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Natural gas pressure reduction mechanism

A decompression mechanism, natural gas technology, applied in mechanical equipment, engine components, safety valves, etc., to achieve the effects of good controllability, simple structure, and low operation and maintenance costs

Inactive Publication Date: 2018-03-06
刘海峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the further optimization of the spool structure of the gas pressure reducing valve is particularly important, the present invention provides a natural gas pressure reducing mechanism

Method used

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  • Natural gas pressure reduction mechanism

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a natural gas decompression mechanism includes a valve body 6, and the valve body 6 is provided with an inlet passage 9, an outlet passage 10, a discharge hole 1 and a feedback passage 5, and the inlet passage 9 and the outlet passage 10 is provided with a pressure-reducing part, and a pressure-regulating part is provided between the relief hole 1 and the feedback channel 5. The inlet and outlet ports of the feedback channel 5 communicate with the inlet channel 9 and the outlet channel 10 respectively. The valve body 6 is also threaded with a pressure regulating screw 11, one end of the pressure regulating screw 11 extends into the feedback channel 5, and the end of the end of the pressure regulating screw 11 protruding into the feedback channel 5 is tapered, and the feedback channel 5 also There is a pressure regulating seat 4 that fits in a gap with the feedback channel 5, the pressure regulating seat 4 is hollow, the end is provided with a ...

Embodiment 2

[0028] The present embodiment is further limited on the basis of embodiment 1, as figure 1 As shown, in order to reduce the volume of the present invention, facilitate the processing of the present invention, reduce the number of sealing surfaces on the valve body 6, the air outlet passage 10, the intake passage 9, the feedback passage 5 and the discharge hole 1 are all formed by It consists of at least one straight hole segment. The above structure is convenient to set the valve body 6 as a whole, and the air inlet channel 9, the air outlet channel 10, the feedback channel 5 and the discharge hole 1 are processed by drilling, and the above air inlet channel 9, the air outlet channel 10, and the feedback channel 5 And the opening end of the discharge hole 1 can be sealed by the structural form of the pipe thread screw and the sealing gasket 3 .

[0029] In order to increase the feedback response speed of the pressure-reducing valve core 7 and buffer the collision between the ...

Embodiment 3

[0031] The present embodiment is further limited on the basis of embodiment 1, as figure 1 As shown, in order to prevent the pressure regulating screw 11 from being rotated artificially and affect the outlet pressure of the present invention, the pressure regulating screw 11 is also provided with elastic members 12 whose two ends respectively act on the pressure regulating screw 11 and the valve body 6 .

[0032] Since the spring can be deformed in a larger range than other elastic members 12, in order to make the elastic member 12 have an active force on the pressure adjusting screw 11 during the pressure adjustment process of the pressure adjusting screw 11, the elastic member 12 is compressed. spring.

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Abstract

The invention discloses a natural gas decompression mechanism, which comprises a valve body. The valve body is provided with an air inlet channel, an air outlet channel, a discharge hole and a feedback channel. There is a pressure regulating part between the hole and the feedback channel, a pressure regulating screw is threaded on the valve body, and a pressure regulating seat is arranged in the feedback channel; the pressure reducing part includes a pressure reducing valve core and a pressure reducing valve seat, and the pressure reducing valve seat is The outer side is provided with a cylindrical structure with external threads, and the pressure-reducing valve seat is threadedly connected in the intake passage, the pressure-reducing valve core is located in the air-outlet passage, and the pressure-reducing valve seat and the pressure-reducing valve core are respectively provided with conical cross-section The grooves and protrusions, the protrusions are facing the grooves, and a diaphragm is also arranged on the pressure reducing valve core, the side wall of the diaphragm blocks the air outlet channel and forms a feedback cavity on the air outlet channel. The decompression effect of the present invention is good in controllability, low in operation and maintenance costs, convenient for troubleshooting, and can avoid natural gas overflow during the working process of the present invention.

Description

technical field [0001] The invention relates to the field of compressed gas decompression devices, in particular to a natural gas decompression mechanism. Background technique [0002] As natural gas is used more and more widely, various forms of pressure reducing valves emerge in endlessly. Further optimization of the structure of natural gas pressure reducing valves will further promote the use of natural gas. Taking environmental awareness as an example, the use of natural gas as fuel for vehicle engines can greatly reduce vehicle exhaust pollution. However, in order to improve the single inflation stroke of vehicles fueled by natural gas, high-pressure gas cylinders are installed on vehicles to accommodate natural gas. The pressure of the natural gas introduced into the cylinder is generally several thousand pascals. In this way, the pressure reducing valve for reducing the pressure of high-pressure natural gas is particularly important. In terms of power and even drivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/06
CPCF16K17/06
Inventor 刘海峰
Owner 刘海峰