A gas pipeline pipe wall defect detection device

Abstract

The invention discloses a defect detecting device for a fuel gas pipe wall. The defect detecting device for the fuel gas pipe wall comprises a bottom base. The bottom base is provided with at least two support bases. Two sides of the bottom base in a length direction are provided with vertical plates. The lower ends of the vertical plates are fixedly provided with a moving mechanism which can drive the vertical plates to be moved along a horizontal direction. The opposite surfaces of the vertical plates are provided with oppositely inwards protruded rubber pads. The middle of the vertical plates is provided with a perforation. A first air inlet pipe is fixedly installed in the perforation. The outer end of the first air inlet pipe is connected with a first fan. The inner end of the first air inlet pipe is provided with an air outlet and a valve installed at the air outlet. The defect detecting device for the fuel gas pipe wall further comprises a detecting vehicle. The detecting vehicle is provided with a separating mechanism used for dividing a cavity of a fuel gas pipe to a first cavity and a second cavity. Two sides of the separating mechanism are provided with pressure sensors.The defect detecting device for the fuel gas pipe wall is capable of performing the air impermeability detection on the fuel gas pipe wall better, and looking up a defect position, and has the advantages of convenient use, high efficiency and high reliability.

Description

technical field [0001] The invention relates to the technical field of gas pipeline production and processing, in particular to a gas pipeline pipe wall defect detection device. Background technique [0002] Gas pipeline refers to the pipeline that transports natural gas. Gas pipelines are generally buried underground and used to transport gases such as gas. Gas is the general term for gaseous fuel, which can be burned to release heat for use by urban residents and industrial enterprises. There are many types of gas, mainly natural gas, artificial gas, liquefied petroleum gas and biogas. In the process of gas pipeline transportation, once the gas leaks, poisoning, fire or even explosion will occur, which will affect people's own safety and property safety, and even cause panic. If the fire or even the explosion occurs near the gas pipeline, it will also cause the entire line of the gas pipeline to catch fire, causing a large area explosion. Therefore, it is necessary to ...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to test the air tightness of the wall of the gas pipeline after the production of the gas pipeline is completed. However, after the production of the existing gas pipeline is completed, there is no tool for testing, which leads to certain safety hazards in the gas pipeline.

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