Novel shock absorption expansion joint

Abstract

The invention discloses a novel shock absorption expansion joint. The novel shock absorption expansion joint comprises an internal shell, a corrugated pipe and two groups of lug flanges, wherein the corrugated pipe is arranged outside the internal shell, and the two groups of lug flanges are correspondingly arranged at the two ends of the corrugated pipe. The waveform of the corrugated pipe is inan omega shape; a shock absorption rod is arranged between the two groups of lug flanges; the shock absorption rod penetrates through connecting holes of the two groups of lug flanges and is connectedand fixed to the connecting holes through fastening connecting pieces; the fastening connecting pieces comprise spring washers, rubber washers and fastening bolts; the spring washers are pressed on the lug flanges, and the rubber washers are pressed on the spring washers; and the fastening bolts are pressed on the rubber washers. The corrugated pipe of the novel shock absorption expansion joint adopts a thin-wall multilayer condensation wave structure, and has good flexibility and a large compensation amount. The connecting flanges at both ends and lugs are of an integral structure, the lugsand a pull rod can bear the thrust generated by the deformation of the corrugated pipe, and the strength requirement of a product is met.

Description

technical field [0001] The invention relates to the technical field of machinery, and more specifically relates to a novel shock-absorbing expansion joint. Background technique [0002] Shock-absorbing expansion joints are mainly used for pump inlet and outlet with small displacement, high noise and frequent vibration, and are mainly used to reduce the vibration and noise of the pipeline system. At present, the traditional pump inlet and outlet generally use rubber compensators, and rubber compensators have fatal shortcomings such as unsanitary, easy to age, delamination and tearing, poor high pressure resistance, and short life, especially for heating and heating pipes. The advanced rubber compensator is gradually replaced by a new type of shock-absorbing expansion joint. [0003] The general-purpose corrugated compensator on the market is limited by the process and equipment conditions. The flexible corrugated pipe produced can absorb the axial, transverse and angular the...

AI Technical Summary

Problems solved by technology

At present, the traditional pump inlet and outlet generally use rubber compensators, and rubber compensators have fatal shortcomings such as unsanitary, easy to age, delamination and tearing, poor high pressure resistance, and short life, especially for heating and heating pipes. The rubber compensator is gradually replaced by a new type of shock-absorbing expansion joint

[0003] The general-purpose corrugated compensator on the market is limited by the process and equipment conditions. The flexible corrugated pipe produced can absorb the axial, transverse and angular thermal deformation of the pipeline, absorb vibration, reduce noise, and withstand high pressure and temperature. Because the flexible corrugated pipe The single-layer stainless steel used has a large axial stiffness, and the shock and noise reduction effect is not as good as that of the rubber patch

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