Vertical fuse disconnecting switch

Abstract

A vertical fuse disconnecting switch comprises a base, at least two fuse disconnecting switch assemblies are vertically distributed on the base, and the vertical fuse disconnecting switch has the advantages that two fuse units are arranged along the vertical direction, so that the transverse occupied size of the whole structure is remarkably reduced, and the fuse disconnecting switch is convenient to assemble and disassemble. The device is more convenient to arrange in a switch cabinet or complete equipment with limited depth, and the purpose of saving transverse space is achieved. According to the arrangement relation between the two fuse disconnecting switch assemblies, the two fuse disconnecting switch assemblies are allowed to be electrically connected through the metal conductive pieces while maintaining independent functions, so that the installation mode of upper incoming line and lower outgoing line or same-side incoming line and outgoing line is met, and rapid installation in integrated equipment is also facilitated.

Description

Technical Field

[0001] This utility model relates to a vertical fuse disconnect switch, belonging to the field of fuse disconnect switches. Background Technology

[0002] Fuse disconnect switches, as commonly used protection and isolation devices in power systems, are typically installed inside distribution cabinets or switchgear to control circuit switching and provide fault protection. Existing fuse disconnect switches mostly adopt a side-by-side horizontal arrangement, where multiple fuse disconnect switches are arranged parallel to each other in the horizontal direction, resulting in a large lateral space occupied by the overall structure. When the internal space of the switchgear or distribution cabinet is limited, this side-by-side structure cannot meet the requirements for compact installation and is not conducive to the miniaturization design of the equipment.

[0003] On the other hand, in existing parallel-type fuse disconnect switches, the conductive connections between fuse units and between the fuse units and the outgoing terminals are typically made using flexible copper connections. While flexible copper connections offer a degree of flexibility and ease of installation, their manufacturing process is complex, material costs are high, and they are prone to deformation or fatigue during long-term operation, affecting conductivity stability and overall service life. Furthermore, multi-segment flexible connections have limited current-carrying capacity under high current conditions, which limits their application in high-reliability scenarios.

[0004] Existing technologies suffer from problems such as large space occupation, high cost of copper flexible connections, and insufficient reliability in side-by-side structures. There is an urgent need for a new type of fuse disconnect switch with a more compact structure, more reliable connection method, and lower cost. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a vertical fuse disconnect switch.

[0006] A vertical fuse disconnect switch includes a base on which at least two fuse disconnect switch assemblies are vertically distributed.

[0007] Furthermore, each of the aforementioned fuse disconnector assemblies includes at least an outgoing terminal and an incoming terminal, with the incoming terminal of the upper fuse disconnector assembly connected to the incoming terminal of the lower fuse disconnector assembly.

[0008] Furthermore, the fuse disconnector assembly located above is the first fuse disconnector assembly, and the fuse disconnector assembly located below is the second fuse disconnector assembly. The first fuse disconnector assembly includes a first outgoing terminal and a first incoming terminal, and the second fuse disconnector assembly includes a second outgoing terminal and a second incoming terminal.

[0009] Furthermore, the first outgoing terminal includes a plurality of first outgoing connectors arranged in parallel at intervals. Each first outgoing connector includes a mounting portion fixed to the first fuse disconnector assembly. The mounting portion is connected to an extension portion that is bent to fit the outer contour of the second fuse disconnector assembly. The extension portion is connected to a connecting portion that extends to the lower part of the second outgoing terminal for wiring.

[0010] Furthermore, the extension is vertically arranged, the connecting part is horizontally arranged, and the connection point is twisted 90° to connect.

[0011] Furthermore, the first incoming line end includes a plurality of first incoming line connectors arranged in parallel at intervals, and the first incoming line connectors extend to and connect to the second incoming line end.

[0012] Furthermore, the second incoming line end is provided with a plug-in component, and the end of the first incoming line connector is provided with a connecting piece. The connecting piece is bent and its other end is plugged into the plug-in component.

[0013] Furthermore, both the first outgoing connector and the first incoming connector are made of rigid copper busbars.

[0014] Furthermore, there are three first outgoing connectors, which are correspondingly located below the second outgoing terminal.

[0015] The beneficial effects of this utility model are as follows: By arranging the two fuse units vertically, the lateral dimension of the overall structure is significantly reduced, making it easier to arrange in switch cabinets or complete sets of equipment with limited depth, thus saving lateral space. The arrangement between the two fuse disconnector assemblies allows them to maintain independent functions while being electrically connected through metal conductive parts, accommodating installation methods such as top-in / bottom-out or same-side in / out, and also facilitating rapid installation in integrated equipment. Attached Figure Description

[0016] 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, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention, which removes the second fuse disconnector switch assembly.

[0019] Figure 3This is a schematic diagram of the structure of the present invention that removes the first fuse disconnector switch assembly.

[0020] In the figure, 1 is the base; 2 is the first fuse disconnector assembly; 21 is the first outgoing terminal; 22 is the first outgoing connector; 23 is the mounting part; 24 is the extension part; 25 is the connecting part; 26 is the first incoming terminal; 27 is the first incoming connector; 3 is the second fuse disconnector assembly; 31 is the second outgoing terminal; 32 is the second incoming terminal; 33 is the plug-in part; and 34 is the connecting piece. Detailed Implementation

[0021] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0022] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0023] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0024] In current related technologies, fuse disconnect switches typically employ a horizontally arranged arrangement of multiple fuse units. While this structure is intuitive, it occupies a significant amount of lateral space within the cabinet. When integrating multiple sets of fuse protection units, it often leads to an increase in the overall lateral dimensions of the equipment, making it unsuitable for compact switchgear or complete systems. Furthermore, in existing side-by-side structures, the fuses are generally connected using soft copper wire or soft copper stranded wire. This type of connection is prone to localized overheating and wiring instability when carrying high currents, and the processing and maintenance costs of flexible connections are high, while the structure is not robust enough. Therefore, there is a need for a fuse disconnect switch structure that can save installation space and reduce connection costs.

[0025] like Figure 1-3The illustration shows an embodiment of a vertical fuse disconnect switch according to this utility model, comprising a base 1, on which a first fuse disconnect switch assembly 2 and a second fuse disconnect switch assembly 3 are arranged sequentially along the vertical direction. Both the first fuse disconnect switch assembly 2 and the second fuse disconnect switch assembly 3 can adopt the existing structure of fuse disconnect switches, including a fuse body, a breaking mechanism, and a mounting bracket, etc., which are conventional structures in this field.

[0026] By arranging the two fuse units vertically, the lateral footprint of the overall structure is significantly reduced, making it easier to install in switchgear or complete sets of equipment with limited depth, thus saving lateral space. The arrangement between the two fuse disconnector assemblies allows them to maintain independent functions while being electrically connected via metal conductive parts, accommodating installation methods such as top-in / bottom-out or same-side in / out, and also facilitating rapid installation in integrated equipment.

[0027] Each of the aforementioned fuse disconnector assemblies includes at least an outgoing terminal and an incoming terminal, with the incoming terminal of the upper fuse disconnector assembly connected to the incoming terminal of the lower fuse disconnector assembly.

[0028] The beneficial effect of this implementation is that by setting the connection between the incoming terminals in a vertical direction, the wiring of the two fuse units can more easily conform to the vertical wiring structure inside the electrical cabinet, reducing bending points caused by horizontal wiring and improving the stability of current transmission. Furthermore, due to the shortened connection path and reduced wiring loss, the conductivity of the entire system is more stable. In specific applications, the connector can be a strip-shaped copper busbar or a stepped rigid connector, which is fastened along the fixed bracket with screws, enabling the electrical series connection of the two fuse switch assemblies after a short-distance conduction. As an alternative embodiment, those skilled in the art can also use socket terminals or crimp connectors to connect the two incoming terminals to meet the needs of different installation methods.

[0029] In another embodiment, for ease of description, the upper switch assembly can be referred to as the first fuse disconnect switch assembly 2, and the lower switch assembly as the second fuse disconnect switch assembly 3. The first fuse disconnect switch assembly 2 includes a first outgoing terminal 21 and a first incoming terminal 26; the second fuse disconnect switch assembly 3 includes a second outgoing terminal 31 and a second incoming terminal 32.

[0030] Furthermore, the first outgoing terminal 21 includes a plurality of first outgoing connectors 22 arranged in parallel and spaced apart. Each first outgoing connector 22 includes a mounting portion 23 fixed to the first fuse disconnector assembly 2. The mounting portion 23 is connected to an extension portion 24 that is bent to fit the outer contour of the second fuse disconnector assembly 3. The extension portion 24 is connected to a connecting portion 25 that extends to the bottom of the second outgoing terminal 31 for wiring.

[0031] The beneficial effect of this embodiment is that by fixing the mounting part 23 to the first fuse disconnector assembly 2, the stability and stress reliability of the entire outgoing line structure can be guaranteed; the extension part 24 is bent according to the outer contour of the second fuse disconnector assembly 3 so that it can naturally fit the lateral contour of the lower assembly, avoiding interference caused by rigid straight line connection, and improving the compactness and space utilization of the overall assembly.

[0032] In another embodiment, the extension 24 is vertically arranged, and the connecting part 25 is horizontally arranged, with the connection point twisted 90° to form a butt joint. The advantage of this embodiment is that, by utilizing the combination of vertical and horizontal twists, the conductive area can more effectively avoid the housing of the second fuse disconnector assembly 3 in space, allowing the connecting part 25 to be arranged more naturally below the second outgoing terminal 31, thus making the cable's outgoing direction more consistent with installation habits.

[0033] The first incoming terminal 26 may include a plurality of first incoming connectors 27 arranged in parallel, the plurality of first incoming connectors 27 extending in a vertical direction so that their ends can form an electrical connection with the second incoming terminal 32.

[0034] In practical applications, the first incoming line connector 27 can be made of a single copper busbar or a stepped folded plate to fit the shape of the component, thereby making the installation position clearer.

[0035] In another preferred configuration, a plug-in member 33 is provided in the second incoming line end 32, and a connecting piece 34 is provided at the end of the first incoming line connector 27. The connecting piece 34 is bent to form a plug-in structure so that it can be plugged into the plug-in member 33 for connection.

[0036] The beneficial effects of this embodiment are that by replacing traditional bolts or welding with a plug-in connection, the installation and maintenance process becomes more convenient. When any component needs to be disassembled, separation can be completed without disassembling all connecting parts, improving equipment maintainability. The bending design of the plug-in structure also increases the clamping force during plugging, making the contact area more stable.

[0037] In some embodiments, both the first outgoing connector 22 and the first incoming connector 27 can be made of rigid copper busbar material.

[0038] The beneficial effect of this embodiment is that choosing copper busbars as the conductor material can significantly reduce the risk of deformation during the bending process of the connector, while also reducing contact instability caused by the swaying of flexible connectors. Hard copper busbars have good conductivity and mechanical strength, can maintain a low temperature rise when carrying large currents, and can maintain structural stability. In specific implementations, the copper busbars can be processed into straight plates or stepped plates with bends, depending on the current conduction direction. As an alternative embodiment, silver-plated copper busbars or aluminum-copper composite busbars can also be used to meet corrosion resistance or lightweight requirements.

[0039] In another preferred configuration, the number of first outgoing connectors 22 can be set to three, corresponding to three positions below the second outgoing terminal 31, so as to connect three-phase lines or three sets of independent branch lines. The three first outgoing connectors 22 can be arranged laterally at intervals, so as to be consistent with the arrangement direction of the three-phase conductors, making the lead-out position of each phase clear and definite during wiring.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0041] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A vertical fuse disconnect switch, characterized in that: Includes a base on which at least two fuse disconnector assemblies are vertically distributed.

2. The vertical fuse disconnector as described in claim 1, characterized in that: Each of the aforementioned fuse disconnector assemblies includes at least an outgoing terminal and an incoming terminal, with the incoming terminal of the upper fuse disconnector assembly connected to the incoming terminal of the lower fuse disconnector assembly.

3. The vertical fuse disconnector as described in claim 2, characterized in that: The fuse disconnector assembly located above is the first fuse disconnector assembly, and the fuse disconnector assembly located below is the second fuse disconnector assembly. The first fuse disconnector assembly includes a first outgoing terminal and a first incoming terminal, and the second fuse disconnector assembly includes a second outgoing terminal and a second incoming terminal.

4. The vertical fuse disconnector as described in claim 3, characterized in that: The first outgoing terminal includes a plurality of first outgoing connectors arranged in parallel at intervals. Each first outgoing connector includes a mounting portion fixed to the first fuse disconnector assembly. The mounting portion is connected to an extension portion that is bent to fit the outer contour of the second fuse disconnector assembly. The extension portion is connected to a connecting portion that extends to the bottom of the second outgoing terminal for wiring.

5. The vertical fuse disconnector as described in claim 4, characterized in that: The extension is vertically arranged, and the connecting part is horizontally arranged, with the connection point twisted 90° to form a butt joint.

6. The vertical fuse disconnector as described in claim 3, characterized in that: The first incoming line terminal includes a plurality of first incoming line connectors arranged in parallel at intervals, and the first incoming line connectors extend to and connect to the second incoming line terminal.

7. The vertical fuse disconnector as described in claim 6, characterized in that: The second incoming line terminal is provided with a plug-in component, and the end of the first incoming line connector is provided with a connecting piece. The connecting piece is bent and its other end is plugged into the plug-in component.

8. The vertical fuse disconnector as described in claim 4, characterized in that: Both the first outgoing connector and the first incoming connector are made of rigid copper busbars.

9. The vertical fuse disconnector as described in claim 4 or 8, characterized in that: There are three first outgoing connectors, which are located below the second outgoing terminal.

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