A switchgear facilitating cable installation

Abstract

The utility model relates to the technical field of switch cabinet, concretely relates to a switch cabinet convenient to cable installation, include: wiring copper row including incoming line row, busbar and lower branch row, the incoming line row sets up in the top of switch cabinet body, and the one end of incoming line row is connected with busbar, and the other end of busbar is connected with lower branch row, busbar is relative to the inclined arrangement of switch cabinet body's horizontal reference line, and sets up in switch cabinet body along vertical direction, the first end of mutual inductor is connected with lower branch row, and the tail end of mutual inductor is connected with switch cabinet inside cable and connects the female row, the utility model forms the continuous electric energy path through the incoming line row, busbar and lower branch row, and the space in the cabinet is improved load current and optimized with the oblique line type vertical arrangement of busbar, and the big bending angle of lower branch row is greater than 90 DEG and is convenient for mutual inductor connection, and the tail end of mutual inductor and cable and connect female row and grounding switch conductive row integration arrangement, and the whole structure is compact, and the wiring is reasonable, and the installation maintenance is convenient, and promotes electric energy transmission reliability and construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinet technology, and specifically to a switch cabinet that facilitates cable installation. Background Technology

[0002] Switchgear, as a key complete set of equipment in a power system, integrates switching devices and their supporting control, measurement, protection, and regulation components, and includes related accessories, housings, support structures, and internal connections. Common specifications include 40.5KV and 12KV, categorized by voltage level. The installation method of the instrument transformer, a crucial component within the cabinet, significantly impacts equipment performance, user operation, and subsequent maintenance. In traditional layouts, the instrument transformer is fixed to the crossbeam at the back of the cabinet frame, located between the crossbeam and the grounding switch. This structure results in limited space after busbar installation. The instrument transformer's terminals are located between the grounding switch and the instrument transformer. When installing cable connections to the busbar, there is no working space on either side, requiring manual entry into the cable compartment, making the work difficult and inefficient. Furthermore, the low position of the cable connection busbar restricts operating space for subsequent cable installation and removal, causing significant inconvenience. Therefore, a busbar arrangement method that facilitates cable installation has become essential. Summary of the Invention

[0003] (I) Purpose of the Invention

[0004] The purpose of this invention is to provide a switchgear that facilitates cable installation. It forms a continuous power path through the incoming line bus, busbar, and lower branch. The busbar is arranged vertically in an oblique pattern to increase current carrying capacity and optimize the internal space of the cabinet. The lower branch has a bending angle of more than 90° to facilitate the connection of current transformers. The tail end of the current transformer is integrated with the cable busbar and the grounding switch conductive busbar. The overall structure is compact, the wiring is reasonable, the installation and maintenance are convenient, and the reliability of power transmission and construction efficiency are improved.

[0005] (II) Technical Solution

[0006] To address the above problems, the present invention provides a switch cabinet that facilitates cable installation, comprising:

[0007] Switchgear body, wiring busbars and current transformers;

[0008] The copper busbar includes an incoming busbar, a busbar, and a lower branch busbar;

[0009] The incoming line is located on the top of the switch cabinet body. One end of the incoming line is connected to the busbar, and the other end of the busbar is connected to the lower branch.

[0010] The busbar is arranged at an angle relative to the horizontal baseline of the switch cabinet body and is installed vertically within the switch cabinet body;

[0011] The first end of the current transformer is connected to the lower branch, and the last end of the current transformer is connected to the cable busbar inside the switch cabinet.

[0012] In another aspect of the present invention, preferably, the current transformer is mounted on the top of the switch cabinet body using a hoisting structure.

[0013] In another aspect of the present invention, preferably, the busbars are arranged in multiple groups from the top of the switch cabinet body downwards, and the incoming line bars are arranged in multiple groups, with each incoming line bar corresponding to a busbar.

[0014] In another aspect of the present invention, preferably, the other end of the busbar is connected to the lower branch busbar via a circuit breaker in the switch cabinet.

[0015] In another aspect of the present invention, preferably, the lower support row is provided with a bending structure, wherein the bending angle of the bending structure is greater than 90°.

[0016] In another aspect of the present invention, preferably, the tail end of the current transformer is integrated with the cable busbar and the grounding switch conductor in the switch cabinet.

[0017] In another aspect of the present invention, preferably, both the incoming line and the busbar are provided with two rows of connecting holes, which are used for connection and fixation.

[0018] In another aspect of the present invention, preferably, the hoisting structure is a detachable structure.

[0019] In another aspect of the present invention, preferably, the current transformer is located in the upper middle space of the switch cabinet body.

[0020] In another aspect of the present invention, preferably, the detachable structure of the hoisting structure includes a bolt structure, a lifting ring and rod structure, or a support structure.

[0021] (III) Beneficial Effects

[0022] The above-described technical solution of the present invention has the following beneficial technical effects:

[0023] This invention achieves smooth cable wiring, rational cabling, and convenient on-site construction by placing the incoming busbar at the top of the switchgear and forming a continuous power transmission path with the busbar and lower branch. The busbar adopts an oblique design and is arranged vertically, which not only makes full use of the internal space of the switchgear but also significantly improves the current carrying capacity of the busbar, while reducing phase-to-phase electromagnetic interference and improving the stability of power transmission. The lower branch has a bending structure at the connection with the current transformer, with a bending angle greater than 90°, which optimizes the cable routing, reduces the installation space occupied, and makes the layout inside the cabinet more flexible. The end of the current transformer forms an integrated structure with the cable busbar and the grounding switch conductor, simplifying the wiring process and improving electrical safety and reliability. The overall structure is compact and reasonable, the current transformer is installed stably, and there is sufficient space for cable wiring operations, providing convenience for on-site construction and facilitating later maintenance and repair. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0025] Figure label:

[0026] 1: Switch cabinet body,

[0027] 2: Copper busbar, 21: Incoming line busbar, 22: Busbar, 23: Sub-branch busbar

[0028] 3: Mutual transformer. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0030] The accompanying drawings show structural schematic diagrams according to embodiments of the present invention. These drawings are not drawn to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0031] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] The invention will now be described in more detail with reference to the accompanying drawings. In the drawings, the same elements are indicated by similar reference numerals. For clarity, the various parts in the drawings are not drawn to scale.

[0034] Example 1

[0035] A switch cabinet that facilitates cable installation. Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is shown, as follows. Figure 1 As shown, it includes:

[0036] 1. Switch cabinet body, 2. Wiring copper busbar, and 3. Current transformer;

[0037] The copper busbar 2 includes an inlet busbar 21, a busbar 22, and a lower branch busbar 23;

[0038] The incoming line busbar 21 is located at the top of the switchgear body 1. One end of the incoming line busbar 21 is connected to one end of the busbar 22, and the other end of the busbar 22 is connected to the lower branch busbar 23. The incoming line busbar 21, located at the top of the switchgear body 1, is used to introduce electrical energy from an external power source or transformer into the cabinet, ensuring reliable power transmission. One end of the incoming line busbar 21 is fixedly connected to the busbar 22, allowing current to be smoothly transmitted to the busbar 22. The other end of the busbar 22 is connected to the lower branch busbar 23, forming a continuous current path from the incoming line busbar 21 to the lower branch busbar 23.

[0039] The busbar 22 is arranged at an angle relative to the horizontal baseline of the switch cabinet body 1 and is set vertically inside the switch cabinet body 1; this arrangement not only optimizes the internal layout of the cabinet, but also maximizes its current carrying capacity.

[0040] The first end of the current transformer 3 is connected to the lower branch 23, and the last end of the current transformer 3 is connected to the cable busbar inside the switch cabinet. This achieves a reasonable connection between the busbar, the current transformer, and the cable. The cabinet layout is compact, with ample operating space, facilitating on-site installation and subsequent maintenance. The overall structure is stable and reliable, ensuring the safety of power transmission while improving construction efficiency and maintenance convenience.

[0041] Furthermore, in this embodiment, the current transformer 3 is mounted on the top of the switchgear body 1 using a hoisting structure. The hoisting structure is detachable to facilitate the installation, disassembly, and maintenance of the current transformer, improving the convenience of on-site construction. The detachable hoisting structure includes a bolt structure, a lifting ring and rod structure, or a bracket structure. The bolt structure directly fixes the current transformer to the support plate or beam on top of the switchgear with bolts, ensuring the current transformer's stability and firmness. The lifting ring and rod structure connects the top lifting ring of the current transformer to the rod, achieving suspended installation with even weight distribution and easy handling. The bracket structure supports and fixes the current transformer using metal brackets or guide rails installed inside the cabinet, allowing the current transformer to slide along the guide rails for installation and disassembly, thereby improving maintenance efficiency. These various hoisting methods can be flexibly selected according to the weight and size of the current transformer and on-site construction conditions to achieve an installation scheme that balances stability and ease of operation.

[0042] Furthermore, the current transformer 3 is located in the upper-middle space within the switchgear body 1, which fully utilizes the vertical height of the cabinet to achieve a reasonable connection with the lower branch and provides ample operating space for cable wiring and busbar layout. Installing the current transformer in the upper-middle space not only optimizes the current path within the switchgear but also facilitates heat dissipation, preventing localized overheating and improving the reliability of power transmission. This arrangement also ensures sufficient operating space for the current transformer during maintenance and replacement, reducing construction difficulty, improving on-site construction efficiency, and ensuring the compactness and safety of the overall switchgear structure.

[0043] Furthermore, in this embodiment, the busbars 22 are arranged in multiple groups from the top of the switch cabinet body 1 downwards, and the incoming line bars 21 are also arranged in multiple groups, with each incoming line bar 21 corresponding to one of the busbars 22. This ensures that each group of incoming line bars can supply power to its corresponding busbar, guaranteeing the balance and stability of current transmission. In this embodiment, both the incoming line bars 21 and the busbars 22 are arranged in three groups, divided into phase A, phase B, and phase C.

[0044] Furthermore, in this embodiment, the other end of the busbar 22 is connected to the lower branch 23 via a circuit breaker inside the switch cabinet. This forms a complete current transmission path from the incoming line 21 to the load. The introduction of the circuit breaker not only realizes the circuit protection function but also facilitates the control and maintenance of power flow, improving system safety and reliability. Through the connection between the busbar and the lower branch, power can be smoothly transmitted to the current transformer 3 and the load end, ensuring the stability of power transmission.

[0045] Furthermore, in this embodiment, the lower branch 23 is provided with a bending structure, the bending angle of which is greater than 90°, to adapt to the installation position of the current transformer 3 and the cable wiring requirements. This bending structure can optimize the spatial layout between the busbar and the current transformer, reduce the occupation of the internal space of the cabinet during installation, and ensure the smoothness and safety of the cable connection. A bending angle greater than 90° can make the cable routing more reasonable while ensuring the continuity of the current path, and avoid uneven cable stress caused by excessive bending.

[0046] Furthermore, in this embodiment, the tail end of the current transformer 3 is integrated with the cable busbar and the grounding switch conductor in the switch cabinet. This integrated arrangement not only simplifies cable wiring operations and reduces construction difficulty, but also ensures the electrical safety of the current transformer tail end, enabling grounding and power transmission to be completed in the same structure, thus improving the overall reliability of the system.

[0047] Furthermore, in this embodiment, both the incoming busbar 21 and the busbar 22 are provided with two rows of connecting holes, which are used for connection and fixation. The connection holes ensure that each busbar remains firmly connected during current transmission, preventing loosening or displacement, while also facilitating on-site construction, installation, and subsequent maintenance. The two rows of neatly arranged connecting holes also help increase the conductive area and heat dissipation performance between the busbars, improving power transmission efficiency and safety.

[0048] This invention achieves smooth cable wiring, rational cabling, and convenient on-site construction by placing the incoming busbar at the top of the switchgear and forming a continuous power transmission path with the busbar and lower branch. The busbar adopts an oblique design and is arranged vertically, which not only makes full use of the internal space of the switchgear but also significantly improves the current carrying capacity of the busbar, while reducing phase-to-phase electromagnetic interference and improving the stability of power transmission. The lower branch has a bending structure at the connection with the current transformer, with a bending angle greater than 90°, which optimizes the cable routing, reduces the installation space occupied, and makes the layout inside the cabinet more flexible. The end of the current transformer forms an integrated structure with the cable busbar and the grounding switch conductor, simplifying the wiring process and improving electrical safety and reliability. The overall structure is compact and reasonable, the current transformer is installed stably, and there is sufficient space for cable wiring operations, providing convenience for on-site construction and facilitating later maintenance and repair.

[0049] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

[0050] The above description does not provide detailed explanations of the technical aspects of each layer's patterning and etching. However, those skilled in the art should understand that various methods existing in the prior art can be used to form layers and regions of the desired shape. Furthermore, to form the same structure, those skilled in the art can also design methods that are not entirely identical to those described above.

[0051] The present invention has been described above with reference to embodiments thereof. However, these embodiments are merely illustrative and not intended to limit the scope of the invention. The scope of the invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the invention, and all such substitutions and modifications should fall within the scope of the invention.

[0052] Although embodiments of the present invention have been described in detail, it should be understood that various changes, substitutions, and modifications can be made to the embodiments of the present invention without departing from the spirit and scope of the invention.

[0053] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A switch cabinet that facilitates cable installation, characterized in that, include: Switch cabinet body (1), wiring copper busbar (2) and current transformer (3); The wiring copper busbar (2) includes an incoming line busbar (21), a busbar (22), and a lower branch busbar (23); The incoming line bar (21) is located on the top of the switch cabinet body (1). The incoming line bar (21) is connected to one end of the busbar (22), and the other end of the busbar (22) is connected to the lower branch bar (23). The busbar (22) is arranged at an angle relative to the horizontal baseline of the switch cabinet body (1) and is set in the switch cabinet body (1) in a vertical direction; The first end of the current transformer (3) is connected to the lower branch (23), and the tail end of the current transformer (3) is connected to the cable busbar inside the switch cabinet. The current transformer (3) is mounted on the top of the switch cabinet body (1) using a hoisting structure; The lower support (23) is provided with a bending structure, and the bending angle of the bending structure is greater than 90°.

2. The switchgear for easy cable installation according to claim 1, characterized in that, The busbars (22) are arranged in multiple groups from the top of the switch cabinet body (1) downwards, and the incoming line bars (21) are set in multiple groups, with each incoming line bar (21) corresponding to a busbar (22).

3. The switchgear for easy cable installation according to claim 2, characterized in that, The other end of the busbar (22) is connected to the lower branch (23) via a circuit breaker in the switch cabinet.

4. The switchgear for easy cable installation according to claim 3, characterized in that, The tail end of the current transformer (3) is integrated with the cable busbar and the grounding switch conductor in the switch cabinet.

5. The switchgear for easy cable installation according to claim 4, characterized in that, Both the incoming line (21) and the busbar (22) are provided with two rows of connecting holes, which are used for connection and fixation.

6. The switchgear for easy cable installation according to claim 1, characterized in that, The hoisting structure is a detachable structure.

7. The switchgear for easy cable installation according to claim 1, characterized in that, The current transformer (3) is located in the upper middle space inside the switch cabinet body (1).

8. The switchgear for easy cable installation according to claim 7, characterized in that, The detachable structure of the hoisting structure includes a bolt structure, a lifting ring and rod structure, or a support structure.

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