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Novel high-strength low-rigidity metal expansion joint

A metal expansion and high-strength technology, applied in the field of expansion joints, can solve the problems of reduced elastic properties of bellows, reduced strength of bellows under extrusion stress, increased stiffness, etc., and achieves the effect of improving displacement compensation ability

Inactive Publication Date: 2020-12-04
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] While the reinforcement ring restricts the displacement of the bellows, due to the internal pressure of the bellows, the bellows and the reinforcement ring are likely to generate a large extrusion stress, resulting in a decrease in the strength of the bellows, and at the same time the elastic performance of the bellows is greatly reduced and the stiffness is increased.

Method used

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  • Novel high-strength low-rigidity metal expansion joint
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Embodiment Construction

[0016] The implementation of the present invention will be described in detail below with reference to the drawings and examples, so as to fully understand and implement the implementation process of how to use technical means to solve technical problems and achieve technical effects in the present invention.

[0017] Specific embodiments of the present invention such as figure 1 and figure 2 As shown, a new type of high-strength and low-rigidity metal expansion joint includes multilayer bellows, flanges, gaskets and reinforcing rings. The multilayer bellows includes four layers of corrugated plates, and each layer of corrugated plates is tightly connected; The end face of the flange is fixedly connected with the end face of the multi-layer corrugated pipe, and the reinforcing ring is arranged at the joint between the flange and the multi-layer corrugated pipe. During processing and assembly, it is controlled by the pads.

[0018] The reinforcing ring 3 and the flange 4 can...

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Abstract

The invention discloses a novel high-strength low-rigidity metal expansion joint which comprises a multi-layer corrugated pipe, flanges, gaskets and reinforcing rings. The multi-layer corrugated pipecomprises four layers of wave plates; all the layers of wave plates are tightly connected; the end faces of the flanges are fixedly connected with the end faces of the multi-layer corrugated pipe; thereinforcing rings are arranged at joints of the flanges and the multi-layer corrugated pipe; gaps are reserved between the reinforcing rings and the corrugated pipe along the axial direction, and arecontrolled through the gaskets in the machining and assembling process. According to the novel high-strength low-rigidity metal expansion joint provided by the invention, the overall rigidity of theexpansion joint is reduced while the strength performance of the expansion joint is improved.

Description

technical field [0001] The invention relates to the technical field of expansion joints, in particular to a novel high-strength and low-rigidity metal expansion joint. Background technique [0002] Bellows expansion joints, as a freely expandable elastic compensation element, have the advantages of reliable operation, good performance, and compact structure, and are widely used in petrochemical, steel, gas, food, medicine, construction, aerospace, nuclear power and other fields. The bellows expansion joint is used as a heat compensation and displacement compensation element in the pressure vessel and piping system, and its main body is a metal bellows. It is an elastic body composed of one or several thin-walled bellows with sufficient strength. According to the number of layers of the pipe wall, the bellows can be divided into single-layer and multi-layer bellows; according to the form of corrugation distribution, it can be divided into annular bellows and spiral bellows; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L51/02
CPCF16L51/022
Inventor 罗炳亮王云丁相玉李茂源张呈
Owner NANCHANG HANGKONG UNIVERSITY
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