Split hub structure and wind turbine generator system hub part comprising same

Abstract

The utility model provides a kind of split type wheel hub structure and the wind generating set wheel hub part cover comprising it, comprising: first split, the first end of the first split is provided with first connecting hole;Second split, the first end of the second split is provided with second connecting hole corresponding the first connecting hole;Connecting portion, the connecting portion is passed in the first connecting hole and the second connecting hole, and the first split and the second split are detachably connected by the connecting portion.By being set into first split and second split detachable connection, so that the size of wheel hub structure can be further made larger, meet the increasing load and power generation demand requirement.Meanwhile, detachable split type wheel hub structure can overcome the problem that wheel hub size exceeds the size limit of land transportation and cannot meet the requirement of land transportation, and detachable split type wheel hub structure can overcome the problem of increasing size of wheel hub shape in the prior art, casting and production difficulty, and is convenient for manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a split hub structure and a wind turbine generator hub sleeve containing the same. Background Technology

[0002] The hub is a very important component in a wind turbine that connects the blades, pitch bearings, and main shaft. After the wind blows onto the blades, it transmits wind energy to the hub through the blade-pitch bearing-hub path. The hub then transmits the wind energy to the main shaft, converting it into rotational mechanical energy. Finally, the main shaft transmits the energy to the generator for power generation.

[0003] With the development of the wind power industry and the continuous increase in the power generation of individual wind turbine units, the load on the hub components is constantly increasing, requiring larger hubs to meet the growing load and power generation demands. When power generation reaches a certain level, the hub size will exceed the size limitations for land transportation, making it unsuitable for land transport. Meanwhile, maritime transportation is costly and requires production sites near seaports. Therefore, there is an urgent need for a hub that can overcome transportation size limitations and save costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is the defect of the existing technology where the hub size is too large, which restricts transportation and has poor economic performance. The present invention provides a split hub structure and a wind turbine generator hub sleeve containing the hub structure.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A split-type wheel hub structure, the split-type wheel hub structure comprising:

[0007] The first component has a first flange at its first end, and a first connection hole is provided on the first flange.

[0008] The second part has a second flange at its first end corresponding to the first flange, and the second flange has a second connecting hole.

[0009] The first flange has a flange boss on the side facing the second part, and the second flange has a flange groove on the side facing the first part corresponding to the flange boss;

[0010] Alternatively, the first flange may have a flange groove on the side facing the second part, and the second flange may have a flange boss on the side facing the first part corresponding to the flange groove;

[0011] A connecting part is provided, which passes through the first connecting hole and the second connecting hole, and the first split body and the second split body are detachably connected through the connecting part.

[0012] In this solution, by configuring the hub structure as a detachable combination of a first and a second split, the size of the hub structure can be further increased to meet the growing load and power generation demands. Simultaneously, the detachable split hub structure overcomes the problem of hub sizes exceeding land transport size limits, transforming a hub structure that was originally too large for land transport into one that can be transported by land. Furthermore, the detachable split hub structure overcomes the difficulties in casting and production associated with increasing hub dimensions in existing technologies, facilitating manufacturing. The first and second flanges are used to increase the size of the connection between the first and second splits, ensuring the strength of the hub structure after connection. The interlocking of flange bosses and flange grooves further enhances the stability of the connection between the first and second splits.

[0013] Preferably, the protruding dimension of the flange boss is the same as the recessed dimension of the flange groove, and the flange boss can be embedded in the flange groove.

[0014] In this solution, the above-mentioned settings limit the protruding size of the boss and the recessed size of the groove, ensuring that the flange boss can be effectively embedded in the flange groove and that the remaining areas of the first flange and the second flange used for connection can fit tightly, thereby improving connection stability and reliability.

[0015] Preferably, the first connecting holes are provided in at least two rows, one row of which is provided in the flange boss or the flange groove, and the second connecting holes are provided in at least two rows, one row of which is provided in the flange boss or the flange groove.

[0016] In this solution, the stability and reliability of the connection are ensured by increasing the number of rows of connection holes.

[0017] Preferably, the first or second split body is provided with a pitch drive interface, several maintenance holes and a hoisting hole.

[0018] In this scheme, the above-mentioned settings facilitate the maintenance and hoisting of the first or second unit, and also facilitate the installation of a drive structure, such as a pitch drive.

[0019] Preferably, the pitch drive interface is provided in two sets, and both sets of the pitch drive interface can be used to install pitch bearings.

[0020] Alternatively, one set of the pitch drive interfaces is used to install the pitch bearing, and the other set of the pitch drive interfaces is used to install the blade locking device.

[0021] In this solution, the reliability of the blades is improved by increasing the number of pitch drive interfaces to increase the number of pitch bearings, or by setting a locking device.

[0022] Preferably, the first and second parts are further provided with a plurality of process holes, which are arranged circumferentially on the periphery of the pitch drive interface.

[0023] In this solution, the above-mentioned setup facilitates the processing of the internal structures of the first and second parts, or allows the hoisting structure to be extended into the first and second parts for hoisting.

[0024] Preferably, the first and second parts are further provided with reinforcing webs, which are located in the area where the process hole is located.

[0025] In this solution, the above-mentioned settings are used to ensure the structural strength of the area where the process holes are located.

[0026] Preferably, the thickness of the reinforcing web is greater than the wall thickness around the process hole, and the reinforcing web of the first part is connected to the reinforcing web of the second part to form a ring structure.

[0027] In this scheme, by setting the thickness of the reinforcing web to be greater than the thickness of the process hole, and after the first and second parts are connected, the reinforcing web of the first part and the reinforcing web of the second part are connected to form a complete ring structure, so as to further enhance the structural strength of the area where the process hole is located.

[0028] Preferably, a fairing interface is provided on the periphery of the pitch drive interface.

[0029] In this design, the above-mentioned configuration facilitates the installation of the fairing onto the wheel hub structure.

[0030] A wind turbine hub sleeve, the wind turbine hub sleeve comprising the split hub structure as described above.

[0031] In this design, the wind turbine hub assembly includes the aforementioned split-type hub structure. Because the first and second parts of the split-type hub structure are detachably connected, its size can be further increased to meet greater load and power generation requirements. It also facilitates transportation and manufacturing, ensures structural reliability, and guarantees the safe operation of the turbine.

[0032] The significant advantages of this invention are as follows: By configuring the hub structure as a detachable combination of a first and a second split component, the size of the hub can be further increased to meet the growing demands for load and power generation. Simultaneously, the detachable split hub structure overcomes the problem of hub sizes exceeding land transport limitations, transforming a previously unsuitable hub for land transport into one that can be used for such transportation. Furthermore, the detachable split hub structure overcomes the difficulties in casting and manufacturing associated with increasing hub dimensions in existing technologies, facilitating manufacturing. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a split-type wheel hub structure according to a preferred embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of the structure of the first component of a preferred embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram of the flange boss in a preferred embodiment of the present invention.

[0036] Figure 4 This is a schematic diagram of the structure of the second component of a preferred embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] First Part 1

[0039] First connecting hole 11

[0040] First flange 12

[0041] Flange boss 121

[0042] Second part 2

[0043] Second connecting hole 21

[0044] Second flange 22

[0045] Flange Groove 221

[0046] Connecting part 3

[0047] Pitch drive interface 4

[0048] Maintenance hole 5

[0049] Lifting Hole 6

[0050] Process Hole 7

[0051] Strengthened web plate 8

[0052] Shielding Interface 9 Detailed Implementation

[0053] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0054] This embodiment provides a split-type wheel hub structure, the specific structure of which is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the split wheel hub structure includes:

[0055] The first component 1 has a first connecting hole 11 at its first end;

[0056] The second part 2, the first end of the second part 2 is provided with a second connecting hole 21 corresponding to the first connecting hole 11;

[0057] The connecting part 3 passes through the first connecting hole 11 and the second connecting hole 21, and the first split body 1 and the second split body 2 are detachably connected through the connecting part 3.

[0058] Specifically, the first component 1 and the second component 2 form a partial structure of a wheel hub. The first end surface of the first component 1 is flat, and the first end surface of the second component 2 is flat, so that a complete wheel hub structure is formed when the first component 1 is stacked on the second component 2. The first connecting hole 11 and the second connecting hole 21 can be through holes or threaded holes. The connecting part 3 is a bolt assembly in the prior art, including a bolt and a nut, so that the bolt is inserted into the first connecting hole 11 and the second connecting hole 21, and the bolt is locked by the nut to achieve a detachable connection between the first component 1 and the second component 2. Along the height direction of the split wheel hub structure, the height of the first component 1 and the second component 2 can be the same, which allows the size of the first component 1 and the second component 2, which are manufactured separately, to be further increased. That is, the detachable split wheel hub structure can overcome the problems of increased wheel hub size, casting and production difficulties in the prior art, and is easy to manufacture. Furthermore, the detachable, modular hub structure overcomes the problem of hub sizes exceeding land transport size limitations, thus transforming a hub structure that was originally too large for land transport into one that can be used for land transport. The increased size of the first and second components allows for the combination of these components to form an even larger hub structure, thereby meeting the ever-increasing demands for load and power generation.

[0059] Of course, in other embodiments, the heights of the first part 1 and the second part 2 may also be different, which can also increase the size of the separately manufactured first part 1 or second part 2, meet the needs of land transportation, and form a larger wheel hub structure than the one-piece wheel hub structure.

[0060] In this embodiment, a first flange 12 is provided at the first end of the first part 1, and a second flange 22 is provided at the first end of the second part 2 corresponding to the first flange 12. A first connecting hole 11 is provided on the first flange 12, and a second connecting hole 21 is provided on the second flange 22. The first flange 12 is flush with the side facing the second flange 22, and the second flange 22 is flush with the side facing the first flange 12.

[0061] Specifically, the first flange 12 is disposed at the first end of the first segment 1, i.e., the end for connection with the second segment 2. The surface of the first flange 12 is flush with the surface of the second flange 22, and the outer edge of the first flange 12 extends outward toward the hub structure, with a thickness greater than the thickness of the web of the first segment 1. Similarly, the second flange 22 is disposed at the first end of the second segment 2, i.e., the end for connection with the first segment 1. The surface of the second flange 22 is flush with the surface of the first flange 12, and the outer edge of the second flange 22 extends outward toward the hub structure, with a thickness greater than the thickness of the web of the second segment 2. By utilizing the outward extension of the first flange 12 and the second flange 22, the dimensions of the connection portion between the first segment 1 and the second segment 2 are increased, ensuring the strength of the hub structure after connection.

[0062] In cross-section, the first flange 12 has a closed triangular structure with its ends connected, and the second flange 22 has a corresponding closed triangular structure. Compared to other flanges, the structural strength of the first flange 12 and the second flange 22 is further guaranteed.

[0063] Furthermore, the flush sides of the first flange 12 and the second flange 22 used for connection enable the first split 1 and the second split to form a complete hub structure after connection, avoiding the situation where the local size of the hub structure is too large when the hub structure is connected to form a whole, making it impossible to install to the generator set hub sleeve.

[0064] In this embodiment, a flange boss 121 is provided on the side of the first flange 12 facing the second sub-body 2, and a flange groove 221 is provided on the side of the second flange 22 facing the first sub-body 1 corresponding to the flange boss 121.

[0065] Specifically, the flange boss 121 is a protrusion on the surface of the first flange 12 facing the second split 2, and the flange groove 221 is a recess on the side of the second flange 22 facing the first split 1. The dimensions of the protrusion and the recess along the outward extension direction of the first flange 12 and the second flange 22 are smaller than the extension dimensions of the first flange 12 and the second flange 22 themselves. The protrusion and the recess cooperate to avoid the risk of relative slippage between the two parts of the entire hub during rotation by using a snap-fit ​​method, thereby improving the stability and reliability of the connection between the first split 1 and the second split 2. It can be understood that the protrusion and the recess are set along the height direction of the split hub structure.

[0066] In other embodiments, the positions of the flange protrusion 121 and the flange groove 221 can be interchanged. That is, the flange groove 221 is provided on the side of the first flange 12 facing the second sub-body 2, and the flange protrusion 121 is provided on the side of the second flange 22 facing the first sub-body 1 corresponding to the flange groove 221. This can also achieve the snap-fit ​​connection between the first flange 12 and the second flange 22, thereby improving the stability and reliability of the connection between the first sub-body 1 and the second sub-body 2.

[0067] In this embodiment, the protruding dimension of the flange boss 121 is the same as the recessed dimension of the flange groove 221, allowing the flange boss 121 to be embedded within the flange groove 221. By limiting the protruding dimension of the flange boss 121 and the recessed dimension of the flange groove 221, it is ensured that the flange boss 121 can be effectively embedded within the flange groove 221, and that the remaining areas of the sides of the first flange 12 and the second flange 22 used for connection can fit tightly together, thereby improving connection stability and reliability.

[0068] In this embodiment, at least two rows of first connecting holes 11 are provided, with one row of first connecting holes 11 disposed within the flange boss 121. At least two rows of second connecting holes 21 are provided, with one row of second connecting holes 21 disposed within the flange groove 221. Compared to providing only one row of first connecting holes 11 and one row of second connecting holes 21, increasing the number of rows of connecting holes increases the number of connection points when the first component 1 and the second component 2 are connected, thereby ensuring the stability and reliability of the connection.

[0069] In other embodiments, the first connecting holes 11 are provided in at least two rows. When the first flange 12 is provided with a flange groove 221, one row of the first connecting holes 11 is provided in the flange groove 221. The second connecting holes 21 are provided in at least two rows. When the second flange 22 is provided with a flange boss 121, one row of the second connecting holes 21 is provided in the flange boss 121.

[0070] In this embodiment, the first component 1 or the second component 2 is provided with a pitch drive interface 4, several maintenance holes 5 and a hoisting hole 6.

[0071] Specifically, maintenance holes 5 are located at the end of the first segment 1 opposite to the second segment 2, i.e., the second end of the first segment 1. Similarly, maintenance holes 5 are located at the second end of the second segment 2. This facilitates maintenance personnel entering and exiting the wheel hub structure for installation and maintenance. Furthermore, in this embodiment, maintenance holes 5 are also located on the sides of the first segment 1 and the second segment 2, i.e., on the webs of the first segment 1 and the second segment 2, thereby enabling installation and maintenance of different structures at different locations.

[0072] The lifting hole 6 is provided inside the first part 1 and the second part 2, and is located at the connection between two adjacent web plates of the first part 1 or the second part 2. The lifting hole 6 is provided to lift the first part 1 and the second part 2, which are larger in size.

[0073] The pitch drive interface 4 is located on the web of the first segment 1 or the second segment 2, and is positioned near the outer edge of the first segment 1 or the second segment 2 to facilitate the installation of the pitch drive structure. The pitch drive interface 4 and the maintenance hole 5 are staggered to prevent structural interference.

[0074] In this embodiment, two sets of pitch drive interfaces 4 are provided, and both sets of pitch drive interfaces 4 can be used to install pitch bearings (not shown in the figure).

[0075] Specifically, two sets of pitch drive interfaces 4 are respectively located on opposite sides of the web of the first split 1 and the second split 2. By increasing the number of pitch drive interfaces 4, the number of pitch bearings can be increased, thereby meeting the demand for higher power generation.

[0076] In other embodiments, one set of pitch drive interfaces 4 is used to install the pitch bearing, and another set of pitch drive interfaces 4 is used to install the blade locking device (not shown in the figure). By setting the blade locking device in one set of pitch drive interfaces 4, the blade locking device and the pitch bearing are integrated on the hub structure, which not only improves the reliability of the blade, but also improves the safety of use and saves the space originally required to install the blade locking device.

[0077] Of course, one set of pitch drive interfaces 4 is used to install pitch bearings, and the other set of pitch drive interfaces 4 can also be used as a spare interface, so that the pitch bearings can be directly installed on the spare pitch drive interface 4 under special working conditions.

[0078] In this embodiment, a plurality of process holes 7 are also provided on the first component 1 and the second component 2, and the process holes 7 are arranged circumferentially on the periphery of the pitch drive interface 4. By providing a plurality of process holes 7, it is convenient to process the internal structure of the first component 1 and the second component 2, or to extend the lifting structure into the first component 1 and the second component 2 for lifting. In addition, the number of process holes 7 is set as large as possible, so that the process holes 7 are arranged in a circumferential manner around the center of the pitch bearing mounting flange after the first component 1 and the second component 2 are connected, so as to facilitate the installation of blades.

[0079] In this embodiment, a reinforcing web 8 is also provided on the first part 1 and the second part 2, and the reinforcing web 8 is located in the area where the process hole 7 is located.

[0080] Specifically, the first segment 1 and the second segment 2 are provided with a web plate. The pitch drive interface 4, process hole 7 and some maintenance holes 5 are all provided on the web plate. The surface of the web plate facing the inside of the first segment 1 and the second segment 2 is provided with a reinforcing web plate 8. The reinforcing web plate 8 is integrally formed with the web plate to ensure the structural strength of the web plate with pitch drive interface 4, process hole 7 and some maintenance holes 5.

[0081] Furthermore, the thickness of the reinforcing web 8 is greater than the wall thickness around the process hole 7, and the reinforcing web 8 of the first part 1 is connected to the reinforcing web 8 of the second part 2 to form a ring structure.

[0082] Specifically, the reinforcing web 8 extends from the connection point of two adjacent webs to the connection point of two adjacent webs on the other side. The extension dimension is slightly larger than the diameter of the process hole 7. Compared to the web, the thickness of the reinforcing web 8 is greater than the thickness of the process hole 7, to ensure the structural strength of the area where the process hole 7 is located. At the same time, after the first part 1 and the second part 2 are connected, the reinforcing web 8 of the first part 1 and the reinforcing web 8 of the second part 2 can be spliced ​​together inside the first part 1 and the second part 2 to form a complete ring structure, thereby further strengthening the structural strength of the area where the process hole 7 is located.

[0083] In this embodiment, a fairing interface 9 is provided on the periphery of the pitch drive interface 4 to facilitate the subsequent installation of the fairing bracket onto the hub structure.

[0084] This embodiment also provides a wind turbine hub sleeve, which includes the aforementioned split hub structure. Because the first split part 1 and the second split part 2 are detachably connected, the size of the split hub structure can be further increased to meet greater load and power generation requirements. It also facilitates transportation and manufacturing, has a reliable structure, and provides assurance for the safe operation of the turbine.

[0085] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A split-type wheel hub structure, characterized in that, The split-type wheel hub structure includes: The first component has a first flange at its first end, and a first connection hole is provided on the first flange. The second part has a second flange at its first end corresponding to the first flange, and the second flange has a second connecting hole. The first flange has a flange boss on the side facing the second part, and the second flange has a flange groove on the side facing the first part corresponding to the flange boss; Alternatively, the first flange may have a flange groove on the side facing the second part, and the second flange may have a flange boss on the side facing the first part corresponding to the flange groove; A connecting part is provided, which passes through the first connecting hole and the second connecting hole, and the first split body and the second split body are detachably connected through the connecting part.

2. The split-type wheel hub structure as described in claim 1, characterized in that, The protruding dimension of the flange boss is the same as the recessed dimension of the flange groove, and the flange boss can be embedded in the flange groove.

3. The split-type wheel hub structure as described in claim 1, characterized in that, The first connecting hole is provided in at least two rows, one row of which is provided in the flange boss or the flange groove. The second connecting hole is provided in at least two rows, one row of which is provided in the flange boss or the flange groove.

4. The split-type wheel hub structure as described in claim 1, characterized in that, The first or second split unit is provided with a pitch drive interface, several maintenance holes and a hoisting hole.

5. The split-type wheel hub structure as described in claim 4, characterized in that, The pitch drive interface is provided in two sets, and both sets of the pitch drive interface can be used to install pitch bearings. Alternatively, one set of the pitch drive interfaces is used to install the pitch bearing, and the other set of the pitch drive interfaces is used to install the blade locking device.

6. The split-type wheel hub structure as described in claim 4, characterized in that, The first and second parts are also provided with a number of process holes, which are arranged circumferentially on the periphery of the pitch drive interface.

7. The split-type wheel hub structure as described in claim 6, characterized in that, The first and second parts are also provided with reinforcing webs, which are located in the area where the process hole is located.

8. The split-type wheel hub structure as described in claim 7, characterized in that, The thickness of the reinforcing web is greater than the wall thickness around the process hole, and the reinforcing web of the first part is connected to the reinforcing web of the second part to form a ring structure.

9. The split-type wheel hub structure as described in claim 4, characterized in that, A fairing interface is provided on the periphery of the pitch drive interface.

10. A hub sleeve for a wind turbine generator set, characterized in that, The wind turbine hub sleeve includes a split hub structure as described in any one of claims 1-9.

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