CN205232099U - Photovoltaic mounting system on water - Google Patents

Abstract

The utility model provides a photovoltaic support system on water, which includes a floating box (1). Photovoltaic panel installation parts are arranged on both ends or two sides of the top surface of the floating box (1), and every two floating boxes (1 ) constitute a platform unit, and the buoyancy tanks (1) of the same platform unit are connected by several connectors (7); Fixed connection. The utility model arranges the photovoltaic panel (8) above the water area between the two floating tanks (1), fully utilizes the continuous circulation water cooling principle between the photovoltaic panel and the water surface to realize double continuous circulation cooling of the photovoltaic panel, and improves the efficiency of the photovoltaic panel. output power and prolong the life of photovoltaic panel materials.

Description

Water Photovoltaic Mounting System

technical field

The utility model relates to photovoltaic power generation, in particular to a photovoltaic support system on water.

Background technique

my country is one of the few countries in the world that uses coal as the main energy source. About 65% of primary energy production and consumption is coal, and a large amount of coal is used, so that 66% of China's urban air particulate matter content and 22% of urban air sulfur dioxide content exceed The national air quality secondary standard. The use of coal and fossil energy emits a large amount of pollutants, leading to air pollution and acid rain pollution, which has seriously deteriorated the air quality of Chinese cities. China has 16 of the 20 most polluted cities in the world listed in the 2001 World Bank Development Report. In areas with severe air pollution, the total mortality and incidence of respiratory diseases are higher than those in lightly polluted areas. Symptoms of chronic bronchitis aggravate with the increase of air pollution level. In China's 11 largest cities, smoke and fine particles in the air cause 50,000 premature deaths and 400,000 chronic bronchitis infections every year. According to the current development trend, the World Bank estimates that the economic cost of diseases caused by coal-burning pollution in China will reach 390 billion US dollars in 2020, accounting for 13% of the GDP. This has drawn great attention from the Chinese government. Facing the severe environmental crisis brought about by the current consumption of coal and fossil energy, it is urgent to adjust the energy structure.

According to the National Development and Reform Commission's "China Photovoltaic Industry Development Research Report (2006-2007)", if there is no new detection, the current global oil is only enough for 45 years, while China is only enough for 15 years; the global natural gas is only enough for 61 years, while China can only use it for 30 years; global coal can only use it for 230 years, while China can only use it for 81 years; even uranium mines for nuclear power can only be used globally for 71 years, while China can only use it for 50 years. As the largest developing country in China, the problem of energy shortage is even more serious. Therefore, it is urgent to find alternative energy sources. Solar energy is an abundant, clean and renewable new energy source. Its development and utilization are of great significance to alleviate the energy crisis, protect the ecological environment and ensure the sustainable development of the economy.

For large-scale photovoltaic power plants covering a large area, the western region with long sunshine hours and large areas of cheap desertified land is undoubtedly the first choice. However, because the western region is far away from the load center, the problem of light abandonment of photovoltaic power plants in some areas has not been well resolved. While developing photovoltaic power plants in the eastern region, although there is no need to worry about grid connection, the densely populated and scarce land resources in the eastern region have become obstacles that restrict the development of large-scale photovoltaic power plants. Therefore, it is necessary to find a way to develop photovoltaics that does not occupy useful land resources such as cultivated land and commercial land. The floating photovoltaic power station model can well solve the thorny problem of scarcity of land resources. The rich river bends, lakes, fish ponds, reservoirs and other resources in many areas of our country allow the development of places with dense population, scarce land and large electricity load. Photovoltaic power generation becomes possible.

At present, foreign countries and domestics basically use large-scale ground photovoltaic power plants to generate electricity and rooftop photovoltaic power generation models, and hardly use water surface resources for photovoltaic power generation. The only design is to build a floating body composed of several small floating bodies on the water. For the floating platform with gaps, photovoltaic panels are directly laid on the floating platform or metal brackets are built on the floating platform to install photovoltaic panels. Such a design scheme is not effective in wind pressure and wave resistance, and uses the principle of air cooling, resulting in The low power generation efficiency of photovoltaic panels has always limited the application and development of photovoltaic power plants on water. Therefore, it is necessary to carry out a practical new design for the floating photovoltaic support system on the water, and introduce a floating platform device with simple processing, low price, energy saving and environmental protection, convenient installation, easy operation, and secondary recycling, so as to promote the application and development of photovoltaic power plants on the water and promote photovoltaic The technological progress of the industry has broken through the limitations of the construction site of photovoltaic power stations.

Therefore, design a floating platform device with simple processing, low price, energy saving and environmental protection, convenient installation, easy operation, and secondary recycling. A good closed space is formed with the water surface, which enables continuous heat exchange between the photovoltaic panel and the water surface, and improves the power output of the photovoltaic panel.

Solve the wind pressure resistance, wind wave resistance, corrosion resistance and photovoltaic panel cooling problems of the photovoltaic power station on the water, prolong the service life of the photovoltaic power station and increase the power output. Promote the application and development of photovoltaic power stations on water, promote technological progress in the photovoltaic industry, and break through the limitations of photovoltaic power station construction sites.

Utility model content

Aiming at the defects in the prior art, the purpose of this utility model is to provide a photovoltaic support system on water.

According to the utility model, the photovoltaic support system on water includes two or more floating boxes, and the two ends or two sides of the top surface of the floating boxes are provided with photovoltaic panel installation parts, and each two or more floating boxes constitute A platform unit, buoyancy tanks of the same platform unit are connected by several connecting pieces.

Preferably, the photovoltaic panel installation part includes a first installation groove and a second installation groove; one side of the floating tank or one end of the top surface is provided with a first installation groove, and the other side of the floating tank or one end of the top surface The other end is provided with a second installation slot.

Preferably, the two pontoons of the same platform unit are respectively marked as pontoon A and pontoon B, and the pontoon A and the pontoon B are connected by several connecting pieces, and there is a A gap, the gap constitutes a ventilation channel, the bottom surface boundary of the ventilation channel is defined by the water surface between the buoyant tank A and the buoyant tank B.

Preferably, the two ends of the top surface of the buoyancy tank are not equal in height.

Preferably, a photovoltaic panel is also included, wherein one end of the photovoltaic panel is fastened on the first installation slot of the buoyant tank A, and the other end of the photovoltaic panel is fastened on the second installation slot of the buoyant tank B.

Preferably, the first installation groove of the buoyant tank A is connected to the second installation groove of the buoyant tank B through a supporting rod, and the photovoltaic panel is placed on the supporting rod.

Preferably, the height difference between the two ends of the top surface of the pontoon and the distance between two pontoons in the same platform unit make the surface of the photovoltaic panel in an inclined state, wherein the inclination angle of the photovoltaic panel ranges from 5 to 40 degrees.

Preferably, adjacent platform units are tightly connected by connecting pieces or matching structures on adjacent sides of the buoyancy tanks.

Preferably, after the plurality of platform units are fastened and connected, they are fixed and floated on the water surface by any one or multiple methods of sinking anchors, ground piles, and iron chains.

Preferably, the buoyant tank is a hollow buoy made of any one or more of plastics, polymer materials, lightweight metal materials, and inorganic non-metallic materials.

Compared with the prior art, the utility model has the following beneficial effects:

1. The utility model is composed of two small floating tanks at the front and rear, which saves the floating tank directly supporting the photovoltaic panel in the middle, simplifies the structure, and saves materials to the greatest extent. When installing, insert one side of the photovoltaic panel into the installation groove of the floating tank. The other side is installed on the adjacent installation groove of another pontoon, eliminating the need for supports, and the installation is quick and easy.

2. The utility model provides a floating platform device that is easy to process, easy to install, easy to operate, energy-saving and environmentally friendly, and can be recycled. It breaks through the restrictions on the installation site of photovoltaic power stations and promotes the development of the photovoltaic industry.

3. The photovoltaic panels in this utility model are arranged on two small floating tanks at the front and rear and are close to the water surface, so the front of the photovoltaic panels can be used for air cooling, and the backside can use the principle of continuous circulation water cooling inside the closed space formed by the photovoltaic panels and the floating tanks. Double continuous cycle cooling of photovoltaic panels greatly improves the output power of photovoltaic panels, prolongs the decay period of photovoltaic panel materials and increases their service life.

4. The floating photovoltaic power station on the device in the utility model is covered on the water body, which can prevent algae from photosynthesis, inhibit the growth of algae, and reduce water pollution; and the floating photovoltaic support system and photovoltaic panels form a closed circulation system, reducing Water evaporates into the air, thus enhancing the water retention of the aquatic environment.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the front view of the unit structure of the floating platform of the floating photovoltaic power station on the water installed with photovoltaic panels;

Fig. 2 is the top view of buoyancy tank;

Fig. 3 is the front view of pontoon;

Fig. 4 is the right side view of pontoon;

Fig. 5 is the left side view of pontoon;

Fig. 6 is the top view of the unit structure of the floating platform of the floating photovoltaic power station installed on the photovoltaic panel;

Fig. 7 is a top view of the unit structure of the floating platform of the floating photovoltaic power station on the water without photovoltaic panels;

Fig. 8 is the top view that is provided with the pontoon of corner joint in the specific embodiment;

Fig. 9 is a front view of the unit structure of the floating platform of the floating photovoltaic power station on water with photovoltaic panels installed including corner joints;

In the picture:

1 - pontoon;

2 - one side of the pontoon;

3 - the top surface of the pontoon;

4 - the other side of the pontoon;

5 - the first installation slot;

6- the second installation slot;

7-connector;

8 - Photovoltaic panels;

9-support rod;

11 - pontoon A;

12 - pontoon B;

71 - the first connector;

72 - Second connector.

detailed description

The utility model is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present utility model. These all belong to the protection domain of the present utility model.

The above-water photovoltaic support system provided according to the utility model includes a floating box 1, and there are more than two floating boxes 1. The two ends of the top surface of the floating box 1 or the two sides are provided with photovoltaic panel installation parts, and every two or more The buoyant tanks 1 form a platform unit, and the buoyant tanks 1 of the same platform unit are connected by several connecting pieces 7 .

Specifically, the opposite surfaces of the two floating tanks in the same platform unit, the water surface between the opposite surfaces and the bottom surface of the photovoltaic panel jointly define the boundary of the ventilation channel.

The photovoltaic panel installation part includes a first installation groove 5 and a second installation groove 6; one side of the floating tank 1 or one end of the top surface is provided with the first installation groove 5, and the other side of the floating tank 1 Or the other end of the top surface is provided with a second installation groove 6 .

The two pontoons 1 of the same platform unit are respectively denoted as pontoon A11 and pontoon B12, and the pontoon A11 and the pontoon B12 are connected by several connecting pieces 7, and there is a gap between the pontoon A11 and the pontoon B12 , the gap constitutes a ventilation channel, and the bottom boundary of the ventilation channel is bounded by the water surface between the buoyancy tank A11 and the buoyancy tank B12.

The two ends of the top surface of the floating tank 1 are not equal in height.

The floating platform also includes a photovoltaic panel 8, wherein one end of the photovoltaic panel 8 is fastened on the first installation groove 5 of the buoyancy tank A11, and the other end of the photovoltaic panel 8 is fastened on the second installation groove of the buoyancy tank B12. Install in slot 6.

The first installation groove 5 of the buoyancy tank A11 is connected to the second installation groove 6 of the buoyancy tank B12 through a supporting rod 9 , and the photovoltaic panel 8 is placed on the supporting rod 9 .

The height difference between the two ends of the top surface of the pontoon 3 and the distance between two pontoons in the same platform unit make the surface of the photovoltaic panel 8 in an inclined state, wherein the inclination angle of the photovoltaic panel 8 ranges from 5 to 40 degrees.

Adjacent platform units are fastened through connectors or matching structures on adjacent sides of the buoyancy tanks 1 .

Specifically, as shown in Fig. 8 and Fig. 9, the way of setting corner joints on the four corners of the floating tank 1 is adopted in the figure, and the adjacent floating tanks can be fastened and connected by screws. In addition, it also includes buckles, slots and other matching forms to connect adjacent buoyancy tanks.

After the plurality of platform units are fastened and connected, they are fixed and floated on the water surface by any one or multiple methods of sinking anchors, ground piles, and iron chains.

The floating tank 1 is a hollow buoy made of any one or multiple materials of plastics, polymer materials, light metal materials, and inorganic non-metallic materials.

Specifically, as shown in Figure 1, the floating tank A11 and the floating tank B12 are connected by a connecting piece 7, and the photovoltaic panel 8 is fixed on the opposite side of the floating tank A11 and the floating tank B12 through the second installation groove 6, the A first mounting groove 5 is provided between the top surface and the other side of the buoyancy tank A11.

When specifically installing the photovoltaic panel, one side of the photovoltaic panel 8 is inserted into the second installation groove 6 of the floating tank A12, and the other side of the photovoltaic panel 8 is installed on the first installation groove 5 of the floating tank A11. A11 and A12 are fixed by connecting piece 7 to form a floating platform device. Several sets of floating platform devices are connected to each other to form the entire floating platform system. The surroundings of the floating platform system are fixed to the shore by iron chains, or the entire floating platform system is fixed by sinking anchors and ground piles.

Furthermore, side slots on both sides of the floating tank 1 can also be used to directly fasten the photovoltaic panel 8, or the photovoltaic panel can be clamped by cooperating with the supporting rod 9 through a transverse clamping groove.

When the photovoltaic panel 8 receives sunlight to generate electricity, the temperature of the photovoltaic panel itself will rise due to the thermal radiation of the sun and the conversion of internal energy. The open circuit voltage is determined by the bandgap width and Fermi level of the semiconductor. Since the higher the temperature, the closer the Fermi level is to the valence band, the higher the temperature, the smaller the open circuit voltage; the relationship between temperature and short circuit current is The higher the temperature, the greater the short-circuit current, but it should be noted that the rising trend of the short-circuit current here is smaller than the falling trend of the open-circuit voltage mentioned above; because the open-circuit voltage drops sharply when the temperature rises, and its magnitude is higher than that of the short-circuit current. The higher the range, the greater the total output power of the photovoltaic panel will be when the temperature rises, because P=UI. Therefore, it is necessary to cool down the working photovoltaic panel to reduce its working temperature and increase its power output.

The middle of the floating tank A11 and the floating tank A12 of the utility model is an open area, which is completely covered by the photovoltaic panel 8. When the photovoltaic panel 8 is working, the water surface evaporates and absorbs heat, so that the photovoltaic panel 8 can reduce the operating temperature to the greatest extent. Increase power output. In the space formed by the photovoltaic panel 8 and the whole set of floating platform, there are two sides that are penetrating areas, which can effectively increase the flow of wind, reduce the heat of the photovoltaic panel 8, and increase the power output of the photovoltaic panel 8 .

The photovoltaic panel 8, the floating tank A11, the floating tank A12 and the water surface form a basically closed system at the upper part. The water vapor evaporated on the water surface meets the photovoltaic panel and condenses and returns to the original water body environment, so that the water body environment can retain moisture to the maximum extent. Reduce moisture evaporation.

Furthermore, the material of the connecting member 7 includes but not limited to stainless steel, fiberglass, plastic, metal and the like.

Among them, the floating tank 1 in the utility model can be set as a hollow lightweight hexahedron, which can float on the water surface. The material of the floating tank 1 includes but is not limited to plastics, polymer materials, light metal materials, inorganic non-metallic materials Material.

The specific embodiments of the present utility model have been described above. It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the utility model.

Claims (8)

1. A photovoltaic support system on water, is characterized in that, comprises floating box (1), and floating box (1) is more than two, and the top surface two ends or two sides of described floating box (1) are provided with photovoltaic panel The components are installed, and every two or more buoyant tanks (1) constitute a platform unit, and the buoyant tanks (1) of the same platform unit are connected by several connecting pieces (7); The photovoltaic panel installation part includes a first installation groove (5) and a second installation groove (6); the first installation groove (5) is arranged on one side of the buoyancy tank (1) or one end of the top surface, and the buoyancy tank (1) is provided with a first installation groove (5). The other side of the box (1) or the other end of the top surface is provided with a second installation groove (6); The two pontoons (1) of the same platform unit are respectively denoted as pontoon A (11) and pontoon B (12), and one end of the photovoltaic panel (8) is fastened to the first installation groove of the pontoon A (11) (5), the other end of the photovoltaic panel (8) is fastened on the second installation groove (6) of the buoyancy tank B (12). 2. The photovoltaic support system on water according to claim 1, characterized in that, the floating tank A (11) and the floating tank B (12) are connected by several connectors (7), and the floating tank A (11 ), there is a gap between the floating tank B (12), and the gap constitutes a ventilation channel, and the bottom surface boundary of the ventilation channel is bounded by the water surface between the floating tank A (11) and the floating tank B (12). 3. The photovoltaic support system on water according to claim 1, characterized in that, the two ends of the top surface of the floating tank (1) are not equal in height. 4. The photovoltaic support system on water according to claim 1, characterized in that, between the first installation groove (5) of the floating tank A (11) and the second installation groove (6) of the floating tank B (12) The space is also connected by a supporting rod (9), and the photovoltaic panel (8) is placed on the supporting rod (9). 5. The photovoltaic support system on water according to claim 3, characterized in that the height difference between the two ends of the top surface of the floating tank (3) and the distance between the two floating tanks in the same platform unit make the photovoltaic panel (8) The surface is in an inclined state, wherein the inclination angle of the photovoltaic panel (8) ranges from 5 to 40 degrees. 6. The photovoltaic support system on water according to claim 1, characterized in that adjacent platform units are tightly connected by connecting pieces or matching structures on adjacent sides of the buoys (1). 7. The photovoltaic support system on water according to claim 1, characterized in that, after the plurality of platform units are fastened and connected, the floating platform is fixed by any one or multiple methods of sinking anchors, ground piles, and iron chains. on the water. 8. The photovoltaic support system on water according to claim 1, characterized in that, the floating tank (1) is made of any one of plastics, polymer materials, light metal materials, and inorganic non-metallic materials Hollow float.