JP6632809B2 - Photovoltaic power generation facilities and photovoltaic power generation methods - Google Patents

Description

  The present invention relates to a photovoltaic power generation facility provided with a solar cell panel, a gantry installed on farmland, and supporting the solar cell panel above a cultivated surface, and a photovoltaic power generation method.

The above-mentioned solar power generation facility is one that is installed on farmland and is capable of generating solar power while cultivating crops.
As this type of photovoltaic power generation equipment, for example, there is one disclosed in Patent Document 1. Japanese Unexamined Patent Application Publication No. 2005-163,049 includes a graffle as a mount installed on farmland and a solar cell module (solar cell panel) supported by the graffle.

JP 2014-236200 A

  The solar cell panel is supported by the gantry with the surface facing upward and inclined. If the surface becomes an inclined surface and the direction of the edge located at the lower end side of the solar cell panel becomes a direction along the horizontal plane, rainwater or dew falling or falling on the solar cell panel, etc. In order to prevent the droplets attached to the solar cell panel, such as pesticides and irrigation water applied to the solar cell panel, from adversely affecting the crop, it is necessary to provide a gutter along the lower edge.

  That is, when the direction of the lower edge is in a direction along the horizontal plane, the droplets attached to the surface of the solar cell panel fall down on the surface to cover the entire length of the lower edge. , And the solution is dripped from a portion over the entire length of the peripheral portion. If the droplets dripping from a portion along the entire length of the margin directly fall on farmland, they tend to fall on cultivated surfaces such as ridges. When the droplets fall on the cultivated surface, the soil jumps from the cultivated surface, and the jumped soil easily adheres to the crop. In the case of leafy vegetables, if soil adheres, the quality will decrease. In order to avoid quality deterioration, it is necessary to wash the adhered soil. Therefore, it is necessary to provide a gutter along the edge where the droplets are dropped, and to guide the rainwater or the like dropped from the edge to fall to a location off the cultivated surface.

  In addition, since the droplets drop from the entire length of the lower edge, the droplets flow in over the entire length of the gutter, so that a large, large-capacity large-sized rainwater does not particularly overflow. Gutter is required.

  An object of the present invention is to provide a photovoltaic power generation facility and a photovoltaic power generation method capable of generating power while making droplets of rainwater or the like attached to a solar cell panel less likely to affect crops.

Another characteristic configuration of the solar power generation facility of the present disclosure is:
Solar power generation equipment installed on farmland,
Solar panels,
And a gantry supporting the solar cell panel,
The solar cell panel has a horizontal surface such that one of the corners of the surface shape is located at the lowermost end , and two edges extending from the lowermost corner are inclined with respect to each other. Supported by the gantry in a state inclined to
A drain guide along an edge extending from the lowermost corner portion of the solar cell panel to the uppermost corner portion of the lowermost end is provided on the solar cell panel,
The gantry includes a pair of support frames that support the solar cell panel, a beam frame that supports the pair of support frames, a column that extends vertically from farmland and supports the beam frame, the column and the beam. A reinforcing member connected to the frame,
The solar cell panel and the beam frame are disposed adjacent to each other, and the drain port of the drain guide is located immediately above the reinforcing member, so that the droplet discharged from the drain port is the reinforcing member and A configuration is provided to flow down to the farmland along the support.

  According to this configuration, the droplets attached to the surface fall down on the surface toward the lowermost corner, so that the droplets attached to the surface are collected at the lowermost corner and in the vicinity thereof, and this corner and its corners are collected. It is dropped from the vicinity to the outside of the solar cell panel.

  Therefore, droplets adhering to the surface can be discharged to a narrow area of the farmland without providing a drain guide along the periphery. In other words, the droplets adhering to the solar panel are discharged to a place away from the cultivated surface, or are discharged collectively to a narrow area even on the cultivated surface. It can be made so that it does not affect the crop or hardly.

Considering that the amount of short-term rainwater is large, even if a drainage guide is provided along the edge, the edge is farther from the lowermost corner than in the direction along the horizontal plane. Since the amount of rainwater flowing into the area can be reduced, and it is easy to prevent rainwater from flowing over the entire length of the drain guide, overflow of rain water from the drain guide can be avoided or suppressed.
In addition, according to this configuration, the liquid droplets flowing out of the drain port are dropped on the reinforcing member, the liquid droplets dropped on the reinforcing member flow down along the reinforcing member to reach the support, and the droplets reaching the support are formed on the support. It flows down to the field. Since the strut is installed at a location off the cultivated surface such as a furrow, the structure can be accurately drained to a location outside the cultivated surface by a simple drainage structure utilizing the reinforcing member and the strut as drainage guide means.

  In the above configuration, it is preferable that the surface shape is a square shape.

  According to this configuration, when arranging a plurality of solar cell panels, it is difficult to form a useless space between the solar cell panels.

  In the above configuration, the gantry includes a pair of support frames extending in a horizontal direction, and the solar cell panel is configured such that an edge of the drain guide in a direction in which the drain guide extends extends along a respective axis of the pair of support frames. It is preferable that the support frame is supported by the pair of support frames while being inclined with respect to the support frame.

  According to this configuration, when the solar cell panel is supported by the pair of support frames, the solar cell panel is supported in a state where the direction along the lateral edge is inclined with respect to the direction along each axis of the pair of support frames. Therefore, one of the four corners can be easily made the lowermost corner by simply attaching the solar cell panel to the pair of support frames.

  In the above configuration, the gantry includes a pair of horizontally extending support frames spaced apart in a direction along the vertical direction, and arranged in a row spaced apart in a direction along the horizontal direction, and the solar cell panel comprises a pair. It is preferable that the supporting frame is received and supported from below by the supporting frame.

  According to this configuration, when the solar cell panel is supported by the pair of support frames, the pair of support frames are arranged at intervals in the vertical direction and the direction along the horizontal direction. Since the battery panel is received and supported by the pair of support frames from below, the surface of the solar panel can be inclined. That is, only by supporting the solar cell panel on the pair of support frames, the surface can be inclined without preparing a special posture adjusting member.

  In the above configuration, the gantry includes a beam frame that supports the pair of support frames, one of the pair of support frames is connected to an upper side of the beam frame, and the other supports the pair of support frames. Preferably, a frame is connected to the underside of the beam frame.

  According to this configuration, the height difference between the pair of support frames can be revealed by utilizing the beam frame as the spacer member. Therefore, a structure that does not require a special spacer member is simple. Can be inclined.

  In the above configuration, a pair of mounting legs connected across the pair of the support frames are protruded from the solar cell panel toward the pair of the support frames in a state where they are arranged in the width direction of the solar cell panel, It is preferable that the height at which one mounting leg of the pair of mounting legs protrudes from the solar cell panel is higher than the height at which the other mounting leg protrudes from the solar cell panel.

  According to this configuration, when the pair of mounting legs are connected to the pair of support frames, one of the four corners is changed to the lowermost corner due to the difference in the projecting height of the pair of mounting legs. Since it is a part, a special posture adjusting member can be dispensed with.

  The said structure WHEREIN: The edge part of the extending direction of the said drainage guide of the said solar cell panel is the state which inclined with respect to the direction along each axis of a pair of said support frames, and four of the said solar cell panels It is preferable that the pair of mounting legs be connected to the pair of support frames in a state where one of the corners is located lower than the other three corners.

  According to this configuration, if the pair of mounting legs are connected to the pair of support frames, the projecting heights of the pair of mounting legs from the solar cell panel are different, and Is inclined with respect to the direction along each axis of the pair of support frames, so that one corner portion is positioned lower than the other three corner portions, so that the lowermost corner portion And the other three corner portions have a large difference in height. As a result, the droplet smoothly falls on the surface toward the lowermost corner, and the droplet attached to the surface can be discharged smoothly.

  In the above configuration, it is preferable that the drain port of the drain guide is located outside the lowermost corner portion in the extending direction of the drain guide of the solar cell panel.

According to this configuration, the amount of rainwater in a short time is large, and the rainwater that falls on the surface of the solar cell panel goes not only to the lowermost corner portion and its vicinity, but also to a portion away from the lowermost corner portion. Even in such a case, rainwater dripping from a portion distant from the lowermost corner can be received by the drainage guide and guided and discharged by the drainage guide. Since the drain outlet of the drain guide is located on the lateral outside of the solar panel rather than the lowermost corner of the solar panel, rainwater from the solar panel can be drained more accurately to places outside the cultivated surface such as furrows .
Also, in addition to rainwater, droplets may adhere to the solar cell panel due to fog, frost, condensation, fertilization, spraying of pesticides, or watering for irrigation or cooling. These droplets have the same effect as in the case of rainwater.

  Accuracy in areas off the cultivated surface, regardless of the amount of short-term rainfall and the amount of droplets due to fog, frost, condensation, fertilization, pesticide application, or irrigation or cooling. The droplets can be discharged well and the discharged droplets can be prevented from affecting the crop.

  In the above configuration, the drainage guide has a straight line connecting a lowest position at a start point of the waterway and a lowest position at an end point of the waterway, and an edge extending in a direction in which the drainage guide extends from the lowermost corner. Is preferably configured such that the distance between them is wider on the drain port side.

According to this configuration, the cross-sectional area of the channel increases from the starting point of the channel toward the drain.
A larger amount of droplets is dripped at the lowermost corner and its vicinity than at a position farther from the lowermost corner, but the large amount of droplets has a cross-sectional area on the drain port side in the waterway. Since the liquid flows into a wide area, the liquid droplets are accepted so as not to easily overflow into the drain guide. Compared to a drain guide having a wide cross section over the entire length of the water channel, a compact drain structure employing a small drain guide can discharge droplets from the drain port while making it difficult for the droplets to overflow from the middle of the drain guide.

  In the above configuration, it is preferable that the drain guide is configured such that the lower surface is inclined so that the lower surface is located closer to the drain port side.

  According to this configuration, even if droplets of dew condensation water or agricultural chemicals adhere to the lower surface of the drain guide, the attached droplets easily flow toward the drain port along the lower surface. As a result, it is possible to prevent the liquid droplets attached to the lower surface from dropping in the middle of the drain guide.

  In the above configuration, it is preferable that the drain guide is provided with a drain plate extending downward from the drain port.

  According to this configuration, the droplets flowing down from the drain port can be drained by the drain plate so as not to flow around the lower surface of the drain guide. It is possible to avoid that the droplet discharged from the drain guide wraps around the lower surface and falls on the crop or its vicinity.

  A feature of the photovoltaic power generation method of the present disclosure is to use the photovoltaic power generation facility having the above-described configuration.

  According to this feature, it is possible to provide a photovoltaic power generation method capable of generating power while making it difficult for a drop of rainwater or the like attached to the solar cell panel to adversely affect crops.

It is a perspective view showing the whole solar power generation equipment. It is a perspective view which shows the support structure of a solar cell panel. It is a front view which shows the support structure of a solar cell panel. It is a side view which shows the support structure of a solar cell panel. It is a perspective view which shows the whole solar cell panel. It is a perspective view which shows the corner part of a solar cell panel. It is a rear view which shows a solar cell panel. It is a top view which shows the support posture of a solar cell panel. It is a longitudinal section showing a drainage guide. It is a top view showing the solar cell panel provided with another embodiment structure. It is XI-XI sectional view taken on the line of FIG. FIG. 11 is a plan view showing a corner portion having another embodiment. FIG. 11 is a plan view showing a corner portion having another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing the entire photovoltaic power generation facility according to the embodiment of the present invention. The direction of arrow N shown in FIG. 1 indicates the north direction, the direction of arrow S indicates the south direction, the direction of arrow E indicates the east direction, and the direction of arrow W indicates the west direction.

  This photovoltaic power generation facility is used for a photovoltaic power generation method for generating power in a farmland in a state where the cropland can be cultivated.

  As shown in FIG. 1, a solar power generation facility according to an embodiment of the present invention includes a gantry 2 installed on a farmland 1 and a plurality of solar cell panels 3 supported on the gantry 2. The plurality of solar cell panels 3 are arranged in a north-south direction and an east-west direction.

The plurality of solar cell panels 3 are supported so as to be located above the ridges 4 (cultivated surface).
Solar power can be generated by the plurality of solar cell panels 3 while cultivating crops on the farmland 1.

  Specifically, the gantry 2 is provided with a plurality of columns 10 arranged in the north-south direction and the east-west direction. Each of the plurality of columns 10 is erected on the farmland 1 at a position off the ridge 4. The height from the ground to the lower end of each solar cell panel 3 is set to a height at which cultivation work such as tilling can be performed. In the present embodiment, the height from the ground to the lowermost end of each solar cell panel 3 is set to a height at which agricultural machines such as a riding tractor and a riding rice transplanter can be used. Clearances are provided in the ridges 4 between the solar cell panels 3 adjacent in the north-south direction and between the solar cell panels 3 adjacent in the east-west direction.

Each of the plurality of solar cell panels 3 is configured such that the surface shape is a square shape.
Specifically, each of the plurality of solar cell panels 3 includes one panel frame 3a and a plurality of solar cells 3b, as shown in FIGS. The planar shape of the panel frame 3a is formed in a square shape. The plurality of solar cells 3b are supported by the panel frame 3a so as to be aligned in a direction along the lateral edge 3c of the solar cell panel 3 and in a direction along the vertical edge 3d. In the present embodiment, the planar shape of the panel frame 3a is formed in a rectangular quadrangular shape with a horizontal side longer than a vertical side. In the present embodiment, the surface shape of the solar cell panel 3 is formed in a rectangular shape of a horizontally long rectangle. However, the surface shape is not limited to the horizontally long rectangle, and may be a vertically long rectangle or a square unless the effects of the present invention are prevented. , A trapezoid, a parallelogram, a diamond, or the like. Further, the shape is not limited to the square shape, but may be a polygonal shape such as a triangular shape or a pentagonal shape.

  In the present embodiment, the shape of the corner portions A and B is formed in a square shape, but is not limited to the square shape, and may be an arc shape having a rounded surface R (R) as shown in FIG. As shown in FIG. 13, it may be formed in a non-circular shape having a shaved angle surface D. When the corner portions A and B are formed in a non-arc shape, corners C are formed at both ends of the shaved corner surface D. In this case, the distance of the shaving angle plane D, that is, the distance between the two corners C, is set to a distance of 10% or less of the entire outer peripheral length of the solar cell panel 3.

  In the present embodiment, the solar cell panel 3 is configured such that the outer peripheral portion of the solar cell panel 3 projects outside the solar cell 3b, but the outer peripheral edge of the panel frame 3a and the outer peripheral edge of the solar cell 3b. May be arranged so that the panel frame 3a does not protrude outward from the solar battery cells 3b, for example, in such a way that the panel frames 3a are arranged in the front and back directions of the solar battery panel 3.

  Each of the plurality of solar cell panels 3 is included in a portion of the peripheral portions 3 c and 3 d to which the droplets attached to the surface of the solar cell panel 3 can reach by falling, and is vertically above the cultivated surface 4. At each point on the outline of the solar cell panel 3 when the solar cell panel 3 included in the portion is viewed from the back surface, none of the tangent lines L that are in contact with the outline X and included in the plane including the outline X are parallel to the horizontal plane It is supported by the gantry 2 in this state.

  An edge 3c where the droplets of rainwater or pesticides attached to the surface of the solar cell panel 3 fall down the surface is inclined with respect to the horizontal plane, and the corner located at the lower end of the edge 3c. The portion A is located below the other three corner portions B. When the droplets adhere to the surface, the droplets fall down on the surface toward the corner portion A, and the attached droplets are collected at the corner portion A and the vicinity thereof, and are discharged from the corner portion A and the vicinity to the outside of the solar cell panel 3. It is dripped.

  The state where each solar cell panel 3 is supported by the gantry 2 is included in the surface along the surface of the solar cell panel 3 at each point of the edges 3c and 3d that are vertically above the cultivation surface 4. The tangent may be set so as not to be parallel to the horizontal plane.

  The state in which each solar cell panel 3 is supported by the gantry 2 is defined by the points 3c and 3d included in a portion 3c of the edge 3c, where the droplets adhering to the surface of the solar cell panel 3 can reach by falling. The tangent line L included in the plane along the surface of the point may be set in a state not parallel to the horizontal plane.

  Each of the plurality of solar cell panels 3 has a horizontal plane such that the corner portion A of the surface shape is located at the lowermost end, and two edges 3c and 3d extending from the corner portion A are inclined with respect to each other. Is supported by the gantry 2 in a state of being inclined with respect to.

  When droplets of rainwater, pesticides, etc. adhere to the surface of the solar cell panel 3, the droplets fall on the surface toward the lowermost corner portion A, and the attached droplets are collected at the corner portion A and in the vicinity thereof to form a corner. It is dropped from the part A and its vicinity to the outside of the solar cell panel. In this embodiment, the surface of the solar cell panel 3 includes the light receiving surface of the solar cell 3b and the upper surface of the panel frame 3a.

  Each of the plurality of solar cell panels 3 is specifically supported by the gantry 2 based on the following support structure.

  As shown in FIG. 1, the plurality of solar cell panels 3 are configured such that some of the plurality of solar cell panels 3 are arranged in the east-west direction to form one panel group, and the plurality of panel groups are arranged in the north-south direction. I have. The gantry 2 includes a plurality of panel support portions 2A arranged in a north-south direction. Each of the plurality of solar cell panels 3 in the plurality of panel groups is supported by one panel support 2A. Each of the plurality of panel support portions 2A has the same configuration.

  Each of the plurality of panel support portions 2A includes a pair of support frames 11, 12 extending in the horizontal direction, as shown in FIGS. In the present embodiment, the pair of support frames 11 and 12 extend in the east-west direction. The pair of support frames 11 and 12 are supported in a state of being spaced apart in a direction along the vertical direction and spaced apart in a direction along the horizontal direction (south-north direction).

  Specifically, the pair of support frames 11 and 12 are supported by a plurality of beam frames 13. The plurality of beam frames 13 are arranged at intervals in the longitudinal direction of the support frames 11 and 12. Each of the plurality of beam frames 13 extends in the horizontal direction and in the north-south direction. The upper support frame 11 of the pair of support frames 11 and 12 is connected to the upper side of each of the plurality of beam frames 13, and the lower support frame 12 of the pair of support frames 11 and 12 is connected to the plurality of beam frames 13. Are connected to the lower side of each. By utilizing the beam frame 13 as a spacer member, a vertical space is provided between the pair of support frames 11 and 12.

  Whether or not a droplet falls on the surface of the solar cell panel 3 is determined mainly by the inclination of the solar cell panel 3, the surface tension of the droplet, the material of the surface of the solar cell panel, and the size of the droplet. If the inclination of the panel 3 is too large, the speed of the droplets that fall down becomes too large during the fall, and cannot be received by the peripheral portion 3c of the solar cell panel 3 or the drain guide 20 described later, and is included in the farmland or the farmland as it is. The possibility of dripping on cultivated surfaces increases. Also, if the inclination of the solar cell panel 3 is too small, only large droplets will fall down, and when it falls down, it cannot be received by the peripheral portion 3c of the solar cell panel 3 or the drainage guide 20, and the farmland or the farmland The possibility of dripping on the included cultivated surface increases. For this reason, the horizontal and vertical intervals between the support frames 11 and 12 may be appropriately set so as to provide the solar cell panel 3 with an inclination so as to exhibit the effects of the present invention. 3 is set so that the angle between the plane along the surface and the horizontal plane (see FIG. 4) [the angle with respect to the center of the arc obtained by dividing the circumference into 360] is in the range of 5 ° to 30 ° (excluding the boundary value). It is more preferable that the angle is set to be in the range of 18 ° to 22 ° (not including the boundary value).

  Each of the plurality of beam frames 13 in the plurality of panel support portions 2A is configured by a series of frame members. Each beam frame 13 in the plurality of panel supports 2A is a beam frame 13 common to the plurality of panel supports 2A. Each of the plurality of beam frames 13 is supported by the plurality of columns 10. A plurality of reinforcement frames 14 are connected across the plurality of beam frames 13. The plurality of reinforcement frames 14 extend in the east-west direction. The plurality of columns 10 and the reinforcing frames 14 for each of the plurality of beam frames 13 are connected to respective portions of the beam frame 13 that are located across the pair of adjacent panel support portions 2A.

In each of the plurality of solar cell panels 3, as shown in FIGS. 4, 5, and 7, a pair of mounting legs 5 and 6 project from the back side of the solar cell panel 3 toward the pair of support frames 11 and 12. I have. The pair of mounting legs 5 and 6 are arranged at intervals in the width direction of the solar cell panel 3.
The height 5 h at which one of the pair of mounting legs 5, 6 protrudes from the solar cell panel 3 is equal to the height of the other mounting leg 6 of the pair of mounting legs 5, 6. The height is set higher than the height 6 h protruding from the panel 3.

  The height 5h of the mounting leg 5 and the height 6h of the mounting leg 6 are inclined to provide the effect of the present invention to the solar cell panel 3, and the solar cell panel 3 and the support frames 11, 12 interfere with each other. The angle may be appropriately set so as not to be set, but is preferably the angle at the intersection of the plane along the surface of the solar cell panel 3 and the straight lines along the support frames 11 and 12 (see FIG. 7) Is preferably in the range of 0.1 ° to 3 ° (excluding the boundary value), and more preferably in the range of 0.5 ° to 1.5 ° (excluding the boundary value). .

The direction along the lateral edge 3c of the solar cell panel 3 is inclined with respect to the respective shaft cores 11a, 12a of the pair of support frames 11, 12, and the pair of mounting legs 5, 6 are respectively set. It is mounted and connected over a pair of support frames 11 and 12. As shown in FIG. 4, each of the pair of mounting legs 5, 6 is connected to the lower support frame 12 by a clip 30. Each of the pair of mounting legs 5 and 6 is formed in a groove shape opened downward.
The panel side of the clip 30 is engaged with the mounting legs 5 and 6 by being engaged in the grooves of the mounting legs 5 and 6. The frame side of the clip 30 is attached to the lower support frame 12 so as to sandwich it, and is tightened, so that the clip 30 is connected to the lower support frame 12. Each of the pair of mounting legs 5 and 6 and the upper support frame 11 are connected by a U-bolt 31.

As shown in FIG. 4, a pair of support frames 11 and 12 that support the solar cell panel 3 from below are arranged at intervals in the direction along the vertical direction and at intervals in the direction along the horizontal direction. Thus, the solar cell panel 3 is inclined such that one lateral edge 3c is located above the other lateral edge 3c. As shown in FIG. 7, the height 5 h at which one of the pair of mounting legs 5, 6 protrudes from the solar cell panel 3, and the other mounting leg 6 protrudes from the solar cell panel 3. Since the height is higher than the height 6h, the solar cell panel 3 is inclined such that one vertical edge 3d is located above the other vertical edge 3d.
As shown in FIG. 8, the direction along the lateral edge 3 c of the solar cell panel 3 is inclined with respect to the directions of the respective axes 11 a and 12 a of the pair of support frames 11 and 12 extending in the horizontal direction. Then, the solar cell panel 3 is inclined in a swinging state with the lowermost corner portion A as the swing fulcrum in plan view. Due to these three inclinations, the supporting posture of the solar cell panel 3 is such that one corner portion A (the lowermost corner portion) is positioned lower than the other three corner portions B, and furthermore, the lower corner portion A The support posture is inclined such that the longer the laterally extending side edge portion 3c is away from the lowermost corner portion A, the higher the position. Drops of rainwater, pesticides, etc., which fall along the surface of the solar cell panel 3 fall toward and near the lowermost corner A, and the droplets attached to the solar cell panel 3 are moved to the lowermost corner A. And near the corner portion A at the lowermost end and the vicinity thereof, and is dropped to the outside of the solar cell panel 3.

  The inclination of the solar cell panel 3 with respect to the support frames 11 and 12 is appropriately set so that the solar cell panel 3 is provided with an inclination so as to exhibit the effect of the present invention and the solar cell panel 3 does not interfere with the support frames 11 and 12. Preferably, the intersection of a straight line that vertically projects straight lines along the support frames 11 and 12 on a plane along the surface of the solar cell panel 3 and a straight line along the lateral edge 3c of the solar cell panel 3 (See FIG. 8) [the angle with respect to the center of the arc obtained by dividing the circumference into 360 equal parts] is preferably in the range of 0.1 ° to 3 ° (excluding the boundary value), and is preferably in the range of 0.5 ° to 1 °. More preferably, it is in the range of 0.5 ° (excluding the boundary value).

  It is advantageous that the distance between the pair of support frames 11 and 12 in the horizontal direction can be changed without changing the distance in the direction along the vertical direction. That is, by changing the interval in the horizontal direction, the inclination angle of the solar cell panel 3 shown in FIG. 4 can be changed and adjusted.

  In order to support the solar cell panel 3 on the support frames 11 and 12, when viewed in the direction along the vertical edge 3 d, the direction along the horizontal edge 3 c and the axis of the support frames 11 and 12. When the solar cell panel is supported in a state in which the direction along the edge is parallel to the direction along the edge and the direction along the lateral edge 3c is inclined with respect to the direction along the axis of the support frames 11 and 12 in plan view. 3 does not have the slope shown in FIG. 7, but has the slope shown in FIG.

  In each panel group, two solar cell panels 3 are located between adjacent beam frames 13. The posture in which the two solar cell panels 3 are supported by the respective gantry 2 is such that, of the two lower corners A and B, the corner A closer to the beam frame 13 is the other three corners B. It is in a posture lower than the above.

  In each panel group, the interval between adjacent solar cell panels 3 with the beam frame 13 interposed therebetween is smaller than the interval between adjacent solar cell panels 3 without the beam frame 13 interposed therebetween. The solar cell panel 3 is supported at a position near the beam frame 13 in each of the pair of support frames 11 and 12 in a state where the load of the solar cell panel 3 is greater than that at a position away from the beam frame 13.

  As shown in FIGS. 2, 4, 5, and 7, a drain guide 20 is provided for each of the plurality of solar cell panels 3. The drain guide 20 is provided along a lateral edge 3c extending from the lowermost corner portion A. As shown in FIGS. 6 and 7, one end of the drain guide 20 extends to a position located on the lateral outer side of the solar cell panel 3 from the lowermost corner portion A, and a drain port 21 is provided at the extending end. ing. As shown in FIGS. 2 and 4, the drain port 21 is disposed immediately above the reinforcing member 15. The reinforcing member 15 is connected to the column 10 and the beam frame 13. The reinforcing member 15 is connected in an inclined position that is located higher as the beam frame 13 is located.

  Drops such as rainwater dripping from the solar cell panel 3 are received by the drain guide 20, flow to the lateral outside of the solar cell panel 3 along the drain guide 20, discharged from the drain port 21, and fall to the reinforcing member 15. . The droplets that have dropped on the reinforcing member 15 flow down along the reinforcing member 15 and reach the columns 10. The droplets that have reached the column 10 flow down along the column 10 and flow out of the column 10 into the field.

  Since the column 10 stands at a position off the ridge 4 such as a ridge, droplets dropped from the solar cell panel 3 can be discharged to a position off the ridge 4. The reinforcing member 15 and the support 10 can be used as a drain guide to discharge the water.

  As shown in FIGS. 4, 5, 6, and 7, a drain plate 22 extends downward from the drain port 21. Drainage can be performed by the draining plate 22 so that the droplets coming out of the drainage port 21 do not flow around the lower surface 20a of the drainage guide 20. The drainage guide 20 includes a flat plate portion forming a bottom portion, and a vertical plate portion rising from an end of the flat plate portion opposite to a side connected to the solar cell panel 3.

  As shown in FIG. 9, the drain guide 20 is configured so that the lower surface 20 a is inclined such that the lower surface 20 a is located lower toward the drain port. Specifically, the drain guide 20 has a lower surface 20a, and a line formed by the lowest point in a cross section taken along a plane perpendicular to the flowing water direction. It is configured to be in a state. Even if droplets such as dew condensation water and agricultural chemicals adhere to the lower surface 20a, the attached droplets easily flow toward the drain port 21 along the lower surface 20a.

[Another embodiment]
(1) FIG. 10 is a plan view showing a solar cell panel 3 provided with another drainage structure. FIG. 11 is a sectional view taken along arrow XI-XI in FIG. 10. In the solar cell panel 3 provided with another drainage structure, the drainage guide 20 is configured such that the cross-sectional area of the waterway 20b increases from the starting point of the waterway 20b toward the water outlet 21.

  Specifically, the drain guide 20 includes a straight line Z connecting the lowest position P1 at the start point of the waterway 20b and the lowest position P2 at the end point of the waterway 20b, and a lateral edge 3c extending from the lowermost corner portion A. Is configured such that the distance from the drain port 21 becomes wider toward the drain port 21 side.

  A larger amount of droplets are dripped at the lowermost corner portion A and in the vicinity thereof than at a portion away from the lowermost corner portion A, and the large amount of droplets is formed on the drain port side in the water channel 20b. Since the liquid flows into a portion having a large cross-sectional area, the liquid droplets are received so as not to easily overflow into the drain guide 20.

(2) In the above-described embodiment, the example in which the direction of the solar cell panel 3 is set to the south is shown. However, depending on the lighting conditions of the farmland 1, the direction other than the south is set, such as a direction slightly deviated from the south. You may.

(3) In the above-described embodiment, the example has been described in which the vertical interval between the pair of support frames 11 and 12 is set by the beam frame 13, but both the pair of support frames 11 and 12 are connected to the beam frame 13. And a spacer member is interposed between the support frames 11, 12 and the beam frame 13, and a distance between the pair of support frames 11, 12 in the vertical direction is set by the spacer member. A configuration may be adopted and implemented.

(4) In the above-described embodiment, one corner portion A is positioned lower than three corner portions B because the heights of the pair of mounting legs 5 and 6 projecting from the solar cell panel 3 are different. Although an example in which the mounting posture of the solar cell panel 3 is made to appear is shown, instead of this configuration, the projecting heights of the pair of mounting legs 5, 6 are set to be the same, and the mounting legs 5, 6 A height adjusting member is interposed between the supporting frames 11 and 12, and a configuration is adopted in which the mounting position in which one corner portion A is positioned lower than the three corner portions B is revealed by the height adjusting member. Is also good.

  The present invention is not limited to the photovoltaic power generation facilities that support the solar cell panel at a height above the ground where a riding type agricultural machine can be used below the solar cell panel 3, but the height of the solar cell panel 3 above the ground is lower than this. Riding-type agricultural machines cannot be used, but walking-type agricultural machines can be used, and the solar cell panel 3 can be used for solar power generation facilities with different ground heights.

DESCRIPTION OF SYMBOLS 1 Farmland 2 Stand 3 Solar panel 3c Edge 3d Edge 4 Cultivated surface (ridge)
Reference Signs List 5 Mounting leg 5h Height 6 Mounting leg 6h Height 10 Support 11 Support frame 11a Shaft core 12 Support frame 12a Shaft core 13 Beam frame 15 Reinforcement member 20 Drain guide 20a Lower surface 20b Water channel 21 Drain port 22 Drain plate A corner portion B corner L tangent P1 low position P2 low position X contour

Claims (12)

Solar power generation equipment installed on farmland,
Solar panels,
And a gantry supporting the solar cell panel,
The solar cell panel has a horizontal surface such that one of the corners of the surface shape is located at the lowermost end , and two edges extending from the lowermost corner are inclined with respect to each other. Supported by the gantry in a state inclined with respect to,
A drain guide along an edge extending from the lowermost corner portion of the solar cell panel to the uppermost corner portion of the lowermost end is provided on the solar cell panel,
The gantry is a pair of support frames that support the solar cell panel, a beam frame that supports the pair of support frames, a column that extends vertically from the farmland and supports the beam frame, the column, and the column. A reinforcing member connected to the beam frame,
The solar cell panel and the beam frame are disposed adjacent to each other, and the drain port of the drain guide is located immediately above the reinforcing member, so that the droplet discharged from the drain port is the reinforcing member and A photovoltaic power generation facility having a configuration of flowing down to the farmland along the support.   The photovoltaic power generation facility according to claim 1, wherein the surface shape is a square shape. The gantry includes a pair of support frames extending in a horizontal direction,
The said solar cell panel is supported by a pair of said support frames in the state which the edge part of the extending direction of the said drainage guide inclines with respect to the direction along each axis of a pair of said support frames. The photovoltaic power generation facility described in 1. The gantry is provided with a pair of horizontally extending support frames spaced apart in a direction along the vertical direction, and arranged in a line spaced apart in a direction along the horizontal direction,
The photovoltaic power generation facility according to any one of claims 1 to 3, wherein the solar cell panel is received and supported from below by a pair of the support frames. The gantry includes a beam frame that supports the pair of support frames,
One support frame of the pair of support frames is connected to the upper side of the beam frame,
The photovoltaic power generation facility according to claim 3, wherein the other of the pair of support frames is connected to a lower side of the beam frame. A pair of mounting legs connected across the pair of support frames are provided to project from the solar cell panel toward the pair of support frames in a state of being aligned in a width direction of the solar cell panel,
The height at which one mounting leg of the pair of mounting legs protrudes from the solar cell panel is higher than the height at which the other mounting leg protrudes from the solar cell panel. Photovoltaic power generation equipment according to the item.   In the state where the peripheral edge of the drain guide of the solar cell panel in the extending direction is inclined with respect to the direction along each axis of the pair of support frames, and among the four corners of the solar cell panel The photovoltaic power generation facility according to claim 6, wherein the pair of mounting legs are connected to the pair of support frames in a state where one corner portion is located lower than the other three corner portions.   The photovoltaic power generation according to any one of claims 1 to 7, wherein the drainage port of the drainage guide is located outside the lowermost corner portion in the extending direction of the drainage guide of the solar cell panel. Facility.   The drainage guide has an interval between a straight line connecting the lowest position at the start point of the waterway and the lowest position at the end point of the waterway, and an edge extending from the lowermost corner in the extending direction of the drainage guide. The photovoltaic power generation facility according to claim 8, wherein the photovoltaic power generation facility is configured to be wider on the drain port side.   The photovoltaic power generation facility according to claim 8, wherein the drain guide is configured so that a lower surface thereof is inclined downward as it approaches the drain port.   The photovoltaic power generation facility according to any one of claims 8 to 10, wherein a drain plate extending downward from the drain port is provided in the drain guide.   A photovoltaic power generation method for generating power using the photovoltaic power generation equipment according to claim 1.

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