Fluid handling – With heating or cooling of the system – Air heated or cooled
Patent
1995-09-20
1997-10-21
Chambers, A. Michael
Fluid handling
With heating or cooling of the system
Air heated or cooled
137341, 251305, 251367, 251214, F16K 4900
Patent
active
056785941
ABSTRACT:
A butterfly valve for controlling the flow of high temperature fluids includes a valve body defining a flow path and having opposed portals. Cover plates are mounted over each of the portals and have a conical shaped wall extending inward to a bearing support member. A flow modulator is disposed between the cover plates and is mounted to the bearing support members by ceramic bearings. The modulator has a plate disposed in said flow path which is bounded by a leading edge, a trailing edge, and two disk flanges. Each of the disk flanges has a labyrinth seal in sealing engagement with an inner wall of said valve body. Nozzles are mounted to said cover plate to deliver cooling air flow to the bearings. A constant cooling flow rate is maintained by appropriately sized circumferential chambers adjacent each of the labyrinth seals.
REFERENCES:
patent: 2900995 (1959-08-01), Dickerson et al.
patent: 4261385 (1981-04-01), Worley
patent: 4353388 (1982-10-01), Isoyama et al.
Allied-Signal Inc.
Chambers A. Michael
Holden Jerry J.
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