A method, device, equipment and storage medium for judging the slip state of a coupling

Abstract

The present application discloses a method for judging the slip state of a coupling, which relates to the technical field of wind turbine generator systems. The method comprises: continuously acquiring a target image of the coupling; determining the slip angle of the coupling based on the target image; if the slip angle is less than a preset angle, accumulating the number of slips and the slip angle of the coupling; when the cumulative number of slips or the slip angle reaches a preset value, determining that a torque transmission failure has occurred in the coupling. By using this method to judge the working state of the coupling, the fault can be accurately judged, and the slip angle can be quantified, which can accurately judge and warn of early slip. The present application also provides a coupling slip state judgment device, equipment and computer-readable storage medium, which have the above-mentioned beneficial effects.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation groups, and in particular to a method, device, equipment and storage medium for determining the slipping state of a coupling. Background Art

[0002] Wind turbines convert wind energy into mechanical energy, which is then converted into electrical energy, ultimately feeding the electrical energy into the power grid. In a doubly-fed wind turbine, a coupling connects the gearbox output shaft to the generator input shaft, transmitting the gearbox's output torque to the generator, driving its rotation. The coupling is a critical component in the wind turbine's drive train, and its performance directly impacts its operation. Because wind turbines typically operate in harsh environments and complex operating conditions, the coupling must balance the excess energy generated by external load fluctuations under conditions such as high speed, heavy loads, vibration, variable torque, and repeated starts, ensuring continuous and smooth transmission of torque and motion between the two shafts. However, due to various mechanical and electrical system issues, wind turbine couplings can frequently slip. When the cumulative slip exceeds a certain angle, the coupling's torque limiter wears out, degrading torque transmission performance and ultimately failing to continuously transmit torque, necessitating prompt replacement.

[0003] In related technologies, the coupling slippage status is mostly determined by comparing the speed difference between the gearbox and the generator, as well as by monitoring the current temperature of the coupling and sending the acquired current temperature to the controller; the controller determines whether the coupling is slipping based on the current temperature sent by the temperature sensor. This indirect method of judging the working status of the coupling results in inaccurate fault judgment, occasional false alarms, inability to quantify the slip angle, and inability to accurately judge and warn of early slippage.

[0004] Therefore, how to provide a method that can quantify the slip angle and slip frequency of the coupling, realize full monitoring of the slip process, accurately judge and warn of early slip, and at the same time estimate the service life of the coupling is an urgent problem that technical personnel in this field need to solve. Summary of the Invention

[0005] The purpose of this application is to provide a method, device, equipment and computer-readable storage medium for judging the slip state of a coupling. The method can accurately judge the fault, quantify the slip angle, and accurately judge and warn of early slip.

[0006] To achieve the above objectives, the present application provides a method for determining the slip state of a coupling, the specific scheme of which is as follows:

[0007] Continuously acquire target images of the coupling;

[0008] determining a slip angle of the coupling according to the target image;

[0009] If the slip angle is less than a preset angle, the number of slips and the slip angle of the coupling are accumulated;

[0010] When the accumulated number of slips or the accumulated slip angle reaches a preset value, it is determined that a torque transmission failure occurs in the coupling.

[0011] Optionally, determining the slip angle of the coupling according to the target image includes:

[0012] Determining a starting position of an image for this slip detection, and acquiring a latest image from the continuously acquired target images based on the starting position of the image;

[0013] The slip angle of the coupling is determined by comparing the starting position of the image with the slip mark of the coupling.

[0014] Optionally, determining the image starting position for this slip detection includes:

[0015] The end position of the target image during the previous slip detection is determined as the image start position for this slip detection.

[0016] Optionally, after determining that the coupling has a torque transmission failure, the method further includes:

[0017] Send an alarm signal.

[0018] Optionally, after determining the slip angle of the coupling according to the target image, the method further includes:

[0019] If the slip angle reaches a preset angle, detecting whether a torque transmission failure occurs in the coupling;

[0020] If no fault occurs, the process proceeds to the step of accumulating the number of slips and the slip angle of the coupling.

[0021] The present application also provides a coupling slip state judgment device, comprising:

[0022] an acquisition module, for continuously acquiring a target image of the coupling;

[0023] a determination module, configured to determine a slip angle of the coupling according to the target image;

[0024] an accumulation module, configured to accumulate the number of slips and the slip angle of the coupling if the slip angle is less than a preset angle;

[0025] The determination module is configured to determine that a torque transmission failure occurs in the coupling when the cumulative number of slip times or the cumulative slip angle reaches a preset value.

[0026] Optionally, the determining module includes:

[0027] a capture unit, configured to determine a starting position of an image for the current slip detection, and to acquire a latest image from the continuously acquired target images based on the image starting position;

[0028] A comparison unit is used to determine the slip angle of the coupling by comparing the starting position of the image with the slip mark of the coupling.

[0029] Optionally, the device further includes:

[0030] The alarm module is used to send an alarm signal.

[0031] The present application also provides a coupling slip state judgment device, comprising:

[0032] memory for storing computer programs;

[0033] The processor is used to execute the computer program to implement the steps of the coupling slip state judgment method as described above.

[0034] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the coupling slip state determination method as described above are implemented.

[0035] Obviously, the present application provides a method for judging the slip state of a coupling, which includes: continuously acquiring a target image of the coupling; determining the slip angle of the coupling based on the target image; if the slip angle is less than a preset angle, accumulating the number of slips and the slip angle of the coupling; when the cumulative number of slips or the slip angle reaches a preset value, determining that a torque transmission failure has occurred in the coupling. By using this method to judge the working state of the coupling, the fault can be accurately judged, and the slip angle can be quantified, which can accurately judge and warn of early slip. The present application also provides a coupling slip state judgment device, equipment and computer-readable storage medium, which have the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0037] Figure 1 A flow chart of a method for determining a coupling slipping state provided in an embodiment of the present application;

[0038] Figure 2 This is a structural block diagram of a coupling slip state judgment device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] In the related art, the coupling slip state is often judged by comparing the speed difference between the gearbox and the generator, and by monitoring the current temperature of the coupling and sending the acquired current temperature to the controller; the controller determines whether the coupling is slipping based on the current temperature sent by the temperature sensor. This indirect method is used to judge the working state of the coupling, resulting in inaccurate fault judgment, occasional false alarms, inability to quantify the slip angle, and inability to accurately judge whether the coupling has slipped, let alone accurately judge and warn of early slip. The present application provides a coupling slip state judgment method, which includes: continuously acquiring a coupling target image; determining the coupling slip angle based on the target image; if the slip angle is less than a preset angle, accumulating the number of slips and the slip angle of the coupling; when the number of slips or the accumulated slip angle reaches a preset value, it is determined that the coupling has a torque transmission fault. By using this method to judge the working state of the coupling, faults can be accurately judged, and the slip angle can be quantified, so that early slips can be accurately judged and warned. For details, please refer to Figure 1 , Figure 1 A flowchart of a method for determining a coupling slip state provided in an embodiment of the present application may include the following steps:

[0041] S101: Continuously acquiring a target image of the coupling.

[0042] The execution subject of this application is any electronic device that has the function of determining the slip state of the coupling, such as a desktop computer, a tablet computer, etc.

[0043] This embodiment does not limit the specific method of obtaining the target image of the coupling, and the user can obtain it according to the actual situation. Specifically, this application fixes an industrial camera directly below the coupling, and uses a light source to project the light source light onto the coupling connection by adopting a forward lighting method, and continuously obtains the target image of the coupling connection, so that the coupling and the background can be distinguished as clearly as possible. Furthermore, this embodiment does not limit the specific type of light source selected, and the user can select it according to the actual situation. For example, you can choose a high-pressure sodium lamp light source, an energy-saving lamp light source, a fluorescent lamp light source, an LED (Light Emitting Diode) light source, etc. Specifically, this application chooses to use an LED light source.

[0044] Furthermore, after acquiring the target image of the coupling, the target image is converted into electrical signals by an optical sensor. These electrical signals are then converted into digital image signals of a predetermined format by an image acquisition device. The digital image signals are then transmitted to an image processing device, where the machine vision equipment on the image processing device processes and analyzes the image data. This embodiment does not limit the specific content of the digital image signal; for example, it may include pixel distribution, brightness, and color, which the user can configure based on specific needs. Furthermore, this embodiment does not limit the specific type of image processing device used; for example, a personal computer (PC) or other embedded hardware device can be used. The user can select the appropriate type based on specific circumstances. Furthermore, this embodiment does not limit the specific process for processing and analyzing the image data. For example, the image data can be subjected to processes such as image enhancement, image segmentation, edge extraction, feature extraction, and image recognition. The user can process and analyze the image data based on specific needs.

[0045] S102: Determine a slip angle of the coupling according to the target image.

[0046] The present application determines the image starting position of this slip detection, obtains the latest image from the continuously acquired target images based on the image starting position; and determines the slip angle of the coupling by comparing the image starting position with the slip mark of the coupling. Among them, the end position of the target image during the last slip detection is determined as the image starting position of this slip detection. Furthermore, the present embodiment does not limit the specific number of multiple image marks uniformly set at the coupling connection, and the user can set it according to specific needs. Specifically, the present application uniformly sets 12 image marks at the coupling connection, the image marks are symmetrical on the left and right, and the half-side image marks are different, and the angle between each two adjacent image marks is 30°.

[0047] S103: If the slip angle is less than the preset angle, the slip times and the slip angle of the coupling are accumulated.

[0048] This embodiment does not limit the size of the preset angle, and the user can set and modify it according to actual conditions. Specifically, this application sets the preset angle to 60°. If the slip angle is less than the preset angle, a small slip count and a slip angle are recorded, and the slip count and slip angle of the coupling are accumulated; if the slip angle reaches the preset angle, the coupling is detected to see if a torque transmission failure occurs; if the coupling does not have a torque transmission failure, a continuous slip count and a continuous slip angle are recorded, and the step of accumulating the slip count and slip angle of the coupling is entered.

[0049] S104: When the accumulated number of slips or the accumulated slip angle reaches a preset value, it is determined that a torque transmission failure occurs in the coupling.

[0050] This embodiment does not limit the preset values ​​of the cumulative number of slips and slip angles, and users can set them according to actual conditions. Specifically, under laboratory conditions, this application tests the coupling for non-continuous slipping of 60° each time. After 1,000 slips, the performance of the coupling decreases by 15%. When the performance of the coupling decreases by about 40%, the coupling will not be able to guarantee the torque transmission between the gearbox and the generator. As long as at least one of the slip number and slip angle reaches the preset value, it is determined that the coupling has a torque transmission failure. Therefore, this application accurately records the slip number and slip angle of the coupling, accurately judges the operation state of the coupling, and can predict the torque transmission and service life of the coupling.

[0051] Furthermore, upon determining that a torque transmission failure has occurred in the coupling, an alarm signal is sent. This embodiment does not limit the specific method of sending the alarm signal; for example, the alarm may be sent via voice or by changing the color of a light. Users can configure this based on their specific needs and practical scenarios.

[0052] Based on the above technical solution, the present application provides a method for determining the coupling slippage status. This method continuously acquires a target image of the coupling; determines the coupling slip angle based on the target image; accumulates the number of coupling slips and the slip angle if the slip angle is less than a preset angle; and determines that a torque transmission failure has occurred in the coupling when the accumulated number of slips or the slip angle reaches a preset value. This method, which accurately determines the coupling's operating status, can quantify the slip angle, enabling accurate identification and early warning of slippage.

[0053] Based on the above embodiment, in order to further improve the efficiency and accuracy of judging the slip state of the coupling, after determining the slip angle of the coupling according to the target image, the method further includes:

[0054] If the slip angle reaches a preset angle, the coupling is checked for torque transmission failure;

[0055] If no fault occurs, the process proceeds to the step of accumulating the number of slips and the slip angle of the coupling.

[0056] The following is a specific example to illustrate the above process. In this example, the coupling slip state judgment device is a desktop computer. The specific process is as follows:

[0057] 1. Continuously acquire the target image of the coupling;

[0058] 2. Process and analyze the target image of the coupling;

[0059] 3. Determine the image starting position for this slip detection, and obtain the latest image from the continuously acquired target images based on the image starting position;

[0060] 4. Determine the slip angle of the coupling by comparing the starting position of the image with the slip mark of the coupling;

[0061] 5. Determine whether the coupling slip angle reaches the preset angle;

[0062] 6. If the slip angle is less than the preset angle, the number of slips and the slip angle of the coupling are accumulated; when the cumulative number of slips or the slip angle reaches the preset value, it is determined that the coupling has a torque transmission failure;

[0063] 7. If the slip angle reaches a preset angle, the coupling is checked for torque transmission failure; if no failure occurs, the step of accumulating the number of slips and the slip angle of the coupling is entered;

[0064] 8. Send an alarm signal.

[0065] The following is an introduction to a coupling slip state judgment device, equipment and computer-readable storage medium provided in an embodiment of the present application. The coupling slip state judgment device, equipment and computer-readable storage medium described below can be referenced to each other with the coupling slip state judgment method described above.

[0066] Please refer to Figure 2 , Figure 2 This is a structural block diagram of a coupling slip state judgment device provided in an embodiment of the present application. The device may include:

[0067] an acquisition module 110, configured to continuously acquire a target image of the coupling;

[0068] a determination module 120 for determining a slip angle of the coupling according to the target image;

[0069] an accumulation module 130, configured to accumulate the number of slips and the slip angle of the coupling if the slip angle is less than a preset angle;

[0070] The determination module 140 is configured to determine that a torque transmission failure occurs in the coupling when the accumulated number of slip times or the accumulated slip angle reaches a preset value.

[0071] Based on the above embodiment, the determination module 120 includes:

[0072] A capture unit is used to determine the image starting position of this slip detection, and obtain the latest image from the continuously acquired target images based on the image starting position;

[0073] The comparison unit is used to determine the slip angle of the coupling by comparing the starting position of the image with the slip mark of the coupling.

[0074] Based on the above embodiment, the interception unit may be a unit configured to determine the end position of the target image during the previous slip detection as the start position of the image during the current slip detection.

[0075] Based on the above embodiment, the device may further include:

[0076] The alarm module is used to send an alarm signal.

[0077] Based on the above embodiment, the device may further include:

[0078] The detection module is used to detect whether a torque transmission failure occurs in the coupling if the slip angle reaches a preset angle; if no failure occurs, the step of accumulating the number of slips and the slip angle of the coupling is entered.

[0079] Based on the above embodiments, the present application further provides a coupling slippage state determination device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor invokes the computer program in the memory, the steps provided in the above embodiments can be implemented. Of course, the device may also include various necessary network interfaces, a power supply, and other components.

[0080] The present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by an execution terminal or processor, can implement the steps provided in the above embodiment. The storage medium may include: a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc., various media that can store program code.

[0081] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the various embodiments are in a progressive relationship. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the devices disclosed in the embodiments, please refer to the corresponding method section description. The description of the above embodiments is only used to help understand the method of the present application and its core idea. For ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0082] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A method for judging the slipping state of a coupling, characterized in that: include: Continuously acquire target images of the coupling; determining a slip angle of the coupling according to the target image; If the slip angle is less than a preset angle, the number of slips and the slip angle of the coupling are accumulated respectively; When the cumulative number of slips or the cumulative slip angle reaches a preset value, it is determined that a torque transmission failure occurs in the coupling; Wherein, determining the slip angle of the coupling according to the target image includes: Determining the end position of the target image during the last slip detection as the image start position for this slip detection, and acquiring the latest image from the continuously acquired target images based on the image start position; The slip angle of the coupling is determined by comparing the starting position of the image with the slip mark of the coupling.

2. The method for determining the slip state of a coupling according to claim 1, wherein: After determining that the coupling has a torque transmission failure, the method further includes: Send an alarm signal.

3. The method for judging the slip state of a coupling according to any one of claims 1 to 2, characterized in that: After determining the slip angle of the coupling according to the target image, the method further includes: If the slip angle reaches a preset angle, detecting whether a torque transmission failure occurs in the coupling; If no fault occurs, the process proceeds to the step of accumulating the number of slips and the slip angle of the coupling.

4. A coupling slip state judgment device, characterized in that: include: an acquisition module, for continuously acquiring a target image of the coupling; a determination module, configured to determine a slip angle of the coupling according to the target image; an accumulation module, configured to accumulate the number of slips and the slip angle of the coupling respectively if the slip angle is less than a preset angle; a determination module, configured to determine that a torque transmission failure occurs in the coupling when the cumulative number of slips or the cumulative slip angle reaches a preset value; Wherein, the determining module includes: a capture unit, configured to determine the end position of the target image during the last slip detection as the image start position for this slip detection, and to acquire the latest image from the continuously acquired target images based on the image start position; A comparison unit is used to determine the slip angle of the coupling by comparing the starting position of the image with the slip mark of the coupling.

5. The coupling slip state judgment device according to claim 4, characterized in that: Also includes: The alarm module is used to send an alarm signal.

6. A device for judging the slipping state of a coupling, characterized in that: include: memory for storing computer programs; The processor is used to execute the computer program to implement the steps of the coupling slip state judgment method according to any one of claims 1 to 3.

7. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the coupling slip state judgment method according to any one of claims 1 to 3 are implemented.

Images