IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0611241
(2009-11-03)
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등록번호 |
US-8376697
(2013-02-19)
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발명자
/ 주소 |
- Wiebe, David J.
- Wessell, Brian J.
- Ebert, Todd
- Beeck, Alexander
- Liang, George
- Marussich, Walter H.
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출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
18 인용 특허 :
13 |
초록
▼
A gas turbine includes forward and aft rows of rotatable blades, a row of stationary vanes between the forward and aft rows of rotatable blades, an annular intermediate disc, and a seal housing apparatus. The forward and aft rows of rotatable blades are coupled to respective first and second portion
A gas turbine includes forward and aft rows of rotatable blades, a row of stationary vanes between the forward and aft rows of rotatable blades, an annular intermediate disc, and a seal housing apparatus. The forward and aft rows of rotatable blades are coupled to respective first and second portions of a disc/rotor assembly. The annular intermediate disc is coupled to the disc/rotor assembly so as to be rotatable with the disc/rotor assembly during operation of the gas turbine. The annular intermediate disc includes a forward side coupled to the first portion of the disc/rotor assembly and an aft side coupled to the second portion of the disc/rotor assembly. The seal housing apparatus is coupled to the annular intermediate disc so as to be rotatable with the annular intermediate disc and the disc/rotor assembly during operation of the gas turbine.
대표청구항
▼
1. Sealing apparatus in a gas turbine comprising forward and aft rows of rotatable blades coupled to a disc/rotor assembly and a row of stationary vanes positioned between the forward and aft rows of rotatable blades, the sealing apparatus comprising: an annular intermediate disc coupled to the disc
1. Sealing apparatus in a gas turbine comprising forward and aft rows of rotatable blades coupled to a disc/rotor assembly and a row of stationary vanes positioned between the forward and aft rows of rotatable blades, the sealing apparatus comprising: an annular intermediate disc coupled to the disc/rotor assembly so as to be rotatable with the disc/rotor assembly during operation of the gas turbine;seal housing apparatus coupled to said annular intermediate disc so as to be rotatable with said annular intermediate disc and the disc/rotor assembly during operation of the gas turbine, said seal housing apparatus comprising: a leg structure extending radially outwardly from said annular intermediate disc toward the row of stationary vanes, said leg structure including a first end portion coupled to said annular intermediate disc and a second end portion spaced apart from said first end portion in a radial direction; anda base member coupled to said second end portion of said leg structure, said base member extending generally axially between the forward and aft rows of rotatable blades and positioned adjacent to the row of stationary vanes, said base member having a first end portion proximate to the forward row of rotatable blades and a second end portion proximate to the aft row of rotatable blades;a first seal retainer plate structure associated with the forward row of rotatable blades and having a generally axially extending first seal structure; anda first seal member associated with said first seal structure and said first end portion of said base member so as to seal a first gap between said first seal structure and said first end portion of said base member. 2. The sealing apparatus as set out in claim 1, further comprising: a second seal retainer plate structure associated with the aft row of rotatable blades and having a generally axially extending second seal structure; anda second seal member associated with said second seal structure and said second end portion of said base member so as to seal a second gap between said second seal structure and said second end portion of said base member. 3. The sealing apparatus as set out in claim 2, wherein: said first seal member comprises a generally radially extending member having first and second end portions, said first end portion of said first seal member affixed to one of said first seal structure and said first end portion of said base member, and said second end portion of said first seal member received in a slot formed in the other of said first seal structure and said first end portion of said base member; andsaid second seal member comprises a generally radially extending member having first and second end portions, said first end portion of said second seal member affixed to one of said second seal structure and said second end portion of said base member, and said second end portion of said second seal member received in a slot formed in the other of said second seal structure and said second end portion of said base member. 4. The sealing apparatus as set out in claim 2, wherein: said first seal member comprises a generally axially extending member having first and second end portions, said first end portion of said first seal member affixed to said first seal structure, and said second end portion of said first seal member abutting a radially inner surface of said first end portion of said base member; andsaid second seal member comprises a generally axially extending member having first and second end portions, said first end portion of said second seal member affixed to said second seal structure, and said second end portion of said second seal member abutting a radially inner surface of said second end portion of said base member. 5. The sealing apparatus as set out in claim 1, wherein said base member comprises a generally radially facing surface that faces the row of stationary vanes, said generally radially facing surface comprising first sealing structure for sealing a gap between the row of stationary vanes and said base member. 6. The sealing apparatus as set out in claim 5, wherein said first sealing structure comprises one of an abrasive layer, labyrinth teeth and honeycomb seal material. 7. The sealing apparatus as set out in claim 5, wherein said first sealing structure is adapted to cooperate with second sealing structure provided on radially inner surfaces of each of the vanes of the row of stationary vanes for sealing said gap between the row of stationary vanes and said base member. 8. The sealing apparatus as set out in claim 5, wherein said first end portion of said leg structure includes a first foot member extending generally axially from a first axially facing surface of said leg structure, wherein said first foot member is: radially inserted through a radially facing slot formed in said annular intermediate disc; andcircumferentially displaced so as to not be circumferentially aligned with said radially facing slot formed in said annular intermediate disc. 9. The sealing apparatus as set out in claim 8, wherein said first end portion of said leg structure includes a second foot member extending generally axially from a second axially facing surface of said leg structure opposed from said first axially facing surface, wherein said second foot member is: radially inserted through said radially facing slot formed in said annular intermediate disc; andcircumferentially displaced so as to not be circumferentially aligned with said radially facing slot formed in said annular intermediate disc. 10. The sealing apparatus as set out in claim 1, wherein said leg structure comprises first and second circumferentially spaced leg portions that each extends radially outwardly from said annular intermediate disc toward said base member. 11. A gas turbine comprising: forward and aft rows of rotatable blades coupled to a disc/rotor assembly, said forward row of rotatable blades associated with a first portion of said disc/rotor assembly, and said aft row of rotatable blades associated with a second portion of said disc/rotor assembly;a row of stationary vanes positioned between said forward and aft rows of rotatable blades; andan annular intermediate disc coupled to said disc/rotor assembly so as to be rotatable with said disc/rotor assembly during operation of the gas turbine, said annular intermediate disc including: a forward side coupled to said first portion of said disc/rotor assembly, said forward side including a first set of axially extending mating teeth that engage with a second set of axially extending mating teeth of said first portion of said disc/rotor assembly so as to prevent relative circumferential movement between said annular intermediate disc and said first portion of said disc/rotor assembly; andan aft side coupled to said second portion of said disc/rotor assembly, said aft side including a third set of axially extending mating teeth that engage with a fourth set of axially extending mating teeth of said second portion of said disc/rotor assembly so as to prevent relative circumferential movement between said annular intermediate disc and said second portion of said disc/rotor assembly; anda seal housing apparatus coupled to said annular intermediate disc so as to be rotatable with said annular intermediate disc and said disc/rotor assembly during operation of the gas turbine. 12. The gas turbine as set out in claim 11, wherein said seal housing apparatus comprises: a leg structure extending radially outwardly from said annular intermediate disc toward said row of stationary vanes, said leg structure including a first end portion coupled to said annular intermediate disc and a second end portion spaced apart from said first end portion in a radial direction; anda base member coupled to said second end portion of said leg structure, said base member extending generally axially between said forward and aft rows of rotatable blades and positioned adjacent to said row of stationary vanes, said base member having a first end portion proximate to said forward row of rotatable blades and a second end portion proximate to said aft row of rotatable blades. 13. The gas turbine as set out in claim 12, further comprising: a first seal retainer plate structure associated with said forward row of rotatable blades and having a generally axially extending first seal structure;a first seal member associated with said first seal structure and said first end portion of said base member so as to seal a first gap between said first seal structure and said first end portion of said base member;a second seal retainer plate structure associated with said aft row of rotatable blades and having a generally axially extending second seal structure; anda second seal member associated with said second seal structure and said second end portion of said base member so as to seal a second gap between said second seal structure and said second end portion of said base member. 14. The gas turbine as set out in claim 12, wherein said base member comprises a generally radially facing surface that faces the row of stationary vanes, said generally radially facing surface comprising first sealing structure for sealing a gap between said row of stationary vanes and said base member, wherein said first sealing structure is adapted to cooperate with second sealing structure provided on radially inner surfaces of each of said vanes of said row of stationary vanes for sealing said gap between said row of stationary vanes and said base member. 15. The gas turbine as set out in claim 12, wherein said first end portion of said leg structure includes: a first foot member extending generally axially from a first axially facing surface of said leg structure, wherein said first foot member is: radially inserted through a radially facing slot formed in said annular intermediate disc; andcircumferentially displaced so as to not be circumferentially aligned with said radially facing slot formed in said annular intermediate disc; anda second foot member extending generally axially from a second axially facing surface of said leg structure opposed from said first axially facing surface, wherein said second foot member is: radially inserted through said radially facing slot formed in said annular intermediate disc; andcircumferentially displaced so as to not be circumferentially aligned with said radially facing slot formed in said annular intermediate disc. 16. Sealing apparatus in a gas turbine comprising forward and aft rows of rotatable blades coupled to a disc/rotor assembly and a row of stationary vanes positioned between the forward and aft rows of rotatable blades, the sealing apparatus comprising: an annular intermediate disc coupled to the disc/rotor assembly so as to be rotatable with the disc/rotor assembly during operation of the gas turbine;seal housing apparatus coupled to said annular intermediate disc so as to be rotatable with said annular intermediate disc and the disc/rotor assembly during operation of the gas turbine, said seal housing apparatus comprising: a leg structure comprising first and second circumferentially spaced apart leg portions that each extends radially outwardly from said annular intermediate disc toward the row of stationary vanes, said leg structure including a first end portion coupled to said annular intermediate disc and a second end portion spaced apart from said first end portion in a radial direction; anda base member coupled to said second end portion of said leg structure, said base member extending generally axially between the forward and aft rows of rotatable blades and positioned adjacent to the row of stationary vanes, said base member having a first end portion proximate to the forward row of rotatable blades and a second end portion proximate to the aft row of rotatable blades. 17. The sealing apparatus as set out in claim 16, wherein said base member comprises a generally radially facing surface that faces the row of stationary vanes, said generally radially facing surface comprising first sealing structure for sealing a gap between the row of stationary vanes and said base member. 18. The sealing apparatus as set out in claim 17, wherein said first sealing structure is adapted to cooperate with second sealing structure provided on radially inner surfaces of each of the vanes of the row of stationary vanes for sealing said gap between the row of stationary vanes and said base member. 19. The sealing apparatus as set out in claim 16, wherein said first end portion of said leg structure includes: a first foot member extending generally axially from a first axially facing surface of said leg structure, wherein said first foot member is: radially inserted through a radially facing slot formed in said annular intermediate disc; andcircumferentially displaced so as to not be circumferentially aligned with said radially facing slot formed in said annular intermediate disc; anda second foot member extending generally axially from a second axially facing surface of said leg structure opposed from said first axially facing surface, wherein said second foot member is: radially inserted through said radially facing slot formed in said annular intermediate disc; andcircumferentially displaced so as to not be circumferentially aligned with said radially facing slot formed in said annular intermediate disc. 20. The sealing apparatus as set out in claim 16, further comprising: a first seal retainer plate structure associated with said forward row of rotatable blades and having a generally axially extending first seal structure;a first seal member associated with said first seal structure and said first end portion of said base member so as to seal a first gap between said first seal structure and said first end portion of said base member;a second seal retainer plate structure associated with said aft row of rotatable blades and having a generally axially extending second seal structure; anda second seal member associated with said second seal structure and said second end portion of said base member so as to seal a second gap between said second seal structure and said second end portion of said base member.
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