Adjustable self-balancing wind torque fan tower system and wind turbine

Abstract

The application belongs to the field of wind power generation, and particularly relates to a wind turbine tower system and a wind driven generator with adjustable self-balancing wind resistance torque. The wind turbine tower system comprises a tower column arranged on a tower column foundation and a horizontal axis wind turbine arranged at the top end of the tower column. The horizontal axis wind turbine comprises a horizontal axis, a first blade layer and a second blade layer coaxially arranged at the windward end of the horizontal axis. The second blade layer is used for receiving residual wind passing through the first blade layer. A wind direction sensing module is arranged on the tower column and used for obtaining wind measurement data. The wind turbine tower system is not only beneficial to improving the wind resistance of the tower column, improving the efficient use of wind energy, improving the power of the wind turbine and improving the power generation capacity, but also reduces the requirements for the indicators such as the large size and high strength of the wind tower, thereby reducing the production cost of the tower column. From the aspects of input and output, the economic benefit of the wind power system can be greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of wind power generation, specifically relating to an adjustable self-balancing wind-resistant tower system and a wind turbine generator. Background Technology

[0002] Currently, the efficiency and power of new energy sources are generally low (such as photovoltaic power generation and wind power generation). If the efficiency of new energy sources cannot be improved by leaps and bounds, the task of replacing fossil fuels with new energy sources will be difficult to achieve.

[0003] Wind power is a renewable and clean energy source with a long history and relatively mature technology. However, wind power efficiency has not improved significantly over the past century. This indicates that it will be difficult to significantly improve wind power efficiency by following conventional innovation approaches. A major transformation in wind power technology is necessary. Currently, the overall efficiency of a wind power system is determined by three factors: wind turbine efficiency (wind energy utilization efficiency), mechanical power transmission efficiency, and generator efficiency. The wind turbine efficiency is less than 30%, resulting in a low overall efficiency of the wind power system. Therefore, it is necessary to improve the efficiency of wind turbines in utilizing wind energy. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a wind turbine tower system and a wind turbine generator with adjustable self-balancing wind torque resistance, in order to solve the problem that the efficiency of existing wind turbines is less than 30%, resulting in a low overall efficiency of the wind power system, and therefore it is necessary to improve the efficiency of wind turbines in utilizing wind energy.

[0005] One aspect of the present invention provides an adjustable, self-balancing wind-torque-resistant wind turbine tower system comprising:

[0006] Tower pillars are erected on the foundation of the tower pillars;

[0007] A horizontal axis fan is installed at the top of the tower column; the horizontal axis fan includes a horizontal axis, a first blade layer, and a second blade layer, the first blade layer and the second blade layer are coaxially arranged at the windward end of the horizontal axis, and the second blade layer is used to receive the residual air that has passed through the first blade layer;

[0008] A wind direction sensing module is installed on the tower column to acquire wind measurement data.

[0009] In this solution, the wind direction sensing module includes a wind vane and an anemometer, which are used to obtain the direction and speed of the incoming wind as wind measurement data, and adjust the direction of the horizontal axis fan according to the wind measurement data so that the windward side of the horizontal axis fan faces the direction of the incoming wind.

[0010] Due to the higher incoming wind speed, and following the principle of wind speed ratio optimization, the first layer of wide and short fan blades rotates at a correspondingly higher speed. As the residual wind energy passing through the first layer of fan blades decreases, the wind speed drops, so the rotational speed of the second layer of blades is proportionally slower than that of the first layer. However, the wind speed within the annular area where the second layer of fan blades is longer than the first layer remains largely unaffected by the lower layer of fan blades, maintaining essentially the original incoming wind speed. This results in the second layer of fan blades facing two types of incoming wind speeds: the slower residual wind speed on the inner annular area and the faster original, undisturbed wind speed on the outer annular area.

[0011] This progressively increasing speed structure is highly beneficial for improving the conversion efficiency of ultra-long blade wind turbines. This is because the linear velocity on ultra-long blades is directly proportional to the outer radius of the blade segment. The inner ring blades have a slower linear velocity, corresponding to the turbulent, low-speed residual wind within the inner ring, while the outer ring blades have a higher linear velocity, corresponding to the undisturbed, high-speed original wind within the outer ring. According to the speed ratio optimization principle for wind turbine efficiency, this combination of slower inner and faster outer wind is highly conducive to achieving the optimal operating conditions for ultra-long blade wind turbines. By utilizing the residual wind energy behind the blades, wind energy utilization is improved, thereby increasing the power generation efficiency of the wind turbine.

[0012] In one preferred embodiment of the present invention, the rotational speed of the first blade layer is higher than that of the second blade layer, and a rotary differential is provided between the first blade layer and the second blade layer.

[0013] In this design, the blades of the first blade layer are short and the incoming air velocity is high, so the blade rotation speed of the first blade layer is relatively high. Similarly, the blades of the second blade layer are longer, and the central part is the residual air after passing through the short blades of the first blade layer, so the wind speed is lower. The wind speed of the outer ring of the blades of the second blade layer (the annular range larger than the blade length of the first blade layer) is the original wind speed, but because the blade length increases, its tangential velocity also increases. Therefore, the overall design of the inner ring and the outer ring determines that the rotation speed of the blades of the second blade layer is relatively slower. At this time, a differential between the first and second blade layers is needed to adjust the difference in the blade rotation speed between the first and second blade layers.

[0014] The process of using different rotational speeds for the front and rear fan blades not only helps optimize the fan conversion efficiency of each layer of fan blades, but also helps to resolve the contradiction that different radius segments on the same ultra-long blade cannot simultaneously meet the fan conversion efficiency requirements of each radius segment due to different rotational linear velocities.

[0015] In one preferred embodiment of the present invention, the blade length of the first blade layer is shorter than the blade length of the second blade layer.

[0016] In this design, due to the reduced residual wind energy and lower wind speed through the first layer of fan blades, the rotational speed of the second layer of blades is correspondingly slower than that of the first layer. However, the wind speed within the annular surface where the second layer of fan blades is longer than the first layer remains essentially unchanged due to minimal interference from the bottom layer of fan blades. This results in the second layer of fan blades facing two types of incoming wind speeds: the slower residual wind speed on the inner annular surface and the faster original, undisturbed wind speed on the outer annular surface.

[0017] This speed-increasing structure is very beneficial for improving the conversion efficiency of ultra-long blade wind turbines. This is because the linear velocity on ultra-long blades is proportional to the outer radius of the blade segment. The inner ring blades have a slower linear velocity, corresponding to the low-speed residual wind that is disturbed in the inner ring, while the outer ring blades have a higher linear velocity, corresponding to the original high-speed wind that is not disturbed in the outer ring. According to the speed ratio optimization principle of wind turbine efficiency, this situation of slow inner and fast outer wind is very conducive to achieving the optimal operating condition of ultra-long blade wind turbines.

[0018] In one preferred embodiment of the present invention, the horizontal axis is further provided with a long axis telescopic assembly, the horizontal axis being telescopically mounted on the tower column via the long axis telescopic assembly, the long axis telescopic assembly being used to adjust the distance between the first blade layer, the second blade layer and the tower column.

[0019] In this design, when the wind speed is low, the extra-long horizontal shaft and telescopic support rod retract and shorten, adjusting the extension distance of the multiple fan blades. This reduces the forward tilting moment formed by the wind turbine's own weight and the retracted horizontal shaft, thus decreasing the forward bending torque of the wind tower column. When the wind speed becomes high, the extra-long horizontal shaft and telescopic support rod begin to extend, causing the wind turbine's own weight and the extended horizontal shaft to form a larger forward tilting balancing moment.

[0020] At this time, when a large wind speed impacts the wind turbine system, the resulting backward wind resistance pull and wind resistance thrust, together with the tower height, create a huge backward-leaning overturning torque.

[0021] In one preferred embodiment of the present invention, at least two wind direction sensing modules may be provided, wherein one wind direction sensing module is provided at the windward end of the horizontal axis, and the other wind direction sensing module is provided on the tower column, for obtaining wind measurement data at different height positions.

[0022] The wind direction sensing module includes at least a wind vane and an anemometer, and the wind direction sensing module is electrically connected to the controller of the wind turbine tower system through a communication module.

[0023] In one preferred embodiment of the present invention, the system further includes:

[0024] A telescopic support rod is provided between the horizontal axis and the tower column:

[0025] The first support ring is disposed on the horizontal axis;

[0026] The second support ring is disposed on the tower column;

[0027] The retractable support rod is disposed between the first support ring and the second support ring.

[0028] In this design, a multi-layered wind turbine consisting of a heavy first blade layer and a second blade layer is suspended at the front end of the long horizontal axis, generating a large reverse torque against the wind. In order to enhance the stability of the horizontal axis and the top of the tower, telescopic diagonal support rods are installed on the upper part of the horizontal axis and the tower column.

[0029] In one preferred embodiment of the present invention, the system further includes a horizontal axis support rotating disk disposed at the top of the tower column, the horizontal axis fan being disposed on the horizontal axis support rotating disk, and the horizontal axis support rotating disk being used to rotate and adjust the windward side of the horizontal axis fan;

[0030] The controller of the wind turbine tower system is electrically connected to the horizontal axis support rotating disk, and the windward side of the horizontal axis wind turbine faces the direction of the incoming wind.

[0031] In this scheme, the horizontal axis wind turbine automatically rotates to face the incoming wind according to the measured wind direction. The operating mechanism of the horizontal axis wind turbine and the incoming wind is almost exactly the same. At this time, the thrust of the wind turbine blades on the downwind side is greater than the drag of the blades on the upwind side (this is determined by factors such as the different shapes and angles of attack of the blades due to different phase angles of rotation). The horizontal wind turbine rotates in the set direction, driving the connected gearbox and generator to work. The invention of the self-balancing wind turbine tower structure not only improves the wind resistance of the tower, facilitates the efficient utilization of wind energy, and increases the power of the wind turbine, but also reduces the requirements for the large size and high-strength materials of the wind tower, thereby reducing the production cost of the tower. From both the input and output perspectives, it can greatly improve the economic benefits of the wind power system.

[0032] In one preferred embodiment of the present invention, the forward-facing automatic balancing torque of the wind turbine is exactly opposite to the backward-facing wind resistance torque. The self-weight balancing torque offsets part of the wind resistance torque, reducing the wind resistance thrust torque at the base of the tower column and greatly improving the wind tower column's ability to resist strong winds.

[0033] Wind-resistant balance torque M 抗 The calculation is as follows:

[0034] M 抗 =W 风机 ×L 轴

[0035] Among them, W 风机 For the self-weight of the wind turbine system, L轴 The equivalent torque length of the horizontal axis;

[0036] Maximum wind resistance F of wind turbine tower system structure M风 The relationship is as follows:

[0037] F M风 ×HW 风机 ×L 轴 ≤M 塔根

[0038] F M风 ≤(M 塔根 +W 风机 ×L 轴 ) / H

[0039] Among them, F M风 The maximum wind resistance at the top of the tower, H is the height of the wind tower, and M is the maximum wind resistance at the top of the tower. 塔根 The maximum rated breaking torque value at the tower root, length L 轴 This is the horizontal axis of the fan.

[0040] Based on the above formula, this scheme provides four ways to improve the wind-induced collapse resistance of wind turbine towers:

[0041] ① Reducing the height H of the wind turbine can improve the short and wide high-speed blades, thereby reducing the height of the turbine tip;

[0042] ②Increase the fracture resistance M of the tower base body 塔根 This can be achieved by increasing the tower column diameter, tower thickness, tower material strength, and tower lining trusses;

[0043] ③ Increase the width, length, number, and number of layers of the fan blades to increase the fan's self-balancing ability by increasing its weight;

[0044] ④ Increase the length L of the horizontal shaft of the fan 轴 This increases the self-balancing torque.

[0045] In one preferred embodiment of the present invention, the system further includes a pod, which is disposed at the bottom of the tower column. The pod contains a gearbox and a generator. The gearbox is connected to the generator. The horizontal shaft is connected to the gearbox via a transmission structure.

[0046] The transmission structure that enables the rotation of the horizontal axis to be converted into rotation of the vertical axis can be a worm gear transmission or a bevel gear transmission.

[0047] In this scheme, the pod and turbine are located at the top of the tower in traditional wind power technology, which is not conducive to the stability and reliability of the wind tower column during strong winds. In this scheme, by moving the pod down to the ground, the wind turbine at the top of the tower generates a forward tilting torque due to its eccentric weight. This torque is exactly opposite to the wind resistance torque that pushes the wind tower column backward due to the wind resistance. The forward tilting torque of the wind turbine's own weight precisely offsets the torque that pushes the wind turbine column backward due to the strong wind, thereby improving the wind tower's resistance to collapse in strong winds. Within a certain range of strong winds, the higher the wind speed, the stronger the stability of the wind tower column, and the more stable and reliable the structural system becomes.

[0048] This application example uses gear or worm gear transmission to convert the rotation of the horizontal shaft into the rotation of the vertical shaft, thereby outputting shaft power to the gearbox and generator inside the suspended pod.

[0049] One preferred embodiment of the present invention also discloses a wind turbine generator, including an adjustable self-balancing wind-resistant torque wind turbine tower system as described in any of the above embodiments. The horizontal axis wind turbine in this embodiment is different from conventional horizontal axis wind turbines and vertical axis wind turbines. The extra-long horizontal axis can be used to adjust the spacing between the first blade layer, the second blade layer and the tower, which not only increases the wind absorption and power generation of the entire system, but also increases the self-balancing torque of the tower against wind. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram showing the structure of the wind turbine tower system of the present invention;

[0052] Figure 2 This is a schematic diagram showing the structure of a wind turbine tower system from another perspective of the present invention. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0054] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0055] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0056] Please refer to Figure 1 One embodiment of the present invention provides an adjustable self-balancing wind-torque-resistant wind turbine tower system 100, comprising:

[0057] Tower column 110 is set on the tower column foundation;

[0058] A horizontal axis fan 120 is installed at the top of the tower column 110; the horizontal axis fan 120 includes a horizontal axis 121, a first blade layer 122, and a second blade layer 123. The first blade layer 122 and the second blade layer 123 are coaxially arranged at the windward end of the horizontal axis 121, and the second blade layer 123 is used to receive the residual air passing through the first blade layer 122.

[0059] A wind direction sensing module 130 is installed on the tower column 110 to acquire wind measurement data.

[0060] In this embodiment, the wind direction sensing module 130 includes a wind vane and an anemometer, used to acquire the wind direction and wind speed as wind measurement data, and adjust the direction of the horizontal axis fan 120 according to the wind measurement data so that the windward side of the horizontal axis fan 120 faces the wind direction.

[0061] Due to the high incoming wind speed, and following the principle of wind speed ratio optimization, the first layer of wide and short fan blades rotates at a correspondingly higher speed. The remaining wind energy passing through the blades of the first blade layer 122 decreases, resulting in a lower wind speed. Therefore, the rotational speed of the second layer of blades is proportionally slower than that of the first layer. However, the wind speed within the annular surface where the second layer of fan blades is longer than the first layer 122 remains largely unaffected by the first layer's blades, maintaining essentially the original incoming wind speed. This results in the second layer of fan blades facing two types of incoming wind speeds: a slower, disturbed residual wind on the inner annular surface and a faster, undisturbed original wind on the outer annular surface.

[0062] This progressively increasing speed structure is highly beneficial for improving the conversion efficiency of ultra-long blade wind turbines. This is because the linear velocity on ultra-long blades is directly proportional to the outer radius of the blade segment. The inner ring blades have a slower linear velocity, corresponding to the turbulent, low-speed residual wind within the inner ring, while the outer ring blades have a higher linear velocity, corresponding to the undisturbed, high-speed original wind within the outer ring. According to the speed ratio optimization principle for wind turbine efficiency, this combination of slower inner and faster outer wind is highly conducive to achieving the optimal operating conditions for ultra-long blade wind turbines. By utilizing the residual wind energy behind the blades, wind energy utilization is improved, thereby increasing the power generation efficiency of the wind turbine.

[0063] In one preferred embodiment of the present invention, the rotational speed of the first blade layer 122 is higher than that of the second blade layer 123, and a rotary differential 140 is provided between the first blade layer 122 and the second blade layer 123.

[0064] In this embodiment, the blades of the first blade layer 122 are short and the incoming air velocity is high, so the rotational speed of the blades of the first blade layer 122 is relatively high. Similarly, the blades of the second blade layer 123 are longer, and the central part is the residual wind after passing through the short blades of the first blade layer 122, so the wind velocity is relatively low. The wind velocity of the outer ring of the blades of the second blade layer 123 (the annular range that is larger than the blade length of the first blade layer 122) is the original wind velocity, but because the blade length increases, its tangential velocity also increases. Therefore, the overall design of the inner ring and the outer ring determines that the rotational speed of the blades of the second blade layer 123 is relatively slower. At this time, the differential 140 between the first blade layer 122 and the second blade layer 123 is needed to adjust the difference in the rotational speed of the blades of the first blade layer 122 and the second blade layer 123.

[0065] The process of using different rotational speeds for the front and rear fan blades not only helps optimize the fan conversion efficiency of each layer of fan blades, but also helps to resolve the contradiction that different radius segments on the same ultra-long blade cannot simultaneously meet the fan conversion efficiency requirements of each radius segment due to different rotational linear velocities.

[0066] In one preferred embodiment of the present invention, the blade length of the first blade layer 122 is shorter than the blade length of the second blade layer 123.

[0067] In this embodiment, because the residual wind energy passing through the blades of the first blade layer 122 is reduced, the wind speed decreases, so the rotation speed of the second layer blades is correspondingly slower than that of the first layer blades by a certain proportion. However, the wind speed within the annular surface where the second layer of fan blades is longer than the first layer of fan blades 122 is basically unaffected by the bottom layer of fan blades, and its wind speed remains basically the original incoming wind speed. This results in the second layer of fan blades facing two types of incoming wind speeds: the residual wind speed on the inner annular surface is slower due to interference, while the original, undisturbed wind speed on the outer annular surface is faster.

[0068] This speed-increasing structure is very beneficial for improving the conversion efficiency of ultra-long blade wind turbines. This is because the linear velocity on ultra-long blades is proportional to the outer radius of the blade segment. The inner ring blades have a slower linear velocity, corresponding to the low-speed residual wind that is disturbed in the inner ring, while the outer ring blades have a higher linear velocity, corresponding to the original high-speed wind that is not disturbed in the outer ring. According to the speed ratio optimization principle of wind turbine efficiency, this situation of slow inner and fast outer wind is very conducive to achieving the optimal operating condition of ultra-long blade wind turbines.

[0069] In one preferred embodiment of the present invention, the horizontal axis 121 is further provided with a long axis telescopic component 124. The horizontal axis 121 is telescopically mounted on the tower column 110 via the long axis telescopic component 124. The long axis telescopic component 124 is used to adjust the distance between the first blade layer 122, the second blade layer 123 and the tower column 110.

[0070] In this embodiment, when the wind speed is low, the extra-long horizontal shaft 121 and the telescopic support rod 150 retract and shorten, adjusting the extension distance of the multiple fan blades. This reduces the forward tilting moment formed by the fan's own weight and the retracted horizontal shaft 121, thus decreasing the forward bending torque of the wind tower column 110. When the wind speed becomes high, the extra-long horizontal shaft 121 and the telescopic support rod 150 begin to extend, resulting in a larger forward tilting balancing moment formed by the fan's own weight and the extended horizontal shaft 121.

[0071] At this time, when a large wind speed impacts the wind turbine system, the resulting backward wind resistance pull and wind resistance thrust, together with the height of the tower column 110, form a huge backward-leaning overturning torque.

[0072] In one preferred embodiment of the present invention, at least two wind direction sensing modules 130 may be provided, wherein one wind direction sensing module 130 is provided at the windward end of the horizontal axis 121, and the other wind direction sensing module 130 is provided on the tower column 110, for obtaining wind measurement data at different height positions.

[0073] The wind direction sensing module 130 includes at least a wind vane and an anemometer, and the wind direction sensing module 130 is electrically connected to the controller of the wind turbine tower system 100 through a communication module.

[0074] Please refer to Figure 1 In one preferred embodiment of the present invention, the system further includes:

[0075] The telescopic support rod 150 is disposed between the horizontal axis 121 and the tower column 110.

[0076] The first support ring 151 is disposed on the horizontal axis 121;

[0077] The second support ring 152 is disposed on the tower column 110;

[0078] The retractable support rod 150 is disposed between the first support ring 151 and the second support ring 152.

[0079] In this embodiment, a multi-layer wind turbine consisting of a heavy first blade layer 122 and a second blade layer 123 is suspended at the front end of the long horizontal shaft 121, generating a large reverse torque against the wind. In order to enhance the stability of the horizontal shaft 121 and the tower top, a telescopic inclined support rod is provided on the upper part of the horizontal shaft 121 and the tower column 110.

[0080] In one preferred embodiment of the present invention, the system further includes a horizontal axis support rotating disk 111 disposed on the top of the tower column 110, and a horizontal axis fan 120 disposed on the horizontal axis support rotating disk 111. The horizontal axis support rotating disk 111 is used to rotate and adjust the windward side of the horizontal axis fan 120.

[0081] The controller of the wind turbine tower system 100 is electrically connected to the horizontal axis support rotating disk 111, and the windward side of the horizontal axis wind turbine 120 faces the direction of the incoming wind.

[0082] In this embodiment, the horizontal axis fan 120 is automatically turned to face the incoming wind according to the measured wind direction. The working mechanism of the horizontal axis fan 120 and the incoming wind is almost exactly the same. At this time, the thrust of the fan blades on the downwind side is greater than the drag of the blades on the upwind side (this is determined by factors such as the different shapes and angles of attack of the blades due to different rotation phase angles). The horizontal axis fan 120 rotates in the set direction, driving the connected gearbox 161 and generator 162 to work. The invention of the self-balancing wind turbine tower 110 structure not only improves the wind resistance of the tower 110, facilitates the efficient utilization of wind energy, and increases the power of the wind turbine, but also reduces the requirements for the large size and high-strength materials of the wind tower, thereby reducing the production cost of the tower 110. From both the input and output perspectives, it can greatly improve the economic benefits of the wind power system.

[0083] In one preferred embodiment of the present invention, the forward-facing automatic balancing torque of the wind turbine is exactly opposite to the backward-facing wind resistance torque. The self-weight balancing torque offsets part of the wind resistance torque, reducing the wind resistance thrust torque received by the base of the tower column 110 and greatly improving the wind tower column 110's ability to resist strong winds.

[0084] The calculation of the wind resistance balance torque M_resistance is as follows:

[0085] Mresistance = Wfan × Lshaft

[0086] Wherein, W_fan is the self-weight of the fan system, and L_axis is the equivalent torque length of the horizontal axis 121;

[0087] The maximum wind resistance capacity F of the wind turbine tower system 100 structure M The relationship of wind is as follows:

[0088] F M Wind × HW fan × L shaft ≤ M tower root

[0089] F M Wind ≤ (M_tower root + W_fan × L_shaft) / H

[0090] Among them, F M Wind is the maximum wind resistance at the top of the tower column 110, H is the height of the wind tower, M is the maximum rated breaking torque at the tower root, and the length L axis is the horizontal axis 121 of the wind turbine.

[0091] In this embodiment, based on the above formula, the following four methods can be used to improve the wind-induced collapse resistance of wind turbine towers:

[0092] ① Reducing the height H of the wind turbine can improve the short and wide high-speed blades, thereby reducing the height of the turbine tip;

[0093] ②Increase the fracture resistance M of the main body at the base of tower column 110. 塔根 This can be achieved by increasing the diameter of the tower column (110mm), the thickness of the tower tube, the strength of the tower tube material, and the truss lining of the tower tube;

[0094] ③ Increase the width, length, number, and number of layers of the fan blades to increase the fan's self-balancing ability by increasing its weight;

[0095] ④ Increase the length L of the horizontal shaft 121 of the fan. 轴 This increases the self-balancing torque.

[0096] In one preferred embodiment of the present invention, the system further includes a pod 160, which is disposed at the bottom of the tower column 110. A gearbox 161 and a generator 162 are disposed inside the pod 160. The gearbox 161 is connected to the generator 162. The horizontal shaft 121 is connected to the gearbox 161 through a transmission structure 170.

[0097] The transmission structure 170 that enables the horizontal axis 121 to rotate into a vertical axis can be a worm gear transmission or a bevel gear transmission.

[0098] In this embodiment, in conventional wind power technology, both the pod 160 and the wind turbine are located at the top of the tower, which is detrimental to the stability and reliability of the wind tower column 110 during strong winds. In this embodiment, by moving the pod 160 down to the ground, the wind turbine at the top of the tower generates a forward tilting torque due to its eccentric weight. This torque is exactly opposite in direction to the wind resistance torque generated by the wind resistance that pushes the wind tower column 110 backward. The forward tilting torque of the wind turbine's own weight precisely offsets the torque that pushes the wind turbine tower column 110 backward during strong winds, thereby improving the wind tower's resistance to collapse in strong winds. Within a certain range of strong winds, the greater the wind speed, the stronger the stability of the wind tower column 110, and the more stable and reliable the structural system becomes.

[0099] In this application example, gear transmission or worm gear transmission can be used to convert the rotation of the horizontal shaft into the rotation of the vertical shaft, thereby outputting shaft power to the gearbox 161 and generator 162 inside the suspended small pod 160.

[0100] In one preferred embodiment of the present invention, a wind turbine generator 162 is also provided, including a wind turbine tower system 100 with adjustable self-balancing wind torque as described in any of the above embodiments. The horizontal axis wind turbine 120 in this embodiment is different from conventional horizontal axis wind turbines 120 and vertical axis wind turbines. The extra-long horizontal axis can be used to adjust the spacing between the first blade layer 122, the second blade layer 123 and the tower 110, which not only increases the wind absorption and power generation of the entire system, but also increases the wind resistance self-balancing torque of the tower 110.

[0101] One embodiment of the present invention provides an adjustable self-balancing wind-resistant tower system 100, which is installed in a location.

[0102] The wind direction sensor module 130 is used to measure the direction and speed of the incoming wind. The horizontal axis supports the rotating disk 111 to adjust its direction so that the windward side of the fan faces the direction of the incoming wind.

[0103] When the wind speed is low, the extra-long horizontal shaft 121 and the telescopic support rod 150 retract and shorten, adjusting the extension distance of the multiple fan blades. This reduces the forward tilting moment formed by the wind turbine's own weight and the retracted horizontal shaft 121, thus decreasing the forward bending torque of the tower column 110. When the wind speed becomes high, the extra-long horizontal shaft 121 and the telescopic support rod 150 begin to extend, resulting in a larger forward tilting balancing moment formed by the wind turbine's own weight and the extended horizontal shaft 121. When a high wind speed impacts the wind turbine system, the resulting backward drag pull and drag thrust, combined with the height of the tower column 110, create a huge backward-tilting overturning torque.

[0104] Since the forward-facing wind turbine automatic balancing torque is exactly opposite to the backward-facing wind resistance torque, the self-weight balancing torque offsets most of the wind resistance torque, reducing the wind resistance thrust torque at the base of the tower column 110, greatly improving the wind tower column 110's ability to resist strong winds, ensuring that the wind tower will not break or collapse, and greatly improving its reliability and safety.

[0105] Because the wind tower system has improved its ability to withstand strong winds, it has changed the old concept of fearing strong winds and stalling to avoid the wind in strong winds, resulting in the waste of huge wind energy. This solution can retain more of the energy of the super-speed wind and convert it into the excess mechanical energy of the wind turbine, which not only improves the efficiency of the wind turbine, but also increases the power generation of the entire wind power system.

[0106] Due to the high incoming wind speed, and following the principle of wind speed ratio optimization, the first layer of wide and short fan blades rotates at a correspondingly higher speed. Furthermore, because the residual wind energy passing through the blades of the first blade layer 122 decreases, the wind speed drops, so the rotational speed of the second layer of blades is proportionally slower than that of the first layer. However, the wind speed within the annular surface where the second layer of fan blades is longer than the first layer 122 remains essentially unchanged due to minimal interference from the bottom layer of fan blades. This results in the second layer of fan blades facing two wind speeds: a slower, disturbed residual wind on the inner annular surface and a faster, undisturbed original wind on the outer annular surface.

[0107] This speed-increasing structure is very beneficial for improving the conversion efficiency of ultra-long blade wind turbines. This is because the linear velocity on ultra-long blades is proportional to the outer radius of the blade segment. The inner ring blades have a slower linear velocity, corresponding to the low-speed residual wind that is disturbed in the inner ring, while the outer ring blades have a higher linear velocity, corresponding to the original high-speed wind that is not disturbed in the outer ring. According to the speed ratio optimization principle of wind turbine efficiency, this situation of slow inner and fast outer wind is very conducive to achieving the optimal operating condition of ultra-long blade wind turbines.

[0108] According to the measured wind direction, the horizontal axis fan 120 automatically rotates to face the incoming wind. The operating mechanism of the horizontal axis fan 120 and the incoming wind is almost identical. At this time, the thrust of the fan blades on the downwind side is greater than the resistance of the blades on the upwind side (this is determined by factors such as the different shapes and angles of attack of the blades due to different rotational phase angles). The horizontal axis fan 120 rotates in the set direction, driving the connected gearbox 161 and generator 162. In this application example, gear transmission or worm gear transmission can be used to convert the rotation of the horizontal axis into the rotation of the vertical axis, thereby outputting shaft power to the gearbox 161 and generator 162 inside the suspended pod 160.

[0109] The invention of the self-balancing wind turbine tower 110 structure not only improves the wind resistance of the tower 110, facilitates the efficient utilization of wind energy, increases wind turbine power, and boosts power generation, but also reduces the requirements for large-size and high-strength materials of the wind tower, thereby reducing the production cost of the tower 110. From both input and output perspectives, it can greatly improve the economic benefits of the wind power system.

[0110] The multi-layer blade fan technology, which utilizes different types of blades in each layer of the fan, achieves the following effects:

[0111] ①: By utilizing the residual wind energy behind the blades, the wind energy utilization rate is improved, thereby increasing the power generation efficiency of the wind turbine;

[0112] ②: The process of using different rotational speeds of the front and rear fan blades is not only beneficial to optimizing the fan conversion efficiency of each layer of fan blades, but also helps to solve the contradiction that the fan conversion efficiency of different radius segments on the same ultra-long blade cannot be satisfied at the same time due to the different rotational linear speeds.

[0113] ③: The multi-layer fan has a larger self-weight, which helps to improve the fan's wind resistance self-balancing torque;

[0114] ④: Due to the balancing torque, the wind tower's resistance to wind resistance is greatly improved, and multiple wind turbines with high wind load, high lift, and excellent speed ratio can be used.

[0115] In traditional wind power systems, both the 160-meter-high silo and the turbine are located at the top of the tower. This is detrimental to the stability and reliability of the tower column 110 during strong winds. To protect the tower from being broken by strong winds, methods such as stalling are used to minimize the wind energy received by the turbine blades, resulting in a significant waste of high-quality wind energy. In this new design, by lowering the 160-meter-high silo to the ground, the turbine at the top of the tower generates a forward tilting torque due to its own weight. This torque is opposite to the wind resistance torque that pushes the tower column 110 backward. The forward tilting torque of the turbine's own weight effectively counteracts the backward tilting torque of the tower column 110 caused by strong winds, improving the tower's resistance to collapse. Within a certain wind range, the higher the wind speed, the stronger the stability of the tower column 110, resulting in a more stable and reliable structural system.

[0116] The utilization rate of super-strong wind energy is high, and the wind power conversion efficiency is high. This self-balancing wind turbine tower system 100 can receive more and stronger winds and efficiently convert them into electrical energy. At the same time, the torque on the wind tower system is reduced, making it more stable and reliable. In addition, the self-balancing wind turbine tower system 100 using this solution can reduce the diameter, wall thickness, and material strength requirements of the tower column 110, thereby reducing the production cost, transportation cost, and installation cost of the tower column 110 and achieving higher economic benefits.

[0117] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An adjustable, self-balancing wind-torque-resistant wind turbine tower system, characterized in that, include: Tower pillars are erected on the foundation of the tower pillars; A horizontal axis fan is installed at the top of the tower column; the horizontal axis fan includes a horizontal axis, a first blade layer, and a second blade layer, the first blade layer and the second blade layer are coaxially arranged at the windward end of the horizontal axis, and the second blade layer is used to receive the residual air that has passed through the first blade layer; A wind direction sensing module is installed on the tower column to acquire wind measurement data; The horizontal axis is also provided with a long axis telescopic assembly, which allows the horizontal axis to be telescopically mounted on the tower column. The long axis telescopic assembly is used to adjust the distance between the first blade layer, the second blade layer and the tower column. A telescopic support rod is provided between the horizontal axis and the tower column; a first support ring is provided on the horizontal axis. A second support ring is disposed on the tower column; the telescopic support rod is disposed between the first support ring and the second support ring; The adjustment of the long-axis telescopic assembly includes: when the wind speed is low, the extra-long horizontal axis and the telescopic support rod are shortened, adjusting the extension distance of the multiple fan blades, so that the forward tilting moment formed by the wind turbine's own weight and the retracted horizontal axis is reduced, thereby reducing the forward bending torque of the wind tower column; or, when the wind speed becomes high, the extra-long horizontal axis and the telescopic support rod are extended, so that the wind turbine's own weight and the extended horizontal axis form a larger forward tilting balance moment.

2. The adjustable self-balancing wind turbine tower system as described in claim 1, characterized in that, The rotational speed of the first blade layer is higher than that of the second blade layer, and a rotary differential is provided between the first blade layer and the second blade layer.

3. The adjustable self-balancing wind turbine tower system as described in claim 2, characterized in that, The blade length of the first blade layer is shorter than the blade length of the second blade layer.

4. The adjustable self-balancing wind turbine tower system as described in claim 1, characterized in that, The wind direction sensing module can be provided in at least two, one of which is located at the windward end of the horizontal axis, and the other is located on the tower column, for obtaining wind measurement data at different height positions. The wind direction sensing module includes at least a wind vane and an anemometer, and the wind direction sensing module is electrically connected to the controller of the wind turbine tower system through a communication module.

5. The adjustable self-balancing wind turbine tower system as described in claim 1, characterized in that, The system also includes a horizontal axis support rotating disk, which is set on the top of the tower column. The horizontal axis fan is set on the horizontal axis support rotating disk, and the horizontal axis support rotating disk is used to rotate and adjust the windward side of the horizontal axis fan. The controller of the wind turbine tower system is electrically connected to the horizontal axis support rotating disk, and the windward side of the horizontal axis wind turbine faces the direction of the incoming wind.

6. The adjustable self-balancing wind turbine tower system as described in claim 5, characterized in that, The forward-facing wind turbine's automatic balancing torque is exactly the opposite of the backward-facing wind resistance torque. The self-weight balancing torque offsets part of the wind resistance torque, reducing the wind resistance thrust torque at the base of the tower column and greatly improving the wind tower column's ability to withstand strong winds. Wind-resistant balance torque The calculation is as follows: in, For the self-weight of the wind turbine system, The equivalent torque length of the horizontal axis; Maximum wind resistance of wind turbine tower system structure The relationship is as follows: in, H represents the maximum wind resistance at the top of the tower, where H is the height of the wind tower. The maximum rated breaking torque value at the tower root, length This is the horizontal axis of the fan.

7. The adjustable self-balancing wind turbine tower system as described in claim 6, characterized in that, The system also includes a pod located at the bottom of the tower column. The pod contains a gearbox and a generator. The gearbox is connected to the generator. The horizontal shaft is connected to the gearbox via a transmission structure. The transmission structure that enables the rotation of the horizontal axis to be converted into rotation of the vertical axis employs a worm gear transmission or a bevel gear transmission.

8. A wind turbine generator, characterized in that, Including the adjustable self-balancing wind torque-resistant wind turbine tower system as described in any one of claims 1-7.

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