Unlock instant, AI-driven research and patent intelligence for your innovation.

Pressure reduction main valve capable of conveniently controlling gas outlet pressure

A pressure and gas technology, applied in the direction of safety valves, balance valves, valve devices, etc., can solve the problems of low pressure regulation accuracy, small pressure regulation range of pressure reducing valves, poor controllability of mechanical property changes, etc., and achieve simple structure and easy processing Create easy effects

Inactive Publication Date: 2018-03-06
刘海峰
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the above-mentioned existing decompression performance is greatly affected by the diaphragm or spring installed therein, and the presbyopia of the diaphragm, the processing accuracy of the spring and the yield deformation, the controllability of the mechanical properties of the two during use is poor. In this way, The traditional high-pressure gas pressure reducing valve has a small pressure regulating range, low pressure regulating precision, and poor stability in use. The present invention provides a pressure-reducing main valve for conveniently controlling the gas outlet pressure.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pressure reduction main valve capable of conveniently controlling gas outlet pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a pressure-reducing main valve for conveniently controlling the gas outlet pressure includes a valve body 1, and the valve body 1 is provided with an air inlet 2 and an air outlet 11, and the air inlet 2 and the air outlet 11 pass through the decompression part The decompression part includes a second valve core 10 and a valve seat arranged on the valve body 1, and the valve body 1 is also provided with a guide plate 9, and the guide plate 9 is provided with a guide hole. The second spool 10 includes a guide rod part, a decompression cone section and a piston part 3. The guide rod part is in clearance fit with the guide hole. A piston cavity is formed between them, and the second valve core 10 is also provided with a pressure equalizing flow channel 12 communicating with the air outlet 11 and the piston cavity, and a second spring 13 for applying elastic stress to the piston part 3 is also provided in the piston cavity. The body 1 is also pro...

Embodiment 2

[0027] The present embodiment is further limited on the basis of embodiment 1, as figure 1 As shown, in order to enable the first spool 7 and the second spool 10 to move smoothly, which is beneficial to the pressure adjustment response accuracy and response speed of the present invention, the decompression part and the fine-tuning valve seat are respectively provided with the second valve The core 10 and the first valve core 7 cooperate with the bearing bush 14 . Since the existing gas transportation process inevitably touches metal containers or metal pipes, the preferred material of the bearing bush 14 is a bearing alloy. In this way, when there are impurities in the gas, the preferred bearing bush 14 has good wear resistance.

[0028] In order to improve the flow controllability of the decompression part and the fine-tuning valve seat, the sealing surfaces on the decompression part and the fine-tuning valve seat are conical sealing surfaces.

[0029] In order to make the d...

Embodiment 3

[0032] This embodiment is further limited on the basis of the above embodiments, as figure 1 As shown, in order to further improve the controllability of the output pressure of the present invention, the air pressure in the upper chamber 111 is adjustable.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a pressure reduction main valve capable of conveniently controlling gas outlet pressure. The pressure reduction main valve comprises a valve body, wherein the valve body is provided with a gas inlet hole and a gas outlet hole, and the gas inlet hole is connected with the gas outlet hole through a pressure reducing part; the pressure reducing part comprises a second valve element and a valve seat, and a guide plate is further arranged on the valve body; a piston cavity is formed between a piston part and the valve body; a pressure equalizing runner is further arranged onthe second valve element; a second spring is further arranged in the piston cavity; a gas outlet pressure fine adjusting part is further arranged on the valve body; and the gas outlet pressure fine adjusting part comprises a first diaphragm and a second diaphragm, wherein a fine adjusting valve seat is further arranged between the first diaphragm and the second diaphragm, the fine adjusting valveseat comprises a fine adjusting seat and a first valve element, and a first spring is further arranged between the first valve element and the valve body. The pressure reduction main valve has the advantages that structure is simple, gas outlet pressure precision is high, and the pressure self-stabilizing performance is achieved.

Description

technical field [0001] The invention relates to the field of compressed gas decompression devices, in particular to a pressure-reducing main valve for conveniently controlling gas outlet pressure. 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 im...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/20
CPCF16K17/20
Inventor 刘海峰
Owner 刘海峰