Bus duct with good fireproof performance
By designing side insulation plates, top insulation plates, and middle plates in the busbar trunking, combined with sealing gaskets and positioning protrusions, the fire resistance and sealing performance of the busbar trunking are enhanced, solving the problem of insufficient fire resistance and improving safety and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHONG XINGDA ELECTRIC POWER EQUIP
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-24
AI Technical Summary
The existing busbar trunking has insufficient fire resistance, which may further exacerbate the danger in the event of a fire.
The design incorporates side insulation panels, top insulation panels, and a middle panel structure, which, together with the top and side steel plates, enhances the insulation capacity. Furthermore, the sealing is strengthened through structures such as gaskets and positioning protrusions, forming a multi-layered protection.
It improves the fire resistance of the busbar trunking, reduces the impact of external temperature on the interior, enhances the stability and sealing of the installation, and improves safety.
Smart Images

Figure CN224164597U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of busbar technology, specifically relating to a busbar with good fire resistance. Background Technology
[0002] Busbar trunking is a power transmission device composed of copper or aluminum conductors, insulating material, and metal troughs. It is primarily used for the transmission and distribution of high currents, and is commonly found in high-rise buildings, factories, commercial centers, and other locations requiring efficient power transmission.
[0003] Currently, busbar trunking is usually protected by a casing during use. However, the fire resistance of the busbar trunking itself is insufficient. In the event of a fire, the busbar trunking may become heated, leading to further danger. Therefore, it is necessary to design a busbar trunking with good fire resistance to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a busbar trunking with good fire resistance 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 good fire resistance, comprising a top steel plate and a side steel plate installed on one side of the top steel plate, a middle plate provided on one side of the side steel plate, a side heat insulation plate provided on the inner side of the middle plate, a top heat insulation plate provided at both ends of the middle plate, a positioning plate provided on the inner side of the middle plate and the top heat insulation plate, a busbar main plate installed on the inner side of the positioning plate, and sealing gaskets provided at both ends of the middle plate.
[0006] Preferably, the middle plate and the side steel plate are U-shaped, the side heat insulation plate is located inside the middle plate, and the side steel plate is pressed against one side of the side heat insulation plate.
[0007] Preferably, a positioning protrusion is provided on one side of the top steel plate, and a positioning slot is provided on one side of the side steel plate, with the positioning protrusion installed inside the positioning slot.
[0008] Preferably, a sealing seat is provided on one side of the middle plate, the sealing seat is engaged with the inner side of the side heat insulation plate, and a sealing top post is provided at one end of the sealing seat, the sealing top post being supported on the sealing gasket.
[0009] Preferably, a sealing spring is provided on the inner side of the sealing seat, and one end of the sealing top post is slidably installed in the sealing seat and presses against the sealing spring.
[0010] Preferably, the sealing gasket has a sealing top plate inside, and one end of the sealing top post presses against the sealing top plate.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. Through the design of side insulation panels, top insulation panels and middle panels, the middle panel is used to install the side insulation panels and top insulation panels during use, and the side insulation panels and top insulation panels enhance the heat insulation capacity during use. Combined with the barrier of the top steel plate and side steel plate, it provides better protection for the interior.
[0013] 2. Through the design of the sealing gasket and positioning protrusion, the positioning protrusion facilitates quick and easy positioning and installation of the side steel plate and the middle plate during use, while the sealing gasket strengthens the sealing of the inner side, thereby enhancing protection and reducing the impact of external temperature on the interior. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;
[0016] Figure 3 This is a schematic diagram of the sealing structure of this utility model;
[0017] In the diagram: 1. Top steel plate; 2. Side steel plate; 3. Middle plate; 4. Side heat insulation plate; 5. Top heat insulation plate; 6. Positioning plate; 7. Busbar main plate; 8. Positioning protrusion; 9. Positioning slot; 10. Sealing gasket; 11. Sealing top plate; 12. Sealing top column; 13. Sealing seat; 14. Sealing spring. Detailed Implementation
[0018] 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.
[0019] Example 1: Please refer to Figures 1 to 3This utility model provides a technical solution: a busbar trunking with good fire resistance, comprising a top steel plate 1 and side steel plates 2 installed on one side of the top steel plate 1. A middle plate 3 is provided on one side of the side steel plate 2, a side heat insulation plate 4 is provided on the inner side of the middle plate 3, and top heat insulation plates 5 are provided at both ends of the middle plate 3. A positioning plate 6 is provided on the inner side of the middle plate 3 and the top heat insulation plate 5, and a busbar main plate 7 is installed on the inner side of the positioning plate 6. Sealing gaskets 10 are provided at both ends of the middle plate 3. The side heat insulation plate 4 is installed inside the middle plate 3, and the middle plate 3 is positioned between the side steel plates 2 through positioning slots 9. The side heat insulation plate 4 and the positioning plate 6 are installed between the middle plate 3, and the busbar main plate 7 is installed in the positioning slots 9. Inside plate 6, the heat insulation capacity of the side heat insulation plate 4 and the top heat insulation plate 5 are enhanced by the protection of the top steel plate 1 and the side steel plate 2 during use, thus strengthening fire resistance. The middle plate 3 and the side steel plate 2 are U-shaped, with the side heat insulation plate 4 located inside the middle plate 3 and the side steel plate 2 pressing on one side of the side heat insulation plate 4, making it convenient to install the side heat insulation plate 4 and the middle plate 3 during use. A positioning protrusion 8 is provided on one side of the top steel plate 1, and a positioning groove 9 is provided on one side of the side steel plate 2. The positioning protrusion 8 is installed inside the positioning groove 9. During use, the side steel plate 2 is installed on one side of the top steel plate 1 by the engagement of the positioning protrusion 8 and the positioning groove 9, ensuring more stable installation and positioning.
[0020] As can be seen from the above description, this utility model has the following beneficial effects: when in use, the side heat insulation plate 4 and the top heat insulation plate 5 are installed through the middle plate 3, and the heat insulation capacity is enhanced by the side heat insulation plate 4 and the top heat insulation plate 5. Combined with the barrier of the top steel plate 1 and the side steel plate 2, it provides better internal protection.
[0021] Example 2: Please refer to Figures 1 to 3 As shown, based on Embodiment 1, this utility model provides a technical solution: a sealing seat 13 is provided on one side of the middle plate 3, the sealing seat 13 is engaged with the inner side of the side heat insulation plate 4, a sealing top post 12 is provided at one end of the sealing seat 13, the sealing top post 12 is supported on the sealing gasket 10, the sealing seat 13 and the side heat insulation plate 4 are engaged to ensure greater stability during use, and the sealing gasket 10 is sealed by the support of the sealing top post 12; a sealing spring 14 is provided on the inner side of the sealing seat 13, one end of the sealing top post 12 is slidably installed in the sealing seat 13 and pressed on the sealing spring 14, a sealing top plate 11 is provided inside the sealing gasket 10, one end of the sealing top post 12 is pressed on the sealing top plate 11, the sealing top post 12 is pushed by the elastic force of the sealing spring 14 to support the sealing top post 12 on the sealing top plate 11, and the sealing top plate 11 is supported on the inner side of the sealing gasket 10.
[0022] By adopting the above technical solution, the positioning protrusion 8 facilitates quick and easy positioning and installation of the side steel plate 2 and the middle plate 3, and the sealing gasket 10 strengthens the sealing of the inner side, thereby enhancing protection and reducing the impact of external temperature on the interior.
[0023] The working principle and usage process of this utility model are as follows: During use, the side steel plate 2 is installed on one side of the top steel plate 1 by the engagement of the positioning protrusion 8 and the positioning slot 9. The side heat insulation plate 4 is installed inside the middle plate 3, and the middle plate 3 is positioned between the side steel plates 2 by the positioning slot 9. The side heat insulation plate 4 and the positioning plate 6 are installed between the middle plate 3. The busbar main plate 7 is installed inside the positioning plate 6. During use, the heat insulation capacity of the side heat insulation plate 4 and the top heat insulation plate 5, along with the protection of the top steel plate 1 and the side steel plate 2, enhances fire resistance. When the top steel plate 1 and the side steel plate 2 are fixed, the top steel plate 1 presses on the sealing gasket 10. The sealing spring 14 pushes the sealing top column 12 to be supported on the sealing top plate 11. The sealing top plate 11 is supported inside the sealing gasket 10, thereby making the sealing gasket 10 tightly attached to the connection between the top steel plate 1 and the middle plate 3 to enhance the seal.
[0024] 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.
[0025] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A busbar trunking system with good fire resistance, comprising a top steel plate (1) and a side steel plate (2) installed on one side of the top steel plate (1), characterized in that: A middle plate (3) is provided on one side of the side steel plate (2), a side heat insulation plate (4) is provided on the inner side of the middle plate (3), a top heat insulation plate (5) is provided at both ends of the middle plate (3), a positioning plate (6) is provided on the inner side of the middle plate (3) and the top heat insulation plate (5), a busbar main plate (7) is installed on the inner side of the positioning plate (6), and a sealing gasket (10) is provided at both ends of the middle plate (3).
2. The bus duct of claim 1, wherein: The middle plate (3) and the side steel plate (2) are U-shaped, the side heat insulation plate (4) is located inside the middle plate (3), and the side steel plate (2) is pressed on one side of the side heat insulation plate (4).
3. The bus duct of claim 1, wherein: The top steel plate (1) has a positioning protrusion (8) on one side, and the side steel plate (2) has a positioning slot (9) on one side. The positioning protrusion (8) is installed inside the positioning slot (9).
4. The bus duct of claim 1, wherein: A sealing seat (13) is provided on one side of the middle plate (3). The sealing seat (13) is engaged with the inner side of the side heat insulation plate (4). A sealing top post (12) is provided at one end of the sealing seat (13). The sealing top post (12) is supported on the sealing gasket (10).
5. The bus duct of claim 4, wherein: A sealing spring (14) is provided on the inner side of the sealing seat (13), and one end of the sealing top post (12) is slidably installed in the sealing seat (13) and pressed on the sealing spring (14).
6. The bus duct of claim 4, wherein: The sealing gasket (10) has a sealing top plate (11) inside, and one end of the sealing top post (12) presses on the sealing top plate (11).