Title:
UNDERWATER REPAIRING METHOD FOR LARGE-DIAMETER HDPE PIPELINE
Document Type and Number:
WIPO Patent Application WO/2021/232479
Kind Code:
A1
Abstract:
An underwater repairing method for a large-diameter HDPE pipeline. The method comprises: using a semicircular clamp hoop (300) cooperated with concrete encapsulation to fix a rubber plate (700) to a pipeline to be repaired (200); winding the pipeline by using a rubber cloth; installing a reinforcement cage (400) and a formwork (500); pouring concrete to stop water. In this way, no extra pipeline needs to be mounted, the operation difficulty is small, the repairing performance is high, and economic performance is good.
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Inventors:
ZENG FAN (CN)
XUE LINHU (CN)
CHEN MENG (CN)
ZHANG JUN (CN)
FENG ZHENZHOU (CN)
DONG ZHILIANG (CN)
MA YIGUANGMING (CN)
XU YUNFEI (CN)
WU KAI (CN)
LIU KAI (CN)
HU HANQING (CN)
XUE LINHU (CN)
CHEN MENG (CN)
ZHANG JUN (CN)
FENG ZHENZHOU (CN)
DONG ZHILIANG (CN)
MA YIGUANGMING (CN)
XU YUNFEI (CN)
WU KAI (CN)
LIU KAI (CN)
HU HANQING (CN)
Application Number:
PCT/CN2020/093321
Publication Date:
November 25, 2021
Filing Date:
May 29, 2020
Export Citation:
Assignee:
CCCC FOURTH HARBOR ENG CO LTD (CN)
CCCC FOURTH HARBOR ENG INST CO (CN)
2ND ENG CO CCCC 4TH HARBOR ENG CO LTD (CN)
CCCC FOURTH HARBOR ENG INST CO (CN)
2ND ENG CO CCCC 4TH HARBOR ENG CO LTD (CN)
International Classes:
F16L1/26
Foreign References:
| CN103711988A | 2014-04-09 | |||
| JPS61126223A | 1986-06-13 | |||
| CN203162432U | 2013-08-28 | |||
| CN101680591A | 2010-03-24 | |||
| CN106979383A | 2017-07-25 | |||
| CN202852198U | 2013-04-03 | |||
| GB1417987A | 1975-12-17 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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