Wind turbine blade tip profiler

Abstract

The present application provides a blade tip marker device for a wind turbine, comprising an annular light-collecting receiving cover and an annular light source which are arranged relatively to each other. The annular light-collecting receiving cover and the annular light source are arranged on the outside of the rotating shaft of the blade fixing head. The annular light-collecting receiving cover is connected to the blade fixing head, and the annular light source is connected to the head of the wind turbine. A gap is provided between the annular light-collecting receiving cover and the annular light source. A connecting substrate is provided at the root of the wind turbine blade, and a light source centralizing irradiation device is provided on the connecting substrate. One end of the light source centralizing irradiation device guides light from the annular light-collecting receiving cover through an optical fiber, and the other end of the light source centralizing irradiation device emits a light source to the tip of the wind turbine blade. A plurality of transparent lamp beads are provided at the tip of the wind turbine blade, thereby solving the problem that the traditional marker lamp beads which are connected in a wired form are difficult to repair.

Description

Technical Field

[0001] The invention relates to the field of wind turbines, and in particular to a blade tip profile indicator device for a wind turbine. Background Art

[0002] Wind turbines are generally installed in high or flat, open areas. The wind turbines are the tallest objects in the surrounding area. Due to their high height and long blades, they may pose a safety risk to aircraft, especially at night or in bad weather conditions, when the visibility of the wind turbine blades is greatly reduced. Therefore, it is necessary to add warning lights to the wind turbines to alert aircraft.

[0003] The traditional warning method is to install a circle of warning lights on the top of the wind turbine tower, but the blades of large wind turbines are long, and when they turn to the top, they will be tens or even hundreds of meters higher than the tower. In addition, the warning lights installed on the tower will not play a warning role in the width direction of the blade's rotation profile. In recent years, some technologies have also tried to install light beads on the blade tip and connect the light beads with wires, but because the blade fixing head of the wind turbine rotates continuously for a long time, the electric slip ring of the power connection is easy to wear and often needs maintenance and replacement, which is very inconvenient.

[0004] In addition, this method requires wiring inside the blades. Since the wind force will cause the blades to bend and deform, the wires may be torn off. Even if there is enough wire, it is difficult to arrange wire clips inside the blades. As the blades rotate, the wires of dozens of meters are still easily broken by centrifugal force. If this happens, the blades must be removed for repair, which makes maintenance and repair extremely difficult. Summary of the invention

[0005] The invention provides a blade tip marker device for a wind turbine, which solves the problem that the maintenance and repair of conventional marker lamp beads connected in a wired form are difficult.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a wind turbine blade tip outline indicator device, comprising a relatively arranged annular light-focusing receiving cover and an annular light source, the annular light-focusing receiving cover and the annular light source are arranged on the outside of the rotating shaft of the blade fixing head, the annular light-focusing receiving cover is connected to the blade fixing head, the annular light source is connected to the wind turbine head, a gap is provided between the annular light-focusing receiving cover and the annular light source, a connecting substrate is provided at the root of the wind turbine blade, a light source concentration irradiation device is provided on the connecting substrate, one end of the light source concentration irradiation device guides light from the annular light-focusing receiving cover through optical fiber, and the other end of the light source concentration irradiation device emits light to the tip of the wind turbine blade, and a plurality of transparent lamp beads are provided at the tip of the wind turbine blade.

[0007] In a preferred embodiment, a reflective coating is provided on the inner wall of the fan blade near the tip.

[0008] In a preferred embodiment, one end of the annular light-collecting cover and the annular light source is open and the inner wall is provided with a reflective cone surface, and the other end of the annular light source and the annular light-collecting cover is respectively provided with a light source part and a plurality of single-core optical fibers arranged in an annular shape.

[0009] In a preferred embodiment, the light source concentrated irradiation device includes a multi-core fiber optic positioning block and multiple multi-core optical fibers. The multi-core fiber optic positioning block is provided with multiple fiber optic positioning holes, and the multiple fiber optic positioning holes are arranged in a single row or multiple rows. One end of each multi-core optical fiber is inserted into each fiber optic positioning hole, and the other end of the multi-core optical fiber is provided with a fiber optic connector. The fiber optic connector includes a transition connection sleeve, and the transition connection sleeve is provided with multiple through-going single-core optical fiber positioning holes. The multi-core optical fiber is provided with multiple parallelly arranged multi-core optical fiber cores, and the distribution of the multi-core optical fiber cores is the same as the distribution of the single-core optical fiber positioning holes. One end of each single-core optical fiber is inserted into the single-core optical fiber positioning hole to align with the end of the multi-core optical fiber core, and the other end of each single-core optical fiber is inserted into the annular focusing receiving cover.

[0010] In a preferred embodiment, the optical fiber connector also includes a sealing cap, the diameter of the sealing cap is larger than that of the transition sleeve, one end of the sealing cap is sleeved with the transition sleeve, and the other end of the sealing cap is provided with a plurality of through holes with a diameter larger than that of the single-core optical fiber, each single-core optical fiber passes through the through hole to be inserted into the single-core optical fiber positioning socket, a first sunken groove hole is provided at one end of the transition sleeve close to the sealing cap, a second sunken groove hole is provided at the bottom of the first sunken groove hole, each single-core optical fiber positioning socket is provided at the bottom of the second sunken groove hole, a second sunken hole portion is provided at the port of the single-core optical fiber positioning socket, and a glue injection hole is provided in the center of the sealing cap.

[0011] In a preferred solution, a sealing groove is provided on the outer wall of one end of the transition sleeve close to the sealing cap, and a sealing ring is provided in the sealing groove.

[0012] In a preferred solution, a sink groove is provided near one end of the optical fiber positioning hole, and a plurality of sink grooves are provided on the side wall of the sink groove along the circumferential direction.

[0013] In the preferred scheme, it also includes a basic block, which is provided with a guide groove, and an extension portion is provided at one end of the multi-core optical fiber positioning block, which is inserted into the guide groove, and the width of the guide groove is greater than the width of the extension portion so that the multi-core optical fiber positioning block can move laterally, and the extension portion is provided with a through slide groove, and a sliding block is provided in the through slide groove, and sleeve portions are provided at both ends of the sliding block, and an adjusting nut is sleeved on the sleeve portion to limit the lateral displacement of the sliding block in the through slide groove, and a threaded adjustment screw is provided in the sliding block, and both ends of the adjustment screw are rotatably sleeved with the inner wall of the guide groove, and one end of the adjustment screw passes through the basic block to extend out.

[0014] In the preferred solution, ear seats are provided at both ends of the multi-core optical fiber positioning block, and a threaded stop bolt is provided on the ear seat, one end of the stop bolt rests on the base block, a slope surface is provided on one side of the extension part, and a threaded tightening bolt is provided on the side wall at the guide groove port, and one end of the tightening bolt passes through the side wall of the guide groove to rest on the slope surface.

[0015] In the preferred solution, it also includes a base, on which a rotatable rotating seat is provided, and the rotating seat is provided with a rotatable pitching platform. The rotating axes of the rotating seat and the pitching platform are arranged vertically, and the pitching platform is connected to the base block.

[0016] The beneficial effects of the present invention are as follows: the lamp beads at the tip of the blade are lit by remote illumination, and no wire connection is required, which avoids damage to the line when the blade is running, and no maintenance of the wire is required; a relatively arranged annular cover-type light-emitting and light-receiving structure is adopted, and the light source can be transmitted without contact between the two. The blade will not be worn out like an electric slip ring after long-term use, and no additional maintenance is required; the reflective coating is sprayed on the inner cavity near the tip area, which is less difficult than arranging cables, and the gradually narrowing structure of the fan blade is utilized. When the area of ​​the reflective coating area is sufficient, it can ensure that the blade can be turned even if it is stressed. shape, the light source can eventually reach the lamp bead after reflection; the emitting device is inside the blade fixing head, there is no additional load on the blade, and it will not destroy the dynamic balance of the blade; the light source concentrated irradiation device gathers the optical fiber collected by the single-core optical fiber into the multi-core optical fiber, reducing the emitting surface area, making the optical fiber more aggregated, and the core parallelism of the multi-core optical fiber is better. The emitted light will not diverge rapidly with the distance, and irradiating to the blade tip can not only ensure a certain area, but also avoid the light spot being too dispersed and the lamp bead being insufficiently bright; the light source concentrated irradiation device adopts an angle and position adjustment mechanism, which can facilitate the light spot to be aligned with the tip of the blade during debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the arrangement of the light transmission structure.

[0019] Figure 2 Schematic diagram of the coating on the tip of a wind turbine blade.

[0020] Figure 3 This is a schematic diagram of the arc distribution of lamp beads.

[0021] Figure 4 This is the principle diagram of optical fiber focusing.

[0022] Figure 5 This is the layout diagram of the condenser.

[0023] Figure 6 It is a schematic diagram of the rear side of the light source concentrated irradiation device.

[0024] Figure 7 It is a schematic diagram of the front side of the light source concentrated irradiation device.

[0025] Figure 8 It is a side view of the light source concentrated irradiation device.

[0026] Fig. 9 This is a schematic diagram of the multi-core optical fiber positioning block.

[0027] Fig.10 This is a structural diagram of a multi-core optical fiber positioning block.

[0028] Fig.11 Schematic diagram of the light angle adjustment mechanism.

[0029] Fig.12 This is a schematic diagram of a fiber optic connector.

[0030] Fig.13 This is a schematic diagram of the first filling layer of the optical fiber connector.

[0031] Fig.14 This is a schematic diagram of the layered filling glue of the optical fiber connector.

[0032] In the figure: base 1; annular dovetail groove 101; limiting pressure ring 102; rotating seat 2; screw sleeve 201; plug rod 202; bolt rod 203; tapered block 204; pitching platform 3; half worm gear 301; arc groove 302; tapered groove 303; retaining ring 304; cavity part 305; basic block 4; guide groove 401; tightening bolt 402; multi-core optical fiber positioning block 5; optical fiber positioning hole 501; first countersunk hole part 502; countersunk groove 503; extension part 504; through slide groove 505; sliding block 506; adjusting screw 507; adjusting nut 508; sleeve part 509; slope surface 510; ear seat 511; stop bolt 512; multi-core optical fiber 6; positioning edge 601; multi-core optical fiber core 602; adjustment The whole shaft 7; the worm sleeve 701; the sleeve part 702; the top screw 703; the optical fiber connector 8; the transition sleeve 801; the single-core optical fiber positioning jack 802; the second countersunk hole part 803; the second sunken slot hole 804; the first sunken slot hole 805; the sealing cap 806; the through hole 807; the glue injection hole 808; the sealing groove 809; the sealing ring 810; the sealing cap mounting screw 811; the single-core optical fiber 9; the fan head 10; the blade fixing head 11; the fan blade 12; the reflective coating 1201; the annular focusing receiving cover 13; the reflective cone 1301; the annular light source 14; the light source part 1401; the connecting substrate 15; the lamp bead 16; the expanded diameter optical fiber bundle 17; the light source concentrated irradiation device 18; the end fixing frame 19. DETAILED DESCRIPTION

[0033] like Figure 1-14A wind turbine blade tip outline indicator device is provided, comprising an annular light-collecting receiving cover 13 and an annular light source 14 which are arranged relatively to each other. The annular light-collecting receiving cover 13 and the annular light source 14 are arranged on the outside of the rotating shaft of the blade fixing head 11, the annular light-collecting receiving cover 13 is connected to the blade fixing head 11, the annular light source 14 is connected to the fan head 10, a gap is provided between the annular light-collecting receiving cover 13 and the annular light source 14, a connecting substrate 15 is provided at the root of the fan blade 12, a light source concentration irradiation device 18 is provided on the connecting substrate 15, one end of the light source concentration irradiation device 18 guides light from the annular light-collecting receiving cover 13 through an optical fiber, and the other end of the light source concentration irradiation device 18 emits a light source to the tip of the fan blade 12, and a plurality of transparent lamp beads 16 are provided at the tip of the fan blade 12.

[0034] The light source unit 1401 may be a plurality of light emitting heads arranged in a ring shape, or may be a ring-shaped light tube.

[0035] The light source concentrated irradiation device 18 collects light and then emits a strip of light to illuminate the area where the lamp beads 16 are distributed, covering all the lamp beads 16 at the same time. The lamp beads 16 are made of transparent material and can receive light and emit light outward.

[0036] The central axis of the annular light-collecting cover 13 and the annular light source 14 coincides with the axis of the rotating shaft of the blade fixing head 11, so when the blade fixing head 11 rotates, the annular light-collecting cover 13 can always receive the light source from the annular light source 14. The annular light-collecting cover 13 and the annular light source 14 do not contact and will not be worn.

[0037] The blade fixing head 11 is provided with three pitch changing structures and bearings connected to the fan blades 12 along the circumferential direction. The fan blades 12 and the connecting substrate 15 are both installed on the bearings. Therefore, when the blades are pitch changed, the fan blades 12 and the connecting substrate 15 rotate synchronously. Since the optical fiber has a certain flexibility and the pitch changing angle is not large, it will not affect the light guiding.

[0038] The lamp beads 16 are only exposed at the tip of the leaf and will not affect the wind flow. Since multiple lamp beads 16 are connected in an arc shape, the luminous area is larger, the viewing angle is larger, and the arc light strip presented at night is more special and can be better distinguished from other point light sources.

[0039] In a preferred embodiment, a reflective coating 1201 is provided on the inner wall of the fan blade 12 near the tip.

[0040] The coverage area of ​​the reflective coating 1201 should be larger than the area where the lamp beads 16 are located.

[0041] The blades are bent by the wind, causing the blade tips to deviate from the original position. At this time, the light will shine on the reflective coating 1201 on the side wall. Since the blades of the fan themselves are gradually narrowing in shape, even after multiple reflections, the light loss is still very small. Most of the light enters the lamp bead 16 after multiple reflections.

[0042] In the preferred embodiment, one end of the annular light-focusing receiving cover 13 and the annular light source 14 is open and the inner wall is provided with a reflective cone 1301, and the other end of the annular light source 14 and the annular light-focusing receiving cover 13 is respectively provided with a light source part 1401 and a plurality of single-core optical fibers 9 arranged in a ring shape.

[0043] In a preferred embodiment, the light source concentrated irradiation device 18 includes a multi-core fiber optic positioning block 5 and multiple multi-core optical fibers 6. The multi-core fiber optic positioning block 5 is provided with multiple fiber optic positioning holes 501, and the multiple fiber optic positioning holes 501 are arranged in a single row or multiple rows. One end of each multi-core optical fiber 6 is inserted into each fiber optic positioning hole 501, and the other end of the multi-core optical fiber 6 is provided with a fiber optic connector 8, and the fiber optic connector 8 includes a transition connection sleeve 801, and the transition connection sleeve 801 is provided with multiple through single-core optical fiber positioning holes 802. A plurality of parallel multi-core optical fiber cores 602 are provided in the multi-core optical fiber 6, and the distribution of the multi-core optical fiber cores 602 is the same as the distribution of the single-core optical fiber positioning holes 802. One end of each single-core optical fiber 9 is inserted into the single-core optical fiber positioning hole 802 to align with the end of the multi-core optical fiber core 602, and the other end of each single-core optical fiber 9 is inserted into the bottom end of the trumpet structure of the annular focusing receiving cover 13 to receive the light source reflected and converged by the reflective cone surface 1301.

[0044] Before connection, the end of the multi-core optical fiber 6 is cut flat, and an annular positioning edge 601 is processed on the outer wall of the end, the side wall of the positioning edge 601 is coated with glue, and the transition connection sleeve 801 is provided with an inner ring groove for positioning. After the two are connected, the transition connection sleeve 801 is rotated in a short time to coaxially align each single-core optical fiber positioning hole 802 with each multi-core optical fiber core 602, and then wait for the glue to solidify, and the transition connection sleeve 801 is bonded to the multi-core optical fiber 6.

[0045] The single-core optical fiber 9 can be made of glass optical fiber or plastic optical fiber. The single-core optical fiber 9 selects a model with a large core ratio. In order to reduce light leakage, the diameter of the multi-core optical fiber core 602 needs to be equivalent to the outer diameter of the single-core optical fiber 9, that is, the diameter of the multi-core optical fiber core 602 is larger than the core diameter of the single-core optical fiber 9.

[0046] The connection end of the single-core optical fiber 9 and the multi-core optical fiber core 602 may be anti-reflection coated to reduce the light intensity loss at the connection.

[0047] Each single-core optical fiber 9 transmits incident light and concentrates it to the multi-core optical fiber 6 at the transition connecting sleeve 801. The multi-core optical fiber 6 can be made of glass optical fiber with good structural strength. Therefore, the parallelism of each multi-core optical fiber core 602 can be guaranteed. Each multi-core optical fiber 6 is arranged into a long rectangular area on the multi-core optical fiber positioning block 5, and emits a strip light source to the inner tip of the wind turbine blade. Since a reflective coating is applied to the inner part of the wind turbine blade near the tip in advance, the strip light source finally reaches the transparent lamp bead area at the tip of the blade directly or after multiple reflections, and lights up each lamp bead distributed along the tip edge line of the blade.

[0048] Since the positioning edges 601 in the multi-core optical fiber 6 are arranged in parallel, the irradiated light is approximately parallel light, and since the fan blades are relatively long, the light spot gradually diverges to a region slightly larger than the lamp bead. The light spot exceeding the lamp bead region is reflected multiple times by the reflective coating, and most of it eventually enters the lamp bead, which has a high utilization rate of the light source.

[0049] The coating area of ​​the reflective coating can be determined according to the maximum allowable bending degree of the fan blade, ensuring that the light spot emitted by the strip light source can be covered even at the maximum bending. Since no wired connection is used, the transmission cable is prevented from being torn off when the fan blade is twisted by force. At the same time, there is no need to maintain the cables inside the blade, which greatly reduces the difficulty of maintenance.

[0050] In a preferred embodiment, the optical fiber connector 8 also includes a sealing cap 806, the diameter of which is larger than that of the transition sleeve 801, one end of the sealing cap 806 is sleeved with the transition sleeve 801, and the other end of the sealing cap 806 is provided with a plurality of through holes 807 with a diameter larger than that of the single-core optical fiber 9, each single-core optical fiber 9 passes through the through hole 807 to be inserted into the single-core optical fiber positioning hole 802, and a first sinking groove hole 805 is provided at one end of the transition sleeve 801 close to the sealing cap 806, a second sinking groove hole 804 is provided at the bottom of the first sinking groove hole 805, each single-core optical fiber positioning hole 802 is provided at the bottom of the second sinking groove hole 804, a second sinking hole portion 803 is provided at the port of the single-core optical fiber positioning hole 802, and a glue injection hole 808 is provided in the center of the sealing cap 806.

[0051] Since the distribution of the multi-core optical fiber cores 602 is relatively concentrated, the subsequent connection positions of the single-core optical fibers 9 are relatively dispersed. In order to prevent the single-core optical fiber 9 from being broken due to excessive bending angle, a cap 806 is installed for transition. The distribution of the through holes 807 on the cap 806 is similar to the single-core optical fiber positioning jack 802, but the overall distribution circle diameter is increased to disperse the distribution of the single-core optical fiber 9, and the diameter of the through hole 807 is larger than the single-core optical fiber 9, so that the single-core optical fiber 9 can be tilted slightly to avoid concentrated bending angles when the single-core optical fiber 9 is connected.

[0052] The side wall of the sealing cap 806 is provided with a plurality of through holes along the circumferential direction, and the outer wall of the transition sleeve 801 is provided with threaded holes. The sealing cap mounting screws 811 pass through the side wall of the sealing cap 806 and are locked in the threaded holes to fix the sealing cap 806 and the transition sleeve 801.

[0053] There are two fixing methods for the single-core optical fiber 9. The first method is to pass the single-core optical fiber 9 through the through hole 807 in advance. After the single-core optical fiber 9 is inserted into the single-core optical fiber positioning hole 802 and aligned with the multi-core optical fiber core 602, ultraviolet glue is injected into the second sinking groove hole 804. The ultraviolet glue in the second sinking groove hole 804 gradually flows into the outer wall interlayer of each second sinking hole part 803 and the single-core optical fiber 9. Then, the ultraviolet lamp is turned on to irradiate the ultraviolet glue, and the glue quickly solidifies into a first filling layer to fix the single-core optical fiber 9; then, the sealing cap 806 is covered, and glue is injected from the glue injection hole 808. If the sealing cap 806 is made of transparent materials such as acrylic, ultraviolet glue can also be used. Since the diameter of the through hole 807 is slightly larger than the single-core optical fiber 9, exhaust can be performed to balance the air pressure. When the glue is full, wait or irradiate ultraviolet rays to make the glue solidify into the second filling layer; the layered glue injection method can reduce bubbles and speed up the glue solidification efficiency.

[0054] The second method is to pass the single-core optical fiber 9 through the through hole 807, insert it into the single-core optical fiber positioning hole 802, directly put the sealing cap 806 on the transition connection sleeve 801, and then inject glue into the inner cavity through the glue injection hole 808 until it is full; this method is relatively simple to operate.

[0055] An end fixing frame 19 is provided at the rear end of the annular focusing receiving cover 13, and the optical fiber connector 8 can be installed on the end fixing frame 19. Multiple single-core optical fibers 9 can be bound into an expanded diameter optical fiber bundle 17 by adhesive tape to avoid collision and damage with moving parts.

[0056] In a preferred solution, a sealing groove 809 is provided on the outer wall of one end of the transition sleeve 801 close to the sealing cap 806 , and a sealing ring 810 is provided in the sealing groove 809 .

[0057] The sealing ring 810 seals the joint between the transition sleeve 801 and the sealing cap 806 .

[0058] In a preferred solution, a recessed groove 503 is provided near one end of the optical fiber positioning hole 501 , and a plurality of recessed grooves 503 are provided on the side wall of the recessed groove 503 along the circumferential direction.

[0059] Place the multi-core optical fiber positioning block 5 horizontally with the bottom raised up. After the multi-core optical fiber 6 is inserted into the optical fiber positioning hole 501, the lower end is against the same table surface to ensure that the ends are flush. At this time, fill glue into each first countersunk hole portion 502. After the glue solidifies, a third filling layer is formed to bond the multi-core optical fiber 6 to the optical fiber positioning hole 501.

[0060] In the preferred scheme, it also includes a base block 4, a guide groove 401 is provided on the base block 4, an extension portion 504 is provided at one end of the multi-core optical fiber positioning block 5, and the extension portion 504 is inserted into the guide groove 401. The width of the guide groove 401 is greater than the width of the extension portion 504 so that the multi-core optical fiber positioning block 5 can move laterally. The extension portion 504 is provided with a through slide groove 505, and a sliding block 506 is provided in the through slide groove 505. Both ends of the sliding block 506 are provided with socket parts 509, and the socket parts 509 are sleeved with adjusting nuts 508 to limit the lateral displacement of the sliding block 506 in the through slide groove 505. A threaded adjustment screw 507 is provided in the sliding block 506, and both ends of the adjustment screw 507 are rotatably sleeved with the inner wall of the guide groove 401, and one end of the adjustment screw 507 passes through the base block 4 to extend out.

[0061] The extended end of the adjusting screw 507 is provided with a knob for facilitating manual adjustment. The adjusting screw 507 is rotated to make the multi-core optical fiber positioning block 5 move laterally along the guide groove 401 to adjust the lateral position of the strip light source.

[0062] In the preferred embodiment, ear seats 511 are provided at both ends of the multi-core optical fiber positioning block 5, and a threaded stop bolt 512 is provided on the ear seat 511, one end of the stop bolt 512 rests on the base block 4, a slope surface 510 is provided on one side of the extension portion 504, and a threaded tightening bolt 402 is provided on the side wall at the end of the guide groove 401, and one end of the tightening bolt 402 passes through the side wall of the guide groove 401 to rest on the slope surface 510.

[0063] The slope surface 510 is further back at one end near the end of the extension part 504 and thinner near the root of the extension part 504. Together with the stop bolt 512, the depth of the multi-core optical fiber positioning block 5 inserted into the guide groove 401 can be locked to adjust the position of the strip light source in another direction.

[0064] In the preferred solution, it also includes a base 1, on which a rotatable rotating base 2 is provided, and the rotating base 2 is provided with a rotatable pitching platform 3, the rotating axes of the rotating base 2 and the pitching platform 3 are arranged vertically, and the pitching platform 3 is connected to the base block 4.

[0065] A cavity 305 is provided inside the tilting platform 3, and the extension portion 504 is inserted deep into the cavity without causing interference.

[0066] The rotating seat 2 is provided with an arc groove 302, and conical grooves 303 are provided at both ends of the pitching platform 3. A buckle 304 is installed in the conical groove 303, and the whole is placed on the arc groove 302 of the rotating seat 2. The buckle 304 is connected to the rotating seat 2 by bolts, and the pitching platform 3 is then restricted from rotating on the rotating seat 2.

[0067] The pitching platform 3 is semicircular, and a half worm gear 301 is provided on the outer wall of the pitching platform 3 . A rotatable adjustment shaft 7 is provided on the rotating seat 2 . A worm sleeve 701 is sleeved on the adjustment shaft 7 . The worm sleeve 701 is meshed with the half worm gear 301 .

[0068] The rotating seat 2 is provided with an internal box structure for accommodating the worm sleeve 701 .

[0069] The rotating seat 2 is provided with a sleeve portion 702 , and a screw threaded top screw 703 is provided on the sleeve portion 702 . One end of the screw thread 703 abuts against the outer wall of the adjusting shaft 7 .

[0070] A handle is provided at one end of the adjustment shaft 7 to facilitate manual adjustment of the pitch angle of the pitch platform 3 .

[0071] The worm gear transmission mechanism has a certain reverse self-locking function, and the rotation of the adjustment shaft 7 can be locked by pressing the adjusting shaft 7 with the top screw 703 .

[0072] An annular dovetail groove 101 is provided on the base 1, and a conical block 204 is provided in the annular dovetail groove 101. A bolt rod 203 is provided at one end of the conical block 204, and a screw sleeve 201 is also provided. One end of the screw sleeve 201 abuts against the rotating seat 2, and the bolt rod 203 passes through the rotating seat 2 to be threadedly connected with the screw sleeve 201.

[0073] After the conical block 204 is installed into the annular dovetail groove 101 , the limiting pressure ring 102 is installed to block the outer side of the conical block 204 .

[0074] The insert rod 202 is inserted into the screw sleeve 201 to facilitate the rotation of the screw sleeve 201 to lock the rotation of the rotating seat 2.

[0075] The rotating seat 2 and the pitching platform 3 can cooperate to adjust the pitch angle and yaw angle of the strip light source to achieve universal direction adjustment of the light source. During debugging, the fan blades are in a natural state without torque, and the pitch angle and yaw angle can be adjusted first. When the strip light source roughly covers the lamp bead area, the lateral and depth directions of the multi-core optical fiber positioning block 5 can be adjusted to achieve fine-tuning of the position and adjust the lamp bead area to the center of the strip light spot.

[0076] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A wind turbine blade tip profile indicator device, characterized in that: The invention comprises an annular light-collecting receiving cover (13) and an annular light source (14) which are arranged opposite to each other. The annular light-collecting receiving cover (13) and the annular light source (14) are arranged outside the rotating shaft of the blade fixing head (11). The annular light-collecting receiving cover (13) is connected to the blade fixing head (11). The annular light source (14) is connected to the fan head (10). A gap is provided between the annular light-collecting receiving cover (13) and the annular light source (14). A connecting substrate (15) is provided at the root of the fan blade (12). A light source concentrated irradiation device (18) is provided on the connecting substrate (15). One end of the light source concentrated irradiation device (18) guides light from the annular light-collecting receiving cover (13) through an optical fiber. The other end of the light source concentrated irradiation device (18) emits light to the tip of the fan blade (12). The tip of the fan blade (12) is provided with a plurality of transparent lamp beads (16). The inner wall of the fan blade (12) close to the tip is provided with a reflective coating (1201); One end of the annular light-collecting receiving cover (13) and the annular light source (14) is open and the inner wall is provided with a reflective cone surface (1301); the other ends of the annular light source (14) and the annular light-collecting receiving cover (13) are respectively provided with a light source portion (1401) and a plurality of single-core optical fibers (9) arranged in an annular shape; The light source concentrated irradiation device (18) comprises a multi-core optical fiber positioning block (5) and a plurality of multi-core optical fibers (6). The multi-core optical fiber positioning block (5) is provided with a plurality of optical fiber positioning holes (501), and the plurality of optical fiber positioning holes (501) are arranged in a single row or multiple rows. One end of each multi-core optical fiber (6) is inserted into each optical fiber positioning hole (501), and the other end of the multi-core optical fiber (6) is provided with an optical fiber connector (8), and the optical fiber connector (8) comprises a transition connection sleeve (801), and the transition connection sleeve (801) is provided with a plurality of through-going single-core optical fiber positioning holes (802). The multi-core optical fiber (6) is provided with a plurality of multi-core optical fiber cores (602) arranged in parallel, and the distribution of the multi-core optical fiber cores (602) is the same as that of the single-core optical fiber positioning holes (802). One end of each single-core optical fiber (9) is inserted into the single-core optical fiber positioning hole (802) to be aligned with the end of the multi-core optical fiber core (602), and the other end of each single-core optical fiber (9) is inserted into the annular focusing receiving cover (13).

2. The wind turbine blade tip profile indicator device according to claim 1, characterized in that: The optical fiber connector (8) further comprises a sealing cap (806), wherein the sealing cap (806) has a diameter greater than that of the transition connection sleeve (801), one end of the sealing cap (806) is sleeved with the transition connection sleeve (801), the other end of the sealing cap (806) is provided with a plurality of through holes (807) having a diameter greater than that of the single-core optical fiber (9), each single-core optical fiber (9) passes through the through holes (807) to be inserted into the single-core optical fiber positioning socket (802), one end of the transition connection sleeve (801) close to the sealing cap (806) is provided with a first sinking slot (805), the bottom end of the first sinking slot (805) is provided with a second sinking slot (804), each single-core optical fiber positioning socket (802) is provided at the bottom end of the second sinking slot (804), a second sinking hole portion (803) is provided at the end of the single-core optical fiber positioning socket (802), and a glue injection hole (808) is provided at the center of the sealing cap (806).

3. The wind turbine blade tip profiler according to claim 2 is characterized in that: A sealing groove (809) is provided on the outer wall of one end of the connecting sleeve (801) close to the sealing cap (806), and a sealing ring (810) is provided in the sealing groove (809).

4. The wind turbine blade tip profile indicator device according to claim 1 is characterized in that: A sink groove (503) is provided near one end of the optical fiber positioning hole (501), and a plurality of sink grooves (503) are provided on the side wall of the sink groove (503) along the circumferential direction.

5. The wind turbine blade tip profile indicator device according to claim 1, characterized in that: The invention also comprises a base block (4), wherein a guide groove (401) is provided on the base block (4), an extension portion (504) is provided at one end of the multi-core optical fiber positioning block (5) and is inserted into the guide groove (401), the width of the guide groove (401) is greater than the width of the extension portion (504) so ​​that the multi-core optical fiber positioning block (5) can move laterally, the extension portion (504) is provided with a through slide groove (505), a sliding block (506) is provided in the through slide groove (505), sleeve portions (509) are provided at both ends of the sliding block (506), an adjustment nut (508) is sleeved on the sleeve portion (509) to limit the lateral displacement of the sliding block (506) in the through slide groove (505), a threaded adjustment screw (507) is provided in the sliding block (506), both ends of the adjustment screw (507) are rotatably sleeved with the inner wall of the guide groove (401), and one end of the adjustment screw (507) passes through the base block (4) to extend out.

6. The wind turbine blade tip profile indicator device according to claim 5, characterized in that: Ear seats (511) are provided at both ends of the multi-core optical fiber positioning block (5), and a threaded stop bolt (512) is provided on the ear seat (511). One end of the stop bolt (512) abuts against the base block (4), and a slope surface (510) is provided on one side of the extension portion (504). A threaded tightening bolt (402) is provided on the side wall at the end of the guide groove (401), and one end of the tightening bolt (402) passes through the side wall of the guide groove (401) to abut against the slope surface (510).

7. The wind turbine blade tip profile indicator device according to claim 5 is characterized in that: The invention also comprises a base (1), wherein a rotatable rotating seat (2) is provided on the base (1), and a rotatable pitching platform (3) is provided on the rotating seat (2). The rotating axes of the rotating seat (2) and the pitching platform (3) are arranged vertically, and the pitching platform (3) is connected to a base block (4).

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