Connecting mechanism based on petroleum pipeline welding joint crack detection positioning

Abstract

The invention provides a connection mechanism based on the flaw detection and positioning of welded joints of petroleum pipelines, comprising a front hexagonal connection end, a first connection, a second connection, a rear hexagonal connection, a ball head, a hollow threaded column, an oil storage tank, a hollow thread A rod, a pulley block, a sliding rod and a piston, the rear end of the front hexagonal connection end is provided with a connector 1, the rear end of the connector 1 is provided with a ball head, and the rear end of the ball head is provided with a connector 2, so The second rear end of the connecting piece is provided with a rear hexagonal connecting end. This design adopts a double rotating mechanism, which is more suitable for pipes with different bending angles. The outer end of the hollow threaded column is provided with an oil storage tank. A hollow rod is installed at the end, a pulley block is installed at the outer end of the hollow rod, and a piston is installed at the inner end of the hollow rod. This design can adjust the extension length of the pulley block. Sex is high.

Description

technical field [0001] The invention relates to a connection mechanism based on flaw detection and positioning of oil pipeline welded joints, and belongs to the technical field of pipeline flaw detection and positioning. Background technique [0002] Petroleum, one of the main objects of geological exploration, is a viscous, dark brown liquid known as the "blood of industry." There are oil reserves in parts of the upper crust. The main component is a mixture of various alkanes, naphthenes and aromatic hydrocarbons. Petroleum is mainly used as fuel oil and gasoline, and is also a raw material for many chemical industry products, such as solutions, fertilizers, pesticides and plastics. Petroleum is usually transported by pipelines, so pipe welding requires higher quality. [0003] The existing connecting mechanisms based on flaw detection and positioning of welded joints of oil pipelines are all single-rotation, which makes it impossible to enter some large-angle bent pipeli...

AI Technical Summary

Problems solved by technology

[0003] The existing connecting mechanisms based on flaw detection and positioning of welded joints of oil pipelines are all single-rotation, which makes it impossible to enter some large-angle bent pipelines, and the scope of use is poor. They are all in a fixed state, resulting in accurate flaw detection only for pipes with one diameter. When the diameter is too large, the device will shake when moving and reduce the stability.

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