Steam turbine and rotating blade

Details Steam turbine and rotating blade Steam turbine and rotating blade

2007-07-16

2011-11-01

Kershteyn, Igor (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

C416S248000

Reexamination Certificate

active

08047797

ABSTRACT:
A blade is mountable to a disc. The blade comprises a blade platform and a blade root extending from the blade platform. The blade root comprises a first hook and a second hook, a first neck between the first hook and the blade platform, and a second neck between the first hook and the second hook. Each hook comprises a contact surface and a non-contact surface. An angle between each contact surface and each non-contact surface is optimized to reduce local stresses.

REFERENCES:
patent: 2753149 (1956-07-01), Kurti
patent: 4191509 (1980-03-01), Leonardi
patent: 4824328 (1989-04-01), Pisz et al.
patent: 5147180 (1992-09-01), Johnson
patent: 5480285 (1996-01-01), Patel et al.
patent: 5554005 (1996-09-01), Nguyen
patent: 6575700 (2003-06-01), Arai et al.
patent: 7794208 (2010-09-01), Suzuki et al.

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