Gas turbine engine recuperator with floating connection
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-007/08
F28F-009/02
F28F-009/26
F28D-009/00
F28D-021/00
F28F-021/08
출원번호
US-0036407
(2011-02-28)
등록번호
US-9394828
(2016-07-19)
발명자
/ 주소
Eleftheriou, Andreas
Menheere, David
Alecu, Daniel
출원인 / 주소
PRATT & WHITNEY CANADA CORP.
대리인 / 주소
Norton Rose Fulbright Canada
인용정보
피인용 횟수 :
1인용 특허 :
18
초록▼
A gas turbine engine recuperator including a plurality of independent arcuate segments, each segment having an inlet connection member designed to sealingly engage a plenum in fluid flow communication with the compressor discharge, and an outlet connection member designed to sealingly engage a plenu
A gas turbine engine recuperator including a plurality of independent arcuate segments, each segment having an inlet connection member designed to sealingly engage a plenum in fluid flow communication with the compressor discharge, and an outlet connection member designed to sealingly engage a plenum containing the combustor. One of the inlet and outlet connection members is a rigid member forming a rigid connection to the respective plenum, and the other of the inlet and outlet connection members includes a flexible member and forms a floating connection to the respective plenum, the floating connection allowing relative movement between the segment and a remainder of the gas turbine engine.
대표청구항▼
1. A gas turbine engine comprising: an outer case containing first and second plenums;a compressor section having a discharge in fluid flow communication with the first plenum;a combustor contained in the second plenum;a turbine section in fluid flow communication with the combustor;an exhaust duct
1. A gas turbine engine comprising: an outer case containing first and second plenums;a compressor section having a discharge in fluid flow communication with the first plenum;a combustor contained in the second plenum;a turbine section in fluid flow communication with the combustor;an exhaust duct in fluid flow communication with the turbine section; anda recuperator, the recuperator including a plurality of independent annular segments, each segment defining: exhaust passages contained in the exhaust duct and providing fluid flow communication between an exhaust inlet and an exhaust outlet, the exhaust inlet and exhaust outlet extending across the exhaust duct with the exhaust inlet being in fluid flow communication with the turbine section,air passages contained in the exhaust duct in heat exchange relationship with the exhaust passages and providing fluid flow communication between an air inlet and an air outlet,an inlet connection member contained in the outer case of the engine, defining the air inlet and sealingly engaging the first plenum to receive pressurized air from the compressor, andan outlet connection member contained in the outer case of the engine, defining the air outlet and sealingly engaging the second plenum containing the combustor, withone of the inlet and outlet connection members defining a rigid connection with the corresponding one of the first and second plenums, and the other of the inlet and outlet connection members defining a floating connection with the corresponding one of the first and second plenums, the other of the inlet and outlet connection members being movable relative to the corresponding one of the first and second plenums about the floating connection along different, non-parallel directions with respect to a central axis of the gas turbine engine, the one of the inlet and outlet connection members defining the only rigid connection between the segment and all elements of the gas turbine engine not forming part of the recuperator. 2. The gas turbine engine as defined in claim 1, wherein each segment of the recuperator is a plate heat exchanger. 3. The gas turbine engine as defined in claim 1, wherein the outlet connection member defines the rigid connection and the inlet connection member defines the floating connection. 4. The gas turbine engine as defined in claim 1, wherein the other of the inlet and outlet connection members includes a flexible duct member rigidly connected to the corresponding one of the first and second plenums. 5. The gas turbine engine as defined in claim 4, wherein the flexible duct member includes two rigid duct portions interconnected by a diaphragm. 6. The gas turbine engine as defined in claim 1, wherein the other of the inlet and outlet connection members includes a duct engaged in an opening of the corresponding one of the first and second plenums, the duct having a flange received in the corresponding one of the first and second plenums and extending over a wall portion of the corresponding one of the first and second plenums which surrounds the opening, and a compressible member compressed between the flange and the wall portion. 7. The gas turbine engine as defined in claim 1, wherein the floating connection allows relative movement between the other of the inlet and outlet connection members and the corresponding one of the first and second plenums along axial and radial directions with respect to the central axis of the gas turbine engine. 8. The gas turbine engine as defined in claim 1, wherein the floating connection allows relative movement between the other of the inlet and outlet connection members and the corresponding one of the first and second plenums along axial and tangential directions with respect to the central axis of the gas turbine engine. 9. The gas turbine engine as defined in claim 1, wherein each segment includes a control surface in contact with a wall of the exhaust duct, the control surface being free to move relative to the wall. 10. The gas turbine engine as defined in claim 1, wherein the engine includes a removable exhaust scroll enclosing at least partially the recuperator within the engine, the inlet and outlet connection members of each segment being removably connected to the corresponding one of the first and second plenums, and each segments being sized such as to be removable from the engine through an opening closed by the exhaust scroll. 11. A recuperator comprising a plurality of independent arcuate segments configured to extend within an exhaust duct of a gas turbine engine, each segment including: exhaust passages providing fluid flow communication between an exhaust inlet and an exhaust outlet, the exhaust inlet being oriented to receive exhaust flow from a turbine of the engine and the exhaust outlet being oriented to deliver the exhaust flow to atmosphere;air passages in heat exchange relationship with the exhaust passages and providing fluid flow communication between an air inlet and an air outlet;an inlet connection member defining the air inlet and being designed to sealingly engage a first plenum in fluid flow communication with a compressor discharge of the gas turbine engine; andan outlet connection member defining the air outlet and being designed to sealingly engage a second plenum containing a combustor of the gas turbine engine; the first and second plenums and the inlet and outlet connection members being contained in an outer case of the gas turbine engine;wherein one of the inlet and outlet connection members is a rigid member forming a rigid connection to the respective plenum, and the other of the inlet and outlet connection members includes a flexible member and forms a floating connection to the respective plenum, each segment of the recuperator being moveable relative to a remainder of the gas turbine engine about the floating connection along different, non-parallel directions with respect to a central axis of the gas turbine engine, the rigid connection of the rigid member to the respective plenum defining the only rigid connection between the segment and all elements of the gas turbine engine not forming part of the recuperator. 12. The recuperator as defined in claim 11, wherein the inlet connection member defines the floating connection. 13. The recuperator as defined in claim 11, wherein the other of the inlet and outlet connection members includes a flexible duct member defining the floating connection. 14. The recuperator as defined in claim 11, wherein the other of the inlet and outlet connection members includes a duct having a flange extending radially outwardly therefrom and at least one a compressible member received around the duct upstream of the flange and sized to be compressed between the flange and a wall of the respective plenum. 15. The recuperator as defined in claim 11, wherein a panel of the segment opposed to the air inlet and the air outlet includes a protrusion for contacting a wall of the exhaust duct.
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이 특허에 인용된 특허 (18)
Kretzinger Karl F. (Simi Valley CA), Annular recuperator.
Peterson Brian G. (Redondo Beach CA) Urciuoli Robert P. (Hermosa Beach CA) Bridgnell David G. (Rolling Hills CA), Stress relief for an annular recuperator.
Karam, Michael Abraham; Donovan, Eric Sean; Krautheim, Michael Stephen; Vetters, Daniel Kent; Chouinard, Donald G., Gas turbine engine with air/fuel heat exchanger.
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