Wear-resistant rotating compensator

Abstract

A wear-resistant rotating compensator is used for compensating for thermal expansion and cold contraction of a high pressure hot water pipeline and comprises an outer cylinder (1) and an inner pipe (2). A flange (3) is arranged at the right end of the outer cylinder, and the left end of the inner pipe is located in the outer cylinder. The wear-resistant rotating compensator is characterized in that a sealing sleeve (4) is arranged at the left end of the inner pipe in a sleeving mode, a flange which extends in the radial direction and located at the right end of the sealing sleeve is arranged on the inner pipe in a sleeving mode, and a locating disc (6) is attached to the flange in a pressing mode; the sealing sleeve is made of silicon rubber, the left end of a sleeve body of the sealing sleeve is fastened to the inner pipe through an annular hoop (5), and a radial gap is reserved between the sleeve body of the sealing sleeve and the outer cylinder. The wear-resistant rotating compensator has the advantages that when the outer cylinder and the inner pipe rotate relative to each other, friction between the sealing sleeve and the inner pipe is small, the sealing sleeve is scarcely abraded, and the sealing performance of the rotating compensator can be maintained. The pressure exerted on the sealing sleeve by fluid media in the rotating compensator can be absorbed by the inner pipe and the locating disc, so that the sealing sleeve is capable of bearing large pressure, and the pressure bearing capacity of the wear-resistant rotating compensator is improved.

Description

technical field [0001] The invention relates to a rotary compensator for compensating thermal expansion and contraction of high-pressure hot water pipelines. Background technique [0002] The existing rotary compensator includes an outer cylinder and an inner tube. One end of the inner tube is placed in the outer tube, and graphite sealing packing is pressed between the overlapped part of the inner tube and the outer tube. In order to ensure the sealing performance, the graphite packing must have sufficient The pre-tightening force makes the graphite filler extend in the radial direction and stick closely to the inner wall of the outer cylinder and the outer circle of the inner tube. When the relative rotation occurs between the outer cylinder and the inner tube, the graphite filler will be worn, so that the rotation compensator The sealing performance gradually decreases, especially when the internal pressure of the pipeline changes greatly, it is difficult to guarantee the...

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Problems solved by technology

[0002] The existing rotary compensator includes an outer cylinder and an inner tube. One end of the inner tube is placed in the outer tube, and graphite sealing packing is pressed between the overlapped part of the inner tube and the outer tube. In order to ensure the sealing performance, the graphite packing must have sufficient The pre-tightening force makes the graphite filler extend in the radial direction and stick closely to the inner wall of the outer cylinder and the outer circle of the inner tube. When the relative rotation occurs between the outer cylinder and the inner tube, the graphite filler will wear and tear the rotation compensator. The sealing performance gradually decreases, especially when the internal pressure of the pipeline changes greatly, it is difficult to guarantee the sealing performance of the rotary compensator

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