US3976399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor of disc construction for single-shaft gas turbine
Assignee: Kraftwerk Union AG
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Filing: 1971-07-08
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Granted: 1976-08-24
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Expires: 1991-07-08
Abstract
Abstract Rotor of disc construction for at least single-shaft gas turbines having compressor and turbine stages includes respective rotor disc packages for the compressor and turbine stages, a hollow shaft located between the compressor and turbine stages, and respective shaft stubs seated at the outer ends of the rotor disc packages at respective meshing centering ring gears secured against torsion, all strung together coaxially, and means for clamping the same together including a connecting rod extending centrally therethrough; and tubular intermediate members located between the outer periphery of the connecting rod and the inner periphery of the rotor discs for maintaining elastic contact between the connecting rod and the discs during operation of the turbine, the intermediate members being axially divided shells surrounding the connecting rod, and at least one clamping ring clamping the shells together and bracing them against the outer periphery of the connecting rod.
Inventors
- 👤 Otto Schmoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:44
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/066
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
Rotor of disc construction for at least single-shaft gas turbines having compressor and turbine stages, comprising respective rotor disc packages for the compressor and turbine stages, a hollow shaft located between said compressor and turbine stages, and respective shaft stubs seated at the outer ends of the rotor disc packages at respective meshing centering ring gears secured against torsion, all strung together coaxially, and means for clamping the same together including a connecting rod extending centrally The and tubular 2 members located between the outer periphery of said connecting rod and the inner periphery of said rotor discs for maintaining elastic contact between said connecting rod and said discs during operation of the turbine, said intermediate members comprising axially divided shells surrounding said connecting rod and extending axially coextensively with a plurality of said discs, and at least one clamping ring clamping said shells together and bracing them against the outer periphery of said connecting rod.
Claim 2
Dependent Claim
156 words
Rotor of disc construction for at least single-shaft gas turbines having compressor and turbine stages, comprising respective rotor disc packages for the compressor and turbine stages, a hollow shaft located between said compressor and turbine stages, and respective shaft stubs seated at the outer ends of the rotor disc packages at respective meshing centering ring gears secured against torsion, all strung together coaxially, and means for clamping the same together including a connecting rod extending centrally The and tubular 2 members located between the outer periphery of said connecting rod and the inner periphery of said rotor discs for maintaining elastic contact between said connecting rod and said discs during operation of the turbine, said intermediate members comprising axially divided shells surrounding said connecting rod and extending axially coextensively with a plurality of said discs, and at least one clamping ring clamping said shells together and bracing them against the outer periphery of said connecting rod.
Claim 3
Dependent Claim
20 words
Rotor according to claim 1 wherein said clamping ring is secured by shrink-fitting on said shells and said connecting rod.
Claim 4
Dependent Claim
19 words
Rotor according to claim 1 including two clamping rings, clamping said shells together at respective ends of said shells.
Claim 5
Dependent Claim
27 words
Rotor according to claim 1 wherein said tubular intermediate members are formed of two similar shell halves surrounding said connecting rod with only a narrow gap therebetween.
Claim 6
Dependent Claim
25 words
Rotor according to claim 1 wherein said shells extend axially along the axial length of a rotor disc package comprising a plurality of rotor discs.
Claim 7
Dependent Claim
35 words
Rotor according to claim 1 wherein said shells are disposed over substantially half the length of said connecting rod and in vicinity of the first rotor discs of the compressor stage facing the turbine stage.
Claim 8
Dependent Claim
45 words
Rotor according to claim 3 including two clamping rings clamping said shells together adjacent respective ends of said shells, the ends of said shells projecting beyond the respective clamping rings and being surrounded respectively by a rotor disc located directly adjacent the respective clamping ring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |