Stator bracket, motor and wind turbine generator set

Abstract

The present disclosure provides a stator support, a motor and a wind turbine generator set, wherein the stator support comprises a stator support body and a cooling fan, wherein the shaft end of the stator support body on the nacelle side is provided with an oblique support, wherein the cross section of the oblique support gradually increases along the direction from the impeller side to the nacelle side, and the cooling fan is located on the nacelle side of the oblique support and is fixed on the oblique support. In this arrangement, the oblique support is replaced on the basis of the original stator support, thereby improving the structural strength of the stator support so as to support the cooling fan, and the cooling fan can be provided to improve the heat dissipation efficiency of the stator support.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power motors, and in particular, relates to a stator bracket, a motor and a wind power generator set. Background Art

[0002] As time goes by, early wind turbines are gradually entering the end of their service life, and the post-maintenance market of wind turbines has received more and more attention. How to improve the original generators is a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0003] The main purpose of the present disclosure is to provide a stator bracket to improve its cooling efficiency.

[0004] In view of the above objectives, the present disclosure provides the following technical solutions:

[0005] In one aspect of the present disclosure, a stator support is provided, comprising a stator support body and an air cooler, wherein the shaft end of the stator support body on the nacelle side is provided with an oblique support, the cross section of the oblique support gradually increases along the direction from the impeller side to the nacelle side, and the air cooler is located on the nacelle side of the oblique support and fixed on the oblique support. In this arrangement, the oblique support is replaced on the basis of the original stator support, thereby improving the structural strength of the stator support so as to be able to support the air cooler, and the heat dissipation efficiency of the stator support can be improved by providing the air cooler.

[0006] In an exemplary embodiment of the present disclosure, the stator support further includes a tower side sealing ring, the tower side sealing ring is fixed to the tower side end of the stator support body, the tower side sealing ring and the stator support body are arranged at intervals, and the tower side sealing ring is provided with a sealing ring through hole that can be connected to the air outlet of the air cooler. In this arrangement, by providing a sealing ring through hole on the tower side sealing ring so as to be connected to the air cooler, the air cooler can generate negative pressure in the stator support, which can accelerate the gas in the air gap to enter the air cooler and then be directly discharged through the sealing ring through hole, thereby shortening the length of the pipeline outside the stator support.

[0007] Optionally, the stator support further includes an exhaust cavity, the exhaust cavity is arranged between the tower side sealing ring and the stator support body, the exhaust cavity includes a side wall parallel to the tower side sealing ring, the exhaust cavity is connected to the air cooler through the sealing ring through hole, and the side wall is provided with exhaust cavity air holes. In this way, the exhaust cavity air holes can be provided on the side wall without increasing the axial size and radial size of the stator support, so as to allow the stator support to exhaust air to the outside, and can adapt to more usage occasions.

[0008] Furthermore, there are two air coolers, and a manhole is provided on the oblique support, and the manhole is arranged at the 6 o'clock position of the oblique support, and the two air coolers are arranged at the 4 o'clock position and the 8 o'clock position of the oblique support respectively. In this arrangement, the manhole is arranged at the 6 o'clock position of the oblique support, that is, located at the lower part of the motor, which is convenient for operators to enter. By arranging the air coolers at the 4 o'clock position and the 8 o'clock position of the oblique support, rainwater can be prevented from entering the air coolers, thereby increasing the service life of the air coolers.

[0009] In another exemplary embodiment of the present disclosure, the surface of the cabin side of the oblique support protrudes to form an air guide cavity, and the air cooler is fixed on the air guide cavity. In this arrangement, the air cooler is connected to the air gap through the air guide cavity by adding the air guide cavity, which also facilitates the installation of the air cooler.

[0010] Specifically, the stator support body further comprises a plurality of hollow tubes, which are arranged at intervals along the circumference of the stator support body and extend in the axial direction of the stator support, and the hollow tubes have radial ventilation channels and / or axial ventilation channels. In this arrangement, by arranging radial ventilation channels and / or axial ventilation channels connected to the ventilation system on the hollow tubes, the ventilation volume of the air gap is increased, and the ventilation volume of the ventilation system is also increased, thereby improving the cooling speed of the motor.

[0011] Optionally, the stator support body further includes a pair of side ring plates and a cylindrical back plate connected between the pair of side ring plates, the pair of side ring plates are respectively arranged at the axial ends of the cylindrical back plate, the pair of side ring plates are provided with connector accommodating holes for accommodating the hollow tube, the hollow tube is fixed in the connector accommodating holes, the cylindrical back plate is arranged on the radial inner side of the hollow tube, and the cylindrical back plate is provided with a back plate through hole connected to the air inlet of the air cooler. In this arrangement, by arranging the side ring plates and the cylindrical back plate on the stator support body to form an annular air collecting cavity, the hollow tube can be connected to the annular air collecting cavity, so that the motor has the same temperature in the circumferential direction and is evenly reduced.

[0012] Furthermore, the angle between the oblique support and the rotating shaft is 70°-80°; and / or, a reinforcing wing plate is provided on the impeller side of the oblique support. In this way, by cooperating with the oblique support, the material used is reduced while ensuring the structural strength of the stator support, thereby reducing the weight of the stator support.

[0013] Furthermore, when the angle between the oblique support and the rotating shaft is too small, the oblique support will be formed into a cantilever beam, which is prone to stress concentration at the connection with other components. When the angle between the oblique support and the rotating shaft is too large, the structural strength of the stator bracket will decrease. The inventors found that when the angle is within the above range, it can have good structural strength and avoid stress concentration.

[0014] In another exemplary embodiment of the present disclosure, the inclined support is provided with an inclined plate through hole, and the inclined plate through hole is provided with an air filter. In this way, the inclined plate through hole is provided on the inclined support, which can increase the ventilation volume of the stator bracket, thereby improving the heat dissipation efficiency. Furthermore, by providing an air filter at the inclined plate through hole, it is possible to prevent foreign debris from accidentally entering the stator bracket and causing danger.

[0015] Another aspect of the present disclosure provides a motor, the motor comprising a rotor and a stator, the rotor being sleeved on the outer periphery of the stator, the stator comprising the stator bracket as described above. In this arrangement, the original stator bracket is replaced with an oblique support, which improves the structural strength of the stator bracket so as to support an air cooler, and the heat dissipation efficiency of the motor can be improved by arranging the air cooler.

[0016] Optionally, a sealed cavity is provided between the fixed axis and the rotating axis of the motor, and a phase-change cooling medium is contained in the sealed cavity, and the sealed cavity is extended along the axial direction of the fixed axis. In this arrangement, the phase-change cooling medium undergoes a phase change in the sealed cavity as the temperature changes, which can further improve the heat dissipation efficiency of the motor.

[0017] Optionally, the inner diameter of the rotating shaft is larger than the outer diameter of the fixed shaft, the motor further comprises a shaft end seal, and the annular seal is sealingly arranged between the rotating shaft and the fixed shaft, so that the fixed shaft, the rotating shaft and the annular seal form the sealed cavity. Such arrangement has a simple structure, low manufacturing cost and outstanding heat dissipation effect. Furthermore, the annular seal is a labyrinth seal ring.

[0018] Another aspect of the present disclosure provides a wind turbine generator set, wherein the wind turbine generator set comprises the motor as described above.

[0019] The stator bracket, motor and wind turbine generator set provided by the present invention have the following beneficial effects: the shaft end of the nacelle side of the stator bracket body provided by the present invention is provided with an inclined support, the inclined support improves the structural strength of the stator bracket body, and an air cooler is provided on the inclined support to improve the heat dissipation efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or other objects and advantages of the present disclosure will become more apparent through the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A structural diagram of a motor provided as an exemplary embodiment of the present disclosure.

[0022] Figure 2 for Figure 1 A front view of a motor provided in the first embodiment.

[0023] Figure 3 for Figure 1 A front view of a motor provided in the second embodiment.

[0024] Figure 4 for Figure 1 Structural diagram of the stator bracket.

[0025] Figure 5 for Figure 4 Side view of the stator bracket in.

[0026] Description of reference numerals:

[0027] 100. stator; 101. stator bracket;

[0028] 102. Oblique support; 103. Hollow tube;

[0029] 104, cylindrical back plate; 105, side ring plate;

[0030] 106, back plate through hole; 107, inclined plate through hole;

[0031] 108. Manhole; 109. Exhaust cavity;

[0032] 110. Exhaust cavity air hole; 111. Strengthening wing plate;

[0033] 112. Rubber hose; 120. Air cooler;

[0034] 130. Tower side sealing ring; 131. Sealing ring through hole;

[0035] 140. air guide cavity; 150. fixed axis;

[0036] 200. Rotor. DETAILED DESCRIPTION

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the implementation of the present disclosure is limited to the embodiments set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0038] In one aspect of the present disclosure, a wind turbine generator set is provided. The wind turbine generator set may include a motor having good heat dissipation efficiency.

[0039] Reference Figures 1 to 5The motor may include a stator and a rotor. The rotor may be sleeved on the outer periphery of the stator, that is, the stator is inside the outer rotor. The stator may include a stator bracket, and the stator bracket can improve the heat dissipation efficiency. In the present disclosure, the motor is taken as an example for explanation as a generator. Specifically, the stator bracket may include a stator bracket body and an air cooler 120. An inclined support 102 is provided at the shaft end on the cabin side of the stator bracket body. The cross section of the inclined support 102 gradually increases in the direction from the impeller side to the cabin side. The air cooler 120 is located on the cabin side of the inclined support 102 and is fixed to the inclined support 102.

[0040] The present disclosure provides an oblique support 102 at the shaft end of the nacelle side of the stator support body, the oblique support 102 improves the structural strength of the stator support body, and the cooling fan 120 is provided on the oblique support 102 to improve the heat dissipation efficiency of the motor.

[0041] Furthermore, the stator support 101 may further include a tower side sealing ring 130, which may be fixed to the tower side end of the stator support body to be sealed with the nacelle, the tower side sealing ring 130 and the stator support body are spaced apart along the axial direction of the motor, and the tower side sealing ring 130 is provided with a sealing ring through hole 131 that can communicate with the air outlet of the air cooler 120. Figure 1 As shown, the tower side sealing ring 130 can protrude outward from the tower side end face of the stator support 101 along its axial direction, and is roughly formed into a cylindrical shape, for example but not limited to, it can be cylindrical, and the sealing ring through hole 131 is arranged on the tower side sealing ring 130, that is, the sealing ring through hole 131 can be opened in the radial direction of the stator support. In this way, the ventilation duct of the stator support can be increased without increasing the axial height of the stator support, thereby increasing the ventilation volume of the motor and improving the heat dissipation efficiency of the motor. In addition, the sealing ring through hole 131 is arranged close to the air cooler 120, and the air outlet of the air cooler 120 can be directly connected to the sealing ring through hole 131, without the need to add additional ventilation ducts, thereby reducing the manufacturing cost of the motor.

[0042] When the space between the tower side sealing ring 130 and the stator support body is small and the size of the sealing ring through hole 131 is small, which makes it difficult to meet the exhaust demand, an exhaust cavity 109 can be provided between the tower side sealing ring 130 and the stator support body. The exhaust cavity 109 is connected to the air cooler 120 through the sealing ring through hole 131. The exhaust cavity 109 can include a side wall parallel to the tower side sealing ring 130. The side wall is provided with an exhaust cavity air hole 110. The exhaust cavity air hole 110 can be opened toward the axial direction of the stator support, such as Figure 4As shown. In this embodiment, the exhaust cavity 109 may be arc-shaped. Specifically, the exhaust cavity 109 also includes an arc segment that is roughly coaxially arranged with the tower side sealing ring 130. The axial ends of the arc segment are respectively fixed on the side ring plate 105 and the sealing ring through hole 131 of the stator bracket 101. The circumferential ends of the arc segment may be provided with sealing plates, that is, the exhaust cavity 109 is surrounded by the arc segment, the sealing plate, the side ring plate 105, the side wall and the tower side sealing ring 130. The stator bracket 101 provided in the present disclosure can discharge hot air in the radial direction of the motor through the sealing ring through hole 131, and can also discharge it in the axial direction of the motor through the exhaust cavity air hole 110.

[0043] As an example, see Figure 2 and Figure 3 , there can be two air coolers 120, and a manhole 108 is also provided on the inclined support 102. The manhole 108 is arranged at the 6 o'clock position of the inclined support 102, and the two air coolers 120 are arranged at the 4 o'clock position and the 8 o'clock position of the inclined support 102, respectively. By setting the manhole 108 at the 6 o'clock position of the inclined support 102, that is, at the lower part of the motor, it is convenient for operators to enter. Further, by setting the air coolers 120 at the 4 o'clock position and the 8 o'clock position of the inclined support 102, rainwater can be prevented from entering the air coolers 120, thereby improving the service life of the air coolers 120, but it is not limited to this, and the number of air coolers 120 can be selected according to actual needs. In this embodiment, the air coolers 120 can generate negative pressure on the impeller side of the inclined support 102, and the gas at the air gap can flow radially toward the air coolers 120, thereby accelerating the gas flow in the motor and improving the heat dissipation efficiency.

[0044] In order to facilitate the installation of the air cooler 120, as an example, Figure 1 As shown, the surface of the cabin side of the inclined support 102 is protrudingly formed with an air guide cavity 140, and the air cooler 120 can be fixed on the air guide cavity 140. In this embodiment, the air guide cavity 140 can be formed integrally with the inclined support 102 to improve the sealing of the air duct. Specifically, the surface of the cabin side of the inclined support 102 is inclined, and it is inconvenient to adjust the direction of the air cooler 120 when installing the air cooler 120. The top surface of the air guide cavity 140 is perpendicular to the axial direction of the motor, so that the air cooler 120 can be easily installed.

[0045] Reference Figure 4In order to increase the ventilation duct, the stator support body may further include a plurality of hollow tubes 103. The hollow tubes 103 may be arranged at intervals along the circumference of the stator support 101 on the outer periphery of the stator support body, and the hollow tubes 103 may extend along the axial direction of the stator support 101. The hollow tubes 103 have radial ventilation channels and / or axial ventilation channels. As an example, a deairing hole (not shown) is provided on the radial outer wall of the axial middle part of the hollow tube 103. The internal cavity of the hollow tube 103 runs through the axial ends of the hollow tube 103 to form a connecting piece channel. External cold air can enter the hollow tube 103 through the two ends of the hollow tube 103, enter the air gap through the deairing hole, and then enter the air cooler 120 through the return air channel formed by the gap between adjacent hollow tubes 103 and then be discharged from the motor. That is, the stator bracket of the present invention adds a ventilation duct formed by the hollow tube 103. The ventilation duct adopts a ventilation mode of air intake at the axial ends and air outlet in the middle. The ventilation path is short and the heat dissipation efficiency is high.

[0046] In order to make the stator support evenly cool down, the stator support body can also include a pair of side ring plates 105 and a cylindrical back plate 104 connected between the pair of side ring plates 105, the pair of side ring plates 105 are respectively connected to the axial ends of the cylindrical back plate 104, the pair of side ring plates 105 are provided with a connector receiving hole for accommodating the hollow tube 103, the hollow tube 103 is fixed in the connector receiving hole, and the cylindrical back plate 104 can be arranged on the radial inner side of the hollow tube 103. In this way, the stator support body An annular air collecting chamber that can be connected to the hollow tube 103 is formed on the outer peripheral edge. The gas in multiple hollow tubes 103 can all enter the annular air collecting chamber and be collected, so that the gas in multiple hollow tubes 103 on the circumference of the stator bracket 101 can have the same temperature, so that the stator bracket 101 can be cooled evenly. A back plate through hole 106 that is connected to the air inlet of the cooler 120 is provided on the cylindrical back plate 104, and the cooler 120 can be connected to the back plate through hole 106 through a pipeline.

[0047] It can be understood that the stator support 101 provided by the present disclosure includes a hollow tube 103, an annular air collecting cavity surrounded by a pair of side ring plates 105 and a cylindrical back plate 104, and an air cooler 120. Cold air can enter the inner cavity of the hollow tube 103 from the axial ends of the hollow tube 103, enter the air gap through the air removal holes on the radial outer wall located in the axial middle of the hollow tube 103, and then enter the annular air collecting cavity through the return air channel formed by the gap between adjacent hollow tubes 103, and then enter the air cooler 120 through the back plate through hole 106, and then be discharged from the stator support 101. The ventilation duct adopts a structure in which air enters at both axial ends of the hollow tube 103 and air is discharged in the middle, which greatly shortens the length of the ventilation duct. The gas in the air gap can flow radially to enter the air cooler 120 and be discharged, further shortening the length of the ventilation duct and improving the heat dissipation efficiency.

[0048] In order to avoid stress concentration, the angle between the oblique support 102 and the rotating shaft can be 70°-80°. When the angle between the oblique support 102 and the rotating shaft is less than 70°, the oblique support 102 will be formed as a cantilever beam, and stress concentration is easy to occur at the connection with other components (for example, but not limited to, between the oblique support 102 and the cylindrical back plate 104, or between the oblique support 102 and the middle flange); when the angle between the oblique support 102 and the rotating shaft is greater than 80°, the structural strength of the stator bracket 101 will decrease. The inventors have found that when the angle between the oblique support 102 and the rotating shaft is 70°-80°, the stator bracket 101 can have good structural strength and avoid stress concentration.

[0049] Reference Figure 5 In order to further improve the structural strength of the stator bracket 101, a reinforcing wing plate 111 is provided on the impeller side of the oblique support 102. By cooperating with the oblique support 102, the material used is reduced while ensuring the structural strength of the stator bracket 101, thereby reducing the weight of the stator bracket 101 and reducing the manufacturing cost of the stator bracket 101.

[0050] In order to further improve the heat dissipation efficiency, the inclined support 102 is provided with an inclined plate through hole 107, and an air filter (not shown) is provided on the inclined plate through hole 107. By providing the inclined plate through hole 107, external air can enter from the cabin side to the impeller side through the inclined plate through hole 107, so that cold air can enter both axial ends of the hollow tube 103. Furthermore, by providing the air filter, it is possible to prevent debris from entering from the cabin side to the impeller side, thereby improving the safety of the motor operation. For example, but not limited to, the debris can be floating catkins, etc.

[0051] In order to further improve the heat dissipation efficiency of the motor, a closed accommodating cavity (not shown) may be provided between the fixed shaft 150 and the rotating shaft of the motor. The accommodating cavity may extend along the axial direction of the fixed shaft 150 and may contain a phase change cooling medium.

[0052] It can be understood that the accommodating chamber may include an evaporation section and a condensation section. After the working fluid in the evaporation section in the accommodating chamber is heated, it will boil or evaporate, absorb external heat, generate latent heat of vaporization, and change from liquid to steam. The generated steam flows to the condensation section under the action of a certain pressure difference in the heat pipe. The steam encounters the cold wall and the external cold source, condenses into liquid, and releases the latent heat of vaporization at the same time. It is transmitted to the external cold source through the pipe wall. The condensed liquid flows back to the evaporation section under the action of gravity (or liquid absorption core) and evaporates again, and this reciprocating process is used to realize heat transfer and exchange.

[0053] In order to prevent leakage of the phase-change cooling medium, the motor may further include an annular seal, which may be filled in the gap between the fixed shaft 150 and the rotating shaft, for example but not limited to, may be arranged close to the end of the rotating shaft so that the accommodating cavity may have a larger accommodating space. Preferably, the annular seal may be a labyrinth seal ring. Further, the annular seal may be formed of a wear-resistant rubber material, or may be made of a wear-resistant resin material, but is not limited thereto.

[0054] The present disclosure is provided with an oblique support 102 at the shaft end of the nacelle side of the stator support body, and the oblique support 102 improves the structural strength of the stator support body, and the cooling fan 120 is provided on the oblique support 102 to improve the heat dissipation efficiency of the motor. The present disclosure improves the existing natural air-cooled generator, and realizes the forced air-cooling structure design of the generator through a reasonable cooling structure layout without modifying the nacelle, impeller, and shaft system, and realizes a compact design with a small outer diameter and a self-contained forced air-cooling structure, thereby realizing cost reduction of effective materials and structural parts, and has important application value.

[0055] In the description of the present disclosure, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0057] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0058] The features, structures or characteristics described in the present disclosure may be combined in one or more embodiments in any suitable manner. In the above description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the various aspects of the present disclosure.

Claims

1. A stator bracket, It is characterized in that The invention comprises a stator support body and an air cooler (120), wherein an oblique support (102) is provided at an axial end on the cabin side of the stator support body, the cross section of the oblique support (102) gradually increases in a direction from the impeller side to the cabin side, and the air cooler (120) is located on the cabin side of the oblique support (102) and is fixed on the oblique support (102). The stator support (101) further comprises a tower side sealing ring (130), wherein the tower side sealing ring (130) is fixed to the stator support body, and the tower side sealing ring (130) is provided with a sealing ring through hole (131) capable of communicating with an air outlet of the cooling fan (120). The stator support (101) further comprises an exhaust cavity (109), wherein the exhaust cavity (109) is arranged between the tower side sealing ring (130) and the stator support body, wherein the exhaust cavity (109) comprises a side wall parallel to the tower side sealing ring (130), wherein the exhaust cavity (109) is connected to the air cooler (120) via the sealing ring through hole (131), and an exhaust cavity air hole (110) is arranged on the side wall.

2. The stator support according to claim 1, It is characterized in that The tower side sealing ring (130) is fixed to the tower side end of the stator support body, and the tower side sealing ring (130) and the stator support body are arranged at intervals along the axial direction of the stator support.

3. The stator support according to claim 1, It is characterized in that There are two air coolers, and a manhole (108) is also provided on the inclined support (102). The manhole (108) is arranged at the 6 o'clock position of the inclined support (102), and the two air coolers (120) are respectively arranged at the 4 o'clock position and the 8 o'clock position of the inclined support (102).

4. The stator support according to claim 1, It is characterized in that An air guide cavity (140) is protrudingly formed on the surface of the cabin side of the inclined support (102), and the air cooler (120) is fixed on the air guide cavity (140).

5. The stator support according to claim 1, It is characterized in that The stator support body further comprises a plurality of hollow tubes (103), the hollow tubes (103) being arranged at intervals along the circumference of the stator support (101) on the outer periphery of the stator support body, and the hollow tubes (103) extending along the axial direction of the stator support (101), and the hollow tubes (103) having radial ventilation channels and / or axial ventilation channels.

6. The stator support according to claim 5, It is characterized in that The stator support body also includes a pair of side ring plates (105) and a cylindrical back plate (104) connected between the pair of side ring plates (105), the pair of side ring plates (105) are provided with connecting piece accommodating holes for accommodating the hollow tube (103), the hollow tube (103) is fixed in the connecting piece accommodating holes, the cylindrical back plate (104) is arranged on the radial inner side of the hollow tube (103), and the cylindrical back plate (104) is provided with a back plate through hole (106) connected to the air inlet of the air cooler (120).

7. The stator support according to any one of claims 1 to 6, It is characterized in that The included angle between the inclined support (102) and the rotating shaft is 70°-80°; and / or a reinforcing wing plate (111) is provided on the impeller side of the inclined support (102).

8. The stator support according to claim 7, It is characterized in that An inclined plate through hole (107) is provided on the inclined support (102), and an air filter is provided on the inclined plate through hole (107).

9. A motor, It is characterized in that The motor comprises a rotor and a stator, the rotor (200) being sleeved on the outer circumference of the stator (100), and the stator (100) comprising a stator bracket (101) according to any one of claims 1 to 8.

10. The electric machine according to claim 9, It is characterized in that A sealed cavity is provided between the fixed shaft (150) and the rotating shaft of the motor, a phase-change cooling medium is contained in the sealed cavity, and the sealed cavity is extended along the axial direction of the fixed shaft (150).

11. The electric machine according to claim 10, It is characterized in that The inner diameter of the rotating shaft is greater than the outer diameter of the fixed shaft, and the motor further comprises an annular seal, which is sealingly arranged between the rotating shaft and the fixed shaft (150), so that the fixed shaft (150), the rotating shaft and the annular seal form the sealed cavity.

12. The electric machine according to claim 11, It is characterized in that The annular sealing member is a labyrinth sealing ring.

13. A wind turbine generator set, It is characterized in that The wind turbine generator set comprises a motor as claimed in any one of claims 9 to 12.

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