CN111193355A - Driftage collecting ring cooling system - Google Patents
Driftage collecting ring cooling system Download PDFInfo
- Publication number
- CN111193355A CN111193355A CN202010136622.2A CN202010136622A CN111193355A CN 111193355 A CN111193355 A CN 111193355A CN 202010136622 A CN202010136622 A CN 202010136622A CN 111193355 A CN111193355 A CN 111193355A
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- brush
- heat dissipation
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- 238000001816 cooling Methods 0.000 title claims abstract description 14
- 230000017525 heat dissipation Effects 0.000 claims abstract description 52
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 244000185238 Lophostemon confertus Species 0.000 claims description 32
- 230000006835 compression Effects 0.000 claims description 29
- 238000007906 compression Methods 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 22
- 230000000712 assembly Effects 0.000 claims description 18
- 238000000429 assembly Methods 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 9
- 239000012212 insulator Substances 0.000 description 9
- 238000010248 power generation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/28—Cooling of commutators, slip-rings or brushes e.g. by ventilating
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/003—Structural associations of slip-rings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/141—Means for supporting or protecting brushes or brush holders for cooperation with slip-rings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a yawing collecting ring heat dissipation system which comprises a box body, a slip ring stator arranged in the box body, a slip ring rotor arranged in the slip ring stator, a protective cover, a rotor driving part and a fan, wherein the protective cover is arranged on the slip ring stator; the protective cover is fixed in the middle of the upper end face of the box body; the fans are respectively fixed at the lower parts of two opposite side surfaces of the box body and are positioned at two sides of the center line of the side surfaces in the width direction; one end of the rotor driving piece is inserted into the protective cover and is connected with the slip ring rotor; an air flow channel is arranged between the rotor driving piece and the protective cover. The yawing collecting ring heat dissipation system has the advantages of simple structure and good cooling effect, and ensures that the yawing collecting ring can work for a long time.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a yaw collecting ring heat dissipation system.
Background
With the continuous development of wind power generation systems in China, the wind power industry has higher requirements on the reliability and the power generation efficiency of wind turbines, and the collecting ring is widely applied as one of the most important parts of the wind turbines. The yaw collecting ring is taken as one of the collecting rings, so that the yaw collecting ring is gradually favored by users at present, the yaw collecting ring is independently arranged on a tower drum platform below a cabin, a rotor and the cabin synchronously rotate during yaw, the space of the tower drum is much smaller than that of the cabin, a large amount of heat is generated on the contact surface of a slip ring rotor slip ring and an electric brush due to mechanical loss and electrical loss, the temperature rise of the collecting ring needs to be controlled within an acceptable range, and the application safety is guaranteed. Therefore, a heat dissipation structure of the yawing collecting ring needs to be invented to adapt to the characteristics of the yawing collecting ring.
Disclosure of Invention
The invention provides a radiating system of a yawing collecting ring, which solves the problem that the existing yawing collecting ring is poor in radiating effect.
The technical means adopted by the invention are as follows:
a yaw collecting ring heat dissipation system comprises a box body, a slip ring stator arranged in the box body, a slip ring rotor arranged in the slip ring stator, a protective cover, a rotor driving part and a fan, wherein the protective cover is arranged on the slip ring stator; the protective cover is fixed in the middle of the upper end face of the box body; the fans are respectively fixed at the lower parts of two opposite side surfaces of the box body and are positioned at two sides of the center line of the side surfaces in the width direction; one end of the rotor driving piece is inserted into the protective cover and is connected with the slip ring rotor; an air flow channel is arranged between the rotor driving piece and the protective cover.
Further, the slip ring stator comprises a plurality of first insulating pull rods and a plurality of groups of annular plate assemblies mounted on the first insulating pull rods; the multiple groups of annular plate assemblies are arranged at intervals along the axial direction of the first insulating pull rod; the annular plate assembly comprises an annular plate, a brush assembly, a support and a bus bar, wherein the annular plate is provided with a plurality of brush assemblies which can be in contact with the rotor slip ring, and the bus bar is arranged on the annular plate through the support and connected with the brush assembly.
Furthermore, a plurality of heat dissipation holes are formed in the annular plate.
Further, the electric brush assembly comprises a brush box, a brush body, a compression spring pressing plate and a brush braid;
the brush box is installed on the annular plate, be equipped with brush body installation cavity in the brush box, the one end of the brush body be equipped with can with the slip ring contact surface of rotor sliding ring contact, the other end with brush pigtail fixed connection, the brush body is arranged in the brush body installation cavity just is equipped with the one end orientation of slip ring contact surface the center of annular plate, the brush body is fixed with the one end of brush pigtail is equipped with compression spring, the compression spring clamp plate is fixed make on the brush box compression spring one end with brush body butt, the other end with compression spring clamp plate butt.
Furthermore, one end of the brush body, which is provided with the slip ring contact surface, is also provided with a first heat dissipation groove.
Furthermore, the brush body and the inner side wall of the brush body installation cavity are provided with heat dissipation channels.
Furthermore, a second heat dissipation groove is further formed in the brush box.
Further, the slip ring rotor comprises a central pipe, an insulating sleeve, a first fixed disc, a second fixed disc, a plurality of groups of slip ring assemblies and a plurality of second insulating pull rods;
the central tube is sleeved with the insulating sleeve, the lower end of the central tube is fixedly provided with the first fixed disc, the upper end of the central tube is fixedly provided with the second fixed disc, one end of the second insulating pull rod is connected with the first fixed disc, and the other end of the second insulating pull rod is connected with the second fixed disc;
slip ring subassembly includes terminal and the annular sliding ring of circle, circumference spaced being equipped with on the inside wall of sliding ring is protruding to a plurality of installation arch of slip ring center, the terminal is installed in the installation arch is last, still be equipped with second pull rod mounting hole in the installation arch, the slip ring subassembly cover is in insulation support is last, just the insulating pull rod of second passes second pull rod mounting hole will the spaced installation of multiunit slip ring subassembly is in between first fixed disk and the second fixed disk.
Furthermore, a bearing is installed at the upper end of the first insulating pull rod, and the outer diameter of the bearing is in contact with the outer surface of the second fixed disc.
Compared with the prior art, the yaw collecting ring heat dissipation system has the advantages that the fans are arranged on two opposite side surfaces of the box body respectively, the two groups of fans are arranged in a staggered mode, cooling air blown into the box body by the fans rises spirally in the box body, heat dissipation of the collecting ring is optimized, the annular plate is provided with the heat dissipation holes, the electric brush body, the brush body installation cavity and the brush box are provided with the heat dissipation grooves, an effective heat dissipation air path is formed, and safe and reliable work of the yaw collecting ring is guaranteed.
Drawings
Fig. 1 is a structural diagram of a yaw slip ring heat dissipation system disclosed in embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of an air path simulation of the yaw slip ring cooling system according to the present disclosure;
FIG. 3 is a block diagram of a slip ring stator;
FIG. 4 is a block diagram of an annular plate assembly;
FIG. 5 is a block diagram of a brush assembly;
FIG. 6 is an exploded view of the brush assembly;
FIG. 7 is a block diagram of a brush box;
FIG. 8 is a block diagram of a brush body and an armature;
FIG. 9 is an assembly view of the brush body and brush box;
FIG. 10 is a view showing the structure of a ring plate;
FIG. 11 is a front view of the slip ring rotor;
FIG. 12 is a cross-sectional view of a slip ring rotor;
FIG. 13 is a block diagram of a center tube;
FIG. 14 is a structural view of a first fixed disk;
FIG. 15 is an assembly view of the center tube, ferrule and first retaining disk;
FIG. 16 is a block diagram of a slip ring;
fig. 17 is an assembly view of the slip ring rotor and the slip ring stator.
In the figure: 1. a case, 10, an upper cover plate, 11, a lower cover plate, 12, a side plate, 120, a center line of a side plate width direction, 13, a case frame, 14, a fan, 15, a shield, 16, a rotor driving member, 160, a rotor driving member body, 161, a first flange, 17, a first insulation tie bar, 18, an air flow passage, 2, an annular plate assembly, 20, an annular plate, 201, a heat dissipation hole, 202, a first tie bar installation hole, 22, a bracket, 23, a bus bar, 24, an insulator, 3, a brush assembly, 30, a brush box, 300, a brush installation cavity, 301, a heat dissipation channel, 302, a second heat dissipation groove, 304, a fixing lug, 305, a threaded hole, 31, a brush, 310, a slip ring contact surface, 311, a first heat dissipation groove, 32, a compression spring, 33, a compression spring pressing plate, 34, a brush braid, 4, a slip ring rotor, 40, a center pipe, 41, an insulation sleeve, 42, a first fixing disk, 43. the second fixing plate, 44, the slip ring assembly, 45, the second insulating pull rod, 440, the terminal post, 441, the slip ring, 442, the mounting protrusion, 443 and the second pull rod mounting hole.
Detailed Description
As shown in fig. 1, the yaw slip ring heat dissipation system disclosed in the present invention includes a case 1, a slip ring stator installed in the case 1, and a slip ring rotor 4 installed in the slip ring stator, where the case 1 includes an upper cover plate 10, a lower cover plate 11, 4 side plates 12, and a case frame 13, the upper cover plate 10 and the lower cover plate 11 are respectively fixed at upper and lower ends of the case frame 13, the 4 side plates 12 are respectively fixed on the 4 side plates 12 of the case frame 13, the slip ring stator is installed in the case, the slip ring stator is installed with the slip ring rotor, the slip ring rotor can rotate in the slip ring stator for power transmission, the upper cover plate 10 of the case 1 is installed with a protective cover 15 having ventilation meshes, one end of the slip ring rotor located on the upper cover plate 10 is installed with a rotor driving part 16, the rotor driving part 16 includes a tubular rotor driving part body 160, and a first flange 161 and a second flange (not, the rotor drive 16 projects into the shroud and the second flange is connected to the end of the slip ring rotor, and the first flange 161 is connected to the nacelle, which can drive the slip ring rotor via the rotor drive into rotation in the slip ring stator. Two fans 14 are respectively arranged on two opposite side plates 12 (two side surfaces on the left and the right of the box body are shown in the figure) of the box body 1, and the two fans 14 are positioned on two sides of a width direction central line 120 of the side surfaces (the fan on the right side plate is positioned at the front end of the width direction central line of the right side plate in the figure, and the fan on the left side plate is positioned at the rear end of the width direction central line of the left side plate); one end of the rotor driving part 16 is inserted into the protective cover 15 and is connected with the slip ring rotor; an air flow passage 18 is formed between the rotor driving member 16 and the protection cover 15. In the invention, because the fans 14 are respectively arranged on the two opposite side surfaces of the box body 1 and are arranged in a staggered manner, as shown in fig. 1 and fig. 2, fig. 2 is a simulation analysis of an air path made by the method, when the two fans work, the fans blow outside cold air into the box body, and the cold air forms a spiral air path from bottom to top in the box body, namely, the right fan flows the cooling air clockwise from the front part of the box body to the rear part of the box body and spirally rises, the left fan flows the cooling air clockwise from the rear part of the box body to the front part of the box body and spirally rises, and finally enters an air flow channel between the rotor driving piece and the protective cover from the center of the upper end of the box body and is discharged from the protective cover.
Further, as shown in fig. 3 and 4, the slip ring stator comprises a plurality of first insulating tie bars 17 and a plurality of sets of annular plate assemblies 2 mounted on the first insulating tie bars 17; in the figure, the number of the first insulating pull rods 17 is 3, threads are arranged at two ends of each first insulating pull rod 17, an insulating sleeve is bonded on each first insulating pull rod 17, and two ends of each first insulating pull rod 17 can be fixedly connected with the upper cover plate 10 and the lower cover plate 11 of the box body 1 through nuts. The plurality of groups of annular plate assemblies 2 are arranged at intervals along the axial direction of the first insulating pull rod 17, as shown in fig. 4, each annular plate assembly 2 includes an annular plate 20, a brush assembly 3, a bracket 22 and a bus bar 23, the annular plate 20 is provided with a plurality of first pull rod mounting holes 202 with the same number as that of the first insulating pull rod 17, the first insulating pull rod 17 passes through the first pull rod mounting holes 202, the first insulating pull rod 17 is sleeved with an insulator 24 for separation, specifically, insulators 24 are arranged between the upper cover plate 10 and the adjacent annular plate 20, between the adjacent two annular plates 20 and between the lower cover plate 11 and the adjacent annular plate 20, the insulators are made of insulating materials, the centers of the insulators are provided with through holes for the insulating pull rods to pass through, the two ends of the insulators are provided with stop openings capable of being matched with the first pull rod mounting holes 202 on the annular plates 20, the insulator is sleeved on the first insulating pull rod and matched with the first pull rod mounting hole on the annular plate through the rabbets at two ends so as to arrange the plurality of annular plate components between the upper cover plate and the lower cover plate at intervals.
The annular plate 20 is provided with a plurality of brush assemblies 3 capable of contacting with a rotor slip ring, 12 brush assemblies are arranged on one annular plate, the bus bar 23 is arranged on the outer side of the annular plate 20 through the bracket 22, and the bus bar 23 is connected with the brush assemblies 3.
As shown in fig. 5 and 6, brush assembly 3 includes brush box 30, brush body 31, compression spring 32, compression spring holder 33, and shunt 34; the brush box 30 is mounted on the annular plate 20, in this embodiment, as shown in fig. 7, two fixing lugs 304 are provided on two sides of the brush box 30, the brush box 30 is fixed on the annular plate 20 by bolts, a brush body mounting cavity 300 is provided in the brush box 30, as shown in fig. 8, one end of the brush body 31 is an arc-shaped slip ring contact surface 310 capable of contacting with a rotor slip ring, and the other end is fixedly connected with the brush body 34, in this embodiment, the brush body 34 is flat and riveted with the brush body 31, the brush body 31 is disposed in the brush body mounting cavity 300, the end provided with the brush contact surface 310 faces the center of the annular plate 20, so that the slip ring contact surface 310 contacts with the rotor slip ring disposed in the annular plate 20, the end of the brush body 31 to which the brush body 34 is fixed is provided with the compression spring 32, one end of the brush box 30 close to the brush body 34 is provided with a threaded hole 305, two ends of the compression spring pressing plate 33 are fixed on one end of the brush box 30 close to the brush body 34 by bolts 35, one end of the compression spring 32 is abutted to the brush body 31, the other end of the compression spring is abutted to the compression spring pressing plate 33, in the embodiment, the brush body 31 is provided with a groove 311, the compression spring pressing plate 33 is provided with a cylindrical protrusion 330, one end of the compression spring 32 is arranged in the groove 311, the other end of the compression spring is sleeved on the cylindrical protrusion 330, the compression spring 32 can push the brush body 31 to enable a slip ring contact surface to be in close contact with a rotor slip ring so as to reduce the resistance between the brush body and the rotor slip ring, the compression spring pressing plate is made of nylon PA66 insulating materials, the compression spring is a cylindrical spiral spring, and a brush box is made of cast aluminum materials. One end of a bracket 22 is fixed on one side surface of the annular plate 20 through a bolt, the other end of the bracket 22 extends out from the outer edge of the annular plate, a bus bar 23 is of an arc structure, the bus bar 23 is fixed at the outer end of the bracket 22 through a bolt, so that the bus bar 23 is arranged along the outer circumference of the annular plate 20, preferably, a gap is formed between the bus bar and the annular plate so as to facilitate ventilation and heat dissipation, the other end of a brush braid 34 is fixed on the bus bar 23 through a bolt, an output terminal 230 of the bus bar is connected with an output bus bar of a collector ring junction box, and current on a rotor slip ring can be transmitted to the collector ring junction box through a brush body, the brush braid and the bus bar. The collecting ring stator structure disclosed by the invention is provided with the annular plate, and the annular plate can be simultaneously provided with the plurality of electric brush assemblies, so that the current transmission capacity is enhanced.
Compared with the existing brush assembly, the brush assembly disclosed by the invention has the following advantages: the existing brush assembly generally includes a brush box, a brush, and a spring, and is designed mainly based on a slip ring rotating at a high speed, so the existing brush assembly is designed according to the following operational experience: a layer of oxide film is generated during the application process of the electric brush and the conductive slip ring, and the oxide film can be kept in a stable range when the slip ring rotates at a high speed, so that the contact resistance of the slip ring and the electric brush is effectively controlled. The elasticity of the spring needs to be controlled in a proper range, and the small elasticity can cause the contact resistance of the electric brush and the conductive slip ring to be increased, so that the temperature rise is increased; the brush is seriously worn due to large elastic force, so the spring is generally a constant-pressure coil spring.
The stator structure of the invention is mainly used for the yawing collecting ring rotating at low speed, because the rotating speed of the rotor of the yawing collecting ring is synchronous with the rotating speed of the engine room, the rotating speed of the engine room is very low (about 0.1r/min), and compared with the brush conducting structure of the collecting ring rotating at high speed, the brush conducting structure has low rotating speed, and the oxidation film between the brush and the slip ring is difficult to control in a stable range through the annular surface friction of the high-speed rotation, so that the contact resistance between the brush and the slip ring is gradually increased. Increasing the elastic force of the spring is an effective means for controlling the contact resistance of the brush and the slip ring, and the conventional constant-pressure coil spring has limitations in that the installation space needs to be increased if the elastic force is increased. According to the invention, the electric brush assembly comprises the brush box, the brush body, the compression spring pressing plate and the brush braid, and the compression spring can provide larger elastic force on the basis of not increasing the volume of the electric brush assembly, so that the brush body can be in close contact with the rotor slip ring, the resistance value between the brush body and the rotor slip ring is ensured to be smaller (the resistance is increased due to poor contact between the brush body and the rotor slip ring), the power consumption is further reduced, and the generation of heat is reduced. Simultaneously, the brush subassembly of this structure still has advantages such as maintenance and change convenience, specifically, when certain brush subassembly need be maintained or need be changed because of wearing and tearing, only need unpack the compression spring clamp plate of the brush subassembly that corresponds apart, can lift the brush body off in order to maintain or change the brush body, and need not dismantle whole brush subassembly in order to change, has saved the maintenance cost, and simple structure is convenient for processing and installation simultaneously.
Further, as shown in fig. 7, the brush box 30 is further provided with a second heat dissipation groove 302, and specifically, the upper box wall of the brush box 30 is provided with a plurality of second heat dissipation grooves in a long strip shape, so as to facilitate heat dissipation of the brush body. As shown in fig. 9, the brush body has a first heat dissipation groove, the first heat dissipation groove 312 is further disposed at the end of the brush body 31 where the slip ring contact surface 310 is disposed, in this embodiment, the first heat dissipation groove 312 is an open groove formed at the end of the slip ring contact surface 310 and communicating the upper surface and the lower surface of the brush body 31, preferably, the first heat dissipation groove forms an angle with the upper surface and the lower surface of the brush body, and the first heat dissipation groove is disposed on the brush body, which is beneficial for heat dissipation of the brush body. Further, the brush body 31 and the inner side wall of the brush body installation cavity 300 are provided with heat dissipation channels 313, specifically, a plurality of open grooves which penetrate through the front end face and the rear end face of the brush box can be processed on the inner side wall of the brush body installation cavity 300, when the brush body is installed in the brush box, the open grooves on the inner side wall of the brush body installation cavity 300 form the heat dissipation channels, and cold air blown into the box body by a fan can pass through the open grooves, so that the heat dissipation of the electric brush assembly is further facilitated.
Further, a plurality of heat dissipation holes 201 are further formed in the annular plate 20, specifically, a plurality of through holes are formed in the annular plate in the circumferential direction, and cooling air blown by the cooling fan of the yawing slip ring can pass through the heat dissipation holes from bottom to top, so that the heat dissipation effect of the yawing slip ring is improved.
Further, as shown in fig. 7 and 10, the annular plate 20 is provided with positioning grooves 200 radially arranged, the brush box 30 is provided with a positioning protrusion 301 capable of being engaged with the positioning groove 200, and when the brush box 30 is mounted on the annular plate 20, the positioning protrusion 301 is placed in the positioning groove 200, specifically, a plurality of radial open slots are processed on the inner circumference side of the annular plate 20 (the central lines of the open slots pass through the center of the annular plate), a strip-shaped convex structure is processed on the bottom surface of the brush box, when the brush component is arranged on the annular plate, the positioning bulge is directly inserted into the positioning groove to realize the quick positioning of the brush component, then the brush box is fixed on the annular plate through bolts, the concentricity of a plurality of electric brush components can be ensured by the positioning groove and the positioning bulge, and then guarantee the intimate contact between brush body and the rotor sliding ring, reduce the resistance between brush body and the rotor sliding ring.
As shown in fig. 11 and 12, the slip ring rotor 4 of the present invention includes a central tube 40, an insulating sleeve 41, a first fixed disk 42, a second fixed disk 43, a plurality of sets of slip ring assemblies 44, and a plurality of second insulating tie rods 45; as shown in fig. 13, a plurality of circumferentially arranged sliding grooves 401 are formed on the outer side wall of the lower end of the central tube 40, a first fixed disk clamping block 400 is formed between two adjacent sliding grooves 401, an annular groove 402 and a collar clamping surface 403 are further formed on the central tube 40, as shown in fig. 15, a collar 46 is fixed on the collar fastening surface 403, the collar 46 and the collar fastening surface 403 are fixed together in an interference fit manner, the outer wall of the collar 46 and the inner diameter of the insulating sleeve 41 are assembled in an interference fit manner, as shown in fig. 14, a plurality of circular arc-shaped locking platforms 420 are circumferentially spaced in the inner diameter of the first fixed disk 42, the first fixed disk 42 can be inserted into the central tube 40 from the lower end, and the clamping table part of the first fixing disc can slide into the annular groove 402 through the sliding groove, when the first fixing disc 42 enters the annular groove 402 and then rotates for a certain angle, the clamping table and the first fixing disc clamping block 400 are clamped together, and the lantern ring 46 is fixedly connected with the first fixing disc 42 through the bolt. The insulating sleeve 41 is sleeved on the central tube 40, the spigot is arranged on the second fixing disc 43, the second fixing disc 43 is clamped at the upper end of the central tube 40, threads are arranged at two ends of the second insulating pull rod 45, the lower end of the second insulating pull rod 45 is fixedly connected with the first fixing disc 42 through a nut, and the upper end of the second insulating pull rod is connected with the second fixing disc 43 through a nut. A plurality of slip ring assemblies 44 are fixed on the second insulating pull rod, as shown in fig. 16, each slip ring assembly 44 includes a terminal 440 and a circular ring-shaped slip ring 441, an insulator 444 is sleeved on the terminal 440, a plurality of mounting protrusions 442 protruding toward the center of the slip ring are circumferentially arranged on the inner side wall of the slip ring 441 at intervals, the terminal 440 is mounted on the mounting protrusions 442, second pull rod mounting holes 443 are further formed in the mounting protrusions 442, the slip ring assemblies 44 are sleeved on the insulating sleeves 41, the second insulating pull rods 45 penetrate through the second pull rod mounting holes 443, the sets of slip ring assemblies are mounted between the first fixing disc 42 and the second fixing disc 43 at intervals, insulators are mounted on two adjacent slip ring assemblies, and the specific structure is the same as that of the stator structure. Be equipped with insulation support in the sliding ring rotor for when the cooling wind that the fan insufflates blows to the rotor, cooling wind and insulation support effect make the cooling wind can flow in box circumference around insulation support's outer wall, have improved the internal heat dissipation of box.
Further, as shown in fig. 17, a bearing is installed at the upper end of the first insulating pull rod 17, the outer diameter of the bearing contacts with the outer surface of the second fixed disk 43, the bearing is arranged on the first insulating pull rod, and the upper end of the slip ring rotor is fixed by a plurality of bearings, so that the model of the bearing can be reduced, the size of the yawing collecting ring is reduced, meanwhile, the gap between the slip ring rotor and the slip ring stator and the box body is increased, the passage of cooling air is ensured, and the heat dissipation effect is improved.
The yaw collecting ring with the yaw collecting ring heat dissipation system has the advantages that under the test conditions that the environmental temperature is 20 ℃, the rated current is 2100A and the test time is 4 hours, the highest temperature rise of the electric brush is about 25K, and the highest temperature rise of the electric brush of the collecting ring without the heat dissipation system structure is about 50K.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a driftage collecting ring cooling system, includes box (1), installs in slip ring stator in box (1) and install in slip ring rotor (4) in the slip ring stator, its characterized in that: the fan also comprises a protective cover (15), a rotor driving piece (16) and a fan (14);
the middle part of the upper end surface of the box body (1) is fixed with the protective cover (15);
the fans (14) are respectively fixed at the lower parts of two opposite side surfaces of the box body (1), and the two fans (14) are positioned at two sides of a center line (120) of the side surfaces in the width direction;
one end of the rotor driving piece (16) is inserted into the protective cover (15) and is connected with the slip ring rotor;
an air flow channel (18) is arranged between the rotor driving piece (16) and the protective cover (15).
2. The yaw slip ring heat dissipation system of claim 1, wherein: the slip ring stator comprises a plurality of first insulating pull rods (17) and a plurality of groups of annular plate assemblies (2) arranged on the first insulating pull rods (17);
the annular plate assemblies (2) are arranged at intervals along the axial direction of the first insulating pull rod (17);
the annular plate component (2) comprises an annular plate (20), a brush component (3), a support (22) and a bus bar (23), wherein the annular plate (20) is provided with a plurality of brush components (3) which can be in contact with a rotor slip ring, and the bus bar (23) is arranged on the annular plate (20) through the support (22) and is connected with the brush components (3).
3. The yaw slip ring heat dissipation system of claim 2, wherein: a plurality of heat dissipation holes (201) are formed in the annular plate (20).
4. The yaw slip ring heat dissipation system of claim 2, wherein: the electric brush assembly (3) comprises a brush box (30), a brush body (31), a compression spring (32), a compression spring pressing plate (33) and a brush braid (34);
install brush box (30) on annular plate (20), be equipped with brush body installation cavity (300) in brush box (30), the one end of brush body (31) be equipped with can with slip ring contact surface (310) of rotor slip ring contact, the other end with brush pigtail (34) fixed connection, brush body (31) are arranged in brush body installation cavity (300) and be equipped with the one end orientation of slip ring contact surface (310) the center of annular plate (20), brush body (31) are fixed with the one end of brush pigtail (34) is equipped with compression spring (32), compression spring clamp plate (33) are fixed make on brush box (30) compression spring (32) one end with brush body (31) butt, the other end with compression spring clamp plate (33) butt.
5. The yaw slip ring heat dissipation system of claim 4, wherein: the end of the brush body (31) provided with the slip ring contact surface (310) is also provided with a first heat dissipation groove (312).
6. The yaw slip ring heat dissipation system of claim 4, wherein: and heat dissipation channels (313) are arranged on the inner side walls of the brush body (31) and the brush body installation cavity (300).
7. The yaw slip ring heat dissipation system of claim 4, wherein: the brush box (30) is also provided with a second heat dissipation groove (302).
8. The yaw slip ring heat dissipation system of claim 1, wherein: the slip ring rotor (4) comprises a central pipe (40), an insulating sleeve (41), a first fixed disc (42), a second fixed disc (43), a plurality of groups of slip ring assemblies (44) and a plurality of second insulating pull rods (45);
the insulating sleeve (41) is sleeved on the central tube (40), the first fixed disc (42) is fixed at the lower end of the central tube (40), the second fixed disc (43) is fixed at the upper end of the central tube (40), one end of the second insulating pull rod (45) is connected with the first fixed disc (42), and the other end of the second insulating pull rod is connected with the second fixed disc (43);
slip ring subassembly (44) include terminal (440) and annular slip ring (441), circumference interval is equipped with a plurality of installation arch (442) protruding to the slip ring center on the inside wall of slip ring (441), terminal (440) are installed on installation arch (442), still be equipped with second pull rod mounting hole (443) on installation arch (442) play, slip ring subassembly (44) cover is in on insulation support (41), just second insulation pull rod (45) pass second pull rod mounting hole (443) and will multiunit slip ring subassembly (44) spaced installation between first fixed disk (42) and second fixed disk (43).
9. The yaw slip ring heat dissipation system of claim 8, wherein: and a bearing (5) is installed at the upper end of the first insulating pull rod (17), and the outer diameter of the bearing (5) is in contact with the outer surface of the second fixed disc (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010136622.2A CN111193355A (en) | 2020-03-02 | 2020-03-02 | Driftage collecting ring cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010136622.2A CN111193355A (en) | 2020-03-02 | 2020-03-02 | Driftage collecting ring cooling system |
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| CN111193355A true CN111193355A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010136622.2A Pending CN111193355A (en) | 2020-03-02 | 2020-03-02 | Driftage collecting ring cooling system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583193A (en) * | 2020-11-25 | 2021-03-30 | 沧州宇航电机电气有限公司 | Yaw collecting ring of wind driven generator |
| WO2023272980A1 (en) * | 2021-06-30 | 2023-01-05 | 北京金风科创风电设备有限公司 | Wind turbine control method, apparatus, and system, device and medium |
| CN117832970A (en) * | 2024-01-19 | 2024-04-05 | 大连宜顺机电有限公司 | High-power rotary conductive device of offshore wind turbine generator |
-
2020
- 2020-03-02 CN CN202010136622.2A patent/CN111193355A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583193A (en) * | 2020-11-25 | 2021-03-30 | 沧州宇航电机电气有限公司 | Yaw collecting ring of wind driven generator |
| CN112583193B (en) * | 2020-11-25 | 2023-07-28 | 沧州宇航电机电气有限公司 | Yaw collecting ring of wind driven generator |
| WO2023272980A1 (en) * | 2021-06-30 | 2023-01-05 | 北京金风科创风电设备有限公司 | Wind turbine control method, apparatus, and system, device and medium |
| CN117832970A (en) * | 2024-01-19 | 2024-04-05 | 大连宜顺机电有限公司 | High-power rotary conductive device of offshore wind turbine generator |
| CN117832970B (en) * | 2024-01-19 | 2024-05-28 | 大连宜顺机电有限公司 | High-power rotary conductive device of offshore wind turbine generator |
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