发明名称 |
Pressure compensating hydraulic control valve system |
摘要 |
An improved pressure-compensated hydraulic system for feeding hydraulic fluid to one or more hydraulic actuators. A remotely located, variable displacement pump provides an output pressure equal to input pressure plus a constant margin. A pressure compensation systems requires that a load-dependent pressure be provided to the pump input through a load sense circuit. A reciprocally spooled, multi-ported isolator transmits the load-dependent pressure to the pump input but prevents fluid in the load sense circuit from leaving the load sense circuit and flowing through a relatively long conduit leading to the remotely located pump. In a multi-valve array, at least one valve section has a backflow-preventing shuttle valve which prevents backflow through the pressure compensation system if a main relief valve is operative.
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申请公布号 |
US5715865(A) |
申请公布日期 |
1998.02.10 |
申请号 |
US19960747843 |
申请日期 |
1996.11.13 |
申请人 |
HUSCO INTERNATIONAL, INC. |
发明人 |
WILKE, RAUD A. |
分类号 |
F16K17/22;F15B11/05;F15B13/04;F16K37/00;G05D7/01;(IPC1-7):F15B13/08 |
主分类号 |
F16K17/22 |
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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