Anti-slip wind power blade curved surface strain topology sensing device

Abstract

The utility model belongs to the field of sensing device, concretely relates to an anti -slip wind -powered electricity generation blade curved surface strain topology sensing device, including the groove of being opened in the surface of blade, the inside fixed connection conducting ring of groove, the inside fixed connection of conducting ring has insulating ring, the inside slide connection of insulating ring has sensor, the bottom of sensor and the inside bottom of groove bond, the surface fixed connection of blade has support. The utility model through the slope of circular block and the slope cooperation of pressure bar, can continuously exert elastic pre -tightening force to the pressure disc, cooperate the mechanical plug -in locking of lock pin simultaneously, make sensor always and the recess bottom close adhesion under the complex working condition such as blade high -frequency vibration, centrifugal force and temperature deformation, effectively prevent sensor slip or fall off, ensure the continuity of strain transmission path and the long -term stability of measurement data.

Description

Technical Field

[0001] This utility model relates to the field of sensor deployment device technology, specifically to a topological sensor deployment device for anti-slip wind turbine blade curved surface strain. Background Technology

[0002] Wind turbine blades are key load-bearing components of wind turbines, operating long-term in harsh environments such as high humidity, high salt spray, and strong winds and sandstorms. A search revealed an invention patent with publication number CN104564947A, which discloses a method for attaching stress measurement strain gauges to wind turbine blades. This method involves adding stress measurement strain gauges to the wind turbine blade manufacturing process. Through a specific strain gauge attachment method, the strain gauges are embedded in the wind turbine blades, thereby overcoming malfunctions and damage caused by impacts, vibrations, and high temperatures during actual operation. This provides long-term and effective stress monitoring of the wind turbine blades, allowing for control of the blade's operating speed based on the stress conditions, and ultimately protecting the wind turbine blades.

[0003] Based on the search of the aforementioned patents and the findings of existing technologies, it was discovered that when sensors are deployed on the curved surface of blades, they are susceptible to electromagnetic interference and the effects of temperature and humidity, resulting in problems such as slippage and detachment of the adhesive. Utility Model Content

[0004] The purpose of this invention is to provide an anti-slip wind turbine blade curved surface strain topology sensing deployment device, which solves the problem that existing wind turbine blade strain sensors are prone to slippage and detachment in harsh environments.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a topological sensing device for anti-slip wind turbine blade curved surface strain, comprising a groove formed on the blade surface, a conductive ring fixedly connected to the inner side of the groove, an insulating ring fixedly connected to the inner side of the conductive ring, a sensor slidably connected to the inner side of the insulating ring, the bottom of the sensor being bonded to the bottom of the inner side of the groove, a bracket fixedly connected to the surface of the blade, the bracket being L-shaped, a sliding column slidably connected inside the horizontal part of the bracket, the sliding column penetrating the bracket, a pressure plate fixedly connected to the end of the sliding column, the bottom of the pressure plate abutting against the sensor, a washer fixedly connected to the middle section of the sliding column, a pressure rod fixedly connected to the upper left side of the washer, the top of the pressure rod having an arc surface, a rotating shaft mounted inside the horizontal part of the bracket and located on the left side of the sliding column via a bearing, a sloping circular block fixedly connected to the lower end of the rotating shaft, the bottom of the sloping circular block having an sloping surface, and the sloping part of the sloping circular block slidably connected to the arc surface of the pressure rod.

[0006] Preferably, a pad is fixedly connected to the top edge of the conductive ring, and a wound lightning rod is fixedly connected to the upper end of the pad. The conductive ring serves as part of the grounding path, while the wound lightning rod provides a stable winding terminal, facilitating the connection and fixation of the lightning conductor inside the blade. This ensures that lightning energy does not accumulate near the sensor, improving the system's survivability under thunderstorm conditions.

[0007] Preferably, a spring is fitted around the outer side of the sliding column. One end of the spring is fixedly connected to a washer, and the other end is fixedly connected to the horizontal part of the bracket in contact with it. The spring provides auxiliary resetting for the sliding column and the pressure plate.

[0008] Preferably, a corrugated sleeve is fitted around the outer side of the sliding column. One end of the corrugated sleeve is fixedly connected to a washer ring, and the other end is fixedly connected to the horizontal part of the bracket, abutting against it. The corrugated sleeve is located outside the spring. The corrugated sleeve isolates the spring from the external environment, preventing sand and moisture from entering the spring gap and causing the spring to jam, rust, or break due to fatigue, thus ensuring the reliability of long-term mechanical operation.

[0009] Preferably, a turntable is fixedly connected to the top of the rotating shaft, and a handle is fixedly connected to the top center of the turntable. A locking pin is slidably connected to the left side inside the turntable, and the locking pin penetrates the turntable. The lower end of the locking pin is inserted into the upper surface of the horizontal part of the bracket, and a magnetic ring is fixedly connected to the top of the locking pin. The magnetic ring is attracted to the upper surface of the turntable. A pull ring is fixedly connected to the upper end of the magnetic ring. Rotating the turntable by the handle drives the rotating shaft and the inclined block to rotate. By using the inclined surface to squeeze the pressure rod, the sliding column can be quickly driven down to lock the sensor; conversely, it releases the sensor.

[0010] Preferably, a retaining ring is fixedly connected to the lower section of the locking pin, and a second spring is sleeved on the outer side of the locking pin. One end of the second spring is fixedly connected to the retaining ring, and the other end of the second spring is fixedly connected to the bottom of the turntable. The second spring has an auxiliary resetting function for the locking pin.

[0011] Preferably, a second corrugated sleeve is fitted around the outer side of the locking pin. One end of the second corrugated sleeve is fixedly connected to the retaining ring, and the other end is fixedly connected to the bottom of the turntable. The second corrugated sleeve is located outside the second spring. The second corrugated sleeve has the same function as the first corrugated sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses the inclined circular block and the inclined surface of the pressure rod to continuously apply elastic preload to the pressure plate. At the same time, the mechanical insertion and locking of the locking pin ensures that the sensor is always in close contact with the bottom of the groove under complex working conditions such as high-frequency vibration of the blade, centrifugal force and temperature deformation, effectively preventing the sensor from slipping or falling off, and ensuring the continuity of the strain transmission path and the long-term stability of the measurement data.

[0013] 2. This utility model integrates the conductive ring, insulating ring and sensor in the same groove, realizing the integration of strain monitoring and lightning protection functions, effectively preventing lightning current from entering the signal circuit and damaging the sensing element. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 This utility model Figure 1 A front sectional view; Figure 3 This utility model Figure 2 Enlarged view of point A; Figure 4 This utility model Figure 1 A partial structural diagram.

[0015] In the diagram: 1. Blade; 2. Conductive ring; 201. Pad; 202. Winded lightning rod; 3. Insulating ring; 4. Sensor; 5. Bracket; 6. Sliding column; 7. Pressure plate; 8. Washer ring; 9. Pressure rod; 10. Spring 1; 11. Corrugated sleeve 1; 12. Rotating shaft; 13. Inclined circular block; 14. Turntable; 15. Rotating handle; 16. Locking pin; 17. Magnetic ring; 18. Pull ring; 19. Retaining ring; 20. Spring 2; 21. Corrugated sleeve 2. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-4A topological sensing device for anti-slip wind turbine blade surface strain includes a groove formed on the surface of the blade 1. A conductive ring 2 is fixedly connected to the inner side of the groove, and an insulating ring 3 is fixedly connected to the inner side of the conductive ring 2. A sensor 4 is slidably connected to the inner side of the insulating ring 3. The bottom of the sensor 4 is bonded to the bottom of the inner side of the groove. A pad 201 is fixedly connected to the top edge of the conductive ring 2, and a wound lightning rod 202 is fixedly connected to the upper end of the pad 201. The conductive ring 2 serves as part of the grounding path, and the wound lightning rod 202 provides a stable winding terminal, facilitating the connection and fixation of the lightning conductor inside the blade 1. This ensures that lightning energy does not accumulate near the sensor 4, improving the system's survivability under thunderstorm conditions.

[0018] Please see Figures 1-3 A bracket 5 is fixedly connected to the surface of blade 1. The bracket 5 is L-shaped. A sliding column 6 is slidably connected inside the horizontal part of the bracket 5, and the sliding column 6 penetrates through the bracket 5. A pressure plate 7 is fixedly connected to the end of the sliding column 6. The bottom of the pressure plate 7 abuts against the sensor 4. A washer 8 is fixedly connected to the middle section of the column of the sliding column 6. A pressure rod 9 is fixedly connected to the upper left side of the washer 8. The top of the pressure rod 9 has an arc surface. A rotating shaft 12 is mounted on the left side of the horizontal part of the bracket 5 via a bearing. A inclined circular block 13 is fixedly connected to the lower end of the rotating shaft 12. The bottom of the inclined circular block 13 has an inclined surface. The inclined surface of the inclined circular block 13 is slidably connected to the arc surface of the pressure rod 9. A spring 10 is sleeved on the outer side of the column of the sliding column 6. One end of the spring 10 is fixedly connected to the washer 8, and the other end of the spring 10 is fixedly connected to the horizontal part of the bracket 5 and abuts against it. The spring 10 has an auxiliary reset function for the sliding column 6 and the pressure plate 7. A corrugated sleeve 11 is fitted on the outer side of the sliding column 6. One end of the corrugated sleeve 11 is fixedly connected to the washer 8, and the other end of the corrugated sleeve 11 is fixedly connected to the horizontal part of the bracket 5 and abuts against it. The corrugated sleeve 11 is located outside the spring 10. The corrugated sleeve 11 isolates the spring 10 from the external environment, preventing sand and moisture from entering the spring gap and causing the spring 10 to jam, rust, or fatigue break, thus ensuring the reliability of long-term mechanical operation.

[0019] Please see Figures 1-3A turntable 14 is fixedly connected to the top of the rotating shaft 12. A handle 15 is fixedly connected to the top center of the turntable 14. A locking pin 16 is slidably connected to the left side inside the turntable 14, and the locking pin 16 is set through the turntable 14. The lower end of the locking pin 16 is inserted into the upper surface of the horizontal part of the bracket 5. A magnetic ring 17 is fixedly connected to the top of the locking pin 16, and the magnetic ring 17 is attracted to the upper surface of the turntable 14. A pull ring 18 is fixedly connected to the upper end of the magnetic ring 17. Rotating the turntable 14 by the handle 15 drives the rotating shaft 12 and the inclined block 13 to rotate. By using the inclined surface to squeeze the pressure rod 9, the sliding column 6 can be quickly driven to press down and lock the sensor 4; otherwise, it is released. A retaining ring 19 is fixedly connected to the lower section of the locking pin 16. A second spring 20 is sleeved on the outside of the locking pin 16. One end of the second spring 20 is fixedly connected to the retaining ring 19, and the other end of the second spring 20 is fixedly connected to the bottom of the turntable 14. Spring 20 assists in the reset of locking pin 16. A corrugated sleeve 21 is fitted around the outer side of the locking pin 16. One end of the corrugated sleeve 21 is fixedly connected to the retaining ring 19, and the other end is fixedly connected to the bottom of the turntable 14. The corrugated sleeve 21 is located outside spring 20. The corrugated sleeve 21 has the same function as corrugated sleeve 11.

[0020] The specific implementation process of this utility model is as follows: First, a groove matching the shape of the sensor 4 is opened at a predetermined monitoring point on the surface of the blade 1. Then, the conductive ring 2 is fixedly connected to the inside of the groove, and the insulating ring 3 is fixedly connected to the inside of the conductive ring 2. The conductive ring 2 serves as a grounding path, while the insulating ring 3 provides electrical isolation between the conductive ring 2 and the sensor 4, preventing lightning current or stray current from interfering with the sensing signal. Then, the sensor 4 is slid into the groove from the inside of the insulating ring 3 until the bottom of the sensor 4 contacts the bottom of the groove. At this time, the working surface of the sensor 4 is in close contact with the curved surface of the blade 1, ensuring the effectiveness of strain transmission. Subsequently, the operator holds the handle 15 and rotates the turntable 14. The turntable 14 drives the rotating shaft 12 to rotate, and the inclined circular block 13 at the lower end of the rotating shaft 12 rotates accordingly. The inclined surface at the bottom of the inclined circular block 13 slides into contact with the arc surface at the top of the pressure rod 9. As the inclined circular block 13 rotates, the contact point between the inclined surface and the arc surface slides from the lower to the higher, thereby pressing the pressure rod 9 downward. The pressure rod 9 drives the washer ring 8 and the sliding column 6 to move downward. The pressure plate 7 at the end of the sliding column 6 descends accordingly until the bottom of the pressure plate 7 is in close contact with the upper surface of the sensor 4. When the sensor 4 is locked in place, the operator releases the pull ring 18. The locking pin 16 slides downward automatically under the elastic force of the spring 20. Its lower end is inserted into the corresponding positioning hole on the upper surface of the horizontal part of the bracket 5 to prevent the turntable 14 from rotating in the opposite direction. The magnetic ring 17 at the top of the locking pin 16 attracts the upper surface of the turntable 14, providing additional attraction force to prevent the locking pin 16 from jumping upward and dislodging from the positioning hole due to vibration. Spring 20 and magnetic ring 17 form a dual anti-disengagement locking mechanism to ensure that turntable 14 will not rotate unexpectedly under the long-term high-frequency vibration environment of blade 1, thereby ensuring the stability of sensor 4 installation.

[0021] 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 topological sensing deployment device for anti-slip wind turbine blade curved surface strain, characterized in that: The device includes a groove formed on the surface of a blade (1), a conductive ring (2) fixedly connected to the inner side of the groove, an insulating ring (3) fixedly connected to the inner side of the conductive ring (2), a sensor (4) slidably connected to the inner side of the insulating ring (3), the bottom of the sensor (4) being bonded to the bottom of the inner side of the groove, a bracket (5) fixedly connected to the surface of the blade (1), the bracket (5) being L-shaped, a sliding column (6) slidably connected inside the horizontal part of the bracket (5), and the sliding column (6) being set through the bracket (5), and a pressure plate (7) fixedly connected to the end of the sliding column (6). The bottom of the pressure plate (7) abuts against the sensor (4). A washer (8) is fixedly connected to the middle section of the column of the sliding column (6). A pressure rod (9) is fixedly connected to the upper left side of the washer (8). The top of the pressure rod (9) is provided with an arc surface. A rotating shaft (12) is installed inside the horizontal part of the bracket (5) and on the left side of the sliding column (6) through a bearing. A inclined circular block (13) is fixedly connected to the lower end of the rotating shaft (12). An inclined surface is provided at the bottom of the inclined circular block (13). The inclined surface of the inclined circular block (13) is slidably connected to the arc surface of the pressure rod (9).

2. The anti-slip wind turbine blade curved surface strain topology sensing deployment device according to claim 1, characterized in that: A pad (201) is fixedly connected to the top edge of the conductive ring (2), and a wound lightning rod (202) is fixedly connected to the upper end of the pad (201).

3. The anti-slip wind turbine blade curved surface strain topology sensing deployment device according to claim 1, characterized in that: A spring (10) is fitted on the outer side of the sliding column (6). One end of the spring (10) is fixedly connected to the washer (8), and the other end of the spring (10) is fixedly connected to the horizontal part of the bracket (5) to abut.

4. The anti-slip wind turbine blade curved surface strain topology sensing deployment device according to claim 3, characterized in that: The outer side of the sliding column (6) is fitted with a corrugated sleeve (11). One end of the corrugated sleeve (11) is fixedly connected to the washer (8), and the other end of the corrugated sleeve (11) is fixedly connected to the horizontal part of the bracket (5) and abuts against it. The corrugated sleeve (11) is located outside the spring (10).

5. The anti-slip wind turbine blade curved surface strain topology sensing deployment device according to claim 1, characterized in that: The top of the rotating shaft (12) is fixedly connected to a turntable (14), and the top center of the turntable (14) is fixedly connected to a handle (15). A locking pin (16) is slidably connected to the left side inside the turntable (14), and the locking pin (16) is set through the turntable (14). The lower end of the locking pin (16) is inserted into the upper surface of the horizontal part of the bracket (5). A magnetic ring (17) is fixedly connected to the top of the locking pin (16), and the magnetic ring (17) is attracted to the upper surface of the turntable (14).

6. The anti-slip wind turbine blade curved surface strain topology sensing deployment device according to claim 5, characterized in that: The lower section of the locking pin (16) is fixedly connected to a retaining ring (19), and a second spring (20) is sleeved on the outside of the locking pin (16). One end of the second spring (20) is fixedly connected to the retaining ring (19), and the other end of the second spring (20) is fixedly connected to the bottom of the turntable (14).

7. The anti-slip wind turbine blade curved surface strain topology sensing deployment device according to claim 6, characterized in that: The locking pin (16) has a corrugated sleeve (21) on its outer side. One end of the corrugated sleeve (21) is fixedly connected to the retaining ring (19), and the other end of the corrugated sleeve (21) is fixedly connected to the bottom of the turntable (14). The corrugated sleeve (21) is located outside the spring (20).

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