Bearing ring running detection system, method and equipment and storage medium

Abstract

The invention provides a bearing ring running detection system, method and equipment and a storage medium. The system comprises a bearing, a unit main controller, a signal acquisition module, a power supply module and a signal line, one end of the signal line is connected with a first component in the bearing, and the other end of the signal line is connected with a second component in the bearing; the first part and the second part are connected in a nested manner; the power supply module is connected with the signal line and is used for supplying power to the signal line; the signal acquisition module is connected with the signal line and is used for acquiring an electric signal between the two ends of the signal line and transmitting the electric signal to the unit main controller; and the unit main controller is connected with the signal acquisition module and is used for detecting whether running occurs between the first component and the second component in the bearing according to the electric signal transmitted by the signal acquisition module. By adopting the system provided by the invention, the running condition of the bearing can be accurately and quickly detected.

Description

Technical Field

[0001] This invention relates to the field of wind power generation equipment technology, and in particular to a bearing misalignment detection system, method, equipment, and storage medium. Background Technology

[0002] Taking wind turbine generator sets as an example, the main bearing of a wind turbine generator set includes a bearing main shaft, bearing inner ring, bearing rollers, bearing outer ring, and bearing base, which are nested together in sequence. Bearing slippage refers to a failure phenomenon where relative movement occurs between the bearing outer ring and the bearing base, or between the bearing inner ring and the bearing main shaft, leading to bearing failure. This failure can cause problems such as bearing material peeling and seizing, and in severe cases, may damage the gearbox. Therefore, it is essential to inspect the main bearing for slippage.

[0003] In related technologies, when detecting the runout of the main bearing of a wind turbine generator, one method is to place an acceleration sensor on the bearing base of the main bearing and use the detected acceleration signal to detect the runout of the outer ring of the main bearing; another method is to collect signals from the main bearing during operation and use machine learning algorithms to identify anomalies in the collected signals in order to detect the runout of the outer ring of the main bearing.

[0004] However, the sensor detection signal in the first type of method is easily affected by the operation of the wind turbine generator set, and the second type of method requires an accurate wind turbine generator set model, which is difficult to make very accurate. Therefore, neither of these two types of methods can accurately detect the running of the main bearing. Summary of the Invention

[0005] This invention provides a bearing race detection system, method, device, and storage medium to overcome the shortcomings of existing technologies that cannot accurately detect bearing race. It achieves this by setting a fixed signal line between two components in the bearing that are prone to race, and configuring a power supply module and a signal acquisition module to form a simple electrical circuit. This circuit remains closed when the bearing is not experiencing race. Once race occurs, the relative angular displacement between the two components causes the signal line to break, making the circuit open. The electrical signals acquired by the signal acquisition module differ under these two different conditions, thus enabling rapid and accurate detection of race between the two bearing components based on the acquired electrical signals.

[0006] This invention provides a bearing race detection system, including a bearing, a main controller of the unit, a signal acquisition module, a power supply module, and signal lines; One end of the aforementioned signal line is connected to the first component in the bearing, and the other end of the signal line is connected to the second component in the bearing; the first component and the second component are nested together. The aforementioned power supply module is connected to the signal line and is used to supply power to the signal line; The aforementioned signal acquisition module is connected to the signal line and is used to acquire the electrical signal between the two ends of the signal line and transmit the electrical signal to the unit's main controller; The main controller of the aforementioned unit is connected to the signal acquisition module, which is used to detect whether there is a running wheel between the first and second components in the bearing based on the electrical signals transmitted by the signal acquisition module.

[0007] According to the bearing misalignment detection system provided by the present invention, the aforementioned electrical signal is an analog voltage signal, and the aforementioned main controller of the unit is specifically used to detect whether misalignment has occurred between the first component and the second component in the bearing based on the analog voltage signal and the output voltage of the power supply module.

[0008] According to the bearing misalignment detection system provided by the present invention, the main controller of the aforementioned unit is specifically used to determine that no misalignment has occurred between the first component and the second component in the bearing when the analog voltage signal is consistent with the output voltage of the power supply module; Alternatively, if the analog voltage signal is inconsistent with the output voltage of the power supply module, it can be determined that there is a running wheel between the first and second components in the bearing.

[0009] According to the bearing race detection system provided by the present invention, the signal acquisition module is a switch quantity acquisition module. Specifically, the switch quantity acquisition module is used to acquire the analog voltage signal between the two ends of the signal line, convert the analog voltage signal into a switch quantity signal, and determine the switch quantity signal as an electrical signal.

[0010] According to the present invention, a bearing misalignment detection system is provided, wherein the aforementioned switching signal includes a high-level signal or a low-level signal, and the aforementioned unit main controller is specifically used to determine, when it is determined that the received switching signal is a high-level signal, that no misalignment has occurred between the first component and the second component in the bearing; Alternatively, if the received switch signal is determined to be a low-level signal, it can be determined that a running circle has occurred between the first and second components in the bearing.

[0011] According to the bearing misalignment detection system provided by the present invention, the main controller of the unit is further configured to output an alarm message and / or trigger the unit protection logic when misalignment is detected between the first component and the second component in the bearing.

[0012] According to the present invention, a bearing race detection system is provided, wherein the bearing includes a base, an outer ring, an inner ring, and a spindle, wherein the first component is the outer ring of the bearing, and the second component is the base of the bearing; and / or, the first component is the inner ring of the bearing, and the second component is the spindle of the bearing.

[0013] The present invention also provides a bearing race detection method, applied to the above-mentioned bearing race detection system, the method comprising: The unit's main controller acquires the electrical signal transmitted by the signal acquisition module; the aforementioned electrical signal is the electrical signal between the two ends of the signal line acquired by the signal acquisition module, one end of the aforementioned signal line is connected to the first component in the bearing, and the other end of the signal line is connected to the second component in the bearing, with the first component and the second component nested together. The main controller of the above-mentioned unit detects whether there is a running circle between the first and second components in the bearing based on the electrical signal.

[0014] The present invention also provides a bearing race detection device, applied to the above-mentioned bearing race detection system, the device comprising the following modules: The signal acquisition module is used to acquire the electrical signal transmitted by the signal acquisition module; the electrical signal is the electrical signal between the two ends of the signal line acquired by the signal acquisition module, one end of the signal line is connected to the first component in the bearing, and the other end of the signal line is connected to the second component in the bearing, and the first component and the second component are nested together. The lap detection module is used to detect whether laps have occurred between the first and second components of the bearing based on electrical signals.

[0015] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the bearing lap detection method as described above.

[0016] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the bearing race detection method as described above.

[0017] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the bearing lap detection method as described above.

[0018] This invention provides a bearing misalignment detection system, method, device, and storage medium. The bearing misalignment detection system includes a bearing, a unit main controller, a signal acquisition module, a power supply module, and a signal line. One end of the signal line is connected to a first component in the bearing, and the other end is connected to a second component nested within the first component. The power supply module is connected to the signal line to supply power. The signal acquisition module is also connected to the signal line to acquire the electrical signal between the two ends of the signal line and transmit it to the unit main controller. The unit main controller is connected to the signal acquisition module to detect whether misalignment has occurred between the first and second components in the bearing based on the electrical signal transmitted by the signal acquisition module. This system establishes a simple electrical circuit by setting a fixed signal line between the two components in the bearing that are prone to misalignment, and configuring the power supply module and signal acquisition module. This circuit remains closed when the bearing is not misaligned. Once misalignment occurs, the relative angular displacement between the two components causes the signal line to break, and the circuit becomes open. The electrical signals acquired by the signal acquisition module differ under these two different conditions, thus enabling rapid and accurate detection of misalignment between the two components of the bearing based on the acquired electrical signals. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is one of the circuit structure schematic diagrams of the bearing lap detection system provided by the present invention; Figure 2 This is the second schematic diagram of the circuit structure of the bearing rim detection system provided by the present invention; Figure 3 This is a flowchart illustrating the bearing race detection method provided by the present invention; Figure 4 This is a schematic diagram of the bearing race detection device provided by the present invention; Figure 5 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0021] Explanation of reference numerals in the attached figures: Bearing: 10; Base: 101; Outer ring: 102; Inner ring: 103; Spindle: 104; Unit main controller: 20; Signal acquisition module: 30; Power supply module: 40; Signal line: 50. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0023] Currently, the detection of bearing runout in wind turbine main bearings largely relies on vibration analysis, temperature monitoring, or periodic manual inspections. Common methods include placing accelerometers in the bearing housing for fault diagnosis or using acoustic emission technology to capture abnormal signals during runout. Some solutions employ model-based machine learning methods for anomaly identification, while others achieve runout monitoring by adding specific measuring points or high-frequency sampling. All of these methods generally rely on a large amount of prior data. Vibration sensors are susceptible to interference from turbine operation, and model-based methods require accurate turbine models and have poor adaptability. Furthermore, most existing technologies are difficult to implement on a large scale with multiple turbines and long-term stability, resulting in high maintenance costs, insufficient real-time performance and accuracy, and an inability to economically and efficiently meet the early detection and warning needs for main bearing runout in the daily operation and maintenance of wind farms. Therefore, this invention provides a bearing runout detection system, method, equipment, and storage medium to solve the above-mentioned technical problems.

[0024] Figure 1 This is one of the circuit structure schematic diagrams of the bearing 10 lap detection system provided by the present invention. Figure 2 This is the second schematic diagram of the circuit structure of the bearing 10 running wheel detection system provided by the present invention, as shown below. Figure 1 and Figure 2 As shown, the system includes a bearing 10, a unit main controller 20, a signal acquisition module 30, a power supply module 40, and a signal line 50. One end of the signal line 50 is connected to a first component in the bearing 10, and the other end of the signal line 50 is connected to a second component in the bearing 10. The first component and the second component are nested together. The power supply module 40 is connected to the signal line 50 to supply power to the signal line 50. The signal acquisition module 30 is connected to the signal line 50 to acquire the electrical signal between the two ends of the signal line 50 and transmit the electrical signal to the unit main controller 20. The unit main controller 20 is connected to the signal acquisition module 30 to detect whether the first component and the second component in the bearing 10 are running circles based on the electrical signal transmitted by the signal acquisition module 30.

[0025] The bearing 10 can be any bearing in any device, such as a bearing 10 in a wind turbine generator set, or a bearing 10 in other devices. The bearing 10 may include a first component and a second component connected adjacent to each other. In this embodiment, the main function is to detect whether there is a running wheel phenomenon between the adjacent first component and the second component. Optionally, the bearing 10 includes a base 101, an outer ring 102, an inner ring 103, and a main shaft 104. The first component is the outer ring 102 of the bearing 10, and the second component is the base 101 of the bearing 10; and / or, the first component is the inner ring 103 of the bearing 10, and the second component is the main shaft 104 of the bearing 10. In other words, the bearing 10 may include components such as a base 101, an outer ring 102, rollers, an inner ring 103, and a spindle 104. It may also include other components. The components of the base 101, outer ring 102, rollers, inner ring 103, and spindle 104 are nested and connected in sequence from the outside to the inside. That is, the spindle 104 is the innermost layer, the inner ring 103 is nested and connected to the outside, the rollers are nested and connected to the outside of the inner ring 103, the outer ring 102 is nested and connected to the outside of the rollers, and the base 101 is nested and connected to the outside of the outer ring 102, thus forming the general structure of the bearing 10. This embodiment can detect whether misalignment occurs between the outer ring 102 of the bearing 10 and the base 101, and also between the inner ring 103 of the bearing 10 and the spindle 104. It can also detect misalignment between other adjacent connected components. Here, we will only use the detection of misalignment between the outer ring 102 of the bearing 10 and the base 101, and between the inner ring 103 of the bearing 10 and the spindle 104, as examples for explanation. Figure 1 The diagram shows the circuit structure for detecting whether raceway occurs between the outer ring 102 of the bearing 10 and the base 101. Figure 2 The circuit structure shown is for detecting whether there is running of the inner ring 103 of the bearing 10 and the spindle 104. Figure 1 and Figure 2 The thick line in the diagram refers to the signal line 50 connecting the two components of bearing 10, while the thin line refers to the connection lines between various modules in the circuit structure and the connection lines between the power supply module 40 and the signal line 50.

[0026] Taking the detection of whether raceway has occurred between the outer ring 102 and the base 101 of bearing 10 as an example, the circuit structure may include a signal line 50 connecting the outer ring 102 and the base 101 of bearing 10, a power supply module 40, a signal acquisition module 30, and a unit main controller 20. The signal line 50 has two terminals, one connected to the outer ring 102 and the other to the base 101. It can be a flexible signal line 50, remaining intact when there is no relative displacement between the outer ring 102 and the base 101, and breaking when there is relative displacement (i.e., raceway has occurred). The specific type of signal line 50 is not specifically limited. The power supply module 40 provides a stable DC voltage, such as 24V DC, to both ends of the signal line 50. The signal acquisition module 30 is connected to the two terminals of the signal line 50, and is used to acquire the electrical signal between the two terminals of the signal line 50, and transmit the acquired electrical signal to the unit main controller 20. The unit's main controller 20 is connected to the signal acquisition module 30 to receive electrical signals transmitted by the signal acquisition module 30. Based on these electrical signals, the main controller 20 detects whether misalignment has occurred between the outer ring 102 and the base 101 of the bearing 10. For example, if the main controller 20 determines that the electrical signal transmitted by the signal acquisition module 30 is large, it can determine that no misalignment has occurred between the outer ring 102 and the base 101; conversely, if the electrical signal transmitted by the signal acquisition module 30 is too small, it can determine that misalignment has occurred. The electrical signals transmitted from the signal acquisition module 30 to the main controller 20 can be either analog or digital.

[0027] Specifically, if there is no misalignment between the outer ring 102 of the bearing 10 and the base 101, the signal line 50 fixed between the outer ring 102 and the base 101 remains intact, i.e., it is not broken. The electrical circuit formed by the base 101, the signal line 50, the outer ring 102, and the signal acquisition module 30 is in a closed state. At this time, the signal acquisition module 30 will acquire a large electrical signal and transmit it to the unit main controller 20. The unit main controller 20 can determine that there is no misalignment between the outer ring 102 and the base 101 based on the large electrical signal. When the outer ring 102 of the bearing 10 and the base 101 are misaligned, a relative angular displacement occurs between them. This relative movement generates a tensile force, which will break the signal line 50 connecting them. After the signal line 50 breaks, the electrical circuit formed by the base 101, the signal line 50, the outer ring 102, and the signal acquisition module 30 is in an open / broken circuit state, and current cannot flow. At this time, the signal acquisition module 30 will collect a small electrical signal and transmit it to the unit main controller 20. The unit main controller 20 can determine that misalignment has occurred between the outer ring 102 and the base 101 based on the small electrical signal.

[0028] Taking the detection of whether raceway occurs between the inner ring 103 of bearing 10 and the spindle 104 as an example, the circuit structure may include a signal line 50 connecting the inner ring 103 of bearing 10 and the spindle 104, a power supply module 40, a signal acquisition module 30, and a unit main controller 20. The signal line 50 has two terminals, one connected to the inner ring 103 and the other to the spindle 104. It can be a flexible signal line 50, remaining intact when there is no relative displacement between the inner ring 103 and the spindle 104, and breaking when there is relative displacement (i.e., raceway occurs). The specific type of signal line 50 is not specifically limited. The power supply module 40 provides a stable DC voltage to both ends of the signal line 50. This stable DC voltage can be a high-level signal, such as a 24V DC voltage. The signal acquisition module 30 is connected to the two terminals of the signal line 50 and is used to acquire the electrical signal between the two terminals of the signal line 50, and transmit the acquired electrical signal to the unit main controller 20. The main controller 20 of the unit is connected to the signal acquisition module 30 to receive the electrical signals transmitted by the signal acquisition module 30 and to detect whether there is any misalignment between the inner ring 103 and the main shaft 104 of the bearing 10 based on the electrical signals. For example, if the main controller 20 determines that the electrical signal transmitted by the signal acquisition module 30 is large, it can determine that there is no misalignment between the inner ring 103 and the main shaft 104. If the main controller 20 determines that the electrical signal transmitted by the signal acquisition module 30 is too small, it can determine that there is misalignment between the inner ring 103 and the main shaft 104.

[0029] Specifically, if there is no misalignment between the inner ring 103 of the bearing 10 and the main shaft 104, the signal line 50 fixed between the inner ring 103 and the main shaft 104 remains intact, i.e., it is not broken. The electrical circuit formed by the inner ring 103, the signal line 50, the main shaft 104, and the signal acquisition module 30 is in a closed state. At this time, the signal acquisition module 30 will acquire a large electrical signal and transmit it to the unit main controller 20. The unit main controller 20 can determine that there is no misalignment between the inner ring 103 and the main shaft 104 based on the large electrical signal. When the inner ring 103 of the bearing 10 and the main shaft 104 experience misalignment, a relative angular displacement occurs between them. This relative movement generates tension, which can break the signal line 50 connecting them. After the signal line 50 breaks, the electrical circuit formed by the inner ring 103, the signal line 50, the main shaft 104, and the signal acquisition module 30 is in an open / broken circuit state, and current cannot flow. At this time, the signal acquisition module 30 will acquire a small electrical signal and transmit it to the unit main controller 20. The unit main controller 20 can determine that misalignment has occurred between the inner ring 103 and the main shaft 104 based on the small electrical signal.

[0030] The above method can be used to detect whether there is running race between the outer ring 102 of the bearing 10 and the base 101, as well as between the inner ring 103 of the bearing 10 and the spindle 104. This method can also be used to detect whether there is running race between other parts of the bearing 10, or between other devices. The detection scenarios will not be listed here.

[0031] It is understood that the aforementioned main controller 20 can be the original main controller 20 in the wind turbine generator set. In this embodiment, only a power supply module 40, a signal acquisition module 30, and a signal line 50 are needed to construct an electrical circuit to detect whether there is bearing slippage between two adjacent connected components in the bearing 10. Its structure is simple and low-cost, which can save the hardware and software overhead of high-frequency sampling, feature extraction, and model training, thereby greatly reducing the cost of single-point deployment and system complexity, and making it easy to deploy on a large scale, especially suitable for batch applications of multiple units in wind farms. In addition, most of the current related bearing slippage detection technologies rely on indirect analysis and threshold determination of vibration, temperature, or acoustic emission signals, which are easily affected by the operating conditions of the unit and environmental interference. In this embodiment, the bearing slippage can be detected by the magnitude of the electrical signal corresponding to the physical on / off state of the signal line 50, which eliminates the need for complex algorithms and experience, thereby effectively improving the efficiency, accuracy, and stability of bearing slippage detection.

[0032] In this embodiment, the bearing misalignment detection system includes a bearing, a unit main controller, a signal acquisition module, a power supply module, and a signal line. One end of the signal line is connected to a first component in the bearing, and the other end is connected to a second component nested within the first component in the bearing. The power supply module is connected to the signal line to supply power. The signal acquisition module is also connected to the signal line to acquire the electrical signal between the two ends of the signal line and transmit it to the unit main controller. The unit main controller is connected to the signal acquisition module to detect whether misalignment has occurred between the first and second components in the bearing based on the electrical signal transmitted by the signal acquisition module. This system establishes a simple electrical circuit by setting a fixed signal line between the two components in the bearing that are prone to misalignment, and configuring the power supply module and signal acquisition module. This circuit remains closed when the bearing is not misaligned. Once misalignment occurs, the relative angular displacement between the two components causes the signal line to break, and the circuit becomes open. The electrical signals acquired by the signal acquisition module differ under these two different conditions, thus enabling rapid and accurate detection of misalignment between the two components of the bearing based on the acquired electrical signals.

[0033] The above embodiments briefly illustrate that the unit main controller 20 can detect whether there is running between the two parts of the bearing 10 by the magnitude of the electrical signal transmitted by the signal acquisition module 30. The following embodiments will use the example of the unit main controller 20 receiving an analog electrical signal to illustrate the implementation of detecting whether there is running between the two parts of the bearing 10.

[0034] In one embodiment, the electrical signal is an analog voltage signal, and the main controller 20 of the unit is specifically used to detect whether there is a running circle between the first component and the second component in the bearing 10 based on the analog voltage signal and the output voltage of the power supply module 40.

[0035] The signal acquisition module 30 can acquire the analog voltage signal at both ends of the signal line 50 and transmit the acquired analog voltage signal to the unit main controller 20. The unit main controller 20 can also obtain the voltage supplied by the power supply module 40 to the two ends of the signal line, that is, obtain the output voltage of the power supply module 40. Then, the unit main controller 20 can determine whether the analog voltage signal transmitted by the signal acquisition module 30 is equal to the output voltage of the power supply module 40. If the analog voltage signal transmitted by the signal acquisition module 30 is equal to the output voltage of the power supply module 40, it is determined that no running is occurring between the first component and the second component in the bearing 10; or, if the analog voltage signal transmitted by the signal acquisition module 30 is not equal to the output voltage of the power supply module 40, it is determined that running is occurring between the first component and the second component in the bearing 10.

[0036] Alternatively, the main controller 20 can determine whether the analog voltage signal transmitted by the signal acquisition module 30 is consistent with the output voltage of the power supply module 40, obtain a judgment result, and determine whether there is wheel slippage between the first and second components in the bearing 10 based on the judgment result. Optionally, the main controller 20 is specifically used to determine that no wheel slippage has occurred between the first and second components in the bearing 10 when the analog voltage signal is consistent with the output voltage of the power supply module 40; or, to determine that wheel slippage has occurred between the first and second components in the bearing 10 when the analog voltage signal is inconsistent with the output voltage of the power supply module 40. Specifically, the main controller 20 can perform a difference calculation between the analog voltage signal transmitted by the signal acquisition module 30 and the output voltage of the power supply module 40 to obtain a difference value, and compare the absolute value of the difference with a preset threshold. If the absolute value of the difference is less than or equal to the preset threshold, it is determined that the analog voltage signal transmitted by the signal acquisition module 30 is consistent with the output voltage of the power supply module 40, and simultaneously it is determined that the signal line 50 between the first and second components of the bearing 10 has not been broken, i.e., no wheel slippage has occurred between the first and second components in the bearing 10. If the absolute value of the difference is greater than a preset threshold, it is determined that the analog voltage signal transmitted by the signal acquisition module 30 is inconsistent with the output voltage of the power supply module 40. Simultaneously, it can be determined that the signal line 50 between the first and second components of the bearing 10 has been broken, meaning that the first and second components of the bearing 10 are running in circles. The specific value of the preset threshold can be set according to actual conditions; for example, it can be set to 0 or a small positive number.

[0037] In this embodiment, the unit's main controller can comprehensively detect whether wheel slippage has occurred between the first and second components of the bearing based on two voltage signals: the analog voltage signal transmitted by the signal acquisition module and the output voltage of the power supply module. This combined judgment with the power supply module's output voltage improves the accuracy of the wheel slippage detection results. Furthermore, determining that no wheel slippage has occurred when the analog voltage signal transmitted by the signal acquisition module matches the output voltage of the power supply module, and determining that wheel slippage has occurred when they do not, simplifies the logic for wheel slippage detection and effectively improves its efficiency.

[0038] The above embodiments briefly illustrate that the unit main controller 20 can detect whether there is running between the two parts of the bearing 10 by the magnitude of the electrical signal transmitted by the signal acquisition module 30. The following embodiments will take the example that the electrical signal received by the unit main controller 20 is a digital electrical signal to illustrate the implementation method of detecting whether there is running between the two parts of the bearing 10.

[0039] In one embodiment, the signal acquisition module 30 is a switch quantity acquisition module, which is specifically used to acquire the analog voltage signal between the two ends of the signal line 50, convert the analog voltage signal into a switch quantity signal, and determine the switch quantity signal as an electrical signal.

[0040] The signal acquisition module 30 can be a switch signal acquisition module, which is a module that converts the acquired analog voltage signal into a high or low level signal, i.e., a switch signal / digital signal of 0 or 1, for output. Specifically, the switch signal acquisition module can acquire the analog voltage signal at both ends of the signal line 50 and compare the acquired analog voltage signal with the output voltage of the power supply module 40. If they match, the analog voltage signal at both ends of the signal line 50 is converted into a high level signal (e.g., 1); if they do not match, the analog voltage signal at both ends of the signal line 50 is converted into a low level signal (e.g., 0). In other words, the aforementioned switch signal includes either a high level signal or a low level signal. After obtaining such a switch signal, the switch signal acquisition module can use it as the acquired electrical signal and transmit it to the unit's main controller 20.

[0041] Optionally, the aforementioned main controller 20 is specifically configured to determine, when the received switch signal is a high-level signal, that no misalignment has occurred between the first and second components of the bearing 10; or, when the received switch signal is a low-level signal, to determine that misalignment has occurred between the first and second components of the bearing 10. Specifically, when the main controller 20 receives a high-level signal, it can determine that the analog voltage signal acquired by the signal acquisition module 30 is consistent with the output voltage of the power supply module 40, and simultaneously determine that the signal line 50 between the first and second components of the bearing 10 has not been broken, i.e., no misalignment has occurred between the first and second components of the bearing 10, and the bearing is in a normal state of "no misalignment in bearing 10". When the main controller 20 receives a low-level signal, it can determine that the analog voltage signal acquired by the signal acquisition module 30 is inconsistent with the output voltage of the power supply module 40, and simultaneously determine that the signal line 50 between the first and second components of the bearing 10 has been broken, i.e., misalignment has occurred between the first and second components of the bearing 10, and the bearing is in an abnormal state of "misalignment has occurred in bearing 10".

[0042] In this embodiment, the signal acquisition module is a switch signal acquisition module, which can convert the analog voltage signals at both ends of the acquired signal line into switch signals and transmit them to the main controller of the unit for lap detection. The unit can determine that no lap has occurred when it receives a high-level signal and that lap has occurred when it receives a low-level signal. By using physical level signals (i.e., switch signals) instead of analog or digital signal processing, the lap detection system can be unaffected by unit vibration, noise, electromagnetic compatibility and other issues. The false alarm rate of lap detection is lower and the stability is higher, making it more suitable for the harsh environment in which wind turbine generators are located.

[0043] The following example illustrates the process of triggering an alarm when laps occur.

[0044] In one embodiment, the unit main controller 20 is further configured to output an alarm message and / or trigger unit protection logic when a running circle is detected between the first and second components in the bearing 10.

[0045] When the main controller 20 detects that misalignment has occurred between the first and second components of bearing 10, it can output an alarm message to indicate that misalignment has occurred between the first and second components of bearing 10, requiring maintenance / repair of bearing 10. Simultaneously, the main controller 20 can automatically trigger the unit's protection logic, specifically by initiating a unit shutdown to prevent damage.

[0046] In this embodiment, when the main controller of the unit determines that a running circle has occurred between the first and second components in the bearing, it can output an alarm message and / or trigger the unit's protection logic. This can prevent damage to the unit and extend its service life.

[0047] In summary, the bearing lap detection system of this invention has the following technical effects: 1. The detection mechanism is direct and reliable, with strong anti-interference capabilities: Traditional vibration or acoustic emission detection methods are susceptible to the effects of unit operating noise, electromagnetic environment, and signal drift. The technical solution of this invention directly determines the running status by the on / off state of physical voltage levels, without the need for complex signal processing and filtering methods. This can avoid false alarms and missed alarms, and significantly improve the accuracy and reliability of detection.

[0048] 2. Simple structure, convenient deployment, easy implementation and maintenance: The bearing misalignment detection system of this invention only requires the installation of signal lines, a power supply module, and a signal acquisition module, eliminating the need for additional high-frequency sensors or dedicated data acquisition equipment, thus significantly reducing hardware costs and installation complexity. Furthermore, this bearing misalignment detection system eliminates the need for frequent calibration or model updates, reducing subsequent maintenance requirements and making it particularly suitable for large-scale application in wind farms.

[0049] 3. High real-time performance, rapid response, and support for early warning: Once a bearing starts to run out of race, a break in the signal line will immediately cause a level jump. The unit's main controller can identify and issue an alarm within seconds, greatly shortening the fault detection time and helping to avoid serious accidents such as main bearing damage and main shaft jamming caused by the continuous deterioration of the run-out.

[0050] 4. Low cost and strong scalability: The technical solution of this invention eliminates the need for high-value sensors and dedicated analysis equipment, resulting in extremely low cost for single-point monitoring. It can also be flexibly extended to all units in the wind farm and multiple key locations (such as the inner ring), realizing a low-cost bearing status monitoring network covering the entire field.

[0051] 5. No reliance on data and algorithms, highly adaptable: The technical solution of this invention does not rely on historical data for training or machine learning algorithms, which can avoid problems such as poor algorithm generalization ability and difficulty in model updating. It is applicable to wind turbine generator sets of different models and operating environments, and has high universality and engineering practical value.

[0052] The above embodiments illustrate the bearing race detection system and the specific implementation process of the bearing race detection system. The following embodiments illustrate the bearing race detection method applied to the bearing race detection system.

[0053] Figure 3 This is a flowchart illustrating the bearing race detection method provided by the present invention, as shown below. Figure 3 As shown, the method includes the following steps: Step 302: The unit's main controller acquires the electrical signal transmitted by the signal acquisition module; the electrical signal is the electrical signal between the two ends of the signal line acquired by the signal acquisition module, one end of the signal line is connected to the first component in the bearing, and the other end of the signal line is connected to the second component in the bearing, and the first component and the second component are nested together.

[0054] The electrical signal can be an analog voltage signal or a switching signal (i.e., a digital signal). For details on the process of the signal acquisition module acquiring the electrical signal and transmitting it to the unit's main controller, please refer to the relevant explanations in the above-mentioned embodiment of the bearing race detection system; these will not be repeated here.

[0055] Optionally, the bearing includes a base, an outer ring, an inner ring, and a spindle, wherein the first component is the outer ring of the bearing and the second component is the base of the bearing; and / or, the first component is the inner ring of the bearing and the second component is the spindle of the bearing.

[0056] Step 304: The unit's main controller detects whether there is a running circle between the first and second components in the bearing based on the electrical signal.

[0057] Optionally, the aforementioned electrical signal is an analog voltage signal. The main controller of the unit can detect whether wheel slippage has occurred between the first and second components in the bearing based on the analog voltage signal and the output voltage of the power supply module. Optionally, if the analog voltage signal and the output voltage of the power supply module are consistent, it is determined that no wheel slippage has occurred between the first and second components in the bearing; or, if the analog voltage signal and the output voltage of the power supply module are inconsistent, it is determined that wheel slippage has occurred between the first and second components in the bearing.

[0058] Optionally, the main controller of the aforementioned unit determines that no misalignment has occurred between the first and second components in the bearing if the received switch signal is a high-level signal; or, if the received switch signal is a low-level signal, it determines that misalignment has occurred between the first and second components in the bearing. The switch signal includes either a high-level or low-level signal, and is determined by the signal acquisition module after converting the analog voltage signal between the two ends of the acquired signal line.

[0059] Optionally, the above method further includes: when the main controller of the unit detects that a running circle has occurred between the first component and the second component in the bearing, it outputs an alarm message and / or triggers the unit protection logic.

[0060] For details regarding the process of the unit's main controller performing bearing race detection and alarm based on the received electrical signals, please refer to the relevant explanations in the above-mentioned embodiment of the bearing race detection system, which will not be repeated here.

[0061] In this embodiment, the unit's main controller can receive electrical signals transmitted by the signal acquisition module and detect whether misalignment has occurred between the first and second components in the bearing based on these signals. The electrical signal is the signal between the two ends of a signal line acquired by the signal acquisition module. One end of the signal line is connected to the first component in the bearing, and the other end is connected to the second component. The first and second components are nested together. In this method, a fixed signal line is set between the two components in the bearing that are prone to misalignment, and a power supply module and a signal acquisition module are configured to form a simple electrical circuit. This circuit remains closed when the bearing is not misaligned. Once misalignment occurs, the relative angular displacement between the two components causes the signal line to break, and the circuit becomes open. The electrical signals acquired by the signal acquisition module differ under these two different conditions, thus enabling rapid and accurate detection of misalignment between the two components of the bearing based on the acquired electrical signals.

[0062] The bearing race detection device provided by the present invention is described below. The bearing race detection device described below can be referred to in correspondence with the bearing race detection method described above.

[0063] Figure 4 This is a schematic diagram of the bearing race detection device provided by the present invention. (See attached diagram) Figure 4 As shown, the device may include: The signal acquisition module 410 is used to acquire the electrical signal transmitted by the signal acquisition module; the electrical signal is the electrical signal between the two ends of the signal line acquired by the signal acquisition module, one end of the signal line is connected to the first component in the bearing, and the other end of the signal line is connected to the second component in the bearing, and the first component and the second component are nested together. The lap detection module 420 is used to detect whether laps have occurred between the first and second components in the bearing based on electrical signals.

[0064] In one embodiment, the electrical signal is an analog voltage signal, and the lap detection module 420 is specifically used to detect whether laps have occurred between the first component and the second component in the bearing based on the analog voltage signal and the output voltage of the power supply module.

[0065] Optionally, the aforementioned lap detection module 420 is specifically used to determine that no lap has occurred between the first and second components in the bearing when the analog voltage signal is consistent with the output voltage of the power supply module; or, when the analog voltage signal is inconsistent with the output voltage of the power supply module, to determine that lap has occurred between the first and second components in the bearing.

[0066] In one embodiment, the aforementioned lap detection module 420 is specifically used to determine that no lap has occurred between the first component and the second component in the bearing when the received switch signal is a high-level signal; or, to determine that lap has occurred between the first component and the second component in the bearing when the received switch signal is a low-level signal.

[0067] Optionally, the aforementioned switching signal includes a high-level signal or a low-level signal, and the aforementioned switching signal is a signal determined by the signal acquisition module after converting the analog voltage signal between the two ends of the acquired signal line.

[0068] In one embodiment, the above-mentioned device further includes an alarm module, which is used to output an alarm message and / or trigger the unit protection logic when a running circle is detected between the first component and the second component in the bearing.

[0069] In one embodiment, the bearing includes a base, an outer ring, an inner ring, and a spindle, wherein the first component is the outer ring of the bearing and the second component is the base of the bearing; and / or, the first component is the inner ring of the bearing and the second component is the spindle of the bearing.

[0070] It should be noted that the apparatus provided in this embodiment of the invention can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0071] Figure 5 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 5 As shown, the electronic device may include a processor 510, a communications interface 520, a memory 530, and a communication bus 540, wherein the processor 510, communications interface 520, and memory 530 communicate with each other via the communication bus 540. The processor 510 can call logical instructions in the memory 530 to execute a bearing misalignment detection method. This method includes: the unit's main controller acquiring an electrical signal transmitted by a signal acquisition module; the electrical signal is an electrical signal between the two ends of a signal line acquired by the signal acquisition module, one end of the signal line being connected to a first component in the bearing, and the other end of the signal line being connected to a second component in the bearing, the first component and the second component being nested together; the unit's main controller detecting whether misalignment has occurred between the first component and the second component in the bearing based on the electrical signal.

[0072] Furthermore, the logical instructions in the aforementioned memory 530 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0073] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the bearing lap detection method provided by the above methods. The method includes: the unit main controller acquiring an electrical signal transmitted by a signal acquisition module; the electrical signal is an electrical signal between two ends of a signal line acquired by the signal acquisition module, one end of the signal line being connected to a first component in the bearing, and the other end of the signal line being connected to a second component in the bearing, wherein the first component and the second component are nested together; the unit main controller detecting whether laps have occurred between the first component and the second component in the bearing based on the electrical signal.

[0074] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the bearing misalignment detection method provided by the above methods. The method includes: the unit main controller acquiring an electrical signal transmitted by a signal acquisition module; the electrical signal being an electrical signal between two ends of a signal line acquired by the signal acquisition module, one end of the signal line being connected to a first component in the bearing, and the other end of the signal line being connected to a second component in the bearing, wherein the first component and the second component are nested together; and the unit main controller detecting whether misalignment has occurred between the first component and the second component in the bearing based on the electrical signal.

[0075] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0076] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bearing race detection system, characterized in that, This includes bearings, the unit's main controller, signal acquisition modules, power supply modules, and signal lines; One end of the signal line is connected to a first component in the bearing, and the other end of the signal line is connected to a second component in the bearing; the first component and the second component are nested together. The power supply module is connected to the signal line and is used to supply power to the signal line; The signal acquisition module is connected to the signal line and is used to acquire the electrical signal between the two ends of the signal line and transmit the electrical signal to the unit's main controller; The main controller of the unit is connected to the signal acquisition module and is used to detect whether the first component and the second component in the bearing have run-around based on the electrical signal transmitted by the signal acquisition module.

2. The bearing race detection system according to claim 1, characterized in that, The electrical signal is an analog voltage signal. The main controller of the unit is specifically used to detect whether there is a running circle between the first component and the second component in the bearing based on the analog voltage signal and the output voltage of the power supply module.

3. The bearing race detection system according to claim 2, characterized in that, The main controller of the unit is specifically used to determine, when the analog voltage signal is consistent with the output voltage of the power supply module, that no wheel running has occurred between the first component and the second component in the bearing; Alternatively, if the analog voltage signal is inconsistent with the output voltage of the power supply module, it can be determined that a running circle has occurred between the first component and the second component in the bearing.

4. The bearing race detection system according to claim 1, characterized in that, The signal acquisition module is a switch quantity acquisition module, which is specifically used to acquire the analog voltage signal between the two ends of the signal line, convert the analog voltage signal into a switch quantity signal, and determine the switch quantity signal as the electrical signal.

5. The bearing race detection system according to claim 4, characterized in that, The switching signal includes a high-level signal or a low-level signal. Specifically, the unit's main controller is used to determine, when it is determined that the received switching signal is a high-level signal, that no running is occurring between the first component and the second component in the bearing. Alternatively, if the received switching signal is determined to be a low-level signal, it can be determined that a running circle has occurred between the first component and the second component in the bearing.

6. The bearing race detection system according to any one of claims 1 to 5, characterized in that, The main controller of the unit is also used to output an alarm message and / or trigger the unit protection logic when it detects that a running circle has occurred between the first component and the second component in the bearing.

7. The bearing race detection system according to any one of claims 1 to 5, characterized in that, The bearing includes a base, an outer ring, an inner ring, and a spindle. The first component is the outer ring of the bearing, and the second component is the base of the bearing; and / or, the first component is the inner ring of the bearing, and the second component is the spindle of the bearing.

8. A method for detecting bearing race running, characterized in that, The method, applied to the bearing lap detection system according to any one of claims 1 to 7, comprises: The unit's main controller acquires the electrical signal transmitted by the signal acquisition module; the electrical signal is the electrical signal between the two ends of the signal line acquired by the signal acquisition module, one end of the signal line is connected to the first component in the bearing, and the other end of the signal line is connected to the second component in the bearing, with the first component and the second component nested together. The unit's main controller detects whether there is a running circle between the first component and the second component in the bearing based on the electrical signal.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the bearing lap detection method as described in claim 8.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the bearing lap detection method as described in claim 8.

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