A fan on-line vibration monitoring sensor device

Abstract

This utility model belongs to the field of wind turbine vibration monitoring technology, and in particular, it is a wind turbine online vibration monitoring sensor device. It includes an online wind turbine vibration monitoring system and an installation end face. The online wind turbine vibration monitoring system includes a processor, a sensor group, a signal conditioning module, a data acquisition module, and a data analysis and processing module, which are sequentially connected. This utility model has a reasonable structural design, allowing simultaneous rotation of four shafts. This enables the limiting blocks to rotate synchronously to align with the limiting holes, facilitating quick and efficient installation and disassembly of the connecting plate and sensors, improving installation efficiency. By screwing screws into two threaded grooves at different front and rear positions, the front and rear positions of the sensors can be adjusted to regulate the distance between the sensors and the wind turbine components being monitored, thereby improving monitoring accuracy.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine vibration monitoring technology, and in particular to an online vibration monitoring sensor device for wind turbines. Background Technology

[0002] Fans, as rotating machinery, are widely used in industries such as metallurgy, chemical engineering, and power generation. Due to their high rotational speeds, fans generate significant vibration and noise, making them prone to malfunctions. Failure to promptly address malfunctions in induced draft fans can lead not only to equipment shutdowns but also potentially to serious consequences such as mechanical failure and loss of life. In continuous production systems like coal mines and power plants, fans are critical equipment; vibration-induced malfunctions that prevent operation can disrupt the entire plant's production system, causing substantial economic losses and sometimes posing a significant threat to the safety of nearby personnel. Currently, vibration sensors used for fan measurement are generally of two types: non-contact eddy current sensors and velocity or acceleration sensors. Eddy current sensors are typically used to measure shaft vibration, while velocity or acceleration sensors are used to measure bearing vibration.

[0003] However, existing online vibration monitoring sensor devices for wind turbines have shortcomings. The sensors are installed next to the wind turbine components being monitored using several fastening screws, which requires tightening or loosening each screw during installation and removal. This makes installation and removal cumbersome and inconvenient, reduces installation efficiency, and makes it difficult to adjust the installation position. Consequently, it is also difficult to adjust the distance between the sensor and the wind turbine components being monitored, reducing the accuracy of vibration monitoring. Therefore, we propose an online vibration monitoring sensor device for wind turbines to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings mentioned above by proposing an online vibration monitoring sensor device for wind turbines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wind turbine online vibration monitoring sensor device includes a wind turbine online vibration monitoring system and an installation end face. The wind turbine online vibration monitoring system includes a processor, a sensor group, a signal conditioning module, a data acquisition module, and a data analysis and processing module. The sensor group, signal conditioning module, data acquisition module, processor, and data analysis and processing module are connected sequentially. The sensor group includes an eddy current sensor and an acceleration sensor. Two connecting plates are provided on the top of the installation end face. A high-efficiency disassembly and assembly mechanism is provided between the installation end face and the connecting plates. Adjustment mechanisms are provided between the connecting plates and the eddy current sensor and between the connecting plates and the acceleration sensor.

[0007] As a preferred embodiment of this invention, the online vibration monitoring system for wind turbines further includes a fault early warning module and a fault diagnosis module, both of which are electrically connected to the processor.

[0008] As a preferred embodiment of this invention, the online vibration monitoring system for wind turbines further includes a data storage module and a wireless communication module, both of which are electrically connected to the processor.

[0009] As a preferred embodiment of this utility model, the efficient disassembly and assembly mechanism includes a return spring fixedly connected to the inner wall of the front side of the mounting end face, and four rotating shafts rotatably connected to the inner wall of the bottom side of the mounting end face. The top of the connecting plate has four through holes, and limit holes are provided on the inner walls of both sides of the through holes. Limit blocks are fixedly connected to the front and rear sides of the rotating shafts, and the limit blocks movably abut against the top of the connecting plate. A sliding plate is fixedly connected to the rear end of the return spring, and racks are fixedly connected to both sides of the sliding plate. A gear is fixedly sleeved on the outer side of the rotating shaft, and two racks mesh with corresponding gears. The same torsion spring is fixedly connected between the gear and the mounting end face. A pull rod is fixedly connected to the front side of the sliding plate, and the limit holes cooperate with the limit blocks.

[0010] As a preferred embodiment of this utility model, a pull plate is fixedly connected to the front end of the pull rod, and a handle is fixedly connected to the front side of the pull plate.

[0011] As a preferred embodiment of this utility model, four guide rods are fixedly connected to the inner walls of the front and rear sides of the mounting end face, and the sliding plate is slidably sleeved on the outside of the four guide rods.

[0012] In a preferred embodiment of this invention, the reset spring is sleeved on the outside of the pull rod, the torsion spring is sleeved on the outside of the rotating shaft, and four bearings are fixedly connected to the bottom inner wall of the mounting end face, with the four rotating shafts respectively fixedly sleeved in the corresponding bearings.

[0013] As a preferred embodiment of this utility model, the adjustment mechanism includes a fixed frame and a mounting block fixedly connected to the top of the connecting plate. The two fixed frames are respectively fixedly connected to the bottom of the eddy current sensor and the acceleration sensor. Screws are threadedly connected to both sides of the fixed frame. Multiple threaded grooves are opened on both sides of the mounting block, and two screws are respectively threadedly connected to the corresponding threaded grooves.

[0014] In this utility model, the online vibration monitoring sensor device for a wind turbine is described. During sensor installation, a sliding plate is pushed backward by a pull plate and a pull rod. The sliding plate drives two racks to move backward. When the pull plate abuts against the front side of the mounting end face, the two racks drive four gears and the rotating shaft to rotate 90 degrees, aligning the limiting block with the limiting hole. This prevents the limiting block from limiting and fixing the connecting plate. At this point, the connecting plate and the sensor can be removed from the mounting end face for inspection and maintenance. After maintenance, the four through holes of the connecting plate are aligned with the rotating shaft, and the limiting blocks are aligned with the limiting holes. The connecting plate is then placed on the mounting end face, with the rotating shaft and limiting blocks passing through the through holes and limiting holes respectively. The pull plate is then released. Under the action of the torsion spring and the return spring, the four rotating shafts reverse 90 degrees to reset. Simultaneously, the sliding plate and the pull rod move forward to reset. The rotating shaft drives the two limiting blocks to rotate to the front and rear sides, offset from the limiting holes, thereby allowing the connecting plate to be misaligned and locked in place.

[0015] In this utility model, the online vibration monitoring sensor device for wind turbines can adjust the front and rear positions of the sensor by screwing a screw into two threaded grooves at different front and rear positions, so as to adjust the distance between the sensor and the wind turbine component to be monitored, thereby improving the accuracy of monitoring.

[0016] This utility model has a reasonable structural design and can synchronously drive four rotating shafts to rotate, so that the limiting block rotates synchronously to the position aligned with the limiting hole. This facilitates the quick and efficient installation and disassembly of the connecting plate and the sensor, improving installation efficiency. By screwing the screw into the two threaded grooves at different front and rear positions, the front and rear position of the sensor can be adjusted to adjust the distance between the sensor and the fan component to be monitored, thereby improving the accuracy of monitoring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an online vibration monitoring sensor device for wind turbines proposed in this utility model;

[0018] Figure 2 This is a partial cross-sectional view of an online vibration monitoring sensor device for wind turbines proposed in this utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0020] Figure 4 This is a connection diagram of an online vibration monitoring sensor device for wind turbines proposed in this utility model.

[0021] In the diagram: 1. Mounting end face; 2. Connecting plate; 3. Eddy current sensor; 4. Accelerometer; 5. High-efficiency disassembly and assembly mechanism; 6. Adjustment mechanism; 501. Pull rod; 502. Pull plate; 503. Return spring; 504. Guide rod; 505. Slide plate; 506. Rack; 507. Rotating shaft; 508. Gear; 509. Torsion spring; 510. Limiting hole; 511. Bearing; 512. Through hole; 513. Limiting block; 61. Mounting block; 62. Threaded groove; 63. Screw; 64. Fixing bracket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4 A wind turbine online vibration monitoring sensor device includes a wind turbine online vibration monitoring system and an installation end face 1. The wind turbine online vibration monitoring system includes a processor, a sensor group, a signal conditioning module, a data acquisition module, and a data analysis and processing module. The sensor group, signal conditioning module, data acquisition module, processor, and data analysis and processing module are connected sequentially. The sensor group includes an eddy current sensor 3 and an acceleration sensor 4. Two connecting plates 2 are provided on the top of the installation end face 1. A high-efficiency disassembly and assembly mechanism 5 is provided between the installation end face 1 and the connecting plates 2. Adjustment mechanisms 6 are provided between the connecting plates 2 and the eddy current sensor 3 and between the connecting plates 2 and the acceleration sensor 4. The wind turbine online vibration monitoring system also includes a fault early warning module and a fault diagnosis module. Both the fault early warning module and the fault diagnosis module are electrically connected to the processor. The wind turbine online vibration monitoring system also includes a data storage module and a wireless communication module. Both the data storage module and the wireless communication module are electrically connected to the processor.

[0024] The above scheme employs a sensor group consisting of an eddy current sensor 3 and an accelerometer 4. The eddy current sensor 3 measures the vibration of the fan shaft, while the accelerometer 4 measures the vibration of the fan bearings. The signal conditioning module isolates, amplifies, compensates for, and transforms the signals collected by the sensor group to improve signal quality and stability, ensuring that the signal is not distorted or attenuated during transmission. The data acquisition module converts the conditioned analog signal into a digital signal. The data analysis and processing module analyzes and processes the transmitted vibration data, extracting characteristic parameters related to fan vibration, such as vibration amplitude, frequency, and phase. By analyzing these characteristic parameters, the operating status of the fan can be determined, and the presence, type, and location of faults can be identified. The wireless communication module transmits the collected vibration data to a remote monitoring center or local monitoring terminal. The fault early warning module, through analysis of the vibration data, can promptly issue an alarm signal when abnormal fan vibration is detected, reminding operators to take appropriate measures. The fault diagnosis module can diagnose the type, location, and severity of fan faults, providing maintenance personnel with accurate fault information to help them quickly locate and eliminate faults.

[0025] Furthermore, refer to Figures 1-3 The high-efficiency disassembly and assembly mechanism 5 includes a return spring 503 fixedly connected to the inner wall of the front side of the mounting end face 1, and four rotating shafts 507 rotatably connected to the inner wall of the bottom of the mounting end face 1. The top of the connecting plate 2 has four through holes 512, and limit holes 510 are formed on the inner walls of both sides of each through hole 512. Limit blocks 513 are fixedly connected to the front and rear sides of each rotating shaft 507, and the limit blocks 513 movably abut against the top of the connecting plate 2. A sliding plate 505 is fixedly connected to the rear end of the return spring 503. Both sides of the slide plate 505 are fixedly connected to racks 506. A gear 508 is fixedly sleeved on the outer side of the rotating shaft 507. The two racks 506 mesh with the corresponding gears 508 respectively. The same torsion spring 509 is fixedly connected between the gear 508 and the mounting end face 1. A pull rod 501 is fixedly connected to the front side of the slide plate 505. The limiting hole 510 cooperates with the limiting block 513. A pull plate 502 is fixedly connected to the front end of the pull rod 501. A handle is fixedly connected to the front side of the pull plate 502.

[0026] Using the above scheme: When installing the sensor, the sliding plate 505 is pushed backward by the pull plate 502 and the pull rod 501. The sliding plate 505 drives the two racks 506 to move backward. When the pull plate 502 abuts against the front side of the mounting end face 1, the two racks 506 drive the four gears 508 and the rotating shaft 507 to rotate 90 degrees, so that the limiting block 513 and the limiting hole 510 are aligned vertically. This prevents the limiting block 513 from limiting and fixing the connecting plate 2. At this time, the connecting plate 2 and the sensor can be removed from the mounting end face 1 for inspection and maintenance. After maintenance, the repaired... Align the four through holes 512 of the connecting plate 2 with the rotating shaft 507, align the limiting block 513 with the limiting hole 510, and place the connecting plate 2 on the mounting end face 1. At this time, the rotating shaft 507 and the limiting block 513 pass through the through hole 512 and the limiting hole 510 respectively. Then release the pull plate 502. At this time, under the action of the torsion spring 509 and the return spring 503, the four rotating shafts 507 reverse 90 degrees to reset. At the same time, the slide plate 505 and the pull rod 501 move forward to reset. The rotating shaft 507 drives the two limiting blocks 513 to rotate to the front and rear sides to be offset from the limiting hole 510, so that the connecting plate 2 can be misaligned and fixed.

[0027] Furthermore, four guide rods 504 are fixedly connected to the inner walls of the front and rear sides of the mounting end face 1. The slide plate 505 is slidably sleeved on the outside of the four guide rods 504. The return spring 503 is sleeved on the outside of the pull rod 501. The torsion spring 509 is sleeved on the outside of the rotating shaft 507. Four bearings 511 are fixedly connected to the inner wall of the bottom of the mounting end face 1. The four rotating shafts 507 are respectively fixedly sleeved in the corresponding bearings 511, which facilitates the guidance of the return spring 503, the torsion spring 509 and the slide plate 505, making their movement more stable. At the same time, it can support the rotating shaft 507, making its rotation more stable.

[0028] Furthermore, refer to Figures 1-3 The adjustment mechanism 6 includes a fixed frame 64 and a mounting block 61 fixedly connected to the top of the connecting plate 2. The two fixed frames 64 are respectively fixedly connected to the bottom of the eddy current sensor 3 and the acceleration sensor 4. Screws 63 are threadedly connected to both sides of the fixed frame 64. Multiple threaded grooves 62 are opened on both sides of the mounting block 61, and two screws 63 are respectively threadedly connected to the corresponding threaded grooves 62.

[0029] By adopting the above solution, the front and rear positions of the sensor can be adjusted by screwing the screw 63 into the two threaded grooves 62 at different front and rear positions, so as to adjust the distance between the sensor and the fan component to be monitored, thereby improving the accuracy of monitoring.

[0030] In this invention, during sensor installation, the sliding plate 505 is pushed backward via the pull plate 502 and pull rod 501. The sliding plate 505 drives the two racks 506 to move backward. When the pull plate 502 abuts against the front side of the mounting end face 1, the two racks 506 drive the four gears 508 and the rotating shaft 507 to rotate 90 degrees, aligning the limiting block 513 with the limiting hole 510. This prevents the limiting block 513 from limiting and fixing the connecting plate 2. At this point, the connecting plate 2, along with the sensor, can be removed from the mounting end face 1 for inspection and maintenance. After maintenance, the four through holes 512 of the connecting plate 2 are aligned with the rotating shaft 507, and the limiting block 513 is aligned with the limiting hole 510. Place the connecting plate 2 on the mounting end face 1. At this time, the rotating shaft 507 and the limiting block 513 pass through the through hole 512 and the limiting hole 510 respectively. Then, release the pull plate 502. At this time, under the action of the torsion spring 509 and the return spring 503, the four rotating shafts 507 reverse 90 degrees to reset. At the same time, the sliding plate 505 and the pull rod 501 move forward to reset. The rotating shaft 507 drives the two limiting blocks 513 to rotate to the front and rear sides and be offset from the limiting hole 510. Then, the connecting plate 2 can be fixed by misalignment. By screwing the screw 63 into the two threaded grooves 62 at different front and rear positions, the front and rear positions of the sensor can be adjusted to adjust the distance between the sensor and the fan component to be monitored, so as to improve the accuracy of monitoring.

Claims

1. An online vibration monitoring sensor device for a fan, characterized by The system includes an online vibration monitoring system for wind turbines and an installation end face (1). The online vibration monitoring system for wind turbines includes a processor, a sensor group, a signal conditioning module, a data acquisition module, and a data analysis and processing module. The sensor group, signal conditioning module, data acquisition module, processor, and data analysis and processing module are connected in sequence. The sensor group includes an eddy current sensor (3) and an acceleration sensor (4). Two connecting plates (2) are provided on the top of the installation end face (1). A high-efficiency disassembly and assembly mechanism (5) is provided between the installation end face (1) and the connecting plates (2). Adjustment mechanisms (6) are provided between the connecting plates (2) and the eddy current sensor (3) and between the connecting plates (2) and the acceleration sensor (4).

2. The online vibration monitoring sensor device for wind turbines according to claim 1, characterized in that, The wind turbine online vibration monitoring system also includes a fault early warning module and a fault diagnosis module, both of which are electrically connected to the processor.

3. The online vibration monitoring sensor device for wind turbines according to claim 1, characterized in that, The wind turbine online vibration monitoring system also includes a data storage module and a wireless communication module, both of which are electrically connected to the processor.

4. The online vibration monitoring sensor device for wind turbines according to claim 1, characterized in that, The efficient disassembly and assembly mechanism (5) includes a return spring (503) fixedly connected to the inner wall of the front side of the mounting end face (1), and four rotating shafts (507) rotatably connected to the inner wall of the bottom of the mounting end face (1). The top of the connecting plate (2) is provided with four through holes (512), and limit holes (510) are provided on the inner walls of both sides of the through holes (512). Limit blocks (513) are fixedly connected to the front and rear sides of the rotating shafts (507). The limit blocks (513) movably abut against the top of the connecting plate (2). The return spring... The rear end of (503) is fixedly connected to a slide plate (505), and racks (506) are fixedly connected to both sides of the slide plate (505). A gear (508) is fixedly sleeved on the outer side of the rotating shaft (507). The two racks (506) mesh with the corresponding gears (508) respectively. The gears (508) and the mounting end face (1) are fixedly connected to the same torsion spring (509). A pull rod (501) is fixedly connected to the front side of the slide plate (505). The limiting hole (510) cooperates with the limiting block (513).

5. The online vibration monitoring sensor device for wind turbines according to claim 4, characterized in that, The front end of the pull rod (501) is fixedly connected to a pull plate (502), and a handle is fixedly connected to the front side of the pull plate (502).

6. The online vibration monitoring sensor device for wind turbines according to claim 4, characterized in that, Four guide rods (504) are fixedly connected to the inner walls of the front and rear sides of the mounting end face (1), and the sliding plate (505) is slidably sleeved on the outside of the four guide rods (504).

7. The online vibration monitoring sensor device for wind turbines according to claim 4, characterized in that, The reset spring (503) is sleeved on the outside of the pull rod (501), the torsion spring (509) is sleeved on the outside of the rotating shaft (507), and four bearings (511) are fixedly connected to the bottom inner wall of the mounting end face (1), and the four rotating shafts (507) are respectively fixedly sleeved in the corresponding bearings (511).

8. The online vibration monitoring sensor device for wind turbines according to claim 1, characterized in that, The adjustment mechanism (6) includes a fixed frame (64) and a mounting block (61) fixedly connected to the top of the connecting plate (2). The two fixed frames (64) are respectively fixedly connected to the bottom of the eddy current sensor (3) and the acceleration sensor (4). Screws (63) are threadedly connected to both sides of the fixed frame (64). Multiple threaded grooves (62) are opened on both sides of the mounting block (61). Two screws (63) are threadedly connected to the corresponding threaded grooves (62).

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