| 摘要 |
<p>A flow-control passive valve controls flow of fluid between an upstream space at high pressure and downstream space at low pressure. The valve comprises a valve body in fluid communication with the upstream and downstream spaces and within which are defined first and second spaces. A movable member is slidably received in a body chamber, and a force is applied to the member tending to keep it in a given“non-working”position. Metering discs meter the flow from the upstream to downstream space through the body and comprise first, second, and third fixed restrictors and first and second variable restrictors. Pressure in the first space is lower than that in the upstream space via a pressure drop through the first fixed restrictor while pressure in the second space is variable between the pressure in the first space and that in the downstream space depending on the position of the member.</p> |
