Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part
Patent
1996-05-06
1998-04-07
Kwon, John T.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
277 53, 277215, F04D 2908
Patent
active
057356670
ABSTRACT:
The invention pertains to a method and apparatus for minimizing the leakage of working fluid through the fluid leakage path of a turbine seal. The invention may be described in general terms as producing from rotary motion of the working fluid a region of lowered pressure in the working fluid in a portion of the leakage path adjacent a high pressure side of a sealing ring of the seal. This function may be performed by producing and shedding vortices in the working fluid at one or more points about the circumference of the sealing ring. This function may be accomplished by providing a sealing ring having a tooth portion provided in one or more tooth segments, portions of one or more trailing edges of the tooth segments extending outward in a common direction.
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William P. Sanders, "Turbine Steam Path Engineering for Operations and Maintenance Staff," Chapter 11, pp. 11.1-11.35, Course Notes (Dec. 1988).
Mitola Anthony F.
Sanders William P.
Innovative Technology, L.L.C.
Kwon John T.
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