CN212567919U

CN212567919U - Wind driven generator gear box simulation test bed

Info

Publication number: CN212567919U
Application number: CN202021038776.XU
Authority: CN
Inventors: 张龙; 王良; 吴荣真; 王建国; 徐天鹏
Original assignee: East China Jiaotong University
Current assignee: East China Jiaotong University
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-02-19
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a aerogenerator gear box analogue test platform, test bench include drive arrangement, wherein mainly include servo motor, gear box, loading device, data acquisition collection dress, data processing apparatus etc.. The test bed is driven by a servo motor, and the gear box is driven to work through a shaft. And (3) simulating the working state of the actual wind driven generator gearbox by utilizing the loading of the hydraulic disc brake. Data are collected through a torque sensor, a speed sensor and an acceleration sensor; and processing and analyzing the collected data by a multichannel analyzer and a PC (personal computer) in the data processing device, and obtaining the dynamic characteristic of the gearbox by using a test algorithm. The simulation test bed has the advantages that the working state of the gearbox of the wind driven generator is reproduced through a test means, vibration signals are collected, the dynamic characteristic of the gearbox is evaluated by utilizing data algorithm analysis, the maintenance cost is reduced for later use, and economic waste is avoided.

Description

Wind driven generator gear box simulation test bed

Technical Field

The utility model relates to a simulation test device especially relates to a aerogenerator gear box working condition analogue test platform.

Background

With the development of society, the consumption of energy is more and more big, and natural energy resources are less and less, so the country especially pays attention to clean energy, especially in the aspect of wind energy, and invests in a large amount of wind driven generators. The existing wind driven generator has the problem of higher cost, and the gear box of the wind driven generator has certain faults due to the fact that the gear box is accelerated to cause the failure of normally reaching the design life because of the change of working load or inevitable errors during installation in the using process of the gear box of the wind driven generator, so that the cost of the wind driven generator is very high. In order to verify the reliability of a gearbox of a wind driven generator and reduce the economic cost of the wind driven generator, data of the dynamic performance of the gearbox needs to be obtained, and life data of the gearbox of the wind driven generator needs to be well predicted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to obtain the dynamic characteristic data of aerogenerator gear box during operation, verify the reliability of gear box to can predict the performance of gear box under the different working conditions.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

in order to achieve the above object, the utility model discloses a technical scheme, aerogenerator gear box analogue test platform, its characterized in that includes a loading device and a drive arrangement. The loading device includes a brake and a sensor. The driving device comprises a motor and a sensor.

The bottom of the motor is fixed at the right end of the workbench through bolts and nuts, and an output shaft of the motor is connected with an input shaft of the bevel gear box in a key connection mode through a coupler. The gear box of the wind driven generator adopts a separated type and is divided into a bevel gear box and a planetary gear box. The oblique gear box is connected with the planetary gear box through a coupler.

The bottom of the hydraulic disc brake is fixed at the right end of the workbench through bolts and nuts, and an output shaft of the hydraulic disc brake is connected with a main shaft of the gear box through a coupler. The torque sensor is arranged on a main shaft of the gear box, and the main shaft penetrates through the torque sensor.

The acceleration sensor is installed in the side of planetary gear box main shaft, uses two acceleration sensors, and the symmetry is installed in the main shaft both sides, guarantees to survey the quality of vibration signal. The photoelectric probe is arranged right below the main shaft and is used for measuring the rotating speed of the main shaft. The sensors are connected with a multi-channel analyzer, and collected signals are input into a PC (personal computer) to be processed.

The loading device adopts a hydraulic disc brake and a torque sensor, is used for the loading device of the test bed, and regulates and controls the load in real time. Furthermore, a potentiometer type torque sensor is selected, so that the torque can be measured in real time, and the applied load can be changed according to the test requirement.

The driving device adopts a servo motor and a speed sensor and is used for the driving device of the test bed, so that the real-time speed regulation function is realized. Furthermore, the servo motor adopts a direct current servo motor, and real-time speed regulation can be realized. The speed sensor adopts a photoelectric probe, can collect the rotating speed information of the gear box in real time, and can realize the function of changing the rotating speed according to the test requirement.

The beneficial effects of the utility model reside in that:

the utility model discloses can simulate the actual working condition of aerogenerator gear box to can real-time speed governing, collect the vibration signal of the during operation of gear box, and have data analysis function, obtain the dynamic characteristic of gear box, can obtain the reliability of gear box. And the dynamic characteristics of the gearbox under different working conditions can be predicted.

Drawings

FIG. 1 is a structural diagram of a simulation test bed for a gearbox of a wind driven generator. The system comprises a hydraulic disc brake 1, a coupler 2, a torque sensor 3, an acceleration sensor 4, a planetary gear 5, a helical gear 6, a coupler 7, a servo motor 8, an inverter 9, a base 10, a photoelectric probe 11, a multichannel analyzer 12 and a PC 13.

FIG. 2 is the structure sketch of the wind driven generator gearbox simulation test bed.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

aerogenerator gear box analogue test platform include: the device comprises a driving device, a gear box, a loading device, a data acquisition device and a data processing device. The driving device adopts the servo motor (8), and the servo motor can accurately control the rotating speed and stably operate. The motor is connected with the oblique gear box (6) by a coupler (7). The gearbox is not an actual wind turbine gearbox, and because the actual gearbox is relatively large in size and relatively high in cost, a similarly configured gearbox is used instead. The wind driven generator gearbox has a 3-stage gear structure, the gearbox adopted by the test bench is also 3 stages, the 1 st stage is a planetary gearbox (5), and the 2 nd and 3 rd stages are bevel gearboxes (6). Because the wind driven generator gearbox simulation test bed cannot be integrated, a separated type is adopted. In order to simulate the working state of the actual wind driven generator gearbox, a hydraulic disc brake (1) is used as a loading device to load the gearbox, and the actual working condition of the gearbox is simulated. Different working conditions can be simulated by changing the applied load and the rotating speed, and more comprehensive dynamic characteristic data can be obtained. A hydraulic disc brake (1) is connected with a main shaft of a planetary gear box (5) by a coupler (2). The torque sensor (3) is arranged on a main shaft connected with the brake and the gear box to measure the applied load in real time.

Vibration is inevitable during the working process of the gearbox of the wind driven generator, and the working state of the gearbox can be well reflected by the vibration signal. And the applied load needs to be changed to simulate different operating conditions. Therefore, an acceleration sensor (4) is selected to measure vibration signals in the working process of the gearbox, a photoelectric probe (11) is used to measure speed information, and a rotary torque sensor (3) is used to measure applied torque load. The measured vibration signals are transmitted to a multi-channel analyzer (12), collected signal samples are led into a PC (13), and dynamic characteristics of the gearbox are analyzed from data samples by utilizing an algorithm.

Claims

1. Aerogenerator gear box analogue test platform, its characterized in that: the device comprises a driving device, a gear box, a loading device, a data acquisition device and a data processing device; the driving device drives a gear pair of the gear box to rotate by utilizing a servo motor (8); the loading device applies load to the gear box by adopting a hydraulic disc brake (1) to simulate actual working load, and the data acquisition device collects signals of the gear box in working conditions by utilizing a torque sensor (3), a photoelectric probe (11) and an acceleration sensor (4); the data processing device leads the acquired data signals into a PC (13), converts the acquired data signals into characteristics reflecting the gear condition by using a designed algorithm, and records the dynamic performance of the gear box in real time.

2. The wind turbine gearbox simulation test stand of claim 1, wherein: the gearbox is not a gearbox of an actual wind turbine; the wind driven generator gear box is provided with a 3-stage gear structure, the 1 st-stage gear pair is a planetary gear structure, and the 2 nd and 3 rd-stage gears are respectively of a helical gear structure; the gear box in the test bed has the same structural design as an actual wind driven generator and also has a 3-stage gear structure, wherein the 1 st stage is a planetary gear box (5), and the 2 nd and 3 rd stages are bevel gear boxes (6).

3. The wind turbine gearbox simulation test stand of claim 1, wherein: the driving device is driven by a servo motor, and can regulate and control the rotating speed in real time.

4. The wind turbine gearbox simulation test stand of claim 1, wherein: the loading device adopts a hydraulic disc brake (1), can apply load to the gear box by changing oil pressure, simulate the load of the gear box under actual working conditions, adjust the applied load, simulate different loads under different working conditions and obtain vibration signals of the gear box under different working conditions.

5. The wind turbine gearbox simulation test stand of claim 1, wherein: the data acquisition device comprises a torque sensor, a rotating speed sensor and a vibration signal sensor; the torque sensor is used for collecting torque signals and can adjust the applied load in real time; the rotating speed sensor adopts a photoelectric probe and can collect rotating speed data of the gearbox in real time; the vibration signal sensors are acceleration sensors, and the two acceleration sensors are arranged on two sides of the main shaft.