Title:
ANTI-DISENGAGEMENT HOUGH-TYPE PIPELINE CONNECTION REPAIRING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/077700
Kind Code:
A1
Abstract:
The purpose of the present application is to provide a Hough-type pipeline connection repairing device. There are straight grooves and arc grooves on two sides and ends of each Hough section half; skeleton sealing rings are embedded in the straight grooves and the arc grooves; each skeleton sealing ring comprises a straight segment and a semi-circular segment at an end of the straight segment; the outer wall of each axial end of the Hough section half is axially shaped like a step comprising a protruding ring; the protruding ring is embedded in a slot of a close end of a Hough-type anti-disengagement clamp; the snap-fit segment of the slot and the protruding ring forms an axial blocking fit that limits axial displacement separation, and a radial constraint press fit in surface contact with the axial embedding segment. Axial position-limiting connection of a connected pipe body without axial separation displacement is achieved, and the concentricity of the pipe center of the repairing device and the pipe center of a pipe body to be connected is guaranteed.
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| WO/2018/175566 | PIPE REPAIR SYSTEM |
| JP7233934 | leak prevention device |
| WO/2015/145377 | PIPE REPAIR FITTING WITH END SEALS |
Inventors:
JIAO XIANGJING (CN)
LIU JIE (CN)
LIU JIE (CN)
Application Number:
PCT/CN2022/131077
Publication Date:
April 18, 2024
Filing Date:
November 10, 2022
Export Citation:
Assignee:
ANHUI TONGFA EQUIP CO LTD (CN)
International Classes:
F16L55/172; F16L55/18
Foreign References:
| CN111174026A | 2020-05-19 | |||
| CN111486297A | 2020-08-04 | |||
| CN111486298A | 2020-08-04 | |||
| CN102121553A | 2011-07-13 | |||
| CN213206958U | 2021-05-14 | |||
| US20180172196A1 | 2018-06-21 |
Attorney, Agent or Firm:
HEFEI CHANGYUAN IP LAW OFFICE (CN)
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