Bus duct with fireproof anti-corrosion protection structure

By introducing vents, sealing plates, and support frames into the busbar trunking, the problems of poor heat dissipation and inconvenient installation of the busbar trunking have been solved, achieving effective heat dissipation, corrosion prevention, and convenient maintenance, and improving the fire resistance of the busbar trunking and the reliability of the power system.

CN224177878UActive Publication Date: 2026-04-28WANBOLUN MECHANICAL & ELECTRICAL EQUIPMENT (GUANGZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WANBOLUN MECHANICAL & ELECTRICAL EQUIPMENT (GUANGZHOU) CO LTD
Filing Date
2025-04-21
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Poor heat dissipation during the use of busbar trunking leads to a decrease in the conductor's current-carrying capacity and an increase in temperature, which may cause safety accidents. In addition, the inconvenience of installation and disassembly makes fault repair difficult and affects the reliability of the power system.

Method used

The design incorporates vents, sealing plates, support frames, and fans to achieve effective heat dissipation, corrosion protection, and easy maintenance. The vents facilitate heat dissipation and dehumidification, the sealing plates block open flames in case of fire, and the support frames facilitate the installation and removal of the conductive busbars.

Benefits of technology

It improves the fire resistance and corrosion resistance of busbar trunking, extends the service life of conductor bars, enhances the reliability and safety of power systems, and reduces maintenance costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of bus ducts, and discloses a bus duct with a fireproof anticorrosion protection structure. Comprising a shell and further comprises air holes formed in the inner wall of the shell, sealing plates are arranged on the two sides of the shell in a sliding mode, and inserting grooves are formed in the bottoms of the sealing plates. Heat dissipation and dehumidification can be conducted on the interior of the shell through the air holes, and therefore the situation that an insulating layer is damaged or corroded due to overheating or moisture of an internal conducting bar is prevented; by arranging a sealing plate, open fire can be conveniently prevented from entering the shell when a fire disaster occurs, so that the fire resistance of the bus duct is conveniently improved, and by arranging a supporting frame and a limiting plate which are matched for use, the conducting bar can be conveniently maintained, disassembled and assembled, so that the service life of the bus duct is prolonged. Therefore, the line can be repaired in time when a fault occurs, and the reliability of a power system is improved.
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Description

Technical Field

[0001] This utility model relates to the field of busbar technology, specifically to a busbar with a fire-resistant and corrosion-resistant protective structure. Background Technology

[0002] Busbar trunking is an enclosed metal device made of copper or aluminum busbar columns, used to distribute high-power electricity to various components of a distributed system. It is an important component of modern power transmission trunk line engineering, especially in indoor low-voltage power transmission, where busbar trunking has gradually become a substitute for wires and cables. With its efficient power transmission capacity, busbar trunking ensures the stable operation of the power system and meets the needs of large-scale power transmission.

[0003] Busbar trunking is widely used in various buildings such as high-rise buildings, large public facilities, industrial plants, and data centers, becoming an indispensable key component in modern power distribution systems. In current practical use, poor heat dissipation in busbar trunking can lead to a decrease in conductor current-carrying capacity as temperatures rise; conversely, decreased current-carrying capacity exacerbates temperature increases. This not only affects the normal operation of the busbar trunking but may also cause safety accidents. Poor ventilation can also cause insulation corrosion and damage due to moisture. Furthermore, if the busbar trunking makes it difficult to install and dismantle lines, timely and effective repairs may be impossible in the event of a line fault, leading to an expansion of the fault area or a prolonged duration. This reduces the reliability of the power system, increases the risk of power outages, and causes inconvenience to users' normal electricity consumption. Utility Model Content

[0004] The purpose of this utility model is to provide a busbar trunking with a fire-resistant and corrosion-resistant protective structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a busbar trunking with a fire-resistant and corrosion-resistant protective structure, including a shell, and further comprising:

[0006] Ventilation holes are provided on the inner wall of the outer shell, and sealing plates slide on both sides of the outer shell. Insertion grooves are provided at the bottom of the sealing plates, and sealing strips are fixed on both sides of the outer shell.

[0007] A support frame is installed on the inner wall of the housing. A conductive busbar is installed on the inner wall of the support frame. A limiting plate for limiting the conductive busbar is rotatably connected to the outer side of the support frame. A connecting rod is fixed on the inner wall of the limiting plate. A limiting hole for cooperating with the limiting plate is opened on the inner wall of the support frame.

[0008] Preferably, a fixing rod is fixed to the inner wall of the support frame, a sliding rod is slidably connected to the inner wall of the fixing rod, and a first spring is provided on the outer side of the sliding rod.

[0009] Preferably, a protective plate is installed on the top of the outer shell, and a bolt is rotatably connected to the inner wall of the protective plate, with the outer side of the bolt threadedly connected to the inner wall of the outer shell.

[0010] Preferably, a fixing ring is fixed to the top of the outer shell, and a mounting rod is rotatably connected to the outer side of the fixing ring.

[0011] Preferably, a mounting block is fixed to the top of the outer casing, a second spring is fixed to one side of the mounting block, and one end of the second spring is fixedly connected to the inner wall of the mounting rod.

[0012] Preferably, one end of the mounting rod is fixedly connected to a pull rod, and a limit block is fixed to the outer side of the sealing plate.

[0013] Preferably, a fan is installed on one side of the housing, and a handle is fixed to the top of the sealing plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention features ventilation holes to dissipate heat and dehumidify the interior of the casing, preventing damage or corrosion to the insulation layer of the internal conductors due to overheating or moisture, thus extending the service life of the conductors. The sealing plate prevents open flames from entering the casing during a fire, improving the fire resistance of the busbar. The combination of the support frame and the limiting plate facilitates maintenance and disassembly of the conductors, enabling timely repair of the circuit in case of faults and increasing the reliability of the power system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of the busbar trunking with a fire-resistant and corrosion-resistant protective structure provided by this utility model.

[0017] Figure 2 This is a structural schematic diagram of the present invention;

[0018] Figure 3 This is a structural schematic diagram of the present invention;

[0019] Figure 4 for Figure 3 A magnified structural diagram of point B is shown below;

[0020] Figure 5 for Figure 2 A magnified structural diagram of point A shown.

[0021] In the diagram: 1. Outer shell; 2. Vent hole; 3. Sealing plate; 4. Insertion groove; 5. Sealing strip; 6. Support frame; 7. Conductive busbar; 8. Limiting plate; 9. Connecting rod; 10. Limiting hole; 11. Fixing rod; 12. Sliding rod; 13. First spring; 14. Bolt; 15. Protective plate; 16. Fixing ring; 17. Mounting rod; 18. Mounting block; 19. Second spring; 20. Pull rod; 21. Limiting block; 22. Fan; 23. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 As shown, a busbar trunking with a fire-resistant and corrosion-resistant protective structure includes an outer shell 1, a vent 2 opened on the inner wall of the outer shell 1, a sealing plate 3 sliding on both sides of the outer shell 1, a plug groove 4 opened at the bottom of the sealing plate 3, and a sealing strip 5 fixed on both sides of the outer shell 1.

[0024] Ventilation holes 2 allow for heat dissipation and ventilation of the interior of the outer casing 1, thereby ventilating and dehumidifying the conductive busbar 7 inside the outer casing 1. This prevents damage to the insulation layer of the conductive busbar 7 due to moisture or overheating, thus extending the life of the circuit and reducing maintenance costs. The sealing plate 3 can open and close the ventilation holes 2 to prevent damage to the internal circuitry from open flames in the event of an external fire, thereby increasing the fire resistance of the circuitry. The sealing plate 3 should be made of heat-insulated color steel sandwich panel. The heat-insulated color steel sandwich panel is made of two layers of steel plates pressed together, with heat-insulating materials such as polystyrene added in the middle layer and bonded together with high-strength adhesive. This structure not only has excellent heat insulation performance, but also effectively prevents water vapor condensation and keeps the interior dry. At the same time, the outer layer of the color steel plate has good weather resistance and corrosion resistance, increasing the material's strength and durability. The use of the insertion groove 4 and the sealing strip 5 can easily increase the sealing performance when the sealing plate 3 is closed, thereby preventing external heat or water vapor from entering the interior of the outer casing 1.

[0025] A support frame 6 is installed on the inner wall of the outer casing 1. A conductive busbar 7 is installed on the inner wall of the support frame 6. A limiting plate 8 for limiting the conductive busbar 7 is rotatably connected to the outer side of the support frame 6. A connecting rod 9 is fixed on the inner wall of the limiting plate 8. A limiting hole 10 for use with the limiting plate 8 is opened on the inner wall of the support frame 6.

[0026] The support frame 6 provides a fulcrum for the installation of the conductive busbar 7. The limiting plate 8 facilitates the installation and disassembly of the conductive busbar 7 when needed, thereby facilitating timely maintenance and repair of the line in case of a fault, and increasing the reliability of the power system. Pulling the connecting rod 9 can drive the limiting plate 8 to open and close, thereby facilitating the maintenance of the conductive busbar 7. The limiting hole 10 can be engaged with the limiting plate 8 to prevent the conductive busbar 7 from falling off due to abnormal factors.

[0027] A fixing rod 11 is fixed to the inner wall of the support frame 6, and a sliding rod 12 is slidably connected to the inner wall of the fixing rod 11. A first spring 13 is provided on the outer side of the sliding rod 12.

[0028] The fixing rod 11 can provide a fulcrum for the installation of the slide rod 12 and the first spring 13. The sliding of the slide rod 12 will compress the first spring 13, thereby limiting the conductive busbar 7 due to the reaction force of the first spring 13, preventing the conductive busbar 7 from rubbing against the support frame 6 due to shaking and damaging the insulation layer.

[0029] A protective plate 15 is installed on the top of the outer casing 1. A bolt 14 is rotatably connected to the inner wall of the protective plate 15, and the outer side of the bolt 14 is threadedly connected to the inner wall of the outer casing 1.

[0030] The protective plate 15 and the bolt 14 work together to easily open or close the top of the conductive bar 7, thus facilitating maintenance of the conductive bar 7 when needed.

[0031] A retaining ring 16 is fixed to the top of the outer casing 1, and a mounting rod 17 is rotatably connected to the outside of the retaining ring 16.

[0032] The fixed ring 16 provides a fulcrum for the rotation of the mounting rod 17, and the mounting rod 17 provides a fulcrum for the installation of the tie rod 20.

[0033] A mounting block 18 is fixed to the top of the outer casing 1, and a second spring 19 is fixed to one side of the mounting block 18. One end of the second spring 19 is fixedly connected to the inner wall of the mounting rod 17.

[0034] The mounting block 18, in conjunction with the second spring 19, can conveniently limit the mounting rod 17, thereby preventing the pull rod 20 from falling off the inner wall of the limiting block 21.

[0035] One end of the mounting rod 17 is fixedly connected to a pull rod 20, and a limit block 21 is fixed to the outside of the sealing plate 3.

[0036] The combined use of the pull rod 20 and the limiting block 21 can facilitate the limiting of the pulled-up sealing plate 3, thereby facilitating heat dissipation and dehumidification of the conductive busbar 7 inside the outer casing 1.

[0037] A fan 22 is installed on one side of the outer casing 1, and a handle 23 is fixed to the top of the sealing plate 3.

[0038] The fan 22 is designed to assist the interior of the outer casing 1 in heat dissipation and dehumidification, while the handle 23 allows for easy raising and lowering of the sealing plate 3.

[0039] Working principle: First, when dehumidification and heat dissipation are needed, pull handle 23. Handle 23 will lift the sealing plate 3. After reaching the appropriate position, pull rod 20 will move the mounting rod 17 around the axis of the fixing ring 16. Then, align one end of pull rod 20 with the hole of the limiting block 21 and insert it. Due to the limiting effect of the second spring 19, pull rod 20 will engage with the limiting block 21, preventing the sealing plate 3 from falling. Then, start the fan 22 to dissipate heat and dehumidify the interior of the outer casing 1. In case of fire, pull rod 20 will disengage. Limit block 21, at this time the sealing plate 3 will fall, and then the insertion groove 4 will engage with the sealing strip 5, thereby preventing open flame from entering the interior of the outer shell 1. Since the sealing plate 3 is made of heat insulation material, it can also prevent the internal temperature of the outer shell 1 from rising rapidly, thereby improving the heat resistance of the busbar trunking and giving the staff time to extinguish the fire. When it is necessary to maintain or replace the conductive busbar 7, first turn the bolt 14. After the bolt 14 is disengaged from the outer shell 1, remove the protective plate 15, and then pull the connecting rod 9. At this time, the limit plate 8 will disengage from the limit hole 10 and rotate along one side of the support frame 6. At this time, the conductive busbar 7 can be maintained or replaced.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A busbar trunking system with a fire-resistant and corrosion-resistant protective structure, comprising a housing (1), characterized in that, Also includes: Ventilation holes (2) are opened on the inner wall of the outer shell (1), and sealing plates (3) are slidably provided on both sides of the outer shell (1). Insertion grooves (4) are opened at the bottom of the sealing plates (3), and sealing strips (5) are fixed on both sides of the outer shell (1). A support frame (6) is installed on the inner wall of the outer casing (1). A conductive busbar (7) is installed on the inner wall of the support frame (6). A limiting plate (8) for limiting the conductive busbar (7) is rotatably connected to the outer side of the support frame (6). A connecting rod (9) is fixed on the inner wall of the limiting plate (8). A limiting hole (10) for cooperating with the limiting plate (8) is opened on the inner wall of the support frame (6).

2. The busbar trunking with a fire-resistant and corrosion-resistant protective structure according to claim 1, characterized in that: The inner wall of the support frame (6) is fixed with a fixing rod (11), and the inner wall of the fixing rod (11) is slidably connected with a slide rod (12). A first spring (13) is provided on the outer side of the slide rod (12).

3. A busbar trunking system with a fire-resistant and corrosion-resistant protective structure according to claim 1, characterized in that: The top of the outer shell (1) is fitted with a protective plate (15), and the inner wall of the protective plate (15) is rotatably connected with a bolt (14), and the outer side of the bolt (14) is threadedly connected to the inner wall of the outer shell (1).

4. A busbar trunking system with a fire-resistant and corrosion-resistant protective structure according to claim 1, characterized in that: A fixing ring (16) is fixed to the top of the outer shell (1), and an installation rod (17) is rotatably connected to the outside of the fixing ring (16).

5. A busbar trunking system with a fire-resistant and corrosion-resistant protective structure according to claim 1, characterized in that: The top of the outer casing (1) is fixed with a mounting block (18), and a second spring (19) is fixed on one side of the mounting block (18), and one end of the second spring (19) is fixedly connected to the inner wall of the mounting rod (17).

6. A busbar trunking with a fire-resistant and corrosion-resistant protective structure according to claim 4, characterized in that: One end of the mounting rod (17) is fixedly connected to a pull rod (20), and a limit block (21) is fixed to the outside of the sealing plate (3).

7. A busbar trunking system with a fire-resistant and corrosion-resistant protective structure according to claim 1, characterized in that: A fan (22) is installed on one side of the outer casing (1), and a handle (23) is fixed to the top of the sealing plate (3).