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that in the prior art, when a constant pressure opening safety valve is separately set at the outlet of the pressure reducing regulating valve to realize the discharge of overpressure gas, the matching between the pressure relief pressure and the working pressure at the outlet of the pressure reducing regulating valve is not high, and it is easy to open by mistake and delayed opening. As well as the technical problem that the overall volume of the valve is large, the present invention provides a pressure reducing regulating valve with a safe pressure relief function, which has the characteristics of high matching between pressure relief and working pressure, no hysteresis in pressure relief, and compact structure

Method used

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  • A pressure reducing regulating valve with safety pressure relief function
  • A pressure reducing regulating valve with safety pressure relief function
  • A pressure reducing regulating valve with safety pressure relief function

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Embodiment Construction

[0038] 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.

[0039] The inlet nozzle 16 is arranged at the medium inlet upstream of the valve body 1 and connected with the valve body 1 .

[0040] 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 A seal ring A 14 and a seal ring B 15 are also arranged between 16, the position of the seal ring A 14 is close to the buffer spring 8, and the position of the seal ring B 15 is ...

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Abstract

In order to solve the problem that when the existing decompression regulating valve is separately provided with a constant pressure to open the safety valve at the outlet to realize the discharge of overpressure gas, there is a problem that the matching between the pressure relief pressure and the outlet working pressure of the decompression regulating valve is not high, and it is easy to open by mistake and delayed opening, and The technical problem of the overall volume of the valve is large. The present invention provides a pressure reducing regulating valve with a safety pressure relief function. A safety pressure relief component is built in the sensitive piston, and the safety pressure relief valve core in the safety pressure relief component moves synchronously with the sensitive piston. , no hysteresis in pressure relief, high system safety; the safety pressure relief component shares the same main spring with the main valve core, and the structure is more compact; and the safety pressure relief component adopts a reverse-opening non-metallic soft seal structure, and there is no leakage below the cracking pressure The sealing stability is better and the mechanical environment adaptability is higher.

Description

technical field [0001] The invention relates to a decompression regulating valve with a safety pressure relief function, which can timely and safely release pressure after overpressure, and is suitable for various aerospace propulsion systems such as constant pressure pressurized transportation, blowing and gas distribution, and the like for starships and rocket ships. 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, a separate constant pressure opening safety valve is installed at the valve outlet, so that the overpressured gas is discharged through the constant pressure opening safety valve, which has the following problems: [0003] 1) The opening pressure of the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/04F16K17/06F16K17/30
CPCF16K17/048F16K17/06F16K17/30
Inventor 董万峰李小明曾维亮谭屏王兴录
Owner XIAN AEROSPACE PROPULSION INST
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