Photovoltaic Inverter Protection Device

Abstract

The present invention relates to the technical field of photovoltaic inverter protection devices, and particularly to a photovoltaic inverter protection device. It includes: an inverter box body, the inverter box body is provided with a cooling pipe, the inverter box body is fixedly connected with a wind collecting shell, the wind collecting shell is fixedly connected with a motor, and the output shaft of the motor is fixedly connected with a fan; a bird repelling member, fixedly connected to the upper side of the inverter box body; a first rigid pipe, communicating with the wind collecting shell, the first rigid pipe communicates with a first communicating shell, the first communicating shell communicates with a second rigid pipe, and the second rigid pipe communicates with a blowing shell. By driving the fan to rotate through the motor to generate a wind flow, the wind flow enters the cooling pipe to take away the heat, thereby controlling the temperature of the inverter box body. At the same time, when there is wind blowing, the bird repelling member shakes and makes a sound, thereby driving away the nearby flying birds, reducing the probability of flying birds building nests on the inverter box body and reducing the amount of flying bird excrement on the inverter, ensuring the normal operation of the inverter.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic inverter protection devices, and particularly to photovoltaic inverter protection devices. Background Art

[0002] A photovoltaic inverter is an electronic device that converts direct current into alternating current, mainly used in solar photovoltaic power generation systems to convert the direct current generated by solar panels into alternating current that meets grid standards for grid connection or load use. It also undertakes functions such as maximum power point tracking, grid monitoring, fault protection, and data monitoring to ensure the efficient and stable operation of the system. The photovoltaic inverter protection device is a key component to ensure the safe operation of the system, prevent equipment damage, and personal accidents.

[0003] During the use of outdoor photovoltaic inverters, birds often land on or even build nests on the photovoltaic inverter protection devices. This will affect the heat dissipation ability of the photovoltaic inverter protection devices, resulting in too high temperature of the photovoltaic inverter. In addition, when birds land on the photovoltaic inverter protection devices, they will excrete. The excrement of birds will corrode the photovoltaic inverter protection devices. Both of the above situations will cause the photovoltaic inverter to malfunction. Summary of the Invention

[0004] In order to overcome the disadvantages mentioned in the above background art, the present invention provides a photovoltaic inverter protection device.

[0005] Technical Solution: The photovoltaic inverter protection device includes:

[0006] An inverter box body, the inverter box body is provided with a cooling pipe, the inverter box body is fixedly connected with a wind collecting shell communicated with the cooling pipe, the wind collecting shell is fixedly connected with a motor, and the output shaft of the motor is fixedly connected with a fan.

[0007] A bird repellent member, fixedly connected to the upper side of the inverter box body;

[0008] A first rigid pipe, communicated with the wind collecting shell, the first rigid pipe is communicated with a first communicating shell, the first communicating shell is communicated with a second rigid pipe, the second rigid pipe is communicated with a blowing shell, and the blowing shell is used to blow wind towards the bird repellent member.

[0009] In addition, particularly preferably, it further includes:

[0010] A first sliding column, slidably connected in the first communicating shell, and the first sliding column is used to control the communication and closing of the first rigid pipe and the second rigid pipe.

[0011] In addition, particularly preferably, it further includes:

[0012] The fixed shell is fixedly connected to the upper side of the inverter box body. A sliding member is slidably connected to the fixed shell, and a first spring is arranged between the sliding member and the fixed shell;

[0013] The moving plate is fixedly connected to the sliding member. The moving plate is in contact with the bird repellent member. The moving plate is fixedly connected with a connecting rod, and the connecting rod passes through the first communication shell and is fixedly connected with the first sliding column.

[0014] In addition, particularly preferably, the blowing shell is located between the moving plate and the bird repellent member.

[0015] In addition, particularly preferably, it further includes:

[0016] The first limiting column is slidably connected to the first communication shell. A second spring is arranged between the first limiting column and the first communication shell. The first sliding column is provided with a first groove, and the first limiting column is inserted into the first groove to limit the first sliding column.

[0017] In addition, particularly preferably, it further includes:

[0018] The water collecting shell is fixedly connected to the inverter box body. The water collecting shell is connected with a third rigid pipe, and the third rigid pipe is connected with a second communication shell;

[0019] The fourth rigid pipe is connected to the cooling pipe. The fourth rigid pipe is connected with the second communication shell. The inverter box body is provided with a water collecting groove. The projections of the moving plate and the bird repellent member on the horizontal plane are both smaller than the projection of the water collecting groove on the horizontal plane. The water collecting shell and the water collecting groove are connected through a fifth rigid pipe.

[0020] In addition, particularly preferably, it further includes:

[0021] The second sliding column is slidably connected in the second communication shell. The second sliding column is used to control the connection and disconnection of the third rigid pipe and the fourth rigid pipe.

[0022] In addition, particularly preferably, it further includes:

[0023] The gas storage shell is fixedly connected to the inverter box body. The gas storage shell is filled with a thermally expandable gas;

[0024] The sliding rod is slidably connected to the gas storage shell. The sliding rod passes through the second communication shell and is fixedly connected with the second sliding column.

[0025] In addition, particularly preferably, it further includes:

[0026] The second limiting column is slidably connected to the gas storage shell. A third spring is provided between the second limiting column and the gas storage shell. The sliding rod is provided with a second groove. The second limiting column is inserted into the second groove to limit the sliding rod.

[0027] In addition, it is particularly preferred that one end of the cooling pipe away from the air collecting shell is located below the inverter case, so as to allow the air and water discharged from the cooling pipe to be blown toward the ground below the inverter case.

[0028] The beneficial effects produced by adopting the above scheme are as follows: the present invention generates wind flow by driving the blade fan to rotate through the motor, so that the wind flow enters the cooling pipe and takes away the heat, thereby controlling the temperature of the inverter box and reducing the failure of the inverter box caused by excessive temperature. At the same time, a bird-repellent component is provided. When the wind blows, the bird-repellent component shakes and makes a sound, thereby driving away nearby birds, reducing the probability of birds nesting on the inverter box and reducing the amount of bird excrement on the inverter, thereby ensuring the normal operation of the inverter.

[0029] When a bird lands on the bird-repelling member, the movable plate drives the first sliding column to move, so that the air flow blows from the blowing shell to the bird-repelling member, causing the bird-repelling member to shake and make a sound to drive the bird away. After the bird moves away, the bird-repelling member stops shaking, reducing the generation of noise, and at the same time reducing the working intensity of the bird-repelling member and extending its service life.

[0030] When the temperature of the inverter box is too high, the water in the water collecting shell enters the cooling pipe, thereby improving the heat dissipation effect of the inverter box, so as to dissipate the heat of the inverter box as soon as possible, and the excess water is discharged from the cooling pipe and drips onto the ground, thereby lowering the temperature of the ground, thereby lowering the ambient temperature near the inverter box and further accelerating the dissipation of the inverter box temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 2 Schematic diagram of the three-dimensional structure of the bird-repelling component and the blowing shell of the present invention;

[0033] Figure 3 It is a schematic diagram of the three-dimensional structure of the motor and the blade fan of the present invention;

[0034] Figure 4 Schematic diagram of the three-dimensional structure of the inverter box and cooling pipe of the present invention;

[0035] Figure 5 It is a three-dimensional structural cross-sectional view of the gas storage shell and the sliding rod of the present invention.

[0036] In the figure: 1, inverter box body; 101, water collecting tank; 2, cooling pipe; 3, air collecting shell; 4, motor; 5, fan; 6, bird repellent; 7, first rigid pipe; 8, first connecting shell; 9, second rigid pipe; 10, blowing shell; 11, first sliding column; 12, fixed shell; 13, sliding part; 14, moving plate; 15, connecting rod; 16, first limiting column; 17, water collecting shell; 18, third rigid pipe; 19, second connecting shell; 20, fourth rigid pipe; 21, fifth rigid pipe; 22, second sliding column; 23, air storage shell; 24, sliding rod; 25, second limiting column. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0038] A photovoltaic inverter protection device, as Figures 1-4 shown, includes an inverter box body 1. The inverter box body 1 is provided with a cooling pipe 2. The inverter box body 1 is fixedly connected with an air collecting shell 3 communicated with the cooling pipe 2. The air collecting shell 3 is fixedly connected with a motor 4. The output shaft of the motor 4 is fixedly connected with a fan 5; a bird repellent 6, fixedly connected to the upper side of the inverter box body 1; a first rigid pipe 7, communicated with the air collecting shell 3. The first rigid pipe 7 is communicated with a first connecting shell 8. The first connecting shell 8 is communicated with a second rigid pipe 9. The second rigid pipe 9 is communicated with a blowing shell 10. The blowing shell 10 is used to blow air towards the bird repellent 6.

[0039] In the above solution, it aims to dissipate heat from the inverter box body 1 and drive away flying birds. The illustrated cooling pipe 2 is arranged in a coil on the rear side and the lower side of the inverter box body 1. During actual use, it can be adjusted according to needs to achieve the best heat dissipation effect. The air collecting shell 3 is in a funnel shape, used to inhale more air to form an air current, and make the air current enter the cooling pipe 2 to take away the heat of the inverter box body 1. A shielding net can be arranged at the entrance of the air collecting shell 3. The bird repellent 6 can adopt a relatively thin metal sheet or plastic sheet, so that the bird repellent 6 generates vibrations and makes sounds when being blown, thereby driving away flying birds. The right side of the bird repellent 6 can be fixed as a whole side or fixed at a fixed point according to needs, and the projection of the bird repellent 6 on the horizontal plane is larger than the projection of the inverter box body 1 on the horizontal plane, so that flying birds cannot land on the inverter box body 1.

[0040] Furthermore, as Figure 3 shown, it further includes: a first sliding column 11, slidably connected in the first connecting shell 8. The first sliding column 11 is used to control the connection and disconnection of the first rigid pipe 7 and the second rigid pipe 9.

[0041] In the above solution, it aims to control the movement of the first sliding column 11. When there are flying birds, the first connecting shell 8 connects the first rigid tube 7 and the second rigid tube 9, so that the bird repellent 6 repels the birds. When the flying birds leave, the connection between the first rigid tube 7 and the second rigid tube 9 by the first connecting shell 8 is disconnected, so as to avoid noise pollution caused by the long-term vibration of the bird repellent 6.

[0042] Further, as Figures 1-3 shown, it further includes: a fixed shell 12, fixedly connected to the upper side of the inverter box body 1. A sliding member 13 is slidably connected to the fixed shell 12, and a first spring is provided between the sliding member 13 and the fixed shell 12; a moving plate 14, fixedly connected to the sliding member 13, the moving plate 14 is in contact with the bird repellent 6, the moving plate 14 is fixedly connected with a connecting rod 15, and the connecting rod 15 passes through the first connecting shell 8 and is fixedly connected with the first sliding column 11. The blowing shell 10 is located between the moving plate 14 and the bird repellent 6.

[0043] In the above solution, it aims to monitor whether there are flying birds landing on the inverter box body 1. The elastic coefficient required for the first spring between the sliding member 13 and the fixed shell 12 does not need to be too large, as long as it can enable the sliding member 13 to reset normally, so as to avoid the sliding member 13 not being pressed down when there are flying birds landing on the inverter box body 1. The position of the blowing shell 10 is used to ensure that the air flow can blow to the bird repellent 6, thus ensuring the normal operation of the device.

[0044] Further, as Figure 3 shown, it further includes: a first limiting column 16, hermetically slidably connected to the first connecting shell 8, a second spring is provided between the first limiting column 16 and the first connecting shell 8, a first groove is provided on the first sliding column 11, and the first limiting column 16 is inserted into the first groove to limit the first sliding column 11.

[0045] In the above solution, it aims to limit the first sliding column 11, so as to avoid the moving plate 14 driving the first sliding column 11 to vibrate frequently due to environmental reasons. The first limiting column 16 consists of a cylinder and a hemisphere. The depth of the first groove on the first sliding column 11 is less than the radius of the hemisphere of the first limiting column 16. The second spring between the first limiting column 16 and the first connecting shell 8 is initially in a compressed state, and is used to provide the force required for the first limiting column 16 to limit the first sliding column 11.

[0046] Working process: When this device is in use, install the inverter box body 1 at the usage position, start the motor 4, the output shaft of the motor 4 drives the fan 5 to rotate, thereby forming a flow of air. The flow of air enters the cooling pipe 2 from the air collecting shell 3, and then is discharged from the lower side of the cooling pipe 2 to dissipate heat from the inverter box body 1. When a bird wants to land on the inverter box body 1, the bird lands on the bird repellent member 6. The bird presses down on the bird repellent member 6, and the bird repellent member 6 drives the moving plate 14 to move. The moving plate 14 drives the sliding member 13 to move. The sliding member 13 moves downward and compresses the adjacent first spring. While the moving plate 14 is moving, it drives the connecting rod 15 to move. The connecting rod 15 drives the first sliding column 11 to move. The first sliding column 11 moves downward and presses against the first limiting column 16. The first limiting column 16 moves to the right and compresses the adjacent second spring. When the first limiting column 16 separates from the first groove on the first sliding column 11, it stops moving. When the first sliding column 11 releases the blockage of the first rigid pipe 7 and the second rigid pipe 9, a part of the air flow formed by the fan 5 starts from the air collecting shell 3, passes through the first rigid pipe 7, the first connecting shell 8, the second rigid pipe 9 and enters the blowing shell 10, and then is blown out from the blowing shell 10, causing the bird repellent member 6 to vibrate and make a sound, thereby driving away the bird with the vibration and the sound. When the bird flies away, the sliding member 13 resets under the action of the adjacent first spring. The sliding member 13 drives the moving plate 14 to reset. The moving plate 14 drives the first sliding column 11 to reset through the connecting rod 15. After the first sliding column 11 resets, the first limiting column 16 inserts into the first groove of the first sliding column 11 under the action of the adjacent second spring. At this time, the first sliding column 11 blocks the connection between the first rigid pipe 7 and the second rigid pipe 9 and the first connecting shell 8, so that the air flow cannot pass through, in order to prevent the bird repellent member 6 from vibrating continuously and generating excessive noise.

[0047] Further, as Figure 1 and Figures 3-5 shown, it further includes: a water collecting shell 17, fixedly connected to the inverter box body 1. The water collecting shell 17 is connected to a third rigid pipe 18, and the third rigid pipe 18 is connected to a second connecting shell 19; a fourth rigid pipe 20, connected to the cooling pipe 2, and the fourth rigid pipe 20 is connected to the second connecting shell 19. The inverter box body 1 is provided with a water collecting groove 101. The projections of the moving plate 14 and the bird repellent member 6 on the horizontal plane are both smaller than the projection of the water collecting groove 101 on the horizontal plane. The water collecting shell 17 and the water collecting groove 101 are connected through a fifth rigid pipe 21.

[0048] In the above solution, it aims to improve the heat dissipation capacity of the inverter box body 1. The water collecting shell 17 is used for storing water. Water can be actively added to the water collecting shell 17, or rainwater can be collected through the water collecting groove 101 for utilization. The connection of the fourth rigid pipe 20 and the water collecting shell 17 is located at the lower side of the water collecting shell 17. The water collecting groove 101 is used for adding water to the water collecting shell 17 or collecting rainwater.

[0049] Further, as Figure 5As shown, it further includes: a second sliding column 22, which is hermetically and slidably connected inside the second communication shell 19, and the second sliding column 22 is used to control the connection and disconnection between the third rigid tube 18 and the fourth rigid tube 20.

[0050] In the above solution, it aims to control the movement of the second sliding column 22. When the temperature is too high, the second communication shell 19 connects the third rigid tube 18 and the fourth rigid tube 20, so that the water in the water collection shell 17 enters the cooling tube 2, thereby improving the heat dissipation capacity of the inverter box 1.

[0051] Furthermore, as Figure 4 and Figure 5 shown, it further includes: a gas storage shell 23, which is fixedly connected to the inverter box 1, and the gas storage shell 23 is filled with a thermally expandable gas; a sliding rod 24, which is slidably connected to the gas storage shell 23, and the sliding rod 24 passes through the second communication shell 19 and is fixedly connected to the second sliding column 22.

[0052] In the above solution, it aims to monitor the temperature of the inverter box 1. The thermally expandable gas in the gas storage shell 23 expands after heating up to push the sliding rod 24 to move. One side of the gas storage shell 23 in contact with the inverter box 1 is made of a material with high thermal conductivity, and the rest is made of heat-insulating materials. The sliding rod 24 is made of heat-insulating materials to improve the accuracy of temperature monitoring.

[0053] Furthermore, as Figure 5 shown, it further includes: a second limiting column 25, which is slidably connected to the gas storage shell 23. A third spring is arranged between the second limiting column 25 and the gas storage shell 23. The sliding rod 24 is provided with a second groove, and the second limiting column 25 is inserted into the second groove to limit the sliding rod 24. One end of the cooling tube 2 far from the air collection shell 3 is located below the inverter box 1, and is used to blow the air and water discharged from the cooling tube 2 towards the ground below the inverter box 1.

[0054] In the above solution, it aims to limit the sliding rod 24 so that the sliding rod 24 will not reciprocate due to normal temperature fluctuations. The third spring between the second limiting column 25 and the gas storage shell 23 is initially in a compressed state. The second limiting column 25 consists of a cylinder and a hemisphere, and the depth of the second groove on the sliding rod 24 is less than the radius of the hemisphere of the second limiting column 25.

[0055] Working process: When the temperature of the inverter box 1 is too high due to reasons such as excessively high ambient temperature, the temperature of the inverter box 1 rises, and the temperature of the thermal expansion gas in the gas storage shell 23 rises and expands, thereby increasing the gas pressure therein. When the gas pressure rises to a level that can push the sliding rod 24, the sliding rod 24 moves to the right and squeezes the second limiting column 25. The second limiting column 25 moves upward and compresses the adjacent third spring. The sliding rod 24 pushes the second sliding column 22 to move to the right, and the second sliding column 22 releases the third hard tube 18 and the fourth hard tube 18. The hard tube 20 is blocked, so that the two are connected through the second connecting shell 19. At this time, the speed of the wind flow in the cooling pipe 2 is greater than the speed of the wind flow at the connection between the water collecting tank 101 and the fifth hard tube 21. According to Bernoulli's principle, the faster the flow rate, the lower the pressure. At this time, the water in the water collecting shell 17 is sucked into the cooling pipe 2 through the third hard tube 18, the second connecting shell 19 and the fourth hard tube 20. At this time, due to the fast wind flow speed in the cooling pipe 2 and the small amount of water entering the cooling pipe 2, the water is blown into water mist by the wind flow and moves with the wind flow. The water mist moves During the cooling process, the water mist adheres to the inner wall of the cooling pipe 2, thereby absorbing the heat on the cooling pipe 2. The fine water mist evaporates and is carried away by the wind, and is finally discharged from the bottom of the cooling pipe 2, thereby improving the heat dissipation capacity of the inverter box 1 and keeping the temperature of the inverter box 1 stable. When the amount of water entering the cooling pipe 2 is more than the water mist required to absorb heat, the excess water is discharged from the bottom of the cooling pipe 2 and drips onto the ground below the inverter box 1, thereby cooling the ground near the inverter box 1 and reducing the temperature around the inverter box 1. Due to the heat of the environment, after the temperature of the inverter box 1 returns to normal, the thermally expanded gas in the gas storage shell 23 contracts, causing the sliding rod 24 to move to the left. At the same time, the sliding rod 24 drives the second sliding column 22 to move to the left, so that the second sliding column 22 blocks the second connecting shell 19. After the sliding rod 24 is reset, the second limiting column 25 is inserted into the second groove of the sliding rod 24 under the action of the third spring. At this time, the second sliding column 22 is reset, blocking the connection between the third hard tube 18 and the fourth hard tube 20 and the second connecting shell 19.

[0056] The above description is merely an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention are intended to be included within the scope of protection of the present invention. Any content not elaborated in detail herein is already known to those skilled in the art.

Claims

1. Photovoltaic inverter protection device, characterized in that, Includes: An inverter case (1), the inverter case (1) being provided with a cooling pipe (2), the inverter case (1) being fixedly connected to an air collecting housing (3) in communication with the cooling pipe (2), the air collecting housing (3) being fixedly connected to a motor (4), and the output shaft of the motor (4) being fixedly connected to a blade fan (5); A bird-repelling member (6) is fixedly connected to the upper side of the inverter housing (1); a first hard tube (7) connected to the wind collecting shell (3), the first hard tube (7) being connected to a first connecting shell (8), the first connecting shell (8) being connected to a second hard tube (9), the second hard tube (9) being connected to a blowing shell (10), the blowing shell (10) being used to blow wind toward the bird-repelling member (6); a first sliding column (11) slidably connected to the first connecting shell (8), the first sliding column (11) being used to control the connection and closing of the first hard tube (7) and the second hard tube (9); A fixed shell (12) is fixedly connected to the upper side of the inverter box (1), the fixed shell (12) is slidably connected to a sliding member (13), and a first spring is provided between the sliding member (13) and the fixed shell (12); A movable plate (14) is fixed to the sliding member (13), the movable plate (14) is fitted with the bird-repelling member (6), and the movable plate (14) is fixed with a connecting rod (15), and the connecting rod (15) passes through the first connecting shell (8) and is fixed to the first sliding column (11).

2. The photovoltaic inverter protection device according to claim 1, characterized in that: The blowing shell (10) is located between the movable plate (14) and the bird-repelling member (6).

3. The photovoltaic inverter protection device according to claim 1, characterized in that: Also included are: A first limiting column (16) is slidably connected to the first connecting shell (8); a second spring is provided between the first limiting column (16) and the first connecting shell (8); the first sliding column (11) is provided with a first groove; the first limiting column (16) is inserted into the first groove to limit the first sliding column (11).

4. The photovoltaic inverter protection device according to claim 1, characterized in that: Also included are: A water collecting shell (17) is fixedly connected to the inverter housing (1), the water collecting shell (17) is connected to a third hard pipe (18), and the third hard pipe (18) is connected to a second connecting shell (19); A fourth hard tube (20) is connected to the cooling tube (2), the fourth hard tube (20) is connected to the second connecting shell (19), the inverter box (1) is provided with a water collecting trough (101), the projections of the movable plate (14) and the bird-repelling member (6) on the horizontal plane are both smaller than the projection of the water collecting trough (101) on the horizontal plane, and the water collecting shell (17) and the water collecting trough (101) are connected via a fifth hard tube (21).

5. The photovoltaic inverter protection device according to claim 4, characterized in that: Also included are: A second sliding column (22) is slidably connected in the second connecting shell (19), and the second sliding column (22) is used to control the connection and closing of the third hard tube (18) and the fourth hard tube (20).

6. The photovoltaic inverter protection device according to claim 5, characterized in that: Also included are: A gas storage shell (23) is fixedly connected to the inverter housing (1), and the gas storage shell (23) is filled with thermal expansion gas; A sliding rod (24) is slidably connected to the gas storage shell (23), and the sliding rod (24) passes through the second connecting shell (19) and is fixedly connected to the second sliding column (22).

7. The photovoltaic inverter protection device according to claim 6, characterized in that: Also included are: A second limiting column (25) is slidably connected to the gas storage shell (23); a third spring is provided between the second limiting column (25) and the gas storage shell (23); the sliding rod (24) is provided with a second groove; the second limiting column (25) is inserted into the second groove to limit the sliding rod (24).

8. The photovoltaic inverter protection device according to claim 7, characterized in that: One end of the cooling pipe (2) away from the air collecting shell (3) is located below the inverter case (1) and is used to blow the air and water discharged from the cooling pipe (2) toward the ground below the inverter case (1).

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