Cable-suspended wind power generation device and wind power generation method

Abstract

The invention provides a cable-suspended wind power generation device and a wind power generation method.The cable-suspended wind power generation device comprises a cable and a plurality of generator sets, each generator set comprises at least two vertical-axis wind power generators, each vertical-axis wind power generator comprises a supporting shaft, a wind power blade and a generator, and the generators are installed on the supporting shafts; the wind blades are connected with the generator to drive the generator to generate electricity by wind power; the at least two vertical axis wind driven generators comprise a first wind driven generator and a second wind driven generator, a supporting shaft of the first wind driven generator is connected with a supporting shaft of the second wind driven generator in series, and wind power blades of the first wind driven generator and wind power blades of the second wind driven generator are arranged in different directions; the at least two generator sets are distributed in series, and the opposite supporting shafts of the adjacent generator sets are connected through the mooring rope, so that the technical problems that a wind power generation structure is complex and the installation difficulty is large are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and particularly to a cable-suspended wind power generation device and a wind power generation method. Background Art

[0002] Vertical-axis wind turbines have the advantages of being able to utilize wind power from various directions for power generation, having a simple structure, and not having strict requirements for installation sites. However, their energy conversion efficiency is lower than that of commonly used horizontal-axis wind turbines.

[0003] Vertical-axis wind turbines are usually installed on the top of special iron towers or poles. Their wind-receiving area is limited to the cross-sectional area of the generator fan. If the wind-receiving area is increased, the height of the wind turbine needs to be further increased. However, increasing the height requires enhancing the strength of the corresponding foundation and stress-bearing components, resulting in the disappearance of the advantages of a simple structure and not having strict requirements for installation sites, and the economy and practicability becoming worse.

[0004] The improvement direction of vertical-axis wind turbines is mainly to increase the width in the horizontal direction and increase the height in the vertical direction to greatly enhance the efficiency, but the manufacturing and installation difficulties of the equipment are also continuously increasing.

[0005] Chinese Patent Application for Invention CN101363412A discloses a planetary group paddle-mounted composite wind power generation set, Chinese Utility Model Patent CN208456774U discloses a three-dimensional multi-fan wind turbine, Chinese Utility Model Patent CN201621008U discloses a matrix-type wind power generation device, Chinese Patent Application for Invention CN113638844A discloses a tandem wind turbine, Chinese Patent Application for Invention CN116677557A discloses a wind power generation device, and Chinese Utility Model Patent CN201301776Y discloses an aerial network-suspended wind power generation tower, all of which adopt horizontal-axis wind power generation devices. The above Chinese Patent Applications for Invention CN101363412A, CN113638844A, and Chinese Utility Model Patents CN208456774U, CN201621008U are all combinations in terms of quantity in the traditional horizontal-axis wind turbine manner; Chinese Patent Application for Invention CN116677557A and Chinese Utility Model Patent CN201301776Y adopt a combination of cable suspension and horizontal-axis wind turbines, and their structures are all relatively complex, and the requirements for installation sites are relatively strict. Summary of the Invention

[0006] The purpose of the present invention is to provide a cable-suspended wind power generation device and a wind power generation method to solve the technical problems of relatively complex wind power generation structures and relatively large installation difficulties.

[0007] The above object of the present invention can be achieved by the following technical solutions:

[0008] The present invention provides a cable-suspended wind power generation device, comprising: a cable and a plurality of generator sets,

[0009] The generator set includes at least two vertical-axis wind turbines. Each vertical-axis wind turbine includes a support shaft, wind blades, and a generator. The generator is installed on the support shaft, and the wind blades are connected to the generator to drive the generator to generate electricity by using wind power;

[0010] The at least two vertical-axis wind turbines include a first wind turbine and a second wind turbine,

[0011] The support shaft of the first wind turbine is connected in series with the support shaft of the second wind turbine,

[0012] The wind blades of the first wind turbine and the wind blades of the second wind turbine are arranged in opposite directions;

[0013] At least two of the generator sets are distributed in series, and the opposite support shafts of adjacent generator sets are connected by the cable.

[0014] In a preferred embodiment, the vertical-axis wind turbine includes a blade support shell, which is rotatably installed outside the support shaft, and the wind blades are fixedly connected to the blade support shell.

[0015] In a preferred embodiment, the wind blades extend along the axial direction of the generator and are inclined along the circumferential direction of the generator; and the wind blades of the first wind turbine are inclined in the clockwise direction, and the wind blades of the second wind turbine are inclined in the counterclockwise direction.

[0016] In a preferred embodiment, the blade support shell is cylindrical, and the blade support shell is sleeved outside the support shaft; the wind blades are fixedly connected to the blade support shell through a support frame, and a plurality of the wind blades are distributed around the circumferential direction of the support shaft.

[0017] In a preferred embodiment, the support shaft is provided with a channel, and the cable is threaded through the channel of the support shaft.

[0018] In a preferred embodiment, the channel runs through the support shaft longitudinally, and the cable runs through the channels of the support shafts of the vertical-axis wind turbines in each of the generator sets distributed in series.

[0019] In a preferred embodiment, the generator includes a cable, and the cable is threaded through the channel of the support shaft.

[0020] In a preferred embodiment, the wind turbine blades of the first wind turbine are arranged symmetrically with respect to the wind turbine blades of the second wind turbine in a mirror image.

[0021] The present invention provides a wind power generation method, which uses the above-mentioned cable-suspended wind power generation device, and the two end points of the suspended cable are respectively located on both sides of the air outlet.

[0022] In a preferred embodiment, the connection line of the two end points of the suspended cable is perpendicular to the maximum wind frequency direction of the air outlet.

[0023] In a preferred embodiment, the cable of the cable-suspended wind power generation device is arranged horizontally, and the wind turbine blades of the first wind turbine are arranged symmetrically with respect to the wind turbine blades of the second wind turbine in a mirror image; the cables of multiple cable-suspended wind power generation devices are arranged at different heights to form a flexible wind power generation wall.

[0024] The features and advantages of the present invention are:

[0025] In a location lacking a large-scale wind farm, if there is an available air outlet, the cable-suspended wind power generation device provided by the present invention is adopted. At the air outlet location, a vertical-axis wind turbine is connected and suspended by a cable for power generation. The wind energy of these air outlets can generate considerable electric energy. By utilizing the advantages of the vertical-axis wind turbine, maintaining its miniaturization advantage, and grouping the vertical-axis wind turbines, while generating electricity using winds from various directions, the wind-receiving area is increased, and the cable is used to facilitate installation, reducing the manufacturing and installation difficulties of the wind power generation device; the wind turbine blades of the two vertical-axis wind turbines in the generator set are arranged in opposite directions, which can prevent a large torque from being generated when all the vertical-axis wind turbines rotate in the same direction and damage the cable, ensuring the stability and reliability of the overall structure. Therefore, the present invention has the advantage of a relatively simple structure, reducing the equipment complexity, facilitating installation, being beneficial to reducing investment, and improving economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of the cable-suspended wind power generation device provided by the present invention;

[0028] Figure 2 It is a schematic structural diagram of the generator set in the cable-suspended wind power generation device provided by the present invention;

[0029] Figure 3 is Figure 2 a partially enlarged view;

[0030] Figure 4 is a schematic structural view of a vertical-axis wind turbine in the cable-suspended wind power generation device provided by the present invention;

[0031] Figure 5 is Figure 4 a partially enlarged view at position A in

[0032] Figure 6 is a working schematic view of the wind power generation method provided by the present invention.

[0033] Explanation of the reference numerals in the drawings:

[0034] 1. Wind turbine blade;

[0035] 2. Generator; 21. Stator; 22. Rotor;

[0036] 3. Support shaft; 31. Channel;

[0037] 4. Bearing;

[0038] 5. Blade support shell; 51. Support frame;

[0039] 6. Waterproof and sealing structure;

[0040] 70. Generator set; 700. Vertical-axis wind turbine;

[0041] 71. First wind turbine;

[0042] 72. Second wind turbine;

[0043] 73. Cable; 74. Cable. Specific embodiments

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Solution 1

[0046] The present invention provides a cable-suspended wind power generation device, as shown in Figures 1-5As shown in the figure, it includes a cable 73 and multiple generator sets 70. The generator set 70 includes at least two vertical-axis wind turbines 700. The vertical-axis wind turbine 700 includes a support shaft 3, a wind turbine blade 1, and a generator 2. The generator 2 is installed on the support shaft 3, and the wind turbine blade 1 is connected to the generator 2 to drive the generator 2 to generate electricity by using wind power. At least two vertical-axis wind turbines 700 include a first wind turbine 71 and a second wind turbine 72. The support shaft 3 of the first wind turbine 71 is connected in series with the support shaft 3 of the second wind turbine 72, and the wind turbine blades 1 of the first wind turbine 71 and the second wind turbine 72 are arranged in opposite directions. At least two generator sets 70 are distributed in series, and the opposite support shafts 3 of adjacent generator sets 70 are connected by a cable 73.

[0047] In a location lacking a large-scale wind farm, if there is an available air vent, it is less economical to install a large-scale wind power generation device. By using the cable-suspended wind power generation device provided by the present invention, the vertical-axis wind turbines 700 are connected in series and suspended by the cable 73 at the air vent position to generate electricity. Considerable electric energy can be generated by using the wind energy of these air vents. By taking advantage of the advantages of the vertical-axis wind turbine 700, maintaining its miniaturization advantage, and grouping the vertical-axis wind turbines, while generating electricity using wind from various directions, the wind-receiving area is increased, and due to the convenient installation feature of the cable 73, the manufacturing and installation difficulties of the wind power generation device are reduced. The wind turbine blades 1 of the two vertical-axis wind turbines 700 in the generator set 70 are arranged in opposite directions, which can prevent the cable 73 from being damaged by a large torque when all the vertical-axis wind turbines rotate in the same direction, ensuring the stability and reliability of the overall structure. Therefore, the present invention has the advantage of relatively simple structure, reduces the equipment complexity, is convenient for installation, is beneficial to reducing investment, and improves the economy.

[0048] The cable-suspended wind power generation device can utilize the suitable terrain of the air vent to install the cable 73, and each generator set 70 is suspended. Considerable electric energy can be generated by using the wind energy of the air vent. For example, when an air vent is formed between two buildings or structures, the cable 73 can be suspended between the two buildings or structures, and the generator sets 70 are connected in series and suspended by the cable 73 to generate electricity. The support shaft 3 of the vertical-axis wind turbine 700 is arranged substantially horizontally.

[0049] As Figure 2 and Figure 4 As shown in the figure, the vertical-axis wind turbine 700 includes a blade support shell 5. The blade support shell 5 is rotatably installed outside the support shaft 3, and the wind turbine blade 1 is fixedly connected to the blade support shell 5. The wind turbine blade 1 drives the blade support shell 5 to rotate together under the action of wind. Specifically, as Figure 3As shown, the generator 2 includes a stator 21 and a rotor 22. The stator 21 is mounted on the support shaft 3, and the rotor 22 is connected to the blade support housing 5. The wind turbine blade 1 drives the rotor 22 to rotate through the blade support housing 5 for power generation.

[0050] Furthermore, the wind turbine blade 1 extends along the axial direction of the generator 2 and is inclined along the circumferential direction of the generator 2; and, as Figure 2 shown, the wind turbine blade 1 of the first vertical-axis wind turbine 71 is inclined in the clockwise direction, and the wind turbine blade 1 of the second vertical-axis wind turbine 72 is inclined in the counterclockwise direction. The vertical-axis wind turbine 700 has the ability to generate electricity using multiple wind directions. When two vertical-axis wind turbines 700 in the same generator set 70 rotate simultaneously, since they extend and incline in opposite directions, the generated torques can be cancelled out, thereby reducing the torque on the cable 73 when the vertical-axis wind turbines rotate in the same direction, which is beneficial to protecting the cable 73 and increasing its service life. Preferably, the width of the wind turbine blade 1 also varies along the axial direction, and the width of the wind turbine blade 1 of the first vertical-axis wind turbine 71 is smaller at the end close to the second vertical-axis wind turbine 72, and the width of the wind turbine blade 1 of the second vertical-axis wind turbine 72 is also smaller at the end close to the first vertical-axis wind turbine 71.

[0051] Furthermore, the blade support housing 5 is in a cylindrical shape and is sleeved outside the support shaft 3; the wind turbine blade 1 is fixedly connected to the blade support housing 5 through the support frame 51, and a plurality of wind turbine blades 1 are circumferentially distributed around the support shaft 3. The support shaft 3 plays a role in supporting the entire vertical-axis wind turbine 700. Under the action of wind, the plurality of wind turbine blades 1 drive the blade support housing 5 and the rotor 22 to rotate relative to the support shaft 3 together, which is beneficial to ensuring that the structure of the vertical-axis wind turbine 700 is more compact and stable, and can generate electricity using wind from various directions. As Figure 3 and Figure 5 shown, the blade support housing 5 is connected to the support shaft 3 through the bearing 4.

[0052] In an embodiment, the support shaft 3 is provided with a channel 31, and the cable 73 is threaded through the channel 31 of the support shaft 3, thereby connecting the various generator sets 70 in series, and facilitating the installation of the cable-suspended wind power generation device provided by the present invention at the air inlet, for example, facilitating installation between buildings and mountains.

[0053] The wind turbine blade 1 of the vertical-axis wind turbine 700 rotates around its support shaft 3; the support shafts 3 of the respective vertical-axis wind turbines 700 are arranged in series, and the support shafts 3 are connected end to end, that is: as Figure 1 and Figure 2 shown, the first end of the support shaft 3 of the vertical-axis wind turbine 700 is connected to the support shaft 3 of the adjacent vertical-axis wind turbine 700, and the second end of this support shaft 3 is connected to the support shaft 3 of another adjacent vertical-axis wind turbine 700.

[0054] In one embodiment, the cable 73 can be divided into multiple segments or be a single whole piece. The adjacent generator sets 70 can be connected by the cable 73. The end of the cable that suspends the wind power generation device can be fixed between buildings through the cable 73. The support shafts 3 of the first wind turbine 71 and the second wind turbine 72 in the generator set 70 can be directly connected or connected by the cable 73.

[0055] Furthermore, the channel 31 runs longitudinally through the support shaft 3 along the support shaft 3. The cable 73 runs through the channels 31 of the support shafts 3 of each vertical-axis wind turbine 700 in the series-distributed generator sets 70. The support shafts 3 of the first wind turbine 71 and the second wind turbine 72 in the generator set 70 are connected by the cable 73, and the adjacent generator sets 70 are also connected by the cable 73. It is possible to connect all the vertically-axis wind turbines 700 in series distribution with a single cable 73, which is convenient for installation and can ensure the reliability of the connection. Preferably, as Figure 3 and Figure 5 shown, the support shaft 3 is a hollow shaft; the support shafts 3 of adjacent vertical-axis wind turbines 700 can be fixed to the cable 73 at a certain interval.

[0056] The generator 2 includes a cable 74. As Figure 2 and Figure 3 shown, the cable 74 is threaded through the channel 31 of the support shaft 3, making the structure of the cable that suspends the wind power generation device more compact, convenient for installation, and ensuring the safety of electrical components. The cable 74 can be arranged by winding around the cable 73. A waterproof sealing structure 6 is provided between the outer wall of the support shaft 3 and the inner wall of the blade support shell 5. Preferably, waterproof sealing structures 6 are provided at both ends of the support shaft 3.

[0057] In one embodiment, the wind turbine blades 1 of the first wind turbine 71 and the wind turbine blades 1 of the second wind turbine 72 are arranged in mirror symmetry, so that the two vertical-axis wind turbines 700 in the generator set 70 are installed in mirror images, preventing a large torque from being generated when all the vertical-axis wind turbines rotate in the same direction and damaging the cable 73. Preferably, the generator 2 in the first wind turbine 71 in the generator set 70 is arranged close to the second wind turbine 72, and the generator 2 in the second wind turbine 72 is arranged close to the first wind turbine 71.

[0058] The cable-suspended wind power generation device provided by the present invention can be installed in a manner where the cable 73 is horizontally suspended, and multiple vertical-axis wind turbines 700 are connected in series through the cable 73. The two ends of the cable 73 can be respectively fixed to buildings or mountains on both sides of the air outlet.

[0059] In relatively remote areas, the transportation conditions are poor, and the installation of large-scale wind power generation equipment is restricted. The present invention uses a cable 73 to serially connect and suspend a vertical-axis wind turbine 700, making full use of the advantages of the miniaturization of the vertical-axis wind turbine 700. Without the need for large-scale units and the transportation and installation of structures, it can be free from the restriction of transportation conditions.

[0060] Solution 2

[0061] The present invention provides a wind power generation method, which uses the above-mentioned cable-suspended wind power generation device. The two end points of the suspended cable 73 are respectively located on both sides of the wind gap. The vertical-axis wind turbines 700 are grouped. While generating electricity using winds from various directions, the wind-receiving area is increased. And by taking advantage of the easy installation feature of the cable 73, the manufacturing and installation difficulties of the wind power generation device are reduced; the wind turbine blades 1 of the two vertical-axis wind turbines 700 in the generator set 70 are arranged in opposite directions, which can prevent the generation of a large torque when all the vertical-axis wind turbines rotate in the same direction and damage the cable 73, ensuring the stability and reliability of the overall structure, reducing the equipment complexity, facilitating installation, being beneficial to reducing investment, and improving the economy.

[0062] Furthermore, the connection line of the two end points of the suspended cable 73 is perpendicular to the maximum wind frequency direction of the wind gap.

[0063] In an embodiment, as Figure 6 shown, the cable 73 of the cable-suspended wind power generation device is arranged horizontally, and the wind turbine blades 1 of the first wind turbine 71 and the second wind turbine 72 are arranged in a mirror-symmetrical manner. The cables 73 of multiple cable-suspended wind power generation devices are arranged at different heights to form a flexible wind power generation wall, which is beneficial to making full use of the wind and improving the power generation efficiency. Preferably, the two ends of the same cable 73 are approximately at the same height, and the cable 73 is approximately in an arc shape under the action of gravity.

[0064] The wind power generation method provided by the present invention has the following characteristics: (1) Modify the structure of the vertical-axis wind turbine 700 so that while still being able to generate electricity using winds from various directions, it can be installed in a horizontal suspension manner using the cable 73, and at the same time, multiple vertical-axis wind turbines 700 can be serially connected through the cable 73; (2) Serially connect multiple vertical-axis wind turbines 700 with the cable 73 and group-hang them at a wind gap with strong wind (such as a mountain pass or between buildings) to generate electricity, making full use of the advantages of the miniaturization of the vertical-axis wind turbine 700. By taking advantage of the easy installation feature of the cable 73, the vertical-axis wind turbines are grouped, increasing the wind-receiving area without increasing the manufacturing and installation difficulties; (3) Considering factors such as the height of the wind gap and the space requirements above and below, multiple cables 73 can be suspended at different heights, and multiple generator sets 70 can be suspended with multiple cables 73 at different heights to form a flexible wind power generation wall to make full use of the wind in the wind gap.

[0065] The above are only several embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention based on the content disclosed in the application documents.

Claims

1. A cable-suspended wind power generation device, characterized in that, it includes: a cable and a plurality of generator sets, the generator set includes at least two vertical-axis wind turbines, the vertical-axis wind turbine includes a support shaft, wind turbine blades and a generator, the generator is installed on the support shaft, and the wind turbine blades are connected to the generator to drive the generator to generate electricity by using wind power; the at least two vertical-axis wind turbines include a first wind turbine and a second wind turbine, the support shaft of the first wind turbine is connected in series with the support shaft of the second wind turbine, the wind turbine blades of the first wind turbine and the wind turbine blades of the second wind turbine are arranged in opposite directions; at least two of the generator sets are distributed in series, and the opposite support shafts of adjacent generator sets are connected by the cable.

2. The cable-suspended wind power generation device according to claim 1, characterized in that, the vertical-axis wind turbine includes a blade support shell, the blade support shell is rotatably installed outside the support shaft, and the wind turbine blades are fixedly connected to the blade support shell.

3. The cable-suspended wind power generation device according to claim 2, characterized in that, the wind turbine blades extend along the axial direction of the generator and are inclined along the circumferential direction of the generator; moreover, the wind turbine blades of the first wind turbine are inclined in the clockwise direction, and the wind turbine blades of the second wind turbine are inclined in the counterclockwise direction.

4. The cable-suspended wind power generation device according to claim 3, characterized in that, the blade support shell is in a cylindrical shape, and the blade support shell is sleeved outside the support shaft; the wind turbine blades are fixedly connected to the blade support shell through a support frame, and a plurality of the wind turbine blades are distributed around the circumferential direction of the support shaft.

5. The cable-suspended wind power generation device according to claim 4, characterized in that, the support shaft is provided with a channel, and the cable is threaded through the channel of the support shaft.

6. The cable-suspended wind power generation device according to claim 5, characterized in that, the channel longitudinally penetrates the support shaft along the longitudinal direction of the support shaft, the cable penetrates the channels of the support shafts of each vertical-axis wind turbine in the generator sets distributed in series.

7. The cable-suspended wind power generation device according to claim 5, characterized in that, the generator includes a cable, and the cable is threaded through the channel of the support shaft.

8. The cable-suspended wind power generation device according to claim 3, characterized in that, the wind turbine blades of the first wind turbine and the wind turbine blades of the second wind turbine are arranged in mirror symmetry.

9. A wind power generation method, characterized in that, using the cable-suspended wind power generation device according to any one of claims 1-8, and the two end points of the suspended cable are respectively located on both sides of the air outlet.

10. The wind power generation method according to claim 9, characterized in that, the connection line of the two end points of the suspended cable is perpendicular to the maximum wind frequency direction of the air outlet.

11. The wind power generation method according to claim 9, characterized in that, The cable of the cable-suspended wind power generation device is arranged horizontally. The wind turbine blades of the first wind turbine are arranged symmetrically with respect to the wind turbine blades of the second wind turbine in a mirror image. The cables of multiple cable-suspended wind power generation devices are arranged at different heights to form a flexible wind power generation wall.

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