发明名称 |
CLAPET D'ARRET A AMORTISSEUR, NOTAMMENT POUR CONDUITE D'EAU D'ALIMENTATION POUR CENTRALE NUCLEAIRE |
摘要 |
<p>An improved check valve has an operating chamber with a disc disposed therein which is capable of axial movement from a closed position against a valve seat to an opened position to prevent feedwater from flowing from the normal outlet to the normal inlet of the valve. A cylindrical member extends upwardly from the disc through a fixedly mounted baffle plate which generally separates an upper portion of the operating chamber from the lower portion. A piston is mounted on an extended end of the cylindrical member to generally define a dashpot chamber between the piston and the baffle plate. The dashpot chamber entraps a greater volume of feedwater when the valve is open than when closed to limit valve closure rate by limiting the rate at which feedwater leaves the dashpot chamber during closure.</p> |
申请公布号 |
FR2328148(A1) |
申请公布日期 |
1977.05.13 |
申请号 |
FR19760030880 |
申请日期 |
1976.10.14 |
申请人 |
ROCKWELL INTERNATIONAL CORP |
发明人 |
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分类号 |
F16K15/00;F16K15/06;(IPC1-7):16K15/18;16K31/363;16K17/34;21D3/04 |
主分类号 |
F16K15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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