Multi-loop high-capacity power distribution cabinet

Abstract

The utility model discloses a multi-loop high-capacity power distribution cabinet, which comprises a cabinet body, the cabinet body is internally divided into a function chamber, an element chamber and a busbar chamber through baffle plates, the function chamber and the element chamber are arranged side by side at the front part of the cabinet body, and the baffle plates comprise vertical plates and transverse plates. The busbar chamber comprises a vertical busbar chamber and a horizontal busbar chamber, the vertical busbar chamber is divided by a vertical plate and located on the right side of the function chamber and behind the element chamber, the horizontal busbar chamber is located above the function chamber and divided by a transverse plate, the vertical busbar chamber is communicated with the horizontal busbar chamber, and the function chamber is divided into four switch chambers by a plurality of partition plates. Each switch chamber is internally provided with a frame circuit breaker, and all the frame circuit breakers are connected with copper bars arranged in the busbar chamber. According to the utility model, 800A large-current four-path outgoing lines and multiple large-capacity loops can be simultaneously satisfied, the whole equipment space is saved, and the power demand of simultaneously charging a large number of new energy vehicles can be satisfied. During short circuit, no arc light leaks in all directions of the power distribution cabinet, and personal safety can be protected.

Description

Technical Field

[0001] The utility model relates to the field of electrical cabinets, in particular to a multi-circuit large-capacity power distribution cabinet. Background Art

[0002] Distribution cabinets are used for switching, controlling, and protecting power systems in power generation, transmission, distribution, conversion, and consumption. They are primarily used in a variety of locations, including power plants, substations, businesses, residential communities, and high-rise buildings. However, some older residential communities were not initially designed to fully anticipate the dramatic increase in future electricity demand, particularly with the widespread adoption of new energy vehicles. The relatively compact substations within these communities have resulted in existing distribution systems primarily utilizing limited-capacity distribution cabinets, typically supporting only three units of 630A each. However, with the increasing number of new energy vehicles, the demand for charging facilities has also increased dramatically, leaving existing distribution capacity insufficient to meet the power demands of the large number of new energy vehicles charging simultaneously. Utility Model Content

[0003] Based on this, in order to solve the above problems, the utility model provides a multi-circuit large-capacity power distribution cabinet.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A multi-circuit large-capacity power distribution cabinet comprises a cabinet body, which is divided into a functional room, a component room and a busbar room by a baffle. The functional room and the component room are arranged side by side at the front of the cabinet body. The baffle comprises a vertical plate and a horizontal plate. The busbar room comprises a vertical busbar room separated by the vertical plate and located on the right side of the functional room and behind the component room, and a horizontal busbar room separated by the horizontal plate above the functional room. The vertical busbar room is communicated with the horizontal busbar room. The functional room is divided into four switch rooms by a plurality of partitions. A frame circuit breaker is installed in each switch room, and all frame circuit breakers are connected to the copper busbars provided in the busbar room.

[0006] This technical solution can simultaneously support 800A high-current, four-way outgoing lines and multiple high-capacity circuits. It also minimizes the switch room space, saving overall equipment space and meeting the power needs of a large number of new energy vehicles charging simultaneously. In the event of a short circuit, arc flash is eliminated from the distribution cabinet in all directions, ensuring personal safety.

[0007] In a specific embodiment of the present invention: the copper busbar is divided into a horizontal busbar located in the horizontal busbar chamber and a vertical busbar located in the vertical busbar chamber. The frame circuit breaker includes a circuit breaker body, an operation panel located on the front face of the circuit breaker body and extending from the front side face of the corresponding switch chamber. The rear face of the circuit breaker body is provided with a terminal assembly for connecting to the copper busbar and an outgoing terminal assembly for connecting to the load. All the terminal assemblies for connecting to the copper busbar are electrically connected to the vertical busbar.

[0008] In a specific embodiment of the present invention: multiple horizontal busbars and vertical busbars serve as A poles, B poles, C poles and N poles respectively, the four poles of the vertical busbar are correspondingly connected to the four poles of the horizontal busbar, the terminal assembly includes an a-pole incoming terminal, a b-pole incoming terminal and a c-pole incoming terminal, each of the a-pole incoming terminal is connected to the A pole of the vertical busbar through a first conductor, each of the b-pole incoming terminal is connected to the B pole of the vertical busbar through a second conductor, each of the c-pole incoming terminal is connected to the C pole of the vertical busbar through a third conductor, and the position of each switch room on the N pole of the vertical busbar is connected to a fourth conductor extending into the switch room.

[0009] In a specific embodiment of the present invention: the first conductor includes a first connecting plate, a first front vertical plate and a rear vertical plate connected to the left and right edges of the first connecting plate, and a first right side plate connected to the rear edge of the rear vertical plate; the second conductor includes a second connecting plate, a second front vertical plate and a first oblique plate connected to the left and right edges of the second connecting plate, and a second right side plate connected to the rear edge of the first oblique plate; the third conductor includes a third connecting plate, a third front vertical plate connected to the left and right edges of the third connecting plate, and a third right side plate connected to the front edge of the third front vertical plate on the right side; the fourth conductor includes a fourth connecting plate and a second oblique plate connected to the left edge of the fourth connecting plate, and a safety baffle is provided behind the first connecting plate in each switch room.

[0010] In a specific implementation manner of the present invention: the first conductor, the second conductor, the third conductor and the fourth conductor are all made of copper.

[0011] In a specific implementation manner of the present invention: a vertical busbar clamp for fixing the vertical busbar is installed in the vertical busbar chamber, and a horizontal busbar clamp for fixing the horizontal busbar is installed in the horizontal busbar chamber.

[0012] In a specific embodiment of the present invention, the horizontal busbar clamp is divided into an upper half and a lower half. With this structure, during installation, the upper half can be disassembled first, the horizontal busbars can be installed into the lower half in sequence, and then the upper half can be snapped onto the lower half and fixed with bolts, thus facilitating installation.

[0013] In a specific embodiment of the present invention, the horizontal busbar is composed of multiple branch busbars, and the horizontal busbar clamp is provided with multiple mounting slots for the branch busbars to pass through. This structure increases the heat dissipation surface area of ​​the horizontal busbar and improves the current carrying capacity.

[0014] In a specific implementation manner of the present invention: the number of the branch busbars is 9, and they are made of 10mm×50mmTMY.

[0015] In a specific implementation manner of the present utility model: a wiring room separated by layers is further provided on the upper part of the functional room, and the wiring room is communicated with the horizontal busbar room.

[0016] In a specific embodiment of the present invention: each switch room is provided with a front cabinet door at the front and a horizontal insulating plate at the rear, and a vertical metal plate is installed at the rear of the vertical busbar room. All horizontal insulating plates and vertical metal plates separate the rear part of the functional room into a cable room, and a rear cabinet door is installed at the rear of the cable room.

[0017] In a specific embodiment of the present invention: the bottom of the functional room is divided by the lowest partition into an air duct communicating with the vertical busbar room and the cable room, a first panel is installed at the front of the air duct, a second panel is installed at the front of the wiring room, a first air vent is provided on the lower part of the rear cabinet door and the first panel, and a second air vent is provided on the upper part of the rear cabinet door, the second panel and the upper part of the horizontal busbar room.

[0018] This utility model utilizes the aforementioned technical solution, enabling the compact design of a power distribution cabinet while simultaneously meeting the power needs of four 800A high-current outlets and multiple high-capacity circuits, as well as the simultaneous charging of a large number of new energy vehicles. Furthermore, the use of a zero-flashback circuit breaker ensures that arcing does not leak from the distribution cabinet in any direction during a short circuit, thus preventing damage to personnel and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is the main view of the power distribution cabinet of the utility model;

[0021] Figure 2 This is a right side view of the power distribution cabinet of the utility model;

[0022] Figure 3 It is a three-dimensional diagram of the power distribution cabinet of the utility model;

[0023] Figure 4 The figure shows the electrical connection between the frame circuit breaker and the vertical busbar;

[0024] Figure 5 yes Figure 4 A top view of

[0025] Figure 6 yes Figure 4 Enlarged view of point A in the middle;

[0026] Figure 7 A schematic structural diagram of the horizontal busbar clamp in Example 1 of the present utility model;

[0027] Figure 8 The horizontal busbar in embodiment 1 of the present invention is assembled on the horizontal busbar clamp;

[0028] Figure 9 The horizontal busbar in Example 2 is assembled on the horizontal busbar clamp;

[0029] Figure 10 yes Figure 9 Enlarged view of point B in the middle;

[0030] Figure 11 It is a structural schematic diagram of the horizontal busbar clamp in Example 2 of the present utility model. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1 、 Figure 2 and Figure 3 As shown, the present invention is a multi-circuit, high-capacity power distribution cabinet comprising a cabinet body 10, which is divided into a function compartment 20, a component compartment 30, and a busbar compartment 40 by a baffle. The function compartment 20 and the component compartment 30 are arranged side by side at the front of the cabinet body 10. The height of the cabinet is 2300 mm.

[0034] In this embodiment, the baffles include vertical plates 101 and horizontal plates 102. The baffles are metal plates. The busbar chamber 40 includes a vertical busbar chamber 41, located to the right of the functional chamber 20 and behind the component chamber 30, separated by the vertical plates 101, and a horizontal busbar chamber 42, located above the functional chamber 20 and separated by the horizontal plates 102. The vertical plates 101 are L-shaped. The vertical busbar chamber 41 communicates with the horizontal busbar chamber 42.

[0035] In this embodiment, the functional room 20 is divided into four switch compartments 22 by multiple partitions 21. Each switch compartment 22 is equipped with a frame circuit breaker 23. Each frame circuit breaker 23 is fixed to the front of the corresponding partition 21. The frame circuit breakers 23 are Schneider MT08H1b / 3P frame circuit breakers. This allows the overall space of the switch compartment to be relatively small, saving overall equipment space. All frame circuit breakers 23 are connected to the copper busbars provided in the busbar compartment 40.

[0036] Combine Figure 4 and Figure 6 As shown, in this embodiment, the copper busbars are divided into horizontal busbars located in the horizontal busbar chamber 42 and vertical busbars located in the vertical busbar chamber 41. The frame circuit breaker 23 includes a circuit breaker body 231 and an operating panel 232 located on the front face of the circuit breaker body and extending from the front side of the corresponding switch chamber 22. Terminal blocks 233 for connecting to the copper busbars are located on the upper side of the rear face of the circuit breaker body 231, and outgoing terminal blocks 234 for connecting to the loads are located on the lower side. All terminal blocks 233 are electrically connected to the vertical busbars.

[0037] like Figure 3 and Figure 8 As shown, in this embodiment, a plurality of horizontal busbars and vertical busbars serve as poles A 46, B 45, C 44, and N 47, respectively. The four poles of the vertical busbars are connected to the four poles of the horizontal busbars.

[0038] like Figure 4 、 Figure 5 and Figure 6 As shown, in this embodiment, each terminal block assembly 233 includes an a-pole incoming terminal 2333, a b-pole incoming terminal 2332, and a c-pole incoming terminal 2331. Each a-pole incoming terminal 2333 is connected to the A pole 46 of the vertical busbar via a corresponding first conductor 26. Each b-pole incoming terminal 2332 is connected to the B pole 45 of the vertical busbar via a corresponding second conductor 25. Each c-pole incoming terminal 2331 is connected to the C pole 44 of the vertical busbar via a third conductor 24. Secondly, the position of each switch chamber 22 on the N pole 47 of the vertical busbar is connected to a fourth conductor 27 extending into the switch chamber 22.

[0039] In addition, in this embodiment, each outlet terminal assembly 234 includes an a-pole outlet terminal 2343 , a b-pole outlet terminal 2342 , and a c-pole outlet terminal 2341 .

[0040] like Figure 4 、 Figure 5 and Figure 6As shown, in this embodiment, the first conductor 26 includes a first connecting plate 261, a first front riser 262 and a rear riser 263 connected to the left and right edges of the first connecting plate 261, and a first right side plate 264 connected to the rear edge of the rear riser 263. The first front riser 262 is connected to the corresponding a-pole incoming terminal 2333, and the first right side plate 264 is connected to the A pole 46 of the vertical busbar. The second conductor 25 includes a second connecting plate 251, a second front riser 252 and a first slanted plate 253 connected to the left and right edges of the second connecting plate, and a second right side plate 254 connected to the rear edge of the first slanted plate 253. The second front riser 252 is connected to the b-pole incoming terminal 2332, and the second right side plate 254 is connected to the B pole 45 of the vertical busbar. The third conductor 24 includes a third connecting plate 241, third front risers 242 connected to the left and right edges of the third connecting plate 241, and a third right side plate 243 connected to the front edge of the right third front riser 242. The left third front riser 242 is connected to the corresponding C-pole incoming terminal 2331, while the third right side plate 243 is connected to the C-pole 44 of the vertical busbar. The fourth conductor 27 includes a fourth connecting plate 271 and a second inclined plate 272 connected to the left edge of the fourth connecting plate 271. A safety shield 29 is installed behind the first connecting plate 261 in each switch compartment.

[0041] In this embodiment, the first conductor 26 , the second conductor 25 , the third conductor 24 and the fourth conductor 27 are all made of copper.

[0042] In addition, a vertical busbar clamp 411 for fixing the vertical busbar is installed in the vertical busbar chamber 41. A horizontal busbar clamp 421 for fixing the horizontal busbar is installed in the horizontal busbar chamber 42. Figure 7 The middle horizontal busbar clamp 421 is divided into an upper half 4211 and a lower half 4212. Thus, during installation, the upper half 4211 can be disassembled first, the horizontal busbar can be installed into the lower half 4212 first, and then the upper half 4211 can be snapped onto the lower half 4212 and fixed with bolts, thereby facilitating installation.

[0043] The upper portion of the function room 20 is equipped with a wiring compartment 28, separated by a layer plate 201. This wiring compartment 28 communicates with the horizontal busbar compartment 42. Each switch compartment 22 has a front door 221 at the front end and a horizontal insulating plate 205 at the rear end. Vertical metal plates 209 are installed at the rear of the vertical busbar compartment 41. The horizontal insulating plates 205 and vertical metal plates 209 separate the rear portion of the function room 20 into a cable compartment 206. A rear door 103 is installed at the rear of the cable compartment 206.

[0044] The bottom of the functional room 20 is divided by the lowest partition 21 into an air duct 207 that communicates with the vertical busbar chamber 41 and the cable chamber. A first panel 202 is installed in front of the air duct 207. A second panel 203 is installed in front of the wiring chamber 28. First vents 204 are provided on the lower portion of the rear cabinet door 103 and the first panel 202. Second vents 208 are provided on the upper portion of the rear cabinet door 103, the second panel 203, and the upper portion of the horizontal busbar chamber 42. In this way, fresh air enters the air duct from the first vent 204, passes through the vertical busbar chamber 41 and the horizontal busbar chamber 42, and is discharged from the second vent 208. Through exchange with the air in the vertical busbar chamber 41 and the horizontal busbar chamber 42, the heat generated by the copper busbars is effectively transferred out of the cabinet, thereby achieving cooling.

[0045] Metal side panels 104 are installed on the left and right sides of the cabinet 10 .

[0046] In this embodiment, the frame circuit breaker is a zero-flashover circuit breaker. In this way, when a short circuit occurs, there is no arc leakage in all directions of the distribution cabinet, thereby protecting the safety of equipment and personnel.

[0047] The frame circuit breakers 23 are equipped with arc extinguishing hoods. Each frame circuit breaker 23 is properly separated within the cabinet by a front door 221, a vertical plate 101 on the right side, a left side panel 104 on the left side, a safety baffle 29 on the rear side, and partitions 21 on both the upper and lower sides. The horizontal plate 102 on the upper side of the topmost frame circuit breaker 23 serves as a backup in the event of a frame circuit breaker failure, controlling arc leakage to minimize the impact of a failure and ensure operator safety.

[0048] This technical solution allows a 2300mm high distribution cabinet to simultaneously accommodate four 800A high-current outputs, multiple high-capacity circuits, and the power needs of a large number of new energy vehicles charging simultaneously. Furthermore, the use of zero-flashback circuit breakers eliminates arc leakage in all directions during a short circuit, ensuring personal safety.

[0049] Example 2

[0050] Combine Figure 9 、 Figure 10 and Figure 11As shown, this embodiment is a technical improvement based on Example 1. The height of the distribution cabinet is 2350mm, and each horizontal busbar is composed of 9 branch busbars 48. In this embodiment, the branch busbars 48 are made of 10mm×50mmTMY. The horizontal busbar clamp 421 is provided with multiple installation slots 49 for the branch busbars 48 to pass through. When the cross-sectional area of ​​the horizontal busbar in Example 1 is the same as the cross-sectional area of ​​the horizontal busbar in this embodiment, this structure is adopted. The surface area of ​​the horizontal busbar in this embodiment is larger than the surface area of ​​the horizontal busbar in Example 1, thereby increasing the surface area of ​​the horizontal busbar for heat dissipation and improving the current carrying capacity. Secondly, the number of branch busbars can be increased or decreased according to the actual current used, which is flexible and convenient to use. Furthermore, each 10mm×50mmTMY branch busbar is small in size and light in weight, which greatly reduces the labor intensity of installation.

[0051] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A multi-circuit large-capacity power distribution cabinet, comprising a cabinet body, characterized in that: The cabinet body is divided into a functional room, a component room and a busbar room by a baffle. The functional room and the component room are arranged side by side at the front of the cabinet body. The baffle includes a vertical plate and a horizontal plate. The busbar room includes a vertical busbar room separated by the vertical plate and located on the right side of the functional room and behind the component room, and a horizontal busbar room separated by the horizontal plate above the functional room. The vertical busbar room is connected to the horizontal busbar room. The functional room is divided into four switch rooms by multiple partitions. A frame circuit breaker is installed in each switch room, and all frame circuit breakers are connected to the copper busbars provided in the busbar room.

2. The multi-circuit large-capacity distribution cabinet according to claim 1 is characterized in that: The copper busbars are divided into horizontal busbars located in the horizontal busbar chamber and vertical busbars located in the vertical busbar chamber. The frame circuit breaker includes a circuit breaker body, an operation panel located on the front face of the circuit breaker body and extending from the front side of the corresponding switch chamber. The rear face of the circuit breaker body is provided with a terminal assembly for connecting to the copper busbars and an outgoing terminal assembly for connecting to the load. All terminal assemblies for connecting to the copper busbars are electrically connected to the vertical busbars.

3. The multi-circuit large-capacity distribution cabinet according to claim 2 is characterized in that: The multiple horizontal busbars and vertical busbars serve as poles A, B, C and N, respectively. The four poles of the vertical busbar are correspondingly connected to the four poles of the horizontal busbar. The terminal assembly includes pole a incoming terminal, pole b incoming terminal and pole c incoming terminal. Each pole a incoming terminal is connected to the pole A of the vertical busbar through a first conductor, each pole b incoming terminal is connected to the pole B of the vertical busbar through a second conductor, and each pole c incoming terminal is connected to the pole C of the vertical busbar through a third conductor. The position of each switch room on the N pole of the vertical busbar is connected to a fourth conductor extending into the switch room.

4. The multi-circuit large-capacity distribution cabinet according to claim 3 is characterized in that: The first conductor includes a first connecting plate, a first front vertical plate and a rear vertical plate connected to the left and right edges of the first connecting plate, and a first right side plate connected to the rear edge of the rear vertical plate; the second conductor includes a second connecting plate, a second front vertical plate and a first oblique plate connected to the left and right edges of the second connecting plate, and a second right side plate connected to the rear edge of the first oblique plate; the third conductor includes a third connecting plate, a third front vertical plate connected to the left and right edges of the third connecting plate, and a third right side plate connected to the front edge of the third front vertical plate on the right side; the fourth conductor includes a fourth connecting plate and a second oblique plate connected to the left edge of the fourth connecting plate. A safety baffle is provided behind the first connecting plate in each switch room.

5. The multi-circuit large-capacity distribution cabinet according to claim 2 is characterized in that: A vertical busbar clamp for fixing the vertical busbar is installed in the vertical busbar chamber, and a horizontal busbar clamp for fixing the horizontal busbar is installed in the horizontal busbar chamber.

6. The multi-circuit large-capacity distribution cabinet according to claim 5, characterized in that: The horizontal busbar clamp is divided into an upper half and a lower half.

7. The multi-circuit large-capacity distribution cabinet according to claim 5, characterized in that: The horizontal busbar is composed of a plurality of branch busbars, and the horizontal busbar clamp is provided with a plurality of mounting slots for the branch busbars to pass through.

8. The multi-circuit large-capacity distribution cabinet according to claim 7 is characterized in that: The number of branch busbars is 9, and they are made of 10mm×50mm TMY.

9. The multi-circuit large-capacity distribution cabinet according to claim 1, characterized in that: The upper part of the functional room is also provided with a wiring room separated by layers, and the wiring room is communicated with the horizontal busbar room. The front of each switch room is provided with a front cabinet door and the rear is provided with a horizontal insulating plate. The rear of the vertical busbar room is installed with a vertical metal plate. All horizontal insulating plates and vertical metal plates separate the rear part of the functional room into a cable room, and the rear of the cable room is installed with a rear cabinet door.

10. The multi-circuit large-capacity distribution cabinet according to claim 9, characterized in that: The bottom of the functional room is divided by the lowest partition into an air duct communicating with the vertical busbar room and the cable room. A first panel is installed at the front of the air duct, and a second panel is installed at the front of the wiring room. A first air vent is provided on the lower part of the rear cabinet door and the first panel, and a second air vent is provided on the upper part of the rear cabinet door, the second panel and the upper part of the horizontal busbar room.

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