Pipe bursting and flow limiting valve

Abstract

The invention discloses a pipe bursting and flow limiting valve. The pipe bursting and flow limiting valve comprises a valve body, a flow guide body, a flow limiting body, supporting and moving structures, a sliding block, a sliding rod, a damping device and a tension trigger structure, wherein two ends of the valve body are provided with medium circulating pipes, the flow guide body, the flow limiting body, the supporting and moving structures, the sliding block and the sliding rod are arranged in the valve body, the flow guide body is arranged in a cavity formed by a valve body shell along a medium flowing direction, the flow limiting body and the flow guide body are oppositely arranged, a flow limiting passage is formed between a flow limiting surface of the flow limiting body and the inner wall of the valve body shell, the flow guide body and the flow limiting body are supported between the supporting and moving structures, the sliding block is connected with the flow guide body and the flow limiting body, the sliding rod is connected with the sliding block, the damping device which is used for moving the sliding block is connected with one end of the sliding rod, the tension trigger structure is connected with the other end of the sliding rod, and the damping device and the tension trigger structure are arranged outside the valve body. The pipe bursting and flow limiting valve disclosed by the invention is reasonable and simple in structural arrangement, flexible in motion and is particularly suitable for pipe bursting and flow limiting of a large-scale water pipeline in a no-power area.

Description

technical field [0001] The invention belongs to a control device on a medium pipeline, and in particular relates to a control valve capable of effectively controlling the flow rate of a medium in the pipeline after a pipeline explosion accident occurs. 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 problems, that is, when a pipe b...

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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