Travelling support arm used for flaw detecting and positioning of welded joint of petroleum pipeline

Abstract

The invention provides a walking support arm for flaw detection and positioning of welded joints of petroleum pipelines, which includes a hollow bolt, a hollow rod, a slide rod, a piston, a mounting plate, a universal ball wheel, a movable rod, a spring, a shell and a stud. The outer end is provided with a hollow rod, the outer end of the hollow rod is provided with a sliding rod, the inner end of the sliding rod is installed with a piston, and the piston is arranged inside the hollow rod. This design is convenient for extending or shortening the walking mechanism, and can For flaw detection of pipelines with different diameters, the inner end of the universal ball wheel is provided with a movable rod, the inner end of the movable rod is provided with a spring, the spring is installed inside the shell, and the inner end of the shell is provided with a stud, the The studs are set on the mounting plate. This design is easy to replace. It also has an automatic pop-up mechanism to ensure that the welding seam or obstacle can be crossed when encountering a welding seam or obstacle. The invention is easy to use, expands the scope of application, and improves work efficiency , high reliability.

Description

technical field [0001] The invention relates to a walking support arm for flaw detection and positioning of welded joints of petroleum pipelines, which 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 the welding seams of pipelines require higher welding quality. [0003] The length of the support arm on the existing oil pipeline welded joint flaw detection machine is fixed, so that the flaw detection can only be carried out on a pipe ...

AI Technical Summary

Problems solved by technology

[0003] The length of the support arm on the existing oil pipeline welded joint flaw detection machine is fixed, so that the flaw detection can only be carried out on a pipe with one diameter. When it is necessary to carry out flaw detection on a pipe with a different diameter, it is necessary to replace the support arm with a different length, and the scope of application is poor. , the walking wheels on the existing oil pipeline welding joint flaw detection machine are connected by welding. When the walking wheel needs to break down, it cannot be replaced and maintained, which affects the normal walking work. Or obstacles, can not pass, reduce work efficiency

Images