Lightning protection dry-type transformer

Abstract

The invention discloses a lightning protection dry-type transformer, and relates to the technical field of transformers, the lightning protection dry-type transformer comprises a box body and a protection assembly, and the top of the box body is fixedly provided with a lightning protection box; when the device is used, the anemograph is started, when the detected wind speed exceeds the set maximum working threshold value, the PLC controls the positive and negative motor to be started, the two driving gears, the two rotating rods and the two driven gears are driven to rotate reversely, and the two insulating rods are driven to rotate reversely through the two chains; the two insulating reinforcing rods are rotated out of the corresponding movable holes respectively, the two supporting clamps are clamped on the outer surface of a needle body of the lightning rod body, the two supporting clamps are clamped at the needle body of the lightning rod body through the supporting assembly, a circular fixing ring is formed, and under cooperation of the insulating reinforcing rods and the insulating rod, supporting force is increased, and the lightning rod is prevented from being damaged. And a stable structure is formed, the overall stability is improved, the wind power effect is better resisted, and the shaking amplitude is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to a lightning protection dry-type transformer. Background Art

[0002] A dry-type transformer refers to a transformer whose core and windings are not immersed in insulating oil. It relies on air convection for cooling and has the characteristics of being flame-retardant, flame-retardant, fireproof, explosion-proof, environmentally friendly and pollution-free. It is widely used in places with high fire prevention requirements and occasions with high environmental requirements. At present, domestic onshore wind farm project box transformers usually use oil-immersed transformers. Oil-immersed transformers have the risk of oil leakage and even pollute water sources or soil. Serious failures may cause fires. In addition, oil-immersed transformers require more maintenance work every year, and oil filtering or oil replacement will be arranged when necessary. The operation and maintenance costs are high, which affects the power generation of the wind farm. When a box transformer with a dry-type transformer is used, the above environmental protection and fire protection risks can be avoided.

[0003] In the prior art, such as Chinese patent publication number: CN217306252U, a lightning protection dry-type transformer is disclosed, including a lower bracket, the lower bracket is detachably connected to a lower iron yoke inside, the upper end face of the lower bracket is detachably connected to a winding, the upper end face of the winding is detachably connected to an upper bracket, the upper bracket is detachably connected to an upper iron yoke inside, the upper end face of the upper bracket is fixedly connected to a fixing seat, the upper end face of the fixing seat is detachably connected to a lightning rod, the winding is composed of insulating paper, a skeleton, a coil and an iron core, the inside of the skeleton is detachably connected to an iron core, the outside of the skeleton is wound with a coil, and the outside of the coil is wrapped with insulating paper. By providing a lightning rod, the lightning rod can make the dry-type transformer have a good lightning protection effect, thereby preventing the dry-type transformer from being damaged. When the lightning rod is used, the lightning rod is grounded, which greatly improves the service life of the dry-type transformer.

[0004] In the prior art, a lightning protection dry-type transformer is a transformer with a lightning protection function added to an ordinary dry-type transformer. It can effectively prevent damage to the transformer caused by lightning overvoltage and improve the operational reliability and safety of the transformer. During the use of a lightning protection dry-type transformer, the needle body of the lightning rod used for lightning protection on the top of the dry-type transformer is generally slender. When encountering strong winds, the needle body is easily affected by the strong wind, causing the lightning rod to shake. Over time, it is easy to cause the connection between the lightning rod and the dry-type transformer to loosen or break, and even damage the top structure of the transformer, which will also affect the lightning protection effect of the dry-type transformer.

[0005] Therefore, we propose a lightning protection dry-type transformer to solve the problems raised in the above background technology. Summary of the invention

[0006] The object of the present invention is to provide a lightning protection dry-type transformer to solve the problem that during the use of the lightning protection dry-type transformer proposed in the above background technology, when encountering strong wind weather, the lightning rod is prone to shaking. Over a long period of time, it is easy to cause the connection between the lightning rod and the dry-type transformer to loosen or break, and even damage the top structure of the transformer, which will also affect the lightning protection effect of the dry-type transformer.

[0007] To achieve the above object, the present invention provides the following technical solutions: a lightning protection dry-type transformer, comprising a box and a protection assembly, wherein a lightning protection box is fixedly installed on the top of the box, a lightning rod body is installed at the center of the top of the box by bolts, a support assembly and a guide assembly are arranged inside the lightning protection box, the support assembly is used to assist in supporting the lightning rod body in strong winds, the guide assembly is used to assist in guiding the lightning current to safely underground, and the protection assembly is used to protect the support assembly and the guide assembly;

[0008] The support assembly includes two fixed seats, and rotating rods are movably embedded in the interiors of the two fixed seats, and a driving gear is fixedly installed at one end of the two rotating rods, and a driven gear is fixedly installed at the other end of the two rotating rods, and a forward and reverse motor is fixedly installed on the bottom surface of the interior of the lightning protection box, and the outer surfaces of the two driven gears are meshed with chains, and the inner walls of the two chains are meshed with rotating gears, and insulating rods are fixedly installed on the outer surfaces of one side of the two rotating gears, and insulating reinforcement rods are fixedly installed on the outer surfaces of the two insulating rods, and support clamps are fixedly installed at one end of the two insulating reinforcement rods, and protective strips are fixedly connected to the inner walls of the two support clamps near both sides.

[0009] Preferably, the output end of the forward and reverse motor is fixedly connected to the outer surface of one side of one of the driving gears, the outer surfaces of the two driving gears are meshingly connected, the outer surfaces of the two insulating rods are movably sleeved with two fixing plates, and the bottoms of the two fixing plates are fixedly mounted on the bottom surface inside the lightning protection box.

[0010] Preferably, the guide assembly includes a U-shaped insulating tube, a U-shaped conductive rod is fixedly installed inside the U-shaped insulating tube, conductive columns are fixedly installed on the outer surface of the U-shaped conductive rod near both ends, a down conductor is fixedly connected to the outer surface of the U-shaped conductive rod, protective sleeves are fixedly installed on the outer surface of the U-shaped insulating tube near both ends, and lightning rods are fixedly installed inside the two insulating reinforcement rods.

[0011] Preferably, the inner walls of the two support clamps are fixedly connected with conductive sheets, one end of the two lightning rods are respectively fixedly passed through the interior of the two support clamps, one end of the two lightning rods are respectively fixedly connected to the outer surfaces of the two conductive sheets, and the other ends of the two lightning rods are fixedly installed with power rods.

[0012] Preferably, inclined conductive rods are fixedly installed on the outer surfaces of the two lead-in rods, one ends of the two inclined conductive rods are respectively fixed and penetrate the outer surfaces of the two insulating rods, and insulating sleeves are fixedly sleeved on the outer surfaces of the two inclined conductive rods, and the outer surfaces of one side of the two insulating sleeves are respectively fixedly installed on the outer surfaces of the two insulating rods.

[0013] Preferably, one end of the two conductive posts are fixed through the outer surface of the U-shaped insulating tube, the outer surfaces of the two conductive posts are respectively fixedly installed on the inner walls of the two protective sleeves, one end of the down conductor is fixedly installed through the U-shaped insulating tube and the lightning protection box to the outer surface, and a plurality of connecting rods are fixedly installed on the outer surface of the U-shaped insulating tube near the bottom.

[0014] Preferably, the bottom ends of the plurality of connecting rods are fixedly mounted on the bottom surface of the lightning protection box, the two insulating rods are provided with embedded grooves, and the two ends of the two lead rods are respectively fixedly mounted on both sides of the two embedded grooves.

[0015] Preferably, the protective assembly includes a mounting plate, an electric push rod is fixedly installed inside the mounting plate, a movable plate is fixedly installed at one end of the electric push rod, two support rods are movably embedded inside the movable plate, one end of the two support rods are fixedly installed on the outer surface of the lightning protection box, a U-shaped plate is fixedly installed on the top of the movable plate, two protective plates are fixedly installed on the outer surface of one side of the U-shaped plate, and two sliding columns are fixedly installed on the bottom of the two protective plates.

[0016] Preferably, two movable holes are provided on the top of the lightning protection box, and sealing rings are fixedly connected to the top of the lightning protection box near the two movable holes. Two slide grooves are provided on the top of the lightning protection box near the two movable holes, and the bottom ends of the plurality of slide columns are movably embedded in the plurality of slide grooves respectively, the outer surface of the mounting plate is fixedly installed on the top surface inside the lightning protection box, and one end of the electric push rod movably penetrates to the outer surface of the lightning protection box.

[0017] Preferably, an anemometer is arranged near one side of the top of the box body, a PLC controller is fixedly installed on the bottom surface of the interior of the lightning protection box near the rear wall, a bottom plate is fixedly installed on the bottom surface of the interior of the box body, a dry-type transformer body is arranged on the top of the bottom plate, a fan is arranged on the bottom of the dry-type transformer body, a mounting hole is opened at the center of the top of the lightning protection box, the lightning rod body is located inside the mounting hole, a drainage groove is opened at the bottom of the lightning protection box, and the bottoms of the two fixing seats are fixedly installed on the bottom surface inside the lightning protection box.

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

[0019] 1. When the present invention is used, the anemometer is started. When the detected wind speed exceeds the set maximum working threshold, the PLC controller controls the forward and reverse motors to start, driving the two driving gears, the two rotating rods and the two driven gears to rotate in the opposite direction, and respectively driving the two insulating rods to rotate in the opposite direction through two chains, so that the two insulating reinforcement rods are respectively rotated out of the corresponding movable holes, so that the two supporting clips are clamped on the outer surface of the needle body of the lightning rod body, and the two supporting clips are clamped on the needle body of the lightning rod body through the supporting assembly to form a circular fixing ring. With the cooperation of the insulating reinforcement rod and the insulating rod, the needle body of the lightning rod body is auxiliary supported, the supporting force is increased, a stable structure is formed, the overall stability is improved, the effect of wind force is better resisted, and the shaking amplitude is reduced.

[0020] 2. When the present invention is used, the lightning rod body attracts lightning to itself, and safely introduces lightning current into the earth through the lead wire and the grounding device, thereby protecting the transformer from damage by lightning overvoltage. The two conductive sheets are in contact with the outer surface of the lightning rod body through the support assembly. At the same time, one end of the two inclined conductive rods rotates to the corresponding conductive column. Part of the current on the lightning rod body will flow to the two conductive sheets, and then the lightning rod and the current guide rod will guide the current to the inclined conductive rod, and guide the current to the U-shaped conductive rod through the conductive column. Finally, the current is safely led underground through the down conductor and the grounding device. The support assembly and the guide assembly cooperate to share part of the lightning current, thereby reducing the burden on the lightning rod body and guiding the lightning current to the underground more quickly, thereby improving the lightning protection effect of the transformer.

[0021] 3. When the present invention is used, the output end of the forward and reverse motor is reversed, driving the insulating reinforcement rod and the supporting clamp to leave the needle body of the lightning rod. At this time, the conductive sheet is not in contact with the lightning rod body, which can prevent the conductive sheet from misleading current due to other factors in non-lightning weather, thereby reducing unnecessary safety risks. When in use, start the electric push rod, pull the movable plate and the U-shaped plate to move toward the direction of the lightning rod body, push the protective plate to move to the top of the two sealing rings, and shield the two movable holes to prevent dust and impurities from falling onto the conductive sheet through the movable holes, affecting the subsequent conductive effect of the conductive sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front perspective view of a lightning protection dry-type transformer of the present invention;

[0023] Figure 2 It is a three-dimensional diagram of the structure of a dry-type transformer body in a lightning protection dry-type transformer of the present invention;

[0024] Figure 3 It is a structural sectional expanded stereoscopic diagram of a protection component in a lightning protection dry-type transformer of the present invention;

[0025] Figure 4It is a structural sectional expanded stereoscopic diagram of a lightning protection box in a lightning protection dry-type transformer of the present invention;

[0026] Figure 5 It is a structural sectional expanded stereoscopic diagram of a protection plate in a lightning protection dry-type transformer of the present invention;

[0027] Figure 6 It is a structural unfolded stereogram of a sealing ring in a lightning protection dry-type transformer of the present invention;

[0028] Figure 7 It is a structural cross-sectional expanded stereoscopic diagram of a guide assembly in a lightning protection dry-type transformer of the present invention;

[0029] Figure 8 It is a structural unfolded stereogram of a support assembly in a lightning protection dry-type transformer of the present invention;

[0030] Fig. 9 It is a structural cross-sectional expanded stereoscopic diagram of an insulating rod in a lightning protection dry-type transformer of the present invention;

[0031] Fig.10 It is a cross-sectional and expanded stereoscopic diagram of the structure of a support clamp in a lightning protection dry-type transformer of the present invention;

[0032] Fig.11 It is a three-dimensional diagram of the structure of a U-shaped conductive rod in a lightning protection dry-type transformer of the present invention;

[0033] Fig.12 Fig.11 The enlarged stereogram at A in the middle;

[0034] Fig.13 The present invention is a structural expansion stereogram of a lightning protection dry-type transformer employee fixing seat.

[0035] In the figure: 1, box; 2, lightning protection box; 3, lightning rod body; 4, protection assembly; 401, mounting plate; 402, electric push rod; 403, moving plate; 404, support rod; 405, U-shaped plate; 406, protection plate; 407, slide groove; 408, slide column; 409, movable hole; 410, sealing ring; 5, anemometer; 6, bottom plate; 7, fan; 8, support assembly; 801, fixed seat; 802, rotating rod; 803, forward and reverse motor; 804, fixed plate; 805, insulating rod; 806, driving gear; 807, insulation reinforcement Rod; 808, rotating gear; 809, chain; 810, support clamp; 811, driven gear; 812, protection strip; 813, insulating sleeve; 814, embedded groove; 9, guide assembly; 901, U-shaped insulating tube; 902, connecting rod; 903, protective sleeve; 904, U-shaped conductive rod; 905, down conductor; 906, conductive column; 907, lightning rod; 908, conductive sheet; 909, power rod; 910, inclined conductive rod; 10, dry-type transformer body; 11, mounting hole; 12, PLC controller; 13, drainage trough. DETAILED DESCRIPTION

[0036] 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 implementation regulations described 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.

[0037] Example 1: Please refer to Figure 1-Figure 13As shown, the present invention provides a technical solution: a lightning protection dry-type transformer, including a box body 1 and a protection component 4, a lightning protection box 2 is fixedly installed on the top of the box body 1, a lightning rod body 3 is installed at the center of the top of the box body 1 by bolts, and a support component 8 and a guide component 9 are arranged inside the lightning protection box 2, the support component 8 is used to assist in supporting the lightning rod body 3 in strong winds, the guide component 9 is used to assist in guiding the lightning current to safely guide it underground, and the protection component 4 is used to protect the support component 8 and the guide component 9; the support component 8 includes two fixed seats 801, and the interiors of the two fixed seats 801 are movably embedded with rotating rods 802, and one end of the two rotating rods 802 A driving gear 806 is fixedly installed on each of the two rotating rods 802, a driven gear 811 is fixedly installed on the other end of each of the two rotating rods 802, a forward and reverse motor 803 is fixedly installed on the bottom surface inside the lightning protection box 2, the outer surfaces of the two driven gears 811 are meshedly connected with chains 809, the inner walls of the two chains 809 are meshedly connected with rotating gears 808, an insulating rod 805 is fixedly installed on the outer surface of one side of the two rotating gears 808, an insulating reinforcement rod 807 is fixedly installed on the outer surface of the two insulating rods 805, a supporting clamp 810 is fixedly installed on one end of each of the two insulating reinforcement rods 807, and a protective strip 812 is fixedly connected to the inner walls of the two supporting clamps 810 near both sides. The output end of the forward and reverse motor 803 is fixedly connected to the outer surface of one side of one of the driving gears 806, the outer surfaces of the two driving gears 806 are meshed and connected, the outer surfaces of the two insulating rods 805 are movably sleeved with two fixing plates 804, the bottoms of the two fixing plates 804 are fixedly installed on the bottom surface of the interior of the lightning protection box 2, the top of the lightning protection box 2 is provided with two movable holes 409, the top of the lightning protection box 2 is fixedly connected with a sealing ring 410 near the two movable holes 409, the top of the lightning protection box 2 is provided with two slide grooves 407 near the two movable holes 409, the bottom ends of the plurality of slide columns 408 are movably embedded in the plurality of slide grooves 407, and the mounting plate 401 is provided with a plurality of slide grooves 407. The outer surface is fixedly installed on the top surface inside the lightning protection box 2, one end of the electric push rod 402 is movable and penetrates the outer surface of the lightning protection box 2, an anemometer 5 is arranged near one side of the top of the box body 1, a PLC controller 12 is fixedly installed on the bottom surface inside the lightning protection box 2 near the rear wall, a bottom plate 6 is fixedly installed on the bottom surface inside the box body 1, a dry-type transformer body 10 is arranged on the top of the bottom plate 6, a fan 7 is arranged on the bottom of the dry-type transformer body 10, a mounting hole 11 is opened at the center of the top of the lightning protection box 2, the lightning rod body 3 is located inside the mounting hole 11, a drainage groove 13 is opened at the bottom of the lightning protection box 2, and the bottoms of the two fixing seats 801 are fixedly installed on the bottom surface inside the lightning protection box 2.

[0038] In this embodiment, when in use, the electric push rod 402, the anemometer 5, the forward and reverse motor 803 and the PLC controller 12 are electrically connected, and the PLC controller 12 is wirelessly connected to the external console. The lightning protection dry-type transformer is mainly composed of a box 1, a lightning rod body 3, a bottom plate 6, a dry-type transformer body 10 and a fan 7, wherein the dry-type transformer body 10 mainly includes an iron core, a winding and an insulation system. The iron core is the magnetic circuit part of the dry-type transformer, which is stacked by silicon steel sheets, and the winding is the circuit part of the dry-type transformer, which is wound by copper or aluminum wires. The function of the winding is to transmit electric energy, and the electric energy of the primary side is transferred to the secondary side through electromagnetic induction. The insulation system is an important part of the dry-type transformer, which includes winding insulation, iron core insulation and lead insulation. The function of the insulation system is to ensure the electrical insulation performance of the transformer, to prevent short circuit or leakage between the windings, between the windings and the iron core, and between the windings and the shell. The dry-type transformer body 10 is an existing mature technology, so its specific working principle is not described in detail here. When the thundercloud approaches the ground, the electric field strength at the tip of the lightning rod body 3 is much higher than that of other surrounding objects, so that the air near the lightning rod body 3 is ionized, forming a local strong electric field. Under the action of the strong electric field, the air is ionized to produce a large number of electrons and ions, forming a conductive channel. When the electric field strength between the charges in the thundercloud layer and the charges on the ground reaches a certain level, the lightning will discharge along this conductive channel to the lightning rod body 3. The lightning rod body 3 attracts the lightning to itself and safely introduces the lightning current into the earth through the lead and the grounding device, thereby protecting the transformer from damage by the lightning overvoltage, thereby achieving a lightning protection effect.When encountering strong winds, the anemometer 5 is started, and the wind speed around the dry-type transformer body 10 is detected by the anemometer 5, and the detected wind speed information is transmitted to the PLC controller 12 in the form of an electrical signal. The maximum and minimum working thresholds of the strong wind speed are set in advance inside the PLC controller 12. The PLC controller 12 will identify and compare according to the received wind speed data. When the detected wind speed exceeds the set maximum working threshold, it means that the strong wind force is large, and the needle body of the lightning rod body 3 is affected by the strong wind and is prone to shaking. At this time, the PLC controller 12 will start the electric push rod 402, push the movable plate 403 and the U-shaped plate 405 to move to one side, and drive the two protective plates 406 to move and leave from the top of the sealing ring 410. At this time, the two movable holes 409 lose their shielding protection, and the lightning rod 3 is connected. The PLC controller 12 will start the forward and reverse motor 803, and the rotation of the output end of the forward and reverse motor 803 drives one of the driving gears 806 to rotate clockwise, and drives the other driving gear 806 meshing with it to rotate counterclockwise, further driving the two rotating rods 802 and the corresponding two driven gears 811 to rotate in the opposite direction, and drives the insulating rod 805 near the rear side to rotate clockwise through the chain 809, and the insulating rod 805 near the front side to rotate counterclockwise, further driving the two insulating reinforcement rods 807 to rotate out of the corresponding active holes 409 respectively, and rotate toward the needle body of the lightning rod body 3, so that the two support clamps 810 rotate to the needle body of the lightning rod body 3, when the forward and reverse motor 803 is automatically closed, the two support clamps 810 are clamped on the outer surface of the needle body of the lightning rod body 3, such as. Figure 5As shown, at this time, the protective strip 812 and the conductive sheet 908 are both in contact with the lightning rod body 3. The protective strip 812 is made of rubber material. The protective strip 812 prevents wear between the support clip 810 and the lightning rod body 3. The two support clips 810 are clamped at the needle body of the lightning rod body 3 through the support assembly 8 to form a circular fixing ring. With the cooperation of the insulating reinforcement rod 807 and the insulating rod 805, the needle body of the lightning rod body 3 is auxiliary supported to increase the supporting force, form a stable structure, improve the overall stability, better resist the effect of wind, reduce the shaking amplitude, avoid the loosening of the connection between the lightning rod body 3 and the dry-type transformer, and affect the lightning protection effect of the transformer. The problem of the dry-type lightning protection transformer being in strong wind weather during use is solved. Lightning rods are prone to shaking. Over time, it is easy to cause the connection between the lightning rod and the dry-type transformer to loosen or break, or even damage the top structure of the transformer, and affect the lightning protection effect of the dry-type transformer. When the external wind force is small, the forward and reverse motor 803 is started again. At this time, the output end of the forward and reverse motor 803 will rotate in the opposite direction, causing the insulating rod 805 to rotate in the opposite direction to the previous rotation direction, so that the two insulating reinforcement rods 807 drive the support clip 810 to leave the needle body of the lightning rod body 3 and rotate back to the inside of the lightning protection box 2 through the movable hole 409. At this time, the conductive sheet 908 is not in contact with the lightning rod body 3. When there is no lightning weather, the conductive sheet 908 can be prevented from misleading current due to other factors in non-lightning weather, thereby reducing unnecessary safety risks.

[0039] Embodiment 2: Figure 3-Figure 5 and Figure 7-Figure 12As shown, a support assembly 8 and a guide assembly 9 are arranged inside the lightning protection box 2. The support assembly 8 is used to assist in supporting the lightning rod body 3 in strong winds. The guide assembly 9 is used to assist in guiding the lightning current to be safely guided underground. The protection assembly 4 is used to protect the support assembly 8 and the guide assembly 9. The guide assembly 9 includes a U-shaped insulating tube 901. A U-shaped conductive rod 904 is fixedly installed inside the U-shaped insulating tube 901. Conductive columns 906 are fixedly installed on the outer surface of the U-shaped conductive rod 904 near both ends. The outer surface of the conductive rod 904 is fixedly connected to the down conductor 905, the outer surface of the U-shaped insulating tube 901 is fixedly installed with a protective cover 903 near both ends, the interior of the two insulating reinforcement rods 807 is fixedly installed with a lightning rod 907, the inner walls of the two support clips 810 are fixedly connected to the conductive sheet 908, one end of the two lightning rods 907 is fixedly passed through the interior of the two support clips 810, one end of the two lightning rods 907 is fixedly connected to the outer surface of the two conductive sheets 908, and the two lightning rods 907 are fixedly connected to the outer surface of the conductive sheet 908. The other ends of the two conductive rods 909 are fixedly installed, and the outer surfaces of the two conductive rods 909 are fixedly installed with inclined conductive rods 910. One ends of the two inclined conductive rods 910 are respectively fixed to the outer surfaces of the two insulating rods 805. The outer surfaces of the two inclined conductive rods 910 are fixedly sleeved with insulating sleeves 813. The outer surfaces of one side of the two insulating sleeves 813 are respectively fixedly installed on the outer surfaces of the two insulating rods 805. One end of the two conductive pillars 906 is fixed to the outer surface of the U-shaped insulating tube 901. The outer surface of the electric pole 906 is fixedly installed on the inner walls of the two protective covers 903, and one end of the down conductor 905 is fixedly passed through the U-shaped insulating tube 901 and the lightning protection box 2 to the outer surface. A plurality of connecting rods 902 are fixedly installed on the outer surface of the U-shaped insulating tube 901 near the bottom, and the bottom ends of the plurality of connecting rods 902 are fixedly installed on the bottom surface of the lightning protection box 2. The two insulating rods 805 are provided with embedded grooves 814, and the two ends of the two lead-in rods 909 are fixedly installed on both sides of the two embedded grooves 814.

[0040] In this embodiment, when in use, when there is lightning outside, the PLC controller 12 is remotely controlled by the external console to start the protection component 4 and the support component 8. The working process has been described in detail in the first embodiment. The two conductive sheets 908 are in contact with the outer surface of the lightning rod body 3 through the support component 8. At the same time, when the insulating rod 805 rotates, the insulating sleeve 813 and the inclined conductive rod 910 are driven to rotate together, so that one end of the two inclined conductive rods 910 rotates to the corresponding conductive column 906. At this time, the inclined conductive rod 910 is in contact with the conductive column 906. When the lightning rod body 3 is connected to the lightning rod body 3, the two conductive sheets 908 are in contact with the outer surface of the lightning rod body 3. When the current is safely guided underground through the lead wire and the grounding device, part of the current on the lightning rod body 3 will flow to the two conductive sheets 908, and then the current will be guided to the inclined conductive rod 910 through the corresponding lightning rod 907 and the lead rod 909, and the current will be guided to the U-shaped conductive rod 904 through the conductive column 906. The down conductor 905 is connected to the grounding device. The U-shaped conductive rod 904 safely guides the current underground through the down conductor 905 and the grounding device. The support component 8 and the guide component 9 cooperate to share part of the lightning current, thereby reducing the burden on the lightning rod body 3 and guiding the lightning current to the underground more quickly. At the same time, the presence of the guide component 9 increases the flow path of the current, which is conducive to the rapid discharge of the lightning current, thereby improving the lightning protection effect of the transformer.

[0041] Embodiment 3: Figure 3-Figure 8 As shown, a support assembly 8 and a guide assembly 9 are arranged inside the lightning protection box 2. The support assembly 8 is used to provide auxiliary support to the lightning rod body 3 during strong winds. The guide assembly 9 is used to assist in guiding the lightning current to be safely guided underground. The protection assembly 4 is used to protect the support assembly 8 and the guide assembly 9. The protection assembly 4 includes a mounting plate 401. An electric push rod 402 is fixedly installed inside the mounting plate 401. A movable plate 403 is fixedly installed at one end of the electric push rod 402. Two support rods 404 are movably embedded inside the movable plate 403. One end of the two support rods 404 are fixedly installed on the outer surface of the lightning protection box 2. The top of the movable plate 403 is fixedly installed. A U-shaped plate 405 is installed, and two protective plates 406 are fixedly installed on the outer surface of one side of the U-shaped plate 405, and two sliding columns 408 are fixedly installed on the bottom of the two protective plates 406. Two movable holes 409 are opened on the top of the lightning protection box 2, and sealing rings 410 are fixedly connected to the top of the lightning protection box 2 near the two movable holes 409. Two slide grooves 407 are opened on the top of the lightning protection box 2 near the two movable holes 409, and the bottom ends of multiple sliding columns 408 are movably embedded in the inside of the multiple slide grooves 407 respectively. The outer surface of the mounting plate 401 is fixedly installed on the top surface inside the lightning protection box 2, and one end of the electric push rod 402 movably penetrates to the outer surface of the lightning protection box 2.

[0042] In this embodiment, when in use, the support assembly 8 is rotated back into the lightning protection box 2. Figure 4As shown, the electric push rod 402 is then started again, pulling the movable plate 403 and the U-shaped plate 405 to move toward the direction of the lightning rod body 3, and pushing the two protective plates 406 to move at the same time, so that the two protective plates 406 move to the top of the two sealing rings 410, and the two movable holes 409 are shielded and protected. Under the action of the protective component 4, the equipment in the lightning protection box 2 is protected to prevent dust and impurities from falling onto the conductive sheet 908 through the movable hole 409, causing dust and impurities to accumulate on the inner wall of the conductive sheet 908, affecting the subsequent conductive effect of the conductive sheet 908.

[0043] The effect and working principle of the whole mechanism are as follows: when encountering strong wind weather, the anemometer 5 is started, and the wind speed around the dry-type transformer body 10 is detected by the anemometer 5, and the detected wind speed information is transmitted to the PLC controller 12 in the form of an electrical signal. The maximum and minimum working thresholds of the strong wind speed are set in advance inside the PLC controller 12. The PLC controller 12 will identify and compare according to the received wind speed data. When the detected wind speed exceeds the set maximum working threshold, it means that the strong wind force is large, and the needle body of the lightning rod body 3 is affected by the strong wind and is prone to shaking. At this time, the PLC controller 12 will start the electric push rod 402, push the movable plate 403 and the U-shaped plate 405 to move to one side, and drive the two protective plates 406 to move and leave from the top of the sealing ring 410. At this time, the two movable holes 40 9 loses its shielding protection, and then the PLC controller 12 will start the forward and reverse motor 803, and the rotation of the output end of the forward and reverse motor 803 drives one of the driving gears 806 to rotate clockwise, and drives the other driving gear 806 meshing with it to rotate counterclockwise, further drives the two rotating rods 802 and the corresponding two driven gears 811 to rotate in the opposite direction, and drives the insulating rod 805 near the rear side to rotate clockwise through the chain 809, and the insulating rod 805 near the front side to rotate counterclockwise, further drives the two insulating reinforcement rods 807 to rotate out of the corresponding active holes 409 respectively, and rotate toward the needle body of the lightning rod body 3, so that the two support clamps 810 rotate to the needle body of the lightning rod body 3, when the forward and reverse motor 803 is automatically closed, the two support clamps 810 are clamped on the outer surface of the needle body of the lightning rod body 3, as shown in FIG. Figure 5As shown, at this time, the protective strip 812 and the conductive sheet 908 are both in contact with the lightning rod body 3. Through the support assembly 8, the two support clips 810 are clamped at the needle body of the lightning rod body 3 to form a circular fixed ring. With the cooperation of the insulating reinforcement rod 807 and the insulating rod 805, the needle body of the lightning rod body 3 is supported auxiliaryly to increase the supporting force, form a stable structure, improve the overall stability, better resist the effect of wind force, and reduce the shaking amplitude. When the external wind force is small, the forward and reverse motor 803 is started again. At this time, the output end of the forward and reverse motor 803 will rotate in the opposite direction, causing the insulating rod 805 to rotate in the direction opposite to the previous rotation direction. , so that the two insulating reinforcement rods 807 drive the support clip 810 to leave the needle body of the lightning rod body 3 and rotate back to the inside of the lightning protection box 2 through the movable hole 409. At this time, the conductive sheet 908 is not in contact with the lightning rod body 3. When there is lightning, the lightning rod body 3 attracts the lightning to itself and safely introduces the lightning current into the earth through the lead wire and the grounding device, thereby protecting the transformer from damage by lightning overvoltage. The two conductive sheets 908 are in contact with the outer surface of the lightning rod body 3 through the support assembly 8. At the same time, when the insulating rod 805 rotates, it drives the insulating sleeve 813 and the inclined conductive rod 910 to rotate together, so that the two inclined conductive rods 910 One end rotates to the corresponding conductive column 906, at which time the inclined conductive rod 910 contacts the conductive column 906. When the lightning rod body 3 safely guides the lightning current underground through the lead wire and the grounding device, part of the current on the lightning rod body 3 will flow to the two conductive sheets 908, and then the current is guided to the inclined conductive rod 910 through the corresponding lightning rod 907 and the lead rod 909, and the current is guided to the U-shaped conductive rod 904 through the conductive column 906. The down conductor 905 is connected to the grounding device, and the U-shaped conductive rod 904 guides the current safely underground through the down conductor 905 and the grounding device. The support component 8 and the guide component 9 cooperate to share a part of the lightning current. In order to reduce the burden on the lightning rod body 3, the lightning current is guided underground more quickly, and the lightning protection effect of the transformer is improved. After the support component 8 is turned back into the lightning protection box 2, the electric push rod 402 is started again to pull the movable plate 403 and the U-shaped plate 405 toward the lightning rod body 3, and push the two protective plates 406 to move at the same time, so that the two protective plates 406 move to the top of the two sealing rings 410 to block and protect the two active holes 409. Under the action of the protective component 4, the equipment in the lightning protection box 2 is protected to prevent dust and impurities from falling onto the conductive sheet 908 through the active hole 409, thereby affecting the subsequent conductive effect of the conductive sheet 908.

[0044] Among them, the lightning rod body 3, the electric push rod 402, the anemometer 5, the fan 7, the forward and reverse motor 803, the dry-type transformer body 10 and the PLC controller 12 are all existing technologies, and their components and usage principles are all public technologies, so no excessive explanation is given here.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightning protection dry-type transformer, comprising a box (1) and a protection assembly (4), wherein a lightning protection box (2) is fixedly mounted on the top of the box (1), and a lightning rod body (3) is mounted at the center of the top of the box (1) by bolts, characterized in that: A support assembly (8) and a guide assembly (9) are arranged inside the lightning protection box (2); the support assembly (8) is used to assist in supporting the lightning rod body (3) during strong winds; the guide assembly (9) is used to assist in guiding the lightning current safely underground; and the protection assembly (4) is used to protect the support assembly (8) and the guide assembly (9); The support assembly (8) comprises two fixed seats (801), the interiors of the two fixed seats (801) are movably embedded with rotating rods (802), one end of the two rotating rods (802) is fixedly mounted with a driving gear (806), the other end of the two rotating rods (802) is fixedly mounted with a driven gear (811), the bottom surface of the interior of the lightning protection box (2) is fixedly mounted with a forward and reverse motor (803), and the outer surfaces of the two driven gears (811) are meshedly connected with a chain (8 09), the inner walls of the two chains (809) are meshedly connected with rotating gears (808), the outer surfaces of one side of the two rotating gears (808) are fixedly installed with insulating rods (805), the outer surfaces of the two insulating rods (805) are fixedly installed with insulating reinforcement rods (807), one end of the two insulating reinforcement rods (807) are fixedly installed with supporting clamps (810), and the inner walls of the two supporting clamps (810) are fixedly connected with protective strips (812) near both sides.

2. The lightning protection dry-type transformer according to claim 1, characterized in that: The output end of the forward and reverse motor (803) is fixedly connected to the outer surface of one side of one of the driving gears (806), the outer surfaces of the two driving gears (806) are meshed and connected, and the outer surfaces of the two insulating rods (805) are movably sleeved with two fixing plates (804), and the bottoms of the two fixing plates (804) are fixedly installed on the bottom surface inside the lightning protection box (2).

3. The lightning protection dry-type transformer according to claim 2, characterized in that: The guide assembly (9) comprises a U-shaped insulating tube (901), a U-shaped conductive rod (904) is fixedly installed inside the U-shaped insulating tube (901), conductive columns (906) are fixedly installed on the outer surface of the U-shaped conductive rod (904) near both ends, a down conductor (905) is fixedly connected to the outer surface of the U-shaped conductive rod (904), protective sleeves (903) are fixedly installed on the outer surface of the U-shaped insulating tube (901) near both ends, and lightning rods (907) are fixedly installed inside the two insulating reinforcement rods (807).

4. The lightning protection dry-type transformer according to claim 3 is characterized in that: The inner walls of the two support clamps (810) are fixedly connected with conductive sheets (908), one end of the two lightning rods (907) are respectively fixedly passed through the inside of the two support clamps (810), one end of the two lightning rods (907) are respectively fixedly connected to the outer surfaces of the two conductive sheets (908), and the other ends of the two lightning rods (907) are fixedly installed with electric rods (909).

5. The lightning protection dry-type transformer according to claim 4, characterized in that: The outer surfaces of the two lead-in rods (909) are fixedly mounted with inclined conductive rods (910), one end of the two inclined conductive rods (910) is respectively fixedly penetrated to the outer surfaces of the two insulating rods (805), the outer surfaces of the two inclined conductive rods (910) are fixedly sleeved with insulating sleeves (813), and the outer surfaces of one side of the two insulating sleeves (813) are respectively fixedly mounted on the outer surfaces of the two insulating rods (805).

6. The lightning protection dry-type transformer according to claim 5, characterized in that: One end of the two conductive pillars (906) is fixedly passed through the outer surface of the U-shaped insulating tube (901), and the outer surfaces of the two conductive pillars (906) are respectively fixedly installed on the inner walls of the two protective sleeves (903). One end of the down conductor (905) is fixedly passed through the U-shaped insulating tube (901) and the lightning protection box (2) to the outer surface. A plurality of connecting rods (902) are fixedly installed on the outer surface of the U-shaped insulating tube (901) near the bottom.

7. The lightning protection dry-type transformer according to claim 6, characterized in that: The bottom ends of the plurality of connecting rods (902) are fixedly mounted on the bottom surface of the lightning protection box (2), the two insulating rods (805) are provided with embedded grooves (814) inside, and the two ends of the two lead rods (909) are respectively fixedly mounted on both sides of the two embedded grooves (814).

8. The lightning protection dry-type transformer according to claim 1, characterized in that: The protection component (4) includes a mounting plate (401), an electric push rod (402) is fixedly installed inside the mounting plate (401), a movable plate (403) is fixedly installed at one end of the electric push rod (402), two support rods (404) are movably embedded inside the movable plate (403), one end of the two support rods (404) are fixedly installed on the outer surface of the lightning protection box (2), a U-shaped plate (405) is fixedly installed on the top of the movable plate (403), two protection plates (406) are fixedly installed on the outer surface of one side of the U-shaped plate (405), and two sliding columns (408) are fixedly installed at the bottom of the two protection plates (406).

9. The lightning protection dry-type transformer according to claim 8, characterized in that: Two movable holes (409) are provided on the top of the lightning protection box (2), and sealing rings (410) are fixedly connected to the top of the lightning protection box (2) near the two movable holes (409). Two slide grooves (407) are provided on the top of the lightning protection box (2) near the two movable holes (409), and the bottom ends of the plurality of slide columns (408) are movably embedded in the interior of the plurality of slide grooves (407), and the outer surface of the mounting plate (401) is fixedly mounted on the top surface inside the lightning protection box (2), and one end of the electric push rod (402) movably penetrates the outer surface of the lightning protection box (2).

10. The lightning protection dry-type transformer according to claim 1, characterized in that: An anemometer (5) is arranged near one side of the top of the box body (1); a PLC controller (12) is fixedly installed on the bottom surface of the interior of the lightning protection box (2) near the rear wall; a bottom plate (6) is fixedly installed on the bottom surface of the interior of the box body (1); a dry-type transformer body (10) is arranged on the top of the bottom plate (6); a fan (7) is arranged on the bottom of the dry-type transformer body (10); a mounting hole (11) is opened at the center of the top of the lightning protection box (2); the lightning rod body (3) is located inside the mounting hole (11); a drainage groove (13) is opened at the bottom of the lightning protection box (2); and the bottoms of the two fixing seats (801) are fixedly installed on the bottom surface of the interior of the lightning protection box (2).

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