Fluid handling – With heating or cooling of the system – Circulating fluid in heat exchange relationship
Patent
1977-07-27
1980-04-01
Cline, William R.
Fluid handling
With heating or cooling of the system
Circulating fluid in heat exchange relationship
251172, 137334, F16K 4900, F16K 2500, G21D 102
Patent
active
041956559
ABSTRACT:
A ball valve for controlling the flow of hot fluids in nuclear reactor plants has a tubular body for a spherical valving element which is flanked by two axially movable seats and is turnable between open and closed positions. Discrete bellows are provided to move the seats away from the valving element before the latter is set in motion and to urge the seats against the valving element when the latter assumes and dwells in the newly selected position. The body and the valving element define a main cooling chamber which accommodates the seats and receives pressurized coolant. Such coolant flows into the fluid-conveying passage of the body by way of a clearance between cylindrical heat-insulating layers at both sides of the valving element and the periphery of the valving element. Additional cooling chambers which are provided between the bellows and the insulating layers communicate with the clearance via gaps between the seats and the respective insulating layers. The valving element is cooled from within and admits coolant into channels machined into those surfaces of the seats which are movable into engagement with the valving element. The latter admits coolant into the channels via ports which create turbulence when the seats are retracted.
REFERENCES:
patent: 267234 (1882-11-01), Long
patent: 2029777 (1936-02-01), Kinnaird
patent: 3062238 (1962-11-01), Boyd
patent: 3136330 (1964-06-01), Dowling
patent: 3319423 (1967-05-01), Caraher
patent: 3487849 (1970-01-01), Vietorisz
patent: 3580539 (1971-05-01), Scoy
patent: 3916940 (1975-11-01), Allen
Augsburger Rolf
Kuppka Horst
Zilling Helmut
Chambers A. Michael
Cline William R.
Klein, Schanzlin & Becker Aktiengesellschaft
Kontler Peter K.
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