Wind power brake life test bench

Abstract

The utility model discloses a kind of wind power brake life test benches, including rack body and inertia disc assembly and drive component of driving the inertia disc assembly rotation installed on the rack body, brake component for adjusting the speed of the inertia disc assembly;The inertia disc assembly includes inertia disc and test disc with the rotation connection of the drive component, and the test disc is used to connect the wind power brake to be tested;The brake component includes at least two groups of pneumatic element installed on the rack body and brake disc arranged at the output end of the pneumatic element, and several groups of brake block are equipped on the brake disc;The drive component includes electric element installed on the rack body and several groups of drive block installed at the output end of the electric element, and accommodating groove accommodating the drive block is equipped on the inertia disc.The utility model can simulate a variety of complex working conditions, can simulate inertia impact of emergency stop, good compatibility, and can match different power level fan.

Description

Technical Field

[0001] This utility model belongs to the field of brake technology, specifically relating to a wind power brake life test bench. Background Technology

[0002] With the global energy structure shifting towards cleaner energy, wind power has become one of the fastest-growing renewable energy sources. As of 2023, the global cumulative installed wind power capacity exceeded 900GW, with the large-scale application of offshore wind power and onshore wind turbines with a capacity of 10MW or more placing higher demands on equipment reliability. The core braking system of wind turbine generators needs to operate stably under high wind speeds, frequent start-stop cycles, and extreme load conditions; its lifespan directly affects the safety and maintenance costs of the turbine. However, the trend towards larger wind turbines has led to a significant increase in the inertial load on the brakes, making it difficult for traditional design standards and laboratory testing methods to accurately simulate actual operating conditions. This results in frequent problems such as early wear and fatigue fracture of the brakes. According to industry statistics, braking system failures account for more than 15% of unplanned wind turbine shutdowns, with annual maintenance costs exceeding one million US dollars per wind farm, highlighting the urgent need for high-precision life testing technology.

[0003] Currently, wind turbine brake life testing mainly relies on two types of technologies: one is a static test bench based on hydraulic loading, which simulates braking load by applying constant pressure through hydraulic cylinders, but cannot reproduce the dynamic inertial load characteristics of the wind turbine drive chain; the other is a simplified dynamic test device using direct motor drive, which can simulate some operating conditions, but is limited by the motor torque response speed and inertia simulation accuracy, making it difficult to match the complex operating parameters of wind turbines of different power levels. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A wind turbine brake life test bench includes a frame body, an inertia disk assembly mounted on the frame body, a drive assembly for driving the inertia disk assembly to rotate, and a braking assembly for adjusting the speed of the inertia disk assembly.

[0006] The inertia disk assembly includes an inertia disk and a test disk that are rotatably connected to the drive assembly. The inertia disk and the test disk are fixedly connected. The test disk is used to connect the wind turbine brake to be tested.

[0007] The braking assembly includes at least two sets of pneumatic components mounted on the frame body and a brake disc disposed at the output end of the pneumatic components. The brake disc is provided with several sets of brake blocks, and the top surface of the brake blocks is higher than the top surface of the brake disc. When the brake blocks are close to the test disc, the rotational speed of the inertia disc can be adjusted.

[0008] The drive assembly includes an electric component mounted on the frame body and several sets of drive blocks mounted on the output end of the electric component. The inertia disk is provided with a receiving groove for accommodating the drive blocks, and the width of the receiving groove is greater than the width of the drive blocks.

[0009] Furthermore, the inertia disk is provided with several sets of fixing slots, which are used to fix and connect the weight-adding blocks.

[0010] Furthermore, the inertia disk and the test disk are connected as a whole by fasteners, and bearings are provided at the axis of the inertia disk and the test disk. The output end of the electric component is rotatably connected to the inertia disk through the bearings.

[0011] Furthermore, several of the receiving slots are evenly arranged along the circumference of the inertia disk axis, and the depth of the receiving slots matches the height of the drive block.

[0012] Furthermore, the fastener is a screw.

[0013] Furthermore, the pneumatic component is a cylinder.

[0014] Furthermore, the electric component is a motor.

[0015] The beneficial effects of this utility model are:

[0016] In this invention, the inertia disk is only rotatably connected to the drive assembly, and the drive assembly is connected to the inertia disk using a drive block. Moreover, the receiving groove of the inertia disk accommodating the drive block is larger than the drive block. Therefore, when the drive block rotates, it will instantly drive the inertia disk to rotate after a certain delay, causing the inertia disk to generate an instantaneous impact force. When stopping, the inertia disk will also stop abruptly after a certain delay. At this time, only the brake to be tested needs to be installed on the test disk to simulate the start-up and shutdown of the generator set and extreme working conditions, thereby improving the simulation accuracy of complex working conditions. In addition, the inertia disk is provided with several fixed slots. By fixing weight blocks of different masses to the fixed slots, different inertia levels can be adjusted to match wind turbines of different power levels.

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the drive component structure of this utility model;

[0020] Figure 3This is a schematic diagram of the braking assembly structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the inertia disk structure of this utility model (red represents the receiving groove);

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Frame body; 2. Inertia disk assembly; 21. Inertia disk; 211. Fixing slot; 212. Receiving slot; 22. Test disk; 3. Braking assembly; 31. Pneumatic component; 32. Brake disk; 33. Brake block; 4. Drive assembly; 41. Electric component; 42. Drive block. Detailed Implementation

[0024] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention. Specific implementation examples:

[0026] like Figures 1 to 4 The wind turbine brake life test bench shown includes a frame body 1, an inertia disk assembly 2 mounted on the frame body 1, a drive assembly 4 for driving the inertia disk assembly 2 to rotate, and a brake assembly 3 for adjusting the speed of the inertia disk assembly 2.

[0027] The inertia disk assembly 2 includes an inertia disk 21 and a test disk 22 rotatably connected to the drive assembly 4. The inertia disk 21 and the test disk 22 are fixedly connected, and the test disk 22 is used to connect the wind turbine brake to be tested. Considering matching different brakes and compatibility, the inertia disk 21 is provided with several sets of fixing slots 211, which are used to fix and connect weight blocks. Preferably, the inertia disk 21 and the test disk 22 are connected as a whole by fasteners, and bearings are provided at the axis of the inertia disk 21 and the test disk 22. The output end of the electric component 41 is rotatably connected to the inertia disk 21 through the bearings. Preferably, the fasteners are screws.

[0028] The braking assembly 3 includes at least two sets of pneumatic elements 31 mounted on the frame body 1 and a brake disc 32 disposed at the output end of the pneumatic elements 31. The brake disc 32 is provided with several sets of brake blocks 33. The top surface of the brake blocks 33 is higher than the top surface of the brake disc 32. When the brake blocks 33 are close to the test disc 22, the rotational speed of the inertia disc 21 can be adjusted. The pneumatic element 31 is a cylinder.

[0029] The drive assembly 4 includes an electric component 41 mounted on the frame body 1 and several sets of drive blocks 42 mounted on the output end of the electric component 41. The inertia disk 21 has a receiving groove 212 for accommodating the drive blocks 42, the width of which is greater than the width of the drive blocks 42. The purpose of the receiving groove being larger than the drive block is to simulate instantaneous impact force. When the drive blocks stop and turn abruptly, the receiving groove will cause a delay in the sudden stop and turn, thus generating an instantaneous impact force. Several receiving grooves 212 are evenly arranged along the circumference of the inertia disk 21, and the depth of the receiving groove 212 matches the height of the drive blocks 42. The electric component 41 is a motor.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A wind turbine brake life testing bench, characterized in that: It includes a frame body (1), an inertia disk assembly (2) mounted on the frame body (1), a drive assembly (4) for driving the inertia disk assembly (2) to rotate, and a braking assembly (3) for adjusting the speed of the inertia disk assembly (2). The inertia disk assembly (2) includes an inertia disk (21) and a test disk (22) rotatably connected to the drive assembly (4). The inertia disk (21) and the test disk (22) are fixedly connected. The test disk (22) is used to connect the wind power brake to be tested. The braking assembly (3) includes at least two sets of pneumatic elements (31) mounted on the frame body (1) and a brake disc (32) disposed at the output end of the pneumatic elements (31). The brake disc (32) is provided with several sets of brake blocks (33). The top surface of the brake block (33) is higher than the top surface of the brake disc (32). When the brake block (33) is close to the test disc (22), the rotation speed of the inertia disc (21) can be adjusted. The drive assembly (4) includes an electric element (41) mounted on the frame body (1) and a number of drive blocks (42) mounted on the output end of the electric element (41). The inertia disk (21) is provided with a receiving groove (212) for accommodating the drive block (42). The width of the receiving groove (212) is greater than the width of the drive block (42).

2. The wind turbine brake life test bench according to claim 1, characterized in that: The inertia disk (21) is provided with several sets of fixing slots (211), which are used to fix and connect the weight-adding blocks.

3. The wind turbine brake life test bench according to claim 1, characterized in that: The inertia disk (21) and the test disk (22) are connected by fasteners to form an integral whole. Bearings are provided at the axis of the inertia disk (21) and the test disk (22). The output end of the electric component (41) is rotatably connected to the inertia disk (21) through the bearings.

4. The wind turbine brake life test bench according to claim 3, characterized in that: Several of the receiving slots (212) are evenly arranged around the circumference of the inertia disk (21), and the depth of the receiving slots (212) matches the height of the drive block (42).

5. A wind turbine brake life testing bench according to claim 3, characterized in that: The fastener is a screw.

6. The wind turbine brake life test bench according to claim 1, characterized in that: The pneumatic component (31) is a cylinder.

7. The wind turbine brake life test bench according to claim 1, characterized in that: The electric component (41) is a motor.

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