DEVICE FOR PREVENTING UNDESIRED RELEASE OF LIQUID
申请公布号:WO1999040351(A1)
申请号:HU1999000010
申请日期:1999.02.04
申请公布日期:1999.08.12
摘要:<p>In a device for preventing undesired release of liquid through a substantially flexible discharge pipe (10) of a system or an installation supplied by or containing, at least intermittently, pressurized liquid, the device comprises at least one flow-controlled valve means that is inserted into, or is connected, downstream in flow direction of the liquid, to a flexible hose section of the discharge pipe (10). The valve means is designed as a flow-controlled check valve (4) allowing the free flow of liquid therethrough in a substantially vertical upward direction of the liquid flow only. The device further comprises a flow switch (5) capable of converting fluid pressure into an electric signal. The flow switch (5) is mounted into the discharge pipe (10) of the system or installation at a location upstream in flow direction of the liquid from the flow-controlled check valve (4). When used in a system or installation having an inlet pipe (12) for introducing, at least intermittently, pressurized liquid, the device may comprise as an option, another flow-controlled valve (6) capable of blocking the flow of liquid if a pre-determined threshold value of the flow velocity of the liquid is reached at or exceeded.</p>
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