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Multi-stage flue control valve, gas circuit system and valve structure

A technology of controlling valve and flux, applied in the direction of control valve, valve details, valve device, etc., can solve the problem of difficulty in maintaining the stability of gas circuit pressure, and achieve the effect of improving stability

Active Publication Date: 2021-04-27
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual application process, when the flow rate of the gas path is large, when the pressure at the inlet end of the gas path increases, the pressure of the gas path is difficult to maintain stability

Method used

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  • Multi-stage flue control valve, gas circuit system and valve structure
  • Multi-stage flue control valve, gas circuit system and valve structure
  • Multi-stage flue control valve, gas circuit system and valve structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] Such as image 3 and Figure 6 As shown, the present invention provides a valve structure, comprising: a valve body 10, which is provided with a fluid channel 11; a valve column 20, which is movably connected in the fluid channel 11; the valve column 20 is provided with an annular protrusion 30, and the valve column The inner wall of the body 10 is provided with an abutting structure 40 that matches the annular protrusion 30, and the valve column 20 can move relative to the valve body 10 until the annular protrusion 30 abuts against the abutting structure 40, so that the fluid passage 11 is closed. . A groove 31 is formed on the end surface of the spool 20 , and an annular protrusion 30 is formed on an edge of the groove 31 .

[0110] The valve structure cooperates with the abutting structure 40 on the valve body 10 through the annular protrusion 30 to realize the sealing between the valve column 20 and the valve body 10 and the disconnection of the fluid channel 11 ....

Embodiment 2

[0134] Such as image 3 and Figure 6As shown, the present invention provides a valve structure, comprising: a valve body 10, which is provided with a fluid channel 11; a valve column 20, which is movably connected in the fluid channel 11; With the first matching structure 400, the valve column 20 can move relative to the valve body 10 to abut against the first matching structure 400, so that the fluid channel 11 is closed; the fluid channel 11 is provided with a pore structure column 60, and the pore structure column The body 60 is located on a side of the first matching structure 400 away from the spool 20 .

[0135] The airflow usually contains solid particles, and the solid particles carried by the high-speed airflow will cause relatively strong damage to the wall. In the valve structure provided by the present invention, the pore structure cylinder 60 can block solid particles on the one hand, and on the other hand, high-speed gas flows through the complex pores in the ...

Embodiment 3

[0144] Such as image 3 , Figure 6 and Figure 7 As shown, the present invention provides a valve structure, comprising: a valve body 10, which is provided with a fluid channel 11; a valve column 20, which is movably connected in the fluid channel 11; the valve column 20 is provided with an annular protrusion 30, and the valve column The inner wall of the body 10 is provided with an abutting structure 40 that matches the annular protrusion 30, and the valve column 20 can move relative to the valve body 10 until the annular protrusion 30 abuts against the abutting structure 40, so that the fluid passage 11 is closed. . A groove 31 is formed on the end surface of the spool 20 , and an annular protrusion 30 is formed on an edge of the groove 31 . A pore structure column 60 is disposed in the fluid channel 11 , and the pore structure column 60 is located on a side of the abutting structure 40 away from the valve column 20 .

[0145] The valve structure has the following advan...

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Abstract

The invention provides a multi-stage flue control valve, a gas circuit system and a valve structure. The multi-stage flue control valve comprises an outer valve body and multi-stage valve elements, wherein the outer valve body is provided with a main channel; a plurality of valve structures are arranged in the multi-stage valve elements in parallel; the valve structure comprises a valve body, a valve column and a valve column spring, and the valve body is provided with a runner channel communicating with the main channel; the valve column is movably connected in the runner channel, and the valve column spring is connected to the valve column, so that the valve column is a trend of moving to a first matching structure on the valve body to match to close the runner channel; each valve structure has a frits opening pressure, and the valve column can be separated from the first matching structure under the action of the first opening pressure, so that two ends of the runner channel communicate; the plurality of valve structures comprise multi-stage first opening pressures. According to the invention, the technical problem that it is hard to maintain the pressure of a constant pressure control valve in the prior art stable when the pressure at an inlet of the gas circuit is increased under a condition that the flow of the gas circuit is large.

Description

technical field [0001] The invention relates to the technical field of gas path control valves, in particular to a multistage flux control valve, gas path system and valve structure. Background technique [0002] Gas flooding technology is an advantageous technology in the late stage of water flooding development and the development of low-permeability reservoirs; in the process of gas flooding, it is necessary to control the connection and disconnection of gas passages. basically the same. The constant pressure control valve is usually a spring type, and the constant pressure value is determined by adjusting the stretching distance of the spring. The spring supports the valve column. When the fluid is higher than the pressure, the valve plate is partially opened, and the fluid flows out through the control valve. The pressure difference between the fluid pressure and the spring pressure maintains a stable pressure difference, realizing the constant pressure control of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/02F16K15/08F16K47/02
CPCF16K15/025F16K15/08F16K47/02
Inventor 陈兴隆张成明林海波邵立新杨永智
Owner PETROCHINA CO LTD
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