A mechanical electromagnetic gas emergency cut-off valve

An electromagnetic shut-off valve technology, applied to mechanical equipment, valve details, valve devices, etc., can solve problems such as easy to close by mistake, unable to effectively ensure the safety of gas use, and large changes in pipeline pressure, and achieve low driving voltage, open and close The reset operation is simple and fast, and the structure is safe and reliable.

Active Publication Date: 2021-03-19
HEBEI QINHAN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, especially in civil gas main pipelines or industrial gas pipelines, the pipeline pressure changes greatly. When the negative pressure in the pipeline is large, the current shut-off valve is easy to close by mistake, which cannot effectively ensure the safety of gas use.

Method used

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  • A mechanical electromagnetic gas emergency cut-off valve
  • A mechanical electromagnetic gas emergency cut-off valve
  • A mechanical electromagnetic gas emergency cut-off valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] see Figure 1-3 As shown in , a mechanical electromagnetic gas emergency shut-off valve includes a valve body 17, an upper valve cover 12, a lower valve cover 18, a valve core, a disc 28 installed in the valve body 17, a return spring I13, and an actuator 6. The upper valve cover 12 and the lower valve cover 18 are hermetically installed on the upper and lower ends of the valve body 17 . A casing is fixedly installed on the top of the valve body 17, that is, above the upper valve cover 12. The casing includes the casing 7 and the casing cover 2, and the casing 7 and the casing cover 2 are sealed and connected together by a square gasket 1. A nameplate 8 may also be provided on the outer side of the housing cover 2 .

[0028] The main improvement of the present invention lies in the structure of the spool, which adopts a mechanical linkage cam mechanism. The spool includes a cam 3, a hook 4, a connecting rod 9 and a mandrel 10, and is installed in the housing. The mid...

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PUM

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Abstract

The invention discloses a mechanical electromagnetic type fuel gas emergency shut-off valve which comprises a valve body, a shell, a valve deck, a valve element, a valve clack, reset springs and an actuating mechanism, wherein the valve element comprises a mandrel, a connecting rod, a cam and a pothook; the lower part of the mandrel is connected with the valve clack; the middle of the mandrel is mounted on the valve body in a sliding and sealing manner; the upper part of the mandrel stretches into the shell to be hinged to the lower end of the connecting rod; the cam and the pothook are rotatably mounted on the shell; one end of the cam is hinged to the upper end of the connecting rod, and a lug matched with the pothook is arranged at the other end of the cam; the lower part of the pothook abuts against the actuating mechanism, and the upper end of the pothook is hooked on the lug of the cam through the reset spring II. The mechanical electromagnetic type fuel gas emergency shut-off valve can be rapidly started under any circumstance, can resist against complex pipeline pressure, and is simple in structure, safe and reliable, unlikely to damage, long in service life, and applicable to popularization and application.

Description

technical field [0001] The invention relates to a gas alarm system, in particular to a gas cut-off valve, in particular to a mechanical electromagnetic gas emergency cut-off valve. Background technique [0002] With the gradual liberalization of urban gas utilities and the rapid development of the gas industry, natural gas, liquefied petroleum gas, coal gas and other piped gas have been rapidly popularized in my country. The use of gas brings great convenience to people's life, effectively improves people's quality of life and reduces environmental pollution. But at the same time, it has also brought many disasters to people's lives. Safety accidents such as poisoning, explosions, and fires caused by gas leakage have occurred from time to time, which have brought huge losses to people's lives and property, and have become the most concerned focus of the gas industry. and focus. [0003] The gas emergency shut-off valve is a valve installed at the outlet of the gas storage ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/524
CPCF16K31/52408
Inventor 张洋
Owner HEBEI QINHAN ELECTRONICS TECH CO LTD
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