Fluid handling – With heating or cooling of the system – Circulating fluid in heat exchange relationship
Patent
1977-07-27
1980-10-14
Schwadron, Martin P.
Fluid handling
With heating or cooling of the system
Circulating fluid in heat exchange relationship
251172, F16K 4900, F16K 2500
Patent
active
042275458
ABSTRACT:
A valve for controlling the flow of hot fluids in nuclear reactor plants or similar institutions has a tubular body whose internal surface is welded to an annulus of metallic leaf springs each connected to the outer end of a radially inwardly extending metallic spoke. The inner ends of the spokes are adjustably connected with a metallic sealing ring which is movable axially by a bellows into and from sealing engagement with a plate-like sealing member forming part of a plug-shaped or spherical valving element which is turnable or shiftable between open and closed positions. The bellows is caused to disengage the sealing ring from the sealing member prior to movement of the valving element to open or closed position and to engage the ring with the sealing member when the valving element assumes the open or closed position. That surface of the ring which is movable into sealing engagement with the sealing member has a channel which receives coolant by way of one or more ports in the sealing member and valving element. A stop is provided to limit the extent of movement of the ring in a direction away from the sealing member.
REFERENCES:
patent: 2520288 (1950-08-01), Shand et al.
patent: 2705016 (1955-03-01), Saar
patent: 3062238 (1962-11-01), Boyd
patent: 3209778 (1965-10-01), Flohr
patent: 3388715 (1968-06-01), Ellis
patent: 3575198 (1971-04-01), Ellis
patent: 3794291 (1974-02-01), Suyama
patent: 3916940 (1975-11-01), Allen
patent: 4020864 (1977-05-01), Church
Augsburger Rolf
Kuppka Horst
Zilling Helmut
Chambers A. Michael
Klein, Schanzlin & Becker AG
Kontler Peter K.
Schwadron Martin P.
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