Steel belt self-locking type flange pipe connector used for connecting compound pipes

Abstract

The invention discloses a steel belt self-locking type flange pipe connector used for connecting compound pipes and belongs to the technical field of the pipe connector. The steel belt self-locking type flange pipe connector comprises a shrinking sleeve, a flange 4, a sleeve liner, a steel belt and a filling layer, wherein the flange 4 is composed of an upper flange 5 and a lower flange 6; the shrinking sleeve is arranged between the steel belt and the sleeve liner; a ladder-shaped inner hole is formed on one side, which is close to a pipe body, of the lower flange 6; the sleeve liner is positioned in a hollow cavity; the steel belt is tangent with the outer side of the upper flange 5 and an end of the steel belt is matched with the inner wall of the inner hole, thereby forming the hollow cavity; the filling layer is positioned in the hollow cavity which is encircled by the steel belt, the upper flange 5 and the inner wall of the inner hole; the steel belt is positioned between the sleeve liner and the inner hole; an inclined angle of 30 degrees is formed between the slope of the ladder-shaped inner hole and the axial line of the pipe body. The steel belt self-locking type flange pipe connector can be used for reducing 10% of cost. The loading capacity is above dozens of MPa and the tensile yield strength is above 10MPa. The steel belt self-locking type flange pipe connector used for connecting compound pipes is capable of being used for efficiently promoting the tensile yield strength of the pipes and is reliable in connection and long in service life.

Description

technical field [0001] The invention relates to a steel strip self-locking flange pipe joint for composite pipe connection, belongs to the technical field of pipe joints, and is an ultra-high molecular weight polyethylene composite pipe joint. Background technique [0002] In the prior art, one of the pipeline connection methods is flange connection. The flange connection has the advantages of construction at room temperature and energy saving, but has the disadvantages of poor tensile yield strength and low pressure bearing capacity. With the long-term operation of the pipeline and the change of external environmental factors, a part of the twisting force will be applied to the flange connection, resulting in misalignment of the sealing surfaces and seal failure. Causing the bolts to loosen, causing the pipes to leak. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies in the existing pipe joint technology, and provide a...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, one of the pipeline connection methods is flange connection, which has the advantages of construction at room temperature and energy saving, but has the disadvantages of poor tensile yield strength and low pressure bearing capacity

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

Images