Hydraulic fuse valve

Details Hydraulic fuse valve Hydraulic fuse valve

1982-09-03

1984-08-14

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137462, 1375122, 1375992, F16K 1730

Patent

active

044650930

ABSTRACT:
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.

REFERENCES:
patent: 484526 (1892-10-01), Valentine
patent: 547506 (1895-10-01), Sleigh et al.
patent: 1258114 (1918-03-01), Hayward
patent: 2925826 (1960-02-01), Streeter
patent: 2929403 (1960-03-01), Streeter
patent: 3085589 (1963-04-01), Sands
patent: 3661175 (1972-05-01), Tillman
patent: 3677605 (1972-07-01), Matsumoto
patent: 3735777 (1973-05-01), Katzer et al.

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