CN217813753U

CN217813753U - Impeller system of wind turbine generator

Info

Publication number: CN217813753U
Application number: CN202221854640.5U
Authority: CN
Inventors: 宁文钢; 朱少辉; 王岳峰; 王建华; 王书勇; 王森; 靳剑英; 武宝平; 王晓龙; 常远
Original assignee: Taiyuan Heavy Industry Co Ltd
Current assignee: Taiyuan Heavy Industry Co Ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-15
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses a wind turbine generator system impeller system, include: the device comprises a hub, a switching section, a variable pitch bearing and blades; one end surface of the switching section is connected with the hub, the other end surface of the switching section is connected with the blade, and a certain included angle is formed between the two end surfaces of the switching section and is used for adjusting the cone angle of the hub; and the outer ring of the variable-pitch bearing is connected with the other end face of the switching section, and the inner ring is connected with the blade and used for connecting the blade to the other end face of the switching section. In order to solve the problem that the cone angles of the hubs corresponding to different impeller diameters are different, the hub main bodies of the machine types with the same specification and different impeller diameters are standardized, a section of switching section with the cone angle is added between the hub and the variable-pitch bearing, the cone angle of the hub is adjusted through the switching section, the mold cost of the hub is reduced, and meanwhile, the production period is saved. Through increasing the switching section, can increase impeller diameter to a certain extent, promote complete machine generated energy.

Description

Wind turbine generator system impeller system

Technical Field

The utility model relates to a wind power generation technical field especially relates to a wind turbine generator system impeller system.

Background

Wind energy is one of the most representative renewable energy sources, and is of great significance to protect the environment, maintain ecological balance, reduce dependence on conventional energy sources and improve energy structures. In the wind generating set, blades are connected to a main shaft through a hub, and the main shaft transmits the rotation of the blades to a generator through a transmission system to finish wind power generation.

In the prior art, when a blade manufacturer or the length of a blade is changed each time, if the blade distance cannot meet the requirement, a hub and a hub die need to be redesigned, so that the production cycle is influenced, and the cost for manufacturing the die is increased.

SUMMERY OF THE UTILITY MODEL

For solving the part or whole technical problem that exist among the above-mentioned prior art, the utility model provides a wind turbine generator system impeller system. The technical scheme is as follows:

there is provided a wind turbine blade system comprising: the device comprises a hub, a switching section, a variable pitch bearing and blades; one end face of the switching section is connected with the hub, the other end face of the switching section is connected with the blade, and a certain included angle is formed between the two end faces of the switching section and is used for adjusting the cone angle of the hub; and the outer ring of the variable pitch bearing is connected with the other end surface of the switching section, and the inner ring of the variable pitch bearing is connected with the blade and is used for connecting the blade to the other end surface of the switching section.

In some alternative implementations, the axis of the adapter segment is a tilted straight line or an arc line, and the inner ring side surface of the adapter segment is shorter than the outer ring side surface.

In some optional implementations, the included angle between one end face and the other end face of the adapter segment is 5-10 °.

In some optional implementations, the adaptor section is detachably connected to the hub by a first connection assembly.

In some alternative implementations, the first connection assembly is a first connection bolt.

In some optional implementations, the adapter section and the pitch bearing are detachably connected through a second connection assembly.

In some alternative implementations, the second connection assembly is a second connection bolt.

In some optional implementations, the blade and the pitch bearing are detachably connected by a third connection assembly.

In some alternative implementations, the third connection assembly is a third connection bolt.

The utility model discloses technical scheme's main advantage as follows:

the utility model discloses a wind turbine generator system impeller system for solving the different problems of the wheel hub cone angle that different impeller diameters correspond, will standardize with the different impeller diameter model wheel hub main parts of specification, increase one section switching section that has the cone angle between wheel hub and the change oar bearing, adjust the wheel hub cone angle through the switching section, reduce wheel hub's mould expense, practice thrift production cycle simultaneously. Through increasing the switching section, can increase impeller diameter to a certain extent, promote complete machine generated energy.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 is a schematic structural diagram of an impeller system of a wind turbine provided in an embodiment of the present invention;

fig. 2 is a partial enlarged view of the wind turbine blade system according to an embodiment of the present invention.

Description of reference numerals:

the variable-pitch propeller comprises a hub 1, a first connecting assembly 2, a switching section 3, a second connecting assembly 4, a variable-pitch bearing 5, a third connecting assembly 6 and a blade 7.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following description will be given with reference to the embodiments of the present invention and the accompanying drawings, in which the technical solution of the present invention is clearly and completely described. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

The embodiment of the utility model provides a wind turbine generator system impeller system, as shown in attached 1 and 2, include: the device comprises a hub 1, a switching section 3, a variable pitch bearing 5 and blades 7; one end face of the switching section 3 is connected with the hub 1, the other end face of the switching section is connected with the blade 7, and a certain included angle is formed between the two end faces of the switching section 3 and is used for adjusting the taper angle of the hub 1; the outer ring of the variable pitch bearing 5 is connected with the other end face of the adapter section 3, and the inner ring is connected with the blade 7 and used for connecting the blade 7 to the other end face of the adapter section 3.

The embodiment of the utility model provides a wind turbine generator system, for solving the different problems of 1 cone angle of the wheel hub that different impeller diameters correspond, will be with the different impeller diameter model wheel hub 1 main parts standardization of specification, increase one section switching section 3 that has the cone angle between wheel hub 1 and change oar bearing 5, adjust 1 cone angle of wheel hub through switching section 3, reduce 1 mould expense of wheel hub, practice thrift production cycle simultaneously. Through increasing switching section 3, can increase impeller diameter to a certain extent, promote complete machine generated energy.

Adaptor 3 does the utility model provides an impeller system's core component, it is connected between blade 7 and wheel hub 1 for blade 7 of lug connection on wheel hub 1 among the prior art can form certain cone angle in the space after adaptor 3, and adaptor 3's concrete structure can be by multiple form, as long as can make between the both ends face form certain cone angle can. For example, the transition piece 3 may be a bent tubular structure. For another example, the adapter section 3 may be an inclined truncated cone structure. Alternatively, the axis of the transition section 3 may be a straight line or an arc that is inclined to achieve the curvature. As shown in fig. 2, the inner ring side of the transition piece 3 in the bent state is shorter than the outer ring side.

Alternatively, the angle between one end face and the other end face of the adapter segment 3 is 5-10 °, for example, 5 °, 7 °, 10 °, etc. The specific angle can be designed and manufactured according to the actual required angle of the blade tip to the tower barrel so as to meet the use requirements of different diameters of the blades 7. Fig. 1 and 2 show the case of an angle of 5 °.

In some optional implementation manners of this embodiment, the adaptor section 3 is detachably connected to the hub 1 through the first connection assembly 2, so that the adaptor section 3 can be conveniently mounted and replaced, and the adaptor sections 3 with different specifications can be mounted according to use requirements.

The first connecting component 2 can be a bolt connection, a clamping connection, or a detachable connecting component such as a pin shaft. Exemplarily, the first connection assembly 2 is a first connection bolt. The outer edge of the end face of the hub 1 opposite to the end face of the switching section 3 can be provided with corresponding through holes, and the first connecting bolt penetrates through the through holes and then is fixed by matching with nuts. Wherein, the quantity of first connecting bolt can be a plurality of, along the circumference interval evenly distributed of the contact surface of wheel hub 1 and changeover portion 3, improves and connects the steadiness.

In some optional implementation manners of this embodiment, the adapter section 3 and the pitch bearing 5 are detachably connected through the second connection assembly 4, so that the pitch bearing 5 is convenient to install and replace, and the pitch bearing 5 is convenient to overhaul.

The second connecting component 4 can be a bolt connection, a clamping connection, or a detachable connecting component such as a pin shaft. For example, the second connection assembly 4 may be a second connection bolt. The outer ring of the variable pitch bearing 5 and the outer edge of the other end face of the switching section 3 can be provided with corresponding through holes, and the second connecting bolt penetrates through the through holes and then is matched with the nut to be fixed. The number of the second connecting bolts can be multiple, and the outer rings of the outer ring of the variable pitch bearing 5 and the outer edge of the other end face of the switching section 3 are uniformly distributed at intervals along the circumferential direction, so that the connecting stability is improved.

In some optional implementations of the present embodiment, the blade 7 and the pitch bearing 5 are detachably connected by the third connection assembly 6, so that the blade 7 can be installed and replaced conveniently.

The third connecting assembly 6 can be a bolt connection, a clamping connection, or a detachable connecting assembly such as a pin shaft. For example, the third connection assembly 6 may be a third connection bolt. The inner ring of the variable pitch bearing 5 and the outer edge of the blade 7 can be provided with corresponding through holes, and the third connecting bolt penetrates through the through holes and then is matched with a nut to be fixed. The number of the third connecting bolts can be multiple, and the third connecting bolts are uniformly distributed on the inner ring of the variable pitch bearing 5 and the outer edge of the blade 7 at intervals along the circumferential direction, so that the connecting stability is improved.

Based on the above, in an embodiment, the switching section 3 is connected with the hub 1 through the first connecting bolt, the switching section 3 is connected with the pitch bearing 5 through the second connecting bolt, and the pitch bearing 5 is connected with the blade 7 through the third connecting bolt, so that compared with the prior art, the pitch bearing 5 and the hub 1 are not favorable for maintenance, and all connecting bolt maintenance points are transferred to the hub 1 in the embodiment, thereby facilitating maintenance in the subsequent operation process.

Optionally, as shown in fig. 2, a rounded corner may be provided at an end surface where the hub 1 contacts the adapting section 3, and a side surface of the adapting section 3 is of an arc-shaped structure, so that a surface of the connected impeller system is relatively smooth.

Alternatively, the size of the end surface of the adapter 3 connected to the hub 1 may be equal to or slightly smaller than the connecting surface of the hub 1. The size of the other end face of the adapter section 3 connected with the blade 7 can be larger than that of the end face of the blade 7 so as to reserve the installation space of the pitch bearing 5. Further, the adapter section 3 may be a structure with a diameter gradually reduced from the hub 1 to the blade 7 so as to adapt to the size of the end face of the hub 1 and the size of the end face of the blade 7.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are all referred to the placement state shown in the drawings.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind turbine blade system, comprising: the device comprises a hub, a switching section, a variable pitch bearing and blades;

one end face of the switching section is connected with the hub, the other end face of the switching section is connected with the blade, and a certain included angle is formed between the two end faces of the switching section and is used for adjusting the cone angle of the hub;

and the outer ring of the variable pitch bearing is connected with the other end surface of the switching section, and the inner ring of the variable pitch bearing is connected with the blade and is used for connecting the blade to the other end surface of the switching section.

2. The wind turbine blade system of claim 1, wherein the axis of the transition section is an inclined straight line or an arc line, and the inner ring side of the transition section is shorter than the outer ring side.

3. The wind turbine generator system impeller system according to claim 1, wherein an included angle between one end surface and the other end surface of the adapter section is 5-10 °.

4. The wind turbine system of claim 1, wherein the adaptor section is removably connected to the hub by a first connection assembly.

5. The wind turbine blade system of claim 4, wherein the first connection assembly is a first connection bolt.

6. The wind turbine generator system of claim 1, wherein the adaptor section and the pitch bearing are removably coupled by a second coupling assembly.

7. The wind turbine blade system of claim 6, wherein the second connection assembly is a second connection bolt.

8. The wind turbine generator system of claim 1, wherein the blade is removably coupled to the pitch bearing via a third coupling assembly.

9. The wind turbine blade system of claim 8, wherein the third connection assembly is a third connection bolt.