WO2017156859A1

WO2017156859A1 - Offshore wind power generator with v-shaped wind turbine structure

Info

Publication number: WO2017156859A1
Application number: PCT/CN2016/082230
Authority: WO
Inventors: 张远林
Original assignee: 福建通尼斯新能源科技有限公司
Priority date: 2016-03-18
Filing date: 2016-05-16
Publication date: 2017-09-21
Also published as: CN105781891B; CN105781891A

Abstract

An offshore wind power generator with a V-shaped wind turbine structure comprises a V-shaped wind turbine (1), a gear transmission mechanism (2), a coupling (3), a generator set (4), and a base platform (5). The V-shaped wind turbine (1) is provided with three inclined rotating arms (1-1). Lower ends of the rotating arms (1-1) attach to a wind turbine turntable (1-9). The rotating arms (1-1) are arranged in a radial manner with a wind turbine rotary shaft (1-3) at the center. An upper end of each rotating arm (1-1) is provided with a blade (1-6). A lower end of the wind turbine rotary shaft (1-3) is connected to the generator set (4) by the gear transmission mechanism (2) and the coupling (3). The generator set (4) is mounted on the base platform (5). The base platform (5) is fixed to the seabed by means of marine pilings or anchor chains. The rotating arms (1-1) of the wind turbine are inclined, and the lower ends of the rotating arms (1-1) are directly combined with the wind turbine turntable (1-9), thereby effectively lowering the center of gravity of the wind turbine, ensuring the operational stability of the offshore wind power generator.

Description

Offshore wind turbine with V-shaped wind wheel structure

Technical field

The invention relates to a wind power generator, in particular to an offshore wind power generator with a V-type wind wheel structure, belonging to the technical field of wind power generation.

Background technique

The principle of wind power generation is to use wind power to drive the rotation of the windmill blades, and then increase the speed of rotation by the speed increaser to promote the generator to generate electricity. Since wind power does not involve fuel problems and does not generate radiation or air pollution, it is a clean and environmentally friendly way of generating electricity. Especially with the continuous development and utilization of marine resources, the construction of offshore wind farms is forming a boom in the world. Many large wind farms stand on the innocent ocean. However, due to the difficulty in the construction of offshore wind farms, not only the scale of investment in labor and cost is unexpected, but also the unpredictable weather conditions will cause different degrees of damage to large-scale wind power equipment. Therefore, people are constantly searching for easy installation and maintenance, and reducing construction. Cost of wind turbine structure.

According to the arrangement of the rotating shaft of the wind turbine, the wind turbine can be divided into two categories: horizontal axis wind turbine and vertical axis wind turbine. The wind turbine rotating shaft of the vertical axis wind turbine is perpendicular to the ground or the airflow direction in the wind direction. The wind does not need to be changed, so the vertical axis wind turbine not only simplifies the structural design, but also reduces the gyroscopic force when the wind wheel is against the wind. However, the existing vertical axis wind turbine rotors are mostly located at the upper part of the rotating shaft of the wind wheel, and have a Φ-type or Η-type structure, and the center of gravity is relatively high, which affects the stability of the wind turbine operation; The wind turbine blades are installed in a fixed assembly manner. For wind farms standing on the innocent ocean, because the blade angle cannot be adjusted, the blade damage is easily caused in the case of heavy wind and waves, which affects the offshore wind turbine. Service life.

Summary of the invention

The object of the present invention is to provide an offshore wind turbine with a V-type wind wheel structure with low construction cost and convenient installation and maintenance, in order to adjust the wind turbine working condition in accordance with the sea wind and wave conditions. State, to avoid damage to the blade and extend the service life of offshore wind turbines.

The above object of the present invention is achieved by the following technical solutions:

An offshore wind turbine with a V-shaped wind wheel structure, comprising a V-shaped wind wheel, a gear transmission mechanism, a coupling, a generator set and a base platform; the V-shaped wind wheel is provided with three inclined rotating arms, the rotation The lower end of the arm is assembled with the wind wheel turntable, and the rotating arm is radially distributed around the rotating shaft of the wind wheel, and the blade is disposed at the upper end of each rotating arm; the lower end of the rotating shaft of the wind wheel passes through the gear transmission mechanism, the coupling and the generator set Connecting; the generator set is mounted on the base platform; the base platform is fixed to the sea bottom by sea piles or anchor chains.

The offshore wind turbine of the V-shaped wind wheel structure, the lower end of the rotating arm is hingedly mounted on the wind wheel turntable, and the first pulling arm is disposed at the hinge end of the rotating arm, the lower end of the first pulling arm The upper end is fixedly coupled to the rotating arm, and the upper end is hingedly assembled by the second arm pulling arm and the rotating arm retracting drive mechanism disposed on the rotating shaft of the wind wheel.

In the above-mentioned V-type wind turbine structure offshore wind turbine, the rotating arm retracting drive mechanism comprises a first motor, a transmission assembly, a first lead screw and a lifting plate; the first motor is fixedly mounted on the rotating shaft of the wind wheel, The first motor output shaft is fixedly assembled with the driving wheel in the transmission assembly; the driven wheel of the transmission assembly is fixed at the lower end of the first screw; the lifting plate is fitted with the first lead screw, and is hingedly assembled on the outer edge of the lifting plate Two pulling arms.

In the above-described V-type wind turbine structure offshore wind turbine, the transmission assembly of the rotating arm retracting drive mechanism is preferably a gear transmission assembly.

The above-mentioned V-type wind turbine structure offshore wind turbine, the blade is a split structure, comprising an upper half blade and a lower half blade, wherein the upper half blade and the lower half blade are respectively connected to the rotating arm through an articulated structure The rotating arm is a cavity structure, and a sliding slot hole is disposed on the upper and lower side walls thereof, and a blade retracting driving mechanism is disposed in the rotating arm cavity structure.

In the above-mentioned V-type wind turbine structure offshore wind turbine, the blade retracting drive mechanism comprises a second motor, a second lead screw, a moving seat and a sealing plate for blocking the sliding holes of the upper and lower side walls of the rotating arm; The second motor is fixedly mounted in the cavity of the rotating arm, and the second motor output shaft is fixedly assembled with the second lead screw; the second lead screw and the moving seat are matched to form a moving part of the screw nut; the moving seat and the sealing plate Fixed assembly The plate comprises an upper sealing plate and a lower sealing plate, and a pulling rod is arranged on an outer side surface of the upper sealing plate and the lower sealing plate, the drawing rod passes through the sliding slot holes of the upper and lower side walls of the rotating arm, respectively, and the upper half blade and the lower half The blade is hingedly assembled.

In the above-mentioned V-type wind turbine structure, an offshore wind turbine is provided with a cable between each of the rotating arms and the rotating shaft of the wind wheel.

An offshore wind turbine of the above-described V-type wind wheel structure, the gear transmission mechanism comprising a driving gear and a driven gear that mesh with each other, the driving gear is fixed on a rotating shaft of the wind wheel, and the driven gear passes through the coupling Generator set connection.

The offshore wind turbine of the above-mentioned V-type wind wheel structure, the driving gear and the driven gear of the gear transmission mechanism are bevel gear structures, and the generator set is horizontally arranged.

In the above-mentioned V-type wind turbine structure, the number of the driven gears and the number of the couplings and the generator sets in the gear transmission mechanism are not less than four groups.

The invention adopts a V-shaped wind wheel structure. Since the rotating arm of the V-shaped wind wheel is arranged obliquely, the lower end is hingedly assembled with the wind wheel turntable, thereby effectively reducing the height of the center of gravity of the wind turbine wind wheel and ensuring the working of the offshore wind power generator. The stability of the present invention provides a rotating arm retracting drive mechanism on the rotating shaft of the wind wheel, so that the rotation of the first motor, the transmission assembly, the first lead screw and the lifting plate in the rotating arm retracting drive mechanism can achieve the rotation The control of the arm retracting state; the invention also designs the blade as a split structure that is hingedly assembled with the upper end of the rotating arm, and at the same time, a blade retracting driving mechanism is arranged in the rotating arm cavity, so that the blade can be retracted by the driving mechanism The combination of the two motor, the screw nut movement pair and the moving seat realizes the control of the state of the blade retracting; the invention can drive several groups of generator sets to operate by the rotating shaft of the wind wheel, thereby reducing the requirement for the installed capacity of the single group generator , thereby reducing the purchase cost of the power generation equipment; in addition, the offshore wind turbine with the V-type wind wheel structure according to the present invention has a rotating arm and a wind wheel Disc, rotating arm assembly structure of the blade to facilitate disassembly site, installation and maintenance without the aid of an overall structure of a generator of large lifting devices, thus greatly reducing installation and maintenance costs. In summary, the invention has the characteristics of low construction cost, convenient installation and maintenance, and can adjust the angle of the rotating arm and the blade according to the sea wind and wave condition, avoiding the damage of the blade in the case of large wind and waves, and prolonging the service life of the offshore wind power generator. .

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention (the blade is in an open state);

Figure 2 is a schematic view of the structure of the wind wheel;

Figure 3 is a schematic view of the rotating arm retracting drive mechanism;

4 is a schematic view showing the working principle of the transmission component in the rotating arm retracting drive mechanism;

Figure 5 is a schematic view showing the assembly relationship of the rotating arm, the blade, and the blade retracting drive mechanism;

Figure 6 is a schematic view of the blade retracting drive mechanism;

Figure 7 is a schematic view showing the closed state of the blade;

Figure 8 is a schematic view showing the rotating arm of the present invention in an open state and the blade in a closed state.

The list of labels in the figure is: 1, V-shaped wind wheel, 1-1, rotating arm, 1-1-1, chute hole, 1-2, first pulling arm, 1-3, wind wheel rotating shaft, 1-4, second pulling arm, 1-5, rotating arm retracting drive mechanism, 1-5-1, first motor, 1-5-2, transmission component, 1-5-2-1, driving wheel ,1-5-2-2, driven wheel, 1-5-3, first lead screw, 1-2-4, lifting plate, 1-6, blade, 1-6-1, upper half blade, 1 -6-2, lower half blade, 1-7, blade retracting drive mechanism, 1-7-1, second motor, 1-7-2, second lead screw, 1-7-3, moving seat, 1-7-4, sealing plate, 1-7-5, drawbar, 1-8, cable, 1-9, wind wheel turntable, 2, gear transmission mechanism, 3, coupling, 4, generator set, 5 , the base platform.

In particular, in order to clearly express the position and assembly relationship between the components, a set of rotating arms, blades, and blade retracting drive mechanisms mounted in front of the rotating shaft of the wind turbine are omitted in FIGS. 1 and 8.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to FIG. 1 and FIG. 2, the present invention is an offshore wind turbine of a V-type wind wheel structure, which comprises a V-shaped wind wheel 1, a gear transmission mechanism 2, a coupling 3, a generator set 4 and a base platform 5; The V-shaped wind wheel 1 is provided with three inclined arms 1-1, the lower end of which is assembled with the wind wheel 1-9, and the rotating arm 1-1 is centered on the rotating shaft 1-3 of the wind wheel. Radially distributed, at the upper end of each of the rotating arms 1-1, a blade 1-6; the lower end of the rotating shaft 1-3 is connected to the genset 4 via a gear transmission 2, a coupling 3; 4 is mounted on the base platform 5; the base platform 5 is fixed to the sea bottom by sea studs or anchor chains. In the offshore wind turbine of the V-type wind wheel structure according to the present invention, the rotating arm 1-1 of the wind wheel adopts an inclined arrangement, and the lower end thereof is directly assembled with the wind wheel turntable 1-9, thereby effectively reducing The height of the center of gravity of the wind turbine wind turbine ensures the operation of the offshore wind turbine stability

Referring to FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 8, as a preferred embodiment of the present invention, the rotating arm 1-1 is designed as a retractable structure, and the lower end of the rotating arm 1-1 is hingedly mounted. On the wind wheel turntable 1-9, and at the hinge end of the rotating arm 1-1, a first pulling arm 1-2 is provided, and the lower end of the first pulling arm 1-2 is fixedly connected with the rotating arm 1-1, and the upper end The second pulling arm 1-4 is hingedly assembled with the rotating arm retracting drive mechanism 1-5 disposed on the rotating shaft 1-3 of the wind wheel; the rotating arm retracting drive mechanism 1-5 includes the first motor 1 - 5-1, the transmission assembly 1-5-2, the first lead screw 1-5-3, and the lifting plate 1-5-4; the first motor 1-5-1 is fixedly mounted on the rotating shaft 1-3 of the wind wheel The output shaft of the first motor 1-5-1 is fixedly assembled with the driving wheel 1-5-2-1 of the transmission assembly 1-5-2; the driven wheel 1-5- of the transmission assembly 1-5-2 2-2 is fixed at the lower end of the first lead screw 1-5-3; the lifting plate 1-5-4 is fitted with the first lead screw 1-5-3, and is hinged at the outer edge of the lifting plate 1-5-4 The second pulling arms 1-4 are assembled. When the wind wave changes at sea, the first motor 1-5-1 can be driven to drive the gear transmission assembly 1-5-2 to drive the first lead screw 1-5-3 to rotate, thereby making the first lead screw 1-5 -3 cooperate with the lifting plate 1-5-4 to move up and down, and then drive the second pulling arm 1-4 and the first pulling arm 1-2 through the lifting plate 1-5-4 to complete the angle adjustment of the rotating arm 1-1 The action realizes the control of the retracting state of the rotating arm 1-1; especially in the case of extremely bad weather conditions, the rotating arm 1-1 can be adjusted to the fully open state as shown in FIG. 8 for a huge sea storm. In order to minimize the height of the center of gravity of the generator rotor and improve the stability of the operation of the wind turbine, the triangular area formed by the rotating arm 1-1 can also block the wind and waves for the fishing boat at sea, when the storm is coming, The boat can be docked in a triangular area to minimize damage to small fishing boats.

Referring to Figures 5, 6, and 7, as a preferred embodiment of the present invention, the blades 1-6 are designed as a split structure, the blades 1-6 including the upper half blade 1-6-1 and the lower half blade 1-6-2, the upper half blade 1-6-1 and the lower half blade 1-6-2 are respectively connected to the rotating arm 1-1 through an articulated structure; the rotating arm 1-1 is a cavity structure A sliding slot hole 1-1-1 is provided on the upper and lower side walls thereof, and a blade retracting drive mechanism 1-7 is disposed in the rotating arm cavity structure. The blade retracting drive mechanism 1-7 includes a second motor 1-7-1, a second lead screw 1-7-2, a moving seat 1-7-3, and a sliding slot for blocking upper and lower side walls of the rotating arm 1-1-1 sealing plate 1-7-4; the second motor 1-7-1 is fixedly mounted in the inner cavity of the rotating arm, and the second motor 1-7-1 output shaft and the second screw 1- 7-2 fixed assembly; the second lead screw 1-7-2 and the movable seat 1-7-3 are assembled to form a screw snail a female exercise pair; the movable seat 1-7-3 is fixedly assembled with the sealing plate 1-7-4; the sealing plate 1-7-4 includes an upper sealing plate and a lower sealing plate, and the upper sealing plate and the lower sealing plate Pull rods 1-7-5 are installed on the outer side surfaces, and the pull rods 1-7-5 pass through the sliding slot holes 1-1-1 of the upper and lower side walls of the rotating arm, respectively, and the upper half blades 1-6-1, The lower half of the blade 1-6-2 is hingedly assembled. When the wind wave in the sea changes, the second motor 1-7-1 in the blade retracting drive mechanism 1-7 can drive the movement of the screw nut, so that the moving seat of the blade retracting drive mechanism 1-7 7-3 moves up and down along the second year of the screw 1-7-2, and the upper half blade 1-6-1 and the lower half blade 1-6-2 are respectively rotated around the hinge axis to realize the state of retracting the blade. Control; for weather conditions with large sea winds, the blades 1-6 can be adjusted to the fully closed state as shown in Figure 7 to avoid damage to the blades 1-6 during heavy winds.

Referring to FIG. 1 to FIG. 8 , the assembly structure of the rotating arm 1-1 and the wind wheel turntable 1-9, the rotating arm 1-1 and the blade 1-6 of the offshore wind turbine of the V-type wind wheel structure according to the present invention is convenient. On-site disassembly and assembly, the installation and maintenance of the overall structure of the generator does not require the use of large hoisting equipment, thus greatly reducing the cost of installation and maintenance operations.

Claims

An offshore wind turbine with a V-shaped wind wheel structure, characterized in that the offshore wind turbine of the V-shaped wind wheel structure comprises a V-shaped wind wheel (1), a gear transmission mechanism (2), a coupling (3) ), the generator set (4) and the base platform (5); the V-shaped wind wheel (1) is provided with three inclined rotating arms (1-1), the lower end of the rotating arm (1-1) and the wind wheel turntable (1-9) Assembling, the rotating arm (1-1) is radially distributed around the rotating shaft (1-3) of the rotor, and blades (1-6) are provided at the upper end of each rotating arm (1-1). The lower end of the rotating shaft (1-3) of the wind wheel is connected to the generator set (4) through a gear transmission mechanism (2) and a coupling (3); the generator set (4) is mounted on the base platform (5) The base platform (5) is fixed to the sea floor by sea studs or anchor chains.
The offshore wind turbine of the V-shaped wind wheel structure according to claim 1, wherein the lower end of the rotating arm (1-1) is hingedly mounted on the wind wheel turntable (1-9) and is rotating The hinge end of the arm (1-1) is provided with a first pulling arm (1-2), the lower end of the first pulling arm (1-2) is fixedly connected with the rotating arm (1-1), and the upper end is passed through the second The pulling arms (1-4) are hingedly assembled with the rotating arm retracting drive mechanism (1-5) provided on the rotating shaft (1-3) of the wind wheel.
The offshore wind turbine of the V-shaped wind wheel structure according to claim 2, wherein the rotating arm retracting drive mechanism (1-5) comprises a first electric motor (1-5-1) and a transmission assembly ( 1-5-2), the first lead screw (1-5-3) and the lifting plate (1-5-4); the first motor (1-5-1) is fixedly mounted on the rotating shaft of the wind wheel (1) -3), the output shaft of the first motor (1-5-1) is fixedly assembled with the driving wheel (1-5-2-1) of the transmission assembly (1-5-2); 5-2) The middle driven wheel (1-5-2-2) is fixed at the lower end of the first lead screw (1-5-3); the lifting plate (1-5-4) and the first lead screw (1- 5-3) Fitted, the second pulling arm (1-4) is hingedly attached to the outer edge of the lifting plate (1-5-4).
The offshore wind turbine of the V-shaped wind wheel structure according to claim 3, characterized in that the transmission assembly (1-5-2) of the rotary arm retracting drive mechanism (1-5) is a gear transmission assembly.
An offshore wind turbine of a V-shaped wind wheel structure according to any one of claims 1 to 4, wherein said blades (1-6) are of a split type structure including upper half blades (1-6 -1) and the lower half a blade (1-6-2), the upper half blade (1-6-1) and the lower half blade (1-6-2) being respectively coupled to the rotating arm (1-1) by an articulated structure; The rotating arm (1-1) is a cavity structure, and a sliding slot hole (1-1-1) is disposed on the upper and lower side walls thereof, and a blade retracting driving mechanism (1-7) is disposed in the rotating arm cavity structure. .
The offshore wind turbine of the V-shaped wind wheel structure according to claim 5, wherein the blade retracting drive mechanism (1-7) comprises a second motor (1-7-1) and a second lead screw (1-7-2), moving seat (1-7-3) and sealing plate (1-7-4) for blocking the upper and lower side sliding slot holes (1-1-1) of the rotating arm; The second motor (1-7-1) is fixedly mounted in the inner cavity of the rotating arm, and the output shaft of the second motor (1-7-1) is fixedly assembled with the second lead screw (1-7-2); The lead screw (1-7-2) and the moving base (1-7-3) are fitted to form a moving nut of the screw nut; the moving seat (1-7-3) is fixed with the sealing plate (1-7-4) Assembly; the sealing plate (1-7-4) comprises an upper sealing plate and a lower sealing plate, and tie rods (1-7-5) are mounted on the outer side surfaces of the upper sealing plate and the lower sealing plate, the pulling rod (1) -7-5) Hinged to the upper half blade (1-6-1) and the lower half blade (1-6-2) through the chute hole (1-1-1) on the upper and lower side walls of the swivel arm assembly.
The offshore wind turbine of the V-shaped wind wheel structure according to claim 6, wherein a cable is provided between each of the rotating arms (1-1) and the rotating shaft (1-3) of the wind turbine ( 1-8).
The offshore wind turbine of the V-shaped wind wheel structure according to claim 7, wherein the gear transmission mechanism (2) includes a driving gear and a driven gear that mesh with each other, and the driving gear is fixed to the rotating of the wind wheel. At the lower end of the shaft (1-3), the driven gear is coupled to the generator set (4) via a coupling (3).
The offshore wind turbine of the V-shaped wind wheel structure according to claim 8, characterized in that the driving gear and the driven gear of the gear transmission mechanism (2) are bevel gear structures, and the generator set (4) is horizontally arranged.
The offshore wind turbine of the V-shaped wind wheel structure according to claim 9, wherein the number of driven gears in the gear transmission mechanism (2) and the number of the coupling (3) and the generator set (4) Not less than four groups.