Economical fixed separation unit

Abstract

The utility model discloses an economical fixed separation unit in the field of power transmission and distribution in the power industry, which comprises a circuit breaker, the circuit breaker is connected with a circuit breaker mounting plate, two sides of the bottom of the circuit breaker mounting plate are symmetrically provided with secondary wire passing holes, and the circuit breaker mounting plate is provided with a mounting hole A and a mounting hole B at positions between two groups of bus holes. A wire inlet side busbar is arranged in the bus hole, one end of the wire inlet side busbar is connected with a vertical busbar, a wire outlet side busbar is arranged in the bus hole, one end of the wire outlet side busbar is electrically connected with a current transformer, the other end of the wire outlet side busbar is connected with an insulator, the other end of the insulator is connected with an insulator support, the insulator support is connected with a vertical beam, and the vertical beam is connected with a power supply. By canceling a plug-in base matched with the circuit breaker, changing the installation mode of the circuit breaker and optimizing the structure of the installation plate, the flexibility of power distribution loop interval configuration is improved, the brand dependence of later maintenance and transformation is reduced, the installation is simple and convenient, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power transmission and distribution technology in the power industry, and in particular to an economical fixed partition unit. Background Technology

[0002] Low-voltage fixed-section switchgear is an important component of power systems and is widely used. Commonly available low-voltage fixed-section switchgear is suitable for power systems with many circuits. Within standard fixed bays, its internal structure is relatively fixed. Insert-in circuit breakers and their matching insert-in bases are installed on the back panel and connected to the rear busbar via the primary busbar. Once installed, the position and configuration of each functional unit are difficult to adjust. Adjusting the circuit configuration often requires significant modifications to the entire cabinet, which is time-consuming and labor-intensive. Circuit breaker installation requires matching insert-in bases and secondary control components, resulting in higher costs due to the use of more materials and more complex processes compared to some simpler low-voltage distribution cabinets.

[0003] Chinese Patent CN203103790U discloses a feeder cabinet, including a cabinet body with pluggable switches installed inside. The cabinet body includes functional unit mounting chambers, a vertical busbar chamber, and a cable outlet chamber. The cabinet body is formed by the functional unit mounting plate and the vertical busbar partition, creating a front-to-back arrangement of the functional unit mounting chambers, vertical busbar chamber, and cable outlet chamber. Each functional unit mounting chamber has a corresponding functional column on both sides, and the functional unit mounting plate is connected to the functional column. This invention uses pluggable switches for fixed installation, resulting in a simple structure, fixed wiring, reliable electrical connection quality, and effective cabinet partitioning. This effective partitioning prevents the escalation of accidents and achieves cabinet miniaturization and cost reduction. This invention is compact, economical, modular, highly protective, and highly reliable, making it particularly suitable for customers with small power distribution rooms or those upgrading their power distribution rooms.

[0004] However, the above-mentioned publicly disclosed solutions have the following shortcomings: the above solutions are supported and connected by functional columns during use, but the above devices are difficult to install and cumbersome to operate in actual use, thereby reducing the installation efficiency of electrical equipment. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] The purpose of this utility model is to address the technical problems existing in the background art. This utility model proposes an economical fixed partition unit. This utility model eliminates the circuit breaker plug-in base by changing the circuit breaker body from plug-in to a standard fixed front-mounted plate. Different capacity circuit breaker mounting holes are reserved on the mounting plate at the same height interval. This can save the complicated opening of the plug-in base, solve the restriction of the plug-in base on the circuit breaker configuration, improve the flexibility of configuration change and reduce the production cost of plug-in base and plug-in circuit breaker.

[0007] By eliminating the plug-in base that accompanies the circuit breaker, the installation method of the circuit breaker is changed, the structure of the mounting plate is optimized, the flexibility of the power distribution circuit bay configuration is improved, the brand dependence of later maintenance and modification is reduced, the installation is simple and convenient, and the cost is reduced.

[0008] This utility model proposes an economical fixed partition unit, including a circuit breaker, the circuit breaker is connected to a circuit breaker mounting plate, the bottom sides of the circuit breaker mounting plate are symmetrically provided with secondary wire passage holes, the circuit breaker mounting plate is provided with two sets of busbar holes, and the circuit breaker mounting plate is provided with mounting hole A and mounting hole B at the position between the two sets of busbar holes.

[0009] The busbar hole is equipped with an inlet busbar, one end of which is connected to a vertical busbar. The busbar hole is also equipped with an outlet busbar, one end of which is electrically connected to a current transformer. The other end of the outlet busbar is connected to an insulator, the other end of which is connected to an insulator bracket. The insulator bracket is connected to a vertical beam, the side of which is connected to a side plate, and the vertical beam is connected to a base plate.

[0010] By adopting the above technical solution, this solution can improve the stability of the installation structure of the device through the combination of vertical beam and mounting plate. At the same time, by limiting the cable through the busbar hole, it can prevent problems such as cable entanglement from occurring in this device.

[0011] Preferably, the side plates are symmetrically arranged on both sides of the circuit breaker, and the side plates are connected to mounting brackets, which are in contact with the sides of the circuit breaker.

[0012] By adopting the above technical solution, this solution reduces the installation difficulty of the device through symmetrical side plates, while making the force at the center of the circuit breaker more uniform. At the same time, the side mounting bracket structure can protect the circuit breaker.

[0013] Preferably, a partition is connected to the side of the mounting bracket, and the partition is connected to the side of the circuit breaker.

[0014] By adopting the above technical solution, this solution can achieve the supporting effect of the circuit breaker through the combination of the partition and the circuit breaker, thereby improving the installation and fixing stability of the device.

[0015] Preferably, the insulator support is provided with a plurality of insulators at equal intervals, and each of the plurality of insulators is independently connected to a busbar on the outgoing side.

[0016] By adopting the above technical solution, this solution can ensure the stable connection of the cable of this device while reducing the difficulty of cable docking, and avoid the risk of short circuit of the casing of this device through the combination of insulator and outgoing busbar.

[0017] Preferably, the mounting bracket has four mounting holes at the front and rear, and connecting bolts are provided inside the mounting holes.

[0018] By adopting the above technical solution, this solution can reduce the difficulty of assembling and connecting the device through the combination of mounting holes and connecting bolts.

[0019] Preferably, the outer end of the vertical busbar is connected to a three-level channel, the top of the three-level channel is provided with a three-level channel cover plate, and the side of the three-level channel cover plate is connected to the side plate.

[0020] By adopting the above technical solution, this solution can achieve the limiting effect of each port in the busbar through the combination of three-level channels and three-level channel covers, thereby reducing the difficulty of port docking during use.

[0021] In summary, this utility model has at least one of the following beneficial effects:

[0022] By changing the mounting plate, not only is the cost of the circuit breaker plug-in base eliminated, reducing the price difference between plug-in circuit breakers and fixed circuit breakers, but the manufacturing process of the mounting plate is also simplified, enabling multiple uses for one plate, improving the flexibility of circuit breaker installation, and greatly reducing the cost of later maintenance and modification. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0024] Figure 1 This is a front view of an embodiment of an economical fixed partition unit according to the present invention;

[0025] Figure 2 This is a schematic diagram of the circuit breaker mounting plate in an embodiment of the present invention;

[0026] Attached reference numerals: 1. Third-level channel cover plate; 2. Third-level channel; 3. Vertical busbar; 4. Incoming busbar; 5. Side plate; 6. Mounting bracket; 7. Circuit breaker; 8. Outgoing busbar; 9. Circuit breaker mounting plate; 10. Base plate; 11. Vertical beam; 12. Insulator; 13. Insulator bracket; 14. Current transformer; 15. Partition plate; 21. Secondary cable pass hole; 22. Busbar hole; 23. Mounting hole A; 24. Mounting hole B. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0028] Example 1, as Figures 1-2 As shown, in order to solve the existing problems, this utility model discloses an economical fixed partition unit, including a circuit breaker 7, the circuit breaker 7 is connected to a circuit breaker mounting plate 9, the circuit breaker mounting plate 9 has symmetrical secondary wire passage holes 21 on both sides of the bottom, the circuit breaker mounting plate 9 has two sets of busbar holes 22, and the circuit breaker mounting plate 9 has mounting holes A23 and B24 located between the two sets of busbar holes 22.

[0029] The busbar hole 22 is provided with an inlet busbar 4. One end of the inlet busbar 4 is connected to a vertical busbar 3. The busbar hole 22 is provided with an outlet busbar 8. One end of the outlet busbar 8 is electrically connected to a current transformer 14. The other end of the outlet busbar 8 is connected to an insulator 12. The other end of the insulator 12 is connected to an insulator bracket 13. The insulator bracket 13 is connected to a vertical beam 11. The side of the vertical beam 11 is connected to a side plate 5. The vertical beam 11 is connected to a base plate 10.

[0030] The side plates 5 are symmetrically arranged on both sides of the circuit breaker 7, and the side plates 5 are connected to the mounting brackets 6, which are in contact with the sides of the circuit breaker 7.

[0031] The mounting bracket 6 has a partition 15 connected to its side, and the partition 15 is connected to the side of the circuit breaker 7.

[0032] The insulator support 13 is provided with several insulators 12 at equal intervals, and each of the several insulators 12 is independently connected to the outgoing busbar 8.

[0033] The specific working principle is as follows: First, the fixed front-connected circuit breaker 7 is installed on the circuit breaker mounting plate 9. The incoming busbar 4 passes through the busbar hole 22 of the mounting plate and connects to the vertical busbar 3 in the third-level channel, and is tightly connected with bolts to ensure that its overlap area meets the load current carrying capacity. The outgoing busbar 8 passes through the busbar hole 22 of the mounting plate, passes through the current transformer 14, and is fixed to the insulator 12 on the outgoing cable side. The insulator 12 is installed on the cabinet vertical beam 11 through the insulator bracket 13. The user cable passes through the partition 15 and is firmly connected to the outgoing busbar 8, ensuring its insulation distance and creepage distance.

[0034] Figure 2 The circuit breaker mounting plate 9 eliminates the complex openings of the plug-in circuit breaker base, replacing them with 5mm diameter circular holes for fixing the circuit breaker 7. Mounting holes A23 and B24 of different capacities can be pre-drilled within the same height interval to accommodate various specifications of circuit breakers 7. Busbar holes 22 are opened on both sides of the switch. Secondary control components can be installed on the right side of the mounting plate, and secondary wiring holes 21 are provided. The current transformer 14 is fixed in a triangular shape on the outgoing side busbar 8. The secondary terminals of the current transformer 14 are recessed, providing more space and facilitating assembly.

[0035] The circuit breaker mounting plate 9 is fixed on the mounting brackets 6 on both sides of the cabinet. The mounting brackets 6 have four mounting holes at the front and back, and the distance between the front and back of the mounting plate can be adjusted according to the height of the circuit breaker to accommodate circuit breakers of different capacities.

[0036] use Figure 2 The circuit breaker mounting plate 9 not only eliminates the cost of plug-in bases and reduces the price difference between plug-in circuit breakers and fixed circuit breakers, but also reduces the workload of drilling holes in the mounting plate, making it multi-purpose and improving the flexibility of circuit breaker installation. It can also greatly reduce the cost of later maintenance and modification.

[0037] Example 2, as Figures 1-2 As shown, in order to solve the existing problems in this embodiment, based on the same concept as the first embodiment above, the economical fixed partition unit further includes: the mounting bracket 6 has four mounting holes at the front and rear, and the mounting holes are provided with connecting bolts.

[0038] The vertical busbar 3 is connected to a three-level channel 2 at its outer end. The top of the three-level channel 2 is provided with a three-level channel cover plate 1, and the side of the three-level channel cover plate 1 is connected to the side plate 5.

[0039] Conventional fixed partition cabinet units on the market use plug-in circuit breakers with plug-in bases. The bases are fixed to the mounting plate. One end of the incoming busbar 4 is connected to the vertical busbar 3, and the other end is directly connected to the incoming terminal on the plug-in base of the circuit breaker. One end of the outgoing busbar is connected to the outgoing terminal of the plug-in base, and the other end is reserved for field cable connection. Because of the plug-in base, plug-in circuit breakers are required, and each model and capacity must correspond one-to-one. This fixed pairing makes it very difficult to adjust parameters and capacity configurations later, and plug-in components are relatively expensive.

[0040] This device eliminates the plug-in base of the circuit breaker and changes the circuit breaker body from a plug-in type to a standard fixed front-mounted type. Different capacity circuit breaker mounting holes are reserved on the mounting plate at the same height interval. This can save the complicated opening of the plug-in base, and also solve the restriction of the plug-in base on the circuit breaker configuration. It can improve the flexibility of changing the configuration and reduce the production cost of plug-in base and plug-in circuit breaker.

[0041] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An economical fixed partition unit, comprising a circuit breaker (7), characterized in that, The circuit breaker (7) is connected to a circuit breaker mounting plate (9). The circuit breaker mounting plate (9) has symmetrical secondary wire passage holes (21) on both sides of its bottom. The circuit breaker mounting plate (9) has two sets of busbar holes (22). The circuit breaker mounting plate (9) has mounting holes A (23) and B (24) located between the two sets of busbar holes (22). The busbar hole (22) is provided with an inlet busbar (4), one end of which is connected to a vertical busbar (3). The busbar hole (22) is provided with an outlet busbar (8), one end of which is electrically connected to a current transformer (14), and the other end of which is connected to an insulator (12). The other end of which is connected to an insulator bracket (13), the insulator bracket (13) is connected to a vertical beam (11), the side of which is connected to a side plate (5), and the vertical beam (11) is connected to a base plate (10).

2. The economical fixed partition unit according to claim 1, characterized in that, The vertical busbar (3) is connected to a three-level channel (2) at its outer end. The top of the three-level channel (2) is provided with a three-level channel cover plate (1), and the side of the three-level channel cover plate (1) is connected to the side plate (5).

3. The economical fixed partition unit according to claim 2, characterized in that, The side plates (5) are symmetrically arranged on both sides of the circuit breaker (7), and the side plates (5) are connected to mounting brackets (6), which are in contact with the side of the circuit breaker (7).

4. The economical fixed partition unit according to claim 3, characterized in that, The mounting bracket (6) has a partition (15) connected to its side, and the partition (15) is connected to the side of the circuit breaker (7).

5. The economical fixed partition unit according to claim 4, characterized in that, The insulator support (13) is provided with several insulators (12) at equal intervals, and each of the several insulators (12) is independently connected to the outgoing busbar (8).

6. The economical fixed partition unit according to claim 5, characterized in that, The mounting bracket (6) has four mounting holes at the front and back, and connecting bolts are provided inside the mounting holes.

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