An integrated cabinet for a variable pitch system and a wind turbine

Abstract

The utility model discloses an integrated cabinet and wind turbine unit for variable pitch system, including integrated cabinet body, baffle, battery box and axle control box, the outer contour of integrated cabinet body is hexagonal column, including three long sides and three short sides, the long side and short side alternate setting enclose hexagon, the integrated cabinet body inside is divided into center area and three first installation area and three second installation area along the even distribution of center area outer circle through baffle, and first installation area and second installation area alternate setting, three first installation area is located three short sides respectively, battery box is installed in first installation area inside, axle control box is installed in second installation area inside. The utility model discloses integrated cabinet type design, effectively improves space utilization, reduces installation complexity, and optimization component quality distribution makes overall barycenter more concentrated, and each function box partial modular design is convenient for later stage maintenance, improves operation and maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of wind power generation, and in particular to an integrated cabinet for a pitch control system and a wind turbine generator set. Background Technology

[0002] Pitch technology is widely used in megawatt-class and above wind turbines. By adjusting the blade pitch angle, it optimizes the aerodynamic characteristics of the turbine, thereby improving starting and braking performance and increasing wind energy utilization efficiency. However, existing pitch systems typically employ a separate installation structure for the controller and battery, resulting in complex installation methods, large space occupation, uneven component distribution, affecting the dynamic balance of the hub, inconvenient maintenance and repair, and increased operation and maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an integrated cabinet for a pitch system. The integrated cabinet design highly integrates the controller and the battery, improves space utilization, reduces installation complexity, optimizes the mass distribution of components, makes the overall center of gravity more concentrated, reduces the fatigue load on the hub during wind turbine operation, and the modular design of each functional box facilitates later maintenance, reduces downtime, and improves operation and maintenance efficiency.

[0004] Another objective of this utility model is to provide a wind turbine generator set.

[0005] The objective of this utility model can be achieved by adopting the following technical solutions:

[0006] An integrated cabinet for a pitch system includes an integrated cabinet body, partitions, battery boxes, and shaft control boxes. The outer contour of the integrated cabinet body is a hexagonal prism, including three long sides and three short sides, which are alternately arranged to form a hexagon. The interior of the integrated cabinet body is divided by partitions into a central area and three first mounting areas and three second mounting areas evenly distributed around the periphery of the central area. The first mounting areas and second mounting areas are alternately arranged, and the three first mounting areas are located next to the three short sides. The battery boxes are used to install the batteries of the pitch system, and their number corresponds to the number of the first mounting areas. Each battery box is installed inside a corresponding first mounting area. The shaft control boxes are used to install the controllers of the pitch system, and their number corresponds to the number of the second mounting areas. Each shaft control box is installed inside a corresponding second mounting area.

[0007] Furthermore, the integrated cabinet body is installed inside the hub of the wind turbine unit via a bracket, and its center of gravity coincides with the rotation center of the hub.

[0008] Furthermore, the integrated cabinet body is installed inside the hub in the area near the main shaft end face of the wind turbine, with a distance of more than 500mm between it and the main shaft end face.

[0009] Furthermore, a hoisting opening for hoisting the integrated cabinet is provided on the side of the hub opposite to the end face of the main shaft.

[0010] Furthermore, the axis control box integrates a signal acquisition module, a data processing module, a communication module, and a control module.

[0011] Furthermore, the battery box and the shaft control box are respectively mounted to their respective mounting areas by bolts.

[0012] Furthermore, the integrated cabinet body has three first doors and three second doors. The three first doors are hinged to the three short sides respectively to cover the first installation area. The three second doors are hinged to the three long sides respectively to cover the central area and the three second installation areas. Each door is equipped with a handle.

[0013] Another objective of this utility model can be achieved by adopting the following technical solution:

[0014] A wind turbine generator set includes the integrated cabinet for the pitch system described above.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] 1. System performance optimization

[0017] Integrated design: By highly integrating the components of the pitch system, such as the battery, controller, and communication module, signal transmission loss is reduced, electromagnetic interference resistance is enhanced, and overall reliability is improved.

[0018] High space utilization: The integrated layout saves installation space compared to the split structure, making the internal wiring of the wheel hub simpler and reducing the risk of failure.

[0019] 2. Ease of installation and maintenance

[0020] Simplified hoisting process: The integrated cabinet can be vertically hoisted through the hoisting opening reserved on the top of the hub, avoiding the spatial interference problem of traditional side hoisting and improving installation efficiency.

[0021] Modular maintenance: During maintenance, most of the work can be completed by simply entering through the inspection port on the side of the wheel hub and setting up a ladder; key components (such as batteries and controllers) can be disassembled individually without the need for overall disassembly, reducing downtime.

[0022] 3. Dynamic load and lifespan improvement

[0023] Center of gravity matching design: The integrated cabinet has a uniform mass distribution, and its center of gravity coincides with the impeller rotation center, which reduces the alternating fatigue load on the hub and extends the life of the core components of the fan.

[0024] Vibration suppression: The rigid connection structure reduces operating vibration and avoids bolt loosening or poor electrical contact caused by vibration in the split cabinet.

[0025] 4. Economic advantages

[0026] Reduced operation and maintenance costs: Integrated design reduces the amount of cables and connectors used, saving material costs; shorter maintenance hours further reduce long-term operation and maintenance expenses.

[0027] Wide compatibility: This structure can be adapted to most megawatt-class wind turbine hubs without modifying existing hub structures. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the internal structure of the integrated cabinet of this utility model.

[0029] Figure 2 This is a schematic diagram of the overall structure of the integrated cabinet of this utility model.

[0030] Figure 3 This is an installation diagram of the integrated cabinet of this utility model.

[0031] Figure 4 This is a maintenance diagram of the integrated cabinet of this utility model. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0033] Example 1:

[0034] like Figures 1 to 4As shown, this embodiment provides an integrated cabinet for a pitch system, including an integrated cabinet body 1, a partition 2, a battery box 3, and a shaft control box 4. The outer contour of the integrated cabinet body 1 is a hexagonal prism, including three long sides and three short sides, which are alternately arranged to form a hexagon. The interior of the integrated cabinet body 1 is divided by the partition 2 into a central area 103 and three first installation areas 104 and three second installation areas 105 evenly distributed around the periphery of the central area 103. The first installation areas and second installation areas are alternately arranged, and the three first installation areas are located next to the three short sides. The battery boxes 3 are used to install the batteries of the pitch system, and their number is consistent with the number of the first installation areas and corresponds one-to-one. Each battery box 3 is installed in the corresponding first installation area by bolts. The shaft control box 4 is used to install the controller of the pitch system, and its number is consistent with the number of the second installation areas and corresponds one-to-one. Each shaft control box 4 is installed in the corresponding second installation area by bolts. The spatial distribution of each functional box meets the requirements of mass balance, so that the center of gravity of the cabinet basically coincides with the geometric center, thereby optimizing the dynamic load distribution.

[0035] The integrated cabinet body 1 is mounted inside the wind turbine hub 5 via a high-strength bracket 6. The rigid connection between the high-strength bracket 6 and the hub 5 reduces operating vibration, suppresses vibration transmission, and avoids bolt loosening or poor electrical contact caused by vibration in a separate cabinet, thus improving system reliability. The center of gravity of the integrated cabinet body 1 coincides with the rotation center of the impeller, which can significantly reduce the alternating fatigue load on the hub 5 during wind turbine operation and extend the life of the core components of the wind turbine.

[0036] The integrated cabinet body 1 is installed inside the hub 5 in the area near the end face of the spindle 7. The distance between it and the end face of the spindle is greater than 500mm, which can serve as a maintenance passage. Maintenance personnel can climb into the spindle through the maintenance passage of more than 500mm to perform maintenance work on key components such as bearings and lubrication systems.

[0037] A hoisting opening 501 is provided on the side of the hub 5 opposite to the end face of the main shaft to facilitate the hoisting of the integrated cabinet.

[0038] The axis control box 4 integrates a signal acquisition module, a data processing module, a communication module, and a control module. By highly integrating these modules, signal transmission loss can be effectively reduced, electromagnetic interference resistance can be enhanced, and overall reliability can be improved.

[0039] The integrated cabinet body 1 has three first doors 101 and three second doors 102. The three first doors are hinged to the three short sides respectively to cover the first installation area. The three second doors are hinged to the three long sides respectively to cover the central area and the three second installation areas. Each door is equipped with a handle 106.

[0040] The installation method of the integrated cabinet in this embodiment is as follows:

[0041] 1. Use the end face where the hub connects to the spindle as the mounting reference surface (at this time, it is located on the bottom surface of the hub);

[0042] 2. Through the pre-reserved hoisting opening in the wheel hub (located on the top surface of the wheel hub at this time), the integrated cabinet (without the battery box and shaft control box) and each functional box are hoisted into the wheel hub in sequence. Compared with the traditional side hoisting process, this can effectively reduce the risk of space interference and reduce the difficulty of installation.

[0043] 3. Pre-install the integrated cabinet into the area inside the hub near the main shaft end face using a high-strength bracket to ensure the concentricity of the integrated cabinet and the hub. Install each function box into the corresponding installation area on the integrated cabinet and tighten the integrated cabinet, hub and high-strength bracket with bolts.

[0044] 4. Complete electrical wiring and functional testing to ensure the normal operation of the pitch system.

[0045] During the later maintenance phase, the impeller is locked in a "Y" shape. Using any blade end face as the working reference surface (i.e., the bottom surface), maintenance personnel enter the hub through the pre-reserved inspection port 502 on the side. A ladder can be erected to perform maintenance work on the integrated cabinet. Since the main shaft end face is on the side at this time, there is sufficient space for a maintenance passage between the main shaft end face and the bottom surface of the integrated cabinet. Maintenance personnel can climb through this passage to enter the main shaft for maintenance. If a function box needs to be replaced, the corresponding door can be opened to disassemble the corresponding module individually, without having to dismantle the entire integrated cabinet, significantly reducing downtime.

[0046] Example 2:

[0047] This embodiment provides a wind turbine generator set, including the integrated cabinet for the pitch system described in Embodiment 1.

[0048] The above description is only a preferred embodiment of this utility model patent, but the protection scope of this utility model patent is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in this utility model patent, based on the technical solution and utility model patent concept of this utility model patent, shall fall within the protection scope of this utility model patent.

Claims

1. An integrated cabinet for a pitch system, characterized in that: The system includes an integrated cabinet body, partitions, battery boxes, and shaft control boxes. The integrated cabinet body has a hexagonal prism outer contour, including three long sides and three short sides, which are alternately arranged to form a hexagon. The interior of the integrated cabinet body is divided by partitions into a central area and three first installation areas and three second installation areas evenly distributed around the periphery of the central area. The first installation areas and second installation areas are alternately arranged, and the three first installation areas are located next to the three short sides. The battery boxes are used to install the batteries of the pitch system, and their number corresponds to the number of the first installation areas. Each battery box is installed inside a corresponding first installation area. The shaft control boxes are used to install the controllers of the pitch system, and their number corresponds to the number of the second installation areas. Each shaft control box is installed inside a corresponding second installation area.

2. The integrated cabinet for a pitch system according to claim 1, characterized in that: The integrated cabinet body is installed inside the hub of the wind turbine by a bracket, and its center of gravity coincides with the rotation center of the hub.

3. The integrated cabinet for a pitch system according to claim 2, characterized in that: The integrated cabinet body is installed inside the hub in the area close to the main shaft end face of the wind turbine, with a distance of more than 500mm between it and the main shaft end face.

4. The integrated cabinet for a pitch system according to claim 2, characterized in that: The hub has a hoisting opening on the side opposite to the end face of the main shaft for hoisting the integrated cabinet.

5. The integrated cabinet for a pitch system according to claim 1, characterized in that: The axis control box integrates a signal acquisition module, a data processing module, a communication module, and a control module.

6. The integrated cabinet for a pitch system according to claim 1, characterized in that: The battery box and shaft control box are respectively installed in their respective mounting areas by bolts.

7. The integrated cabinet for a pitch system according to claim 1, characterized in that: The integrated cabinet body includes three first doors and three second doors. The three first doors are hinged to the three short sides respectively to cover the first installation area. The three second doors are hinged to the three long sides respectively to cover the central area and the three second installation areas. Each door is equipped with a handle.

8. A wind turbine generator set, characterized in that, Includes the integrated cabinet for pitch systems described in any one of 1 to 7.

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