Diaphragm screw support for and method of supporting a turbine diaphragm
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0949817
(2001-09-12)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
6 인용 특허 :
2 |
초록
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A system for supporting bolted upper and lower diaphragms to one another in an outer housing of a turbine includes support screws threaded into bores adjacent opposite sides of the lower shell. The head of each support screw has a threaded bore receiving a set screw. The set screw has a length equal
A system for supporting bolted upper and lower diaphragms to one another in an outer housing of a turbine includes support screws threaded into bores adjacent opposite sides of the lower shell. The head of each support screw has a threaded bore receiving a set screw. The set screw has a length equal to the depth of the slot in which the head resides in the lower shell, minus a small clearance. With the diaphragms supported by the engagement of the set screw at the lower end with an abutment at the bottom of the slot, the clearance enables the diaphragms to move vertically upwardly, limited by the clearance distance.
대표청구항
▼
A system for supporting bolted upper and lower diaphragms to one another in an outer housing of a turbine includes support screws threaded into bores adjacent opposite sides of the lower shell. The head of each support screw has a threaded bore receiving a set screw. The set screw has a length equal
A system for supporting bolted upper and lower diaphragms to one another in an outer housing of a turbine includes support screws threaded into bores adjacent opposite sides of the lower shell. The head of each support screw has a threaded bore receiving a set screw. The set screw has a length equal to the depth of the slot in which the head resides in the lower shell, minus a small clearance. With the diaphragms supported by the engagement of the set screw at the lower end with an abutment at the bottom of the slot, the clearance enables the diaphragms to move vertically upwardly, limited by the clearance distance. sh seal. 10. The annular turbine seal assembly of claim 7, wherein said at least one abradable portion has a radial distance in a range between about 0.5 mm and about 5 mm. 11. The annular turbine seal assembly of claim 7, wherein said at least one abradable portion has a width equal to said arcuate seal carrier segment width. 12. The annular turbine seal assembly of claim 7, wherein said at least one abradable portion has an arcuate length equal to said arcuate seal carrier segment length. 13. The annular turbine seal assembly of claim 7, wherein said spring comprises a leaf spring. 14. The annular turbine seal assembly of claim 7, wherein said at least one spring comprises a plurality of springs, each of said springs being disposed on a respective one of said arcuate seal carrier segments. 15. The annular turbine seal assembly of claim 7, wherein said spring is disposed on a plurality of said arcuate seal carrier segments. 16. The annular turbine seal assembly of claim 7, wherein said abradable portion comprises NiCrAl and clay. 17. The annular turbine seal assembly of claim 16, wherein said clay comprises bentonite. 18. The annular turbine seal assembly of claim 7, wherein said abradable portion comprises nickel and graphite. 19. The annular turbine seal assembly of claim 7, wherein said abradable portion comprises stainless steel. 20. The annular turbine seal assembly of claim 7, wherein said abradable portion comprises chromium and aluminum and least one member of the group consisting of yttrium, iron, nickel and cobalt. 21. The annular turbine seal assembly of claim 7, wherein said abradable portion comprises a nickel based alloy. 22. An annular turbine seal assembly, for disposition in a turbine between a rotatable component having an axis of rotation and a turbine housing about said axis, said annular turbine seal assembly comprising: a plurality of abradable seals, each of said abradable seals comprising an arcuate seal carrier segment and an abradable portion secured to said arcuate seal carrier segment, wherein said abradable seal comprises at least one brush seal; and at least one spring disposed so as to exert a force to maintain said abradable seal disposed adjacent to said rotatable component during rotation. 23. An annular turbine seal assembly, for disposition in a turbine between a rotatable component having an axis of rotation and a turbine housing about said axis, said annular turbine seal assembly comprising: a plurality of abradable seals, each of said abradable seals comprising an arcuate seal carrier segment and an abradable portion secured to said arcuate seal carrier segment; and at least one spring disposed so as to exert a force to maintain said abradable seal disposed adjacent to said rotatable component during rotation, wherein said spring comprises a coil spring. 24. An annular turbine seal assembly, for disposition in a turbine between a rotatable component having an axis of rotation and a turbine housing about said axis, said annular turbine seal assembly comprising: a plurality of abradable seals, each of said abradable seals comprising an arcuate seal carrier segment and an abradable portion secured to said arcuate seal carrier segment; and at least one spring disposed so as to exert a force to maintain said abradable seal disposed adjacent to said rotatable component during rotation, wherein said spring is disposed on an entirety of said arcuate seal carrier segments. 25. An annular turbine seal assembly, for disposition in a turbine between a rotatable component having an axis of rotation and a turbine housing about said axis, said annular turbine seal assembly comprising: a plurality of abradable seals, each of said abradable seals comprising an arcuate seal carrier segment and an abradable portion secured to said arcuate seal carrier segment, wherein said abradable portion comprises CoNiCrAlY and further comprises material selected from the group consisting of hexagon
이 특허에 인용된 특허 (2)
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Leger Donald R. (Westminster MA) Clifford Peter P. (Leominster MA) Matson William N. (Fitchburg MA), Diaphragm support.
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Andrew John Tomko, Interchangeable turbine diaphragm halves and related support system.
이 특허를 인용한 특허 (6)
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Sankolli, Prashant Prabhakar; Anderson, James Peter; Mortzheim, Jason Paul, Adjustable support apparatus for steam turbine nozzle assembly.
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Schaus, Carl Joseph; Burdgick, Steven Sebastian; Werther, Dominick Joseph, Alignment member for steam turbine nozzle assembly.
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Burdgick, Steven Sebastian; Sankolli, Prashant Prabhakar; Werther, Dominick Joseph, Support bar for steam turbine nozzle assembly.
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Burdgick, Steven Sebastian; Anderson, James Peter; Porter, Christopher Donald, Support bar for turbine diaphragm that facilitates reduced maintenance cycle time and cost.
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Fretwell, Richard M., Torque pin for adjusting position of blade ring relative to rotor in a gas turbine engine.
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Van Heusden, Gary S.; Tartibi, Mehrzad, Wear minimization system for a compressor diaphragm.
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