Improvement device of high-density polyethylene double-wall corrugated pipe

Abstract

The invention relates to the field of corrugated pipes, in particular to an improvement device of a high-density polyethylene double-wall corrugated pipe. The improvement device comprises an outer pipe; multiple sets of extension sections are uniformly arranged on the outer pipe at equal intervals; the extension sections are symmetrically provided with two sets of slide blocks up and down; clamping blocks are arranged on the slide blocks, and are inserted in the extension sections; slide sleeves are inserted in the slide blocks; shaping rods are inserted in the slide sleeves; movable sleeves sleeve two ends of the shaping rods; stretching springs are welded between the inner walls of the movable sleeves and the tail ends of the shaping rods; the movable sleeves are inserted in connecting discs; left and right sets of connecting discs are symmetrically arranged; and sealing rings are mounted on the connecting discs through gluing. As the extension sections are connected with the slide blocks through the clamping blocks, and the slide blocks are axially limited through the shaping rods, the axial torsion of the extension sections is prevented.

Description

technical field [0001] The invention relates to the technical field of corrugated pipes, in particular to an improved device for high-density polyethylene double-wall corrugated pipes. Background technique [0002] Bellows mainly include metal bellows, corrugated expansion joints, corrugated heat exchange tubes, diaphragm diaphragm boxes and metal hoses. Metal bellows are mainly used to compensate pipeline thermal deformation, shock absorption, absorb pipeline settlement deformation, etc., and are widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other industries. [0003] Most of the existing bellows are single-wall bellows with low structural strength, and the existing bellows only have the function of bending and torsion cushioning, while the force effect of axial rotation is poor, and the bellows are easy to bear axial force. There is a phenomenon that the bellows breaks, and in the actual installation process, du...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing bellows are single-wall bellows with low structural strength, and the existing bellows only have the function of bending and torsion cushioning, while the force effect of axial rotation is poor, and the bellows are easy to bear axial force. There is a phenomenon that the bellows breaks, and in the actual installation process, due to the error in the installation and positioning, the bellows may be affected by the axial force

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