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Title: Fast closing valve

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.

Inventors:
 [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
864828
Patent Number(s):
4424825
Application Number:
06/205,397
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fast; closing; valve; provided; protecting; vacuum; particle; accelera; event; air; leakage; provides; axially; symmetrical; passage; avoid; disturbance; partical; beam; normal; operation; enables; rapid; tight; closure; beam-carrying; pipe; ball; 30; rotate; position; bore; 32; aligned; line; seal; 38; flexibly; sealed; move; tightly; rotated; assure; retard; rotation; rapidly; conductive; arm; 40; fixed; discharge; capacitor; bank; coils; 44; 45; located; adjacent; capacitor bank; beam pipe; normal operation; located adjacent; axially symmetric; ball valve; closing valve; valve provides; particle accelera; /137/250/251/

Citation Formats

Hanson, Clark L. Fast closing valve. United States: N. p., 1984. Web.
Hanson, Clark L. Fast closing valve. United States.
Hanson, Clark L. Tue . "Fast closing valve". United States. https://www.osti.gov/servlets/purl/864828.
@article{osti_864828,
title = {Fast closing valve},
author = {Hanson, Clark L},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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