Adjustable ground lining pipeline union connecting joint

Abstract

The invention discloses an adjustable ground lining pipeline union connecting joint which comprises a male head, a female head, a union and a pipe column. A right port of the male head corresponds toa left port of the pipe column. A left port of the union is hung to the outer wall of the male head in a sleeving manner. A pipe column external thread is formed on the outer wall of the pipe column.A female head internal thread is formed on the inner wall of the female head. A female head external thread is formed on the outer wall of the female head. A union internal thread is formed on the inner wall of the union. The union is in screw thread connection with the female head external thread of the female head through the union internal thread of the union. The female head is in screw threadconnection with the pipe column external thread of the pipe column through the female head internal thread of the female head. According to the adjustable ground lining pipeline union connecting joint, the position of the female head on the pipe column is adjusted so as to facilitate replacement of a certain pipeline, ground lining pipeline maintenance can be conveniently carried out, the adjustable union connecting joint is high in adaptability and compact in structure, and pipeline replacement operation is convenient.

Description

technical field [0001] The invention relates to the technical field of union joints of ground lined pipelines in petroleum mechanical engineering, in particular to an adjustable ground lined lined union joint. Background technique [0002] The ground-lined pipeline union joint is a connecting device that can facilitate the replacement of pipelines. As a device for connecting two pipelines, a certain pipeline can be replaced without changing the length of the pipeline, which is convenient for maintenance. In order to solve the problems of perforation and scaling caused by corrosion and abrasion of ground pipes, ultra-high molecular weight polyethylene with the characteristics of wear resistance, corrosion resistance, scale resistance and self-lubrication is used as the inner lining layer inside the pipeline. At present, the fixed union connection joint of the ground lining pipeline makes the male head and the female head directly clamp the gasket under the action of the union...

AI Technical Summary

Problems solved by technology

At present, the fixed union connection joint of the ground lining pipeline makes the male head and the female head directly clamp the gasket under the action of the union tightening force. This connection method is easy to operate, but when replacing the pipeline, it is necessary to use this fixed connection The joint connects the two pipelines, and the length of the pipeline needs to be changed, thereby increasing the cost and causing waste

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