Rotary kinetic fluid motors or pumps – Casing and spaced housing with space vented to working fluid
Reexamination Certificate
2007-11-20
2007-11-20
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
Casing and spaced housing with space vented to working fluid
C415S144000
Reexamination Certificate
active
11235124
ABSTRACT:
Solid particle erosion in a steam turbine is minimized by diverting through holes in appendages of outer rings of the diaphragms, a portion of the steam from the steam flow path thereby bypassing downstream rotating components. The hole through the first stage appendage lies in communication with a passage through a downstream outer ring of a following stage such that the diverted solid particle containing steam may be extracted from the steam flow path and passed to the feed water heater of the turbine. The hole in the second stage appendage diverts steam from between the first and second stages and about the second stage. Solid particle erosion in various regions, i.e., the trailing edge of the stator vanes, along the surfaces of the buckets and in the regions of the cover and its connection with the buckets as well as the sealing devices are thereby minimized.
REFERENCES:
patent: 4615734 (1986-10-01), Spriggs
patent: 4704336 (1987-11-01), Spriggs
patent: 4776765 (1988-10-01), Sumner et al.
patent: 4853014 (1989-08-01), Bloch
patent: 4921546 (1990-05-01), Bloch
patent: 4922937 (1990-05-01), Bloch
patent: 4986309 (1991-01-01), Bellanca
patent: 5249918 (1993-10-01), Knorowski
patent: 5295301 (1994-03-01), Knorowski
patent: 5363603 (1994-11-01), Miller et al.
patent: 6288000 (2001-09-01), Hebsur
patent: 6391811 (2002-05-01), Hebsur
patent: 6605648 (2003-08-01), Johnson et al.
patent: 6644917 (2003-11-01), Zhao et al.
patent: 6679681 (2004-01-01), Burnett et al.
patent: 2003/0194312 (2003-10-01), Burnett et al.
patent: 1273538 (1990-09-01), None
patent: 61031602 (1986-02-01), None
patent: 0524806 (1993-09-01), None
patent: 9207849 (1992-09-01), None
General Electric Company
Look Edward K.
Nixon & Vanderhye PC
White Dwayne J
LandOfFree
Apparatus and methods for minimizing solid particle erosion... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and methods for minimizing solid particle erosion..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and methods for minimizing solid particle erosion... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3850555