Maintenance-free self-sealing sleeve compensator
A sleeve compensator and self-sealing technology, which is applied in expansion compensation devices for pipelines, pipes/pipe joints/fittings, adjustable connections, etc., can solve problems such as unsatisfactory sealing performance, and achieve improved use stability, Effect of improving service life and improving sealing reliability
Inactive Publication Date: 2014-08-13
江苏苏创管业科技有限公司
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Problems solved by technology
Years of use have shown that the sealing performance of the injection-filled sleeve compensator has been improved to a certain extent, and the maintenance workload has been reduced to a certain extent. However, the sealing performance of the existing injection-filled sleeve compensator is still not ideal, and frequent maintenance and adjustment are required. Sealed state
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[0015] The present invention will be further described below according to the accompanying drawings and in conjunction with the embodiments.
[0016] The maintenance-free self-sealing sleeve compensator shown in the attached figure includes outer casing 1, core pipe 3, flexible graphite packing 6, bolt and nut assembly 8, gland 9 and filling valve 7; Ring 2; an inner shoulder 1.1 is provided in the middle of the inner wall of the outer casing 1. In this embodiment, the inner wall of the inner shoulder 1.1 of the outer casing 1 is provided with a right guide bush 11, and the inner hole of the right guide bush 11 is in clearance with the outer wall of the core pipe 3 ; The outer sleeve 1 is sleeved on the core tube 3 from left to right.
[0017] The gland 9 is set on the outer wall of the left end of the core tube 3, and is flanged to the left end of the outer casing 1 through the bolt and nut assembly 8, and the compression spring 10 is set on the bolt between the left end surf...
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The invention discloses a maintenance-free self-sealing sleeve compensator, which comprises an outer sleeve, a core tube, a flexible graphite packing, a bolt and nut component, a gland and an injection filling valve, wherein the pipe end of the gland extends into a cavity formed by the inner wall of the outer sleeve, the left end face of an inner convex shoulder and the outer wall of the core tube so as to form a sealing cavity; the injection filling valve is fixedly connected to the outer wall of the outer sleeve and is communicated with the sealing cavity; the flexible graphite packing is filled in the sealing cavity; graphite sealing rings are arranged on two sides of the flexible graphite packing in the sealing cavity; the graphite sealing rings, the inner wall of the outer sleeve and the outer wall of the core tube are in interference fit, contact surfaces of the graphite sealing rings and the flexible graphite packing are conical surfaces, and the big diameter ends of the conical surfaces are toward the flexible graphite packing; the further improvements are that an elastic self-sealing structure is formed by a compression spring; a right guide bush and a left guide bush are respectively arranged on the inner wall of the inner convex shoulder of the outer sleeve and the inner wall of the gland; a wear-resistant coating is arranged on the outer wall of the core tube. The maintenance-free self-sealing sleeve compensator has the advantages of good self-sealing property, maintenance freeness, good abrasion resistance and long service life.
Description
technical field [0001] The invention relates to a pipeline compensator, in particular to a filling type sleeve compensator. Background technique [0002] The injection-filled sleeve compensator can inject the sealant from the injection port by pressure, and it can be replenished when the pipeline network is running for non-stop maintenance. Years of use have shown that the sealing performance of the injection-filled sleeve compensator has been improved to a certain extent, and the maintenance workload has been reduced to a certain extent. However, the sealing performance of the existing injection-filled sleeve compensator is still not ideal, and frequent maintenance and adjustment are required. Sealed state. With the rapid development of urban central heating, the performance requirements for sleeve compensators are also getting higher and higher, requiring good sealing performance and no maintenance after installation and operation. Contents of the invention [0003] Ai...
Claims
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IPC IPC(8): F16L51/00
CPCF16L27/1017F16L27/1021F16L51/00
Inventor 卢勇
Owner 江苏苏创管业科技有限公司