Fan blade defect monitoring device based on voiceprint recognition

Abstract

The utility model discloses a fan blade defect monitoring device based on voiceprint recognition, and particularly relates to the technical field of voiceprint monitoring, the fan blade defect monitoring device comprises a voiceprint monitoring device, a protection mechanism is arranged outside the voiceprint monitoring device, and a dustproof mechanism is arranged above the protection mechanism; the protection mechanism comprises a bearing frame and side supporting plates installed on the four sides of the bearing frame. Through the linkage design of the counterweight sliding block and the transmission oil cylinder in the protection mechanism, hydraulic transmission is triggered when the rotating speed of the fan blade is abnormal, the pressing plate is pushed to apply extra downward pressure to the voiceprint monitoring equipment, the stability of the device under high-speed centrifugal force is improved, and the equipment is prevented from loosening or falling off; meanwhile, the dustproof mechanism drives a dustproof net to periodically move up and down to achieve self-cleaning by utilizing the synergistic effect of an elastic piece and centrifugal force, vibration noise is absorbed through a buffer gasket, dust blockage and voiceprint signal interference are effectively prevented, and monitoring continuity and accuracy are both considered.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of voiceprint monitoring, especially a fan blade defect monitoring device based on voiceprint recognition. BACKGROUND

[0002] The fan blade defect monitoring device based on voiceprint recognition is a kind of device that uses voiceprint recognition technology to monitor the running state of fan blade in real time and detect whether the blade has defects or abnormalities. It is usually composed of a voiceprint monitoring sensor, a data acquisition card, a data processor and a controller. It mainly senses the sound wave signal in the blade running process through the voiceprint monitoring sensor, and then transmits it for algorithm processing. When the received voiceprint characteristics deviate from the health model, it may mean that the blade has defects or abnormalities such as cracks, looseness, etc. At this time, the monitoring device will immediately issue an alarm to remind the staff to further check and repair. The voiceprint recognition monitoring device is usually installed inside the blade with its microphone facing the internal cavity of the fan blade. Such design helps to capture the vibration noise inside the blade, reduce external noise interference and enhance local sound signals, thereby improving the accuracy and reliability of blade state monitoring. In addition, a protective cover is usually installed outside the voiceprint recognition monitoring device to protect it from being affected and damaged.

[0003] In the patent with publication number CN119470670A, a kind of online monitoring method of offshore fan blade based on voiceprint recognition is mentioned, which belongs to the field of fan blade acoustic signal analysis. The invention obtains fan voiceprint data, weather data and fan power generation data, constructs a signal processing model, denoises, amplifies and extracts features of the collected voiceprint signal through a signal amplifier, a filter and a feature extraction unit, constructs a deep learning model, imports the voiceprint signal parameters, weather data and fan power generation into the deep learning model to evaluate future fan blade cracks, constructs a crack evaluation model, imports the crack sound source position, crack depth, crack length and estimated damage score into the crack evaluation model to evaluate the degree of fan blade cracks under future weather conditions, grades the fan cracks according to the crack damage score and alarms, and realizes the early warning of future fan blade cracks by combining the voiceprint signal, weather conditions and power generation of offshore fan blades.

[0004] The inventor found that there are at least the following problems in the prior art:

[0005] The existing fan blade defect monitoring device is installed inside the blade and has a protective cover installed outside to protect it. However, when the fan blade speed exceeds the rated speed, the strong centrifugal force will cause the monitoring device and its protective cover to loosen or be thrown off, making it impossible to monitor during the next use.

[0006] Therefore, the above technical problems need to be solved. The utility model discloses a content

[0007] In order to overcome the prior art's insufficient, the utility model provides a fan blade defect monitoring device based on voiceprint recognition, the device is through counterweight sliding block linkage drive oil cylinder, triggers hydraulic drive when the abnormal rotation, promotes the pressboard and enhances the equipment stability, prevents the loosening and falls off, and dustproof mechanism combines the elastic sheet and centrifugal force drives dustproof net self-cleaning, with the buffer gasket noise reduction, avoids dust blockage and signal interference, ensures the continuous and accurate monitoring.

[0008] In order to solve above-mentioned technical problem, the utility model provides basic technical scheme as follows:

[0009] A fan blade defect monitoring device based on voiceprint recognition, including voiceprint monitoring equipment, the outside of voiceprint monitoring equipment is provided with the protection mechanism, and the upper portion of protection mechanism is provided with dustproof mechanism, the protection mechanism includes the receiving frame and the side support plate installed in the four sides of receiving frame, and the protection mechanism further includes the rubber buffer frame installed below receiving frame, and the rubber buffer frame is attached to the upper portion of voiceprint monitoring equipment, and the inside of side support plate is provided with two transmission oil cylinders one, and the connecting end of transmission oil cylinder one is connected with transmission oil cylinder two through the link oil pipe, and transmission oil cylinder two is fixedly connected to one side of side support plate, and one side of side support plate is fixedly connected with the limiting column, and the periphery of limiting column is penetrated with counterweight sliding block, and the periphery of limiting column is surrounded with high elasticity piece, and high elasticity piece is located above counterweight sliding block, the dustproof mechanism includes the mounting frame plate and the elastic sheet, and the inside of mounting frame plate is provided with dustproof net, and the periphery of mounting frame plate is slidably connected to the inside of receiving frame.

[0010] Preferably, the periphery of the rubber buffer frame is provided with an outer groove, and the inner portion of the outer groove is slidably connected with a pressing plate, and the lower portion of the pressing plate is fixedly connected with a buffer pad two.

[0011] Preferably, the inside of the receiving frame is provided with an inner groove, and the inner groove is fixedly connected with a buffer pad one on the upper and lower inner walls.

[0012] Preferably, the lower end of the transmission oil cylinder one is inserted with a plug rod, the top end of the plug rod is fixedly connected with a piston one, the piston one is slidably connected in the inside of the transmission oil cylinder one, and the lower end of the plug rod is fixedly connected with the counterweight sliding block.

[0013] Preferably, the end of the transmission oil cylinder two away from the link oil pipe is inserted with a driving rod, the end of the driving rod in the transmission oil cylinder two is fixedly connected with a piston two, and the other end of the driving rod is fixedly connected with a push block.

[0014] Preferably, the push block is slidably connected in the inside of the side support plate, and is fitted above the pressing plate.

[0015] Preferably, the four edges of the mounting frame plate are provided with protruding plates, the upper part of the protruding plates is provided with elastic sheets, the protruding plates and the elastic sheets are located between the first buffer pads, and the protruding plates and the elastic sheets are located inside the inner grooves and between the first buffer pads.

[0016] The utility model discloses the beneficial effects are:

[0017] One, the utility model discloses a protection mechanism is set up, utilizes the linkage of counterweight sliding block and transmission oil cylinder, breaks through the limit of counterweight sliding block upper part and triggers transmission oil cylinder when fan blade speed is abnormal, and the additional down pressure of sound print monitoring equipment is pushed to pressing plate, and the stability of device under high speed centrifugal force is enhanced, avoids monitoring equipment loose or falling off, and the monitoring continuity is guaranteed.

[0018] Two, the dustproof mechanism of the utility model cooperates with the centrifugal force of fan blade rotation through elastic sheet, and the dust screen moves periodically up and down in the fan rotating process, realizes self-cleaning function, prevents dust from blocking and influences sound print monitoring effect, and simultaneously, the buffer pad in the inner groove absorbs dust screen vibration noise, avoids the interference to sound print signal. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall perspective of the embodiment one of the utility model;

[0020] Figure 2 It is the structure schematic drawing of the sound print monitoring equipment and protection mechanism of the embodiment one of the utility model;

[0021] Figure 3 It is the structure schematic drawing of the Figure 2 middle part of the embodiment one of the utility model;

[0022] Figure 4 It is the structure schematic drawing of the inside of transmission oil cylinder of the embodiment one of the utility model;

[0023] Figure 5 It is the structure schematic drawing of the inside of rubber buffer frame of the embodiment one of the utility model;

[0024] Figure 6 It is the structure schematic drawing of the inside of the bearing frame and dustproof mechanism of the embodiment one of the utility model.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, sound print monitoring equipment;2, base;

[0027] 3. Protective mechanism; 31. Receiving frame; 311. Inner groove; 312. Buffer pad one; 32. Rubber buffer frame; 321. Outer groove; 322. Pressure plate; 323. Buffer pad two; 33. Side support plate; 34. Limiting post; 35. Counterweight slider; 36. High elasticity component; 37. Transmission cylinder one; 371. Insert rod; 372. Piston one; 38. Transmission cylinder two; 381. Drive rod; 382. Piston two; 383. Push block; 39. Connecting oil pipe;

[0028] 4. Dustproof mechanism; 41. Dustproof net; 42. Mounting frame; 43. Spring clip; 44. Protruding plate;

[0029] 5. Fan blades. Detailed Implementation

[0030] Please refer to the following. Figures 1 to 6 As shown, the technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0031] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.

[0032] This utility model provides a wind turbine blade defect monitoring device based on voiceprint recognition, including a voiceprint monitoring device 1, a protective mechanism 3 is provided on the outside of the voiceprint monitoring device 1, and a dustproof mechanism 4 is provided above the protective mechanism 3.

[0033] The protective mechanism 3 includes a receiving frame and side support plates 33 installed on the four sides of the receiving frame. The protective mechanism 3 also includes a rubber buffer frame 32 installed below the receiving frame. The rubber buffer frame 32 fits above the soundprint monitoring device 1. Two transmission cylinders 37 are installed inside the side support plate 33. The connecting end of the transmission cylinder 37 is connected to the transmission cylinder 38 through the connecting oil pipe 39. The transmission cylinder 38 is fixedly connected to one side of the side support plate 33. A limit post 34 is fixedly connected to one side of the side support plate 33. A counterweight slider 35 passes through the periphery of the limit post 34. A high elasticity element 36 surrounds the periphery of the limit post 34. The high elasticity element 36 is located above the counterweight slider 35.

[0034] The dustproof mechanism 4 comprises a mounting frame plate 42 and an elastic sheet 43, the inner side of the mounting frame plate 42 is provided with a dust screen 41, and the outer periphery of the mounting frame plate 42 is slidingly connected to the inner side of the receiving frame guide;

[0035] The voiceprint monitoring device 1 is installed above the base 2 by the protection mechanism 3, is located inside the fan blade 5, the base 2 and the fan blade 5 are the fan blades of the wind turbine in the prior art, the bottom of the voiceprint monitoring device 1 penetrates the base 2, and is connected to external data acquisition cards, data processors, controllers and the like through a line; the upper side of the voiceprint monitoring device 1 has a porous structure for facilitating the microphone inside to receive the sound inside the fan blade 5, which is not described in detail in the prior art;

[0036] The side support plate 33 is provided with a connecting plate at the upper and lower ends of the limiting column 34, the counterweight sliding block 35 is located between the connecting plates and is penetrated by the limiting column 34; the counterweight sliding block 35 is slidingly connected to the inside of the side support plate 33 and can push the plug rod 371; the counterweight sliding block 35 has a certain weight, and the weight of the counterweight sliding block 35 and the high-elasticity piece 36 with stronger elasticity can be adjusted according to actual conditions, so as to apply additional downward pressure to the voiceprint monitoring device 1 when the fan is abnormally rotated under the influence of wind.

[0037] In a further embodiment, the outer periphery of the rubber buffer frame 32 is provided with an outer groove 321, and the inner side of the outer groove 321 is slidingly connected with a pressing plate 322, and the lower side of the pressing plate 322 is fixedly connected with a buffer gasket two 323.

[0038] In this embodiment, the rubber buffer frame 32 is made of rubber material except the pressing plate 322, and can cooperate with the receiving frame guide to protect the voiceprint monitoring device 1 in a normal state.

[0039] In a further embodiment, the inner side of the receiving frame guide is provided with an inner groove guide 1, and the upper and lower walls of the inner groove guide 1 are fixedly connected with a buffer gasket one guide 2.

[0040] In this embodiment, the buffer gasket one guide 2 is a rubber pad, so as to absorb the noise generated when the lug plate 44 slides up and down, and avoid interfering with the voiceprint monitoring device 1.

[0041] In a further embodiment, the lower end of the transmission oil cylinder one 37 is inserted with the plug rod 371, the top end of the plug rod 371 is fixedly connected with the piston one 372, the piston one 372 is slidingly connected to the inside of the transmission oil cylinder one 37, and the lower end of the plug rod 371 is fixedly connected with the counterweight sliding block 35.

[0042] In the embodiment, the upper end of the transmission oil cylinder one 37 and the end of the transmission oil cylinder two 38 away from the side support plate 33 are provided with connecting ports, so as to be connected through the connecting oil pipe 39, and the connecting oil pipe 39 also penetrates the side support plate 33; the inside of the transmission oil cylinder one 37 and the transmission oil cylinder two 38 is provided with hydraulic oil.

[0043] In a further embodiment, the end of the transmission oil cylinder two 38 away from the connecting oil pipe 39 is inserted with a driving rod 381, one end of the driving rod 381 inside the transmission oil cylinder two 38 is fixedly connected with a piston two 382, and the other end of the driving rod 381 is fixedly connected with a push block 383.

[0044] In the embodiment, the insertion interfaces of the insertion rod 371 inserted into the transmission oil cylinder one 37 and the driving rod 381 inserted into the transmission oil cylinder two 38 are all larger than the diameters of the insertion rod 371 and the driving rod 381, so as to ensure the flow of the hydraulic oil between the transmission oil cylinder one 37 and the transmission oil cylinder two 38.

[0045] In a further embodiment, the push block 383 is slidingly connected inside the side support plate 33 and fits above the pressing plate 322.

[0046] In the embodiment, the side support plate 33 is provided with a groove for the sliding of the push block 383 near the rubber buffer frame 32, and the groove is aligned with the outer groove 321, so that the push block 383 can be inserted into the outer groove 321 and push the pressing plate 322F to move.

[0047] In a further embodiment, the four edges of the mounting frame plate 42 are provided with convex plates 44, the upper sides of the convex plates 44 are provided with elastic sheets 43, and the convex plates 44 and the elastic sheets 43 are located between the buffer gaskets one 2, and the convex plates 44 and the elastic sheets 43 are located inside the inner groove 1 and between the buffer gaskets one 2.

[0048] In the embodiment, the dustproof net 41 is a prior art for dustproof above the voiceprint monitoring device 1; the outer periphery of the mounting frame plate 42 is also provided with rubber rings at the abutting positions with the inner side of the receiving frame, for further avoiding the generation of noise.

[0049] The working principle of the utility model is as follows:

[0050] When the fan blade 5 is subjected to wind force to cause abnormal rotation speed, the abnormal rotation speed makes the counterweight slider 35 move away from the base 2 by centrifugal force, thereby making the insertion rod 371 and the piston one 372 move upward, thereby delivering the hydraulic oil in the transmission oil cylinder one 37 to the inside of the transmission oil cylinder two 38 through the connecting oil pipe 39, and pushing the piston two 382, the driving rod 381 and the push block 383 to move, so that the push block 383 is inserted into the inside of the outer groove 321, and the pressing plate 322 and the buffer gasket two 323 move downward, so that the rubber buffer frame 32 presses the voiceprint monitoring equipment 1 below, thereby ensuring that the voiceprint monitoring equipment 1 will not be thrown out when the fan blade 5 has abnormal rotation speed, and is more secure.

[0051] When the fan blade 5 is normally subjected to wind force to rotate around the shaft of the fan, and the fan blade 5 rotates to the lower side of the fan shaft, the dust screen 41 and the mounting frame plate 42 will be subjected to centrifugal force and move upward, and with the continuous rotation, when the fan blade 5 rotates to the upper side of the fan shaft, the elastic force of the elastic sheet 43 will make the dust screen 41 and the mounting frame plate 42 move downward, and continuously reciprocate, thereby cleaning the dust above the dust screen 41, and when the dust screen 41 and the mounting frame plate 42 move up and down to generate vibration to clean themselves, the buffer gasket one 2 can absorb the noise generated by the vibration, thereby avoiding interference with the normal sensing monitoring of the voiceprint monitoring equipment 1.

[0052] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A device for monitoring defects in a fan blade based on voiceprint recognition, comprising a voiceprint monitoring device (1), characterized in that, The voiceprint monitoring device (1) is externally provided with a protection mechanism (3), and the upper portion of the protection mechanism (3) is provided with a dustproof mechanism (4); The protection mechanism (3) comprises a receiving frame (31) and side support plates (33) installed on four sides of the receiving frame (31), and further comprises a rubber buffer frame (32) installed below the receiving frame (31), the rubber buffer frame (32) is attached to the upper portion of the voiceprint monitoring device (1), two transmission oil cylinders (37) are installed in the inside of the side support plates (33), the connecting end of the transmission oil cylinder (37) is connected with a transmission oil cylinder (38) through a connecting oil pipe (39), the transmission oil cylinder (38) is fixedly connected to one side of the side support plate (33), a limiting column (34) is fixedly connected to one side of the side support plate (33), a counterweight sliding block (35) penetrates through the outside of the limiting column (34), a high elasticity piece (36) is arranged around the limiting column (34) and located above the counterweight sliding block (35). The dustproof mechanism (4) comprises a mounting frame plate (42) and an elastic sheet (43), a dust screen (41) is installed on the inner side of the mounting frame plate (42), and the outer periphery of the mounting frame plate (42) is slidingly connected to the inner side of the receiving frame (31).

2. The device for monitoring defects of fan blades based on voiceprint recognition according to claim 1, characterized in that: The outer periphery of the rubber buffer frame (32) is provided with outer grooves (321) on four sides, and a pressing plate (322) is slidingly connected inside the outer grooves (321).

3. The device for monitoring defects of fan blades based on voiceprint recognition according to claim 1, characterized in that: The inner side of the receiving frame (31) is provided with inner grooves (311) on four sides, and a buffer gasket (312) is fixedly connected to the inner wall of the inner grooves (311).

4. The device for monitoring defects of fan blades based on voiceprint recognition according to claim 1, characterized in that: The lower end of the transmission oil cylinder (37) is inserted with an insertion rod (371), the top end of the insertion rod (371) is fixedly connected with a piston (372), the piston (372) is slidingly connected inside the transmission oil cylinder (37), and the lower end of the insertion rod (371) is fixedly connected with the counterweight sliding block (35).

5. The device for monitoring defects of fan blade based on voiceprint recognition according to claim 1, characterized in that: The end of the transmission oil cylinder (38) away from the connecting oil pipe (39) is inserted with a driving rod (381), one end of the driving rod (381) inside the transmission oil cylinder (38) is fixedly connected with a piston (382), and the other end of the driving rod (381) is fixedly connected with a push block (383).

6. The device for monitoring defects of fan blade based on voiceprint recognition according to claim 5, characterized in that: The push block (383) is slidingly connected inside the side support plate (33) and above the pressing plate (322).

7. The device for monitoring defects of fan blade based on voiceprint recognition according to claim 1, characterized in that: The mounting frame plate (42) is provided with a convex plate (44) on the outer periphery of four sides, the elastic sheet (43) is arranged above the convex plate (44), the convex plate (44) and the elastic sheet (43) are located between the buffer gasket (312), and the convex plate (44) and the elastic sheet (43) are located inside the inner grooves (311) and between the buffer gasket (312).

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