High-temperature-resistant corrugated expansion joint

Abstract

The invention discloses a high-temperature-resistant corrugated expansion joint, which comprises a left flange, a corrugated pipe, a right flange, a left guide cylinder and a right guide cylinder, wherein a thermal insulation structure is arranged in a cavity formed by the outer walls of the left guide cylinder and the right guide cylinder, and the inner wall of the corrugated pipe; the thermal insulation structure is divided into three layers consisting of a first thermal insulation layer, a second thermal insulation layer and a third thermal insulation layer from interior to exterior; the first thermal insulation layer is a tube sleeve type structure provided with flanges on two ends, and the left end and the right end of the first thermal insulation layer respectively sleeve on the outer walls of a support barrel and the right guide cylinder; the second thermal insulation layer is fixedly connected to the outer wall of the first thermal insulation layer through an anchoring part; the third thermal insulation layer is filled between the outer wall of the second thermal insulation layer and the inner wall of the corrugated pipe; the further improvements are that a gland packing is arranged between the first thermal insulation layer and the outer wall of the left guide cylinder; the thermal insulation layer I is a composite reflective insulation board; the thermal insulation II is formed by three layers of ceramic fibers; the thermal insulation layer II is a flocculent heat-resistant packing. By adopting a composite heat insulation structure, the high-temperature-resistant corrugated expansion joint has the advantages of good heat insulation effect, high temperature resistance and long service life.

Description

technical field [0001] The invention relates to a pipeline compensator, in particular to a bellows compensator. Background technique [0002] The bellows compensator in the pipeline is used to absorb or compensate the axial deformation and axial thrust, so as to protect the safe operation of the pipeline. However, there is also the problem that the bellows compensator is easily damaged in practical applications. The reason is that the existing commodity bellows compensators on the market lack a heat-insulating structure and are greatly affected by the ambient temperature, especially the bellows in the bellows compensator. The tube is a thin-walled elastic compensation element. When the temperature of the bellows compensator reaches a certain temperature, the heated thin-walled bellows is easy to lose stability. Once the bellows undergoes plastic deformation, it will lose its proper elastic compensation function. The bellows compensator The failure makes the operation of sup...

AI Technical Summary

Problems solved by technology

However, there is also the problem that the bellows compensator is easily damaged in practical applications. The reason is that the existing commodity bellows compensators on the market lack a heat-insulating structure and are greatly affected by the ambient temperature, especially the bellows in the bellows compensator. The tube is a thin-walled elastic compensation element. When the temperature of the bellows compensator reaches a certain temperature, the heated thin-walled bellows is prone to instability. Once the bellows undergoes plastic deformation, it will lose its proper elastic compensation function. The bellows compensator The failure caused the operation of supporting pipelines to bring safety hazards

Images