Thermally-activated clearance reduction for a steam turbine

Details Thermally-activated clearance reduction for a steam turbine Thermally-activated clearance reduction for a steam turbine

2008-10-29

2011-11-08

Nhu, David (Department: 2895)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

C415S173300, C415S114000, C415S134000

Reexamination Certificate

active

08052380

ABSTRACT:
A thermally-activated flow clearance reduction for a steam turbine is disclosed. In one embodiment a gap closure component is located about a rotary component and a stationary component of the steam turbine. A temperature differential activates the gap closure component to seal or reduce the radial clearance of the steam flow path between the rotary component and the stationary component.

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Blum, Notice of Allowance and Fee(s) Due for U.S. Appl. No. 12/260,573 dated Aug. 3, 2011, 13 pages.

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