KR101970640B1 - Floating solar power generating plant - Google Patents

Abstract

The present invention relates to a water photovoltaic system using underwater buoyancy and, more specifically, to a water photovoltaic system for configuring a unit power generation body by providing weights and buoy at the bottom of one column body and mounting solar panels on the top by brackets such that solar power is generated in the lake and sea, wherein the weights and the buoy of the unit power generation body are located in the water so as to prevent the pressure of a water surface wave which generates the greatest force when the wave is generated by wind from being transmitted to a structure to be damaged. In addition, since each of the unit power generation bodies is influenced by the waves to a minimum, when the plurality of unit power generation bodies are connected to form a cluster generator, the gap between the unit power generation bodies can be maintained by connecting the unit power generation bodies by the ropes and pulling the same outwards, thereby reducing installation costs and facility maintenance costs.

Description

{FLOATING SOLAR POWER GENERATING PLANT}

More particularly, the present invention relates to a water solar power generation apparatus using underwater buoyancy, more specifically, a weight weight and buoyancy agent are installed at the bottom of one column body, a solar panel is placed at the upper end thereof, And the sea, etc., and the weight of the unit foot and the buoyancy agent are located in the water, so that the pressure of the water surface wave which generates the greatest force when the wave is generated by the wind is transmitted to the structure and is broken . In addition, since each of the unit generators is influenced by waves to a minimum, when a plurality of unit generators are connected to form a cluster generators, the gap between the unit generators can be pulled toward and away from the ropes Thereby reducing the installation cost and maintenance cost of the photovoltaic power generation apparatus.

In general, solar cells convert the sun's light energy into electrical energy. The minimum unit for generating electricity using the photoelectric effect is called a cell, and a plurality of cells are connected in series or in parallel to generate electric power.

A photovoltaic device is a collection of structures mounted in series or in parallel with a plurality of solar modules.

Such photovoltaic power generation devices are generally installed on the land, which requires a great deal of site purchase cost and civil engineering cost, and the environment is destroyed because it is used as a site by mainly cutting down the mountains. In addition, when installed on the land, the solar modules are heated by the geothermal heat in the summer, thereby failing to effectively cool the solar modules. As a result, the power generation efficiency of the solar module is lowered.

In order to solve such a problem, a method of installing on the surface of water such as a lake, a river, a pond, a dam, and the sea has been developed. Such a water photovoltaic power generation system is a power generation system using a plurality of floating solar photovoltaic floating structures in which a plurality of solar modules installed on a water surface together with a buoy are arranged. These floating photovoltaic power generation floating structures are installed in a state floating on the water surface, so that external forces such as water flow and wind greatly act on the structures floating on the water surface. Particularly, in the case of waves, since the greatest force acts on the water surface, the stronger the external force acts on the structure, the larger the surface that the structure contacts with the water surface. Repeated application of an external force to the structure accumulates the fatigue of the structure, so that a portion having a weak structural strength is easily broken, thereby reducing the life of the structure. This is a disadvantage in that the maintenance cost of the facility is increased because the parts must be replaced or repaired for continuous use, and the installation cost is increased if the structural strength of the structure is increased during installation.

Korean Patent Laid-Open No. 1-2018-0025370 (published on Aug. 31, 2013; hereinafter referred to as "Prior Art 1") has proposed an environmentally friendly solar photovoltaic power generation structure. The prior art document 1 discloses a structure in which a plurality of sub-assemblies are connected by brackets, an upper end of the brackets is provided with a connecting rod to connect the sub-assemblies in the longitudinal direction, and a solar module is installed on the anchor structure . However, in the preceding document 1, in order to prevent damage due to waves, a plurality of buckets are fixed by a bracket and a connecting rod to increase the structural strength, which increases the installation cost.

Korean Registered Utility Model No. 20-0464027 (Registered on November 30, 2012, hereinafter referred to as 'Prior Art Document 2') has proposed a floating suspended structure for a photovoltaic power generation device. In the prior art document 2, a plurality of floating supports of a rectangular parallelepiped, a frame inserted in the axial direction of the floating support, and a connection portion coupled between adjacent floating supports joined to the frame end side protruding from the outer surface of the floating support Contains configuration. The prior art 2 also has a drawback in that the installation cost is increased because a plurality of frames are reinforced to increase the structural strength of the floating support.

Therefore, it is necessary to study a new structure that can reduce the installation cost while minimizing the wave damage.

Korean Laid-Open Patent No. 1-2018-0025370 (Published on Aug. 29, 2013): Eco-Friendly Solar Photovoltaic Structure Korean Registered Utility Model No. 20-0464027 (Registered on November 30, 2012): Water floating structure for photovoltaic power generation system

In order to solve the problems of the prior art as described above,

And to provide a device capable of reducing the installation cost by prolonging the service life by providing a structure in which the pressure due to waves is minimized.

An aqueous photovoltaic device according to the present invention for solving the above-

A photovoltaic power generation apparatus comprising: a vertically standing column body; A solar panel mounted on an upper end of the column tube as a bracket; A weight weight that is a cylindrical weight coupled coaxially to a lower end of the column tube; And a buoyancy buoyancy member which is fixed in the upper portion of the weight to be coaxial with the column body and is disposed in the water to provide buoyancy.

A plurality of unit generators may be arranged in a grid pattern by means of spacing means to constitute a cluster power generator for power generation.

The column body is constructed such that the upper end thereof is closed and the lower end thereof is opened, and an inlet / outlet hole is formed in the upper side, and a compressor is installed in the inlet / outlet hole. The volume of the air layer is adjusted by a compressor, Can be adjusted in detail.

The gap maintaining means may include a gap maintaining rope connected between the unit generators disposed close to the front, the rear, or the right and left, and a mooring rope pulling the unit generators positioned at the outermost corner of the cluster generator to the outer side. have.

Further, the column body forms upper and lower loops in the front, rear, left and right directions on the upper side of the underwater buoyant body coupled with the lower end, respectively; The spacing-maintaining rope may comprise a horizontally-connected rope horizontally connecting an upper ring or a lower ring between adjacent unit generators, and a diagonal line connecting the upper ring and the lower ring between adjacent unit generators.

The mooring rope may be fixedly installed on the floor of the installation site so that tension is pulled to the outside of the mooring rope at one end thereof connected to the column pipe body at the edge of the outermost unit .

In addition, the column body of the unit generators may include a supporting member that is coupled to the upper rotating tubular body and the lower fixed tubular body by bearing, the upper rotating tubular body may include a support member protruding in the forward and backward directions and a plurality of unit feet And a connecting member which integrally connects the supporting members of the whole to each other by a string or a tube or a rod; A gear portion is formed along the outer surface at the lower end side of the upper rotating tubular body and a rotary motor having a driving gear meshing with the gear portion is fixed to the lower fixed tubular body in any of the unit generators connected to the connecting member And the upper rotating tubular body of the other unit generators of the adjacent line connected by the connecting member may be rotated together with the upper rotating tubular body by driving the rotating motor.

In addition, the weights and the underwater buoyant body may be formed into a plurality of through holes so that the fish can be utilized as a resting fish.

In the aquaporative power generation apparatus of the present invention by the above-mentioned solution means,

In the case of wind-induced waves, only the vertical column body is located at the water surface where the greatest force acts, and the bulky buoyant, weight and solar electricity are placed in the water or above the water surface, . This can provide an effect of minimizing fatigue failure caused by repeated pressure transfer and thus prolonging service life.

In addition, when a plurality of unit generators are arranged, since the wave transmitted to the unit generators is weak, the spacing between unit generators can be maintained as a rope, thereby reducing the installation cost.

It is also possible to adjust the height to a predetermined range according to the amount of air inside the column tube by mounting a compact compressor on the column tube of the unit generator, thereby increasing the incidence rate of sunlight by arranging the unit compressor to a desired height have.

In addition, buoyancy is provided even if the water level fluctuates by attaching an auxiliary buoyant to the mooring rope, so that a constant tension can be provided without deflection of the mooring rope.

In addition, by rotating the upper rotating tubular body of the column body by turning the rotary motor mounted on one of the unit generators in the same line, the unit generators of the adjacent lines connected by the connecting member are also rotated together, It is possible to rotate all the multiple unit generators of the same line connected to the connecting member by the motor drive, thereby reducing the cost of the apparatus. In addition, since the solar panel can be rotated according to the position of the sun, it is possible to provide a useful device capable of increasing the amount of incidence and further improving the amount of generated electricity.

FIG. 1A and FIG. 1B are a perspective view and an exploded perspective view showing a unit generators according to the present invention. FIG.
1C is a vertical cross-sectional view of a column body according to the present invention.
1D is a schematic view showing an installation state of the unit generators according to the present invention.
BACKGROUND OF THE INVENTION Field of the Invention [0001]
Figs. 3A and 3B are schematic views showing a space maintaining means according to the present invention; Fig.
FIG. 4 is an installation view of a cluster foot mounted with a mooring rope equipped with an auxiliary buoyant body according to the present invention. FIG.
FIGS. 5A and 5B are a schematic plan view and a plan view showing an operation state of the column body according to the present invention;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are shown enlarged or reduced from the actual size for the sake of clarity of the present invention.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises", "having", or "having" are used to specify that there is a feature, a number, a step, an operation, an element or a combination thereof disclosed in the specification, It should be understood that the foregoing does not preclude the presence or addition of other features, numbers, steps, operations, elements, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as commonly used and predefined terms should be construed to have meanings consistent with their contextual meanings in the relevant art and are not to be construed as ideal or overly formal in meaning unless expressly defined in the present application .

1A to 1D, an aquarium photovoltaic power generation apparatus 10 according to the present invention includes a column body 21, a solar panel 22 provided on the column body, a weight 23, And a single body 20 constituted by a body 24. The single generator 20 is a photovoltaic generator capable of generating solar power independently of itself.

The column body 21 constituting the single foot body is a tubular body installed perpendicularly to the water surface. The column body 21 has a lower end opened and an upper end closed. An inlet / outlet hole 211 is formed in an upper side of the column body 21, and a compressor 212 is installed in the inlet / . At this time, the air injection is performed by a compressor, and the air discharge can be performed by a separately installed motorized valve. Here, the compressor and the motor-operated valve may be supplied with electricity through a separate auxiliary battery that is charged by the solar panel. Since the buoyancy of the starter tube itself can be finely adjusted by adjusting the amount of air inside the column tube body 21, it can be finely adjusted to a desired height after the installation, so that a plurality of single feet are arranged, The solar panel can be irradiated with solar light as much as possible.

The solar panel 22 receives solar light and converts it into electricity, and a generally used module form is used. The solar panel 22 and the column body 21 are coupled through a bracket rotatably. The angle of the bracket may be adjusted to adjust the incident angle of the solar panel according to the angle of the sun. Various means known in the art can be applied to the angle adjusting means, and a bracket may be provided with a secondary battery so that a small amount of electricity used in the photovoltaic power generation apparatus can be provided by itself. For example, a lamp may be mounted on any one part of a single foot, and electricity may be supplied from the auxiliary battery at night, thereby causing the fishing boat moving to the waterfront to be avoided.

The weight 23 is coupled to the lower end of the column body 21 in a coaxial manner. The weights may be formed in a cylindrical shape so that the same water pressure is applied to the side direction so that the center of gravity can easily be formed. However, it is also within the scope of the right to form the weights in various forms such as a hexahedron. In addition, the weight can be formed of various materials, and it can be formed into various shapes by using a cement material. For example, a plurality of through holes may be formed on the outer surface of the weights 23, and the weights may be utilized as reeds in the water.

The underwater buoyant body (24) is disposed coaxially with the column body (21) and fixed to the upper part of the weight. In addition, a stopper fastened to the column body may be installed at the upper end of the buoyancy member to prevent the buoyancy member from moving upward. The stopper may be a coupler that is tightened by a bolt while wrapping around the column body. Also, the underwater buoyant body 24 may have a plurality of through holes on the outer surface thereof to be utilized as a reed for the same weight. The weight weight and the underwater buoyant body may be provided in a form in which the cylinder is formed as one object or two or more bodies are separated so that a through hole through which the column body is inserted is formed by assembling.

In such a configuration, the weight 23 and the buoyant body 24 are placed in water so that only the column body 21 is positioned near the water surface where the wave pressure acts most. Therefore, since the wave pressure transmitted to the unit generators 20 from the vicinity of the water surface is transmitted only through the narrow area of the column body 21, the wave pressure transmitted to the unit generators can be minimized, have.

2, the water-state photovoltaic power generation apparatus 10 according to the present invention can be configured in the form of a cluster generators 30 in which a plurality of unit generators 20 are arranged in a checkered pattern to increase power generation capacity .

The cluster generators 30 may be spaced apart from each other by the gap maintaining means 31 between the unit generators 20 so that the cluster generators 30 can be arranged without colliding with each other during the water installation.

A rope can be used as the interval maintaining means 31. [ The present invention allows the structure to maintain sufficient spacing even with the tension of the rope without the use of conventional metal members, since the pressure due to the waves is minimized. The typical gap maintaining means 31 includes spacing ropes 32 connecting the adjacent unit generators to the front and rear of the arranged unit generators, and to the right and left.

3A, the gap holding rope 32 is connected to the column body portion at the lower end of the weight weight 23 and the column body portion at the upper end of the underwater buoyancy body 24. Therefore, the column body 21 is provided with a weight weight lower end coupled to facilitate the engagement of the gap retaining rope 32, and a side wall of the column body 21 on which the upper portion of the buoyant body is located, 213 and the lower ring 214 may be formed so that the gap holding rope 32 used as the gap maintaining means is engaged. The upper ring 213 and the lower ring 214 may also serve as stoppers to prevent the weight 23 and the buoyant body 24 from being separated from each other. The upper ring 213 and the lower ring 214 are formed so as to protrude longer than the weight of the weight mounted on the column body and the width of the buoyant body, So that the retaining rope can be easily connected.

The gap maintaining rope 32 connected between the adjacent unit generators includes a horizontal connecting rope 321 connecting the upper loops 213 of the two unit generators and the lower loops 214, A diagonal connecting rope 322 connecting diaphragm 213 and lower ring 214 diagonally is formed together to uniformly transmit the tension acting in the direction in which the two unit generators move away to the unit generators uniformly, It is preferable that the tension in the horizontal direction is applied while maintaining the vertical state.

In addition, the horizontal connection rope may be provided with a horizontal interval adjustment pipe having a length shorter than the length of the horizontal connection ropes, thereby providing a gap of at least the horizontal interval adjustment pipe length. For example, the horizontal spacing pipe may be provided with a horizontal connection rope of either or both of two vertically connected ropes to provide a minimum spacing. At both ends of the horizontal connection rope, rubber taps for relieving shocks may be mounted so that the collision load can be absorbed when colliding with a column body of a unit foot or a weight or a buoyant body. The horizontal gap adjusting pipe may be formed to be 0.5 to 0.8 times the horizontal connecting rope length to maintain a minimum gap or a gap of a predetermined width.

Next, the mooring rope (33) is further fastened to the gap holding means (31). 2 and 3B, the mooring rope 33 includes an upper ring formed on the column body of the unit generators positioned at the outermost corner of the cluster generators 30, and a plurality of Rope, and pulls it to the outer side to provide a tension in the outward direction over the whole cluster assembly. The mooring rope 33 is installed at a position spaced a certain distance from the corners of the cluster generators 30 to provide a tension by connecting the fixed facilities and the army or by attaching a fixed weight 331 And a tension is provided to connect the cluster generators 30 to each other by applying various known means such as providing a tension by connecting the fixed generators 30,

4, the mooring rope 33 may further include a plurality of auxiliary buoyancy members 332 on a line. The auxiliary buoyant body 332 mounted on the mooring rope cancels the load of the mooring rope, which reduces the force pulling the unit foot downward and provides the effect of acting the tension in the maximum lateral direction.

In addition, when the length between the fixed weight 331 and the cluster generators 30 is shortened due to the water level variation, the mooring rope is loosely connected downward without connecting the fixed weight and the cluster head in a straight line. When the mooring rope is loosened, downward deflection occurs due to its own load, and a part of the unit generators constituting the cluster generators is pulled down by the sagging to change the angle of the solar panel.

Therefore, when the auxiliary buoyant body 332 is additionally attached to one or more points on the mooring rope 33, the buoyancy of the additional buoyant buoyant body floats the mooring rope upward, It is possible to connect the generators 30 convexly upwardly rather than downwardly. This makes it possible to reduce the tension change caused by the change of the mooring rope length between the cluster generators and the fixed weight weights by the buoyancy of the buoyant buoyant 332, The tension of the mooring rope pulling the whole can be maintained. In addition, the downward pulling force of the crowd generator due to the downward deflection of the mooring rope can be minimized, so that the tension can be maintained in the horizontal direction as much as possible.

5A and 5B, the unit generators 20 according to the present invention include a pole tube 21 divided into an upper rotating tubular member 25 and a lower fixed tubular member 26, The unit generators 20 disposed on the same line of the unit generators are connected by a connecting member 253 and a rotary motor 27 is mounted on the lower fixed tubular body 26 on any one of the unit generators Thereby causing the upper rotating tubular body 25 to rotate. Since the plurality of unit generators 20 disposed on the same line as the unit generators to be rotated are integrally connected by the link members 253, the rotational force of the rotational motors 27 is transmitted through the link members 253 It is also transmitted to the unit pedestals, and a plurality of unit pedals on the same line can be rotated together through a single rotating motor.

The column tube body 21 rotatably mounts the upper rotary tubular body on the same shaft by coupling the upper rotary tubular body 25 and the lower fixed tubular body 26 with bearings.

A supporting member 251 protrudes from the upper rotating tubular body 25 in the forward and backward directions and the supporting members 251 are connected to each other through the adjacent unit generators interconnection members 253 in the lateral direction. For example, the connecting member 253 may be formed of a metal or a metal tube or rod formed of a resin or metal so as to connect the supporting members. The supporting member 251 may be formed on the lower side of the solar cell plate so that the solar cell plate is rotated without being interfered with the supporting member and the connecting member. Also, as a connection method between the support members 251, a plurality of support members may be formed by connecting the connection members 253 together, or a plurality of connection members may be formed so that adjacent support members are connected to each other, And a plurality of fastening members such as a collar and a clamp can be used in the connection process.

A rotary motor 27 is mounted on the lower fixed tube 26. Preferably, the rotary motor 27 is installed at a position above the water level when the unit generators are installed, and preferably it is installed at a position that is not locked by waves. A driving gear 271 is integrally coupled to the rotary shaft of the rotary motor 27 and a gear portion 252 engaged with the driving gear 271 is coupled to the upper rotary tubular body 25 along the outer surface of the lower rotary tubular body And the rotating force of the rotating motor 27 is transmitted to the gear portion 252 through the driving gear 271 to rotate the upper rotating body 25 clockwise or counterclockwise. At this time, the supporting member 251 protruding in the front-rear direction of the upper rotating tubular body 25 is also rotated in the rotating direction of the upper rotating tubular body, and any one of the connecting members 253 connected to the two supporting members is pulled in the rotating direction , The pulling force of the connecting member is transmitted to the upper rotating body of the other unit generators connected to the connecting member so that the plurality of unit generators are simultaneously rotated by the single rotating motor.

As the sun moves, the upper rotating tubular body rotates to direct the direction of the solar panel toward the sun, thereby maximizing the incidence of sunlight, thereby greatly increasing the photovoltaic generation while minimizing the additional facility cost due to the rotation of the solar panel.

In addition, the rotation of the solar panel may be accomplished by mounting a sun position sensor and rotating the power transmission of the rotary motor by the control unit according to the position of the sun. In each of the individual unit generators, The solar panel can be moved considering the direction of the sun and the altitude.

When the column body is divided into the upper rotating body and the lower fixed pipe, the inlet / outlet hole 211 is formed in the upper portion of the lower fixed pipe body 26 to inject air by the compressor 212 into the lower fixed pipe body. So that the buoyancy of the column body itself can be finely adjusted. By adjusting the buoyancy force through the column body, the degree of float projection of the unit pedestal can be controlled with respect to the water surface. Finally, the height of the solar panel is finely adjusted so that the solar panel of the rear line is obscured by the front line, The incident amount can be prevented from being lowered.

The water photovoltaic device of the present invention installed in this way connects each unit generator with electric wires and connects the electric wires to a charging device installed on the land to store the electricity converted from the sunlight, , It is possible to connect the power supply directly to the use place.

10: Water Photovoltaic Device
20: Unit Foot Whole
21: column body 22: solar panel
23: weight weight 24: underwater buoyancy
25: upper rotating tubular body 26: lower fixed tubular body
27: Rotary motor
211: Input / output ball 212: Compressor
213: upper ring 214: lower ring
251: Support member 252:
253: connecting member 271: driving gear
30: The whole cluster foot
31: spacing maintaining means 32: spacing maintaining rope
33: Mooring ropes
321: Horizontal connecting ropes 322: Diagonal connecting ropes
331: fixed weight 332: auxiliary buoyant body

Claims (8)

In a solar photovoltaic device,
A column tube (21) vertically erected; A solar panel (22) installed at the upper end of the column body with a bracket; A weight 23 as a cylindrical weight coupled coaxially to the lower end of the column body; And a buoyant buoyant body (24) which is fixed in a coaxial manner with the column body at the upper part of the weight and which is disposed underwater and provides buoyancy,
A plurality of the unit generators 20 are arranged in a grid pattern by means of spacing means 31 to constitute a cluster generators 30 for power generation,
The column body 21 of the unit generators is coupled with the upper rotating tubular body 25 and the lower fixed tubular body 26,
The upper rotating tubular body 25 includes a support member 251 protruding in the forward and backward directions and a plurality of support members of the plurality of unit generators disposed in the adjacent back and forth direction or in the left and right direction, And a connecting member 253,
A gear portion 252 is formed along the outer surface at the lower end side of the upper rotating tubular body 25 and the lower fixed tubular body 26 A rotating motor 27 having a driving gear 271 engaged with the gear portion 252 is fixedly mounted to the upper rotating tubular body 25 by driving the rotating motor 27 to rotate the upper rotating tubular body 25, And the upper rotating body of the other unit generators of the adjacent line connected to the upper rotating body is also rotated. delete The method according to claim 1,
The upper end of the column body 21 is closed and the lower end thereof is opened. An inlet / outlet hole 211 is formed in an upper side of the column body 21, and a compressor 212 is installed in the inlet / And the buoyancy of the column body can be finely adjusted by controlling the compressor. The method according to claim 1 or 3,
The gap maintaining means 31 includes a gap maintaining rope 32 connecting between the unit generators 20 arranged close to the front or the rear or the right and left and the unit generators located at the outermost corner of the group generators 30, And a mooring rope (33) for providing a tension to be pulled toward the side of the aft photovoltaic power generating device. 5. The method of claim 4,
The column body 21 has an upper ring 213 and a lower ring 214 formed on the upper side of the underwater buoyancy body coupled with the lower end in four directions,
The gap maintaining rope 32 includes a horizontal connection rope 321 for horizontally connecting the upper ring or the lower ring between adjacent unit generators and a diagonal connection rope 322 for connecting the upper ring and the lower ring between adjacent unit generators, And a second photovoltaic power generating unit for generating photovoltaic power. 6. The method of claim 5,
The mooring rope 33 is connected at one end to the column body of the unit generators located at the outermost corner of the cluster generators 30 and the other end is fixed to the floor of the installation site so that a tensile force pulling out the cluster generators is formed. And the solar cell is configured to be installed. delete The method according to claim 1,
Wherein the weight weight (23) and the underwater buoyant body (24) are formed as a plurality of through holes so that the fish can be used as a resting fish.

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