A lightning protection device for a broadcast television signal transmitting tower

Abstract

This invention relates to the field of lightning protection devices, and more particularly to a lightning protection device for a broadcast television signal transmission tower. It includes a lightning arrester; a fixing part; a support part; a detection component for acquiring the current value flowing through the lightning arrester when it is in a point discharge state; an analysis component for comparing the current value with a corresponding current threshold and determining whether to adjust the target height of the lightning arrester based on the comparison result; and a telescopic part for responding to the analysis component to adjust the height of the lightning arrester to a safe height. This invention detects the current value flowing through the lightning protection device in real time, and by comparing the current value with a preset current threshold, it can intuitively determine whether the lightning protection device has effectively provided protection. The telescopic part can automatically adjust the height of the lightning arrester according to the instructions of the analysis component to adapt to lightning strikes of different intensities. This invention improves the flexibility of the lightning protection device, ensuring that it provides effective protection under various lightning strike conditions, thereby effectively improving the safety of the lightning protection device.

Description

Technical Field

[0001] This invention relates to the field of lightning protection devices, and more particularly to a lightning protection device for a broadcast television signal transmission tower. Background Technology

[0002] Broadcast and television signal transmission towers are typically installed at high altitudes, and their transmitting antennas contain numerous sophisticated electronic devices, making them highly vulnerable to lightning strikes. A lightning strike can severely damage broadcast and television equipment, affecting safe broadcasting, and may even cause fires or explosions, leading to major broadcast accidents. Lightning protection devices, such as lightning rods and lightning protection nets, can effectively divert lightning energy to the ground, preventing direct strikes to the transmission tower and its equipment, thus protecting the transmitting equipment from damage.

[0003] Therefore, improving the safety of lightning protection devices and ensuring their protective function during lightning strikes is crucial for the normal operation of broadcast television signal transmission towers. For example, existing technology discloses a lightning arrester that connects bakelite to a shunt via a coil. The shunt includes a cavity and a sealing cover, with a first terminal and a second terminal at both ends of the cavity. Within the cavity, the first and second terminals are respectively connected to a graphite sheet module. A first connecting piece is connected to the bakelite, and a second connecting piece is connected to the first terminal. The first and second connecting pieces are connected via the coil. The first connecting piece is used to connect to a power module, the second connecting piece is used to connect to a power consumption module, and the second terminal is used for grounding. This device not only has a simple structure and good shunt effect but is also easy to maintain, effectively reducing damage to the power module caused by lightning strikes.

[0004] However, the above-mentioned surge arrester technical solutions cannot detect the current value flowing through the surge arrester after a lightning strike in real time, cannot know whether the surge arrester is effectively playing a protective role, and cannot promptly and effectively adapt to lightning strikes of different intensities by changing the existing structure of the surge arrester when the surge arrester cannot effectively conduct lightning strikes, thus resulting in low safety of the surge arrester. Summary of the Invention

[0005] The purpose of this invention is to provide a lightning protection device for broadcast television signal transmission towers, so as to solve the problems in related technologies where it is impossible to detect the current value flowing through the lightning protection device after a lightning strike in real time, it is impossible to know whether the lightning protection device is effectively playing a protective role, and when the lightning protection device cannot effectively conduct lightning strikes, it is impossible to promptly and effectively change the existing structure of the lightning protection device to adapt to lightning strikes of different intensities, resulting in low safety of the lightning protection device.

[0006] Therefore, the present invention provides a lightning protection device for broadcast television signal transmission towers, comprising:

[0007] Lightning arrester;

[0008] The fixing part is used to maintain the overall stability of the lightning protection device;

[0009] A support portion, which is connected to the fixing portion, is used to vertically support the lightning arrester to the target height;

[0010] A detection component, connected to the lightning arrester, is used to acquire the current value flowing through the lightning arrester when the lightning arrester is in a tip discharge state.

[0011] An analysis component, connected to the detection component, is used to compare the current value with the corresponding current threshold, and determine whether to adjust the target height of the lightning arrester based on the comparison result;

[0012] The telescopic part is connected to the lightning arrester, the support part and the analysis component respectively, and is used to adjust the height of the lightning arrester to a safe height in response to the analysis component;

[0013] The safe height is the height of the lightning arrester when the current flowing through it is not greater than the current threshold.

[0014] The fixing part includes a flange and a rib plate, specifically:

[0015] The flange is threaded to the ground through preset holes to maintain the overall stability of the lightning protection device;

[0016] The flange has four ribs at its top that are welded to the support to maintain the overall stability of the lightning protection device.

[0017] Two of the ribs are arranged symmetrically in the transverse direction, while the remaining two ribs are arranged symmetrically in the longitudinal direction.

[0018] The support includes an upright and auxiliary support rods, specifically:

[0019] The upright is equipped with a suspended damper.

[0020] The auxiliary support rods are arranged on the outside of the upright in a conical shape and connected to the upright.

[0021] A crossbar and a crossbar are provided between two adjacent auxiliary support rods.

[0022] The specific configuration of the suspended damper inside the upright is as follows:

[0023] Two anchor points symmetrically arranged on the inner wall of the pole are used to pull two cables to connect the suspension damper.

[0024] The suspended damper is suspended inside the pole.

[0025] The maximum swing of the suspended damper is less than the minimum distance between the suspended damper and the inner wall of the pole.

[0026] The telescopic part is connected to the linear guide rail provided on the inner wall of the pole by gears. The telescopic part is raised and lowered by gear transmission to adjust the height of the lightning arrester.

[0027] The diameter of the telescopic part is smaller than the diameter of the upright.

[0028] The analysis component compares the current value with the corresponding current threshold to determine whether to adjust the target height of the lightning arrester. Specifically:

[0029] The analysis component compares the current value with the current threshold.

[0030] If the current value is not greater than the current threshold, the analysis component remains silent;

[0031] If the current value is greater than the current threshold, the analysis component sends a telescopic command to the telescopic part.

[0032] The telescopic part responds to the telescopic command specifically as follows:

[0033] When the current value is greater than the current threshold, the telescopic part moves on the linear guide rail through the gear to reduce the extension of the telescopic part, thereby lowering the target height until the current value is not greater than the current threshold. At this time, the height of the lightning arrester is the safe height.

[0034] The maximum elongation of the telescopic part is not greater than the length of the linear guide rail.

[0035] This invention provides a lightning protection device for broadcast television signal transmission towers. By integrating a high-precision detection component, it can detect the current flowing through the lightning protection device in real time after a lightning strike. By comparing the current value with a preset current threshold through an analysis component, it can intuitively determine whether the lightning protection device has effectively provided protection. The telescopic section can automatically adjust the height of the lightning arrester according to the instructions of the analysis component to adapt to lightning strikes of varying intensities. This adaptive adjustment mechanism improves the flexibility of the lightning protection device, ensuring effective protection under various lightning strike conditions, thereby significantly enhancing the safety of the lightning protection device.

[0036] Furthermore, the improved lightning protection device significantly enhances the overall structural stability and wind pressure resistance by optimizing the structure of the fixing and supporting parts, such as adding ribs, auxiliary support rods, and suspension dampers. This helps maintain the normal operation of the lightning protection device under extreme weather conditions, thereby further improving the safety of the lightning protection device.

[0037] Furthermore, automated and intelligent detection and adjustment mechanisms reduce the need for manual intervention and lower operation and maintenance costs. Simultaneously, real-time detection and data analysis enable faster problem identification and resolution, thereby further improving the safety of lightning protection devices.

[0038] Furthermore, by precisely adjusting the height of the lightning arrester, equipment damage caused by over-discharge is avoided, extending the service life of the lightning protection device. In addition, a well-designed structure helps reduce equipment aging caused by factors such as wind pressure and corrosion, thereby further improving the safety of the lightning protection device. Attached Figure Description

[0039] Figure 1 This is a structural block diagram of the lightning protection device for a broadcast television signal transmission tower in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of the lightning protection device for a broadcast television signal transmission tower in an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the internal structure of the support portion in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the outer structure of the support portion in an embodiment of the present invention;

[0043] Figure 5 This is a partially enlarged schematic diagram of the connection method between the telescopic part and the support part in an embodiment of the present invention;

[0044] The components include: 1. Lightning arrester; 2. Telescopic part; 3. Support part; 4. Fixing part; 5. Upright pole; 6. Anchor point; 7. Suspension damper; 8. Auxiliary support rod; 9. Horizontal bar; 10. Cross bar; 11. Gear; and 12. Linear guide rail. Detailed Implementation

[0045] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0048] To better understand this invention, the terms used in this invention are explained below:

[0049] Lightning arresters: Located at the top of a lightning protection system, lightning arresters refer to lightning rods, lightning protection strips (wires), lightning protection networks, and metal roofs and metal components used for lightning interception, which directly receive lightning strikes. They have a good electrical connection with down conductors and grounding devices. Their function is to use their protruding parts above the protected object to attract lightning to themselves, thus receiving direct lightning discharge. When lightning strikes the lightning arrester directly, the lightning current will quickly flow from the arrester itself through the down conductor and grounding device to the ground, thereby protecting the building and the electrical equipment within it.

[0050] Tip discharge: When a thundercloud approaches, objects on the ground are induced with opposite charges. Due to its small curvature and high charge density, the tip of the lightning rod increases the electric field strength to the point that the air breaks down, forming a conductive channel that allows the cloud charge to be released slowly, thus protecting buildings from lightning strikes.

[0051] Dampers: These typically consist of counterweights and slings, resembling a giant pendulum. When strong winds strike, the building sways, but the counterweights of the wind dampers remain relatively stationary due to inertia or move in the opposite direction of the building's sway, thus counteracting the wind force and reducing the building's sway amplitude.

[0052] Please see Figure 1 as well as Figure 2 As shown, the lightning protection device for broadcast television signal transmission towers provided by the present invention includes:

[0053] Lightning arrester 1;

[0054] Fixing part 4 is used to maintain the overall stability of the lightning protection device;

[0055] Support part 3, which is connected to fixing part 4, is used to vertically support the lightning arrester to the target height;

[0056] A detection component, which is connected to the lightning arrester 1, is used to acquire the current value flowing through the lightning arrester 1 when the lightning arrester 1 is in a tip discharge state.

[0057] The analysis component, which is connected to the detection component, is used to compare the current value with the corresponding current threshold and determine whether to adjust the target height of the lightning arrester based on the comparison result.

[0058] The telescopic part 2 is connected to the lightning arrester 1, the support part 3 and the analysis component respectively, and is used to adjust the height of the lightning arrester 1 to a safe height in response to the analysis component.

[0059] The safe height is the height of the lightning arrester 1 when the current flowing through it does not exceed the current threshold.

[0060] In one specific embodiment, the lightning arrester 1 is made of copper or stainless steel and has a pointed shape to maximize its conductivity and point discharge effect during thunderstorms. The top of the lightning arrester 1 is also coated with a conductive coating to enhance its ability to attract and conduct lightning.

[0061] Furthermore, the fixing part 4 is made of high-strength steel to ensure the stability of the lightning protection device under extreme weather conditions. It is also designed to be fixed with anchor bolts, making it easy to install on the roof of a building or on the ground.

[0062] Furthermore, the support part 3 is a steel column, which is connected to the fixing part 4 by welding or bolting. The column is equipped with a linear guide rail, which facilitates the vertical movement of the telescopic part and adjusts the height of the lightning arrester.

[0063] Furthermore, the detection component employs a high-precision current sensor, which is directly connected to the conductive part of the lightning arrester to detect the current value flowing through it in real time. The sensor transmits the data to the analysis component via wired or wireless means.

[0064] Furthermore, the analysis component is equipped with a microprocessor that receives current data from the detection component and compares it with a preset current threshold. Understandably, the current threshold is set based on factors such as building type, geographical location, and frequency of lightning activity. When the current value exceeds the threshold, the analysis component sends an adjustment command to the telescopic unit.

[0065] Furthermore, the telescopic unit 2 is composed of an electric or hydraulic drive system that automatically adjusts the height of the lightning arrester in response to commands from the analysis component. During the adjustment process, the telescopic unit 2 ensures that the lightning arrester moves smoothly, avoiding impact on the building.

[0066] In one specific embodiment, the aforementioned support rod is further provided with connection points or clamps for connecting grounding wires or leads. A grounding wire is a conductor connecting a lightning arrester (such as a lightning rod) to the earth. Its main function is to safely conduct lightning current into the earth, preventing damage to equipment and personnel from lightning strikes. One end of the grounding wire is typically connected to the grounding terminal of the lightning arrester (such as the bottom of the lightning rod). The other end is buried deep underground, forming a good electrical connection with the earth.

[0067] In the above steps, the high-precision sensor used in the detection component can be implemented using any existing technology, such as a Hall closed-loop current sensor, which will not be elaborated here.

[0068] In the above steps, this invention provides a lightning protection device for broadcast television signal transmission towers. By integrating a high-precision detection component, it can detect the current flowing through the lightning protection device in real time after a lightning strike. By comparing the current value with a preset current threshold through an analysis component, it can intuitively determine whether the lightning protection device has effectively provided protection. The telescopic part can automatically adjust the height of the lightning arrester according to the instructions of the analysis component to adapt to lightning strikes of different intensities. This adaptive adjustment mechanism of the invention improves the flexibility of the lightning protection device, ensuring that it provides effective protection under various lightning strike conditions, thereby effectively improving the safety of the lightning protection device.

[0069] Furthermore, the improved lightning protection device significantly enhances the overall structural stability and wind pressure resistance by optimizing the structure of the fixing and supporting parts, such as adding ribs, auxiliary support rods, and suspension dampers. This helps maintain the normal operation of the lightning protection device under extreme weather conditions, thereby further improving the safety of the lightning protection device.

[0070] Furthermore, automated and intelligent detection and adjustment mechanisms reduce the need for manual intervention and lower operation and maintenance costs. Simultaneously, real-time detection and data analysis enable faster problem identification and resolution, thereby further improving the safety of lightning protection devices.

[0071] Furthermore, by precisely adjusting the height of the lightning arrester, equipment damage caused by over-discharge is avoided, extending the service life of the lightning protection device. In addition, a well-designed structure helps reduce equipment aging caused by factors such as wind pressure and corrosion, thereby further improving the safety of the lightning protection device.

[0072] Please see Figure 3 As shown, the fixing part includes a flange and a rib, specifically:

[0073] The flange is connected to the ground via pre-drilled holes to maintain the overall stability of the lightning protection device;

[0074] Four ribs are welded to the support at the top of the flange to maintain the overall stability of the lightning protection device.

[0075] Two of the ribs are arranged symmetrically in the transverse direction, while the remaining two ribs are arranged symmetrically in the longitudinal direction.

[0076] In detail, the flanges and ribs are typically made of high-strength, corrosion-resistant materials, such as stainless steel or high-quality carbon steel, to ensure their long-term durability in harsh environments. Understandably, in practice, the flanges and ribs are first pre-drilled in the ground according to the design requirements of the lightning protection device, matching the flange positions. Then, the flange is accurately aligned with the holes and the bolts are tightened to secure it firmly to the ground. Next, the support and ribs are precisely butt-jointed and welded, ensuring the welding quality meets GB985-88 and GB986-88 standards, thus forming a robust and durable foundation structure for the lightning protection device.

[0077] The flange is fixed to the ground via pre-drilled holes using a threaded connection, ensuring the overall stability of the lightning protection device. This connection method is not only simple and reliable but also facilitates installation and maintenance. At the top of the flange, four ribs are meticulously designed: two horizontally symmetrical and two vertically symmetrical. These ribs are welded tightly to the support structure, further enhancing the structural stability and wind pressure resistance of the lightning protection device.

[0078] Please see Figure 3 and Figure 4 As shown, the support includes a vertical pole 5 and an auxiliary support pole 8, specifically:

[0079] The upright 5 is equipped with a suspended damper 7 inside.

[0080] The auxiliary support rods 8 are located on the outside of the upright 5, arranged in a positive cone shape and connected to the upright 5.

[0081] A crossbar 9 and a crossbar 10 are provided between two adjacent auxiliary support rods 8.

[0082] The specific installation method of the suspension damper 7 inside the pole 5 is as follows:

[0083] Two anchor points 6 are symmetrically arranged on the inner wall of the upright 5 to pull two cables to connect the suspension damper 7.

[0084] The suspended damper 7 is suspended inside the upright 5;

[0085] Among them, the maximum swing of the suspended damper 7 is less than the minimum distance between the suspended damper 7 and the inner wall 5 of the upright.

[0086] In one specific embodiment, the support mainly consists of a vertical pole 5 and auxiliary support rods 8. The vertical pole 5 is made of high-strength steel to ensure sufficient load-bearing capacity and stability. Inside the vertical pole 5, a suspended damper 7 is installed. This suspended damper 7 is made of high-quality alloy material, weighing approximately 150 tons, ensuring both damping effect and durability and reliability under long-term use. The suspended damper 7 is suspended and fixed by two high-strength cables pulled through two symmetrically arranged high-strength anchor points 6 on the inner wall of the vertical pole 5. These two cables are also made of high-strength alloy material, such as galvanized steel cable, to ensure they can withstand the enormous tensile force generated by the suspended damper 7 during swinging.

[0087] It should be clarified that the weight of the suspended damper 7 is not fixed, but is determined based on the specific structure and dimensions of the lightning arrester, the wind load conditions of the environment, and the design objectives (such as reducing vibration and improving stability). For example, for a lightning arrester with a total mass of approximately 1000 tons and a height of 30 meters, the corresponding suspended damper 7 would have a mass of 150 tons.

[0088] Please see Figure 5 As shown, the telescopic part is connected to the linear guide rail 12 provided on the inner wall of the pole through a gear 11. The telescopic part is driven by the gear 12 to raise and lower the telescopic part in order to adjust the height of the lightning arrester.

[0089] The diameter of the telescopic section is smaller than the diameter of the upright.

[0090] The analysis component compares the current value with the corresponding current threshold to determine whether the target height of the lightning arrester should be adjusted. Specifically:

[0091] Analyze the component comparison current values ​​and current thresholds;

[0092] If the current value is not greater than the current threshold, the analysis component remains silent;

[0093] If the current value is greater than the current threshold, the analysis component sends a telescopic command to the telescopic part.

[0094] In practice, according to the relevant records in the existing technologies GB 50057-2010 "Code for Design of Lightning Protection of Buildings" and GB / T21431-2023 "Technical Specification for Testing Lightning Protection Devices of Buildings", the current flowing through a lightning arrester during normal operation is usually small, typically between 0 and 100 mA. Therefore, the corresponding current threshold is set at 120 mA.

[0095] Understandably, due to the wide variety of types and specifications of lightning protection devices, the current threshold they can carry will vary depending on the specific circumstances. Therefore, in practical applications, it is necessary to determine the appropriate current threshold based on the specifications and performance of the lightning protection device, as well as the characteristics of the protected equipment.

[0096] The telescopic unit responds to telescopic commands as follows:

[0097] When the current value is greater than the current threshold, the telescopic part moves on the linear guide rail through gears to reduce the extension of the telescopic part, thereby lowering the target height until the current value is no greater than the current threshold. At this time, the height of the lightning arrester is the safe height.

[0098] The maximum elongation of the telescopic section shall not exceed the length of the linear guide rail.

[0099] For example, the length of the linear guide rail is 5m, the extension of the telescopic part is 0-5m, and the maximum extension is 5m; the length of the linear guide rail is 8m, the extension of the telescopic part is 0-6m, and the maximum extension is 6m.

[0100] It is understandable that when the telescopic part is extended via gear transmission, the increase in length relative to its unextended state is the elongation. The change in the height of the lightning arrester is the same as the change in the elongation of the telescopic part, specifically: when the telescopic part is extended via gear transmission, the height of the lightning arrester increases; when the telescopic part is compressed via gear transmission, the height of the lightning arrester decreases.

[0101] In a practical application scenario, the target height of the lightning arrester is 35m, with the telescopic part extending 5m. When the lightning arrester is at a height of 35m, the current flowing through its tip during discharge is 120mA, which is greater than its corresponding current threshold of 100mA. Therefore, it is necessary to adjust the target height of the lightning arrester, i.e., adjust the extension of the telescopic part. When the extension of the telescopic part is reduced to 1m, the current flowing through the lightning arrester is 90mA, which is less than the current threshold of 100mA. At this time, the height of the lightning arrester is 31m, which is the safe height of the lightning arrester.

[0102] Furthermore, in practice, the multi-stage surge protector can be used in conjunction with a lightning arrester to enhance the overall lightning protection effect. According to experimental data, the multi-stage surge protector performs well within a voltage range of 300V to 3500V, effectively reducing residual voltage. This highly overlaps with the applicable voltage range of the lightning arrester of this invention. Within this voltage range, as the impulse voltage increases, the residual voltage and current values ​​after the multi-stage surge protector and grounding device continuously increase, but the increase in residual voltage is relatively small, exhibiting a linear growth.

[0103] Lightning protection devices, such as lightning rods or lightning strips, are typically installed at the top of buildings or in areas susceptible to lightning strikes to guide lightning current safely into the ground. Multistage surge protectors, on the other hand, are installed at the entry points of power or signal lines, serving as a second line of defense after lightning current enters the building. When lightning strikes a building or nearby area, the lightning protection device first guides the lightning current into the ground, while the multistage surge protector further limits the lightning overvoltage entering the building, ensuring the safe operation of power and signal systems. In lightning protection measures for shared equipment in signal transmission towers, multistage surge protectors and lightning protection devices are closely integrated, forming a highly efficient protection system. Multistage surge protectors, through the series connection of different levels of nonlinear suppression elements, achieve tiered limitation of transient overvoltages on power lines and signal transmission lines, while the lightning protection device is responsible for diverting lightning into the ground, preventing direct damage to equipment. In practical applications, multi-stage surge protectors are usually used in conjunction with lightning arresters. Through the guidance of the lightning arrester, the lightning energy is safely diverted to the ground, while the multi-stage surge protector further absorbs and suppresses overvoltage, ensuring the safe and stable operation of the shared equipment in the transmission tower.

[0104] The components described in the embodiments of this application can be implemented in hardware or software. The described components can also be installed in a system; for example, it can be described as follows: a lightning protection system for a broadcast television signal transmission tower includes a fixing unit, a support unit, a detection unit, and an analysis unit, wherein the names of these units do not necessarily constitute a limitation on the component itself.

[0105] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation that may be implemented in systems and methods according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using dedicated hardware-based means to perform the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0106] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A lightning protection device for a broadcast television signal tower, comprising: include: Lightning arrester; The fixing part is used to maintain the overall stability of the lightning protection device; A support portion, which is connected to the fixing portion, is used to vertically support the lightning arrester to the target height; A detection component, connected to the lightning arrester, is used to acquire the current value flowing through the lightning arrester when the lightning arrester is in a tip discharge state. An analysis component, connected to the detection component, is used to compare the current value with the corresponding current threshold, and determine whether to adjust the target height of the lightning arrester based on the comparison result; If the current value is not greater than the current threshold, the analysis component remains silent; If the current value is greater than the current threshold, the analysis component sends a telescopic command to the telescopic part; The telescopic part is connected to the lightning arrester, the support part and the analysis component respectively, and is used to adjust the height of the lightning arrester to a safe height in response to the analysis component; When the current value is greater than the current threshold, the telescopic part lowers the height of the lightning arrester until the current value is no greater than the current threshold. At this time, the height of the lightning arrester is the safe height.

2. The broadcast television signal tower lightning protection system of claim 1, wherein, The fixing part includes a flange and a rib plate, specifically: The flange is threaded to the ground through preset holes to maintain the overall stability of the lightning protection device; The flange has four ribs at its top that are welded to the support to maintain the overall stability of the lightning protection device. Two of the ribs are arranged symmetrically in the transverse direction, while the remaining two ribs are arranged symmetrically in the longitudinal direction.

3. The lightning protection device for broadcast television signal transmission towers according to claim 2, characterized in that, The support includes an upright and auxiliary support rods, specifically: The upright is equipped with a suspended damper. The auxiliary support rods are arranged on the outside of the upright in a conical shape and connected to the upright.

4. The lightning protection device for broadcast television signal transmission towers according to claim 3, characterized in that, A crossbar and a crossbar are provided between two adjacent auxiliary support rods.

5. The lightning protection device for broadcast television signal transmission towers according to claim 4, characterized in that, The specific configuration of the suspended damper inside the upright is as follows: Two anchor points symmetrically arranged on the inner wall of the pole are used to pull two cables to connect the suspension damper.

6. The lightning protection device for a broadcast television signal transmission tower according to claim 5, characterized in that, The suspended damper is suspended inside the pole. The maximum swing of the suspended damper is less than the minimum distance between the suspended damper and the inner wall of the pole.

7. The lightning protection device for broadcast television signal transmission towers according to claim 6, characterized in that, The telescopic part is connected to the linear guide rail provided on the inner wall of the pole by gears. The telescopic part is raised and lowered by gear transmission to adjust the height of the lightning arrester. The diameter of the telescopic part is smaller than the diameter of the upright.

8. The lightning protection device for a broadcast television signal transmission tower according to claim 7, characterized in that, The maximum elongation of the telescopic part shall not exceed the length of the linear guide rail.

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