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Active expansion joint

A technology of expansion joints and sleeves, which is used in non-detachable pipe connections, pipe/pipe joints/pipe fittings, adjustable connections, etc., can solve the problem of large interval between connecting pipes, leakage of pipes, and difficulty in ensuring the length of pipes at both ends inserted into expansion joints. and other problems, to achieve the effect of eliminating the leakage of the pipeline

Active Publication Date: 2016-08-31
谢继中 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this structure, when the position of the upper and lower pipes has been fixed, the fixed protrusion prevents the expansion joint from moving freely on the pipe, and it is difficult to ensure the length of the two ends of the pipe inserted into the expansion joint. The distance between the connecting pipes is relatively large, and there is a huge pipe leakage. Hidden dangers

Method used

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  • Active expansion joint
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Embodiment Construction

[0017] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0018] The movable expansion joint includes expansion joint cover 1, sealing ring 2, sleeve 3 and limit tube 4. The upper part of the sleeve is a socket connected by an elastic sealing ring, and its inner diameter matches the outer diameter of the standpipe. The lower part of the cylinder accommodates the limit tube, and its inner diameter matches the outer diameter of the limit tube. The inner diameter of the limit tube matches the outer diameter of the standpipe. In the step, one end of the limit tube placed in the sleeve has a limit protrusion.

[0019] The limit protrusion is an inward ring, and the width of the ring is 2.5mm.

[0020] The upper part of the sleeve is provided with a waterproof rubber gasket as a sealing ring, which is sealed with a telescopic joint cover to ensure that the pipe is still normal when the riser expands with heat a...

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PUM

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Abstract

The invention belongs to the technical field of pipeline connection. The movable expansion joint comprises an expansion joint cover, a sealing ring, a sleeve and a limiting pipe. The upper portion of the sleeve is provided with a bellmouth in connection with the elastic sealing ring. The inner diameter of the upper portion of the sleeve is matched with the outer diameter of a vertical pipe. The lower portion of the sleeve contains the limiting pipe. The inner diameter of the lower portion of the sleeve is matched with the outer diameter of the limiting pipe. The inner diameter of the limiting pipe is matched with the outer diameter of the vertical pipe. A limiting protrusion is arranged at the end, inside the sleeve, of the limiting pipe. The movable expansion joint can be used in cooperation with an embedded casing pipe during engineering installation for connection, damaged parts can be rapidly replaced during maintenance, good connection is ensured, the movable expansion joint can replace a traditional joint during PVC water drainage vertical pipe installation and vertical pipe maintenance, and the hidden danger of pipe leakage can be completely eradicated.

Description

technical field [0001] The invention belongs to the technical field of pipe connection, and in particular relates to a pipe fitting used for connecting hard polyvinyl chloride (PVC-U) plastic pipes for building drainage. Background technique [0002] In the installation and construction of standpipes, the construction speed is fast with embedded casings, but the positions of the upper and lower pipes between floors have been fixed, and expansion joints are needed to connect them. [0003] Pipelines are often cut due to aging, cracking or structural changes, and expansion joints are required to reconnect the disconnected pipes. [0004] The upper part of the existing expansion joint (GB / T5836.2-2006) is a socket connected by an elastic sealing ring, and the lower part is a socket with a fixed protrusion, which limits the position of the connecting pipe. In this structure, when the position of the upper and lower pipes has been fixed, the fixed protrusion prevents the expansi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L13/10F16L55/16
CPCF16L27/12F16L55/16
Inventor 谢继中谢伦玉谢继长
Owner 谢继中