F - Mech Eng,Light,Heat,Weapons – 03 – B
Patent
F - Mech Eng,Light,Heat,Weapons
03
B
138/30
F03B 3/02 (2006.01) F03B 13/06 (2006.01)
Patent
CA 1092940
ABSTRACT A reversible pump-turbine for medium and high pressure hydroelectric plants, comprising: a vertically mounted rotatable shaft coaxial with said pump- turbine and engaging a rotor thereof; a motor generator connected with an upper end of said shaft; a supplying pump disposed below said pump-turbine and engage- able with a lower end of said shaft in one direction of rotation thereof; a first conduit opening axially into said pump-turbine; a second conduit opening tangentially into said pump-turbine; a third conduit communicating between an outlet of said supplying pump and said first conduit; a fourth conduit communicating between an inlet of said supplying pump and said first conduit; closure means, operable between a fourth conduit blocking position when said pump-turbine is driving said motor-generator, and a first conduit blocking position when said pump-turbine and said supplying pump are being driven by said motor-generator, for directing a water stream into said fourth conduit; a sluice in said third conduit operable between a closed position when said pump-turbine is being driven by said motor- generator and an open position when said pump-turbine and said supply-pump are being driven by said motor-generator; guide means at said inlet of said supplying pump for imparting a rotation to an incoming water stream, said pump-turbine being of a scroll type having a diminishing cross section with a plurality of vanes mounted on said rotor in one direction and at least one vane guide for controlling the flow between said rotor and said scroll, said supplying pump being of a scroll type having a diminishing cross section and oriented 180 opposite to said scroll of said pump-turbine and a plurality of vanes arranged on a rotor thereof in a direction opposite to said vanes of said pump-turbine, said supplying pump being engaged by said shaft when said shaft is being driven by said motor generator. The turbine is used in hydraulic power stations operating within pressure ratios of up to water columns of 700 m.
297345
Borden Ladner Gervais Llp
Titovi Zavodi Litostroj Ljubljana N.sol.o.
LandOfFree
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