Fast opening valve

Details Fast opening valve Fast opening valve

1986-05-06

1988-03-22

Michalsky, Gerald A.

Fluid handling

Larner-johnson type valves; i.e., telescoping internal valve...

Line condition change responsive

137221, 137492, 251 28, F16K 31124

Patent

active

047321890

ABSTRACT:
A fast opening plug valve especially for release of high pressure gas. The plug has an internal chamber and is held in the closed position by the pressure of gas within this chamber which acts on a fixed wall. The opening stroke is driven by valve inlet pressure upon release of gas from the plug chamber to a dump chamber. Flow from the plug chamber to the dump chamber is choked towards the end of the valve opening cycle to decelerate the plug. Plug acceleration at the start of the opening cycle is commenced prior to opening to minimize the opening period. Release of pressure from the plug chamber may be initiated by action of a slide valve and linked to rise of valve inlet pressure. The valve has application in wind tunnels.

REFERENCES:
patent: 2226031 (1940-12-01), Wahl et al.
patent: 2919714 (1960-01-01), Mrazek
patent: 3415269 (1968-12-01), Salerno
patent: 3515165 (1970-06-01), Zadoo

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