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Valve

A valve and valve cavity technology, applied in the field of valves, can solve problems such as the angle deflection of sealing fittings and affect the sealing effect, and achieve the effects of improving stress concentration, improving sealing effect, reliability and service life

Active Publication Date: 2022-03-08
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a valve, which is used to at least solve the technical problem that the sealing fittings are prone to angle deflection and affect the sealing effect in a regulating valve used under deep and low temperature conditions.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0080] refer to Figure 7 with Figure 8 As shown, the fine-tuning assembly 40 includes a bellows 41 and a fixed seat 42. The two ends of the bellows 41 are respectively connected to the inner wall of the valve chamber 11 and the fixed seat 42. The fixed seat 42 is provided with an inner flow channel 421, the inlet 14 and the valve chamber. 11 communicates with the inner channel 421 through the inner pipe 411 of the bellows 41.

[0081] The fixing seat 42 can enhance the overall rigidity of the fine-tuning assembly 40. The bellows 41 can be fixedly connected to the inner wall of the valve cavity 11 by welding, and the bellows 41 can also be welded to an end surface of the fixing seat 42. way to achieve a fixed connection.

[0082] In a possible implementation manner, the outer diameter of the fixing seat 42 is larger than the outer diameter of the bellows 41 , and the inner diameter of the inner flow channel 421 is smaller than the smallest cross-sectional diameter of the in...

Embodiment 2

[0123] The difference between the second embodiment and the first embodiment is that the trimming assembly 40 includes a bellows 41, one end of the bellows 41 is fixedly connected to the inner wall of the valve cavity 11, the other end of the bellows 41 is in movable contact with the valve core assembly 30, and the inlet 14 communicates with the valve cavity 11 through the inner pipe 411 of the bellows 41.

[0124] In order to facilitate the formation of a sealing interface at the contact position between the trimming assembly 40 and the valve core assembly 30 , the end of the bellows 41 that is in movable contact with the valve core assembly 30 has a raised end 422 , and the raised end 422 faces away from the stem head 312 One side of the rod body 311 abuts against each other.

[0125]In this embodiment, the fixed seat 42 is omitted, and the inner pipe 411 of the bellows 41 communicates with the first flow channel 131 and the valve chamber 11, and the bellows 41 is directly a...

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Abstract

The invention provides a valve which comprises a valve body, a connecting piece, a valve element assembly and a fine adjustment assembly, the connecting piece is connected with the valve body, a valve cavity is formed between the connecting piece and the valve body, the connecting piece comprises a valve seat extending into the valve cavity, the outer side end of the valve body is provided with an inlet communicated with the valve cavity, and the valve element assembly is arranged in the valve cavity. An outlet communicated with the valve cavity is formed in the outer side end of the connecting piece, the fine adjustment assembly is connected with the inner wall of the valve cavity, and the fine adjustment assembly is communicated with the valve cavity and the inlet; the valve element assembly is movably connected with the fine adjustment assembly and the valve seat in an abutting mode, the valve element assembly is used for controlling connection or disconnection between the inlet and the valve cavity, and one end of the fine adjustment assembly is elastically connected with the valve element assembly in an abutting mode so as to be used for correcting deviation or inclination of the valve element assembly. The adjusting valve is used for solving the technical problem that in an adjusting valve used under the deep hypothermia working condition, a sealing matching piece is prone to angle deflection, and the sealing effect is affected.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a valve. Background technique [0002] The regulating valve is a device used to adjust the flow and pressure. With the advancement of the development of new-generation launch vehicles such as my country's launch vehicles, heavy-duty launches and manned moon landings, the performance and reliability of valves used in extreme working conditions have been put forward extremely. For high requirements, the advanced delivery system of launch vehicles is generally equipped with a regulating valve on the propellant passage, and the opening of the regulating valve is used to control the mixing ratio to optimize the propellant consumption and improve the carrying capacity. [0003] At present, considering that the working media of cryogenic valves are usually liquid hydrogen (-250°C) and liquid nitrogen (-196°C) in the delivery system of the launch vehicle under such extreme working conditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/30F16K1/42F16K1/48F16K1/32F16K27/02F02K9/58
CPCF16K17/30F16K1/42F16K1/48F16K1/32F16K27/02F02K9/58Y02E60/32
Inventor 郭飞程甘霖陈齐垚项冲黄毅杰张帆贾晓红王玉明
Owner TSINGHUA UNIV
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