Intelligent secure cut-off mechanism assembly

A safety cut-off and assembly technology, applied in safety valves, mechanical equipment, engine components, etc., can solve problems that affect the normal life and production of users, do not have remote signaling functions, and cannot arrive immediately, etc., to achieve pressure difference reduction, The effect of increasing the membrane cavity and improving the control precision

Inactive Publication Date: 2006-12-27
DAFENG GAS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, foreign safety cut-off valve safety cut-off mechanism assembly also has defects such as large minimum pressure difference between overpressure and pressure loss, low precision, and lack of remote signaling function.
If there is no remote signaling device, once the pressure regulating equipment behind the safety shut-off valve fails, the shut-off mechanism assembly will act and the gas source in front of the safety shut-off valve will be cut off, and the management personnel will not be able to rush to the scene immediately to troubleshoot the fault, resulting in long-term absence of users. Gas use, affecting the normal life and production of users

Method used

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Embodiment Construction

[0017] specific implementation plan

[0018] The intelligent safety cut-off mechanism assembly includes a membrane chamber assembly, a lever transmission assembly, a command valve body (2) and an adjustment assembly (1). The membrane cavity assembly is screwed on the command valve body (2) through threads, the lever assembly (3) is connected with the command valve body (2) through various small shafts, and the adjustment assembly (1) is screwed on the command valve body (2) through threads ), the movement direction of the adjustment assembly (1) is parallel to the flow direction of the cut-off valve. The membrane cavity assembly is composed of the upper membrane body (5), the lower membrane body (7), the tray (6), and the membrane (8), and the upper membrane body (5), the lower membrane body (7), and the membrane (8) are connected by bolts to form a Membrane cavity, cavity diameter 185-190 mm. The film is made of nitrile rubber with no skeleton and a Shore hardness of 40-45A...

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PUM

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Abstract

The invention relates to an intelligent safety cutoff device, belonging to the controller of safety cutoff valve, wherein it can cutoff the operation of device to control the switch of cutoff valve, when the user pressure is increased or decreased over the user application pressure range. The invention adds one spring positioning sleeve based on present safety cutoff valve controller, to separate the inner space; the spring positioning sleeve is arranged with non-pressure spring and over-pressure spring; the non-pressure control element and the over-pressure control element both function the transmission rod; the transmission rod is added with one group of non-pressure impact block; the non-pressure impact block and the over-pressure impact block are independently mounted at two sides of rolling bearing; the remote signal device is mounted at the face of control valve body, near the film chamber, to form 45-50 degrees with the transmission axle. The invention has high accuracy and less pressure difference.

Description

technical field [0001] The invention relates to a command device for a safety cut-off valve. Its function is to activate the safety cut-off mechanism assembly to control the opening and closing of the valve port of the cut-off valve when the user's air pressure drops or rises beyond its operating pressure range. Background technique [0002] At present, the safety shut-off mechanism assemblies of safety cut-off valves in China can achieve the purpose of overpressure control, but there is no pressure loss control function. For the safety cut-off mechanism assembly without pressure loss control function, once a certain equipment behind the cut-off valve fails or the pipeline ruptures, causing the pressure behind the cut-off valve to suddenly drop, the safety cut-off mechanism assembly will not be able to make a control response and immediately close the cut-off valve. Then the gas in front of the shut-off valve flows continuously to the pipeline behind the shut-off valve, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/32
Inventor 徐新国智恒勤袁玉英
Owner DAFENG GAS EQUIP
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