Wind power tower and wind power generation and transmission system

Abstract

The wind power tower comprises an iron tower, a wind power generation assembly, a plurality of cross arms and a power transmission line, the wind power generation assembly is arranged on the iron tower and can generate power through wind energy, the cross arms are arranged on the iron tower, the cross arms and the wind power generation assembly are arranged at intervals in the vertical direction, and the power transmission line is arranged on the iron tower. The power transmission line is hung on a cross arm of an iron tower, two ends of the power transmission line are respectively connected with the wind power generation assembly and the current collection box, and electric energy generated by the wind power generation assembly is transmitted to the current collection box or the collection station through the power transmission line. Or the two ends of the power transmission line are connected with the wind power generation assembly and the wind power towers respectively, different wind power towers are connected in series or in parallel, and then electric energy generated by the wind power generation assembly is transmitted into the current collection box or the collection station through the power transmission line. The wind power tower has the advantages of being novel in structure, convenient to construct, economical, environmentally friendly and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind power generation, specifically, a wind power tower and wind power transmission system. BACKGROUND

[0002] The device required by wind power generation is called a wind power assembly group, and the wind power assembly group comprises three parts of a wind wheel (including a tail rudder), a power generation assembly and a tower, the parts work cooperatively, can effectively convert wind energy into electric energy, and thereby improve energy utilization efficiency.

[0003] In the related art, the tower of the wind power assembly has great construction and processing difficulty, limited application scenarios and low utilization efficiency. UTILITY MODEL CONTENT

[0004] The utility model is made based on the discovery and understanding of the inventor to the following facts and problems:

[0005] In the related art, the wind power tower has the following shortcomings: 1. The electric energy generated by the wind turbine generator is collected into a power collection box by a buried cable, the power collection box collects the electric energy of multiple wind turbine generators, and then the electric energy in the power collection box is transmitted to a booster station through an overhead line, a buried line or a submarine line. The buried cable between the wind turbine and the power collection box has high investment, which is 2-3 times of the overhead line. 2. The increase of the height of the wind power tower leads to a sharp increase of the bending moment of the tower body, a large amount of steel is used, and the traditional conical cylinder tower has large deformation, small rigidity and limited processing. 3. The large-scale and super-high steel tower cylinder puts forward higher requirements on processing technology, welding technology and transportation and installation. 4. The components of the wind turbine generator are over-limit, the transportation cost is high and land transportation is difficult. 5. The large-scale cylindrical tower has high welding requirements and large lifting and installation difficulty. 6. The large size of the steel tower cylinder foundation leads to large amount of earthwork excavation, serious water and soil damage and limited application of mountain wind power plants.

[0006] The utility model aims to at least solve one of the technical problems in the related art to some extent.

[0007] Therefore, the embodiment of the utility model provides a wind power tower with reasonable tower setting, high utilization efficiency of the tower, convenient construction and processing and economic and environmental protection.

[0008] The utility model provides a wind power transmission system which is convenient to process and construct, economic and environmental protection.

[0009] The wind power tower according to the embodiment of the utility model discloses a tower, a wind power assembly, a plurality of cross arms and a power transmission line, so that the wind power tower has the functions of power generation and power transmission, changes the transmission mode of the previous cylindrical wind power tower, that is, converting wind energy into electric energy and then transmitting the electric energy to a collection box or a collection station through a buried cable, fully utilizes the effective space of the tower, avoids the setting of the buried cable, saves engineering investment and improves the utilization efficiency of the tower.

[0010] The wind power tower according to the embodiment of the utility model discloses a tower, a wind power assembly, a plurality of cross arms and a power transmission line, so that the wind power tower has the functions of power generation and power transmission, changes the transmission mode of the previous cylindrical wind power tower, that is, converting wind energy into electric energy and then transmitting the electric energy to a collection box or a collection station through a buried cable, fully utilizes the effective space of the tower, avoids the setting of the buried cable, saves engineering investment and improves the utilization efficiency of the tower.

[0011] In some embodiments, the wind power tower further comprises a round steel cylinder extending in the up-down direction and arranged on the tower through a flange, and the wind power assembly is arranged on the tower through the round steel cylinder.

[0012] In some embodiments, the wind power tower further comprises a plurality of wire insulators, each of the wire insulators is arranged on one of the cross arms, and the power transmission line is hung on the cross arm through the wire insulator.

[0013] In some embodiments, the plurality of cross arms comprises a first cross arm, a second cross arm and a third cross arm, each of the first cross arm, the second cross arm and the third cross arm is arranged on the tower, the first cross arm and the second cross arm are arranged in the up-down direction, the second cross arm and the third cross arm are arranged in the width direction of the tower, each of the first cross arm, the second cross arm and the third cross arm is arranged below the wind power assembly and spaced from the wind power assembly in the up-down direction, and each of the first cross arm, the second cross arm and the third cross arm can hang the power transmission line.

[0014] In some embodiments, the tower is a lattice tower, the tower comprises a first section and a second section connected in sequence in the up-down direction, the first section is arranged on the second section, the wind power assembly is arranged on the first section, and the plurality of cross arms are arranged on the second section.

[0015] In some embodiments, the cross-sectional area of the first section and the second section gradually increases from top to bottom, and in a projection plane perpendicular to the width direction of the tower, the extension direction of the outer circumferential surface of the first section intersects with the top-bottom direction to form a first included angle, and the extension direction of the outer circumferential surface of the second section intersects with the top-bottom direction to form a second included angle, and the first included angle is smaller than the second included angle.

[0016] In some embodiments, the wind power tower further comprises a derrick arranged in the tower and extending from the bottom of the tower to the top of the tower; and a derrick foundation adapted to be arranged on the ground, the derrick being arranged on the derrick foundation so that the derrick foundation supports the derrick.

[0017] In some embodiments, the wind power tower further comprises a walkway and a rest platform arranged on the cross arm, and the walkway and the rest platform are both in communication with the derrick so as to enter the walkway and the rest platform through the derrick.

[0018] In some embodiments, the tower comprises a tower body and a plurality of tower legs arranged below the tower body in a circumferential direction of the tower, and the wind power tower further comprises a plurality of pile foundations each adapted to be arranged on the ground, and each of the plurality of tower legs is correspondingly arranged on one of the plurality of pile foundations so that the pile foundations support the tower.

[0019] The wind power generation and transmission system according to the embodiments of the present application comprises: a plurality of wind power towers, each of the wind power towers being the wind power tower according to any one of the above embodiments, and the plurality of wind power towers being connected in parallel or in series to form a power generation and transmission system; and a power collection box or a collection station, the power generation and transmission system being connected to the power collection box or the collection station so that the power generated by the power generation and transmission system is transmitted to the power collection box or the collection station. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic diagram of a wind power tower according to an embodiment of the present application.

[0021] Figure 2 FIG. 2 is a structural schematic diagram of a tower leg of the wind power tower according to an embodiment of the present application.

[0022] Figure 3 FIG. 3 is an installation schematic diagram of a cross arm and a conductor insulator of the wind power tower according to an embodiment of the present application.

[0023] FIG. 1 is a structural schematic diagram of a wind power tower according to an embodiment of the present application.

[0024] FIG. 1 is a structural schematic diagram of a wind power tower according to an embodiment of the present application.

[0025] Wind power generation component 2; power generation unit 21; wind turbine 22;

[0026] Crossarm 3; First crossarm 31; Second crossarm 32; Third crossarm 33;

[0027] 4. Transmission line; 5. Round steel cylinder; 6. Conductor insulator; 7. Derrick; 8. Derrick foundation; 10. Walkway and rest platform. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The wind turbine tower 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0030] like Figures 1-3 As shown, the wind power tower 100 according to an embodiment of the present utility model includes a tower 1, a wind power generation component 2, multiple crossarms 3 and transmission lines 4.

[0031] Wind power generation component 2 is mounted on tower 1, and can generate electricity using wind energy. Specifically, as follows: Figure 2 As shown, the wind power generation component 2 is located at the top of the iron tower 1, and the wind power generation component 2 can convert wind energy into electrical energy.

[0032] Multiple crossarms 3 are mounted on the tower 1 and spaced apart from the wind turbine components 2 in the vertical direction. Specifically, as shown... Figure 1 As shown, the crossarm 3 extends in the left and right directions and is fixed on the iron tower 1. The crossarm 3 is located below the wind power generation component 2 and is spaced apart from the wind power generation component 2 to prevent the wind power generation component 2 from crossing and colliding with the crossarm 3 when the wind power generation component 2 is generating electricity, thus ensuring the normal operation of the wind power generation component 2.

[0033] The transmission line 4 is suspended on the crossarm 3. One end of the transmission line 4 is connected to the wind turbine generator 2, and the other end of the transmission line 4 is adapted to connect to other wind turbine towers, collector boxes, or collection stations, so that the electrical energy generated by the wind turbine generator 2 can be transmitted to the collector box or collection station via the transmission line 4. Specifically, as shown... Figure 1 As shown, the transmission line 4 can be suspended on the crossarm 3 by an insulating string. The two ends of the transmission line 4 are connected to the wind power generation component 2 and the collector box or collection station, respectively, so that the electrical energy generated by the wind power generation component can be transmitted to the collector box or collection station through the transmission line. Alternatively, the two ends of the transmission line 4 can also be connected to other wind turbine towers, so that multiple wind turbine towers form a system and transmit the power to the collector box or collection station.

[0034] The utility model discloses an embodiment of wind power tower 100, set up iron tower 1, wind power generation assembly 2, a plurality of cross arms 3 and transmission line 4, through wind power generation assembly 2 utilize the wind energy and carry out power generation, and cross arm 3 and transmission line 4 can transport the electric energy of wind power generation assembly 2 to the far end's current collection box or the collection station, make wind power tower 100 have power generation and transmission function simultaneously, changed the transmission mode of the wind energy of the previous cylinder type wind power tower 100 into electric energy through the buried cable transmission to the collection box or the collection station, made full use of the effective space of iron tower 1, avoided the setting of buried cable, saved the project investment, improved the utilization efficiency of iron tower 1.

[0035] In some embodiments, the wind power generation assembly 2 includes a power generation unit 21 and a wind wheel 22.

[0036] The power generation unit 21 is arranged on the iron tower 1. Specifically, as shown in Figure 1 The power generation unit 21 includes a cabin, a transmission device, a transmission, a generator, a yaw device, a control system, and an auxiliary system (a cooling system, a lubricating system, a hydraulic system, and other safety assurance systems). The transmission device, the transmission, the generator, the yaw device, the control system, and the auxiliary system are arranged in the cabin. The various devices cooperate to ensure that the power generation unit 21 generates electricity.

[0037] The wind wheel 22 is rotatably arranged on and connected to the power generation unit 21. The wind wheel 22 can rotate using wind energy. The wind wheel 22 drives the power generation unit 21 to rotate to drive the power generation unit 21 to generate electricity. Specifically, as shown in Figure 1 The wind wheel 22 can be composed of single-blade, double-blade, or three-blade propellers. The material of the blades of the wind wheel 22 requires high strength and light weight. Currently, glass fiber or other composite materials (such as carbon fiber) are used to manufacture the wind wheel 22. The wind wheel 22 is connected to the generator of the power generation unit 21. When the wind blows on the blades, aerodynamic force is generated on the blades to drive the wind wheel 22 to rotate. The wind wheel 22 drives the generator to rotate, and in turn drives the generator to generate electricity. In addition, the cabin is arranged at the upper end of the iron tower 1 and can rotate on the iron tower 1 through the yaw device. Therefore, the direction of the wind wheel 22 can be adjusted according to the change of the wind direction to ensure that the wind wheel 22 always faces the wind direction, thereby maximizing the capture of wind energy.

[0038] In some embodiments, the wind power tower 100 further includes a round steel cylinder 5 extending in the up-down direction and arranged on the iron tower 1 through a flange. The wind power generation assembly 2 is arranged on the iron tower 1 through the round steel cylinder 5. Specifically, as shown in Figure 1As shown, the steel cylinder is a cylinder-shaped high-strength steel material extending in the up-down direction, the lower end of the round steel cylinder 5 is welded with a first flange, the upper end of the tower 1 is welded with a second flange, the first flange and the second flange are connected through fasteners, so that the round steel cylinder 5 is fixed on the tower 1, the nacelle of the wind power generation assembly 2 can be welded on the round steel cylinder 5, so as to support the wind power generation assembly 2, so that it can stably capture wind energy and convert it into electric energy, in addition, the height of the wind power generation assembly 2 can also be adjusted through the round steel cylinder 5 to adapt to different terrain and wind speed conditions.

[0039] In some embodiments, the wind power tower 100 further comprises a plurality of conductor insulators 6, the plurality of conductor insulators 6 are provided on the plurality of cross arms 3 one by one, and the power transmission line 4 is suspended on the cross arm 3 through the conductor insulator 6. Specifically, as shown in Figure 1 and Figure 3 As shown, the number of conductor insulators 6 of each cross arm 3 can be set according to actual conditions, for example, each cross arm 3 is provided with one overhead conductor insulator 6, or each cross arm 3 is provided with two overhead conductor insulators 6, or each cross arm 3 is provided with two strain conductor insulators 6, which play an insulating protection role on the power transmission line 4 through the conductor insulator string.

[0040] In some embodiments, the plurality of cross arms 3 comprises a first cross arm 31, a second cross arm 32 and a third cross arm 33, the first cross arm 31, the second cross arm 32 and the third cross arm 33 are all arranged on the tower 1, the first cross arm 31 and the second cross arm 32 are arranged in the up-down direction, the second cross arm 32 and the third cross arm 33 are arranged in the width direction of the tower 1, the first cross arm 31, the second cross arm 32 and the third cross arm 33 are all arranged below the wind power generation assembly 2 and are arranged in the up-down direction, and the first cross arm 31, the second cross arm 32 and the third cross arm 33 can all suspend the power transmission line 4. Specifically, as shown in Figure 1 As shown, the first cross arm 31, the second cross arm 32 and the third cross arm 33 are all arranged on the tower 1, the first cross arm 31 and the second cross arm 32 are arranged on the left side of the tower 1 and are arranged in the up-down direction, and the third cross arm 33 is arranged on the right side of the tower 1 and is arranged opposite to the second cross arm 32 in the left-right direction, so that three-phase conductors of alternating current are suspended by the first cross arm 31, the second cross arm 32 and the third cross arm 33 respectively, and the first cross arm 31, the second cross arm 32 and the third cross arm 33 are all arranged below the wind power generation assembly 2, preventing the wind power generation assembly 2 from interfering with the first cross arm 31, the second cross arm 32 and the third cross arm 33 when rotating, so that the wind power tower 100 is more reasonable.

[0041] In some embodiments, the tower 1 is a lattice tower, the tower 1 comprises a first section 11 and a second section 12 connected in sequence in the up-down direction, the first section 11 is arranged on the second section 12, the wind power generation assembly 2 is arranged on the first section 11, and the plurality of cross arms 3 are arranged on the second section 12. Specifically, as shown inFigure 1 As shown, the lattice tower is assembled from components such as angle steel, channel steel, I-beams, steel pipes, composite steel sections, and steel-concrete composite structures, connected by bolts and welds. The lattice tower design avoids the disadvantages of steel-tube power generation towers, such as road transport restrictions and high manufacturing costs. It offers advantages such as ease of manufacturing, low investment costs, simple transportation, convenient installation, and minimal impact on the ecological environment. Therefore, using a lattice tower for tower 1 reduces the transportation, processing, manufacturing, and installation costs of wind turbine tower 100. The first section 11, located at the top of tower 1, is the main support for the wind power generation components 2. The second section 12 is located below and connected to the first section 11. The first and second sections 11 together constitute the main structure of tower 1. Multiple crossarms 3 are installed on the second section 12 for suspending power transmission lines 4 and other power facilities, thus making the tower 1 more rationally positioned.

[0042] In some embodiments, the cross-sectional areas of both the first segment 11 and the second segment 12 gradually increase from top to bottom. In a projection plane orthogonal to the width direction of the tower 1, the extension direction of the outer periphery of the first segment 11 intersects the vertical direction at a first angle, and the extension direction of the outer periphery of the second segment 12 intersects the vertical direction at a second angle. The first angle is smaller than the second angle. Specifically, as shown... Figure 1 As shown, the cross-sectional area of ​​the outer periphery of the first segment 11 and the second segment 12 both gradually increase from top to bottom. This gradual increase in cross-sectional area helps to increase the overall load-bearing capacity and stiffness of the tower 1. Furthermore, the extension direction of the outer periphery of the first segment 11 intersects the vertical direction at a first angle, while the extension direction of the outer periphery of the second segment 12 intersects the vertical direction at a second angle. The first angle is smaller than the second angle. In other words, the cross-sectional dimension of the first segment 11 is smaller, ensuring sufficient safety distance between the blades of the wind turbine 22 and the tower body 13, preventing the blades from colliding with the tower body 13 during rotation. The second segment, by increasing its cross-sectional dimension, meets the requirements for load-bearing capacity and stiffness, satisfying the increasing internal forces of the bottom structure. Increasing the cross-sectional dimension improves the structural load-bearing capacity and stiffness, ensuring the overall stability and safety of the tower 1.

[0043] In some embodiments, the wind turbine tower 100 also includes a derrick 7 and a derrick foundation 8.

[0044] The derrick 7 is located inside the iron tower 1 and extends from the bottom to the top of the iron tower 1. Specifically, as follows... Figure 1 As shown, the derrick 7 can be configured as a straight ladder, a spiral ladder, or a climbing machine as needed. The derrick 7 is located inside the iron tower 1 and extends upward from the ground to the top of the iron tower 1, so that maintenance personnel can climb into the wind turbine tower 100 through the derrick 7 to perform operation and maintenance on the wind turbine tower 100.

[0045] The derrick base 8 is adapted to be arranged on the ground, and the derrick 7 is arranged on the derrick base 8, so that the derrick base 8 supports the derrick 7. Specifically, as shown in Figure 1 , the derrick base 8 is arranged on the ground, and the derrick 7 is arranged on the derrick base 8, so that the derrick base 8 provides a mounting base for the derrick 7, prevents the derrick 7 from deforming and subsiding, and prevents the derrick 7 from being damaged.

[0046] In some embodiments, the wind power tower 100 further comprises a walkway and a rest platform 10, the walkway and the rest platform 10 are arranged on the cross arm 3, and the walkway and the rest platform 10 are both in communication with the derrick 7, so that the walkway and the rest platform 10 are accessed through the derrick 7. Specifically, as shown in Figure 1 , the rest platform and the walkway 10 are arranged on the cross arm 3 and are provided with safety facilities such as anti-skid measures and guardrails, and the walkway and the rest platform 10 are both in communication with the derrick 7, so that the walkway and the rest platform 10 are accessed through the derrick 7, and the maintenance personnel move between the cross arms 3 at different heights through the walkway to perform equipment inspection, or rest on the rest platform.

[0047] In some embodiments, the tower 1 comprises a tower body 13 and a plurality of tower legs 14.

[0048] The plurality of tower legs 14 are arranged below the tower body 13 in the circumferential direction of the tower 1, and the wind power tower 100 further comprises a plurality of pile foundations 15, each of which is adapted to be arranged on the ground, and each of the plurality of tower legs 14 is arranged on one of the plurality of pile foundations 15, so that the pile foundation 15 supports the tower 1. Specifically, as shown in Figure 1 and Figure 2 , the number of tower legs 14 is four, the four tower legs 14 are arranged below the tower body 13 in the circumferential direction of the tower 1 at equal intervals, and the number of pile foundations 15 is four, each of the four pile foundations 15 can be arranged on the ground and is firmly connected between the tower leg 14 through a connecting member (such as an anchor bolt, welding, etc.), so as to ensure that the load can be smoothly transmitted, so that the tower 1 is supported by the pile foundation 15, bears the load from the tower leg 14, and transmits it to the soil or rock layer, reduces the settlement and inclination of the tower 1, and improves the stability and safety of the tower 1 structure. In addition, the size of the tower leg 14 can be set according to the actual situation (in other words, the four tower legs 14 can be combined at will, equal length, unequal length, and unequal height can be set according to the terrain), for example, as shown in Figure 1 , when the tower 1 is installed on the flat ground, the sizes of the four tower legs 14 are equal, as shown in Figure 2 , when the tower 1 is installed on the mountain, the tower legs 14 can be set to different sizes according to the height of the mountain, which ensures that the tower 1 is vertically arranged and prevents the tower 1 from tilting, while also reducing the earthwork excavation, preventing damage to the surrounding vegetation, causing water and soil loss or small landslides, reducing vegetation damage and property loss, and ensuring the stability of the tower 1.

[0049] The wind power generation and transmission system of the embodiment of the utility model includes multiple wind power towers 100, a current collecting box or a collecting station (not shown in the schematic diagram).

[0050] The wind power tower 100 is the wind power tower 100 of any one of the above embodiments, and the multiple wind power towers 100 are connected in parallel or in series to form a generation and transmission system, which is connected to the current collecting box or the collecting station so as to transmit the electric energy generated by the generation and transmission system into the current collecting box or the collecting station. Specifically, the multiple wind power towers are arranged in a single row or multiple rows, each row includes multiple wind power towers arranged at intervals and connected in series or in parallel through the transmission line 4, and the multiple rows of wind power towers 100 form the generation and transmission system and are connected to the current collecting box or the collecting station, so that the electric energy generated by the wind power tower is transmitted into the current collecting box or the collecting station.

[0051] The wind power generation and transmission system has the advantages of simple structure, generation and transmission integration, and saving of engineering investment.

[0052] The wind power tower 100 of the embodiment of the utility model can be used in any scene suitable for the construction of a wind power station, especially in a scene with large terrain undulations such as a mountainous area, and a wind farm with large wind turbine scale and relatively regular arrangement (mainly considering that randomly distributed wind turbines will make overhead lines complex and interlaced). The wind power tower 100 of the utility model has both power generation and transmission functions, which changes the transmission mode of the previous cylindrical wind power tower 100 that converts wind energy into electric energy and then transmits the electric energy to a collecting box or a collecting station through a buried cable. The left side (upper part) of the wind power tower 100 is a wind wheel 22, mainly composed of blades, a hub and a shaft; the top is a machine cabin, which includes a transmission device, a speed changer, a generator, a yaw device, a control system, an auxiliary system (cooling system, lubricating system, hydraulic system and other safety guarantee systems), etc.; the right side (lower part) is a transmission system, mainly including a ground wire cross arm 3 and a ground wire or an optical cable, a conductor cross arm 3 and a conductor, a ground wire conductor fastener and an insulator, a vibration and dance prevention device, etc.; and the bottom is a pile foundation 15, which can be a pile foundation 15 (single pile, multiple piles, etc.), an independent foundation, a combined foundation, etc. according to the geological conditions, upper structure load, etc.

[0053] The wind turbine blade in the utility model is located on the upper side of the overhead line and leaves a certain distance, the main purpose is to prevent the influence of the 360-degree rotation of the wind turbine blade on the overhead line, and the power generation capacity of a single wind turbine is less than 35kV, so the ground wire cross arm 3 can generally not be set according to the specification, so as to minimize the overall tower height.

[0054] The wind power tower 100 solves the mode that a single wind turbine needs to transmit electric energy to a power collecting box or a collecting station through a buried cable trench, directly transmits to the power collecting box or the collecting station through an overhead line after power generation, greatly saves engineering investment, including body material investment, construction cost, operation and maintenance cost and various aspects. The lattice type power generation tower has the advantages of easy manufacturing, low investment cost, simple transportation, convenient installation and less influence on ecological environment. The design scheme of the high and low legs of the iron tower 1 can greatly reduce the excavation of earthwork in hilly and mountainous areas, reduce the damage to the surrounding vegetation, and avoid causing soil erosion.

[0055] The wind power tower 100 is provided with a wind wheel 22 on the left side and a power transmission system (ground wire and corresponding cross arm 3) on the right side, which realizes the balance of the overall structure left and right load to a certain extent, and greatly improves the mechanical performance compared with the present situation of single bending of the wind turbine. The wind power tower 100 has higher value in economy, durability and safety.

[0056] The wind power tower 100 can be flexibly selected as a suspension vertical tower, a corner tower, a divergent tower and other power transmission schemes according to the arrangement mode of the wind turbine group, the position of the power collecting box or the collecting station and other factors. For example, a plurality of wind turbines are arranged in a straight line, the power transmission mode of the middle wind turbine can adopt a straight tower, and the wind turbines at both ends can select a corner tower. The corresponding fittings, insulator strings and the like are selected according to the straight tower and strain tower.

[0057] The current output by the wind power tower 100 is alternating current, the power transmission mode of the utility model adopts single loop sending, that is, the upper, middle and lower three layers of wire cross arms 3 are arranged to connect three-phase wires of alternating current, and the top is provided with a ground wire cross arm 3, which can be arranged with ordinary ground wire or optical cable for lightning protection and communication signal transmission. The length of the ground wire cross arm 3 and the vertical spacing between the cross arms 3 can be adjusted according to the electrical wire, the wire gap and the like, which is generally related to factors such as wind speed, icing, altitude, wire type, maintenance mode and the like. The selection of the wire cross section is selected according to the power generation capacity and the transmission capacity of the wind power tower 100, and the type and number of insulators are selected according to pollution, lightning, altitude and the like. Generally, a single loop can meet the transmission demand, and if there are other special considerations, the cross arm 3 can be increased on the tower to set a double loop, a multi-loop and other transmission modes.

[0058] The wind power tower 100 is provided with a derrick 7 or a well shaft, and can be provided with a straight ladder, a rotating ladder, a climbing machine or the like according to actual requirements (a rotating ladder is shown in the schematic view) to facilitate later tower climbing operation of the maintenance personnel. Meanwhile, a walkway and a rest platform 10 are arranged at the position where the derrick 7 or the well shaft intersects with the ground wire cross arm 3, to facilitate the maintenance personnel to access the end of the cross arm 3 to perform maintenance work, and handrails are arranged on both sides of the walkway to play a safety protection role for the tower climbing personnel. When the climbing machine is arranged, a power supply needs to be connected, and the power supply equipment can be arranged in the equipment box at the bottom of the derrick 7 or the well shaft, so that the floor area inside the tower foundation can be fully utilized.

[0059] The top fan cabin is provided with a round steel cylinder 5, the height of the round steel cylinder 5 can be adjusted according to actual requirements, and the round steel cylinder 5 is connected with the entire lattice tower 1 through a high-strength flange. This structure is simple to implement, easy to process, construct and maintain in later operation.

[0060] Because the lattice tower 1 foundation is divided into four independent foundations according to the number of tower legs 14, the overall four-leg stress mode is greatly improved compared with the stress mode of the single-cylinder cantilever end, and a series of construction difficulties in the original mass concrete construction process can be obviously reduced. Meanwhile, the foundation type of the lattice tower 1 can flexibly select an economical and environmentally friendly foundation such as a pile foundation 15, an independent foundation or a combined foundation according to the geological and topographical factors, and the foundation of the wind power tower 100 can not only obviously reduce the material quantity, but also obviously compress the construction difficulty and construction period, and can more easily meet the design and construction quality requirements.

[0061] The lattice tower 1 is composed of angle steel, channel steel, I-beam, steel pipe, combined steel, steel pipe concrete and the like through bolt connection and welding combination, the transition section of the steel cylinder is connected with the lattice tower 1 through a flange, and the lattice tower 1 is connected with the foundation through a pre-buried foundation bolt. The lattice tower 1 and the foundation can be designed as equal-height tower legs 14 or unequal-height tower legs 14 according to the actual topographical requirements, so that the topography can be maximally adapted, and the disturbance and damage to the existing environment can be reduced.

[0062] The wind power tower 100 can avoid the hindrance of the steel cylinder type power generation tower due to road transportation restrictions and high manufacturing cost, has the advantages of easy manufacturing, low investment cost, simple transportation, convenient installation and less influence on the ecological environment.

[0063] The lattice tower 1 of the wind power tower 100 is simple to manufacture (bolted or partially welded in the factory, avoiding the high difficulty of winding and welding of a high and large cylindrical wind power tower 100), consumes less material (fully utilizing the mechanical properties of a profile steel or a combined profile steel), has low cost (low cost of bulk purchase of profile steel in the factory, easy to process), has small component size (small cross section of a single profile steel, enabling on-site splicing and assembly), and is convenient to transport (profile steel can be transported in large quantities at a time without the need for special transportation equipment).

[0064] Compared with the traditional wind power tower 1, the wind power tower 100 adopts a flat leg form. When in a mountainous terrain, due to the relatively large opening of the tower leg 14 or the large size of the cylindrical pile foundation 15, a large amount of earthwork excavation is required considering construction and other requirements, which not only destroys the surrounding vegetation, but also easily causes water and soil loss or small landslides, which may cause greater vegetation damage and property loss, and also poses a safety hazard to the wind power tower 100. If the surplus soil needs to be transported out, the corresponding transportation, land acquisition and other costs will also increase.

[0065] The lattice tower 1 of the wind power tower 100 is provided with a variable slope surface, mainly considering the safety distance between the upper fan blades and the tower body 13. Generally, the cross-sectional size of the upper tower body 13 is small, and the cross-sectional size of the lower tower body 13 can be increased to meet the bearing capacity and stiffness requirements due to the increasing internal force of the structure at the bottom. The final cross-sectional size can be determined by optimizing the slope. The setting of the variable slope point makes the structure more safe and reliable, and can also optimize the steel index of the tower 1, making the fan arrangement more flexible.

[0066] As described above, the wind power tower 100 design scheme has a series of advantages such as excellent mechanical properties, strong structural stability, easy processing and manufacturing, reduced construction difficulty, easy engineering quality guarantee, convenient installation and transportation, shortened construction period, economic and environmental protection, and excellent economic performance.

[0067] As shown above, the wind power tower 100 of the embodiment of the utility model has the following advantages:

[0068] 1) The wind power tower 100 can avoid the obstacles caused by road transportation restrictions and high manufacturing cost of the steel cylinder type power generation tower, has the advantages of easy manufacturing, low investment cost, simple transportation, convenient installation and less impact on the ecological environment.

[0069] 2) Compared with the traditional wind power tower, the wind power tower 100 adopts a flat leg form, which can greatly reduce the excavation of earthwork, reduce the damage to the surrounding vegetation, and avoid causing water and soil loss.

[0070] 3) The foundation of the wind power tower 100 can significantly reduce the amount of material, and the construction difficulty and construction period can be obviously compressed, and the design and construction quality requirements can be easily met.

[0071] 4) The lattice tower 1 of the wind power tower 100 is provided with a variable slope surface, the upper structure has a smaller cross section, the lower structure has a larger cross section, the variable slope point makes the whole structure safer and more reliable, and the steel index of the tower 1 can be optimized, so that the wind turbine is arranged more flexibly.

[0072] 5) The wind power tower 100 can adapt to complex geographical environment and severe weather conditions.

[0073] 6) The wind power tower 100 solves the problem that a single wind turbine needs to be connected to a power collection box or a collection station through a buried cable groove to transmit power, and directly transmits power to the power collection box or the collection station through an overhead line after wind power generation, which greatly saves engineering investment, including the investment of the main body material, construction cost, operation and maintenance cost and the like.

[0074] 7) The wind power tower 100 is provided with a wind wheel 22 on the left side and a power transmission system (ground wire and corresponding cross arm 3) on the right side, so that the balance of the overall structure left and right load is realized to a certain extent, and the mechanical performance is greatly improved compared with the present bending stress characteristics of the single wind turbine, which has high value for the economy, durability and safety of the wind power tower 100.

[0075] 8) The wind power tower 100 can be flexibly selected and arranged as a suspension vertical tower, a corner tower, a divergent tower and the like according to the arrangement mode of the wind turbine group, the position of the power collection box or the collection station and the like, for example, a plurality of wind turbines are arranged in a straight line, the power transmission mode of the middle wind turbine can adopt a straight tower, and the wind turbines at both ends can select a corner tower, and the corresponding fittings, insulator strings and the like are selected according to the straight tower and the strain tower.

[0076] 9) The current output by the wind power tower 100 is alternating current, the power transmission mode of the utility model adopts a single loop transmission, that is, three layers of cross arm 3 are arranged on the top, middle and bottom to connect three-phase conductors, and a ground wire cross arm 3 is arranged on the top to erect ordinary ground wire or optical cable for lightning protection and communication signal transmission. The length of the ground wire cross arm 3 and the vertical spacing between the cross arms 3 can be adjusted according to the electrical conductors, the jumper gap and the like, which are generally related to factors such as wind speed, icing, altitude, conductor type, maintenance mode and the like. The selection of the cross section of the conductor is selected according to the power generation capacity and the transmission capacity of the wind power tower 100, and the type and number of insulators are selected according to pollution, lightning strike, altitude and the like. Generally, a single loop can meet the transmission demand, and if other special considerations are needed, the cross arm 3 can be increased on the tower to set a double loop or a multi-loop transmission mode.

[0077] 10) The wind power tower 100 is provided with a derrick 7 or a shaft, and can be provided with a straight ladder, a rotating ladder, a climbing machine or the like according to actual requirements (a rotating ladder is shown in the schematic view) to facilitate the tower climbing operation of the later operation and maintenance personnel. Meanwhile, a walkway and a rest platform are arranged at the position where the derrick 7 or the shaft intersects with the ground wire cross arm 3, so as to facilitate the maintenance personnel to access the end of the cross arm 3 to perform maintenance work, and handrails are arranged on both sides of the walkway to play a safety protection role for the tower climbing personnel. When the climbing machine is arranged, a power supply needs to be connected, and the power supply equipment can be arranged in the equipment box at the bottom of the derrick 7 or the shaft, so that the floor area inside the tower foundation can be fully utilized.

[0078] 11) The wind fan cabin at the top is provided with a small section of round steel cylinder 5, and the height of the round steel cylinder 5 can be adjusted according to actual requirements. The round steel cylinder 5 is connected with the entire lattice type iron tower 1 through a high-strength flange. This structure is simple to implement, and is convenient for processing, construction and later operation and maintenance.

[0079] 12) Because the foundation of the lattice type iron tower 1 is divided into four independent foundations according to the number of tower legs 14, the overall four-leg stress mode is greatly improved compared with the stress mode of the single-cylinder cantilever end, and a series of construction difficulties in the original large-volume concrete construction process can be obviously reduced. Meanwhile, the foundation type of the iron tower 1 can flexibly select an economical and environment-friendly foundation such as a pile foundation 15, an independent foundation or a combined foundation according to geological conditions and terrain and the like. Compared with the steel cylinder wind fan foundation, the foundation of the wind power tower 100 can obviously reduce the material quantity, and can obviously compress the construction difficulty and the construction period, and can more easily meet the design and construction quality requirements.

[0080] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0081] In addition, the terms "first" and "second" are only for the purpose of description, and cannot 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" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three and the like, unless otherwise specifically limited.

[0082] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0083] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0084] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" 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 application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0085] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A wind turbine tower, characterized in that, The utility model relates to a wind power generation system, which comprises: a tower; a wind power generation assembly arranged on the tower, the wind power generation assembly being capable of generating power by using wind energy; a plurality of cross arms arranged on the tower and spaced apart from the wind power generation assembly in a vertical direction; a power transmission line suspended on the cross arms of the tower, one end of the power transmission line being connected to the wind power generation assembly, and the other end of the power transmission line being adapted to be connected to a wind power tower, a power collection box or a power collection station, so that the power generated by the wind power generation assembly is transmitted to the power collection box or the power collection station through the power transmission line.

2. The windmill tower according to claim 1, characterized in that, The utility model further comprises a round steel cylinder extending in the vertical direction and arranged on the tower by means of flanges, and the wind power generation assembly is arranged on the tower by means of the round steel cylinder.

3. The windmill tower according to claim 1, wherein The utility model further comprises a plurality of wire insulators, each of which is arranged on a corresponding cross arm, and the power transmission line is suspended on the cross arms by means of the wire insulators.

4. The windmill tower according to claim 1, wherein The plurality of cross arms comprise a first cross arm, a second cross arm and a third cross arm, each of which is arranged on the tower, the first cross arm and the second cross arm are spaced apart in the vertical direction, the second cross arm and the third cross arm are spaced apart in a width direction of the tower, each of the first cross arm, the second cross arm and the third cross arm is located below the wind power generation assembly and spaced apart from the wind power generation assembly in the vertical direction, and each of the first cross arm, the second cross arm and the third cross arm is capable of suspending the power transmission line.

5. The windmill tower according to claim 1, wherein The tower is a lattice tower, which comprises a first section and a second section connected in sequence in the vertical direction, the first section is arranged on the second section, the wind power generation assembly is arranged on the first section, and the plurality of cross arms are arranged on the second section.

6. The windmill tower according to claim 5, characterized in that The cross-sectional areas of the first section and the second section gradually increase from top to bottom, in a projection plane perpendicular to the width direction of the tower, the extension direction of the outer circumferential surface of the first section intersects the vertical direction to form a first included angle, and the extension direction of the outer circumferential surface of the second section intersects the vertical direction to form a second included angle, the first included angle being smaller than the second included angle.

7. The windmill tower according to claim 1, wherein The utility model further comprises: a derrick arranged in the tower and extending from the bottom of the tower to the top of the tower; a derrick foundation adapted to be arranged on the ground, and the derrick being arranged on the derrick foundation so that the derrick foundation supports the derrick.

8. The windmill tower according to claim 7, characterized in that The utility model further comprises a walkway and a rest platform arranged on the cross arms and communicating with the derrick, so that the walkway and the rest platform can be accessed through the derrick.

9. The windmill tower according to claim 1, wherein The tower comprises: a tower body and a plurality of tower legs spaced apart in a circumferential direction of the tower and arranged below the tower body, and the wind power tower further comprises a plurality of pile foundations each adapted to be arranged on the ground, and each of the plurality of tower legs is arranged on a corresponding pile foundation so that the pile foundations support the tower.

10. A wind power generation system, characterized by comprising: The utility model relates to a wind power generation system, which comprises: A plurality of wind power towers as claimed in any one of the preceding claims 1-9, the plurality of wind power towers being connected in parallel or in series to form a power generation and transmission system; A power collection box or a power collection station, the power generation and transmission system being connected to the power collection box or the power collection station so that the power generated by the power generation and transmission system is transmitted to the power collection box or the power collection station.

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