Polishing structure for inner surfaces of bent pipe pieces

Abstract

The invention discloses a grinding structure for the inner surface of a bent pipe, which comprises two semicircular spheres and a rotating shaft. There are grooves on the wall to cooperate with the protrusions, and a runner is installed on the outer peripheral wall of the sleeve. The main body is arranged on the sleeve, and a plurality of blades are arranged on both sides of the main body, and a blade is formed between two adjacent blades. The groove is equipped with rollers at the ends of the upper and lower ends of the semicircular sphere. Aiming at the defects in the prior art that the inner surface of the oil pipeline is not properly treated before leaving the factory, which leads to a sharp decrease in its service life, the inventor designed a special grinding and polishing structure for the inner surface of the oil pipeline bend, through two semicircular The adjustment of the sphere and the runner enables the working medium to fully cover all parts of the elbow, reducing the probability of local protrusions on the inner wall of the elbow, so as to achieve the purpose of improving the service life of the oil pipeline.

Description

technical field [0001] The invention relates to the field of inner surface treatment of bent pipes, in particular to a grinding structure for the inner surface of bent pipes. Background technique [0002] Pipeline transportation of petroleum has the advantages of high efficiency, low consumption, continuous transportation and high degree of automation. Pipeline transportation has become one of the important forms of current logistics and an indispensable "lifeline" for national economic and social development. Compared with that, the use of pipeline transportation has the following advantages: the safety guarantee rate of pipeline transportation is high, and green transportation can be realized. Oil and natural gas are explosive and volatile items. Into the atmosphere, it may cause an explosion as soon as it encounters Mars, and there are potential safety hazards. Most of the pipelines are buried underground and are less affected by adverse weather conditions and other exter...

AI Technical Summary

Problems solved by technology

Aiming at the defects in the prior art that the inner surface of the oil pipeline is not properly treated before leaving the factory, which leads to a sharp decrease in its service life, the inventor designed a special grinding and polishing structure for the inner surface of the oil pipeline bend, through two semicircular The adjustment of the sphere and the runner enables the working medium to fully cover all parts of the elbow, reducing the probability of local protrusions on the inner wall of the elbow, so as to achieve the purpose of improving the service life of the oil pipeline;

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