Title:
PIPELINE REPAIRING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/047566
Kind Code:
A1
Abstract:
A pipeline repairing device, comprising a shell (11). A pressure relief hole (12) is provided in the shell (11); a choke plug (13) capable of being opened and closed is disposed at the outer end part of the pressure relief hole (12); and the bottom of the choke plug (13) is provided with a sealing part (131) which matches the pressure relief hole. In the assembling and use processes, when pressure is present in a pipeline being repaired, first the choke plug (13) is opened a suitable amount so as to form a certain gap between the choke plug (13) and the pressure relief hole (12) so that pressure relief of the pipeline may be facilitated, and then the shell (11) is installed at the corresponding position of the damaged pipeline so as to implement repair, and the choke plug (13) and the pressure relief hole (12) are closed again after the repair is completed, so that the pressure relief hole (12) is plugged up using the sealing part (131).
Inventors:
WANG LIANGMEI (CN)
QIAN LIGANG (CN)
QIAN LIGANG (CN)
Application Number:
PCT/CN2018/088618
Publication Date:
March 14, 2019
Filing Date:
May 28, 2018
Export Citation:
Assignee:
ANHUI HENGSHENG SCIENCE AND TECH DEVELOPMENT GROUP CO LTD (CN)
International Classes:
F16L55/17
Foreign References:
| CN204592706U | 2015-08-26 | |||
| CN107345613A | 2017-11-14 | |||
| CN105627024A | 2016-06-01 | |||
| CN106439374A | 2017-02-22 | |||
| CN101701658A | 2010-05-05 | |||
| CN1594957A | 2005-03-16 | |||
| CN103090153A | 2013-05-08 | |||
| CN204062322U | 2014-12-31 | |||
| CN202392355U | 2012-08-22 | |||
| US5375888A | 1994-12-27 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
Download PDF: