Wind power yaw collecting ring

Abstract

The invention relates to a wind power yaw collecting ring which comprises a stator part, a rotor part, a stator power connection box, a rotor power connection box and a metal plate shell. The stator part comprises a stator supporting structure and a plurality of layers of stator conductive plate structures which are arranged on the stator supporting structure and are opposite up and down; the rotor part comprises a rotor supporting structure, a plurality of layers of vertically opposite rotor slip ring structures arranged on the rotor supporting structure, and a rotor main shaft connected to the rotor slip ring structures; the stator supporting structure and the rotor supporting structure each comprise a supporting steel column, an insulating film arranged on the outer surface layer of the supporting steel column, an insulating glass fiber pipe arranged on the outer layer of the insulating film in a sleeving mode and a plurality of insulating supporting columns arranged outside the insulating glass fiber pipe in a sleeving mode. The insulating wear-resistant thin film is attached to the surface of the supporting steel column, the insulation grade is improved, when two layers of insulation on the outer portion fail, the stable insulation protection effect can be achieved, and the safety and stability of equipment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation equipment, and in particular to a wind power yaw collector ring. Background Art

[0002] The yaw collector ring of a wind turbine generator is a high-power rotating power transmission mechanism, and its components include but are not limited to collector ring stator, stator side junction box, collector ring rotor, rotor side junction box, and related accessories. Its main function is to transmit the power of the generator in a synchronous rotation or static state with the yaw of the unit under the premise that the incoming and outgoing cables on both sides of the stator and rotor are fixedly laid. The use of collector ring technology allows the wind turbine to yaw adaptively throughout the entire cycle without unwinding the cable, fundamentally solving various problems caused by the non-fixed laying of the twisted cable section of the wind turbine, improving the efficiency of the wind turbine, increasing power generation, and greatly reducing the unit damage rate under extreme weather conditions while improving the yaw efficiency.

[0003] In the related art, the outer layer of the glass fiber tube of the yaw collector ring is covered with an insulating support column. Due to the high humidity, high temperature and low temperature environment, the insulating support column will absorb water and shrink, and the outermost insulation will fail. The inner glass fiber tube will have pores due to the material characteristics, and water vapor will penetrate the pores into the supporting steel column, causing the yaw collector ring to short-circuit and burn. Summary of the invention

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

[0005] The wind turbine yaw collector ring provided in this application adopts the following technical solution:

[0006] A wind power yaw collector ring comprises a stator part, a rotor part, a stator connection box, a rotor connection box and a sheet metal shell; the stator part comprises a stator support structure and a plurality of layers of stator conductive plate structures arranged on the stator support structure and facing each other; the rotor part comprises a rotor support structure, a plurality of layers of rotor slip ring structures arranged on the rotor support structure and facing 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, an insulating film arranged on the outer layer of the support steel column, an insulating glass fiber tube sleeved on the outer layer of the insulating film, and a plurality of insulating support columns sleeved on the outside of the insulating glass fiber tube.

[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 which are arranged in sequence from top to bottom. The rotor power disk is detachably connected to the upper end of the upper shaft tube, the upper flange 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 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 through holes are evenly opened in the circumferential direction on the rotor slip ring, and the supporting steel column and the insulating glass fiber tube pass through the multiple layers of the rotor slip ring, the upper flange, the upper bearing plate and the lower flange. The end of each insulating supporting column abuts against the rotor slip ring, the upper end of the supporting steel column passes through the rotor power plate and is fixed by a nut, and the lower end of the supporting steel column passes through the rotor load-bearing plate and is fixed by a nut.

[0015] As a preferred technical solution of the present application, the stator connection box includes a stator connection box busbar connected between two stator connection busbars on the same layer, a stator connection box insulating partition separating the internal space of the stator connection box from the space where the stator part is located, and multiple groups of cable clamps arranged at the bottom of the stator connection box. The end of the stator connection busbar passes through the stator connection box insulating partition to the inside of the stator connection box, and the stator connection box busbar is located in the stator connection box.

[0016] As a preferred technical solution of the present application, the sheet metal shell includes an upper top plate, a lower top plate, a sheet metal frame, a main board surface sheet metal, a cooling fan surface sheet metal, a filter 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 this application, an insulating wear-resistant film is attached to the surface of the supporting steel column to improve the insulation level. When the two external layers of insulation fail, 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 an open square hole structure, and a square nut is placed. The original twisted wire structure of the brush braid is replaced with a braided wire structure. Since the braided wire structure is a flattened copper tube 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 it to the copper-carbon alloy. Screws are used to pass through the through-hole structure on the brush braid and connect to the square nut to lock the brush braid and the copper-carbon alloy, which is beneficial to the replacement of the brush braid assembly and reduce equipment costs.

[0020] 3. The thickness of the stator conductive plate is reduced. A stainless steel plate is arranged under the stator conductive plate to improve strength and reduce cost. Prefabricated nuts are installed on the stainless steel plate to fix and lock 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 carbon brush is evenly divided. The existing technology uses a 360° evenly divided solution, which wastes the material of the stator conductive plate. Now a separate structure is used to evenly divide the stator conductive plate within a 180° circumference, which can reduce the length and material of the stator conductive plate and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

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

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

[0030] Fig. 9 The internal structure of the stator connection box in the embodiment of the present application is shown in FIG. Figure 1 ;

[0031] Fig.10 The internal structure of the stator connection box in the embodiment of the present application is shown in FIG. Figure 2 ;

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

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

[0034] Fig.13is a schematic structural diagram of a rotor main shaft in an embodiment of the present application;

[0035] Fig.14 is a schematic cross-sectional structure diagram of a support structure in an embodiment of the present application;

[0036] In the figure, 1, stator part; 11, stator conductive plate; 12, stator stainless steel support plate; 13, stator power busbar; 14, carbon brush assembly; 141, carbon brush frame; 142, copper-carbon alloy carbon brush; 143, brush braid; 144, insulating top block; 145, compression spring; 2, rotor part; 21, rotor slip ring; 22, rotor power busbar; 23, rotor power busbar fixing plate; 24, rotor main shaft tube; 241, upper shaft tube; 242, middle shaft tube; 243, lower shaft tube; 25, rotor power disk; 26, upper flange; 27, upper Bearing plate; 28. Lower flange plate; 29. ​​Rotor load-bearing plate; 3. Stator connection box; 31. Stator connection box busbar; 32. Stator connection box insulating partition; 33. Cable clamp; 4. Rotor connection box; 51. Support steel column; 52. Insulating film; 53. Insulating glass fiber tube; 54. Insulating support column; 61. Upper top plate; 62. Lower top plate; 63. Sheet metal frame; 64. Main board surface sheet metal; 65. Cooling fan surface sheet metal; 66. Filter surface sheet metal; 67. Rotor connection box sheet metal; 68. Stator connection box sheet metal; 69. Anchor bolt. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1 -Attached Fig.14 , further details of this application are given.

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

[0039] Embodiment: This 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 connection box 3, a rotor connection box 4 and a sheet metal shell. The stator part 1 is fixedly connected in the sheet metal shell, the rotor part 2 is rotatably arranged in the internal space of the stator part 1, the stator connection box 3 is installed on one side of the sheet metal shell and connected to the stator part 1, and the rotor connection box 4 is installed on the top of the sheet metal shell and connected to the rotor part 2.

[0040] The sheet metal shell includes an upper top plate 61 , a lower top plate 62 , a sheet metal frame 63 , a main board surface sheet metal 64 , a cooling 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 .

[0041] The sheet metal frame 63 is a rectangular frame structure as a whole. The upper top plate 61 and the lower top plate 62 are fixed on the upper and lower sides of the sheet metal frame 63 respectively. The main board surface sheet metal 64 is connected to the front side of the sheet metal frame 63 by bolts. In this embodiment, the main board surface sheet metal 64 is evenly distributed with ventilation and heat dissipation holes. The cooling fan surface sheet metal 65 is detachably connected to the right side of the sheet metal frame 63. The cooling fan surface sheet metal 65 includes a main board and a heat dissipation bellows. The upper and lower cooling fans are installed in the heat dissipation bellows. The filter surface sheet metal 66 is detachably connected to the left side of the sheet metal frame 63. The stator connection box sheet metal 68 is connected to the rear side of the sheet metal frame 63 by bolts. The stator connection box sheet metal 68 is a rectangular box structure with an installation space formed inside. Ventilation and heat dissipation holes are opened on the side and threading holes are set at the bottom. Anchor bolts 69 are connected to the lower top plate 62 to fix the sheet metal shell to other installation foundations.

[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, and 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 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 a thin shaft with external threads at both 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 with 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 with the lower top plate 62, and the insulating film 52 is attached to the outer 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 on the outside of the insulating film 52; in this embodiment, seven sections of insulating support columns 54 are arranged, the insulating support columns 54 are arranged as hollow tubes, the upper and lower ends are arranged as stepped surface structures, and the insulating support columns 54 are sleeved on the insulating glass fiber tube 53.

[0044] The lower end of the lowest insulating support column 54 abuts against the lower top plate 62, and the upper end abuts against the lowest stator conductive plate structure. The upper and lower ends of the five middle insulating support columns 54 respectively abut against the two adjacent upper and lower stator conductive plate structures. The lower end of the uppermost insulating support column 54 abuts against the uppermost stator conductive plate structure, and the upper end abuts against a locking nut. The upper end of the thick shaft of the supporting 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-layer stator conductive plate structure between the seven insulating support columns 54.

[0045] Each layer of the stator conductive plate structure includes two stator conductive plates 11 , two stator stainless steel support plates 12 , two stator power busbars 13 and six groups of carbon brush assemblies 14 . The two stator conductive plates 11 are centrally symmetrically arranged. The stator conductive plates 11 are arc-shaped, and circular through holes are provided at both ends thereof, and the arc length between the central axes of the two through holes corresponds to a right angle. The stator stainless steel support plate 12 is fixed to the lower surface of the stator conductive plate 11 by bolts. The outer contour of the stator conductive plate 11 is the same as the outer contour of the stator stainless steel support plate 12. A clearance groove is provided in the middle of the stator stainless steel support plate 12, so that a part of the lower surface of the stator conductive plate 11 is exposed. Through holes are also provided at both ends of the stator stainless steel support plate 12. One end of the stator power busbar 13 passes through the clearance groove and is fixed to the stator conductive plate 11 by bolts, and the other end passes through 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 along the circumferential direction and connected to the upper surface of the stator conductive plate 11 in the area between the two through holes. The supporting steel columns 51 and insulating glass fiber tubes 53 penetrate each layer of the stator conductive plate 11 and the stator stainless steel support plate 12. A group of supporting steel columns 51 and insulating glass fiber tubes 53 are penetrated at both ends of the stator conductive plate 11 and the stator stainless steel support plate 12, and are supported by insulating support columns 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 a rectangular tube structure with openings at both 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 an open square hole structure and a square nut is placed. The brush braid 143 is set as a braided wire structure. The two ends of the braided wire structure are flattened with copper tubes and open a through-hole structure. The rear end of the lower side of the copper-carbon alloy carbon brush 142 is processed into a stepped platform structure for placing the brush braid 143 and connecting it to the copper-carbon alloy carbon brush 142. Bolts are used to pass through the through-hole structure on the brush braid 143 and connect to the square nut 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 to an insulating top block 144 by bolts. The width of the insulating top block 144 is smaller than the upper and lower widths of the rear opening of the carbon brush frame 141. The lower side of the insulating top block 144 is provided with an opening for inserting the brush braid 143 into the carbon brush frame 141. The compression spring 145 is elastically in contact between the copper-carbon alloy carbon brush 142 and the insulating top block 144. A positioning protrusion is provided on the inner side of the insulating top block 144, and a groove is provided on the inner side 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 connection box 3 includes a stator connection box busbar 31, a stator connection box insulating partition 32 and a cable clamp 33. Each layer of the stator conductive plate structure is connected to a stator connection box busbar 31, and the two ends of the stator connection box busbar 31 are respectively connected to the ends of the two stator connection busbars 13 on the same layer extending into the stator connection box 3. The stator connection box busbar 31 is provided with a plurality of terminals, and the terminals on the upper and lower opposite stator connection box busbars 31 are arranged in an upper and lower stator connection box. The insulating partition 32 of the stator connection box is connected to the sheet metal frame 63 by bolts to separate the internal space of the stator connection box 3 from the space where the stator part 1 is located in the sheet metal frame 63; six groups of cable clamps 33 are arranged at the bottom of the stator connection box 3 to clamp and fix the wires connected to each stator connection box busbar 31.

[0048] The rotor part includes three groups of rotor support structures, six layers of rotor slip ring structures connected to the three groups of rotor support structures and arranged at the center of the rotor slip ring structure. In this embodiment, the rotor support structure is the same as the stator support structure, and the difference lies in the length. In this embodiment, the rotor support structure also includes a support steel column 51, an insulating film 52, an insulating glass fiber tube 53 and an insulating support column 54, wherein the insulating support column 54 is provided with seven sections.

[0049] Each layer of rotor slip ring structure includes a rotor slip ring 21, a rotor power bar 22 and a rotor power bar fixing plate 23. The rotor slip ring 21 is in a circular shape and is arranged opposite to the inner and outer sides of 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 are opened in the circumferential direction on the rotor slip ring 21, which are used to support the steel column 51 and the insulating glass fiber tube 53 to pass through. The six layers of rotor slip rings 21 are sandwiched between seven sections of insulating support columns 54. Two rotor power bars 22 are connected to each layer of rotor slip ring 21. The lower end of the rotor power bar 22 is transversely bent and fixed on the upper surface of the rotor slip ring 21, and 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 power bar 22 is higher than the uppermost rotor slip ring 21. The rotor power bars 22 of the six layers of rotor slip rings 21 form a circle and have the same upper end height, extending into the rotor power box 4. The rotor power bar fixing plate 23 is arranged on the lower surface of the rotor slip ring 21 at a position opposite to the rotor power bar 22 above and below. The connecting bolts pass through the rotor power bar 22, the rotor slip ring 21 and the rotor power bar fixing plate 23 from top to bottom in sequence 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 bearing disk 29 and a bearing seat which are arranged from top to bottom and coaxially connected to the rotor main shaft tube 24.

[0051] The rotor main shaft tube 24 includes 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, and the diameters of the three tubes are the same. The rotor power disk 25 is fixedly connected to the upper end of the upper shaft tube 241, and 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, and a shift fork is installed on 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 plate 27 by bolts. The upper bearing plate 27 is welded to the upper end of the middle shaft tube 242. The upper top plate 61 is connected to four centrifugal bearings (not shown in the figure). The rotation axes of the four centrifugal bearings are located on the same circumferential surface and the central axis of this circumferential surface coincides with the central axis of the upper bearing plate 27. A centrifugal positioning ring is fixed to the upper surface of the upper bearing plate 27. The four centrifugal bearings roll in contact with the inner wall of the centrifugal 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. The six-layer rotor slip ring 21 is all sleeved on the outside of the middle shaft tube 242. The lower flange 28 is connected to the rotor load-bearing plate 29 by bolts. The rotor load-bearing plate 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 the bearing seat is fixedly installed on the lower top plate 62.

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

[0053] The rotor power connection box 4 is connected to the part of the sheet metal frame 63 extending out from the upper end of the rotor part 2. The rotor power connection box 4 includes multiple rotor power connection box insulating partitions and a dustproof aluminum ring. The dustproof aluminum ring is fixed on the upper top plate 61. The rotor power connection box insulating partitions are arranged in a row on the edge of the lower surface of the rotor power disk 25.

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

[0055] Installation of the rotor part: Place the lower shaft tube 243 horizontally and connect it to the rotor bearing plate 29. There are three countersunk holes evenly distributed on the rotor bearing plate 29 for placing the rotor support steel column 51. Attach the rotor support steel column 51 to the insulating film 52. Since the rotor support steel column 51 has a threaded structure at both ends, directly place the rotor support steel column 51 on the rotor bearing plate 29 and tighten it with a nut to create a temporary cantilever structure. The fixed rotor support steel column 51 is covered with the insulating glass fiber tube 53 of the rotor. After the above installation is completed, install the rotor insulation support column 54. The rotor insulation support column 54 is a tubular stepped shaft structure and can be directly mounted on the support steel column 51. Three are installed on each layer. After each layer is installed, a rotor slip ring 21 is installed. There are three evenly distributed installation through holes on the rotor slip ring 21, which can be directly mounted on the insulation support column 54. Each time a layer of rotor slip ring 21 is installed, a rotor connecting bar 22 is symmetrically installed on the rotor slip ring 21. There are four evenly distributed installation holes on the rotor slip ring 21. There are two through-hole structures on the rotor connecting bar 22, which are used to be fixed on the rotor slip ring 21. The rotor connecting bar 22 is connected to the rotor slip ring 21 by bolts, and the bolts are tightened through the rotor connecting bar fixing plate 23 to lock. This action is repeated, and a total of six layers of rotor slip rings 21 are installed. After the rotor slip ring 21 is installed, the upper and lower ends of the middle shaft tube 242 are connected to the upper bearing disk 27 and the lower flange 28 respectively, and the structure with the lower flange 28 side is placed vertically downward. The lower shaft tube 243 and the middle shaft tube 242 both have through-hole structures, and the two parts are connected by bolts. The structure of the middle shaft tube 242 and the upper shaft tube 241 is connected in the same way. The upper end of the rotor support steel column 51 passes through the rotor power disk 25, and then the nut is tightened on the part passing through the upper end of the support steel column 51.

[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 the stator conductive plate 11, the carbon brush frame 141, the brush braid 143 and other structures. 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 three are evenly distributed. After the installation is completed, the copper-carbon alloy carbon brush 142 and the brush braid 143 are connected to form a component by bolts. After the installation of this component, put this component into the carbon brush frame 141. The installation of the stator part 1 requires the installation of the lower top plate 62 first. There are threaded holes on the lower top plate 62. Install the anchor bolts 69 first. After the lower top plate 62 is placed horizontally, pass the lower end of the stator support steel column 51 through the pre-processed through hole on the lower top plate 62, and use nuts to fix the stator support steel column 51 to the lower top plate 62. The stator support steel column 51 is pre-attached with the stator insulation film 52, and the insulation film 52 is covered with the stator insulation glass fiber tube 53, and the insulation glass fiber tube 53 is covered with the stator insulation support column 54. The stator insulation support column 54 is a tubular stepped shaft structure, which can be directly mounted 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 the installation is completed, the sheet metal frame 63 is assembled by bolt connection. The sheet metal frame 63 consists of eight cross beams and four columns, which are screwed into the upper top plate 61 and the lower top plate 62 by bolts, and the sheet metal frame 63 is assembled with the upper and lower top plates. After the installation is completed, the above-mentioned rotor part 2 is placed vertically in the stator part 1. The lower end of the lower shaft tube 243 of the rotor part 2 is provided with a stepped structure, which can be directly inserted into the bearing seat.

[0057] Installation of stator connection busbar: The stator connection busbar 13 is installed with prefabricated nuts in advance and connected to the stator conductive plate 11 by bolts. A total of six layers and twelve nuts are installed.

[0058] Installation of stator connection box: First fix the insulating partition 32 of the stator connection box. There is a through-hole structure on the insulating partition 32 of the stator connection box, and there is a threaded hole structure on the sheet metal beam, which can be directly connected by screws. Fix it on the sheet metal beam. Then connect the stator connection box busbar 31 with the stator power busbar 13. The rear end of the stator power busbar 13 has a bending structure. Prefabricated nuts are installed on the stator connection box busbar 31 in advance. When connecting, just install the bolts. There are six busbars in total, 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 to the stator power busbar 13 with bolts, a total of six, as a stator protection device to control the temperature and as a criterion for the use of cooling fans and heaters. Fix the NTC thermistor to the rotor slip ring 21 with bolts, as a rotor protection device and as a criterion for outputting signals to the outside.

[0060] Installation of sheet metal shell: The bottom of the stator connection box sheet metal 68 has an insulated cable clamp 33, and the sheet metal part is used as a part of the shell. There is a sheet metal push plate to hold the cable clamp 33 to achieve a locked state after the cable is installed. The rotor connection box sheet metal 67 has a circular structure, and the sheet metal shell is three pieces of sheet metal with fish scale holes. It is installed on the rotor power disk 25. There is a countersunk structure on the rotor power disk 25, and there is a rivet nut structure on the sheet metal, which can be directly locked with bolts. The sheet metal on the left and right sides is the filter and cooling fan structure. The filter and cooling fan are spring buckle structures and can be directly snapped into the sheet metal frames 63 on both sides.

[0061] The implementation principle of the embodiment of the present application is as follows: in the use state, the wind turbine provides a power rod, which is connected to the fork of the yaw collector ring. When the wind turbine yaws, the fork is fixed to the rotor power disk 25 by bolt connection, and the rotor power disk 25 is fixed to the rotor main shaft tube 24, driving the rotor slip ring 21 to rotate and realize rotary conduction. Since the copper-carbon alloy carbon brush 142 is subjected to the pressure of the compression spring 145, the copper-carbon alloy carbon brush 142 is in contact with the rotor slip ring 21. In the power-on state, the rotor power bar 22 is powered, and the copper-carbon alloy carbon brush 142 is powered through the rotor slip ring 21. The current is transferred to the brush braid 143 through the copper-carbon alloy carbon brush 142, and the brush braid 143 is transmitted to the stator conductive plate 11. The stator conductive plate 11 is introduced into the stator power box busbar 31 through the stator power busbar 13, and the stator power box busbar 31 is transmitted outward through the connected cable.

[0062] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present 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 facing 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 facing 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).

2. A wind power yaw collector ring according to claim 1, characterized in that: The stator conductive plate structure comprises two arc-shaped 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); a clearance groove for the stator power busbar (13) to pass through is provided on the stator stainless steel support plate (12).

3. A wind power yaw collector ring according to claim 2, 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).

4. A wind power yaw collector ring according to claim 2, 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). 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.

5. The 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.

6. A wind power yaw collector ring according to claim 5, 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 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); and a shift fork is connected to the rotor power disk (25).

7. A wind power yaw collector ring according to claim 6, 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; a rotor power disk (25) is detachably connected to the upper end of the upper shaft tube (241); an upper flange (26) is fixedly connected to the lower end of the upper shaft tube (241); an upper bearing disk (27) is fixedly connected to the upper end of the middle shaft tube (242); a lower flange (28) is fixedly connected to the lower end of the middle shaft tube (242); a rotor bearing disk (29) is fixedly connected to the upper end of the lower shaft tube (243); and a bearing seat is rotatably connected to the lower end of the lower shaft tube (243).

8. A wind power yaw collector ring according to claim 7, 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 multi-layer 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 bearing disk (29) and is fixed by a nut.

9. The wind power yaw collector ring according to claim 2, characterized in that: The stator connection box (3) comprises a stator connection box busbar (31) connected between two stator connection busbars (14) on the same layer, a stator connection box insulating partition (32) separating the internal space of the stator 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 connection box (3); the end of the stator connection busbar (14) passes through the stator connection box insulating partition (32) to the inside of the stator connection box (3); and the stator connection box busbar (31) is located in the stator connection box (3).

10. 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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