A protective reinforcement device for indirect lightning of high voltage power supply

Abstract

The present invention discloses a protective reinforcement device for indirect lightning of a high-voltage power supply, and relates to the technical field of indirect lightning protection. It comprises a protective shell, and a partition fixing mechanism is installed inside the protective shell to divide the inside of the protective shell into two containing chambers. The present invention can protect the circuit from the influence of transient overvoltage through multi-stage protective components on the circuit board. During operation, the high-frequency noise and interference in the circuit can be effectively reduced for many times to improve the stability of the system. At the same time, the working signal of the civil aircraft can be included to ensure the normal flow of the working signal, which is conducive to fully protecting against high voltage and electromagnetic interference. By setting the protective shell in conjunction with the top cover, the high-voltage power supply body and the circuit board inside the protective shell can be fully protected. By setting the cooling mechanism, it is conducive to quickly cooling the circuit board, which is convenient for the circuit board to reduce the probability of overheating of its own components and causing protection failure when dealing with indirect lightning.

Description

Technical Field

[0001] The present invention relates to the technical field of indirect lightning protection, and in particular to a protection and reinforcement device for indirect lightning of a high-voltage power supply. Background Art

[0002] Indirect lightning refers to the phenomenon that during lightning activity, through direct strikes or induction effects of lightning on buildings or equipment, the voltage and current in their circuit systems surge, thereby causing damage to the equipment or system. Indirect lightning can be transmitted to equipment or buildings through various channels.

[0003] High-voltage power supply systems play an important role in power transmission and distribution. However, these systems are usually exposed outdoors or in complex environments and are extremely susceptible to lightning. In order to reduce the losses caused by indirect lightning, protective reinforcement devices against indirect lightning are needed to protect the high-voltage power supply.

[0004] Existing high-voltage power supply protection technologies include lightning rods, lightning arresters, electromagnetic shielding and filters, but these methods are not always ideal when facing the interference of the indirect effects of lightning. The existing technology has the following shortcomings: the high voltage and electromagnetic interference caused by the indirect effects of lightning are difficult to fully protect against. At the same time, the high-voltage power supply protection technology in the existing technology may fail due to its own overheating during the energy absorption process. Therefore, the adaptability and reliability of the existing high-voltage power supply protection in different environments need to be further improved, and thus the present invention is proposed. Summary of the invention

[0005] The object of the present invention is to provide a protection and reinforcement device for indirect lightning of a high voltage power supply, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a protective reinforcement device for indirect lightning of a high-voltage power supply, comprising a protective shell, wherein a partition fixing mechanism is installed inside the protective shell to divide the interior of the protective shell into two accommodating chambers, wherein a high-voltage power supply body is installed in one of the accommodating chambers, and a bearing mechanism is installed in the other accommodating chamber, and a detachable circuit board for protecting indirect lightning is installed on the bearing mechanism, a detachable top cover is installed on the top of the protective shell, mounting blocks are installed on the outer walls at both ends of the protective shell, a cooling mechanism for cooling the circuit board is installed at the bottom and inside of the protective shell, an exhaust mechanism is installed on the top cover, a slot is opened at the bottom of the outer wall of one side of the protective shell, the cooling mechanism comprises a top plate and a bottom plate plugged into the slot, and a mounting ring is embedded and installed on the outer wall of the protective shell located at the bottom of the circuit board, An intake fan is installed in the mounting ring, and a liquid storage box for storing coolant is embedded and installed at the other end of the top plate. A cooling column is embedded and installed at one end of the top plate at the bottom of the mounting ring. The cooling column is a hollow "honeycomb" structure. Infusion tubes for connecting the liquid storage box and the cooling column are embedded and installed on one side and the other side of the top plate. A first liquid pump for conveying the coolant in the liquid storage box to the cooling column is installed on the outer wall of one of the infusion tubes near one end of the cooling column, and a second liquid pump for conveying the coolant in the cooling column to the liquid storage box is installed on the outer wall of the other infusion tube near one end of the cooling column. Positioning columns are installed on the four corners of the bottom of the top plate, and positioning grooves are opened on the four corners of the top of the bottom plate. An air intake duct and a heat dissipation duct are respectively opened at one end and the other end of the top of the bottom plate, and the adaptation of the top plate and the bottom plate is completed by inserting the positioning columns into the positioning grooves.

[0007] Furthermore, a detachable "L-shaped" square air inlet pipe is sealed and inserted at the two air inlet ports of the air inlet duct, a filter plate is installed at the air inlet port of the square air inlet pipe, a rain shield is installed on the top of the square air inlet pipe, and air enters the air inlet duct through the gap between the square air inlet pipe and the rain shield. Hollow columns are rotatably connected to both ends of the inner wall of the bottom of the air inlet duct, and a plurality of blades with hollow structures inside are installed on the outer wall of the hollow column. A plurality of through holes are installed on the outer wall of the blade, and a desiccant is filled in the hollow part of the blade.

[0008] Furthermore, the exhaust mechanism is located at the top of the high-voltage power supply body, and the exhaust mechanism includes a fixing ring embedded in the top cover, an exhaust fan is installed in the fixing ring, a cone cover is installed on the top of the fixing ring, and air is discharged through the gap between the fixing ring and the cone cover.

[0009] Furthermore, the carrying mechanism includes two fixed rails installed on the inner wall of the bottom of another accommodating bin, two tripods are slidably connected between the two fixed rails, limiting slot blocks are installed at both ends of the bottom of the outer walls on opposite sides of the two tripods, a first fixing hole is opened on the limiting slot block, and a plurality of limiting holes are opened at both ends of the bottom inner wall of the other accommodating bin, and the positions of the limiting holes correspond to the positions of the first fixing holes on the limiting slot block, a cross block is installed on the top outer wall of the tripod, a sliding rod is embedded in the inner wall of the cross block, and a sliding block is slidably sleeved on both ends of the sliding rod, and the inner wall of the sliding block The walls are all installed with mounting slot blocks, the mounting slot blocks are provided with second fixing holes adapted to the mounting slots on the circuit board, the top of the cross block is provided with a plurality of fixing slots, the top of the slider is installed with a fixing block, the fixing block is provided with a third fixing hole adapted to the fixing slot, the fixing component is inserted into the limiting hole through the first fixing hole and the fixing component is inserted into the fixing slot through the third fixing hole to complete the fixing and limiting of the tripod and the slider, and circuit boards of different sizes can be adapted to be installed by adjusting the distance between the two tripods and the distance between the two sliders on the cross block in coordination with the second fixing hole.

[0010] Furthermore, the partition and fixing mechanism includes two fixing plates installed at one end of the inner wall of the bottom of the protective shell, a partition is slidably connected between the inner walls on both sides of the protective shell, a rubber spring is fixedly connected between the partition and the fixing plate, and one and several mounting positions are respectively installed on the outer wall of the partition and the outer wall at the other end of the protective shell, and the mounting positions include circular grooves opened on the outer wall of the partition and the outer wall at the other end of the protective shell, and several mounting grooves surrounding the circular grooves.

[0011] Furthermore, two connectors are plugged into the circuit board, and the connector includes two connectors and a connecting wire. The connecting wire is installed between the two connectors. A square plate is installed on the connector, and a plurality of mounting holes are opened on the square plate. The connector and the mounting holes are adapted to the mounting position. A plurality of mounting posts adapted to the mounting holes are installed at the connector plug-in position on the circuit board. One of the connectors is installed on the circuit board through the mounting posts and the mounting holes in cooperation with the fixing components. The other connector of one of the connectors is fixedly plugged into the plug-in position in the high-voltage power supply body through the mounting holes and the fixing components in cooperation with the mounting position on the partition. A U-shaped groove is opened on the outer wall of the protective shell, and the connecting wire in the other connector is located in the U-shaped groove. The bottom outer wall of the top cover is installed with a plug-in block adapted to the U-shaped groove and the connecting wire.

[0012] Furthermore, a plurality of heat sinks with holes and grooves on the surface are installed at the bottom of the liquid storage box, the interior of the protective shell and the interior of the top cover are filled with an insulating layer, a plurality of water guide grooves are opened on the top cover, a plurality of grounding wires are installed on the protective shell, and conductive paint is applied on the protective shell, the top cover and the mounting block.

[0013] Furthermore, the circuit board is integrated with multi-level protection components for dealing with indirect lightning, and the multi-level protection components include: primary protection components, secondary protection components and tertiary protection components. The primary protection components are transient suppression diodes, the secondary protection components are low-pass filters, and the tertiary protection components are through-hole capacitors and double-row grounding capacitors. Through the coordination of multi-level protection components, high voltage and high-frequency noise generated by lightning strikes can be absorbed, and high-frequency interference can be prevented from flowing back into the circuit.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The protective reinforcement device for indirect lightning of a high-voltage power supply can protect the circuit from transient overvoltage through multi-stage protective components on the circuit board. During operation, the high-frequency noise and interference in the circuit can be effectively reduced for multiple times to improve system stability. At the same time, the working signal of a civil aircraft can be included to ensure the normal flow of the working signal, which is conducive to full protection against high voltage and electromagnetic interference. The protective shell and the top cover can be used to provide all-round protection for the high-voltage power supply body and the circuit board inside the protective shell. The cooling mechanism can be used to quickly cool the circuit board, which is convenient for reducing the probability of protection failure caused by overheating of the components of the circuit board itself when the circuit board copes with indirect lightning.

[0016] At the same time, the rain shield and cone cover can be used to block rain and reduce the probability of rainwater entering the air inlet when it rains. The hollow columns, blades and desiccant in the blades can be used to dry the air entering the protective shell to avoid humid air from contacting the circuit board and causing damage to the circuit board, which is beneficial to extending the service life of the circuit board. At the same time, the top plate and the bottom plate are easy to disassemble, which is beneficial to replace the desiccant in the blades. The supporting mechanism can be used to support the circuit board and install it at a high place inside the protective shell, which helps the hot air to rise naturally, improves the heat dissipation effect through natural convection, and helps to keep the circuit board at a lower working temperature. The position of the tripod and the slider in the supporting mechanism is easy to adjust, which is beneficial to adapt to the installation of circuit boards of different sizes.

[0017] At the same time, the heat of the coolant in the liquid storage box can be conducted out through the heat sink, the contact area is increased, and the heat dissipation effect is enhanced. The insulating layer can reduce external influences. The grounding wire can reduce electromagnetic interference, which helps to stabilize the voltage level in the circuit. At the same time, grounding can help discharge static electricity accumulation and prevent static electricity from damaging electronic components. The conductive coating can provide a conductive path so that the lightning current can be smoothly conducted to the ground through the coating, reducing the direct damage to the equipment caused by lightning strikes, which is conducive to effectively dispersing lightning energy and reducing the impact on the underlying materials. At the same time, the conductive coating can form an electromagnetic shielding layer to reduce the impact of external electromagnetic interference on the equipment and protect the normal operation of the electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the protective shell of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of a partial cooling mechanism of the present invention;

[0021] Figure 4 It is a schematic diagram of the bottom structure of the top plate of the present invention;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the top of the bottom plate and the square air intake pipe of the present invention;

[0023] Figure 6 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the top cover of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the bearing mechanism of the present invention;

[0026] Fig. 9 It is a schematic diagram of the connector structure of the present invention;

[0027] Fig.10 It is a schematic diagram of the indirect lightning protection structure of the present invention;

[0028] Fig.11 It is a schematic diagram of the structure of the transient voltage suppression diode circuit of the present invention;

[0029] Fig.12 This is a schematic diagram of the wiring structure of the transient voltage suppression diode of the present invention.

[0030] In the figure: 1. protective shell; 2. mounting block; 3. cooling mechanism; 301. mounting ring; 302. air intake fan; 303. liquid storage box; 304. infusion tube; 305. top plate; 306. positioning column; 307. first liquid pump; 308. cooling column; 309. second liquid pump; 310. heat sink; 311. bottom plate; 312. heat dissipation channel; 313. air intake channel; 314. positioning groove; 315. square air intake pipe; 316. filter plate; 317. rain shield; 318. hollow column; 319. blade; 320. through hole; 4. grounding wire; 5. top cover; 6. exhaust mechanism; 601. fixing ring; 602. exhaust fan; 603. cone cover; 7. circuit board; 8. high voltage power supply Main body; 9, insulating layer; 10, fixing position; 1001, round groove; 1002, mounting groove; 11, partition fixing mechanism; 1101, partition; 1102, rubber spring; 1103, fixing plate; 12, connector; 1201, connector; 1202, connecting line; 1203, square plate; 1204, mounting hole; 1205, mounting column; 13, bearing mechanism; 1301, limiting hole; 1302, fixing track; 1303, tripod; 1304, slider; 1305, horizontal block; 1306, fixing block; 1307, mounting groove block; 1308, fixing groove; 1309, slide bar; 1310, limiting groove block; 14, U-shaped groove; 15, water guide groove; 16, plug block. DETAILED DESCRIPTION

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

[0032] Indirect lightning protection can effectively reduce the direct impact of lightning on high-voltage power supply systems, reduce the risk of equipment failure, damage or fire, and thus improve the safety of the overall system. Through indirect lightning protection of multi-level protection components, it can reduce the damage to equipment caused by lightning, thereby reducing the maintenance cost of repairing and replacing equipment. During the use of the device, it should be ensured that there is sufficient coolant inside the liquid storage box to ensure normal cooling and heat dissipation.

[0033] like Figure 1-Figure 12As shown, the present invention provides a technical solution: a protective reinforcement device for indirect lightning of a high-voltage power supply, comprising a protective shell 1, a partition fixing mechanism 11 is installed inside the protective shell 1 to divide the interior of the protective shell 1 into two accommodating chambers, a high-voltage power supply body 8 is installed in one of the accommodating chambers, a bearing mechanism 13 is installed in the other accommodating chamber, a detachable circuit board 7 for protecting indirect lightning is installed on the bearing mechanism 13, a detachable top cover 5 is installed on the top of the protective shell 1, mounting blocks 2 are installed on both ends of the outer walls of the protective shell 1, a cooling mechanism 3 for cooling the circuit board 7 is installed at the bottom and inside of the protective shell 1, an exhaust mechanism 6 is installed on the top cover 5, a slot is opened at the bottom of the outer wall of one side of the protective shell 1, the cooling mechanism 3 includes a top plate 305 and a bottom plate 311 plugged into the slot, an outer wall of the protective shell 1 is located at the bottom of the circuit board 7 and is embedded with a mounting ring 301, an air intake fan 302 is installed in the mounting ring 301, and a cooling fan 302 is installed at the other end of the top plate 305. The top plate 305 is provided with a liquid storage box 303, one end of the top plate 305 is located at the bottom of the mounting ring 301 and is embedded with a cooling column 308. The cooling column 308 is a hollow "honeycomb" structure. One side and the other side of the top plate 305 are embedded with infusion tubes 304 for connecting the liquid storage box 303 and the cooling column 308. One end of the outer wall of one infusion tube 304 close to the cooling column 308 is installed with a first liquid pump 307 for transporting the coolant in the liquid storage box 303 to the cooling column 308, and the other end of the infusion tube 304 is provided with a first liquid pump 307 for transporting the coolant in the liquid storage box 303 to the cooling column 308. A second liquid pump 309 for conveying the coolant in the cooling column 308 to the liquid storage box 303 is installed on the outer wall of the tube 304 near one end of the cooling column 308, positioning columns 306 are installed on the four corners of the bottom of the top plate 305, and positioning grooves 314 are opened on the four corners of the top of the bottom plate 311. An air inlet duct 313 and a heat dissipation duct 312 are respectively opened at one end and the other end of the top of the bottom plate 311, and the adaptation of the top plate 305 and the bottom plate 311 is completed by inserting the positioning columns 306 into the positioning grooves 314.

[0034] It should be noted that, by setting the protective shell 1 in conjunction with the top cover 5, the high-voltage power supply body 8 and the circuit board 7 inside the protective shell 1 can be fully protected. The protective shell 1 and the top cover 5 are made of 6061 aluminum alloy. During the surface treatment, the paint is sprayed to enhance the corrosion resistance and aesthetics. The quenching heat treatment optimizes the mechanical properties of the metal to improve the strength of the protective shell 1 and the top cover 5, which is conducive to fully protecting the high-voltage power supply body 8 and the circuit board 7 inside the protective shell 1. The interior of the protective shell 1 is separated into two parts by the separation and fixing mechanism 11. When maintenance or replacement of parts is required, the separated storage can obtain the high voltage more quickly. The power supply body 8 and the circuit board 7 reduce risks and help improve maintenance efficiency. The circuit board 7 is supported and installed at a high place inside the protective shell 1 through the bearing mechanism 13, which helps the hot air to rise naturally, improves the heat dissipation effect through natural convection, helps to keep the circuit board 7 at a lower operating temperature, and is convenient for use. The cooling mechanism 3 is set to help quickly cool the circuit board 7, which is convenient for the circuit board 7 to reduce the probability of overheating of its own components and causing protection failure when responding to indirect lightning. The exhaust mechanism 6 is set, and the exhaust mechanism 6 is located at the top of the high-voltage power supply body 8. The cooling air outlet of the cooling mechanism 3 The opening is at the bottom of the circuit board 7, which is conducive to fully cooling the circuit board 7, and also has a cooling effect on the high-voltage power supply body 8, which is convenient for use. When the circuit board 7 and the high-voltage power supply body 8 need to be cooled and dissipated, the air intake fan 302 is started to allow the outside air to pass through the air intake duct 313 and enter the interior of the protective shell 1 through the cooling column 308. When the air passes through the cooling column 308, the air is cooled by the coolant in the cooling column 308, and then the circuit board 7 can be fully cooled when entering the interior of the protective shell 1. The coolant in the liquid storage box 303 is pumped out by the first liquid pump 3 07, the coolant in the liquid storage box 303 is transported to the cooling column 308, and then the coolant in the cooling column 308 is transported back to the liquid storage box 303 through the action of the second liquid pump 309, so as to form a liquid circulation circuit. The heat dissipation channel 312 is provided to facilitate the contact between air and the liquid storage box 303, so as to cool down the coolant in the liquid storage box 303. The top plate 305 and the bottom plate 311 are plugged and connected by the positioning column 306 and the positioning groove 314. At the same time, the top plate 305 and the bottom plate 311 are plugged into the slot after being installed in coordination, so as to facilitate the subsequent repair or maintenance of the components in the cooling mechanism 3.

[0035] like Figure 5 and Figure 6As shown, the two air inlets of the air inlet duct 313 are sealed and plugged with a detachable "L-shaped" square air inlet pipe 315, a filter plate 316 is installed at the air inlet port of the square air inlet pipe 315, and a rain shield 317 is installed on the top of the square air inlet pipe 315. The air enters the air inlet duct 313 through the gap between the square air inlet pipe 315 and the rain shield 317. Both ends of the inner wall at the bottom of the air inlet duct 313 are rotatably connected with a hollow column 318, and a plurality of blades 319 with a hollow structure inside are installed on the outer wall of the hollow column 318, and a plurality of through holes 320 are installed on the outer wall of the blade 319, and the hollow part of the blade 319 is filled with a desiccant.

[0036] It should be noted that when the intake fan 302 is started, the air enters the intake duct 313 through the square intake pipe 315. When it is necessary to disassemble the top plate 305 and the bottom plate 311, one of the square intake pipes 315 can be disassembled. The air entering the intake duct 313 can be filtered by the filter plate 316. The rain shield 317 can be used to shield the rain, thereby reducing the probability of rainwater entering the intake duct 313 when it rains. At the same time, when the intake fan 302 is started, the hollow column 318 and the blade 319 will be driven to rotate. The desiccant in the blade 319 and the through hole 320 can be used to dry the humid air, thereby preventing the humid air from entering the interior of the protective shell 1 and preventing the humid air from contacting the circuit board 7 and causing damage to the circuit board 7, thereby extending the service life of the circuit board 7. At the same time, the top plate 305 and the bottom plate 311 are easy to disassemble, thereby facilitating the replacement of the desiccant in the blade 319.

[0037] like Figure 7 As shown, the exhaust mechanism 6 is located at the top of the high-voltage power supply body 8, and the exhaust mechanism 6 includes a fixed ring 601 embedded in the top cover 5, an exhaust fan 602 is installed in the fixed ring 601, and a cone cover 603 is installed on the top of the fixed ring 601. The air is discharged through the gap between the fixed ring 601 and the cone cover 603.

[0038] It should be noted that by starting the exhaust fan 602, the air in the protective shell 1 can be discharged, which is beneficial to heat dissipation. The conical cover 603 can be set to block rainwater, reducing the probability of rainwater entering the inside of the protective shell 1, which is beneficial to extending the service life of the electronic components inside the protective shell 1.

[0039] like Figure 3 and Figure 8As shown, the carrying mechanism 13 includes two fixed rails 1302 installed on the inner wall of the bottom of another accommodating bin, two tripods 1303 are slidably connected between the two fixed rails 1302, and limiting slot blocks 1310 are installed at both ends of the bottom of the outer walls on the opposite sides of the two tripods 1303. The limiting slot blocks 1310 are provided with a first fixing hole, and a plurality of limiting holes 1301 are provided at both ends of the bottom inner wall of the other accommodating bin, and the positions of the limiting holes 1301 correspond to the positions of the first fixing holes on the limiting slot blocks 1310. A cross block 1305 is installed on the top outer wall of the tripod 1303, and a sliding rod 1309 is embedded in the inner wall of the cross block 1305. A slider 1304 is slidably sleeved on both ends of the slider 1309, and the inner wall of the slider 1304 Both are installed with mounting slot blocks 1307, on which a second fixing hole adapted to the mounting slot on the circuit board 7 is opened, a plurality of fixing slots 1308 are opened on the top of the cross block 1305, a fixing block 1306 is installed on the top of the slider 1304, on which a third fixing hole adapted to the fixing slot 1308 is opened, the fixing component is plugged into the limiting hole 1301 through the first fixing hole and the fixing component is plugged into the fixing slot 1308 through the third fixing hole to complete the fixed limiting of the tripod 1303 and the slider 1304, and the circuit boards 7 of different sizes can be adapted to be installed by adjusting the distance between the two tripods 1303 and the distance between the two sliders 1304 on the cross block 1305 in coordination with the second fixing hole.

[0040] It should be noted that the fixing component is a bolt, and the first fixing hole, the second fixing hole and the third fixing hole are all thread grooves adapted to the bolts. The bolts and the bearing mechanism 13 are made of non-metallic materials. For example, when the non-metallic material is conductive plastic, it can effectively shield electromagnetic interference while maintaining the light weight and easy processing characteristics of the plastic; when the non-metallic material is a polymer-based composite material, this type of material can provide a certain electromagnetic shielding effect while still maintaining a low weight and good processability. By adjusting the spacing between the two tripods 1303 and the spacing between the two sliders 1304, it can be adapted Installing circuit boards 7 of different sizes is convenient for use and enhances applicability. After adjusting the position between the two tripods 1303, insert the bolt into the limiting hole 1301 through the first fixing hole on the limiting slot block 1310 to fix the position on the two tripods 1303. After adjusting the position on the slider 1304, insert the bolt into the fixing slot 1308 through the third fixing hole on the fixing block 1306 to fix the installation position. Then align the installation hole of the circuit board 7 with the second fixing hole on the slider 1304 and cooperate with the bolt to fix the position of the circuit board 7, which is convenient for use.

[0041] like Figure 3 and Figure 8As shown, the partition and fixing mechanism 11 includes two fixing plates 1103 installed at one end of the inner wall at the bottom of the protective shell 1, a partition 1101 is slidably connected between the inner walls on both sides of the protective shell 1, a rubber spring 1102 is fixedly connected between the partition 1101 and the fixing plate 1103, and one and a plurality of mounting positions 10 are respectively installed on the outer wall of the partition 1101 and the outer wall at the other end of the protective shell 1. The mounting position 10 includes a circular groove 1001 opened on the outer wall of the partition 1101 and the outer wall at the other end of the protective shell 1, and a plurality of mounting grooves 1002 surrounding the circular groove 1001.

[0042] It should be noted that by setting the rubber spring 1102, the fixed plate 1103 and the partition 1101, the space inside the protective shell 1 can be divided into two accommodating chambers. By setting the rubber spring 1102, the size of the two accommodating chambers can be adjusted according to the size of the high-voltage power supply body 8, which is convenient for use. At the same time, by using the rubber spring 1102 in conjunction with the partition 1101, the position of the high-voltage power supply body 8 can be fixed.

[0043] like Figure 3 , Figure 7 , Figure 8 and Fig. 9 As shown, two connectors 12 are plugged into the circuit board 7. The connector 12 includes two connectors 1201 and a connecting wire 1202. The connecting wire 1202 is installed between the two connectors 1201. A square plate 1203 is installed on the connector 1201. A plurality of mounting holes 1204 are provided on the square plate 1203. The connectors 1201 and the mounting holes 1204 are adapted to the mounting position 10. A plurality of mounting posts 1205 adapted to the mounting holes 1204 are installed at the plug-in position of the connector 12 on the circuit board 7. One of the two connectors 12 is connected to the mounting position 10. The connectors 1201 are all installed on the circuit board 7 through the mounting column 1205 and the mounting hole 1204 in conjunction with the fixing component. The other connector 1201 of one of the connectors 12 is fixedly plugged into the plug-in position in the high-voltage power supply body 8 through the mounting hole 1204 and the fixing component in conjunction with the mounting position 10 on the partition 1101. A U-shaped groove 14 is opened on the outer wall of the protective shell 1. The connecting wire 1202 in the other connector 12 is located in the U-shaped groove 14. The bottom outer wall of the top cover 5 is installed with an insert block 16 that is compatible with the U-shaped groove 14 and the connecting wire 1202.

[0044] It should be noted that by setting the mounting position 10 to cooperate with the mounting hole 1204 and the bolt in the connector 12 and by using the mounting column 1205 on the circuit board 7 to cooperate with the mounting hole 1204 and the bolt in the connector 12, the installation position of the connector 1201 in the connector 12 can be fixed, so that the connector 12 is more stable when plugged in and is not easy to fall off. The U-shaped groove 14 is set to facilitate the placement of the connecting wire 1202. The plug block 16 is set to improve the sealing of the protective shell 1 when it cooperates with the top cover 5. The several mounting positions 10 on the partition 1101 can facilitate air circulation and the installation of the connector 12 according to usage requirements.

[0045] like Figure 4 and Figure 5 As shown, a plurality of heat sinks 310 with holes and grooves on the surface are installed at the bottom of the liquid storage box 303, the interior of the protective shell 1 and the interior of the top cover 5 are filled with an insulating layer 9, a plurality of water guide grooves 15 are opened on the top cover 5, a plurality of grounding wires 4 are installed on the protective shell 1, and conductive paint is applied on the protective shell 1, the top cover 5 and the mounting block 2.

[0046] It should be noted that, through the heat sink 310, the heat of the coolant in the liquid storage box 303 can be conducted out, the contact area is increased, and the heat dissipation effect is enhanced; through the insulating layer 9, the external influence can be reduced; through the grounding wire 4, the electromagnetic interference can be reduced, which helps to stabilize the voltage level in the circuit; at the same time, grounding can help discharge static electricity accumulation and prevent static electricity from damaging electronic components; through the conductive coating, a conductive path can be provided so that the lightning current can be smoothly conducted to the ground through the coating, reducing the direct damage to the equipment caused by lightning strikes, which is conducive to effectively dispersing lightning energy and reducing the impact on the underlying material; at the same time, the conductive coating can form an electromagnetic shielding layer, reduce the impact of external electromagnetic interference on the equipment, and protect the normal operation of the electronic equipment; through the water guide groove 15, a hydrophobic effect can be achieved.

[0047] like Figure 10-12 As shown, the circuit board 7 is integrated with multi-level protection components for dealing with indirect lightning, and the multi-level protection components include: primary protection components, secondary protection components and tertiary protection components. The primary protection components are transient suppression diodes, the secondary protection components are low-pass filters, and the tertiary protection components are through-hole capacitors and double-row grounding capacitors. Through the coordination of the multi-level protection components, the high voltage and high-frequency noise generated by lightning strikes can be absorbed, and at the same time, high-frequency interference can be prevented from flowing back into the circuit.

[0048] It should be noted that the transient suppression diode is used to protect the circuit from transient overvoltage. It protects the normal operation of the circuit by quickly conducting and absorbing overvoltage. The low-pass filter with a bandwidth of 0~10MHz is used to include the working signal of civil aircraft to ensure the normal flow of the working signal. At the same time, the interference signal outside the passband is filtered twice. The low-pass filter mainly uses LC filter, which contains capacitors and inductors. The inductor element can provide guarantee for the response of the gas discharge tube in the first stage, which is convenient for use. The through-hole capacitor can further remove high-frequency interference components and improve the quality. The double-row grounding capacitor can effectively reduce the high-frequency noise and interference in the circuit. At the same time, the influence of ground interference is reduced by grounding to improve the stability of the system. It is particularly important to select the type of transient suppression diode. is the open circuit voltage of the lightning waveform, is the lightning waveform source impedance, is the clamping voltage of the TVS diode, is the load impedance, For short-circuit current, due to the long installation wiring of the transient suppression diode, the parasitic inductance and resistance will cause a certain voltage on the wiring, resulting in the voltage at the load end being the sum of the transient suppression diode clamping voltage and the voltage of the transient suppression diode installation wiring. Therefore, a reasonable installation wiring of the transient suppression diode is critical to the design of indirect lightning protection and should be adopted in actual projects. Fig.12 In the installation method B, try to minimize the trace length of the transient suppression diode of the shunt device.

[0049] Embodiment: When selecting a transient suppression diode, a transient suppression diode is preset, several lightning waveforms are preset, the short-circuit current is obtained, and the source impedance of the applied waveform is calculated. For different waveforms, the signal generator is inconsistent. For different levels, the signal generator of the same waveform is consistent. Therefore, when calculating the source impedance, the level data can be preset for calculation. The source impedance of each waveform can be calculated using the following formula:

[0050] ;

[0051] When the TVS diode is conducting, calculate the transient current of the TVS diode. :

[0052] ;

[0053] When the transient suppression diode is in the conducting state, calculate the transient power that the transient suppression diode can withstand. :

[0054] ;

[0055] Calculate waveform pulse width For waveform 3, there are two waveforms, 1MHz and 10MHz. The 1MHz frequency waveform has a wider width and greater energy. Therefore, for waveform 3, only the waveform at 1MHz is calculated. Since waveform 3 is a damped sine or cosine waveform, its waveform pulse width is generally calculated to 50% of its maximum peak value, that is, the positive peak value of the fifth sine or cosine waveform. For waveforms 4 and 5, since the test waveform error is ±20%, the wider the waveform width, the greater its energy, so the pulse width at +20% is calculated. The pulse width of each waveform can be calculated using the following formula:

[0056] ;

[0057] Since the maximum pulse power given in the device manual of transient suppression diode is generally ( Rise time The following table shows the curves of the lightning test waveform pulse power and Pulse power comparison table.

[0058] Lightning test waveform pulse power and Pulse power comparison table:

[0059] ;

[0060] Through the lightning test waveform pulse power and The pulse power comparison table can be used to select the appropriate TVS diode.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A protective reinforcement device for indirect lightning of a high voltage power supply, comprising a protective shell (1), characterized in that: The protective shell (1) is internally installed with a partition fixing mechanism (11) to divide the interior of the protective shell (1) into two accommodating chambers, one of which is installed with a high-voltage power supply body (8), and the other is installed with a bearing mechanism (13), on which a detachable circuit board (7) for protecting against indirect lightning is installed, a detachable top cover (5) is installed on the top of the protective shell (1), both ends of the outer wall of the protective shell (1) are installed with mounting blocks (2), and a cooling mechanism (3) for cooling the circuit board (7) is installed at the bottom and inside of the protective shell (1), and a detachable top cover (5) is installed on the top of the protective shell (1). An exhaust mechanism (6) is installed on the cover (5); a slot is provided at the bottom of an outer wall of one side of the protective shell (1); the cooling mechanism (3) comprises a top plate (305) and a bottom plate (311) inserted into the slot; a mounting ring (301) is embedded and installed on the outer wall of the protective shell (1) at the bottom of the circuit board (7); an air intake fan (302) is installed in the mounting ring (301); one end of the top plate (305) is located at the bottom of the mounting ring (301) and is embedded and installed with a cooling column (308); the other end of the top plate (305) is embedded and installed with a liquid storage box (303) for storing coolant; the cooling column ( The top plate (305) is a hollow honeycomb structure, and one side and the other side of the top plate (305) are embedded with a liquid infusion tube (304) for connecting the liquid storage box (303) and the cooling column (308), wherein one end of the outer wall of one of the liquid infusion tubes (304) close to the cooling column (308) is installed with a first liquid pump (307) for transporting the coolant in the liquid storage box (303) to the cooling column (308), and the other end of the outer wall of the other liquid infusion tube (304) close to the cooling column (308) is installed with a second liquid pump (307) for transporting the coolant in the cooling column (308) to the liquid storage box (303). 09), positioning columns (306) are installed at the four corners of the bottom of the top plate (305), positioning grooves (314) are opened at the four corners of the top of the bottom plate (311), and an air intake duct (313) and a heat dissipation duct (312) are opened at one end and the other end of the top of the bottom plate (311), respectively. When the air intake fan is started, the outside air enters the interior of the protective shell through the air intake duct and the cooling column, and the heat dissipation duct allows the air to contact the liquid storage box to cool the coolant in the liquid storage box. The top plate (305) and the bottom plate (311) are adapted by inserting the positioning columns (306) into the positioning grooves (314); The partition fixing mechanism (11) comprises two fixing plates (1103) mounted on one end of the inner wall at the bottom of the protective shell (1); a partition plate (1101) is slidably connected between the inner walls at both sides of the protective shell (1); a rubber spring (1102) is fixedly connected between the partition plate (1101) and the fixing plate (1103); a plurality of mounting positions (10) are mounted on the outer wall of the partition plate (1101) facing the high-voltage power source body (8); a mounting position (10) is mounted on the outer wall of the protective shell (1) and the high-voltage power source body (8); the mounting position (10) comprises a circular groove (1001) opened on the outer wall of the partition plate (1101) and on the outer wall at the other end of the protective shell (1) and a plurality of mounting grooves (1002) surrounding the circular groove (1001); Two connectors (12) are plugged into the circuit board (7), the connector (12) comprising two connectors (1201) and a connecting wire (1202), the connecting wire (1202) being installed between the two connectors (1201), a square plate (1203) being installed on the connector (1201), a plurality of mounting holes (1204) being provided on the square plate (1203), the connectors (1201) and the mounting holes (1204) being compatible with the mounting positions (10), a plurality of mounting posts (1205) being installed at the plug-in position of the connector (12) on the circuit board (7), one of the two connectors (12) being connected to the mounting position (10). The connectors (1201) are all mounted on the circuit board (7) through mounting posts (1205) and mounting holes (1204) in conjunction with a fixing assembly, the other connector (1201) of one of the connectors (12) is fixedly plugged into a plugging position in the high-voltage power source body (8) through the mounting hole (1204) and the fixing assembly in conjunction with a mounting position (10) on the partition (1101), a U-shaped groove (14) is provided on the outer wall of the protective shell (1), a connecting wire (1202) in the other connector (12) is located in the U-shaped groove (14), and a plug block (16) adapted to the U-shaped groove (14) and the connecting wire (1202) is installed on the bottom outer wall of the top cover (5); The circuit board (7) is integrated with multi-level protection components for dealing with indirect lightning, the multi-level protection components comprising: a primary protection component, a secondary protection component and a tertiary protection component, the primary protection component being a transient suppression diode, the secondary protection component being a low-pass filter with a bandwidth of 0-10 MHz, and the tertiary protection component being a feedthrough capacitor and a double-row grounding capacitor.

2. A protective reinforcement device for indirect lightning of a high voltage power supply according to claim 1, characterized in that: A detachable L-shaped square air inlet pipe (315) is sealed and plugged at the two air inlet ports of the air inlet duct (313); a filter plate (316) is installed at the air inlet port of the square air inlet pipe (315); a rain shield (317) is installed at the top of the square air inlet pipe (315); air enters the air inlet duct (313) through the gap between the square air inlet pipe (315) and the rain shield (317); hollow columns (318) are rotatably connected at both ends of the inner wall at the bottom of the air inlet duct (313); a plurality of blades (319) with a hollow structure inside are installed on the outer wall of the hollow column (318); a plurality of through holes (320) are installed on the outer wall of the blade (319); and a desiccant is filled in the hollow part of the blade (319).

3. A protective reinforcement device for indirect lightning of high voltage power supply according to claim 1, characterized in that: The exhaust mechanism (6) is located at the top of the high-voltage power supply body (8), and comprises a fixing ring (601) embedded in the top cover (5), an exhaust fan (602) is installed in the fixing ring (601), and a cone cover (603) is installed on the top of the fixing ring (601), and air is discharged through a gap between the fixing ring (601) and the cone cover (603).

4. A protective reinforcement device for indirect lightning of high voltage power supply according to claim 1, characterized in that: The bearing mechanism (13) comprises two fixed rails (1302) installed on the inner wall of the bottom of another accommodating bin, two tripods (1303) are slidably connected between the two fixed rails (1302), limiting slot blocks (1310) are installed at both ends of the bottom of the outer wall on the opposite side of the two tripods (1303), and the limiting slot blocks (1310) are provided with a first fixing hole, and a plurality of limiting holes (1301) are opened at both ends of the inner wall of the bottom of the other accommodating bin, and the positions of the limiting holes (1301) correspond to the positions of the first fixing holes on the limiting slot blocks (1310), and a cross block (1305) is installed on the top outer wall of the tripod (1303), and a sliding rod (1309) is embedded in the inner wall of the cross block (1305), and a sliding block (1304) is slidably sleeved on both ends of the sliding rod (1309), and the inner wall of the sliding block (1304) Both are provided with mounting slot blocks (1307), the mounting slot blocks (1307) are provided with second fixing holes adapted to the mounting slots on the circuit board (7), the top of the cross block (1305) is provided with a plurality of fixing slots (1308), the top of the slider (1304) is provided with a fixing block (1306), the fixing block (1306) is provided with a third fixing hole adapted to the fixing slot (1308), the fixing assembly is plugged into the limiting hole (1301) through the first fixing hole and the fixing assembly is plugged into the fixing slot (1308) through the third fixing hole to complete the fixing and limiting of the tripod (1303) and the slider (1304), and circuit boards (7) of different sizes can be adapted to be installed by adjusting the spacing between the two tripods (1303) and the spacing between the two sliders (1304) on the cross block (1305) in coordination with the second fixing holes.

5. The protective reinforcement device for indirect lightning of high voltage power supply according to claim 1, characterized in that: The bottom of the liquid storage box (303) is provided with a plurality of heat sinks (310) with holes and grooves on the surface. The interior of the protective shell (1) and the interior of the top cover (5) are filled with an insulating layer (9). The top cover (5) is provided with a plurality of water guide grooves (15). The protective shell (1) is provided with a plurality of grounding wires (4). The protective shell (1), the top cover (5) and the mounting block (2) are coated with conductive paint.

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