Adjusting support, test platform and test method for photovoltaic module wind tunnel test

Abstract

The application provides an adjusting support for photovoltaic module wind tunnel test, a test platform and a test method, and belongs to the technical field of photovoltaic module wind tunnel test; the adjusting support comprises a frame body movable in the up-down direction, three support seats swingable up and down are arranged on the frame body in a horizontal and spaced manner, the middle support seat is fixedly connected with the frame body, and the two side support seats are slidable in the horizontal direction; three test samples are correspondingly and slidably arranged on the support surfaces of the support seats, the sliding direction is perpendicular to the swing axis of the support seat, and an expansion mechanism is arranged between each test sample and the corresponding support seat to drive the test sample to slide; the frame body is adjacent to a compensation assembly, when the support seat is lifted and swung to the position where the test sample is flush with the surface of the compensation assembly, the compensation assembly can fill the exposed area between the test sample and the compensation assembly to adjust the test surface. The adjusting support for photovoltaic module wind tunnel test, the test platform and the test method can adapt to the test requirements of photovoltaic modules of different specifications, and improve the test universality and result accuracy.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic module wind tunnel testing technology, and more specifically, relates to an adjustment bracket, test platform and test method for photovoltaic module wind tunnel testing. Background Technology

[0002] With the rapid development of the global new energy industry, the installed capacity of photovoltaic power plants continues to expand. The proportion of photovoltaic applications in special scenarios such as complex mountainous areas, high-wind-speed regions, and distributed rooftops is constantly increasing. The wind load resistance performance of photovoltaic modules and supports has become a core indicator affecting the long-term operational safety of power plants. Wind tunnel testing of photovoltaic modules is a crucial step in quantifying the wind resistance performance and stress distribution of photovoltaic modules by simulating wind loads under different operating conditions. The test data directly serves as the core basis for photovoltaic support design and power plant layout optimization.

[0003] Current photovoltaic module wind tunnel tests generally use fixed or single-dimensional adjustment brackets as test carriers. If it is necessary to test the working conditions of different array spacing and different module sizes, the brackets need to be manually disassembled and re-laid out and fixed, resulting in low adjustment efficiency, long test cycle and high cost. Moreover, the adjustment dimension is single, and it is impossible to achieve multi-parameter coordinated adjustment of height, pitch angle, array spacing, test area and incoming flow angle at the same time. It is difficult to reproduce the real flow field working conditions under complex scenarios, and the test data coverage is insufficient. Summary of the Invention

[0004] The purpose of this application is to provide an adjustment bracket, test platform and test method for wind tunnel testing of photovoltaic modules, so as to solve the technical problem that the existing wind tunnel testing schemes for photovoltaic modules have a single adjustment dimension.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A wind tunnel testing adjustment bracket for photovoltaic modules is provided, comprising: The frame is designed to be installed inside the wind tunnel and has the freedom to move vertically. Three support bases are arranged at intervals along the horizontal direction on the frame and have the freedom to pitch and swing in the vertical direction; the middle support base is fixedly connected to the frame, and the remaining two support bases are slidably connected to the frame along the horizontal direction. Three test templates are slidably mounted on the support surfaces of the three support bases, one-to-one, with the sliding direction of the test templates perpendicular to the swing axis of the support bases; each test template is provided with an extension mechanism between itself and its corresponding support base, the extension mechanism being used to drive the test template to slide a preset distance; and The compensation component is arranged adjacent to the frame. When the support base swings up and down until the surface of the test template is flush with the surface of the compensation component, the compensation component can fill the exposed area between the test template and the support base to change the test area size.

[0006] In one possible implementation, the compensation component includes: A storage rack, arranged adjacent to the frame body, has storage slots corresponding one-to-one with the three test specimens; when the frame body moves the support base vertically and the support base swings to a horizontal position, the three storage slots are adapted to be respectively aligned with the three test specimens; and Three sets of strip plates are respectively arranged in the three storage slots; each set of strip plates includes multiple strip plates arranged along its own width direction, each strip plate is slidably connected to the corresponding storage slot, and the sliding direction of the strip plate is parallel to the sliding direction of the test sample; each strip plate is provided with a magnetic element on the side facing the test sample and on the side facing the adjacent strip plate; Wherein, after the storage tank is aligned with the corresponding test template and the expansion mechanism moves the test template, the test template is adapted to move one or more strip plates synchronously onto the support base via the magnetic component; when the test template moves away from the storage tank, the strip plate on the support base is adapted to separate from the strip plate in the storage tank.

[0007] In one possible implementation, the support base includes: A connecting plate, fixedly or slidably connected to the frame; and A swing plate, hinged to the connecting plate, is capable of pitching up and down. The test sample is slidably connected to the side of the swing plate facing away from the connecting plate, and the extension mechanism is provided between the swing plate and the test sample. An angle adjustment mechanism is provided between the swing plate and the connecting plate, and the angle adjustment mechanism is used to drive the swing seat to rotate around the hinge axis to adjust the pitch angle of the swing plate.

[0008] In one possible implementation, the extended mechanism includes: A straight toothed groove is disposed on the side of the test specimen facing the swing plate, and the extending direction of the straight toothed groove is parallel to the sliding direction of the test specimen; and A drive gear is rotatably connected to the swing plate, the drive gear meshes with the linear tooth groove, and the drive gear is driven by a first motor.

[0009] In one possible implementation, the angle adjustment mechanism includes: A drive rack is rotatably connected to the connecting plate in a horizontal direction, and the drive rack is driven by a second motor; and Two arc-shaped racks are spaced apart on the side of the swing plate facing the connecting plate, and the arc-shaped racks are concentric with the hinge axis of the swing plate; one end of each arc-shaped rack is fixedly connected to the swing plate, and each arc-shaped rack meshes with the drive rack.

[0010] In one possible implementation, the connecting plate has a guide groove through which the arcuate rack slides.

[0011] In one possible implementation, a lateral movement mechanism is provided between the two side support seats and the frame. The lateral movement mechanism is used to drive the two side support seats to move synchronously toward or away from the middle support seat, so as to realize the spacing adjustment or splicing of the three support seats.

[0012] In one possible implementation, the lateral movement mechanism includes: A screw, rotatably connected to the frame in a horizontal direction, and the screw is driven by a third motor; and Two connecting sleeves are respectively disposed on the two connecting plates on the side, each connecting sleeve is threadedly connected to the screw, and the threads of the two connecting sleeves are opposite in direction.

[0013] In this embodiment of the application, when using the adjusting bracket for wind tunnel testing of the photovoltaic module: Before conducting wind tunnel tests on photovoltaic modules, the support base is first fixedly installed inside the wind tunnel test section.

[0014] First, based on the actual dimensions of the photovoltaic module to be simulated, the lifting height of the frame and the pitch angle of the support are adjusted synchronously. After the surface of the test sample is flush with the surface of the adjacent compensation module, the test sample is driven by the extension mechanism to slide a preset distance in a direction perpendicular to the swing axis of the support. The compensation module can automatically fill the exposed area between the test sample and the support, obtaining the required test area. The compensation module can eliminate the gap between the test sample and the support, preventing airflow from bypassing the gap and interfering with the test results during wind tunnel testing.

[0015] Then, according to the test requirements, first adjust the vertical height of the frame to the preset installation elevation. Next, according to the array spacing of the target photovoltaic modules, slide and adjust the support seats on both sides of the frame in the horizontal direction, and complete the horizontal spacing of the three together with the support seat fixed in the middle. Then adjust the pitch and swing angle of the three support seats to match the installation tilt angle of the photovoltaic modules to be simulated.

[0016] To simulate the wind conditions of a large-area continuous photovoltaic array, the two side supports can be adjusted to be fully connected with the central support.

[0017] After all parameters have been adjusted, wind tunnel tests can be conducted. Three test specimens will be used to replace the actual photovoltaic modules to withstand the airflow and obtain corresponding test data such as wind resistance and turbulence characteristics.

[0018] Compared with the prior art, the adjustable support for wind tunnel testing of photovoltaic modules provided in this application embodiment has multi-dimensional adjustment capabilities, including frame lifting, support seat pitch and horizontal sliding, and independent sliding of test specimens. This allows it to cover real installation scenarios of photovoltaic modules with different installation heights, different installation tilt angles, and different array arrangement gaps, and the wind tunnel test data obtained is more consistent with the stress characteristics of actual application scenarios.

[0019] With the filling design of the compensation component, the size of the test area can be flexibly adjusted without replacing the bracket or test template, adapting to the testing needs of photovoltaic modules of different sizes and arrays of different scales, effectively reducing testing costs while improving testing efficiency.

[0020] The three support bases are arranged with the center fixed and the sides sliding, which makes the overall structure more stable and reduces the interference of support deformation on the test results during wind tunnel testing, ensuring the accuracy of the test data. At the same time, the support can not only complete the wind load characteristics test of a single photovoltaic module, but also simulate the overall wind effect of a continuous array of multiple photovoltaic modules, making it more applicable to a wider range of scenarios and providing more comprehensive test basis for the wind-resistant structural design of photovoltaic modules.

[0021] The technical solution adopted in this application also provides a test platform, including the adjustment bracket for wind tunnel testing of photovoltaic modules proposed in any of the foregoing.

[0022] The beneficial effects of the test platform provided in this embodiment are the same as those of the aforementioned adjustment bracket for wind tunnel testing of photovoltaic modules, and will not be repeated here.

[0023] The technical solution adopted in this application also provides a test method, based on the test platform described above, including the following steps: Step A: Use the test template as an equivalent test carrier for the photovoltaic module under test, and install wind pressure test sensors at preset points on each test template; Step B: Raise and swing the support base until the surface of the test template is flush with the surface of the compensation component; according to the actual size and specifications of the photovoltaic module under test, drive the test template to slide through the expansion mechanism to adjust the test area to match the photovoltaic module under test; fill the exposed area between the test template and the support base through the compensation component; Step C: Based on the actual installation height parameters of the photovoltaic module under test, adjust the support base to the target test height consistent with the actual working conditions using the frame; Step D: Adjust the pitch angle of the support base according to the actual installation tilt angle parameters of the photovoltaic module under test, so as to adjust the pitch angle of the test sample to match the actual working conditions; Step E: According to the actual array layout requirements of the photovoltaic module under test, control the two side supports to move synchronously toward or away from the middle support to complete the spacing adjustment or splicing of the three supports, simulating the gap layout or dense layout of the actual photovoltaic array. Step F: Set the flow field parameters in the wind tunnel according to the test requirements, drive the rotating disk to rotate through the rotating drive component, and adjust the relative angle between all the photovoltaic module wind tunnel test adjustment brackets and the wind tunnel inflow direction; Step G: After completing the current working condition test, repeat the parameter adjustment operations from Step B to Step F according to the test plan until all preset test items are completed.

[0024] The beneficial effects of the experimental method provided in this embodiment are the same as those of the aforementioned experimental platform, and will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A three-dimensional structural diagram of the test platform provided in the embodiments of the present invention. Figure 1 ; Figure 2 A three-dimensional structural diagram of the test platform provided in the embodiments of the present invention. Figure 2 ; Figure 3 A three-dimensional structural diagram of the test platform provided in the embodiments of the present invention. Figure 3 ; Figure 4 A three-dimensional structural diagram of the adjustment bracket for wind tunnel testing of photovoltaic modules provided in an embodiment of the present invention. Figure 1 ; Figure 5 A three-dimensional structural diagram of the adjustment bracket for wind tunnel testing of photovoltaic modules provided in an embodiment of the present invention. Figure 2 ; Figure 6A three-dimensional structural diagram of the adjustment bracket for wind tunnel testing of photovoltaic modules provided in an embodiment of the present invention. Figure 3 ; Figure 7 A three-dimensional structural diagram of the adjustment bracket for wind tunnel testing of photovoltaic modules provided in an embodiment of the present invention. Figure 4 ; Figure 8 for Figure 7 Enlarged structural diagram of region A in the middle; The following are the labeling elements in the figure: 1. Frame; 2. Support base; 21. Connecting plate; 211. Guide groove; 22. Swing plate; 3. Test template; 4. Compensation component; 41. Storage rack; 411. Storage groove; 42. Strip plate; 43. Magnetic component; 5. Extension mechanism; 51. Linear toothed groove; 52. Drive gear; 53. First motor; 6. Angle adjustment mechanism; 61. Drive rack; 62. Arc rack; 63. Second motor; 7. Lateral movement mechanism; 71. Screw; 72. Connecting sleeve; 73. Third motor; 8. Rotating disk; 81. Mounting groove; 9. Wind tunnel. Detailed Implementation

[0027] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Please refer to the following: Figures 1 to 8 The adjustment bracket, test platform, and test method for photovoltaic module wind tunnel testing provided in this application are described below. The adjustment bracket for photovoltaic module wind tunnel testing includes a frame 1, three support bases 2, three test templates 3, and a compensation component 4.

[0032] The frame 1 is used to be installed inside the wind tunnel 9 and has the freedom to move in the vertical direction; the frame 1 is equipped with a lifting cylinder or lifting electric cylinder at the bottom to drive the frame 1 to move in the vertical direction.

[0033] Three support bases 2 are arranged horizontally at intervals on the frame 1 and have the freedom to pitch and swing in the vertical direction; the middle support base 2 is fixedly connected to the frame 1, and the remaining two support bases 2 are slidably connected to the frame 1 in the horizontal direction.

[0034] Three test specimens 3 are slidably set on the support surfaces of three support seats 2, and the sliding direction of the test specimens 3 is perpendicular to the swing axis of the support seats 2; an extension mechanism 5 is provided between the test specimens 3 and the corresponding support seats 2, and the extension mechanism 5 is used to drive the test specimens 3 to slide a preset distance.

[0035] The compensation component 4 is arranged adjacent to the frame 1.

[0036] When the support base 2 swings up and down until the surface of the test template 3 is flush with the surface of the compensation component 4, the compensation component 4 can fill the exposed area between the test template 3 and the support base 2 to change the test area size.

[0037] The three-point reference structure, consisting of a fixed central support 2 and a sliding side support 2, integrates the adjustment capabilities of three dimensions: lifting of the frame 1, pitch of the support 2, and lateral movement of the test template 3. Combined with the gap filling function of the compensation component 4, it achieves stepless adjustment of the test area. At the same time, the sliding capability of the side support 2 can realistically simulate the array gap / dense layout of a photovoltaic power station, restoring the aerodynamic interference effect under actual working conditions.

[0038] A high-precision displacement sensor can be installed on the frame 1 to provide real-time feedback on the height of the frame 1 and the displacement of the side support 2; or a quick-release buckle structure can be added to the surface of the test template 3 to directly fix the real photovoltaic module to replace the equivalent test template 3, further improving the authenticity of the test; the compensation component 4 can also be upgraded to an independent electric push structure, eliminating the dependence on the transmission of the test template 3, and adapting to the amplitude adjustment requirements of ultra-large photovoltaic modules of 2m or more.

[0039] In this embodiment of the application, when using the adjusting bracket for wind tunnel testing of the photovoltaic module: Before conducting wind tunnel 9 tests on photovoltaic modules, the support base 2 is first fixedly installed inside the wind tunnel test section of wind tunnel 9.

[0040] First, based on the actual dimensions of the photovoltaic module to be simulated, the lifting height of the frame 1 and the pitch angle of the support base 2 are adjusted synchronously. After the surface of the test template 3 is flush with the surface of the adjacent compensation component 4, the test template 3 is driven by the extension mechanism 5 to slide a preset distance in a direction perpendicular to the swing axis of the support base 2. The compensation component 4 can automatically fill the exposed area between the test template 3 and the support base 2 to obtain the required test area. The compensation component 4 can eliminate the gap between the test template 3 and the support base 2, preventing airflow from bypassing the gap and interfering with the test results during the wind tunnel 9 test.

[0041] Then, according to the test requirements, first adjust the vertical height of the frame 1 to the preset installation elevation. Next, according to the array spacing of the target photovoltaic modules, slide and adjust the support seats 2 on both sides of the frame 1 in the horizontal direction. Together with the support seat 2 fixed in the middle, complete the setting of the horizontal spacing of the three. Then adjust the pitch swing angle of the three support seats 2 to match the installation tilt angle of the photovoltaic modules to be simulated.

[0042] To simulate the wind conditions of a large-area continuous photovoltaic array, the two side supports 2 can be adjusted to be fully connected with the middle support 2.

[0043] After all parameters have been adjusted, wind tunnel 9 testing can be carried out. Three test specimens 3 will replace the actual photovoltaic modules to withstand the airflow and obtain corresponding test data such as wind resistance and turbulence characteristics.

[0044] Compared with the prior art, the adjustable bracket for wind tunnel testing of photovoltaic modules provided in this application embodiment has a multi-dimensional adjustment capability through the lifting and lowering of the frame 1, the pitching and horizontal sliding of the support seat 2, and the independent sliding of the test sample 3. It can cover real installation scenarios of photovoltaic modules with different installation heights, different installation tilt angles, and different array arrangement gaps, and the obtained wind tunnel 9 test data is more in line with the stress characteristics of actual application scenarios.

[0045] With the filling design of the compensation component 4, the size of the test area can be flexibly adjusted without replacing the bracket or test template 3, adapting to the testing needs of photovoltaic modules of different sizes and arrays of different scales, effectively reducing testing costs while improving testing efficiency.

[0046] The three support bases 2 are arranged with the center fixed and the sides sliding, which makes the overall structure more stable and reduces the interference of support deformation on the test results during the wind tunnel 9 test, ensuring the accuracy of the test data. At the same time, the support can not only complete the wind load characteristics test of a single photovoltaic module, but also simulate the overall wind effect of a continuous array of multiple photovoltaic modules, making it more applicable to a wider range of scenarios and providing more comprehensive test basis for the wind-resistant structural design of photovoltaic modules.

[0047] Further, please refer to Figures 1 to 8 As a specific embodiment of the adjustment bracket for wind tunnel testing of photovoltaic modules provided by the present invention, the compensation component 4 includes a storage rack 41 and three strip plates 42.

[0048] The storage rack 41 is arranged adjacent to the frame 1 and has storage slots 411 that correspond one-to-one with the three test samples 3. When the frame 1 moves the support 2 vertically and the support 2 swings to a horizontal position, the three storage slots 411 are adapted to be aligned with the three test samples 3 respectively.

[0049] Three sets of strip plates 42 are respectively arranged in three storage slots 411; each set of strip plates 42 includes multiple strip plates 42 arranged along its own width direction, each strip plate 42 is slidably connected to the corresponding storage slot 411, and the sliding direction of the strip plate 42 is parallel to the sliding direction of the test sample 3; each strip plate 42 is provided with a magnetic element 43 on the side facing the test sample 3 and on the side facing the adjacent strip plate 42.

[0050] Wherein, after the storage tank 411 is aligned with the corresponding test sample 3 and the expansion mechanism 5 moves the test sample 3, the test sample 3 is adapted to move one or more strip plates 42 synchronously to the support base 2 through the magnetic component 43; when the test sample 3 is far away from the storage tank 411, the strip plates 42 on the support base 2 are adapted to separate from the strip plates 42 in the storage tank 411.

[0051] In use, first adjust the height of the frame 1 and the pitch angle of the support base 2 so that the test sample 3 is aligned with the corresponding storage slot 411 on the storage rack 41; the expansion mechanism 5 moves the test sample 3 toward the storage slot 411 and attracts the corresponding number of strip plates 42 through the magnetic part 43 at the end; then the test sample 3 moves in the opposite direction, causing the attracted strip plates 42 to detach from the storage slot 411 and be laid flat in the empty area of ​​the support base 2, while the strip plates 42 that are not attracted remain in the storage slot 411, thus completing the expansion and filling of the test area.

[0052] The modular strip plate 42 and the magnetic splicing non-powered drive scheme are adopted. The moving traction force of the test sample 3 drives the strip plate 42 to combine. The strip plate 42 is seamlessly spliced ​​with each other and with the test sample 3 through magnetic parts 43. No additional independent drive structure is required. The number of filling strip plates 42 can be automatically matched according to the test area requirements.

[0053] The permanent magnet can be replaced with an electromagnetic chuck. After the test is completed, the adsorption can be quickly released by powering off, and the strip plate 42 can be automatically reset to the storage tank 411, improving the testing efficiency. A miniature wind pressure sensor can also be installed on the surface of the strip plate 42 to collect wind load distribution data at different positions of the width. Alternatively, an auxiliary electric push rod can be installed on the storage tank 411 to actively push and connect when the required number of strip plates 42 exceeds 5, reducing the transmission load of large-size width adjustment.

[0054] By adopting the above technical solutions, the modular design can achieve millimeter-level stepless filling of the test area, avoid turbulence interference when the flow field passes through, and improve the accuracy of test data; moreover, the structure is simple and reliable, without additional complex transmission components, which reduces the equipment failure rate.

[0055] Further, please refer to Figures 1 to 8 As a specific embodiment of the adjustment bracket for wind tunnel testing of photovoltaic modules provided by the present invention, the support base 2 includes a connecting plate 21 and a swing plate 22.

[0056] If the connecting plate 21 is in the middle, the connecting plate 21 is fixedly installed on the frame 1; if the connecting plate 21 is on the side, the connecting plate 21 is slidably connected to the frame 1.

[0057] The swing plate 22 is hinged to the connecting plate 21 and can swing up and down in the vertical direction; the test sample 3 is slidably connected to the side of the swing plate 22 facing away from the connecting plate 21, and an extension mechanism 5 is provided between the swing plate 22 and the test sample 3; an angle adjustment mechanism 6 is provided between the swing plate 22 and the connecting plate 21, and the angle adjustment mechanism 6 is used to drive the swing seat to rotate around the hinge axis to adjust the pitch angle of the swing plate 22.

[0058] The connecting plate 21 is fixedly or slidably connected to the frame 1. The angle adjustment mechanism 6 drives the swing plate 22 to rotate around the hinge axis and locks it after adjusting to the target pitch angle. The extension mechanism 5 drives the test sample 3 to slide on the surface of the swing plate 22 to complete the adjustment of the test area.

[0059] The structure employs a cooperative structure of connecting plate 21 and hinged swing plate 22. Connecting plate 21 is responsible for connecting to frame 1 and lateral sliding, while swing plate 22 is responsible for bearing test specimen 3 and adjusting pitch angle. The movements of the two modules do not interfere with each other, achieving a balance between structural rigidity and adjustment flexibility.

[0060] An angle encoder can be installed at the hinge shaft to provide real-time feedback on the pitch angle of the swing plate 22, adapting to the dynamic testing requirements of continuous angle changes; a pneumatic locking structure can also be installed between the swing plate 22 and the connecting plate 21 to automatically lock after the angle adjustment is completed, preventing angle deviation during testing in strong winds of level 12 or above; or the connecting plate 21 can be designed as a quick-release structure, allowing for quick replacement of support seats 2 with different load-bearing capacities, adapting to the different testing requirements of thin and light components and double-sided double-glass components.

[0061] By adopting the above technical solutions, the pitch angle adjustment can adapt to the testing needs of all photovoltaic installation scenarios, such as flat roofs, pitched roofs, and inclined single-axis tracking brackets; the functional collaboration design reduces the later maintenance cost, and a single damaged module can be replaced individually, improving maintenance efficiency.

[0062] Further, please refer to Figures 1 to 8 As a specific embodiment of the adjustment bracket for wind tunnel testing of photovoltaic modules provided by the present invention, the extension mechanism 5 includes a linear toothed groove 51 and a drive gear 52.

[0063] The straight toothed groove 51 is set on the side of the test sample 3 facing the swing plate 22, and the extension direction of the straight toothed groove 51 is parallel to the sliding direction of the test sample 3.

[0064] The drive gear 52 is rotatably connected to the swing plate 22, the drive gear 52 meshes with the linear tooth groove 51, and the drive gear 52 is connected to the first motor 53.

[0065] The first motor 53 drives the drive gear 52 to rotate. The drive gear 52 meshes with the straight toothed groove 51 on the back of the test sample 3, causing the test sample 3 to slide along the set direction. After reaching the preset position, the motor locks, completing the width adjustment.

[0066] The gear and tooth meshing transmission scheme has high transmission accuracy and strong load capacity, and can withstand the wind pressure load during the wind tunnel 9 test without slippage or deviation.

[0067] The linear toothed groove 51 can be replaced with a ball screw structure to improve transmission efficiency and reduce operating noise, making it suitable for batch testing scenarios with frequent width adjustments. A torque sensor can also be added to the drive gear 52, so that the torque automatically stops when the test sample 3 is connected to the strip plate 42 and the torque reaches the threshold, avoiding overload damage to the components. Alternatively, a symmetrical arrangement of dual drive gears 52 can be adopted to improve the transmission stability of large-size test samples 3 of more than 2m.

[0068] By adopting the above technical solutions, the accuracy of amplitude adjustment has been improved, fully meeting the accuracy requirements of wind tunnel 9 testing; the transmission structure has strong wind load resistance, reducing displacement deviation during the testing process, and significantly improving the reliability of test data.

[0069] Further, please refer to Figures 1 to 8 As a specific embodiment of the adjustment bracket for wind tunnel testing of photovoltaic modules provided by the present invention, the angle adjustment mechanism 6 includes a drive rack 61 and two arc-shaped racks 62.

[0070] The drive rack 61 is rotatably connected to the connecting plate 21 in the horizontal direction, and the drive rack 61 is connected to the second motor 63.

[0071] Two arc-shaped racks 62 are spaced apart on the side of the swing plate 22 facing the connecting plate 21, and the arc-shaped racks 62 are concentric with the hinge axis of the swing plate 22; one end of each arc-shaped rack 62 is fixedly connected to the swing plate 22, and each arc-shaped rack 62 meshes with the drive rack 61.

[0072] The second motor 63 drives the horizontally arranged drive rack 61 to rotate. The drive rack 61 meshes with two symmetrically arranged arc-shaped racks 62, causing the swing plate 22 to rotate synchronously around the hinge axis and adjust to the target pitch angle.

[0073] The symmetrical transmission scheme of horizontal drive rack 61 and concentric arc rack 62 is adopted. The two arc racks 62 are arranged concentrically with the hinge axis of swing plate 22, so the force is uniform and there will be no torsional deviation of swing plate 22 caused by unilateral force. The linearity of angle adjustment is good.

[0074] The drive rack 61 can be replaced with a worm gear structure, which has reverse self-locking capability and can maintain angle stability without additional locking structure, simplifying the overall structure; high-precision angle scales can also be marked on the surface of the arc rack 62 for easy manual calibration; or a symmetrical drive structure with dual motors and dual racks can be adopted to improve the angle adjustment capability when testing large-size and heavy components.

[0075] By adopting the above technical solution, the angle adjustment process is uniformly stressed and can withstand the torsional torque under a strong wind of level 12; the adjustment process is smooth and without jamming, which is suitable for wind vibration test scenarios of tracking brackets with dynamic angle changes.

[0076] Further, please refer to Figures 1 to 8 As a specific embodiment of the adjustment bracket for wind tunnel testing of photovoltaic modules provided by the present invention, the connecting plate 21 has a guide groove 211 through which the arc-shaped rack 62 slides.

[0077] When the arc-shaped rack 62 moves under the drive of the drive rack 61, it can slide along the guide groove 211 on the connecting plate 21. The guide groove 211 restricts the radial displacement of the arc-shaped rack 62 to avoid tooth loss or deformation.

[0078] The guide groove 211 serves a dual function of support and guidance, constraining the movement trajectory of the arc-shaped rack 62, offsetting the radial force on the arc-shaped rack 62 under wind load, and improving the overall rigidity of the mechanism.

[0079] A travel limit switch can be installed at both ends of the guide groove 211. When the swing plate 22 is adjusted to the maximum or minimum angle, the drive will stop automatically to avoid damage to the structure due to overtravel.

[0080] By adopting the above technical solution, the structural stability of the angle adjustment mechanism 6 is greatly improved, and the adjustment accuracy can still be maintained after long-term use.

[0081] Further, please refer to Figures 1 to 8 As a specific embodiment of the photovoltaic module wind tunnel test adjustment bracket provided by the present invention, a transverse movement mechanism 7 is provided between the two side support seats 2 and the frame body 1. The transverse movement mechanism 7 is used to drive the two side support seats 2 to move synchronously toward or away from the middle support seat 2, so as to realize the spacing adjustment or splicing of the three support seats 2.

[0082] The transverse mechanism 7 drives the two side support seats 2 to move synchronously toward or away from the middle support seat 2, adjusting the spacing of the three support seats 2 to simulate the gap layout or dense layout of the photovoltaic array.

[0083] The scheme of synchronous transmission of the two side support seats 2 is adopted to ensure that the distance between the two side support seats 2 and the middle support seat 2 is always equal. The symmetry of the array arrangement conforms to the design law of actual photovoltaic power station and restores the real array aerodynamic interference effect.

[0084] By adopting the above technical solution, arbitrary array spacing can be simulated to test the wind load interference effect of photovoltaic modules under different arrangements. This solves the pain point that traditional testing can only test a single module and cannot obtain array effect parameters, and greatly improves the engineering guidance value of the test data.

[0085] Further, please refer to Figures 1 to 8 As a specific embodiment of the adjusting bracket for wind tunnel testing of photovoltaic modules provided by the present invention, the transverse movement mechanism 7 includes a screw 71 and two connecting sleeves 72.

[0086] The screw 71 is rotatably connected to the frame 1 in the horizontal direction, and the screw 71 is connected to the third motor 73.

[0087] Two connecting sleeves 72 are respectively disposed on two connecting plates 21 on the side. Each connecting sleeve 72 is threadedly connected to the screw 71, and the threads of the two connecting sleeves 72 are opposite.

[0088] The third motor 73 drives the screw 71 to rotate, and the two connecting sleeves 72 with opposite thread directions drive the connecting plates 21 on both sides to move synchronously in opposite directions, so as to realize the synchronous approach or distance of the support seats 2 on both sides.

[0089] The reverse double-threaded screw 71 transmission scheme requires only one motor to achieve synchronous movement of the two support seats 2, without the need for an additional synchronous control structure. It has good synchronization and a simple and reliable structure.

[0090] The screw 71 can be replaced with a synchronous belt drive structure, which is suitable for batch testing scenarios that require frequent adjustment of array spacing; a rotary encoder can also be added to the screw 71 to calculate the displacement of the support 2 by rotating the angle, thereby further improving the adjustment accuracy.

[0091] By adopting the above technical solution, structural costs can be reduced, synchronization errors are smaller, maintenance is convenient, and it is suitable for large-scale promotion and application.

[0092] The technical solution adopted in this application also provides an experimental platform, please refer to [link / reference needed]. Figures 1 to 3 It includes a rotating disk 8 and multiple adjustment brackets for wind tunnel testing.

[0093] The rotating disk 8 is rotatably connected to the wind tunnel 9, and its transmission is connected to a rotating drive component; the upper end face of the rotating disk 8 is provided with a mounting groove 81.

[0094] Multiple adjustment brackets for wind tunnel testing of photovoltaic modules mentioned above are provided, and an array of multiple adjustment brackets for wind tunnel testing of photovoltaic modules is set in the mounting slot 81.

[0095] Multiple adjustment brackets are arranged and fixed in the mounting slot 81 of the rotating disk 8 according to a preset array. The rotating drive unit drives the rotating disk 8 to rotate, adjusting the relative angle between all brackets and the incoming flow direction of the wind tunnel 9 to simulate wind load conditions of different wind directions.

[0096] The system adopts a combined architecture of rotating disk 8 and array support. The rotation of rotating disk 8 enables the simulation of arbitrary wind direction without adjusting the incoming flow direction of wind tunnel 9. At the same time, the array-arranged support can simulate the overall flow field effect of a large-scale photovoltaic power station.

[0097] This test platform can perform full-condition testing in any wind direction, and can also simulate the overall wind load effect of photovoltaic power plants with a scale of 10MW or more. The test data can be directly used for the overall structural design of photovoltaic power plants, which can significantly shorten the project design cycle.

[0098] The technical solution adopted in this application also provides a test method, based on the aforementioned test platform, including the following steps: Step A: Use test sample 3 as the equivalent test carrier for the photovoltaic module under test, and install wind pressure test sensors at preset points on each test sample 3.

[0099] Step B: Raise and swing the support base 2 until the surface of the test template 3 is flush with the surface of the compensation component 4; according to the actual size and specifications of the photovoltaic module to be tested, drive the test template 3 to slide through the extension mechanism 5 to adjust the test area size to match the photovoltaic module to be tested; fill the exposed area between the test template 3 and the support base 2 through the compensation component 4.

[0100] Step C: Based on the actual installation height parameters of the photovoltaic module to be tested, adjust the support base 2 to the target test height consistent with the actual working conditions using the frame 1.

[0101] Step D: Adjust the pitch angle of the support 2 according to the actual installation tilt angle parameters of the photovoltaic module under test, so as to adjust the pitch angle of the test sample 3 to match the actual working conditions.

[0102] Step E: According to the actual array layout requirements of the photovoltaic module under test, control the two side support seats 2 to move synchronously toward or away from the middle support seat 2 to complete the spacing adjustment or splicing of the three support seats 2, simulating the gap layout or dense layout of the actual photovoltaic array.

[0103] Step F: Set the flow field parameters in wind tunnel 9 according to the test requirements, and drive the rotating disk 8 to rotate by rotating the drive component, and adjust the relative angle between the adjustment brackets for all photovoltaic modules in the wind tunnel test and the incoming flow direction of wind tunnel 9.

[0104] Step G: After completing the current working condition test, repeat the parameter adjustment operations from Step B to Step F according to the test plan until all preset test items are completed.

[0105] All adjustment mechanisms and sensors can be connected to the central control system to achieve full automation of the testing process. All working conditions can be tested and data collected automatically without manual intervention. Environmental parameters such as temperature, humidity, and snow load can also be simulated to achieve wind load testing under multiple environmental coupling.

[0106] This experimental method establishes a standardized process covering full-condition wind load simulation of photovoltaic modules, achieving comprehensive matching of test parameters with actual engineering scenarios. It addresses the common industry problems of insufficient simulation of operating conditions and disconnect between test results and practical applications in traditional wind tunnel testing. This method integrates multi-dimensional adjustments such as test width, height, tilt angle, array layout, and wind direction into a continuously executable standardized procedure. It eliminates the need to change tooling or adjust the main structure of the test platform during testing, effectively simplifying the testing process, reducing the operational complexity of multi-condition testing, avoiding variable interference caused by switching between different tooling, and ensuring the consistency of baseline conditions during testing.

[0107] Meanwhile, the testing process is highly reproducible, allowing for horizontal comparison of results from different testing entities and batches. This provides precise verification support for the structural optimization of individual photovoltaic products and a unified evaluation path for horizontal benchmarking of wind load performance across different types of photovoltaic installation schemes, contributing to the standardization and normalization of the photovoltaic wind load testing and evaluation system. Furthermore, this method has strong scenario adaptability. Whether it's various fixed installation scenarios, dynamic angle-changing scenarios such as tracking brackets, or large-scale array layout scenarios in centralized power plants, operating condition simulation can be achieved through parameter adjustments in the corresponding steps, providing a universal testing path for wind load performance research in various photovoltaic application scenarios.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable support for wind tunnel testing of photovoltaic modules, characterized in that, include: The frame (1) is used to be installed inside the wind tunnel (9) and has the freedom to move in the vertical direction; Three support seats (2) are arranged at intervals along the horizontal direction on the frame (1) and have the freedom to pitch and swing in the vertical direction; the middle support seat (2) is fixedly connected to the frame (1), and the remaining two support seats (2) are slidably connected to the frame (1) in the horizontal direction. Three test templates (3) are slidably mounted on the support surfaces of the three support seats (2), and the sliding direction of the test templates (3) is perpendicular to the swing axis of the support seats (2); each test template (3) and its corresponding support seat (2) is provided with an extension mechanism (5), which is used to drive the test templates (3) to slide a preset distance; and The compensation component (4) is arranged adjacent to the frame (1); When the support base (2) swings up and down until the surface of the test template (3) is flush with the surface of the compensation component (4), the compensation component (4) can fill the exposed area between the test template (3) and the support base (2) to change the test area size.

2. The adjusting bracket for wind tunnel testing of photovoltaic modules as described in claim 1, characterized in that, The compensation component (4) includes: A storage rack (41) is arranged adjacent to the frame (1) and has storage slots (411) corresponding one-to-one with the three test specimens (3); when the frame (1) moves the support (2) vertically and the support (2) swings to a horizontal position, the three storage slots (411) are adapted to be aligned with the three test specimens (3) respectively; and Three sets of strip plates (42) are respectively arranged in the three storage slots (411); each set of strip plates (42) includes multiple strip plates (42) arranged along its own width direction, each strip plate (42) is slidably connected to the corresponding storage slot (411), and the sliding direction of the strip plate (42) is parallel to the sliding direction of the test sample (3); each strip plate (42) is provided with a magnetic element (43) on the side facing the test sample (3) and on the side facing the adjacent strip plate (42); Wherein, after the storage tank (411) is aligned with the corresponding test template (3) and the expansion mechanism (5) moves the test template (3), the test template (3) is adapted to move one or more strip plates (42) synchronously onto the support base (2) via the magnetic component (43); when the test template (3) moves away from the storage tank (411), the strip plate (42) on the support base (2) is adapted to separate from the strip plate (42) in the storage tank (411).

3. The adjusting bracket for wind tunnel testing of photovoltaic modules as described in claim 1, characterized in that, The support base (2) includes: Connecting plate (21), fixedly or slidably connected to the frame (1); and A swing plate (22) is hinged to the connecting plate (21) and can swing up and down in the vertical direction; the test sample (3) is slidably connected to the side of the swing plate (22) facing away from the connecting plate (21), and the extension mechanism (5) is provided between the swing plate (22) and the test sample (3); an angle adjustment mechanism (6) is provided between the swing plate (22) and the connecting plate (21), and the angle adjustment mechanism (6) is used to drive the swing seat to rotate around the hinge axis to adjust the pitch angle of the swing plate (22).

4. The adjusting bracket for wind tunnel testing of photovoltaic modules as described in claim 3, characterized in that, The extended mechanism (5) includes: A straight toothed groove (51) is provided on the side of the test template (3) facing the swing plate (22), and the extending direction of the straight toothed groove (51) is parallel to the sliding direction of the test template (3); and A drive gear (52) is rotatably connected to the swing plate (22). The drive gear (52) meshes with the linear tooth groove (51), and the drive gear (52) is connected to a first motor (53).

5. The adjusting bracket for wind tunnel testing of photovoltaic modules as described in claim 3, characterized in that, The angle adjustment mechanism (6) includes: A drive rack (61) is rotatably connected to the connecting plate (21) in the horizontal direction, and the drive rack (61) is driven by a second motor (63); and Two arc-shaped racks (62) are spaced apart on the side of the swing plate (22) facing the connecting plate (21), and the arc-shaped racks (62) are concentrically arranged with the hinge axis of the swing plate (22); one end of each arc-shaped rack (62) is fixedly connected to the swing plate (22), and each arc-shaped rack (62) meshes with the drive rack (61).

6. The adjusting bracket for wind tunnel testing of photovoltaic modules as described in claim 5, characterized in that, The connecting plate (21) has a guide groove (211) through which the arc-shaped rack (62) slides.

7. The adjusting bracket for wind tunnel testing of photovoltaic modules as described in claim 3, characterized in that, A transverse mechanism (7) is provided between the two side support seats (2) and the frame (1). The transverse mechanism (7) is used to drive the two side support seats (2) to move synchronously toward or away from the middle support seat (2) so as to realize the spacing adjustment or splicing of the three support seats (2).

8. The adjusting bracket for wind tunnel testing of photovoltaic modules as described in claim 7, characterized in that, The lateral movement mechanism (7) includes: A screw (71) is rotatably connected to the frame (1) in a horizontal direction, and the screw (71) is driven by a third motor (73); and Two connecting sleeves (72) are respectively disposed on the two connecting plates (21) on the side. Each connecting sleeve (72) is threadedly connected to the screw (71), and the threads of the two connecting sleeves (72) are opposite.

9. An experimental platform, characterized in that, include: A rotating disk (8) is rotatably connected to a wind tunnel (9), and its transmission is connected to a rotating drive component; the upper end face of the rotating disk (8) is provided with a mounting groove (81); and Multiple adjustment brackets for wind tunnel testing of photovoltaic modules according to any one of the preceding claims 1-8, and an array of multiple adjustment brackets for wind tunnel testing of photovoltaic modules is arranged in the mounting groove (81).

10. A test method, based on the test platform described in claim 9, characterized in that, Includes the following steps: Step A: Use the test template (3) as the equivalent test carrier for the photovoltaic module under test, and install wind pressure test sensors at preset points on each of the test templates (3); Step B: Raise and swing the support base (2) until the surface of the test template (3) is flush with the surface of the compensation component (4); according to the actual size and specifications of the photovoltaic module under test, drive the test template (3) to slide through the extension mechanism (5) to adjust the test area to match the photovoltaic module under test; fill the exposed area between the test template (3) and the support base (2) through the compensation component (4); Step C: Based on the actual installation height parameters of the photovoltaic module under test, adjust the support base (2) to the target test height consistent with the actual working conditions using the frame (1); Step D: Adjust the pitch angle of the support base (2) according to the actual installation tilt angle parameters of the photovoltaic module under test, so as to adjust the pitch angle of the test template (3) to match the actual working conditions; Step E: According to the actual array arrangement requirements of the photovoltaic module under test, control the two side support seats (2) to move synchronously toward or away from the middle support seat (2) to complete the spacing adjustment or splicing of the three support seats (2) to simulate the gap layout or dense layout of the actual photovoltaic array. Step F: Set the flow field parameters in the wind tunnel (9) according to the test requirements, drive the rotating disk (8) to rotate through the rotating drive component, and adjust the relative angle between all the photovoltaic module wind tunnel test adjustment brackets and the incoming flow direction of the wind tunnel (9); Step G: After completing the current working condition test, repeat the parameter adjustment operations from Step B to Step F according to the test plan until all preset test items are completed.

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