JP4866943B2 - Flowing water acceleration type generator - Google Patents

Description

  The present invention relates to a power generation device that generates power using running water, tidal current, or the like.

  As a conventional hydroelectric power generation device, one described in Patent Document 1 below is known. In this power generation device, rotor blades connected to the respective rotation shafts of a pair of generators are arranged in a water channel of a casing member, and the area of the opening end is set downstream of the water inlet side opening of the casing member. The water flow acceleration part formed so that it may decrease gradually toward is provided.

Japanese Patent No. 4022244

  In the above power generator, the water flow speed increasing portion formed so as to gradually reduce the area of the opening end of the water inlet side opening portion gradually toward the downstream side is provided. It can be done only at the speed part, and there is a limit to the speed increase.

  Accordingly, an object of the invention described in claim 1 is to provide a running water acceleration type power generation device with high power generation efficiency that can be sufficiently accelerated with respect to the water flow to the water turbine.

  In order to achieve the above object, the invention described in claim 1 includes a float on which a generator is mounted, and a water turbine disposed on both sides of the float and connected to the generator. A pair of downwardly raised solids along the longitudinal direction of the float are formed and separated at the lower side of the float, and are inclined so as to be lowered toward the front in front of the downwardly raised solids and the water wheel. A guide plate is rotatably installed, and a water flow at a higher speed than a water flow downstream of the water wheel is formed between the lower raised bodies, and the water flow downstream of the water wheel is generated by the high speed water flow. (The guide plate becomes horizontal by rotation when it contacts the bottom).

  In order to achieve the object of generating power in a more efficient state by further increasing the acceleration effect of the water flow in addition to the above object, the invention described in claim 2 is the front part of the float. However, it becomes the shape where a width | variety becomes narrow as it becomes before, It is characterized by the above-mentioned.

  In addition to the above-mentioned object, the invention according to claim 3 is the above-mentioned invention, in order to achieve the object of further improving the efficiency of the power generation device by eliminating waste in the action of flowing water to the water turbine. And a plate-shaped water turbine vent on the outside (a shape in which the water flow does not flow outside).

  In addition to the above-mentioned object, the invention described in claim 4 is the above-described invention, in order to achieve the object of appropriately dealing with entanglement, leakage, disconnection, loss, theft, etc. Is provided with an abnormal communication means for transmitting when power generation is stopped.

  According to the present invention, a pair of downwardly raised solids whose inner surfaces are along the float are provided at the lower part of the float having water wheels on both sides, and a front lowering guide plate is provided at the front part of these downwardly raised solids. Therefore, the guide plate can guide the lower water flow upward to accelerate the flow rate of the water flowing between the lower upright plates and / or the lower part of each turbine, and also form a fast water flow along the float between the lower upright plates. Thus, the water flow downstream (discharge side) from each water turbine that has received resistance from each turbine and consumed the flow velocity energy can be pulled inward (Bernoulli's theorem) to accelerate the water flow to each turbine. It is possible to achieve the effect that the water turbine can be efficiently rotated by the accelerated water flow.

It is a section explanatory view of the generator used suitably in the present invention. It is a top view (state which omitted the blade of the upper half) of the power generator of the present invention. It is a left view of the electric power generating apparatus of FIG. FIG. 3 is a rear view of the power generation device of FIG. 2 (a state in which a blade in the latter half is omitted).

  Hereinafter, an example of an embodiment according to the present invention will be described with reference to the drawings as appropriate. In addition, the said form is not limited to the following example.

[Generator configuration, etc.]
First, the generator suitably used in the said form is demonstrated (refer Japanese Patent Application No. 2009-68680 which is another application of the present applicant). FIG. 1 is a central cross-sectional view of the generator 1, and the generator 1 is provided to be fixed to a cylindrical main shaft 2 that can be rotated (reversed) around the main shaft 2 in different directions. A coil shaft 4 and a housing 6 are provided.

  The coil shaft 4 includes a coreless coil disk rotor 41 that does not have an iron core wound with a conducting wire in a state of a disk with a hole in the center, and is rotatably attached via a first bearing 21. On the other hand, a magnet 63 is attached to the inside of the housing 6 and facing each surface of the coil disk rotor 41, and the housing 6 is rotatably attached via a third bearing 61. . An intermediate gear 24 is disposed on the flange 22 of the main shaft 2 via a second bearing 23, and the intermediate gear 24 includes an internal gear 42 in the coil shaft 4 and an external gear of internal teeth in the housing 6. 62, the coil shaft 4 (coil disk rotor 41) and the housing 6 (magnet 63) are reversed to increase the relative speed between the coil disk rotor 41 and the magnet 63 (rotational driving force reversal transmission mechanism). ).

  A rotational driving force from the outside (water wheel 104 described later) is input to the coupling 67 of the housing 6. On the other hand, the generated electricity is output from a non-sparking slip ring 44 having a conductor band 43 of the coil shaft 4 and a divided electrode 26 in contact therewith.

[Generator operations, features, effects, etc.]
According to the generator 1 described above, each coil disk rotor 41 can be rotated at a relatively high speed even when the rotational speed related to the rotational driving force is relatively slow, and the power generation efficiency is improved. Can be.

[Configuration of power generation equipment]
Next, an embodiment of a running water acceleration type power generation device (power generation device) according to the present invention will be described. 2 is a plan view of the power generation apparatus 101 according to the embodiment (with the upper half blade omitted), FIG. 3 is a left side view of the power generation apparatus 101, and FIG. 4 is a rear view of the power generation apparatus 101. The downstream side, the rear side, a view seen from the outlet side of running water, tidal currents, etc., with the blades in the latter half omitted, and the power generation apparatus 101 includes a float 102 incorporating the above-described generator 1, A pair of water wheels 104 disposed on both sides, a pair of skids 106 disposed below the float 102, a pair of meandering prevention plates 108 as a lower raised body, and a guide plate 109.

  The float 102 floats in the water W even if it includes the generator 101 and various devices or members, and has a size that allows the float 102 to float stably even when running water, tidal currents, and the like are present. When the float 102 is floated on still water, the draft line D of the float 102 matches the water surface. The front side of the float 102 (upstream side, front side, entrance side for running water, tidal current, etc.) has a shape that becomes narrower in width (size in the left-right direction) as it goes forward, and has a gentle curve R1 in plan view. It has a shape to draw. This curve R <b> 1 swells outward and is symmetrical with respect to the center line in the front-rear direction of the float 102. That is, the front surface F of the float 102 has a curve R1 that is smoothly connected from the forefront portion to the adjacent portions of the water turbines 104 on both sides. The rear side of the float 102 has a shape related to the curve R2 which is the same as the curve R1 except that the width becomes narrower as going back.

  In addition, the float 102 includes an arm 121 extending in the left-right direction and a sub-float 122 for preventing pitching or rolling of the float 102 at the rear.

  Furthermore, the float 102 includes two hooks 123 for lifting and moving in the front and rear. Of these, the front hook 123 also serves as a fixed portion of the rope T from the shore. The hook on the far side from the shore of the previous hook 123 is disengaged from the float 102 when the water level is higher than the set value, and this disengagement automatically comes to the shore in case of abnormalities such as water increase or rapid flow. ing. Further, when the output related to power generation becomes zero, communication means (for example, a mobile phone or a wireless communication device) in the float 102 not shown transmits to a predetermined contact.

  Furthermore, a terminal 124 for electrical output connected to a cable (not shown) is installed at the rear part of the float 102.

  In addition, a protrusion 125 that protrudes to the left and right is formed at the center of the float 102. A shaft 126 is passed through each projecting portion 125 so as to face in the left-right direction. In each shaft 126, the outer end portion is exposed, and the remaining portion is located inside the float 102. The inner end of each shaft 126 is connected to the generator 1 via a speed increaser (not shown). The speed increaser collects the rotational force from each shaft 126 and transmits the rotational driving force to the coupling 67 of the generator 1. In the speed increaser, a timing belt mechanism is used. The speed increaser transmits the rotational force to the coupling 67 even when the rotational force is not applied to one of the shafts 126.

  A water wheel 104 is connected to the outer end of each shaft 126. Each water wheel 104 includes a plurality of blades 141 that receive the flow of flowing water, a housing 142 that connects each blade 141 and the shaft 126, and a water turbine vent 143 that is attached to the outside of each blade 141.

  The housing 142 has a disk portion that is arranged along the front-rear direction. Each blade 141 is disposed along the radial direction of the disk portion. In the disk portion, the base of each blade 141 is fixed.

  The water turbine vent 143 is a disk-like plate that is commonly attached to the blades 141 on the outside thereof, and is arranged so that the center thereof coincides with the center of the shaft 126. The water turbine vent 143 covers the outside of the housing 142 along the front-rear direction.

  Each water wheel 104 is arranged at a position where the draft line D passes through the lowermost part of the disk part of the housing 142 (the uppermost part of the vertical blade 141), and the lower half part enters the water W, Half is above water W.

  On the other hand, a pair of skids 106 are attached to the lower surface of the float 102. Each skid 106 is a frame combined to form a rounded rectangle. The skids 106 are respectively attached to the left and right of the lower surface of the float 102 in a state along the front-rear direction. The vertical length of each skid 106 is such that the lower surface of the skid 106 is below the lowermost portion of each water wheel 104, so that each water wheel 104 is damaged by contacting the bottom B with the skid 106. The situation can be prevented.

  In addition, meandering prevention plates 108 are attached to the skids 106, respectively. Each meandering prevention plate 108 is a plate-like member, and is fixed in a state along the front-rear direction. Therefore, each meandering prevention plate 108 stands up from the bottom of the float 102, and the inner surface (inner surface) of each meandering prevention plate 108 is along the longitudinal direction of the float 102.

  Further, a stopper 192 having a support portion 191 protruding forward is attached to the front portion of each skid 106, and the rear portion of the guide plate 109 is connected to the stopper 192 via a hinge 193. The guide plate 109 is a plate-like member, and its width (length in the left-right direction) is slightly smaller than between the outer surfaces of both water turbines 104. The guide plate 109 is normally supported by a stopper 192 and has a predetermined inclination that is forwardly lowered. However, the guide plate 109 can rotate around the hinge 193, and the bottom of a river, the sea, or the like due to a decrease in the amount of water W or the like. When B comes into contact (see the alternate long and short dash line with respect to the bottom B in FIG. 3), the inclination decreases (refer to the alternate long and short dash line with respect to the guide plate 109 in FIG. Further, when the bottom B approaches, the lower part of each skid 106 touches the bottom B, and the lower part (front part) of the guide plate 109 fits above the lower part of each skid 106.

[Operation of power generators, etc.]
Such a power generation apparatus 101 mainly operates as described below.

  First, the power generation apparatus 101 is floated on the water W so that the longitudinal direction of the float 102 and the water wheel 104 follow the flowing water, the tidal current, etc., and the terminal 124 is connected to the cable, and the rope T is connected to the rocks on the shore, concrete columns, piles, etc. Secure to. The power generator 101 is preferably sized to be transported by a small truck, is light enough to float on the water W, and can be installed simply by connecting the cable and the rope T and floating on the water W. It is also easy to install a plurality or a large number of power generation devices 101. In addition, the power generator 101 can be easily moved or reinstalled.

  After the installation, the power generation apparatus 101 floats and stabilizes so that the vicinity of the water line D is the water surface and the longitudinal direction of the float 102 is along the water flow. Then, each blade 141 below the water surface is sequentially subjected to force by the water flow, and the water wheel 104 rotates.

  At this time, since the water turbines 104 are arranged on both sides, it is possible to receive equal hydraulic power on both sides, and the balance becomes good and the stability becomes high. Further, since the upper half of the water wheel 104 is above the water line D of the float 102 and comes out above the water W, the blade 141 in the water W receives force from the water flow and the water wheel 104 rotates. In addition, the blade 141 on the opposite side does not receive the same resistance, and can rotate in the air with less resistance, and the water wheel 104 can be rotated in a smooth and efficient state.

  Further, since the front surface F of the float 102 has a curve R1 that becomes narrower as it goes forward, the water flow in front of the float 102 is distributed to the left and right water turbines 104, and the water flow to each water turbine 104 is Can be accelerated and water flow can be collected in each turbine 104. Further, since the rear surface S of the float 102 has the same shape as the front surface F and has the same curve R2 as the curve R1, a part of the water flow that has passed through each water turbine 104 can be guided to the rear of the float 102. it can.

  Moreover, since a pair of meandering prevention plates 108 (downward standing portions) having inner surfaces along the longitudinal direction (water flow) of the float 102 are installed on the left and right of the lower portion of the float 102, It can be guided along the float 102 (straightly) between the meandering prevention plates 108 or in the rear thereof, and the accelerated straight water flow is subjected to the resistance of each turbine 102 and the flow velocity is reduced. The weakened water flow (guided by curve R2) can be attracted and accelerated (Bernoulli's theorem), and as a result, the resistance of the blades 141 rotating from the bottom of each turbine 104 to the rear is reduced from the water W And the water flow through each turbine 104 can be accelerated. In addition, since a straight flow is formed below the float 102 (between each meandering prevention plate 108), the float 102 is prevented from meandering along the flow, and the stability of the float 102 is further increased. Can be increased.

  Further, since a guide plate 109 is installed at the front of the meandering prevention plate 108 so as to be lowered toward the front, the water flow below each meandering prevention plate 108 is passed between the meandering prevention plates 108. The water flow can be collected also in the vertical direction (three-dimensionally), and the water flow between and behind the meandering prevention plates 108 can be further increased. The resistance in 104 can be reduced, the water flow through each water wheel 104 can be further accelerated, and the meandering prevention performance of the float 102 can be further improved. Further, since the guide plate 109 is also arranged in front of each turbine 104, the lower water flow can be collected in an accelerated state with respect to each turbine 104 as well.

  In addition, since each water wheel 104 has a water wheel vent 143, the water flow passing through each water wheel 104 does not escape to the outside, but can hit the blade 141 in the water W. In addition, since each water wheel 104 is adjacent to the side surface of the float 102, the water flow can be made to hit the blade 141 in the water W without letting the water flow inward.

  Then, by guiding the water flow to each turbine 104 in an accelerated state as described above, each turbine 104 can be rotated with good efficiency, and the rotational force generated by this rotation is generated by the shaft 126 and the increase. Since it is transmitted to the generator 1 via the speed machine and used for power generation, it is possible to execute power generation with good efficiency. In addition, since power generation is performed by the above-described inversion type (coreless coil type) generator 1, power generation can be performed in a more efficient state. Due to such efficient rotation or power generation, the power generation apparatus 101 can sufficiently generate power even if it is installed in a place where only flowing water or tidal currents with a moderate flow rate of about 1 meter per second (m / sec) exist. it can.

  In addition, since a communication means for transmitting to a predetermined communication destination when power generation is stopped is provided, it is possible to grasp the occurrence of power generation stoppage due to an emergency situation, theft, malfunction, etc. even in a remote place, and the safety related to the power generation apparatus 101 is further enhanced. However, the power generation apparatus 101 that can be easily moved and installed can be appropriately operated so as to be able to cope with an emergency situation, theft, or malfunction even if it is not always watched.

[Characteristics and effects of power generation equipment]
The above power generation apparatus 101 includes a float 102 on which the generator 1 is mounted, and water turbines 104 that are respectively disposed on both sides of the float 102 and connected to the generator 1. A pair of meandering prevention plates 108 extending in the longitudinal direction of the float 102 is formed and separated, and a guide plate 109 that is inclined downwardly toward the front is provided in front of the meandering prevention plate 108 and each water wheel 104. It is installed so as to be rotatable, and a high-speed water flow is formed between the meandering prevention plates 108 than the water flow downstream of each water turbine 104, and the high-speed water flow pulls the water flow downstream of each water wheel 104. I am doing so. Therefore, the stability of the float 102 can be improved, and the stagnation of the water flow downstream of each water wheel 104 can be accelerated by drawing in to promote the flow and assist the rotation of each water wheel 104, which is extremely efficient. It is possible to perform power generation in the power generation apparatus 101 in such a state.

  In addition, since the front surface F of the float 102 has a shape (curve R1) that becomes narrower toward the front, the water flow at the upper front of the float 102 is distributed and supplied to each turbine 104 in an accelerated state. In addition, power generation in the power generation apparatus 101 can be performed in a more efficient state.

  Further, since the water wheel 104 has the plate-shaped water wheel vent 143 on the outside, the water flow in the water wheel 104 can be concentrated on the blade 141 without taking it outside, and the action of the flowing water on the water wheel 104 is further increased. As a result, the efficiency of the power generation apparatus 101 can be further improved.

  In addition, since anomalous communication means for transmitting when the generator 1 stops power generation is installed, it is possible to grasp the power generation stop even in a remote place, and respond to the situation of power generation stop in the power generation apparatus 101. Can do.

[Example of power generator change]
In addition, the other form of this invention formed mainly by changing said electric power generating apparatus is illustrated.

  Omitting the gearbox and connecting the shaft and generator directly or without speeding up, omitting one or both of the protrusions in the float, omitting the sub-float or arm, omitting the skid The serpentine prevention plate also plays the role of skid.

  The communication means may adopt a communication method by e-mail or Internet telephone, may communicate when the hook is removed, or may have a different communication destination, communication content or communication method depending on each case. . Further, a lamp or a siren that emits light when the hook is removed and / or when power generation is stopped may be installed together with the communication means or instead of the communication means.

  An anti-meander plate and / or skid is integrated with the float. That is, at least the inner surface is provided with a pair of lower standing parts (ribs) along the longitudinal direction of the float in the lower part of the float so that a straight water flow is formed between the lower standing parts, or the water turbine is formed by the lower standing part. To protect. About a pair of meandering prevention plates (downwardly raised solids), each lower part is connected by a plate or a bar to form a whole or part of a box shape, and another downwardly raised solid along the longitudinal direction of the float is arranged between them. To do. For the meandering prevention plate and guide plate, a curved surface or a bent surface is used in part or in whole. Also, for each meandering prevention plate, the width and / or height (vertical length) of the inner surface decreases as it goes backward, the length and ratio in the longitudinal direction relative to the entire float increase, Decrease the distance as you go down (and make it diagonal), or vice versa, or change the arrangement relative to the float. Thus, even if the meandering prevention plate is box-shaped and further has a downwardly raised solid, or has a curved surface or the like, or has a changed width etc., each meandering prevention The inner surface of the plate guides the water flow along the longitudinal direction of the float, and a water flow along the longitudinal direction of the float is formed between the meandering prevention plates. A stopper that restricts the rotation of the guide plate is provided only on one side, or a connecting means such as a chain or a rope.

  The power generation device according to the present invention is relatively small and light while being able to accelerate the water flow to the water turbine, and thus can be easily installed side by side in a stream or tide where there is a steady water flow. In addition, since it can generate electricity at a moderate flow rate, it can be installed in large numbers on many rivers and coasts. Further, since the water flow utilized by the power generation device is accelerated by the straight water flow and flows downstream of the power generation device, it is possible to arrange the power generation devices further downstream of the power generation device. Compared with wind power, there are many places where there is a constant flow all day or year, so it is easier to select the installation location than wind power generators, and the power generators are extremely efficient. Can be activated. In addition, the power generation device of the present invention generates power using a flowing water regardless of day, night, season, latitude, etc., unlike solar power generation, which can generate power only when the sun goes out, and the efficiency is low when it is weak light. It is also possible to operate the power generator in a very efficient state.

101 Power generation device 102 Float 104 Water wheel 108 Meandering prevention plate (Lower riser)
143 Water Vent

Claims (4)

A float with a generator,
A water turbine disposed on each side of the float and connected to the generator;
At the bottom of the float, a pair of downwardly raised solids are formed and separated on both inner sides along the longitudinal direction of the float,
In front of the lower raising body and the water wheel, a guide plate inclined so as to become lower as it comes forward is rotatably installed,
Flowing water characterized in that a water flow at a higher speed than the water flow downstream of the water wheel is formed between the lower raised bodies, and the water flow on the downstream side of the water wheel is pulled by the high speed water flow. Accelerated power generator. The running water acceleration type power generator according to claim 1, wherein the front portion of the float has a shape that becomes narrower toward the front. The running water accelerating power generator according to claim 1 or 2, wherein the water turbine has a plate-shaped water turbine vent on an outer side. 4. The running water acceleration type power generator according to any one of claims 1 to 3, further comprising anomalous communication means for transmitting when the generator stops power generation.

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