| 摘要 |
A hydro power generation apparatus (10) for placement in a flow of water comprises first and second counter-rotating horizontal axis turbine assemblies (12,14). The assemblies include an inner housing (20, Fig 2), and a generator (22, Fig 2) and two gearboxes (24,26, Fig 2) mounted within the inner housing (20). A plurality of substantially helical blades (25) are mounted on a rotary casing (32) which extend around and rotate about the inner housing (20) for driving the gearboxes (24,26) and generator (22). Power is transmitted away from the apparatus (10) by a mooring cable (56, Fig 4) and the apparatus controls its own buoyancy to place it at optimum depth in a tidal flow for power generation. |
