A diesel generator rotating shaft driving and state analyzing device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CNNC FUJIAN FUQING NUCLEAR POWER
- Filing Date
- 2023-12-08
- Publication Date
- 2026-06-09
Smart Images
Figure CN117782609B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of emergency diesel generator maintenance technology in nuclear power plants, and in particular to a diesel generator shaft drive and condition analysis device. Background Technology
[0002] Emergency diesel generators in nuclear power plants typically consist of a diesel engine and a generator assembly. They are critical nuclear safety equipment requiring regular maintenance. Before and after maintenance, the diesel engine shaft inside the generator must be manually rotated to check for smooth rotation and any jamming. During maintenance, the diesel engine shaft must also be rotated to several specific angles according to a work procedure to perform relevant performance tests. However, inside the generator, the diesel engine shaft and generator shaft are linked, resulting in a high starting torque for the diesel engine shaft. Furthermore, due to the extremely confined space, it is impossible to directly rotate the diesel engine shaft manually. Typically, the coupling between the diesel engine shaft and generator shaft needs to be disconnected to reduce the starting torque. Then, operators use a torque multiplier and extension rod to drive the diesel engine shaft to rotate, performing checks on the diesel engine shaft's condition and the generator's performance. In summary, the main problems currently encountered in diesel generator maintenance are as follows:
[0003] 1. The inspection of the diesel generator shaft condition is based on manual experience to judge whether it is flexible and whether there is any jamming. This is subject to the risk of human error and does not check the condition of the generator shaft, which does not meet the requirements of refined management of nuclear power.
[0004] 2. Emergency diesel generator sets for nuclear power plants require regular inspection and adjustment of valve clearance and checking of the phase angle of the starting air distributor. It is impossible to accurately rotate the diesel generator shaft to a specific angle by manual means, which is not conducive to diesel generator performance testing.
[0005] 3. Before and after maintenance of diesel generators, the coupling between the diesel engine and the generator needs to be disassembled and reassembled, resulting in low maintenance efficiency. The disassembly and reassembly of the coupling itself will also have an adverse effect on the performance of the diesel generator. In addition, the coupling is connected by 48 high-strength bolts of grade 12.9, which are one-time imported high-strength bolts. They need to be replaced after each disassembly, which is costly.
[0006] 4. The on-site environment is harsh and the space is small, making it difficult, time-consuming and labor-intensive to carry out construction by hand. Summary of the Invention
[0007] The purpose of this invention is to address the aforementioned problems in diesel generator maintenance by providing a diesel generator shaft drive and condition analysis device. This device drives the diesel engine shaft to rotate according to preset speed, torque, and angle parameters without tripping the generator; monitors and displays the speed, torque, and vibration parameters during the rotation of the diesel engine shaft; and performs quantitative calculation and analysis of these parameters to complete the diesel generator shaft condition analysis.
[0008] To achieve the above objectives, the present invention provides the following technical solution:
[0009] A diesel generator shaft drive and state analysis device includes: a driver for receiving control commands from a controller, driving the diesel engine shaft to rotate according to the speed, torque, and angle parameters set by the control commands without tripping the generator, and collecting and uploading the speed and torque parameters of the diesel engine shaft to the controller; a vibration sensor for collecting and uploading the vibration parameters of the diesel engine shaft to the controller; and a controller for sending control commands to the driver, receiving the speed and torque parameters of the diesel engine shaft uploaded by the driver and the vibration parameters of the diesel engine shaft uploaded by the vibration sensor, and performing state analysis of the diesel engine shaft based on the vibration, speed, and torque parameters of the diesel engine shaft.
[0010] Furthermore, the controller embeds an intelligent analysis system, which includes a control command module and a state analysis module. The vibration sensor collects vibration parameters of the diesel engine shaft and uploads them to the state analysis module. The driver collects the speed and torque parameters of the diesel engine shaft and uploads them to the state analysis module. The control command module is used to set the torque, speed, angle, torque transmission ratio, and speed transmission ratio parameters output by the brushless DC motor, and generates control commands based on these parameters to send to the driver. The state analysis module is used to receive the vibration parameters of the diesel engine shaft uploaded by the vibration sensor and the speed and torque parameters uploaded by the driver, and performs state analysis of the diesel engine shaft based on these vibration, speed, and torque parameters.
[0011] Furthermore, the driver includes a brushless DC motor, a planetary reducer, a speed sensor, and a torque sensor. The output of the brushless DC motor is connected to the input of the planetary reducer, and the output of the planetary reducer is connected to the diesel engine shaft interface via a reaction arm. The speed sensor collects the diesel engine shaft speed parameters and uploads them to the status analysis module. The torque sensor collects the diesel engine shaft torque parameters and uploads them to the status analysis module. The status analysis module receives the diesel engine shaft speed parameters uploaded by the speed sensor and the diesel engine shaft torque parameters uploaded by the torque sensor. The control commands include a first control command and a second control command. The control command module generates a first control command based on the set torque, speed, and angle parameters output by the brushless DC motor and sends it to the brushless DC motor. It also generates a second control command based on the set torque transmission ratio and speed transmission ratio parameters output by the brushless DC motor and sends it to the planetary reducer. The brushless DC motor receives the first control command sent by the control command module and outputs the torque, speed, and angle set by the first control command. The planetary reducer receives the second control command sent by the control command module and adjusts the torque transmission ratio and speed transmission ratio output by the brushless DC motor to the values set by the second control command.
[0012] Furthermore, the state analysis module performs state analysis of the diesel engine shaft based on the vibration, speed, and torque parameters of the diesel engine shaft, including the following steps:
[0013] Step 1: Calculate the diesel engine shaft load power consumption according to the following formula:
[0014]
[0015] In the formula, T represents the diesel engine shaft torque parameter; n represents the diesel engine shaft speed parameter; and P represents the diesel engine shaft load power consumption.
[0016] Step 2: Extract features from the diesel engine shaft load power consumption parameters. Transform the diesel engine shaft load power consumption parameters to the frequency domain using Fourier transform for analysis. Obtain the frequency points of the diesel engine shaft load power consumption parameter distribution through Fourier transform to obtain the frequency domain features of the diesel engine shaft load power consumption parameters.
[0017] Step 3: Extract features from the diesel engine shaft vibration parameters. Transform the diesel engine shaft vibration parameters to the frequency domain using Fourier transform for analysis. Obtain the frequency points of the diesel engine shaft vibration parameter distribution through Fourier transform to obtain the frequency domain features of the diesel engine shaft vibration parameters.
[0018] Step 4: Compare the frequency domain characteristics of the diesel engine shaft load power consumption parameters with the frequency domain characteristics of the diesel engine shaft vibration parameters; when the consistency between the two is greater than 50%, the diesel engine shaft is judged to be in an abnormal state and an alarm is triggered; when the consistency between the two is less than or equal to 50%, the diesel engine shaft is judged to be in an normal state.
[0019] Furthermore, the status analysis module is also used for overload and over-threshold alarms of the diesel engine shaft torque; the status analysis module sets the diesel engine shaft torque threshold and the diesel engine shaft torque overload value; when the diesel engine shaft torque parameter exceeds the set threshold, the status analysis module issues a diesel engine shaft torque over-threshold alarm; when the diesel engine shaft torque parameter exceeds the set overload value, the status analysis module issues a diesel engine shaft torque overload alarm.
[0020] Furthermore, the status analysis module is also used for alarming the operating parameters of the brushless DC motor; the status analysis module acquires the operating parameters of the brushless DC motor in real time and determines whether the operating parameters of the brushless DC motor exceed the set threshold; when the operating parameters of the brushless DC motor exceed the set threshold, the status analysis module alarms the operating parameters of the brushless DC motor; the operating parameters of the brushless DC motor include the operating current of the brushless DC motor and the operating temperature of the brushless DC motor.
[0021] Furthermore, the intelligent analysis system also includes a database, a status monitoring module, a data statistical analysis module, a system settings module, and a user management module. The speed sensor collects diesel engine shaft speed parameters and uploads them to the status monitoring module; the torque sensor collects diesel engine shaft torque parameters and uploads them to the status monitoring module; the vibration sensor collects diesel engine shaft vibration parameters and uploads them to the status monitoring module. The status monitoring module receives the diesel engine shaft vibration parameters uploaded by the vibration sensor, the diesel engine shaft speed parameters uploaded by the speed sensor, and the diesel engine shaft vibration parameters uploaded by the torque sensor, and stores them in the database. It displays the vibration, speed, and torque parameters of the diesel engine shaft in numerical and real-time curve formats. The data statistical analysis module is used for importing, exporting, displaying, filtering, retrieving, and comparing time-period data curves of the diesel engine shaft's vibration, speed, and torque parameters. The system settings module is used for gateway settings and network connection settings. The user management module is used for user settings and permission management of the intelligent analysis system.
[0022] Furthermore, the controller is equipped with a touch screen; the speed sensor sends diesel engine shaft speed parameters to the touch screen in real time, the torque sensor sends diesel engine shaft torque parameters to the touch screen in real time, the vibration sensor sends diesel engine shaft vibration parameters to the touch screen in real time, and the status analysis module sends diesel engine shaft status parameters to the touch screen in real time. The touch screen receives and displays the diesel engine shaft speed parameters sent by the speed sensor, the torque parameters sent by the torque sensor, the vibration parameters sent by the vibration sensor, and the status parameters sent by the status analysis module in real time.
[0023] Furthermore, the driver also includes a local display module, which is composed of an LCD screen; the speed sensor sends diesel engine shaft speed parameters to the local display module in real time, the torque sensor sends diesel engine shaft torque parameters to the local display module in real time, and the status analysis module sends diesel engine shaft status parameters to the local display module in real time; the local display module receives and displays the diesel engine shaft speed parameters sent by the speed sensor, the diesel engine shaft torque parameters sent by the torque sensor, and the diesel engine shaft status parameters sent by the status analysis module in real time.
[0024] Furthermore, the driver has a built-in rechargeable battery that provides power to the driver; the controller has a built-in rechargeable battery that provides power to the controller; and the vibration sensor has a built-in rechargeable battery that provides power to the vibration sensor.
[0025] Furthermore, the driver, controller, and vibration sensor are wirelessly connected via a gateway powered by a built-in rechargeable battery.
[0026] Furthermore, the driver has a built-in wireless communication module, the controller has a built-in wireless communication module, and the vibration sensor has a built-in wireless communication module; the wireless communication module built into the driver and the wireless communication module built into the controller are wirelessly connected through a gateway; the wireless communication module built into the vibration sensor and the wireless communication module built into the controller are wirelessly connected through a gateway.
[0027] Beneficial technical effects of the present invention:
[0028] The diesel generator shaft drive and condition analysis device of this invention precisely controls the rotation state of the diesel engine shaft according to preset torque, speed, and angle without disengaging the generator, thus automating the analysis of the diesel generator shaft condition. This effectively promotes the standardized implementation of diesel generator shaft drive and condition analysis, avoids human error, and improves work efficiency. By collecting and processing torque, speed, and vibration data during the rotation of the diesel engine shaft, it quantitatively analyzes the high-order condition information of the diesel generator shaft, ensuring the accuracy of the diesel generator shaft condition analysis. The internal modules of the device use wireless communication and have built-in rechargeable batteries. The driver integrates torque and speed sensors, enabling efficient and convenient diesel generator shaft condition diagnosis in confined spaces. It can display the torque, speed, and vibration parameters and corresponding curves of the diesel generator shaft in real time, facilitating operators to monitor the real-time condition of the diesel generator shaft. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of the diesel generator shaft drive and state analysis device of the present invention;
[0030] Figure 2 Assembly diagram of the drive unit and diesel generator shaft;
[0031] Figure 3 Exploded view of the drive unit and diesel generator shaft assembly.
[0032] In the diagram, 1 is a brushless DC motor; 2 is a planetary reducer; 3 is a reaction arm; 4 is a diesel engine shaft interface; and 5 is a diesel engine housing. Detailed Implementation
[0033] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0034] See Figure 1-3This embodiment provides a diesel generator shaft drive and state analysis device, including: a driver, used to receive control commands from a controller, drive the diesel engine shaft to rotate according to the speed, torque, and angle parameters set by the control commands without disengaging the generator, and collect the speed and torque parameters of the diesel engine shaft and upload them to the controller; a vibration sensor, used to collect the vibration parameters of the diesel engine shaft and upload them to the controller; and a controller, used to send control commands to the driver, receive the speed and torque parameters of the diesel engine shaft uploaded by the driver and the vibration parameters of the diesel engine shaft uploaded by the vibration sensor, and perform state analysis of the diesel engine shaft based on the vibration, speed, and torque parameters of the diesel engine shaft.
[0035] In this embodiment, the controller embeds an intelligent analysis system, which includes a control command module and a state analysis module. The vibration sensor collects vibration parameters of the diesel engine shaft and uploads them to the state analysis module. The driver collects the rotational speed and torque parameters of the diesel engine shaft and uploads them to the state analysis module. The control command module is used to set the torque, rotational speed, angle, torque transmission ratio, and rotational speed transmission ratio parameters output by the brushless DC motor 1, and generates control commands based on these parameters to send to the driver. The state analysis module is used to receive the vibration parameters of the diesel engine shaft uploaded by the vibration sensor and the rotational speed and torque parameters uploaded by the driver, and performs state analysis of the diesel engine shaft based on these parameters.
[0036] In this embodiment, the driver includes a brushless DC motor 1, a planetary reducer 2, a speed sensor, and a torque sensor. The output of the brushless DC motor 1 is connected to the input of the planetary reducer 2, and the output of the planetary reducer 2 is connected to the diesel engine shaft interface 4 via a reaction arm 3. The speed sensor collects the diesel engine shaft speed parameters and uploads them to the status analysis module. The torque sensor collects the diesel engine shaft torque parameters and uploads them to the status analysis module. The status analysis module receives the diesel engine shaft speed parameters uploaded by the speed sensor and the diesel engine shaft torque parameters uploaded by the torque sensor. The control command includes a first... The control command module generates a first control command based on the torque, speed, and angle parameters output by the brushless DC motor 1 and sends it to the brushless DC motor 1. It also generates a second control command based on the torque transmission ratio and speed transmission ratio parameters output by the brushless DC motor 1 and sends it to the planetary reducer 2. The brushless DC motor 1 receives the first control command from the control command module and outputs the torque, speed, and angle set by the first control command. The planetary reducer 2 receives the second control command from the control command module and adjusts the torque transmission ratio and speed transmission ratio output by the brushless DC motor 1 to the values set by the second control command.
[0037] The reaction arm 3 provides a support point for the drive unit to power the diesel engine shaft. The planetary reducer 2 adjusts the torque and speed transmission ratio of the brushless DC motor 1 within a suitable range to ensure reliable drive of the diesel engine shaft by the drive unit.
[0038] In this embodiment, the brushless DC motor 1 supports forward and reverse rotation, with a maximum output torque of 4500 Nm and a maximum no-load speed of 3 RPM.
[0039] In this embodiment, the state analysis module performs state analysis of the diesel engine shaft based on the vibration, speed, and torque parameters of the diesel engine shaft, including the following steps:
[0040] Step 1: Calculate the diesel engine shaft load power consumption according to the following formula:
[0041]
[0042] In the formula, T represents the diesel engine shaft torque parameter; n represents the diesel engine shaft speed parameter; and P represents the diesel engine shaft load power consumption.
[0043] Step 2: Extract features from the diesel engine shaft load power consumption parameters. Transform the diesel engine shaft load power consumption parameters to the frequency domain using Fourier transform for analysis. Obtain the frequency points of the diesel engine shaft load power consumption parameter distribution through Fourier transform to obtain the frequency domain features of the diesel engine shaft load power consumption parameters.
[0044] Step 3: Extract features from the diesel engine shaft vibration parameters. Transform the diesel engine shaft vibration parameters to the frequency domain using Fourier transform for analysis. Obtain the frequency points of the diesel engine shaft vibration parameter distribution through Fourier transform to obtain the frequency domain features of the diesel engine shaft vibration parameters.
[0045] Step 4: Compare the frequency domain characteristics of the diesel engine shaft load power consumption parameters with the frequency domain characteristics of the diesel engine shaft vibration parameters; when the consistency between the two is greater than 50%, the diesel engine shaft is judged to be in an abnormal state and an alarm is triggered; when the consistency between the two is less than or equal to 50%, the diesel engine shaft is judged to be in an normal state.
[0046] In this embodiment, the status analysis module is also used for overload and threshold alarms of diesel engine shaft torque; the status analysis module sets the diesel engine shaft torque threshold and the diesel engine shaft torque overload value; when the diesel engine shaft torque parameter exceeds the set threshold, the status analysis module issues a diesel engine shaft torque over-threshold alarm; when the diesel engine shaft torque parameter exceeds the set overload value, the status analysis module issues a diesel engine shaft torque overload alarm.
[0047] In this embodiment, the status analysis module is also used for alarming the operating parameters of the brushless DC motor 1; the status analysis module acquires the operating parameters of the brushless DC motor 1 in real time and determines whether the operating parameters of the brushless DC motor 1 exceed the set threshold; when the operating parameters of the brushless DC motor 1 exceed the set threshold, the status analysis module alarms the operating parameters of the brushless DC motor 1; the operating parameters of the brushless DC motor 1 include the operating current of the brushless DC motor 1 and the operating temperature of the brushless DC motor 1.
[0048] In this embodiment, the intelligent analysis system further includes a database, a status monitoring module, a data statistical analysis module, a system settings module, and a user management module. The speed sensor collects diesel engine shaft speed parameters and uploads them to the status monitoring module; the torque sensor collects diesel engine shaft torque parameters and uploads them to the status monitoring module; and the vibration sensor collects diesel engine shaft vibration parameters and uploads them to the status monitoring module. The status monitoring module receives the diesel engine shaft vibration parameters uploaded by the vibration sensor, the diesel engine shaft speed parameters uploaded by the speed sensor, and the diesel engine shaft vibration parameters uploaded by the torque sensor, and stores them in the database. It displays the vibration, speed, and torque parameters of the diesel engine shaft in numerical and real-time curve formats. The data statistical analysis module imports, exports, displays, filters, retrieves, and compares data curves over time periods for the vibration, speed, and torque parameters of the diesel engine shaft. The system settings module is used for gateway settings and network connection settings. The user management module is used for user settings and permission management for the intelligent analysis system.
[0049] In this embodiment, the controller is equipped with a touch screen; the speed sensor sends diesel engine shaft speed parameters to the touch screen in real time, the torque sensor sends diesel engine shaft torque parameters to the touch screen in real time, the vibration sensor sends diesel engine shaft vibration parameters to the touch screen in real time, and the status analysis module sends diesel engine shaft status parameters to the touch screen in real time; the touch screen receives and displays the diesel engine shaft speed parameters sent by the speed sensor, the torque parameters sent by the torque sensor, the vibration parameters sent by the vibration sensor, and the status parameters sent by the status analysis module in real time.
[0050] In this embodiment, the driver further includes a local display module, which consists of a 1.8-inch LCD screen. The speed sensor sends diesel engine shaft speed parameters to the local display module in real time, the torque sensor sends diesel engine shaft torque parameters to the local display module in real time, and the status analysis module sends diesel engine shaft status parameters to the local display module in real time. The local display module receives and displays the diesel engine shaft speed parameters sent by the speed sensor, the diesel engine shaft torque parameters sent by the torque sensor, and the diesel engine shaft status parameters sent by the status analysis module in real time.
[0051] In this embodiment, the driver has a built-in rechargeable battery that provides power to the driver, ensuring the flexibility of the driver's use; the controller has a built-in rechargeable battery that provides power to the controller; and the vibration sensor has a built-in rechargeable battery that provides power to the vibration sensor.
[0052] In this embodiment, the driver, controller, and vibration sensor are wirelessly connected via a gateway; the gateway is powered by a built-in rechargeable battery.
[0053] In this embodiment, the driver has a built-in wireless communication module, the controller has a built-in wireless communication module, and the vibration sensor has a built-in wireless communication module; the wireless communication module built into the driver and the wireless communication module built into the controller are wirelessly connected through a gateway; the wireless communication module built into the vibration sensor and the wireless communication module built into the controller are wirelessly connected through a gateway.
[0054] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.
Claims
1. A diesel generator shaft drive and condition analysis device, characterized in that, include: The actuator receives control commands from the controller and drives the diesel engine shaft to rotate according to the speed, torque, and angle parameters set by the control commands without tripping the generator. It also collects the speed and torque parameters of the diesel engine shaft and uploads them to the controller. The vibration sensor collects the vibration parameters of the diesel engine shaft and uploads them to the controller. The controller sends control commands to the actuator, receives the speed and torque parameters of the diesel engine shaft uploaded by the actuator and the vibration parameters of the diesel engine shaft uploaded by the vibration sensor, and performs state analysis of the diesel engine shaft based on the vibration, speed, and torque parameters. The controller performs diesel engine shaft condition analysis based on the vibration, speed, and torque parameters of the diesel engine shaft, including the following steps: Step 1: Calculate the diesel engine shaft load power consumption according to the following formula: ； In the formula, This indicates the torque parameters of the diesel engine shaft; This indicates the rotational speed parameter of the diesel engine shaft; This indicates the power consumption of the diesel engine shaft under load. Step 2: Extract features from the diesel engine shaft load power consumption parameters. Transform the diesel engine shaft load power consumption parameters to the frequency domain using Fourier transform for analysis. Obtain the frequency points of the diesel engine shaft load power consumption parameter distribution through Fourier transform to obtain the frequency domain features of the diesel engine shaft load power consumption parameters. Step 3: Extract features from the diesel engine shaft vibration parameters. Transform the diesel engine shaft vibration parameters to the frequency domain using Fourier transform for analysis. Obtain the frequency points of the diesel engine shaft vibration parameter distribution through Fourier transform to obtain the frequency domain features of the diesel engine shaft vibration parameters. Step 4: Compare the frequency domain characteristics of the diesel engine shaft load power consumption parameters with the frequency domain characteristics of the diesel engine shaft vibration parameters; when the consistency between the two is greater than 50%, the diesel engine shaft is judged to be in an abnormal state and an alarm is triggered; when the consistency between the two is less than or equal to 50%, the diesel engine shaft is judged to be in an normal state.
2. The diesel generator shaft drive and condition analysis device according to claim 1, characterized in that, The controller has an embedded intelligent analysis system, which includes a control command module and a state analysis module. The vibration sensor collects the vibration parameters of the diesel engine shaft and uploads them to the state analysis module. The driver collects the speed and torque parameters of the diesel engine shaft and uploads them to the state analysis module. The control command module is used to set the torque, speed, angle, torque transmission ratio and speed transmission ratio parameters output by the brushless DC motor (1), and generates control commands based on the set torque, speed, angle, torque transmission ratio and speed transmission ratio parameters output by the brushless DC motor (1) and sends them to the driver. The state analysis module is used to receive the vibration parameters of the diesel engine shaft uploaded by the vibration sensor and the speed and torque parameters of the diesel engine shaft uploaded by the driver, and performs state analysis of the diesel engine shaft based on the vibration, speed and torque parameters of the diesel engine shaft.
3. The diesel generator shaft drive and condition analysis device according to claim 2, characterized in that, The driver includes a brushless DC motor (1), a planetary reducer (2), a speed sensor, and a torque sensor. The output of the brushless DC motor (1) is connected to the input of the planetary reducer (2), and the output of the planetary reducer (2) is connected to the diesel engine shaft interface (4) via a reaction arm (3). The speed sensor collects the diesel engine shaft speed parameters and uploads them to the status analysis module. The torque sensor collects the diesel engine shaft torque parameters and uploads them to the status analysis module. The status analysis module receives the diesel engine shaft speed parameters uploaded by the speed sensor and the diesel engine shaft torque parameters uploaded by the torque sensor. The control command includes a first control command. The control command module generates a first control command based on the torque, speed and angle parameters output by the brushless DC motor (1) and sends it to the brushless DC motor (1). It also generates a second control command based on the torque transmission ratio and speed transmission ratio parameters output by the brushless DC motor (1) and sends it to the planetary reducer (2). The brushless DC motor (1) receives the first control command sent by the control command module and outputs the torque, speed and angle set by the first control command. The planetary reducer (2) receives the second control command sent by the control command module and adjusts the torque transmission ratio and speed transmission ratio output by the brushless DC motor (1) to the values set by the second control command.
4. The diesel generator shaft drive and condition analysis device according to claim 2, characterized in that, The status analysis module is also used for overload and over-threshold alarms of the diesel engine shaft torque; the status analysis module sets the torque threshold and torque overload value of the diesel engine shaft; when the diesel engine shaft torque parameter exceeds the set threshold, the status analysis module issues a diesel engine shaft torque over-threshold alarm; when the diesel engine shaft torque parameter exceeds the set overload value, the status analysis module issues a diesel engine shaft torque overload alarm.
5. The diesel generator shaft drive and condition analysis device according to claim 3, characterized in that, The status analysis module is also used for alarm of the operating parameters of the brushless DC motor (1); the status analysis module acquires the operating parameters of the brushless DC motor (1) in real time and determines whether the operating parameters of the brushless DC motor (1) exceed the set threshold. When the operating parameters of the brushless DC motor (1) exceed the set threshold, the status analysis module will alarm the operating parameters of the brushless DC motor (1); the operating parameters of the brushless DC motor (1) include the operating current of the brushless DC motor (1) and the operating temperature of the brushless DC motor (1).
6. The diesel generator shaft drive and condition analysis device according to claim 3, characterized in that, The intelligent analysis system further includes a database, a status monitoring module, a data statistical analysis module, a system settings module, and a user management module. The speed sensor collects diesel engine shaft speed parameters and uploads them to the status monitoring module; the torque sensor collects diesel engine shaft torque parameters and uploads them to the status monitoring module; the vibration sensor collects diesel engine shaft vibration parameters and uploads them to the status monitoring module. The status monitoring module receives the diesel engine shaft vibration parameters uploaded by the vibration sensor, the diesel engine shaft speed parameters uploaded by the speed sensor, and the diesel engine shaft torque parameters uploaded by the torque sensor, and stores them in the database. It displays the vibration, speed, and torque parameters of the diesel engine shaft in numerical and real-time curve formats. The data statistical analysis module is used for importing, exporting, displaying, filtering, retrieving, and comparing data curves over time periods for the vibration, speed, and torque parameters of the diesel engine shaft. The system settings module is used for gateway settings and network connection settings; the user management module is used for intelligent analysis system user settings and permission management.
7. The diesel generator shaft drive and condition analysis device according to claim 3, characterized in that, The controller is equipped with a touch screen; the speed sensor sends diesel engine shaft speed parameters to the touch screen in real time, the torque sensor sends diesel engine shaft torque parameters to the touch screen in real time, the vibration sensor sends diesel engine shaft vibration parameters to the touch screen in real time, and the status analysis module sends diesel engine shaft status parameters to the touch screen in real time; the touch screen receives and displays the diesel engine shaft speed parameters sent by the speed sensor, the torque parameters sent by the torque sensor, the vibration parameters sent by the vibration sensor, and the status parameters sent by the status analysis module in real time.
8. The diesel generator shaft drive and condition analysis device according to claim 7, characterized in that, The driver also includes a local display module; the speed sensor sends diesel engine shaft speed parameters to the local display module in real time, the torque sensor sends diesel engine shaft torque parameters to the local display module in real time, and the status analysis module sends diesel engine shaft status parameters to the local display module in real time; the local display module receives and displays the diesel engine shaft speed parameters sent by the speed sensor, the diesel engine shaft torque parameters sent by the torque sensor, and the diesel engine shaft status parameters sent by the status analysis module in real time.
9. The diesel generator shaft drive and condition analysis device according to claim 1, characterized in that, The driver has a built-in rechargeable battery that provides power to the driver; the controller has a built-in rechargeable battery that provides power to the controller; and the vibration sensor has a built-in rechargeable battery that provides power to the vibration sensor.