JP3993220B1 - Water turbine for power generation - Google Patents

Abstract

A power generation water turbine capable of obtaining a driving torque stronger than that of a conventional power generation water turbine is provided.
SOLUTION: A pair of water turbines 110 and 120 are arranged so that a part of the lower part is immersed in water 101 flowing through a water channel, and are rotatably arranged in the same direction, and are connected to the water turbines 110 and 120. A power transmission member 130 that forms an endless track and allows the water turbines 110 and 120 to rotate together in the same direction, and is fixed to the power transmission member 130, and rotates around the endless track by receiving the power of the water 101 flowing through the irrigation channel. And a support member 150 that supports the power transmission member 130 and the water flow receiver 140 positioned above.
[Selection] Figure 1

Description

  The present invention relates to a power generation turbine used in irrigation canals, small rivers, and the like.

In recent years, power generation methods, power generation devices, and the like have begun to be reviewed along with soaring oil, and at the same time, power generation methods, power generation devices, and the like that are free from CO ₂ generation and natural destruction are considered. Thermal power generation using fossil fuels leads to environmental destruction such as global warming through the generation of CO ₂ . In addition, hydroelectric power generation that requires a dam causes environmental destruction associated with the construction of the dam and is extremely burdensome economically. For this reason, in recent years, the ratio of hydroelectric power generation to the total generated power has decreased.

  In addition, nuclear power generation has a large burden related to safety, such as safety and waste disposal. Moreover, what uses light energy, such as a solar cell, has low power generation efficiency of the device, and the ratio of energy required for production to generated energy is not sufficiently high, and it is difficult to say that it contributes greatly to the conservation of the natural environment. On the other hand, the possibility of new large-scale power generation methods such as power generation using nuclear fusion has not yet been seen.

Therefore, in recent years, wind power generation has been reviewed, but the wind does not always maintain a constant wind direction and wind speed, and it is necessary to devise methods for storing and using energy. Here, water wheel, which was less that you see in the current, also active as a small water turbine generator, a very good power source in terms of natural environmental protection, and continuously obtaining the energy It is possible to do. Specifically, Ogawa, in agricultural water path or the like, because it maintains a predetermined flow rate in a given season, during which it is possible to obtain a stable energy. Moreover, the area where the supply of agricultural water is systematically increased, and accordingly, the area where a constant flow rate can be stably secured throughout the year is also increasing.

However, conventional power generation turbines have a low driving torque, so the scale of power generation is small, and it is difficult to obtain practical power by effectively utilizing the hydroelectric energy of a small amount of water flowing through irrigation channels, small rivers, etc. Had. Therefore, the present condition is that it is hardly used except a part.

In view of the above situation, an object of the present invention is to generate power that can obtain a driving torque stronger than that of conventional power generation turbines by effectively utilizing the hydraulic energy of a water flow with a small flow rate flowing through a water channel, a small river, or the like. Provide water turbines.

In order to solve the above problems, the present invention provides the following configurations.
The invention according to claim 1 is a pair of water turbines arranged on the outer peripheral side so as to be able to rotate in the same direction by receiving the water flow of the river, and an endless track connected to the pair of water turbines. A pair of annular power transmission members that allow the water turbines to rotate in the same direction, and a plurality of power transmission members that are fixed to the pair of power transmission members and that rotate around the endless track under the power of water Each water turbine has a rotating shaft for driving the generator, a pair of annular peripheral frame members provided on the outer periphery, one end fixed to the rotating shaft and the other end at two locations. A plurality of blades that are fixed to the corresponding peripheral frame member and receive a water flow and rotate about the rotation shaft; the rotation shaft is made of metal, and each blade includes wood, resin, and a light alloy. Before any of the power transmission members correspond to each other. Characterized in that it is connected to the peripheral frame member.

According to a second aspect of the present invention, in the water turbine for power generation according to the first aspect, the water flow receiving portion is composed of a rectangular parallelepiped bucket into which the water enters.

The invention according to claim 3, in the power generation water vehicle according to claim 2, wherein the bucket is at least said possess one or more rotary member to a portion to be the far end relative to the endless track, said rotary member It rotates when it contacts with the side wall or bottom face of the irrigation canal .

  According to a fourth aspect of the present invention, in the water turbine for power generation according to the first aspect, the water flow receiving portion is made of a plate-like member capable of receiving the power of the water.

According to the first aspect of the present invention, a pair of water turbines arranged to be rotatable in the same direction in response to a river flow on the outer peripheral side, and an endless track connected to the pair of water turbines, A pair of water wheels that are integrally rotated in the same direction, and a pair of annular power transmission members that are fixed to the pair of power transmission members, rotate around the endless track under the power of water. A plurality of water receiving portions , each of which has a rotating shaft for driving a generator, a pair of annular peripheral frame members provided on the outer periphery, one end fixed to the rotating shaft, and the other end having 2 A plurality of blades that are fixed to the corresponding peripheral frame member at a location and receive water flow and rotate about the rotation shaft, the rotation shaft is made of metal, and each blade is made of wood, resin, and light alloy. Consists of one or more materials with low specific gravity, and each power transmission member supports To be connected to the peripheral frame member that can be added to the torque from the pair of hydraulic turbines and water receiving portion that rotates by receiving the power of water, irrigation canal, less flow through the small rivers It is possible to realize a power generation water turbine capable of obtaining a driving torque stronger than that of a conventional power generation water turbine by effectively utilizing the hydroelectric energy of the water flow.

According to the second aspect of the invention, in addition to the effect of the first aspect, the water receiving portion is formed of a rectangular parallelepiped bucket into which water enters, so that the power of water can be fully utilized.

According to the invention of claim 3, in addition to the aforementioned advantage of claim 2, bucket, at least, have a one or more rotating member at a portion to be the far end with respect to the endless track, the rotation member is disposed Since it rotates when it comes into contact with the side wall or bottom surface of the irrigation channel, it is possible to suppress or prevent disadvantages such as energy loss and wear due to contact with the irrigation channel.

  According to the invention which concerns on Claim 4, in addition to the effect of the said Claim 1, since a water receiving part consists of a plate-shaped member which can receive the motive power of water, a water receiving part is comprised lightweight. Therefore, the apparatus can be configured simply.

Hereinafter, embodiments of the present invention will be described with reference to the drawings showing examples.
FIG. 1 is a perspective view schematically showing an embodiment of a water turbine for power generation according to the present invention. As shown in FIG. 1, the power generation water turbine 1 is arranged so that a part of the lower part is immersed in the water 101 flowing through the water channel, and a pair of water turbines 110 and 120 disposed so as to be rotatable in the same direction. A power transmission member 130 connected to the water turbines 110 and 120 to form an endless track, the water turbines 110 and 120 being integrally rotatable, and the power of the water 101 fixed to the power transmission member 130 and flowing through the water channel And a plurality of water flow receiving portions 140 that rotate around an endless track, and a support member 150 that supports the power transmission member 130 and the water flow receiving portion 140 located above. For convenience of explanation, FIG. 1 shows the water 101 flowing through the irrigation channel, the bottom 102 of the irrigation channel, and the surface 103 of the water 101, with the walls of the irrigation channel omitted.

  The water turbines 110 and 120 include a rotating shaft 111 that drives a generator (not shown), a blade 112 that rotates around the rotating shaft 111 under the power of water, and a peripheral frame that fixes the blade 112 between the rotating shaft 111. Member 113. The rotating shaft 111 is made of, for example, metal having high mechanical strength and durability. The blades 112 have, for example, a plate shape and are made of a material having a small specific gravity such as wood, resin, light alloy, or the like. The peripheral frame member 113 is made up of one or more rings having a circular outer periphery, and has a predetermined shape such as irregularities and hooks on the outer peripheral surface in order to ensure sufficient engagement with the power transmission member 130. But you can. FIG. 1 shows an example in which the peripheral frame member 113 is composed of two rings having a circular outer periphery.

  The power transmission member 130 has, for example, a belt-like endless track shape, and is made of a resin such as hard rubber having a large friction coefficient and strong mechanical strength so that the water wheels 110 and 120 can be rotated. However, the power transmission member 130 may be configured by a plurality of members having a predetermined shape such as a rope shape, a wire shape, or a chain shape. FIG. 1 shows an example in which the power transmission member 130 is composed of two ropes and each rope is connected to a different peripheral frame member 113. Further, the power transmission member 130 may have a predetermined shape on the surface, such as irregularities according to the surface shape of the outer periphery of the peripheral frame member 113, in order to ensure sufficient engagement with the peripheral frame member 113. Furthermore, the material of the power transmission member 130 is not limited to resin, but may be a composite member made of resin and fibers, and may be metal if the power transmission member 130 has a shape such as a chain.

  The water flow receiver 140 is made of a bucket having a predetermined shape such as a rectangular parallelepiped, for example. The bucket 140 is attached to the power transmission member 130 so as to enter the water 101 flowing through the irrigation channel with the mouth up, receive water from the mouth, and move in the direction in which the water 101 flows, that is, the direction indicated by the arrow in FIG. It is done. Bucket 140 may have a shape in which a portion closer to the outer periphery when attached to power transmission member 130 is partially removed from the mouth toward the bottom. Thereby, the influence of the buoyancy due to the air in the bucket can be suppressed. The bucket 140 is attached to the power transmission member 130 using an adhesive, a screw, a string, or other conventional members for fixing.

  FIG. 2 is a sectional view (a) of a surface along the irrigation channel, a sectional view (b) in a direction crossing the irrigation channel, and a perspective view (c) showing the state of each component of the power generation turbine in the irrigation channel. is there. As shown in FIG. 2, the water flow receiving portion 140 is a roller, a caster that can rotate on a portion that becomes a far end with respect to the endless track, that is, a surface that becomes the bottom 102 side of the irrigation channel when moving in the irrigation channel It is also possible to have one or more rotating members 141 such as. By comprising in this way, it can suppress that the power transmission member 130 hangs down with the weight of the water flow receiving part 140, contacts with the bottom 102 of the water channel 104, prevents rotation of the water turbines 110 and 120, and causes wear or the like. Similarly, as shown in FIGS. 2B and 2C, the water flow receiving unit 140 has one or more rotating members 142 such as rollers and casters that can be rotated on the side surface of the water channel 104. You may have.

  As shown in FIG. 1, the support member 150 is configured to support and slide the power transmission member 130, the water flow receiver 140, or the power transmission member 130 and the water flow receiver 140, and a seat that holds the support 151. Part 152 and leg part 153 that holds support 151 in an appropriate position by supporting seat part 152. However, in a predetermined case, the seat portion 152 may be omitted and the leg portion 153 may be provided directly on the support body 151. By configuring in this way, it is possible to prevent the water flow receiver 140 from bending the power transmission member 130 by its own weight and rotating the water flow receiver 140 upward.

  Hereinafter, the operation of the power generation water turbine according to the present invention will be described with reference to FIG. Here, it is assumed that the power generation turbine is installed in the irrigation canal, for example, by blocking water. In addition, it is assumed that a generator (not shown) is connected to the rotating shaft 111 of one of the water turbines 110 in a manner in which rotational power is transmitted. First, the generator is left in an unloaded state, water is poured into the irrigation channel, and the power of water is applied to the blades 112 of the water turbines 110 and 120 and the water flow receiver 140 in the irrigation channel. As a result, the water turbines 110 and 120 begin to rotate, and the water flow receiving portion 140 in the irrigation channel moves in the direction of the arrow through the rotation member, so that the water flow receiving portion 140 located above the support member 150 moves on the support member 150. The water turbines 110 and 120 and the water flow receiver 140 rotate together through the power transmission member 130 by moving in the direction opposite to the direction of the water flow. Next, before the water receiving part 140 in the irrigation channel exits from the water 101, the next water receiving part 140 enters the water 101, and the rotation of the water receiving part 140 on the endless track continues in addition to the rotation of the water turbines 110 and 120. To do. Then, the sum of the rotational force (torque) obtained from the water turbines 110 and 120 and the water flow receiver 140 is transmitted as a drive torque to the generator via the rotating shaft 111 of the water turbine 110. Since the generator is in an unloaded state, the generator starts to rotate easily, and the rotational speed gradually increases. When the rotational speed of the rotating shaft 111 of the water wheel 110 becomes equal to or higher than a predetermined value corresponding to the flow velocity and the amount of water, current is taken out from the generator and the operation is performed in a so-called load state.

  By configuring as described above, it is possible to effectively use the hydraulic energy of the water flowing through the irrigation channel, which has conventionally been used only in a small part, and to increase the driving torque transmitted to the generator. As a result, by using the power generation water turbine according to the present invention, the generated power can be increased as compared with the conventional case. That is, not only the use of hydraulic energy when two turbines are used, but also the hydraulic energy of water flowing between the turbines can be used, which is several times to several tens of times compared to a conventional configuration using a single turbine. Double torque values can be obtained. By using the water turbine for power generation according to the present invention, it is possible to effectively utilize hydroelectric energy from a large number of agricultural waterways, other waterways, and small rivers.

  In the above description, the configuration in which the water flow receiving portion is formed of a bucket has been described. However, the present invention is similarly applied to a case where the water flow receiving portion is configured by another member. FIG. 3 is a perspective view schematically showing an embodiment of a power generation water turbine having a structure in which the water flow receiving portion is formed of a flat plate. 3, the same components as those shown in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. In the configuration shown in FIG. 3, the outer peripheral sides of the flat water flow receiving portions 240 and 241 are fixed to the water flow receiving portion holding member 231.

  Here, the flat water flow receiving portions 240 and 241 may be made of a material having a small specific gravity, such as wood, resin, or light alloy. Further, for example, a support member 242 is provided on a downstream surface of the flow of the predetermined flat plate 241 so that the flat water flow receiving portions 240 and 241 do not fall in the flow direction when the water 101 is received in the irrigation channel. It may be done. The support member 242 has, for example, an L-shape, and is configured by a member made of a mechanically strong and light polycarbonate or the like. FIG. 4 is a diagram corresponding to FIG. 2, and is an explanatory diagram showing a state of each component of the power generation water turbine shown in FIG. 3 in the water channel. By configuring in this way, the water flow receiving portions 240 and 241 can be lightened, and the effect of buoyancy can be obtained, and the drooping of the power transmission member 130 due to the weight of the water flow receiving portions 240 and 241 is as shown in FIG. Can be suppressed. As a result, it is possible to omit the support member, the rotation member, and the like described above.

1 is a perspective view schematically showing an embodiment of a water turbine for power generation according to the present invention. It is sectional drawing (a) about the surface along an irrigation channel which shows the mode of each component of the water turbine for electric power generation in an irrigation channel, sectional drawing (b) of the direction which crosses an irrigation channel, and perspective view (c). It is a perspective view which shows typically one Example of the water turbine for a power generation of a structure where a water flow receiving part consists of a flat plate. It is a figure corresponding to FIG. 2, and is explanatory drawing which shows the mode of each structure part of the water turbine for electric power generation shown in FIG. 3 in a water channel.

Explanation of symbols

1, 2 Water turbine for power generation 101 Water flowing through water channel 102 Bottom of water channel 103 Water surface 104 Water channel 110, 120 Water wheel 111 Rotating shaft 112 Blade 113 Peripheral frame member 130 Power transmission member 140, 240, 241 Water flow receiving portion 141, 142 Rotation Member 150 Support member 151 Support body 152 Seat part 153 Leg part 231 Water flow receiving part holding member 242 Support member

Claims (4)

A pair of water turbines arranged on the outer peripheral side so as to be able to rotate in the same direction under the flow of the river;
A pair of annular power transmission members connected to the pair of water turbines to form an endless track, and the pair of water turbines can be rotated together in the same direction;
A plurality of water receiving portions fixed to the pair of power transmission members and rotating around the endless track by receiving the power of water;
Each of the water turbines has a rotating shaft for driving the generator, a pair of annular peripheral frame members provided on the outer periphery, and the peripheral frame member having one end fixed to the rotating shaft and the other end corresponding to two locations. A plurality of blades that are fixed and receive a water flow and rotate about the rotation shaft, the rotation shaft is made of metal, and each blade is any one of a material having a small specific gravity including wood, resin, and light alloy The power generation turbine according to claim 1, wherein each of the power transmission members is connected to the corresponding peripheral frame member.   2. The power generation water turbine according to claim 1, wherein the water flow receiving portion includes a rectangular parallelepiped bucket into which the water enters. The bucket, at least, characterized in that rotating when the possess one or more rotary member to a portion to be the far end relative to the endless track, in contact with the side wall or bottom of canals said rotary member is disposed The water turbine for power generation according to claim 2.   The water turbine for power generation according to claim 1, wherein the water flow receiving portion is formed of a plate-like member capable of receiving the power of the water.

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