Gas turbine moving blade

Details Gas turbine moving blade Gas turbine moving blade

1997-05-22

1999-09-07

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416 96R, F01D 518

Patent

active

059476877

ABSTRACT:
A movable gas turbine blade includes a platform (10) which is provided with a groove (15). The groove is located on a blade trailing side of the platform. Also, the groove is rounded and has a depth which does not enter a stress line of the platform caused by a load on the blade. The groove functions to suppress a high thermal stress arising at a connection portion of a blade trailing edge and the platform of the gas turbine air cooled moving blade during unsteady (start and stop) operation of the turbine.

REFERENCES:
patent: 5348446 (1994-09-01), Lee et al.
patent: 5387086 (1995-02-01), Frey et al.
patent: 5536143 (1996-07-01), Jacala et al.
patent: 5695322 (1997-12-01), Jacobson et al.

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