Non-dam hydraulic power generating system

The invention relates to a hydropower generation system without dam, belonging to a power generation system, solving problems that at present the water power of rivers and lakes where it is not suitable for installing generators can not be used and if rivers are retarded to construct dams there are large power generation cost and long constructing period. Hydraulic turbines, which can rotate under the attack of water flow, can be set on rivers or falls and the rotary shaft of hydraulic turbine is connected with the rotary shaft of power generator actively by mechanical transmission method. Or a drainage device (closed drainage slot or pipe) extending to the downstream end along the flow direction is opened on the upstream end of rivers or falls with fall directly and the hydraulic turbine and generator integrated power generation device is set at the output position of drainage device. According to the demand, multiple hydraulic turbines are set in width and length directions of rivers in parallel or the drainage device constituted by multiple drainage pipes is set to form array generating set so as to improve the output power of generator and utilize energy sources more efficiently. It can be applied in various flowing rivers with fall.