Means and method for reducing solid particle erosion in turbines

Details Means and method for reducing solid particle erosion in turbines Means and method for reducing solid particle erosion in turbines

1985-07-29

1988-10-11

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

415181, F01D 514

Patent

active

047767650

ABSTRACT:
Applicants have identified and unexpected mechanism which contributes to solid particle erosion of the trailing edge of spaced apart aerodynamically shaped nozzle partitions in an axial fluid flow turbine. Particles entrained in the fluid flow pass through passages between nozzle partitions, strike rotating buckets and rebound upstream to impinge upon the suction side of the nozzle partitions in the trailing edge region. Accordingly, a nozzle partition includes a protection device disposed over at least a portion of the suction side of the nozzle partition, preferably from the trailing edge to the throat, for preventing solid particle erosion of the partition.

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patent: 4492522 (1985-01-01), Rossmann et al.
patent: 4563801 (1986-01-01), Schill et al.
"Reducing Solid Particle Erosion Damage in Large Steam Turbines" W. J. Sumner, J. H. Vogan, R. J. Lindinger. Presented at American Power Conference, Apr. 22-24, 1985, Chicago, Ill.
"Recent Advances in Improving Turbine-Generator Availability and Performance"-R. C. Spencer, Presented at 12th Energy Technology Conference and Exposition, Mar. 25-27, Washington, D.C.

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