Lightning protection device for transformer

Abstract

The invention discloses a transformer lightning protection device, and relates to the technical field of transformer lightning protection. The device comprises a bottom plate, a transformer is fixedly connected to the middle of the upper end face of the bottom plate, a lightning protection cage is fixedly connected to the upper end face of the bottom plate and located on the rear portion of the transformer, a connecting structure is fixedly connected to the outer side of the lower end face of the bottom plate, side lightning protection structures are arranged on the left side and the right side of an inner cavity of the connecting structure, and a front-end lightning protection structure is arranged on the front portion of the inner cavity of the connecting structure. A fixing structure is arranged in the middle of the front end face of the lightning protection cage, turnover driving structures are symmetrically arranged in the middle of the lower end face of the bottom plate, and a driving structure is arranged at the position, between the two turnover driving structures, of the lower end face of the bottom plate. The electrostatic shielding and charge shielding effects are utilized, the influence of an external electric field is neutralized, and an area with extremely low electric field intensity or even close to zero is formed in the cage body, so that the transformer is effectively prevented from being struck by lightning, and the safety of the transformer is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning protection for transformers, and particularly to a lightning protection device for transformers. Background Art

[0002] A transformer is a static electrical device used to transform AC voltage and current and transmit AC electrical energy. It realizes the transmission of electrical energy based on the principle of electromagnetic induction. Transformers can be classified into power transformers, test transformers, instrument transformers, and transformers for special purposes according to their uses: Power transformers are essential equipment for power transmission and distribution and power user distribution; Test transformers are equipment for performing withstand voltage (boosting voltage) tests on electrical equipment; Instrument transformers are used for electrical measurement and relay protection in the power distribution system (PT, CT); Special-purpose transformers include electric furnace transformers for smelting, welding transformers, rectifier transformers for electrolysis, small voltage regulating transformers, etc.

[0003] After retrieval, a Chinese invention patent discloses a lightning protection device for a transformer with a publication number of CN115020090B, which specifically includes: a positioning plate having a rectangular structure, and an insulating block provided at the bottom of the positioning plate. The top of the insulating block is fixedly connected to the bottom of the positioning plate, and the bottom of the insulating block is fixedly connected to the transformer housing; a water storage tank having a triangular structure, and a support device provided inside the water storage tank. The top of the support device penetrates through the water storage tank and is fixedly connected to a lightning protection device. A water storage hole is provided on the side of the top of the water storage tank, and the bottom of the water storage tank is fixedly connected to the top of the positioning plate. The present invention relates to the technical field of transformers. This lightning protection device for a transformer can conveniently prevent the charges in the cloud from forming lightning and hitting the transformer, and when lightning accidentally hits, it can prevent the lightning current from affecting the transformer and the power supply line, with good safety, and can prevent the lightning protection device from shaking driven by the wind, with good stability.

[0004] When the existing lightning protection device needs to repair the transformer, it often requires manual removal of the entire lightning protection device or complex disassembly operations, which not only takes time and effort but also increases the operation risk. At the same time, the existing lightning protection device only focuses on the lightning protection effect and ignores electromagnetic shielding, or it is difficult to achieve good lightning protection and electromagnetic shielding effects simultaneously.

[0005] Therefore, the existing lightning protection device for transformers cannot meet the requirements in actual use, so there is an urgent need for improved technology on the market to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a lightning protection device for transformers, which solves the problems raised in the above background art through the following settings.

[0007] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention relates to a lightning protection device for a transformer, which includes a bottom plate. In the middle of the upper end surface of the bottom plate, a transformer is fixedly connected. At the rear of the transformer on the upper end surface of the bottom plate, a lightning protection cage is fixedly connected. On the outer side of the lower end surface of the bottom plate, a connection structure is fixedly connected. On the left and right sides of the inner cavity of the connection structure, side lightning protection structures are arranged. In the front part of the inner cavity of the connection structure, a front-end lightning protection structure is arranged. In the middle of the front end surface of the lightning protection cage, a fixing structure is arranged. On one side of each of the two side lightning protection structures away from the lightning protection cage, a flipping and adjusting structure is arranged. On the left and right sides between the two flipping and adjusting structures, a transmission structure is arranged. Symmetrically arranged in the middle of the lower end surface of the bottom plate are flipping driving structures. Between the two flipping driving structures on the lower end surface of the bottom plate, a driving structure is arranged; In the middle of the upper end surface of the bottom plate, a transformer body is fixedly connected, and heat dissipation fins are uniformly fixedly connected to the outer surface of the transformer body.

[0008] Preferably, the lightning protection cage includes mounting columns 1 uniformly fixedly connected to the rear part of the upper end surface of the bottom plate. Between two adjacent mounting columns 1, conductive crossbars 1 are uniformly fixedly connected. On the upper end surface of the mounting column 1, a mounting crossbar is fixedly connected. In the inner cavity of the mounting crossbar, conductive crossbars 1 are uniformly fixedly connected. On the front end surface of the mounting crossbar, a fixing structure is arranged. In the middle of the left and right side end faces of the mounting crossbar, clamping grooves are formed.

[0009] Preferably, the connection structure includes connection columns fixedly connected to the four corners of the lower end surface of the bottom plate. At the corner of the upper end surface of the connection column away from the bottom plate, a connection block is fixedly connected. Between two longitudinal connection blocks, a longitudinal rotating shaft is rotatably connected. Between two transverse connection blocks, a transverse rotating shaft is rotatably connected.

[0010] Preferably, the side lightning protection structure includes side connection columns uniformly fixedly connected to the outer surface of the longitudinal rotating shaft. On the upper end surface of the side connection column, a side crossbar is fixedly connected. Between two adjacent side connection columns, side conductive bars are uniformly fixedly connected. Between the two side crossbars, clamping blocks that are mutually matched with the clamping grooves on the mounting crossbar are respectively fixedly connected.

[0011] Preferably, the front-end lightning protection structure includes front-end support rods uniformly fixedly connected to the outer surface of the transverse rotating shaft. On the upper end surface of the front-end support rod, a front-end crossbar is fixedly connected. Between two adjacent front-end crossbars, front-end conductive crossbars are uniformly fixedly connected. In the middle of the front end surface of the front-end crossbar, a pulling handle is fixedly connected.

[0012] Preferably, the fixing structure includes a fixing claw fixedly connected to the middle of the rear end face of the front cross bar. A limit card slot is provided in the middle of the front end face of the mounting cross bar. A limit structure is arranged in the inner cavity of the limit card slot. The fixing claw is clamped in the inner cavity of the limit card slot. A limit sliding slot is provided in the middle of the upper end face of the limit card slot. The limit structure includes a limit card plate slidably connected to the inner cavity of the limit sliding slot. A groove matching the limit card plate is provided on the upper end face of the fixing claw. A lifting plate is fixedly connected to the upper end face of the limit card plate. Springs are respectively connected between the left and right sides of the lower end face of the lifting plate and the mounting cross bar in a transmission manner.

[0013] Preferably, the flipping and adjusting structure includes flipping rods symmetrically and fixedly connected to the side away from the bottom plate of the side connecting columns. An adjusting shaft is rotatably connected between the two flipping rods. Adjusting connecting rods are uniformly and fixedly connected to the outer surface of the adjusting shaft. A transmission structure is arranged at the end of the adjusting connecting rod away from the adjusting shaft.

[0014] Preferably, the transmission structure is a transmission shaft rotatably connected to the ends of the adjacent two adjusting connecting rods away from the adjusting shaft. A transmission block is fixedly connected to the middle of the outer surface of the transmission shaft. A transmission plate is fixedly connected to the end of the transmission block away from the transmission shaft. A flipping driving structure is arranged between the two transmission plates on the lower end face of the bottom plate.

[0015] Preferably, the flipping driving structure includes rotating frames symmetrically and fixedly connected to the lower end face of the bottom plate. A threaded sleeve is rotatably connected to the inner cavity of the rotating frame. Threaded rods are symmetrically and threadedly connected to the inner cavity of the threaded sleeve. The ends of the two threaded rods away from the threaded sleeve are respectively fixedly connected to the transmission plates on both sides of the threaded sleeve. A driving structure is arranged between the two threaded sleeves on the lower end face of the bottom plate.

[0016] Preferably, the driving structure includes transmission gears fixedly connected to the middle of the outer surfaces of the two threaded sleeves. A toothed belt is connected to the outer surfaces of the two transmission gears in a transmission manner. A driving gear is meshed in the middle of the inner cavity of the toothed belt. A driving motor is fixedly connected to the middle of the lower end face of the bottom plate. The output end of the driving motor is fixedly connected to the driving gear.

[0017] The present invention has the following beneficial effects: 1. The Faraday cage structure composed of the lightning protection cage, the side lightning protection structure and the front lightning protection structure in the present invention uses the electrostatic shielding and charge shielding effects during lightning strikes to neutralize the influence of the external electric field, forming a region with extremely low or even close to zero electric field intensity inside the cage body, thereby effectively preventing the transformer from being struck by lightning and ensuring the safety of the transformer. At the same time, the setting of the Faraday cage not only provides lightning protection, but also realizes electromagnetic shielding of the transformer, reducing the influence of external electromagnetic interference on the operation of the transformer and enabling the transformer to operate safely and stably.

[0018] 2. By starting the driving structure of the present invention, the left and right sides of the lightning protection cage can be opened, facilitating personnel to perform maintenance on the transformer when maintenance is required, improving work efficiency and safety. Furthermore, by pulling or pushing the pulling handle in the reverse direction, the front lightning protection structure can be conveniently separated from or tightly fixed to the lightning protection cage, further enhancing the flexibility and operability of the device. Through the forward and reverse rotation control of the driving motor, the left and right sides of the lightning protection cage can be automatically closed and opened without manual operation, improving the automation degree and convenience of the device. At the same time, since the driving motor is a variable-frequency bidirectional motor, it can limit the rotated flipping driving structure to ensure the stability of the lightning protection cage in the closed or open state, preventing accidental movement or damage of the device due to external forces or other factors.

[0019] Of course, not necessarily all the advantages described above need to be achieved simultaneously when implementing any product of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings without creative efforts based on these drawings.

[0021] Figure 1 is the front view three-dimensional structure schematic diagram of the present invention; Figure 2 is the bottom view three-dimensional structure schematic diagram of the present invention; Figure 3 is the longitudinal half-sectional structure schematic diagram of the present invention; Figure 4 is the transverse half-sectional structure schematic diagram of the present invention; Figure 5 is the present invention Figure 2 the enlarged structure schematic diagram of area A in; Figure 6 is the present invention Figure 3 the enlarged structure schematic diagram of area B in.

[0022] In the drawings, the list of components represented by each reference numeral is as follows: 1. Bottom plate; 2. Transformer; 21. Transformer body; 22. Heat sink; 3. Lightning protection cage; 31. Installation support one; 32. Conductive crossbar one; 33. Installation crossbar; 4. Connection structure; 41. Connection column; 42. Connection block; 43. Longitudinal rotation shaft; 44. Transverse rotation shaft; 5. Side lightning protection structure; 51. Side connection column; 52. Side crossbar; 53. Side conductive rod; 54. Clamping block; 6. Front-end lightning protection structure; 61. Front-end support rod; 62. Front-end crossbar; 63. Front-end conductive crossbar; 64. Pulling handle; 7. Fixing structure; 71. Fixing claw; 72. Limit card slot; 73. Limiting structure; 731. Limit card plate; 732. Lifting plate; 733. Spring; 8. Flip adjustment structure; 81. Flip rod; 82. Adjustment shaft; 83. Adjustment link; 9. Transmission structure; 91. Transmission shaft; 92. Transmission block; 93. Transmission plate; 10. Flip drive structure; 101. Rotating frame; 102. Threaded sleeve; 103. Threaded rod; 11. Drive structure; 111. Transmission gear; 112. Toothed belt; 113. Drive gear; 1114. Drive motor. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Please refer to Figures 1-6 As shown in the figure, this embodiment is a lightning protection device for a transformer, including a bottom plate 1. In the middle of the upper end surface of the bottom plate 1, a transformer 2 is fixedly connected. At the rear of the transformer 2 on the upper end surface of the bottom plate 1, a lightning protection cage 3 is fixedly connected. On the outer side of the lower end surface of the bottom plate 1, a connection structure 4 is fixedly connected. On the left and right sides of the inner cavity of the connection structure 4, a side lightning protection structure 5 is arranged. In the front part of the inner cavity of the connection structure 4, a front-end lightning protection structure 6 is arranged. In the middle of the front end surface of the lightning protection cage 3, a fixing structure 7 is arranged. On one side of each of the two side lightning protection structures 5 away from the lightning protection cage 3, a flip adjustment structure 8 is arranged. On the left and right sides between the two flip adjustment structures 8, a transmission structure 9 is arranged. Symmetrically on the middle part of the lower end surface of the bottom plate 1, a flip drive structure 10 is arranged. Between the two flip drive structures 10 on the lower end surface of the bottom plate 1, a drive structure 11 is arranged; In the middle of the upper end surface of the bottom plate 1, a transformer body 21 is fixedly connected. Heat sinks 22 are evenly fixedly connected to the outer surface of the transformer body 21. Through the transformer 2 on the bottom plate 1, during use, through the wiring terminals on the bottom plate 1, it is convenient for personnel to electrically connect external cables to the transformer body 21, and then the heat sinks 22 efficiently dissipate heat from the transformer body 21 when the transformer body 21 is working.

[0025] Further, the lightning protection cage 3 includes mounting struts 31 uniformly and fixedly connected to the rear part of the upper end face of the bottom plate 1. Between two adjacent mounting struts 31, there are uniformly and fixedly connected conductive crossbars 32. On the upper end face of the mounting struts 31, there is fixedly connected a mounting crossbar 33. Inside the cavity of the mounting crossbar 33, there are uniformly and fixedly connected conductive crossbars 32. On the front end face of the mounting crossbar 33, there is a fixing structure 7. In the middle of the left and right side end faces of the mounting crossbar 33, there are slots. Through the lightning protection cage 3 on the bottom plate 1, during use, the fixing structure 7 is installed and placed. Furthermore, through the mounting struts 31 and the mounting crossbar 33, the upper and rear parts of the transformer 2 are protected by the housing.

[0026] Further, the connection structure 4 includes connection columns 41 fixedly connected to the four corners of the lower end face of the bottom plate 1. At a corner of the upper end face of the connection column 41 away from the bottom plate 1, there is fixedly connected a connection block 42. Between two longitudinal connection blocks 42, there is a longitudinally rotating shaft 43 rotatably connected. Between two transverse connection blocks 42, there is a transversely rotating shaft 44 rotatably connected. Through the connection structure 4 on the bottom plate 1, during use, it is convenient for personnel to install the entire device, as well as the side lightning protection structure 5 and the front-end lightning protection structure 6. Furthermore, through the longitudinally rotating shaft 43 and the transversely rotating shaft 44, the side lightning protection structure 5 and the front-end lightning protection structure 6 can rotate stably.

[0027] Further, the side lightning protection structure 5 includes side connection columns 51 uniformly and fixedly connected to the outer surface of the longitudinally rotating shaft 43. On the upper end face of the side connection columns 51, there is fixedly connected a side crossbar 52. Between two adjacent side connection columns 51, there are uniformly and fixedly connected side conductive bars 53. Between the two side crossbars 52, there are respectively fixedly connected blocks that are mutually matched with the slots on the mounting crossbar 33. Through the side lightning protection structure 5 on the connection structure 4, during use, the left and right sides of the lightning protection cage 3 are enclosed. Furthermore, through the side connection columns 51, the flipping and adjusting structure 8 is installed and placed. Moreover, through the rotation of the side connection columns 51, it is convenient for personnel to perform maintenance and repair on both sides of the transformer 2.

[0028] Further, the front-end lightning protection structure 6 includes front-end support rods 61 uniformly and fixedly connected to the outer surface of the transversely rotating shaft 44. On the upper end face of the front-end support rods 61, there is fixedly connected a front-end crossbar 62. Between two adjacent front-end crossbars 62, there are uniformly and fixedly connected front-end conductive crossbars 63. In the middle of the front end face of the front-end crossbar 62, there is fixedly connected a pulling handle 64. Through the front-end lightning protection structure 6 on the connection structure 4, during use, the front end of the transformer 2 is enclosed and protected through the front-end support rods 61 and the front-end crossbar 62. Furthermore, through the mutual cooperation of the side lightning protection structure 5 and the lightning protection cage 3, a Faraday cage is formed outside the transformer 2, thereby providing lightning strike protection for the transformer 2 during thunderstorm weather.

[0029] Furthermore, the fixing structure 7 includes a fixing claw 71 fixedly connected to the middle of the rear end face of the front cross bar 62. A limiting slot 72 is formed in the middle of the front end face of the mounting cross bar 33. A limiting structure 73 is arranged in the inner cavity of the limiting slot 72. The fixing claw 71 is clamped in the inner cavity of the limiting slot 72. A limiting chute is formed in the middle of the upper end face of the limiting slot 72. The limiting structure 73 includes a limiting clamping plate 731 slidably connected in the inner cavity of the limiting chute. A groove matching the limiting clamping plate 731 is formed in the upper end face of the fixing claw 71. A lifting plate 732 is fixedly connected to the upper end face of the limiting clamping plate 731. Spring 733 is respectively connected between the left and right sides of the lower end face of the lifting plate 732 and the mounting cross bar 33. Through the fixing structure 7 on the lightning protection cage 3, the closed front lightning protection structure 6 is fixedly connected during use, so that the lightning protection cage 3 and the front lightning protection structure 6 form an integral body, enabling electrons to move freely in the lightning protection cage 3, the side lightning protection structure 5, and the front lightning protection structure 6. Furthermore, the fixing claw 71 clamped with the limiting slot 72 is limited by the clamping of the limiting structure 73, thus realizing the limiting and fixing of the upwardly rotating front lightning protection structure 6.

[0030] Furthermore, the flipping and adjusting structure 8 includes flipping rods 81 symmetrically and fixedly connected to the side connection columns 51 away from the bottom plate 1. An adjusting shaft 82 is rotatably connected between the two flipping rods 81. Adjusting connecting rods 83 are evenly fixedly connected to the outer surface of the adjusting shaft 82. A transmission structure 9 is arranged at one end of the adjusting connecting rod 83 away from the adjusting shaft 82. Through the flipping and adjusting structure 8 on the side lightning protection structure 5, the driving wheel of the flipping driving structure 10 is converted into a pushing and pulling force on the connecting structure 4 during operation. Furthermore, through the mutual movement of the adjusting connecting rods 83, the movement directions of the flipping rods 81 and the side lightning protection structure 5 are adjusted.

[0031] Furthermore, the transmission structure 9 is rotatably connected to a transmission shaft 91 at one end of two adjacent adjusting connecting rods 83 away from the adjusting shaft 82. A transmission block 92 is fixedly connected to the middle of the outer surface of the transmission shaft 91. A transmission plate 93 is fixedly connected to one end of the transmission block 92 away from the transmission shaft 91. A flipping driving structure 10 is arranged between the two transmission plates 93 on the lower end face of the bottom plate 1. Through the transmission structure 9 on the flipping and adjusting structure 8, power is transmitted to the flipping driving structure 10 during use. Furthermore, since the transmission shaft 91 and the adjusting connecting rod 83 rotate and are connected, it is convenient for the flipping and adjusting structure 8 to change the movement angle of the force.

[0032] Furthermore, the flipping drive structure 10 includes a rotating frame 101 symmetrically fixedly connected to the lower end surface of the base plate 1, the inner cavity of the rotating frame 101 is rotatably connected to a threaded sleeve 102, the inner cavity of the threaded sleeve 102 is symmetrically threadedly connected to a threaded rod 103, the ends of the two threaded rods 103 away from the threaded sleeve 102 are respectively fixedly connected to the transmission plates 93 on both sides of the threaded sleeve 102, and the lower end surface of the base plate 1 is provided with a driving structure 11 between the two threaded sleeves 102. Through the flipping drive structure 10 on the base plate 1, the movement direction of the transmission structure 9 and the flipping adjustment structure 8 is driven and adjusted during use, and then through the rotation of the threaded sleeve 102, the distance between the transmission structure 9 and the flipping adjustment structure 8 is adjusted and controlled, and the flipping adjustment structures 8 on both sides work simultaneously.

[0033] Furthermore, the driving structure 11 includes a transmission gear 111 fixedly connected to the middle part of the outer surface of the two threaded sleeves 102, the outer surfaces of the two transmission gears 111 are transmission-connected with a toothed belt 112, the middle part of the inner cavity of the toothed belt 112 is meshed with a driving gear 113, and the middle part of the lower end surface of the base plate 1 is fixedly connected with a driving motor 114, and the output end of the driving motor 114 is fixedly connected to the driving gear 113. The rotation of the threaded sleeve 102 is driven during use through the driving structure 11 on the base plate 1, and then the rotation direction of the threaded sleeve 102 is adjusted through the driving motor 114. At the same time, the threaded sleeves 102 on both sides are rotated in the same direction at the same time through the transmission gear 111 and the toothed belt 112.

[0034] Working principle: When working, the device is installed in a suitable position through the connecting column 41. At this time, the personnel connect the cable to the transformer body 21 through the terminal at the rear of the lower end surface of the bottom plate 1. When lightning strikes, since the lightning protection structures 5 on both sides are in contact with the lightning protection cage 3, and the front lightning protection structure 6 is in contact with the lightning protection cage 3 through the fixed structure 7, and the lightning protection cage 3, the side lightning protection structure 5, the front lightning protection structure 6 and the fixed structure 7 are all made of metal materials, the lightning protection cage 3, the side lightning protection structure 5 and the front lightning protection structure 6 form a Faraday cage structure. Therefore, when lightning strikes, based on the electrostatic shielding and charge shielding effects, the free electrons on the surface of the cage will be redistributed to neutralize the influence of the external electric field, thereby forming an area with extremely low electric field strength inside the cage, even close to zero, thereby preventing the transformer 2 from being struck by lightning. At the same time, due to the setting of the Faraday cage, electromagnetic shielding of the transformer 2 is achieved, so that the transformer 2 can operate safely and stably. However, when the transformer 2 needs to be overhauled, the driving structure 11 is started, so that the output end of the driving motor 114 rotates, so the driving gear 113 rotates, and then the toothed belt 112 meshing with the driving gear 113 rotates, further causing the transmission gear 111 drivingly connected to the toothed belt 112 to rotate. At this time, since the transmission gear 111 is fixedly connected to the middle of the outer surface of the threaded sleeve 102, the threaded sleeve 102 rotates. At this time, since the threaded rod 103 is fixedly connected to the transmission plate 93, the threaded rod 103 approaches each other under the limiting action of the transmission plate 93, so the transmission structure 9 approaches each other. At this time, since the adjusting link 83 is rotationally connected to the transmission structure 9, the lightning protection cage 3 approaches each other, and then provides a lateral pulling force to the adjusting shaft 82. Therefore, the turning lever 81 rotates downward with the longitudinal rotating shaft 43 as the center. Further, since the turning lever 81 is fixedly connected to the lightning protection structures 5 on both sides, the side lightning protection structures 5 rotate downward with the longitudinal rotating shaft 43 as the center, so as to open the left and right sides of the lightning protection cage 3, facilitating personnel to overhaul and maintain the transformer 2. When the front end of the lightning protection cage 3 needs to be opened, pull the pulling handle 64, so that the front end support rod 61 rotates downward with the horizontal rotating shaft 44 as the center. At the same time, since the fixed claw 71 is separated from the limit card slot 72, the limit card plate 731 and the lifting plate 732 slide upward, and then the spring 733 elongates. Therefore, the front-end lightning protection structure 6 is separated from the lightning protection cage 3. Similarly, when a thunderstorm is detected, push the pulling handle 64 in the reverse direction, so that the front end support rod 61 rotates upward with the horizontal rotating shaft 44 as the center. Therefore, the fixed claw 71 is engaged with the limit card slot 72. After the fixed claw 71 is engaged with the limit card slot 72, the spring 733 contracts, so the height of the lifting plate 732 and the limit card plate 731 decreases, so the limit card plate 731 is engaged with the groove on the fixed claw 71, and the front-end lightning protection structure 6 is tightly attached and fixed to the lightning protection cage 3. At the same time, start the driving motor 114, so that the output end of the driving motor 114 rotates in the reverse direction. Therefore, the driving gear 113, the toothed belt 112, the transmission gear 111 and the threaded sleeve 102 rotate in the reverse direction. So the threaded rods 103 in the inner cavity of the threaded sleeve 102 move away from each other in the opposite direction, thereby pushing the transmission structure 9 away from each other. Since the adjusting link 83 is rotationally connected to the transmission shaft 91, the adjusting links 83 move away from each other. Therefore, a pushing force in the opposite direction in the horizontal direction is provided to the turning lever 81. At this time, since the turning lever 81 is rotationally connected to the longitudinal rotating shaft 43 through the side connecting column 51, the pushing force in the horizontal direction of the adjusting link 83 is converted into an upward pushing force. So the front-end lightning protection structure 6 rotates upward with the longitudinal rotating shaft 43 as the center, so that the front-end lightning protection structure 6 fits with the left and right sides of the lightning protection cage 3. Therefore, the left and right sides of the lightning protection cage 3 are closed. At the same time, since the driving motor 114 is a variable-frequency bidirectional motor, the rotated turning driving structure 10 is limited.

[0035] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0036] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lightning protection device for a transformer, comprising a bottom plate (1), characterized in that; In the middle of the upper end face of the bottom plate (1), a transformer (2) is fixedly connected. At the rear of the transformer (2) on the upper end face of the bottom plate (1), a lightning protection cage (3) is fixedly connected. On the outer side of the lower end face of the bottom plate (1), a connection structure (4) is fixedly connected. On the left and right sides inside the cavity of the connection structure (4), side lightning protection structures (5) are arranged. In the front part of the cavity of the connection structure (4), a front-end lightning protection structure (6) is arranged. In the middle of the front end face of the lightning protection cage (3), a fixing structure (7) is arranged. On one side of each of the two side lightning protection structures (5) far from the lightning protection cage (3), a flipping and adjusting structure (8) is arranged. On the left and right sides between the two flipping and adjusting structures (8), a transmission structure (9) is arranged. Symmetrically on the middle of the lower end face of the bottom plate (1), flipping drive structures (10) are arranged. Between the two flipping drive structures (10) on the lower end face of the bottom plate (1), a drive structure (11) is arranged; In the middle of the upper end face of the bottom plate (1), a transformer body (21) is fixedly connected. Heat dissipation fins (22) are evenly fixedly connected to the outer surface of the transformer body (21). The flipping and adjusting structure (8) includes flipping rods (81) symmetrically and fixedly connected to one side of the side lightning protection structure (5) far from the bottom plate (1). Between the two flipping rods (81), an adjusting shaft (82) is rotatably connected. Adjusting connecting rods (83) are evenly fixedly connected to the outer surface of the adjusting shaft (82). At one end of the adjusting connecting rod (83) far from the adjusting shaft (82), a transmission structure (9) is arranged. The transmission structure (9) is rotatably connected to a transmission shaft (91) at one end of each of the adjacent two adjusting connecting rods (83) far from the adjusting shaft (82). In the middle of the outer surface of the transmission shaft (91), a transmission block (92) is fixedly connected. At one end of the transmission block (92) far from the transmission shaft (91), a transmission plate (93) is fixedly connected. Between the two transmission plates (93) on the lower end face of the bottom plate (1), a flipping drive structure (10) is arranged; The flipping drive structure (10) includes rotating frames (101) symmetrically and fixedly connected to the lower end face of the bottom plate (1). Inside the cavity of the rotating frame (101), a threaded sleeve (102) is rotatably connected. Inside the threaded sleeve (102), threaded rods (103) are symmetrically threadedly connected. At one end of each of the two threaded rods (103) far from the threaded sleeve (102), they are fixedly connected to the transmission plates (93) on both sides of the threaded sleeve (102). Between the two threaded sleeves (102) on the lower end face of the bottom plate (1), a drive structure (11) is arranged; The drive structure (11) includes transmission gears (111) fixedly connected to the middle of the outer surfaces of the two threaded sleeves (102). A toothed belt (112) is drivingly connected to the outer surfaces of the two transmission gears (111). Inside the cavity of the toothed belt (112), a driving gear (113) is meshed. In the middle of the lower end face of the bottom plate (1), a driving motor (114) is fixedly connected. The output end of the driving motor (114) is fixedly connected to the driving gear (113).

2. The lightning protection device for a transformer according to claim 1, characterized in that, The lightning protection cage (3) includes mounting struts I (31) uniformly and fixedly connected to the rear part of the upper end surface of the bottom plate (1). Between two adjacent mounting struts I (31), conductive crossbars I (32) are uniformly and fixedly connected. The upper end surface of the mounting strut I (31) is fixedly connected with a mounting crossbar (33). Inside the cavity of the mounting crossbar (33), conductive crossbars I (32) are uniformly and fixedly connected. A fixing structure (7) is arranged on the front end surface of the mounting crossbar (33). Slots are formed in the middle of the left and right end surfaces of the mounting crossbar (33).

3. The lightning protection device for a transformer according to claim 1, characterized in that The connecting structure (4) includes connecting columns (41) fixedly connected to the four corners of the lower end surface of the bottom plate (1). At a corner of the upper end surface of the connecting column (41) far from the bottom plate (1), a connecting block (42) is fixedly connected. A longitudinal rotating shaft (43) is rotatably connected between two longitudinal connecting blocks (42). A transverse rotating shaft (44) is rotatably connected between two transverse connecting blocks (42).

4. The lightning protection device for a transformer according to claim 3, characterized in that, The side lightning protection structure (5) includes side connecting columns (51) uniformly and fixedly connected to the outer surface of the longitudinal rotating shaft (43). The upper end surface of the side connecting column (51) is fixedly connected with a side crossbar (52). Between two adjacent side connecting columns (51), side conductive rods (53) are uniformly and fixedly connected. Clamping blocks that are mutually matched with the slots on the mounting crossbar (33) are respectively fixedly connected between the two side crossbars (52).

5. The lightning protection device for a transformer according to claim 3, characterized in that, The front-end lightning protection structure (6) includes front-end support rods (61) uniformly and fixedly connected to the outer surface of the transverse rotating shaft (44). The upper end surface of the front-end support rod (61) is fixedly connected with a front-end crossbar (62). Between two adjacent front-end crossbars (62), front-end conductive crossbars (63) are uniformly and fixedly connected. A pulling handle (64) is fixedly connected to the middle of the front end surface of the front-end crossbar (62).

6. The lightning protection device for a transformer according to claim 5, wherein, The fixing structure (7) includes a fixing claw (71) fixedly connected to the middle of the rear end surface of the front-end crossbar (62). A limiting slot (72) is formed in the middle of the front end surface of the mounting crossbar (33). A limiting structure (73) is arranged inside the cavity of the limiting slot (72). The fixing claw (71) is clamped inside the cavity of the limiting slot (72). A limiting chute is formed in the middle of the upper end surface of the limiting slot (72). The limiting structure (73) includes a limiting clamping plate (731) slidably connected inside the cavity of the limiting chute. A groove that is mutually matched with the limiting clamping plate (731) is formed on the upper end surface of the fixing claw (71). A lifting plate (732) is fixedly connected to the upper end surface of the limiting clamping plate (731). Springs (733) are respectively drivingly connected between the left and right sides of the lower end surface of the lifting plate (732) and the mounting crossbar (33).

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