초록 ▼

A fluid fuse operable to shut off fluid flow upon rupture of fluid conducting line downstream of the fuse. The fuse is actuated by two forces generated by pressure differential caused by sudden decompression of the fluid and developed across two variable, sharp edge, viscosity insensitive orifices,

A fluid fuse operable to shut off fluid flow upon rupture of fluid conducting line downstream of the fuse. The fuse is actuated by two forces generated by 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.

대표청구항 ▼

A fluid fuse valve comprising a housing having a bore provided with first and second converging surface means, fluid shut-off means slidably mounted in respect to said bore, said fluid shut-off means having first sharp edge means operable to form first variable orifice means in respect to said first

A fluid fuse valve comprising a housing having a bore provided with first and second converging surface means, fluid shut-off means slidably mounted in respect to said bore, said fluid shut-off means having first sharp edge means operable to form first variable orifice means in respect to said first converging surface means, second sharp edge means on said fluid shut-off means operable to form second variable orifice means in respect to said second converging surface means, converging shut-off means interposed between said first and said second sharp edge means, and spring biasing means operable to oppose forces developed on said fluid shut-off means be flow of fluid through said fuse valve.