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High-pressure reducing valve

A pressure reducing valve and high pressure technology, applied in the field of high pressure pressure reducing valve, can solve the problems of pressure regulating accuracy and pressure regulating reaction speed of the pressure reducing valve, and achieve the effect of improving the throttling and pressure reducing effect.

Active Publication Date: 2015-04-08
四川长仪油气集输设备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Undoubtedly, when the elastic coefficient (k) of the pressure regulating spring increases, the pressure regulating accuracy and pressure regulating response speed of the pressure reducing valve will drop sharply.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment one: The high-pressure decompression valve proposed by the present invention is used independently as a single decompression valve.

[0041] A high-pressure pressure relief valve proposed by the present invention is mainly composed of a valve body 10, a lower valve cover 15 connected and installed on the lower end of the valve body 10 with a group of bolts 16, a middle valve body 29 installed on the upper end of the valve body 10, and an upper valve body. The valve cover 4 , the pressure regulating spring 3 fitted in the upper valve cover 4 , the lower membrane assembly 22 connected to the valve stem 30 , the middle membrane assembly 7 , and the upper membrane assembly 31 are composed. The middle valve body 29 is assembled between the valve body 10 and the upper valve cover 4, and the lower membrane assembly 22 is installed between the valve body 10 and the lower valve cover 15 to be divided into the lower membrane lower cavity 19 and the lower membrane uppe...

Embodiment 2

[0042] Embodiment two: The high-pressure reducing valve proposed by the present invention is used as a command valve and matched with the main valve on the gas transmission main pipe to form a pressure regulator to perform pressure regulating operations.

[0043]It is connected and installed with the main valve in the following way to form a pressure regulator: first, connect and install the high-pressure air pipe 11, low-pressure air pipe 36, After pressing the signal pipe 20, connect the other end of the high-pressure air pipe 11 to the main valve control air chamber 42 on the main valve body 44, and connect the other end of the low-pressure air pipe 36 to the main valve outlet flange 51 to form a main valve. Valve control air chamber 42, through high-pressure air pipe 11 to high-pressure relief valve, and then through low-pressure air pipe 36, is transported back to the "pressure-regulating air flow channel" of main valve outlet flange 51. Then connect the other end of th...

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Abstract

The invention discloses a high-pressure reducing valve which is structurally characterized in that a middle valve body is additionally arranged between a valve body and an upper valve cover; a 'three membrane pressure regulating and reducing structure', which comprises a middle membrane component, an upper membrane assembling piece and a lower membrane assembling piece, is assembled between the valve body and the middle valve body; pressured air medium is guided into an upper cavity of an upper membrane to form an air spring and perform pressure regulation and reduction on the upper membrane component together with a pressure adjusting spring, so that pressure regulation and reduction are performed on high-pressure air medium without increasing the elastic coefficient (k) of the pressure adjusting spring. The high-pressure reducing valve has the remarkable advantages of simple structure, low manufacturing cost, convenience in assembling and operation, safe and stable operation, high pressure regulating accuracy, high reaction speed of pressure regulation and long service life, is particularly suitable for being mounted and used in a gas line network system and a transmission and distribution station with high working pressure, large regulating differential pressure and wide range, can serve as a reducing valve used separately, and also serve as a conducting valve to form a pressure regulator together with a main valve, and has excellent application prospect in the gas transmission industry.

Description

technical field [0001] The invention relates to a decompression valve device, which belongs to the technical field of pressure regulation and control equipment for a gas transmission pipeline network, in particular to a high-pressure decompression valve, which can be used independently as a single decompression valve, or as a command valve and a transmission valve. The main valve on the main gas pipeline is matched and connected to form a pressure regulator. Background technique [0002] With the rapid development of the oil and natural gas industry, the construction process of my country's gas transmission pipeline network project and transmission and distribution stations has been vigorously promoted. , generally the natural gas is boosted to carry out high-pressure transmission operations, and then the pressure regulating equipment in various transmission and distribution stations depressurizes step by step, and the high-pressure natural gas is steadily reduced to the set...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/18
Inventor 王元清王元义
Owner 四川长仪油气集输设备股份有限公司