F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
138/24
F15B 11/06 (2006.01)
Patent
CA 1134713
HYBRID HYDROSTATIC-PNEUMATIC POWER GENERATION SYSTEM Abstract of the Invention The apparatus of the present invention is comprised of transfer tanks which are located below the hydraulic head of a dam. Connected to the transfer tanks are air inlets extending from the transfer tanks to the atmosphere, and having check valves located therein. A water inlet and motor operated valve, interconnect the transfer tanks with the fluid behind the dam, and a water outlet and motor operated valve empty the transfer tank downstream of the dam. Associated with the transfer tanks is a storage tank which is inter- connected to the transfer tanks by transfer lines having check valves at their transfer tank ends, and a turbine out- let extends from the storage tank to an air driven turbine. In one embodiment of the invention two transfer tanks and one open-bottomed storage tank are located on the upstream side of the dam at its base. Thus the pressure of the air in the storage tank remains essentially constant, and propor- tional to the head of water above the tank, regardless of the volume of air in it. In this embodiment water outlets pass from the bottom of the transfer tanks through the face of the dam. In a second embodiment of the invention two transfer tanks, which comprise elongate flow tubes, and sev- eral enclosed cylindrical storage tanks are located down- stream of the dam at its base. This embodiment can be easily retrofit on existing dams, and if a pressure equalization line extends from the storage tanks to the reservoir behind the dam, this embodiment also provides for nearly constant pressure in the storage tanks. The method which is employed with both embodiments of the invention comprises utilizing the hydraulic head of the dam to compress air in the trans- fer tank by admitting water through the water inlet means, and then storing the compressed air in the storage tank. The transfer tank is then emptied of water, and thus filled with air, and the cycle is repeated.
341422
Cassidy Joseph C.
Gowling Lafleur Henderson Llp
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