A microgrid voltage protection device

Abstract

The present invention relates to the technical field of microgrid voltage protection, and discloses a microgrid voltage protection device, including a shell and a voltage protector, the outer surfaces of the left and right sides of the shell are fixedly connected with heat dissipation frames, the heat dissipation frame is provided with a drying frame at one end facing the inside of the shell, a partition is fixedly connected at the middle end of the drying frame, a desiccant is provided inside the mesh box, and a plurality of heating tubes are provided inside the left and right ends of the U-shaped drying box. Heat is dissipated through the heat dissipation frame, air enters the inside of the shell through the heat dissipation frame, moisture in the air is removed by the desiccant, and the position of the drying frame is adjusted, and the desiccant is dried by the U-shaped drying box and reused, so that moisture in the air can be removed to avoid affecting the circuit inside the voltage protector, and the desiccant is convenient to be reused, which increases the convenience of use.

Description

Technical Field

[0001] The present invention relates to the technical field of microgrid voltage protection, and in particular to a microgrid voltage protection device. Background Art

[0002] A microgrid refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices, etc. The purpose of the microgrid is to achieve flexible and efficient application of distributed power sources and solve the problem of grid connection of a large number of distributed power sources in various forms. The development and extension of microgrids can fully promote the large-scale access of distributed power sources and renewable energy, and achieve highly reliable supply of various energy forms to loads. It is an effective way to realize active distribution networks and enable the transition from traditional power grids to smart grids. However, with the promotion and application of microgrids, its internal voltage protection has become a major problem. The voltage cannot maintain a stable output under certain circumstances, resulting in a large amount of heat generated.

[0003] The existing patent (Announcement No.: CN109921374B) discloses a microgrid voltage protection device, including a device body, the bottom of the device body contacts a bearing seat, the top of the bearing seat is welded with a box body with openings at the top and bottom, the top of the bearing seat is provided with an embedding groove, the bottom of the device body is fixedly installed with two embedding plates, the bottom of the embedding plate extends into the embedding groove, two transverse plates are slidably installed in the embedding groove, the two transverse plates are welded with a plurality of cross bars on the side away from each other, the two embedding plates are welded with a plurality of cross bar grooves on the side close to each other, the cross bars are clamped with the cross bar grooves, the bottom inner wall of the embedding groove is provided with a vertical hole, a vertical plate is slidably installed in the vertical hole, and one end of the oblique rod is hinged on both sides of the vertical plate. The present invention has a simple structure, is easy to use, fixes the device body, and has good stability after fixation, and can facilitate the heat dissipation of the device body, meeting the use needs of users.

[0004] Most of the existing technologies use fans to dissipate heat from the protection device. However, during the actual cooling process, moisture may exist in the air. The moisture enters the protection device through the heat dissipation port along with the air and affects its internal circuits, thus affecting the use of the protection device. Therefore, a microgrid voltage protection device is proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a microgrid voltage protection device to solve the problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a microgrid voltage protection device, comprising a shell and a voltage protector, the left and right outer surfaces of the shell are fixedly connected with heat dissipation frames, the end of the heat dissipation frame facing the inside of the shell is provided with a drying frame, the middle end of the drying frame is fixedly connected with a partition, the bottom inner surface of the drying frame and the top outer surface of the partition are provided with placement grooves, the inside of the placement groove is provided with a mesh box, the inside of the mesh box is provided with a desiccant, the left and right inner surfaces of the shell are fixedly connected with two symmetrically arranged U-shaped drying boxes, and the left and right ends of the U-shaped drying box are provided with a plurality of heating pipes;

[0007] The opposite inner surfaces on the left and right sides of the shell are rotatably connected with a transmission shaft near the rear end, a second motor (not shown in the figure) is fixedly installed on the left outer surface of the shell, and the output end of the second motor is fixedly connected to the transmission shaft, the opposite inner surfaces on the left and right sides of the shell are rotatably connected with support shafts, and the opposite outer surfaces of the two support shafts are fixedly connected with transmission gears, the rear outer surface of the drying frame is fixedly connected with a rack, and the transmission gear is movably engaged with the outer surface of the rack, the outer surface of the transmission shaft and the outer surfaces of the two support shafts are fixedly mounted with transmission wheels, there are two transmission wheels on the transmission shaft, and the transmission wheels on the transmission shaft are respectively located at the left and right ends of the transmission shaft, and belts are wound around the two transmission wheels on the left and the two transmission wheels on the right.

[0008] As a further explanation of the present invention, a temperature sensor is installed on the top inner surface of the outer shell, a mounting plate is installed inside the heat dissipation frame, a first motor is installed on the outer surface of the mounting plate away from the interior of the outer shell, an output end of the first motor is fixedly connected to a rotating shaft, a plurality of heat dissipation fan blades arranged in a circular array are fixedly sleeved on the outer surface of the rotating shaft, a controller is installed inside the outer shell (not shown in the figure), and the controller is electrically connected to the temperature sensor and the first motor.

[0009] As a further explanation of the present invention, a connecting frame is provided at one end of the heat dissipation frame located outside the outer shell, an isolation net is provided inside the connecting frame, the outer surface fixed sleeve of the rotating shaft is provided with a first active bevel gear, a connecting shaft is rotatably connected between the opposite inner surfaces on the front and rear sides of the heat dissipation frame, the outer surface fixed sleeve of the rotating shaft is provided with a first active bevel gear, the outer surface fixed sleeve of the connecting shaft is provided with a first driven bevel gear, the first active bevel gear is movably engaged with the outer surface of the first driven bevel gear, and the outer surface fixed sleeve of the connecting shaft is provided with two toggle rods.

[0010] As a further explanation of the present invention, a fixing seat is fixedly connected to the bottom inner surface of the shell, a box door is provided on the front outer surface of the shell, positive and negative screw rods are rotatably connected between the opposite inner surfaces on the left and right sides of the fixing seat, and the outer surfaces of the positive and negative screw rods are threadedly connected to two threaded plates, and the outer surfaces of the two threaded plates are fixedly connected to slide plates, and the top outer surfaces of the two slide plates are fixedly connected to clamping plates, the voltage protector is arranged between the two clamping plates, and the top outer surface of the fixing seat is provided with a strip groove, and the slide plate is slidably connected to the inside of the strip groove.

[0011] As a further explanation of the present invention, a rotating rod is rotatably penetrated by the front outer surface of the fixed seat, and one end of the rotating rod located on the outer surface of the fixed seat is fixedly connected to a crank, and a second active bevel gear is fixedly sleeved on the end of the rotating rod away from the crank, and a second driven bevel gear is fixedly sleeved on the outer surface of the forward and reverse screw rod, and the second active bevel gear is movably meshed with the outer surface of the second driven bevel gear.

[0012] As a further explanation of the present invention, a slide groove is provided at one end of the heat dissipation frame located inside the shell, and a slide bar is fixedly connected to the outer surface of the drying frame away from the inside of the shell, and the slide bar is slidably connected to the inside of the slide groove.

[0013] As a further illustration of the present invention, one end of the toggle rod away from the connecting shaft is rounded.

[0014] As a further illustration of the present invention, one end of the heat dissipation frame away from the interior of the housing is fixedly connected to a mounting sleeve, and the connection frame is connected to the mounting sleeve by bolts.

[0015] As a further illustration of the present invention, an elastic side strip is arranged at the inner edge of the connection frame, and the isolation net is arranged inside the elastic side strip.

[0016] As a further description of the present invention, the clamping plate is a grid-shaped plate, and an anti-slip pad is provided on the outer surface of the clamping plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In a microgrid voltage protection device provided by the present invention, heat is dissipated through a heat dissipation frame, air enters the interior of the shell through the heat dissipation frame, moisture in the air is removed by a desiccant, and a second motor drives the transmission shaft to rotate, and cooperates with a transmission wheel and a belt to rotate the transmission gear, drive the rack, adjust the position of the drying frame, and then dry the desiccant through a U-shaped drying box for reuse, thereby removing moisture in the air to avoid affecting the circuit inside the voltage protector, and facilitating the reuse of the desiccant, thereby increasing the convenience of use.

[0019] 2. In a microgrid voltage protection device provided by the present invention, the first motor drives the rotating shaft to rotate, thereby driving the first active bevel gear to rotate, and cooperates with the first driven bevel gear to rotate the connecting shaft, thereby driving the toggle rod to rotate. The toggle rod contacts the isolation net, and as the toggle rod rotates, the isolation net is bounced up, causing dust and impurities on its surface to bounce off.

[0020] 3. In a microgrid voltage protection device provided by the present invention, the crank is rotated to drive the rotating rod, and the second active bevel gear and the second driven bevel gear are cooperated to rotate the forward and reverse screws, driving the threaded plate to move the clamping plate, thereby facilitating the disassembly and installation of the voltage protector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view structural schematic diagram of the present invention;

[0022] Figure 2 It is a front view cross-sectional structural schematic diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the heat dissipation frame of the present invention;

[0024] Figure 4 It is a right side cross-sectional structural schematic diagram of the present invention;

[0025] Figure 5 It is a schematic diagram of the drying frame and related structures of the present invention;

[0026] Figure 6 It is a schematic diagram of a top view and cross-sectional structure of the present invention;

[0027] Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle;

[0028] Figure 8 This is a schematic diagram of the structure of a U-shaped drying box of the present invention;

[0029] Fig. 9 It is a schematic diagram of the internal structure of the fixing seat of the present invention.

[0030] In the figure: 1. shell; 2. heat dissipation frame; 3. temperature sensor; 4. first motor; 5. rotating shaft; 6. heat dissipation fan blades; 7. mounting sleeve; 8. connecting frame; 9. isolation net; 10. drying frame; 11. partition; 12. mesh box; 13. U-shaped drying box; 14. heating tube; 15. supporting shaft; 16. rack; 17. transmission gear; 18. first active bevel gear; 19. connecting shaft; 20. first driven bevel gear; 21. toggle lever; 22. fixing seat; 23. voltage protector; 24. forward and reverse screw rods; 25. threaded plate; 26. crank; 27. rotating rod; 28. second active bevel gear; 29. ​​second driven bevel gear; 30. transmission shaft; 31. transmission wheel; 32. clamping plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] Please refer to Figure 1-Figure 8 The present invention provides a technical solution: a microgrid voltage protection device, including a housing 1 and a voltage protector 23, the outer surfaces of the left and right sides of the housing 1 are fixedly connected with a heat dissipation frame 2, the end of the heat dissipation frame 2 facing the inside of the housing 1 is provided with a drying frame 10, the middle end of the drying frame 10 is fixedly connected with a partition 11, the bottom inner surface of the drying frame 10 and the top outer surface of the partition 11 are provided with a placement groove, the inside of the placement groove is provided with a mesh box 12, the inside of the mesh box 12 is provided with a desiccant, the inner surfaces of the left and right sides of the housing 1 are fixedly connected with two symmetrically arranged U-shaped drying boxes 13, and the left and right ends of the U-shaped drying box 13 are provided with a plurality of heating pipes 14. The air is dried by the desiccant inside the mesh box 12, and the moisture in the air is removed, so that the relatively dry air enters the inside of the housing 1, and works through the heating pipe 14 in the U-shaped drying box 13, and the heating pipe 14 generates heat to dry the desiccant in the upper mesh box 12, so that it can be reused.

[0034] The opposite inner surfaces on the left and right sides of the shell 1 are rotatably connected to the rear end with a transmission shaft 30, and a second motor (not shown in the figure) is fixedly installed on the left outer surface of the shell 1, and the output end of the second motor is fixedly connected to the transmission shaft 30. The opposite inner surfaces on the left and right sides of the shell 1 are rotatably connected to the support shafts 15, and the opposite outer surfaces of the two support shafts 15 are fixedly connected to the transmission gears 17. The outer surface of the rear side of the drying frame 10 is fixedly connected to the rack 16, and the transmission gear 17 is movably engaged with the outer surface of the rack 16. The outer surface of the transmission shaft 30 and the outer surfaces of the two support shafts 15 are fixedly covered with transmission wheels 31. There are two transmission wheels 31 on the transmission shaft 30, and the transmission wheels 31 on the transmission shaft 30 are respectively located at the left and right ends of the transmission shaft 30, and belts are wound around the two left transmission wheels 31 and the two right transmission wheels 31. The second motor drives the transmission shaft 30 to rotate, and drives the two transmission wheels 31 thereon to rotate, and drives the other two transmission wheels 31 to rotate under the action of the belt, so that the support shaft 15 rotates, and the support shaft 15 drives the transmission gear 17 to rotate, and the transmission gear 17 engages with the rack 16, so that the rack 16 drives the drying frame 10 to move.

[0035] A temperature sensor 3 is installed on the top inner surface of the housing 1, a mounting plate is installed inside the heat dissipation frame 2, a first motor 4 is installed on the outer surface of the mounting plate away from the inside of the housing 1, a rotating shaft 5 is fixedly connected to the output end of the first motor 4, a plurality of heat dissipation blades 6 arranged in a circumferential array are fixedly sleeved on the outer surface of the rotating shaft 5, a controller (not shown in the figure) is installed inside the housing 1, and the controller is electrically connected to the temperature sensor 3 and the first motor 4. When the voltage protector 23 works, the heat generated is naturally dissipated through the heat dissipation frame 2. When more heat is generated, the temperature sensor 3 senses that the temperature inside the housing 1 is at a certain value, and sends a signal to the controller. The controller receives the signal and sends a signal to the first motor 4, and the first motor 4 drives the rotating shaft 5 to rotate and drives the heat dissipation blades 6 to rotate for rapid heat dissipation.

[0036] A slide groove is provided at one end of the heat dissipation frame 2 located inside the housing 1, and a slide bar is fixedly connected to the outer surface of the drying frame 10 away from the inside of the housing 1, and the slide bar is slidably connected to the inside of the slide groove. When the drying frame 10 moves, the slide bar slides inside the slide groove, so that the drying frame 10 can stably move in a straight line.

[0037] During the specific implementation process, the voltage protector 23 works, and the generated heat is naturally dissipated through the heat dissipation frame 2. When more heat is generated, the temperature sensor 3 senses that the temperature inside the shell 1 is at a certain value, and sends a signal to the controller. The controller receives the signal and sends a signal to the first motor 4. The first motor 4 drives the shaft 5 to rotate and drives the heat dissipation fan blades 6 to rotate for rapid heat dissipation. The air with a lower external temperature enters the shell 1 through the heat dissipation frame 2. The air is dried by the desiccant inside the mesh box 12 to remove moisture from the air, so that relatively dry air enters the shell 1. After the desiccant has been used for a period of time, the second motor is turned on. The second motor drives the transmission shaft 30 to rotate, and drives the two transmission wheels 31 thereon to rotate. Under the action of the belt, the other two transmission wheels 31 are driven to rotate, so that the support shaft 15 rotates, and the support shaft 15 drives the transmission gear 17 to rotate, and the transmission gear 1 7 is meshed with the rack 16, so that the rack 16 drives the drying frame 10 to move, and the mesh box 12 near the top is moved into the U-shaped drying box 13 above. At this time, the mesh box 12 below is moved to the position corresponding to the drying frame 10, and the desiccant in the mesh box 12 below is dried, and the heating tube 14 in the U-shaped drying box 13 is operated. The heating tube 14 generates heat to dry the desiccant in the mesh box 12 above, so that it can be reused. After the desiccant below is used for a period of time, the second motor is reversely driven to drive the mesh box 12 above to correspond to the drying frame 10, so that the desiccant above is dried, so as to be cyclically reused. When the desiccant cannot be used normally, it is replaced, so as to remove moisture in the air, avoid its influence on the circuit inside the voltage protector 23, and facilitate the reuse of the desiccant, thereby increasing the convenience of use.

[0038] Embodiment 2:

[0039] Please refer to Figure 3 The present invention provides a technical solution: a connecting frame 8 is provided at one end of the heat dissipation frame 2 located outside the shell 1, an isolation net 9 is provided inside the connecting frame 8, a first active bevel gear 18 is fixedly sleeved on the outer surface of the rotating shaft 5, a connecting shaft 19 is rotatably connected between the opposite inner surfaces on the front and rear sides of the heat dissipation frame 2, a first active bevel gear 18 is fixedly sleeved on the outer surface of the rotating shaft 5, a first driven bevel gear 20 is fixedly sleeved on the outer surface of the connecting shaft 19, the first active bevel gear 18 is movably meshed with the outer surface of the first driven bevel gear 20, and two toggle rods 21 are fixedly sleeved on the outer surface of the connecting shaft 19.

[0040] The end of the toggle rod 21 away from the connecting shaft 19 is rounded to avoid the toggle rod 21 causing damage to the isolation net 9 when the toggle rod 21 contacts the isolation net 9.

[0041] The end of the heat dissipation frame 2 away from the inside of the housing 1 is fixedly connected with a mounting sleeve 7, and the connecting frame 8 is connected to the mounting sleeve 7 by bolts. By unscrewing the bolts, the connecting frame 8 can be removed to clean or replace the isolation net 9.

[0042] The inner edge of the connecting frame 8 is provided with an elastic side strip, and the isolation net 9 is arranged inside the elastic side strip. Under the action of the elastic side strip, when the isolation net 9 is propped up by the toggle rod 21, the elastic side strip can be deformed.

[0043] During the specific implementation process, when air enters the heat dissipation frame 2, impurities in the air are removed through the isolation net 9. When the first motor 4 drives the rotating shaft 5 to drive the heat dissipation fan blades 6 to rotate for auxiliary heat dissipation, the rotating shaft 5 drives the first active bevel gear 18 to rotate, and the first active bevel gear 18 is meshed with the first driven bevel gear 20. The first active bevel gear 18 makes the first driven bevel gear 20 rotate, and the first driven bevel gear 20 makes the connecting shaft 19 rotate. When the connecting shaft 19 rotates, it drives the toggle rod 21 to rotate. When the toggle rod 21 rotates to contact the isolation net 9, the elastic side strip is elastically deformed. When the toggle rod 21 is detached from the surface of the isolation net 9, the elastic side strip drives the isolation net 9 to reset. In this process, the isolation net 9 will be bounced up to a certain extent, so that the dust adhered to the isolation net 9 is bounced off, so that the isolation net 9 can be cleaned, and there is no need to disassemble it for cleaning.

[0044] Embodiment 3:

[0045] Please refer to Figure 2 and Fig. 9 The present invention provides a technical solution: a fixing seat 22 is fixedly connected to the bottom inner surface of the housing 1, a box door is provided on the front outer surface of the housing 1, a positive and negative screw rod 24 is rotatably connected between the opposite inner surfaces on the left and right sides of the fixing seat 22, two threaded plates 25 are threadedly connected to the outer surface of the positive and negative screw rod 24, a slide plate is fixedly connected to the outer surface of the two threaded plates 25, a clamping plate 32 is fixedly connected to the top outer surface of the two slide plates, a voltage protector 23 is arranged between the two clamping plates 32, a strip groove is provided on the top outer surface of the fixing seat 22, and the slide plate is slidably connected to the inside of the strip groove. The rotation of the positive and negative screw rod 24 causes the two threaded plates 25 to move to both sides inside the strip groove, causing the clamping plate 32 to detach from the surface of the voltage protector 23, thereby removing the voltage protector 23 for maintenance, which improves the efficiency of installation and disassembly compared to fixing with multiple bolts.

[0046] A rotating rod 27 is rotatably penetrated through the outer surface of the front side of the fixing seat 22, and one end of the rotating rod 27 located on the outer surface of the fixing seat 22 is fixedly connected to a crank 26, and a second driving bevel gear 28 is fixedly sleeved on the end of the rotating rod 27 away from the crank 26, and a second driven bevel gear 29 is fixedly sleeved on the outer surface of the forward and reverse screw rod 24, and the second driving bevel gear 28 is movably meshed with the outer surface of the second driven bevel gear 29. When the crank 26 is rotated, the crank 26 drives the rotating rod 27 to rotate the second driving bevel gear 28, and the rotation of the second driving bevel gear 28 drives the second driven bevel gear 29 to rotate, so that the forward and reverse screw rod 24 rotates.

[0047] The clamping plate 32 is a grid plate, and an anti-skid pad is provided on the outer surface of the clamping plate 32. The grid plate facilitates heat dissipation of the voltage protector 23 body, and the anti-skid pad increases the friction between the clamping plate 32 and the voltage protector 23.

[0048] During the specific implementation process, when the voltage protector 23 needs to be disassembled for maintenance, the box door is opened and the crank 26 is turned. The crank 26 drives the rotating rod 27 to rotate the second active bevel gear 28. The rotation of the second active bevel gear 28 drives the second driven bevel gear 29 to rotate, so that the forward and reverse screw rods 24 rotate. The rotation of the forward and reverse screw rods 24 causes the two threaded plates 25 to move to both sides, so that the clamping plate 32 is detached from the surface of the voltage protector 23, thereby removing the voltage protector 23 for maintenance. Compared with fixing with multiple bolts, the efficiency of installation and disassembly is improved.

[0049] Working principle: During actual use of the present invention, the voltage protector 23 works, and the generated heat is naturally dissipated through the heat dissipation frame 2. When more heat is generated, the temperature sensor 3 senses that the temperature inside the shell 1 is at a certain value, and sends a signal to the controller. The controller receives the signal and sends a signal to the first motor 4. The first motor 4 drives the rotating shaft 5 to rotate and drives the heat dissipation fan blades 6 to rotate for rapid heat dissipation. Air with a lower external temperature enters the shell 1 through the heat dissipation frame 2. The air is dried by the desiccant inside the mesh box 12 to remove moisture from the air, so that relatively dry air enters the shell 1. After the desiccant has been used for a period of time, the second motor is turned on. The second motor drives the transmission shaft 30 to rotate, and drives the two transmission wheels 31 thereon to rotate. Under the action of the belt, the other two transmission wheels 31 are driven to rotate, so that the support shaft 15 rotates, and the support shaft 15 drives the transmission gear 17 to rotate. The movable gear 17 is meshed with the rack 16, so that the rack 16 drives the drying frame 10 to move, and moves the mesh box 12 on the top to the U-shaped drying box 13 on the top. At this time, the mesh box 12 on the bottom moves to the position corresponding to the drying frame 10, and the desiccant in the mesh box 12 on the bottom is dried. The heating tube 14 in the U-shaped drying box 13 works, and the heating tube 14 generates heat to dry the desiccant in the mesh box 12 on the top, so that it can be reused. After the desiccant on the bottom has been used for a period of time, the second motor is reversely driven to drive the mesh box 12 on the top to correspond to the drying frame 10, so that the desiccant on the top is dried, so as to be cyclically reused. When the desiccant cannot be used normally, it is replaced, so as to remove moisture in the air, avoid its influence on the circuit inside the voltage protector 23, and facilitate the reuse of the desiccant, thereby increasing the convenience of use.

[0050] When air enters the heat dissipation frame 2, impurities in the air are removed through the isolation net 9. When the first motor 4 drives the rotating shaft 5 to drive the heat dissipation fan blades 6 to rotate for auxiliary heat dissipation, the rotating shaft 5 drives the first active bevel gear 18 to rotate, and the first active bevel gear 18 is meshed with the first driven bevel gear 20. The first active bevel gear 18 makes the first driven bevel gear 20 rotate, and the first driven bevel gear 20 makes the connecting shaft 19 rotate. When the connecting shaft 19 rotates, it drives the toggle rod 21 to rotate. When the toggle rod 21 rotates to contact the isolation net 9, the elastic side strip is elastically deformed. When the toggle rod 21 is detached from the surface of the isolation net 9, the elastic side strip drives the isolation net 9 to reset. In this process, the isolation net 9 will be bounced up to a certain extent, so that the dust adhered to the isolation net 9 is bounced off, so that the isolation net 9 can be cleaned, and there is no need to disassemble it for cleaning.

[0051] When the voltage protector 23 needs to be disassembled for maintenance, the box door is opened and the crank 26 is turned. The crank 26 drives the rotating rod 27 to rotate the second active bevel gear 28. The rotation of the second active bevel gear 28 drives the second driven bevel gear 29 to rotate, so that the forward and reverse screw rods 24 rotate. The rotation of the forward and reverse screw rods 24 causes the two threaded plates 25 to move to both sides, so that the clamping plate 32 is detached from the surface of the voltage protector 23, so that the voltage protector 23 can be removed for maintenance. Compared with fixing with multiple bolts, the efficiency of installation and disassembly is improved.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microgrid voltage protection device, comprising a housing (1) and a voltage protector (23), characterized in that: The left and right outer surfaces of the shell (1) are both fixedly connected to heat dissipation frames (2); a drying frame (10) is provided at one end of the heat dissipation frame (2) facing the inside of the shell (1); a partition (11) is fixedly connected to the middle end of the drying frame (10); a placement groove is provided on the bottom inner surface of the drying frame (10) and the top outer surface of the partition (11); a mesh box (12) is provided inside the placement groove; a desiccant is provided inside the mesh box (12); two symmetrically arranged U-shaped drying boxes (13) are fixedly connected to the left and right inner surfaces of the shell (1); a plurality of heating pipes (14) are provided inside the left and right ends of the U-shaped drying box (13); The inner surfaces on the left and right sides of the housing (1) are rotatably connected to a transmission shaft (30) near the rear end. A second motor is fixedly mounted on the left outer surface of the housing (1). The output end of the second motor is fixedly connected to the transmission shaft (30). The inner surfaces on the left and right sides of the housing (1) are rotatably connected to support shafts (15). The outer surfaces on the two sides of the support shafts (15) are fixedly connected to transmission gears (17). The outer surface on the rear side of the drying frame (10) is fixedly connected to a rack (16). The transmission gear (17) is movably meshed with the outer surface of the rack (16). The outer surface of the transmission shaft (30) and the outer surfaces of the two support shafts (15) are both fixedly sleeved with transmission wheels (31). There are two transmission wheels (31) on the transmission shaft (30), and the transmission wheels (31) on the transmission shaft (30) are respectively located at the left and right ends of the transmission shaft (30). Belts are wound around the two transmission wheels (31) on the left and the two transmission wheels (31) on the right.

2. A microgrid voltage protection device according to claim 1, characterized in that: A temperature sensor (3) is installed on the top inner surface of the shell (1); a mounting plate is installed inside the heat dissipation frame (2); a first motor (4) is installed on the outer surface of the mounting plate away from the inside of the shell (1); a rotating shaft (5) is fixedly connected to the output end of the first motor (4); a plurality of heat dissipation blades (6) arranged in a circular array are fixedly sleeved on the outer surface of the rotating shaft (5); a controller is installed inside the shell (1); the controller is electrically connected to the temperature sensor (3) and the first motor (4).

3. A microgrid voltage protection device according to claim 2, characterized in that: A connection frame (8) is provided at one end of the heat dissipation frame (2) located outside the housing (1); an isolation net (9) is provided inside the connection frame (8); a first active bevel gear (18) is fixedly sleeved on the outer surface of the rotating shaft (5); a connection shaft (19) is rotatably connected between the inner surfaces of the front and rear sides of the heat dissipation frame (2); a first driven bevel gear (20) is fixedly sleeved on the outer surface of the connection shaft (19); the first active bevel gear (18) is movably meshed with the outer surface of the first driven bevel gear (20); and two toggle rods (21) are fixedly sleeved on the outer surface of the connection shaft (19).

4. A microgrid voltage protection device according to claim 1, characterized in that: The bottom inner surface of the shell (1) is fixedly connected to a fixing seat (22), the front outer surface of the shell (1) is provided with a box door, the left and right opposite inner surfaces of the fixing seat (22) are rotatably connected with positive and negative screw rods (24), the outer surfaces of the positive and negative screw rods (24) are threadedly connected to two threaded plates (25), the outer surfaces of the two threaded plates (25) are fixedly connected to a slide plate, the top outer surfaces of the two slide plates are fixedly connected to a clamping plate (32), the voltage protector (23) is arranged between the two clamping plates (32), the top outer surface of the fixing seat (22) is provided with a strip groove, and the slide plate is slidably connected to the inside of the strip groove.

5. A microgrid voltage protection device according to claim 4, characterized in that: A rotating rod (27) is rotatably penetrated through the front outer surface of the fixing seat (22); one end of the rotating rod (27) located on the outer surface of the fixing seat (22) is fixedly connected to a crank (26); an end of the rotating rod (27) away from the crank (26) is fixedly sleeved with a second active bevel gear (28); an outer surface of the forward and reverse screw rod (24) is fixedly sleeved with a second driven bevel gear (29); the second active bevel gear (28) is movably meshed with the outer surface of the second driven bevel gear (29).

6. A microgrid voltage protection device according to claim 1, characterized in that: A slide groove is provided at one end of the heat dissipation frame (2) located inside the shell (1), and a slide bar is fixedly connected to the outer surface of the drying frame (10) away from the inside of the shell (1), and the slide bar is slidably connected to the inside of the slide groove.

7. A microgrid voltage protection device according to claim 3, characterized in that: The end of the toggle rod (21) away from the connecting shaft (19) is arranged with a rounded corner.

8. A microgrid voltage protection device according to claim 3, characterized in that: One end of the heat dissipation frame (2) away from the interior of the housing (1) is fixedly connected to a mounting sleeve (7), and the connection frame (8) is connected to the mounting sleeve (7) via bolts.

9. A microgrid voltage protection device according to claim 3, characterized in that: The inner edge of the connection frame (8) is provided with an elastic side strip, and the isolation net (9) is arranged inside the elastic side strip.

10. A microgrid voltage protection device according to claim 4, characterized in that: The clamping plate (32) is a grid-shaped plate, and an anti-slip pad is provided on the outer surface of the clamping plate (32).

Images