Title:
A PROTECTION DEVICE IN EVENT OF PIPE RUPTURE
Document Type and Number:
WIPO Patent Application WO/2001/073339
Kind Code:
A1
Abstract:
A protection device in event of pipe rupture comprises a main valve and a controller. The main valve has a valve body, a valve core in the body and a valve stem connected to the core. The controller contains a cylinder, a piston in the cylinder, a controlling rod connected to the piston and a sensor for flow rate. The rod is transmissibly connected to the stem. The device can automatically close pipeline in event of downstream pipe rupture to prevent fluid leak.
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Inventors:
ZENG XIANGWEI (CN)
Application Number:
PCT/CN2001/000139
Publication Date:
October 04, 2001
Filing Date:
February 22, 2001
Export Citation:
Assignee:
ZENG XIANGWEI (CN)
International Classes:
F16K17/32; F16K17/34; F16K17/36; F16K31/163; F16K31/54; F16L55/10; F16L57/02; F17D5/02; (IPC1-7): F16L55/10; F16L57/02; F16K17/34; F16K17/36; F17D5/02
Foreign References:
| FR2689617A1 | 1993-10-08 | |||
| FR2716950A1 | 1995-09-08 | |||
| FR2741137A1 | 1997-05-16 | |||
| CN1046968A | 1990-11-14 | |||
| CN2175403Y | 1994-08-24 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (Huibin Building Chaoyang Distric, 8 Beichen Dong Street Beijing 1, CN)
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