A lightning current diversion device

Abstract

The utility model discloses a lightning current shunt device. The utility model discloses a shunt wire, the utility model discloses a guide structure, the guide structure includes the winding seat of bearing the shunt wire, the winding seat rotates along the axis, the baffle, the baffle is located the both sides of winding seat, the baffle with the axis of winding seat is perpendicular, the part of baffle at least with shunt wire contact includes insulating layer. The utility model has can eliminate the hidden danger of striking, improves the security advantage.

Description

Technical Field

[0001] This utility model belongs to the technical field of lightning protection equipment. Specifically, it relates to a lightning current diversion device, which is particularly suitable for lightning protection in flammable and explosive locations. Background Technology

[0002] In flammable and explosive locations, stringent explosion-proof requirements apply. This is because sparks in these locations can easily ignite explosions, fires, and other safety accidents, causing significant casualties and property damage. For example, in petrochemical storage tank areas, large quantities of flammable and explosive oils are stored. Sparks generated can directly or indirectly ignite the oil-gas mixture inside the tanks, leading to catastrophic consequences.

[0003] Based on the above-mentioned potential hazards, lightning current diversion devices will be installed in the aforementioned flammable and explosive locations to divert current to the ground, thereby preventing equipment from generating sparks and preventing the ignition of oil and gas by electrical sparks, thus avoiding fire accidents.

[0004] In existing lightning current shunting devices, taking the lightning protection of floating roof oil tanks in the petrochemical industry as an example, the lightning current shunting device has a shunting conductor and a current-conducting structure connected to the current in the shunting conductor. One end of the shunting conductor is connected to the floating roof of the oil tank, and the other end is connected to the current-conducting structure, which is connected to the tank wall. Thus, when a lightning current occurs or when the charge on the floating roof is released, the current can be diverted through the shunting conductor and the current-conducting structure to the tank wall connected to the ground, thereby achieving lightning protection for the floating roof oil tank by introducing the current to the ground using the lightning current shunting device.

[0005] However, the existing lightning current shunt devices have the following defects in use. Specifically, in order for the shunt conductor to float up and down with the floating roof of the oil tank, and for the shunt conductor to be able to retract under the action of spring force after release, wire hopper baffles are designed on both sides of the wire hopper to ensure that the retracted shunt conductor can be wound around the wire hopper. The wire hopper baffles restrict and block the shunt conductor, so that it can be wound around the wire hopper when retracted. Furthermore, the current guiding principle of existing lightning current shunt devices utilizes the excellent conductivity of metals. Guided by this principle, both the current guiding structure and the cable tray baffles are made of metal. This causes a problem: during the release and retraction of the shunt conductor, it is inevitable that it will come into contact with the cable tray baffles on both sides. This contact can lead to frictional discharge and the potential for electric sparks, especially under high-frequency, high-intensity lightning current conditions. The shunt conductor wound around the cable tray can discharge to the inner wall of the cable tray baffle, generating electric sparks. On the other hand, the contact can cause the current that should be guided to the current guiding structure by the shunt conductor to be diverted to the cable tray baffle it is in contact with, preventing the current from being fully guided to the ground according to the designed current guiding path, and also posing a risk of discharge and electric sparks.

[0006] In view of this, this utility model is proposed. Utility Model Content

[0007] In order to solve at least some of the above-mentioned problems, this utility model provides a lightning current shunt device. The basic concept of the technical solution adopted by this utility model is: a lightning current shunting device, comprising: a shunting conductor; a current guiding structure, the current guiding structure including a winding seat that carries the shunting conductor, the winding seat rotating along an axis; and baffles, the baffles being disposed on both sides of the winding seat, the baffles being perpendicular to the axis of the winding seat, and the portion of the baffles in contact with the shunting conductor including an insulating layer.

[0008] Furthermore, the baffle includes a substrate connected to the winding seat and a blocking plate connected to the substrate, the blocking plate at least covering the side of the substrate facing the shunt wire, and the portion of the blocking plate in contact with the shunt wire includes an insulating layer.

[0009] Furthermore, the side of the baffle plate near the shunt wire includes an insulating layer; or, the side of the baffle plate near the shunt wire and the end face of the baffle plate both include an insulating layer.

[0010] Furthermore, the substrate and the winding seat are an integral structure, and the blocking plate covers the side of the substrate facing the shunt wire and the end face of the substrate.

[0011] Furthermore, the blocking plate has a receiving groove on the side facing the substrate, and the substrate is placed in the receiving groove.

[0012] Furthermore, a mounting bracket is provided between the blocking plates on both sides of the winding seat, the mounting bracket is supported by the winding seat, and at least one of the base plates on one side of the winding seat is connected and fixed to the blocking plate by fasteners.

[0013] Furthermore, the base plates on both sides of the winding seat are connected and fixed to the blocking plate by fasteners, and the connection position of the fasteners is close to or far away from the winding seat along the radial direction of the base plates.

[0014] Furthermore, the insulating material of the insulating layer is at least one of nylon, polytetrafluoroethylene, bakelite, epoxy resin, silicone rubber, and insulating ceramics.

[0015] Furthermore, the thickness of the insulating material is positively correlated with the current value of the shunt conductor.

[0016] Furthermore, it also includes: a housing, wherein the housing is provided with an elastic element that provides the retraction force of the shunt wire, and a support shaft that carries the elastic element, wherein a guide ring is installed on the portion of the support shaft that extends into the winding seat, and the guide ring contacts the winding seat.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0018] This invention relates to a lightning current shunt device. Baffles are designed on both sides of the winding base, and an insulating layer is incorporated into the portion of the baffles that contacts the shunt conductor. This creates contact friction between the metal and the insulating material during contact, preventing the risk of sparks caused by metal-to-metal friction. Simultaneously, the winding base in the current-guiding structure supports the shunt conductor, guiding the current transmitted by the conductor out through the winding base, thus meeting the requirements for current diversion. This lightning current shunt device, while ensuring the safe extraction of lightning current and bound charges, also prevents sparks caused by frictional discharge between the shunt conductor and the baffles, ensuring safe operation.

[0019] Furthermore, the baffle of this utility model adopts a structure of a base plate and a blocking plate. The base plate is connected to the winding seat to provide a mounting base for the baffle. The blocking plate covers the side of the base plate facing the shunt wire, and an insulating layer is designed in the part of the blocking plate that contacts the shunt wire. That is, the shunt wire contacts the blocking plate during use. Thus, the baffle formed by the combination of the base plate and the blocking plate is convenient for processing and production.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of an embodiment of the present utility model; Figure 2 yes Figure 1 A schematic diagram of the AA cross-section; Figure 3 This is an installation diagram of this utility model.

[0022] In the diagram: 1. Diverter wire, 2. Cable reel, 3. Mounting base, 4. Baffle, 41. Base plate, 42. Blocking plate, 43. Mounting bracket, 5. Support bracket, 6. Housing, 7. Elastic element, 8. Support shaft, 9. Guide ring, 10. Cable bundle. 100. Floating roof; 200. Tank wall.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Existing lightning current shunt devices (also known as lightning current shunts) are all made of metal, taking into account the good conductivity of metals in their current diversion principle. However, this results in several drawbacks. During the release and retraction of the shunt conductor, metal-to-metal friction occurs with the cable tray baffle, which can easily lead to frictional discharge. Furthermore, when the shunt conductor is wound around the cable tray, in addition to contacting the tray to divert current, it also comes into contact with the inner wall of the cable tray baffle. This contact is an unreliable electrical connection, especially when current is flowing through it. These contacts can cause the shunt conductor to discharge to the cable tray baffle. This discharge can easily generate electric sparks, which are extremely dangerous in flammable and explosive environments, potentially causing explosions and posing a significant safety hazard.

[0028] To eliminate the aforementioned safety hazards, existing technologies have made various attempts. For example, adding a conductive coating to the surface of the winding magazine aims to increase the current conduction capacity between the shunt conductor and the winding magazine, thereby reducing current shunting caused by contact between the shunt conductor and the magazine baffle. However, the conductive coating is susceptible to wear and corrosion during long-term use, leading to a gradual decline in its performance. Once the coating is damaged, its effectiveness is greatly reduced. Alternatively, some solutions propose optimizing the mechanical structure, such as improving the connection method between the winding magazine and the current conduction structure to increase the contact area and thus enhance the current conduction capacity of the winding magazine. However, although increasing the contact area can relatively reduce contact resistance, stable low-impedance shunting cannot be achieved under high inrush current, meaning that the occurrence of electric sparks is difficult to avoid.

[0029] Against this backdrop, this embodiment proposes a lightning current shunting device. Unlike existing methods that focus on improving the current conduction capacity between the shunting conductor and the winding chamber, this embodiment focuses on reducing or even preventing contact shunting between the shunting conductor and the winding chamber baffle. Based on this, this embodiment breaks through the current diversion principle based on the good conductivity of metals, proposing the use of insulating materials to isolate the shunting conductor, thereby avoiding shunting discharges caused by metal contact.

[0030] like Figures 1 to 3 As shown in the figure, a lightning current shunt device disclosed in this embodiment includes a shunt conductor 1, a current guiding structure, and a baffle 4.

[0031] The shunt conductor 1 is made of metal, and the end of the shunt conductor 1 can be connected to the equipment used in the lightning current shunt device of this embodiment to transfer the current of the equipment to the shunt conductor 1.

[0032] The current-guiding structure includes a winding seat 2 that carries the shunt conductor 1, and the winding seat 2 rotates along its axis. When the shunt conductor 1 is wound around the winding seat 2, the two form a metal-to-metal contact, providing a path for subsequent current diversion. Simultaneously, the winding seat 2 is designed to rotate along its axis, allowing the shunt conductor 1 to be wound or unwound during rotation, thus improving compatibility with application equipment. Baffles 4 are located on both sides of the winding seat 2, and the baffles 4 are perpendicular to the axis of the winding seat 2. At least the portion of the baffle 4 in contact with the shunt conductor 1 includes an insulating layer. The baffles 4 on both sides of the winding seat 2, through their blocking and limiting effect, can hold the shunt conductor 1 on the winding seat 2, improving reliable contact between the shunt conductor 1 and the winding seat 2, thereby enhancing the current diversion capacity and reliability of the entire device. To prevent current shunting between the shunt conductor 1 and the baffle 4 during current diversion, at least the portion of the baffle 4 in contact with the shunt conductor 1 is designed with an insulating layer. Specifically, only the portion of the baffle 4 in contact with the shunt conductor 1 can be designed with an insulating layer, while the other parts are made of metal or other materials; alternatively, the entire side or end face of the baffle 4 in contact with the shunt conductor 1 can be designed with an insulating layer, while the other parts are made of metal or other materials; or the entire baffle 4 can be designed with an insulating material. Furthermore, the baffle 4 can be a one-piece structure or a combination of different structures. By designing the portion of the baffle 4 in contact with the shunt conductor 1 as an insulating material, a metal-insulating material contact is formed, preventing discharge caused by contact friction, and thus preventing electric sparks caused by discharge, improving safety performance, especially in flammable and explosive environments, eliminating the explosion hazard caused by electric sparks generated by discharge.

[0033] The lightning current shunt device in this embodiment uses a shunt conductor 1 and a coil holder 2 to ensure the current diversion of lightning current, bound charges, etc. At the same time, an insulating layer is designed at the part where the baffle 4 contacts the shunt conductor 1, breaking through the principle of relying on the good conductivity of metal in the existing current diversion, so that the baffle 4 and the shunt conductor 1 form a contact between metal and insulating material, so as to avoid the current shunting caused by the contact of two metals, thereby avoiding the risk of electric sparks caused by current shunting, avoiding the risk of explosion caused by electric sparks, and improving the safety performance of use.

[0034] In the specific implementation of this embodiment, the baffle 4 includes a base plate 41 connected to the winding seat 2 and a blocking plate 42 connected to the base plate 41. By designing the baffle 4 into a structure of base plate 41 and blocking plate 42, the base plate 41 is connected to the winding seat 2, providing a foundation for the connection between the baffle 4 and the winding seat 2. At the same time, the blocking plate 42 is designed on the base plate 41 that connects to the foundation. The blocking plate 42 contacts the shunt wire 1 to block and limit it, so that the shunt wire 1 is reliably held on the winding seat 2. The above structure of base plate 41 and blocking plate 42 is beneficial for processing and production and reduces product costs.

[0035] To prevent the baffle plate 42 from forming a metal-to-metal contact with the shunt wire 1, the baffle plate 42 covers at least the side of the substrate 41 facing the shunt wire 1, and the portion of the baffle plate 42 in contact with the shunt wire 1 includes an insulating layer. In other words, the baffle plate 42 isolates the substrate 41 from the shunt wire 1, allowing the shunt wire 1 to contact the baffle plate 42. Furthermore, the material of the contact portion between the baffle plate 42 and the shunt wire 1 is designed to be an insulating material to prevent metal-to-metal frictional discharge during contact, thereby avoiding electrical sparks caused by discharge.

[0036] Specifically, the side of the baffle plate 42 near the shunt wire 1 is made of an insulating layer. In other words, the entire side of the baffle plate 42 is made of insulating material. On the one hand, this increases the area of ​​the insulating material and improves the insulation effect with the shunt wire 1; on the other hand, using the same material for the entire surface makes it easier to process.

[0037] Alternatively, the side of the baffle plate 42 near the shunt wire 1 and the end face of the baffle plate 42 both include an insulating layer. Here, the end face of the baffle plate 42 refers to the protruding end of the baffle plate 42, as shown in the reference... Figure 2 The diagram shows the end of the baffle plate 42 furthest from the coil holder 2, specifically the upper surface of the baffle plate 42 in the illustrated direction. In this specific implementation, in addition to using insulating material on the side of the baffle plate 42 near the shunt wire 1, the end surface of the baffle plate 42 is also made of insulating material to improve the insulation effect on the shunt wire 1 and prevent metal discharge caused by short-term contact between the shunt wire 1 and the end surface of the baffle plate 42 during movement.

[0038] Specifically, the substrate 41 and the winding seat 2 are an integral structure, and the baffle plate 42 covers the side of the substrate 41 facing the shunt wire 1 and the end face of the substrate 41. In this specific implementation, the substrate 41 and the winding seat 2 are designed as an integral structure. Specifically, they can be integrally formed, or they can be connected and fixed by welding, riveting, pinning, screws, etc. For example, refer to... Figure 2 The substrate 41 and the winding base 2 are integrally molded, which facilitates processing and reduces the complexity of production and processing operations.

[0039] The baffle plate 42 covers the side and end face of the substrate 41 facing the shunt wire 1, as shown in the figure. Figure 2 In the baffle 4 on the left side of the winding seat 2, the blocking plate 42 covers the right side and the top side of the substrate 41. In the baffle 4 on the right side of the winding seat 2, the blocking plate 42 covers the left side and the top side of the substrate 41. Thus, the shunt wire 1 wound between the two baffles 4 is in contact with the blocking plate 42 on both sides. Therefore, it is only necessary to design insulating material in the blocking plate 42 to avoid metal-to-metal contact discharge with the shunt wire 1, which is convenient for processing.

[0040] It is known that, in addition to covering the side and end face of the substrate 41 facing the shunt wire 1, the blocking plate 42 can also wrap and cover the exposed surface of the substrate 41 to improve the insulation effect of the entire lightning current shunt device.

[0041] The baffle plate 42 and the substrate 41 are detachably connected, for example, by using screws, pins or the like; or the baffle plate 42 and the substrate 41 are fixedly connected, for example, by using adhesive bonding, welding or injection molding or the like.

[0042] Specifically, the baffle plate 42 has a receiving groove on the side facing the substrate 41, and the substrate 41 is placed in the receiving groove. In this way, the receiving groove designed in the baffle plate 42 can form a wrapping and covering on the substrate 41 in two directions, thereby improving the insulation performance of the entire baffle plate 4. At the same time, the receiving groove can also play a certain limiting and guiding role in the assembly of the substrate 41 and the baffle plate 42, which facilitates processing.

[0043] A mounting bracket 43 is provided between the baffle plates 42 on both sides of the winding seat 2. This mounting bracket 43 is supported by the winding seat 2. At least one side of the base plate 41 of the winding seat 2 is connected and fixed to the baffle plate 42 by fasteners. Connecting and fixing the base plate 41 and the baffle plate 42 with fasteners improves the connection strength and prevents displacement between them during the rotation of the baffle plate 41 with the winding seat 2. Specifically, fasteners can be screws, bolts, pins, etc. Furthermore, fasteners can be used to connect and fix only the base plate 41 and baffle plate 42 on one side of the winding seat 2, or fasteners can be used to connect and fix both the base plate 41 and baffle plate 42 on both sides of the winding seat 2 to improve connection reliability. (Refer to...) Figure 2 In the specific implementation described in this embodiment, the substrate 41 and the winding seat 2 are integrally formed. The baffle plate 42 covers the opposite sides and the top surface of the substrate 41 on both sides of the winding seat 2, thereby forming a space between the two baffle plates 42 and the winding seat 2 to accommodate the shunt wire 1. Furthermore, a mounting bracket 43 is placed between the two baffle plates 42, and this mounting bracket 43 is supported by the winding seat 2. Screws are used to connect and fix the substrate 41, the baffle plate 42, and the mounting bracket 43 from one side, thus enabling the installation of the substrate 41 and the baffle plate 42 of the baffle plates 4 on both sides of the winding seat 2. The pushing action of the mounting bracket 43 on the baffle plates 42 on both sides allows the installation of the baffle plates 4 on both sides of the winding seat 2 to be completed from one side, making the operation convenient.

[0044] In other variations of this embodiment, the base plates 41 and the baffle plates 42 on both sides of the winding base 2 are connected and fixed by fasteners. Along the radial direction of the base plates 41, the connection position of the fasteners is close to or far from the winding base 2. Thus, the base plates 41 and the baffle plates 42 on both sides of the winding base 2 are connected and fixed by fasteners to improve the reliability and stability of the connection between the baffle plates 4 on both sides. At the same time, the connection position of the fasteners can be close to or far from the winding base 2 to facilitate flexible adjustment according to the installation and operating space.

[0045] In this embodiment, the insulating material of the insulating layer is at least one of nylon, polytetrafluoroethylene, bakelite, epoxy resin, silicone rubber, and insulating ceramics. This can improve the strength and service life of the material while ensuring that the 100kA, 10 / 350μS surge current cannot break down the baffle 4, avoid the shunt wire 1 discharging to the baffle 4, eliminate the risk of arcing, and thus guide the current through the designed reliable path to safely lead out the current.

[0046] The surface roughness of the baffle 4 at least in contact with the shunt conductor 1 is low, so as to avoid the formation of tip discharge due to the roughness of the surface of the baffle 4 and improve the safety and reliability of the entire lightning current shunt device.

[0047] Specifically, the thickness of the insulating material is positively correlated with the current value of the shunt conductor 1. By relating the thickness of the insulating material to the current value flowing through the shunt conductor 1, for example, when the current value flowing through the shunt conductor 1 is large, the thickness of the insulating material can be appropriately increased, which can improve the applicability of the lightning shunt in this embodiment and adapt it to various types of application equipment. For example, the thickness of the insulating material can be designed to be 10mm to achieve a good balance between insulation and anti-sparking performance and economic cost.

[0048] The advantage of using insulating material for the insulation portion of baffle 4 is that the insulating material has excellent insulation properties, with a breakdown field strength >200kV / mm. This data means that even under extremely high voltage, the insulating material can still maintain a good insulation state, effectively preventing current breakdown and avoiding the risk of arcing caused by discharge. Tests showed that under a 100kA impulse current, there was no discharge or arcing between the shunt conductor 1 and baffle 4, which improves the safety of the lightning current shunt device and avoids impedance increases caused by insulation failure and arcing, thus enhancing stability during long-term operation.

[0049] Furthermore, the use of insulating materials facilitates low-impedance, stable current shunt. In this embodiment, a short, straight conductive path is used in the conductive path design to reduce resistance and inductance during current transmission. The current-conducting ring 9 and the support shaft 8 are connected in a ring shape, which improves the reliability of the electrical connection and reduces contact resistance. Simultaneously, the low dielectric constant of the insulating material plays a crucial role, effectively reducing the impact of parasitic capacitance and further reducing the inductive effect under lightning current impact. This allows the lightning current shunt device to quickly and stably guide current to the ground during lightning current impact, improving the safety of the application equipment.

[0050] Furthermore, using insulating materials enhances the environmental adaptability of the lightning current shunt device. In terms of corrosion resistance, insulating materials can withstand the erosion of various corrosive substances such as acids, alkalis, and salt spray. For example, in petrochemical storage tank areas along the coast, the salt and moisture in the air are extremely corrosive to the equipment. Existing lightning current shunt devices are prone to rust and corrosion in such environments, leading to a decline in equipment performance. For instance, the nylon-based lightning shunt in this embodiment significantly extends its service life, reducing maintenance costs and improving reliability. Additionally, the self-lubricating properties of nylon reduce wear on the shunt conductor 1, ensuring the long-term stable operation of the lightning shunt.

[0051] In the specific implementation of this embodiment, the lightning current shunt device also includes a housing 6. The housing 6 is provided with an elastic element 7 that provides the retraction force of the shunt wire 1 and a support shaft 8 that carries the elastic element 7. A guide ring 9 is installed on the part of the support shaft 8 that extends into the winding seat 2. The guide ring 9 is in contact with the winding seat 2.

[0052] By incorporating an elastic element 7, such as a spring or coil spring, within the housing 6, the elastic force of the elastic element 7 drives the housing 6 to rotate, which in turn drives the winding seat 2 to rotate, keeping the shunt conductor 1 at its minimum extension length. Thus, in use, the lightning current shunt device of this embodiment can effectively reduce the extension length of the shunt conductor 1, keeping the device in a state of minimum impedance. This is because impedance is closely related to the length of the shunt conductor 1; a shorter shunt conductor 1 ensures the device is in a state of minimum impedance, allowing the lightning current to be quickly and efficiently conducted to the ground.

[0053] Furthermore, a current-guiding ring 9 is installed on the support shaft 8, and the current-guiding ring 9 contacts the winding seat 2. This allows the current transmitted between the winding seat 2 and the shunt wire 1 to be transmitted to the support shaft 8 through the current-guiding ring 9, and then safely led out through the support frame 5. In this way, by utilizing the current transmission through the current-guiding ring 9, a tight dynamic contact can be maintained with it during rotation, thereby improving the stability and reliability of conductivity, effectively reducing contact resistance, forming a low-impedance electrical path, and preventing current from discharging to the baffles 4 on the left and right sides through the shunt wire 1, thus improving safety and eliminating the risk of arcing. Specifically, the current-guiding ring 9 is composed of four sets of high-copper brushes, evenly distributed circumferentially. The brushes make arc-shaped contact with the support shaft 8 to improve the tightness of the fit with the support shaft 8.

[0054] In this specific implementation, the shunt conductor 1 uses tin-plated copper braided strip. The tin plating enhances its oxidation and corrosion resistance, ensuring good conductivity even in harsh environments. The current-guiding ring 9 uses a high-copper carbon brush with a copper content of over 90%, which significantly reduces contact resistance and improves conductivity, allowing current to flow smoothly. A terminal block is designed at the suspension end of the shunt conductor 1. This terminal block is fixed with stainless steel bolts, and conductive paste is applied to the contact surface to reduce contact resistance and improve the reliability of the electrical connection.

[0055] When subjected to a lightning current surge, the shunt conductor 1 forms a reliable electrical path through the current-conducting ring 9 inside the coil holder 2 and the support shaft 8. The four sets of brushes of the current-conducting ring 9 are in close contact with the support shaft 8, ensuring continuity of conductivity even during the rotation of the coil holder 2, and ensuring that the lightning current can be quickly discharged along this preset current path. Compared with existing lightning shunts, which are prone to forming an unreliable electrical path that is easily sparked due to the characteristics of metal materials, this embodiment uses an insulating baffle 4 to avoid the possibility of discharge between the shunt conductor 1 and the baffle 4, thereby guiding the current to flow through the preset reliable current path, avoiding the risk of sparks generated by the equipment itself, improving the efficiency and stability of the shunt, and achieving a total impulse impedance of less than 3Ω for the shunt conductor 1 without sparking, providing reliable lightning protection for facilities in flammable and explosive locations.

[0056] Reference Figure 3 Taking the application of the lightning current diversion device in an oil tank as an example, the oil tank includes a tank wall 200 and a floating roof 100. The end of the diversion wire 1 of the lightning current diversion device in this embodiment is connected to the floating roof 100, and the mounting base 3 is connected to the tank wall 200.

[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A lightning current shunt device, characterized in that, include: Shunt wire; A flow guiding structure, the flow guiding structure including a winding seat that carries the shunt wire, the winding seat rotating along an axis; A baffle is provided on both sides of the winding seat, the baffle is perpendicular to the axis of the winding seat, and the portion of the baffle that contacts the shunt conductor includes an insulating layer.

2. The lightning current shunt device according to claim 1, characterized in that: The baffle includes a base plate connected to the winding seat and a blocking plate connected to the base plate. The blocking plate covers at least one side of the base plate facing the shunt wire, and the portion of the blocking plate in contact with the shunt wire includes an insulating layer.

3. A lightning current shunt device according to claim 2, characterized in that: The sides of the baffle plate near the shunt wire all include an insulating layer; Alternatively, the side of the baffle plate near the shunt wire and the end face of the baffle plate may include an insulating layer.

4. A lightning current shunt device according to claim 2 or 3, characterized in that: The substrate and the winding seat are an integral structure, and the blocking plate covers the side of the substrate facing the shunt wire and the end face of the substrate.

5. A lightning current shunt device according to claim 2, characterized in that: The blocking plate has a receiving groove on the side facing the substrate, and the substrate is placed in the receiving groove.

6. A lightning current shunt device according to claim 5, characterized in that: A mounting bracket is provided between the blocking plates on both sides of the winding seat. The mounting bracket is supported by the winding seat. At least one of the base plates on one side of the winding seat is connected and fixed to the blocking plate by fasteners.

7. A lightning current shunt device according to claim 5, characterized in that: The base plates on both sides of the winding seat are connected and fixed to the blocking plate by fasteners. Along the radial direction of the base plates, the connection position of the fasteners is close to or far away from the winding seat.

8. A lightning current shunt device according to claim 1, characterized in that: The insulating material of the insulating layer is at least one of nylon, polytetrafluoroethylene, bakelite, epoxy resin, silicone rubber, and insulating ceramics.

9. A lightning current shunt device according to claim 8, characterized in that: The thickness of the insulating material is positively correlated with the current value of the shunt conductor.

10. A lightning current shunt device according to claim 1, characterized in that, Also includes: The housing contains an elastic element that provides the retraction force of the shunt wire and a support shaft that supports the elastic element. A guide ring is installed on the portion of the support shaft that extends into the winding seat, and the guide ring contacts the winding seat.

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