Power plants – Reaction motor – Method of operation
Patent
1980-10-01
1984-12-11
Croyle, Carlton R.
Power plants
Reaction motor
Method of operation
602261, 60 3975, 415116, 415138, F02C 718
Patent
active
044870167
ABSTRACT:
A structure and method for providing cooling fluids from a compression section 10 to a turbine section 14 of an axially flow rotary machine is disclosed. Various construction details and steps of the method enable the machine to minimize the effect that unscheduled variations in the temperature of the cooling fluids have on operating clearances in the turbine section. These unscheduled variations may result from changes in ambient temperature and component deterioration. An internal cooling fluid from the discharge region 52 of the rearmost compressor 18 is used to modulate the flow of a second fluid impinged on the exterior of the outer case 24 for controlling the clearance between an array of rotor blades 26 and a coolable stator shroud 64 spaced radially outwardly of the rotor blades. In one embodiment, a valve 32 for modulating the flow of the second fluid has at least one thermostatic bimetallic spring 86 for transducing a change in temperature into a displacement. The displacement changes the flow area A.sub.f between a valve head 82 and a conical seat 80 in the conduit 30 for the second fluid through the valve 32.
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Griffin James G.
Schwarz Frederick M.
Croyle Carlton R.
Fleischhauer Gene D.
Simenauer Jeffrey A.
United Technologies Corporation
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