Fan blade fracture monitoring equipment

Abstract

The utility model relates to the related technical field of fan monitoring, and discloses fan blade fracture monitoring equipment, which comprises a main body assembly, and the main body assembly comprises a support shaft; one end, far away from the supporting shaft, of the connecting shaft is rotationally connected with a blade; the connecting shaft is further provided with a monitoring assembly, the monitoring assembly comprises a center piece movably connected to the peripheral side of the connecting shaft, a sliding groove is formed in the center piece, and a sliding block is slidably connected into the sliding groove. By means of the monitoring assembly, the monitoring radar of the device moves towards the periphery under the action of centrifugal force, so that the whole blade is monitored, and when the wind power of the device is not too large, the connecting piece and the monitoring radar fixing piece are connected through the telescopic rod; the threaded rod is controlled to rotate to drive the whole fixing piece to move for monitoring, and the problem that in an existing scheme, a blade is too large, the distance of a monitoring radar is too long, and signals are weak, so that monitoring cannot be achieved possibly is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine monitoring, specifically a wind turbine blade breakage monitoring device. Background Technology

[0002] A fan is a machine that converts mechanical energy into gas kinetic energy and pressure energy to transport gas. Its working principle is mainly divided into impeller type and positive displacement type. In impeller type fans, centrifugal fans accelerate the gas out radially by rotating the impeller, which can provide higher pressure and air volume. Fans can also be divided into industrial fans, building fans, air conditioning fans and other types according to their use. They are widely used in many fields such as industrial production, building ventilation, and air conditioning. Most existing fans are equipped with a monitoring component to monitor the condition of the fan blades, monitor cracks and damage, and thus carry out timely maintenance to prevent breakage.

[0003] Most existing wind turbine blade breakage monitoring devices are fixed to the wind turbine support shaft, monitoring the blades from a fixed position, or they monitor the blades as they rotate. When monitoring the blades, various state data of the blades during rotation can be acquired in real time, such as changes in vibration, stress, and temperature over time. This can more realistically reflect the stress and working condition of the blades in actual operation, helping to detect problems such as fatigue cracks and material wear caused by rotation. When monitoring the wind turbine blades from a fixed position, the monitoring device can transmit data to the main control room via wired or wireless means. The signal transmission distance is relatively short, the possibility of interference is small, and the stability and reliability of data transmission are high, ensuring the accuracy and completeness of the monitoring data. Each method has its advantages and disadvantages. At the same time, both of the above methods have the problem that due to the large area of ​​the blades, fixing the monitoring radar to a single position can easily lead to monitoring blind spots.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a wind turbine blade breakage monitoring device. Through its monitoring components, the device's monitoring radar moves outwards under centrifugal force, thereby monitoring the entire blade. When the wind force is not high, a telescopic rod connects the connecting piece and the monitoring radar fixing piece. This allows the entire fixing piece to move and be monitored by controlling the rotation of the threaded rod. This solves the problem in existing solutions where large blades may result in excessively long radar distances and weak signals, potentially leading to undetected damage.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A wind turbine blade breakage monitoring device includes a main component, which includes a support shaft. A connecting shaft is laterally fixed to the top of the support shaft, and a blade is rotatably connected to the end of the connecting shaft away from the support shaft. A monitoring component is also provided on the connecting shaft. The monitoring component includes a central component movably connected to the outer periphery of the connecting shaft. A sliding groove is provided on the central component, and a slider is slidably connected in the groove. A spring is fixed to one end of the slider, and a fixing component is fixed to the outer surface of the slider. A locking block is fixed on the fixing component. A locking component adapted to the locking block is also provided on the central component, and a monitoring radar is also fixed on the fixing component. A threaded rod is rotatably connected in the groove, and a connecting component is threaded to the outer periphery of the threaded rod. A groove is provided on the connecting component, and a telescopic rod is provided on the fixing component. When the telescopic rod extends, it passes through the fixing component and the slider and is located in the groove. A motor is also provided in the inner cavity of the central component. A bevel gear is fixed to the motor's power shaft, and a bevel gear ring meshing with the bevel gear is rotatably connected in the inner cavity of the central component. A bevel gear meshing with the bevel gear ring is also fixed to the end of the threaded rod screwed into the inner cavity of the central component.

[0008] Preferably, the interconnected slides, sliders, fasteners, locking blocks, locking components, threaded rods, connectors, grooves, telescopic rods, bevel gears, and monitoring radar are arranged in a group, and three groups are arranged in a circular array with the connecting shaft as the center.

[0009] Preferably, the connecting shaft is further provided with an adjustment component, which includes a fixing ring fixed to the outer periphery of the connecting shaft, a snap-fit ​​groove on the blade, a snap-fit ​​component two that matches the snap-fit ​​groove fixed on the center component, a bearing component at the end of the center component away from the snap-fit ​​component two, and the center component is fixedly connected to the outer ring of the bearing component, an electric push rod is fixed on the fixing ring, the telescopic end of the electric push rod is fixed on the inner ring of the bearing component, a limit component one is fixed on the outer periphery of the fixing ring, and a limit component two that matches the limit component one is provided at the end of the bearing component away from the center component.

[0010] Preferably, the contact surfaces of the first limiting member and the second limiting member are arranged in a pointed cone shape.

[0011] Preferably, the outer periphery of the adjustment component is also provided with a housing.

[0012] Compared with the prior art, this utility model provides a wind turbine blade breakage monitoring device, which has the following beneficial effects:

[0013] 1. This utility model, through its adjustable components, allows the monitoring component to perform monitoring in a fixed position or to monitor following the rotation of the blades. When monitoring following the rotation of the blades is required, the electric push rod is controlled to drive the entire central component to rotate, and it is engaged through the second locking component and the locking groove, ultimately achieving synchronous movement between the central component and the blades. Conversely, the electric push rod is pulled back, and the second limiting component on the central component is fixedly connected to the first limiting component, ultimately achieving a fixed position for the central component, thus enabling better monitoring of the wind turbine blades. This solves the problem that most existing solutions only offer one monitoring method: monitoring following the rotation of the blades or monitoring in a fixed position, resulting in insufficient functionality.

[0014] 2. This utility model, through its monitoring components, monitors the blade as it rotates. As the blade rotates, the monitoring radar moves outwards under centrifugal force, thus monitoring the entire blade. When the wind force is not strong, the telescopic rod is activated, extending its telescopic end into the groove of the connector, ultimately connecting the connector and the monitoring radar fixing component. Controlling the rotation of the threaded rod moves the entire fixing component, ultimately causing the monitoring radar to move to both sides. At this point, the radar monitors the blade for any defects, damage, or breakage. This solves the problem in existing solutions where the blade is too large, creating blind spots in the radar's scattering range, leading to potential undetected issues. Furthermore, it can predict the presence of external faults on the wind turbine blades based on environmental conditions, identifying those that cannot be detected by the radar. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the central area of ​​the monitoring component of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the cross-section of the central component groove of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the central component of this utility model;

[0020] Figure 6 This is a schematic diagram of the blade structure of this utility model.

[0021] In the picture:

[0022] 1. Main body component; 11. Support shaft; 12. Connecting shaft; 13. Blade;

[0023] 2. Monitoring components; 21. Central component; 22. Slide rail; 221. Slider; 23. Fixing component; 231. Locking block; 232. Locking component one; 24. Threaded rod; 241. Connecting component; 243. Telescopic rod; 25. Motor; 26. Bevel gear; 261. Bevel gear ring; 27. Monitoring radar;

[0024] 3. Adjustment component; 31. Fixing ring; 32. Snap-fit ​​groove; 33. Snap-fit ​​part two; 34. Bearing component; 35. Electric push rod; 36. Limiting part one; 37. Limiting part two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a wind turbine blade breakage monitoring device.

[0027] Please see Figure 1 - Figure 5 A wind turbine blade 13 breakage monitoring device includes a main component 1, which includes a support shaft 11; a connecting shaft 12 is laterally fixed to the top end of the support shaft 11, and a blade 13 is rotatably connected to the end of the connecting shaft 12 away from the support shaft 11; a monitoring component 2 is also provided on the connecting shaft 12, the monitoring component 2 including a central component 21 movably connected to the outer periphery of the connecting shaft 12, a groove 22 is provided on the central component 21, a slider 221 is slidably connected in the groove 22, a spring is fixed to one end of the slider 221, a fixing component 23 is fixed to the outer surface of the slider 221, a locking block 231 is fixed on the fixing component 23, and a locking member adapted to the locking block 231 is also provided on the central component 21. 232, a monitoring radar 27 is also fixed on the fixing part 23; a threaded rod 24 is rotatably connected in the slide groove 22, and a connector 241 is threadedly connected to the outer periphery of the threaded rod 24. The connector 241 has a groove. A telescopic rod 243 is also provided on the fixing part 23. When the telescopic end of the telescopic rod 243 extends, it passes through the fixing part 23 and the slider 221 and is set in the groove; a motor 25 is also provided in the inner cavity of the center part 21. A bevel gear 26 is fixed on the power shaft of the motor 25. A bevel gear ring 261 that meshes with the bevel gear 26 is also rotatably connected in the inner cavity of the center part 21. A bevel gear 26 that meshes with the bevel gear ring 261 is also fixed at one end of the threaded rod 24 that is screwed into the inner cavity of the center part 21.

[0028] Furthermore, the interconnected slide groove 22, slider 221, fastener 23, locking block 231, locking connector 232, threaded rod 24, connector 241, groove, telescopic rod 243, bevel gear 26 and monitoring radar 27 are arranged in a ring array with the connecting shaft 12 as the center. The device is equipped with three sets of monitoring parts, which can monitor each blade 13 on the wind turbine in real time, so as to prevent failure to make timely judgment when damage or creases occur.

[0029] Furthermore, an adjustment assembly 3 is also provided on the connecting shaft 12. The adjustment assembly 3 includes a fixing ring 31 fixed to the outer periphery of the connecting shaft 12, a snap-fit ​​groove 32 is provided on the blade 13, and a snap-fit ​​part 23 adapted to the snap-fit ​​groove 32 is fixed on the center member 21. A bearing member 34 is provided at the end of the center member 21 away from the snap-fit ​​part 23, and the center member 21 is fixedly connected to the outer ring of the bearing member 34. An electric push rod 35 is also fixed on the fixing ring 31. The telescopic end of the electric push rod 35 is fixed on the inner ring of the bearing member 34. A limit member 1 36 is also fixed on the outer periphery of the fixing ring 31. A limit member 2 37 adapted to the limit member 1 36 is also provided at the end of the bearing member 34 away from the center member 21.

[0030] The adjustment component 3 mainly controls whether the monitoring component 2 rotates with the blade 13. When it is necessary to monitor the blade 13, the entire central component 21 is rotated by controlling the electric push rod 35. The central component 21 is provided with a second snap-fit ​​part 33 that snaps into the blade 13. At the same time, the blade 13 is also provided with a corresponding snap-fit ​​groove 32, so that the monitoring component 2 and the blade 13 are connected and move synchronously with the blade 13. When it is necessary to fix it for monitoring, the electric push rod 35 is pulled back and fixedly connected to the first limit part 36 through the second limit part 37 on the central component 21, so that the central component 21 is fixed in position.

[0031] Furthermore, the contact surfaces of the first limiting member 36 and the second limiting member 37 are set in a pointed cone shape. Since the central member 21 does not have a specific fixed structure and is always in a moving state on the connecting shaft 12, this structure can ensure that the first limiting member 36 and the second limiting member 37 will not be unable to engage due to the presence of a plane at the contact end of the engaging structure when they come into contact.

[0032] Furthermore, the outer periphery of the adjustment component 3 is also provided with a housing, which is used to protect its internal components and reduce wear and tear caused by environmental weather conditions.

[0033] Working principle:

[0034] This product is a device for monitoring the breakage of wind turbine blades 13. It can monitor the status of wind turbine blades 13 in real time. The device is equipped with an adjustment component 3, which can make the monitoring component 2 fixed in position for monitoring and follow the rotation of the blade 13 for monitoring. When it is necessary to follow the rotation of the blade 13 for monitoring, the electric push rod 35 is controlled to drive the entire central component 21 to fit with the wind turbine blade 13. That is, when the wind turbine rotates due to wind force, the central component 21 and other components installed on it rotate together. The central component 21 is provided with a second snap-fit ​​component 33 that snaps into the blade 13. At the same time, the blade 13 is also provided with a corresponding snap-fit ​​groove 32, thereby connecting the monitoring component 2 and the blade 13 and making them move synchronously with the blade 13. When it is necessary to fix it for monitoring, the electric push rod 35 is pulled back, and the second limit component 37 on the central component 21 is fixedly connected to the first limit component 36, thereby fixing the central component 21 in position for better monitoring of the wind turbine blade 13.

[0035] When monitoring the rotation of the blade 13, the center component 21 and the fan blade 13 are fixedly connected by the adjusting component 3. The center component 21 can then rotate with the blade 13. The center component 21 has a groove 22, and a slider 221 is set in the groove 22. A fixing component 23 is fixed on the slider 221, and a monitoring radar 27 is set on the fixing component 23 to monitor the blade 13 in real time. Since the device rotates synchronously with the fan, the monitoring radar 27 and the blade 13 are relatively stationary, preventing insufficient monitoring sensitivity due to excessive rotation speed, which would prevent the identification of detailed cracks. At the same time, since the blade 13 is too large to cover the entire blade 13 well, the monitoring radar 27 moves outward under the action of centrifugal force. When the centrifugal force reaches a certain threshold, the locking block 231 will disengage from the locking component 232 under the action of centrifugal force, and then the compressed spring will move towards the end of the blade 13, thereby monitoring the entire blade 13. The purpose of this is to... The monitoring radar 27 of this device can determine the magnitude of the external wind force based on its own deviation distance under the action of centrifugal force. Then, it monitors various issues such as the vibration speed of the blade 13 during rotation and compares the data with that under normal conditions to further predict whether there are any problems or potential risks that cannot be detected visually. When the wind force is not so strong, the entire blade 13 can be inspected by self-regulation. First, the telescopic rod 243 is activated. The telescopic rod 243 is an electric hydraulic telescopic rod 243. The telescopic end of the rod extends into the groove of the connector 241. The connector 241 is set on the outer periphery of the threaded rod 24, and the threaded rod 24 is rotatably connected to the slide groove 22. It is connected to the slider 221 and the fixing part 23 through the connector 241. By controlling the rotation of the threaded rod 24, the entire fixing part 23 is moved, which ultimately moves the monitoring radar 27 to both sides. At this time, the radar monitors whether there are any gaps, damage or breakage on the appearance of the blade 13.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine blade breakage monitoring apparatus comprising a body assembly (1) characterised in that: The main body assembly (1) comprises a support shaft (11); the top end of the support shaft (11) is transversely fixed with a connecting shaft (12), and the connecting shaft (12) is rotatably connected with a blade (13) at the end away from the support shaft (11); The connecting shaft (12) is further provided with a monitoring assembly (2), the monitoring assembly (2) comprises a central part (21) movably connected to the outer peripheral side of the connecting shaft (12), the central part (21) is provided with a sliding groove (22), the sliding groove (22) is slidably connected with a sliding block (221), one end of the sliding block (221) is fixed with a spring, the outer surface of the sliding block (221) is further fixed with a fixing part (23), the fixing part (23) is fixed with a clamping block (231), the central part (21) is further provided with a clamping part I (232) matched with the clamping block (231), and the fixing part (23) is further fixed with a monitoring radar (27). The sliding groove (22) is further rotatably connected with a threaded rod (24), the outer peripheral side of the threaded rod (24) is threadedly connected with a connecting part (241), the connecting part (241) is provided with a groove, and the fixing part (23) is further provided with an extension rod (243); when the extension rod (243) is stretched out, it penetrates through the fixing part (23) and the sliding block (221) and is arranged in the groove. The inner cavity of the central part (21) is further provided with a motor (25), the power shaft of the motor (25) is fixed with a bevel gear (26), the inner cavity of the central part (21) is further rotatably connected with a bevel gear ring (261) engaged with the bevel gear (26), and one end of the threaded rod (24) rotatably arranged in the inner cavity of the central part (21) is further fixed with a bevel gear (26) engaged with the bevel gear ring (261).

2. A fan blade out monitoring apparatus according to claim 1, characterised in that: The sliding groove (22), the sliding block (221), the fixing part (23), the clamping block (231), the clamping part I (232), the threaded rod (24), the connecting part (241), the groove, the extension rod (243), the bevel gear II and the monitoring radar (27) are a group, and three groups are arranged in a central annular array with the connecting shaft (12) as the center.

3. A fan blade out monitoring apparatus according to claim 1, wherein: The connecting shaft (12) is further provided with an adjusting assembly (3), the adjusting assembly (3) comprises a fixed ring (31) fixed to the outer peripheral side of the connecting shaft (12), the blade (13) is provided with a clamping groove (32), the central part (21) is further fixed with a clamping part II (33) matched with the clamping groove (32), the central part (21) is provided with a bearing part (34) away from the clamping part II (33), and the central part (21) is fixedly connected with the outer ring of the bearing part (34), the fixed ring (31) is further fixed with an electric push rod (35), the telescopic end of the electric push rod (35) is fixed to the inner ring of the bearing part (34), the outer peripheral side of the fixed ring (31) is further fixed with a limiting part I (36), and the end of the bearing part (34) away from the central part (21) is further provided with a limiting part II (37) matched with the limiting part I (36).

4. A fan blade out monitoring apparatus according to claim 3, wherein: The contact surface of the limiting part one (36) and the limiting part two (37) is conically arranged.

5. A fan blade out monitoring apparatus according to claim 3, wherein: The adjusting assembly (3) is further provided with a shell on the outer periphery.

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