A yaw collector ring heat dissipation system

Abstract

The present invention discloses a yaw collector ring heat dissipation system, comprising a housing, a slip ring stator installed in the housing, and a slip ring rotor installed in the slip ring stator, and also comprising a protective cover, a rotor driver, and a fan; the protective cover is fixed to the middle of the upper end surface of the housing; the fans are respectively fixed to the lower parts of the two opposite sides of the housing, and the two fans are located on both sides of the center line of the width direction of the side; one end of the rotor driver is inserted into the protective cover and connected to the slip ring rotor; an air flow channel is provided between the rotor driver and the protective cover. The yaw collector ring heat dissipation system has a simple structure and good cooling effect, which ensures that the yaw collector ring can work for a long time.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a yaw collector ring heat dissipation system. Background Art

[0002] With the continuous development of wind power generation systems in my country, the wind power industry has higher requirements for the reliability and power generation efficiency of wind turbines. Collector rings, as one of the most important components of wind turbines, have been widely used. As a type of collector ring, the yaw collector ring has gradually gained favor among users. It is independently installed on the tower platform under the nacelle. The rotor rotates synchronously with the nacelle when the yaw occurs. Since the tower space is much smaller than the nacelle, the contact surface between the collector ring rotor slip ring and the brush will generate a lot of heat due to mechanical and electrical losses. The temperature rise of the collector ring needs to be controlled within an acceptable range to ensure safe use. Therefore, it is necessary to invent a yaw collector ring heat dissipation structure to adapt to its characteristics. Summary of the invention

[0003] The present invention provides a yaw collector ring heat dissipation system, which solves the problem of poor heat dissipation effect of the existing yaw collector ring.

[0004] The technical means adopted by the present invention are as follows:

[0005] A yaw collector ring heat dissipation system comprises a casing, a slip ring stator installed in the casing, and a slip ring rotor installed in the slip ring stator, and also comprises a protective cover, a rotor driver and a fan; the protective cover is fixed to the middle of the upper end surface of the casing; the fans are respectively fixed to the lower parts of the two opposite side surfaces of the casing, and the two fans are located on both sides of the center line of the side surface in the width direction; one end of the rotor driver is inserted into the protective cover and connected to the slip ring rotor; an air flow channel is provided between the rotor driver and the protective cover.

[0006] Furthermore, the slip ring stator includes a plurality of first insulating rods and a plurality of annular plate assemblies mounted on the first insulating rods; the plurality of annular plate assemblies are spaced apart along the axial direction of the first insulating rods; the annular plate assembly includes an annular plate, a brush assembly, a bracket and a busbar, a plurality of brush assemblies that can contact the rotor slip ring are mounted on the annular plate, and the busbar is mounted on the annular plate through the bracket and connected to the brush assembly.

[0007] Furthermore, the annular plate is provided with a plurality of heat dissipation holes.

[0008] Further, the brush assembly includes a brush box, a brush body, a compression spring, a compression spring pressure plate and a brush braid;

[0009] The brush box is mounted on the annular plate, a brush body mounting cavity is provided in the brush box, a slip ring contact surface that can contact the rotor slip ring is provided at one end of the brush body, and the other end is fixedly connected to the brush braid, the brush body is placed in the brush body mounting cavity and the end provided with the slip ring contact surface faces the center of the annular plate, the compression spring is provided at one end of the brush body to which the brush braid is fixed, and the compression spring pressure plate is fixed on the brush box so that one end of the compression spring abuts against the brush body, and the other end abuts against the compression spring pressure plate.

[0010] Furthermore, one end of the brush body provided with the slip ring contact surface is also provided with a first heat dissipation groove.

[0011] Furthermore, a heat dissipation channel is provided on the inner side wall of the brush body and the brush body installation cavity.

[0012] Furthermore, a second heat dissipation slot is provided on the brush box.

[0013] Further, the slip ring rotor comprises a central tube, an insulating sleeve, a first fixed disk, a second fixed disk, a plurality of slip ring assemblies and a plurality of second insulating pull rods;

[0014] The insulating sleeve is sleeved on the central tube, the first fixing plate is fixed to the lower end of the central tube, the second fixing plate is fixed to the upper end of the central tube, one end of the second insulating pull rod is connected to the first fixing plate, and the other end is connected to the second fixing plate;

[0015] The slip ring assembly includes a terminal and an annular slip ring. A plurality of mounting protrusions protruding toward the center of the slip ring are circumferentially spaced on the inner side wall of the slip ring. The terminal is mounted on the mounting protrusions. A second pull rod mounting hole is also provided on the mounting protrusions. The slip ring assembly is sleeved on the insulating sleeve, and the second insulating pull rod passes through the second pull rod mounting hole and the plurality of slip ring assemblies are spaced apart and mounted between the first fixed plate and the second fixed plate.

[0016] Furthermore, a bearing is installed at the upper end of the first insulating pull rod, and the outer diameter of the bearing is in contact with the outer surface of the second fixed plate.

[0017] Compared with the prior art, the yaw collector ring heat dissipation system described in the present invention has the following advantages: fans are respectively provided on two opposite sides of the box body, and the two groups of fans are staggered so that the cooling ventilation blown into the box body by the fans spirals up in the box body, thereby optimizing the heat dissipation of the collector ring; in addition, the annular plate is provided with heat dissipation holes, and the brush body, the brush body mounting cavity and the brush box are all provided with heat dissipation grooves, thereby forming an effective heat dissipation air path to ensure the safe and reliable operation of the yaw collector ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a structural diagram of the yaw collector ring heat dissipation system disclosed in Example 1 of the present invention;

[0019] Figure 2 It is a simulation diagram of the wind path of the yaw collector ring heat dissipation system disclosed in the present invention;

[0020] Figure 3 It is the structural diagram of slip ring stator;

[0021] Figure 4 is a structural diagram of the annular plate assembly;

[0022] Figure 5 Structural diagram of the brush assembly;

[0023] Figure 6 An exploded view of the brush assembly;

[0024] Figure 7 This is the structural diagram of the brush box;

[0025] Figure 8 It is a structural diagram of the brush body and brush braid;

[0026] Fig. 9 The assembly drawing of the brush body and the brush box;

[0027] Fig.10 is the structural diagram of the annular plate;

[0028] Fig.11 It is the front view of the slip ring rotor;

[0029] Fig.12 is a cross-sectional view of a slip ring rotor;

[0030] Fig.13 is the structural diagram of the central tube;

[0031] Fig.14 is a structural diagram of the first fixed disk;

[0032] Fig.15 It is an assembly drawing of the center tube, the ferrule and the first fixed plate;

[0033] Fig.16 It is the structural diagram of slip ring;

[0034] Fig.17 This is the assembly diagram of the slip ring rotor and slip ring stator.

[0035] In the figure: 1, box body, 10, upper cover, 11, lower cover, 12, side plate, 120, center line of the side plate width direction, 13, box frame, 14, fan, 15, protective cover, 16, rotor driver, 160, rotor driver body, 161, first flange, 17, first insulating pull rod, 18, air flow channel, 2, annular plate assembly, 20, annular plate, 201, heat dissipation hole, 202, first pull rod mounting hole, 22, bracket, 23, bus bar, 24, insulator, 3, brush assembly, 30, brush box, 300, Brush body mounting cavity, 301, heat dissipation channel, 302, second heat dissipation groove, 304, fixing ear, 305, threaded hole, 31, brush body, 310, slip ring contact surface, 311, first heat dissipation groove, 32, compression spring, 33, compression spring pressure plate, 34, brush braid, 4, slip ring rotor, 40, center tube, 41, insulating sleeve, 42, first fixed plate, 43, second fixed plate, 44, slip ring assembly, 45, second insulating pull rod, 440, terminal, 441, slip ring, 442, mounting protrusion, 443, second pull rod mounting hole. DETAILED DESCRIPTION

[0036] like Figure 1The yaw collector ring heat dissipation system disclosed in the present invention is shown, comprising a box body 1, a slip ring stator installed in the box body 1, and a slip ring rotor 4 installed in the slip ring stator. The box body 1 comprises an upper cover plate 10, a lower cover plate 11, four side plates 12 and a box frame 13. The upper cover plate 10 and the lower cover plate 11 are respectively fixed to the upper and lower ends of the box frame 13, and the four side plates 12 are respectively fixed to the four side plates 12 of the box frame 13. The slip ring stator is installed in the box body, and the slip ring rotor is installed in the slip ring stator. The slip ring rotor can rotate in the slip ring stator to For power transmission, a protective cover 15 with ventilation mesh holes is installed on the upper cover plate 10 of the box body 1. The slip ring rotor is located at one end of the upper cover plate 10 and a rotor driver 16 is installed. The rotor driver 16 includes a tubular rotor driver body 160 and a first flange 161 and a second flange (not shown in the figure) located at both ends of the driver body 160. The rotor driver 16 extends into the protective cover and the second flange is connected to the end of the slip ring rotor. The first flange 161 is connected to the cabin. The cabin can drive the slip ring rotor to rotate in the slip ring stator through the rotor driver. A fan 14 is provided on each of the two opposite side panels 12 of the housing 1 (the left and right sides of the housing are shown in the figure), and the two fans 14 are located on both sides of the center line 120 in the width direction of the side (the fan on the right panel is located at the front end of the center line in the width direction of the right panel, and the fan on the left panel is located at the rear end of the center line in the width direction of the left panel); one end of the rotor drive 16 is inserted into the protective cover 15 and connected to the slip ring rotor; an air flow channel 18 is formed between the rotor drive 16 and the protective cover 15. In the present invention, since fans 14 are provided on each of the two opposite sides of the housing 1, the fans are staggered, such as Figure 1 and Figure 2 As shown, Figure 2 For the air path simulation analysis, when the two fans are working, the fans blow the outside cold air into the box, and make the cold air form a spiral air path from bottom to top in the box, that is, the fan on the right makes the cooling air flow clockwise from the front of the box to the back of the box and spiral up, and the fan on the left makes the cooling air flow clockwise from the back of the box to the front of the box and spiral up, and finally enters the air flow channel between the rotor drive and the protective cover from the center of the upper end of the box and is discharged from the protective cover. The spiral air path increases the movement distance of the cold air in the box, reduces the vortex of the air in the box, optimizes the cooling air path, and improves the heat dissipation effect.

[0037] Furthermore, if Figure 3 and Figure 4As shown, the slip ring stator includes a plurality of first insulating rods 17 and a plurality of annular plate assemblies 2 mounted on the first insulating rods 17; the number of the first insulating rods 17 in the figure is 3, both ends of the first insulating rods 17 are provided with threads, insulating sleeves are bonded to the first insulating rods 17, and both ends of the first insulating rods 17 can be fixedly connected to the upper cover plate 10 and the lower cover plate 11 of the box body 1 through nuts. The plurality of annular plate assemblies 2 are arranged at intervals along the axial direction of the first insulating rods 17, such as Figure 4 As shown, the annular plate assembly 2 includes an annular plate 20, a brush assembly 3, a bracket 22 and a bus 23. The annular plate 20 is provided with a plurality of first pull rod mounting holes 202, the same number as the first insulating pull rod 17. The first insulating pull rod 17 passes through the first pull rod mounting holes 202. The first insulating pull rod 17 is sleeved with an insulator 24 for separation. Specifically, an insulator 24 is provided between the upper cover plate 10 and the adjacent annular plate 20, between two adjacent annular plates 20, and between the lower cover plate 11 and the adjacent annular plate 20. The insulator is made of insulating material, a through hole is provided in the center of the insulator for the insulating pull rod to pass through, stoppers are provided at both ends of the insulator for matching with the first pull rod mounting holes 202 on the annular plate 20, the insulator is sleeved on the first insulating pull rod and matches with the first pull rod mounting holes on the annular plate through the stoppers at both ends to arrange the plurality of annular plate assemblies between the upper cover plate and the lower cover plate at intervals.

[0038] A plurality of brush assemblies 3 that can contact the rotor slip ring are installed on the annular plate 20. In the figure, 12 brush assemblies are arranged on one annular plate. The bus 23 is installed on the outer side of the annular plate 20 through the bracket 22, and the bus 23 is on and connected to the brush assembly 3.

[0039] like Figure 5 and Figure 6 As shown, the brush assembly 3 includes a brush box 30, a brush body 31, a compression spring 32, a compression spring pressure plate 33 and a brush braid 34; the brush box 30 is mounted on the annular plate 20. In this embodiment, as shown in FIG. Figure 7 As shown, the brush box 30 has two fixing ears 304 on both sides, and the brush box 30 is fixed to the annular plate 20 by bolts. The brush box 30 is provided with a brush body installation cavity 300, as shown in FIG. Figure 8As shown, one end of the brush body 31 is an arc-shaped slip ring contact surface 310 that can contact the rotor slip ring, and the other end is fixedly connected to the brush braid 34. In this embodiment, the brush braid 34 is flat and riveted to the brush body 31. The brush body 31 is placed in the brush body installation cavity 300 and one end of the brush body 31 provided with the slip ring contact surface 310 faces the center of the annular plate 20, so that the slip ring contact surface 310 contacts the rotor slip ring placed in the annular plate 20. The end of the brush body 31 fixed with the brush braid 34 is provided with the compression spring 32. The end of the brush box 30 close to the brush braid 34 has a threaded hole 305. Both ends of the compression spring pressure plate 33 are fixed to the brush body 300 by bolts 35. The brush box 30 is close to one end of the brush braid 34, so that one end of the compression spring 32 abuts against the brush body 31, and the other end abuts against the compression spring pressure plate 33. In the present embodiment, a groove 311 is provided on the brush body 31, and a cylindrical protrusion 330 is provided on the compression spring pressure plate 33. One end of the compression spring 32 is placed in the groove 311, and the other end is sleeved on the cylindrical protrusion 330. The compression spring 32 can push the brush body 31 so that the contact surface of the slip ring is in close contact with the rotor slip ring to reduce the resistance between the brush body and the rotor slip ring. The compression spring pressure plate in the present invention adopts nylon PA66 insulating material, the compression spring is a cylindrical spiral spring, and the brush box material adopts cast aluminum material. One end of the bracket 22 is fixed to one side surface of the annular plate 20 by bolts, and the other end of the bracket 22 extends from the outer edge of the annular plate. The bus 23 is an arc-shaped structure. The bus 23 is fixed to the outer end of the bracket 22 by bolts, so that the bus 23 is arranged along the outer circumference of the annular plate 20. Preferably, a gap is formed between the bus and the annular plate to facilitate ventilation and heat dissipation. The other end of the brush braid 34 is fixed to the bus 23 by bolts. The output terminal 230 of the bus is connected to the output busbar of the collector ring junction box. The current on the rotor slip ring can be transmitted to the collector ring junction box through the brush body, the brush braid and the bus. In the figure, the bus has two groups, that is, each annular plate assembly has two groups of power transmission paths connected by the bus, which further reduces the current on each bus and the power consumption generated. The collector ring stator structure disclosed in the present invention is provided with an annular plate, and multiple brush assemblies can be arranged on the annular plate at the same time, thereby enhancing the ability to transmit current. At the same time, since multiple brush assemblies transmit current, compared with existing collector rings, when transmitting the same power, the current flowing through each brush assembly is reduced, thereby reducing the power consumption generated by each brush assembly and reducing the generation of heat.

[0040] The brush assembly disclosed in the present invention has the following advantages over the existing brush assembly: the existing brush assembly generally includes a brush box, a brush and a spring, and the current brush assembly is mainly designed based on the collector ring rotating at high speed, so the existing brush assembly is designed based on the following application experience: the brush and the conductive slip ring will produce a layer of oxide film during use, and when the slip ring rotates at high speed, the oxide film can be kept within a stable range, thereby effectively controlling the contact resistance between the slip ring and the brush. The spring force needs to be controlled within an appropriate range. A small spring force will increase the contact resistance between the brush and the conductive slip ring, thereby increasing the temperature rise; a large spring force will cause serious wear of the brush, so the spring generally adopts a constant pressure coil spring.

[0041] The stator structure of the present invention is mainly used for the yaw collector ring rotating at a low speed. Since the rotation speed of the rotor of the yaw collector ring is synchronized with the rotation speed of the cabin, the rotation speed of the cabin is very low (about 0.1r / min). Compared with the brush conductive structure of the collector ring rotating at a high speed, the brush conductive structure is difficult to control the oxide film between the brush and the slip ring within a stable range through the friction of the high-speed rotating ring surface due to the low rotation speed, resulting in a gradual increase in the contact resistance between the brush and the slip ring. Increasing the elastic force of the spring is an effective means to control the contact resistance between the brush and the slip ring, while the traditional constant pressure coil spring has limitations. If you want to increase its elastic force, you need to increase its installation space. In the present invention, the brush assembly includes a brush box, a brush body, a compression spring, a compression spring pressure plate and a brush braid. The use of a compression spring can provide a larger elastic force without increasing the volume of the brush assembly, so that the brush body can be in close contact with the rotor slip ring, ensuring that the resistance between the brush body and the rotor slip ring is small (poor contact between the brush body and the rotor slip ring will cause an increase in resistance), thereby reducing power consumption and reducing heat generation. At the same time, the brush assembly of this structure also has the advantages of easy maintenance and replacement. Specifically, when a brush assembly needs maintenance or needs to be replaced due to wear, it is only necessary to disassemble the compression spring pressure plate of the corresponding brush assembly, that is, the brush body can be removed for maintenance or replacement of the brush body, without the need to disassemble the entire brush assembly for replacement, thus saving maintenance costs. At the same time, the structure is simple and easy to process and install.

[0042] Furthermore, if Figure 7 As shown, the brush box 30 is also provided with a second heat dissipation slot 302. Specifically, a plurality of long second heat dissipation slots are processed on the upper wall of the brush box 30 to dissipate heat from the brush body. Fig. 9The structure of the brush body with the first heat dissipation groove is shown. The end of the brush body 31 provided with the slip ring contact surface 310 is also provided with the first heat dissipation groove 312. In this embodiment, the first heat dissipation groove 312 is an open groove processed at one end of the slip ring contact surface 310 to connect the upper and lower surfaces of the brush body 31. Preferably, the first heat dissipation groove is at a certain angle with the upper and lower surfaces of the brush body. The first heat dissipation groove is provided on the brush body, which is conducive to the heat dissipation of the brush body. Further, the brush body 31 and the inner side wall of the brush body installation cavity 300 are provided with a heat dissipation channel 313. Specifically, a plurality of open grooves penetrating the front and rear end surfaces of the brush box can be processed on the inner side wall of the brush body installation cavity 300. When the brush body is installed in the brush box, the open grooves on the inner side wall of the brush body installation cavity 300 form a heat dissipation channel. The cold air blown into the box by the fan can pass through the open grooves, which is convenient for further heat dissipation of the brush assembly.

[0043] Furthermore, the annular plate 20 is provided with a plurality of heat dissipation holes 201. Specifically, a plurality of through holes are processed circumferentially on the annular plate. The cooling air blown by the cooling fan of the yaw collector ring can pass through the heat dissipation holes from bottom to top to increase the heat dissipation effect of the yaw collector ring.

[0044] Furthermore, if Figure 7 and Fig.10 As shown, the annular plate 20 is provided with a radially arranged positioning groove 200, and the brush box 30 is provided with a positioning protrusion 301 that can cooperate with the positioning groove 200. When the brush box 30 is installed on the annular plate 20, the positioning protrusion 301 is placed in the positioning groove 200. Specifically, a plurality of radial opening grooves (the center line of the opening groove passes through the center of the annular plate) are processed on the inner circumference side of the annular plate 20, and a long strip-shaped protrusion structure is processed on the bottom surface of the brush box. When the brush assembly is installed on the annular plate, the positioning protrusion is directly inserted into the positioning groove to realize rapid positioning of the brush assembly, and then the brush box is fixed to the annular plate by bolts. The positioning groove and the positioning protrusion can ensure the concentricity of multiple brush assemblies, thereby ensuring close contact between the brush body and the rotor slip ring, and reducing the resistance between the brush body and the rotor slip ring.

[0045] like Fig.11 and Fig.12 As shown, the slip ring rotor 4 in the present invention includes a central tube 40, an insulating sleeve 41, a first fixed plate 42, a second fixed plate 43, a plurality of slip ring assemblies 44 and a plurality of second insulating pull rods 45; Fig.13 As shown, the outer side wall of the lower end of the central tube 40 is provided with a plurality of circumferentially arranged sliding grooves 401, and a first fixed disk block 400 is formed between two adjacent sliding grooves 401. The central tube 40 is also provided with an annular groove 402 and a collar clamping surface 403. Fig.15As shown, a collar 46 is fixed on the collar clamping surface 403, and the collar 46 is fixed together with the collar clamping surface 403 by interference fit, and the outer wall of the collar 46 is interference fitted with the inner diameter of the insulating sleeve 41, as shown in FIG. Fig.14 As shown, a plurality of arc-shaped clamping platforms 420 are provided at circumferential intervals in the inner diameter of the first fixed disk 42. The first fixed disk 42 can be inserted into the center tube 40 from the lower end, and the clamping platform part of the first fixed disk can slide into the annular groove 402 through the sliding groove. When the first fixed disk 42 enters the annular groove 402, it rotates a certain angle so that the clamping platform and the first fixed disk clamping block 400 are clamped together, and the ring 46 is fixedly connected to the first fixed disk 42 by bolts. The insulating sleeve 41 is sleeved on the center tube 40, and a stop is provided on the second fixed disk 43. The second fixed disk 43 is clamped on the upper end of the center tube 40. The second insulating pull rod 45 has threads at both ends. The lower end of the second insulating pull rod 45 is fixedly connected to the first fixed disk 42 by a nut, and the upper end is connected to the second fixed disk 43 by a nut. A plurality of slip ring assemblies 44 are fixed on the second insulating pull rod, such as Fig.16 As shown, the slip ring assembly 44 includes a terminal 440 and an annular slip ring 441, the terminal 440 is sleeved with an insulator 444, the inner side wall of the slip ring 441 is provided with a plurality of mounting protrusions 442 protruding toward the center of the slip ring at intervals in the circumferential direction, the terminal 440 is mounted on the mounting protrusion 442, the mounting protrusion 442 is also provided with a second tie rod mounting hole 443, the slip ring assembly 44 is sleeved on the insulating sleeve 41, and the second insulating tie rod 45 passes through the second tie rod mounting hole 443 and installs the plurality of slip ring assemblies at intervals between the first fixed disk 42 and the second fixed disk 43, and two adjacent slip ring assemblies are installed with insulators, and the specific structure is the same as the insulator in the stator structure. An insulating sleeve is provided in the slip ring rotor, so that when the cooling wind blown in by the fan blows toward the rotor, the cooling wind acts on the insulating sleeve, so that the cooling wind can flow circumferentially in the box around the outer wall of the insulating sleeve, thereby improving the heat dissipation in the box.

[0046] Furthermore, if Fig.17 As shown, a bearing is installed at the upper end of the first insulating rod 17, and the outer diameter of the bearing is in contact with the outer surface of the second fixed plate 43. By providing a bearing on the first insulating rod and fixing the upper end of the slip ring rotor by multiple bearings, the type of bearing used can be reduced, and the volume of the yaw collector ring is reduced. At the same time, the gap between the slip ring rotor and the slip ring stator and the box body is increased, thereby ensuring the passage of cooling air and improving the heat dissipation effect.

[0047] Under the test conditions of an ambient temperature of 20°C, a rated current of 2100A, and a test period of 4 hours, the maximum temperature rise of the brush of the yaw collector ring with the yaw collector ring heat dissipation system disclosed in the present invention is about 25K, while the maximum temperature rise of the brush of the collector ring without the heat dissipation system structure is about 50K. The yaw collector ring disclosed in the present invention has excellent heat dissipation performance, ensures the long-term and safe operation of the yaw collector ring, and improves the efficiency of power transmission.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A yaw collector ring heat dissipation system, comprising a housing (1), a slip ring stator installed in the housing (1), and a slip ring rotor (4) installed in the slip ring stator, characterized in that: It also includes a protective cover (15), a rotor driving member (16) and a fan (14); The protective cover (15) is fixed to the middle of the upper end surface of the box body (1); The fans (14) are respectively fixed at the lower parts of two opposite side surfaces of the box body (1), and the two fans (14) are located on both sides of a center line (120) in the width direction of the side surface; One end of the rotor driving member (16) is inserted into the protective cover (15) and connected to the slip ring rotor; An air flow channel (18) is provided between the rotor driving member (16) and the protective cover (15); the slip ring stator comprises a plurality of first insulating pull rods (17) and a plurality of groups of annular plate assemblies (2) mounted on the first insulating pull rods (17); A plurality of groups of the annular plate assemblies (2) are arranged at intervals along the axial direction of the first insulating pull rod (17); The annular plate assembly (2) comprises an annular plate (20), a brush assembly (3), a bracket (22) and a busbar (23); a plurality of brush assemblies (3) capable of contacting a rotor slip ring are mounted on the annular plate (20); the busbar (23) is mounted on the annular plate (20) via the bracket (22) and is connected to the brush assembly (3); the brush assembly (3) comprises a brush box (30), a brush body (31), a compression spring (32), a compression spring pressure plate (33) and a brush braid (34); The brush box (30) is mounted on the annular plate (20), a brush body mounting cavity (300) is provided in the brush box (30), one end of the brush body (31) is provided with a slip ring contact surface (310) that can contact the rotor slip ring, and the other end is fixedly connected to the brush braid (34), the brush body (31) is placed in the brush body mounting cavity (300) and one end provided with the slip ring contact surface (310) faces the center of the annular plate (20), the end of the brush body (31) to which the brush braid (34) is fixed is provided with the compression spring (32), the compression spring pressure plate (33) is fixed on the brush box (30) so that one end of the compression spring (32) abuts against the brush body (31) and the other end abuts against the compression spring pressure plate (33); the end of the brush body (31) provided with the slip ring contact surface (310) is also provided with a first heat dissipation groove (312); The brush body (31) and the inner side wall of the brush body installation cavity (300) are provided with a heat dissipation channel (313); the brush box (30) is also provided with a second heat dissipation groove (302).

2. The yaw collector ring heat dissipation system according to claim 1, characterized in that: The annular plate (20) is provided with a plurality of heat dissipation holes (201).

3. The yaw collector ring heat dissipation system according to claim 1, characterized in that: The slip ring rotor (4) comprises a central tube (40), an insulating sleeve (41), a first fixed disk (42), a second fixed disk (43), a plurality of slip ring assemblies (44), and a plurality of second insulating pull rods (45); The insulating sleeve (41) is sleeved on the central tube (40), the first fixing plate (42) is fixed to the lower end of the central tube (40), the second fixing plate (43) is fixed to the upper end of the central tube (40), and one end of the second insulating pull rod (45) is connected to the first fixing plate (42) and the other end is connected to the second fixing plate (43); The slip ring assembly (44) comprises a terminal (440) and an annular slip ring (441); a plurality of mounting protrusions (442) protruding toward the center of the slip ring are circumferentially spaced on the inner side wall of the slip ring (441); the terminal (440) is mounted on the mounting protrusion (442); a second pull rod mounting hole (443) is also provided on the mounting protrusion (442); the slip ring assembly (44) is sleeved on the insulating sleeve (41), and the second insulating pull rod (45) passes through the second pull rod mounting hole (443) and the plurality of slip ring assemblies (44) are spaced and mounted between the first fixed plate (42) and the second fixed plate (43).

4. The yaw collector ring heat dissipation system according to claim 3, characterized in that: A bearing (5) is mounted on the upper end of the first insulating pull rod (17), and the outer diameter of the bearing (5) is in contact with the outer surface of the second fixed plate (43).

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