阅读说明：本技术 风轮和风力发电装置 (Wind wheel and wind power generation device ) 是由 李新凯 郭小江 叶昭良 唐巍 劳文欣 于 2021-09-09 设计创作，主要内容包括：本发明提供一种风轮和风力发电装置,风轮,包括：安装舱,多个叶根座,多个叶片,变桨推块,变桨推杆以及输出轴,安装舱上开设有多个安装孔,多个安装孔围绕安装舱的旋转轴呈圆周阵列；每个安装孔内均设置一个叶根座,每个叶根座均能够相对安装舱绕所对应的安装孔的轴线转动；每个叶根座均与一个叶片固定连接,并能够随所对应的叶根座同步旋转；变桨推块设置于安装舱内,并与每个叶根座传动连接,变桨推块能够沿安装舱的旋转轴往复移动,并在移动过程中推动所有叶根座同步转动。通过设置变桨推块来推动叶根座转动,实现变桨的目的,不仅结构简单,便于实施,而且变桨的控制精度高,控制更加灵敏和稳定。(The invention provides a wind wheel and a wind power generation device, wherein the wind wheel comprises: the blade comprises an installation cabin, a plurality of blade root seats, a plurality of blades, a variable pitch push block, a variable pitch push rod and an output shaft, wherein a plurality of installation holes are formed in the installation cabin and are arranged in a circumferential array around a rotating shaft of the installation cabin; each mounting hole is internally provided with a blade root seat, and each blade root seat can rotate around the axis of the corresponding mounting hole relative to the mounting cabin; each blade root seat is fixedly connected with one blade and can synchronously rotate along with the corresponding blade root seat; the variable-pitch push block is arranged in the installation cabin and is in transmission connection with each blade root seat, and the variable-pitch push block can reciprocate along a rotating shaft of the installation cabin and push all the blade root seats to rotate synchronously in the moving process. The blade root seat is pushed to rotate by the arrangement of the variable-pitch push block, the purpose of changing the pitch is achieved, the structure is simple, the implementation is convenient, the control precision of the variable pitch is high, and the control is sensitive and stable.)

1. A wind turbine (10), comprising:

the mounting device comprises a mounting cabin (11), wherein a plurality of mounting holes (110) are formed in the mounting cabin (11), and the plurality of mounting holes (110) are arranged in a circumferential array around a rotating shaft of the mounting cabin (11);

the blade root seats (16) are arranged in the mounting holes (110), and each blade root seat (16) can rotate around the axis of the corresponding mounting hole (110) relative to the mounting cabin (11);

a plurality of blades (12), each blade root seat (202) is fixedly connected with one blade (12) and can synchronously rotate along with the corresponding blade root seat (16);

the variable-pitch push block (13) is arranged in the installation cabin (11) and is in transmission connection with each blade root seat (202), and the variable-pitch push block (13) can reciprocate along a rotating shaft of the installation cabin (11) and pushes all the blade root seats (16) to synchronously rotate in the moving process;

the variable pitch push rod (14), the variable pitch push rod (14) is connected with the variable pitch push block (13) and is used for pushing the variable pitch push block (13) to reciprocate along the rotating shaft of the installation cabin (11);

the output shaft (15) is fixedly connected with the installation cabin (11) and is coaxially arranged with a rotating shaft of the installation cabin (11).

2. The wind turbine (10) according to claim 1, wherein the pitch-controlled push block (13) has a plurality of first mating surfaces (131), each of the first mating surfaces (131) has a sliding slot (132) formed thereon, and the sliding slot (132) extends in a direction deviating from the rotation axis of the installation cabin (11);

the end part of each blade root seat (16) is provided with a second matching surface (161), a sliding block (162) is fixedly arranged on the second matching surface (161), and the sliding block (162) deviates from the rotating shaft of the corresponding blade root seat (16);

each first matching surface (131) is matched with one second matching surface (161) so that the sliding block (162) is arranged in the sliding groove (132), and the sliding block (162) can slide relative to the corresponding sliding groove (132) so that the blade root seat (16) rotates around the axis of the corresponding mounting hole (110) relative to the mounting cabin (11).

3. The wind turbine (10) of claim 2, characterized in that the runner (132) extends in a straight line or in a curved line.

4. The wind turbine (10) according to claim 2, wherein the number of the blade root seats (16) is three, the number of the blades (12) is three, and the pitch propeller (13) is triangular prism shaped.

5. The wind turbine (10) according to claim 2, wherein the chute (132) extends in a straight line, the chute (132) extending in a direction with an angle in the range of 10 ° -30 ° to the direction of the axis of rotation of the installation compartment (11).

6. The wind turbine (10) according to claim 1, wherein the mounting hole (110) has an annular guide groove (111) formed therein, and the root seat (16) has a circular guide plate (163) formed thereon, and the circular guide plate (163) is fitted in the corresponding annular guide groove (111).

7. The wind turbine (10) of claim 1, wherein the blade root seat (16) has a mounting sleeve (164), and the root of the blade (12) is inserted into the mounting sleeve (164) and fixedly connected to the mounting sleeve (164).

8. The wind turbine (10) of claim 7, wherein the mounting sleeve (164) defines a plurality of slots (165) in a circumferential direction thereof, and the mounting sleeve (164) defines a plurality of attachment holes (166) spaced around the mounting sleeve (164) in the circumferential direction thereof.

9. The wind turbine (10) according to claim 1, wherein the installation nacelle (11) has a guiding cavity (112) therein, and the pitch propeller (13) is arranged in the guiding cavity (112) and is in guiding engagement with the guiding cavity (112).

10. The wind turbine (10) according to claim 1, wherein the installation compartment (11) comprises a front compartment (113) and a rear compartment (114), the front compartment (113) being fixedly connected to the rear compartment (114), each of the installation holes (110) being formed in the front compartment (113) and the rear compartment (114).

11. The wind turbine (10) according to claim 1, wherein the output shaft (15) has a central shaft hole, the pitch push rod (14) is arranged through the central shaft hole, and the pitch push rod (14) and the output shaft (15) are coaxially arranged.

12. A wind power plant, characterized by comprising a wind rotor (10) according to any of claims 1-11.

13. Wind power plant according to claim 12, characterized in that the wind power plant is arranged on water or on land.

14. Wind power plant according to claim 12, characterized in that the number of wind wheels (10) is one or two.

Technical Field

The invention relates to the technical field of wind power generation, in particular to a wind wheel and a wind power generation device.

Background

With the rapid development of installed capacity of wind power, the current mainstream wind turbine generator adopts a single-wind-wheel horizontal shaft form and develops towards large scale, but with the large scale development of the wind turbine generator, the core key technology of the wind turbine generator is limited, and the development of a new-form efficient wind energy conversion device is urgently needed.

In the related art, there still exist many problems in the pitch adjustment of the wind turbine, for example, the internal structure of the wind turbine becomes complicated and the pitch precision is low due to the need of pitch adjustment. Low sensitivity, poor installation stability of the blade and the like.

Therefore, how to set up the structure of wind wheel can make the wind wheel realize changing the oar while, can guarantee the simple of structure again, change oar precision improvement, stability improvement become the technological problem that this field awaits a urgent need to solve.

Disclosure of Invention

The core of the invention is that a variable pitch component is added on the test platform, thereby realizing automatic control of blade variable pitch.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an embodiment of the invention proposes a wind turbine comprising:

the installation cabin is provided with a plurality of installation holes, and the installation holes are arranged in a circumferential array around a rotating shaft of the installation cabin;

each blade root seat is arranged in each mounting hole and can rotate around the axis of the corresponding mounting hole relative to the mounting cabin;

each blade root seat is fixedly connected with one blade and can synchronously rotate along with the corresponding blade root seat;

the variable pitch push block is arranged in the installation cabin and is in transmission connection with each blade root seat, and can reciprocate along a rotating shaft of the installation cabin and push all the blade root seats to synchronously rotate in the moving process;

the variable pitch push rod is connected with the variable pitch push block and is used for pushing the variable pitch push block to reciprocate along a rotating shaft of the installation cabin;

and the output shaft is fixedly connected with the installation cabin and is coaxially arranged with the rotating shaft of the installation cabin.

The wind wheel of the embodiment of the invention at least has the following technical effects: the blade root seat is pushed to rotate by the arrangement of the variable-pitch push block, the purpose of changing the pitch is achieved, the structure is simple, the implementation is convenient, the control precision of the variable pitch is high, and the control is sensitive and stable.

Optionally, the variable-pitch push block has a plurality of first matching surfaces, each first matching surface is provided with a sliding groove, and the extending direction of the sliding groove deviates from the rotating shaft of the installation cabin;

the end part of each blade root seat is provided with a second matching surface, a sliding block is fixedly arranged on the second matching surface, and the sliding block deviates from the rotating shaft of the corresponding blade root seat;

each first matching surface is matched with one second matching surface, so that the sliding block is arranged in the sliding groove, and the sliding block can slide relative to the corresponding sliding groove, so that the blade root seat rotates around the axis of the corresponding mounting hole relative to the mounting cabin.

Optionally, the sliding groove extends along a straight line or along a curved line.

Optionally, the number of the blade root seats is three, the number of the blades is three, and the pitch-variable push block is triangular prism-shaped.

Optionally, the sliding groove extends along a straight line, and an included angle between the extending direction of the sliding groove and the direction of the rotating shaft of the installation cabin ranges from 10 degrees to 30 degrees.

Optionally, an annular guide groove is formed in the mounting hole, a circular guide plate is arranged on the blade root seat, and the circular guide plate is matched in the corresponding annular guide groove.

Optionally, the blade root seat has a mounting sleeve, and the root of the blade is inserted into the mounting sleeve and is fixedly connected to the mounting sleeve.

Optionally, a plurality of slots are formed in the circumferential direction of the mounting sleeve, a plurality of connecting holes are formed in the mounting sleeve, and the connecting holes are distributed around the circumferential direction of the mounting sleeve at intervals.

Optionally, a guide cavity is formed in the installation cabin, and the variable-pitch push block is arranged in the guide cavity and is in guide fit with the guide cavity.

Optionally, the installation cabin includes a front cabin and a rear cabin, the front cabin is fixedly connected with the rear cabin, and each installation hole is formed in the front cabin and the rear cabin.

Optionally, the output shaft has a central shaft hole, the variable pitch push rod penetrates through the central shaft hole, and the variable pitch push rod and the output shaft are coaxially arranged.

The embodiment of the invention also provides a wind power generation device which comprises the wind wheel.

Optionally, the wind power generation device is arranged on water or land.

Optionally, the number of wind wheels is one or two.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic perspective view of a wind turbine according to an embodiment of the present invention;

figure 2 is an exploded schematic view of a wind rotor according to an embodiment of the present invention;

figure 3 is a schematic partial perspective view of a wind rotor according to an embodiment of the invention;

figure 4 is a schematic partial end view of a wind rotor according to an embodiment of the invention;

FIG. 5 is a schematic perspective view of an installation bay according to an embodiment of the present invention;

FIG. 6 is a side view of an installation bay of an embodiment of the invention;

FIG. 7 is a schematic cross-sectional view taken along A-A of FIG. 6;

FIG. 8 is a perspective view of a blade root seat according to an embodiment of the present invention;

FIG. 9 is a schematic perspective view of a pitch push block according to an embodiment of the invention;

FIG. 10 is a side view of a pitch pusher block according to an embodiment of the invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 1 and 2, the present embodiment provides a wind turbine 10 including: the mounting cabin 11, a plurality of blade root seats 16, a plurality of blades 12, a variable pitch push block 13, a variable pitch push rod 14 and an output shaft 15.

In the present embodiment, the number of the blade root 16 and the number of the blade 12 are 3, and may be 2, 4, or the like, and the present invention does not specifically limit the number of the blade root 16 and the blade 12.

With reference to fig. 5-7, the installation compartment 11 is provided with a plurality of installation holes 110, and the installation holes 110 are arranged in a circumferential array around the rotation axis of the installation compartment 11; with reference to fig. 3 to 4, each mounting hole 110 is provided with a root seat 16 therein, and each root seat 16 can rotate around the axis of the corresponding mounting hole 110 relative to the mounting compartment 11.

Each blade root seat 16 is fixedly connected with one blade 12 and can synchronously rotate along with the corresponding blade root seat 16; the root seat 16 and the blade 12 may be integrally formed, or the root seat 16 and the blade 12 may be two separate components fixedly connected by a connecting member. Therefore, the two parts are fixed relatively.

The variable-pitch push block 13 is arranged in the installation cabin 11 and is in transmission connection with each blade root seat 16, and the variable-pitch push block 13 can reciprocate along a rotating shaft of the installation cabin 11 and push all the blade root seats 16 to synchronously rotate in the moving process; that is to say, in the process that the variable pitch push block 13 moves along the rotating shaft of the installation cabin 11, the blade root seat 16 can be pushed to rotate, so that the blade 12 also rotates, the pitch angle of the blade 12 is adjusted, and the purpose of changing the pitch of the wind wheel is achieved.

Further, the variable pitch push rod 14 is connected with the variable pitch push block 13 and used for pushing the variable pitch push block 13 to reciprocate along the rotating shaft of the installation cabin 11; the variable pitch push rod 14 plays a role in transmitting power, the external driving component can be connected with the variable pitch push rod 14, and the variable pitch push block 13 is pushed to move through the variable pitch push rod 14, so that the variable pitch of the wind wheel is controlled.

Further, the output shaft 15 is fixedly connected with the installation cabin 11 and is coaxially arranged with a rotating shaft of the installation cabin 11, the output shaft 15 is used for outputting torque, and the torque is output through the output shaft 15 in the rotating process of the wind wheel.

In the above scheme, when the wind wheel needs to be subjected to pitch variation, the pitch variation can be realized only by pushing the pitch variation push rod 14, the operation is simple, the pitch variation amplitude can be adjusted according to the pushing distance, and the sensitivity is high. Moreover, the mode of controlling the rotation of the blade root seat 16 by the variable pitch push block 13 enables the overall structure of the wind wheel 10 to be more compact and the stability to be better.

In some embodiments, with reference to fig. 9 and 10, the pitch push block 13 has a plurality of first mating surfaces 131, each of the first mating surfaces 131 has a sliding groove 132, and the sliding groove 132 extends in a direction away from the rotation axis of the installation cabin 11; the end of each blade root seat 16 is provided with a second matching surface 161, a sliding block 162 is fixedly arranged on the second matching surface 161, and the sliding block 162 deviates from the rotating shaft of the corresponding blade root seat 16; each first engagement surface 131 engages with one second engagement surface 161, so that the sliding block 162 is disposed in the sliding slot 132, and the sliding block 162 can slide relative to the corresponding sliding slot 132, so that the root seat 16 can rotate relative to the mounting compartment 11 around the axis of the corresponding mounting hole 110.

By setting the extending direction of the sliding groove 132 to deviate from the rotating shaft of the installation cabin 11, and simultaneously, the sliding block 162 deviates from the corresponding rotating shaft of the blade root seat 16, the blade root seat 16 can be easily driven to rotate by the movement of the variable pitch push block 13, so that the angle adjustment of the blade root seat 16 can be realized only by providing a small driving force; moreover, the structure has a self-locking function, namely: the blade root base 16 can rotate passively with the movement of the pitch push block 13, but the blade root base 16 cannot push the movement of the pitch push block 13 through the rotation of the blade root base 16.

In some embodiments, the sliding groove 132 extends along a straight line or along a curved line, that is, the sliding groove 132 may be a straight line groove or a curved line groove. As shown in fig. 9 and 10, the slide groove 132 is a linear groove.

In some embodiments, the number of blade root seats 16 is three, the number of blades 12 is three, and the shape of the pitch propeller 13 is triangular prism-shaped. The three side surfaces of the variable pitch push block 13 are all first matching surfaces 131, and each first matching surface 131 is provided with a sliding groove 132.

In some embodiments, referring to fig. 10, the chute 132 extends along a straight line, the angle a between the direction of extension of the chute 132 and the direction of the axis of rotation of the mounting compartment 11 being in the range of 10 ° -30 °, for example a may be equal to 15 °, 18 °, 20 °, etc.

In some embodiments, referring to fig. 7, the mounting hole 110 has an annular guide groove 111 formed therein, and referring to fig. 8, the blade root seat 16 has a circular guide plate 163 disposed thereon, and the circular guide plate 163 is fitted into the corresponding annular guide groove 111. As shown in fig. 3 and 4, the circular guide plate 163 and the annular guide groove 111 cooperate to limit the blade root base 16 from being disengaged from the mounting hole 110 on one hand, and to play a role of circumferential guiding for the rotation of the blade root base 16 on the other hand, so as to ensure the precision of pitch variation.

In some embodiments, referring to fig. 8, the root seat 16 has a mounting sleeve 164, and the root of the blade 12 is inserted into the mounting sleeve 164 and fixedly attached to the mounting sleeve 164. The mounting sleeve 164 serves to connect the stationary blade 12 to ensure a stable connection therebetween.

In some embodiments, the mounting sleeve 164 defines a plurality of slots 165 along a circumferential direction thereof, and the mounting sleeve 164 defines a plurality of connecting holes 166 spaced about the circumferential direction of the mounting sleeve 164. When installing blade 12, can insert the root of blade 12 in the installation sleeve 164 earlier, owing to be provided with many slits 165, even the internal diameter of installation sleeve 164 slightly is less than the external diameter of the root of blade 12, also can realize the insertion of blade 12 root to make installation sleeve 164 form certain extrusion to blade 12 root, then realize blade 12 and blade root seat 16's stable connection through connecting pieces such as mounting bolt in connecting hole 166.

In some embodiments, the mounting nacelle 11 has a guiding cavity 112 therein, and the pitch push block 13 is disposed in the guiding cavity 112 and is in guiding fit with the guiding cavity 112. Through the arrangement of the guide cavity 112, the moving direction of the variable pitch push block 13 is more stable, no shaking occurs, and high-precision variable pitch adjustment is facilitated.

In some embodiments, the installation compartment 11 includes a front compartment 113 and a rear compartment 114, the front compartment 113 is fixedly connected to the rear compartment 114, and each installation hole 110 is formed on the front compartment 113 and the rear compartment 114. So set up, be favorable to the assembly of whole wind wheel.

In some embodiments, referring to fig. 2, the output shaft 15 has a central shaft hole, the pitch push rod 14 is disposed through the central shaft hole, and the pitch push rod 14 and the output shaft 15 are coaxially disposed.

The present embodiment also provides a wind power generation apparatus including the wind turbine 10 of any of the above embodiments.

In some embodiments, the wind power plant is disposed on water or land. That is, the wind power generation device can be used for land power generation and also can be used for water power generation.

In some embodiments, the number of wind wheels 10 is one or two. That is, the wind power generation device may be provided with two wind turbines 10 at the same time, or may be provided with only one wind turbine 10.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.