US3642383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for holding together a turbine rotor and other aligned members of a gas turbine
Assignee: Kongsberg Gruppen ASA
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Filing: 1969-11-25
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Granted: 1972-02-15
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Expires: 1989-11-25
Abstract
Abstract The invention comprises an improved design of a radial gas turbine assembly that is held together by a bolt secured to the turbine rotor and extending through a bore in members aligned with the rotor, the bolt having no centering contact with the walls of the bore, at least in the portion adjacent the turbine rotor. The connection between the bolt and the turbine rotor comprises a hollow sleeve of a heat resistant material that is a relatively poor conductor of heat, said sleeve having a clearance with respect to the bore in the order of 0.05 mm. The sleeve is connected to the bolt and to a pin protruding from the turbine rotor in such a way that the ends of the pin and the bolt respectively are kept a substantial distance apart.
Inventors
- 👤 Tore Anton Andvig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:23
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/025; F01D5/06; F01D5/066; F16; F16D; F16D1/00; F16D1/06; F16D1/076
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
A turbine rotor assembly comprising a turbine rotor and a compressor rotor connected in a force-transmitting relationship; said compressor rotor comprising a hub having a shaft portion, said hub and shaft portion having an axial bore therethrough; a coupling member operatively connected to said shaft portion and coaxial therewith; sleeve means within said bore and coaxial therewith, said sleeve means being heat resistant and a poor conductor of heat, and having a heat-insulating cavity therein; said turbine rotor having a pin thereon fixedly secured to one end of said sleeve means and coaxial therewith; and a longitudinal connecting element fixedly secured at one end to said coupling member and at the other end to the other end of said sleeve means, and coaxial therewith; said sleeve means having a close tolerance with respect to said bore.
Claim 2
Dependent Claim
136 words
A turbine rotor assembly comprising a turbine rotor and a compressor rotor connected in a force-transmitting relationship; said compressor rotor comprising a hub having a shaft portion, said hub and shaft portion having an axial bore therethrough; a coupling member operatively connected to said shaft portion and coaxial therewith; sleeve means within said bore and coaxial therewith, said sleeve means being heat resistant and a poor conductor of heat, and having a heat-insulating cavity therein; said turbine rotor having a pin thereon fixedly secured to one end of said sleeve means and coaxial therewith; and a longitudinal connecting element fixedly secured at one end to said coupling member and at the other end to the other end of said sleeve means, and coaxial therewith; said sleeve means having a close tolerance with respect to said bore.
Claim 3
Dependent Claim
31 words
A turbine rotor assembly according to claim 1 wherein said pin and said connecting element are threadedly secured to said sleeve means, and are separated from each other by said cavity.
Claim 4
Dependent Claim
41 words
A turbine rotor assembly according to claim 1 wherein said cavity is of a length which, in proportion to said tolerance, causes transfer to said hub of a substantial portion of the heat supplied to the sleeve from the turbine rotor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |