A stable type of yaw device for wind power generation

Abstract

The present application relates to the technical field of wind power generation equipment, and particularly relates to a stable direction adjuster for wind power generation, which comprises a tower, a rotating seat is arranged at the top end of the tower, a machine cabin is arranged at the top end of the rotating seat, a direction adjusting mechanism is arranged on the surface of the rotating seat, and a supporting mechanism is arranged between the tower and the rotating seat, after the wind direction sensor senses the change of the wind direction, the driving motor drives the rotating seat to rotate through gear transmission, the pulley and the slide rail are matched to reduce friction and limit shaking, the stability of the machine cabin is ensured, when the rotating seat rotates, the sealing plate drives the piston plate to extrude the magnetorheological fluid, the damping force is generated to make the rotation stable, the equipment failure rate is reduced, the wind cup drives the rotating shaft to rotate to generate electricity, the magnetic field strength of the exciting coil is changed, the magnetorheological fluid damping force and the wind power working condition are self-adaptively adjusted, the lubricating mechanism and the direction adjusting mechanism are linked, the lubrication is accurate when the direction is adjusted, the heat is generated by the damping mechanism at low temperature to make the lubricating oil restore the fluidity, and the stable operation of the equipment is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power generation equipment, in particular to a stable direction regulator for wind power generation. BACKGROUND

[0002] Wind energy, as a clean and renewable energy source, plays an increasingly important role in global energy structure adjustment and environmental protection. Wind turbine generators convert wind energy into mechanical energy, which in turn drives the generator to generate electricity, which is currently the main form of wind energy utilization. In a wind power generation system, the direction regulator is one of the core components, which adjusts the orientation of the nacelle and blades according to the change of wind direction to ensure that the wind wheel always faces the wind at the best angle, thereby maximizing the efficiency of wind energy capture.

[0003] However, in strong winds or complex working conditions, the impact load on the direction adjusting system increases, making the nacelle prone to sway or vibration when rotating, affecting the accuracy and stability of direction adjustment.

[0004] Therefore, the existing problems are studied and improved, and a stable direction regulator for wind power generation is provided, which aims to solve the problems and improve the practical value through the technology. SUMMARY

[0005] The purpose of the present application is to solve the shortcomings in the prior art, and a stable direction regulator for wind power generation is proposed. After the wind direction sensor senses the change of wind direction, the driving motor drives the rotating seat to rotate through the gear transmission. The pulley and the slide rail cooperate to reduce friction and limit sway, ensuring the stability of the nacelle. When the rotating seat rotates, the sealing plate drives the piston plate to extrude the magnetorheological fluid, generating damping force to make the rotation smooth, reducing the failure rate of the equipment. The wind cup drives the rotating shaft to rotate to generate electricity, changes the magnetic field strength of the excitation coil, realizes the self-adaptive adjustment of the magnetorheological fluid damping force and the wind working condition, and the lubricating mechanism and the direction adjusting mechanism are linked. When adjusting the direction, lubricate accurately, use the damping mechanism to generate heat at low temperature to restore the fluidity of the lubricating oil, and ensure the stable operation of the equipment.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a stable direction regulator for wind power generation, comprising a tower, a rotating seat rotating at the top of the tower, a nacelle installed at the top of the rotating seat, and a direction adjusting mechanism provided on the surface of the rotating seat.

[0007] A support mechanism is provided between the tower and the rotating seat, the support mechanism comprises a fixed seat sleeved on the outer wall of the rotating seat, a fixed rod is welded on the outer wall of the fixed seat, a slide rail is sleeved on the outer wall of the tower, and a pulley is installed at one end of the fixed rod and slides in the slide rail.

[0008] The lower part of the supporting mechanism is provided with a damping mechanism, the damping mechanism comprises an annular disc which is sleeved on the outer wall of the rotating seat, a sealing plate A is slidably arranged in the annular disc, a piston plate is slidably arranged in the annular disc, a connecting rod is arranged between the bottom end of the fixed rod and the top end of the sealing plate A, the inner cavity of the annular disc is filled with a magneto-rheological fluid, an installation groove is arranged in the annular disc, and an excitation coil is arranged in the installation groove.

[0009] The top end of the cabin is provided with a power generation mechanism, the power generation mechanism comprises a fixed ring installed at the top end of the cabin, a rotating shaft is rotatably arranged in the fixed ring, a magnetic block is sleeved on the outer wall of the rotating shaft in the fixed ring, and an electromagnetic coil matched with the magnetic block is arranged in the fixed ring.

[0010] The outer wall of the rotating seat is sleeved with a protective cover, and the inner part of the protective cover is provided with a lubricating mechanism.

[0011] Preferably, the output end of the cabin is provided with a transmission shaft, and the outer wall of the transmission shaft is provided with a plurality of groups of blades.

[0012] Preferably, the direction adjusting mechanism comprises a mounting seat welded on the outer wall of the rotating seat, a driving motor is installed at the top end of the mounting seat, a gear is installed at the output end of the driving motor, a gear ring meshingly connected with the gear is sleeved on the top end outer wall of the tower, a wind direction sensor is installed at the top end of the cabin, and a cam is rotatably arranged at the bottom end of the driving motor.

[0013] Preferably, a plurality of groups of through holes are arranged on the surface of the piston plate, the number of the piston plates is consistent with the number of the sliding rails, the sliding rails and the piston plates are on the same vertical horizontal line, and the top end of the piston plate is fixedly connected with the bottom end of the sealing plate.

[0014] Preferably, the lubricating mechanism comprises an oil groove installed in the inner part of the protective cover, a sealing plate B is slidably arranged at the bottom end of the oil groove, a plurality of groups of oil injection nozzles are communicated with the top end of the oil groove, and a pushing assembly for oil injection is arranged between the direction adjusting mechanism and the oil groove.

[0015] Preferably, the pushing assembly comprises a sleeve installed at the top end of the oil groove, a gas conveying pipe is communicated between the sleeve and the oil groove, a pressing rod is slidably arranged in the inner part of the sleeve, a spring is sleeved on the outer wall of the pressing rod in the inner part of the sleeve, and a pressing plate is installed at one end of the pressing rod.

[0016] Preferably, a plurality of groups of heat-conducting rods are arranged in the inner part of the sealing plate B, and the top ends of the heat-conducting rods extend into the inner part of the oil groove, one end of each of the heat-conducting rods is fixedly connected with the inner wall of the annular disc, and the heat-conducting rods are made of copper.

[0017] Preferably, a one-way air suction valve is installed at one end of the sleeve, and a one-way air exhaust valve is installed at the connection between the gas conveying pipe and the oil groove.

[0018] Preferably, the top end of the rotating shaft is provided with a wind cup, and the excitation coil is electrically connected with the electromagnetic coil through a wire.

[0019] Preferably, the driving motor is a reversible motor, and the driving motor is signal connected with the wind direction sensor.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] 1、The wind direction sensor senses the change of wind direction, and the driving motor is started to drive the rotating seat to rotate around the tower through the meshing transmission of the gear and the gear ring, and in the process, the fixed seat closely connected with the rotating seat also rotates, and since the fixed rod is welded to the outer wall of the fixed seat, the fixed rod rotates with the fixed seat, and when the fixed rod rotates, the pulley rolls in the slide rail, and the rolling friction between the pulley and the slide rail is smaller than the sliding friction, so that the rotation of the rotating seat is more smooth, and at the same time, the rolling of the pulley in the slide rail can limit the shaking of the rotating seat in the horizontal direction, and provides stable support for the rotating seat, so that the rotating seat can maintain a stable posture when adjusting the direction, and will not be greatly deviated or shaken due to the action of wind force, thereby ensuring the stability of the cabin installed at the top end of the rotating seat during rotation.

[0022] 2、When the driving motor drives the rotating seat to rotate, the fixed rod connected with the rotating seat also rotates, the bottom end of the fixed rod is connected with the top end of the sealing plate A through the connecting rod, so that the rotation of the fixed rod drives the sealing plate A to slide in the annular disc, and the sliding of the sealing plate A drives the piston plate to extrude the magnetorheological fluid filled in the inner cavity of the annular disc, and since the surface of the piston plate is provided with a plurality of through holes, the magnetorheological fluid can flow through the through holes and generate damping force in the flowing process, so that the damping force can make the rotation of the rotating seat more stable, avoid the phenomenon that the rotating seat shakes violently or loses control due to sudden change of wind force or too rapid action of the driving motor, and reduce the damage of vibration and impact to each part of the equipment, so as to effectively reduce the failure rate of the equipment.

[0023] 3、The application is driven by wind power to drive the rotation of the wind cup, the outer wall of the rotating shaft, the magnetic block rotates synchronously to cut the magnetic induction line of the electromagnetic coil in the fixed ring, and the electric energy is generated according to the principle of electromagnetic induction. The electromagnetic coil and the excitation coil are connected through the wire, and the generated electric energy is transmitted to the excitation coil for power supply. When the wind power changes, the rotating speed of the rotating shaft driven by the wind cup changes, and the electric energy changes accordingly: when the wind power increases, the electric energy generated by the electromagnetic coil increases, the magnetic field of the excitation coil is enhanced, the damping force of the magnetorheological fluid is improved, the vibration of the rotating seat in the strong wind is inhibited, and the accurate direction adjustment is ensured; when the wind power decreases, the electric energy decreases, the magnetic field of the excitation coil decreases, and the viscosity of the magnetorheological fluid decreases, so that the rotating seat rotates flexibly. Thus, the adaptive adjustment of the damping force and the wind power condition is realized, the flexible response of the equipment to the change of the wind direction is ensured, the environmental adaptability and reliability of the equipment are improved, and the application range is widened.

[0024] 4、The lubricating mechanism of the application is linked with the direction adjusting mechanism, when the direction adjusting mechanism works, the driving motor drives the cam to rotate, the cam pushes the compression rod to compress the air in the sleeve, the compressed air enters the oil tank through the gas conveying pipe, the lubricating oil is pressed, the lubricating oil is accurately sprayed to the key position of the gear and the gear ring through the oil nozzle, a lubricating film is formed, friction is reduced, the service life of the parts is prolonged, the maintenance cost is reduced, the operation efficiency of the equipment is improved, in the low temperature environment, the viscosity of the lubricating oil increases and cannot be normally sprayed, at this time, the damping mechanism in the annular disc works, the heat generated by the magnetorheological fluid is conducted to the heat conducting rod through the annular disc, and then is transmitted to the lubricating oil in the oil tank, so that the lubricating oil is heated and the viscosity is reduced, the flowability is restored, the lubricating oil can be normally sprayed and an effective lubricating film can be formed, and the equipment can also stably operate in the low temperature working condition. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall structure schematic diagram of the application;

[0026] Figure 2 It is the structure schematic diagram of the supporting mechanism of the application;

[0027] Figure 3 It is the internal structure schematic diagram of the protective cover of the application;

[0028] Figure 4 It is the structure schematic diagram of the damping mechanism and the power generation mechanism of the application;

[0029] Figure 5 It is the structure schematic diagram of the Figure 4 A part of the application is enlarged;

[0030] Figure 6 It is the structure schematic diagram of the Figure 4 B part of the application is enlarged;

[0031] Figure 7 It is the structure schematic diagram of the protective cover of the application;

[0032] Figure 8For the purpose of the present invention Figure 7 The schematic diagram of the C part amplification structure.

[0033] Legend:

[0034] 1, tower; 2, rotating seat; 3, engine room; 4, transmission shaft; 5, blade; 6, steering mechanism; 601, mounting seat; 602, drive motor; 603, gear; 604, gear ring; 605, wind direction sensor; 606, cam; 7, support mechanism; 701, fixed seat; 702, fixed rod; 703, slide rail; 704, pulley; 8, damping mechanism; 801, ring disc; 802, sealing plate A; 803, piston plate; 804, connecting rod; 805, magnetorheological fluid; 806, mounting groove; 807, excitation coil; 9, power generation mechanism; 901, fixed ring; 902, rotating shaft; 903, magnetic block; 904, electromagnetic coil; 905, wind cup; 906, wire; 10, protective cover; 11, lubricating mechanism; 1101, oil groove; 1102, sealing plate B; 1103, heat conduction rod; 1104, oil nozzle; 1105, sleeve; 1106, gas delivery pipe; 1107, pressing rod; 1108, spring; 1109, pressing plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0036] Referring to Figures 1 to 8 As shown in the drawings, the present application provides a stable steering device for wind power generation, which comprises a tower 1, a rotating seat 2 is rotatably arranged at the top end of the tower 1, an engine room 3 is mounted at the top end of the rotating seat 2, and a steering mechanism 6 is arranged on the surface of the rotating seat 2;

[0037] A support mechanism 7 is arranged between the tower 1 and the rotating seat 2, the support mechanism 7 comprises a fixed seat 701 which is sleeved on the outer wall of the rotating seat 2, a fixed rod 702 is welded on the outer wall of the fixed seat 701, a slide rail 703 is sleeved on the outer wall of the tower 1, and a pulley 704 is mounted at one end of the fixed rod 702 and slides in the slide rail 703;

[0038] It should be noted that when the wind direction changes, the wind direction sensor 605 senses the change in wind direction, the control driving motor 602 starts, the driving motor 602 drives the rotating seat 2 to rotate around the tower 1 through the meshing transmission of the gear 603 and the gear ring 604, in this process, the fixed seat 701 closely connected with the rotating seat 2 also rotates, since the fixed rod 702 is welded on the outer wall of the fixed seat 701, so the fixed rod 702 will rotate with the fixed seat 701, when the fixed rod 702 rotates, the pulley 704 will roll in the slide rail 703, the rolling friction between the pulley 704 and the slide rail 703 is smaller than the sliding friction, so that the rotation of the rotating seat 2 is more smooth. At the same time, the rolling of the pulley 704 in the slide rail 703 can limit the shaking of the rotating seat 2 in the horizontal direction, and provide stable support for the rotating seat 2, so that the rotating seat 2 can maintain a stable posture when adjusting the direction, and will not produce large deviation or shaking due to the action of wind force, thereby ensuring the stability of the cabin 3 installed at the top of the rotating seat 2 during rotation.

[0039] The damping mechanism 8 is arranged below the supporting mechanism 7, the damping mechanism 8 comprises an annular disc 801 sleeved on the outer wall of the rotating seat 2, a sealing plate A 802 slidingly arranged in the annular disc 801, a piston plate 803 slidingly arranged in the annular disc 801, a connecting rod 804 arranged between the bottom end of the fixed rod 702 and the top end of the sealing plate A 802, a magneto-rheological fluid 805 filled in the inner cavity of the annular disc 801, an installation groove 806 arranged in the annular disc 801, and an excitation coil 807 arranged in the installation groove 806.

[0040] It should be noted that when the wind direction changes, the driving motor 602 drives the rotating seat 2 to rotate, the fixed rod 702 connected with the rotating seat 2 also rotates, the bottom end of the fixed rod 702 is connected with the top end of the sealing plate A 802 through the connecting rod 804, so that the rotation of the fixed rod 702 drives the sealing plate A 802 to slide in the annular disc 801, and the sliding of the sealing plate A 802 drives the piston plate 803 to extrude the magneto-rheological fluid 805 filled in the inner cavity of the annular disc 801, since the surface of the piston plate 803 is provided with a plurality of through holes, the magneto-rheological fluid 805 can flow through the through holes, and the damping force is generated in the flowing process, so that the rotation of the rotating seat 2 is more stable by using the damping force, avoiding the phenomenon that the rotating seat 2 shakes or loses control due to sudden change of wind force or too rapid action of the driving motor 602, at the same time, reducing the damage of vibration and impact to each part of the equipment, which can effectively reduce the failure rate of the equipment.

[0041] The top end of the cabin 3 is provided with a power generation mechanism 9, which comprises a fixed ring 901 mounted at the top end of the cabin 3, a rotating shaft 902 penetrating the inside of the fixed ring 901, a magnetic block 903 sleeved on the outer wall of the rotating shaft 902 located in the inside of the fixed ring 901, and an electromagnetic coil 904 provided in the inside of the fixed ring 901 and matched with the magnetic block 903;

[0042] It should be noted that under the action of wind, the wind cup 905 drives the rotating shaft 902 to rotate, and the magnetic block 903 sleeved on the outer wall of the rotating shaft 902 rotates synchronously with the rotating shaft 902. Since the inside of the fixed ring 901 is provided with the electromagnetic coil 904 matched with the magnetic block 903, the rotation of the magnetic block 903 will cut the magnetic induction lines of the electromagnetic coil 904. According to the principle of electromagnetic induction, an induced electromotive force is generated, and then electric energy is generated. The electromagnetic coil 904 and the excitation coil 807 are electrically connected through the wire 906, and the current generated by the electromagnetic coil 904 is transmitted to the excitation coil 807 to supply power. When the wind force changes, the rotating speed of the rotating shaft 902 driven by the wind cup 905 changes, so that the generated electric energy also changes accordingly. If the wind force increases, the electric energy generated by the electromagnetic coil 904 increases, and the electric energy transmitted to the excitation coil 807 also increases, so that the excitation coil 807 generates a stronger magnetic field, which enhances the damping force of the magneto-rheological fluid 805, better inhibits the violent vibration of the rotating seat 2 caused by strong wind, and ensures the stability and precision of the steering process. Conversely, if the wind force decreases, the electric energy generated by the electromagnetic coil 904 decreases, the magnetic field strength of the excitation coil 807 decreases, the viscosity of the magneto-rheological fluid 805 decreases, and the damping effect decreases, so that the rotation of the rotating seat 2 is more flexible and smooth, avoiding the influence of excessive damping on the normal rotation of the rotating seat 2, so as to realize the self-adaptive adjustment of the damping force and the wind force condition, ensure the flexible response of the equipment to the change of wind direction, expand the application range of the equipment, and improve the environmental adaptability and reliability of the wind power generation equipment.

[0043] The outer wall of the rotating seat 2 is sleeved with a protective cover 10, and the inside of the protective cover 10 is provided with a lubricating mechanism 11.

[0044] From the above, through the cooperation of the supporting mechanism 7 and the damping mechanism 8, the magneto-rheological fluid 805 is used to damp and buffer the fixed rod 702, the shaking and vibration of the steering mechanism 6 in the steering process are inhibited, and the impact resistance of the equipment is improved. Through the closed loop feedback formed by the power generation mechanism 9 and the damping mechanism 8, the damping force is automatically adjusted according to the wind force, and the stability in strong wind and the flexibility in light wind are considered. Through the linkage of the lubricating mechanism 11 and the steering mechanism 6, and combined with the waste heat utilization in the damping mechanism 8, it is ensured that the lubricating mechanism 11 works effectively under different working conditions, reduces the maintenance cost, and prolongs the service life of the equipment.

[0045] Referring to Figures 1 to 2 As shown in the figure, the output end of the cabin 3 is provided with a transmission shaft 4, and the outer wall of the transmission shaft 4 is provided with a plurality of blades 5.

[0046] Referring to Figure 3 As shown in the figure, the direction adjusting mechanism 6 comprises a mounting base 601 welded on the outer wall of the rotating base 2, a driving motor 602 mounted on the top end of the mounting base 601, a gear 603 mounted on the output end of the driving motor 602, a gear ring 604 sleeved on the top end outer wall of the tower 1 and engaged with the gear 603, a wind direction sensor 605 mounted on the top end of the cabin 3, and a cam 606 rotating at the bottom end of the driving motor 602.

[0047] It should be noted that when the wind direction changes, the wind direction is sensed by the wind direction sensor 605, the deviation between the wind direction and the direction of the blade 5 is determined, and then the rotation of the driving motor 602 is controlled, so that the output end of the driving motor 602 drives the gear 603 to rotate. Since the gear 603 is in engagement with the gear ring 604 sleeved on the top end outer wall of the tower 1, the rotation of the gear 603 will make it move along the surface of the gear ring 604. Since the gear 603 is connected to the rotating base 2, the rotating base 2 will rotate synchronously around the tower 1 during the movement of the gear 603. The rotation of the rotating base 2 further drives the cabin 3 mounted on the top end thereof, as well as the transmission shaft 4 and the blade 5 mounted on the output end of the cabin 3, to rotate together until the blade 5 is adjusted to the best position facing the wind, realizing rapid response and accurate adjustment to the change of wind direction, thereby improving the efficiency of wind power generation and increasing the power generation capacity.

[0048] Referring to Figures 4 to 5 As shown in the figure, the piston plate 803 is provided with a plurality of through holes on the surface thereof, the number of the piston plate 803 is consistent with the number of the sliding rails 703, and the sliding rails 703 and the piston plate 803 are on the same vertical horizontal line. The top end of the piston plate 803 is fixedly connected to the bottom end of the sealing plate 802.

[0049] Referring to Figures 7 to 8 As shown in the figure, the lubricating mechanism 11 comprises an oil groove 1101 mounted inside the protective cover 10, a sealing plate B1102 sliding at the bottom end of the oil groove 1101, a plurality of oil injection nozzles 1104 communicated with the top end of the oil groove 1101, and a pushing assembly for oil injection arranged between the direction adjusting mechanism 6 and the oil groove 1101.

[0050] Referring to Figures 7 to 8 As shown in the figure, the pushing assembly comprises a sleeve 1105 mounted on the top end of the oil groove 1101, a gas conveying pipe 1106 communicated between the sleeve 1105 and the oil groove 1101, a pressing rod 1107 sliding in the inside of the sleeve 1105, a spring 1108 sleeved on the outer wall of the inside of the sleeve 1105 and located at the pressing rod 1107, and a pressing plate 1109 mounted on one end of the pressing rod 1107.

[0051] Referring to Figures 7 to 8As shown, the inside of the sealing plate B1102 is installed with multiple groups of heat-conducting rods 1103, and the top ends of the multiple groups of heat-conducting rods 1103 extend to the inside of the oil groove 1101. One end of the heat-conducting rod 1103 is fixedly connected to the inner wall of the annular disc 801, and the heat-conducting rod 1103 is made of copper material.

[0052] Referring to Figure 8 As shown, one end of the sleeve 1105 is installed with a one-way air suction valve, and the connection between the gas conveying pipe 1106 and the oil groove 1101 is installed with a one-way air exhaust valve.

[0053] It should be noted that when the steering mechanism 6 is working, the cam 606 at the bottom end of the driving motor 602 will rotate with the rotation of the driving motor 602. During the rotation of the cam 606, the profile of the cam 606 will periodically contact and push the pressing rod 1107. When the cam 606 pushes the pressing rod 1107, the pressing rod 1107 slides in the sleeve 1105 against the elastic force of the spring 1108. At this time, the air in the sleeve 1105 is compressed. Since the one-way air suction valve at one end of the sleeve 1105 is closed, the compressed air can only enter the oil groove 1101 through the gas conveying pipe 1106. The one-way air exhaust valve at the connection between the gas conveying pipe 1106 and the oil groove 1101 is opened. After the compressed air enters the oil groove 1101, it will generate pressure on the lubricating oil in the oil groove 1101, so as to use the compressed air to spray the lubricating oil through the oil nozzle 1104, so that the lubricating oil can be accurately sprayed to the part that needs to be lubricated at the meshing position of the gear 603 and the gear ring 604, forming a lubricating film, thereby reducing the friction between the parts, prolonging the service life of the parts, reducing the overall maintenance cost and downtime of the equipment, and improving the operation efficiency of the equipment. When the cam 606 and the pressing rod 1107 are separated, the elastic force of the spring 1108 will push the pressing rod 1107 to reset, and a negative pressure is formed in the sleeve 1105. At this time, the one-way air suction valve is opened, and the external air enters the sleeve 1105, preparing for the next air compression by the cam 606 pushing the pressing rod 1107.

[0054] In addition, in a low-temperature environment, the viscosity of the lubricating oil will increase due to the decrease in temperature, and the flowability will decrease significantly, making it difficult to normally spray and form an effective lubricating film. At this time, when the damping mechanism 8 in the annular disc 801 works, the magnetorheological fluid 805 generates heat under the extrusion of the piston plate 803 and the action of the magnetic field. These heat is conducted to the heat-conducting rod 1103 through the annular disc 801, so that the heat-conducting rod 1103 can quickly transfer the heat of the annular disc 801 to the lubricating oil in the oil groove 1101. After the lubricating oil absorbs the heat, the temperature gradually rises, the viscosity decreases, and the flowability improves, thereby ensuring that the lubricating oil can be normally sprayed and form a complete and uniform lubricating film on the surface of the rotating part, and ensuring the normal operation of the equipment.

[0055] Referring to Figure 4 and Figure 6As shown, the top end of the rotating shaft 902 is installed with a wind cup 905, and the excitation coil 807 is electrically connected with the electromagnetic coil 904 through a wire 906.

[0056] Referring to Figure 3 As shown, the driving motor 602 is a reversible motor, and the driving motor 602 is signal connected with the wind direction sensor 605.

[0057] Working principle: when the wind direction changes, the wind direction sensor 605 senses the direction of the wind, judges the deviation between the direction of the wind and the direction of the blade 5, and then controls the rotation of the driving motor 602, so that the output end of the driving motor 602 drives the gear 603 to rotate, because the gear 603 is in meshing state with the gear ring 604 sleeved on the outer wall of the top end of the tower 1, the rotation of the gear 603 will make it do circular motion along the surface of the gear ring 604. The gear 603 is connected with the rotating seat 2, so in the process of the movement of the gear 603, it will drive the rotating seat 2 to rotate synchronously around the tower 1, and the rotation of the rotating seat 2 will further drive the nacelle 3 installed on the top end of the rotating seat 2 and the transmission shaft 4 and the blade 5 installed on the output end of the nacelle 3 to rotate together, until the blade 5 is adjusted to the best position of facing the wind, realizing the rapid response and accurate adjustment to the change of the wind direction, thereby improving the efficiency of wind power generation and increasing the power generation capacity;

[0058] When the wind direction changes, the wind direction sensor 605 senses the change of the wind direction, and controls the driving motor 602 to start, and the driving motor 602 drives the rotating seat 2 to rotate around the tower 1 through the meshing transmission of the gear 603 and the gear ring 604, in the process, the fixed seat 701 closely connected with the rotating seat 2 also rotates, because the fixed rod 702 is welded on the outer wall of the fixed seat 701, so the fixed rod 702 will rotate with the fixed seat 701, when the fixed rod 702 rotates, the pulley 704 will roll in the inner part of the slide rail 703, the rolling friction between the pulley 704 and the slide rail 703 is smaller than the sliding friction, so that the rotation of the rotating seat 2 is more smooth. At the same time, the rolling of the pulley 704 in the slide rail 703 can limit the shaking of the rotating seat 2 in the horizontal direction, and provide stable support for the rotating seat 2, so that the rotating seat 2 can maintain a stable posture when adjusting the direction, and will not produce large deviation or shaking due to the action of the wind force, thereby ensuring the stability of the nacelle 3 installed on the top end of the rotating seat 2 during the rotation process;

[0059] When the driving motor 602 drives the rotating seat 2 to rotate, the fixed rod 702 connected with the rotating seat 2 will also rotate, and the bottom end of the fixed rod 702 is connected with the top end of the sealing plate A 802 through the connecting rod 804, so that the rotation of the fixed rod 702 drives the sealing plate A 802 to slide inside the annular disc 801, so that the sliding of the sealing plate A 802 drives the piston plate 803 to extrude the magnetorheological fluid 805 filled in the inner cavity of the annular disc 801. Since the surface of the piston plate 803 is provided with a plurality of through holes, the magnetorheological fluid 805 can flow through the through holes and generate a damping force in the flowing process, so that the rotation of the rotating seat 2 is more stable by using the damping force, avoiding the phenomenon that the rotating seat 2 shakes violently or loses control due to sudden change of wind force or too rapid action of the driving motor 602, and reducing the damage of vibration and impact to each part of the equipment, which can effectively reduce the failure rate of the equipment;

[0060] In addition, under the action of wind, the wind cup 905 drives the rotating shaft 902 to rotate, and the magnetic block 903 sleeved on the outer wall of the rotating shaft 902 rotates synchronously with the rotating shaft 902. Since the fixed ring 901 is provided with the electromagnetic coil 904 matched with the magnetic block 903 inside, the rotation of the magnetic block 903 will cut the magnetic induction line of the electromagnetic coil 904, and an induced electromotive force will be generated according to the principle of electromagnetic induction, thereby generating electric energy. The electromagnetic coil 904 and the excitation coil 807 are electrically connected through the wire 906, and the current generated by the electromagnetic coil 904 is transmitted to the excitation coil 807 to supply power. When the wind force changes, the rotating speed of the rotating shaft 902 driven by the wind cup 905 changes, so that the generated electric energy also changes accordingly. If the wind force increases, the electric energy generated by the electromagnetic coil 904 increases, and the electric energy transmitted to the excitation coil 807 also increases, so that the excitation coil 807 generates a stronger magnetic field, which enhances the damping force of the magnetorheological fluid 805 and better suppresses the violent vibration of the rotating seat 2 caused by strong wind, ensuring smooth and accurate steering process. On the contrary, if the wind force decreases, the electric energy generated by the electromagnetic coil 904 decreases, the magnetic field strength of the excitation coil 807 decreases, the viscosity of the magnetorheological fluid 805 decreases, and the damping effect decreases, so that the rotation of the rotating seat 2 is more flexible and smooth, avoiding the influence of excessive damping on the normal rotation of the rotating seat 2, thereby realizing the self-adaptive adjustment of the damping force and the wind force working condition, ensuring that the equipment can flexibly respond to the change of wind direction, expanding the application range of the equipment, and improving the environmental adaptability and reliability of the wind power generation equipment;

[0061] When the steering mechanism 6 works, the cam 606 at the bottom end of the driving motor 602 rotates with the driving motor 602, and the profile of the cam 606 periodically contacts and pushes the pressure rod 1107 during rotation. When the cam 606 pushes the pressure rod 1107, the pressure rod 1107 slides in the sleeve 1105 against the elastic force of the spring 1108, and the air in the sleeve 1105 is compressed. Since the one-way air suction valve at one end of the sleeve 1105 is closed, the compressed air can only enter the oil tank 1101 through the air pipe 1106. The one-way air exhaust valve at the connection between the air pipe 1106 and the oil tank 1101 is open, and the compressed air enters the oil tank 1101, generating pressure on the lubricating oil in the oil tank 1101, so that the lubricating oil is sprayed through the oil nozzle 1104, enabling the lubricating oil to be accurately sprayed to the parts that need to be lubricated at the meshing position of the gear 603 and the gear ring 604, forming a lubricating film, thereby reducing the friction between the parts, prolonging the service life of the parts, reducing the overall maintenance cost and downtime of the equipment, and improving the operation efficiency of the equipment. When the cam 606 and the pressure rod 1107 are disengaged, the spring 1108 pushes the pressure rod 1107 back to its original position, and a negative pressure is formed in the sleeve 1105. At this time, the one-way air suction valve is open, and external air enters the sleeve 1105, preparing for the next time the cam 606 pushes the pressure rod 1107 to compress air;

[0062] In addition, in a low-temperature environment, the viscosity of the lubricating oil increases and the flowability decreases significantly due to the decrease in temperature, making it difficult to spray normally and form an effective lubricating film. At this time, when the damping mechanism 8 in the annular disc 801 works, the magneto-rheological fluid 805 generates heat under the extrusion of the piston plate 803 and the action of the magnetic field. These heat is conducted to the heat conduction rod 1103 through the annular disc 801, so that the heat conduction rod 1103 can quickly transfer the heat of the annular disc 801 to the lubricating oil in the oil tank 1101. After absorbing the heat, the temperature of the lubricating oil gradually rises, its viscosity decreases, and the flowability improves, thereby ensuring that the lubricating oil can be normally sprayed and form a complete and uniform lubricating film on the surface of the rotating parts, ensuring the normal operation of the equipment.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A stable directional control unit for wind power generation, comprising a tower (1), characterized in that: The top of the tower (1) has a rotating seat (2), the top of the rotating seat (2) is equipped with a cabin (3), and the surface of the rotating seat (2) is provided with a steering mechanism (6). A support mechanism (7) is provided between the tower (1) and the rotating seat (2). The support mechanism (7) includes a fixed seat (701) sleeved on the outer wall of the rotating seat (2). A fixed rod (702) is welded to the outer wall of the fixed seat (701). A slide rail (703) is sleeved on the outer wall of the tower (1). A pulley (704) that slides inside the slide rail (703) is installed at one end of the fixed rod (702). A damping mechanism (8) is provided below the support mechanism (7). The damping mechanism (8) includes an annular disk (801) sleeved on the outer wall of the rotating seat (2). A sealing plate A (802) slides inside the annular disk (801). A piston plate (803) slides inside the annular disk (801). A connecting rod (804) is provided between the bottom end of the fixing rod (702) and the top end of the sealing plate A (802). The inner cavity of the annular disk (801) is filled with magnetorheological fluid (805). An installation groove (806) is opened inside the annular disk (801). An excitation coil (807) is provided inside the installation groove (806). The top of the cabin (3) is provided with a power generation mechanism (9). The power generation mechanism (9) includes a fixed ring (901) installed at the top of the cabin (3). A rotating shaft (902) is rotatably inserted inside the fixed ring (901). A magnetic block (903) is sleeved on the outer wall of the rotating shaft (902) inside the fixed ring (901). An electromagnetic coil (904) that cooperates with the magnetic block (903) is provided inside the fixed ring (901). The outer wall of the rotating seat (2) is fitted with a protective cover (10), and the inside of the protective cover (10) is provided with a lubrication mechanism (11).

2. The stable directional control unit for wind power generation according to claim 1, characterized in that: The output end of the cabin (3) is equipped with a drive shaft (4), and the outer wall of the drive shaft (4) is equipped with multiple sets of blades (5).

3. A stable directional control unit for wind power generation according to claim 1, characterized in that: The steering mechanism (6) includes a mounting base (601) welded to the outer wall of the rotating seat (2). A drive motor (602) is mounted on the top of the mounting base (601). A gear (603) is mounted on the output end of the drive motor (602). A gear ring (604) meshes with the gear (603) on the outer wall of the top of the tower (1). A wind direction sensor (605) is mounted on the top of the nacelle (3). A cam (606) rotates at the bottom of the drive motor (602).

4. A stable directional control unit for wind power generation according to claim 1, characterized in that: The piston plate (803) has multiple sets of through holes on its surface. The number of piston plates (803) is the same as the number of slide rails (703). The slide rails (703) and piston plates (803) are on the same vertical horizontal line. The top of the piston plate (803) is fixedly connected to the bottom of the sealing plate A (802).

5. A stable directional control unit for wind power generation according to claim 1, characterized in that: The lubrication mechanism (11) includes an oil tank (1101) installed inside the protective cover (10). A sealing plate B (1102) slides at the bottom of the oil tank (1101). Multiple sets of oil nozzles (1104) are connected to the top of the oil tank (1101). An oil spraying push assembly is provided between the steering mechanism (6) and the oil tank (1101).

6. A stable directional control unit for wind power generation according to claim 5, characterized in that: The pushing assembly includes a sleeve (1105) installed at the top of the oil tank (1101), and an air supply pipe (1106) connecting the sleeve (1105) and the oil tank (1101). A pressure rod (1107) slides inside the sleeve (1105), and a spring (1108) is sleeved on the outer wall of the pressure rod (1107) inside the sleeve (1105). A pressure plate (1109) is installed at one end of the pressure rod (1107).

7. A stable directional control unit for wind power generation according to claim 5, characterized in that: Multiple sets of heat-conducting rods (1103) are installed through the interior of the sealing plate B (1102), and the top ends of the multiple sets of heat-conducting rods (1103) extend into the interior of the oil tank (1101). One end of the multiple sets of heat-conducting rods (1103) is fixedly connected to the inner wall of the annular disk (801). The heat-conducting rods (1103) are made of copper.

8. A stable directional control unit for wind power generation according to claim 6, characterized in that: One end of the sleeve (1105) is equipped with a one-way suction valve, and the connection between the air supply pipe (1106) and the oil tank (1101) is equipped with a one-way exhaust valve.

9. A stable directional control unit for wind power generation according to claim 1, characterized in that: A wind cup (905) is installed at the top of the rotating shaft (902), and a wire (906) is electrically connected between the excitation coil (807) and the electromagnetic coil (904).

10. A stable directional control unit for wind power generation according to claim 3, characterized in that: The drive motor (602) is a forward and reverse motor, and the drive motor (602) is connected to the wind direction sensor (605) for signal transmission.

Images