High-rise building pre-branch flexible bus

Abstract

The utility model belongs to the technical field of power transmission cable, disclose a kind of high-rise building pre-branch flexible bus, including main cable, branch cable, C type clamp connecting piece, branch junction box and fixed clamp;The main cable is equipped with multiple branch points along length direction;The first conductor in the main cable is electrically connected at branch point with the end of the second conductor in the branch cable;The outer peripheral wall of the first conductor of the branch point of the main cable is arranged with the end of the second conductor wrapped by the C type clamp connecting piece;The end of the branch point and branch cable is arranged with the branch junction box wrapped;The fixed clamp is arranged on wall surface, for fixing main cable and branch cable.The utility model's technical scheme is easy to lay installation, solve the problem of traditional hard copper row busbar installation difficult, greatly reduce the construction period, save cost, and good fireproof performance.

Description

Technical Field

[0001] This utility model belongs to the field of power transmission cable technology, and specifically relates to a pre-branched flexible busbar for high-rise buildings. Background Technology

[0002] Pre-branched cables are cables in which branch lines are prefabricated in the factory according to the user's design drawings during the production of the main cable. They are a relatively new technology product in recent years. The branch lines are prefabricated on the main cable in the factory, and the cross-sectional size and length of the branch lines are determined according to the design requirements. This greatly shortens the construction cycle, significantly reduces material and construction costs, and ensures greater reliability of power distribution.

[0003] With the acceleration of urbanization, high-rise buildings, as an important component of modern cities, face multiple challenges, including energy consumption, environmental protection, and safety, while providing residential and commercial spaces. The electrical systems of high-rise buildings, as their lifeline, must not only meet daily electricity needs but also play a positive role in environmental protection and energy efficiency. Against this backdrop, pre-branched flexible busbars have gradually emerged as an innovative solution in the electrical design of high-rise buildings.

[0004] Most pre-branched cables currently use rigid pre-branched busbars, which have the following disadvantages: Limited flexibility: Due to its rigid structure, rigid pre-branched busbars are difficult to bend and deform during installation, placing high demands on installation space and routing. In complex building structures or when wiring needs to be done in confined spaces, installation difficulties may arise, and it may even be impossible to lay the cable along the ideal path. Installation is challenging: Its weight and rigidity necessitate specialized hoisting equipment and tools, as well as significant manpower. Furthermore, it demands a high level of skill and experience from the installers, and errors during installation can lead to difficult adjustments later. Limited seismic performance: During natural disasters such as earthquakes, rigid pre-branched busbars, due to their rigidity, cannot adapt well to the shaking and deformation of buildings, and are prone to loosening of connection parts, busbar breakage, etc., which can lead to electrical system failures and affect the stability and safety of power supply.

[0005] Inconvenient maintenance and repair: Since rigid pre-branched busbars are usually installed in fixed positions and are difficult to move or dismantle, maintenance and repair require a certain degree of dismantling or relocation of the surrounding building structure or other equipment in order to inspect, repair or replace parts of the busbar. This increases the workload and difficulty of maintenance and repair and will also affect the normal operation time of the power system.

[0006] To address this, we propose a pre-branched flexible busbar for high-rise buildings. This environmentally friendly pre-branched flexible busbar has excellent connectivity with intelligent devices, enabling more refined power management, improving the building's intelligence level, and promoting technological progress in the construction industry. Utility Model Content

[0007] The main purpose of this utility model is to propose a pre-branched flexible busbar for high-rise buildings, which aims to solve the technical problems of existing rigid pre-branched busbars, such as poor flexibility, difficulty in installation, limited seismic performance, and inconvenience in maintenance and repair.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A pre-branched flexible busbar for high-rise buildings includes a main cable, branch cables, C-clamp connectors, branch junction boxes, and fixing clamps. The main cable has multiple branch points along its length; the first conductor in the main cable is electrically connected to the end of the second conductor in the branch cable at the branch point; the C-clamp connector is provided to wrap the end of the second conductor and the outer peripheral wall of the first conductor at the branch point of the main cable; the branch junction box is provided to wrap the branch point and the end of the branch cable; the fixing clamp is provided on the wall for fixing the main cable and the branch cable.

[0009] Furthermore, the main cable includes, from the inside out, a first conductor, a semi-conductive conductor shielding wrapping layer, a first insulation layer, a semi-conductive conductor shielding wrapping layer, a metal sheath layer, a water-blocking and insulating inner lining layer, a steel wire interlocking armor layer, and a first outer sheath.

[0010] Furthermore, the branch cable includes, from the inside out, a second conductor, a semi-conductive conductor shielding wrapping layer, a second insulation layer, another semi-conductive conductor shielding wrapping layer, a non-woven fabric inner lining layer, a steel tape interlocking armor layer, and a second outer sheath.

[0011] Furthermore, the cross-sections of both the main cable and the branch cable are either circular or elliptical.

[0012] Furthermore, both the first conductor and the second conductor are conductors formed by stranding multiple soft copper wires or conductors formed by stacking multiple flexible copper wires.

[0013] Furthermore, the flexible copper wire bar includes multiple soft copper wires, and a flexible connecting copper sheet is provided between two adjacent soft copper wires.

[0014] Furthermore, the fixing clamp includes a bottom shell, a top cover, and fastening screws; the top cover is detachably mounted on the upper end of the bottom shell, and the upper end of the bottom shell and the lower end of the top cover are respectively provided with a first clamping opening and a second clamping opening, and the two ends of the bottom shell and the top cover are respectively provided with a first screw hole and a second screw hole, and the fastening screws are respectively passed through the second screw hole and the first screw hole and threaded to the wall surface, and the inner peripheral walls of the first clamping opening and the second clamping opening abut against the outer peripheral wall of the main cable or the branch cable.

[0015] Furthermore, the C-type clamp connector is a connector made of copper.

[0016] Furthermore, both the first and second insulating layers are elastomeric insulating layers made of cross-linked polyethylene, polyvinyl chloride, butyl rubber, or thermoplastic elastomer.

[0017] Furthermore, both the first outer sheath and the second outer sheath are made of polyvinyl chloride, polyethylene, or neoprene rubber.

[0018] Furthermore, the metal sheath layer is made of copper or aluminum.

[0019] Furthermore, the semiconducting conductor shielding wrapping layer is a wrapping layer made of polyester or polypropylene.

[0020] Furthermore, the outer peripheral wall of the branch junction box is covered with an insulating protective sleeve.

[0021] Furthermore, both the outer peripheral walls of the first conductor and the second conductor are provided with a tin plating layer.

[0022] Furthermore, a limiting groove is provided at each end of the bottom shell, and a limiting plate is provided at each end of the top cover, with the limiting plates respectively embedded in the limiting groove.

[0023] Furthermore, it also includes a U-shaped hanging ring, which is installed on the ceiling. The upper end of the main cable is provided with a hanging device, and the U-shaped hanging ring and the hanging device are detachably and fixedly connected.

[0024] The technical solution of this utility model has the following beneficial effects: The pre-branched flexible busbar of this invention has a more stable and compact structure, as well as good flexibility, allowing for flexible bending and deformation to adapt to different installation environments and space requirements. Compared to traditional rigid busbars, the technical solution of this invention is easier to construct and install, solving the problem of difficult installation of traditional hard copper busbars, greatly reducing construction time, saving costs, and providing good fire resistance. Simultaneously, the structural design of the pre-branched flexible busbar helps optimize the electric field distribution, reducing corona discharge and other phenomena, further improving the stability and reliability of power transmission. The pre-branched flexible busbar can be equipped with multiple branch points according to actual needs, facilitating the supply of power to different electrical equipment or loads. This flexible branch configuration reduces the amount of cable used and the amount of laying work, lowering installation costs and space occupation. Installation is convenient: due to the flexibility and adaptable branch configuration of the pre-branched flexible busbar, its installation process is relatively simple and quick. It can be directly laid or suspended on the building structure without the need for complex cable trays or piping systems. Moreover, pre-branched flexible busbars are lightweight, easy to transport and install, which can greatly shorten the installation cycle and reduce installation costs. They also have multiple branch points so that they can be quickly and conveniently connected when expanding or adding electrical equipment in the future, making them highly practical. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is an installation diagram of a pre-branched flexible busbar for a high-rise building according to an embodiment of the present invention. Figure 2 This is a partial cross-sectional view of a pre-branched flexible busbar for a high-rise building according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of a pre-branched flexible busbar for a high-rise building according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of a fixing clip for a pre-branched flexible busbar in a high-rise building according to an embodiment of the present invention. Figure 5 This is an exploded structural diagram of a fixing clip for a pre-branched flexible busbar in a high-rise building, according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the structure of a flexible copper wire busbar for a pre-branched flexible busbar in a high-rise building, according to an embodiment of the present invention. Figure 7This is a cross-sectional schematic diagram of the main cable of a pre-branched flexible busbar for a high-rise building, according to an embodiment of the present invention. Figure 8 This is a cross-sectional schematic diagram of a branch cable of a pre-branched flexible busbar for high-rise buildings, according to an embodiment of the present invention. Among them, the main cable is 100, the branch cable is 200, the C-type clamp connector is 300, the branch junction box is 400, the fixing clamp is 500, the flexible copper wire busbar is 600, and the U-shaped lifting ring is 700. First conductor-101, semiconducting conductor shielding wrapping layer-102, first insulation layer-103, metal sheath layer-104, water-blocking isolation inner lining layer-105, steel wire interlocking armor layer-106, first outer sheath-107, branch point-109, hanging device-110, second conductor-201, second insulation layer-202, non-woven fabric inner lining layer-203, steel strip interlocking armor layer-204, second outer sheath-205, bottom shell-501, top cover-502, first clamping port-5011, second clamping port-5021, first screw hole-5012, second screw hole-5022, limiting groove-5013, limiting plate-5023; soft copper wire-601, flexible connecting copper sheet-602.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] 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.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This utility model proposes a pre-branched flexible busbar for high-rise buildings.

[0032] like Figures 1 to 8 As shown in one embodiment of this utility model, a pre-branched flexible busbar for high-rise buildings includes a main cable 100, branch cables 200, C-clamp connectors 300, branch junction boxes 400, and fixing clips 500. The main cable 100 has multiple branch points 109 along its length. The first conductor 101 in the main cable 100 is electrically connected to the end of the second conductor 201 in the branch cable 200 at the branch point 109. The C-clamp connector 300 is disposed on the outer peripheral wall of the first conductor 101 at the branch point 109 of the main cable 100, covering the end of the second conductor 201. The branch junction box 400 is disposed on the branch point 109 and the end of the branch cable 200. The fixing clips 500 are disposed on the wall and used to fix the main cable 100 and the branch cable 200.

[0033] Specifically, the main cable 100 includes, from the inside out, a first conductor 101, a semi-conductive conductor shielding wrapping layer 102, a first insulation layer 103, a semi-conductive conductor shielding wrapping layer 102, a metal sheath layer 104, a water-blocking and insulating inner lining layer 105, a steel wire interlocking armor layer 106, and a first outer sheath 107.

[0034] Specifically, the branch cable 200 includes, from the inside out, a second conductor 201, a semi-conductive conductor shielding wrapping layer 102, a second insulation layer 202, a semi-conductive conductor shielding wrapping layer 102, a non-woven fabric inner lining layer 203, a steel tape interlocking armor layer 204, and a second outer sheath 205.

[0035] Specifically, both the main cable 100 and the branch cable 200 have circular cross-sections, and both the first conductor 101 and the second conductor 201 are conductors formed by stranding multiple soft copper wires. Among them, the soft copper wires are T2 soft copper wires, that is, electrical copper with a purity of 99.95%.

[0036] Specifically, the fixing clamp 500 includes a bottom shell 501, an upper cover 502, and fastening screws; the upper cover 502 is detachably mounted on the upper end of the bottom shell 501. The upper end of the bottom shell 501 and the lower end of the upper cover 502 are respectively recessed with a first clamping opening 5011 and a second clamping opening 5021. The two ends of the bottom shell 501 and the upper cover 502 are respectively recessed with a first screw hole 5012 and a second screw hole 5022. The fastening screws are respectively passed through the second screw hole 5022 and the first screw hole 5012 and are threaded to the wall. The inner peripheral walls of the first clamping opening 5011 and the second clamping opening 5021 abut against the outer peripheral wall of the main cable 100 or the branch cable 200.

[0037] Specifically, the C-clamp connector 300 is a connector made of copper.

[0038] Specifically, the steel strip interlocking armor layer and the steel wire interlocking armor layer can enhance the mechanical strength of the main cable and the pre-branched cable, improve their resistance to external damage, and also have a certain electromagnetic shielding effect, making the structure of the main cable and the pre-branched cable more stable, compact, and flexible.

[0039] Specifically, both the first insulation layer 103 and the second insulation layer 202 are elastomeric insulation layers made of cross-linked polyethylene, polyvinyl chloride, butyl rubber, or thermoplastic elastomer. The first insulation layer 103 and the second insulation layer 202 give the main cable and the pre-branch cable good insulation performance, wear resistance, and aging resistance, effectively preventing electrical faults such as leakage and short circuits, making them safer and more reliable.

[0040] Specifically, both the first outer sheath 107 and the second outer sheath 205 are made of polyvinyl chloride, polyethylene, or neoprene rubber. The outer sheaths are used to protect the internal structure of the main cable and the pre-branch cable from the influence of the external environment, such as moisture, dust, and chemical corrosion, and can effectively prevent electrical faults such as leakage and short circuits, making them safer and more reliable.

[0041] Specifically, the metal sheath is made of copper or aluminum. The metal sheath enhances the mechanical strength of the busbar, improves its resistance to external damage, and also improves the electromagnetic shielding effect of the main cable and pre-supported cables, ensuring that the noise and electromagnetic radiation generated during operation remain within a safe level, thus maintaining a healthy and quiet environment inside and outside the building.

[0042] Specifically, the semiconducting conductor shielding wrapping layer 102 is a wrapping layer made of polyester or polypropylene. By wrapping the conductor, the semiconducting conductor shielding wrapping layer serves to insulate, isolate, and protect the conductor, while also helping to reduce electromagnetic interference.

[0043] Specifically, the outer periphery of the branch junction box 400 is covered with an insulating protective sleeve (not shown). This increases the insulation performance of the branch junction box, thereby improving the reliability and electrical stability of the flexible busbar and effectively preventing electrical faults such as leakage and short circuits.

[0044] Specifically, both the outer peripheral walls of the first conductor 101 and the second conductor 201 are provided with a tin-plated layer (not shown). This effectively improves corrosion resistance. Tin has good chemical stability, and the tin plating layer can isolate the copper conductor from the external air, moisture, and other corrosive substances, preventing oxidation and rust, thereby extending the service life of the busbar. The protective effect of the tin plating layer is particularly pronounced in humid or corrosive gas environments. It also enhances solderability: the tin plating layer improves the weldability of the conductor. During the production of the busbar, and in subsequent installation and maintenance, welding operations may be required. Tin has a relatively low melting point and good fluidity, making the welding process easier, ensuring the quality of the weld joint, improving welding reliability, and ensuring the stability of the electrical connection. Simultaneously, it reduces contact resistance. The tin plating layer makes the conductor surface smoother, reducing the roughness of the contact surface, thereby reducing contact resistance. When current flows through the busbar, lower contact resistance reduces energy loss, reduces heat generation, improves the conductivity and operating efficiency of the busbar, and also helps reduce safety hazards caused by excessive contact resistance.

[0045] Specifically, the bottom shell 501 has a limiting groove 5013 protruding from each end, and the top cover 502 has a limiting plate 5023 protruding from each end, with the limiting plates 5023 respectively embedded in the limiting grooves 5013. This provides a good limiting function, preventing the top cover from sliding left and right, and also facilitates the installation and fixing between the top cover and the bottom shell, improving installation efficiency.

[0046] Specifically, it also includes a U-shaped hanging ring 700, which is installed on the ceiling. The upper end of the main cable 100 is provided with a hanging device 110, and the U-shaped hanging ring 700 and the hanging device 110 are detachably and fixedly connected. When the pre-branched cable is installed vertically, it is used to suspend the main cable and bear the weight of the main cable.

[0047] In another embodiment of this utility model, both the main cable 100 and the branch cable 200 have elliptical cross-sections. The first conductor 101 and the second conductor 201 are both conductors formed by stacking multiple flexible copper wire bars 600. Each flexible copper wire bar 600 includes multiple soft copper wires 601, and a flexible connecting copper sheet 602 is provided between two adjacent soft copper wires 601. The soft copper wires are T2 soft copper wires, i.e., electrical copper with a purity of 99.95%.

[0048] The working principle and process of this utility model are as follows: This invention enables pre-branched flexible busbars to have a more stable and compact structure with good flexibility, allowing for flexible bending and deformation to adapt to different installation environments and space requirements. Compared to traditional rigid busbars, the technical solution of this invention is easier to construct and install, solving the problem of difficult installation of traditional hard copper busbars, greatly reducing construction time, saving costs, and providing good fire resistance. Simultaneously, the structural design of the pre-branched flexible busbar helps optimize the electric field distribution, reducing corona discharge and other phenomena, further improving the stability and reliability of power transmission. The pre-branched flexible busbar can be equipped with multiple branch points according to actual needs, facilitating power supply to different electrical equipment or loads. This flexible branch configuration reduces the amount of cable used and the workload of laying, lowering installation costs and space occupation. Installation is convenient: due to the flexibility and adaptable branch configuration of the pre-branched flexible busbar, its installation process is relatively simple and quick. It can be directly laid or suspended on the building structure without the need for complex cable trays or piping systems. Moreover, pre-branched flexible busbars are lightweight, making them easy to transport and install. This can significantly shorten the installation cycle, reduce installation costs, and allow for multiple branch points to be reserved for quick and convenient connection when expanding or adding electrical equipment in the future.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pre-branched flexible busbar for high-rise buildings, characterized in that: Includes main cable, branch cable, C-clamp connector, branch junction box, and fixing clamp; The main cable has multiple branch points along its length; the first conductor in the main cable is electrically connected to the end of the second conductor in the branch cable at the branch point; the C-clamp connector is provided to wrap the end of the second conductor and the outer peripheral wall of the first conductor at the branch point of the main cable; the branch junction box is provided to wrap the branch point and the end of the branch cable; the fixing clamp is provided on the wall for fixing the main cable and the branch cable.

2. The pre-branched flexible busbar for high-rise buildings according to claim 1, characterized in that: The main cable includes, from the inside out, a first conductor, a semi-conductive conductor shielding wrapping layer, a first insulation layer, a semi-conductive conductor shielding wrapping layer, a metal sheath layer, a water-blocking and insulating inner lining layer, a steel wire interlocking armor layer, and a first outer sheath. The branch cable includes, from the inside out, a second conductor, a semi-conductive conductor shielding wrapping layer, a second insulation layer, another semi-conductive conductor shielding wrapping layer, a non-woven fabric inner lining layer, a steel tape interlocking armor layer, and a second outer sheath.

3. The pre-branched flexible busbar for high-rise buildings according to claim 1 or 2, characterized in that: The cross-sections of the main cable and the branch cables are both circular or elliptical. Both the first conductor and the second conductor are conductors formed by twisting together multiple soft copper wires or conductors formed by stacking multiple flexible copper wires.

4. The pre-branched flexible busbar for high-rise buildings according to claim 3, characterized in that: The flexible copper wire bar includes multiple soft copper wires, and a flexible connecting copper sheet is provided between two adjacent soft copper wires.

5. The pre-branched flexible busbar for high-rise buildings according to claim 1, characterized in that: The fixing clamp includes a bottom shell, a top cover, and fastening screws; the top cover is detachably mounted on the upper end of the bottom shell, and the upper end of the bottom shell and the lower end of the top cover are respectively provided with a first clamping opening and a second clamping opening. The two ends of the bottom shell and the top cover are respectively provided with a first screw hole and a second screw hole. The fastening screws are respectively passed through the second screw hole and the first screw hole and are threaded to the wall. The inner peripheral walls of the first clamping opening and the second clamping opening abut against the outer peripheral wall of the main cable or the branch cable.

6. The pre-branched flexible busbar for high-rise buildings according to claim 1, characterized in that: The C-type clamp connector is made of copper.

7. The pre-branched flexible busbar for high-rise buildings according to claim 2, characterized in that: Both the first and second insulating layers are elastomeric insulating layers made of cross-linked polyethylene, polyvinyl chloride, butyl rubber, or thermoplastic elastomer. Both the first outer sheath and the second outer sheath are made of polyvinyl chloride, polyethylene, or neoprene rubber. The metal sheath layer is made of copper or aluminum. The semiconducting conductor shielding wrapping layer is a wrapping layer made of polyester or polypropylene.

8. The pre-branched flexible busbar for high-rise buildings according to claim 1, characterized in that: The outer peripheral wall of the branch junction box is covered with an insulating protective sleeve; The outer peripheral walls of both the first conductor and the second conductor are provided with a tin plating layer.

9. The pre-branched flexible busbar for high-rise buildings according to claim 5, characterized in that: The bottom shell has a limiting groove protruding from each end, and the top cover has a limiting plate protruding from each end, with the limiting plates respectively embedded in the limiting groove.

10. The pre-branched flexible busbar for high-rise buildings according to claim 1, characterized in that: The pre-branched flexible busbar for high-rise buildings also includes a U-shaped hanging ring, which is installed on the ceiling. The upper end of the main cable is provided with a hanging device, and the U-shaped hanging ring and the hanging device are detachably and fixedly connected.

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