Shear type pipe explosion flow-limiting valve

Abstract

The invention belongs to a control device on a medium pipeline and particularly relates to a shear type pipe explosion flow-limiting valve which can effectively control the flow speed of the medium in the pipeline in the case of explosion of the pipeline. The shear type pipe explosion flow-limiting valve comprises a valve body which is provided with medium flowing pipes at the two ends; a flow guider, a flow limiter, a supporting and shifting structure, a slider and a sliding rod are arranged in the valve body; the shear type pipe explosion flow-limiting valve further comprises a damping piece arranged outside the valve body for damping the movement of the slider and a shear trigger structure which is arranged on a shell of the valve body and is connected with the slider. The shear type pipe explosion flow-limiting valve is reasonable and simple in structural arrangement and flexible in motion, and is particularly suitable for limiting the flow of large-scale water pipelines in case of explosion in places without power supply.

Description

technical field [0001] The present invention belongs to a control device on a medium pipeline, and in particular relates to a shearing type burst flow limiting valve that can effectively control the flow rate of the medium in the pipeline after a burst accident occurs in the pipeline. Background technique [0002] Long-distance medium output pipelines, such as large-scale water supply pipelines, are laid along geographically long distances. The existing pipeline control design adopts conventional control valves such as valve opening and closing. When accidents such as pipe rupture and pipe burst occur on the pipeline, the medium in the pipe will be ejected from the rupture and burst quickly, causing the pipe flooding accident; at the same time, the pressure in the pipe changes sharply, which will cause extreme damage in the pipe. Ground impact, for water pipelines, will produce water hammer impact, affecting the safety of other parts of the pipeline. How to solve the above...

AI Technical Summary

Problems solved by technology

When accidents such as pipe rupture and pipe burst occur on the pipeline, the medium in the pipe will be ejected from the rupture and burst quickly, causing the pipe flooding accident; at the same time, the pressure in the pipe changes sharply, which will cause extreme damage in the pipe. Ground impact, for water pipelines, will produce water hammer impact, affecting the safety of other parts of the pipeline

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