Vertical axis-type hydroelectric power generating device and vertical axis-type hydroelectric power generating unit

Abstract

This vertical axis-type hydroelectric power generating device (100) is provided with: a power generator (50) that receives a rotary driving force from a water flow to thereby generate electric power;a vertical rotating shaft (20) that is rotatably coupled to the power generator (50) and is installed so as to be suspended downward in the vertical direction; and a plurality of blades (13) disposedalong the circumferential direction on the periphery of the vertical rotating shaft (20) at approximately equal angle intervals. The plurality of blades (13) are formed so as to extend in the verticaldirection and are formed as straight wings each having a cross-sectional shape comprising a wing-like shape, and the plurality of blades (13) are configured from at most five blades when viewed fromthe bottom surface. According to such a configuration, it is possible to provide an unprecedented vertical axis-type hydroelectric power generating device which is capable of suppressing an excitationforce (fatigue load) generated by the effect of the water flow to a low level while ensuring sufficient output characteristics, and is further capable of suppressing the mass of the structural body and the installation cost of the entire device to a minimum.

Description

technical field [0001] The present invention relates to a vertical axis hydroelectric power generation device and a vertical axis hydroelectric power generation unit. Background technique [0002] Conventionally, there is known a hydroelectric power generation device that rotates blades of a waterwheel by using a water flow, and transmits the rotational motion to a generator to generate electric power. In the conventional small-sized hydroelectric power generation devices, the "fall type" that intercepts the waterway to generate electricity, and the "barrel rotor (Savonius) type" water wheel that generates electricity by using the resistance of the water flow (for example, refer to the following patent documents) are often used. 1). However, when these waterwheels are to be installed in existing waterways, a large-scale waterway reconstruction project to prevent water from overflowing from the waterway is required, and therefore, there are many restrictions on the installat...

AI Technical Summary

Problems solved by technology

However, when these waterwheels are to be installed in existing waterways, a large-scale waterway improvement project is required to prevent water from overflowing from the waterways, and therefore, there are many restrictions on the installation places of hydroelectric power plants.

In addition, in terms of the characteristics of the waterwheel, since the garbage flowing in the waterway is accumulated in the waterwheel, a dust removal device and a huge maintenance cost are also required.

That is to say, there are factors hindering the popularization of conventional hydroelectric power generation devices from the viewpoint of economical rationality such as huge initial costs and maintenance costs.

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