Passive fast automatic shut-off valve inducting shock wave

Abstract

The invention discloses a passive quick automatic stop valve capable of sensing impact waves. The passive quick automatic stop valve comprises a valve body, and a valve plate connected with the valve body in a rotatable manner, wherein an impact wave triggering device which can limit the valve plate to one side of the valve body and enable the valve body to be in a normally open state is arranged in the valve body; the impact wave triggering device is separated from the valve plate under the pressure action of the impact waves, and the valve plate rotates to a valve opening of the valve body to enable the valve body to be in a closed state. The passive quick automatic stop valve capable of sensing the impact waves can automatically sense the impact waves without a specially designed electrical automatic control system under a passive (nonelectric or air-free) condition, and collect the acting force generated by the impact waves; under the action of the acting force, the valve plate is released to close the valve, so that emergency quick leakage stoppage for a pipeline or a storage tank is realized.

Description

technical field [0001] The invention relates to a valve, in particular to a passive fast automatic cut-off valve which induces shock waves. Background technique [0002] In recent years, various hazardous chemical storage tanks, industrial flammable and explosive medium pipelines, industrial and urban gas pipelines and other combustion and explosion accidents have occurred frequently, causing huge property losses and casualties. Among these accidents, what deserves our attention is that due to the failure to contain the first accident quickly and effectively, the secondary accidents that are rapidly derived are often the direct cause of huge losses. [0003] At present, the emergency disposal equipment and facilities for storage tanks (pipelines) after combustion and explosion accidents include: various plugging valves such as medium-diameter pipe pressure plugging valve (CN205118563U), a safety plugging valve (CN201520500052.5), Negative pressure balance plugging valve (CN...

AI Technical Summary

Problems solved by technology

All these emergency plugging valves require manual intervention, that is, they need to be directly operated by people to achieve plugging.

After chemical accidents, such as combustion and explosion accidents, people are often unable to close the valve because people cannot get close to the explosion site. For the valve closing system using active automatic control, because the electricity and gas at the accident site are interrupted or invalid , so that these cut-off valves cannot operate normally, and then the flammable and explosive medium flows out quickly, which may cause a large area of ​​combustion or explosion.

The disadvantages of this manual intervention plugging method are as follows: first, the human response procedure is slow; second, the requirements for operators are high, and in emergency situations, operators need to have both professional ability and familiarity with the accident scene; third, it is necessary to provide The operator wears special protective equipment, which is a waste of time again; fourth, there is a danger of the operator sacrificing at any time

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