Lightning protection mechanism of power distribution cabinet for power transmission

Abstract

The utility model discloses a lightning protection mechanism of a power distribution cabinet for power transmission, and belongs to the technical field of power transmission equipment. The device mainly comprises a synchronous driving unit, the synchronous driving unit is installed at the top of the power distribution cabinet and drives a retracting and releasing unit to rotate at the top of the power distribution cabinet, the retracting and releasing unit comprises a worm, a worm gear and a rotating rod, the worm is in meshed connection with the side wall of the worm gear, and the rotating rod is in key connection with the interior of the worm gear. One end of each rotating rod is rotationally connected to the inner side wall of the power distribution cabinet through a bearing seat, the other end of each rotating rod is fixedly provided with a lightning protection unit, and the synchronous driving unit is matched with the retracting and releasing unit, so that flexible retracting and releasing of the lightning protection units are achieved. In no thunder and lightning weather, the lightning protection unit can be recycled into the power distribution cabinet, external environment erosion is reduced, and the service life of the lightning rod, the insulating base and other components is prolonged.

Description

Technical Field

[0001] This application relates to the field of power transmission equipment technology, specifically to a lightning protection mechanism for a power transmission distribution cabinet. Background Technology

[0002] Existing lightning protection mechanisms for distribution cabinets are mainly used to safely divert the current generated by lightning to the ground during thunderstorms, preventing damage to the distribution cabinet from lightning strikes, ensuring the normal operation of power transmission, and protecting the safety of personnel and equipment.

[0003] However, in traditional distribution cabinet surge protection systems, surge protectors are often fixedly installed on top of the cabinet, exposed to the external environment for extended periods. This makes them susceptible to erosion from wind, sun, and rain, leading to aging, damage, and reduced surge protection effectiveness. Furthermore, fixed surge protectors occupy space when not in use, impacting the layout and usability of the surrounding environment.

[0004] Furthermore, during the transmission of lightning current, traditional lightning protection mechanisms may not be able to effectively prevent current leakage. Once current leakage occurs, it will not only damage the electrical components in the distribution cabinet, but may also endanger the lives of the operators. In addition, the grounding wires and embedded plates are in a humid underground environment for a long time, which makes them prone to rust and corrosion, resulting in increased grounding resistance, reduced effectiveness of the lightning protection system, and inability to quickly and safely introduce lightning current into the ground.

[0005] Therefore, it is necessary to provide a lightning protection mechanism for power distribution cabinets to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0007] The purpose of this utility model is to provide a lightning protection mechanism for power distribution cabinets used in power transmission, so as to solve the problems mentioned in the background art.

[0008] The technical solution adopted by this application to solve its technical problem is:

[0009] A lightning protection mechanism for a power transmission distribution cabinet includes a synchronous drive unit installed on the top of the distribution cabinet. The synchronous drive unit drives a take-up and release unit to rotate on the top of the distribution cabinet. The take-up and release unit includes a worm, a worm wheel, and a rotating rod. The worm is meshed with the side wall of the worm wheel, and the rotating rod is connected to the inside of the worm wheel by a key. One end of the rotating rod is rotatably connected to the inner side wall of the distribution cabinet through a bearing seat, and the other end of the rotating rod is fixedly installed with a lightning protection unit.

[0010] The lightning protection unit and the retraction unit are each provided in four sets, and the four sets of lightning protection units and retraction units are located at the four corners of the top of the distribution cabinet.

[0011] When the retraction unit drives the lightning protection unit to rotate to a vertical angle, the bottom end of the lightning protection unit abuts against the conductive end of the lightning attracting unit, and the lightning attracting unit is fixedly connected to the grounding wire.

[0012] Preferably, the synchronous drive unit includes a drive motor, a drive wheel, a synchronous belt, and four synchronous pulleys. A partition is fixedly installed on the top of the distribution cabinet. The drive motor is mounted on the bottom surface of the partition. The interior of the drive wheel is keyed to the output shaft of the drive motor. The drive wheel is meshed with one side of the synchronous belt. The sidewalls of the four synchronous pulleys are all meshed with the synchronous belt. The sidewalls of the worm gear are keyed to the interior of the synchronous pulleys. The bottom end of the worm gear is rotatably mounted on the partition via a bearing seat.

[0013] Preferably, guide wheels are rotatably installed on the periphery of the synchronous belt on both sides of the four synchronous pulleys. The guide wheels squeeze the synchronous belt so that the synchronous belt is partially wrapped around the side wall of the synchronous pulley. Guide wheels are rotatably installed on both sides of the synchronous belt on the side of the drive wheel.

[0014] Preferably, the lightning protection unit includes an insulating base, a mounting cylinder, and a lightning rod. The end of the rotating rod is installed perpendicularly to the insulating base. The mounting cylinder is sleeved on the insulating base. A plurality of first ceramic plates are fixedly installed on the side wall of the mounting cylinder. The lightning rod is disposed inside the mounting cylinder.

[0015] Preferably, the lightning attracting unit includes a mounting frame, a conductive sheet, and a conductive rod. The mounting frame is fixedly mounted on the top surface of the partition. Conductive sheets are fixedly mounted on the top surfaces of both ends of the mounting frame. The conductive sheets are the conductive ends of the lightning attracting unit. The conductive sheets have a semi-circular arc structure. One end of the conductive rod is fixedly connected to the bottom end of the conductive sheet, and the other end of the conductive rod passes through the mounting frame and is fixedly connected to the grounding wire.

[0016] Preferably, a second ceramic plate is sleeved on the side wall of each conductive rod located above and below the mounting bracket, the grounding wire passes through the inside of the distribution cabinet, and a third ceramic plate is installed at the connection between the grounding wire and the side wall of the distribution cabinet.

[0017] Preferably, the bottom end of the grounding wire is fixedly connected to an embedded plate, and both the grounding wire and the embedded plate are coated with an anti-rust coating.

[0018] The beneficial effects of this application are:

[0019] 1. This technical solution achieves flexible deployment and retraction of the lightning protection unit through the cooperation of a synchronous drive unit and a retraction unit. In the absence of thunderstorms, the lightning protection unit can be retracted into the distribution cabinet, reducing external environmental corrosion and extending the service life of components such as lightning rods and insulating bases. When lightning protection is required, it can be quickly rotated out to a vertical position to function. Furthermore, the retracted lightning protection unit does not occupy additional space around the distribution cabinet, optimizing the spatial layout and facilitating the installation of surrounding equipment and personnel operation.

[0020] 2. This technical solution sets up a first ceramic plate in the lightning protection unit, a second ceramic plate at the conductive rod of the lightning attracting unit, and a third ceramic plate at the connection between the grounding conductor and the distribution cabinet. Through multi-layer insulation design, it effectively prevents lightning current leakage and protects the electrical components and operators in the distribution cabinet. In addition, the grounding conductor and the embedded plate are coated with polyurethane anti-rust paint, which can resist the corrosion of the underground humid environment and avoid the increase in grounding resistance due to rust. This ensures that the lightning current can be stably and efficiently introduced into the ground through the grounding conductor and the embedded plate, thereby improving the overall effectiveness of the lightning protection system.

[0021] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0023] Figure 1 This is an overall schematic diagram of a lightning protection mechanism for a power transmission distribution cabinet according to the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the lightning protection mechanism of this utility model;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the synchronous drive unit, the take-up and extend unit, the lightning protection unit, and the limiting unit of this utility model;

[0026] Figure 4 This is a schematic diagram of the assembly structure of the grounding conductor, lightning attractor unit, and lightning protection unit of this utility model;

[0027] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0028] The following are the labeling elements in the figure:

[0029] 1. Distribution cabinet; 11. Missing slot; 12. Partition;

[0030] 2. Lightning protection system;

[0031] 21. Synchronous drive unit; 211. Drive motor; 212. Drive wheel; 213. Synchronous belt; 214. Synchronous pulley; 215. Guide wheel;

[0032] 22. Retracting / unwinding unit; 221. Worm gear; 222. Worm wheel; 223. Rotating rod;

[0033] 23. Lightning protection unit; 231. Insulating base; 232. Mounting cylinder; 233. First ceramic plate; 234. Lightning rod;

[0034] 24. Lightning triggering unit; 241. Mounting bracket; 242. Conductive sheet; 243. Conductive rod; 244. Second ceramic sheet; 245. Third ceramic sheet;

[0035] 25. Grounding conductor;

[0036] 26. Embedded plates;

[0037] 3. Limiting unit; 31. Baffle; 32. Rotating plate. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0040] Please see Figure 1-5 The embodiments provided by this utility model are as follows:

[0041] like Figure 1 , Figure 2 and Figure 3As shown, a lightning protection mechanism for a power distribution cabinet includes a synchronous drive unit 21, which is installed on the top of the distribution cabinet 1. The synchronous drive unit 21 drives the take-up and release unit 22 to rotate on the top of the distribution cabinet 1. Specifically, the synchronous drive unit 21 includes a drive motor 211, a drive wheel 212, a synchronous belt 213, and four synchronous pulleys 214. A partition 12 is fixedly installed on the top of the distribution cabinet 1. The drive motor 211 is installed on the bottom surface of the partition 12. The inside of the drive wheel 212 is keyed to the output shaft of the drive motor 211. The drive wheel 212 is meshed with one side of the synchronous belt 213. The side walls of the four synchronous pulleys 214 are all meshed with the synchronous belt 213. The side walls of the worm gear 221 are keyed to the inside of the synchronous pulleys 214. The bottom end of the worm gear 221 is rotatably installed on the partition 12 through a bearing seat.

[0042] Furthermore, such as Figure 3 As shown, guide wheels 215 are rotatably mounted on the periphery of the synchronous belt 213 located on both sides of the four synchronous pulleys 214. The guide wheels 215 squeeze the synchronous belt 213 so that the synchronous belt 213 is partially wrapped around the side wall of the synchronous pulley 214. Guide wheels 215 are rotatably mounted on both sides of the synchronous belt 213 located on one side of the drive wheel 212. By rotatably mounting guide wheels 215 on the periphery of the synchronous belt 213 located on both sides of the four synchronous pulleys 214 and on one side of the drive wheel 212, the guide wheels 215 squeeze the synchronous belt 213 so that the synchronous belt 213 is partially wrapped around the side wall of the synchronous pulley 214. This increases the friction between the synchronous belt 213 and the synchronous pulley 214, preventing the synchronous belt 213 from slipping during transmission. This ensures the stability and accuracy of power transmission in the synchronous drive unit 21, and ensures that the power of the drive motor 211 can be reliably transmitted to each synchronous pulley 214.

[0043] After the drive motor 211 starts, its output shaft drives the drive wheel 212, which is keyed to it, to rotate. The drive wheel 212 transmits power to the synchronous belt 213 through meshing with the synchronous belt 213. The synchronous belt 213 then drives the four synchronous pulleys 214 meshing with it to rotate synchronously, so that the four synchronous pulleys 214 on the partition 12 can rotate synchronously to synchronously handle the subsequent lightning protection unit 23. The top surface of the distribution cabinet 1 is provided with a notch 11 for the lightning protection unit 23 to rotate out, and the partition 12 of the distribution cabinet is provided with a guide groove and a guide hole to prevent rainwater from entering the electrical component installation area below the partition 12, or to prevent rainwater from being collected. The specific design of the guide groove and guide hole is prior art known to those skilled in the art and is not the main technical problem to be solved in this application, so it will not be described in detail here.

[0044] like Figure 3As shown, the take-up and release unit 22 includes a worm 221, a worm wheel 222 and a rotating rod 223. The worm 221 is meshed with the side wall of the worm wheel 222, and the rotating rod 223 is connected to the inside of the worm wheel 222 by a key. One end of the rotating rod 223 is rotatably connected to the inner side wall of the distribution cabinet 1 through a bearing seat, and the other end of the rotating rod 223 is fixedly installed with a lightning protection unit 23.

[0045] There are four sets of lightning protection unit 23 and retraction unit 22. The four sets of lightning protection unit 23 and retraction unit 22 are located at the four corners of the top of the distribution cabinet 1. When the retraction unit 22 drives the lightning protection unit 23 to rotate to a vertical angle, the bottom end of the lightning protection unit 23 abuts against the conductive end of the lightning attracting unit 24, and the lightning attracting unit 24 is fixedly connected to the grounding wire 25.

[0046] Specifically, such as Figure 3 As shown, the lightning protection unit 23 includes an insulating base 231, a mounting cylinder 232, and a lightning rod 234. The end of the rotating rod 223 is installed perpendicularly to the insulating base 231. The mounting cylinder 232 is sleeved on the insulating base 231. Multiple first ceramic plates 233 are fixedly installed on the side wall of the mounting cylinder 232. The lightning rod 234 is disposed inside the mounting cylinder 232.

[0047] Limiting units 3 are fixedly installed on the side wall of the rotating rod 223 and the top surface of the partition 12, respectively. The limiting unit 3 includes a baffle 31 and a rotating plate 32. The baffle 31 is vertically installed on the top surface of the partition 12, and the rotating plate 32 is vertically installed on the side wall of the rotating rod 223. When the rotating rod 223 rotates and drives the lightning protection unit 23 to be retracted into the distribution cabinet 1, the end of the rotating plate 32 will abut against the side wall of the baffle 31. The side wall of the baffle 31 is equipped with a limiter, which can send a trigger signal to stop the drive motor 211 from working, thus preventing the lightning protection unit 23 from rotating excessively.

[0048] When the synchronous drive unit 21 drives the worm 221 to rotate, the worm 221 meshes with the worm wheel 222, converting the rotational motion of the worm 221 into the rotation of the worm wheel 222. Since the rotating rod 223 is keyed to the inside of the worm wheel 222, the rotation of the worm wheel 222 drives the rotating rod 223 to rotate, which in turn causes the lightning protection unit 23, fixed to the other end of the rotating rod 223, to rotate as well. When the lightning protection unit 23 rotates to a vertical angle, its bottom end contacts the conductive end of the lightning attracting unit 24, forming a conductive path. The function of the retraction unit 22 is to realize the retraction and extension function of the lightning protection unit 23. When lightning protection is needed, the lightning protection unit 23 is rotated to a vertical position, connecting it to the lightning attracting unit 24 to perform its lightning protection function; when lightning protection is not needed, the lightning protection unit 23 can be retracted, reducing space occupation and protecting the lightning protection unit 23 from external environmental influences.

[0049] When lightning strikes, the lightning rod 234 attracts the lightning and draws the lightning current into itself. The insulating base 231 and the mounting cylinder 232 support and protect the lightning rod 234, while the first ceramic plate 233 on the side wall of the mounting cylinder 232 has insulating properties to prevent current leakage to other components.

[0050] like Figure 4 As shown, the lightning attracting unit 24 includes a mounting frame 241, a conductive sheet 242, and a conductive rod 243. The mounting frame 241 is fixedly mounted on the top surface of the partition 12. Conductive sheets 242 are fixedly mounted on the top surfaces of both ends of the mounting frame 241. The conductive sheets 242 are the conductive ends of the lightning attracting unit 244. The conductive sheets 242 have a semi-circular arc structure. One end of the conductive rod 243 is fixedly connected to the bottom end of the conductive sheet 242. The other end of the conductive rod 243 passes through the mounting frame 241 and is fixedly connected to the grounding wire 25. The side walls of the conductive rod 243 located above and below the mounting frame 241 are fitted with second ceramic plates 244. The grounding wire 25 passes through the inside of the distribution cabinet 1, and a third ceramic plate 245 is installed at the connection between the grounding wire 25 and the side wall of the distribution cabinet 1.

[0051] When the lightning protection unit 23 is rotated to the vertical position, its bottom end contacts the conductive plate 242 of the lightning attracting unit 24. The lightning current is introduced into the ground through the lightning rod 234, the conductive plate 242, the conductive rod 243 and the grounding wire 25. The mounting bracket 241 serves to support the conductive plate 242 and the conductive rod 243. The second ceramic plate 244 and the third ceramic plate 245 have insulating properties, which can prevent the current from leaking to other parts of the distribution cabinet 1 and protect the distribution cabinet 1 from lightning damage.

[0052] like Figure 2 As shown, a pre-embedded plate 26 is fixedly connected to the bottom end of the grounding wire 25. The surfaces of the grounding wire 25 and the pre-embedded plate 26 are coated with an anti-rust coating. The grounding wire 25 transmits the lightning current introduced by the lightning attracting unit 24 to the pre-embedded plate 26, and the pre-embedded plate 26 disperses the current into the ground. The anti-rust coating can be polyurethane anti-rust paint. The anti-rust coating can prevent the grounding wire 25 and the pre-embedded plate 26 from rusting and extend their service life.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lightning protection mechanism (2) for a power transmission distribution cabinet (1), characterized in that: The system includes a synchronous drive unit (21), which is installed on the top of the distribution cabinet (1). The synchronous drive unit (21) drives the take-up and release unit (22) to rotate on the top of the distribution cabinet (1). The take-up and release unit (22) includes a worm (221), a worm wheel (222), and a rotating rod (223). The worm (221) is meshed with the side wall of the worm wheel (222), and the rotating rod (223) is connected to the inside of the worm wheel (222). One end of the rotating rod (223) is rotatably connected to the inner side wall of the distribution cabinet (1) through a bearing seat. The other end of the rotating rod (223) is fixedly installed with a lightning protection unit (23). Among them, the lightning protection unit (23) and the retraction unit (22) are each provided in four sets, and the four sets of lightning protection unit (23) and retraction unit (22) are respectively located at the four corners of the top of the power distribution cabinet (1); When the retracting unit (22) drives the lightning protection unit (23) to rotate to a vertical angle, the bottom end of the lightning protection unit (23) abuts against the conductive end of the lightning attracting unit (24), and the lightning attracting unit (24) is fixedly connected to the grounding wire (25).

2. The lightning protection mechanism (2) of a power transmission distribution cabinet (1) according to claim 1, characterized in that: The synchronous drive unit (21) includes a drive motor (211), a drive wheel (212), a synchronous belt (213), and four synchronous pulleys (214). A partition (12) is fixedly installed on the top of the power distribution cabinet (1). The drive motor (211) is installed on the bottom surface of the partition (12). The inside of the drive wheel (212) is keyed to the output shaft of the drive motor (211). The drive wheel (212) is meshed with one side of the synchronous belt (213). The side walls of the four synchronous pulleys (214) are all meshed with the synchronous belt (213). The side walls of the worm (221) are keyed to the inside of the synchronous pulleys (214). The bottom end of the worm (221) is rotatably mounted on the partition (12) through a bearing seat.

3. The lightning protection mechanism (2) of a power transmission distribution cabinet (1) according to claim 2, characterized in that: Guide wheels (215) are rotatably installed on the periphery of the synchronous belt (213) located on both sides of the four synchronous pulleys (214). The guide wheels (215) squeeze the synchronous belt (213) so that the synchronous belt (213) is partially wrapped on the side wall of the synchronous pulley (214). Guide wheels (215) are rotatably installed on both sides of the synchronous belt (213) located on the side of the drive wheel (212).

4. The lightning protection mechanism (2) of a power transmission distribution cabinet (1) according to claim 1, characterized in that: The lightning protection unit (23) includes an insulating base (231), an mounting cylinder (232), and a lightning rod (234). The end of the rotating rod (223) is installed perpendicularly to the insulating base (231). The mounting cylinder (232) is sleeved on the insulating base (231). A plurality of first ceramic plates (233) are fixedly installed on the side wall of the mounting cylinder (232). The lightning rod (234) is located inside the mounting cylinder (232).

5. The lightning protection mechanism (2) of a power transmission distribution cabinet (1) according to claim 4, characterized in that: The lightning-attracting unit (24) includes a mounting frame (241), a conductive sheet (242), and a conductive rod (243). The mounting frame (241) is fixedly mounted on the top surface of the partition (12). The top surfaces of both ends of the mounting frame (241) are respectively fixedly mounted with conductive sheets (242). The conductive sheets (242) are the conductive ends of the lightning-attracting unit (24). The conductive sheets (242) have a semi-circular arc structure. One end of the conductive rod (243) is fixedly connected to the bottom end of the conductive sheet (242). The other end of the conductive rod (243) passes through the mounting frame (241) and is fixedly connected to the grounding wire (25).

6. The lightning protection mechanism (2) of a power transmission distribution cabinet (1) according to claim 5, characterized in that: The conductive rods (243) located above and below the mounting bracket (241) are fitted with second ceramic plates (244) on their side walls. The grounding wire (25) passes through the inside of the distribution cabinet (1), and a third ceramic plate (245) is installed at the connection between the grounding wire (25) and the side wall of the distribution cabinet (1).

7. The lightning protection mechanism (2) of a power transmission distribution cabinet (1) according to claim 6, characterized in that: The bottom end of the grounding wire (25) is fixedly connected to an embedded plate (26), and the surfaces of the grounding wire (25) and the embedded plate (26) are coated with an anti-rust coating.

Images