Wind direction adjustment device and method for wind turbine generator set

Abstract

The present invention belongs to the technical field of wind turbines, and in particular to a wind direction adjustment device and method for a wind turbine generator set. In view of the problem that the wind vane in the prior art is too sensitive during detection and requires manual means to finally determine the main wind direction, the following scheme is proposed, including a cover fixed at the top of the fan cover and away from one end of the fan blade fixing head, and the cover includes a side shield of a rectangular frame structure and a top plate fixed to the top thereof, and a hidden hole and a rotating hole are respectively opened in the middle of the top plate near both ends, and a detection mechanism is provided in the rotating hole, and the detection mechanism includes a fixed sleeve that is rotatably connected to the rotating hole and can be positioned at any angle. During the detection of the present invention, when the wind force is too small or consistent with the extension direction of the wind vane head, it is not enough to twist the driven rotating tube to a large extent. At this time, under the resistance of the outer ring spring, the pressure sensor 2 on either side will not be triggered, that is, the controller will not issue an overall steering instruction.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine generators, and in particular to a wind direction regulating device and method for a wind turbine generator set. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the generator to rotate and ultimately outputs alternating current. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the action of wind, and it converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates and generates electricity driven by the wind rotor shaft. In the process of wind power generation, a weather vane is needed to measure the direction of the wind, and the angle of the fan cover of the generator is adjusted according to the wind direction to ensure that the wind rotor, i.e., the fan blades, are facing the wind direction.

[0003] After searching the current wind vane wind devices of wind turbines, it is found that most of them are equipped with a mast on the cabin platform, a wind vane is installed on the upper end of the mast, a cylindrical connecting seat with positioning bolts is provided at the upper end of the mast, the wind vane is installed on the rotating shaft provided at the upper end of the wind vane tube, the connecting column at the lower end of the wind vane tube cooperates with the inner hole of the connecting seat, and is fixed by positioning bolts, and a rotor capable of detecting wind speed is also sleeved on the outer wall of the vertical rod of the wind vane; although this detection device is relatively simple, it is too sensitive to wind capture and cannot effectively and accurately measure the main wind force in the incoming direction. Therefore, we need a wind direction adjustment device that can accurately measure the effective wind force. Summary of the invention

[0004] In view of the technical problem that the wind vane detection in the prior art is too sensitive and requires manual means to finally determine the main wind direction, the present invention adopts the following technical solution:

[0005] A wind direction regulating device for a wind turbine generator set comprises a cover fixed at the top of a fan cover and away from one end of a fan blade fixing head, and the cover comprises a side shield of a rectangular frame structure and a top plate fixed at the top thereof, a hidden hole and a rotating hole are respectively opened in the middle of the top plate near both ends, a detection mechanism is arranged in the rotating hole, and the detection mechanism comprises a fixed sleeve rotatably connected in the rotating hole and can be positioned at any angle, and the barrel mouth of the fixed sleeve is downwardly facing and is in a cylindrical structure as a whole, and the top of the fixed sleeve is A driven rotating tube perpendicular to the bottom of the barrel is rotatably connected, and a transverse tube body perpendicular to the driven rotating tube passes through the top of the driven rotating tube, and a wind guide header is welded and fixed at one end of the transverse tube body facing upwind, and an inner sliding column is slidably connected to the transverse tube body; a foam ball is arranged at the end of the inner sliding column away from the wind guide header; a pull rope is fixed at the end of the inner sliding column close to the wind guide header, and the pull rope passes around the top corner of the driven rotating tube and extends to the fixed sleeve, and a double-headed counterweight cone is fixed at the end of the pull rope away from the inner sliding column; the driven rotating tube A fixing ring is sleeved on the bottom end of the tube, and a secondary mark rod is fixed on the circumferential outer wall of the fixing ring just below the wind guide mark head, and two symmetrical fixed ear plates are fixed near the top of the circumferential inner wall of the fixing sleeve, and the two fixed ear plates are respectively located on both sides of the secondary mark rod, and outer ring springs are fixed between the two sides of the secondary mark rod and the corresponding fixed ear plates, and inner springs are fixed on both sides of the secondary mark rod inside the outer ring spring, and pressure sensors 2 adapted to the positions of the inner springs are arranged on opposite sides of the two fixed ear plates; if the incoming wind force is strong and has a large angle with the extension direction of the wind guide mark head, the driven rotating tube can be twisted to a large extent, and at this time, the wind blows the huge foam ball, forcing the wind guide mark head to slowly align with the wind direction, and the secondary mark rod located at the bottom end of the driven rotating tube overcomes the resistance of the outer ring spring and contacts the pressure sensor 2 on the side of the incoming wind direction, and then the controller sends a signal to the fan steering mechanism to control the overall rotation of the fan cover until the head of the fan cover is perpendicular to the incoming wind direction.

[0006] A further configuration of the present invention is that the wind guide vane is flat and vertically arranged in a pointed shape, and the tail end of the wind guide vane is fixed to the end of the horizontal tube body; the end of the inner sliding column away from the foam ball is embedded with a second magnet block, and a tension spring is fixed to the bottom of the end of the horizontal tube body close to the wind guide vane, and a small iron block is fixed to the end of the tension spring close to the second magnet block.

[0007] A further configuration of the present invention is that a wear-resistant sliding ring is embedded at the bottom of the top barrel of the fixed sleeve, and a plurality of vertical rollers distributed at equal distances are embedded on the circumferential inner wall of the wear-resistant sliding ring, a limiting ring is fixed on the circumferential outer wall of the driven rotating tube near the top of the wear-resistant sliding ring, and a plurality of protruding balls are embedded on the lower surface of the limiting ring; this makes the rotation of the driven rotating tube more sensitive and reduces the friction resistance; a socket is reserved at the end of the inner sliding column away from the wind guide header, and a fixing rod is inserted in the socket, a foam ball is inserted at the end of the fixing rod, and the diameter of the foam ball is equal to 2-5 times the length of the horizontal tube body; a strip sliding rod extending toward the direction of the foam ball is fixed near the middle of the circumferential outer wall of the driven rotating tube, the strip sliding rod is consistent with the extension direction of the inner sliding column, and the outer wall of the strip sliding rod is slidably sleeved with a wear-resistant sliding tube, a through hole is opened inside the foam ball, and the wear-resistant sliding tube is inserted in the through hole, and the outer wall of the wear-resistant sliding tube is bonded to the inner wall of the through hole.

[0008] A further configuration of the present invention is that a second fixed pulley is provided at the top of the driven rotating tube, and the pull rope is passed around the second fixed pulley and fished on the center line of the driven rotating tube, provided that the driven rotating tube is in a vertical detection state;

[0009] The circumferential inner wall of the fixed sleeve is provided with three layers of wind force level touch switches, and the three layers of wind force level touch switches all include three mounting wall blocks of equal height and symmetrically distributed on the inner wall of the fixed sleeve, the three mounting wall blocks located on the same layer and in the upper layer are all fixed with a spring plate 1 extending obliquely downward near the center side, and the extension direction of the three spring plates 1 intersects with a fixed vertical pull rope, the three mounting wall blocks located on the same layer and in the middle layer are all fixed with a spring plate 2 extending obliquely downward near the center side, and the three mounting wall blocks located on the same layer and in the bottom layer are all fixed with a spring plate 3 extending obliquely downward near the center side; and the spring plate 1, spring plate 2 and spring plate 3 are all fixed with an arc-shaped blocking rod at one end close to the pull rope; each The top of one of the mounting wall blocks of the first layer is fixed with a cantilever plate extending to the middle, and the lower surface of the cantilever plate is fixed with a buffer spring, and the bottom end of the buffer spring is fixed with an electrical contact point; when the wind force is strong enough to break through the attraction of the second magnet block, the double-headed counterweight cone will impact the three arc-shaped blocking rods of the first layer, i.e. the bottom layer, upward under the action of the pull rope, and the spring plate three at the bottom will bend upward until it contacts the electrical contact point of the layer, thereby activating the alarm, and when the wind force reaches the set alarm level, the controller controls the brake mechanism above the reduction gear box to brake the wind wheel and stop working, and at the same time controls the hydraulic mechanism in the fan blade fixing head to adjust the fan blade to the minimum resistance angle to resist strong winds.

[0010] A further configuration of the present invention is that the taper of the double-headed counterweight cone at one end close to the pull rope is larger, and the taper of the double-headed counterweight cone at one end away from the pull rope is smaller, that is, it is sharper, which can form effective resistance when moving upward in cooperation with the pull rope. When resetting, since it is necessary to break through layers of resistance, the cone near the bottom end is made sharper, and the spring plate one, spring plate two and spring plate three are tilted downward as a whole, which makes it easier to reset the double-headed counterweight cone.

[0011] A further arrangement of the present invention is that a steering sleeve block which is horizontally placed and has an integral cylindrical structure is sleeved on the outer wall of the fixed sleeve, and a fixed insertion hole which is compatible with the outer diameter of the fixed sleeve is opened on the circumferential outer wall of the steering sleeve, extension shafts are fixed at both ends of the steering sleeve, and shaft rod frames which are compatible with the corresponding extension shafts are respectively arranged on both sides of the upper surface of the top plate located at the rotating hole; a worm gear is fixed to one end of the steering sleeve block, and a reduction motor is fixed to the lower surface of the top plate near the oblique lower part of the worm gear, a coupling is fixed to the top end of the output shaft of the reduction motor, and a return spring is fixedly sleeved on the end of the coupling, a transmission rod is fixed to the end of the return spring away from the reduction motor, and a worm sleeve which is meshed with the worm gear is sleeved on the outer wall of the transmission rod.

[0012] A further configuration of the present invention is that the size of the hidden hole is adapted to the size of the foam ball and the fixing rod; by means of the reduction motor and the steering sleeve, when the wind force is huge, the foam ball with large wind resistance can be hidden in the outer cover to reduce the overall wind resistance, thereby preventing the device from being blown away and ensuring the sensitivity of the device.

[0013] The present invention is further configured in that a horizontal sliding roller is fixed to one end of the transmission rod away from the reset spring, and a permanent magnet is embedded in the middle of the sliding roller, and an electromagnet is embedded in the top plate above the permanent magnet; the lower surface of the top plate is located at the front and rear sides of the sliding roller and is respectively fixed with arc-shaped sliding rails with openings facing each other; when the electromagnet is energized, the transmission rod and the worm sleeve can be squeezed to rotate downward as a whole, thereby causing the worm sleeve to disengage from the worm wheel disk, and at this time, the detection mechanism can continue to be controlled to reverse and reset; an L-shaped pressing plate is fixed to the bottom end of the fixed sleeve near the hidden hole, and a lifting rope is fixed to the end of the L-shaped pressing plate away from the fixed sleeve, a guide rope wheel is provided on the upper surface of the top plate between the rotating hole and the hidden hole, and a rope through hole is opened on the top plate near the guide rope wheel, the lifting rope passes through the rope through hole, then bypasses the guide rope wheel and then passes downward through the rope through hole to fix a reset counterweight block; in conjunction with the setting of the lifting rope and the reset counterweight block, the detection mechanism can be slowly reset when the worm sleeve is disengaged from the worm wheel disk.

[0014] A further configuration of the present invention is that an L-shaped limit frame is fixed on the lower surface of the top plate near the rope through hole, and a pressure sensor is fixed to the bottom end of the L-shaped limit frame, and a telescopic pressure rod is fixed to the side of the L-shaped pressure plate away from the fixed sleeve. Due to the provision of the pressure sensor, when protecting the device, the rotation of the reduction motor can be stopped when the pressure sensor is touched.

[0015] A method for adjusting the wind direction of a wind turbine generator set comprises the following steps:

[0016] Step 1: Before use, connect the two pressure sensors 2 to the overall steering control system for controlling the fan housing, and connect the wind force level touch switch to the hydraulic system for controlling the fan blade angle and the brake mechanism for controlling the overall stop;

[0017] Step 2: During normal testing, when the wind force is too small or consistent with the extension direction of the wind guide head, it is not enough to twist the driven rotating tube to a large extent. At this time, under the resistance of the outer ring spring, the pressure sensor 2 on either side will not be triggered, that is, the controller will not issue a command to turn the fan cover;

[0018] If the incoming wind is strong and has a large angle with the extension direction of the wind guide vane, the driven rotating tube will be twisted to a large extent. At the same time, the wind blows the huge foam ball, forcing the wind guide vane to slowly align with the wind direction. The auxiliary vane at the bottom of the driven rotating tube overcomes the resistance of the outer ring spring and contacts the second pressure sensor on the side of the incoming wind direction. Then the controller sends a signal to the fan steering mechanism and controls the overall rotation of the fan cover until the head of the fan cover is perpendicular to the incoming wind direction.

[0019] Step three: When the wind force is strong enough to break through the attraction of magnet block 2, the double-headed counterweight cone will impact the three arc-shaped blocking rods of the first layer, i.e. the bottom layer, upward under the force of the pull rope. At this time, the spring plate 3 at the bottom will bend upward until it contacts the electrical contact point of this layer, thereby activating the alarm and the hydraulic mechanism will adjust the fan blade angle. When the wind force continues to increase and reaches the set danger alarm level, the controller will control the brake mechanism above the reduction gear box to brake the wind wheel, stop the fan, and at the same time control the hydraulic mechanism in the fan blade fixing head to adjust the fan blade to the minimum resistance angle.

[0020] The beneficial effects of the present invention are:

[0021] 1. By setting a secondary pole opposite to the position of the wind guide head and cooperating with the outer ring springs between its two sides and the fixed ear plates, when the wind force is too small or consistent with the extension direction of the wind guide head, it is not enough to twist the driven rotating tube to a large extent. At this time, under the resistance of the outer ring spring, the pressure sensor 2 on either side will not be triggered, that is, the controller will not issue an overall steering command.

[0022] 2. By setting the tension spring and the second magnet block, during the detection process, when the wind speed is small to a certain extent, that is, when the magnet block 2 and the small iron block cannot be broken free from the attraction, it can be judged as a negligible wind force level. Once the wind force reaches the point where the attraction of the magnet block 2 can be broken free, the wind force level can be judged based on the position of the double-headed counterweight cone at the bottom. Low wind speed judgment can be made by physical means to reduce the possibility of misjudgment.

[0023] 3. By setting a double-ended counterweight cone with different tapers at both ends, effective resistance can be formed when moving upward with the pull rope. When resetting, since it is necessary to break through layers of resistance, the cone near the bottom is made sharper, and the spring plates one, two and three are tilted downward as a whole, making it easier to reset the double-ended counterweight cone. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall installation position structure of a wind direction adjustment device for a wind turbine generator set proposed by the present invention;

[0025] Figure 2 A schematic diagram of the overall structure of a wind direction regulating device of a wind turbine generator set in a working state according to the present invention;

[0026] Figure 3 A partial cross-sectional structural schematic diagram of an outer cover in a wind direction regulating device of a wind turbine generator set proposed by the present invention;

[0027] Figure 4 A partial cross-sectional structural schematic diagram of a wind direction regulating device of a wind turbine generator set in a protection state proposed by the present invention;

[0028] Figure 5 A partial cross-sectional structural schematic diagram of a wind direction adjustment device of a wind turbine generator set proposed by the present invention when preparing to reset;

[0029] Figure 6 A schematic diagram of the internal structure of a wind direction regulating device for a wind turbine generator set proposed by the present invention;

[0030] Figure 7 This is a front view of a wind direction adjustment device for a wind turbine generator set proposed by the present invention with the side shield removed;

[0031] Figure 8 A schematic diagram of the main structure of a detection mechanism in a wind direction adjustment device of a wind turbine generator set proposed by the present invention;

[0032] Fig. 9 This is a schematic diagram of the structure of a detection mechanism in a wind direction adjustment device of a wind turbine generator set proposed by the present invention after removing a fixing sleeve;

[0033] Fig.10 A schematic cross-sectional view of a detection mechanism in a wind direction adjustment device of a wind turbine generator set proposed by the present invention;

[0034] Fig.11 A wind direction regulating device for a wind turbine generator set proposed by the present invention Fig.10 A schematic diagram of the enlarged structure at A in the middle;

[0035] Fig.12 A wind direction regulating device for a wind turbine generator set proposed by the present invention Fig.10 A schematic diagram of the enlarged structure at B in the middle;

[0036] Fig.13 This is a schematic diagram of the assembly structure of a fixed sleeve in a wind direction adjustment device of a wind turbine generator set proposed by the present invention;

[0037] Fig.14 The present invention provides a schematic cross-sectional structural diagram of a resetting mechanism of a wind direction regulating device of a wind turbine generator set.

[0038] In the figure: 1, side guard; 2, foam ball; 201, wear-resistant sliding pipe; 3, wind guide head; 4, fan outer cover; 5, reduction box; 6, brake mechanism; 7, fan blade fixing head; 8, fan steering mechanism; 9, top plate; 901, hidden hole; 902, rotating hole; 10, fixing rod; 11, strip sliding rod; 12, inner sliding column; 13, horizontal tube body; 14, driven rotating pipe; 15, fixing sleeve; 151, mounting wall block; 152, wear-resistant slip ring; 16, steering sleeve; 161, worm wheel; 162, fixing socket; 17, shaft rod frame; 18, electromagnet; 19, reduction motor machine; 20, reset spring; 21, double-headed counterweight cone; 22, transmission rod; 23, reset counterweight block; 24, lifting rope; 25, arc-shaped slide rail; 26, permanent magnet; 27, worm sleeve; 28, L-shaped limit frame; 29, telescopic pressure rod; 30, guide rope wheel; 31, spring plate one; 32, spring plate two; 33, spring plate three; 34, outer ring spring; 35, auxiliary benchmark; 36, arc-shaped blocking rod; 37, pull rope; 38, magnet block two; 39, tension spring; 40, inner spring; 41, pressure sensor two; 42, cantilever plate; 43, buffer spring; 44, electrical contact point. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0040] Reference Figure 1-14A wind direction adjustment device for a wind turbine generator set includes a cover fixed at the top of a fan cover 4 and away from one end of a fan blade fixing head 7, and the cover includes a side shield 1 of a rectangular frame structure and a top plate 9 fixed to the top thereof, a hidden hole 901 and a rotating hole 902 are respectively opened in the middle of the top plate 9 near both ends, a detection mechanism is arranged in the rotating hole 902, and the detection mechanism includes a fixed sleeve 15 rotatably connected in the rotating hole 902 and can be positioned at any angle, and the barrel mouth of the fixed sleeve 15 is downwardly facing and is in a cylindrical structure as a whole, and the top of the fixed sleeve 15 is rotatably connected to a fixed sleeve 15 with a fixed sleeve 15 having a fixed sleeve 15 disposed on the top of the fixed sleeve 15. The bottom of the barrel is vertical with a driven rotating tube 14, and the top of the driven rotating tube 14 is penetrated by a horizontal tube body 13 which is vertical to the driven rotating tube 14, and the end of the horizontal tube body 13 facing upwind is welded and fixed with a wind guide header 3, and the inner sliding column 12 is slidably connected in the horizontal tube body 13; the end of the inner sliding column 12 away from the wind guide header 3 is provided with a foam ball 2; the end of the inner sliding column 12 close to the wind guide header 3 is fixed with a pull rope 37, and the pull rope 37 bypasses the top corner of the driven rotating tube 14 and extends to the fixed sleeve 15, and the end of the pull rope 37 away from the inner sliding column 12 is fixed with a double-headed counterweight cone 21;

[0041] A fixing ring is sleeved on the bottom end of the driven rotating tube 14, and a secondary mark rod 35 is fixed on the circumferential outer wall of the fixing ring just below the wind guide mark head 3, and two symmetrical fixed ear plates are fixed on the circumferential inner wall of the fixed sleeve 15 near the top, and the two fixed ear plates are respectively located on both sides of the secondary mark rod 35, and outer ring springs 34 are fixed between the two sides of the secondary mark rod 35 and the corresponding fixed ear plates, and inner springs 40 are fixed on both sides of the secondary mark rod 35 inside the outer ring springs 34, and pressure sensors 41 matched with the position of the inner springs 40 are arranged on the opposite sides of the two fixed ear plates; by arranging the secondary mark rod 35 directly opposite to the position of the wind guide mark head 3, and cooperating with the outer ring springs 34 between its two sides and the fixed ear plates, when the wind force is too small or the wind guide mark head 3 is in conflict with the wind guide mark head 3, the pressure sensor 41 can be adjusted to the desired position. If the extension direction is consistent, it is not enough to twist the driven rotating tube 14 to a large extent. At this time, under the resistance of the outer ring spring 34, the pressure sensor 2 41 on either side will not be triggered, that is, the controller will not issue an overall steering command; if the incoming wind is strong and has a large angle with the extension direction of the wind guide head 3, the driven rotating tube 14 can be twisted to a large extent. At this time, the wind blows the huge foam ball 2, forcing the wind guide head 3 to slowly align with the wind direction. The secondary mark rod 35 at the bottom end of the driven rotating tube 14 overcomes the resistance of the outer ring spring 34 and contacts the pressure sensor 2 41 on the side of the incoming wind direction. Then the controller sends a signal to the fan steering mechanism 8 to control the overall rotation of the fan cover 4 until the head of the fan cover 4 is perpendicular to the incoming wind direction.

[0042] In the present invention, the wind guide vane 3 is a flat, vertically arranged pointed shape, and the tail end of the wind guide vane 3 is fixed to the end of the cross tube body 13; a magnet block 2 38 is embedded in the end of the inner sliding column 12 away from the foam ball 2, and a tension spring 39 is fixed to the bottom of the end of the cross tube body 13 close to the wind guide vane 3, and a small iron block is fixed to the end of the tension spring 39 close to the magnet block 2 38; through the provision of the tension spring 39 and the magnet block 2 38, during the detection process, when the wind speed is small to a certain extent, that is, when the magnet block 2 38 and the small iron block cannot be broken free from the attraction, it is judged as a wind force level that can be ignored. Once the wind force reaches the gravitational force that breaks free from the magnet block 2 38, the wind force level can be judged according to the position of the double-headed counterweight cone 21 at the bottom.

[0043] Please refer to Figure 8 and Fig.10 A wear-resistant slip ring 152 is embedded at the bottom of the top barrel of the fixed sleeve 15, and a plurality of vertical rollers distributed at equal distances are embedded on the circumferential inner wall of the wear-resistant slip ring 152. A limit ring is fixed on the circumferential outer wall of the driven rotating tube 14 near the top of the wear-resistant slip ring 152, and a plurality of protruding balls are embedded on the lower surface of the limit ring; this makes the rotation of the driven rotating tube 14 more sensitive and reduces the friction resistance; a socket is reserved at one end of the inner sliding column 12 away from the wind guide header 3, and a fixing rod 10 is inserted into the socket, and a foam ball 2 It is inserted at the end of the fixed rod 10, and the diameter of the foam ball 2 is equal to 2-5 times the length of the horizontal tube body 13; a strip slide rod 11 extending toward the foam ball 2 is fixed near the middle of the circumferential outer wall of the driven rotating tube 14, and the extension direction of the strip slide rod 11 is consistent with that of the inner slide column 12, and the outer wall of the strip slide rod 11 is slidably sleeved with a wear-resistant slide tube 201, a through hole is opened inside the foam ball 2, and the wear-resistant slide tube 201 is inserted into the through hole, and the outer wall of the wear-resistant slide tube 201 is bonded to the inner wall of the through hole.

[0044] Please refer to Fig.10 , a fixed pulley 2 is provided at the top of the driven rotating tube 14, and the pull rope 37 is passed around the fixed pulley 2 and fished on the center line of the driven rotating tube 14, provided that the driven rotating tube 14 is in a vertical detection state;

[0045] Please refer to Figure 9-12The circumferential inner wall of the fixed sleeve 15 is provided with three layers of wind force level touch switches, and the three layers of wind force level touch switches all include three mounting wall blocks 151 of equal height and centrally symmetrically distributed on the inner wall of the fixed sleeve 15, the three mounting wall blocks 151 located on the same layer and in the upper layer are all fixed with a spring plate 1 31 extending obliquely downward near the center side, and the extension direction of the three spring plates 1 31 intersects with the fixed vertical pull rope 37, the three mounting wall blocks 151 located on the same layer and in the middle layer are all fixed with a spring plate 2 32 extending obliquely downward near the center side, and the three mounting wall blocks 151 located on the same layer and in the bottom layer are all fixed with a spring plate 3 33 extending obliquely downward near the center side; and the spring plate 1 31, the spring plate 2 32 and the spring plate 3 33 are all fixed with an arc-shaped blocking rod at one end close to the pull rope 37. 36; A cantilever plate 42 extending toward the middle is fixed to the top of one of the mounting wall blocks 151 of each layer, and a buffer spring 43 is fixed to the lower surface of the cantilever plate 42, and an electrical contact point 44 is fixed to the bottom end of the buffer spring 43; when the wind force is strong enough to break through the attraction of the second magnet block 38, the double-headed counterweight cone 21 will impact upward the three arc-shaped blocking rods 36 of the first layer, i.e., the bottom layer, under the action of the pull rope 37, and the spring plate 33 at the bottom will bend upward until it contacts the electrical contact point 44 of the layer, and then the alarm is activated. When the wind force reaches the set alarm level, the controller controls the brake mechanism 6 above the reduction box 5 to brake the wind wheel and stop working, and at the same time controls the hydraulic mechanism in the fan blade fixing head 7 to adjust the fan blade to the minimum resistance angle to resist strong winds.

[0046] Please refer to Fig.10 The taper of the double-headed counterweight cone 21 at the end close to the pull rope 37 is larger, and the taper of the double-headed counterweight cone 21 at the end away from the pull rope 37 is smaller, that is, it is sharper, which can form effective resistance when moving upward with the pull rope 37. When resetting, since it is necessary to break through layers of resistance, the cone near the bottom is made sharper, and the spring plate 1 31, spring plate 2 32 and spring plate 33 are tilted downward as a whole, so it is easier to reset the double-headed counterweight cone 21.

[0047] Please refer to Figure 6-7 and Fig.13, the outer wall of the fixed sleeve 15 is sleeved with a horizontally placed steering sleeve 16 which is an integral cylindrical structure, and the circumferential outer wall of the steering sleeve 16 is provided with a fixed plug hole 162 which is adapted to the outer diameter of the fixed sleeve 15, and both ends of the steering sleeve 16 are fixed with extension shafts, and the upper surface of the top plate 9 is located on both sides of the rotating hole 902 and is respectively provided with shaft rod frames 17 which are adapted to the corresponding extension shafts; a worm wheel 161 is fixed near one end of the steering sleeve 16, and a reduction motor 19 is fixed on the lower surface of the top plate 9 near the oblique lower side of the worm wheel 161, a coupling is fixed on the top end of the output shaft of the reduction motor 19, and a return spring 20 is fixedly sleeved at the end of the coupling, a transmission rod 22 is fixed to the end of the return spring 20 away from the reduction motor 19, and a worm sleeve 27 which meshes with the worm wheel 161 is sleeved on the outer wall of the transmission rod 22;

[0048] Please refer to Figure 4 The size of the hidden hole 901 is adapted to the size of the foam ball 2 and the fixing rod 10; by providing the reduction motor 19 and the steering sleeve 16, the foam ball 2 with large wind resistance can be hidden in the outer cover when the wind is strong to reduce the overall wind resistance, thereby preventing the device from being blown away and ensuring the sensitivity of the device.

[0049] Please refer to Figure 4-5 and Figure 7 , a horizontal sliding roller is fixed to the end of the transmission rod 22 away from the reset spring 20, and a permanent magnet 26 is embedded in the middle of the sliding roller, and an electromagnet 18 is embedded above the permanent magnet 26 on the top plate 9; the lower surface of the top plate 9 is located on the front and rear sides of the sliding roller and is respectively fixed with arc-shaped sliding rails 25 with openings facing each other; when the electromagnet 18 is energized, the transmission rod 22 and the worm sleeve 27 can be squeezed to rotate downward as a whole, and then the worm sleeve 27 is disengaged from the worm wheel 161, and the detection mechanism can continue to be controlled to reverse and reset; the bottom end of the fixed sleeve 15 is close to the bottom of the fixed sleeve 15 An L-shaped pressure plate is fixed near the hidden hole 901, and a lifting rope 24 is fixed to the end of the L-shaped pressure plate away from the fixed sleeve 15. A guide rope wheel 30 is arranged on the upper surface of the top plate 9 between the rotating hole 902 and the hidden hole 901, and a rope through hole is opened near the guide rope wheel 30 on the top plate 9. The lifting rope 24 passes through the rope through hole, then bypasses the guide rope wheel 30 and then passes downward through the rope through hole where a reset counterweight 23 is fixed. With the arrangement of the lifting rope 24 and the reset counterweight 23, the detection mechanism can be slowly reset when the worm sleeve 27 is disengaged from the worm wheel disc 161.

[0050] Please refer to Figure 4-5 An L-shaped limit frame 28 is fixed to the lower surface of the top plate 9 near the rope penetration hole, and a pressure sensor 1 is fixed to the bottom end of the L-shaped limit frame 28, and a telescopic pressure rod 29 is fixed to the side of the L-shaped pressure plate away from the fixed sleeve 15. Due to the provision of the pressure sensor 1, when protecting the device, the rotation of the reduction motor 19 can be stopped when the pressure sensor 1 is touched.

[0051] A method for adjusting the wind direction of a wind turbine generator set comprises the following steps:

[0052] Step 1: Before use, connect the two pressure sensors 41 to the overall steering control system of the fan housing 4, and connect the wind force level trigger switch to the hydraulic system for controlling the fan blade angle and the brake mechanism 6 for controlling the overall stop;

[0053] Step 2: During normal detection, when the wind force is too small or consistent with the extension direction of the wind guide head 3, it is not enough to twist the driven rotating tube 14 to a large extent. At this time, under the resistance of the outer ring spring 34, the pressure sensor 2 41 on either side will not be triggered, that is, the controller will not issue a command to turn the fan cover 4;

[0054] If the incoming wind is strong and has a large angle with the extension direction of the wind guide head 3, the driven rotating tube 14 will be twisted to a large extent. At the same time, the wind blows the huge foam ball 2, forcing the wind guide head 3 to slowly align with the wind direction. The auxiliary rod 35 at the bottom of the driven rotating tube 14 overcomes the resistance of the outer ring spring 34 and contacts the pressure sensor 2 41 on the side of the incoming wind direction. Then the controller sends a signal to the fan steering mechanism 8 and controls the fan cover 4 to rotate as a whole until the head of the fan cover 4 is perpendicular to the incoming wind direction.

[0055] Step three: When the wind force is strong enough to break through the attraction of the second magnet block 38, the double-headed counterweight cone 21 will impact the three arc-shaped blocking rods 36 of the first layer, i.e. the bottom layer, upwardly under the action of the pull rope 37. At this time, the spring plate 3 33 at the bottom will bend upwardly until it contacts the electrical contact point 44 of this layer, and then the alarm will be activated, and the hydraulic mechanism will adjust the angle of the fan blades. When the wind force continues to increase and reaches the set danger alarm level, the controller will control the brake mechanism 6 above the reduction box 5 to brake the wind wheel, stop the fan, and at the same time control the hydraulic mechanism in the fan blade fixing head 7 to adjust the fan blades to the minimum resistance angle.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wind direction adjustment device for a wind turbine generator set, comprising a cover fixed at the top of a fan cover (4) and away from one end of a fan blade fixing head (7), wherein the cover comprises a side shield (1) of a rectangular frame structure and a top plate (9) fixed at the top thereof, wherein a hidden hole (901) and a rotation hole (902) are respectively opened in the middle of the top plate (9) near both ends, wherein: A detection mechanism is provided in the rotating hole (902), and the detection mechanism comprises a fixed sleeve (15) rotatably connected in the rotating hole (902) and capable of being positioned at any angle; The top end of the fixed sleeve (15) is rotatably connected to a driven rotating pipe (14) perpendicular to the bottom of the barrel, and the top end of the driven rotating pipe (14) is penetrated by a transverse tube body (13) perpendicular to the driven rotating pipe (14), and an air guide head (3) is welded and fixed to one end of the transverse tube body (13) facing the upwind direction; An inner sliding column (12) is slidably connected in the transverse tube body (13); a foam ball (2) is arranged at one end of the inner sliding column (12) away from the wind guide mark head (3); a pull rope (37) is fixed at one end of the inner sliding column (12) close to the wind guide mark head (3), and the pull rope (37) bypasses the top corner of the driven rotating tube (14) and extends into the fixed sleeve (15); a double-headed counterweight cone (21) is fixed at one end of the pull rope (37) away from the inner sliding column (12); a fixing ring is sleeved at the bottom end of the driven rotating tube (14), and a secondary mark rod (35) is fixed on the circumferential outer wall of the fixing ring just below the wind guide mark head (3), and two mutually symmetrical fixing ear plates are fixed on the circumferential inner wall of the fixing sleeve (15) near the top, and the two fixing ear plates are respectively located on both sides of the secondary mark rod (35). , outer ring springs (34) are fixed between the two sides of the auxiliary mark rod (35) and the corresponding fixed ear plates, and inner springs (40) are fixed on the two sides of the auxiliary mark rod (35) and located inside the outer ring springs (34), and two pressure sensors (41) adapted to the position of the inner springs (40) are arranged on the opposite sides of the two fixed ear plates; the wind guide head (3) is a flat vertically arranged pointed head, and the tail end of the wind guide head (3) is fixed to the end of the horizontal tube body (13); the end of the inner sliding column (12) away from the foam ball (2) is embedded with a second magnet block (38), and a tension spring (39) is fixed at the bottom of the end of the horizontal tube body (13) close to the wind guide head (3), and a small iron block is fixed to the end of the tension spring (39) close to the second magnet block (38).

2. The wind direction regulating device of a wind turbine generator set according to claim 1, characterized in that: A wear-resistant slip ring (152) is embedded at the bottom of the top barrel of the fixed sleeve (15), and a plurality of vertical rollers distributed at equal distances are embedded on the circumferential inner wall of the wear-resistant slip ring (152). A limit ring is fixed to the circumferential outer wall of the driven rotating tube (14) near the top of the wear-resistant slip ring (152), and a plurality of protruding balls are embedded on the lower surface of the limit ring. A socket is reserved at one end of the inner sliding column (12) away from the wind guide head (3), and a fixing rod (10) is inserted into the socket. The foam ball (2) is inserted into the end of the fixing rod (10), and The diameter of the foam ball (2) is equal to 2-5 times the length of the transverse tube body (13); a strip slide bar (11) extending in the direction of the foam ball (2) is fixed near the middle of the circumferential outer wall of the driven rotating tube (14); the strip slide bar (11) and the inner slide column (12) extend in the same direction; and a wear-resistant slide tube (201) is slidably sleeved on the outer wall of the strip slide bar (11); a through hole is opened inside the foam ball (2), and the wear-resistant slide tube (201) is inserted into the through hole; and the outer wall of the wear-resistant slide tube (201) is bonded to the inner wall of the through hole.

3. The wind direction regulating device of a wind turbine generator set according to claim 1, characterized in that: A second fixed pulley is provided at the top of the driven rotating tube (14), and the pull rope (37) passes around the second fixed pulley and is hooked on the center line of the driven rotating tube (14), provided that the driven rotating tube (14) is in a vertical detection state; The circumferential inner wall of the fixed sleeve (15) is provided with three layers of wind force level touch switches, and the three layers of wind force level touch switches each include three mounting wall blocks (151) of equal height and centrally symmetrically distributed on the inner wall of the fixed sleeve (15), the three mounting wall blocks (151) located at the same layer and at the upper layer are all fixed with a spring plate (31) extending obliquely downward near the center side, the extension direction of the three spring plates (31) intersects with a fixed vertical pull rope (37), and the three mounting wall blocks (151) located at the same layer and at the middle layer are all fixed with a spring plate (31) extending obliquely downward near the center side. Spring plate 2 (32), three mounting wall blocks (151) located in the same layer and at the bottom layer are all fixed with spring plate 3 (33) extending obliquely downward near the center side; and spring plate 1 (31), spring plate 2 (32) and spring plate 3 (33) are all fixed with arc-shaped blocking rods (36) at one end near the pull rope (37); a cantilever plate (42) extending toward the middle is fixed at the top end of one of the mounting wall blocks (151) of each layer, and a buffer spring (43) is fixed on the lower surface of the cantilever plate (42), and an electrical contact point (44) is fixed at the bottom end of the buffer spring (43).

4. The wind direction regulating device of a wind turbine generator set according to claim 3, characterized in that: The taper of the double-ended counterweight cone (21) at one end close to the pull rope (37) is larger, while the taper of the double-ended counterweight cone (21) at one end away from the pull rope (37) is smaller.

5. The wind direction regulating device of a wind turbine generator set according to claim 4, characterized in that: The outer wall of the fixed sleeve (15) is sleeved with a horizontally placed steering sleeve (16) having an integral cylindrical structure, and the outer circumferential wall of the steering sleeve (16) is provided with a fixed insertion hole (162) matching the outer diameter of the fixed sleeve (15), both ends of the steering sleeve (16) are fixed with extension shafts, and the upper surface of the top plate (9) is located on both sides of the rotation hole (902) and is respectively provided with shaft rod frames (17) matching the corresponding extension shafts; the steering sleeve (16) is close to the outer wall thereof. A worm wheel (161) is fixed at one end, and a reduction motor (19) is fixed on the lower surface of the top plate (9) close to the oblique lower side of the worm wheel (161), a coupling is fixed at the top end of the output shaft of the reduction motor (19), and a return spring (20) is fixedly sleeved at the end of the coupling, a transmission rod (22) is fixed at one end of the return spring (20) away from the reduction motor (19), and a worm sleeve (27) meshing with the worm wheel (161) is sleeved on the outer wall of the transmission rod (22).

6. The wind direction regulating device of a wind turbine generator set according to claim 5, characterized in that: The size of the hidden hole (901) is compatible with the size of the foam ball (2) and the fixing rod (10).

7. The wind direction regulating device of a wind turbine generator set according to claim 6, characterized in that: A horizontal sliding roller is fixed to one end of the transmission rod (22) away from the reset spring (20), and a permanent magnet (26) is embedded in the middle of the sliding roller. An electromagnet (18) is embedded on the top plate (9) located above the permanent magnet (26); arc-shaped sliding rails (25) with openings facing each other are fixed to the lower surface of the top plate (9) at the front and rear sides of the sliding roller; an L-shaped pressing plate is fixed to the bottom end of the fixed sleeve (15) near the hidden hole (901), and a suspension rope (24) is fixed to the end of the L-shaped pressing plate away from the fixed sleeve (15); a guide rope wheel (30) is provided on the upper surface of the top plate (9) between the rotating hole (902) and the hidden hole (901), and a rope through hole is opened on the top plate (9) near the guide rope wheel (30), and the suspension rope (24) passes through the rope through hole, then bypasses the guide rope wheel (30), and then passes downward through the rope through hole to be fixed with a reset counterweight (23).

8. The wind direction regulating device of a wind turbine generator set according to claim 7, characterized in that: An L-shaped limit frame (28) is fixed to the lower surface of the top plate (9) near the rope through hole, a pressure sensor 1 is fixed to the bottom end of the L-shaped limit frame (28), and a telescopic pressure rod (29) is fixed to the side of the L-shaped pressure plate away from the fixed sleeve (15).

9. A method for adjusting the wind direction of a wind generator set, comprising a wind direction adjusting device for a wind generator set as claimed in claim 8, characterized in that: The following steps are involved: Step 1: Before use, connect the two pressure sensors 2 (41) to the overall steering control system of the fan housing (4), and connect the wind force level trigger switch to the hydraulic system for controlling the fan blade angle and the brake mechanism (6) for controlling the overall stop; Step 2: During normal detection, when the wind force is too small or is consistent with the extension direction of the wind guide head (3), it is not enough to twist the driven rotating tube (14) to a large extent. At this time, under the resistance of the outer ring spring (34), the second pressure sensor (41) on either side will not be triggered, that is, the controller will not issue a command to turn the fan cover (4); If the incoming wind is strong and has a large angle with the extension direction of the wind guide head (3), the driven rotating tube (14) will be twisted to a large extent. At the same time, the wind blows the huge foam ball (2), forcing the wind guide head (3) to slowly align with the wind direction. The auxiliary rod (35) at the bottom end of the driven rotating tube (14) overcomes the resistance of the outer ring spring (34) and contacts the second pressure sensor (41) on the side of the incoming wind direction. Then the controller sends a signal to the fan steering mechanism (8) and controls the fan cover (4) to rotate as a whole until the head of the fan cover (4) is perpendicular to the incoming wind direction. Step 3: When the wind force is strong enough to break through the attraction of the second magnet block (38), the double-headed counterweight cone (21) will impact upward the three arc-shaped blocking rods (36) of the first layer, i.e., the bottom layer, under the action of the pull rope (37). At this time, the spring plate (33) at the bottom will bend upward until it contacts the electrical contact point (44) of the layer, and then the alarm will be activated, and the hydraulic mechanism will adjust the fan blade angle. When the wind force continues to increase and reaches the set danger alarm level, the controller will control the brake mechanism (6) above the reduction box (5) to brake the wind wheel and stop the fan, and at the same time control the hydraulic mechanism in the fan blade fixing head (7) to adjust the fan blade to the minimum resistance angle.

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