WINDMILL-AND-PUMPED-STORAGE Russian patent published in 1998 - IPC

FIELD: wind-power and hydroelectric power engineering; electrification of small settlements, enterprises, and farms, high-capacity water- lifting units for water supply and irrigation. SUBSTANCE: station has low-head hydroelectric power plant communicating with upstream storage reservoir, water-lifting unit communicating with upstream and downstream storage reservoirs and with tank whose top part mounts windmill joined with elevators through reduction gear, and tank communicating with high-head underground hydroelectric power plant. Water-lifting unit is made in the form of tower with damper-type tank in its surface part and wells in underground part with elevators connected to windmill through double-reduction gear with gearshift provision; elevators are built up of ball floats and pistons functioning as water lifting units and sliding in vertical barrels provided with clack valve for intermediate water relief. Low-head and underground high-head plants as well as damper-type tank are integrated into single unit incorporating windmill operating according to double-stage scheme. EFFECT: improved efficiency of station, enlarged range of working speeds of wind. 2 cl, 6 dwg