Improved wind turbine yaw frequency conversion cabinet

Abstract

The utility model discloses an improved wind turbine yawing frequency conversion machine cabinet, and the utility model relates to wind turbine technical field, including the machine cabinet, the inside of machine cabinet is provided with a plurality of installation board that is vertical distribution, the top middle part of machine cabinet is provided with the mounting bracket, filter piece, filter piece sets up in the inner bottom wall department of machine cabinet, fan, fan sets up in the mounting bracket, sensor component, sensor component sets up on the mounting bracket, filter board, filter board sets up in the upper surface of top ventilation slot. The improved wind turbine yawing frequency conversion machine cabinet, through temperature sensor in sensor component real -time detection machine cabinet temperature, can be according to whether temperature reaches threshold value to accurate control fan's start -up and shutdown, can also decide the number of starting fan according to the heat change flexibly, avoided the energy waste that fan is always running caused, realized the heat dissipation according to need, intelligent energy -conserving, effectively reduced operating cost.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, specifically to an improved wind turbine yaw frequency converter cabinet. Background Technology

[0002] A frequency converter (VDC) is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing the frequency of its power supply. It is the core component of a variable frequency speed control system. With increasing industrial automation, VDCs are finding wider and wider applications in industrial control and daily life. In existing technologies, VDC cabinets achieve heat dissipation by opening air inlets and outlets on the cabinet exterior. However, the air inlets and outlets are located on the same side of the cabinet, failing to form a complete heat dissipation channel, resulting in severe overheating inside the VDC cabinet and poor heat dissipation performance.

[0003] Utility model patent CN217037032U discloses a frequency converter cabinet. The frequency converter cabinet includes a cabinet body, a mounting plate, and a heat dissipation assembly. The cabinet body has an accommodating space. The cabinet body includes a first cabinet wall and a second cabinet wall arranged opposite to each other. The first cabinet wall has an air inlet, and the second cabinet wall has an air outlet. The mounting plate is disposed in the accommodating space and divides the accommodating space into an air inlet cavity and an air outlet cavity. The air inlet is connected to the air inlet cavity, and the air outlet is connected to the air outlet cavity.

[0004] Existing inverter cabinets utilize heat sinks mounted on the mounting plate near the air outlet. Airflow passes over the heat sinks, carrying away the heat absorbed by them and thus dissipating heat from the inverter components, improving the cabinet's cooling performance. However, this method lacks temperature sensors and cannot adjust fan power or operation based on the cabinet's temperature, leading to energy waste. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides an improved wind turbine yaw frequency converter cabinet, which solves the existing problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an improved wind turbine yaw inverter cabinet, comprising:

[0007] The cabinet has a double-opening door on the front and multiple vertically arranged mounting plates inside for mounting the frequency converter of the wind turbine. Bottom ventilation slots are provided on both sides of the bottom of the cabinet. A mounting bracket is provided in the middle of the top of the cabinet for mounting the fan and sensor components. A top ventilation slot is provided in the middle of the top of the cabinet to form a circulation with the bottom ventilation slot.

[0008] The filter element is installed on the inner bottom wall of the cabinet and fits against the bottom ventilation slot to prevent dust from the outside air from entering the cabinet.

[0009] A fan, which is installed in the mounting frame, is used to draw outside air into the cabinet;

[0010] A sensor assembly, which is mounted on a mounting bracket, includes a sensor and a mounting bracket for mounting the sensor. It is used to detect the temperature and humidity of the cabinet in real time and facilitates quick disassembly and replacement of the sensor.

[0011] A filter plate is disposed on the upper surface of the top ventilation slot and is magnetically connected to the top of the cabinet to prevent dust in the air from entering the cabinet.

[0012] Preferably, the mounting bracket has two symmetrically distributed mounting slots, the fan is installed in the mounting slots, a connecting slot is provided between the two mounting slots, and the sensor assembly is installed in the connecting slot.

[0013] Preferably, guide posts are fixed at the four corners of the inner bottom wall of the cabinet, and the filter includes a bonding plate disposed on the inner bottom wall of the cabinet. The bonding plate is magnetically connected to the cabinet. The middle part of the bonding plate is set as a filter screen plate. Guide grooves are provided at the four corners of the bonding plate. The guide grooves cooperate with the guide posts to limit the position of the bonding plate.

[0014] Preferably, the sensor assembly includes a mounting block, with elastic clamping plates fixed on both sides of the upper surface of the mounting block. The elastic clamping plates are engaged with the connecting groove to limit the position of the mounting block. Both ends of the upper surface of the mounting block are connected to pressing blocks by multiple equally spaced springs. The pressing blocks are in close contact with the lower surface of the mounting frame to improve the clamping effect of the elastic clamping plates.

[0015] Preferably, both ends of the lower surface of the mounting block are provided with adjustment components, and sensors are installed on the adjustment components. The sensors are one or a combination of temperature sensors and humidity sensors.

[0016] Preferably, the adjusting component includes two placement slots formed on the lower surface of the mounting block for placing sensors. A groove is formed on one inner wall of each placement slot, and a screw groove is formed in the middle of the bottom of the groove. The opening of the screw groove is located at both ends of the mounting block. A pressure plate is provided inside the groove. One end of the pressure plate is used to limit the sensor in the placement slot. The other end of the pressure plate is movably connected to a screw through a bearing. The screw and the screw groove are connected through internal and external threads, and a knob is fixed at one end of the screw to drive the screw to rotate.

[0017] Beneficial effects

[0018] This utility model provides an improved yaw inverter cabinet for wind turbine units. Compared with the prior art, it has the following advantages:

[0019] 1. This improved wind turbine yaw inverter cabinet uses a temperature sensor in the sensor assembly to detect the temperature inside the cabinet in real time. It can accurately control the start and stop of the wind turbine based on whether the temperature reaches the threshold. It can also flexibly determine the number of wind turbines to start based on heat changes. Compared with the existing inverter cabinets that cannot adjust the wind turbine status according to temperature, it avoids the energy waste caused by the wind turbine running continuously, realizes on-demand heat dissipation and intelligent energy saving, and effectively reduces operating costs.

[0020] 2. The improved wind turbine yaw inverter cabinet features a sensor assembly with an easy-to-disassemble design. For example, it uses a flexible clamp to engage with the connecting slot and utilizes screws and pressure plates to limit sensor movement. When a sensor malfunctions, the limit can be quickly released, allowing for disassembly, repair, or replacement. This simple operation minimizes disruption to normal equipment operation. Furthermore, considering varying humidity levels, a humidity sensor can be installed as needed. In high humidity conditions, the inverter's own heat can be used for dehumidification, and an alarm can be triggered to alert staff for manual intervention when necessary. This enhances the device's adaptability to different humidity environments and ensures stable and reliable inverter operation in complex conditions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a bottom view of the overall structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the cabinet structure of this utility model;

[0024] Figure 4 This is a bottom view of the cabinet structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the filter element structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the sensor assembly structure of this utility model.

[0027] Figure 7 This is an exploded view of the sensor assembly structure of this utility model.

[0028] In the diagram: Cabinet 1, Cabinet door 11, Mounting plate 12, Bottom ventilation slot 13, Guide column 14, Mounting bracket 15, Mounting slot 16, Connecting slot 17, Top ventilation slot 18, Filter element 2, Adhesive plate 21, Filter screen plate 22, Guide slot 23, Fan 3, Sensor assembly 4, Mounting block 41, Elastic clamping plate 42, Pressing block 43, Spring 44, Adjusting element 45, Placement slot 451, Groove 452, Screw groove 453, Pressure plate 454, Screw 455, Knob 456, Sensor 46, Filter plate 5. 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] like Figure 1-7 As shown, this utility model provides two technical solutions:

[0031] First implementation: An improved wind turbine yaw inverter cabinet includes a cabinet 1, a filter element 2, a wind turbine 3, a sensor 46 assembly 4, and a filter plate 5. The front of the cabinet 1 has a double-opening door 11, and the other three sides of the cabinet 1 are sealed with removable baffles. The interior of the cabinet 1 contains multiple vertically arranged mounting plates 12 for mounting the wind turbine inverters. Both sides of the mounting plates 12 are fixed to the frame of the cabinet 1 by side beams and bolts. The height of each mounting plate 12 is pre-adjusted according to the size of different inverter models. Adjustment is performed by removing the baffles on both sides of the cabinet 1, and then adjusting the height of the mounting plates 12 through mounting holes of different heights on the frame of both sides of the cabinet 1. The mounting plate 12 is fixed, and an air guide channel is formed between it and the back of the cabinet 1 to facilitate air circulation, thereby facilitating the heat dissipation of the inverters on different mounting plates 12. Bottom ventilation slots 13 are provided on both sides of the bottom end of the cabinet 1. Guide columns 14 are fixed at the four corners of the inner bottom wall of the cabinet 1. A mounting bracket 15 is provided at the top center of the cabinet 1 for installing the fan 3 and the sensor 46 assembly 4. Two symmetrically distributed mounting slots 16 are provided on the mounting bracket 15. The fan 3 is installed in the mounting slot 16. A connecting slot 17 is provided between the two mounting slots 16. The sensor 46 assembly 4 is installed in the connecting slot 17. A top ventilation slot 18 is provided at the top center of the cabinet 1, which, together with the bottom ventilation slot 13, forms a circulation.

[0032] Specifically, the filter element 2 is located on the inner bottom wall of the cabinet 1 and is attached to the bottom ventilation slot 13. The filter element 2 includes a bonding plate 21 located on the inner bottom wall of the cabinet 1. The bonding plate 21 is magnetically connected to the cabinet 1 for easy disassembly, cleaning and replacement. The middle part of the bonding plate 21 is set as a filter screen 22 to prevent dust in the outside air from entering the cabinet 1. Guide grooves 23 are provided at the four corners of the bonding plate 21. The guide grooves 23 cooperate with the guide posts 14 to limit the bonding plate 21.

[0033] More specifically, the fan 3 is installed inside the mounting bracket 15 to draw outside air into the cabinet 1. The sensor 46 assembly 4 is installed on the mounting bracket 15. The sensor 46 assembly 4 includes the sensor 46 and the mounting parts for mounting the sensor 46. It is used to detect the temperature and humidity of the cabinet 1 in real time and facilitates the quick disassembly and replacement of the sensor 46. The filter plate 5 is installed on the upper surface of the top ventilation slot 18 and is magnetically connected to the top of the cabinet 1 for easy disassembly, cleaning and replacement. It is also used to prevent dust in the air from entering the cabinet 1.

[0034] The second embodiment differs from the first embodiment in that: the sensor 46 assembly 4 includes a mounting block 41, with elastic clamping plates 42 fixed on both sides of the upper surface of the mounting block 41. The elastic clamping plates 42 are snapped into the connecting groove 17 to limit the mounting block 41. Both ends of the upper surface of the mounting block 41 are connected to pressing blocks 43 by multiple equally spaced springs 44. The pressing blocks 43 are tightly fitted to the lower surface of the mounting frame 15 to improve the snapping effect of the elastic clamping plates 42. Both ends of the lower surface of the mounting block 41 are provided with adjusting members 45, on which sensors 46 are mounted. The sensors 46 are electrically connected to the fan 3 and wirelessly communicate with an external monitoring station. The sensors 46 are one or a combination of temperature sensors 46 and humidity sensors 46, used for real-time monitoring of the interior of the cabinet 1. Temperature sensor 46 is mandatory, while humidity sensor 46 is optional depending on the environment. Adjustment component 45 includes two placement slots 451 on the lower surface of mounting block 41 for placing sensor 46. A groove 452 is provided on one inner wall of placement slot 451, and a screw groove 453 is provided in the middle of the bottom of groove 452. The opening of screw groove 453 is located at both ends of mounting block 41. A pressure plate 454 is provided inside groove 452. One end of pressure plate 454 is used to limit sensor 46 in placement slot 451. The other end of pressure plate 454 is movably connected to screw 455 through bearing. Screw 455 and screw groove 453 are connected through internal and external threads, and a knob 456 is fixed at one end of screw 455 for driving screw 455 to rotate, so that sensor 46 can be quickly replaced and repaired when damaged.

[0035] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0036] During installation, first adjust the height of the mounting plate 12 according to the different models of frequency converters, and then install the frequency converter on the mounting plate 12. When the device is working, the frequency converter will generate heat. When the temperature sensor 46 detects that the temperature has reached the threshold, the fan 3 will be started. One or two fans 3 will be started according to the heat change. When the temperature has not reached the threshold, the fan 3 will not be started. The fan 3 draws outside air into the cabinet 1 through the top ventilation slot 18 and the filter plate 5, and exhausts the air from the filter element 2 and the bottom ventilation slot 13 through the air guide slot in the cabinet 1. When the air passes through the inside of the cabinet 1, it can carry away some of the heat generated by the frequency converter, achieving the effect of air cooling. The filter plate 5 and the filter element 2 are connected by magnetic attraction, which is convenient for quick disassembly and cleaning. When the device is installed in a high humidity environment, a humidity sensor 46 is set on the sensor 46 assembly 4. The humidity sensor 46 detects the humidity inside the cabinet in real time. When the humidity inside the cabinet is high... First, the high temperature generated by the inverter reduces the humidity inside the cabinet. When the humidity drops to the threshold, the fan 3 is started for heat dissipation. If the humidity does not drop to the threshold but the temperature rises to the threshold (this threshold is set when the humidity is high), the fan 3 is also started for heat dissipation to avoid the temperature from being too high and affecting the operation of the inverter. At this time, the humidity inside the cabinet is high, so the humidity sensor 46 sends an alarm to the outside staff to remind them to perform manual dehumidification to avoid damage to the inverter. When the sensor 46 malfunctions and needs to be replaced, open the cabinet door 11, then press down the two elastic plates 42 to release the limit of the mounting block 41 and the mounting bracket 15, so that the sensor 46 assembly 4 can be disassembled and replaced without affecting the operation. Then turn the knob 456, which drives the screw 455 to rotate. The screw 455 and the screw groove 453 cooperate to drive the pressure plate 454 to move, releasing the limit of the sensor 46, so that the faulty sensor 46 can be quickly disassembled and repaired.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] 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. An improved yaw inverter cabinet for wind turbine generators, characterized in that, include: The cabinet has a double-opening door on the front and multiple vertically arranged mounting plates inside for mounting the frequency converter of the wind turbine. Bottom ventilation slots are provided on both sides of the bottom of the cabinet. A mounting bracket is provided in the middle of the top of the cabinet for mounting the fan and sensor components. A top ventilation slot is provided in the middle of the top of the cabinet to form a circulation with the bottom ventilation slot. The filter element is installed on the inner bottom wall of the cabinet and fits against the bottom ventilation slot to prevent dust from the outside air from entering the cabinet. A fan, which is installed in the mounting frame, is used to draw outside air into the cabinet; A sensor assembly, which is mounted on a mounting bracket, includes a sensor and a mounting bracket for mounting the sensor. It is used to detect the temperature and humidity of the cabinet in real time and facilitates quick disassembly and replacement of the sensor. A filter plate is disposed on the upper surface of the top ventilation slot and is magnetically connected to the top of the cabinet to prevent dust in the air from entering the cabinet.

2. An improved wind turbine yaw inverter cabinet according to claim 1, characterized in that: The mounting bracket has two symmetrically distributed mounting slots, the fan is installed in the mounting slots, and a connecting slot is provided between the two mounting slots, and the sensor assembly is installed in the connecting slot.

3. An improved wind turbine yaw inverter cabinet according to claim 1, characterized in that: The cabinet has guide posts fixed at the four corners of its inner bottom wall. The filter includes a bonding plate set on the inner bottom wall of the cabinet. The bonding plate is magnetically connected to the cabinet. The center of the bonding plate is set as a filter screen. Guide grooves are opened at the four corners of the bonding plate. The guide grooves cooperate with the guide posts to limit the position of the bonding plate.

4. An improved wind turbine yaw inverter cabinet according to claim 1, characterized in that: The sensor assembly includes a mounting block, on both sides of the upper surface of the mounting block are fixed with elastic clamping plates. The elastic clamping plates are engaged with the connecting groove to limit the position of the mounting block. Both ends of the upper surface of the mounting block are connected to pressing blocks by multiple equally spaced springs. The pressing blocks are in close contact with the lower surface of the mounting frame to improve the clamping effect of the elastic clamping plates.

5. An improved wind turbine yaw inverter cabinet according to claim 4, characterized in that: Both ends of the lower surface of the mounting block are provided with adjustment components, and sensors are installed on the adjustment components. The sensors are one or a combination of temperature sensors and humidity sensors.

6. An improved wind turbine yaw inverter cabinet according to claim 5, characterized in that: The adjusting component includes two placement slots on the lower surface of the mounting block for placing sensors. A groove is formed on one inner wall of each placement slot, and a threaded groove is formed in the middle of the bottom of the groove. The opening of the threaded groove is located at both ends of the mounting block. A pressure plate is provided inside the groove. One end of the pressure plate is used to limit the sensor in the placement slot, and the other end of the pressure plate is movably connected to a screw through a bearing. The screw and the threaded groove are connected through internal and external threads, and a knob is fixed at one end of the screw to drive the screw to rotate.

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