JP2009228608A - Hydraulic power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized hydraulic power generation device capable of solving a floatage problem affecting power generation and a sedimentation problem of earth, sand and the like which are problems in hydraulic power generation and providing good power generation efficiency by adding a means making flowing water energy more effectively utilized for power generation without making a device large in scale. <P>SOLUTION: This device is provided with a hydraulic turbine section 30 having a hydraulic turbine with a rotary shaft in a direction perpendicular to water flow and having a square tube shape outer circumference part, a string shape screen section 10 arranging plate shape long members for preventing flow-in of floatage in parallel with keeping inclination angle to water flow, and a water introduction section 20 provided with a plate shape water introduction member to introduce flowing water to a zone at a side contributing rotary force of a hydraulic turbine. A downstream flowing water guidance section 100 accompanied by a plate shape member projecting with keeping open angle toward a downstream direction in angle range form 30 to 70 degrees is attached at both side part outsides of the hydraulic turbine section 30 as a means reducing harmful influence to hydraulic turbine rotating force of winding-around of the flowing water from an outside of the hydraulic turbine rear side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a small hydroelectric generator that does not need to be accompanied by a dam, a weir, or the like and can solve drifting matter problems and sedimentation problems such as earth and sand in hydroelectric power generation.

  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 buried fossil energy resources and the problem of deterioration of the global environment caused by discharged carbon dioxide. 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. However, many of the conventional small hydroelectric generators have been reduced in size by following the idea of a power generation method using a conventional dam as proposed in Patent Document 1, Patent Document 2, and the like. In other proposals, for example, as in the proposals of Patent Document 3, Patent Document 4, Patent Document 5, etc., it is necessary to accompany a weir, a water conveyance facility, etc., so installation and use are difficult only under extremely limited conditions. There is a problem that there is. In addition, if you try to generate electricity using running water from rivers, the problem of drifting materials and sediment accumulation is an unavoidable problem. Even if it is not a direct problem with hydroelectric power generation equipment, It is considered that this is a problem that must be solved.

In other words, many conventional small hydroelectric generators are difficult to install unless accompanied by a dam or water conduit, and can only be installed and used under extremely limited conditions. And problems that countermeasures after installation are not fully taken into account, for example, problems such as flow obstruction and equipment failure caused by drifting objects such as garbage and driftwood, sediment accumulation problems, heavy rain, etc. There is a problem that countermeasures for problems such as abnormal water increase are not fully considered. In order to solve this, the present inventor has already proposed as Patent Document 6. Although this proposal is worthwhile as a solution, it is thought that further improvement in power generation efficiency will be required as the importance of small hydroelectric power generation equipment increases.
JP 2002-295356 A JP 2003-222067 A JP 7-236255 A JP 2003-269315 A JP-A-2005-320883 JP 2008-031879 A

  The problem to be solved by the present invention is that drifting material that affects power generation, which is a problem in hydropower generation, when generating electricity using flowing water energy in a general inclined flowing water section other than the vicinity of a weir and a stepped portion such as a river A compact hydroelectric generator that can solve problems and sedimentation problems such as earth and sand, can be expected to have good power generation efficiency by adding means that makes it possible to use flowing water energy more effectively for power generation, without making the equipment large It is to provide.

  In order to solve the above-mentioned problems, the present inventor can solve the drifting problem affecting sedimentation and sedimentation problems such as earth and sand, which are problems in small hydropower generation, and can be widely used in rivers and irrigation canals. Based on the hydroelectric power generation apparatus of Patent Document 6 that the present inventor has already applied for as an apparatus, it is possible to improve the power generation efficiency by adding a means that allows the flowing water energy to be used more effectively for power generation. The following features are expected as a small hydroelectric generator.

  The hydraulic power generation apparatus of the present invention includes a water turbine having a rotating shaft that is orthogonal to the water flow and parallel to the water surface and that is rotatably supported at both ends of the rotating shaft. A plate-like long member for preventing the inflow of drifting substances that have a water turbine portion whose outer peripheral portion is in the form of a rectangular tube and that prevents rotation of the water wheel at a portion disposed on the water side. A streak screen portion having a slant angle in the range of about 30 to 60 degrees and arranged in parallel at intervals of a range of about 20 to 50 mm; and a downstream of the streak screen portion and the water turbine In the area facing the water wheel of the water turbine at the part located above the water, the water flow of the half of the area where the hydraulic power of the flowing water does not work effectively on the rotational force of the water wheel is cut off, and the water flow of the water wheel is blocked. A plate to allow water to be introduced to the area that contributes to the rotational force Hydroelectric power generation characterized in that it has means that can be fixed to the bottom of the ground, including a water conveyance site where the water conveyance member is inclined and a generator that can generate power by transmitting the rotational force of the turbine. Further, as a means for reducing the adverse effect on the turbine rotation force due to the flowing water flowing from the outside behind the turbine, the opening angle is approximately 30 to 70 degrees toward the downstream side on both sides outside the turbine section. The most important feature is that a downstream water flow guiding portion with a plate-like member protruding at an angle in the range is attached.

  In addition, as a means for improving the water collecting effect, a plate-like member that protrudes toward the upstream direction toward the upstream side on both sides of the streak screen portion with an opening angle of about 50 degrees or less. It is characterized by the fact that an upstream flowing water guiding part with an attached is attached.

  In addition, in the case of the streak screen part in the form in which the plate-like members of the streak screen part are arranged at an inclination angle from the central part toward both sides, the entanglement at the central part of the drifting material As a means for avoiding this problem, there is a flotage guiding portion with a rod-like or plate-like long member having an inclination angle in the range of about 30 to 60 degrees in the vertical axis direction in front of the central portion of the streak screen portion. It is attached.

  According to the present invention, in the case of power generation using flowing energy in a general inclined flowing water part other than the vicinity of a weir and a step part in rivers and irrigation canals, a drifting object problem that affects power generation, which is a problem in a hydroelectric power generation apparatus, and It is possible to provide a small hydroelectric generator that can solve sedimentation problems such as earth and sand, can be used effectively for power generation, and can be expected to have good power generation efficiency.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 and FIG. 2 are explanatory views of an example in the case where an upstream flowing water guiding portion is additionally provided in the apparatus of the present invention. FIG. 3 shows an example of the case where the plate-like members of the streak-like screen part are arranged at an inclination angle from the central part toward both side parts, and the drifting substance guiding part is attached in front of the central part. It is explanatory drawing. FIG. 4 is an explanatory view of a shape example of a water wheel used in the apparatus of the present invention. A cover for the external rotational force transmission unit is provided but omitted.

[Example 1]
First, as an embodiment of the present invention, an example in which an upstream flowing water guiding portion of the apparatus of the present invention is additionally provided will be described with reference to FIGS. 1 and 2. The device 1 of the present invention has a rotating shaft 31a that is orthogonal to the water flow and parallel to the water surface as a main part of the device main body, and is rotatably supported at both ends of the rotating shaft. The water wheel 31 is incorporated, and the outer peripheral part has a water wheel portion 30 having a rectangular tube shape, and the inflow of drifting objects that obstruct the rotation of the water wheel 31 is prevented at the portion disposed on the water side. A streak-like screen portion 10 having a plate-like long member 11 having an inclination angle in the range of about 30 to 60 degrees and an interval d in the range of about 20 to 50 mm arranged in parallel. In the region that is located downstream of the portion 10 and on the water side of the turbine 31 and that faces the running water of the turbine, the hydraulic power of the flowing water does not act effectively on the rotational force of the turbine 31. The inflow is shut off and the flowing water is turned into the rotational force of the water turbine 31. And a generator 51 capable of generating electric power by transmitting the rotational force of the water turbine. Is surrounded by the skeleton member 41 and the plate-like member 42 in such a form that the resistance to flowing water is small. And as a means to reduce the bad influence on the turbine rotational force due to the running water flowing from the outside of the rear of the turbine, the opening angle θ2 is an angle in the range of about 30 to 70 degrees toward the downstream side toward the outside of both sides of the turbine section 30. A downstream flowing water guiding portion 100 is attached with a plate-like member 101 that protrudes in the manner described above. Further, as a means for improving the water collecting effect, there is a plate-like member 111 that protrudes toward the upstream side at both sides of the streak screen portion 10 toward the upstream direction with an opening angle θ3 of about 50 degrees or less. An upstream flowing water guiding portion 110 is attached. And it has the means which can provide the apparatus foundation 60 in the water bottom ground etc. 70 and can be fixed.

[Example 2]
Next, as another example of the embodiment of the present invention, in the case where the plate-like members of the streak screen portion are arranged at an inclination angle from the central part toward both side parts, the drifting object is located in front of the central part. An example in the case where a guidance site is attached will be described with reference to FIG. In the case of the streaky screen portion in which the plate-like members of the streaky screen portion are arranged at an inclination angle from the central portion toward both side portions, the device 1 of the present invention is entangled in the central portion of the drifting material. As a means for avoiding this, the drifting object induction with the rod-like or plate-like long member 121 having an inclination angle θ4 in the range of about 30 to 60 degrees in the vertical axis direction in front of the central portion of the streak screen portion 10 is performed. A part 120 is attached. In addition, since this invention apparatus 1 is the same as that of Example 1 except the upstream flowing water induction | guidance | derivation site | part 110 except for the above, other description is abbreviate | omitted. Further, in the second embodiment, as in the first embodiment, the upstream flowing water guiding portion 110 may be provided.

Hereafter, what should be specially described for the main parts and members.
Regarding the streak screen portion 10, the material is preferably a stainless steel or non-ferrous metal material, an alloy material, engineering plastic having high strength and durability and rust resistance, or a plastic composite material such as FRP or CFRP. However, it may be steel that has been subjected to rust prevention treatment, and is not limited as long as it is a material that can achieve the object of the present invention.

  With respect to the water conveyance site 20, it is also preferable to arrange a water conveyance 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. And as a material, it uses suitably from what was described by the streaky screen site | part 10. FIG.

  As shown in FIG. 4, with respect to the water turbine part 30, the main part is a rotating shaft 31a and a long thin plate-like long member whose cross-sectional shape is a curved or bent blade capable of effectively converting hydraulic power into rotational force. It consists of the disk-shaped member 31c which supports the member 31b and the blade member 31b at both ends, and is fastened to the skeleton member 41 via a bearing member as shown in FIGS. The outer peripheral portion has a rectangular tube shape formed by the plate-like member 42. The number of blade members 31b 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. 4J, a configuration in which a cylindrical member 31c is disposed so as to be in contact with the inside of the blade member 31b may be used as appropriate. And as a material, it uses suitably from what was described by the streaky screen site | part 10. FIG.

As for the skeleton member 41 and the plate-like member 22, materials described in the streaky screen portion 10 are appropriately used. The cross-sectional shape of the skeleton member 41 is preferably a □ type, but an L type or an H type can also be used.

  The generator 51 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 water turbine 30, for example, a mechanism combining a gear 52 and an endless chain or a gear belt 53 is conceivable as shown in FIGS. Any mechanism that can transmit the rotational force to the generator is not limited. Further, a speed increaser, a bearing, a clutch, a coupling, and the like are appropriately disposed between the gear 52 and the generator 51.

  As shown in FIG. 1, with respect to the downstream flowing water guiding portion 100, a shape retention reinforcing member 102 is attached to the upper portion and the lower portion for maintaining the shape so as not to cause water flow resistance. In addition, the form of the form retention reinforcing member 102 is not limited as long as the object of the present invention can be achieved. Moreover, as a material, it uses suitably from what was described by the streak-like screen site | part 10. FIG.

  As shown in FIGS. 1 and 2, the upstream flowing water guiding portion 110 is attached along the front end portions on both sides of the streak screen portion 10. And it reinforces suitably with a reinforcing member for form maintenance. In addition, the protrusion dimension to the exterior side of the upstream flowing water guiding part 110 is set to be smaller than the protrusion dimension of the downstream stream water guiding part 100 to the outside. Moreover, as a material, it uses suitably from what was described by the streak-like screen site | part 10. FIG.

  As shown in FIG. 3, the drifting material guiding part 120 is fixed to the holding reinforcement member 12 of the streak screen part 10 and the lower part is fixed to the foundation 60 or the like with a plate or the like via a plate or the like. The Further, in order to maintain the form, the intermediate portion is appropriately reinforced with a reinforcing member. And as a material, it uses suitably from what was described by the streaky screen site | part 10. FIG.

  As a method for fixing the apparatus, a method of fixing the apparatus to the apparatus base 60 with a bolt or the like is conceivable when it is installed in a river, but any other method can be used as long as the object of the present invention can be achieved. And the device foundation 60 may be fixed to the water bottom ground 70 by placing a foundation pile depending on the situation.

It is explanatory drawing of the example in case an upstream flow water induction | guidance | derivation site | part is added and attached by this invention apparatus. (A) Plan view (B) Side sectional view It is explanatory drawing of the same example as FIG. (C) Front view (D) is a side view It is explanatory drawing of the example in the case of the form where the plate-shaped member of the streak-like screen part is arranged at an inclination angle from the central part toward both side parts, and the drifting substance guiding part is attached in front of the central part. is there. (E) Plan view (F) Side sectional view It is explanatory drawing of the example of a shape of the water wheel used for this invention apparatus. (G) Side sectional view of one embodiment (H) Front view of example of (G) (I) Front view of an example in which the same member as the disk-shaped member at the side end is disposed in the middle (J) (G) Side surface sectional view of an example of adding a cylindrical member to the example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Hydroelectric power generation apparatus 10 of this invention: Streaky screen part 11; Plate-like elongate member 12; Holding reinforcement member 20; Water conveyance part 21; Plate-like water conveyance member 22; Water conveyance auxiliary member 30; Water wheel part 31; Rotating shaft 31b; blade member 31c; disc-like member 31d; cylindrical member 41; skeleton member 42; plate-like member 51; generator 52; gear 53; endless chain or gear belt 60; device foundation 70; Downstream flowing water guiding part 101; flowing water guiding member 102; shape maintenance reinforcing member 110; upstream flowing water guiding part 111; flowing water guiding member 120; drifting substance guiding part 121; rod-like or plate-like long member

Claims (3)

  A water turbine having a rotating shaft that is orthogonal to the water flow and parallel to the water surface and in which both ends of the rotating shaft are rotatably supported is incorporated, and the outer peripheral portion has a rectangular tube shape. The plate-like long member for preventing the inflow of drifting substances that obstruct the rotation of the water wheel at the portion disposed on the water side is provided with a water wheel portion that forms an inclination angle of about 30 with respect to the water flow. A streak screen portion having an inclination angle in the range of ˜60 degrees and arranged in parallel at an interval in the range of about 20-50 mm, and a portion disposed downstream of the streak screen portion and on the water side of the water wheel In the area facing the running water of the turbine, the area where the flowing water blocks the direct inflow of about half of the area where the hydraulic power does not work effectively on the rotational power of the turbine, and the flowing water contributes to the rotational power of the turbine Inclined plate-shaped water-conveying members to allow water to be introduced A hydroelectric power generation apparatus comprising: a water conveyance portion, a power generator capable of generating power by transmitting the rotational force of the water turbine, and a means capable of being fixed to a water bottom ground or the like. As a means for reducing the adverse effect on the rotational force of the water turbine due to the flowing water flowing from the rear outside, it protrudes toward the downstream side at both sides of the water turbine portion at an opening angle of about 30 to 70 degrees. A hydroelectric generator having a downstream flowing water guiding portion accompanied by a plate-like member.   As a means for improving the water collecting effect, the upstream flowing water induction is accompanied by a plate-like member that protrudes in the upstream direction toward the upstream side on both sides of the streak screen portion with an opening angle of about 50 degrees or less. The hydroelectric generator according to claim 1, further comprising a part.   As a means for avoiding the entanglement of the drifting material in the central part in the case of the linear screen part in the form in which the plate-like members of the linear screen part are arranged at an inclination angle from the central part toward both side parts. In addition, a drifting substance guiding portion with a rod-like or plate-like long member having an inclination angle in the range of about 30 to 60 degrees in the vertical axis direction is provided in front of the central portion of the streak screen portion. The hydroelectric power generator according to claim 1 or 2, characterized by the above.

Images