LEAK STOPPING DEVICE FOR SAND HOLE AT TANK BOTTOM CONNECTING PIPE CORNER AND APPLICATION THEREOF

WIPO Patent Application WO/2021/004094

A1

A leak stopping device for a sand hole at a tank bottom connecting pipe corner, comprising: a sealing gasket (1), a connecting pipe (2), an ejector rod (3), an ejector rod nut (4), an ejector rod fixing device (5), and a clamp assembly (6). The ejector rod (3) is of a rod-shaped structure, and the outer surface thereof is provided with a thread. The ejector rod nut (4) is screwed onto the ejector rod (3) by means of the thread. One end of the ejector rod (3) extends into one end of the connecting pipe (2) so that the connecting pipe (2) is sleeved on the ejector rod (3), and the connecting pipe (2) can freely move on the ejector rod (3). The sealing gasket (1) is provided on the other end of the connecting pipe (2). The other end of the ejector rod (3) can cooperate with the ejector rod fixing device (5) so as to fix the ejection rod (3) to the clamp assembly (6). The clamp assembly (6) can be fixed to a tank bottom connecting pipe. By designing a special tool outside a leak point of a fillet weld sand hole to exert external force, the purpose of online leak stoppage is achieved, and the problem in the existing leak stopping device of inability to stop the leak for the sand hole formed in the tank bottom connecting pipe corner is well solved.

WO/2000/057099	APPARATUS AND METHOD FOR REPAIRING A LEAK
WO/2011/081252	TEE PIPE FOR PREVENTING THE CUTOFF OF WATER SUPPLY, AND METHOD FOR PREVENTING WATER LEAKAGE USING SAME
WO/2021/032140	PRE-TIGHTENING FORCE REPAIRING METHOD, REPAIRING METHOD INVOLVING COMBINATION OF PRE-TIGHTENING FORCE AND CLAMP, AND REPAIRED PIPELINE

BAO LEILEI (CN)
LI ZHIYUAN (CN)
XU KAIFENG (CN)
WU XIAOPING (CN)
CHEN MING (CN)
ZHANG HAIYONG (CN)
ZHU JIAN (CN)
ZHAO PENG (CN)
QIAO HAOJIE (CN)
LI CHENGYU (CN)
SHAO YUE (CN)

PCT/CN2020/081263

January 14, 2021

March 26, 2020

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YANKUANG LUNAN CHEMICALS CO LTD (CN)

F16L55/17

CN110375149A	2019-10-25
CN207455048U	2018-06-05
CN201100507Y	2008-08-13
CN205882543U	2017-01-11
KR20170003761A	2017-01-10

JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)

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