Fluid handling – Systems – Sequentially progressive opening or closing of plural valves
Patent
1974-01-09
1976-05-25
Schwadron, Martin P.
Fluid handling
Systems
Sequentially progressive opening or closing of plural valves
251 29, F16K 1710
Patent
active
039586006
ABSTRACT:
In a combined starting and quick shut-off mechanism, for steam and gas turbines, having a valve controlled by pressure medium by means of an auxiliary valve the valve has a secondary control piston and a counterpressure closure upon opening as well as an adjustable damping which is adjustable by means of a flow cascade from the inlet side of the valve to an outlet chamber, controlled by the auxiliary valve, at the end of the valve spindle, from the inlet side of the valve to the pressure chamber of the valve piston here exists, via a radial piston chamber, stepped in its outer diameter, of the secondary control piston a further flow passage can be provided in the interior of the valve piston, which passage can be shut-off at the step of the radial piston chamber by means of an annularly projecting control collar of the secondary control piston in the open position thereof.
REFERENCES:
patent: 2622612 (1952-12-01), Manhartsberger
patent: 3100503 (1963-08-01), Tennis
patent: 3125319 (1964-03-01), Arbogast et al.
patent: 3182681 (1965-05-01), Gallo
patent: 3478776 (1969-11-01), Royer
patent: 3545484 (1970-12-01), Allen
Miller Robert J.
Schwadron Martin P.
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