US3818256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube-tension device for water cooled turbine generator rotors
Assignee: Westinghouse Electric Corp
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Filing: 1973-01-29
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Granted: 1974-06-18
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Expires: 1993-01-29
Abstract
Abstract A water cooled rotor for a large turbine generator in which the water coolant is discharged through a corrosion resistant tube extending through the bore of the rotor shaft. In order to accommodate differential thermal expansion of the corrosion resistant tube, the tube is pre-stressed in tension against a bracing member.
Inventors
- 👤 S Ying
- 👤 J Luzader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:47
CPC Classifications
H; H02; H02K; H02K9/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
148 words
A rotor for a dynamoelectric machine comprising: a body portion having windings thereon, said windings having passages for circulation of a fluid coolant extending therethrough; a shaft portion having a central axial bore extending therethrough, a coolant collection chamber connected to said shaft, a coolant discharge chamber connected to said shaft, said shaft having a first radial passage connecting said bore to said collection chamber, said shaft having a second radial passage axially spaced from said first radial passage connecting said bore to said discharge chamber; means for connecting said collection chamber to the passages extending through said windings; a hollow corrosion resistant member connecting said collection chamber to said discharge chamber, said hollow corrosion resistant member comprising a first radial portion, a second radial portion, and an axial portion connecting said first radial portion to said second radial portion; and, means for pre-stressing said corrosion resistant member.
Claim 2
Dependent Claim
148 words
A rotor for a dynamoelectric machine comprising: a body portion having windings thereon, said windings having passages for circulation of a fluid coolant extending therethrough; a shaft portion having a central axial bore extending therethrough, a coolant collection chamber connected to said shaft, a coolant discharge chamber connected to said shaft, said shaft having a first radial passage connecting said bore to said collection chamber, said shaft having a second radial passage axially spaced from said first radial passage connecting said bore to said discharge chamber; means for connecting said collection chamber to the passages extending through said windings; a hollow corrosion resistant member connecting said collection chamber to said discharge chamber, said hollow corrosion resistant member comprising a first radial portion, a second radial portion, and an axial portion connecting said first radial portion to said second radial portion; and, means for pre-stressing said corrosion resistant member.
Claim 3
Dependent Claim
200 words
A rotor for a dynamoelectric machine comprising: a body portion having windings thereon, said windings having passages for circulation of a fluid coolant extending therethrough; a shaft portion having a central axial bore extending therethrough, a coolant collection chamber connected to said shaft, a coolant discharge chamber connected to said shaft, said shaft having a first radial passage connecting said bore to said collection chamber, said shaft having a second radial passage axially spaced from said first radial passage connecting said bore to said discharge chamber; means for connecting said collection chamber to the passages extending through said windings; a hollow corrosion resistant member connecting said collection chamber to said discharge chamber; and, means for pre-stressing said corrosion resistant member, said means comprising: a bracing member; an end plate member; a clamp plate member having an opening therethrough, said end plate member and said clamp plate member being disposed at opposite ends of said bracing member; and, a bolt having threads thereon, said bolt passing through the opening in said clamp plate member, said bolt being threaded into said corrosion resistant member with a predetermined amount of torquE, said bolt thereby pre-stressing said corrosion resistant member against said bracing member.
Claim 4
Dependent Claim
200 words
A rotor for a dynamoelectric machine comprising: a body portion having windings thereon, said windings having passages for circulation of a fluid coolant extending therethrough; a shaft portion having a central axial bore extending therethrough, a coolant collection chamber connected to said shaft, a coolant discharge chamber connected to said shaft, said shaft having a first radial passage connecting said bore to said collection chamber, said shaft having a second radial passage axially spaced from said first radial passage connecting said bore to said discharge chamber; means for connecting said collection chamber to the passages extending through said windings; a hollow corrosion resistant member connecting said collection chamber to said discharge chamber; and, means for pre-stressing said corrosion resistant member, said means comprising: a bracing member; an end plate member; a clamp plate member having an opening therethrough, said end plate member and said clamp plate member being disposed at opposite ends of said bracing member; and, a bolt having threads thereon, said bolt passing through the opening in said clamp plate member, said bolt being threaded into said corrosion resistant member with a predetermined amount of torquE, said bolt thereby pre-stressing said corrosion resistant member against said bracing member.
Claim 5
Dependent Claim
160 words
The rotor of claim 2, wherein said corrosion resistant member comprises; a first radial portion, a second radial portion and an axial portion connecting said first radial portion to said second radial portion, a stop member mounted on said axial portion adjacent to said first radial portion, and, a tightening lug member mounted on said axial portion adjacent to said second radial portion, and wherein said bracing member has a first end and a second end, said end plate member has a groove therein, said end plate member abutting said stop member, said clamp plate member has a groove therein, said end plate member and said clamp plate member being disposed at opposite ends of said bracing member so that the groove in said end plate member engages the first end of said bracing member and the groove in said clamp plate member engages the second end of said bracing member, said bolt being threaded into said tightening lug member.
Claim 6
Dependent Claim
16 words
The rotor of claim 2, wherein said hollow corrosion resistant member is fabricated from stainless steel.
Claim 7
Dependent Claim
23 words
The rotor of claim 2, wherein said bracing member comprises a solid longitudinal bar, said bar extending centrally and axially through said bore.
Claim 8
Dependent Claim
20 words
The rotor of claim 2, wherein said bracing member is fabricated of material having a low coefficient of thermal expansion.
Claim 9
Dependent Claim
13 words
The rotor of claim 2, wherein three corrosion resistant members are disposed therein.
References Cited (Backward Citations)
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |