Wind generating set vibration signal intelligent acquisition device self-adaptive to environment

Abstract

The utility model provides an environment-adaptive wind generating set vibration signal intelligent acquisition device, and belongs to the technical field of wind generating set vibration monitoring. The problems of poor sensor arrangement flexibility and poor signal transmission stability in existing wind power generation recording vibration monitoring are solved. Comprising a vibration sensor, a charge amplifier, a data acquisition module and a microprocessor which are arranged on a cabin cylinder of the wind generating set, the output end of the vibration sensor is connected with the input end of the charge amplifier, the output end of the charge amplifier is connected with the input end of the data acquisition module, and the output end of the data acquisition module is connected with the microprocessor; wherein tracks are fixed on the inner surface and the outer surface of the cabin cylinder, at least one moving trolley is arranged on the tracks, and the vibration sensors are fixed on the moving trolleys; the vibration monitoring device is applied to vibration monitoring of the wind generating set.

Description

Technical Field

[0001] This invention provides an intelligent vibration signal acquisition device for wind turbine generator sets that is adaptive to the environment, belonging to the field of wind turbine generator set vibration monitoring technology. Background Technology

[0002] Wind turbines, as a crucial component of renewable energy, are widely used in energy production globally. During operation, vibration signals from wind turbines often reflect their operating status, health condition, and potential fault warnings. Therefore, real-time monitoring and intelligent analysis of wind turbine vibration signals are essential for ensuring efficient operation, extending service life, and reducing maintenance costs. Vibration monitoring technology, a common method for mechanical fault diagnosis, has been widely applied to the health monitoring and fault diagnosis of wind turbines.

[0003] Traditional wind turbine vibration monitoring technology primarily employs a fixed sensor array arrangement. Vibration sensors are deployed at different locations within the turbine to acquire vibration signals. These sensors are typically fixed in predetermined positions, such as the nacelle, blades, and bearings, to monitor the vibration state of the wind turbine during operation. This traditional method suffers from several problems:

[0004] The sensor placement lacks flexibility: because the sensors are fixed in certain specific locations, it is difficult to flexibly adjust their positions according to changes in equipment status and environment. This approach has significant limitations in actual operation, especially during the maintenance and adjustment phases after long-term operation of wind turbine generators.

[0005] Traditional systems typically rely on wired connections for signal transmission, which can be affected by environmental interference, damage to transmission lines, and other factors, resulting in poor stability of signal acquisition and transmission. Utility Model Content

[0006] To address the issues of poor sensor placement flexibility and signal transmission stability in existing wind power generation vibration monitoring, this invention proposes an environmentally adaptive intelligent vibration signal acquisition device for wind turbine generators. By introducing a vibration sensor placement method controlled by a track and a mobile trolley, it overcomes the limitations of fixed sensor positions and a single placement method in traditional technologies.

[0007] The technical solution adopted by this utility model is as follows: an intelligent acquisition device for vibration signals of wind turbine generator set that is adaptive to the environment, including a vibration sensor, a charge amplifier, a data acquisition module and a microprocessor installed on the nacelle of the wind turbine generator set. The output end of the vibration sensor is connected to the input end of the charge amplifier, the output end of the charge amplifier is connected to the input end of the data acquisition module, and the output end of the data acquisition module is connected to the microprocessor.

[0008] The inner and outer surfaces of the nacelle are fixed with rails, and at least one moving trolley is installed on the rails. Vibration sensors are fixed on the moving trolleys.

[0009] Furthermore, the inner and outer tracks form a ring structure. Multiple sets of external vibration sensors are installed on the track located on the outer side of the nacelle tube, and multiple sets of internal vibration sensors are installed on the track located on the inner side of the nacelle tube. The external and internal vibration sensors are slidably distributed on the tracks by corresponding moving trolleys.

[0010] Furthermore, control points are set on the track to mark the installation positions of the sensors.

[0011] Furthermore, multiple sets of external vibration sensors and multiple sets of internal vibration sensors are installed on the track in the form of a ring array or in a centralized distribution.

[0012] Furthermore, the data acquisition module includes a wireless communication module, through which the microprocessor communicates wirelessly with the environmental monitoring host computer.

[0013] Furthermore, the mobile vehicle is controlled by an electric drive, a stepper motor, or a hydraulic system.

[0014] Furthermore, it also includes lithium batteries and wireless charging modules.

[0015] The advantages of this utility model over the prior art are as follows:

[0016] 1. External and internal vibration sensors are slidably distributed on tracks installed on the inner and outer surfaces of the nacelle via a moving trolley. The sensor arrangement can be dynamically adjusted according to actual needs, such as in a ring array or centralized distribution, greatly improving the flexibility of monitoring deployment. This can meet the monitoring requirements of different wind turbine operating states and environmental conditions.

[0017] 2. The mobile trolley carries sensors along a track and solves the instability problem of traditional wired connections by combining a wireless communication module (Zigbee) and wireless charging technology. The wireless communication module avoids the limitations of wired connections and improves the stability of signal transmission, while wireless charging technology ensures the long-term stable operation of the sensors. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a flowchart of the data acquisition process for this utility model;

[0020] Figure 2 A block diagram showing the sensor arrangement of this utility model;

[0021] Figure 3 This is a flowchart illustrating the communication between the hardware devices of this utility model.

[0022] Figure 4 This is a schematic diagram showing the distribution of the internal and external vibration sensors of this utility model;

[0023] In the diagram: 1 is the engine compartment tube, 2 is the track, 3 is the external vibration sensor, and 4 is the internal vibration sensor. Detailed Implementation

[0024] like Figures 1 to 4 As shown, this utility model provides an intelligent vibration signal acquisition device for wind turbine generator sets that adapts to the environment. It includes a vibration sensor, a charge amplifier, a data acquisition module, and a microprocessor. The output of the vibration sensor is connected to the input of the charge amplifier, the output of the charge amplifier is connected to the input of the data acquisition module, and the output of the data acquisition module is connected to the input of the microprocessor. Multiple vibration sensors can be configured, allowing for the installation of multiple charge amplifiers and data acquisition modules to amplify and sample the acquired electrical signals.

[0025] The vibration sensors are installed on the outer surface and inner wall of the nacelle 1 of the wind turbine generator being tested, and are connected by rails 2. The rails 2 control the arrangement of multiple vibration sensors in different ways, such as a ring array, centralized distribution, etc.

[0026] like Figure 4 As shown, rails 2 are fixedly installed on both the outer and inner surfaces of the heavy-duty engine compartment 1. Multiple sets of external vibration sensors 3 are installed on the rails 2 located on the outer side of the engine compartment 1, and multiple sets of internal vibration sensors 4 are installed on the rails 2 located on the inner side of the engine compartment 1. The rails 2 are circular structures, and mobile trolleys for fixing and adjusting the position of the sensors are set on both the inner and outer rails 2. The mobile trolleys can slide on the rails. The external vibration sensors 3 and internal vibration sensors 4 are slidably distributed on the rails 2 by the corresponding mobile trolleys. The rails 2 are equipped with control points, which allow the mobile trolleys to precisely stop at specific positions with the external vibration sensors 3 and internal vibration sensors 4. The mobile trolleys are controlled by electric drive, stepper motor or hydraulic system to move along the rails 2 along a predetermined path to complete the arrangement of vibration sensors.

[0027] The vibration sensors are moved by a mobile trolley in conjunction with track 2, allowing for easy adjustment of the sensor arrangement based on factors such as construction progress, equipment status, and environmental conditions. This method significantly improves the flexibility and adaptability of signal acquisition, both during initial installation and subsequent maintenance.

[0028] Since the vibration sensors on the mobile vehicle need to collect and transmit data in real time, ensuring stable electrical connections and unimpeded communication is crucial. This invention uses a wireless communication module (Zigbee) and wireless charging to solve the power supply and signal transmission problems, improving the stability of vibration signal acquisition. The wireless communication module enables wireless communication between the device and an environmental monitoring host computer, which can then adjust the sensor placement.

[0029] The vibration signal of the cabin cylinder 1 is collected and converted into a charge signal, which is then output to a charge amplifier. The charge amplifier amplifies the input charge signal twice: first by charge amplification and then by arithmetic operation. This amplification is then further processed by an operational amplifier circuit, resulting in a voltage signal of a certain amplitude. The data acquisition module samples the voltage signal output from the charge amplifier and transmits the sampled data to a microprocessor. The microprocessor has built-in mature data processing and analysis algorithms to process and analyze the collected vibration sensor data, thereby providing early warning of anomalies or faults. Mature data processing algorithms can include median filtering and interpolation, while data analysis algorithms can include mature empirical mode decomposition (EMD), variational mode decomposition (VMD), or machine learning algorithms such as cluster analysis, classification algorithms, and time series analysis. This invention does not limit or modify these algorithms, as long as they can be used for sensor data processing and analysis.

[0030] This invention amplifies vibration signals multiple times using a charge amplifier and collects data in real time via a data acquisition module. A microprocessor is then used for analysis and fault warning. This automated and intelligent signal acquisition and monitoring mechanism not only improves acquisition accuracy but also avoids false data due to equipment malfunctions or external interference, ensuring the accuracy of wind turbine fault monitoring and health status assessment.

[0031] This utility model device has high acquisition accuracy, can adapt to changes in the working environment, realizes intelligent signal acquisition, and can effectively monitor the acquired data in real time, avoiding false data caused by acquisition system failure, and can ensure the accuracy of wind turbine generator fault monitoring and operational health status assessment results.

[0032] Regarding the specific structure of this utility model, it should be noted that the connection relationships between the various component modules adopted in this utility model are definite and achievable. Except as specifically described in the embodiments, their specific connection relationships can bring about corresponding technical effects and solve the technical problems proposed by this utility model without relying on the execution of corresponding software programs. The models of the components, modules, and specific components appearing in this utility model, the connection methods between them, and the conventional usage methods and expected technical effects brought about by the above-mentioned technical features, unless specifically described, are all publicly disclosed content in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by those skilled in the art before the application date, or belong to conventional technology, common knowledge, and other existing technologies in this field. There is no need to elaborate, which makes the technical solution provided in this case clear, complete, and achievable, and can reproduce or obtain corresponding physical products based on this technical means.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An intelligent vibration signal acquisition device for wind turbine generator sets that adapts to different environments, characterized in that: It includes a vibration sensor, a charge amplifier, a data acquisition module, and a microprocessor installed on the nacelle of the wind turbine generator. The output of the vibration sensor is connected to the input of the charge amplifier, the output of the charge amplifier is connected to the input of the data acquisition module, and the output of the data acquisition module is connected to the microprocessor. The inner and outer surfaces of the nacelle are fixed with rails, and at least one moving trolley is installed on the rails. Vibration sensors are fixed on the moving trolleys.

2. The adaptive environment wind turbine generator vibration signal intelligent acquisition device according to claim 1, characterized in that: The inner and outer tracks form a ring structure. Multiple sets of external vibration sensors are installed on the track located on the outer side of the nacelle tube, and multiple sets of internal vibration sensors are installed on the track located on the inner side of the nacelle tube. The external and internal vibration sensors are slidably distributed on the tracks by corresponding moving trolleys.

3. The adaptive environment wind turbine generator vibration signal intelligent acquisition device according to claim 2, characterized in that: The track is equipped with control points to mark the installation positions of the sensors.

4. The intelligent vibration signal acquisition device for an adaptive wind turbine generator set according to claim 2, characterized in that: Multiple sets of external vibration sensors and multiple sets of internal vibration sensors are installed on the track in the form of a ring array or in a centralized distribution.

5. The intelligent vibration signal acquisition device for an adaptive wind turbine generator set according to claim 1, characterized in that: The data acquisition module includes a wireless communication module, through which the microprocessor communicates wirelessly with the environmental monitoring host computer.

6. The adaptive environment wind turbine generator vibration signal intelligent acquisition device according to claim 2, characterized in that: The mobile trolley is controlled by electric drive, stepper motor or hydraulic system.

7. The adaptive environment wind turbine generator vibration signal intelligent acquisition device according to claim 5, characterized in that: It also includes lithium batteries and wireless charging modules.

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