Method of refurbishing an energy conversion facility and refurbished energy conversion facility
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United States of America Patent
Stats
-
Jan 29, 2019
Grant Date -
Dec 11, 2014
app pub date -
May 19, 2014
filing date -
Jun 5, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This method can be used for refurbishing a facility for converting hydraulic energy into electrical or mechanical energy, and vice versa. The facility includes a Francis type pump-turbine. The pump-turbine includes a runner movable about an axis, a pre-distributor, including stay vanes defining between each pair of two adjacent stay vanes a first water passage channel and a distributor, including guide vanes arranged downstream of the stay vanes in the direction of water flow feeding the pump-turbine operating in turbine mode. The guide vanes define between each pair of two adjacent guide vanes a second water passage channel. This method includes steps of reducing the height, taken parallel to the axis of rotation of the runner, of the first water passage channels and reducing the height, taken parallel to the axis of rotation of the runner, of the second water passage channels.
First Claim
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Family
International Classification(s)
- 2014 Application Filing Year
- B23P Class
- 1101 Applications Filed
- 767 Patents Issued To-Date
- 69.67 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B23P Class
- 0 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 29, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 29, 2030 |
