CN202550924U - Solar photovoltaic power generation set based on water-ponding strip mine pit - Google Patents

Abstract

The solar photovoltaic power generation device based on the Jishui open-pit pit includes platform-supported photovoltaic modules, cables and inverter equipment. The platform-supported photovoltaic modules include buoys to form a floating platform on the water surface and connecting devices, platform fixing and adjusting devices, photovoltaic modules and Bracket; the bracket is connected between the buoys, the photovoltaic module is installed on the bracket, and the cap fixing and adjusting device is to build foundation piles and pile caps at the side or the center of the pit and erect ropes, and install rope sliding components on the pile caps. The utility model solves the following problems: (1) effectively utilizes the accumulated water surface of the open-pit pit which is extremely difficult to develop; (2) effectively solves the problem of power station installation and service life caused by the complex geology of the successive subsidence areas of the mine pit; (3) ) Effectively solve the problems of intensive and efficient implementation and post-maintenance in the construction of photovoltaic power plants.

Description

Solar photovoltaic power generation device based on Jishui open pit

Technical field:

The utility model relates to a solar photovoltaic power generation device. the

Background technique:

Solar photovoltaic power generation devices have been widely used on the ground and roof, and the installed solar power generation system has become an important aspect of human energy application. Ground and rooftop solar power systems do not have tracking devices. the

In human activities of mining various minerals (such as coal, heavy metals, etc.), open pits with a large area and considerable depth are often formed. Due to terrain, hydrogeological and other reasons, these open pits often collect atmospheric precipitation, groundwater, and mining activities. The generated waste water and other water sources form a specific type of artificial lake, that is, the water in the open pit. the

The stagnant water of open-pit mines located in the mining area is usually rich in slag, heavy metals, arsenic, cadmium, copper, zinc, pyrite, sulfuric acid and other chemical substances, which is manifested as highly acidic sewage, and aquatic organisms cannot survive in such water bodies , and the water for human life and industrial and agricultural production cannot be obtained from such water bodies. At the same time, the accumulated water in the open pit also occupies a large amount of land, but cannot produce any benefits. It can be seen that water accumulation in open-pit mines has become a major environmental pollution and land occupation problem that needs to be solved urgently. the

Utility model content:

The purpose of this utility model is, in order to solve the above problems, especially in consideration of the shortage of usable land area and the lack of energy in the central and eastern regions of our country, but at the same time there are a large number of unusable large-area open-pit water accumulations. The solar photovoltaic power generation device for water open-pit mines combines the water surface utilization technology of open-pit mines with solar (photovoltaic, photothermal) power generation technology, and designs a solar energy system based on open-pit water with good economics and engineering. Power generation device to realize the effective utilization of the water surface area and cooling effect of the open mine pit, especially the solar power generation system is a power generation system with a tracking device. The output of clean electricity for domestic use and industrial and agricultural production makes it possible to create economic benefits for power generation as well as social benefits for reducing emissions and protecting the environment. the

The purpose of this utility model is especially: to propose a photovoltaic power generation scheme suitable for the polluted open pit water, including: safe, stable, anti-corrosion, environment-friendly water surface floating caps and related interconnections, Components such as battery installation and cable connection; design and implementation methods for open-pit water-surface photovoltaic power generation systems that are suitable for different geographical regions, climate environments, geological structures, areas and water quality. The photovoltaic modules are installed in the platform mode, the power transformation and distribution room is designed in the container mode, and the platform design of different schemes is used in different mining areas or in different areas of the same mine pit. the

The technical scheme of the utility model is: a solar photovoltaic power generation device based on the open pit of accumulated water, including platform-supported photovoltaic components, cables and inverter equipment, and is characterized in that the platform-supported photovoltaic components include buoys to form a floating platform on the water surface and connecting devices , Cap fixing and adjusting device, photovoltaic module and bracket; the bracket is connected between the buoys, the photovoltaic module is installed on the bracket, and the cap fixing and adjusting device is to build foundation piles and pile caps and erect ropes at the edge or center of the pit, A rope sliding member is installed on the pile cap. the

The bearing platform is equipped with a device that tracks and rotates with the change of the sun's azimuth angle. the

The buoy is made of compressed foam particles or the buoy is a hollow cylinder (either metal or plastic). the

The solar photovoltaic power generation device based on Jishui open-pit pit, including platform-mounted photovoltaic modules, electrical equipment, environmental detectors, monitoring equipment, cables and inverter equipment, and platform-mounted photovoltaic modules include water surface floating platforms and connecting devices, platforms Fixing and adjusting devices, photovoltaic modules and brackets and other components; the cap fixing and adjusting device is to build foundation piles and erect ropes on the bank of the water-logged mine pit, and install rope sliding components on the foundation piles; the ropes pass through the caps (sliding ) slot to eliminate invalid float moves. The cap is equipped with sliding slots to eliminate the impact caused by small fluctuations in the water level of the accumulated water pit, and the pile foundation is provided with sliding components to eliminate the impact caused by large fluctuations in the water level of the accumulated water mine. the

The bearing platform can track and rotate with the change of the sun's azimuth angle, and can float up and down with the pit water, and effectively use the temperature drop characteristics of the water surface to improve the power generation efficiency of photovoltaic modules, so as to realize the increase of power generation per unit module area and be able to adapt independently Changes in water levels in mine pits. the

The cap adjustment device is that the rope sliding member installed on the foundation pile is equipped with a rope winding drive device, and the rope on the foundation pile at different positions is driven by electric or manual operation to change the length of the cap. change while tracking the rotation. the

The first type of cap is made of splicing and combining floating barrels. At present, floating barrels are mature components in the market and can be purchased directly. The second type of cap adopts a self-designed special cap mold for aquatic photovoltaics to produce a special floating cap and reduce the cost of mold design through mass production. the

The material of the floating bucket is compressed foam particles, and the hard link part of the floating bucket and the special photovoltaic bearing platform mold can be made of engineering plastics. All materials in the two schemes are anti-corrosion, anti-freezing, anti-oxidation, anti-ultraviolet reinforced materials, and are not subject to heavy metals in open pits. Water, chemicals, agents, oil stains and (possible) erosion of aquatic organisms; no pollution, no damage to the environment. The bearing platform has high bearing capacity, the cylinder body is stable and durable, the shape is professional, and the installation is easy. The design fully considers its wind load, heavy snow accumulation of the 30-year standard and other relevant standards, and the bearing capacity of a single buoy and a single photovoltaic-specific platform have sufficient margins. the

The first type of cap can be assembled on land and launched as a whole, or it can be partially installed and launched first, and the first launched part can be used as an operation platform for subsequent installation. The second type of cap adopts micro-modular installation, which is completely configured according to the needs of the construction site. The two solutions are easy to assemble, fast, flexible, and have diverse shapes. The overall structure adopts a modular structure, which can quickly change the shape of the platform to meet the needs of various situations. the

The structure of the bearing platform is: a single-component modular interconnected bearing platform is used to form a special floating photovoltaic module bearing platform. The dimensions and specifications of the photovoltaic modules can be adjusted and assembled; the inclination angle of the modules can be adjusted according to the latitude and climate conditions of the project and the characteristics of the photovoltaic modules; according to the economic and technical indicators of the project, the modular cap strings can be configured to form cap strings. the

The utility model is an organic combination of the effective utilization of open-air water-logged mine pits and green energy, and is suitable for the design and implementation method of photovoltaic power generation systems for open-air pit-water-logged water surfaces composed of different geographical regions, climate environments, geological structures, areas and water quality. The photovoltaic modules are installed in the platform mode, the power transformation and distribution room is designed in the container mode, and the platform design of different schemes is carried out in different mining areas or in different areas of the same mine pit. The utility model aims at various open-air water-logging pits (including polluted open-air water-logging pits), and designs a photovoltaic power generation scheme suitable for this environment. Its core elements include the water bearing platform, which adopts multi-component modular unit bearing platform, and assembles multiple solar photovoltaic modules into the modular unit bearing platform. The number, inclination and electrical equipment design of photovoltaic modules installed on the same platform can be set and configured according to the selection of different photovoltaic modules and the economic and technical indicators of the project. The cap is connected to the cap pile by a rope (steel or stainless steel cable or chain, nylon rope, etc.), and the same cap pile can be connected to multiple caps. the

The electrical equipment of photovoltaic modules, environmental detectors, monitoring equipment, and inverter equipment other than platform-based modularization are existing installations. the

Installation of electrical equipment: The above two caps schemes can be installed in centralized (container movable electrical equipment center) and decentralized (independent box scattered around the open water pit) installation. These two installation methods are installed through cap piles and Ropes are used to eliminate the impact caused by water level changes, thereby solving the problem of offshore power transmission. Using wireless communication technology to realize data collection and transmission, so as to conveniently implement operation monitoring, offshore diagnosis and data maintenance. the

The utility model is suitable for the solar photovoltaic power station system scheme in the environment of open-air water accumulation pits. The system application includes: electrical equipment, environmental detectors, monitoring equipment, inverter equipment, etc., as well as the application of photovoltaic power generation in the entire field of open-air mines . the

The beneficial effects of the utility model are: the solar power generation device based on the accumulated water in the open-pit can realize the effective utilization of the water surface area and cooling effect of the accumulated water in the open-pit through the safe, stable, anti-corrosion and environmentally friendly water surface floating cap, and can design Solar power systems are equipped with tracking devices. The output of clean electricity for domestic use and industrial and agricultural production makes it possible to create economic benefits for power generation as well as social benefits for reducing emissions and protecting the environment. The utility model can effectively utilize the widely distributed and abandoned and useless open-pit water surface, and build a large-scale solar photovoltaic power generation system at a relatively low cost without occupying industrial and agricultural land, output clean energy, and provide life and work. Agriculture uses electricity to obtain good social and economic benefits. the

The utility model proposes a solar photovoltaic power station system scheme suitable for the environment of open-air water accumulation mine pits, including: electrical equipment, environmental detectors, monitoring equipment, inverter equipment, platform-mounted modular photovoltaic components, etc., and photovoltaic power generation in the field of Application in all fields in open-pit mines, beneficial innovation for energy saving and emission reduction. The utility model solves the following problems for the photovoltaic power generation system in the open pit water environment: (1) effectively utilizes the open pit water surface which is extremely difficult to develop, and solves the problem of land resources occupied by photovoltaic power generation in this type of environment. (2) It effectively solves the problems of power station installation and service life caused by the complex geology of the successive subsidence areas of the mine pit. (3) Effectively solve the problems of intensive and efficient implementation in the construction of photovoltaic power stations, the complex technology of later maintenance and the uncertainty of mining area subsidence. The core of the utility model is the organic combination of the effective utilization of open-air water-logged mine pits and green energy, and its core elements include A. the design of the water bearing platform, and B. a solution to the problems faced by the photovoltaic power generation system in the water-logged environment of the open-air mine pits. plan. the

The economics of the utility model open-air water-logging mine power generation device are also obvious: zero cost for land use; the equipment manufacturing, civil engineering and installation works of the open-air mine power generation system for power conversion and distribution are all standardized. Compared with the ground photovoltaic power generation system, Design and manufacturing costs and management costs are reduced. The processing technology of the photovoltaic bearing platform is mature, the materials are common, the cost is economical, the installation and operation of the bearing platform are simple, and the maintenance cost is low in the later period. the

Description of drawings

Figure 1 is a top view of the utility model photovoltaic unit module

Fig. 2 is the utility model pile cap structure schematic diagram;

Fig. 3 is the utility model side bracket installation schematic diagram;

Fig. 4 is a schematic diagram of the connection between the pile cap and the unit module of the utility model;

Fig. 5 is a schematic diagram of installation of the side bracket of the utility model application example;

Figure 6 is a schematic diagram of the slot for fixing the battery board of the present invention;

Fig. 7 is a schematic diagram of the special floating tank of the utility model. the

Buoy 1, horizontal surface 2, collar 3, embedded rod 4, steel cable 5, pile 6, pile cap 7, unit module photovoltaic module 8, steel support 9. the

Detailed ways:

Embodiment of solar photovoltaic power generation scheme for open-air water-logged mine pits: the following description is an example of the application of the utility model "solar photovoltaic power generation device for open-air water-logged mine pits". The utility model includes but not limited to the following application examples. the

1) Layout of photovoltaic power generation system

This application uses amorphous silicon thin film solar cells as an example (monocrystalline or polycrystalline silicon solar cells with higher efficiency can also be used), the unit module consists of 108 photovoltaic modules, and a single photovoltaic module is arranged in a horizontal direction (the long side of the photovoltaic module is arranged in an east-west direction) Place 9 blocks vertically, connect them in series to form a string, place 12 strings horizontally, and finally connect them to the 12-in-1-out combiner box. the

Using floating barrels as the module bearing platform, 9 floating barrels are evenly arranged in the north-south direction, and the floating barrels are placed horizontally, with an interval of 13cm between each other; . There are photovoltaic unit mounting brackets between adjacent buoys to form a bearing platform. The bracket above the bearing platform is a bracket with a height of 80 cm at the low end on the south side and 1350 cm at the high end on the north side. It is used to fix the solar panel. The installation angle of the photovoltaic unit module is 10 degrees-35 degrees (solar panels have different inclination angles at different geographic latitudes). the

The cap fixing device can arrange multiple piles around each unit module to fix the cap. Figure 4 shows the cap fixing device. The main body is a pile and a pile cap made of concrete, and a waterproof and anti-corrosion pre-buried Rods are connected to the section steel in the unit module by using collars and ropes. The buoys are connected by ropes, and photovoltaic unit mounting brackets are installed between the buoys to form a platform that can float up and down with the fluctuation of the water surface. The mounting brackets for photovoltaic units are provided between the buoys, which can be used vertically or horizontally, or horizontally and vertically. the

When the total capacity of the designed unit module photovoltaic modules is 4968Wp, 68 floating buckets are shared, and each is calculated at 70 yuan, which costs 4760 yuan, so the investment in floating buckets is about 958 yuan per kilowatt. Assuming that the power generation capacity of this device is 500kW and a 500kW inverter is selected, the whole system consists of 100 unit modules connected to each other. There are 1200 strings of photovoltaic modules and 100 combiner boxes are required. In order to simplify the wiring and reduce the amount of cables, To reduce the complexity of construction, several combiner boxes can be combined for the second time, and then connected to the inverter. the

2) Another embodiment: Floating buckets are arranged on both sides of the photovoltaic module and between each other as the photovoltaic module bearing platform, and 11 floating buckets are evenly arranged in each row in the east-west direction. the whole frame. A bracket with a height of 80 cm at the low end on the south side and 1050 cm at the high end on the north side is laid on the cap platform to fix the solar panels. The installation angle of each solar panel is 10 degrees, and the interval between each row is 40 cm. the

See Figure 1 for the top view of the unit module of the photovoltaic system, and Figure 3 for the installation schematic diagram of the side section bracket. the

The module fixing method is the same as the application of the above-mentioned embodiment. A multi-pile cap is arranged around each photovoltaic unit module. It is connected with the section steel in the unit module, and can float up and down with the fluctuation of the water surface. the

For example, if the total capacity of the designed unit module photovoltaic modules is 6624Wp, and there are 99 shared floating buckets 1, and each one is calculated at 70 yuan, it will cost 6390 yuan, so the investment in floating buckets is about 1046 yuan per kilowatt. Assuming that the power generation capacity of this example is 500kW, and a 500kW inverter is selected, the whole system consists of 75 unit modules connected to each other. There are 1200 strings of photovoltaic modules, and 75 combiner boxes are required. In order to simplify the wiring and reduce the amount of cables, To reduce the complexity of construction, several combiner boxes can be combined for the second time, and then connected to the inverter. The total capacity is 9×16×75×46Wp=496800Wp. the

3) This application uses polysilicon solar cells as an example. The unit module is composed of 20 photovoltaic modules. A single photovoltaic module is placed vertically (the long side of the photovoltaic module is arranged in a north-south direction), and 20 modules are placed horizontally and connected in series to form a string. It is a unit module. 11 unit modules form a module group, and are finally connected to a 12-in and 1-out combiner box. The schematic diagram of photovoltaic module connection is shown in Figure 1. The schematic diagram of photovoltaic module layout. the

The buoys are placed vertically, and a solar panel (photovoltaic module) is erected on top of the two buoys. It is connected to the buoy on the north side through a 90cm bracket. The north-south spacing of each unit module is at least 2m apart, and the flexible connection is made through circular steel. See Figure 1 for the top view of the photovoltaic system unit module, Figure 5 for the schematic diagram of side bracket installation, and Figure 6 for the schematic diagram of the card slot. the

See the pile caps for the module fixing method. Multiple pile caps are arranged on the east and west sides of each unit module. It is connected with the section steel in the unit module, and can float up and down with the fluctuation of the water surface. the

The total capacity of the unit module photovoltaic modules is 4600Wp, and there are 40 shared floating buckets, each of which is calculated at 70 yuan, which costs 2800 yuan, so the investment in floating buckets is about 609 yuan per kilowatt. the

Assuming that the power generation capacity of this project is 500kW and a 500kW inverter is selected, the entire system consists of 110 unit modules connected to each other, 110 strings of photovoltaic modules, and 10 combiner boxes are required to connect to the inverter. the

The total capacity is 20×11×10×230Wp=506000Wp. the

If the water surface is not large, four pile caps can also be arranged at the four corners of the puddle, and all photovoltaic system unit modules can be fixed on these four larger pile caps, so that the installation cost is lower. the

4) In this example, amorphous silicon thin-film solar cells are used. The long side of the battery board of the photovoltaic unit is placed in the groove of the grooved pontoon, fixed by bolts, and the inclination of the battery board can be adjusted. In this example, each battery board is an independent structure, which can be connected to each other through the diagonal connection ears of the floating tank according to the shape of the water area and design requirements, and assembled into power generation systems of different sizes, which is different from the several panels in the above three application examples. The battery board is fixed on the buoy platform through a steel frame, and it is no longer limited to modules of fixed size. the

Groove type pontoon is shown in Fig. 7. The lower part is a buoy structure, with two vertical round holes in the middle, which are used to place round rods to fix the distance between the two pontoons, and there are diagonal connecting ears at the four corners; the upper half of the grooved pontoon Some of them are equipped with grooves on the long side of the battery board for placing the photovoltaic unit. Customized. the

Claims (7)

1. based on the solar energy photovoltaic generator in the open-air pit of ponding; Comprise cushion cap photovoltaic module, cable and contravariant equipment, it is characterized in that the cushion cap photovoltaic module comprises that floating drum constitutes floating cushion cap of the water surface and jockey, cushion cap is fixing and adjusting device, photovoltaic module and support; Support is connected between the floating drum, and photovoltaic module is rack-mount, and cushion cap is fixing and adjusting device is on the limit, pit or central authorities set up foundation pile and pile framing and set up rope, installing rope slip member on the pile framing.

2. the solar energy photovoltaic generator based on the open-air pit of ponding according to claim 1 is characterized in that cushion cap is provided with the device of following the tracks of rotation with the variation of solar azimuth.

3. the solar energy photovoltaic generator based on the open-air pit of ponding according to claim 1 and 2 is characterized in that said cushion cap adjusting device is, foundation pile is provided with the rope coiling drive unit that connects cushion cap.

4. the solar energy photovoltaic generator based on the open-air pit of ponding according to claim 1 and 2 is characterized in that floating drum adopts compression foam particle or hollow cylindrical shell.

5. the solar energy photovoltaic generator based on the open-air pit of ponding according to claim 1 and 2, it is characterized in that the structure of cushion cap is: a plurality of floating drums combine, and are connected to form photovoltaic module installation template cushion cap through the engineering plastics screw rod.

6. the solar energy photovoltaic generator based on the open-air pit of ponding according to claim 1 and 2 is characterized in that four jiaos in the pit are provided with four pile framings, at the fixing all cushion cap photovoltaic modulies of these four bigger pile framings.

7. the solar energy photovoltaic generator based on the open-air pit of ponding according to claim 1 and 2; It is characterized in that said floating drum is the groove type buoyancy tank; The latter half of groove type buoyancy tank is a floating box structure, in the middle of the buoyancy tank two vertical circular holes is arranged, and there is the diagonal angle engaging lug at the position, four corners of buoyancy tank; The first half of groove type buoyancy tank is provided with the cell panel long side groove of placing photovoltaic cells, and groove is slotted at a side direction, and there is set bolt on the top of groove.

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