Fast closing valve

Patent · 10 January 1984

OSTI ID:864828

Hanson, Clark L ^[1]

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1. Livermore, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4424825
• Application Number: 06/205,397
• OSTI ID: 864828
• Country of Publication: United States
• Language: English

Related Subjects

/137/250/251/
30
32
38
40
44
45
accelera
adjacent
air
aligned
arm
assure
avoid
axially
axially symmetric
ball
ball valve
bank
beam
beam pipe
beam-carrying
bore
capacitor
capacitor bank
closing
closing valve
closure
coils
conductive
discharge
disturbance
enables
event
fast
fixed
flexibly
leakage
line
located
located adjacent
move
normal
normal operation
operation
partical
particle
particle accelera
passage
pipe
position
protecting
provided
provides
rapid
rapidly
retard
rotate
rotated
rotation
seal
sealed
symmetrical
tight
tightly
vacuum
valve
valve provides