JP2003201949A - River water power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a river water power generation device performing power generation with no influence on environment, without requiring the construction of a dam and impairing an ecology system, natural environment and scenery. <P>SOLUTION: The river water power generation device has a water wheel 102 having a plurality of blades radially extended against an approximately horizontally provided rotation shaft 101; and a power generator 103 connected to the rotation shaft 101 of the water wheel. The water wheel 102 has a plurality of water wheel modules 110 approximately horizontally provided in a row at a predetermined space; and a lifting mechanism capable of varying a height of installment of the water wheel modules 110 such that a flow of river water is only butted to a blade 102d at a lower side of the water wheel 102. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a river water power generation device for generating electric power using a stream of water flowing through a city or a mountain village, or a stream of a valley.

[0002]

2. Description of the Related Art Conventionally, so-called hydroelectric power generation has been widely known, in which a turbine is used to generate electric power by using the water of a river or a valley, which is one of the power generation methods not only in Japan but also in the world.
It is often used as a power source and plays an important role in supplying electric energy. This conventional hydroelectric power generation, regardless of size, builds a dam in a river or a valley, once dams the water of the river to store water, then turns the turbine by the hydraulic power obtained by discharging it, and turns it into a turbine. It was to generate electricity with a connected generator. Hydropower does not emit radioactive waste like nuclear power, and
Since there is no concern about exhausting harmful substances such as carbon dioxide and carbon monoxide as in thermal power generation, it has been re-recognized in recent years as a clean energy that is kind to the earth.

[0003]

However, the conventional hydraulic power generation described above has the following problems. In other words, when constructing a hydroelectric power plant, it is necessary to construct dams in rivers and valleys as described above, which prevents fish such as trout and salmon from upstream to upstream during the spawning season. ,
It was pointed out that it would destroy the river ecosystem. Also,
Along with the construction of the dam, the natural environment around it has been destroyed and the landscape has been damaged. Furthermore, villages and forests around the river, which is also a place of living and labor, will be submerged, and local residents and environmental protection groups are protesting against dam construction. Therefore, despite the recognition of hydropower as a clean energy, it is extremely difficult to construct a new hydropower plant in Japan.

Therefore, an object of the present invention is to provide a river water power generation device which does not require the construction of a dam and does not damage the ecosystem, the natural environment, and the landscape, and which is environmentally friendly.

[0005]

In order to achieve the above object, the invention according to claim 1 is a water turbine having a plurality of blades radially extending with respect to a rotation shaft pivoted substantially horizontally. In a river water power generation device having a generator connected to a rotating shaft of the water turbine, a plurality of the water turbine modules are provided in a row substantially horizontally at predetermined intervals, and a blade on the lower side of the water turbine. It is configured to have an elevating mechanism for changing the installation height of the water turbine module so that the river water flow only hits.

The present invention according to claim 2 is, in addition to the configuration of the invention according to claim 1, configured such that the generator is installed on a riverbank and the water turbine module is installed above the river surface. .

In addition to the structure of the invention according to claim 1 or claim 2, the invention according to claim 3 has a paddle formed at the tip of the wing so as to form an obtuse angle with the wing, and the paddle. In the opposite direction, the plow is formed so as to form an acute angle with the wing.

In addition to the configuration of the invention according to claim 1, the invention according to claim 4 is one in which the generator and the turbine module are integrally formed and can be transported.

According to a fifth aspect of the present invention, in addition to the configuration of the invention according to any one of the first to fourth aspects, a circulation is provided between the rotating shaft of the generator and the rotating shaft of the water turbine. The rotating shaft of the water turbine is connected to the generator via a transmission device including a tensioned transmission medium and a tensioner that applies an appropriate tension to the transmission medium.

[0010]

The river water power generation device of the present invention has the above-described structure, and thus has the following unique action of the present invention.

First, according to the river water power generation device of the present invention, since the plurality of turbines lined up in a row are rotated by the water flow of the river flowing in one direction, the most upstream turbine of the plurality of turbines is also the most downstream. The water turbine in the same way rotates in the same way, and the flow of the river can be used for power generation without waste.

Further, according to the river water power generation device of the present invention, in addition to the function of the river water power generation device of the first aspect, a river flowing from the upstream to the downstream or from the river to the paddy It directly converts electric current into electric energy without storing the water flow such as the agricultural canal that draws in water.

Further, according to the river water power generation device of the present invention, in addition to the action of the river water power generation device of the first or second aspect, trout, salmon, etc. that trace back from upstream to upstream. Converts river flow directly into electrical energy without hindering the run up of the river.

Further, according to the river water power generator of the present invention, in addition to the function of the river water power generator of the first invention, an out door door for mountain stream fishing, riverside camps, etc.
It also works as a leisure power source.

According to the river water power generation device of the fifth aspect of the present invention, in addition to the function of the river water power generation device of any one of the first to fourth aspects, the river water power generation device can be used for raising and lowering the turbine module. Instead, the rotation of the water turbine is reliably transmitted to the generator.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below based on Embodiment 1 with reference to FIG. FIG. 1 is a conceptual diagram showing an outline of the mechanism of the river water power generation device 100 according to the first embodiment. In this river water power generation device 100, a water turbine 102 having a plurality of wings 102a, 102b, ... Radially extending with respect to a rotating shaft 101 pivoted substantially horizontally is substantially horizontal with a predetermined interval. A plurality of water turbine modules 108 installed in a row above the river surface and the water turbine 1
It has a generator 103 connected to the rotating shaft 101 of No. 02 and fixedly installed on the riverbank. Although FIG. 1 shows the turbine module 108 having five turbines 102, the number of turbines is not limited to this, and can be appropriately selected according to the amount of electric power required.

Further, the support mechanism 104 for supporting the installation height changeably, and the handle 1 for changing the installation height.
By the lifting mechanism of No. 05, the wings located below the rotary shaft of the water turbine (10 in the state shown in FIG.
The installation height of the water turbine module 108 can be adjusted so that the water flow of the river hits only the 2d wings).

Between the rotary shaft 101 of the water turbine and the generator 103, there is a belt 109 circulated between the drive side pulley 106, the driven side pulley 107 and both pulleys, and a tensioner for applying an appropriate tension to the belt. And the tensioner 108 acts to follow the change in the height of the water turbine module 110, so that the rotation of the water turbine is reliably transmitted to the generator 103 installed on the river bank. Is configured.

In this example, a transmission using a pulley and a belt is used as the transmission, but the transmission is not limited to this as long as it can reliably transmit the rotation of the water turbine to the generator. A transmission device using a sprocket and a chain can be similarly used. Although not shown, it is also possible to efficiently apply the water flow of the river to the wing of the water turbine by installing a weir member that is inclined with respect to the water flow direction of the river on the upstream side of the water turbine module.

Next, a second embodiment which is another embodiment of the present invention will be described with reference to FIG. FIG. 2 describes the features of the river water power generation device 200 according to the present invention, as a cross-sectional view when the device is installed in a river and as an enlarged perspective view of a part of a turbine blade used in the device. is doing. In the figure, the arrow labeled v indicates the direction of the flow of river water, and the arrow labeled f indicates the direction of travel of the fish going from downstream to upstream.

The river water power generation device 200 includes the wing 20 of each turbine.
A paddle 203 is formed at the tip of 2 so as to form an obtuse angle with the wing, and a plow 204 is formed in the opposite direction to the paddle 203, that is, so as to form an acute angle with the wing 202.

By setting the shape of the water turbine in this way, when migratory fish such as trout and salmon that go from the downstream to the upstream during the spawning period approach the water turbine 200a on the most downstream side of the river water power generation device 200, It is scooped by the plow 204 and carried to the upstream side of the water turbine 200a. Then, subsequently, the water wheel 200b is scooped by the plow 204,
It is carried to the upstream side of b. In this way, the migratory fish that have risen from the downstream side can be moved to the upstream side by the river water power generation device 200 without being blocked from going up.

The shape of the plow 204 is not particularly limited, but when scooping the fish, it is desirable that the tip of the plow 204 be round so that the fish is not damaged. Also, FIG.
Although the shape shown in Fig. 3 is a rake shape, it is also possible to make a rake shape. Alternatively, the paddle 203 and the plow 204 may be formed of a single plate, and a plurality of holes may be formed in the hoe 204 to allow water to escape.

In the first and second embodiments described above, the turbine module is installed above the river surface and the generator is installed on the river bank.
The large-scale river water power generation system was explained, but a small portable river water power generation system was constructed with a turbine module and a generator that can be transported together, as a power source for out doors and leisure activities such as mountain stream fishing and riverside camping. It can also be a device. In that case, it is possible to reduce the number of parts and reduce the weight of the device by directly connecting the generator to the rotary shaft of the water turbine without using the transmission device described in the first embodiment. Further, a connection mechanism is provided in the water turbine module so that the plurality of water turbine modules can be arbitrarily attached and removed in series and / or in parallel, and the water turbine module is appropriately connected according to the required amount of power and the place of use. It is also possible to select the number of.

[0025]

EFFECTS OF THE INVENTION The river water power generator of the present invention has the following effects by having the above-mentioned configuration.

First, according to the river water power generation device of the first aspect of the present invention, since a plurality of water turbines form a water turbine module in which they are substantially horizontally aligned in a line at a predetermined interval, they flow in one direction. The water flow of the river is received by multiple turbines in multiple stages, and the turbines located at the most upstream and downstream of the turbines rotate in almost the same way, so that the river flow can be used for power generation without waste. You can

According to the river water power generation device of the second aspect, in addition to the effect of the river water power generation device of the first aspect, the generator is installed on the river bank and the water turbine module is installed above the river surface. Therefore, even if the water level increases due to flooding etc., the device will not be washed away, and since it is not necessary to construct a large-scale dam or weir, the construction cost will be low and the natural environment and landscape will be damaged. Nor.

Further, according to the river water power generation device of the third aspect of the present invention, in addition to the effect of the river water power generation device of the first or second aspect, an obtuse angle is formed at the tip of the wing of the water turbine. As well as forming a paddle to form an egg, in a direction opposite to the paddle, a plow was formed so as to form an obtuse angle with the wing, so that migratory fish such as trout and salmon that go up from downstream to upstream during the spawning season. It does not hinder the run-up and does not damage the river ecosystem.

According to the river water power generator of the present invention, in addition to the effect of the river water power generator of the first invention, the generator and the water turbine module can be integrally carried. It can also be used as a power source for out doors and leisure activities such as mountain stream fishing and riverside camping.

According to the river water power generation device of the fifth aspect of the present invention, in addition to the effects of the river water power generation device of any one of the first to fourth aspects, the rotating shaft of the generator and the turbine are A configuration in which the rotating shaft of the generator and the rotating shaft of the water turbine are connected via a transmission device including a transmission medium that is circulated and stretched between the rotation shaft and a tensioner that applies appropriate tension to the transmission medium. By doing so, the rotation of the water turbine can be reliably transmitted to the generator regardless of the elevation of the water turbine module.

Further, in recent years, the use of natural energy has attracted public attention in order to reduce carbon dioxide emissions, the cost of introduction is low, and there is no problem of environmental destruction. The above utility value is extremely high.

[Brief description of drawings]

FIG. 1 is a conceptual diagram illustrating a mechanism according to a first embodiment of the present invention.

2A and 2B are a sectional view and an enlarged perspective view of an essential part for explaining a second embodiment of the present invention.

[Explanation of symbols]

100, 200 ・ ・ ・ River water power generator 101, 201 ... Rotating shaft 102 ... Turbine 103 ・ ・ ・ Generator 104 ... Supporting device 105 ... Handle 106 ... Drive side pulley 107 ... driven pulley 108 Tensioner 109 ・ ・ ・ Belt 110 ・ ・ ・ Turbine module 202 ・ ・ ・ feather 203 ... Paddle 204 ... plow v ・ ・ ・ Direction of river water flow f: Direction of movement of fish

Claims (5)

[Claims] 1. A river water power generation device having a water turbine having a plurality of blades extending radially with respect to a rotary shaft pivoted substantially horizontally and a generator connected to the rotary shaft of the turbine. A plurality of water turbine modules, each of which has a plurality of water turbines arranged in a line in a substantially horizontal line at a predetermined interval, and an elevating / lowering unit for varying the installation height of the water turbine module so that the river water flow only hits the lower wings of the water turbine. A river water power generation device characterized by having a mechanism. 2. The river water power generator according to claim 1, wherein the generator is installed on a river bank, and the water turbine module is installed above a river surface. 3. A paddle is formed at the tip of the wing so as to form an obtuse angle with the wing, and in the opposite direction to the paddle,
The river water power generation device according to claim 1 or 2, wherein the plow is formed so as to form an acute angle with the wing. 4. The river water power generator according to claim 1, wherein the generator and the water turbine module are integrally configured and configured to be transportable. 5. A transmission device including a transmission medium that is circulated and stretched between a rotation shaft of the generator and a rotation shaft of the water turbine, and a tensioner that applies a proper tension to the transmission medium. The river water power generator according to any one of claims 1 to 4, wherein a generator and a rotating shaft of the water turbine are connected.