Photovoltaic power station film covering and snow removing device

Abstract

The utility model discloses a photovoltaic power station film covering and snow removing device, which provides a snow removing scheme with lower cost and convenient operation for a photovoltaic power station, and comprises a reel, a snow-proof film, a running track and a snow-proof film traction component, the reel is arranged at the top of a photovoltaic bracket, is positioned below a photovoltaic module array in the longitudinal direction, and is used for winding the snow-proof film; the snow-proof film covers the photovoltaic module array before snowing and is rolled up by the reel during snow removal, and accumulated snow slides down from the snow-proof film in the rolling-up process; two running tracks extending from top to bottom along the longitudinal direction are arranged on the top of the photovoltaic bracket side by side, and the two running tracks are correspondingly arranged on the two transverse sides of the photovoltaic module array; the snow-proof film traction component is arranged on the two operation rails and connected with the moving end of the snow-proof film, and the snow-proof film traction component moves from the longitudinal lower sides of the operation rails to the longitudinal upper sides of the operation rails during film covering so as to drive the snow-proof film to be unwound from the reel and cover the photovoltaic module array.

Description

[Technical Field]

[0001] This utility model belongs to the field of photovoltaic power generation technology, specifically relating to a snow removal device for photovoltaic power plants. [Background Technology]

[0002] The cold winters and heavy snowfall in northern China pose significant challenges to the operation and maintenance of photovoltaic power plants. Snow accumulation and shading can have the following effects on photovoltaic power plants:

[0003] (1) Reduced power generation efficiency: Snow will block the photovoltaic modules, resulting in reduced light intensity, which in turn affects the power generation efficiency of the photovoltaic modules and leads to a significant decrease in the power generation of the photovoltaic modules.

[0004] (2) Damage to components: Long-term exposure to the heavy pressure of snow may cause photovoltaic modules to deform or be damaged. This risk increases further when the snow thickness exceeds the maximum load-bearing capacity of the modules, thereby affecting the lifespan and overall performance of the photovoltaic modules.

[0005] Currently, most photovoltaic power stations in northern China adopt truss and courtyard designs. Existing truss designs primarily involve cross-building construction, and single-slope designs can result in columns exceeding 8 meters in height. Given the height of the power station, manual snow removal is difficult. Therefore, snow removal equipment is used, including snowplows or snowplow robots. These machines and robots, through automatic control, can proactively clear snow after a snowfall, improving efficiency. However, snowplows and robots are also expensive, and often multiple users share a single machine, increasing maintenance costs and making timely snow removal difficult. [Utility Model Content]

[0006] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a snow removal device for photovoltaic power plants with film covering, which provides a lower cost and easier operation for snow removal in photovoltaic power plants.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A photovoltaic power station snow removal device with a film coating, wherein the photovoltaic power station includes a photovoltaic support frame and a photovoltaic module array mounted on the photovoltaic support frame, and the photovoltaic power station snow removal device with a film coating includes:

[0009] A reel, which is mounted on top of the photovoltaic support and located longitudinally below the photovoltaic module array, is used to wind up the snow-proof film;

[0010] A snowproof film that covers a photovoltaic module array when it snows, is rolled up by a roller during snow removal, and allows snow to slide off the snowproof film during the rolling process;

[0011] The operating track consists of two longitudinally extending tracks running from top to bottom, arranged side by side at the top of the photovoltaic support, with the two tracks corresponding to the horizontal sides of the photovoltaic module array.

[0012] A snow-proof film traction component is provided, which is located on two running tracks and connected to the moving end of the snow-proof film. When the film is being applied, the snow-proof film traction component moves from the lower longitudinal side to the upper longitudinal side of the running tracks to drive the snow-proof film out of the roll and cover the photovoltaic module array.

[0013] Preferably, the reel is driven to rotate by a first motor.

[0014] Preferably, the first motor is powered by a first storage battery, and the first storage battery is connected to a first power-supplying photovoltaic panel.

[0015] Preferably, a drive sprocket is coaxially fixed to the reel, a drive sprocket is installed in the lower middle part of the photovoltaic bracket, a drive chain is provided between the drive sprocket and the drive sprocket, and a turntable is coaxially fixed to the drive sprocket.

[0016] Preferably, the snowproof film traction component includes a second motor and a traction wheel driven by the second motor.

[0017] Preferably, the second motor is powered by a second battery, which is connected to a second photovoltaic panel.

[0018] Preferably, the photovoltaic power station snow removal device also includes a rain and snow sensor. When the rain and snow sensor detects snowfall, it sends a trigger signal to the second motor, thereby starting the second motor.

[0019] Preferably, the running track is provided with a rack, and the traction wheel is a gear that meshes with the rack.

[0020] Preferably, the upper longitudinal end of the running track is provided with an upwardly curved and raised section.

[0021] Preferably, the photovoltaic support includes a top truss and supporting columns, with crossbeams on the truss, and the photovoltaic module array and running track are both mounted on the crossbeams.

[0022] The present invention adopts the above technical solution and has the following beneficial effects:

[0023] 1. A snow removal solution using a snow-proof film is employed. During snowfall, the film covers the photovoltaic module array, isolating the snow from the modules. As snow accumulates on the film, it is rolled up during snow removal. This process allows the snow to gradually slide down the vertical direction of the photovoltaic module array, simplifying snow removal, saving time and labor, reducing costs, and facilitating snow removal for the power plant. This maintains the health of the photovoltaic modules in winter, reduces maintenance work, and increases the power plant's winter power generation efficiency. Furthermore, it eliminates the need for maintenance personnel to climb to heights for snow removal, avoiding the risks associated with manual snow removal.

[0024] The roll is installed at the top of the photovoltaic support and below the photovoltaic module array in the vertical direction. Since the installation position is relatively low to the photovoltaic module array, the snow-proof film will not cast a shadow on the module after it is rolled up.

[0025] Two longitudinal running tracks extending downwards are arranged side-by-side at the top of the photovoltaic support structure, corresponding to the lateral sides of the photovoltaic module array. Snow-proof film traction components are mounted on these tracks and connected to the moving ends of the snow-proof film. During film application, the snow-proof film traction components move from the lower longitudinal side to the upper longitudinal side of the running tracks, thereby releasing the snow-proof film from the roll and covering the photovoltaic module array. Therefore, the cooperation between the two running tracks and the corresponding two snow-proof film traction components ensures synchronous winding and unwinding of the snow-proof film.

[0026] 2. The reel is driven to rotate by the first motor and can be automatically wound up via remote control. Additionally, a first power supply photovoltaic panel and a first storage battery can be independently installed to integrate photovoltaic power generation and energy storage, meeting the power needs of the first motor. Alternatively, the photovoltaic power station can supply power to the first motor.

[0027] 3. To facilitate convenient manual operation of the roll, a drive sprocket is coaxially fixed to the roll, and a drive sprocket is installed in the lower middle part of the photovoltaic bracket. A drive chain connects the drive sprocket and the drive sprocket, and a turntable is coaxially fixed to the drive sprocket. The turntable is manually rotated, causing it to rotate synchronously with the drive sprocket. This rotation, via the drive chain, drives the drive sprocket and the roll, causing the roll to rewind the snowproof film for snow removal. Alternatively, when the snowproof film traction component moves from the lower longitudinal side to the upper longitudinal side of the running track to release the snowproof film from the roll, it can be coordinated with rotating the turntable in the opposite direction.

[0028] 4. The snow-proof film traction component includes a second motor and a traction wheel driven by the second motor. It can be remotely controlled to automatically operate, climbing upwards along a track to cover the photovoltaic module array with the snow-proof film. Additionally, a second power supply photovoltaic panel and a second battery can be independently installed to integrate photovoltaic power generation and energy storage, meeting the power needs of the second motor. Alternatively, the photovoltaic power station can supply power to the second motor.

[0029] 5. The photovoltaic power station's snow removal device also includes a rain and snow sensor. When the rain and snow sensor detects snowfall, it sends a trigger signal to the second motor, thereby starting the second motor. Therefore, no manual operation is required.

[0030] 6. Because the running track has a slope, in order to ensure that the snowproof film traction component can climb smoothly along the running track, the running track is equipped with a rack, and the traction wheel is a gear that meshes with the rack.

[0031] 7. Since the upper longitudinal end of the running track is provided with an upwardly curved and raised section, which is located above the photovoltaic module array in the longitudinal direction, the snow-proof film traction component can ensure that the snow-proof film fully covers the photovoltaic module array after it runs to the raised section.

[0032] 8. The top of the photovoltaic support is a truss structure. The advantage of the truss is that the members mainly bear tension or compression, which can make full use of the material, save materials, and reduce the weight of the structure.

[0033] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0034] The utility model will be further described below with reference to the accompanying drawings:

[0035] Figure 1 This is a schematic diagram of the structure of a photovoltaic power station film-coated snow removal device of the present invention when the snow-proof film is completely rolled up;

[0036] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0037] Figure 3 This is a schematic diagram of the structure of a photovoltaic power station snow removal device with a snow-proof film covering the photovoltaic module array when the snow-proof film completely covers the photovoltaic module array.

[0038] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0039] Figure 5 This is a top view of a photovoltaic power station snow removal device with a film coating according to the present invention;

[0040] Figure 6 A schematic diagram of a manually driven reel structure;

[0041] Reference numerals: 1. Photovoltaic module array; 2. Crossbeam; 3. Running track; 31. Elevated section; 4. Snowproof film traction component; 5. Second power supply photovoltaic panel; 6. Snowproof film; 7. Roller; 8. First motor; 9. First power supply photovoltaic panel; 10. Roller bracket; 10. Photovoltaic bracket; 11. Column; 12. Truss; 13. Elevated bracket; 14. Transmission sprocket; 15. Transmission chain; 16. Drive sprocket; 17. Turntable.

Detailed Implementation Methods

[0042] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0043] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0044] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "lateral," and "longitudinal," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] Example 1

[0047] Reference Figures 1 to 5As shown, this embodiment provides a photovoltaic power station snow removal device with a film covering. The photovoltaic power station includes a photovoltaic support 100 and a photovoltaic module array 1 mounted on the photovoltaic support. Typically, the photovoltaic module array 1 is inclined longitudinally. Here, the inclined direction of the photovoltaic module array 1 is defined as longitudinal (usually north-south, i.e., lower on the south side and higher on the north side, facing the direction of sunlight). This photovoltaic power station is equipped with a snow removal device with a film covering, which includes:

[0048] A spool 7 is installed on the top of the photovoltaic support and located longitudinally below the photovoltaic module array 1, for winding up the snow-proof film 6;

[0049] Snowproof film 6, which covers photovoltaic module array 1 before snowfall, is rolled up by roller 7 during snow removal, and allows snow to slide off the snowproof film;

[0050] The running track 3 has two running tracks 3 arranged side by side on the top of the photovoltaic support, extending longitudinally from top to bottom, and the two running tracks 3 are respectively arranged on the horizontal sides of the photovoltaic module array 1.

[0051] The snow-proof film traction component 4 is provided on two running tracks and connected to the moving end of the snow-proof film. When the film is covered, the snow-proof film traction component 4 moves from the lower longitudinal side to the upper longitudinal side of the running track to drive the snow-proof film 6 out of the roll 7 and cover the photovoltaic module array 1.

[0052] It is understood that the fixed position of the snow-proof film traction component and the moving end of the snow-proof film is higher than the surface of the photovoltaic module to ensure that the snow-proof film moves above the surface of the photovoltaic module array without contacting the surface of the photovoltaic module array. In addition, a traction rod can be fixed to the moving end of the snow-proof film, with both ends of the traction rod connected to the snow-proof film traction components on the lateral sides of the photovoltaic module array, and the snow-proof film traction components on both sides need to be synchronized.

[0053] In some embodiments, the reel 7 is driven to rotate by a first motor 8, and automatic winding can be achieved through remote control. The first motor 8 is powered by a first storage battery, which is connected to a first power-generating photovoltaic panel 9. This integrates photovoltaic power generation and energy storage to meet the power needs of the first motor; alternatively, the photovoltaic power station can also power the first motor.

[0054] In addition, the roller 7 is installed on the roller bracket 10, which is fixed to the lower longitudinal end of the top of the photovoltaic bracket. The roller, the first motor, and the first power-supplying photovoltaic panel are installed through the roller bracket.

[0055] In some embodiments, the snow-proof film traction component 4 includes a second motor and a traction wheel driven by the second motor. The component can be remotely controlled to operate automatically, climbing upwards along a track to cover the photovoltaic module array with the snow-proof film. The second motor is powered by a second battery, which is connected to the second power-supplying photovoltaic panel 5. This integrates photovoltaic power generation and energy storage, meeting the power needs of the second motor. Alternatively, the photovoltaic power station can also supply power to the second motor.

[0056] The first and second photovoltaic panels 9 and 5 do not need to be too large, because the first and second motors operate for very short periods and are not normally turned on. On sunny days, the photovoltaic panels absorb and store solar energy, and the energy storage system provides the power for mulching and snow removal operations, eliminating the need for an external power source.

[0057] Furthermore, the photovoltaic power station's snow removal device also includes a rain and snow sensor. This sensor can be installed on top of the photovoltaic support frame and communicates with the control system of the snow removal device. Mature products can be directly purchased from the market, and its installation position is offset from the photovoltaic module array coverage position. When the rain and snow sensor detects snowfall, it sends a trigger signal to the second motor, thereby starting the second motor and achieving automatic snow removal. It can also send a trigger signal to the first motor after the snowfall has stopped, thereby starting the first motor and performing automatic snow removal.

[0058] In this embodiment, the photovoltaic support 100 includes a top truss 12 and supporting columns 11. Additionally, diagonal braces are provided between the columns 11 and the truss 12 to enhance the overall strength of the photovoltaic support. A crossbeam 2 is provided on the truss 12, and the photovoltaic module array 1 is mounted on the crossbeam 2. Both ends of the crossbeam protrude laterally outward from the photovoltaic module array. The running track 3 is installed at the ends of the crossbeam and intersects it perpendicularly.

[0059] Furthermore, the upper longitudinal end of the running track 3 is provided with an upwardly curved and raised section 31, for example, curved in an arc or raised at an angle. The raised section is located above the photovoltaic module array in the longitudinal direction. After the snow-proof film traction component 4 runs to the raised section, it can ensure that the snow-proof film fully covers the photovoltaic module array. The raised section 31 is supported by a raised bracket 13, which is fixed to the truss 12.

[0060] Example 2

[0061] like Figure 6As shown, in order to facilitate the manual operation of the reel, a manual drive structure for the reel is provided. Specifically, the reel 7 can be coaxially fixed with a transmission sprocket 14, and a drive sprocket 16 is installed in the lower middle part of the photovoltaic bracket, which can be installed on the column 11. A transmission chain 15 is provided between the drive sprocket 16 and the transmission sprocket 14, and a turntable 17 is coaxially fixed to the drive sprocket.

[0062] The turntable is for manual operation. The turntable can be appropriately enlarged to reduce the force required for manual operation. The turntable is manually rotated, and its rotation is synchronized with the drive sprocket. Through a transmission chain, the drive sprocket and the roller rotate, causing the roller to roll up the snow-proof film for snow removal.

[0063] Understandably, when the snow film traction component moves from the lower longitudinal side to the upper longitudinal side of the running track to release the snow film from the roll, it can coordinate with the turntable rotating in the opposite direction. Thus, the snow film traction component requires relatively little power to move from the lower longitudinal side to the upper longitudinal side of the running track.

[0064] Example 3

[0065] Unlike Embodiment 1, the snowproof film traction component 4 includes a movable component connected to the snowproof film. The movable component moves along a running track, and a chain or timing belt is provided along the running track. The movable component is connected to the chain or timing belt, and the chain or timing belt has a running path consistent with the direction of the running track. Thus, the chain or timing belt can drive the movable component to move along the running track on the running path.

[0066] It is understandable that the snow protection film traction component can also be manually tractioned. For example, it includes a movable part connected to the snow protection film, which moves along the running track. A fixed pulley is set at the upper longitudinal end of the running track, and a traction rope is set to connect to the movable part through the fixed pulley. A person pulls the traction rope to drive the movable part to move along the running track.

[0067] Therefore, this utility model can realize snow removal by film covering, speed up the snow removal progress of power plants, and at the same time reduce the difficulty of operation and maintenance and reduce the risk to snow removal personnel.

[0068] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A photovoltaic power plant film-coated snow removal device, wherein the photovoltaic power plant comprises a photovoltaic support and an array of photovoltaic modules mounted to the photovoltaic support, characterized in that, The photovoltaic power station film covering and snow removing device comprises: a reel mounted on the top of the photovoltaic support and located below the longitudinal direction of the photovoltaic module array, for winding the snow prevention film; the snow prevention film covers the photovoltaic module array when it snows, is wound by the reel when the snow is removed, and makes the snow slide off the snow prevention film during the winding process; two running tracks are arranged side by side on the top of the photovoltaic support and extend in the longitudinal direction from top to bottom, and the two running tracks are arranged on the lateral sides of the photovoltaic module array correspondingly; a snow prevention film traction component is arranged on the two running tracks and connected with the moving end of the snow prevention film, and the snow prevention film traction component moves from the longitudinal lower side to the longitudinal upper side of the running track when the film is covered, so as to release the snow prevention film from the reel and cover the photovoltaic module array.

2. The photovoltaic power station film snow removal device according to claim 1, characterized in that, The reel is driven to rotate by the first motor.

3. The photovoltaic power station film snow removal device according to claim 2, characterized in that, The first motor is powered by the first storage battery, and the first storage battery is connected with the first energy supply photovoltaic panel.

4. The photovoltaic power station film snow removal device according to claim 1, characterized in that, The reel is coaxially fixed with a transmission sprocket, the middle and lower part of the photovoltaic support is mounted with a driving sprocket, a transmission chain is arranged between the driving sprocket and the transmission sprocket, and the driving sprocket is coaxially fixed with a rotating disc.

5. The photovoltaic power station film snow removal device according to claim 1, characterized in that, The snow prevention film traction component comprises a second motor and a traction wheel driven to rotate by the second motor.

6. The photovoltaic power station film snow removal device according to claim 5, characterized in that, The second motor is powered by the second storage battery, and the second storage battery is connected with the second energy supply photovoltaic panel.

7. The photovoltaic power station film snow removal device according to claim 5, characterized in that, The photovoltaic power station film covering and snow removing device further comprises a rain and snow sensor, and when the rain and snow sensor detects snow, a trigger signal is sent to the second motor, so that the second motor is started.

8. The photovoltaic power station film snow removal device according to claim 5, characterized in that, The running track is provided with a rack, and the traction wheel is a gear matched with the rack.

9. The photovoltaic power station film snow removal device according to claim 1, characterized in that, The longitudinal upper end of the running track is provided with a raised section which is curved and lifted upward.

10. The photovoltaic power station film snow removal device according to claim 1, characterized in that, The photovoltaic support comprises a truss on the top and a stand supporting the truss, the truss is provided with a cross beam, and the photovoltaic module array and the running track are mounted on the cross beam.

Images