Double-layer compact high-low voltage distribution cabinet
By installing vertical and horizontal partitions inside the high and low voltage distribution cabinet, it is divided into upper and lower layers for circuit breakers and high voltage transformer trolleys, which solves the problem of low space utilization in conventional distribution cabinets and realizes multi-functional integration and safety assurance in a limited space.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN UNELECTRA ELECTRIC
- Filing Date
- 2025-08-28
- Publication Date
- 2026-06-26
AI Technical Summary
Conventional power distribution cabinets have low space utilization, cannot integrate multiple functions in a limited space, and cannot meet the needs of increasingly complex building structures.
The design incorporates a double-layer compact high and low voltage distribution cabinet, which divides the internal cavity into upper and lower layers using vertical partitions and horizontal plates. These layers are used for circuit breaker trolleys and high-voltage transformer trolleys, respectively, thereby increasing functionality and improving space utilization.
It achieves multifunctional integration within a limited space, improves space utilization, and ensures safety through mechanical interlocking and linkage locking design.
Smart Images
Figure CN224418215U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high and low voltage distribution cabinet technology, specifically a double-layer compact high and low voltage distribution cabinet. Background Technology
[0002] Conventional distribution cabinets are mostly single-layer layouts, such as the common KYN28-24 type switchgear. Only the upper layer is equipped with a circuit breaker trolley to achieve a single outgoing line function, while the lower layer is idle or only used for limited backup. The overall space utilization is low, and in scenarios where the space for power distribution facilities is limited, it cannot meet the needs of multi-device integration. With increasingly complex building structures and optimized industrial plant spaces, there is an urgent need for power distribution facilities to integrate multiple functions within limited spaces. Traditional single-function distribution cabinets cannot flexibly adjust their layout to adapt to such compact space requirements, thus limiting their applicability. Utility Model Content
[0003] The purpose of this utility model is to provide a double-layer compact high and low voltage distribution cabinet to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a double-layer compact high and low voltage distribution cabinet, comprising:
[0005] A high- and low-voltage distribution cabinet is provided, with a top cabinet installed on the top and a vertical partition installed in the inner cavity of the cabinet. A first horizontal plate and a second horizontal plate are connected to the two sides of the vertical partition, which divide the inner cavity of the high- and low-voltage distribution cabinet into upper and lower layers. A circuit breaker trolley is provided in the upper space of the first and second horizontal plates, and a high-voltage transformer trolley is provided in the lower space of the first and second horizontal plates.
[0006] The high-voltage transformer truck is equipped with a fuse, a first wireless temperature sensor and a grounding switch on one side, and a second wireless temperature sensor is embedded in the contacts and busbar connection points of the circuit breaker truck.
[0007] The beneficial effects of adopting the above technical solution are as follows: by installing vertical partitions, a first horizontal plate, and a second horizontal plate inside the high and low voltage distribution cabinet, the interior of the high and low voltage distribution cabinet is divided into upper and lower layers, namely the upper circuit breaker compartment and the lower high voltage transformer truck compartment. Through the double-layer layout of the upper circuit breaker compartment and the lower high voltage transformer truck compartment, a single cabinet can achieve dual functions, with PT monitoring added to the outgoing lines. Since the space in the power distribution facility installation area is limited, it is convenient to add functions to the high and low voltage distribution cabinet and improve space utilization without changing the size.
[0008] As a further improvement of this utility model, the top of the first horizontal plate is provided with a guide rail, and the bottom of the circuit breaker trolley is provided with a moving wheel adapted to the guide rail.
[0009] The beneficial effects of adopting the above technical solution are: the circuit breaker trolley is equipped with moving wheels and guide rails at the bottom, which supports the independent pushing and pulling operation of the circuit breaker trolley.
[0010] As a further improvement of this utility model, the bottom of the high voltage transformer trolley is provided with a retractable universal wheel bracket, and the bottom of the high voltage transformer trolley is provided with a universal wheel body adapted to the retractable universal wheel bracket.
[0011] The beneficial effects of adopting the above technical solution are: the bottom of the high voltage transformer trolley is equipped with a retractable universal wheel bracket and universal wheel body, which supports the direct extraction of the high voltage transformer trolley for maintenance without a guide rail.
[0012] As a further improvement of this utility model, the high and low voltage distribution cabinet is provided with a front upper cabinet door and a front lower cabinet door on the upper and lower sides of the front side, and a rear upper cabinet door and a rear lower cabinet door on the upper and lower sides of the rear side, respectively.
[0013] The beneficial effects of adopting the above technical solution are: the high and low voltage distribution cabinets are equipped with front upper cabinet doors, front lower cabinet doors, rear upper cabinet doors, and rear lower cabinet doors on the front and rear sides respectively, which can be opened from the front and rear sides of the upper circuit breaker compartment and the lower high voltage transformer truck compartment, making it convenient to view or maintain the internal structure of the high and low voltage distribution cabinets.
[0014] As a further improvement of this utility model, both the upper front cabinet door and the lower front cabinet door are provided with observation windows, and a simulated sign is provided at the bottom of the upper front cabinet door.
[0015] The beneficial effects of adopting the above technical solution are: observation windows are provided on both the upper front cabinet door and the lower front cabinet door, making it easy to observe the internal situation of the high and low voltage distribution cabinet through the observation windows.
[0016] As a further improvement of this utility model, a cable outlet chamber is installed at the bottom of the high and low voltage distribution cabinet. The cable outlet chamber supports double-circuit cables, and cable holes are opened on the cable outlet chamber. The cable holes are distributed in a front-to-back arrangement.
[0017] The beneficial effects of adopting the above technical solution are: the cable outlet chamber supports double-circuit cables, and the cable holes are distributed in a front-to-back split pattern, which facilitates branching connections.
[0018] As a further improvement of this utility model, the top cabinet is provided with an optical fiber communication interface, and the top of the top cabinet is provided with a cable tie plate.
[0019] The beneficial effect of adopting the above technical solution is that the high and low voltage distribution cabinet can be connected to the SCADA system by having an optical fiber communication interface on the top cabinet.
[0020] As a further improvement of this utility model, the circuit breaker truck and the high-voltage transformer truck are mechanically interlocked. The high-voltage transformer truck can only be operated when the circuit breaker truck is in the open state. The grounding switch is linked and interlocked with the front upper cabinet door, the front lower cabinet door, the rear upper cabinet door, and the rear lower cabinet door.
[0021] The beneficial effects of adopting the above technical solution are as follows: The high-voltage transformer truck can only be operated when the circuit breaker truck is in the open state. This design acts like a "safety lock" for accidental operation, directly nipping the risk of accidental short circuits and electric shock in the bud. Through the interlocking of the grounding switch with the front upper cabinet door, front lower cabinet door, rear upper cabinet door, and rear lower cabinet door, and the interlocking of the grounding switch with the cabinet door, it is ensured that the cabinet door can only be opened when the grounding switch is closed. If the equipment inside the cabinet is energized, the cabinet door cannot be opened due to the lockout, preventing operators from accidentally entering a energized compartment and contacting live parts, effectively avoiding the risk of electric shock and building a solid "safety wall" for operators. Attached Figure Description
[0022] 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, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the overall structure of the double-layer compact high and low voltage distribution cabinet of this utility model;
[0024] Figure 2 This is a side cross-sectional view of the double-layer compact high and low voltage distribution cabinet of this utility model.
[0025] Figure 3 This utility model relates to a double-layer compact high and low voltage distribution cabinet. Figure 2 Enlarged view of point A in the middle;
[0026] Figure 4 This utility model relates to a double-layer compact high and low voltage distribution cabinet. Figure 2 Enlarged view at point B in the middle;
[0027] Figure 5 This is a rear view of the double-layer compact high and low voltage distribution cabinet of this utility model.
[0028] In the diagram: 1. High and low voltage distribution cabinet; 2. Top cabinet; 3. Vertical partition; 4. First horizontal plate; 5. Second horizontal plate; 6. Circuit breaker trolley; 7. High voltage transformer trolley; 8. Fuse; 9. First wireless temperature sensor; 10. Grounding switch; 11. Second wireless temperature sensor; 12. Casters; 13. Guide rail; 14. Retractable caster bracket; 15. Caster body; 16. Front upper cabinet door; 17. Front lower cabinet door; 18. Rear upper cabinet door; 19. Rear lower cabinet door; 20. Observation window; 21. Simulation board; 22. Cable outlet compartment; 23. Cable hole; 24. Fiber optic communication interface; 25. Cable tie plate. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figures 1-5 This utility model provides a double-layer compact high and low voltage distribution cabinet, comprising:
[0031] The high and low voltage distribution cabinet 1 has a top cabinet 2 installed on its top. The internal cavity of the high and low voltage distribution cabinet 1 is equipped with a vertical partition 3. The two sides of the vertical partition 3 are respectively connected to a first horizontal plate 4 and a second horizontal plate 5. The vertical partition 3, the first horizontal plate 4 and the second horizontal plate 5 divide the internal cavity of the high and low voltage distribution cabinet 1 into upper and lower layers. The upper space of the first horizontal plate 4 and the second horizontal plate 5 is equipped with a circuit breaker truck 6, and the lower space of the first horizontal plate 4 and the second horizontal plate 5 is equipped with a high voltage transformer truck 7, i.e., a PT truck.
[0032] The high voltage transformer truck 7 is equipped with a fuse 8, a first wireless temperature sensor 9 and a grounding switch 10 on one side, and the contacts and busbar connection points of the circuit breaker truck 6 are embedded with a second wireless temperature sensor 11.
[0033] The beneficial effects of adopting the above technical solution are as follows: by setting up vertical partitions 3, first horizontal plates 4 and second horizontal plates 5 inside the high and low voltage distribution cabinet 1, the interior of the high and low voltage distribution cabinet 1 is divided into upper and lower layers, namely the upper circuit breaker compartment and the lower high voltage transformer truck compartment. Through the double-layer layout of the upper circuit breaker compartment and the lower high voltage transformer truck compartment, a single cabinet can achieve dual functions, with PT monitoring added to the outgoing lines. Since the space in the power distribution facility installation area is limited, it is convenient to add functions to the high and low voltage distribution cabinet 1 without changing the size, thereby improving the space utilization rate.
[0034] The high-voltage transformer truck 7 uses epoxy resin cast voltage transformers with an accuracy of 0.2 class and is equipped with fuse 8 for protection. The air clearance of the lower high-voltage transformer truck compartment is ≥150mm, and the electromagnetic field distribution and heat dissipation performance are verified by ANSYS Maxwell simulation.
[0035] The circuit breaker trolley 6 uses the Mitsubishi VPR-24 vacuum circuit breaker trolley, with a rated voltage of 24kV, a mechanical life of ≥30,000 cycles, a rated current of 630-2500A, a short-time withstand current of 40kA / 4s, and is equipped with an electric spring energy storage mechanism and an anti-pumping interlocking device as standard.
[0036] In one embodiment of this utility model, the top of the first horizontal plate 4 is provided with a guide rail 13, and the bottom of the circuit breaker trolley 6 is provided with a moving wheel 12 adapted to the guide rail 13.
[0037] The beneficial effects of adopting the above technical solution are: the circuit breaker trolley 6 is equipped with moving wheels 12 and guide rails 13 at the bottom, which supports the independent pushing and pulling operation of the circuit breaker trolley 6.
[0038] In one embodiment of this utility model, the bottom of the high voltage transformer handcart 7 is provided with a retractable universal wheel bracket 14, and the bottom of the high voltage transformer handcart 7 is provided with a universal wheel body 15 adapted to the retractable universal wheel bracket 14.
[0039] The beneficial effects of adopting the above technical solution are: the bottom of the high voltage transformer trolley 7 is equipped with a retractable universal wheel bracket 14 and a universal wheel body 15, which supports the direct extraction of the high voltage transformer trolley 7 for maintenance without a guide rail.
[0040] In one embodiment of this utility model, the front upper cabinet door 16 and the front lower cabinet door 17 are respectively provided on the upper and lower sides of the front side of the high and low voltage distribution cabinet 1, and the rear upper cabinet door 18 and the rear lower cabinet door 19 are respectively provided on the upper and lower sides of the rear side of the high and low voltage distribution cabinet 1.
[0041] The beneficial effects of adopting the above technical solution are: the front upper cabinet door 16, the front lower cabinet door 17, the rear upper cabinet door 18 and the rear lower cabinet door 19 are respectively provided on the front and rear sides of the high and low voltage distribution cabinet 1, which can be opened from the front and rear sides of the upper circuit breaker compartment and the lower high voltage transformer truck compartment, respectively, making it convenient to view or maintain the internal structure of the high and low voltage distribution cabinet 1.
[0042] In one embodiment of this utility model, both the upper front cabinet door 16 and the lower front cabinet door 17 are provided with observation windows 20, and the lower part of the upper front cabinet door 16 is provided with a simulated sign 21.
[0043] The beneficial effect of adopting the above technical solution is that observation windows 20 are provided on both the upper front cabinet door 16 and the lower front cabinet door 17, which facilitates observation of the internal situation of the high and low voltage distribution cabinet 1 through the observation windows 20.
[0044] In one embodiment of this utility model, a cable outlet chamber 22 is installed at the bottom of the high and low voltage distribution cabinet 1. The cable outlet chamber 22 supports double-circuit cables. Cable holes 23 are opened on the cable outlet chamber 22, and the cable holes 23 are distributed in a front-to-back arrangement.
[0045] The beneficial effects of adopting the above technical solution are: the cable outlet chamber 22 supports double-circuit cables, and the cable holes 23 are distributed in a front-to-back split pattern, which facilitates branching connections.
[0046] In one embodiment of this utility model, the top cabinet 2 is provided with an optical fiber communication interface 24, and the top of the top cabinet 2 is provided with a cable tie plate 25.
[0047] The beneficial effect of adopting the above technical solution is that the high and low voltage distribution cabinet 1 can support access to the SCADA system by providing an optical fiber communication interface 24 on the top cabinet 2.
[0048] In one embodiment of this utility model, the circuit breaker truck 6 and the high-voltage transformer truck 7 are mechanically interlocked. The high-voltage transformer truck 7 can only be operated when the circuit breaker truck 6 is in the open state. The grounding switch 10 is linked and interlocked with the front upper cabinet door 16, the front lower cabinet door 17, the rear upper cabinet door 18, and the rear lower cabinet door 19.
[0049] The beneficial effects of adopting the above technical solution are as follows: The high-voltage transformer trolley 7 can only be operated when the circuit breaker trolley 6 is in the open state. This design acts like a "safety lock" for accidental operation, directly nipping the risk of accidental short circuits and electric shock in the bud. Through the interlocking of the grounding switch 10 with the front upper cabinet door 16, front lower cabinet door 17, rear upper cabinet door 18, and rear lower cabinet door 19, and the interlocking of the grounding switch 10 with the cabinet door, it is ensured that the cabinet door can only be opened when the grounding switch 10 is closed. If the equipment inside the cabinet is energized, the cabinet door cannot be opened due to the lock, preventing operators from accidentally entering a energized compartment and contacting energized components, effectively avoiding the risk of electric shock and building a solid "safety wall" for operators.
[0050] Top cabinet 2 is equipped with an axial flow fan and a baffle plate (not shown in the figure) for forced heat dissipation, with a temperature rise of ≤40K; the insulation material is made of nano-modified epoxy resin, the safety clearance is reduced by 20%, and it has passed the power frequency withstand voltage test of 65kV and the lightning impulse test of 125kV.
[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A double-layer compact high and low voltage distribution cabinet, characterized in that, include: A high- and low-voltage distribution cabinet is provided, with a top cabinet installed on the top and a vertical partition installed in the inner cavity of the cabinet. A first horizontal plate and a second horizontal plate are connected to the two sides of the vertical partition, which divide the inner cavity of the high- and low-voltage distribution cabinet into upper and lower layers. A circuit breaker trolley is provided in the upper space of the first and second horizontal plates, and a high-voltage transformer trolley is provided in the lower space of the first and second horizontal plates. The high-voltage transformer truck is equipped with a fuse, a first wireless temperature sensor and a grounding switch on one side, and a second wireless temperature sensor is embedded in the contacts and busbar connection points of the circuit breaker truck.
2. The double-layer compact high and low voltage distribution cabinet according to claim 1, characterized in that, The top of the first horizontal plate is provided with a guide rail, and the bottom of the circuit breaker trolley is provided with a moving wheel that is adapted to the guide rail.
3. The double-layer compact high and low voltage distribution cabinet according to claim 1, characterized in that, The bottom of the high voltage transformer trolley is equipped with a retractable universal wheel bracket, and the bottom of the high voltage transformer trolley is equipped with universal wheel bodies that are adapted to the retractable universal wheel bracket.
4. The double-layer compact high and low voltage distribution cabinet according to claim 1, characterized in that, The high and low voltage distribution cabinet is provided with a front upper cabinet door and a front lower cabinet door on the upper and lower sides of the front, respectively, and a rear upper cabinet door and a rear lower cabinet door on the upper and lower sides of the rear, respectively.
5. The double-layer compact high and low voltage distribution cabinet according to claim 4, characterized in that, Both the upper front cabinet door and the lower front cabinet door are equipped with observation windows, and a simulated sign is provided at the bottom of the upper front cabinet door.
6. The double-layer compact high and low voltage distribution cabinet according to claim 1, characterized in that, The bottom of the high and low voltage distribution cabinet is equipped with a cable outlet compartment, which supports double-circuit cables. The cable outlet compartment has cable holes, which are arranged in a front-to-back split pattern.
7. The double-layer compact high and low voltage distribution cabinet according to claim 1, characterized in that, The top cabinet is equipped with an optical fiber communication interface, and the top of the top cabinet is equipped with a cable tie plate.
8. The double-layer compact high and low voltage distribution cabinet according to claim 4, characterized in that, The circuit breaker truck and the high-voltage transformer truck are mechanically interlocked. The high-voltage transformer truck can only be operated when the circuit breaker truck is in the open state. The grounding switch is linked and interlocked with the front upper cabinet door, the front lower cabinet door, the rear upper cabinet door, and the rear lower cabinet door.