Fluid admission valve structure

Details Fluid admission valve structure Fluid admission valve structure

1982-01-18

1984-06-26

Nilson, Robert G.

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

415155, F16K 100

Patent

active

044560320

ABSTRACT:
In an admission valve structure for a turbine all of the valves except the first opening one are spring biased closed, when seated. Because of the sequential opening of the valves, the valve closing bias of each spring acts as an opening bias relative to all earlier opening valves until that valve is opened. The combined spring forces act to open at least some of the valves thus permitting the governor to attain minimum speed once the throttle valve is opened in the steam header.

REFERENCES:
patent: 2192193 (1940-03-01), Johnson
patent: 2385537 (1945-09-01), Penthenny
patent: 3322153 (1967-05-01), Rankin
patent: 3580691 (1971-05-01), Czuszak
patent: 3625241 (1971-12-01), Shields
patent: 3753449 (1973-08-01), Nelson et al.
patent: 3763894 (1973-10-01), Meyer

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