Multi-impeller floating fan with wind vane effect

Abstract

The invention relates to a multi-impeller floating fan with a wind vane effect. The multi-impeller floating fan comprises a single pile, the single pile is a cylinder, a lantern ring is arranged on the single pile in a sleeving mode, the outer circle surface of the lantern ring is evenly and fixedly connected with a plurality of supporting shafts, the ends, away from the lantern ring, of the supporting shafts are fans, the single pile is evenly provided with a plurality of supporting columns, and the ends, away from the single pile, of the supporting columns are connected with connecting rings; compared with the prior art, the multi-impeller ocean floating fan solves the problems that an existing multi-impeller floating fan is single in wind area, the wind energy capturing efficiency of an existing single-impeller floating fan is low, and the multi-impeller fan is safe and reliable in operation.

Description

Technical Field

[0001] The invention relates to the technical field of ships and marine engineering, and in particular to a multi-impeller floating fan with a weather vane effect. Background Art

[0002] Existing offshore wind power has major defects in capturing wind energy efficiency, which is generally solved by increasing the blade radius to increase the wind receiving area. However, the increase in blade radius not only increases the difficulty of installation, but also poses a great challenge to the material properties of the blade itself, thereby greatly increasing the cost of early development. At the same time, the uncertain operating environment of the ocean poses great challenges to wind turbines with large-radius blades, especially floating wind turbines that will operate in the deep sea in the future, which has an adverse impact on the economic efficiency of later operations. In recent years, multi-impeller wind turbines have gradually become the mainstream of research. Although the energy capture efficiency problem of large-radius blades can be solved by multi-impeller offshore floating wind turbines, the safety and reliability of the impeller itself also face greater challenges compared to single-impeller wind turbines. Existing wind farms, whether operating on land or in the sea, have experienced accidents of wind turbine shaft fire and explosion. For multi-impeller wind turbines, once one of the impellers has an accident, the multi-impeller wind turbine will have an accident, and the loss is also many times that of a single-impeller wind turbine, and the maintenance cost is also many times that of a single-impeller wind turbine. Summary of the invention

[0003] In view of the current problems that the wind energy capture efficiency of offshore floating wind turbines is relatively low, and the multi-impeller wind turbine has a large difference in the power generation of the multi-impeller main engine, which leads to the collapse of the power grid merger and greatly increases the probability of accidents, a multi-impeller floating wind turbine with a weather vane effect is proposed.

[0004] The technical solution of the present invention is: a multi-impeller floating wind turbine with a weather vane effect, comprising a wind turbine, a single pile, a pillar, a connecting ring, a supporting shaft, and a collar, wherein the wind turbine comprises wind turbine blades and a wind turbine shaft, the number of the wind turbine shafts is not less than 3, and each wind turbine shaft is connected to 3 wind turbine blades, the single pile is a cylinder, the collar is sleeved on the single pile, the outer circular surface of the collar is evenly fixedly connected to a plurality of supporting shafts, the end of the supporting shaft away from the collar is the wind turbine, the single pile is evenly provided with a plurality of pillars, and the end of the pillar away from the single pile is connected to the connecting ring.

[0005] Preferably, the number of the fans does not exceed 5, they are fixedly connected to the support shaft, and are evenly arranged along the circumference of the connecting ring.

[0006] Preferably, the number of the fans is inversely proportional to the diameter of the fan blades;

[0007] In sea areas where the wind direction is relatively random, the 5 wind turbine solutions are adopted, and the blade diameter of the solution is relatively small; in sea areas where the wind direction is relatively stable and the wind force is relatively strong, the 3 wind turbine solutions are adopted, and the blade diameter of the solution is relatively large.

[0008] Preferably, the positions of the pillars and the fans are spaced apart from each other in the horizontal direction, the angles between the pillars and adjacent fans are the same, and the collar is fixedly connected to the single pile.

[0009] Preferably, a gear is provided inside the fan shaft, a nacelle is provided on the top of the pillar, the connecting ring is divided into three sections through the nacelle, and the three sections of the connecting ring are discontinuous, a rotating shaft is provided in the nacelle, the rotating shaft is connected to a conveyor belt, the conveyor belt is connected to a rack, the gear and the rack are meshed and connected, the rack is located and suspended in the connecting ring, both ends of the rack are connected to the nacelle, a transmission is provided in the nacelle, and the transmission is connected to a generator, and the generator relies on the gear rack transmission system on both sides of the nacelle to provide power for power generation.

[0010] Preferably, a conveyor belt is provided inside the connecting ring, the rack is connected to the surface of the conveyor belt, the conveyor belt circulates in the single connecting ring, the two ends of the conveyor belt are fixed by a rotating shaft, the rotating shaft is fixed in the cabin, a solid material with a lower density is provided inside the rack, and the surface is a steel plate, the steel plate and the solid material are riveted by bolts, and the highest point of the bolt does not exceed the steel plate.

[0011] Preferably, the conveyor belt is provided with vertical support through the roller in the middle, and a fixed limiting device is arranged around the conveyor belt.

[0012] Preferably, the wind turbine turns on a survival mode under extreme sea conditions, in which the collar rotates on the monopile, and the support shaft and the wind turbine connected to the support shaft rotate freely around the monopile.

[0013] Preferably, the in-nacelle generator is disconnected from the gear transmission system in a survival mode under extreme sea conditions.

[0014] Preferably, the final state of the wind turbine is related to the wind direction, and the three wind turbines are respectively located on the leeward side and on an inclined plane symmetrical with respect to the wind direction.

[0015] Preferably, when the fan rotates with the single pile as the center through the collar, the rotation angle of the fan does not exceed the angle between adjacent pillars.

[0016] The beneficial effects of the present invention are as follows: compared with the prior art, the multi-impeller ocean floating wind turbine provided by the present invention solves the problems of the single wind receiving area of ​​the existing multi-impeller floating wind turbine, the low wind energy capture efficiency of the existing single-impeller floating wind turbine, and the safety and reliability of the operation of the multi-impeller wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the multi-impeller floating fan with a weather vane effect of the present invention;

[0018] Figure 2 A top view of a multi-impeller floating wind turbine with a weather vane effect according to the present invention;

[0019] Figure 3 It is a plane schematic diagram of the rack of the connecting ring of the present invention;

[0020] Figure 4 Schematic diagram of the connection between the fan shaft and the connecting ring of the present invention, (a) is a front view, (b) is a side view;

[0021] Figure 5 It is a schematic diagram of the connection between the connecting ring and the support pillar of the present invention;

[0022] Figure 6 It is a schematic diagram of the normal sea condition operation mode of the present invention;

[0023] Figure 7 It is a schematic diagram of the high sea state operation mode of the present invention.

[0024] In the figure, the component names corresponding to the reference numerals are as follows:

[0025] 1. Fan; 11. Fan blades; 12. Fan shaft; 2. Monopile; 3. Pillar; 4. Connecting ring; 5. Support shaft; 6. Ring; 7. Cabin 7. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0027] refer to Figure 1 , 2As shown, the present invention provides a multi-impeller floating wind turbine with a weather vane effect, comprising a single pile 2, the single pile 2 is a cylinder, a collar 6 is rotatably sleeved on the single pile 2, the wind turbine blades 11 are driven by the weather vane effect to rotate around the single pile 2, the outer circumferential surface of the collar 6 is evenly fixedly connected with a plurality of support shafts 5, the support shafts 5 are placed horizontally, one end of the support shaft 5 away from the collar 6 is connected to the wind turbine 1, and in the bottom side direction of the collar 6, the single pile 2 is evenly provided with a plurality of pillars 3, and a certain angle is maintained between the single pile 2 and the pillars 3, and one end of the pillars 3 away from the single pile 2 is connected to the bottom surface of the connecting ring 4;

[0028] The fan 1 includes fan blades 11 and a fan shaft 12. The fan shafts 12 are not less than 3, meeting the requirements of large megawatt-class fans. The number of fan blades 11 on a single fan shaft is 3.

[0029] The number of wind turbines 1 does not exceed 5 to ensure the circumferential arrangement requirements of the connecting ring 4, or to avoid the poor economy of the floating wind turbine due to too small blade diameter. The more wind turbines 1 there are, the smaller the diameter of the wind turbine 1 is. In sea areas with relatively random wind directions, the 5 wind turbines 1 scheme is adopted, and the blade diameter of the scheme is relatively small. In sea areas with relatively stable wind directions and relatively strong winds, the 3 wind turbines 1 scheme is adopted, and the blade diameter of the scheme is relatively large.

[0030] The positions of the pillars 3 and the fans 1 are spaced apart from each other in the horizontal direction, and the angle between each pillar 3 and the adjacent fan 1 is the same, so the number of fans 1 is the same as the number of the pillars 3;

[0031] Specifically, a cabin 7 is provided on the top of the pillar 3, and the cabin 7 is provided with a generator, a transmission, and a high-speed rotating shaft;

[0032] refer to Figure 3 , 4 The fan shaft 12 is provided with a gear inside, the connecting ring 4 is provided with a rack, the gear is meshed with the rack, the rack is located in and suspended in the connecting ring 4, the rack is connected to the conveyor belt, the conveyor belt circulates in the single connecting ring 4, the rack is provided with a solid material with a low density, the surface is a steel plate, the steel plate and the solid material are riveted by bolts, and the highest point of the bolt does not exceed the steel plate, the two ends of the conveyor belt are fixed by a rotating shaft, the rotating shaft is fixed in the nacelle 7, the connecting ring 4 is divided into 3 sections by the nacelle 7, and the 3 sections of the connecting ring 4 are discontinuous, a transmission is provided in the nacelle 7, and the transmission is connected to a generator, and the generator relies on the gear rack transmission system on both sides of the nacelle 7 to provide power for power generation;

[0033] refer to Figure 4As shown, a roller is arranged in the middle of the conveyor belt, and a fixed limiting device is arranged around the roller. The roller provides vertical support for the conveyor belt and does not hinder the transmission of the conveyor belt;

[0034] refer to Figure 5 As shown, a nacelle 7 is provided at the top of the connection position between the support 3 and the connection ring 4. The nacelle 7 is provided with a gear transmission system, and the racks on both sides of the gear transmission system are not in the same plane;

[0035] refer to Figure 6 , 7 As shown, the normal sea condition operation mode: when the wind turbine 1 is operating stably, the wind turbine 1 is in a self-rotating state, the support shaft 5 provides fixed support for the wind turbine shaft 12, and the power is transmitted to the rack of the connecting ring 4 through the rotation of the wind turbine blades 11.

[0036] High sea condition operation mode: When the survival mode is turned on under extreme sea conditions with strong wind, the wind turbine 1 rotates along the circumferential motion of the connecting ring 4, the support shaft 5 provides a limit support for the wind turbine shaft 12, the collar 6 rotates on the monopile 2, the support shaft 5 rotates freely around the monopile 2, and the wind turbine 1 connected to the support shaft 5 rotates around the monopile 2 under the weather vane effect, the wind turbine shaft 12 drives the rack to slide on the connecting ring 4, and the sliding of the rack causes the transmission 7 to rotate along the output shaft of the transmission 7, and the nacelle 7. The generator in the generator is disconnected from the gear transmission system in the survival mode under extreme sea conditions, and because the fan shaft 12 is fixedly connected to the collar 6 through the support shaft 5, the fan 1 rotates along the monopile 2 through the collar 6. The final state of the fan 1 is related to the wind direction. The three fan positions are respectively on the leeward side and on the inclined plane symmetrical with the wind direction. Due to the fixation of the support shaft 5, the fan shaft 12 moves in equal phases. In the case of a large fan 1, it can always be at the safest phase angle due to the wind vane effect.

[0037] Due to the high wind force in the high sea state operation mode, the wind turbine 1 rotates along the single pile 2 through the collar 6, and the rotation angle of the wind turbine 1 does not exceed the angle between the adjacent pillars 3. The rotation power of the wind turbine 1 comes from the unbalanced torque on the wind turbine blades 11, and the unbalanced torque comes from the wind direction and wind force;

[0038] The beneficial effects are as follows: compared with the prior art, the multi-impeller ocean floating wind turbine provided by the present invention solves the problems of the single wind receiving area of ​​the existing multi-impeller floating wind turbine, the low wind energy capture efficiency of the existing single-impeller floating wind turbine, and the safety and reliability of the operation of the multi-impeller wind turbine.

[0039] It should be noted that the orientations or positional relationships indicated by the above-mentioned terms "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. "Multiple" means two or more. "Installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection.

[0040] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multi-impeller floating wind turbine with a weather vane effect, characterized in that: The invention comprises a fan (1), a single pile (2), a pillar (3), a connecting ring (4), a supporting shaft (5), and a collar (6). The fan (1) comprises fan blades (11) and a fan rotating shaft (12). The number of the fan rotating shafts (12) is not less than 3, and each fan rotating shaft (12) is connected to 3 fan blades (11). The single pile (2) is a cylinder. The collar (6) is sleeved on the single pile (2). The outer circular surface of the collar (6) is evenly fixedly connected to a plurality of supporting shafts (5). The end of the supporting shaft (5) away from the collar (6) is the fan (1). The single pile (2) is evenly provided with a plurality of pillars (3). The end of the pillar (3) away from the single pile (2) is connected to the connecting ring (4).

2. The multi-impeller floating wind turbine with a weather vane effect according to claim 1, characterized in that: The number of the fans (1) does not exceed 5, they are fixedly connected to the support shaft (5), and are evenly arranged along the circumference of the connecting ring (4).

3. The multi-impeller floating wind turbine with a weather vane effect according to claim 2, characterized in that: The number of the fans (1) is inversely proportional to the diameter of the fan blades (11); In sea areas where the wind direction is relatively random, the five wind turbines (1) are used, and the blade diameter of the solution is relatively small; in sea areas where the wind direction is relatively stable and the wind force is relatively strong, the three wind turbines (1) are used, and the blade diameter of the solution is relatively large.

4. The multi-impeller floating wind turbine with a weather vane effect according to claim 1, characterized in that: The support pillars (3) and the fans (1) are arranged at intervals from each other in the horizontal direction, the angles between the support pillars (3) and adjacent fans (1) are the same, and the collar (6) is fixedly connected to the single pile (2).

5. The multi-impeller floating wind turbine with a weather vane effect according to claim 1, characterized in that: A nacelle (7) is provided on the top of the support (3); the connecting ring (4) is evenly divided into three sections by the nacelle (7); and the three sections of the connecting ring (4) are discontinuous; a gear is provided inside the fan shaft (12); the gear is meshed with a rack; a transmission is provided inside the nacelle (7); and the transmission is connected to a generator; and the generator simultaneously relies on a gear and rack transmission system on both sides of the nacelle (7) to provide power for power generation.

6. The multi-impeller floating wind turbine with a weather vane effect according to claim 5, characterized in that: A conveyor belt is provided inside the connecting ring (4), the rack is connected to the surface of the conveyor belt, the conveyor belt circulates in the single connecting ring (4), the two ends of the conveyor belt are fixed by a rotating shaft, the rotating shaft is fixed in the cabin (7), a solid material with a low density is provided inside the rack, and the surface is a steel plate, the steel plate and the solid material are riveted by bolts, and the highest point of the bolt does not exceed the steel plate.

7. The multi-impeller floating wind turbine with a weather vane effect according to claim 1, characterized in that: The wind turbine (1) starts a survival mode under extreme sea conditions. In the survival mode, the collar (6) rotates on the monopile (2), and the support shaft (5) and the wind turbine (1) connected to the support shaft (5) rotate freely around the monopile (2).

8. The multi-impeller floating wind turbine with a weather vane effect according to claim 7, characterized in that: The generator in the nacelle (7) is disconnected from the gear transmission system in a survival mode under extreme sea conditions.

9. The multi-impeller floating wind turbine with a weather vane effect according to claim 7, characterized in that: The final state of the fan (1) is related to the wind direction, and the three fan positions are respectively located on the leeward side and on an inclined plane symmetrical with the wind direction.

10. The multi-impeller floating wind turbine with a weather vane effect according to claim 1, characterized in that: When the fan (1) rotates with the single pile (2) as the center through the collar (6), the rotation angle of the fan (1) does not exceed the angle between adjacent pillars (3).

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