Ultrahigh molecular weight polyethylene composite pipe connector

Abstract

The invention discloses an ultrahigh molecular weight polyethylene composite pipe connector, and belongs to the technical field of pipeline connectors. The connector comprises a shrinkage sleeve, a locking nut, a positioning steel sleeve, a sealing ring groove, a sealing ring and a bush; the positioning steel sleeve is placed at the central position of butted faces of two pipe bodies; the annular shrinkage sleeve is arranged at one end of the positioning steel sleeve; the locking nut is arranged outside the positioning steel sleeve, the bush and the shrinkage sleeve; the bush is arranged in an annular cavity formed by the fitting surface of a steel strip and the positioning steel sleeve and the fitting surface of the shrinkage sleeve and the locking nut; and the steel strip wraps the outer end faces of the bush and the positioning steel sleeve and is fitted with the inside surface of the locking nut. The inside surface of the positioning steel sleeve is provided with an anticorrosive layer. The inside surface of the locking nut is step-shaped. The bearing capacity of the connector can reach 16MPa, bearing of pressure of 8MPa is kept, the cost can be reduced by 10 percent, and the work efficiency can be improved by 3 to 5 times; and the ultrahigh molecular weight polyethylene composite pipe connector ensures the safety and the reliability of pipeline operation and has long service life.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene composite pipe connector, which belongs to the technical field of pipe connectors. Background technique [0002] UHMWPE composite pipes are widely used in coal, chemical, steel and building materials industries. In today's life, drainage pipe networks such as industrial wastewater, urban sewage, and domestic water can be seen everywhere. In order to ensure safe and reliable operation of the conveying medium pipeline and the drainage pipe network, and a long service life, the pipeline connector is a key component of the conveying medium pipeline and the drainage pipe network. Pipelines for conveying medium and drainage pipe network leak due to component damage during use, mainly the pipe connectors, which in a certain sense determine the cost and maintenance cost of conveying medium pipelines and drainpipe network. [0003] In the prior art, there are a variety of pipeline connection...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are a variety of pipeline connection methods, which can be roughly divided into two types: one is heating welding (or welding), which has better reliability, but requires special equipment, electricity or fuel, and difficult construction Large, and cannot be used in flammable and explosive environments such as coal mines; the other is flange connection. Although flange connection is constructed at room temperature and saves energy, it has the following defects:

[0004] 1. It is difficult to adjust the alignment of the flange screw holes on both sides during installation;

[0005] 2. The number of bolts is large, and the radial bolts need to be tightened synchronously when tightening the bolts, which is inconvenient to operate;

[0006] 3. Due to long-term operation of the pipeline and changes in external environmental factors, a part of the twisting force will be applied to the flange connection, resulting in misalignment of the sealing surfaces and failure of the seal. Causing bolts to loosen, resulting in pipe leaks

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