Drainage device for photovoltaic power generation panel

Abstract

The invention relates to the technical field of photovoltaic modules, in particular to a drainage device for photovoltaic power generation panels, the drainage device is fixedly arranged on a sliding frame and arranged below the outer side corners of the photovoltaic panels, when the angle between the two photovoltaic panels is smaller than 180 degrees, water flow can fall into the drainage device along the photovoltaic panels, and the drainage device comprises a drainage cylinder and a drainage assembly; the drainage assembly is slidably arranged in the drainage cylinder, a drainage rod is slidably arranged on the lower end face of the photovoltaic panel, a drainage rope is wound on the drainage rod through a bolt, a reset rope is spirally wound on the drainage rod, the winding direction of the reset rope is opposite to that of the drainage rope, the free end of the reset rope is connected with a torsional spring used for resetting, and the torsional spring is fixedly arranged on the lower end face of the photovoltaic panel. Accumulated water on the surface of the photovoltaic panel can be effectively collected and discharged at different angles, the photovoltaic panel is prevented from being damaged by the accumulated water, and water drops attached to the interior of the photovoltaic panel are removed while large-flow drainage is successfully achieved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic modules, and in particular to a drainage device for photovoltaic power generation panels. Background Art

[0002] With the continuous development of science and technology in modern society, green, energy-saving and low-carbon construction designs have gradually become mainstream. Solar energy has long been regarded as a clean energy to replace existing mineral energy. At present, the application of photovoltaic power generation in my country is becoming more and more extensive. Since photovoltaic panels are processed in modular factories and assembled on site, drainage treatment measures between photovoltaic panels are particularly important. Conventional photovoltaic modules are waterproofed mainly by glue, rubber strips or welding. They can be used normally in the short term, but there are cracks and leaks in the long term.

[0003] In addition, as the sealing performance of photovoltaic panels increases, it is inevitably accompanied by a decrease in heat dissipation capacity. Due to the obvious tension of rainwater, it is difficult to remove it through natural evaporation and other means after it penetrates into the photovoltaic panels.

[0004] Therefore, there is an urgent need for a drainage device for photovoltaic panels, which can be used to drain large amounts of water and remove water droplets attached to the inside of the photovoltaic panels during the drainage process. Summary of the invention

[0005] The object of the present invention is to provide a drainage device for photovoltaic panels, which is used for draining large amounts of water and removing water droplets attached to the inside of the photovoltaic panels during the drainage process.

[0006] The present invention is achieved through the following technical solutions:

[0007] A drainage device for a photovoltaic power generation panel, the photovoltaic power generation panel comprises a plurality of groups of photovoltaic panels that can rotate relative to each other, and the two ends of the photovoltaic panels are rotatably connected to a slide, the slide is slidably arranged on a slide rail and the position is adjusted by a motor, the drainage device is fixedly arranged on the slide and placed below the outer corner of the photovoltaic panel, when the angle between the two photovoltaic panels is less than 180°, water can fall into the drainage device along the photovoltaic panel, the drainage device comprises a drainage cylinder and a drainage component, the drainage component is slidably arranged in the drainage cylinder, a drainage rod is slidably arranged on the lower end surface of the photovoltaic panel, a drainage rope is bolted around the drainage rod, a reset rope is also spirally wound around the drainage rod, and the reset rope is wound in the opposite direction to the drainage rope, the free end of the reset rope is connected to a torsion spring for reset, and the torsion spring is fixedly arranged on the lower end surface of the photovoltaic panel;

[0008] A partition is arranged in the drainage cylinder, and a plurality of water grooves are arranged on the partition. The drainage assembly includes a slide cylinder arranged below the partition, a slide seat is slidably arranged in the slide cylinder, a support rod is rotatably arranged on the outer periphery of the slide seat, and the free end of the support rod is rotatably connected with a drainage plate, and the end of the drainage plate is rotatably arranged on a side of the water groove close to the slide cylinder, the slide seat is fixedly connected to the drainage rope, and a buckle is also arranged on the side of the water groove away from the slide cylinder. In the initial state, the force of the torsion spring on the drainage rope is a tensile force, so that the drainage plate is clamped on the buckle and blocks the water groove. When the accumulated water flow pressure in the drainage cylinder is greater than the tension of the drainage rope, the buckle is pressed and released, and the drainage plate is rotated downward to enter the drainage state. When the water flow pressure in the drainage cylinder is less than the tension of the drainage rope, the reset rope is moved upward by the torsion spring, so that the drainage plate is clamped in the buckle and enters the initial state.

[0009] Furthermore, the drainage process of the drainage device is a cyclic switching process between the initial state and the drainage state, wherein, during the switching process from the initial state to the drainage state, the drainage rod moves spirally downward under the photovoltaic panel to separate the water flow pressed by the lower end area of ​​the photovoltaic panel; during the switching process from the drainage state to the initial state, the drainage rod moves spirally upward under the photovoltaic panel to separate the water flow pressed by the lower end area of ​​the photovoltaic panel.

[0010] Furthermore, a sealing component is arranged between the two rotatably arranged photovoltaic panels.

[0011] Furthermore, the sealing assembly includes a buckle plate arranged on the periphery of the photovoltaic panel, the end of the buckle plate is fixedly connected with a hinge plate, the hinge plate between the two photovoltaic panels is rotatably arranged through a hinge shaft, a plastic layer is arranged on the side of the hinge plate away from the hinge shaft, a buffer layer is arranged on one side of the plastic layer, and the plastic layer is abutted against the photovoltaic panel through the buffer layer, there is a gap between the photovoltaic panel and the buckle plate, and the drain rod is arranged in the gap.

[0012] Furthermore, the buckle is rotatably arranged on the water tank and reset by a spring, the lower end surface of the buckle has a rounded corner, and the surface where the buckle contacts the lower end surface of the drain plate is a plane.

[0013] Furthermore, a plurality of sliding grooves are provided on the outer circumference of the slide cylinder, and a limiting cylinder is provided on the upper end surface of the slide seat. The limiting cylinder is placed between the slide seat and the partition and is movably mounted on the drainage rope. The outer diameter of the limiting cylinder is larger than the center hole of the partition. When the drainage rope moves up to make the upper end of the limiting cylinder abut against the lower end surface of the partition, the drainage plate can be rotated in the sink until it is engaged with the buckle.

[0014] Furthermore, when the drainage rope moves downward, the two ends of the support rod are rotatably connected to the drainage board and the slide seat respectively, and the maximum movement distance of the drainage rope is the sum of the lengths of the drainage board and the support rod.

[0015] Furthermore, a waterproof plate is provided at the connection portion of the two photovoltaic panels, and the waterproof plate is fixedly connected to any photovoltaic panel.

[0016] Furthermore, a pulley is provided on the side of the photovoltaic panel, and the drainage rope is always in contact with the pulley.

[0017] Furthermore, the bottom of the drainage cylinder is connected to a water reservoir via a pipeline.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] 1. The present invention realizes automatic drainage by arranging a drainage cylinder and a drainage assembly, and specifically realizes automatic drainage and resetting through a drainage rope and a reset rope on a drainage rod, which can effectively collect and discharge the accumulated water on the surface of the photovoltaic panel at different angles, avoiding the damage of the photovoltaic panel caused by the accumulated water, and successfully realizes the removal of water droplets attached to the inside of the photovoltaic panel while draining a large flow rate;

[0020] 2. The present invention can effectively collect and discharge the accumulated water on the surface of the photovoltaic panel at different angles to avoid the damage to the photovoltaic panel caused by the accumulated water. It has an automatic reset function to ensure that after the drainage is completed, the device can automatically return to the initial state and prepare for the next drainage. While solving the drainage problem, the design of the drainage device should not affect the heat dissipation capacity of the photovoltaic panel to ensure the working efficiency of the photovoltaic panel.

[0021] 3. The sealing assembly in the present invention improves the sealing performance between photovoltaic panels, effectively prevents the intrusion of pollutants such as moisture and dust, protects the internal structure of the photovoltaic panel, and extends the service life of the photovoltaic panel. Secondly, the design of the sealing assembly allows the photovoltaic panel to perform necessary rotation while maintaining the seal, which not only improves the adaptability of the photovoltaic panel, but also ensures the flexibility and reliability of the photovoltaic system. In addition, the setting of the plastic layer and the buffer layer provides good elasticity and buffering, which can adapt to the slight displacement and thermal expansion between the photovoltaic panels, ensuring the long-term stability of the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the photovoltaic panel of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the drainage assembly of the present invention;

[0026] Figure 4 It is a bottom view structural schematic diagram of the drainage assembly of the present invention;

[0027] Figure 5 It is a schematic diagram of the internal structure of the drainage component of the present invention;

[0028] Figure 6 It is an axial structural schematic diagram of the internal structure of the drainage component of the present invention;

[0029] Figure 7 It is a schematic diagram of a partial cross-sectional structure of the sealing assembly of the present invention;

[0030] Figure 8 It is a schematic diagram of the connection structure between the slide bracket and the slide rail of the present invention.

[0031] Marks and corresponding parts names in the attached drawings:

[0032] 1-photovoltaic panel, 2-slide frame, 3-slide rail, 4-drainage device, 5-motor, 6-waterproof board, 7-pulley, 8-sealing assembly;

[0033] 41-drainage cylinder, 42-drainage assembly, 43-drainage rod, 44-drainage rope, 45-reset rope, 46-torsion spring, 47-partition;

[0034] 421-slide cylinder, 422-slide seat, 423-support rod, 424-drain board, 425-clip, 426-slide groove, 427-limit cylinder;

[0035] 471-Sink;

[0036] 81 - buckle plate, 82 - hinge plate, 83 - hinge shaft, 84 - plastic layer, 85 - buffer layer. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation modes and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0038] Embodiment 1:

[0039] Please refer to the attached Figures 1 to 8As shown, a drainage device for a photovoltaic power generation panel, the photovoltaic power generation panel includes a plurality of groups of photovoltaic panels 1 that can rotate with each other, and the two ends of the photovoltaic panels 1 are rotatably connected to a slide 2, the slide 2 is slidably arranged on a slide rail 3 and the position is adjusted by a motor 5, the drainage device 4 is fixedly arranged on the slide 2 and placed below the outer corner of the photovoltaic panel 1, when the angle between the two photovoltaic panels 1 is less than 180°, the water flow can fall into the drainage device 4 along the photovoltaic panel 1, the drainage device 4 includes a drainage cylinder 41 and a drainage component 42, the drainage component 42 is slidably arranged in the drainage cylinder 41, a drainage rod 43 is slidably arranged on the lower end surface of the photovoltaic panel 1, a drainage rope 44 is bolted on the drainage rod 43, a reset rope 45 is also spirally wound on the drainage rod 43, and the reset rope 45 is wound in the opposite direction to the drainage rope 44, the free end of the reset rope 45 is connected to a torsion spring 46 for resetting, and the torsion spring 46 is fixedly arranged on the lower end surface of the photovoltaic panel 1;

[0040] The drainage cylinder 41 is provided with a partition 47, and a plurality of water troughs 471 are provided on the partition 47. The drainage assembly 42 includes a slide cylinder 421 provided below the partition 47, and a slide seat 422 is slidably provided in the slide cylinder 421. A support rod 423 is rotatably provided on the outer periphery of the slide seat 422. A drainage plate 424 is rotatably connected to the free end of the support rod 423. The end of the drainage plate 424 is rotatably provided on a side of the water trough 471 close to the slide cylinder 421. The slide seat 422 is fixedly connected to the drainage rope 44. The water trough 471 is far away from the drain. A buckle 425 is also provided on the side away from the slide cylinder 421. In the initial state, the force exerted by the torsion spring 46 on the drain rope 44 is a pulling force, so that the drain plate 424 is clamped on the buckle 425 and blocks the water tank 471. When the water pressure accumulated in the drain cylinder 41 is greater than the pulling force of the drain rope 44, the buckle 425 is pressed and loosened, and the drain plate 424 rotates downward to enter the drainage state. When the water pressure in the drain cylinder 41 is less than the pulling force of the drain rope 44, the reset rope 45 is moved upward through the torsion spring 46, so that the drain plate 424 is clamped in the buckle 425 and enters the initial state.

[0041] As attached Figure 1As shown, the photovoltaic panel 1 is rotatably connected to the slide 2 through a fixed hinge support, and rollers are provided at both ends of the slide 2 and cooperate with the slide rail 3. The motor 5 is fixedly provided on the slide 2. In this embodiment, the preferred number of motors 5 is 2, which are respectively provided at both ends of the slide 2, and the output end of the motor 5 is connected with a gear through a belt drive. A toothed belt is fixedly provided on the slide rail 3, and the gear is provided on the slide 2 and cooperates with the toothed belt. When the motor 5 is started under control, the movement of the slide 2 on the slide rail 3 is achieved by changing the distance of the gear on the toothed belt. More specifically, in this embodiment, the number of slides 2 is preferably 3, and the number of photovoltaic panels corresponding thereto is two groups, and they are rotatably arranged on the slides 2 with the same structure. When the motor 5 on one side is turned off, due to the meshing relationship between the gear and the toothed belt, the corresponding slide 2 and the slide rail 3 remain relatively fixed. When the other side is started, if the slide 2 moves away from the fixed motor 5, the angle of the photovoltaic panel 1 between the two groups of photovoltaic panels will increase. When the displacement reaches the limit position, the two groups of photovoltaic panels will be a plane whole; if the slide 2 moves toward the fixed motor 5, the angle of the photovoltaic panel 1 between the two groups of photovoltaic panels will decrease. When the displacement reaches the limit position, the two groups of photovoltaic panels will approach verticality. It can be understood that the motors 5 on both sides can control the movement at the same time, that is, the slides 2 at the two ends can be used as active parts, and the slides 2 at the middle position of the two ends can be used as driven parts, and finally the angle adjustment between the two groups of photovoltaic panels can be achieved. The drainage process of the drainage device 4 is a cyclic switching process between the initial state and the drainage state, wherein, during the switching process from the initial state to the drainage state, the drainage rod 43 moves downward in a spiral under the photovoltaic panel 1 to separate the water flow pressed by the lower end surface of the photovoltaic panel 1; during the switching process from the drainage state to the initial state, the drainage rod 43 moves upward in a spiral under the photovoltaic panel 1 to separate the water flow pressed by the lower end surface of the photovoltaic panel 1.

[0042] For the above structure, the working principle of the drainage device 4 is to achieve automatic drainage and reset through a sophisticated mechanical structure. Among them, the drainage cylinder 41 is fixed on the slide 2, located below the outer corner of the photovoltaic panel 1, and is used to collect the water flowing down along the photovoltaic panel 1. A partition 47 is provided inside the drainage cylinder 41, and a plurality of water tanks 471 are provided on the partition 47. These water tanks 471 are used to temporarily store rainwater and wait for drainage. A drainage rod 43 is slidably provided on the lower end surface of the photovoltaic panel 1, and a drainage rope 44 is wound around the drainage rod 43. The drainage rope 44 connects the slide 422 and the drainage board 424, and its function is to pull the drainage board 424 under the action of water flow pressure to realize the opening and closing of the drainage board 424. A reset rope 45 is also spirally wound around the drainage rod 43, and the reset rope 45 is wound in the opposite direction to the drainage rope 44, and a torsion spring 46 is connected to its free end. The torsion spring 46 applies tension to the drain rope 44 in the initial state, keeps the drain plate 424 clamped on the buckle 425, blocks the water tank 471, and prevents the water from being discharged. When the pressure of the accumulated water in the drain cylinder 41 is greater than the tension of the drain rope 44, the drain rope 44 is stretched, causing the drain plate 424 to overcome the tension of the torsion spring 46, loosen from the buckle 425, and enter the drainage state, so that the water can be discharged. When the water pressure decreases, the tension of the torsion spring 46 causes the drain rope 44 to contract, and the reset rope 45 is moved upward through the torsion spring 46, so that the drain plate 424 is clamped back to the buckle 425, and enters the initial state, completing the drainage process.

[0043] As for the drainage state, in the initial state, the force of the torsion spring 46 on the drainage rope 44 is a tension, so that the drainage plate 424 is clamped on the buckle 425 and blocks the water tank 471. When the pressure of the accumulated water flow in the drainage cylinder 41 is greater than the tension of the drainage rope 44, the buckle 425 is pressed and released, and the drainage plate 424 is rotated downward to enter the drainage state. When the water flow pressure in the drainage cylinder 41 is less than the tension of the drainage rope 44, the reset rope 45 is moved upward through the torsion spring 46, so that the drainage plate 424 is clamped in the buckle 425 and enters the initial state. Such a design enables the drainage device 4 to automatically open the drainage when the water flow pressure is greater than the tension of the torsion spring 46, and automatically reset when the water flow pressure decreases, thereby realizing the functions of automatic drainage and backflow prevention. By winding the drain rope 44 and the reset rope 45 in reverse, the drain rod 43 can be rotated in reverse on the photovoltaic panel 1. Compared with the rotation in the same direction, the centrifugal force can be used to throw the water on the drain rod 43 out during the reverse rotation, thereby promoting drainage efficiency. The addition of the torsion spring 46 provides an automatic reset mechanism, which can realize the automatic reset of the drain plate 424 without external energy, thereby reducing maintenance costs and operational complexity.

[0044] It should be noted that with the widespread application of photovoltaic power generation technology, the modular design and on-site assembly of photovoltaic panels 1 make drainage treatment particularly important. The waterproofing of traditional photovoltaic modules mainly relies on gluing, sandwiching strips or welding for splicing. Although these methods are effective in the short term, there is a risk of cracking and leakage in the long run. In addition, as the sealing performance of photovoltaic panels increases, their heat dissipation capacity tends to decrease. After rainwater and other liquids penetrate into photovoltaic panels, it is difficult to remove them through natural evaporation and other means, which not only affects the performance of photovoltaic panels 1, but may also shorten their service life.

[0045] In view of the above problems, the applicant has proposed a drainage device for photovoltaic panels. First, by cooperating with the slide 2 and the slide rail 3, and adjusting the position by the motor 5, it can adapt to the drainage needs at different angles. It can be understood that the smaller the angle between the two photovoltaic panels 1, the more it can increase the fluidity of the water flow. In addition, due to the tension of water, it will adhere to and penetrate into the interior of the photovoltaic panel 1. Especially when facing large-flow rainwater and the like, the pressure of the flowing water is more likely to aggravate the above situation; therefore, automatic drainage is also carried out by setting a drainage cylinder 41 and a drainage assembly 42, specifically, automatic drainage and reset are achieved through the drainage rope 44 and the reset rope 45 on the drainage rod 43; more specifically, a partition 47 is set in the drainage cylinder 41. Due to the cyclic rotation of the drainage plate 424, the amount of water in the drainage cylinder 41 is also in a reciprocating process, and the direct It is manifested as a storage-release process of water in the drainage tube 41, and this process is used as a power source for the drainage rod 43 to automatically drain water. What is different from the prior art is that if external power is used to drain the inside of the photovoltaic panel 1, it is difficult to avoid causing corresponding mechanical vibrations to the photovoltaic panel 1 itself. In this environment, mechanical vibrations will inevitably cause more serious water jets or accelerate infiltration. Therefore, it is necessary to maintain relative stability during drainage operations. Based on the above structure, the structure in this embodiment can effectively collect and discharge accumulated water on the surface of the photovoltaic panel 1 at different angles to avoid damage to the photovoltaic panel 1 caused by accumulated water. It has an automatic reset function to ensure that after the drainage is completed, the device can automatically return to its initial state to prepare for the next drainage. While solving the drainage problem, the design of the drainage device 4 should not affect the heat dissipation capacity of the photovoltaic panel 1 to ensure the working efficiency of the photovoltaic panel 1.

[0046] Embodiment 2:

[0047] This embodiment only describes the parts that are different from the embodiment 1. Specifically, a sealing assembly 8 is provided between the two photovoltaic panels 1 that are rotatably arranged. The sealing assembly 8 includes a gusset plate 81 provided on the outer periphery of the photovoltaic panel 1, and a hinge plate 82 is fixedly connected to the end of the gusset plate 81. The hinge plate 82 between the two photovoltaic panels 1 is rotatably arranged through a hinge shaft 83. A plastic layer 84 is provided on the side of the hinge plate 82 away from the hinge shaft 83. A buffer layer 85 is provided on one side of the plastic layer 84, and the plastic layer 84 is abutted against the photovoltaic panel 1 through the buffer layer 85. There is a gap between the photovoltaic panel 1 and the gusset plate 81, and the drainage rod 43 is arranged in the gap.

[0048] In the existing photovoltaic panel design, since the photovoltaic panels 1 need to rotate relative to each other to adapt to different angles of light, this rotation connection often leads to a decrease in sealing performance. Especially under severe weather conditions, such as rain, poor sealing can lead to the intrusion of moisture and dust, which not only affects the power generation efficiency of the photovoltaic panel 1, but may also cause circuit short circuits, corrosion and other problems, and even cause the failure of the entire photovoltaic system in severe cases. Therefore, improving the sealing performance between photovoltaic panels is one of the key technical issues to ensure the stable operation of the photovoltaic system.

[0049] In this embodiment, a sealing assembly 8 is provided between two photovoltaic panels 1 that are arranged to rotate, specifically including a gusset plate 81 provided on the periphery of the photovoltaic panel 1, a hinge plate 82 is fixedly connected to the end of the gusset plate 81, the hinge plate 82 between the two photovoltaic panels 1 is arranged to rotate through a hinge shaft 83, a plastic layer 84 is provided on the side of the hinge plate 82 away from the hinge shaft 83, a buffer layer 85 is provided on one side of the plastic layer 84, and the buffer layer 85 abuts against the photovoltaic panel 1, there is a gap between the photovoltaic panel 1 and the gusset plate 81, and the drainage rod 43 is provided in the gap. The above structure allows the photovoltaic panel 1 to remain sealed when rotating, while allowing necessary drainage, the setting of the plastic layer 84 and the buffer layer 85 provides sufficient elasticity and buffering to adapt to the slight displacement and thermal expansion between the photovoltaic panels 1, and ensure that the sealing performance will not be affected by the rotation of the photovoltaic panel 1, in addition, the material selection and design of the plastic layer 84 and the buffer layer 85 also consider weather resistance and chemical resistance to resist the influence of the external environment.

[0050] In the above structure, the sealing performance between the photovoltaic panels is improved, the intrusion of pollutants such as moisture and dust is effectively prevented, the internal structure of the photovoltaic panel 1 is protected, and the service life of the photovoltaic panel 1 is extended. Secondly, the design of the sealing assembly 8 allows the photovoltaic panel 1 to perform necessary rotation while maintaining the seal, which not only improves the adaptability of the photovoltaic panel 1, but also ensures the flexibility and reliability of the photovoltaic system. In addition, the setting of the plastic layer 84 and the buffer layer 85 provides good elasticity and buffering, which can adapt to the slight displacement and thermal expansion between the photovoltaic panels 1, and ensure the long-term stability of the sealing performance.

[0051] Embodiment 3:

[0052] This embodiment only describes the parts that are different from the first embodiment. Specifically, the buckle 425 is rotatably arranged on the water tank 471 and reset by a spring. The lower end surface of the buckle 425 is rounded, and the surface of the buckle 425 in contact with the lower end surface of the drain plate 424 is a plane. The outer periphery of the slide cylinder 421 is provided with a plurality of slide grooves 426. The upper end surface of the slide seat 422 is provided with a limiting cylinder 427. The limiting cylinder 427 is placed between the slide seat 422 and the partition 47 and is movably sleeved on the drain rope 44. The outer diameter of the limiting cylinder 427 is larger than the central hole of the partition 47. When the drain rope 44 moves up to make the upper end of the limiting cylinder 427 abut against the lower end surface of the partition 47, the drain plate 424 can rotate in the water tank 471 to be engaged with the buckle 425.

[0053] In this embodiment, it is more preferred that when the drainage rope 44 moves downward, the two ends of the support rod 423 are rotatably connected to the drainage board 424 and the slide 422 respectively, and the maximum movement distance of the drainage rope 44 is the sum of the lengths of the drainage board 424 and the support rod 423. The two ends of the support rod 423 are rotatably connected to the drainage board 424 and the slide 422 respectively, and the maximum movement distance of the drainage rope 44 is the sum of the lengths of the drainage board 424 and the support rod 423. This design allows the drainage rope 44 to move in a larger range, so that the drainage board 424 can be pulled more effectively when needed, and more efficient drainage can be achieved. The connection method between the support rod 423 and the drainage board 424 ensures that when the drainage rope 44 moves, the drainage board 424 can stably respond to changes in water flow pressure, thereby achieving precise drainage control.

[0054] In this embodiment, it is more preferred that a waterproof plate 6 is provided at the connection part of the two photovoltaic panels 1, and the waterproof plate 6 is fixedly connected to any photovoltaic panel 1. The waterproof plate 6 is fixedly connected to any photovoltaic panel 1. This design forms an additional waterproof layer by adding the waterproof plate 6 to the connection part of the photovoltaic panel 1, which effectively prevents moisture from invading from the connection part. The fixed connection method of the waterproof plate 6 ensures that the waterproof plate 6 can be stably maintained in place when the photovoltaic panel 1 rotates or is subjected to external force, thereby improving the waterproof effect.

[0055] In this embodiment, it is more preferred that a pulley 7 is provided on the side of the photovoltaic panel 1, and the drainage rope 44 is always in contact with the pulley 7.

[0056] It should be noted that in the prior art, the fixing and release of the drain plate 424 may not be stable enough, resulting in reduced drainage efficiency or failure under high water pressure or extreme weather conditions. Therefore, it is necessary to ensure that the drain plate 424 can be stably fixed in the drainage position when needed and can be reliably reset after the drainage is completed. The lower end surface of the buckle 425 is designed to be rounded, and the contact surface with the lower end surface of the drain plate 424 is a plane. Such a design enables the buckle 425 to be stably maintained in the initial position under the action of the spring, that is, the drain plate 424 is clamped on the buckle 425 and blocks the water tank 471. When the water flow pressure is greater than the tension of the drainage rope 44, the drain plate 424 rotates downward, the buckle 425 is pressed and released, and the water flow is allowed to be discharged through the drain plate 424. After the drainage is completed, the spring force resets the buckle 425, and the drain plate 424 returns to the initial position and blocks the water tank 471. This design not only improves the reliability of fixing and releasing the drain plate 424 , but also reduces maintenance requirements and operating costs by reducing the friction between the buckle 425 and the drain plate 424 .

[0057] A plurality of slide grooves 426 are provided on the outer periphery of the slide cylinder 421, and a limiting cylinder 427 is provided on the upper end surface of the slide seat 422. The limiting cylinder 427 is placed between the slide seat 422 and the partition 47, and is movably sleeved on the drainage rope 44, and its outer diameter is larger than the central hole of the partition 47. When the drainage rope 44 moves up to make the upper end of the limiting cylinder 427 abut against the lower end surface of the partition 47, the drainage plate 424 can be rotated in the water tank 471 to be engaged with the buckle 425. This design ensures the stability of the drainage rope 44 during movement, and through the precise control of the limiting cylinder 427, the precise positioning of the drainage plate 424 is achieved. When the drainage rope 44 moves up or down, the interaction between the limiting cylinder 427 and the partition 47 ensures the stable rotation of the drainage plate 424, thereby improving the drainage efficiency and the response speed of the device.

[0058] Embodiment 4:

[0059] This embodiment only describes the parts that are different from the embodiment 1. Specifically, the bottom of the drainage tube 41 is connected to a water reservoir through a pipeline. In the existing photovoltaic panel drainage system, the discharged rainwater is usually directly discharged to the ground, which not only wastes precious water resources, but also may cause ground erosion and soil erosion. Especially in arid or semi-arid areas, the collection and utilization of rainwater is particularly important.

[0060] The drainage tube 41 is the main component for rainwater collection. The pipe at the bottom is directly connected to the water storage tank, ensuring that rainwater can be smoothly discharged from the photovoltaic panel 1 and transferred to the water storage tank. The design of the water storage tank needs to take into account factors such as capacity, material durability, and leakage prevention to ensure that the collected rainwater can be stored safely and effectively. In addition, the partition 47 can also serve as a filtration system to remove impurities and pollutants in the rainwater, improve the water quality, and make it suitable for irrigation, cleaning or other non-drinking purposes.

[0061] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drainage device for a photovoltaic power generation panel, the photovoltaic power generation panel comprising a plurality of groups of photovoltaic panels (1) that can rotate relative to each other, and the two ends of the photovoltaic panels (1) are rotatably connected to a slide frame (2), the slide frame (2) is slidably arranged on a slide rail (3) and the position is adjusted by a motor (5), characterized in that: The drainage device (4) is fixedly arranged on the slide (2) and placed below the outer corner of the photovoltaic panel (1). When the angle between the two photovoltaic panels (1) is less than 180°, water can flow down along the photovoltaic panels (1) into the drainage device (4). The drainage device (4) comprises a drainage cylinder (41) and a drainage component (42). The drainage component (42) is slidably arranged in the drainage cylinder (41). A drainage rod (43) is slidably arranged on the lower end surface of the photovoltaic panel (1). A drainage rope (44) is bolted around the drainage rod (43). A reset rope (45) is also spirally wound around the drainage rod (43). The reset rope (45) is wound in opposite directions to the drainage rope (44). The free end of the reset rope (45) is connected to a torsion spring (46) for resetting. The torsion spring (46) is fixedly arranged on the lower end surface of the photovoltaic panel (1). The drainage cylinder (41) is provided with a partition (47), and a plurality of water grooves (471) are provided on the partition (47). The drainage assembly (42) comprises a slide cylinder (421) provided below the partition (47), and a slide seat (422) is slidably provided in the slide cylinder (421). A support rod (423) is rotatably provided on the outer periphery of the slide seat (422), and a drainage plate (424) is rotatably connected to the free end of the support rod (423). The end of the drainage plate (424) is rotatably provided on a side of the water groove (471) close to the slide cylinder (421), and the slide seat (422) is fixedly connected to the drainage rope (44). The water groove (471) ) is also provided with a buckle (425) on the side away from the slide (421). In the initial state, the force exerted by the torsion spring (46) on the drain rope (44) is a pulling force, so that the drain plate (424) is clamped on the buckle (425) and blocks the water tank (471). When the pressure of the accumulated water flow in the drain cylinder (41) is greater than the pulling force of the drain rope (44), the buckle (425) is pressed and released, and the drain plate (424) is rotated downward to enter the drainage state. When the water flow pressure in the drain cylinder (41) is less than the pulling force of the drain rope (44), the reset rope (45) is moved upward through the torsion spring (46), so that the drain plate (424) is clamped in the buckle (425) and enters the initial state.

2. A drainage device for a photovoltaic panel according to claim 1, characterized in that: The drainage process of the drainage device (4) is a cyclic switching process between an initial state and a drainage state, wherein, during the switching process from the initial state to the drainage state, the drainage rod (43) moves downward in a spiral below the photovoltaic panel (1) to disengage the water flow pressed by the lower end surface of the photovoltaic panel (1); and during the switching process from the drainage state to the initial state, the drainage rod (43) moves upward in a spiral below the photovoltaic panel (1) to disengage the water flow pressed by the lower end surface of the photovoltaic panel (1).

3. A drainage device for a photovoltaic panel according to claim 1, characterized in that: A sealing component (8) is arranged between two photovoltaic panels (1) that are rotatably arranged.

4. A drainage device for a photovoltaic panel according to claim 3, characterized in that: The sealing assembly (8) comprises a buckle plate (81) arranged on the periphery of the photovoltaic panel (1), the end of the buckle plate (81) is fixedly connected to a hinge plate (82), the hinge plate (82) between the two photovoltaic panels (1) is rotatably arranged via a hinge shaft (83), a plastic layer (84) is arranged on the side of the hinge plate (82) away from the hinge shaft (83), a buffer layer (85) is arranged on one side of the plastic layer (84), and the plastic layer (84) is in contact with the photovoltaic panel (1) via the buffer layer (85), a gap exists between the photovoltaic panel (1) and the buckle plate (81), and the drainage rod (43) is arranged in the gap.

5. A drainage device for a photovoltaic panel according to claim 2, characterized in that: The buckle (425) is rotatably arranged on the water tank (471) and is reset by a spring. The lower end surface of the buckle (425) has a rounded corner, and the surface where the buckle (425) contacts the lower end surface of the drain plate (424) is a plane.

6. A drainage device for a photovoltaic panel according to claim 5, characterized in that: A plurality of slide grooves (426) are provided on the outer periphery of the slide cylinder (421); a limiting cylinder (427) is provided on the upper end surface of the slide seat (422); the limiting cylinder (427) is placed between the slide seat (422) and the partition plate (47) and is movably sleeved on the drainage rope (44); the outer diameter of the limiting cylinder (427) is larger than the central hole of the partition plate (47); when the drainage rope (44) moves upward to make the upper end of the limiting cylinder (427) abut against the lower end surface of the partition plate (47), the drainage plate (424) can be rotated in the water tank (471) until it is engaged with the buckle (425).

7. A drainage device for a photovoltaic panel according to claim 1, characterized in that: When the drainage rope (44) moves downward, the two ends of the support rod (423) are rotatably connected to the drainage board (424) and the slide seat (422) respectively, and the maximum moving distance of the drainage rope (44) is the sum of the lengths of the drainage board (424) and the support rod (423).

8. A drainage device for a photovoltaic panel according to claim 7, characterized in that: A waterproof plate (6) is provided at the connection portion of the two photovoltaic panels (1), and the waterproof plate (6) is fixedly connected to any one of the photovoltaic panels (1).

9. A drainage device for a photovoltaic panel according to claim 7, characterized in that: A pulley (7) is provided on the side of the photovoltaic panel (1), and the drainage rope (44) is always in contact with the pulley (7).

10. A drainage device for a photovoltaic panel according to claim 8 or 9, characterized in that: The bottom of the drainage cylinder (41) is connected to a water reservoir via a pipeline.

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