Method for reducing steady state rotor blade tip clearance in a

Details Method for reducing steady state rotor blade tip clearance in a Method for reducing steady state rotor blade tip clearance in a

1995-11-30

1997-09-16

Kwon, John T.

Rotary kinetic fluid motors or pumps

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

Between blade edge and static part

4151731, F01D 520

Patent

active

056673582

ABSTRACT:
Disclosed is a method for improving the efficiency of a land-based gas turbine by controlling the blade tip clearance. The diameter of the outer gas path casing is increased during transient periods. The outer casing is heated during transient periods to increase its diameter and the associated blade tip clearance thereby allowing for a reduced cold tip clearance and and conseuently steady-state running clearance.

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patent: 5281085 (1994-01-01), Lenahan et al.
patent: 5295787 (1994-03-01), Leonard et al.

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