Generator and wind generating set

Abstract

The utility model relates to a generator and a wind generating set. The generator comprises a rotor structure which is provided with a plurality of axial channels and a plurality of circumferential channels. The axial channels are arranged at intervals in the circumferential direction of the rotor structure, and each axial channel penetrates through the end faces of the two axial ends of the rotor structure. The circumferential channels are arranged at intervals in the axial direction of the rotor structure, and each circumferential channel is arranged in a surrounding mode in the circumferential direction of the rotor structure. Each axial channel is communicated with at least one circumferential channel, and the circumferential channels penetrate through the outer circumferential surface of the rotor structure; the stator sleeves the outer side of the rotor structure, an annular channel is formed between the stator and the rotor structure, the annular channel is through in the axial direction of the rotor structure, each circumferential channel is communicated with the annular channel, the stator is provided with a plurality of radial channels, the radial channels are arranged at intervals in the circumferential direction of the stator, the first end of each radial channel is communicated with the annular channel, and the second end of each radial channel is communicated with the annular channel. The second end of each radial channel penetrates through the outer surface of the stator. The circulating area of cooling air can be increased, and the cooling effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and particularly to a generator and a wind turbine generator set. Background Art

[0002] A generator is an important component of a wind turbine generator set. The generator mainly includes a housing, a stator, and a rotor. An air inlet and an air outlet are provided on the housing. The stator and the rotor are coaxially sleeved and arranged inside the housing, and an air gap is formed between the rotor and the stator.

[0003] During the operation of the generator, a large amount of heat is generated. Currently, most generators use air cooling for cooling, that is, an air inlet and an air outlet are provided on the housing. Cooling air enters the interior of the housing through the air inlet and passes through the air gap between the rotor and the stator, and is discharged through the air outlet.

[0004] However, it is found in actual use that due to the limitation of the assembly requirements between the stator and the rotor, the cross-sectional area of the air flow at the air gap between the two is very small, resulting in high wind resistance and large losses, and thus the cooling effect of the generator is poor. Summary of the Invention

[0005] The embodiments of the present application provide a generator and a wind turbine generator set, which can effectively increase the flow area of the cooling air at the stator and the rotor, reduce the wind resistance and losses, and improve the cooling effect.

[0006] The embodiments of the present application provide a generator, wherein the generator includes:

[0007] A rotor structure provided with a plurality of axial channels and a plurality of circumferential channels; each of the axial channels is circumferentially spaced along the rotor structure, and each of the axial channels penetrates through the end faces at both axial ends of the rotor structure; each of the circumferential channels is axially spaced along the rotor structure, and each of the circumferential channels is circumferentially arranged around the rotor structure; each of the axial channels is communicated with at least one of the circumferential channels, and the circumferential channels penetrate through the outer peripheral surface of the rotor structure;

[0008] A stator sleeved outside the rotor structure, an annular channel is formed between the stator and the rotor structure, the annular channel is axially through along the rotor structure, each of the circumferential channels is communicated with the annular channel, a plurality of radial channels are provided on the stator, each of the radial channels is circumferentially spaced along the stator, a first end of each of the radial channels penetrates through the inner surface of the stator and is communicated with the annular channel, and a second end of each of the radial channels penetrates through the outer surface of the stator.

[0009] According to one aspect of the embodiments of the present application, the projection of each of the radial channels along its through direction falls into the projection of one of the circumferential channels.

[0010] According to one aspect of the embodiments of the present application, the rotor structure includes:

[0011] A bracket member, each of the axial channels is provided in the bracket member, and each axial channel has at least one communication port, and each communication port can communicate with one of the circumferential channels;

[0012] A magnet assembly, detachably connected to the circumferential side of the bracket member, and each of the circumferential channels is provided in the magnet assembly.

[0013] According to one aspect of the embodiments of the present application, the bracket member includes:

[0014] A central seat, the projection along the axial direction of the rotor structure is circular;

[0015] A plurality of connecting pipes, the connecting pipes are through along their axial directions, the connecting pipes are arranged at intervals along the circumferential direction of the central seat and fixedly connected to the central seat, and the communication ports are opened on the sides of the connecting pipes facing away from the central seat.

[0016] According to one aspect of the embodiments of the present application, the bracket member further includes a plurality of support plates, at least one support plate is provided between every two adjacent connecting pipes, the support plates are respectively fixedly connected to the two adjacent connecting pipes, and the outer peripheral surfaces of the support plates and the outer peripheral surfaces of the connecting pipes are connected to form a continuous circumferential surface.

[0017] According to one aspect of the embodiments of the present application, a gap is formed between each support plate and the central seat, the bracket member further includes a plurality of sealing plates, and both ends of each gap along the axial direction of the rotor structure are respectively closed by the sealing plates, and the sealing plates are respectively fixedly connected to the connecting pipes, the support plates and the central seat.

[0018] According to one aspect of the embodiments of the present application, the magnet assembly includes a plurality of magnet rings, the magnet rings are arranged at intervals along the axial direction of the rotor structure, and a circumferential channel is formed between every two adjacent magnet rings;

[0019] Each magnet ring includes a plurality of magnets, the magnets are arranged along the circumferential direction of the rotor structure, and each magnet is detachably connected to the bracket member.

[0020] According to one aspect of the embodiments of the present application, each magnet ring is provided with a plurality of notches that penetrate along the axial direction of the rotor structure, and the notches are arranged at intervals along the circumferential direction of the rotor structure.

[0021] According to one aspect of the embodiments of the present application, along the axial direction of the rotor structure, the projections of the notches of each magnet ring coincide with the projections of the notches of the adjacent magnet ring;

[0022] and / or, each notch of each magnet ring is formed at the connection between two adjacent magnets.

[0023] According to one aspect of the embodiments of the present application, the generator further includes a housing, the rotor structure and the stator are both arranged inside the housing, the housing is provided with two air inlet areas and one air outlet area, the two air inlet areas are arranged at intervals along the axial direction of the rotor structure, and the two air inlet areas are respectively arranged at both ends of the axial direction of the rotor structure, the air outlet area is located between the two air inlet areas, and the air outlet area corresponds to the second ends of the respective radial channels.

[0024] According to one aspect of the embodiments of the present application, each air inlet area is provided with a plurality of air inlets, the air inlets are arranged at intervals along the circumferential direction of the rotor structure, and a filter assembly is provided on the outer peripheral surface of the housing corresponding to each air inlet, and the filtering area of the filter assembly is larger than the flow-through area of the air inlet.

[0025] According to one aspect of the embodiments of the present application, the filter assembly includes:

[0026] A filter box, which is buckled on the corresponding air inlet, and the filter box is detachably connected to the housing; the filter box has a bottom plate, and the bottom plate is arranged corresponding to the air inlet; a plurality of first filter holes are provided on the bottom plate;

[0027] A filter element, which is connected to the bottom plate and covers each first filter hole, and the sum of the opening areas of the first filter holes is larger than the flow-through area of the air inlet.

[0028] According to one aspect of the embodiments of the present application, the filter box further includes a limiting plate, the limiting plate is arranged parallel and at intervals to the bottom plate, a plurality of second filter holes are provided on the limiting plate, the filter element is clamped between the limiting plate and the bottom plate, and the sum of the opening areas of the second filter holes is larger than the flow-through area of the air inlet.

[0029] According to one aspect of the embodiments of the present application, on the inner surface of the housing, partition ring plates are provided between the air outlet area and the two air inlet areas, and the two partition ring plates are respectively fixedly connected to the two ends of the stator along its axial direction and seal the gap between the stator and the housing.

[0030] The embodiments of the present application also provide a wind power generating set, wherein the wind power generating set includes the generator according to any one of the preceding claims.

[0031] The generator and wind turbine provided by the embodiments of the present application can effectively increase the flow area of the cooling air by arranging an axial channel and a circumferential channel on the rotor structure, arranging an annular channel between the stator and the rotor structure, and arranging a radial channel inside the stator. Compared with the air gap formed between the stator and the rotor in the prior art, it can achieve the advantages of reducing wind resistance and loss and improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the drawings.

[0033] Figure 1 is a schematic structural diagram of the generator provided by the embodiments of the present application;

[0034] Figure 2 is Figure 1 a partial enlarged view of

[0035] Figure 3 is an axial structural diagram of the rotor structure of the generator provided by the embodiments of the present application;

[0036] Figure 4 is a circumferential partial structural diagram of the rotor structure of the generator provided by the embodiments of the present application;

[0037] Figure 5 is a sectional structural diagram along the Figure 4 A-A line in

[0038] Figure 6 is a sectional structural diagram along the Figure 4 B-B line in

[0039] Figure 7 is an axial structural diagram of the housing of the generator provided by the embodiments of the present application;

[0040] Figure 8 is Figure 7 a partial enlarged schematic diagram of

[0041] Figure 9 is a schematic structural diagram of the filter assembly of the generator provided by the embodiments of the present application.

[0042] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0043] Description of the reference numerals in the drawings:

[0044] 1. Rotor structure; 11. Axial channel; 12. Circumferential channel; 131. Central seat; 132. Connecting pipe; 1321. Connecting port; 133. Support plate; 134. Sealing plate; 135. Gap; 14. Magnet assembly; 141. Magnet ring; 1411. Magnet; 1412. Notch; 142. Positioning screw; 2. Stator; 21. Radial channel; S. Annular channel; 3. Housing; 31. Air inlet area; 311. Air inlet; 32. Air outlet area; 33. Partition ring plate; 4. Filter assembly; 41. Filter box; 411. Bottom plate; 4111. First filter hole; 42. Filter element; 43. Limiting plate; 431. Second filter hole. Detailed implementation manners

[0045] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0046] The orientation terms appearing in the following description are all the directions shown in the drawings, and do not limit the specific steps and structures of the generator and the wind turbine generator set of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0047] As Figures 1 to 6 shown, an embodiment of the present application provides a generator, wherein the generator includes a rotor structure 1 and a stator 2, and the rotor structure 1 can rotate relative to the stator 2 to generate electricity.

[0048] The rotor structure 1 is provided with a plurality of axial channels 11 and a plurality of circumferential channels 12; each axial channel 11 is arranged at intervals in the circumferential direction of the rotor structure 1, and each axial channel 11 penetrates through the end faces at both axial ends of the rotor structure 1; each circumferential channel 12 is arranged at intervals in the axial direction of the rotor structure 1, and each circumferential channel 12 is arranged to surround the rotor structure 1 in the circumferential direction; each axial channel 11 communicates with at least one circumferential channel 12, and the circumferential channel 12 penetrates through the outer peripheral surface of the rotor structure 1; during the cooling process, cooling air can enter each axial channel 11 from both axial ends of the rotor structure 1, then enter each circumferential channel 12 from each axial channel 11, and be discharged to the circumferential surface of the rotor structure 1, so as to conduct the heat inside the rotor structure 1 to the outside of the rotor structure 1, improve the heat dissipation efficiency of the rotor structure 1, and improve the cooling effect.

[0049] The stator 2 is sleeved outside the rotor structure 1, and an annular channel S is formed between the stator 2 and the rotor structure 1. The annular channel S is in a through state along the axial direction of the rotor structure 1. Each circumferential channel 12 communicates with the annular channel S. The stator 2 is provided with a plurality of radial channels 21. Each of the radial channels 21 is arranged at intervals in the circumferential direction of the stator 2. The first end of each radial channel 21 penetrates through the inner surface of the stator 2 and communicates with the annular channel S, and the second end of each radial channel 21 penetrates through the outer surface of the stator 2; during the cooling process, cooling air can enter between the rotor structure 1 and the stator 2 from the annular channel S, and then be discharged to the outside of the rotor structure 1 through each radial channel 21, so as to conduct the heat between the rotor structure 1 and the stator 2 and inside the stator 2 to the outside of the stator, improve the overall heat dissipation efficiency of the rotor structure 1 and the stator 2, and improve the cooling effect.

[0050] The generator provided by the embodiment of the present application, by arranging the axial channels 11 and the circumferential channels 12 on the rotor structure 1, arranging the annular channel S between the stator 2 and the rotor structure 1, and arranging the radial channels 21 inside the stator 2, compared with the air gap formed between the stator 2 and the rotor in the prior art, can effectively increase the flow area of the cooling air, so as to achieve the advantages of reducing the wind resistance and loss and improving the cooling effect.

[0051] As Figure 1 and Figure 2 shown, according to one aspect of the embodiment of the present application, the projection of each radial channel 21 along its through direction falls into the projection of a circumferential channel 12, so that the cooling air flowing out of the circumferential channel 12 can quickly and smoothly enter the radial channel 21 to be discharged to the outside of the stator 2, ensuring the smooth flow of the cooling air, reducing the accumulation of heat between the rotor structure 1 and the stator 2, and further achieving the effect of improving the heat dissipation efficiency.

[0052] As Figures 1 to 6As shown, according to one aspect of the embodiments of the present application, the rotor structure 1 includes a support structure and a magnet assembly 14. The rotation function of the rotor structure 1 is realized through the support structure, and power generation during the rotation of the rotor structure 1 is realized through the magnet assembly 14.

[0053] Each axial channel 11 is provided in the support member, and each axial channel 11 has at least one communication port 1321, and each communication port 1321 can communicate with a circumferential channel 12.

[0054] Optionally, each circumferential channel 12 is provided with a plurality of communication ports 1321, so that each axial channel 11 communicates with each circumferential channel 12 at the same time. After the cooling air enters each cooling channel, it can be quickly dispersed to each circumferential channel 12 through the corresponding communication ports 1321, increasing the flow area of the cooling air while ensuring the uniform flow of the cooling air inside and on the periphery of the rotor structure 1 and ensuring its heat dissipation uniformity.

[0055] The magnet assembly 14 is detachably connected to the periphery of the support member, and each circumferential channel 12 is provided in the magnet assembly 14. The circumferential channel 12 penetrates the inner and outer sides of the circumference of the magnet assembly 14 to realize the flow of the cooling air from the support member to the outer periphery of the magnet assembly 14.

[0056] As Figures 3 to 5 shown, according to one aspect of the embodiments of the present application, the support member includes a central seat 131 and a plurality of connecting pipes 132.

[0057] The central seat 131 is an installation seat formed by integral molding or fixedly connected by a plate member. The projection of the central seat 131 along the axial direction of the rotor structure 1 is circular.

[0058] The connecting pipe 132 is in a through shape along its axial direction. The connecting pipe 132 can be a circular pipe with a circular radial cross-section, a rectangular pipe with a rectangular radial cross-section, or a special-shaped pipe with other shapes of radial cross-sections.

[0059] The connecting pipes 132 are arranged at intervals along the circumference of the central seat 131 and are fixedly connected to the central seat 131, which can be fixed by welding to ensure the connection strength between the two.

[0060] The communication ports 1321 are opened on the side of each connecting pipe 132 facing away from the central seat 131 to communicate with the circumferential channels 12 inside the magnet assembly 14 to ensure the smooth transfer of the cooling air.

[0061] As Figure 3 and Figure 4As shown, according to one aspect of the embodiments of the present application, the support member further includes a plurality of support plates 133. At least one support plate 133 is provided between every two adjacent communication pipes 132. The support plates 133 are fixedly connected to the two adjacent communication pipes 132 respectively to fill the concave space formed between the adjacent communication pipes 132, so that the support structure forms a continuous outer peripheral surface.

[0062] Specifically, the support plate 133 is a sector plate, and the communication pipe 132 is a rectangular pipe with a rectangular radial cross-section. The outer peripheral surfaces of the support plates 133 are connected to the surfaces of the communication pipes 132 facing away from the central seat 131 to form a continuous circumferential surface. It should be noted that, relative to the circumferential dimension of the rotor structure 1, the dimension of the surface of each communication pipe 132 facing away from the central seat 131 along the circumferential direction of the rotor structure 1 is very small. Therefore, although the surface of the communication pipe 132 facing away from the central seat 131 is a plane, its influence on the outer peripheral surface of the rotor structure 1 can be ignored. The surface formed by the outer peripheral surface of the support plate 133 and the outer peripheral surface of the communication pipe 132 can be regarded as a continuous circumferential surface.

[0063] As Figure 5 shown, according to one aspect of the embodiments of the present application, each communication pipe 132 has a certain dimension along the radial direction of the rotor structure 1. To reduce the weight of the rotor structure 1, each support plate 133 can be thinned, that is, the dimension of each support plate 133 along the radial direction of the rotor structure 1 is smaller than the dimension of each communication pipe 132 along the radial direction of the rotor structure 1. After the support plates 133 are installed between the communication pipes 132, a gap 135 is formed between each support plate 133 and the central seat 131.

[0064] The support member further includes a plurality of sealing plates 134. Both ends of each gap 135 along the axial direction of the rotor structure 1 are respectively closed by the sealing plates 134 to prevent cooling air from entering and staying in the gap 135, reduce the loss of cooling air, and enable the cooling air to only enter the axial channel 11 for circulation.

[0065] Optionally, the sealing plates 134 are fixedly connected to the communication pipes 132, the support plates 133 and the central seat 131 by welding to ensure the structural strength and sealing performance.

[0066] As Figures 3 to 6 shown, according to one aspect of the embodiments of the present application, the magnet assembly 14 includes a plurality of magnet rings 141. The magnet rings 141 are arranged at intervals along the axial direction of the rotor structure 1, and a circumferential channel 12 is formed between every two adjacent magnet rings 141.

[0067] The magnet assembly 14 further includes a plurality of positioning screws 142. The positioning screws 142 are arranged at intervals along the circumferential direction of the rotor structure 1 and extend along the axial direction of the rotor structure 1. Each positioning screw 142 passes through each magnet ring 141 in sequence to limit the circumferential and axial positions of each magnet ring 141.

[0068] Each magnet ring 141 includes a plurality of magnets 1411, and each magnet 1411 is arranged circumferentially along the rotor structure 1. Each magnet 1411 is detachably connected to the bracket member by bolts or other connecting members.

[0069] Each magnet 1411 has an arc-shaped structure to ensure that the circumferential arrangement of each magnet 1411 along the rotor structure 1 can form a continuous ring.

[0070] Optionally, the curvature of each magnet 1411, the circumferential dimension of each magnet 1411 along the rotor structure 1, and the number of magnets 1411 in each magnet ring 141 can be adjusted as needed.

[0071] As Figure 3 and Figure 4 shown, according to one aspect of the embodiments of the present application, each magnet ring 141 is provided with a plurality of notches 1412 that penetrate axially along the rotor structure 1, and the notches 1412 are arranged at intervals circumferentially along the rotor structure 1. By providing the notches 1412, it is equivalent to increasing the flow area of the annular channel S, further enhancing the flow area of the cooling air, achieving the advantages of reducing wind resistance and loss, and improving the cooling effect.

[0072] As Figure 3 and Figure 4 shown, according to one aspect of the embodiments of the present application, axially along the rotor structure 1, the projections of the notches 1412 of each magnet ring 141 coincide with the projections of the notches 1412 of the adjacent magnet ring 141; it is equivalent to forming a channel-like structure axially along the rotor structure 1 to ensure the smooth flow of the cooling air axially along the rotor structure 1.

[0073] Optionally, each notch 1412 of each magnet ring 141 is formed at the connection between two adjacent magnets 1411. During processing, the radial dimension of each magnet 1411 is reduced at both ends in the circumferential direction along the rotor structure 1, and the above-mentioned notches 1412 can be formed after connecting each magnet 1411.

[0074] As Figure 1 , Figure 2 and Figures 7 to 9 shown, according to one aspect of the embodiments of the present application, the generator further includes a housing 3, and the rotor structure 1 and the stator 2 are both arranged inside the housing 3. By providing the housing 3, it can provide protection for the rotor structure 1 and the stator 2 and make the generator have a complete appearance.

[0075] The housing 3 is provided with two air inlet areas 31 and one air outlet area 32. The two air inlet areas 31 are arranged at intervals along the axial direction of the rotor structure 1, and the two air inlet areas 31 are respectively arranged at both ends of the rotor structure 1 in the axial direction. The air outlet area 32 is located between the two air inlet areas 31, and the air outlet area 32 corresponds to the second ends of the respective radial channels 21.

[0076] During the cooling process, the cooling air enters the interior of the housing 3 from the two air inlet areas 31 simultaneously. At both ends of the rotor structure 1 in the axial direction, it enters the interior of the respective axial channels 11 and the annular channel S simultaneously. The cooling air entering the interior of the axial channels 11 enters the interior of the annular channel S through the respective circumferential channels 12, enters the respective radial channels 21 together with the cooling air entering the interior of the annular channel S, and is finally discharged to the outside of the housing 3 from the air outlet area 32, realizing the cooling and temperature reduction inside the generator.

[0077] As Figure 7 shown, according to one aspect of the embodiments of the present application, each air inlet area 31 is provided with a plurality of air inlets 311. The air inlets 311 are arranged at intervals along the circumferential direction of the rotor structure 1, so that the cooling air can enter the interior of the housing 3 evenly from multiple positions on the circumferential side of the housing 3. On the one hand, it improves the uniformity of cooling and temperature reduction inside the housing 3, and on the other hand, it can provide sufficient cooling air to the interior of the housing 3.

[0078] A filter assembly 4 is provided on the outer circumferential surface of the housing 3 corresponding to each air inlet 311 to filter the cooling air entering the interior of the housing 3 and prevent impurities in the cooling air from entering the interior of the housing 3 and causing pollution and damage to the components of the generator.

[0079] The filtering area of the filter assembly 4 is larger than the flow-through area of the air inlet 311. While ensuring its filtering effect, it reduces the obstruction caused by the filter assembly 4 to the cooling air and ensures the sufficiency of the cooling air entering the interior of the housing 3.

[0080] As Figure 8 and Figure 9 shown, according to one aspect of the embodiments of the present application, the filter assembly 4 includes a filter box 41 and a filter element 42.

[0081] The filter box 41 is buckled on the corresponding air inlet 311, and the filter box 41 is detachably connected to the housing 3, or the filter box 41 can be directly welded and fixed to the housing 3, and the cooling air entering the interior of the housing 3 from the air inlet 311 all flows through the filter box 41. The filter box 41 has a bottom plate 411, and the bottom plate 411 is arranged corresponding to the air inlet 311; a plurality of first filter holes 4111 are arranged on the bottom plate 411 for cooling air to flow through; the filter element 42 is connected to the bottom plate 411 and covers each first filter hole 4111 to filter the cooling air passing through each first filter hole 4111; the sum of the opening areas of each first filter hole 4111 is greater than the flow area of ​​the air inlet 311, thereby achieving the above-mentioned positive effect of the filter area being greater than the flow area.

[0082] like Figure 8 and Figure 9 As shown, according to one aspect of an embodiment of the present application, the filter box 41 also includes a limiting plate 43, which is arranged parallel to and spaced apart from the bottom plate 411, and a plurality of second filter holes 431 are provided on the limiting plate 43 to allow the cooling air to flow smoothly; the filter element 42 is clamped between the limiting plate 43 and the bottom plate 411, and the limiting plate 43 cooperates with the bottom plate 411 to provide a setting space for the filter element 42 to maintain the position of the filter element 42. When the filter element 42 needs to be replaced, it can be pulled out from between the limiting plate 43 and the bottom plate 411 and replaced, which is very convenient.

[0083] The sum of the opening areas of the second filter holes 431 is larger than the flow area of ​​the air inlet 311, thereby achieving the above-mentioned positive effect produced by the filter area being larger than the flow area.

[0084] like Figure 1 and Figure 2 As shown, according to one aspect of the embodiment of the present application, on the inner surface of the housing 3, a separation ring plate 33 is provided between the exhaust area 32 and the two air inlet areas 31, and the two separation ring plates 33 are respectively fixedly connected to the two ends of the stator 2 along its axial direction and close the gap 135 between the stator 2 and the housing 3. In this way, the cooling air after sufficient heat exchange with the rotor structure 1 and the stator 2 can only be discharged to the outside of the housing 3 along the exhaust area 32, preventing the part of the cooling air from flowing back to other areas of the housing 3 and affecting the heat dissipation effect.

[0085] An embodiment of the present application further provides a wind turbine generator set, wherein the wind turbine generator set comprises a generator as claimed in any one of claims 1 to 4.

[0086] The generator and wind turbine provided by the embodiments of the present application, by providing an axial channel 11 and a circumferential channel 12 on the rotor structure 1, and providing an annular channel S between the stator 2 and the rotor structure 1, and at the same time providing a radial channel 21 inside the stator 2, compared with the air gap formed between the stator 2 and the rotor in the prior art, can effectively increase the flow area of the cooling air, thereby achieving the advantages of reducing wind resistance and loss and improving the cooling effect.

[0087] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A generator, characterized in that: The generator comprises: A rotor structure (1) is provided with a plurality of axial channels (11) and a plurality of circumferential channels (12); each of the axial channels (11) is arranged at intervals along the circumference of the rotor structure (1), and each of the axial channels (11) penetrates the end surfaces of the rotor structure (1) at both axial ends; each of the circumferential channels (12) is arranged at intervals along the axial direction of the rotor structure (1), and each of the circumferential channels (12) is arranged around the circumference of the rotor structure (1); each of the axial channels (11) is connected to at least one of the circumferential channels (12), and the circumferential channels (12) penetrate the outer circumferential surface of the rotor structure (1); A stator (2) is sleeved on the outer side of the rotor structure (1), an annular channel (S) is formed between the stator (2) and the rotor structure (1), the annular channel (S) is through-connected along the axial direction of the rotor structure (1), each of the circumferential channels (12) is connected to the annular channel (S), a plurality of radial channels (21) are provided on the stator (2), each of the radial channels (21) is arranged at intervals along the circumference of the stator (2), a first end of each of the radial channels (21) penetrates the inner surface of the stator (2) and is connected to the annular channel (S), and a second end of each of the radial channels (21) penetrates the outer surface of the stator (2).

2. The generator according to claim 1, characterized in that: The projection of each radial channel (21) along its through direction falls into the projection of one circumferential channel (12).

3. The generator according to claim 1, characterized in that: The rotor structure (1) comprises: A support component, each of the axial channels (11) is arranged on the support component, and each of the axial channels (11) has at least one communication port (1321), and each of the communication ports (1321) can be connected to one of the circumferential channels (12); The magnet assembly (14) is detachably connected to the peripheral side of the support component, and each of the circumferential channels (12) is arranged on the magnet assembly (14).

4. The generator according to claim 3, characterized in that: The support member comprises: The center seat (131) is circular in shape when projected along the axial direction of the rotor structure (1); A plurality of connecting tubes (132) are provided, wherein the connecting tubes (132) are through-shaped along their axial direction, each of the connecting tubes (132) is arranged at intervals along the circumference of the center seat (131) and is fixedly connected to the center seat (131), and the connecting port (1321) is provided on a side of each of the connecting tubes (132) away from the center seat (131).

5. The generator according to claim 4, characterized in that: The support component further comprises a plurality of support plates (133), at least one support plate (133) being arranged between every two adjacent connecting tubes (132), the support plates (133) being respectively fixedly connected to the two adjacent connecting tubes (132), and the outer peripheral surface of each support plate (133) being connected to the surface of each connecting tube (132) away from the center seat to form a continuous circumferential surface.

6. The generator according to claim 5, characterized in that: A gap (135) is formed between each of the support plates (133) and the center seat (131), and the support component also includes a plurality of sealing plates (134). Both ends of each of the gaps (135) along the axial direction of the rotor structure (1) are respectively closed by the sealing plates (134), and the sealing plates (134) are respectively fixedly connected to the connecting pipe (132), the support plates (133) and the center seat (131).

7. The generator according to any one of claims 3 to 6, characterized in that: The magnet assembly (14) comprises a plurality of magnet rings (141), each of the magnet rings (141) being arranged at intervals along the axial direction of the rotor structure (1), and a circumferential channel (12) is formed between every two adjacent magnet rings (141); Each of the magnet rings (141) comprises a plurality of magnets (1411), each of the magnets (1411) being arranged along the circumference of the rotor structure (1), and each of the magnets (1411) being detachably connected to the support component.

8. The generator according to claim 7, characterized in that: Each of the magnet rings (141) is provided with a plurality of notches (1412) extending axially through the rotor structure (1), and the notches (1412) are arranged at intervals along the circumferential direction of the rotor structure (1).

9. The generator according to claim 8, characterized in that: Along the axial direction of the rotor structure (1), the projection of each of the notches (1412) of each of the magnet rings (141) coincides with the projection of each of the notches (1412) of the adjacent magnet rings (141); And / or, each of the notches (1412) of each of the magnet rings (141) is formed at the connection between two adjacent magnets (1411).

10. The generator according to claim 1, characterized in that: The generator further comprises a casing (3), the rotor structure (1) and the stator (2) are both arranged inside the casing (3), the casing (3) is provided with two air inlet areas (31) and one air exhaust area (32), the two air inlet areas (31) are arranged at intervals along the axial direction of the rotor structure (1), and the two air inlet areas (31) are respectively arranged at two axial ends of the rotor structure (1), the air exhaust area (32) is located between the two air inlet areas (31), and the air exhaust area (32) corresponds to the second end of each radial channel (21).

11. The generator according to claim 10, characterized in that: Each of the air inlet areas (31) is provided with a plurality of air inlets (311), the air inlets (311) being arranged at intervals along the circumference of the rotor structure (1), and a filter assembly (4) corresponding to each of the air inlets (311) is provided on the outer circumferential surface of the housing (3), the filter area of ​​the filter assembly (4) being larger than the flow area of ​​the air inlet (311).

12. The generator according to claim 11, characterized in that The filter assembly (4) comprises: A filter box (41) is buckled on the corresponding air inlet (311), and the filter box (41) is detachably connected to the housing (3); the filter box (41) has a bottom plate (411), and the bottom plate (411) is arranged corresponding to the air inlet (311); a plurality of first filter holes (4111) are provided on the bottom plate (411); A filter element (42) is connected to the bottom plate (411) and covers each of the first filter holes (4111), and the sum of the opening areas of each of the first filter holes (4111) is greater than the flow area of ​​the air inlet (311).

13. The generator according to claim 12, characterized in that The filter box (41) further comprises a limiting plate (43), the limiting plate (43) being arranged in parallel and spaced relation with the bottom plate (411), the limiting plate (43) being provided with a plurality of second filter holes (431), the filter element (42) being clamped between the limiting plate (43) and the bottom plate (411), and the sum of the opening areas of the second filter holes (431) being greater than the flow area of ​​the air inlet (311).

14. The generator according to claim 10, characterized in that On the inner surface of the casing (3), a separation ring plate (33) is provided between the exhaust area (32) and the two air inlet areas (31); the two separation ring plates (33) are respectively fixedly connected to the two ends of the stator (2) along its axial direction and close the gap (135) between the stator (2) and the casing (3).

15. A wind turbine generator set, characterized in that: The wind turbine generator set comprises the generator according to any one of claims 1 to 14.

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