Fast closing valve

Details Fast closing valve Fast closing valve

1980-11-10

1984-01-10

Rosenthal, Arnold

Fluid handling

Processes

251129, 251133, 251136, 251170, 251188, 250430, F16K 520, F16K 3104

Patent

active

044248253

ABSTRACT:
A valve is provided for protecting the high vacuum of a particle accelera in the event of air leakage, wherein the valve provides an axially symmetrical passage to avoid disturbance of the partical beam during normal operation, and yet enables very rapid and tight closure of the beam-carrying pipe in the event of air leakage. The valve includes a ball member (30) which can rotate between a first position wherein a bore (32) in the member is aligned with the beam pipe, and a second position out of line with the pipe. A seal member (38) is flexibly sealed to the pipe, and has a seal end which can move tightly against the ball member after the bore has rotated out of line with the pipe, to thereby assure that the seal member does not retard rapid rotation of the ball valve member. The ball valve member can be rapidly rotated by a conductive arm (40) fixed to it and which is rotated by the discharge of a capacitor bank through coils (44, 45) located adjacent to the arm.

REFERENCES:
patent: 2973180 (1961-02-01), Morgan
patent: 3061265 (1962-10-01), Schiegries
patent: 3257094 (1966-06-01), Vischer, Jr.
patent: 3387748 (1968-06-01), Brenchley
patent: 3485475 (1969-12-01), Moore et al.
patent: 3653631 (1972-04-01), Hurst
patent: 4215722 (1980-08-01), Sigmon

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