CN216044158U

CN216044158U - Vertically-adjusted variable-pitch wind driven generator system

Info

Publication number: CN216044158U
Application number: CN202122803517.2U
Authority: CN
Inventors: 邢军强; 代竹文; 张耘硕; 汪明武; 邱薇; 钟丹田; 孔莹莹; 于文迪
Original assignee: Shenyang Institute of Engineering
Current assignee: Shenyang Institute of Engineering
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-03-15
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses a vertically-adjusted variable-pitch wind driven generator system, which comprises a fixed frame, a generator and a variable-pitch mechanism; the fixing frame comprises a fixing block; a generator is embedded in the center of the fixed block; the top surface of the fixed block is fixedly connected with an auxiliary bracket; the variable-pitch mechanism comprises a rotating cylinder; the bottom of the inner cavity of the rotary cylinder is fixedly connected with a fixed disc; the fixed disc is fixedly connected with an input shaft of the generator; two pitch-changing units are arranged in the middle of the rotating cylinder and are symmetrically arranged; one end of each of the two variable pitch units is fixedly connected with a blade; the top end of the rotary cylinder is provided with a driving unit; the driving unit is in transmission connection with the two variable pitch units respectively; two ends of the rotary cylinder are respectively connected with the fixed block and the auxiliary support in a rotating mode. The utility model can realize pitch variation of the vertical wind driven generator and resist attack of hurricane weather.

Description

Vertically-adjusted variable-pitch wind driven generator system

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a vertically-adjusted variable-pitch wind driven generator system.

Background

The wind power generator is an electric power device which converts wind energy into mechanical work, and the mechanical work drives a rotor to rotate so as to finally output alternating current. The wind-driven generator generally comprises wind wheels, a generator (including a device), a direction regulator (empennage), a tower, a speed-limiting safety mechanism, an energy storage device and other components.

One of the most core components of the wind driven generator, a 10MW grade outer rotor split type multiphase permanent magnet direct-drive wind driven generator (patent No. CN111490615A) in chinese patent has the advantages of simple generator structure, direct drive of the generator by the wind wheel, small torque pulsation, etc., but at present, the wind driven generator often faces hurricane environment, and the existing wind driven generator often cannot face such weather, causing damage; therefore, it is highly desirable to develop a vertically adjustable pitch wind turbine system to solve the problem that the existing direct-drive wind turbine system cannot adjust the pitch to resist hurricanes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vertical-adjustment variable-pitch wind driven generator system, which is used for solving the problems in the prior art and can realize the variable pitch of a vertical wind driven generator and resist the attack of hurricane weather.

In order to achieve the purpose, the utility model provides the following scheme:

the utility model provides a vertically-adjusted variable-pitch wind driven generator system, which comprises a fixed frame, a generator and a variable-pitch mechanism;

the fixing frame comprises a fixing block; a generator is embedded in the center of the fixed block; the top surface of the fixed block is fixedly connected with an auxiliary bracket;

the variable pitch mechanism comprises a rotary cylinder; the bottom of the inner cavity of the rotary cylinder is fixedly connected with a fixed disc; the fixed disc is fixedly connected with an input shaft of the generator; two pitch-changing units are arranged in the middle of the rotating cylinder and are symmetrically arranged; one end of each of the two variable pitch units is fixedly connected with a blade; the top end of the rotary cylinder is provided with a driving unit; the driving units are in transmission connection with the two pitch-variable units respectively;

and two ends of the rotary cylinder are respectively and rotatably connected with the fixed block and the auxiliary support.

Preferably, the auxiliary support comprises four upright posts; the four upright posts are respectively and fixedly arranged at four corners of the top surface of the fixed block; the top surface of the upright post is fixedly connected with an auxiliary block; the center of the auxiliary block is rotationally connected with the top end of the rotary cylinder.

Preferably, the driving unit includes a telescopic motor; one end of the telescopic motor is fixedly connected with a rotating disc; the side surface of the rotating disc is fixedly connected with the top end of the inner wall of the rotating cylinder; one end of a telescopic shaft of the telescopic motor is fixedly connected with a driving block; two sides of the driving block are respectively and rotatably connected with a connecting plate; one end of the connecting plate is rotatably connected with a variable pitch unit.

Preferably, the pitch unit comprises a guide block, a rotating shaft and two guide rods; the rotating shaft and the guide rod are respectively matched with the guide block; one end of the rotating shaft and one end of the guide rod are respectively fixedly connected with the side face of the paddle; the other end of the rotating shaft is rotatably connected with the center of the guide block; the other end of one of the guide rods is rotatably connected with one end of the connecting plate; the guide block is embedded in the side wall of the rotary cylinder and is fixedly connected with the rotary cylinder.

Preferably, the side wall of the guide block is provided with two arc-shaped grooves which are symmetrically arranged and are not communicated with each other; the guide rod is matched with the arc-shaped groove and is in sliding connection with the arc-shaped groove; and a spring is fixedly connected between the guide rod which is not rotationally connected with the connecting plate and the bottom of the arc-shaped groove.

Preferably, a fixing plate is fixedly connected to one end, far away from the paddle, of the rotating shaft; the fixed plate is fixedly connected with the two guide rods respectively; the fixed plate is arranged in the inner cavity of the rotary cylinder.

Preferably, the two connecting plates are arranged in a center symmetry manner about the center of the circle of the top surface of the rotary cylinder.

Preferably, the included angle between the connecting plate and the axis of the rotary cylinder is an acute angle.

The utility model discloses the following technical effects:

the utility model protects the rotary drum through the fixed frame to ensure the stable operation of the rotary drum rotating at high speed.

The utility model realizes the adjustment of the angle of the blade through the symmetrically arranged variable pitch units, and avoids the damage caused by over-speed rotation in hurricane environment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a schematic top view/sectional view of the present invention.

FIG. 2 is a schematic side view of the present invention.

FIG. 3 is a side view schematic diagram of the drive unit and the pitch unit.

FIG. 4 is a schematic side view of the present invention showing a variable pitch angle.

Wherein, 1, fixing frame; 11. a fixed block; 12. a column; 13. an auxiliary block; 2. a generator; 3. a variable pitch mechanism; 31. a rotary drum; 32. fixing the disc; 33. a telescopic motor; 34. rotating the disc; 35. a drive block; 36. a connecting plate; 37. a guide block; 371. an arc-shaped slot; 372. a spring; 38. a rotating shaft; 39. a guide bar; 4. a paddle; 5. and (7) fixing the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

A vertical adjustment variable pitch wind driven generator system comprises a fixed frame 1, a generator 2 and a variable pitch mechanism 3;

the fixing frame 1 comprises a fixing block 11; a first mounting groove is formed in the center of the fixing block 11; a generator 2 is fixedly arranged in the first mounting groove; the top surface of the fixed block 11 is fixedly connected with an auxiliary bracket;

the pitch mechanism 3 includes a rotary cylinder 31; the bottom of the inner cavity of the rotary cylinder 31 is fixedly connected with a fixed disc 32; the fixed disk 32 is horizontally arranged, and the center of the bottom surface of the fixed disk is fixedly connected with the input shaft of the generator 2; facilitating the transmission of external power to the generator 2; two pitch-variable units are arranged in the middle of the rotating cylinder 31 and are arranged in a manner of being centrosymmetric about the center of a circle of a horizontal section of the rotating cylinder; one end of each of the two variable pitch units is fixedly connected with a blade 4; the top end of the rotary cylinder 31 is provided with a driving unit; the driving unit is respectively in transmission connection with the two variable pitch units, and the single driving unit is used for driving the two variable pitch units, so that the structure of the utility model is optimized;

the both ends of the rotary drum 31 are respectively connected with the fixed block 11 and the auxiliary support in a rotating mode, the rotary drum 31 is limited by the fixed block 11 and the auxiliary support, and stable operation of the rotary drum 31 can be guaranteed.

In a further optimized scheme, the auxiliary support comprises four upright posts 12; the four upright columns 12 are respectively fixedly arranged at four corners of the top surface of the fixed block 11, the upright columns 12 are arranged at corners of the top surface of the fixed block 11, the area of the fixed block 11 can be fully utilized, the fixed block 11 is minimized, the upright columns 12 are far away from the blades 4, and interference is avoided; the top surface of the upright post 12 is fixedly connected with an auxiliary block 13; the second mounting groove has been seted up at supplementary piece 13 bottom surface center, and interference fit has a bearing (the attached drawing does not show) in the second mounting groove, and bearing and 31 top end interference fit of rotatory section of thick bamboo have realized supplementary piece 13 bottom surface center and 31 top ends of rotatory section of thick bamboo and have rotated and be connected.

In a further optimized scheme, the driving unit comprises a telescopic motor 33; one end of the main body of the telescopic motor 33 is fixedly connected with a rotating disc 34; the side surface of the rotating disc 34 is fixedly connected with the top end of the inner wall of the rotating cylinder 31; one end of a telescopic shaft of the telescopic motor 33 is fixedly connected with a driving block 35; two sides of the driving block 35 are respectively and rotatably connected with a connecting plate 36; the two connecting plates 36 are arranged in a central symmetry manner around the center of the circle on the top surface of the rotary cylinder 31; the included angle between the connecting plates 36 and the axis of the rotating cylinder 31 is an acute angle, and the two connecting plates 36 and the axis of the rotating cylinder 31 are arranged at a certain angle, so that the extension and retraction of the telescopic motor 33 can drive the variable pitch unit to act, and the phenomenon that the machine is locked and cannot move when the included angle is zero is avoided; one end of the connecting plate 36 is rotatably connected with a pitch unit.

In a further optimized scheme, the pitch unit comprises a guide block 37, a rotating shaft 38 and two guide rods 39; the rotating shaft 38 and the guide rod 39 are respectively matched with the guide block 37; one end of the rotating shaft 38 and one end of the guide rod 39 are fixedly connected with the side surface of the blade 4 respectively; the other end of the rotating shaft 38 is connected with the center of the guide block 37 in a rotating way; the other end of one of the guide rods 39 is rotatably connected with one end of the connecting plate 36; through holes are symmetrically formed in the side surface of the rotary cylinder 31; the guide block 37 is fixedly mounted on the sidewall of the rotary cylinder 31 through a through hole and is fixedly connected with the rotary cylinder 31.

In a further optimized scheme, two arc-shaped grooves 371 which are symmetrically arranged and are not communicated are formed in the side wall of the guide block 37; the two arc-shaped grooves 371 are vertically arranged opposite to the end faces, so that the blades 4 can be horizontally placed when the guide rods 39 are placed in the middle of the arc-shaped grooves 371; the guide rod 39 is matched with and connected with the arc-shaped groove 371 in a sliding way; a spring 372 is fixedly connected between the guide rod 39 which is not rotatably connected with the connecting plate 36 and the bottom of the arc-shaped groove 371.

Further, the two guide rods 39 and the rotating shaft 38 are arranged in parallel, so that later pitch adjustment is facilitated.

Further, the arc centers of the two arc-shaped grooves 371 are overlapped, so that the two guide rods 39 can freely rotate around the rotating shaft 38 along the arc-shaped grooves 371.

In a further optimized scheme, one end of the rotating shaft 38, which is far away from the paddle 4, is fixedly connected with a fixing plate 5; the fixed plate 5 is fixedly connected with the two guide rods 39 respectively; the fixed plate 5 is arranged in the inner cavity of the rotary cylinder 31, the two guide rods 39 and the rotating shaft 38 are fixedly connected together by the fixed plate 5, and the two guide rods 39 and the rotating shaft 38 are stressed together by driving one guide rod 39 to move through the connecting plate 36, so that the clamping stagnation of movement caused by the stress deformation of a single guide rod 39 or the stress deformation of the rotating shaft 38 is avoided, and the mechanical strength of the variable pitch unit is improved.

The working process of the embodiment is as follows:

firstly, the utility model is placed at an open position and fixed firmly, the telescopic motor 33 is started, the driving block 35 is pushed to move downwards, namely the connecting plate 36 is pushed to drive one guide rod 39 to move downwards, the guide rod 39 moves downwards along the arc-shaped groove 371 under the external force of the connecting plate 36, and then drives the other guide rod 39 to move upwards along the arc-shaped groove 371, because the two guide rods 39 are both fixedly arranged on the side surface of the blade 4, the blade 4 can be arranged horizontally from the initial position to a certain angle with the horizontal plane under the condition that the two guide rods 39 move in opposite directions, the stress on the windward side of the blade 4 is gradually improved, and the rotating speed of the rotating cylinder 31 under the driving of the blade 4 is also improved.

The two ends of the rotating cylinder 31 are respectively connected with the fixed block 11 and the auxiliary block 13 in a rotating mode through bearings (not shown in the attached drawings), when the paddle unit 4 is adjusted to a certain angle, the rotating cylinder 31 can be driven to rotate under the action of external wind force, the fixed disc 32 fixedly connected to the bottom end of the rotating cylinder 31 is fixedly connected with the generator 2, and therefore when the rotating cylinder 31 rotates, the input shaft of the generator 2 can be driven to rotate to generate electricity.

When the external wind power is abnormally increased, in order to avoid the damage of the wind power generator caused by overhigh rotating speed, the telescopic motor 33 can be adjusted to adjust the blades to be parallel to the horizontal plane through the guide rod 39, and the wind power borne by the blades is sharply reduced, so that the dangerous condition is avoided. When the guide rod 39 is adjusted, the spring 372 will give a certain pulling force, balancing the lateral force of the guide rod 39.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. A vertically-adjusted variable-pitch wind driven generator system is characterized by comprising a fixed frame (1), a generator (2) and a variable-pitch mechanism (3);

the fixing frame (1) comprises a fixing block (11); a generator (2) is embedded in the center of the fixed block (11); the top surface of the fixed block (11) is fixedly connected with an auxiliary bracket;

the pitch mechanism (3) comprises a rotary cylinder (31); the bottom of the inner cavity of the rotary cylinder (31) is fixedly connected with a fixed disc (32); the fixed disc (32) is fixedly connected with an input shaft of the generator (2); two pitch-changing units are arranged in the middle of the rotating cylinder (31) and are symmetrically arranged; one end of each of the two variable pitch units is fixedly connected with a blade (4); the top end of the rotary cylinder (31) is provided with a driving unit; the driving units are in transmission connection with the two pitch-variable units respectively;

two ends of the rotary cylinder (31) are respectively connected with the fixed block (11) and the auxiliary support in a rotating mode.

2. A vertically adjustable pitch wind generator system according to claim 1, wherein: the auxiliary support comprises four upright posts (12); the four upright posts (12) are respectively and fixedly arranged at four corners of the top surface of the fixed block (11); the top surface of the upright post (12) is fixedly connected with an auxiliary block (13); the center of the auxiliary block (13) is rotationally connected with the top end of the rotary cylinder (31).

3. A vertically adjustable pitch wind generator system according to claim 1, wherein: the drive unit comprises a telescopic motor (33); one end of the telescopic motor (33) is fixedly connected with a rotating disc (34); the side surface of the rotating disc (34) is fixedly connected with the top end of the inner wall of the rotating cylinder (31); one end of a telescopic shaft of the telescopic motor (33) is fixedly connected with a driving block (35); two sides of the driving block (35) are respectively and rotatably connected with a connecting plate (36); one end of the connecting plate (36) is rotatably connected with a variable pitch unit.

4. A vertically adjustable pitch wind generator system according to claim 3, wherein: the pitch unit comprises a guide block (37), a rotating shaft (38) and two guide rods (39); the rotating shaft (38) and the guide rod (39) are respectively matched with the guide block (37); one end of the rotating shaft (38) and one end of the guide rod (39) are respectively fixedly connected with the side surface of the paddle (4); the other end of the rotating shaft (38) is connected with the center of the guide block (37) in a rotating way; the other end of one guide rod (39) is rotatably connected with one end of the connecting plate (36); the guide block (37) is embedded in the side wall of the rotary cylinder (31) and is fixedly connected with the rotary cylinder (31).

5. A vertically adjustable pitch wind generator system according to claim 4, wherein: the side wall of the guide block (37) is provided with two arc-shaped grooves (371) which are symmetrically arranged and are not communicated with each other; the guide rod (39) is matched with the arc-shaped groove (371) and is connected with the arc-shaped groove in a sliding mode; and a spring (372) is fixedly connected between the guide rod (39) which is not rotationally connected with the connecting plate (36) and the bottom of the arc-shaped groove (371).

6. A vertically adjustable pitch wind generator system according to claim 5, wherein: a fixing plate (5) is fixedly connected to one end, far away from the paddle (4), of the rotating shaft (38); the fixed plate (5) is respectively fixedly connected with the two guide rods (39); the fixed plate (5) is arranged in the inner cavity of the rotary cylinder (31).

7. A vertically adjustable pitch wind generator system according to claim 3, wherein: the two connecting plates (36) are arranged in a manner of being centrosymmetric around the center of a circle on the top surface of the rotary cylinder (31).

8. A vertically adjustable pitch wind generator system according to claim 7, wherein: the included angle between the connecting plate (36) and the axis of the rotary cylinder (31) is an acute angle.