JP2009114937A - Hydraulic power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydraulic power generation device which is not a large scale device, can be easily installed even at a flat part, can cope with floatages, and has good flowing water energy usage efficiency by solving a problem that a continuous wall is included and the floatages exist when flowing water energy in an irrigation channel or the like is used. <P>SOLUTION: The hydraulic power generation device includes a hydraulic turbine including a rotary shaft having its axial direction in a direction perpendicular to a water flow and in parallel with a water surface includes a string shape screen for preventing the floatage from flowing-in having plate shape long members disposed at the most upstream side in parallel and arranged obliquely to the water flow, a water introduction section obliquely provided at a downstream of the screen so that flowing water can be led to a zone at a side where the same can contribute to a rotary force of the hydraulic turbine, and a generator, and includes a means for fixing on a bottom or an erect wall of the irrigation channel. A water shut-off member having a height aiming at a range of an upper part rotation height from the rotary shaft of the hydraulic turbine is provided in a clearance of the erect wall of the irrigation channel or the like at the upstream side of the hydraulic power generation device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a small-sized hydroelectric power generation apparatus that generates electric power by using flowing water of an artificial waterway having a continuous rising wall on a side portion such as an irrigation waterway or a drainage groove.

  In recent years, utilization technologies such as hydropower, wind power, and solar energy, which are environmentally friendly natural energy, have attracted attention due to the problem of depletion of reserve resource energy and the problem of deterioration of the global environment due to discharged carbon dioxide and the like. Regarding hydropower use, it has been used for a long time by hydroelectric power generation using the dam method. However, the dam method requires huge construction costs and is also a problem of sediment caused by dams and sediments, and a problem of the destruction of the natural environment accompanying dam construction. Therefore, new establishment in the future is not easy. For this reason, small hydroelectric generators have attracted attention, and proposals have already been made for small hydroelectric generators that use the flow energy of artificial waterways that have continuous rising walls on the sides of irrigation channels and drainage channels. In recent years, attention has been focused on the fact that irrigation channels and the like have continuous rising walls on both sides, and there are also debris such as garbage and plants. It is not easy and the number of proposals is not too large. As an example of the previous proposal, for example, as seen in Patent Document 1, there is one that focuses on the improvement of the problems of the traditional water turbine, but for example, Patent Document 2, Patent Document 3, Patent Document 4, Patent As seen in Document 5 and Patent Document 6, the method using the head is the mainstream. However, in the example of Patent Document 1, it cannot be said that the water receiving part is cup-shaped and is not very efficient, and the apparatus is complicated, which requires a large amount of power generation capacity and can handle drifting objects that inhibit rotation of the water turbine. There is a problem that it is not easy. On the other hand, in the method using the head part, installation is difficult without the head part, the head part is not so many, the installation place is limited, and many of the proposed methods fit the head part to the device. There is a problem that remodeling work is required and the apparatus tends to be large for the power generation capacity.

For this reason, when using the flowing water energy of an artificial waterway that has a continuous rising wall on the side part of a waterway, etc., it can be easily installed on a flat part, and the device does not become large, There is a demand for a hydroelectric power generation device that can easily cope with drifting objects such as garbage and plants that inhibit rotation and that has good utilization efficiency of running water energy.
JP 2002-115642 A JP 7-236255 A JP 2003-269315 A JP 2004-124829 A JP-A-2005-320883 JP 2007-64141 A

  The problem to be solved by the present invention is that, when using the flowing water energy of an artificial waterway having a continuous rising wall on the side part of the irrigation channel, etc. In light of the problem that there are also drifting materials such as plants, it can be easily installed on flat parts, the equipment does not become large, and it is easy to cope with drifting materials such as plants that impede the rotation of the water turbine. An object of the present invention is to provide a hydroelectric power generation device with good energy utilization efficiency.

  In order to solve the above-mentioned problems, the present inventor is based on the hydroelectric power generation apparatus already filed as a hydroelectric power generation apparatus (Japanese Patent Application No. 2007-163294) that can be used in a wide range of rivers and the like. Incorporating means for easily and effectively blocking the flowing water between the hydroelectric generator and the rising wall at the side of the side of the irrigation channel, etc., the effect can be exerted more in the flat part of the artificial channel such as the irrigation channel. The hydroelectric generator is characterized by the following.

  The hydroelectric power generation device of the present invention has a water turbine in a form having a rotary shaft that is orthogonal to the water flow and parallel to the water surface and that is rotatably supported at both ends of the rotary shaft, In addition, plate-like long members for preventing the inflow of drifting objects that hinder the rotation of the water wheel of the present apparatus at the portion disposed on the uppermost water side are arranged in parallel at intervals of about 20 to 50 mm. And a streak screen portion disposed at an inclination angle in the range of about 30 to 60 degrees with respect to the water flow, and a region facing the water flow of the water turbine at a portion disposed on the water side of the water turbine downstream of the portion. In order to block the direct inflow of about half of the area where the hydropower of the running water does not effectively act on the rotational force of the turbine, and to allow the flowing water to be introduced to the area that contributes to the rotational force of the turbine. The plate-shaped water guide member is inclined and the rotational force of the turbine is transmitted. Using a hydroelectric generator characterized by having a means capable of being fixed to the bottom or rising wall of a water channel or the like, and further upstream of the hydroelectric generator In order to insulate the gap between the rising wall of the irrigation channel on both sides and the main body of the hydroelectric generator, a water-impervious member with a gap between the rotating shaft of the turbine and the upper rotational height is attached. It is the most important feature.

  In addition, the streak screen portion and the water guiding portion are unitized to form a detachable form.

  In addition, the water-impervious member is configured to be rotatable about the hydraulic power generation device main body as a rotation axis.

  Further, the cross-sectional shape of the water-impervious member is a triangular shape or at least two triangular shapes, and the water-side side has an opening angle of about 40 to 70 degrees from the bottom side. It is characterized by that.

  According to the present invention, in the case of using the flowing water energy of an artificial water channel having a continuous rising wall on a side side of an irrigation channel or the like, there are also floating objects such as plants having a continuous rising wall on both sides. It can be easily installed even on flat parts, and the equipment does not become large, and it can easily cope with drifting objects such as plants that impede the rotation of the water turbine, and the loss of utilization of running water energy It is possible to provide a hydroelectric power generator that can be reduced, has good power generation efficiency, and can be easily installed even if the width of a water channel or the like changes somewhat, and can be easily attached and detached.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 are explanatory views of an example in which the water shielding member of the device of the present invention is configured to be rotatable. 3 and 4 are explanatory diagrams of examples in which the cross-sectional shape of the water-impervious member is triangular. FIG. 5 is an explanatory diagram enlarging the water shielding member. FIG. 6 is an explanatory view of a shape example of a water wheel used in the apparatus of the present invention.

First, a common apparatus main body other than the water shielding member will be described as an embodiment of the apparatus 1 of the present invention.
As shown in FIGS. 2, 4, and 6, the device 1 of the present invention has a rotating shaft 31 that forms an axial direction that is orthogonal to the water flow and parallel to the water surface. A plate-like shape that has a water wheel 30 in a form that is rotatably supported at both ends of the rotating shaft, and that prevents the inflow of drifting objects that obstruct the device at a portion disposed on the uppermost water surface. As shown in FIGS. 1 (B) and 3 (F), the long members 11 are arranged in parallel in the vertical direction or the horizontal direction at intervals of about 20 to 50 mm, and FIG. A), as shown in FIG. 4 (H), the streak screen portion 10 disposed with an inclination angle in the range of about 30 to 60 degrees with respect to the water flow, and FIG. 2 (D), As shown in FIG. 4 (H), the hydraulic power of the flowing water is in a region facing the flowing water of the water turbine at a portion disposed on the water side of the water turbine downstream of the portion. There is a plate-like water guide member 21 for blocking the direct inflow of about half of the region that does not effectively act on the rotational force of the water and allowing the water to flow to the region on the side that contributes to the rotational force of the turbine. It comprises a skeletal member 51 and a plate-like member 52 that are provided with an inclined water conveyance portion 20 and a generator 40 disposed at a position higher than the top end of the rising wall of the irrigation channel. As shown in FIG. 1 (B) and FIG. 3 (F), a hydroelectric generator characterized by having means capable of fixing the apparatus to a bottom 71 or a rising wall 72 such as a water channel is used. In addition, since it will not be limited if it is a form which can achieve the objective of this invention regarding the form which the said streak-like screen site | part and the water conveyance site | part are unitized and can be attached or detached, description is abbreviate | omitted.

[First Embodiment]
As the first embodiment, the device 1 of the present invention has the above-described characteristics of the device main body, and, as shown in FIGS. 1 and 2, the rising wall portions of the irrigation channels on both sides upstream of the device main body. As a water-impervious member for shielding the gap between the main unit and the device body, the water shielding plate 111 can be rotated around the device main body as a rotation axis, with the height in the range from the rotation axis of the turbine wheel to the upper rotation height. A water-impervious member A110, which is characterized in that it is configured, is disposed.

[Second Embodiment]
As a second embodiment, the device 1 of the present invention has the above-described characteristics of the device main body, and further, as shown in FIGS. 3 and 4, the rising wall portions of the irrigation channels on both sides upstream of the device main body. As a water-blocking member for blocking the gap between the device and the main body, the height is in the range from the rotation axis of the turbine wheel to the upper rotation height, and the cross-sectional shape is triangular or at least two sides of the triangle. There is provided a water shielding member B120 characterized by having a water shielding functional member 121 having an opening angle of about 40 to 70 degrees from the bottom side.

Hereafter, what should be specially described for the main parts and members.
When the screen streak is in a direction parallel to the water wheel shaft, the streak screen portion 10 has plate-like long members 11 arranged in parallel at substantially equal intervals as shown in FIGS. The central portion is fixed to the holding reinforcing member 12 and the both end portions are fixed to the skeleton member 51 in a form in which an angle in the range of about 30 to 60 degrees is formed on both sides from the central portion. And when the screen streak is perpendicular to the water wheel axis, as shown in FIGS. 3 and 4, the plate-like long members 11 are arranged in parallel at substantially equal intervals, and the upper and lower ends are arranged. The shape is held by the holding reinforcing member 12, and the upper end portion is inclined and fixed to the skeleton member 51, and the bottom portion and the side portion are surrounded by the thin plate member 52. Further, as the material of the streak screen portion 10, the skeleton member 51, and the thin plate member 52, stainless steel or non-ferrous metal material, alloy material, engineering plastic having high strength and durability, and plastic composite material such as FRP and CFRP, etc. Although it is conceivable and preferable, any other material can be used as long as the object of the present invention can be achieved. The cross-sectional shape of the skeleton member 51 is preferably a □ type, but an L type or an H type can also be used. In addition, the inclined form of the streak screen portion 10 is not limited to separation in the first embodiment and the second embodiment, and can be selected in either case.

  As shown in FIGS. 2 (D) and 4 (H), the water guide portion 20 has a rectangular tube shape at the outer peripheral portion by a thin plate-like member 52, and the plate-like water guide member 21 is inclined and disposed therein. It has a form. And the plate-shaped water conveyance member 21 is arrange | positioned for the range of about 30-60 degree of inclination angles. It is also preferable to arrange the water guide auxiliary member 22 in front of the lower portion of the water turbine 31 so as to improve the rotational force of the water turbine. Moreover, as a material, the thing according to the material of the said thin plate-shaped member 52 is used. The upper part may be formed in a screen shape by arranging plate-like long members in parallel at substantially equal intervals.

  As shown in FIGS. 2 (D), 4 (H), and 6, the water turbine 30 is mainly composed of a rotating shaft 31 and a long thin plate-like long member, and the cross-sectional shape effectively converts hydraulic power to rotational force. It consists of a curved or bent blade member 32 that can be converted, and a disk-shaped member 33 that supports the blade member 32 at both ends. As shown in FIGS. 2 (C) and 4 (G), the skeleton member 51 has a bearing member. It is fastened in a rotatable state via the. The outer peripheral portion has a rectangular tube shape formed by a thin plate-like member 52. The number of blade members 32 is preferably in the range of about 8 to 20, and the gap dimension from the shaft is preferably about 1/3 to 1/2 of the radius of rotation. Further, as shown in FIG. 6D, a configuration in which a cylindrical member 34 is disposed so as to be in contact with the inside of the blade member 32 may be employed. The material is preferably stainless steel, a non-ferrous metal material, an alloy material, or the like, but is not limited as long as the material can achieve the object of the present invention.

  The generator 40 is not limited as long as the object of the present invention can be achieved. As a rotational force transmission mechanism for transmitting the rotational force of the turbine 30, for example, a mechanism in which a gear 61 and an endless chain or a gear belt 62 are combined as shown in FIG. 1 is conceivable and preferable. The mechanism is not limited as long as it can be smoothly transmitted to the generator. Further, between the gear 61 and the generator 40, a speed increaser 63, a driven shaft 64, a bearing 65, a clutch, a coupling, and the like are appropriately disposed.

As shown in FIG. 1, the water shielding member A110 includes a water shielding plate 111 and a hinge mechanism member 112 that can rotate. In addition, this example is an example and is not limited as long as the water shielding plate is a rotatable form. Then, as shown in FIGS. 1B and 5A, an opening 113 is provided in the water shielding plate 111, and a slide plate 114 and a guide member 115 for sliding are attached to the rear surface to adjust the flow rate and drift. It is also preferable to facilitate the material processing. It is also preferable to ensure the pressure bonding between the water shielding plate 111 and the rising wall portion 72 using a spring material or the like. And as a material, the thing according to the material of the said thin plate-shaped member 52 is used.

As shown in FIGS. 3, 4, and 5 (B), the water-impervious member B <b> 120 includes a water-impervious functional member 121 and a reinforcing member 124 for maintaining the shape. In addition, this example is an example, and the cross-sectional shape of the water-impervious member has a triangular shape or at least two triangular shapes, and the water-side side has an opening angle of about 40 to 70 degrees from the bottom side. Not limited. It is also preferable to facilitate flow rate adjustment by providing a slide plate 122 that can slide and a guide member 123 for sliding. Moreover, as a material, the thing according to the material of the said water-impervious member A110 is used. And it is also preferable to attach an elastic member to both sides in order to improve the water shielding function. In addition, as a fixing method, for example, a method using the repulsive force of the elastic member or a method of fastening with a bolt or the like on the apparatus main body side can be considered, but a method capable of achieving the object of the present invention. There is no limitation as long as there is.

  The fixing method of the apparatus is preferably a fixing method that does not damage the bottom 71 and the rising wall 72 etc. of the irrigation channel as much as possible. For example, as shown in FIG. 1 (B) and FIG. A method is conceivable in which an adjustment member 83 is filled between the rising wall portion 72 and the upper frame member 51, and a fixing projection member 81 is attached to the frame member 51 and fixed by pressing with a bolt or the like 82. The method is not limited as long as the object of the invention can be achieved.

It is explanatory drawing of the example in case the water shielding member of this invention apparatus has comprised the form which can be rotated. (A) is a plan view and (B) is a front view. It is explanatory drawing of the same example as FIG. (C) is a side view, (D) is a side sectional view. It is explanatory drawing of the example in case the cross-sectional shape of the water-impervious member of this invention apparatus has a triangular shape. (E) is a plan view, and (F) is a front view. It is explanatory drawing of the same example as FIG. (G) is a side view and (H) is a side sectional view. It is explanatory drawing which expanded the water-impervious member part. (A) is the expanded top view in the case of the water-impervious member A, (B) is the expanded side sectional view in the case of the water-impervious member B It is explanatory drawing of the example of a shape of the water wheel used for this invention apparatus. (A) is sectional drawing of the example of 1 form, (B) (C) is a front view. (D) is a cross-sectional view of another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Hydroelectric power generation apparatus 10 of this invention: Streaky screen part 11; Plate-shaped elongate member 12; Holding reinforcement member 20; Water conveyance part 21; Plate-shaped water conveyance member 22; Water conveyance auxiliary member 30; Blade member 33; disk-shaped member 34; cylindrical member 40; generator 51; skeleton member 52; plate-like member 61; gear 62; endless chain or gear belt 63; speed increaser 64; driven shaft 65; bearing 71; Bottom portion 72 of irrigation channel, etc .; Rising wall portion of irrigation channel, etc. 81; Protrusion member 82 for fixing; Bolt etc. 83; Adjustment member 110;
111; water shielding plate 112; hinge mechanism member 113; opening 114; slide plate 115; guide member 120;
121; Water-impervious functional member 122; Slide plate 123; Guide member 124; Reinforcing member

Claims (4)

  It has a rotating shaft that forms an axial direction that is orthogonal to the water flow and parallel to the water surface, and has a water wheel that is rotatably supported at both ends of the rotating shaft, and is disposed on the uppermost water side. The plate-like long members for preventing the inflow of drifting substances that hinder the rotation of the water wheel of the present apparatus at the portion to be arranged are arranged in parallel at intervals of about 20 to 50 mm and about 30 to 60 with respect to the water flow. The streak screen portion disposed at an inclination angle in the range of degrees, and the hydraulic power of the running water in the region facing the running water of the water turbine at the portion disposed on the water upper side of the water turbine downstream of the portion. The plate-shaped water conveyance member is inclined to block the direct inflow of about half of the region that does not effectively act on the rotational force and to conduct the flow to the region that contributes to the rotational force of the turbine. And a generator capable of generating electricity by transmitting the rotational force of the water wheel Using a hydroelectric generator characterized by having a means that can be fixed to the bottom or rising wall of a water channel, and further, the rising wall of a water channel on both sides upstream of the hydraulic power generator Hydroelectric power generation, characterized in that a water-impervious member is provided in the gap with the height ranging from the rotation axis of the turbine wheel to the upper rotation height in order to shield the gap between the main body and the hydroelectric generator main body. apparatus.   The hydroelectric generator according to claim 1, wherein the streak screen portion and the water guiding portion are unitized and detachable.   The hydroelectric generator according to claim 1, wherein the water shielding member is configured to be rotatable about the hydroelectric generator main body side as a rotation axis.   The cross-sectional shape of the water-impervious member is a triangular shape or a shape of at least two sides of a triangle, and the water-side side has an opening angle of about 40 to 70 degrees from the bottom side. The hydroelectric generator according to claim 1 or 2.

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