A shell-keeping integrated bus duct with equipotential connection

Abstract

The utility model discloses a kind of shell protection integrated bus duct with equipotential connection, for the equipotential protection of adjoining bus duct, including first bus duct, second bus duct and bus duct connector, two adjacent first bus duct and second bus duct between joint busbar are locked connection by bus duct connector;At least one ground connection is connected on the top side cover plate of first bus duct or and second bus duct, and the equipotential terminal for the ground safety of busbar power transmission loop between all adjacent bus ducts;At least one ground cable line for preventing current overload is connected on the equipotential terminal;Effectively increase the leakage current flow of shell and the safety of busbar power transmission loop ground, reduce the probability of single-phase ground leakage, effectively improve the efficiency of ground protection.

Description

[Technical Field]

[0001] This utility model relates to power transmission connection technology, and more particularly to a housing-protected integrated busbar trunking with equipotential bonding. [Background Technology]

[0002] Busbar trunking is a device used to distribute electricity. It is commonly used for power transmission within buildings and has become an indispensable wiring method in electrical equipment and power systems in modern high-rise buildings, factories, and other buildings. Using busbar trunking makes the installation and maintenance of power distribution systems more convenient and faster, greatly improves work efficiency, and effectively enhances the safety factor of building electricity use.

[0003] However, in existing power systems, the main cause of electrical fires is single-phase grounding leakage in power supply and distribution lines. This leakage current cannot expand quickly enough to trigger the upstream protection device to cut off the power supply, leading to a discharge spark at the leakage point and causing an electrical fire. To address this issue, existing busbar trunking or connectors ground their metal casings. However, in practice, the connection is often unreliable, and insufficient current flow prevents timely discharge of leakage current, still posing a risk of electric shock and electrical fire. Furthermore, the large difference in grounding resistance at both ends of long-distance busbar trunking creates a dangerous potential difference between the metal supports; and direct connection to different grounding systems (such as lightning protection grounding and functional grounding) creates ground loop currents.

[0004] Therefore, the efficiency of the grounding protection system directly affects electrical fires and personal safety. The corresponding equipotential bonding is to ensure that the potential between different metal components is the same, preventing electric shock and electromagnetic interference. Most existing power distribution lines rely on the PE line for grounding leakage. The PE line forms an integrated grounding protection system with the total equipotential bonding, local equipotential bonding, and auxiliary equipotential bonding. However, the PE line in existing projects is mostly useless. In particular, due to the surface treatment of the metal shell of the busbar trunking, such as anodizing, electrostatic spraying, etc., the insulation resistance of these surface treatments exceeds 200 megohms. Therefore, the fault current can only be transmitted to the PE line at the connection of the busbar trunking. Whether it is possible to ensure that the conductivity of the connection is more than 50% has become a technical problem, and it is generally not achievable in engineering applications. [Utility Model Content]

[0005] This utility model provides a busbar trunking with an integrated shell and protection system that has equipotential bonding. It has a simple structure, is easy to install and disassemble, effectively increases the leakage current overcurrent of the shell and the safety of the grounding of the busbar transmission circuit, reduces the probability of single-phase ground leakage, and effectively improves the efficiency of grounding protection.

[0006] The technical solution adopted in this utility model is:

[0007] An integrated busbar trunking with equipotential bonding for equipotential protection of adjacent busbar trunking includes a first busbar trunking, a second busbar trunking, and a busbar trunking connector. The joint busbars between two adjacent mating first busbar trunkings and second busbar trunkings are locked together by the busbar trunking connector.

[0008] At least one grounding connection is connected to the top cover plate of the first busbar trunking or the second busbar trunking, which is an equipotential bonding terminal for grounding safety of the busbar transmission circuit between all adjacent busbar trunkings;

[0009] At least one grounding cable is connected to the equipotential bonding terminal to prevent current overload.

[0010] Preferably, at least three evenly distributed equipotential bonding terminals are provided on the top side cover plates of the first busbar trunking and the second busbar trunking, respectively, for grounding connection with reinforcing bars, or steel structures, or sewage pipes, or water pipes, or heating pipes.

[0011] Preferably, the equipotential bonding terminal is in the shape of an "I"-shaped terminal, or a "T"-shaped terminal, or a "Y"-shaped terminal, with its bottom surface attached to the top surface of the top cover plate of the first busbar trough or the second busbar trough.

[0012] Preferably, the bottom surfaces of the "I"-shaped terminal block, the "T"-shaped terminal block, and the "Y"-shaped terminal block are all recessed and have grooves that fit into the top surface of the top side cover plate of the first busbar groove or the second busbar groove.

[0013] Preferably, the top sides of the "I"-shaped terminal block and the "Y"-shaped terminal block are connected to six evenly distributed grounding cables for preventing current overload.

[0014] Preferably, the top side of the "T"-shaped terminal block is connected to three evenly distributed grounding cables for preventing current overload.

[0015] The beneficial effects of this utility model are:

[0016] This invention addresses the risks of electric shock and electrical fires caused by insecure connections and insufficient current flow in busbar trunking connections, which can lead to leakage current not being discharged in time. To address these risks, the invention adds grounding protection to the busbar trunking by installing multiple equipotential bonding terminals on the top side of the trunking. These terminals are connected to the reinforcing bars, steel structure, sewage pipes, water pipes, or heating pipes for grounding, thereby increasing the grounding safety of the busbar transmission circuit. The increased current-carrying area of ​​the casing enhances the leakage current flow rate, ensuring timely discharge of leakage current to the ground wire and reducing the probability of single-phase grounding leakage, thus making the power supply busbar trunking system safer. [Attached Image Description]

[0017] Figure 1 This is an exploded structural diagram of an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A magnified structural diagram of part A in the diagram;

[0019] Figure 3 This is a front-view perspective structural diagram of an embodiment of the present utility model;

[0020] Figure 4 This is a rear-view perspective structural diagram of an embodiment of the present utility model.

Detailed Implementation Methods

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. 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 scope of protection of the present utility model. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] A type of integrated busbar trunking with equipotential bonding, such as Figures 1 to 4 As shown, the equipotential protection for adjacent busbar trunking includes a first busbar trunking 1, a second busbar trunking 2, and a busbar trunking connector 3. The joint busbars between two adjacent first busbar trunking 1 and second busbar trunking 2 are locked together by the busbar trunking connector 3. Three evenly spaced grounding connections are connected to the top cover plate of the second busbar trunking 2. These are equipotential terminals used for grounding safety of the busbar transmission circuit between all adjacent busbar trunkings. Each equipotential terminal is connected to 3 or 6 grounding cables to prevent current overload. The equipotential terminals are used to connect to the grounding of reinforcing bars, steel structures, sewage pipes, water pipes, or heating pipes, respectively.

[0024] Continue as Figures 1 to 4As shown, the equipotential bonding terminals are shaped as "I"-shaped terminals 4, "T"-shaped terminals 5, and "Y"-shaped terminals 6, with their bottom surfaces attached to the top surface of the top side cover plate of the second busbar trough 2. The bottom surfaces of the "I"-shaped terminals 4, "T"-shaped terminals 5, and "Y"-shaped terminals 6 are all recessed and have grooves 7 that fit into the top surface of the top side cover plate of the second busbar trough 2. The four feet of the "I"-shaped terminals 4, "T"-shaped terminals 5, and "Y"-shaped terminals 6 are respectively locked and fixed by self-locking bolts 9 with spring washers. Among them, the top sides of the "I"-shaped terminal 4 and the "Y"-shaped terminal 6 are connected to six evenly distributed grounding cables (not shown in the figure) for preventing current overload. The top side of the "T"-shaped terminal 5 is connected to three evenly distributed grounding cables 8 for preventing current overload. The grounding cables 8 and the connection holes on the top side of the "T"-shaped terminal 5 are also locked and fixed by self-locking bolts 9 with spring washers.

[0025] In this embodiment, grounding protection is added to the busbar trunking. Three equipotential bonding terminals are respectively installed on the top side of the busbar trunking and connected to the reinforcing bars, steel structure, sewage pipe, water pipe, or heating pipe for grounding connection. This is used to increase the grounding safety of the busbar transmission circuit. Depending on the connection method, "I"-shaped terminals 4, "T"-shaped terminals 5, and "Y"-shaped terminals 6 are respectively provided. Each equipotential bonding terminal is equipped with 3 or 6 grounding cables to prevent current overload. This increases the current-carrying area of ​​the busbar trunking shell to improve the leakage current flow rate, ensuring that the leakage current can be discharged to the ground wire in time, reducing the probability of single-phase ground leakage, and preventing the risk of electric shock and electrical fire caused by loose connections or insufficient flow rate in the busbar trunking connection. This makes the power supply busbar trunking system safer and more reliable.

[0026] In the description of this utility model, it should be noted that the terms "top", "bottom", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are 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.

[0027] 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 housing-integrated busbar trunking with equipotential bonding for equipotential protection of adjacent busbar trunking, characterized in that, It includes a first busbar, a second busbar, and a busbar connector. The joint busbars between two adjacent mating first busbars and second busbars are locked together by the busbar connector. At least one grounding connection is connected to the top cover plate of the first busbar trunking or the second busbar trunking, which is an equipotential bonding terminal for grounding safety of the busbar transmission circuit between all adjacent busbar trunkings; At least one grounding cable is connected to the equipotential bonding terminal to prevent current overload.

2. The integrated busbar trunking with equipotential bonding according to claim 1, characterized in that: The top cover plates of the first busbar trunking and the second busbar trunking are respectively provided with at least three evenly distributed equipotential bonding terminals for grounding connection to the reinforcing bars, or steel structures, or sewage pipes, or water pipes, or heating pipes.

3. A housing-protected integrated busbar trunking with equipotential bonding according to claim 2, characterized in that: The equipotential bonding terminal is in the shape of an "I" shaped terminal, or a "T" shaped terminal, or a "Y" shaped terminal, with its bottom surface attached to the top surface of the top cover plate of the first busbar trough or the second busbar trough.

4. A housing-protected integrated busbar trunking with equipotential bonding according to claim 3, characterized in that: The bottom surfaces of the "I"-shaped terminal block, the "T"-shaped terminal block, and the "Y"-shaped terminal block are all recessed and have grooves that fit into the top surface of the top cover plate of the first busbar groove or the second busbar groove.

5. A housing-protected integrated busbar trunking with equipotential bonding according to claim 3, characterized in that: The top sides of the "I"-shaped terminal block and the "Y"-shaped terminal block are connected to six evenly distributed grounding cables to prevent current overload.

6. A housing-protected integrated busbar trunking with equipotential bonding according to claim 3, characterized in that: The top side of the "T"-shaped terminal block is connected to three evenly distributed grounding cables to prevent current overload.

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