CN218376720U - Novel wind power generation device of relative rotation double-impeller yaw-free motor - Google Patents

Abstract

The utility model discloses a novel wind power generation device with relatively rotating double impellers without a yaw motor, comprising: a foundation, a tower column, a Y-shaped support structure, a yaw rotation mechanism, two impellers arranged in the upwind direction or downwind direction and Two nacelles; the tower is set on the foundation, and the Y-shaped support structure is installed on the top of the tower; the yaw rotation mechanism is set at the bottom of the Y-shaped support structure, and the yaw rotation mechanism can drive the Y-shaped support by controlling the thrust of the double impellers The structure rotates; the two nacelles are installed on the top of the Y-shaped supporting structure, and the output end of each nacelle is equipped with an impeller, and the two impellers rotate in opposite directions; the Y-shaped supporting structure includes a vertically arranged tower main rod, a tower Both sides of the top of the main pole protrude outward to form two structural beams, and the tops of the two structural beams are connected by a balance steel cable. The utility model is provided with two energy capture mechanisms, with high power, high efficiency, low center of gravity, low cost, easy installation and operation and maintenance.

Description

A new type of wind power generation device with relatively rotating double impellers without yaw motor

technical field

The utility model relates to the technical field of wind power generation, in particular to a novel wind power generation device with relatively rotating double impellers and no yaw motor.

Background technique

my country is rich in wind energy resources, and the wind energy reserves that can be developed and utilized are about 1 billion kW, of which, the wind energy reserves on land are about 253 million kW (calculated from the height of 10m above the ground on land), and the wind energy reserves that can be developed and utilized at sea are about 750 million kW. A total of 1 billion kW. At the end of 2003, the national installed capacity of electric power was about 567 million kW.

Wind is one of the energy sources without pollution. And it is inexhaustible and inexhaustible. For coastal islands, grasslands, pastoral areas, mountainous and plateau areas that lack water, fuel, and inconvenient transportation, the use of wind power generation according to local conditions is very suitable and promising. Offshore wind power is an important field of renewable energy development, an important force to promote wind power technology progress and industrial upgrading, and an important measure to promote energy structure adjustment. my country is rich in offshore wind energy resources, and accelerating the construction of offshore wind power projects is of great significance for promoting the control of atmospheric smog in coastal areas, adjusting energy structure and transforming economic development mode

The impeller of the wind turbine is connected to the main shaft and drives the generator rotor through the gearbox. The main shaft is connected to the nacelle through the bearing and the base, and the tower is connected to the nacelle and the foundation platform. The yaw movement of the wind turbine refers to the movement of the nacelle of the wind turbine around the direction perpendicular to the foundation platform. By controlling the yaw movement of the wind turbine, the direction of the impeller of the wind turbine relative to the wind speed can be changed. Generally, the smaller the angle of the impeller of the wind turbine relative to the wind speed, the greater the power generation of the wind turbine. The goal of wind turbine yaw control is to minimize the angle of the rotor relative to the wind speed. The conventional yaw control is to use the yaw motor to drive the yaw movement process, and set the start and stop of the yaw motor according to the wind direction information measured by the wind direction sensor, so as to adjust the angle of the impeller relative to the wind speed.

Existing wind power generation devices use a single impeller to drive a single generator to generate power, which has low power and low utilization rate of wind energy. Therefore, those skilled in the art provide a new type of wind power generation device with relatively rotating double impellers and no yaw motors to solve the problems raised in the above-mentioned background technology.

Utility model content

The utility model provides a new type of wind power generation device with two energy capture mechanisms, a relatively rotating double-impeller non-yaw motor with high power, high efficiency, low center of gravity, low cost, easy installation and operation and maintenance.

In order to achieve the above object, the utility model provides the following technical solutions:

The utility model relates to a novel wind power generation device with relatively rotating double impellers and no yaw motor. The device includes:

a foundation, said foundation being a floating foundation or a fixed foundation;

a pylon, the pylon is set on the foundation;

Y-shaped support structure, the Y-shaped support structure is installed on the top of the tower column;

A yaw rotation mechanism, the yaw rotation mechanism is arranged at the bottom of the Y-shaped support structure, and the yaw rotation mechanism can drive the Y-shaped support structure to rotate;

Two nacelles, the two nacelles are respectively installed on the top of the Y-shaped support structure, the output end of each nacelle is provided with an impeller, the impellers on the two nacelles rotate in opposite directions, and the two impellers are arranged on One side of the Y-shaped support structure is located in the upwind or downwind direction of the Y-shaped support structure. When the two impellers are located in the upwind direction, they are set on the front side of the Y-shaped support structure, and the wind blows to the two impellers first; When the two leaves 1 are located in the downwind direction, they are arranged on the rear side of the Y-shaped support structure, and the wind blows to the Y-shaped support structure first;

The Y-shaped support structure includes a vertically arranged tower main rod, and the two sides of the top of the tower main rod protrude outward to form two structural beams, and the tops of the two structural beams are connected by a balance steel cable.

Further, the connection between the balance steel cable and the structural beam is located at a quarter of the top of the structural beam.

Further, the distance between the two nacelles is greater than 1.7 times the length of the blades on the impeller.

Further, the main pole of the tower and the two structural beams are integrally formed.

Further, an operation and maintenance escalator is provided on the sides of the two structural beams that are close to each other.

Further, the top of the operation and maintenance escalator is set close to the cabin door of the corresponding cabin.

Further, the foundation includes three bases, the bottoms of the three bases are sequentially connected by three first beams, the tops of the three bases are all equipped with mounting seats, and the tops of the three mounting bases are connected by three The second beams are connected in sequence, and the bottom of the mounting seat is connected to the corresponding base two first beams through an oblique beam.

Further, the three first beams are connected to the three bases to form an equilateral triangle structure.

Further, the connection between the three second beams and the three installation seats forms an equilateral triangle structure.

In the above technical solution, the utility model provides a new type of wind power generation device with relatively rotating double impellers and no yaw motor, which has the following beneficial effects:

1. The use of balanced steel cables can increase the overall strength of the Y-shaped support structure, and the balanced steel cables can offset the movement of the impellers on the two nacelles to generate a force away from each other, ensuring the service life of this application;

2. The use of the yaw rotation mechanism can drive the Y-shaped support structure to rotate, and then change the direction of the impeller so that the impeller is perpendicular to the wind direction and increase the power generation.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. For some embodiments described, those skilled in the art can also obtain other drawings according to these drawings.

Figure 1 is a structural schematic diagram of a new type of wind power generation device with relatively rotating double impellers and no yaw motor provided by the embodiment of the utility model;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is a side view of Fig. 1;

FIG. 4 is a top view of FIG. 1 .

Explanation of reference signs:

10. Foundation; 11. Base; 12. First beam; 13. Mounting seat; 14. Second beam; 15. Slanting beam;

20. Pillars;

30. Y-shaped support structure; 31. Tower main pole; 32. Structural beam; 33. Balance steel cable; 34. Operation and maintenance escalator;

40. Yaw rotation mechanism;

50, engine room; 51, impeller; 52, engine room door.

Detailed ways

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model will be further introduced in detail below in conjunction with the accompanying drawings.

See Figure 1-4;

A new type of wind power generation device with relatively rotating double impellers and no yaw motor described in the embodiment of the utility model, the device includes:

The foundation 10, the foundation 10 is a floating foundation or a fixed foundation, which can float on the ocean or be fixed on land;

A tower column 20, the tower column 20 is installed on the foundation 10 by bolts;

Y-shaped support structure 30, the Y-shaped support structure 30 is installed on the top of the tower column 20;

The yaw rotation mechanism 40, the yaw rotation mechanism 40 is arranged at the bottom of the Y-shaped support structure 30, the yaw rotation mechanism 40 can drive the Y-shaped support structure 30 to rotate, the yaw rotation mechanism 40 is a yaw rotation axis, and the control The device receives the information output control command from the wind direction sensor, controls the thrust of the double impeller 51, and then drives the yaw rotation axis to rotate;

Two nacelles 50, the two nacelles 50 are respectively mounted on the top of the Y-shaped support structure 30, the output end of each nacelle 50 is provided with an impeller 51, and the impellers 51 on the two nacelles 50 rotate in opposite directions , the impeller 51 on each nacelle 50 has three blades; the two impellers 51 are arranged on one side of the Y-shaped support structure 30, that is, the upwind or downwind direction of the Y-shaped support structure 30, when the two impellers 51 When it is located in the upwind direction, it is arranged on the front side of the Y-shaped support structure 30, and the wind blows to the two impellers 51 first; Blowing to the Y-shaped support structure 30, the overall safety and low cost;

The Y-shaped support structure 30 includes a vertically arranged tower main pole 31, and the two sides of the top of the tower main pole 31 protrude outward to form two structural beams 32, and the tops of the two structural beams 32 pass through The balance steel cable 33 is connected, and the balance steel cable 33 can increase the overall strength of the Y-shaped support structure 30, and the balance steel cable 33 can counteract the force that the impeller 51 on the two nacelles 50 moves away from, ensuring that the application provides the application. service life.

The present application can control the yaw of the two impellers by controlling the thrust of the impeller 51, and this control is a prior art. It is avoided that the impeller on each nacelle 50 needs to be installed with a yaw motor and increase the use cost.

The connection between the balance steel cable 33 and the structural beam 32 is located at a quarter of the top of the structural beam 32 to better counteract the force generated by the movement of the impellers 51 on the two nacelles 50 .

The distance between the two nacelles 50 is greater than 1.7 times the length of the blades on the impeller 51 , so as to avoid the collision of the impellers 51 on the two nacelles 50 during operation.

The tower main rod 31 and the two structural beams 32 are integrally formed to effectively ensure the overall rigidity of the Y-shaped support structure 30 .

Operation and maintenance escalators 34 are arranged on the sides of the two structural beams 32 that are close to each other. The top of the operation and maintenance escalator 34 is arranged close to the cabin door 52 corresponding to the cabin 50, which is convenient for climbing and maintenance.

The foundation 10 includes three bases 11, the bottoms of the three bases 11 are sequentially connected by three first beams 12, the tops of the three bases 11 are provided with mounting seats 13, and the three mounting bases 13 The top is sequentially connected by three second beams 14 , and the bottom of the mounting base 13 is connected with the two first beams 12 corresponding to the base 11 by an inclined beam 15 . The above sequential connection forms a stable triangular structure, and the tower column 20 can be fixed to the corresponding mounting seat 13 by bolts according to the selection. At the same time, the arrangement of the triangular structure does not need to increase the counterweight and reduce the cost.

The three first beams 12 are connected to the three bases 11 to form an equilateral triangle structure. The three second beams 14 are connected with the three installation seats 13 to form an equilateral triangle structure, and the upper and lower equilateral triangle structures make the foundation 10 more stable.

The device of this application can be applied to 20 MW offshore new wind power generation. It has the potential of high efficiency, light weight per unit power, low center of gravity, and low cost. The maximum wind energy utilization coefficient Cp is not less than 0.52, and the comprehensive energy utilization efficiency of the whole machine is not less than 46. %, the total weight of the wind rotor and the nacelle is not greater than 45 tons per megawatt, and the service life is not less than 25 years.

Some exemplary embodiments of the present utility model have been described above only by way of illustration. Undoubtedly, for those skilled in the art, without departing from the spirit and scope of the present utility model, various Modifications are made to the described embodiments. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims (10)

1. A novel wind power generating device with relatively rotating double impellers without yaw motor, characterized in that the device comprises: A foundation (10), wherein the foundation (10) is a floating foundation or a fixed foundation; a tower column (20), the tower column (20) is arranged on the foundation (10); Y-shaped support structure (30), the Y-shaped support structure (30) is installed on the top of the tower column (20); A yaw rotation mechanism (40), the yaw rotation mechanism (40) is arranged at the bottom of the Y-shaped support structure (30), and the yaw rotation mechanism (40) can drive the Y-shaped support structure (30) to rotate; Two nacelles (50), two said nacelles (50) are installed on the top of Y-shaped support structure (30) respectively, the output end of each said nacelles (50) is all provided with impeller (51), two said nacelles The direction of rotation of the impeller (51) on the nacelle (50) is opposite; The Y-shaped support structure (30) includes a vertically arranged tower main rod (31), and the top two sides of the tower main rod (31) protrude outward to form two structural beams (32), two The tops of the structural beams (32) are connected by balancing steel cables (33). 2. A new type of wind power generation device with relatively rotating double impellers without yaw motor according to claim 1, characterized in that the connection between the balance steel cable (33) and the structural beam (32) is located at the structural beam (32) near its top quarter position. 3. The novel wind power generating device of a kind of relatively rotating double impeller without yaw motor according to claim 1, characterized in that, the distance between the two nacelles (50) is greater than the blade length on the impeller (51) 1.7 times. 4. A new type of wind power generator with relatively rotating double impellers without yaw motor according to claim 1, characterized in that, the two impellers (51) are all arranged on one side of the Y-shaped support structure (30) , when the two impellers (51) are located in the upwind direction, they are arranged on the front side of the Y-shaped support structure (30), and the wind blows to the two impellers (51) first; when the two impellers (51) are located in the downwind direction, It is arranged on the rear side of the Y-shaped support structure (30), and the wind blows to the Y-shaped support structure (30) first. 5. A new type of wind power generation device with relatively rotating double impellers and no yaw motor according to claim 1, characterized in that the main pole (31) of the tower and the two structural beams (32) are integrally formed . 6. A novel wind power generating device with relatively rotating double impellers without yaw motor according to claim 5, characterized in that, two said structural beams (32) are provided with operation and maintenance escalators ( 34). 7. A new type of wind power generation device with relatively rotating double impellers without yaw motor according to claim 6, characterized in that the top of the operation and maintenance escalator (34) is close to the cabin door (52) of the corresponding cabin (50) )set up. 8. A new type of wind power generating device with relatively rotating double impellers without yaw motor according to claim 1, characterized in that, the foundation (10) includes three bases (11), and the three bases (11 ) are sequentially connected by three first beams (12), the tops of the three bases (11) are all provided with mounts (13), and the tops of the three mounts (13) are connected by three second beams (14) are connected in sequence, and the bottom of the mounting seat (13) is connected with the corresponding base (11) between the two first beams (12) connected by an inclined beam (15). 9. A new type of wind power generating device with relatively rotating double impellers without yaw motor according to claim 8, characterized in that, the three first beams (12) are connected to the three bases (11) as Equilateral triangle structure. 10. A new type of wind power generator with relatively rotating double impellers without yaw motor according to claim 8, characterized in that the three second beams (14) are connected to the three mounting seats (13) into an equilateral triangle structure.

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