US3693356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic turbine inlet configuration
Assignee: Allis Chalmers Hydro Inc
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Filing: 1970-10-19
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Granted: 1972-09-26
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Expires: 1990-10-19
Abstract
Abstract An intake configuration for a low head hydraulic turbine installation wherein the inlet control gate is positioned upstream from the entrance to the turbine water passageway inlet and is located below the level of the turbine headwater reservoir. The upstream side of the gate body is constructed and arranged to combine with the turbine water passageway inlet to present an efficiently smooth contoured approach for the water into the turbine. When in the open position, the bottom gate seal coacts with the top of the inlet to insure that the water will follow the contoured surface of the upstream side of the gate body.
Inventors
- 👤 Howard A Mayo Jr
- 👤 Edwin W Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:12
CPC Classifications
E; E02; E02B; E02B9/00; E02B9/02; E02B9/04; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
An inlet configuration for a low head hydraulic turbine installation having a water reservoir comprising in combination: a turbine inlet passageway having top, bottom and side walls defining an inlet to said passageway, said inlet being located completely below the level of the water in said reservoir; seal seat means formed on said top and bottom walls; a gate valve body having a pair of spaced seal elements positioned to engage said seat means to block the flow of water from said reservoir into said inlet when in the closed position; means including radially disposed support arms connected to said gate body pivotally supported upstream from said gate body to permit swinging movement of said gate body in said reservoir on the arc of a circle between open and closed positions, said seat means and said seal elements being located on said arc defined by said valve body; and surface means on the upstream side of said gate body constructed and arranged to mate with the top wall of said passageway when the gate is open to provide a streamlined water approach from said reservoiR into said inlet.
Claim 2
Dependent Claim
188 words
An inlet configuration for a low head hydraulic turbine installation having a water reservoir comprising in combination: a turbine inlet passageway having top, bottom and side walls defining an inlet to said passageway, said inlet being located completely below the level of the water in said reservoir; seal seat means formed on said top and bottom walls; a gate valve body having a pair of spaced seal elements positioned to engage said seat means to block the flow of water from said reservoir into said inlet when in the closed position; means including radially disposed support arms connected to said gate body pivotally supported upstream from said gate body to permit swinging movement of said gate body in said reservoir on the arc of a circle between open and closed positions, said seat means and said seal elements being located on said arc defined by said valve body; and surface means on the upstream side of said gate body constructed and arranged to mate with the top wall of said passageway when the gate is open to provide a streamlined water approach from said reservoiR into said inlet.
References Cited (Backward Citations)
US464195A
Cited
GB366285A
Cited
DE659759C
Cited
US2317975A
Cited
US2621483A
Cited
US2621484A
Cited
US2759697A
Cited
US2888036A
Cited
US3039482A
Cited
CH422453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |