Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Patent
1993-04-06
1994-03-22
Cuda, Irene
Metal working
Method of mechanical manufacture
Prime mover or fluid pump making
29888, 415108, B23P 1500
Patent
active
052953017
ABSTRACT:
The reheat tub in a double-flow steam turbine is provided with additional setback from the rotor buckets by forming a three-part reheat tub construction including first and second discrete diaphragm segments and third inner ring segments. The annular arrays of these segments are dimensioned to enable greater axial spacing between the nozzles and buckets. To refurbish an in-service double-flow turbine, the damaged reheat tub is removed and cut along axial and radial part lines to form discrete first and second diaphragm segments. The diaphragm segment nozzles are then refurbished by adding weld material and machined to the appropriate configuration. Material is added to the downstream and removed from the upstream faces of each diaphragm so that it may be located in the turbine shell similarly as the removed tub, but with the nozzles spaced further axially upstream of the buckets.
REFERENCES:
patent: 4015910 (1977-04-01), Harmon et al.
patent: 4029432 (1977-06-01), Meylan et al.
patent: 4634340 (1987-01-01), Stetter
patent: 4764084 (1988-08-01), Parker et al.
patent: 4776765 (1988-10-01), Sumner et al.
patent: 5024579 (1991-06-01), Groenendaal, Jr. et al.
patent: 5104285 (1992-04-01), Groenendaal, Jr. et al.
"Reducing Solid Particle Erosion Damage in Large Steam Turbines," Sumner et al., GE Turbine Reference Library, 1986.
Cuda Irene
General Electric Company
LandOfFree
Method for minimizing or eliminating solid particle erosion in d does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for minimizing or eliminating solid particle erosion in d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for minimizing or eliminating solid particle erosion in d will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-429257