US 11,719,115 B2
Clearance control structure for a gas turbine engine
Tomasz Edward Berdowski, Warsaw (PL); Ashish Sharma, Munich (DE); Raymond Floyd Martell, Wyoming, OH (US); Piotr Jerzy Kulinski, Warsaw (PL); and Lukasz Maciej Janczak, Warsaw (PL)
Assigned to GENERAL ELECTRIC COMPANY, Schenectady, NY (US); GENERAL ELECTRIC DEUTSCHLAND HOLDING GMBH, Frankfurt (DE); and GENERAL ELECTRIC COMPANY POLSKA SP. Z O.O, Warsaw (PL)
Filed by General Electric Company, Schenectady, NY (US); General Electric Deutschland Holding GmbH, Frankfurt (DE); and General Electric Company Polska Sp. z o.o., Warsaw (PL)
Filed on Dec. 23, 2021, as Appl. No. 17/561,182.
Prior Publication US 2023/0147089 A1, May 11, 2023
Int. Cl. F01D 25/26 (2006.01); F01D 11/18 (2006.01)
CPC F01D 11/18 (2013.01) [F01D 25/26 (2013.01); F05D 2240/11 (2013.01); F05D 2260/38 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gas turbine engine, wherein the engine defines an axial direction co-directional to a centerline axis, a radial direction extended from the centerline axis, and a circumferential direction relative to the centerline axis, the engine comprising:
a first turbine rotor assembly comprising a plurality of first turbine rotor blades extended within a gas flowpath;
a second turbine rotor assembly positioned aft along the gas flowpath of the first turbine rotor assembly, wherein the second turbine rotor assembly is rotatably separate from the first turbine rotor assembly; and
a casing surrounding the first turbine rotor assembly, wherein the casing comprises an outer casing wall extended forward of the first turbine rotor assembly and aft of the first turbine rotor assembly, and wherein the casing comprises a plurality of vanes extended from the outer casing wall and through the gas flowpath aft of the first turbine rotor assembly and forward of the second turbine rotor assembly, and further wherein the casing comprises a plurality of walls forming thermal control rings extended outward along the radial direction from the outer casing wall, and wherein the outer casing wall and the thermal control rings are a unitary, integral structure.