Lattice type vertical axis wind power generation tower

Abstract

The invention discloses a lattice type vertical axis wind power generation tower which comprises an iron tower, a plurality of cross arms, a plurality of wind power generation assemblies and a power transmission assembly. Each cross arm is provided with at least one wind power generation assembly, and the wind power generation assemblies are suitable for generating power through wind energy so that the wind power generation assemblies can be arranged at different height positions of the iron tower through the cross arms, and the wind power generation assemblies can generate power through wind resources of different heights. Therefore, electric energy generated by the wind power generation assemblies is transmitted to the collection box or the collection station through the electric power transmission assembly. The lattice type vertical axis wind power generation tower has the advantages of being high in structural stability, high in wind energy conversion efficiency, obvious in economic benefit and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, in particular to a lattice-type vertical axis wind power generation tower. Background Art

[0002] The working principle of the vertical axis power tower is based on the principle of aerodynamics. When the wind blows through the wind rotor, the blades begin to rotate due to the wind force. The rotation of the wind rotor is transmitted to the generator through the transmission system, and the generator converts the mechanical energy into electrical energy. The vertical axis power tower has the advantages of adaptive wind direction characteristics, compact structure, and small footprint, and can generate stable power under various wind direction conditions.

[0003] In the related art, the wind resources available to vertical axis power generation towers are limited, the wind energy capture efficiency is low, and the economic benefits of wind power generation are poor. Summary of the invention

[0004] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0005] 1. The application scenarios of vertical axis wind power towers are limited: Currently, they are mostly used for low-altitude power generation, such as remote areas without power grids, auxiliary power supply and other scenarios with small electricity demand and no access to the power grid system. Therefore, the advantages of vertical axis wind power towers are not fully utilized, which limits their power generation effect.

[0006] 2. Anti-vibration problem: Vertical axis wind turbines may be more prone to vibration problems, affecting long-term stable operation.

[0007] 3. Output power instability: Vertical axis wind turbines perform poorly in dealing with wind instability, with large output power fluctuations and difficulty in connecting to the grid.

[0008] 4. Low wind energy conversion efficiency: Vertical axis wind turbines do not fully utilize the kinetic energy of the wind field within the entire vertical height of the tower.

[0009] 5. The starting wind speed is low but the output power is low: The starting wind speed of the vertical axis wind turbine is low, but the power generation output power is also relatively low.

[0010] 6. Disadvantages of traditional conical tower: large deformation, low rigidity, design is limited by rigidity, and cannot give full play to the strength of steel.

[0011] 7. Challenges in steel tower processing and transportation: As power towers become larger, the outer diameter of the steel tower and the thickness of the steel plate increase, which places higher demands on processing technology, welding technology, and transportation and installation.

[0012] 8. The problem of over-limit transportation of horizontal axis power towers: Wind turbine components are prone to over-limit, and transportation costs are high and difficult.

[0013] 9. Difficulty in welding and installation of large cylindrical towers: high welding requirements, and great difficulty in lifting and installation.

[0014] 10. The steel tower foundation is large in size: it leads to large earth and stone excavation and serious soil and water damage, which limits its application in mountain wind farms.

[0015] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0016] To this end, an embodiment of the present invention provides a lattice-type vertical axis wind power generation tower with high grid system stability and high wind energy conversion efficiency.

[0017] According to an embodiment of the present invention, a lattice-type vertical axis wind power tower comprises: an iron tower; a plurality of cross arms, wherein the plurality of cross arms are arranged on the iron tower at intervals along the up-down direction; a plurality of wind power generation components, wherein each of the cross arms is provided with at least one wind power generation component and the wind power generation components are suitable for generating electricity by utilizing wind energy, so that the wind power generation components are arranged at various heights of the iron tower through the cross arms, so that the wind power generation components generate electricity by utilizing wind resources at different heights; and a power transmission component, wherein the power transmission component is connected to the plurality of wind power generation components, so that the electric energy generated by the plurality of wind power generation components is transmitted to a collection box or a collection station through the power transmission component.

[0018] The lattice vertical axis wind power tower of the embodiment of the present invention is provided with multiple cross arms and multiple wind power generation components, which utilize the kinetic energy of the wind field at other heights within the entire tower height, can fully utilize the wind resources at different heights, and improve the power generation output power of the power tower and the stability of the power grid system composed of the power tower.

[0019] In some embodiments, the plurality of cross arms include a plurality of first cross arms and a plurality of second cross arms, and the plurality of first cross arms and the plurality of second cross arms are alternately arranged on the tower along the up and down directions. In a projection plane orthogonal to the up and down directions, an extension direction of the first cross arm and an extension direction of the second cross arm intersect at an angle, and the plurality of wind power generation components are arranged one by one on the plurality of first cross arms and the plurality of second cross arms.

[0020] In some embodiments, in a projection plane orthogonal to the up-down direction, an extension direction of the first cross arm and an extension direction of the second cross arm are orthogonal.

[0021] In some embodiments, the crossarm includes a first sub-crossarm and a second sub-crossarm, the first sub-crossarm and the second sub-crossarm are arranged on the tower relative to each other along the width direction of the tower, at least one wind power generation component is provided on the first sub-crossarm and the second sub-crossarm, and the wind power generation component is arranged adjacent to the free end of the crossarm.

[0022] In some embodiments, the plurality of wind power generation components include a plurality of first wind power generation components and a plurality of second wind power generation components, the first wind power generation components are rotatably disposed on the first sub-cross-arm and are disposed adjacent to the free end of the first sub-cross-arm, the second wind power generation components are rotatably disposed on the second sub-cross-arm and are disposed adjacent to the free end of the second sub-cross-arm, and the first wind power generation components and the second wind power generation components are spaced apart and relatively disposed along the width direction of the tower.

[0023] In some embodiments, the wind power generation component includes: a generator, which is arranged on the crossarm; a wind wheel, which includes a plurality of blades, which extend in the up and down directions and are all connected to the generator, so that the wind wheel utilizes wind energy to rotate to drive the generator to generate electricity.

[0024] In some embodiments, the lattice-type vertical axis wind power tower also includes a connecting shaft, a first flange is provided at the lower end of the connecting shaft, the wind power generation component is arranged on the connecting shaft, a second flange is provided on the cross arm, and the first flange and the second flange are connected by fasteners so that the wind turbine is arranged on the cross arm through the connecting shaft.

[0025] In some embodiments, the lattice vertical axis wind power tower also includes: a derrick, which is arranged in the tower and extends from the bottom of the tower to the top of the tower; a derrick foundation, which is suitable for being arranged in the ground, and the derrick is arranged on the derrick foundation so that the derrick foundation supports the derrick; a walkway and a rest platform, which are arranged on the crossbeam, and the walkway and the rest platform are connected to the derrick so as to enter the walkway and the rest platform through the derrick.

[0026] In some embodiments, the iron tower is a lattice tower, which includes a first section and a second section connected in sequence along the up-down direction, the cross-sectional areas of the first section and the second section gradually increase from top to bottom, and in a projection plane orthogonal to the width direction of the iron tower, the extension direction of the outer peripheral surface of the first section intersects with the up-down direction to form a first angle, and the extension direction of the outer peripheral surface of the second section intersects with the up-down direction to form a second angle, and the first angle is smaller than the second angle.

[0027] In some embodiments, the iron tower includes a tower body and a plurality of tower legs, the plurality of tower legs are arranged below the tower body at intervals along the circumference of the iron tower, the wind power tower also includes a plurality of pile foundations, the plurality of pile foundations are suitable for being set in the ground, and the plurality of tower legs are arranged one by one on the plurality of pile foundations so that the pile foundations support the iron tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of a lattice-type vertical axis wind power generation tower according to an embodiment of the present invention.

[0029] Figure 2 It is a left view of a lattice-type vertical axis wind power generation tower according to an embodiment of the present invention.

[0030] Figure 3 yes Figure 2 A partial enlarged view of middle A.

[0031] Figure 4 It is a structural schematic diagram of a wind power generation component of a lattice-type vertical axis wind power generation tower according to an embodiment of the present invention.

[0032] Lattice type vertical axis wind power tower 100;

[0033] Crossarm 1; first crossarm 11; second crossarm 12; first sub-crossarm 13; second sub-crossarm 14; second flange 15; first section 16; second section 17; wind power generation component 2; first wind power generation component 21; second wind power generation component 22; generator 23; wind wheel 24; power transmission component 3; connecting shaft 4; first flange 41; derrick 5; derrick foundation 51; walkway and rest platform 6; iron tower 7; tower body 71; tower leg 72; pile foundation 8. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] The following describes a lattice vertical axis wind power generation tower 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0036] like Figure 1-4 As shown, the lattice vertical axis wind power generation tower 100 according to an embodiment of the present invention includes an iron tower 7, a plurality of cross arms 1, a plurality of wind power generation components 2 and a power transmission component 3.

[0037] A plurality of cross arms 1 are arranged on the tower 7 at intervals along the vertical direction. Figure 1 As shown, the iron tower 7 is a vertical iron tower extending in the up-down direction, and the cross arms 1 are arranged on the iron tower 7 at intervals in the up-down direction.

[0038] Each cross arm 1 is provided with at least one wind power generation component 2 and the wind power generation component is suitable for generating electricity by utilizing wind energy, so that the wind power generation component 2 is arranged at different heights of the iron tower 7 through the cross arm 1, so that the wind power generation component 2 generates electricity by utilizing wind resources at different heights. Figure 1 and Figure 2As shown, the wind power generation components 2 are vertical axis wind turbines 23 and the cross arms 1 are all equipped with wind power generation components 2, so that the wind power generation components 2 are arranged at various height positions of the tower 1 along the up and down directions through the cross arms 1, so that the wind power generation components 2 can more effectively capture and utilize wind energy from different directions and heights, so that the wind power generation components 2 can utilize wind resources at different heights to generate electricity, thereby improving the power generation efficiency of the vertical axis wind power tower 100.

[0039] The power transmission component 3 is connected to the plurality of wind power generation components 2 so that the electric energy generated by the plurality of wind power generation components 2 is transmitted to the collection box or collection station through the power transmission component 3. Specifically, Figure 1 As shown, the power transmission component 3 is connected to multiple wind power generation components 2, so that the electric energy generated by the multiple wind power generation components 2 is transmitted to the collection box or collection station through the power transmission component 3. At the same time, the power transmission component 3 can stabilize and increase the voltage of the electric energy generated by the wind power generation components 2 through the transformer, and then perform voltage frequency conversion through the inverter, and finally output it to the power grid.

[0040] The lattice-type vertical axis wind power tower 100 of the embodiment of the present invention is provided with a plurality of cross arms 1 and a plurality of wind power generation components 2. By arranging a plurality of wind power generation components 2 of the same or different models on the plurality of cross arms 1, and the plurality of wind power generation components 2 are spaced a certain distance in the vertical direction, mutual interference can be reduced while fully utilizing wind resources at different heights. Thus, the power generation output power of the vertical axis wind power tower 100 is improved, and the application of the wind power generation components 2 is promoted from small power generation scenarios to medium and large power generation scenarios. Moreover, the wind power generation components 2 arranged in the upper and lower directions can utilize the kinetic energy of the wind field at other heights within the height of the entire iron tower 7, so that the conversion efficiency of wind energy is greatly improved. Thus, the output power of power generation is improved, and the stability of the power grid system composed of the wind power generation components 2 is also improved at the same time.

[0041] In some embodiments, the plurality of cross arms 1 of the lattice vertical axis wind power generation tower 100 include a plurality of first cross arms 11 and a plurality of second cross arms 12, and the plurality of first cross arms 11 and the plurality of second cross arms 12 are alternately arranged on the iron tower 7 along the up-down direction, and in a projection plane orthogonal to the up-down direction, the extension direction of the first cross arm 11 and the extension direction of the second cross arm 12 intersect at an angle, and the plurality of wind power generation components 2 are arranged on the plurality of first cross arms 11 and the plurality of second cross arms 12 in a one-to-one correspondence. Specifically, as Figure 1 and Figure 2As shown, a plurality of first cross arms 11 are arranged at intervals in the vertical direction, a second cross arm 12 is provided between two adjacent first cross arms 11, the extension direction of the first cross arm 11 and the extension direction of the second cross arm 12 intersect at an angle, and at least one wind power generation component 2 is provided on each first cross arm 11 and each second cross arm 12, so that the wind power generation components 2 on the first cross arm 11 and the wind power generation components 2 on the second cross arm 12 are staggered in the vertical direction. Thus, the cross arms 1 and the wind turbines can be flexibly arranged in staggered layers and orientations according to the horizontal and vertical airflow conditions of the wind and the eddy currents caused by adjacent wind turbines. That is, the wind power generation components 2 can be randomly arranged in different orientations such as up, down, front, back, left, and right according to factors such as wind speed, wind direction, and the influence range of adjacent wind turbines, so as to reduce airflow interference between the wind power generation components 2, so that the wind power generation components 2 can more effectively capture wind energy from different directions. At the same time, the wind power generation components 2 can also adopt various matching models on the market, and the power of vertical axis wind turbines on different cross arms 1 can be adjusted according to the wind speed to improve the power generation efficiency of the power tower 100.

[0042] In the projection plane orthogonal to the up-down direction, the extension direction of the first cross arm 11 is orthogonal to the extension direction of the second cross arm 12. Figure 1 and Figure 2 As shown, the first cross arm 11 extends in the left-right direction, the second cross arm 12 extends in the front-back direction, and the first cross arm 11 and the second cross arm 12 are spaced apart in the up-down direction, so that the first cross arm 11 and the second cross arm 12 are orthogonally arranged. Thus, the orthogonally arranged first cross arm 11 and the second cross arm 12 are alternately arranged in the up-down direction on the iron tower 7, forming a mutually balanced structure, which helps to reduce the force influence of the external load on the iron tower 7, thereby improving the bearing capacity of the entire iron tower 7. When the wind direction changes, the orthogonally arranged first cross arm 11 and the second cross arm 12 can resist the torque and lateral force brought by the wind, thereby maintaining the stability of the iron tower 7. Secondly, the orthogonal arrangement of the first crossarm 11 and the second crossarm 12 allows the wind power generation components 2 arranged on the first crossarm 11 and the wind power generation components 2 arranged on the second crossarm 12 to be staggered in the circumferential direction of the tower 7, so that the wind power generation components 2 can more effectively capture wind energy from different directions, reduce wind energy interference between the wind power generation components 2 on the first crossarm 11 and the wind power generation components 2 on the second crossarm 12, ensure the power generation efficiency of the wind power generation components 2, and improve the stability of power generation of the wind power generation components 2.

[0043] In some embodiments, the cross arm 1 includes a first sub-cross arm 13 and a second sub-cross arm 14, and the first sub-cross arm 13 and the second sub-cross arm 14 are arranged along the width direction of the tower 7 (eg Figure 1 The first and second sub-cross arms 13 and 14 are arranged on the tower 7 with a spacing therebetween, and at least one wind power generation component 2 is provided on each of the first and second sub-cross arms 13 and 14. Figure 1 and Figure 2 As shown, the first cross arm 11 and the second cross arm 12 both include a first sub-cross arm 13 and a second sub-cross arm 14. The first sub-cross arm 13 of the first cross arm 11 is fixedly mounted on the left end of the iron tower 7, and the second sub-cross arm 14 of the first cross arm 11 is fixedly mounted on the right end of the iron tower 7, and the first sub-cross arm 13 and the second sub-cross arm 14 are symmetrically arranged at intervals in the up-down direction. The first sub-cross arm 13 and the second sub-cross arm 14 of the first cross arm 11 both extend in the left-right direction, and the first sub-cross arm 13 and the second sub-cross arm 14 of the second cross arm 12 both extend in the front-back direction. The first sub-cross arm 13 of the second cross arm 12 is fixedly mounted on the front end of the iron tower 7, and the second sub-cross arm 14 of the second cross arm 12 is fixedly mounted on the rear end of the iron tower 7, and the first sub-cross arm 13 and the second sub-cross arm 14 are symmetrically arranged at intervals in the up-down direction. The first sub-cross arm 13 and the second sub-cross arm 14 can be provided with wind power generation components 2, so that the power generation tower 100 is more reasonably arranged.

[0044] In some embodiments, the plurality of wind power generation components 2 include a plurality of first wind power generation components 21 and a plurality of second wind power generation components 22, the first wind power generation components 21 are rotatably disposed on the first sub-cross arm 13 and are disposed adjacent to the free end of the first sub-cross arm 13, the second wind power generation components 22 are rotatably disposed on the second sub-cross arm 14 and are disposed adjacent to the free end of the second sub-cross arm 14, and the first wind power generation components 21 and the second wind power generation components 22 are disposed opposite to each other at intervals along the width direction of the iron tower 7. Specifically, as Figure 1 and Figure 2 As shown, the number of the first wind power generation components 21 and the number of the second wind power generation components are equal to the number of the cross arm 1. On the first cross arm 11, the first wind power generation component 21 is arranged at the left end of the first sub-cross arm 13, and the second wind power generation component 22 is arranged at the right end of the second sub-cross arm 14. On the second cross arm 12, the first wind power generation component 21 is arranged at the front end of the first sub-cross arm 13, and the second wind power generation component 22 is arranged at the rear end of the second sub-cross arm 14. As a result, the first wind power generation component 21 and the second wind power generation component 22 are symmetrically arranged on the cross arm 1, which not only ensures that the first wind power generation component 21 and the second wind power generation component 22 can capture wind energy at the best position, but also achieves the balance of the overall structural load to a certain extent. Compared with the existing wind turbine's unidirectional bending stress characteristics, the mechanical properties have been greatly improved, and the economy, durability and safety of the power tower 100 have been improved.

[0045] In some embodiments, the wind power generation assembly 2 includes a generator 23 and a wind wheel 24.

[0046] The generator 23 is arranged on the cross arm 1, and the wind wheel 24 includes a plurality of blades, which extend in the up-down direction and are all connected to the generator 23, so that the wind wheel 24 rotates by utilizing wind energy to drive the generator 23 to generate electricity. Figure 3 and Figure 4 As shown, the generator 23 is fixedly mounted on the cross arm 1, the wind wheel 24 is arranged on the outer ring of the generator 23 and connected to the input shaft of the generator 23, and a plurality of blades are arranged at equal intervals along the circumference of the input shaft of the generator 23. Wind energy drives the wind wheel 24 to rotate, and the wind wheel 24 drives the generator 23 to rotate so that the generator 23 generates electricity.

[0047] The lattice vertical axis wind power generation tower 100 further includes a connecting shaft 4, a first flange 41 is provided at the lower end of the connecting shaft 4, the wind power generation assembly 2 is provided on the connecting shaft 4, a second flange 15 is provided on the cross arm 1, and the first flange 41 and the second flange 15 are connected by fasteners so that the wind turbine 23 is provided on the cross arm 1 through the connecting shaft 4. Specifically, Figure 3 and Figure 4 As shown, the connecting shaft 4 is a steel pipe, a first flange 41 is welded to the lower end of the connecting shaft 4, the upper end of the connecting shaft 4 is welded to the bottom of the generator 23 of the wind power generation component 2, a second flange 15 is fixed to the cross arm 1 by fasteners, and the first flange 41 and the second flange 15 are connected by fasteners, so that the wind power generation component 2 can be detachably arranged on the cross arm 1.

[0048] In some embodiments, the lattice vertical axis wind power generation tower 100 further includes a derrick 5 and a derrick foundation 51.

[0049] The derrick 5 is arranged in the iron tower 7 and extends from the bottom of the iron tower 7 to the top of the iron tower 7. Specifically, Figure 1 and Figure 2 As shown, the derrick 5 includes a straight ladder, a rotating ladder or a climbing machine. The derrick 5 is arranged in the iron tower 7 and extends upward from the ground to the top of the iron tower 7, so that maintenance personnel can climb into the power tower 100 through the derrick 5 to repair the power tower 100.

[0050] The derrick foundation 51 is suitable for being arranged in the ground, and the derrick 5 is arranged on the derrick foundation 51, so that the derrick foundation 51 supports the derrick 5. Specifically, as Figure 1 and Figure 2 As shown, the derrick foundation 51 is arranged in the ground to support the derrick 5 and provide an installation foundation for the derrick 5 to prevent the derrick 5 from sinking or deforming.

[0051] In some embodiments, the lattice vertical axis wind power generation tower 100 further includes a walkway and a resting platform 6, which are arranged on the cross arm 1, and the walkway and the resting platform 6 are connected to the derrick 5, so that the walkway and the resting platform 6 can be entered through the derrick 5. Specifically, Figure 1As shown, the rest platform and walkway are arranged on the crossarm 1 and are provided with anti-slip measures, guardrails and other safety facilities. The walkway and rest platform 6 are connected to the derrick 5, so that the operation and maintenance personnel can enter the walkway and rest platform 6 through the derrick 5, and move between the crossarms 1 at different heights through the walkway to inspect the equipment, or rest on the rest platform.

[0052] In some embodiments, the iron tower 7 is a lattice tower, and the iron tower 7 includes a first section 16 and a second section 17 connected in sequence along the up-down direction, and the cross-sectional areas of the first section 16 and the second section 17 gradually increase from top to bottom. In a projection plane orthogonal to the width direction of the iron tower 7, the extension direction of the outer peripheral surface of the first section 16 intersects the up-down direction to form a first angle, and the extension direction of the outer peripheral surface of the second section 17 intersects the up-down direction to form a second angle, and the first angle is smaller than the second angle. Specifically, as Figure 1 As shown, the lattice tower is composed of angle steel, channel steel, I-beam, steel pipe, composite steel, steel tube concrete and other components connected by bolts and welded. The lattice tower design can avoid the obstacles of the steel cylinder power generation tower 100 due to road transportation restrictions and high manufacturing costs. It has the advantages of easy manufacturing, low investment cost, simple transportation, convenient installation and less impact on the ecological environment. Therefore, the iron tower 7 is a lattice tower, which can reduce the transportation, processing, manufacturing and installation costs of the power generation tower 100. The upper end surface of the second section 17 is a variable slope surface, and the cross-section of the first section 16 is small, thereby ensuring the safe distance between the wind wheel 24 located on the first section 16 and the tower body 71. Since the structural internal force of the lower iron tower 7 is getting larger and larger at the bottom, the requirements of bearing capacity and stiffness can be met by increasing the cross-sectional size. Therefore, the setting of the variable slope surface improves the safety performance of the iron tower 7, optimizes the steel index of the iron tower 7, and makes the wind turbine layout more flexible.

[0053] In some embodiments, the iron tower 7 includes a tower body 71 and a plurality of tower legs 72, wherein the plurality of tower legs 72 are arranged below the tower body 71 at intervals along the circumference of the iron tower 7, and the wind power generation tower 100 further includes a plurality of pile foundations, wherein the plurality of pile foundations are suitable for being arranged in the ground, and the plurality of tower legs 72 are arranged on the plurality of pile foundations in a one-to-one correspondence, so that the pile foundations support the iron tower 7. Specifically, as Figure 1 and Figure 2As shown, there are four tower legs 72, which are evenly spaced along the circumference of the iron tower 7 and below the tower body 71. There are four pile foundations, which can be set in the ground and firmly connected to the tower legs 72 by connecting parts (such as anchor bolts, welding, etc.) to ensure that the load can be smoothly transmitted, so that the iron tower 7 supported by the pile foundation bears the load from the tower legs 72 and transmits it to the soil or rock layer, reducing the settlement and inclination of the iron tower 7 and improving the stability and safety of the iron tower 7 structure. In addition, the size of the tower legs 72 can be set according to actual conditions (in other words, the four tower legs 72 can be combined at will, and equal lengths, unequal lengths, and unequal heights can be set according to the terrain), for example: Figure 1 As shown, when the iron tower 7 is installed on flat ground, the sizes of the four tower legs 72 are all equal. Figure 2 As shown, when the iron tower 7 is installed on a mountain, the tower legs 72 can be provided with tower legs 72 of different sizes according to the height of the mountain. While ensuring that the iron tower 7 is vertically arranged and preventing the iron tower 7 from tilting, it also reduces earthwork excavation, prevents damage to surrounding vegetation, and prevents soil erosion or small landslides, thereby reducing vegetation damage and property losses and ensuring the stability of the iron tower 7.

[0054] In some embodiments, an equipment box and a control box are also provided at the bottom of the wind power tower 100. The equipment box is an important component of the power tower 100, and is usually used to protect, accommodate and control key equipment in the power generation process. The equipment box usually integrates key equipment in the wind power generation system, such as converters, controllers, sensors, etc. These devices are crucial to the efficiency, stability and safety of wind power generation. Various sensors and controllers are installed in the control box to monitor various parameters of the wind turbine 23 and control the generator 23 in real time according to the monitoring results. At the same time, the control box also undertakes the important task of lightning protection. Through reasonable grounding and equipotential connection design, the impact of lightning on the wind power generation component 2 is reduced to a minimum.

[0055] In some embodiments, a grid plate, a high-strength steel plate, and a reserved bolt hole (for connecting a vertical axis fan) are provided on the upper part of the cross arm 1. The grid plate is used as a walkway and a rest platform 6 for construction and maintenance personnel to operate, and the high-strength steel plate is connected to the main material of the cross arm 1, and then connected to the flange of the vertical axis generator 23 through the reserved bolt holes.

[0056] In some embodiments, the wind turbine tower also includes tower climbing spikes and anti-fall devices for tower climbing operations and safety protection measures for operators. The tower climbing function overlaps with the derrick 5 or wellbore function and can be used in this way when the former function fails.

[0057] The lattice vertical axis wind power tower 100 of the embodiment of the present invention can be used in any scene suitable for building a wind power station, and its advantages are more obvious when applied to scenes with large terrain undulations such as mountainous areas and hills. The lattice wind power tower of the present invention is provided with multiple cross arms 1 on the same lattice iron tower 7, and a wind power generation component 2 is installed on each cross arm 1. According to the wind energy capture effect, the cross arms 1 and the wind power generation components 2 can be arranged at a certain height in the vertical direction, or can be arranged in a staggered manner along the front, back, left and right of the frame body. At the same time, the model of the vertical axis generator 23 can be freely selected according to wind speed, power generation, etc.; the bottom of the iron tower 7 is the foundation of the wind power tower, and pile foundations (single piles, multiple piles, etc.), independent foundations, combined foundations, etc. can be used according to geology, upper structure loads, etc.

[0058] 1) The novel power generation tower 100 of the present invention arranges multiple wind power generation components 2 of the same or different models on a tower body, and is spaced a certain distance apart in the vertical direction, thereby reducing mutual interference and making full use of wind resources at different heights. This can greatly improve the power output of the vertical axis wind power generation tower 100, and further promote the application of wind power generation components 2 from small power generation scenarios to medium and large power generation scenarios. The novel power generation tower 100 arranges multiple wind power generation components 2 along the longitudinal height, and the spacing can be flexibly adjusted according to wind measurement data, so that the kinetic energy of the wind field at other heights within the three-dimensional height of the entire iron tower 7 can be utilized, so that the conversion efficiency of wind energy is greatly improved.

[0059] In summary, the wind power tower of the present invention can not only improve the output power of power generation, but also improve the stability of the power grid system composed of the wind power generation components 2.

[0060] 2) The wind power generation assembly 2 of the present invention can be flexibly arranged in front, back, left, and right of the iron tower 7 to maximize the capture of wind energy. At the same time, this arrangement can achieve the balance of the overall structural load to a certain extent, and has greatly improved the mechanical properties compared to the unidirectional bending stress characteristics of the wind turbine, which has a high value for the economy, durability, and safety of the wind tower.

[0061] 3) The rods on the tower 7 are mainly connected by bolts. To address the vibration problem commonly faced by wind turbines 23, anti-loosening bolts can be used to avoid the problem of bolt loosening caused by frequent vibrations. At the same time, a lattice-type flexible structural system can be used to partially absorb the adverse effects of vibrations.

[0062] 4) The wind power generation assembly 2 is connected to each of the cross arms 1 extending outward from the tower 7 through a high-strength flange. This construction method is simple to implement and is convenient for processing, construction, and subsequent operation and maintenance.

[0063] 5) The lattice-type iron tower 7 can match various types of wind power generation components 2, and the wind power generation components 2 can be directly purchased on the market.

[0064] 6) The lattice-type iron tower 7 can avoid the obstacles of the conventional steel cylinder-type power generation tower 100 due to road transportation restrictions and high manufacturing costs, and has the advantages of easy manufacturing, low investment cost, simple transportation, convenient installation and less impact on the ecological environment.

[0065] 7) The lattice-type iron tower 7 can be set to a four-leg equal-height or unequal-height type. On flat ground, it can be set to a four-leg equal-height tower leg 72. In mountainous areas, the excavation of earthwork can be greatly reduced by setting unequal-height tower legs 72, reducing the damage to surrounding vegetation and avoiding soil erosion. Because the foundation of the lattice iron tower 7 is divided into four independent foundations according to the number of tower legs 72, the overall four-leg force mode has been greatly improved compared to the force mode of the single-cylinder cantilever end, which can significantly reduce a series of construction difficulties in the original large-volume concrete construction process. At the same time, the foundation type of the iron tower 7 can flexibly select economical and environmentally friendly foundations such as pile foundations, independent foundations, and combined foundations according to factors such as geology and topography. Compared with the steel cylinder wind turbine foundation, the foundation of the wind power tower can not only significantly reduce the amount of materials, but also significantly compress the construction difficulty and construction period, and at the same time, it can more easily meet the design and construction quality requirements.

[0066] 8) Compared with the foundation of the conical fan, the foundation of the lattice tower 7 can not only significantly reduce the amount of materials, but also significantly shorten the construction difficulty and construction period, and at the same time, it can more easily meet the design and construction quality requirements.

[0067] 9) The lattice iron tower 7 of the wind power tower is provided with a variable slope surface. The cross section of the upper structure is small. The lower tower body 71 has a larger cross section because the internal force of the structure at the bottom is getting larger. The cross section size can be increased to meet the requirements of bearing capacity and rigidity. Therefore, the cross section of the lower structure is larger. The final cross section size can be determined by optimizing the slope. The setting of the variable slope surface makes the overall structure safer and more reliable, and at the same time, the steel index of the iron tower 7 can be optimized, making the layout of the wind turbine more flexible.

[0068] 10) The wind turbine tower is provided with a derrick 5 or a shaft, and can be provided with a straight ladder, a rotating ladder, a climbing machine or other tower climbing methods according to actual needs (the schematic diagram shows a rotating ladder) to facilitate the later operation and maintenance personnel to climb the tower. At the same time, a walkway and a rest platform 6 are provided at the intersection of the derrick 5 or the shaft and the ground wire cross arm 1, so that maintenance personnel can go to the end of the cross arm 1 for maintenance and repair work. At the same time, handrails are provided on both sides of the walkway to provide safety protection for tower climbers. When set as a climbing machine, it is necessary to connect to a power supply, and the power supply equipment can be set in an equipment box at the bottom of the derrick 5 or the shaft, so that the floor space inside the tower base can be fully utilized.

[0069] The lattice iron tower 7 used in the wind power tower is easy to manufacture (through bolt connection or local factory welding, eliminating the difficult coiling and welding of large and high cylindrical wind power towers), less consumables (giving full play to the mechanical properties of steel or combined steel), low cost (the cost of factory batch purchase of steel is low and easy to process), small component size (a single steel section is small, which can be spliced ​​and assembled on site), and convenient transportation (steel can be transported in large quantities at a time). In this way, the power generation tower 100 of the present invention can realize the layout of large wind turbines and ultra-high wind turbines in special scenarios.

[0070] In summary, this practical wind power tower design has a series of advantages such as high wind power generation efficiency, excellent mechanical properties of the iron tower 7, strong overall structural stability, easy processing and manufacturing, reduced construction difficulty, easy to ensure project quality, convenient installation and transportation, shortened construction period, economy and environmental protection, and excellent economic performance.

[0071] The lattice vertical axis wind power generation tower 100 of the embodiment of the present invention has the following advantages:

[0072] 1) By arranging multiple wind power generation components 2 of the same or different models on a tower body and spacing them at a certain distance in the vertical direction, mutual interference can be reduced and wind resources at different heights can be fully utilized. This can greatly improve the power generation output power of the vertical axis wind power tower 100, and further promote the application of wind power generation components 2 from small power generation scenarios to medium and large power generation scenarios.

[0073] 2) Multiple wind power generation components 2 are arranged along the longitudinal height, and the intervals can be flexibly adjusted according to wind measurement data, so that the kinetic energy of the wind field at other heights within the three-dimensional height of the entire tower 7 can be utilized, so that the conversion efficiency of wind energy is greatly improved.

[0074] The above two items 1) and 2) can not only improve the output power of power generation, but also improve the stability of the power grid system composed of the wind power generation components 2.

[0075] 3) The wind power generation components 2 can be flexibly arranged in front, back, left and right of the iron tower 7 to maximize the capture of wind energy. At the same time, this arrangement can achieve the balance of the overall structural load to a certain extent. Compared with the existing wind turbine's unidirectional bending stress characteristics, the mechanical properties have been greatly improved, which has a high value for the economy, durability and safety of the wind tower.

[0076] 4) The rods on the tower 7 are mainly connected by bolts. At present, in view of the vibration problem commonly faced by the wind turbine 23, anti-loosening bolts can be used to avoid the problem of bolt loosening caused by frequent vibrations. At the same time, the lattice-type flexible structural system can partially reduce the adverse effects of vibration.

[0077] 5) The wind power generation assembly 2 is connected to each of the cross arms 1 extending outward from the iron tower 7 through a high-strength flange. This construction method is simple to implement and is convenient for processing, construction, and subsequent operation and maintenance.

[0078] 6) The lattice-type iron tower 7 can match various types of wind power generation components 2, and the wind power generation components 2 can be directly purchased on the market.

[0079] 7) The lattice-type iron tower 7 can avoid the obstacles of the conventional steel cylinder-type power generation tower 100 due to road transportation restrictions and high manufacturing costs, and has the advantages of easy manufacturing, low investment cost, simple transportation, convenient installation and less impact on the ecological environment.

[0080] 8) The lattice-type iron tower 7 can be set to have four legs of unequal height, so that the excavation of earthwork can be greatly reduced in mountainous areas, the damage to surrounding vegetation can be reduced, and soil erosion can be avoided. Because the foundation of the lattice iron tower 7 is divided into four independent foundations according to the number of tower legs 72, the overall four-leg force mode has been greatly improved compared to the force mode of the single cylinder cantilever end, which can significantly reduce a series of construction difficulties in the original large-volume concrete construction process. At the same time, the foundation type of the iron tower 7 can flexibly select economical and environmentally friendly foundations such as pile foundations, independent foundations, and combined foundations according to factors such as geology and topography. Compared with the steel cylinder wind turbine foundation, the foundation of the wind power tower can not only significantly reduce the amount of materials, but also significantly compress the construction difficulty and construction period, and at the same time, it can more easily meet the design and construction quality requirements.

[0081] 9) Compared with the foundation of the conical fan, the foundation of the lattice tower 7 can not only significantly reduce the amount of materials, but also significantly shorten the construction difficulty and construction period, and at the same time, it can more easily meet the design and construction quality requirements.

[0082] 10) The lattice iron tower 7 of the wind turbine tower is provided with a variable slope surface. The upper structure has a smaller cross-section and the lower structure has a larger cross-section. The setting of the variable slope surface makes the overall structure safer and more reliable. At the same time, it can optimize the steel material index of the iron tower 7 and make the layout of the wind turbine more flexible.

[0083] 11) Wind turbine towers can adapt to complex geographical environments and harsh weather conditions.

[0084] 12) The wind power tower is provided with a derrick 5 or a shaft, and can be provided with a straight ladder, a rotating ladder, a climbing machine or other tower climbing methods according to actual needs (the schematic diagram follows the rotating ladder) to facilitate the later operation and maintenance personnel to climb the tower. At the same time, a walkway and a rest platform 6 are provided at the intersection of the derrick 5 or the shaft and the ground wire cross arm 1, so that maintenance personnel can go to the end of the cross arm 1 for maintenance and repair work. At the same time, handrails are provided on both sides of the walkway to provide safety protection for tower climbers. When set as a climbing machine, it is necessary to connect to the power supply, and the power supply equipment can be set in the equipment box at the bottom of the derrick 5 or the shaft, so that the floor space inside the tower base can be fully utilized.

[0085] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0086] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0087] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0089] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0090] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A lattice vertical axis wind power tower, characterized in that: include: Iron Tower; A plurality of cross arms, wherein the plurality of cross arms are arranged on the iron tower at intervals in the vertical direction; A plurality of wind power generation components, each of the cross arms is provided with at least one wind power generation component and the wind power generation component is suitable for generating electricity using wind energy, so that the wind power generation components are arranged at different heights of the tower through the cross arms, so that the wind power generation components generate electricity using wind resources at different heights; A power transmission component is connected to the plurality of wind power generation components so that the electric energy generated by the plurality of wind power generation components is transmitted to a collection box or a collection station through the power transmission component.

2. The lattice vertical axis wind power tower according to claim 1, characterized in that: The multiple cross arms include multiple first cross arms and multiple second cross arms. The multiple first cross arms and the multiple second cross arms are alternately arranged on the tower along the up and down directions. In the projection plane orthogonal to the up and down directions, the extension direction of the first cross arms and the extension direction of the second cross arms intersect at an angle. The multiple wind power generation components are arranged on the multiple first cross arms and the multiple second cross arms in a one-to-one correspondence.

3. The lattice vertical axis wind power tower according to claim 1, characterized in that: In a projection plane perpendicular to the up-down direction, an extension direction of the first cross arm and an extension direction of the second cross arm are perpendicular to each other.

4. The lattice vertical axis wind power tower according to claim 1, characterized in that: The cross arm includes a first sub-cross arm and a second sub-cross arm, and the first sub-cross arm and the second sub-cross arm are arranged on the tower with an interval and relative to each other along the width direction of the tower. At least one wind power generation component is provided on the first sub-cross arm and the second sub-cross arm, and the wind power generation component is arranged adjacent to the free end of the cross arm.

5. The lattice vertical axis wind power tower according to claim 4, characterized in that: The multiple wind power generation components include multiple first wind power generation components and multiple second wind power generation components. The first wind power generation components are rotatably disposed on the first sub-cross arm and are disposed adjacent to the free end of the first sub-cross arm. The second wind power generation components are rotatably disposed on the second sub-cross arm and are disposed adjacent to the free end of the second sub-cross arm. The first wind power generation components and the second wind power generation components are disposed opposite to each other at intervals along the width direction of the tower.

6. The lattice vertical axis wind power generation tower according to claim 1, characterized in that: The wind power generation component comprises: a generator, wherein the generator is arranged on the cross arm; The wind wheel comprises a plurality of blades, wherein the plurality of blades extend in the up-down direction and are all connected to the generator, so that the wind wheel utilizes wind energy to rotate to drive the generator to generate electricity.

7. The lattice vertical axis wind power tower according to claim 1, characterized in that: It also includes a connecting shaft, a first flange is provided at the lower end of the connecting shaft, the wind power generation component is arranged on the connecting shaft, and a second flange is provided on the cross arm. The first flange and the second flange are connected by fasteners so that the wind generator is arranged on the cross arm through the connecting shaft.

8. The lattice vertical axis wind power generation tower according to claim 1, characterized in that: Also includes: A derrick, the derrick is arranged in the iron tower and extends from the bottom of the iron tower to the top of the iron tower; A derrick foundation, wherein the derrick foundation is suitable for being arranged in the ground, and the derrick is arranged on the derrick foundation so that the derrick foundation supports the derrick; A walkway and a rest platform, wherein the walkway and the rest platform are arranged on the cross arm, and the walkway and the rest platform are both connected with the derrick so as to allow people to enter the walkway and the rest platform through the derrick.

9. The lattice vertical axis wind power generation tower according to claim 1, characterized in that: The iron tower is a lattice tower, comprising a first section and a second section connected in sequence along the up-down direction, the cross-sectional areas of the first section and the second section gradually increasing from top to bottom, and in a projection plane orthogonal to the width direction of the iron tower, an extension direction of an outer peripheral surface of the first section intersects with the up-down direction to form a first angle, and an extension direction of an outer peripheral surface of the second section intersects with the up-down direction to form a second angle, and the first angle is smaller than the second angle.

10. The lattice vertical axis wind power generation tower according to claim 1, characterized in that: The iron tower includes a tower body and a plurality of tower legs, wherein the plurality of tower legs are arranged below the tower body at intervals along the circumference of the iron tower. The wind power generation tower also includes a plurality of pile foundations, wherein the plurality of pile foundations are suitable for being arranged on the ground, and the plurality of tower legs are arranged on the plurality of pile foundations in a one-to-one correspondence so that the pile foundations support the iron tower.

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