JP2017079549A - Installation structure of photovoltaic module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for installing a photovoltaic power generation module in which safety and strength against wind are sufficiently enhanced. SOLUTION: A plurality of solar power generation modules 6 are arranged on a cable 3 in a row, and a center of gravity position G including the solar power generation modules 6 is lower than a fulcrum position R. A weight 9 is suspended. Further, a sliding portion 21 having a concave sliding surface 22 is vertically provided on the lower surface of the solar power generation module 6, and the cable 3 comes into contact with the sliding surface 22 so that the position is a fulcrum position R. As a result, the solar power generation module 6 is supported by the cable in a state of being rotatable around the material axis of the cable 3, and with respect to the horizontal wind load component along the direction orthogonal to the material axis of the cable 3, As the cable 3 relatively slides on the sliding surface 22 along the direction, the solar power generation module 6 moves along the direction and the fulcrum position R shifts to the windward side. There is. [Selection diagram] Figure 2

Description

  The present invention relates to a solar power generation module installation structure that is applied when a solar power generation module is installed on a tension member stretched between two different points.

  Biomass, wind power generation, geothermal power generation, fuel cells, solar power generation, etc. have been developed as alternative energy alternatives to fossil fuels and nuclear power, but solar power generation has been developed for thermal power generation and nuclear power generation from the viewpoint of low energy density. Although it does not reach, there are few restrictions on the installation location, and there is an advantage that it can be easily installed in a place where electric power is required.

  Photovoltaic power generation equipment is composed of devices such as a solar power generation module that converts sunlight into electric power and a power conditioner that converts direct current power from the solar power generation module into alternating current, but recently, it has been replaced with a power conditioner. The number of cases where an AC conversion device called a micro inverter is attached to each photovoltaic power generation module is increasing, and further expansion of the installation location and accompanying promotion are expected.

  Here, the solar power generation module is installed on the rooftop or ground surface of the building via a gantry, but when designing the gantry, take into account the wind load and other factors, including the weight of the solar power generation module. The material, cross-sectional dimensions, etc. are determined.

  On the other hand, a proposal has been made to attach a solar power generation module to a cable spanned between columns instead of the ground or the roof of a building and suspend it on the cable (Patent Document 1).

Japanese Patent Laying-Open No. 2015-37163

  When the solar power generation module is installed in the form of being suspended on the cable as described above, it is not necessary to secure the ground or the rooftop of the building as an installation surface as in the past, but it is advantageous in terms of space utilization, Measures must be taken to prevent the occurrence of damage to the photovoltaic module or breakage of the cable due to wind loads.

  However, in the past, it has not been said that sufficient wind countermeasures have been taken, and the occurrence of a situation such as damage to the photovoltaic module due to wind, or breakage of the cable or wire holding the photovoltaic module. There was concern.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a solar power generation module installation structure that can sufficiently enhance safety and strength against wind.

In order to achieve the above object, the solar power generation module installation structure according to the present invention is a solar power generation module formed in the shape of a rectangular plate, stretched between two different points as described in claim 1. In the installation structure of the solar power generation module arranged on the tensile material so that the material axis of the tensile material and the plate surface are substantially parallel,
The photovoltaic power generation module is configured to be supported by the tensile material with the vicinity of the lower surface as a fulcrum position, and the photovoltaic power generation so that the position of the center of gravity including the photovoltaic power generation module is lower than the fulcrum position. Suspend the weight from the module,
Of the wind acting on the photovoltaic power generation module so as to be rotatable about the material axis of the tensile material, the horizontal wind load along the direction perpendicular to the material axis of the tensile material It moves along the direction perpendicular to the axis of the tensile material relative to the component, and is attached to the tensile material so that the fulcrum position shifts to the windward side of the wind load component.

  Moreover, the installation structure of the photovoltaic power generation module according to the present invention is such that the sliding portion formed with a sliding surface on which the tensile material abuts slidably along the direction perpendicular to the material axis is provided on the photovoltaic power generation module. The position where the sliding surface is in contact with the tension member is set as the fulcrum position, and the distance from the sliding surface to the center of gravity is maximized near the center of the sliding surface. Thus, it forms in the concave shape which faced the downward in the cross section orthogonal to the material axis of the said tension | pulling material.

  In the installation structure of the photovoltaic power generation module according to the present invention, when the photovoltaic power generation module formed in a rectangular plate shape is disposed on the tensile material, the photovoltaic power generation module is supported by the tensile material with the vicinity of the lower surface as a fulcrum position. The weight is suspended from the solar power generation module so that the position of the center of gravity including the solar power generation module is lower than the above-described fulcrum position. Of the wind acting on the photovoltaic power generation module so as to be rotatable around the axis, the horizontal wind load component along the direction perpendicular to the material axis of the tensile material is perpendicular to the material axis of the tensile material. It is attached to this tension material so that it moves along and the above-mentioned fulcrum position shifts to the windward side.

  In this way, when there is no wind, the photovoltaic module is balanced at a predetermined angular position with respect to the axis of the tensile material by the action of the weight suspended from the photovoltaic module. Hold posture.

  On the other hand, when a constant wind blows and a horizontal wind load component along the direction perpendicular to the axis of the tensile material acts on the photovoltaic module, the photovoltaic module moves along the direction perpendicular to the axis of the tensile material. The fulcrum position shifts to the windward side of the wind load component described above, and accordingly, the area where the wind load acts on the plate surface of the photovoltaic power generation module is larger on the leeward side from the fulcrum position than on the windward side. Also grows.

  Therefore, the solar power generation module rotates around the fulcrum position so that the plate surface is close to parallel to the wind direction.

  Therefore, the wind load acting on the photovoltaic power generation module is reduced, and the tensile force generated in the tensile material is also reduced accordingly, thus the design conditions of the photovoltaic power generation module and the tensile material against the wind load are eased, and the photovoltaic power generation module The installation cost can be greatly reduced.

  The solar power generation module is also called a solar cell panel or a solar cell module, and a commercially available one can be used as appropriate, and a rectangular plate is a typical example.

  The tensile material includes a member called a cable, a wire, or the like. Moreover, a tension | tensile_strength material can be comprised with arbitrary materials, for example, can be comprised with a wire from PC steel wire or PC steel. The tensioning direction of the tensile material does not necessarily have to be horizontal, and may be a state in which a deflection is formed between two points.

  The tensile material can be protected from abrasion by sliding operation by inserting the tensile material into the sleeve at the fulcrum position, but the sleeve in that case is also an accessory of the tensile material. Included in the concept.

  How to form the two points where the tensile material is stretched is arbitrary, for example, it can be set as the apexes of two tower-like structures that are spaced apart from each other, and sandwiches a river or valley 2 It can also be the summit or hillside of two mountains.

  As long as the weight functions as a gravity balancer and is installed in the photovoltaic module so that the position of the center of gravity including the photovoltaic module is lower than the fulcrum position of the photovoltaic module by the tensile material, Although the specific configuration is arbitrary, it is desirable to have a configuration that is not affected by the wind as much as possible and has high posture stability. For example, it is formed of a metal material having a high mass density, and a photovoltaic power generation module through a truss material It is possible to employ a configuration that is suspended below the sway.

  When attaching the photovoltaic power generation module to the tensile material, move the photovoltaic power generation module along the direction perpendicular to the material axis to move the fulcrum position upwind against the horizontal wind load component along the direction perpendicular to the material axis of the tensile material. The specific structure to be shifted to is arbitrary, for example, in the periphery of the photovoltaic power generation module, each of the brackets in which long grooves are formed on the lower surface of the two edge portions orthogonal to the material axis of the tensile material, respectively, If the photovoltaic power generation module is attached to the tensile material so that the tensile material is inserted into each of the long grooves, the photovoltaic power generation module is moved in a direction orthogonal to the material axis of the tensile material up to the length of the long groove. be able to.

  Here, a sliding portion formed with a sliding surface on which the tensile material slidably contacts along the direction perpendicular to the material axis is installed on the lower surface of the photovoltaic power generation module, and the sliding surface and the tensile material are The abutting position is the fulcrum position described above, and the sliding surface is positioned below the cross section perpendicular to the material axis of the tensile material so that the distance to the center of gravity is maximized near the center of the sliding surface. If the configuration is formed in a concave shape facing, the fulcrum position of the photovoltaic power generation module that is biased to one side due to the wind load will return to the vicinity of the center of the sliding surface after the wind stops, and no wind The attitude of the photovoltaic module at that time is always constant.

The whole side view which showed the installation structure 1 of the photovoltaic power generation module which concerns on this embodiment. It is the figure which showed the installation structure 1 of the solar power generation module, (a) is a perspective view, (b) is the side view seen from the material-axis direction of the cable 3. FIG. Explanatory drawing which showed the effect | action of the installation structure 1 of the solar power generation module which concerns on this embodiment. The side view which looked at the installation structure of the photovoltaic power generation module which concerns on a modification from the material-axis direction of the cable 3. FIG. The side view which looked at the installation structure of the photovoltaic power generation module which concerns on another modification from the material-axis direction of the cable 3. FIG. The side view which looked at the installation structure of the photovoltaic power generation module which concerns on another modification from the material-axis direction of the cable 3. FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a solar power generation module installation structure according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an overall side view showing an installation structure 1 for a photovoltaic power generation module according to this embodiment. As can be seen from the figure, the installation structure 1 of the photovoltaic power generation module has a cable 3 as a tensile material stretched between the tops of the tower-like structures 2 and 2 erected between two different points. Is fixed to the ground 5 via the anchors 4 and 4, and the photovoltaic module 6 is attached to the cable 3 so as to form a line along the cable 3 and so that the material axis of the cable 3 and the plate surface are substantially parallel to each other. Are arranged.

  The photovoltaic power generation module 6 stands on the tower-like structures 2 and 2 with, for example, rivers and valleys sandwiched between them, and the cables 3 are stretched across the rivers and valleys so that the upper spaces of the rivers and valleys It can be used effectively as an installation space.

  What is necessary is just to use suitably what is marketed by names, such as a solar power generation module, a solar cell panel, a solar cell module, as a solar power generation module.

  Although the cable 3 depends on the total weight including the plurality of solar power generation modules 6, it is possible to ensure a necessary tensile strength with a margin by configuring the cable 3 with a PC steel wire, for example.

  As shown in FIG. 2, the photovoltaic power generation module 6 has a rectangular plate shape as a whole, and its lower surface vicinity is supported by the cable 3 as a fulcrum position R, and includes the photovoltaic power generation module. A weight 9 is suspended below the center of gravity position G (indicated by a black circle in the figure) via a truss member 8 so as to be lower than the fulcrum position R. The photovoltaic power generation module 6 can be balanced at the angular position and the posture can be maintained.

  It is desirable that the weight 9 is not affected by the wind as much as possible and has a high posture stability. For example, the weight 9 may be made of a metal material having a high mass density.

  On the lower surface of the photovoltaic power generation module 6, a sliding portion 21 is formed that has a concave sliding surface 22 formed in a cross section perpendicular to the material axis of the cable 3 and facing downward. When the cable 3 comes into contact with the cable 22 and the position thereof becomes the fulcrum position R, the photovoltaic power generation module 3 is supported by the cable in a state of being rotatable around the material axis of the cable 3. Of the wind acting on the photovoltaic power generation module 6, the cable 3 is relatively on the sliding surface 22 along the material axis orthogonal direction with respect to the horizontal wind load component along the material axis orthogonal direction of the cable 3. The photovoltaic power generation module 6 moves along the direction perpendicular to the material axis of the cable 3 and the fulcrum position R shifts to the windward side.

  The sliding surface 22 is formed so that the distance from each point on the sliding surface to the center of gravity G is maximized near the center, and is biased to either side by the wind load described above. The horizontal position of the photovoltaic power generation module 6 can be returned to the vicinity of the center of the sliding surface 22 after the wind stops.

  In the solar power generation module installation structure 1 according to the present embodiment, when the solar power generation module 6 is arranged on the cable 3, the solar power generation module is supported by the cable 3 with the vicinity of the lower surface thereof as a fulcrum position R. And a weight from the photovoltaic module so that the gravity center position G including the photovoltaic module 6 is lower than the fulcrum position R. 9 is suspended, and the wind acting on the photovoltaic power generation module 6 with respect to the horizontal wind load component along the direction perpendicular to the material axis of the cable 3 is along the direction perpendicular to the material axis of the cable. The photovoltaic power generation module 6 moves and the fulcrum position R is shifted to the windward side.

  In this way, when there is no wind, the solar power generation module 6 is balanced at a predetermined angular position around the material axis of the cable 3 by the action of the weight 9 suspended from the solar power generation module 6. In this state, the posture is maintained (see FIG. 2).

  On the other hand, when a constant wind blows and a horizontal wind load component along the direction perpendicular to the material axis of the cable 3 acts on the photovoltaic power generation module 6, the photovoltaic power generation module is connected to the cable as shown in FIG. 3, the fulcrum position R shifts to the windward side and to the left side in the figure.

Accordingly, the distance from the fulcrum position R to the edge in the photovoltaic power generation module 6 is L ₁ (<L; initial distance) on the leeward side and L ₂ on the leeward side, as shown in FIG. (> L), and the area on which the wind load acts is larger on the leeward side.

  Therefore, as shown in the figure, the photovoltaic power generation module 6 rotates around the fulcrum position R so that its plate surface is close to parallel to the wind direction.

  As described above, according to the solar power generation module installation structure 1 according to this embodiment, the fulcrum position R of the solar power generation module 6 by the cable 3 is shifted by the action of the horizontal wind load component. At the same time, the areas on both sides of the fulcrum position R are increased on the leeward side, so that the photovoltaic power generation module 6 rotates and assumes a posture close to the wind direction.

  Therefore, the wind load acting on the solar power generation module 6 is reduced, and the tensile force generated in the cable 3 is also reduced accordingly, thus the design conditions of the solar power generation module 6 and the cable 3 with respect to the wind load are eased, and The installation cost of the power generation module 6 can be greatly reduced.

  Further, since the tensile force generated in the cable 3 is reduced, the distance between the two points where the cable is stretched can be increased, and the installation of the solar power generation module 6 across the river and valley is easier to realize. Become.

  Although not specifically mentioned in the present embodiment, the attitude of the photovoltaic power generation module 6 when there is no wind is adjusted to an arbitrary angle (elevation angle) by adjusting the length of the truss member 8 as shown in FIG. It is possible to improve the power generation efficiency in consideration of the solar altitude.

  In the present embodiment, the cable 3 is directly brought into contact with the sliding surface 22 of the sliding portion 21, but instead, the cable 3 is inserted into the sleeve 31 as shown in FIG. The sleeve may be fixed to the cable 3 and the sleeve 3 may be brought into contact with the sliding surface 22 of the sliding portion 21.

  According to such a configuration, it is possible to protect the peripheral surface of the cable 3 from abrasion due to a sliding operation.

  In order to prevent the photovoltaic power generation module 6 from falling off the cable 3, as shown in the figure, a drop prevention plate 32 is provided on the sliding portion 21 so that the lower portion of the sliding surface 22 is a closed space. If the drop prevention plate 32 is made detachable during the attachment, the photovoltaic power generation module 6 can be easily detached from the cable 3 and the maintenance inspection of the photovoltaic power generation module can be facilitated.

  Moreover, in this embodiment, the sliding part 21 is suspended from the lower surface of the photovoltaic power generation module 6, and the cable 3 is relative to the sliding surface 22 formed on the sliding part along the direction perpendicular to the material axis. The photovoltaic power generation module 6 is moved along the material axis orthogonal direction of the cable 3 and the fulcrum position R is shifted to the windward side. A specific configuration for moving the photovoltaic power generation module along the orthogonal direction of the material axis and shifting the fulcrum position to the windward side with respect to the horizontal wind load component along is arbitrary, and instead of the configuration of this embodiment As shown in FIG. 6, brackets 42 each having a long groove 41 formed on the lower surfaces of the two edge portions orthogonal to the material axis of the cable 3 in the periphery of the photovoltaic power generation module 6 are respectively suspended (see FIG. 6). In this case, only the front side is indicated.) The photovoltaic module 6 may be attached to the cable 3 so 3 is inserted.

  In such a configuration, since the position of the solar power generation module 6 when the wind stops is biased to one of the sides, the attitude of the solar power generation module 6 in the no-wind state cannot be made constant, and the solar altitude However, there is a limit to improving the power generation efficiency in consideration of the above. However, by moving the photovoltaic power generation module 6 in the direction orthogonal to the material axis of the cable 3 with the length of the long groove 41 as the limit, The point that the fulcrum position R of the photovoltaic power generation module 6 by the cable 3 can be shifted when the load component is applied is not different from the above-described embodiment.

1 Solar power module installation structure 3 Cable (tensile material)
6 Solar power generation module 9 Weight 21 Sliding part 22 Sliding surface

Claims (2)

Installation structure of a photovoltaic power generation module in which a photovoltaic power generation module formed in a rectangular plate shape is arranged on the tensile material so that the axis of the tensile material stretched between two different points and the plate surface are substantially parallel to each other In
The photovoltaic power generation module is configured to be supported by the tensile material with the vicinity of the lower surface as a fulcrum position, and the photovoltaic power generation so that the position of the center of gravity including the photovoltaic power generation module is lower than the fulcrum position. Suspend the weight from the module,
Of the wind acting on the photovoltaic power generation module so as to be rotatable about the material axis of the tensile material, the horizontal wind load along the direction perpendicular to the material axis of the tensile material Installation of a photovoltaic power generation module, wherein the solar power generation module is attached to the tension member so that the fulcrum position shifts to the windward side of the wind load component by moving along the direction perpendicular to the axis of the tension member with respect to the component Construction. A sliding portion formed with a sliding surface on which the tensile material abuts slidably along the direction perpendicular to the material axis is installed on the lower surface of the photovoltaic power generation module, and the sliding surface and the tensile material are The abutting position is the fulcrum position, and the sliding surface is downward in a cross section orthogonal to the material axis of the tensile material so that the distance to the center of gravity is maximized near the center of the sliding surface. The installation structure of the solar power generation module according to claim 1, which is formed in a concave shape facing the surface.

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