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    • 3. 发明授权
    • Hydraulic fuse valve assembly
    • 液压保险丝阀总成
    • US4699166A
    • 1987-10-13
    • US773836
    • 1985-09-06
    • Harold GoldTadeusz Budzich
    • Harold GoldTadeusz Budzich
    • F16K17/30
    • F16K17/30Y10T137/0324Y10T137/7785Y10T137/7869
    • A fluid fuse is quickly operable to shut off fluid flow upon rupture or other failure of fluid conducting line or other structural member downstream of the fuse. The fuse is actuated during decompression fluid flow resulting from decompression of fluid and elastic contraction of structural components downstream of the fluid fuse. During decompression fluid flow, a valve member is moved from an open position to a closed position by two forces generated by a pressure differential caused by sudden decompression of the fluid and developed across two variable, sharp edge, viscosity insensitive orifices, positioned in series and separated by a flow cut-off and sealing surface. The closing force, generated by the pressure differential of the upstream orifice is dominant and increases with the displacement of the closing member in a predetermined manner, permitting the use of a high preload and high rate opposing spring, at relatively low pressure differentials. The sealing surface of the fuse is provided with limited freedom of alignment to permit tight sealing. The fuse assembly includes a manually adjustable bypass arrangement and a pressure peak attenuating control.
    • 流体保险丝可快速操作,以在熔断体下游的流体导管或其他结构构件断裂或其它故障时切断流体流动。 在由流体减压和流体保险丝下游的结构部件的弹性收缩导致的减压流体流动期间,保险丝被致动。 在减压流体流动期间,阀构件通过由流体的突然减压引起的压力产生的两个力而从打开位置移动到闭合位置,并且横跨两个可变的,锋利的边缘,粘度不敏感的孔串联设置, 由流动切断和密封表面分开。 由上游孔的压差产生的闭合力是主要的,并且以预定的方式随着关闭构件的位移而增加,允许在相对低的压力差下使用高预负荷和高速率的相对弹簧。 保险丝的密封表面具有有限的对准自由度以允许紧密密封。 保险丝组件包括可手动调节的旁路装置和压力峰值衰减控制。