Maintenance-free sleeve compensator

Abstract

The invention relates to a maintenance-free sleeve compensator for compensating the thermal expansion and chilling shrinkage of a hot water pipeline. The maintenance-free sleeve compensator comprises an outer pipe (1) and an inner pipe (4), wherein the left end of the inner pipe stretches into a pipe body (2) of the outer pipe, and a sealing sleeve (6) is sheathed on the inner pipe. The maintenance-free sleeve compensator is characterized in that the sealing sleeve is made of a silicone rubber material, one end of the sealing sleeve is connected at the left end of the inner pipe by a tightening device in a sealing manner, a clearance is left between the outer wall of the sealing sleeve and the pipe body of the outer pipe, and a loop body (8) extending from the other end of the sealing sleeve radially is connected to a flange (3) at the right end of the outer pipe. The maintenance-free sleeve compensator has the characteristics that two ends of the sealing sleeve are fixedly connected with the outer pipe and the inner pipe in a sealing manner respectively, so that when the inner pipe and the outer pipe move oppositely, the middle part of the sealing sleeve is abraded, two connecting ends of the sealing sleeve cannot be abraded, and after the middle part of the sealing sleeve is abraded, the sealing property of the sleeve compensator can be still kept; and compared with the maintenance-free sleeve compensator in the prior art, the maintenance-free sleeve compensator is maintenance-free in sealing property within a service life.

Description

technical field [0001] The invention relates to a maintenance-free sleeve compensator for compensating the linear expansion of the hot water pipeline. It is connected in series on the hot water pipeline. , the inner tube and the outer tube achieve compensation for linear expansion through relative movement. Background technique [0002] The structure of the existing sleeve compensator generally includes an inner tube and an outer tube, the inner tube is inserted into the outer tube, a sealing packing is provided between the inner tube and the outer tube, and the ends of the inner tube and the outer tube are connected to the heat pipe. When the hot water pipe expands linearly, the inner pipe and the outer pipe move relatively to compensate for the linear expansion; the disadvantage is that the relative movement between the inner pipe and the outer pipe will cause the packing to wear and cause the sealing performance to decline; in addition, the pipe When linear expansion occ...

AI Technical Summary

Problems solved by technology

[0002] The structure of the existing sleeve compensator generally includes an inner tube and an outer tube, the inner tube is inserted into the outer tube, a sealing packing is provided between the inner tube and the outer tube, and the ends of the inner tube and the outer tube are connected to the heat pipe. When the hot water pipe expands linearly, the inner pipe and the outer pipe move relatively to compensate for the linear expansion; the disadvantage is that the relative movement between the inner pipe and the outer pipe will cause the packing to wear and cause the sealing performance to decline; in addition, the pipe When linear expansion occurs, it is difficult to ensure that the displacement direction is consistent with the relative movement direction of the inner tube and the outer tube of the sleeve compensator, so that the friction force on the sealing packing is biased to one side, which intensifies the wear of the packing and increases the maintenance times. Shortened sleeve compensator life

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