A wind power yaw collector ring

Abstract

The present application relates to a wind power yaw collector ring, which includes a stator part, a rotor part, a stator power connection box, a rotor power connection box, and a sheet metal housing; the stator part includes a stator support structure and a plurality of layers of vertically opposite stator conductive plate structures arranged on the stator support structure; the rotor part includes a rotor support structure, a plurality of layers of vertically opposite rotor slip ring structures arranged on the rotor support structure, and a rotor main shaft connected to the rotor slip ring structures; both the stator support structure and the rotor support structure include support steel columns, insulating films arranged on the outer surface layers of the support steel columns, insulating glass fiber tubes sleeved on the outer layers of the insulating films, and a plurality of insulating support columns sleeved on the outside of the insulating glass fiber tubes. In the present application, an insulating and wear-resistant film is attached to the surface of the support steel column to improve the insulation level. When the two outer layers of insulation fail, it can play a stable insulation protection role and improve the safety and stability of the equipment.

Description

Technical Field

[0001] This application relates to the technical field of wind power generation equipment, and particularly to a wind power yaw collector ring. Background Art

[0002] The yaw collector ring of a wind turbine is a high-power rotating electric energy transmission mechanism, and its components include but are not limited to a collector ring stator, a stator side junction box, a collector ring rotor, a rotor side junction box, related accessories and other components. Its main function is to transmit the electric energy of the generator when the incoming and outgoing cables on both sides of the stator and rotor are fixedly laid, either rotating synchronously with the yaw of the unit or in a stationary state. Adopting the collector ring technical route enables the full-cycle adaptive yaw of the wind turbine unit without cable uncoiling, fundamentally solving various problems brought by the non-fixed laying of the cables in the cable twisting section of the wind turbine unit, improving the efficiency of the fan, increasing the power generation, and greatly reducing the damage rate of the unit under extreme weather conditions while improving the yaw efficiency.

[0003] In related technologies, an insulating support column is sleeved outside the fiberglass tube of the yaw collector ring. Due to high humidity and high and low temperature environments, the insulating support column will absorb water and shrink, resulting in the failure of the outermost insulation. Since the internal fiberglass tube has pores due to the characteristics of the material, water vapor will enter the inside of the support steel column through the pores, leading to the short circuit and burning of the yaw collector ring. Summary of the Invention

[0004] The purpose of this application is to provide a wind power yaw collector ring, so that the support steel column can be better insulated and protected, preventing the equipment from experiencing insulation failure and making the equipment safer and more reliable.

[0005] A wind power yaw collector ring provided by this application adopts the following technical solution:

[0006] A wind power yaw collector ring includes a stator part, a rotor part, a stator power connection box, a rotor power connection box and a sheet metal housing; the stator part includes a stator support structure and a plurality of layers of upper and lower relative stator conductive plate structures arranged on the stator support structure; the rotor part includes a rotor support structure, a plurality of layers of upper and lower relative rotor slip ring structures arranged on the rotor support structure and a rotor main shaft connected to the rotor slip ring structures; both the stator support structure and the rotor support structure include support steel columns, insulating films arranged on the outer surface layers of the support steel columns, insulating fiberglass tubes sleeved outside the insulating films and a plurality of insulating support columns sleeved outside the insulating fiberglass tubes.

[0007] As a preferred technical solution of the present application, the stator conductive plate structure includes two arc-shaped stator conductive plates arranged in a centrally symmetrical manner, a stator stainless steel support plate fixedly arranged on the lower surface of each stator conductive plate, a plurality of carbon brush assemblies connected to each stator conductive plate, and a stator power busbar connected to the lower surface of each stator conductive plate, and a clearance groove for the stator power busbar to pass through is opened on the stator stainless steel support plate.

[0008] As a preferred technical solution of the present application, the carbon brush assembly includes a carbon brush frame detachably connected to a stator conductive plate, a copper-carbon alloy carbon brush arranged in the carbon brush frame, a brush braid connected between the copper-carbon alloy carbon brush and the stator conductive plate, an insulating top block connected to the rear end of the carbon brush frame, and a compression spring elastically in contact between the copper-carbon alloy carbon brush and the insulating top block.

[0009] As a preferred technical solution of the present application, a set of stator support structures are connected to both ends of the stator conductive plate, through holes for the stator support structure to pass through are provided on the stator conductive plate and the stator stainless steel support plate, the support steel column and the insulating glass fiber tube pass through the multiple layers of stator conductive plates, and the upper and lower ends of the insulating support column are respectively abutted on the upper and lower adjacent two layers of stator conductive plate structures;

[0010] A plurality of groups of carbon brush assemblies are evenly distributed on the stator conductive plate at a position between two groups of stator support structures.

[0011] As a preferred technical solution of the present application, the rotor slip ring structure includes a rotor slip ring in a circular shape, two rotor connection bars connected to each layer of rotor slip rings, and a rotor connection bar fixing plate connected to the lower surface of the rotor slip ring. The lower end of the rotor connection bar is fixed to the upper surface of the rotor slip ring, the main body is located at the inner ring of the rotor slip ring and extends upward parallel to the central axis of the rotor slip ring. The upper end of the rotor connection bar is higher than the uppermost rotor slip ring, and the connecting bolts pass through the rotor connection bar, the rotor slip ring, and the rotor connection bar fixing plate from top to bottom and are fixed.

[0012] As a preferred technical solution of the present application, the rotor main shaft includes a rotor main shaft tube, a rotor power disk connected to the upper end of the rotor main shaft tube, an upper flange coaxially arranged below the rotor power disk, an upper bearing disk bolted to the lower side of the upper flange, a lower flange coaxially arranged below the upper bearing disk, a rotor load-bearing disk bolted to the lower side of the lower flange, and a bearing seat arranged at the lower end of the rotor main shaft tube, and a shift fork is connected to the rotor power disk.

[0013] As a preferred technical solution of the present application, the rotor main shaft tube includes an upper shaft tube, a middle shaft tube, and a lower shaft tube that are sequentially arranged from top to bottom. The rotor power disk is detachably connected to the upper end of the upper shaft tube, the upper flange disk is fixedly connected to the lower end of the upper shaft tube, the upper bearing disk is fixedly connected to the upper end of the middle shaft tube, the lower flange disk is fixedly connected to the lower end of the middle shaft tube, the rotor load-bearing disk is fixedly connected to the upper end of the lower shaft tube, and the bearing seat is rotatably connected to the lower end of the lower shaft tube.

[0014] As a preferred technical solution of the present application, a plurality of perforations penetrating up and down are uniformly formed on the rotor slip ring along the circumferential direction. The support steel columns and the insulating glass fiber tubes pass through multiple layers of rotor slip rings, upper flange disks, upper bearing disks, and lower flange disks. The end of each insulating support column abuts against the rotor slip ring. The upper end of the support steel column passes through the rotor power disk and is fixed by a nut, and the lower end of the support steel column passes through the rotor load-bearing disk and is fixed by a nut.

[0015] As a preferred technical solution of the present application, the stator power connection box includes a stator power connection box busbar connected between two stator power connection main buses on the same layer, a stator power connection box insulating partition that separates the internal space of the stator power connection box from the space where the stator part is located, and multiple groups of cable clips arranged at the inner bottom of the stator power connection box. The end of the stator power connection main bus passes through the stator power connection box insulating partition to the inside of the stator power connection box, and the stator power connection box busbar is located inside the stator power connection box.

[0016] As a preferred technical solution of the present application, the sheet metal housing includes an upper top plate, a lower top plate, a sheet metal frame, a main board surface sheet metal, a heat dissipation fan surface sheet metal, a filter net surface sheet metal, a rotor power connection box sheet metal, a stator power connection box sheet metal, and anchor bolts. The stator part is connected between the upper top plate and the lower top plate through a stator support structure, and the rotor part is connected between the upper top plate and the lower top plate through a rotor main shaft.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. In the present application, an insulating and wear-resistant film is attached to the surface of the support steel column to improve the insulation level. When the external two-layer insulation fails, it can play a stable insulation protection role and improve the safety and stability of the equipment.

[0019] 2. The top of the copper-carbon alloy carbon brush adopts a square-hole structure to place a square nut. The original stranded wire structure of the brush braid is replaced with a braided wire structure. Since the braided wire structure is formed by flattening the copper tubes at both ends, a through-hole structure can be opened. The copper-carbon alloy carbon brush is processed into a stepped platform structure for placing the brush braid and connecting with the copper-carbon alloy. Screws are used to connect to the square nut through the through-hole structure on the brush braid to lock the brush braid and the copper-carbon alloy, which is beneficial to the replacement of the brush braid assembly and the reduction of equipment costs.

[0020] 3. The thickness of the stator conductive plate is reduced, and a stainless steel plate is provided under the stator conductive plate, which can improve the strength and reduce the cost. A prefabricated nut is installed on the stainless steel plate for fixing and locking the stator conductive plate, the stainless steel plate and the carbon brush frame structure.

[0021] 4. The length of the stator conductive plate is shortened, and the problem of carbon brush equal division. In the prior art, the 360° equal division scheme is used, which wastes the material of the stator conductive plate. Now, a separate structure is used to equally divide within the circumferential attitude of 180°, which can reduce the length and material consumption of the stator conductive plate and save costs. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the main board surface of the embodiment of the present application;

[0023] Figure 2 is a schematic structural diagram of the heat dissipation fan surface of the embodiment of the present application;

[0024] Figure 3 is a schematic structural diagram of the filter screen surface of the embodiment of the present application;

[0025] Figure 4 is a schematic internal structure diagram of the device of the embodiment of the present application;

[0026] Figure 5 is a schematic structural diagram of the stator part in the embodiment of the present application Figure 1 ;

[0027] Figure 6 is a schematic structural diagram of the stator part in the embodiment of the present application Figure 2 ;

[0028] Figure 7 is a schematic structural diagram of the stator conductive plate in the embodiment of the present application;

[0029] Figure 8 is a schematic structural diagram of the carbon brush assembly in the embodiment of the present application;

[0030] Figure 9 is a schematic internal structure diagram of the stator power connection box in the embodiment of the present application Figure 1 ;

[0031] Figure 10 is a schematic internal structure diagram of the stator power connection box in the embodiment of the present application Figure 2 ;

[0032] Figure 11 is a schematic structural diagram of the rotor part in the embodiment of the present application;

[0033] Figure 12 is a schematic structural diagram of the rotor slip ring structure in the embodiment of the present application;

[0034] Figure 13It is a schematic structural diagram of the rotor main shaft in the embodiment of the present application;

[0035] Figure 14 It is a schematic sectional structure diagram of the support structure in the embodiment of the present application;

[0036] In the figure, 1 is the stator part; 11 is the stator conductive plate; 12 is the stator stainless steel support plate; 13 is the stator power connection busbar; 14 is the carbon brush assembly; 141 is the carbon brush frame; 142 is the copper-carbon alloy carbon brush; 143 is the brush braid; 144 is the insulating top block; 145 is the compression spring; 2 is the rotor part; 21 is the rotor slip ring; 22 is the rotor power connection row; 23 is the rotor power connection row fixing piece; 24 is the rotor main shaft tube; 241 is the upper shaft tube; 242 is the middle shaft tube; 243 is the lower shaft tube; 25 is the rotor power disk; 26 is the upper flange; 27 is the upper bearing disk; 28 is the lower flange; 29 is the rotor load-bearing disk; 3 is the stator power connection box; 31 is the stator power connection box busbar; 32 is the stator power connection box insulating partition; 33 is the cable clamp; 4 is the rotor power connection box; 51 is the support steel column; 52 is the insulating film; 53 is the insulating glass fiber tube; 54 is the insulating support column; 61 is the upper top plate; 62 is the lower top plate; 63 is the sheet metal frame; 64 is the main board surface sheet metal; 65 is the heat dissipation fan surface sheet metal; 66 is the filter screen surface sheet metal; 67 is the rotor power connection box sheet metal; 68 is the stator power connection box sheet metal; 69 is the anchor bolt. Detailed implementation manners

[0037] The following will further describe the present application in detail with reference to the Figure 1 - Appendix Figure 14 , and make a further detailed description of the present application.

[0038] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0039] Embodiment: The present application proposes a wind power yaw collector ring. Referring to Figure 1-14 , the device includes a stator part 1, a rotor part 2, a stator power connection box 3, a rotor power connection box 4 and a sheet metal housing. The stator part 1 is fixedly connected inside the sheet metal housing, the rotor part 2 is rotatably arranged in the inner space of the stator part 1, the stator power connection box 3 is installed on one side of the sheet metal housing and connected to the stator part 1, and the rotor power connection box 4 is installed on the top of the sheet metal housing and connected to the rotor part 2.

[0040] The sheet metal housing includes an upper top plate 61, a lower top plate 62, a sheet metal frame 63, a main board surface sheet metal 64, a heat dissipation fan surface sheet metal 65, a filter screen surface sheet metal 66, a rotor power connection box sheet metal 67, a stator power connection box sheet metal 68 and an anchor bolt 69.

[0041] The sheet metal frame 63 is in an overall rectangular frame structure. The upper top plate 61 and the lower top plate 62 are respectively fixed on the upper and lower side surfaces of the sheet metal frame 63. The main board surface sheet metal 64 is connected to the front side surface of the sheet metal frame 63 by bolts. In this embodiment, ventilation and heat dissipation holes are evenly distributed on the main board surface sheet metal 64. The heat dissipation fan surface sheet metal 65 is detachably connected to the right side surface of the sheet metal frame 63. The heat dissipation fan surface sheet metal 65 includes a main board and a heat dissipation air box. Two upper and lower heat dissipation fans are installed in the heat dissipation air box. The filter net surface sheet metal 66 is detachably connected to the left side surface of the sheet metal frame 63. The stator power connection box sheet metal 68 is connected to the rear side surface of the sheet metal frame 63 by bolts. The stator power connection box sheet metal 68 is in a rectangular box structure, with an installation space formed inside, ventilation and heat dissipation holes opened on the side surface, and wire passing holes provided at the bottom. The anchor bolts 69 are connected to the lower top plate 62 and are used to fix the sheet metal shell to other installation bases.

[0042] The upper and lower ends of the stator part 1 are respectively fixedly connected to the upper top plate 61 and the lower top plate 62, so that the stator part 1 is installed in the internal space of the sheet metal frame 63. The rotor part 2 is arranged in the internal space of the stator part 1. The lower end of the rotor part 2 is rotatably connected to the lower top plate 62, and the upper end passes through the upper top plate 61 upward and is rotatably connected to the upper top plate 61.

[0043] The stator part 1 includes four groups of stator support structures and six layers of upper and lower opposite stator conductive plate structures arranged on the four groups of stator support structures. The stator support structure includes a support steel column 51, an insulating film 52, an insulating glass fiber tube 53, and an insulating support column 54; the support steel column 51 includes a thick shaft and thin shafts with external threads provided at the upper and lower ends. The upper thin shaft passes through the upper top plate 61 and is threadedly connected with a nut to lock the support steel column 51 to the upper top plate 61. The lower thin shaft passes through the lower top plate 62 and is threadedly connected with a nut to lock the support steel column 51 to the lower top plate 62. The insulating film 52 is attached to the outer surface layer of the thick shaft of the support steel column 51; the length of the insulating glass fiber tube 53 is less than the length of the thick shaft of the support steel column 51, and the insulating glass fiber tube 53 is sleeved outside the insulating film 52; in this embodiment, seven insulating support columns 54 are provided. The insulating support columns 54 are set as hollow tubes, and the upper and lower ends are set as stepped surface structures. The insulating support columns 54 are sleeved on the insulating glass fiber tube 53.

[0044] The lower end of the lowermost insulating support column 54 abuts against the lower top plate 62, and the upper end abuts against the lowermost layer of stator conductive plate structure. The upper and lower ends of the middle five insulating support columns 54 respectively abut against the upper and lower adjacent layers of stator conductive plate structures. The lower end of the uppermost insulating support column 54 abuts against the uppermost layer of stator conductive plate structure, and the upper end abuts against a locking nut. The upper end of the thick shaft of the support steel column 51 is provided with an external thread for threaded connection with the locking nut. The locking nut is tightened to fix the six layers of stator conductive plate structures between the seven insulating support columns 54.

[0045] Each layer of stator conductive plate structure includes two stator conductive plates 11, two stator stainless steel support plates 12, two stator power connection busbars 13 and six groups of carbon brush assemblies 14. The two stator conductive plates 11 are arranged in central symmetry. The stator conductive plate 11 is arc-shaped, and circular through holes penetrating up and down are opened at both ends. The central angle corresponding to the arc length between the central axes of the two through holes is a right angle. The stator stainless steel support plate 12 is fixed on the lower surface of the stator conductive plate 11 by bolts. The outer contour of the stator conductive plate 11 is the same as that of the stator stainless steel support plate 12. A relief groove is opened in the middle of the stator stainless steel support plate 12 to expose a part of the lower surface of the stator conductive plate 11. Perforations are also provided at both ends of the stator stainless steel support plate 12. One end of the stator power connection busbar 13 passes through the relief groove and is fixed to the stator conductive plate 11 by bolts, and the other end passes out from the internal space of the sheet metal frame 63 and extends into the stator power connection box 3. Three groups of carbon brush assemblies 14 are provided on each stator conductive plate 11 and are evenly distributed circumferentially and connected to the area between the two through holes on the upper surface of the stator conductive plate 11. The support steel column 51 and the insulating glass fiber tube 53 penetrate through the stator conductive plate 11 and the stator stainless steel support plate 12 of each layer. A set of support steel column 51 and insulating glass fiber tube 53 are penetrated through both ends of the stator conductive plate 11 and the stator stainless steel support plate 12 and are supported by the insulating support column 54.

[0046] The carbon brush assembly includes a carbon brush frame 141, a copper-carbon alloy carbon brush 142, a brush braid 143, an insulating top block 144 and a compression spring 145. The carbon brush frame 141 is of a rectangular cylinder structure with openings at the front and rear ends. Ear plates are provided on the left and right sides of the carbon brush frame 141 and are connected to the stator conductive plate 11 by bolts. The copper-carbon alloy carbon brush 142 is installed at the front opening of the carbon brush frame 141. The top of the copper-carbon alloy carbon brush 142 adopts a square hole structure for placing a square nut. The brush braid 143 is of a braided wire structure. The two ends of the braided wire structure are flattened by copper tubes and through hole structures are opened. The lower side rear end of the copper-carbon alloy carbon brush 142 is processed into a stepped platform structure for placing the brush braid 143 to be connected to the copper-carbon alloy carbon brush 142. A bolt is used to connect to the square nut through the through hole structure on the brush braid 143 to lock the brush braid 143 and the copper-carbon alloy carbon brush. The rear end of the carbon brush frame 141 is detachably connected with an insulating top block 144 by bolts. The width of the insulating top block 144 is smaller than the vertical width of the rear opening of the carbon brush frame 141. An opening for the brush braid 143 to insert into the carbon brush frame 141 is provided on the lower side of the insulating top block 144. The compression spring 145 is in elastic contact between the copper-carbon alloy carbon brush 142 and the insulating top block 144. A positioning protrusion is provided on the inner side surface of the insulating top block 144, and a groove is provided on the inner side surface of the copper-carbon alloy carbon brush 142. One end of the compression spring 145 is sleeved on the positioning protrusion, and the other end is inserted into the groove.

[0047] The stator power connection box 3 includes a stator power connection box busbar 31, a stator power connection box insulating partition 32, and a cable clamp 33. Each layer of the stator conductive plate structure is connected to a stator power connection box busbar 31. The two ends of the stator power connection box busbar 31 are respectively connected to the ends of the two stator power connection busbars 13 on the same layer that extend into the stator power connection box 3. A plurality of connection terminals are provided on the stator power connection box busbar 31, and the positions of the connection terminals on the stator power connection box busbars 31 that are opposite to each other up and down are arranged with an offset up and down; the stator power connection box insulating partition 32 is connected to the sheet metal frame 63 by bolts, separating the internal space of the stator power connection box 3 from the space where the stator part 1 is located within the sheet metal frame 63; six groups of cable clamps 33 are provided at the bottom inside the stator power connection box 3 for clamping and fixing the wires connected to each stator power connection box busbar 31.

[0048] The rotor part includes three groups of rotor support structures, six layers of rotor slip ring structures that are opposite to each other up and down and are connected to the three groups of rotor support structures, and a rotor main shaft provided at the center of the rotor slip ring structures. In this embodiment, the structure of the rotor support structure is the same as that of the stator support structure, except for the difference in length. In this embodiment, the rotor support structure also includes support steel columns 51, insulating films 52, insulating glass fiber tubes 53, and insulating support columns 54, and seven sections of insulating support columns 54 are provided.

[0049] Each layer of the rotor slip ring structure includes a rotor slip ring 21, a rotor power connection row 22, and a rotor power connection row fixing piece 23. The rotor slip ring 21 is circular, and its installation position is inside and outside relative to the copper-carbon alloy carbon brush 142. The outer ring of the rotor slip ring 21 is used to contact the copper-carbon alloy carbon brush 142. Three through holes that penetrate up and down are provided along the circumferential direction on the rotor slip ring 21 for the support steel column 51 and the insulating glass fiber tube 53 to pass through. The six layers of rotor slip rings 21 are sandwiched between the seven sections of insulating support columns 54; two rotor power connection rows 22 are connected to each layer of the rotor slip ring 21. The lower end of the rotor power connection row 22 is bent horizontally and fixed on the upper surface of the rotor slip ring 21, and the main body is located inside the inner ring of the rotor slip ring 21 and extends upward parallel to the central axis of the rotor slip ring 21. The upper end of the rotor power connection row 22 is higher than the uppermost rotor slip ring 21. The rotor power connection rows 22 of the six layers of rotor slip rings 21 enclose a circle and have the same upper end height and extend into the rotor power connection box 4. The rotor power connection row fixing piece 23 is provided at a position on the lower surface of the rotor slip ring 21 that is opposite to the rotor power connection row 22 up and down. The connecting bolts sequentially pass through the rotor power connection row 22, the rotor slip ring 21, and the rotor power connection row fixing piece 23 from top to bottom and are fixed with nuts.

[0050] The rotor main shaft includes a rotor main shaft tube 24 and a rotor power disk 25, an upper flange 26, an upper bearing disk 27, a lower flange 28, a rotor load-bearing disk 29, and a bearing seat that are arranged coaxially and connected to the rotor main shaft tube 24 from top to bottom.

[0051] The rotor main shaft tube 24 includes an upper shaft tube 241, a middle shaft tube 242, and a lower shaft tube 243 that are sequentially arranged from top to bottom. The diameters of the three tube bodies are the same. The rotor power disk 25 is fixedly connected to the upper end of the upper shaft tube 241. The upper end of the upper shaft tube 241 is protrudingly provided with staggered teeth, and the lower surface of the rotor power disk 25 is also protrudingly provided with staggered teeth. The rotor power disk 25 and the upper shaft tube 241 are engaged and connected with each other through the staggered teeth. A fork is installed at the edge of the upper surface of the rotor power disk 25. The upper flange 26 is welded and fixed to the lower end of the upper shaft tube 241. The upper flange 26 is connected to the upper bearing disk 27 through bolts. The upper bearing disk 27 is welded to the upper end of the middle shaft tube 242. The upper top plate 61 is connected with four centering bearings (not shown in the figure). The rotation axes of the four centering bearings are located on the same circumferential plane, and the central axis of this circumferential plane coincides with the central axis of the upper bearing disk 27. A centering positioning ring is fixed on the upper surface of the upper bearing disk 27. The four centering bearings are in rolling contact with the inner wall of the centering positioning ring to prevent eccentricity at the upper and lower ends of the rotor main shaft. The lower flange 28 is welded and fixed to the lower end of the middle shaft tube 242. Six layers of rotor slip rings 21 are all sleeved outside the middle shaft tube 242. The lower flange 28 is connected to the rotor bearing disk 29 through bolts. The rotor bearing disk 29 is welded and fixed to the upper end of the lower shaft tube 243. The bearing seat is rotatably connected to the lower end of the lower shaft tube 243 and is fixedly installed on the lower top plate 62.

[0052] Three groups of support steel columns 51 and insulating glass fiber tubes 53 pass through the multi-layer rotor slip rings 21, the upper flange 26, the upper bearing disk 27, and the lower flange 28. The upper end of the uppermost insulating support column 54 abuts against the rotor power disk 25, and the lower end of the lowermost insulating support column 54 abuts against the rotor bearing disk 29. The upper end of the support steel column 51 passes through the rotor power disk 25 and is locked and fixed by a nut. The lower end of the support steel column 51 passes through the rotor bearing disk 29 and is locked and fixed by a nut, connecting the rotor support structure, the rotor slip ring structure, and the rotor main shaft into an integral whole.

[0053] The rotor power connection box 4 is connected to the part where the upper end of the rotor part 2 extends out of the sheet metal frame 63. The rotor power connection box 4 includes a plurality of insulating partitions of the rotor power connection box and a dust-proof aluminum ring. The dust-proof aluminum ring is fixed on the upper top plate 61. A row of insulating partitions of the rotor power connection box is arranged at the edge of the lower surface of the rotor power disk 25.

[0054] The yaw collector ring of this embodiment is also provided with an electric control part, and the electric control part includes a stator control device, a rotor control device, a cooling fan, a heater, and an NTC thermistor.

[0055] Rotor part installation: Horizontally place the component connecting the lower shaft tube 243 and the rotor bearing disc 29. There are three evenly distributed counterbores on the rotor bearing disc 29 for placing the support steel columns 51 of the rotor. Attach the insulating film 52 to the support steel columns 51 of the rotor. Since the support steel columns 51 of the rotor have threaded structures at both ends, directly place the support steel columns 51 of the rotor on the rotor bearing disc 29 and lock them with nuts to form a temporary cantilever structure. After the fixed support steel columns 51 of the rotor are sleeved with the insulating fiberglass tube 53 of the rotor, after the above installation is completed, install the insulating support columns 54 of the rotor. The insulating support columns 54 of the rotor are tubular stepped shaft structures and can be directly sleeved on the support steel columns 51. Install three for each layer. After installing each layer, install a rotor slip ring 21. There are three evenly distributed mounting through holes on the rotor slip ring 21, which can be directly sleeved on the insulating support columns 54. After installing each layer of rotor slip ring 21, symmetrically install the rotor power connection busbars 22 on the rotor slip ring 21. There are four evenly distributed mounting hole positions on the rotor slip ring 21, and there are two through hole structures on the rotor power connection busbars 22 for fixing on the rotor slip ring 21. The rotor power connection busbars 22 are connected to the rotor slip ring 21 through bolts, and the bolts are tightened and locked through the rotor power connection busbar fixing piece 23. Repeat such actions to install six layers of rotor slip rings 21 in total. After the installation of the rotor slip rings 21 is completed, connect the upper and lower ends of the middle shaft tube 242 to the upper bearing disc 27 and the lower flange disc 28 respectively. Place the structure with the lower flange disc 28 side vertically downward. Both the lower shaft tube 243 and the middle shaft tube 242 have through hole structures, and the two parts are connected by bolts. Connect the structure of the middle shaft tube 242 and the upper shaft tube 241 in the same way. The upper ends of the support steel columns 51 of the rotor pass through the rotor power disc 25, and then tighten the nuts on the parts where the upper ends of the support steel columns 51 pass through.

[0056] Stator installation part: The stator conductive plate 11 is connected to the stator stainless steel support plate 12 by bolts. There are prefabricated nuts on the stator stainless steel support plate 12 to fix structures such as the stator conductive plate 11, the carbon brush frame 141, and the brush pigtail 143. After the stator conductive plate 11 is installed and fixed, the carbon brush frame 141 is installed on the stator conductive plate 11 by bolts, and there are three evenly distributed ones. After installation, the copper-carbon alloy carbon brush 142 and the brush pigtail 143 are connected into a component by bolts. After this component is installed, this component is placed into the carbon brush frame 141. For the installation of the stator part 1, the lower top plate 62 needs to be installed first. There are threaded holes on the lower top plate 62, and the anchor bolts 69 are installed first. After the lower top plate 62 is placed horizontally, the lower end of the stator support steel column 51 passes through the through holes pre-processed on the lower top plate 62, and the stator support steel column 51 is fixed to the lower top plate 62 using nuts. The stator support steel column 51 is pre-attached with the insulating film 52 of the stator. An insulating glass fiber tube 53 of the stator is sleeved outside the insulating film 52, and an insulating support column 54 of the stator is sleeved outside the insulating glass fiber tube 53. The insulating support column 54 of the stator is a tubular stepped shaft structure and can be directly sleeved on the support steel column 51. Four are installed on each layer, and then the stator conductive plate structure is installed. After the stator conductive plate structure is installed, the bearing seat is installed on the lower top plate 62. After installation, the sheet metal frame 63 is assembled by bolt connection. The sheet metal frame 63 consists of eight cross beams and four columns. The bolts are screwed into the upper top plate 61 and the lower top plate 62, and the sheet metal frame 63 is assembled with the upper and lower two top plates. After installation, the above-mentioned rotor part 2 is vertically placed into the stator part 1. There is a stepped structure at the lower end of the lower shaft tube 243 of the rotor part 2, which can be directly inserted into the bearing seat.

[0057] Installation of the stator wiring busbar: The stator wiring busbar 13 is pre-installed with prefabricated nuts and connected to the stator conductive plate 11 by bolts. There are a total of six layers and twelve in all installations.

[0058] Installation of the stator power connection box: First, fix the insulating partition 32 of the stator power connection box. There is a through-hole structure on the insulating partition 32 of the stator power connection box, and there is a threaded hole structure on the sheet metal cross beam, and they can be directly connected by screws. It is fixed on the sheet metal cross beam. Then connect the stator power connection box busbar 31 to the stator power connection busbar 13. There is a bent structure at the rear end of the stator power connection busbar 13. The stator power connection box busbar 31 is pre-installed with prefabricated nuts, and just install bolts for connection during connection. There are a total of six busbars, which are installed according to the phase sequence (1U - 2W), and finally install the power connection bolts.

[0059] Installation of the electric control part: Fix the NTC thermistor on the stator power connection busbar 13 with bolts. There are a total of six, which are used as the stator protection device to control the temperature and as the criterion for using the cooling fan and heater. Fix the NTC thermistor on the rotor slip ring 21 with bolts, which is used as the rotor protection device and as the criterion for outputting signals outward.

[0060] Sheet metal housing installation: There is a cable clamp 33 for placing insulation at the bottom of the stator power connection box sheet metal 68. Part of the sheet metal forms part of the housing, and there is a sheet metal push plate that presses against the cable clamp 33 to achieve a locked state after installing the cable. The structure of the rotor power connection box sheet metal 67 is circular. The sheet metal housing is composed of three pieces of sheet metal with fish scale holes and is installed on the rotor power disk 25. There is a counterbore structure on the rotor power disk 25, and there is a press rivet nut structure on the sheet metal, which can be directly locked with bolts. The sheet metals on both left and right sides are of filter screen and cooling fan structures. The filter screen and the cooling fan are of spring snap structures and can be directly snapped into the sheet metal frames 63 on both sides.

[0061] The implementation principle of the embodiments of this application is as follows: In the use state, a power insertion rod provided by a wind turbine is connected to the fork of the yaw collector ring. When the wind turbine yaws, the fork is fixedly connected to the rotor power disk 25 through bolts. The rotor power disk 25 is fixed on the rotor main shaft tube 24, driving the rotor slip ring 21 to rotate to achieve rotational conduction. Since the copper-carbon alloy carbon brush 142 is pressed by the compression spring 145, the copper-carbon alloy carbon brush 142 contacts the rotor slip ring 21. For the power connection state, power is introduced through the rotor power connection bus 22, and is energized through the rotor slip ring 21 and the copper-carbon alloy carbon brush 142. The current is transferred from the copper-carbon alloy carbon brush 142 to the brush braid 143, and the brush braid 143 transmits it to the stator conductive plate 11. The stator conductive plate 11 is introduced into the stator power connection box bus 31 through the stator power connection bus bar 13, and the stator power connection box bus 31 is transmitted outward through the connected cables.

[0062] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A wind power yaw collector ring, characterized in that: The invention comprises a stator part (1), a rotor part (2), a stator connection box (3), a rotor connection box (4) and a sheet metal shell; the stator part (1) comprises a stator support structure and a plurality of layers of stator conductive plate structures arranged on the stator support structure and opposed to each other; the rotor part (2) comprises a rotor support structure, a plurality of layers of rotor slip ring structures arranged on the rotor support structure and opposed to each other, and a rotor main shaft connected to the rotor slip ring structure; the stator support structure and the rotor support structure both comprise a support steel column (51), an insulating film (52) arranged on the outer surface of the support steel column (51), an insulating glass fiber tube (53) sleeved on the outer layer of the insulating film (52), and a plurality of insulating support columns (54) sleeved on the outside of the insulating glass fiber tube (53); The stator conductive plate structure comprises two stator conductive plates (11) arranged in a centrally symmetrical manner, a stator stainless steel support plate (12) fixedly arranged on the lower surface of each stator conductive plate (11), a stator power busbar (13) connected to the lower surface of each stator conductive plate (11), and a plurality of carbon brush assemblies (14) connected to each stator conductive plate (11), the stator stainless steel support plate (12) being provided with a clearance groove for the stator power busbar (13) to pass through, the stator conductive plate (11) being in an arc shape, with circular through holes penetrating from top to bottom at both ends, and the central angle corresponding to the arc length between the central axes of the two through holes being a right angle.

2. A wind power yaw collector ring according to claim 1, characterized in that: The carbon brush assembly (14) comprises a carbon brush frame (141) detachably connected to a stator conductive plate (11), a copper-carbon alloy carbon brush (142) disposed in the carbon brush frame (141), a brush braid (143) connected between the copper-carbon alloy carbon brush (142) and the stator conductive plate (11), an insulating top block (144) connected to the rear end of the carbon brush frame (141), and a compression spring (145) elastically contacting between the copper-carbon alloy carbon brush (142) and the insulating top block (144).

3. The wind power yaw collector ring according to claim 1, characterized in that: Both ends of the stator conductive plate (11) are connected to a set of stator support structures, the stator conductive plate (11) and the stator stainless steel support plate (12) are provided with through holes for the stator support structure to pass through, the support steel column (51) and the insulating glass fiber tube (53) pass through the multiple layers of stator conductive plates (11), and the upper and lower ends of the insulating support column (54) are respectively abutted against the upper and lower adjacent layers of the stator conductive plate structure; A plurality of groups of carbon brush assemblies (14) are evenly distributed on the stator conductive plate (11) at positions between two groups of stator support structures.

4. A wind power yaw collector ring according to claim 1, characterized in that: The rotor slip ring structure comprises a rotor slip ring (21) in a circular shape, two rotor connection bars (22) connected to each layer of the rotor slip ring (21), and a rotor connection bar fixing plate (23) connected to the lower surface of the rotor slip ring (21); the lower end of the rotor connection bar (22) is fixed to the upper surface of the rotor slip ring (21); the main body is located in the inner ring of the rotor slip ring (21) and extends upward parallel to the central axis of the rotor slip ring (21); the upper end of the rotor connection bar (22) is higher than the uppermost rotor slip ring (21); and the connecting bolts pass through the rotor connection bar (22), the rotor slip ring (21), and the rotor connection bar fixing plate (23) in sequence from top to bottom and are fixed.

5. A wind power yaw collector ring according to claim 4, characterized in that: The rotor main shaft comprises a rotor main shaft tube (24), a rotor power disk (25) connected to the upper end of the rotor main shaft tube (24), an upper flange (26) coaxially arranged below the rotor power disk (25), an upper bearing disk (27) bolted to the lower side of the upper flange (26), a lower flange (28) coaxially arranged below the upper bearing disk (27), a rotor load-bearing disk (29) bolted to the lower side of the lower flange (28), and a bearing seat arranged at the lower end of the rotor main shaft tube (24); a shift fork is connected to the rotor power disk (25).

6. A wind power yaw collector ring according to claim 5, characterized in that: The rotor main shaft tube (24) comprises an upper shaft tube (241), a middle shaft tube (242) and a lower shaft tube (243) which are arranged in sequence from top to bottom; the rotor power disk (25) is detachably connected to the upper end of the upper shaft tube (241); the upper flange (26) is fixedly connected to the lower end of the upper shaft tube (241); the upper bearing disk (27) is fixedly connected to the upper end of the middle shaft tube (242); the lower flange (28) is fixedly connected to the lower end of the middle shaft tube (242); the rotor load-bearing disk (29) is fixedly connected to the upper end of the lower shaft tube (243); and the bearing seat is rotatably connected to the lower end of the lower shaft tube (243).

7. A wind power yaw collector ring according to claim 6, characterized in that: The rotor slip ring (21) is evenly provided with a plurality of through holes extending upward and downward along the circumferential direction. The support steel column (51) and the insulating glass fiber tube (53) pass through the multiple layers of the rotor slip ring (21), the upper flange (26), the upper bearing disk (27), and the lower flange (28). The end of each section of the insulating support column (54) abuts against the rotor slip ring (21). The upper end of the support steel column (51) passes through the rotor power disk (25) and is fixed by a nut. The lower end of the support steel column (51) passes through the rotor load-bearing disk (29) and is fixed by a nut.

8. The wind power yaw collector ring according to claim 1, characterized in that: The stator power connection box (3) comprises a stator power connection box busbar (31) connected between two stator power connection busbars (13) on the same layer, a stator power connection box insulating partition (32) separating the internal space of the stator power connection box (3) from the space where the stator part (1) is located, and a plurality of groups of cable clamps (33) arranged at the bottom of the stator power connection box (3), the end of the stator power connection busbar (13) passes through the stator power connection box insulating partition (32) to the inside of the stator power connection box (3), and the stator power connection box busbar (31) is located in the stator power connection box (3).

9. The wind power yaw collector ring according to claim 1, characterized in that: The sheet metal housing comprises an upper top plate (61), a lower top plate (62), a sheet metal frame (63), a main board surface sheet metal (64), a heat dissipation fan surface sheet metal (65), a filter surface sheet metal (66), a rotor connection box sheet metal (67), a stator connection box sheet metal (68) and anchor bolts (69); the stator part (1) is connected between the upper top plate (61) and the lower top plate (62) via a stator support structure; and the rotor part (2) is connected between the upper top plate (61) and the lower top plate (62) via a rotor main shaft.

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