Zero-thrust multifunctional rotating compensator and manufacturing method thereof

Abstract

The invention relates to a zero-thrust multifunctional rotating compensator and a manufacturing method thereof. The compensator comprises a rotating pipe and a rotating seat; one end of the rotating seat is provided with a rotating seat flange, and the other end of the rotating seat is provided with an arc-shaped shrinkage pipe; one side of the rotating seat flange is provided with a gland flange; the outer circumference of the rotating pipe is provided with a convex ring; the inner wall of the rotating seat is provided with a packing ring; the gland flange and the convex ring of the rotating pipe form a first packing cabin; the convex ring of the rotating pipe and the packing ring of the rotating seat form a second packing cabin; the end, close to the arc-shaped shrinkage pipe of the rotating seat, of the rotating pipe is provided with a port which is outwards turned; and an end surface sealing ring is arranged between the outwards-turned port of the rotating pipe and the packing ring of the rotating seat. The manufacturing method comprises the steps: (1) outwards turning the end of the rotating pipe; (2) arranging a metal end surface sealing ring; and (3) stretching the end of the rotating seat to form an arc-shaped pipe which is inwards shrunk. The zero-thrust multifunctional rotating compensator is suitable for a high-pressure heat pipe network, free of welding in whole, high in bearing strength, free of eccentricity, good in sealing performance, safe and reliable in use and long in product life.

Description

technical field [0001] The invention relates to the technical field of pipeline compensators, in particular to a non-thrust multifunctional rotary compensator and a manufacturing method of the rotary compensator. Background technique [0002] At present, when the existing heat pipe network transports hot water, steam and other high-temperature media, due to the thermal expansion and contraction of the pipeline due to the influence of the medium temperature, the telescopic compensator or rotary compensator is generally used to compensate the displacement of the pipeline. Because the displacement of the compensation pipe is compensated by the expansion and contraction of the sliding core tube, the compensation ability of the sleeve expansion joint is limited by the structure, and the seal between the sliding core tube and the packing cannot be kept in good condition for a long time, and it is prone to leakage after long-term use. The structure of the rotary compensator usually...

AI Technical Summary

Problems solved by technology

[0003] Existing rotary compensators generally have the following problems in high-temperature and high-pressure environments: the fit gap between the rotating parts is large, and the relative rotation stability of the inner and outer pipes is poor due to the thrust of the pipeline, which is prone to eccentric deflection of different axes and increases the rotation resistance , reducing the flexibility of rotation compensation

In the prior art, steel balls are usually used as the rolling friction pair to control the coaxial rotation of the inner and outer tubes. The structure is complex and the processing is difficult.

The bearing load of the steel ball is small, and it is easy to wear or be crushed when used in high-pressure pipelines. After a period of use, it will affect the sealing performance of the sealing packing, resulting in sealing failure and leakage.

resulting in heat loss in the pipeline

If it is not found and maintained in time, it may even cause safety production accidents, which will not only directly affect economic benefits, but also cause environmental problems.

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