Remote monitoring and fault early warning system of wind power blade

Abstract

The invention relates to the technical field of wind power generation, in particular to a wind power blade remote monitoring and fault early warning system which comprises a cabin and a blade assembly installed in front of the cabin. A detection bin is further rotationally connected to the rear portion of the cabin, and a driving part for driving the detection bin is fixedly installed in the cabin. Wherein a channel is formed in the lower side of the detection bin, a bottom cover is movably connected to the interior of the channel through a lifting assembly, and a visual module is fixedly installed above the bottom cover. The adopted visual module is used for conducting monitoring and fault early warning on the blades, in the extreme environment, if power generation of the whole unit is abnormal, the visual module can be used for monitoring the blades, and the visual module can be used for monitoring the blades. The blades can be detected through the visual module, whether the surfaces of the blades are damaged or frozen or not is judged, so that normal operation of the wind driven generator is affected, meanwhile, due to the fact that the detection bin can rotate in the circumferential direction, the states of the blades can be monitored through circumferential rotation of the visual module, and the monitoring comprehensiveness is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a remote monitoring and fault warning system for wind turbine blades. Background Art

[0002] During the actual operation of wind turbines, the blades may be affected by various external factors, such as strong winds, heavy rains, hail, lightning strikes, etc., causing damage, cracks, icing and other problems on the blade surface. These problems will not only reduce the power generation efficiency of the wind turbine, but may also cause safety accidents and pose a serious threat to personnel and equipment.

[0003] At present, the inspection of wind turbine blades mainly relies on manual observation and drone photography. Manual observation usually requires the use of tools such as telescopes, which is not only inefficient, but also limited by factors such as weather and observation angle, making it difficult to fully and accurately grasp the operating status of the blades. Although drone photography can provide more intuitive image information, it is costly and difficult to implement under remote conditions.

[0004] Therefore, how to achieve remote monitoring and fault warning of wind turbine blades and improve the operating efficiency and safety of wind turbines has become a technical problem that needs to be solved urgently in the field of wind power generation. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art such as inconvenience in remote monitoring and fault warning of blades, and to propose a remote monitoring and fault warning system for wind turbine blades.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Design a remote monitoring and fault warning system for wind turbine blades, including:

[0008] a nacelle and a blade assembly mounted in front of the nacelle;

[0009] A detection chamber is also rotatably connected to the rear of the cabin, and a driving member for driving the detection chamber is fixedly installed in the cabin;

[0010] A channel is provided on the lower side of the detection chamber, a bottom cover is movably connected to the channel via a lifting assembly, and a visual module is fixedly installed above the bottom cover.

[0011] Furthermore, the lifting assembly includes a fixing seat fixed in the detection chamber, and an electric push rod is pinned to the bottom of the fixing seat;

[0012] The shaft end of the electric push rod is pinned with a connecting seat, and the connecting seat is fixed on the bottom cover.

[0013] Furthermore, diagonal rods are fixedly installed on both sides of the fixing seat;

[0014] A locking assembly is provided at the end of the oblique tie rod, and a telescopic assembly is provided between the oblique tie rod and the bottom cover.

[0015] Furthermore, the telescopic assembly includes four sleeves fixedly mounted on the upper side of the bottom cover, wherein rods are movably inserted into the interior of the sleeves, and a hollow shaft is commonly connected between the ends of the two rods on the same side.

[0016] Furthermore, a cavity is opened inside the insertion rod, and a locking rod is movably connected in the cavity. One end of the locking rod passes through the top of the insertion rod and extends to the inside of the hollow shaft, and the other end of the locking rod passes through and extends to the outside of the bottom of the insertion rod.

[0017] Furthermore, a compression spring is fixedly connected between the locking rod and the cavity, a plurality of positioning grooves are provided at intervals on the inner side of the sleeve, and the bottom of the locking rod is engaged with the positioning grooves.

[0018] Furthermore, the interior of the hollow shaft is rotatably connected to a shaft rod via a torsion spring, a gear is fixedly mounted on the outside of the shaft rod, and a cam portion is also formed on the outside of the shaft rod, and the cam portion conflicts with the end of the locking rod.

[0019] Furthermore, the locking assembly includes a connecting frame fixed to the bottom of the inclined rod, a mounting frame fixedly installed on the side of the connecting frame, a pushing member fixedly installed on the mounting frame, and a stop plate fixedly installed on the shaft end of the pushing member inserted into the connecting frame, and the hollow shaft stop is between the stop plate and the connecting frame.

[0020] Furthermore, the bottom of the connecting frame has an arc-shaped groove adapted to the hollow shaft and a limiting groove adapted to the insertion rod, and the limiting groove and the arc-shaped groove are connected.

[0021] Furthermore, a rack portion is provided in the middle of the upper surface of the stop plate, and the rack portion is meshed with the gear.

[0022] The remote monitoring and fault warning system for wind turbine blades proposed in the present invention has the following beneficial effects: the visual module adopted in the present invention is used to monitor the blades and issue fault warnings. In extreme environments, if the power generation of the entire unit is abnormal, the blades can be inspected by the visual module to determine whether the blade surface is damaged or frozen, thereby affecting the normal operation of the wind turbine. At the same time, since the detection chamber can rotate circumferentially, the visual module can be rotated circumferentially to monitor the status of each blade, thereby improving the comprehensiveness of the monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 A three-dimensional diagram of the detection chamber of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the detection chamber of the present invention after removing part of the outer shell;

[0026] Figure 4 It is a schematic structural diagram of the lifting assembly of the present invention;

[0027] Figure 5 This is a schematic diagram of the telescopic assembly structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the shaft structure of the present invention;

[0029] Figure 7 This is a front view of the bottom cover of the present invention when it is tilted and adjusted;

[0030] Figure 8 This is a three-dimensional diagram of the bottom cover of the present invention when tilting and adjusting;

[0031] Figure 9 for Figure 8 Schematic diagram of the enlarged structure of area A.

[0032] In the figure: 1. Cabin; 2. Blade assembly; 3. Inspection chamber; 4. Driving part; 5. Lifting assembly; 51. Fixed seat; 52. Electric push rod; 53. Connecting seat; 54. Diagonal rod; 55. Locking assembly; 551. Connecting frame; 552. Mounting frame; 553. Pushing member; 554. Stop plate; 555. Arc groove; 556. Limiting groove; 557. Rack part; 56. Telescopic assembly; 561. Sleeve; 562. Insert rod; 563. Hollow shaft; 564. Locking rod; 565. Compression spring; 566. Positioning groove; 57. Torsion spring; 58. Shaft; 581. Gear; 582. Cam part; 6. Bottom cover; 7. Visual module. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1-9This is an embodiment of the present invention, which discloses a remote monitoring and fault warning system for wind turbine blades. Specifically, the system includes a nacelle 1 and a blade assembly 2 installed in front of the nacelle 1. Of course, the blade assembly 2 includes a hub and blades installed outside the hub. The nacelle 1 is equipped with a power generation component. The specific structure and principle of the system are conventional means in the prior art and will not be elaborated here.

[0035] A detection chamber 3 is also rotatably connected to the rear of the nacelle 1. A driving member 4 for driving the detection chamber 3 is fixedly installed in the nacelle 1. In this embodiment, the driving member 4 is preferably configured as a motor, which drives the entire detection chamber 3 to rotate circumferentially. In this way, when the visual module 7 protrudes from the detection chamber 3, it can achieve circumferential rotation to monitor the status of each blade, thereby improving the comprehensiveness of monitoring.

[0036] Reference Figure 3 , wherein a channel is provided on the lower side of the detection chamber 3, in which a bottom cover 6 is movably connected via a lifting assembly 5, and a visual module 7 is fixedly installed above the bottom cover 6, that is, the visual module 7 provided in the present invention is used to monitor the blades and provide fault warnings. In extreme environments, if the entire unit generates power abnormally, the blades can be inspected by the visual module 7 to determine whether the blade surface is damaged or frozen, thereby affecting the normal operation of the wind turbine. Of course, the visual module 7 described in this embodiment can be set as a camera with a pan-tilt head, which is connected to a cloud server via a wireless module so as to be used for remote monitoring of the working status of the blades.

[0037] Reference Figure 4 In some embodiments, the lifting assembly 5 of the present invention includes a fixing seat 51 fixed in the detection chamber 3, and an electric push rod 52 is pinned to the bottom of the fixing seat 51;

[0038] The shaft end pin of the electric push rod 52 is connected to a connecting seat 53, and the connecting seat 53 is fixed on the bottom cover 6. That is, in this embodiment, the bottom cover 6 is driven to move up and down by the electric push rod 52. When monitoring and warning the blades, the bottom cover 6 can be controlled to move downward by the electric push rod 52. At this time, the visual module 7 follows the bottom cover 6 to move downward to realize monitoring of the blades. Conversely, after the monitoring is completed, the bottom cover 6 can be reset upward to allow the entire visual module 7 to be stored in the detection chamber 3, thereby realizing the protection operation of the visual module 7.

[0039] Reference Figure 4 Furthermore, in this embodiment, inclined rods 54 are fixedly installed on both sides of the fixing seat 51, and the two inclined rods 54 are distributed in an eight-shaped shape;

[0040] A locking assembly 55 is provided at the end of the inclined rod 54 , and a telescopic assembly 56 is provided between the inclined rod 54 and the bottom cover 6 .

[0041] Reference Figure 5 On the basis of the above embodiment, the telescopic assembly 56 in this embodiment includes four sleeves 561 fixedly mounted on the upper side of the bottom cover 6, and an insertion rod 562 is movably inserted inside the sleeve 561. The ends of the two insertion rods 562 on the same side are commonly connected to a hollow shaft 563. Specifically, the insertion rod 562 in this embodiment is an L-shaped structure.

[0042] Furthermore, a cavity is provided inside the insertion rod 562 of the present invention, and a locking rod 564 is movably connected in the cavity. One end of the locking rod 564 passes through the top end of the insertion rod 562 and extends to the inside of the hollow shaft 563, and the other end of the locking rod 564 passes through and extends to the outside of the bottom of the insertion rod 562. Preferably, the locking rod 564 described in the present invention is configured as a Z-shaped rod.

[0043] In addition, a compression spring 565 is fixedly connected between the locking rod 564 and the cavity in the present invention, and a plurality of positioning grooves 566 are spaced apart on the inner side of the sleeve 561 , and the bottom of the locking rod 564 is engaged with the positioning grooves 566 .

[0044] That is to say, in the initial state, the bottom of the locking rod 564 is separated from the positioning groove 566 inside the sleeve 561. Therefore, in this state, the insertion rod 562 and the sleeve 561 can freely telescope and move. Therefore, at this time, under the push of the electric push rod 52, the tops of the two insertion rods 562 on both sides are limited by the locking assembly 55 and cannot be displaced and rotated. That is, when the axial end of the electric push rod 52 is extended, the entire bottom cover 6 produces an up and down horizontal movement effect. At this time, the bottom cover 6 can be moved downward to allow the visual module 7 to protrude from the outside of the entire detection chamber 3, thereby realizing the monitoring and early warning of the blade status.

[0045] It should be noted that, in this embodiment, the interior of the hollow shaft 563 is rotatably connected to a shaft rod 58 via a torsion spring 57, and a gear 581 is fixedly installed on the outside of the shaft rod 58. Of course, in the present invention, there should be a break in the middle of the hollow shaft 563, and the gear 581 is rotatably connected to the break, and a cam portion 582 is also formed on the outside of the shaft rod 58, and the cam portion 582 conflicts with the end of the locking rod 564.

[0046] That is, in this embodiment, in the initial state, the cam portion 582 does not interfere with the end of the locking rod 564. At this time, the locking rod 564 remains in a free state, so the insertion rod 562 and the sleeve 561 can be relatively freely connected to achieve height adjustment control of the bottom cover 6.

[0047] Reference Figure 5 、 Figure 6 On the basis of the above embodiment, the locking assembly 55 in the present invention includes a connecting frame 551 fixed to the bottom of the inclined rod 54, and a mounting frame 552 is fixedly installed on the side of the connecting frame 551. A pushing member 553 is fixedly installed on the mounting frame 552. The pushing member 553 described in the present invention is preferably configured as a hydraulic cylinder, and the shaft end of the pushing member 553 is fixedly installed with a stop plate 554 inserted into the connecting frame 551, and the hollow shaft 563 is stopped between the stop plate 554 and the connecting frame 551.

[0048] Of course, in order to achieve the limiting locking of the hollow shaft 563, the present invention has an arc groove 555 adapted to the hollow shaft 563 and a limiting groove 556 adapted to the insertion rod 562 at the bottom of the connecting frame 551, and the limiting groove 556 and the arc groove 555 are connected.

[0049] It should be noted that, in the present invention, a rack portion 557 is provided in the middle of the upper surface of the stop plate 554 , and the rack portion 557 is engaged with the gear 581 .

[0050] During operation, in the initial state, the shaft end of the pusher 553 is fully extended, and the stop plate 554 is completely stopped below the hollow shaft 563. During this process, the rack portion 557 on the stop plate 554 also drives the gear 581 to rotate. When the gear 581 rotates, it drives the shaft 58 to rotate until the cam portion 582 on the shaft 58 abuts against the locking rod 564 to move it. When the locking rod 564 moves backward, it separates from the positioning groove 566 on the inner wall of the sleeve 561. Therefore, the sleeve 561 and the insertion rod 562 are in a freely movable telescopic state.

[0051] At this time, since the entire bottom cover 6 can be driven by the electric push rod 52 to move up and down, with the help of the plug-in cooperation of the sleeve 561 and the plug rod 562 on both sides, the visual module 7 can be controlled to protrude out of the outside of the inspection chamber 3 to realize the inspection of the blade.

[0052] Reference Figure 7 、 Figure 8 、 Figure 9 Of course, during the detection process, the inclination of the entire bottom cover 6 can be adjusted. By adjusting the inclination of the bottom cover 6, the detection range of the visual module 7 can be improved, thereby optimizing the monitoring accuracy of the visual module 7.

[0053] During the specific adjustment, the stop plate 554 can be pulled completely backward by the push member 553 to separate the stop plate 554 from the bottom of the hollow shaft 563. During this process, as the stop plate 554 moves backward, the rack portion 557 on its upper side drives the gear 581 to reset and rotate, thereby causing the locking rod 564 to move backward. At this time, the locking rod 564 will move and be engaged with the limiting groove 556 on the inner wall of the sleeve 561, so that the current positions of the sleeve 561 and the insertion rod 562 remain relatively locked and fixed, so as to facilitate subsequent reset and positioning.

[0054] In addition, the pushing member 553 on the other side will pull the stop plate 554 to move backward a distance, but not completely backward. The distance is limited by the rack portion 557, that is, when the rack portion 557 and the current gear 581 are separated, the stop plate 554 will no longer move. At this time, the position of the current hollow shaft 563 is still limited. It can be seen from the above description that at this time, since the hollow shaft 563 on one side has completely lost its stop, the hollow shaft 563 on the other side can rotate. At the same time, the sleeves 561 and the plug 562 on both sides remain in a rotatable state. Therefore, when the electric push rod 52 is extended again at this time, since the two ends of the electric push rod 52 are pin-connected, it will drive the entire bottom cover 6 to rotate with the rotatable hollow shaft 563 as the rotation point, thereby realizing the inclination adjustment of the bottom cover 6 and the visual module 7.

[0055] On the contrary, the electric push rod 52 is reset, which can drive the hollow shaft 563 on one side to reset to the bottom of the connecting frame 551. At this time, the locking components 55 on both sides can be reset again, and the hollow shafts 563 on both sides can be limited and stopped again, while keeping the sleeves 561 and the insertion rods 562 on both sides in a freely retractable state to facilitate the subsequent upward storage movement of the bottom cover 6.

[0056] In summary, the visual module 7 adopted in the present invention is used to monitor the blades and provide fault warnings. In extreme environments, if the power generation of the entire unit is abnormal, the blades can be inspected through the visual module 7 to determine whether the blade surface is damaged or frozen, thereby affecting the normal operation of the wind turbine. At the same time, since the detection chamber 3 can rotate circumferentially, the visual module 7 can be rotated circumferentially to monitor the status of each blade, thereby improving the comprehensiveness of the monitoring.

[0057] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. The remote monitoring and fault warning system for wind turbine blades is characterized by: include: A nacelle (1) and a blade assembly (2) mounted in front of the nacelle (1); A detection chamber (3) is also rotatably connected to the rear of the cabin (1), and a driving member (4) for driving the detection chamber (3) is fixedly installed in the cabin (1); A channel is provided on the lower side of the detection chamber (3), a bottom cover (6) is movably connected to the channel via a lifting assembly (5), and a visual module (7) is fixedly installed above the bottom cover (6).

2. The remote monitoring and fault warning system for wind turbine blades according to claim 1 is characterized in that: The lifting assembly (5) comprises a fixing seat (51) fixed in the detection chamber (3), and an electric push rod (52) is pinned to the bottom of the fixing seat (51); The shaft end of the electric push rod (52) is pin-connected with a connecting seat (53), and the connecting seat (53) is fixed on the bottom cover (6).

3. The remote monitoring and fault warning system for wind turbine blades according to claim 2, characterized in that: Diagonal pull rods (54) are also fixedly mounted on both sides of the fixing seat (51); A locking assembly (55) is provided at the end of the inclined tie rod (54), and a telescopic assembly (56) is provided between the inclined tie rod (54) and the bottom cover (6).

4. The remote monitoring and fault warning system for wind turbine blades according to claim 3 is characterized in that: The telescopic assembly (56) comprises four sleeves (561) fixedly mounted on the upper side of the bottom cover (6), wherein an insertion rod (562) is movably inserted into the interior of the sleeve (561), and a hollow shaft (563) is commonly connected between the ends of the two insertion rods (562) on the same side.

5. The remote monitoring and fault warning system for wind turbine blades according to claim 4 is characterized in that: A cavity is provided inside the insertion rod (562), and a locking rod (564) is movably connected in the cavity. One end of the locking rod (564) passes through the top end of the insertion rod (562) and extends to the inside of the hollow shaft (563), and the other end of the locking rod (564) passes through and extends to the outside of the bottom of the insertion rod (562).

6. The remote monitoring and fault warning system for wind turbine blades according to claim 5, characterized in that: A compression spring (565) is fixedly connected between the locking rod (564) and the cavity, and a plurality of positioning grooves (566) are spaced apart on the inner side of the sleeve (561), and the bottom of the locking rod (564) is engaged with the positioning grooves (566).

7. The remote monitoring and fault warning system for wind turbine blades according to claim 5, characterized in that: The interior of the hollow shaft (563) is rotatably connected to a shaft rod (58) via a torsion spring (57), a gear (581) is fixedly mounted on the outside of the shaft rod (58), and a cam portion (582) is also formed on the outside of the shaft rod (58), and the cam portion (582) abuts against the end of the locking rod (564).

8. The remote monitoring and fault warning system for wind turbine blades according to claim 7, characterized in that: The locking assembly (55) includes a connecting frame (551) fixed to the bottom of the inclined rod (54), a mounting frame (552) fixedly installed on the side of the connecting frame (551), a pushing member (553) fixedly installed on the mounting frame (552), and a stop plate (554) plugged into the connecting frame (551) fixedly installed on the axial end of the pushing member (553), and the hollow shaft (563) is stopped between the stop plate (554) and the connecting frame (551).

9. The remote monitoring and fault warning system for wind turbine blades according to claim 8, characterized in that: The bottom of the connecting frame (551) has an arc-shaped groove (555) adapted to the hollow shaft (563) and a limiting groove (556) adapted to the inserting rod (562), and the limiting groove (556) and the arc-shaped groove (555) are connected.

10. The remote monitoring and fault warning system for wind turbine blades according to claim 8, characterized in that: A rack portion (557) is provided in the middle of the upper surface of the stop plate (554), and the rack portion (557) is meshed with the gear (581).

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