Flexible busbar

Abstract

The utility model discloses a kind of flexible bus, for long-distance flexible laying installation, including flexible metal row conductor, insulating layer, metal armoring protective layer and protective layer;The flexible metal row conductor is flat sheet-like belt structure;The insulating layer is wrapped on the outer wall surface of the flexible metal row conductor along the length direction circumferential ring shape;The metal armoring protective layer is wrapped on the outer wall surface of the insulating layer along the length direction circumferential ring shape;The protective layer is wrapped on the outer circumferential wall of the metal armoring protective layer along the length direction circumferential ring shape;Flexible laying mode is used when construction long-distance connection, effectively reduce the joint of butt joint, reduce installation difficulty, improve the convenience and reliability of installation.

Description

Technical Field

[0001] This utility model relates to the field of busbar installation technology, and in particular to a flexible busbar. Background Technology

[0002] In current technology, power transmission trunk lines generally use cables or busbars. Cables are widely used because they are flexible, can be coiled, and can be manufactured in long lengths. However, for high-current power transmission, due to the high construction difficulty, poor heat dissipation of round cables, and high cost, most cables are limited to 240 square millimeters or less. Multi-span cables are generally not used due to high risk, and the significant reduction in heat dissipation and current carrying capacity when laid in enclosed cable trays. Tray-type, wire-type, and mesh-type cable trays are also aesthetically unappealing when viewed from below.

[0003] Therefore, relevant standards clearly stipulate that busbar trunking should be used for 400A and above. Thus, busbar trunking is an indispensable part of modern buildings, often suspended under the ceiling. Most busbar trunking uses a rigid structure made of hard copper, which is not easy to bend, making it prone to stress concentration and fatigue fracture, causing many inconveniences for busbar laying and wiring. At the same time, due to transportation and the influence of the installation space within the building, each section of busbar trunking cannot be very long and needs to be custom-made on-site according to the actual site conditions, resulting in a long processing time for busbar trunking.

[0004] Furthermore, in existing technologies, the longest single busbar section does not exceed 6 meters. Connectors are required between sections to meet engineering requirements. According to current project statistics, over 80% of busbar accidents occur at the connection points, causing significant losses to the project. This is because, at the connection point, if the axes of the two busbar sections are not strictly aligned, or if the bolt holes of the busbars and insulation plates are not fully aligned, the insulation sleeves will be damaged by shear force when tightening the bolts, leading to a decrease in insulation performance.

[0005] Therefore, there is an urgent need to optimize the existing busbar structure in order to effectively reduce the installation difficulty of the busbar and improve the reliability of the connection. Utility Model Content

[0006] This utility model provides a flexible busbar, which facilitates long-distance connections using a flexible laying method during construction, effectively reducing the number of joints, lowering installation difficulty, and improving the convenience and reliability of installation.

[0007] The technical solution adopted by this utility model to solve its technical problem is: A flexible busbar for long-distance flexible installation includes a flexible metal busbar conductor, an insulation layer, a metal armor protective layer, and a protective layer. The flexible metal busbar conductor has a flat, thin, strip-like structure; The insulating layer is circumferentially wrapped around the outer wall of the flexible metal bus conductor along its length. The metal armor protective layer is circumferentially wrapped around the outer wall of the insulating layer along its length; The protective layer is circumferentially wrapped around the outer peripheral wall of the metal armor protective layer along its length.

[0008] Preferably, a shielding layer is further provided between the metal armor protective layer and the protective layer. This shielding layer is made of aluminum foil or epoxy resin composite material and has a thickness of 1.0 mm to 4 mm. It is circumferentially wrapped around the metal armor protective layer along its length and is used to shield internal electrical signal leakage.

[0009] Preferably, the flexible metal bus conductor is a flat, thin strip-shaped structure integrally formed from copper alloy, aluminum alloy, or copper-aluminum alloy conductors, or a flat strip-shaped structure with staggered and recessed sides on both sides of the cross-section.

[0010] Preferably, the flexible metal busbar conductor is a flat strip aluminum busbar integrally formed from 3.0 mm thick aluminum alloy material.

[0011] Preferably, the insulating layer is made of silicone rubber with a thickness of 1.0 mm to 2.5 mm.

[0012] Preferably, the protective layer is made of PVC or TPE material with a thickness of 0.5mm to 1.5mm.

[0013] Preferably, the metal armor protective layer is formed by an interlocking armoring machine using a non-magnetic steel strip or aluminum alloy strip with a thickness of 0.8mm to 1.0mm and a width of 8mm to 13mm, wrapped with a metal sheath layer.

[0014] The beneficial effects of this utility model are: To address the issues of existing methods that use busbar trunking to fix busbars, which result in the busbars being difficult to bend, inconvenient installation and wiring, and reduced reliability and service life, this embodiment features a busbar with good flexibility and light weight. It can achieve multi-angle torsion bending, curling and bending, effectively reducing the number of joints. This allows for the parallel arrangement of multiple flexible busbars in the installation and fixing structure, effectively reducing installation difficulty and improving installation convenience and reliability.

[0015] Meanwhile, the flexible busbar, with its easy bending in the thickness direction and high rigidity in the width direction, can be bent into any spatial configuration by hand or with simple tools during assembly, facilitating busbar installation and wiring. It can adapt to complex wiring environments, is easy to construct and install, effectively reducing the difficulty of assembling and installing existing busbars, improving on-site construction efficiency, reducing weight, and saving layout space. Moreover, compared with traditional hard copper busbars, its conductivity is significantly improved and its current carrying capacity is greater, solving the problem of difficult installation of traditional hard copper busbars, greatly shortening the construction period, saving costs, and having good fire resistance, which can improve the service life of the busbar in fire environments. At the same time, it has good heat resistance and insulation properties, effectively avoiding safety hazards at the joints, effectively improving the working life and stability under long-term high temperature, meeting the power system's requirements for safety, reliability and efficiency, improving the power system's safety performance, and reducing fire accidents caused by electrical equipment failures.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention; Figure 2 This is an enlarged schematic diagram of the cross-sectional structure of the flexible metal busbar conductor in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model; Figure 4 This is an enlarged schematic diagram of the cross-sectional structure of the flexible metal busbar conductor in Embodiment 2 of this utility model. 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] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Terms such as "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer" 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 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.

[0020] Furthermore, in the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" 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; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be reasonably determined in conjunction with the specific content of the technical solution.

[0021] Example 1 A flexible busbar, such as Figure 1 As shown, for long-distance flexible laying and installation, it includes a flexible metal bus conductor 1, an insulation layer 2, a metal armor protective layer 3, and a protective layer 4; the flexible metal bus conductor 1 is a flat, thin strip structure; the insulation layer 2 is circumferentially wrapped around the outer wall of the flexible metal bus conductor 1 along the length direction; the metal armor protective layer 3 is circumferentially wrapped around the outer wall of the insulation layer 2 along the length direction; and the protective layer 4 is circumferentially wrapped around the outer wall of the metal armor protective layer 3 along the length direction.

[0022] In this embodiment, such as Figure 2 As shown, the flexible metal bus conductor 1 is a flat strip structure with staggered recesses on both sides of the cross-section, integrally formed from a 3.0 mm thick flat strip aluminum alloy conductor, which is particularly suitable for low-voltage current transmission. The insulation layer 2 is made of 1.5 mm thick silicone rubber, the protective layer 4 is made of 1 mm thick PVC or TPE material, and the metal armor protective layer 3 is an aluminum alloy strip. The aluminum alloy strip is interlocked by corrugation and then axially wrapped around the insulation layer 2. The aluminum alloy strip has a thickness of 0.8 mm and a width of 8 mm to 13 mm.

[0023] Example 2 like Figure 3As shown, the difference between this embodiment and Embodiment 1 is that a shielding layer 5, made of aluminum foil or epoxy resin composite material with a thickness of 1.0 mm to 4 mm, is provided between the metal armor protective layer 3 and the protective layer 4. This shielding layer 5 is circumferentially wrapped around the metal armor protective layer 3 along its length, effectively shielding internal electrical signal leakage.

[0024] In this embodiment, such as Figure 4 As shown, the flexible metal busbar conductor is a flat, strip-shaped structure integrally formed from aluminum alloy conductors, which is particularly suitable for the transmission of medium and high voltage currents.

[0025] In the above embodiments, the flexible busbar can be easily bent in the thickness direction and has high rigidity in the width direction. During assembly, it can be bent into any spatial configuration by hand or with simple tools, facilitating busbar installation and wiring. It can adapt to complex wiring environments, is easy to construct and install, effectively reduces the difficulty of assembling and installing existing busbars, and improves on-site construction efficiency. Moreover, it reduces weight and saves layout space. Compared with traditional rigid copper busbars, it significantly improves conductivity and has a larger current carrying capacity, solving the problem of difficult installation of traditional rigid copper busbars, greatly shortening the construction period and saving costs.

[0026] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. All equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A flexible busbar for long-distance flexible installation, characterized in that, Includes flexible metal busbar conductor, insulation layer, metal armor protective layer and protective layer; The flexible metal busbar conductor has a flat, thin, strip-like structure; The insulating layer is circumferentially wrapped around the outer wall of the flexible metal bus conductor along its length. The metal armor protective layer is circumferentially wrapped around the outer wall of the insulating layer along its length; The protective layer is circumferentially wrapped around the outer peripheral wall of the metal armor protective layer along its length.

2. A flexible busbar according to claim 1, characterized in that: Between the metal armor protective layer and the protective layer, there is also a strip made of aluminum foil or epoxy resin composite material with a thickness of 1.0 mm to 4 mm, which is circumferentially wrapped around the outside of the metal armor protective layer along the length direction to shield against internal electrical signal leakage.

3. A flexible busbar according to claim 1, characterized in that: The flexible metal busbar conductor is a flat, thin strip-shaped copper alloy, aluminum alloy, or copper-aluminum alloy conductor integrally formed into a flat strip structure or a flat strip structure with staggered and recessed sides on both sides of the cross section.

4. A flexible busbar according to claim 1, characterized in that: The flexible metal busbar conductor is a flat strip aluminum busbar integrally formed from 3.0 mm thick aluminum alloy material.

5. A flexible busbar according to claim 1, characterized in that: The insulating layer is made of silicone rubber with a thickness of 1.0 mm to 2.5 mm.

6. A flexible busbar according to claim 1, characterized in that: The protective layer is made of PVC or TPE material with a thickness of 0.5mm to 1.5mm.

7. A flexible busbar according to claim 1, characterized in that: The metal armor protective layer is made by an interlocking armoring machine using a non-magnetic steel strip or aluminum alloy strip with a thickness of 0.8mm to 1.0mm and a width of 8mm to 13mm, wrapped with a metal sheath layer.

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