A Wind Turbine Safety Chain Tester and a Speed Overspeed Monitoring System

Abstract

This utility model provides a safety chain tester for wind turbines and a speed overspeed monitoring system, which includes a tester body equipped with a power interface, a touch screen display, a first speed interface, a second speed interface, and a power switch. Both the first speed interface and the second speed interface are used to connect to the speed overspeed monitoring system. The touch screen display is equipped with a gear ratio setting window, a first speed setting window, a pre—change second speed ratio setting window, a post-change second speed ratio setting window, a start button, and a synchronization button. The functional components, located within the touch screen display, are used to set operating parameters. Due to the inclusion of the gear ratio setting window, the first speed setting window, the pre-change second speed ratio setting window, and the post-change second speed ratio setting window on the tester, it is possible to effectively test the speed overspeed monitoring component of the wind turbine safety chain system when testing various parts of the system.

Description

l A Wind Turbine Safety Chain Tester and a Speed Overspeed Monitoring System TECHNICAL FIELD The utility model belongs to the technical eld of speed overspeed monitoring system testing in wind turbine safety chain systems, particularly relating to a wind turbine safety chain tester and a speed overspeed monitoring system. BACKGROUND The safety chain system of a wind turbine is a dedicated detection system used to monitor the operation and power generation reliability of wind turbines. Within the system, the speed overspeed monitoring component plays a primary role in detecting whether the internal generator speed and impeller speed of the wind turbine exceed normal levels during operation, thereby preventing safety accidents caused by overspeed. However, existing safety chain testing devices for wind turbines can only simply check whether various parts of the safety chain system are functioning normally and whether the program logic is reasonable. They are unable to effectively test the speed overspeed monitoring component of the wind turbine safety chain system and adjust the operating parameters of this component based on the test results. This neglects whether the monitoring status of the speed overspeed monitoring component is normal, ultimately leading to poor accuracy in the detection performed by the wind turbine safety chain testing device. SUMMARY The objective of the utility model is to provide a wind turbine safety chain tester and a speed overspeed monitoring system, aimed at addressing the technical deficiencies of existing wind turbine safety chain testing devices. These devices can only simply detect whether various parts of the wind turbine safety chain system are functioning normally and whether the program logic is reasonable during use. They are unable to effectively test the speed overspeed monitoring component of the wind turbine safety chain system and adjust the operating parameters of this component based on the test results. This neglects whether the monitoring status of the speed overspeed monitoring component is normal, ultimately leading to poor accuracy in the detection performed by the wind turbine safety chain testing device. To achieve the objective of the utility model, the following technical solution is implemented: In the rst aspect, a wind turbine safety chain tester is provided, comprising: A tester body equipped with a power interface, a touchscreen display, a first speed interface, a second speed interface, and a power switch. Both the rst speed interface and the second speed interface are used to connect to the speed overspeed monitoring system; The touchscreen display is equipped with a gear ratio setting window, a rst speed setting window, a preratio change second speed setting window, a postratio change second speed setting window, a start button, and a synchronization button; A functional component is set within the touchscreen display for setting operating parameters. Furthermore, the rst speed interface is a generator speed interface, which is connected to the speed overspeed monitoring system via a connecting cable to transmit generator speed data to the tester body. Furthermore, the second speed interface is an impeller speed interface, which is connected to the speed overspeed monitoring system via a connecting cable to transmit impeller speed data to the tester body. Additionally, the gear ratio setting window is used to set the gear ratio value. Moreover, the rst speed setting window is used to set the generator speed value. Furthermore, the preratio change second speed setting window is used to set the impeller speed value before the ratio change. Additionally, the post-ratio change second speed setting window is used to display the impeller speed value after the ratio change. Moreover, the functional component includes a first functional parameter adjustment button, a second functional parameter adjustment button, a third functional parameter adjustment button, and a fourth functional parameter adjustment button, which are arranged at intervals in sequence. Furthermore, the rst functional parameter adjustment button, the second functional parameter adjustment button, the third functional parameter adjustment button, and the fourth functional parameter adjustment button adjust different values. In the second aspect, a speed overspeed monitoring system is provided, comprising a system body equipped with the wind turbine safety chain tester as described above. The benecial effects of the utility model are as follows: Due to the inclusion of the gear ratio setting window, the rst speed setting window, the pre-ratio change second speed setting window, and the post-ratio change second speed setting window on the tester, it is possible to effectively test the speed overspeed monitoring component of the wind turbine safety chain system when testing various parts of the system. The operating parameters of the speed overspeed monitoring component can be adjusted based on the test results, while ensuring the normal monitoring status of the speed overspeed monitoring component, thereby improving the accuracy of the wind turbine safety chain testing device. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a top view of the structure of the wind turbine safety chain tester provided by the utility model; Wherein: 1- Power indicator light; 2- External power supply indicator light; 3- Device operation indicator light; 4 Power interface; 5 First speed interface; 6 Second speed interface; 7 Touch screen display; 8 Power switch; 9 Gear ratio setting window; 10 First speed setting window; 11- Pre-ratio change second speed setting window; 12- Post-ratio change second speed setting window; 13- Start button; 14- Sync button; 15- Communication indicator light; 16 First functional parameter adjustment button; 17 Second functional parameter adjustment button; 18 Third functional parameter adjustment button; 19 Fourth functional parameter adjustment button. DETAILED DESCRIPTION To make the objectives, technical solutions, and advantages of the embodiments of the utility model clearer, the technical solutions of the embodiments of the utility model will be described clearly and completely below with reference to the drawings of the embodiments of the utility model. It is evident that the described embodiments are a part of the embodiments of the utility model, rather than all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different congurations. Therefore, the detailed description of the embodiments of the utility model provided in the drawings below is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the utility model fall within the scope of protection of the utility model. It should be noted that similar reference numerals and letters in the subsequent drawings represent similar items. Therefore, once an item is dened in one drawing, it does not need to be further dened and explained in subsequent drawings. In the description of the embodiments of the utility model, it should be explained that if terms such as "upper," "lower, "horizontal," "inner," etc., indicating orientation or positional relationships are used, they are based on the orientation or positional relationships shown in the drawings or the customary orientation or positional relationships when the utility model product is used. They are merely for the convenience of describing and simplifying the description of the utility model, and do not indicate or imply that the device or element referred to must have a specic orientation, be constructed and operated in a specic orientation, and therefore cannot be construed as limiting the utility model. In addition, terms such as "rst, second," etc., are used only for distinguishing descriptions, and cannot be construed as indicating or implying relative importance. Furthermore, if the term "horizontal" is used, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. "Horizontal" merely refers to a direction that is relatively more horizontal compared to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the embodiments of the utility model, it should also be noted that unless otherwise explicitly specied and limited, terms such as "set," "installed," "connected," and "linked" should be understood broadly. For example, they can refer to xed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be directly connected or indirectly connected through an intermediary medium; they can also refer to the internal connection between two components. For those of ordinary skill in the art, the specic meanings of the aforementioned terms in the utility model can be understood based on the specic context. As shown in Figure 1, this embodiment provides a wind turbine safety chain tester, which includes: a tester body equipped with a power interface 4, a touch screen display 7, a rst speed interface 5, a second speed interface 6, and a power switch 8. Both the rst speed interface 5 and the second speed interface 6 are used to connect to the speed overspeed monitoring system. The touch screen display 7 is equipped with a gear ratio setting window 9, a rst speed setting window 10, a pre-ratio change second speed setting window 11, a post-ratio change second speed setting window 12, a start button 13, and a sync button 14. The functional components are set within the touch screen display 7 for setting operational parameters. By using this wind turbine safety chain tester, it can be used in conjunction with regular inspections to simulate the real speed of a wind turbine (adjustable) on a onetoone basis under static conditions, thereby conducting safety chain overspeed tests on various brands of wind turbines. This not only improves the reliability and safety of the safety chain overspeed tests but also saves time wasted from repeated tower climbs due to the inability to conduct overspeed tests during low wind conditions. Additionally, it can test encoders, allowing for the quick detection of the condition of encoders in use in various production environments such as warehouses and inside wind turbines, providing maintenance personnel with intuitive and accurate diagnostic results. At the same time, it can be used for inbound inspection of newly purchased or repaired encoders to check for any unqualied equipment. Furthermore, it can assist in troubleshooting speed-related faults, quickly determining whether the fault lies in the detection system or the encoder spare parts. As shown in Figure l, the rst speed interface 5 is a generator speed interface 5, which is connected to the speed overspeed monitoring system via a connecting cable to transmit generator speed data to the tester body. The second speed interface 6 is a rotor speed interface, which is connected to the speed overspeed monitoring system via a connecting cable to transmit rotor speed data to the tester body. The gear ratio setting window 9 is used to set the gear ratio value, the rst speed setting window 10 is used to set the generator speed value, the second speed pre-ratio change setting window 11 is used to set the rotor speed value before the ratio change, and the second speed post-ratio change setting window 12 is used to display the rotor speed value after the ratio change. The functional components include a rst functional parameter adjustment button 16, a second functional parameter adjustment button 17, a third functional parameter adjustment button 18, and a fourth functional parameter adjustment button 19, which are spaced apart in sequence. Each of these buttons adjusts different values. During testing, rst, plug the power cord into the power interface 4 to connect to the power supply. At this point, the external power indicator light 2 turns on. The device has an internal battery, so the power cord does not need to be connected if testing is performed using the internal battery. Then, connect the wind turbine generator encoder cable and the slip ring encoder cable to the rst speed interface 5 and the second speed interface 6 of the tester body, respectively. Press the power switch 8 to turn on the tester, and the device operation indicator light 3 and the battery level indicator 1 turn on. At this point, the touch screen display 7 enters the initial interface. Next, tap the touch screen display 7, select the gear ratio setting window 9, and an edit box and soft keyboard will pop up. Input the parameters by touching the soft keyboard, and after input is complete, tap conrm to save the parameters. When conducting a generator speed test, tap the touch screen, select the rst speed setting window 10, and an edit box and soft keyboard will pop up. Input the parameters by touching the soft keyboard, set the generator speed to 2100, and after input is complete, tap conrm to save the parameters. Press the start button 13, which changes from red to green, indicating that the test has started successfully. After the test starts, the generator speed can be viewed on the wind turbine control panel, which shows 2100 RPM. At the same time, this speed exceeds the wind turbine's speed alarm limit, and the wind turbine reports a "generator overspeed" fault. During the testing process, relevant parameters can also be adjusted using the rst functional parameter adjustment button 16, the second functional parameter adjustment button 17, the third functional parameter adjustment button 18, and the fourth functional parameter adjustment button 19. When conducting a rotor speed test, tap the touch screen and select the second speed pre ratio change setting window 11. At this point, an edit box and soft keyboard will pop up. Input the parameters by touching the soft keyboard, set the rotor speed to 21, and after input is complete, tap conrm to save the parameters. Click the start button 13, which changes from red to green, indicating that the test has started successfully. After the test starts, the rotor speed can be viewed on the wind turbine control panel, which shows 21 RPM. At the same time, this speed exceeds the wind turbines speed alarm limit, and the wind turbine reports a "rotor overspeed" fault. When the power switch 8 is pressed again to turn on the device, the device operation indicator light 3, the battery level indicator light 1, and the touch screen display 7 turn off, indicating that the device is shut down. Finally, organize the equipment and cables, and the test is complete. The wind turbine generator safety chain tester in this embodiment is equipped with a high performance embedded microprocessor, integrating a high-speed counter and a digital signal processing module, capable of achieving multichannel signal synchronous acquisition and data fusion. The main control unit utilizes realtime overspeed detection and dynamic threshold judgment algorithms to analyze and process speed signals in real time, adaptively adjust the detection threshold, and achieve precise identication of the wind turbines overspeed status, while also completing data exchange with the display unit. The display unit adopts a touch screen as the humanmachine interface of the device, providing real-time display of fault alarm information, detection data, and operating status. It also integrates a remote feedback mechanism to transmit overspeed detection data and fault status to a remote monitoring center, supporting realtime monitoring and data storage, and providing fast and accurate status information presentation and management for the safe operation of the wind turbine. Application Example: Equipment Assembly and Test Preparation Firstly, place the tester body near the wind turbine generator set and connect it to a stable power supply via the power interface. Then, use the rst speed interface and the second speed interface to connect to the speed overspeed monitoring system of the wind turbine generator set, respectively. On the touch display screen, open the gear ratio setting window, the rst speed setting window, the pre-ratio change setting window for the second speed, and the postratio change setting window for the second speed in sequence. According to the actual parameters of the wind turbine generator set, input the corresponding gear ratio, rst speed value, pre-ratio change value for the second speed, and post-ratio change value for the second speed. Functional Component Setup and Operation On the touch display screen, set the operating parameters through the functional component settings. Depending on actual needs, different test modes (such as normal mode, fault mode, etc.) can be selected, and corresponding test conditions (such as speed, time, etc.) can be set. Click the start button to begin the test task. At this point, the tester will simulate the operation of the wind turbine generator set under different working conditions according to the preset parameters, while recording relevant data. Test Result Analysis and Processing After the test is completed, the test data can be synchronized to a computer or other devices via the synchronization button. By analyzing the test results, the safety performance of the wind turbine generator set can be evaluated, and potential fault hazards can be identied in a timely manner. Maintenance and Optimization Based on the test results, adjustments and optimizations can be made to the control system of the wind turbine generator set to improve its stability and safety. At the same time, regularly inspect the hardware and software components of the tester to ensure their normal operation. In summary, the wind turbine generator safety chain tester of the present utility model can help maintenance personnel promptly identify and resolve potential issues with the wind turbine generator set, thereby improving the overall performance and safety of the wind turbine generator set. The above describes the basic principles, main features, and advantages of the present utility model. Technicians in this eld should understand that the present utility model is not limited to the aforementioned embodiments. What is described in the embodiments and specication is only to illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, various changes and improvements can be made, which fall within the scope of the present utility model as claimed. The scope of protection claimed by the present utility model is dened by the appended claims and their equivalents. _ 10 _

Claims

1. Tester for safety chains for wind turbines, characterized by the fact that these includes the following: a tester body equipped with a power interface (4), a touchscreen display (7), a first speed interface (5), a second speed interface (6), and a circuit breaker (8), where the first speed interface (5) and the second speed interface (6) are both used to to connect an overspeed monitoring system; where the touchscreen display (7) is equipped with a gear ratio setting window (9), a first speed setting window (10), a ratio setting window (11) for second speed prior to change, a ratio setting window (12) for second speed after change, a start button (13), and a synchronization button (14); where functional components are provided within the touchscreen display (7) for setting operating parameters.

2. Tester according to conclusion 1, with the characteristic that the first speed interface (5) a generator speed interface (5) is, and the generator speed interface (5) connected is connected to the speed-overspeed monitoring system via a connecting wire for the transferring generator speed data to the tester housing.

3. Tester according to conclusion 1, with the characteristic that the second speed interface (6) is a fan speed interface, and the fan speed interface is connected to the speed-overspeed monitoring system via a connecting wire for the transferring fan speed data to the tester body.

4. Tester according to claim 1, with the characteristic that it gear ratio setting window (9) is used to the to set transmission ratio value.

5. Tester according to conclusion 1, with the characteristic that the first speed setting window (10) is used to set the generator speed value. _ 11 _ 6. Tester according to claim 1, characterized by a ratio setting window (11) used for second speed prior to change to the to set impeller speed value prior to the ratio change.

7. Tester according to claim 1, characterized by the ratio setting window (12) for second speed after change is used to the fan speed value to be displayed after the change in ratio.

8. Tester in accordance with claim 1, characterized in that the functional components a first functional parameter adjustment knob (16), a second functional parameter adjustment knob (1 7), a third functional parameter adjustment button (1 8), and a fourth functional parameter adjustment knob (19), include those successively at intervals be ranked 9. Tester according to conclusion 8, with the characteristic that the first functional parameter adjustment knob (1 6), the second functional parameter adjustment knob (1 7), the third functional parameter adjustment knob (1 8), and the fourth functional parameter adjustment button (19) adjust different values.

10. Speed-overspeed monitoring system comprising a system body, with the characteristic that the system body is equipped with the tester for wind turbine safety chain according to one of conclusions 19. 1 / 1 Fig.1

Images