发明授权
- 专利标题： Automatically-actuated safety device with a double-seated valve to regulate the flow rate of a fluid
- 专利标题（中）： 具有双阀座的自动启动安全装置，用于调节流体的流速
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申请号： US10637992申请日： 2003-08-08
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公开(公告)号： US06962165B2公开(公告)日： 2005-11-08
- 发明人: Cyrille Delprat , David Leme , Lahouari Bouajaj , Sylvain Pineau
- 申请人： Cyrille Delprat , David Leme , Lahouari Bouajaj , Sylvain Pineau
- 申请人地址： FR Saint-Denis la Plaine Cédex
- 专利权人： Gaz de France
- 当前专利权人： Gaz de France
- 当前专利权人地址： FR Saint-Denis la Plaine Cédex
- 代理机构： Collard & Roe, P.C.
- 优先权： FR0210172 20020809
- 主分类号： F16K17/34
- IPC分类号： F16K17/34 ; F16L55/132
摘要：
A safety device for insertion into a pipeline (K) in which fluid circulates in an upstream (X−) and a downstream (X+) direction, comprises a tube (1) that provides the fluid with a central circulatory passage (CC) regulated by a central valve (3) that closes in the event of an excessive flow of this fluid. There is an annular valve closure member (4) which is elastically malleable, mounted to the external periphery of the tube (1), and provides the fluid with a peripheral circulatory passage which it selectively obstructs by subjecting a radial expansion in the event of an excessive flow of fluid.
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