Two-stage/single-stage reversible pump-turbine with supplying pump
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United States of America Patent
Stats
-
Aug 12, 1980
Grant Date -
N/A
app pub date -
Feb 16, 1978
filing date -
Feb 21, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a hydroelectric facility, a vertically mounted rotatable shaft is connected to a motor-generator and carries a pump-turbine with a supplying pump disposed below and immersed in water, the supplying pump disengaging from the shaft when the pump-turbine is driving the motor-generator and engaging the shaft when the motor-generator is driving the pump-turbine and supplying pump, thereby providing a two-stage pumping mode and a single-stage generating mode.
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