Low-stiffness balanced pipeline compensation device for heating pipe network

Abstract

A low-stiffness balanced pipeline compensation device for a heating pipe network is disclosed and comprises flanges, backing rings, a metal protection bellows and an arc-shaped flexible pipe; the arc-shaped flexible pipe is integrally formed by an outer rubber layer, a skeleton layer and an inner rubber layer; the middle of the arc-shaped flexible pipe bulges towards the periphery to form a curvedportion, and two ends of the arc-shaped flexible pipe are folded into flanged portions; the inner sides of the flanged portions at the two ends are connected with the outer end surfaces of the flanges; the backing rings and the metal protection bellows are arranged between the inner end faces of the flanges at two ends; the metal protection bellows sleeves the outer side of the curved portion; the two ends of the metal protection bellows are respectively connected with the backing rings; and the backing rings are connected with the flanges on the corresponding sides. Through structural type innovation, the advantages of metal materials and rubber materials as well as the combination of the two kinds of materials are fully utilized, so that the new pipeline compensation device has the characteristics of large displacement compensation, high temperature resistance, good balance performance, low rigidity and corrosion resistance, and improves the performance and range of use of the compensation device.

Description

technical field [0001] The invention belongs to the field of urban heat supply, and specifically relates to a low-rigidity balanced pipeline compensation device for a heat supply pipeline network. Background technique [0002] With the continuous development of urban heating technology, on the one hand, the compensation displacement required by the piping system continues to increase; on the other hand, for pipelines with strict force requirements, a compensation device with low rigidity and balance of pipeline pressure and thrust is usually required . The traditional metal straight pipe pressure balance compensator can realize balanced installation and use, but this type of expansion joint is heavy, which will generate additional force on the pipeline, has high rigidity, and at the same time has large dimensions and strict installation space requirements. In contrast, the non-metallic flexible joint compensation device has the advantages of compact structure, low rigidity ...

AI Technical Summary

Problems solved by technology

However, the current non-metallic flexible pipes have low resistance to high temperature and high pressure, and are easily aged due to the influence of sunlight and temperature, so they are not suitable for use on heating nets.

At the same time, in the past, the design of flexible joints often ignored the consideration of balance performance. When the working pressure changes, the flexible joint itself or the piping system may produce excessive additional force or additional displacement, which will affect the normal operation of the system and even cause serious damage. ACCIDENT

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