A type of bus trunking

Abstract

This utility model discloses a busbar trunking system, comprising an aluminum alloy shell and multiple conductors arranged side by side. The aluminum alloy shell includes two parallel side plates and two cover plates symmetrically fixed to the side plates. The two side plates and the two cover plates enclose a receiving cavity a. The conductors are covered with an insulating layer. Multiple fasteners are also included, which force the side plates to approach each other, so that adjacent conductors are close, touching, or pressed together. The receiving cavity a is filled with insulating material, which significantly reduces the amount of epoxy resin used while ensuring insulation requirements, thereby reducing production costs. Simultaneously, this structure improves the busbar trunking's waterproofness and prevents conductor corrosion, while also making it easier for conductor heat to be conducted to the side plates, avoiding heat accumulation and excessively high operating temperatures. Furthermore, heat sinks are provided on the side plates, and folded edges are provided on the cover plates, which significantly improves heat dissipation performance, thereby further controlling the operating temperature of the busbar trunking.

Description

Technical Field

[0001] This utility model belongs to the field of power transmission component technology, specifically relating to a busbar trunking. Background Technology

[0002] Busbar trunking is a closed metal device composed of copper or aluminum busbar columns, used to distribute larger power to various components in a distributed system. It has increasingly replaced electrical wires and cables in indoor low-voltage power transmission trunk line projects. With the rapid development of cities and the increasing number of high-rise buildings, the electrical load on buildings has increased dramatically. Traditional electrical wires and cables, due to their small capacity, inconvenient branching, and difficulty in bundled management, are gradually being replaced by busbar trunking, which offers larger capacity, easier branching, and more convenient bundled management. Busbar trunking is widely used in key projects such as power transmission trunk lines for fire fighting equipment and emergency fire equipment trunk lines, including important projects such as hotels, airports, and subways. Therefore, the waterproofing, heat dissipation, and safety and stability of busbar trunking products are crucial. Furthermore, the bundled arrangement of busbar trunking usually generates a lot of heat, so the heat dissipation problem of busbar trunking also needs to be solved. In addition, the conductors in the busbar trunking often corrode due to water leakage or dampness, which damages the conductor structure. Corroded conductors have poor heat dissipation capacity, and if the corrosion is severe enough, it will have an adverse effect on the structure and performance of the conductor itself.

[0003] Traditional busbar trunking typically uses a large-section aluminum alloy tank with multiple conductors arranged side-by-side inside, spaced far apart. Isolation between conductors is achieved by potting the tank with insulating materials such as epoxy resin. This method of busbar trunking has two main drawbacks. First, the large cross-sectional area of ​​the tank requires a large amount of epoxy resin and other insulating materials, increasing the cost of the busbar trunking and raising its selling price, thus reducing the company's market competitiveness. Second, the poor thermal conductivity of the potting insulating material makes it difficult for the conductors to dissipate heat quickly through the tank, easily leading to localized heat accumulation and excessively high operating temperatures. Summary of the Invention

[0004] The purpose of this utility model is to provide a busbar trunking system that, while ensuring isolation between conductors, can significantly reduce the amount of potting insulation material used, and also solves the problems of poor heat dissipation in busbar trunking systems, resulting in excessively high temperatures and heat accumulation.

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: A busbar trunking includes an aluminum alloy shell and multiple conductors arranged side by side. The aluminum alloy shell includes two parallel side plates and two cover plates symmetrically fixed to the side plates. The two side plates and the two cover plates enclose a receiving cavity a. The conductors are covered with an insulating layer. The trunking also includes multiple fasteners that force the two side plates to move closer to each other, so that adjacent conductors are close to, touching or pressed together. The receiving cavity a is filled with insulating material.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the fasteners are arranged side by side and symmetrically.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the side plate has connecting edges extending vertically outward from its two edges along its length direction, and the connecting edges are fitted and connected to the cover plate.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: multiple heat dissipation strips extend outward from the side plate away from the accommodating cavity a.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the width of the cover plate is greater than the maximum distance between the two side plates, and folded edges extend symmetrically at both edges of the cover plate.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the extension direction of the folded edge is toward the direction where the side plate is located, and is perpendicular to the cover plate.

[0011] Based on the above solution and as a preferred embodiment of the above solution: a groove is provided on the end face of the connecting edge that contacts the cover plate.

[0012] Based on the above solution and as a preferred embodiment of the above solution: the cover plate is riveted to the connecting edge.

[0013] Based on the above scheme and as a preferred embodiment of the above scheme: the cover plate has continuous toothed grooves on the surface opposite to the connecting edge.

[0014] The outstanding and beneficial technical effects of this utility model compared with the prior art are as follows: the busbar trunking of this application significantly reduces the amount of epoxy resin used while ensuring insulation requirements, thereby reducing production costs and enhancing market competitiveness through lower selling prices. At the same time, this structure improves the waterproofing of the busbar trunking and prevents conductor corrosion, while making it easier for conductor heat to be conducted to the side plates, avoiding the problems of heat accumulation and excessively high operating temperature. Furthermore, the installation of heat sinks on the side plates and the folded edges on the cover plate can significantly improve its heat dissipation performance, thereby further controlling the operating temperature of the busbar trunking. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 yes Figure 1 Enlarged view of a portion of point A in the middle. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the given embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0018] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0019] See details Figure 1-2As shown, this application discloses a busbar trunking system, including an aluminum alloy shell and multiple conductors 3 arranged side by side. The aluminum alloy shell includes two parallel side plates 1 and two cover plates 2 symmetrically fixed on the side plates 1. The two side plates 1 and the two cover plates 2 enclose a receiving cavity a. Preferably, the side plates 1 and the cover plates 2 are planar on the side facing the receiving cavity a. The conductors 3 are covered with an insulating layer 4. Specifically, to ensure the insulation between adjacent conductors 3 and minimize the minimum distance between adjacent conductors 3, in this embodiment, a polyvinyl chloride (PVC) film of sufficient thickness is preferably wrapped around the surface of the conductors 3 to form the insulating layer 4. It should be noted that, due to current production capacity limitations, our company mainly uses manual winding to process the insulating layer 4. Of course, with the increase in production capacity, the insulating layer 4 can be obtained by winding the PVC film using appropriate machines, thereby significantly increasing production capacity and meeting order demands. It should be noted that the PVC film in this embodiment can also be replaced by other insulating materials in the prior art, such as polyimide, polyethylene, polyvinylidene fluoride, polytetrafluoroethylene, etc. To fix the positions of the two side plates 1 and flexibly adjust their relative distance, multiple fasteners 7 are preferably included. These fasteners 7 are preferably arranged side-by-side and symmetrically to ensure more even force distribution on the side plates 1 and prevent skewing. The fasteners 7 are combinations of bolts and nuts. Bolt holes 13 are drilled in the side plates 1, bolts are inserted into the bolt holes 13, and tightening the nuts forces the two side plates 1 closer together. By controlling the degree of nut tightening, adjacent conductors 3 can be brought closer, touching, or pressed together. The specific state is adaptively adjusted according to insulation requirements, size specifications, etc., with the goal of minimizing the space of the accommodating cavity a while meeting design requirements. Furthermore, the accommodating cavity a is filled with insulating material 5. Specifically, the insulating material 5 is preferably epoxy resin, which is filled by potting. According to the design requirements, the flowability of epoxy resin can be used for natural flow potting. Of course, vacuuming or other methods can also be used to remove air bubbles in the epoxy resin, ensuring that the epoxy resin can fully fill all gaps. During the potting process, a region extending a predetermined length from the outside of the cavity a needs to be sealed to prevent the epoxy resin from flowing outward. By extending the predetermined length of the region for sealing, a liquid storage area will also be formed in the outer area of ​​the cavity a (similar to the function of a riser in the casting process). In this way, during the potting process, the epoxy resin in the liquid storage area will replenish the liquid in the cavity a, thereby ensuring that the cavity a has sufficient epoxy resin in one filling, forming a reliable potting, without the need for multiple fillings.

[0020] To facilitate the connection between the side plate 1 and the cover plate 2, in this embodiment, it is further preferred that the side plate 1 has connecting edges 12 extending vertically outward from its two edges along its length, and the connecting edges 12 are fitted and connected to the cover plate 2. Furthermore, it is preferred that the width of the cover plate 2 is greater than the maximum distance between the two side plates 1, and that folded edges 21 extend symmetrically from both edges of the cover plate 2. In this embodiment, the cover plate 2 is riveted to the connecting edges 12. Figure 1 and Figure 2 As shown, rivet holes can be pre-drilled on the cover plate 2 and the connecting edge 12, and rivets 6 can be inserted into the rivet holes and riveted to achieve a reliable connection between the cover plate 2 and the connecting edge 12. Of course, considering the need for flexible adjustment of the size of the accommodating cavity a during production to accommodate different conductor thicknesses and potting requirements, the rivet holes on the connecting edge 12 can be machined into oblong holes. This allows for adjustment of the side plate 1 within a certain range, preventing installation difficulties due to misaligned rivet holes. Furthermore, in this embodiment, it is preferable that the surface of the cover plate 2 facing away from the connecting edge 12 has continuous toothed grooves 22, such as... Figure 2 As shown, the toothed groove 22 is mainly located near the rivet hole. With the setting of the toothed groove 22, after the rivet 6 is riveted, the lower end face of the rivet 6 head is pressed against the toothed groove 22, which can prevent the rivet 6 from sliding relative to each other, thereby improving the stability and reliability of the connection.

[0021] Furthermore, considering the need to enhance the heat dissipation of the busbar trunking, in this embodiment, multiple heat dissipation strips 11 extend outward from the side of the accommodating cavity a on the side plate 1. Further, the extension direction of the folded edge 21 faces the direction of the side plate 1 and is perpendicular to the cover plate 2. By setting the fasteners 7, adjacent conductors 3 are brought close together, touching, or pressed tightly. Therefore, compared to the prior art, the path for heat conduction from the conductor 3 to the side plate 1 is shortened, and heat is more easily conducted to the side plate 1. By setting the heat dissipation strips 11 on the side plate 1 and the folded edge 21 on the cover plate connected to the side plate 1, the heat dissipation area of ​​the side plate 1 can be effectively increased, thereby quickly dissipating the heat from the conductor 3.

[0022] Furthermore, due to the fluidity of epoxy resin during the potting process, leakage may occur at the connection between the cover plate 2 and the side plate 1. In this embodiment, a groove 14 is preferably provided on the end face of the connecting edge 12 that contacts the cover plate 2. The leaked epoxy resin will remain in the groove 14, thereby solving this problem.

[0023] The specific assembly sequence is as follows: First, wrap the surface of conductor 3 with a polyvinyl chloride film. Place the required number of conductors 3 side by side between the two side plates 1. After inserting the bolts of fasteners 7 into the bolt holes 13, apply appropriate tightening force to the fasteners 7. It should be noted that the tightening force of each fastener 7 should be consistent. Then, connect the cover plate 2 to the connecting edge 12 with rivets 6. After sealing in a suitable position, inject epoxy resin into the accommodating cavity a. After the epoxy resin cures, a busbar trunking that meets the requirements is obtained. The busbar trunking obtained in this way significantly reduces the amount of epoxy resin used while ensuring insulation requirements, thereby reducing production costs and improving market competitiveness through lower selling prices. At the same time, this structure improves the waterproofness of the busbar trunking and prevents conductor corrosion, while making it easier for conductor heat to be conducted to the side plates 1, avoiding the problems of heat accumulation and excessively high operating temperature. Furthermore, the installation of heat sinks 11 on the side plates 1 and the folded edges 21 on the cover plate 2 can significantly improve its heat dissipation performance, thereby further controlling the operating temperature of the busbar trunking.

[0024] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A busbar trunk comprising an outer casing of aluminium alloy and a plurality of conductors (3) arranged side by side, characterised in that: The aluminum alloy shell includes two parallel side plates (1) and two cover plates (2) symmetrically fixed on the side plates (1); the two side plates (1) and the two cover plates (2) enclose a receiving cavity a; the conductor (3) is covered with an insulating layer (4); it also includes a plurality of fasteners (7), which force the two side plates (1) to move closer to each other so that the adjacent conductors (3) are close to each other, close together or pressed tightly; the receiving cavity a is filled with insulating material (5).

2. The busway of claim 1, wherein: The fasteners (7) are arranged side by side and symmetrically.

3. The busway of claim 1, wherein: The side plate (1) has connecting edges (12) extending vertically outward from its two edges along its length direction. The connecting edges (12) are attached to and connected to the cover plate (2).

4. The busway of claim 1, wherein: Multiple heat dissipation strips (11) extend outward from the side of the accommodating cavity a.

5. The busway of claim 1, wherein: The width of the cover plate (2) is greater than the maximum distance between the two side plates (1), and folded edges (21) extend symmetrically at the two edges of the cover plate (2).

6. The busway of claim 5, wherein: The extension direction of the folded edge (21) is toward the direction of the side plate (1) and is perpendicular to the cover plate (2).

7. The busway of claim 3, wherein: A groove (14) is provided on the end face of the connecting edge (12) that contacts the cover plate (2).

8. The busway of claim 7, wherein: The cover plate (2) is riveted to the connecting edge (12).

9. The busway of claim 8, wherein: The cover plate (2) has a continuous toothed groove (22) on the surface opposite to the connecting edge (12).

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