Integrated 6kV high voltage frequency converter front maintenance structure

Abstract

The utility model relates to a kind of integrated 6kV high-voltage frequency converter front maintenance structure, including the control part module, power part module, input output wiring module and transformer part module being arranged in cabinet body, the control part module, power part module are all box structure, control part module can be extracted from the front of cabinet body;Control part module is connected with power part module by cable, and there is insulating plate between input output wiring module and power part module.Advantages are: the utility model integrates control cabinet, power cabinet, transformer cabinet in same cabinet body and realizes front maintenance, greatly reduces equipment size, facilitates installation and maintenance, reduces the manufacturing cost of equipment, so that power unit has stronger expansibility and consistency.Power part module uses cabinet body front face pullable structure, facilitates power part module whole from front disassembly, is convenient for front maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of frequency converter technology, and in particular relates to an integrated 6kV high-voltage frequency converter front maintenance structure. Background Technology

[0002] Traditional frequency converter maintenance requires multi-faceted operation and has high space requirements. Each maintenance requires switching between operating surfaces multiple times. For example, replacing a power module requires first removing the front panel → disconnecting the side cables → removing the rear mounting screws → pulling out the module from the side or back, which takes 30% to 50% longer than single-face maintenance. In addition, when inspecting the back or top, it may be necessary to touch high-voltage terminals (even after power is cut off, residual charge in the capacitors still needs to be discharged), or to climb to heights, increasing the risk of electric shock and falls.

[0003] In space-sensitive environments such as rail transportation, ships, and mines, traditional frequency converters cannot be embedded in walls or compact cabinets due to their high maintenance space requirements. They can only be installed externally, affecting equipment integration and aesthetics, and may even increase maintenance frequency due to environmental factors such as vibration and dust. In ordinary environments, the space occupied by frequency converters due to maintenance requirements drives up factory rental / construction costs (especially in industrial parks where space is extremely valuable). At the same time, expenses for maintenance personnel, spare parts inventory, and additional cooling equipment further exacerbate the burden on enterprises. Summary of the Invention

[0004] The purpose of this utility model is to provide an integrated 6kV high-voltage frequency converter front maintenance structure that integrates the control cabinet, power cabinet, and transformer cabinet into the same cabinet and enables front maintenance, greatly reducing the size of the equipment and facilitating installation and maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An integrated 6kV high-voltage frequency converter front maintenance structure includes a control module, a power module, an input / output wiring module, and a transformer module housed within a cabinet. Both the control module and the power module are box-type structures, and the control module can be pulled out from the front of the cabinet. The control module and the power module are connected by cables, and an insulating plate is installed between the input / output wiring module and the power module.

[0007] It also includes a fan. The front of the cabinet has an air inlet, and the top of the cabinet has an air outlet. The fan is installed at the air outlet on the top of the cabinet.

[0008] The fan mentioned is an axial flow fan.

[0009] The air inlet is located in the center of the front of the cabinet.

[0010] The control module is a pull-out box structure, and the control module is connected to the cabinet via a slide rail, allowing it to be pulled out from the front of the cabinet.

[0011] The input / output wiring module is located at the bottom of the cabinet, the transformer module is located at the top of the cabinet, and the power module and control module are located in the middle of the cabinet.

[0012] The thickness of the insulating board is 3 to 10 mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model integrates the control cabinet, power cabinet, and transformer cabinet into the same cabinet and enables front maintenance, which greatly reduces the size of the equipment, facilitates installation and maintenance, reduces the manufacturing cost of the equipment, and makes the power unit more scalable and consistent.

[0015] 2. The power module of this utility model adopts a front pull-out structure of the cabinet, which makes it easy to disassemble and install the power module from the front, and facilitates maintenance.

[0016] 3. Each module of this utility model has a front-maintenance structure and a front-operation design. There is no need to disassemble the equipment or remove the surrounding parts. The internal modules can be accessed directly by opening the front panel. It has high space utilization, reasonable layout, and is suitable for complex scenarios. It is especially suitable for installation in compact cabinets or in scenarios where the modules are arranged against a wall or back to back. There is no need to reserve space for back maintenance. It is suitable for industrial environments with limited space and avoids the problem of reserving space for back maintenance in traditional rear maintenance.

[0017] 4. This utility model adopts a front air intake and top air exhaust duct design, which can effectively avoid dust accumulation or blockage at the back, improve heat dissipation efficiency, and extend the life of internal components. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the external structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the maintenance status of this utility model.

[0021] In the diagram: 1-Control module, 2-Power module, 3-Input / output wiring module, 4-Transformer module, 5-Air outlet, 6-Air inlet, 7-Box, 8-Insulation board. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0023] See Figures 1-3 An integrated 6kV high-voltage frequency converter front maintenance structure includes a control module 1, a power module 2, an input / output wiring module 3, and a transformer module 4, all housed within a cabinet. Both the control module 1 and the power module 2 are box-type structures, connected by cables whose length is adjusted according to the number of power modules 2. An insulating plate 8 separates the input / output wiring module 3 from the power module 2, completely isolating the two parts. The insulating plate 8 has a thickness of 3–10 mm, ensuring electrical isolation between the input / output wiring module 3 and the power module 2 while also supporting the power module 2.

[0024] Input / output wiring module 3 is located at the bottom of the cabinet, transformer module 4 is located at the top of the cabinet, and power module 2 and control module 1 are located in the middle of the cabinet, with control module 1 on the left and power module 2 on the right. Control module 1 is separated from its lower input / output wiring module 3 by a support plate of the cabinet, which also supports control module 1. Without changing the cabinet dimensions, adjusting the number of power module 2 and control module 1 allows for increasing or decreasing the inverter's design capacity, resulting in strong scalability and consistency.

[0025] The integrated 6kV high-voltage frequency converter's front maintenance structure also includes a fan. An air inlet 6 is located on the front of the cabinet, and an air outlet 5 is located on the top. The fan is installed at the air outlet 5 on the top of the cabinet. The fan is an axial flow fan. The air inlet 6 is located in the center of the front of the cabinet. This frequency converter's front maintenance structure uses air cooling, powered by the fan. Air enters through the air inlet 6 on the front of the cabinet and exits through the top air outlet 5. It employs a unidirectional airflow path of "front air intake - internal airflow guidance - top exhaust," effectively preventing dust accumulation or blockage at the back, improving heat dissipation efficiency, and extending the lifespan of internal components. The axial flow fan is integrated into the top of the cabinet, eliminating the need for rear and side maintenance.

[0026] The control module 1 has a pull-out box-type structure, and its box body 7 is an integrated structure. The control module 1 is fully integrated into the box body and is connected to the cabinet via a slide rail. The control module 1 can be pulled out from the front of the cabinet. It can be pulled out from the front of the equipment for installation and maintenance, which is consistent with the front maintenance method of the equipment, and allows the maintenance of each component in the control module 1 to be completed from the front of the cabinet.

[0027] This utility model has the advantage of integrated front maintenance structure: the main circuit of the high voltage frequency converter (such as power unit, charging battery, control unit, etc.) is designed into the power part module 2, input and output wiring module 3, and control part module 1 to form a modular component. The control part module 1 is integrated on the left side of the cabinet and can be pulled out for installation and maintenance from the front of the equipment. All modules of the frequency converter are integrated into the front openable door panel, eliminating the need to operate from the rear or side of the equipment, and significantly reducing the maintenance space requirement.

[0028] When equipment malfunctions, fault detection and repair can be performed entirely from the front of the cabinet, eliminating the need to enter confined or high-temperature areas at the back or sides of the equipment, greatly increasing the safety of maintenance personnel. The front also provides a clear view of the status of key components (such as indicator lights and alarm displays), facilitating routine inspections.

[0029] This invention features a front-maintenance structure and front-operation design: internal modules (such as unit modules, charging resistors, control boards, etc.) can be accessed directly by opening the front panel without disassembling the equipment or removing surrounding components. It has high space utilization and is suitable for complex scenarios, especially for installation in compact cabinets or against walls or back-to-back arrangements. It does not require reserving space for rear maintenance and is suitable for space-constrained industrial environments, avoiding the problem of reserving space for the back in traditional rear maintenance.

[0030] High-voltage insulation design: Insulation barriers (such as insulation board 8) are designed at the module and high-voltage wiring points to ensure electrical safety during maintenance in a 6kV high-voltage environment.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and the technical features disclosed in the above embodiments can be arbitrarily combined to form new embodiments, all of which will fall within the protection scope of this utility model.

Claims

1. An integrated 6kV high voltage frequency converter front maintenance structure, characterized by, It includes a control module, a power module, an input / output wiring module, and a transformer module, all housed within a cabinet. The control module and the power module are both box-type structures, and the control module can be pulled out from the front of the cabinet. The control module and the power module are connected by cables, and an insulating plate is installed between the input / output wiring module and the power module.

2. An integrated 6kV high voltage frequency converter front maintenance structure according to claim 1, characterized in that, It also includes a fan. The front of the cabinet has an air inlet, and the top of the cabinet has an air outlet. The fan is installed at the air outlet on the top of the cabinet.

3. An integrated 6kV high voltage frequency converter front maintenance structure according to claim 2, characterized in that, The fan mentioned is an axial flow fan.

4. The integrated 6kV high voltage frequency converter front maintenance structure of claim 2, wherein, The air inlet is located in the center of the front of the cabinet.

5. The integrated 6kV high voltage frequency converter front maintenance structure of claim 1, wherein, The control module is a pull-out box structure, and the control module is connected to the cabinet via a slide rail, allowing it to be pulled out from the front of the cabinet.

6. The integrated 6kV high voltage frequency converter front maintenance structure of claim 1, wherein, The input / output wiring module is located at the bottom of the cabinet, the transformer module is located at the top of the cabinet, and the power module and control module are located in the middle of the cabinet.

7. The integrated 6kV high voltage frequency converter front maintenance structure of claim 1, wherein, The thickness of the insulating board is 3 to 10 mm.

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