Patent US4326832A successfully refreshed from Google Patents.
US4326832A
Expired / Lapsed
US
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Exhaust outer casing
Assignee: Toshiba Corp
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Filing: 1979-10-12
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Granted: 1982-04-27
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Expires: 1999-10-12
Abstract
Abstract In a low pressure steam turbine which is constructed by an inner casing for supporting a rotatable turbine blade and an outer casing for supporting the inner casing, the outer casing is provided with a guide plate for causing the steam to flow laterally outward from the sides of the outer casing.
Inventors
- 👤 Takashi Ikeda
- 👤 Shinya Ayano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:05
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
151 words
An exhaust outer casing for a steam turbine wherein a low pressure steam turbine is constructed by an inner casing for supporting a rotatable turbine blade and an outer casing for supporting the inner casing, and said outer casing is adapted to connect to a condenser, the exhaust outer casing comprising: a base; a lower casing mounted on the base for supporting the inner casing and having means for receiving steam flow from the upper portion of the inner casing separately from the steam flow from the lower portion of the inner casing, and outlet means for discharging said steam flow laterally outward from the sides of the lower casing, and an upper casing mounted on the lower casing and having means for introducing the flow to the inner casing to rotate the turbine, wherein the bottom of the lower casing is inclined from its opposite sides to the middle thereof.
Claim 2
Dependent Claim
151 words
An exhaust outer casing for a steam turbine wherein a low pressure steam turbine is constructed by an inner casing for supporting a rotatable turbine blade and an outer casing for supporting the inner casing, and said outer casing is adapted to connect to a condenser, the exhaust outer casing comprising: a base; a lower casing mounted on the base for supporting the inner casing and having means for receiving steam flow from the upper portion of the inner casing separately from the steam flow from the lower portion of the inner casing, and outlet means for discharging said steam flow laterally outward from the sides of the lower casing, and an upper casing mounted on the lower casing and having means for introducing the flow to the inner casing to rotate the turbine, wherein the bottom of the lower casing is inclined from its opposite sides to the middle thereof.
Claim 3
Dependent Claim
40 words
An exhaust outer casing according to claim 1, wherein said means for receiving steam flow from the upper portion of the inner casing separately from the steam flow from the lower portion of the inner casing comprises a guide plate.
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) | 1985-04-26 | 1985-10-26 | 1986-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-26 | 1989-10-26 | 1990-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-26 | 1993-10-26 | 1994-04-27 | $7700.00 | Window Closed / Lapsed |