CN211321034U - Annular stator structure of yawing collecting ring - Google Patents

Abstract

The utility model discloses a yawing collecting ring annular stator structure, which comprises a first mounting plate and a second mounting plate which are arranged oppositely; a plurality of insulated tie rods for connecting the first and second mounting plates; the plurality of annular plate assemblies are arranged between the first mounting plate and the second mounting plate, the plurality of annular plate assemblies are arranged on the insulating pull rod, a first insulator is arranged between the first mounting plate and the adjacent annular plate assembly, a second insulator is arranged between the two adjacent annular plate assemblies, and a third insulator is arranged between the second mounting plate and the adjacent annular plate assembly; 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 is connected with the brush assembly. The collecting ring stator structure has the advantages of simple structure, convenience in installation and maintenance, capability of meeting the transmission of large current, small resistance between the stator and the rotor and power consumption reduction.

Description

Annular stator structure of yawing collecting ring

Technical Field

The utility model relates to a wind power generation technical field, concretely relates to collecting ring annular stator structure drifts.

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 a wind turbine generator, and in order to solve the problem that a power cable is seriously abraded due to the yaw guide of a cabin, a yaw collecting ring is gradually favored by users. Like traditional collecting ring, driftage collecting ring mainly includes stator and rotor structure, and the brush subassembly is arranged to the stator, and the more that the brush of same specification was arranged, then the conductivity is stronger. Along with wind turbine generator system power is bigger and bigger, and the electric current of transmission is higher and higher, so need utility model a satisfy collecting ring stator structure of heavy current.

SUMMERY OF THE UTILITY MODEL

The utility model provides a collecting ring annular stator structure drifts to solve the unable requirement that satisfies the transmission of heavy current of current collecting ring.

The utility model discloses a technical means as follows:

a yawing collecting ring annular stator structure comprises a first mounting plate and a second mounting plate which are oppositely arranged; a plurality of insulated tie rods for connecting the first mounting plate and the second mounting plate; the plurality of annular plate assemblies are arranged between the first mounting plate and the second mounting plate and are mounted on the insulating pull rod, a first insulator is arranged between the first mounting plate and the adjacent annular plate assembly, a second insulator is arranged between the two adjacent annular plate assemblies, and a third insulator is arranged between the second mounting plate and the adjacent annular plate assembly; 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.

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, be equipped with the constant head tank of radial setting on the annular plate, be equipped with on the brush box can with constant head tank complex location is protruding, the brush box is installed when on the annular plate, the location is protruding to be arranged in the constant head tank.

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, still be equipped with the temperature sensor mounting groove on the upside inner wall of brush body installation cavity.

Furthermore, a plurality of heat dissipation holes are formed in the annular plate.

Further, the first insulator, the second insulator and the third insulator are sleeved on the insulating pull rod.

Compared with the prior art, driftage collecting ring annular stator structure, owing to be equipped with annular plate subassembly, a plurality of brush subassemblies can be installed to every annular plate subassembly in circumference, the brush subassembly is connected with the busbar, can realize the transmission of heavy current, in order to satisfy wind turbine generator system's current transmission, compact structure has simultaneously, it is convenient to maintain, fix a position with the insulator between a plurality of annular plates, insulating pull rod adopts bonding insulation support's mode to insulate, guarantee the insulating properties between the annular plate, and simultaneously, because multiunit brush contacts with the rotor sliding ring simultaneously, the electric current that passes through on the single brush subassembly has been reduced, and then the heat of its work production of reduction, the loss of energy has been reduced.

Drawings

Fig. 1 is a structural diagram of a yawing collecting ring annular stator structure according to embodiment 1 of the invention;

FIG. 2 is a block diagram of an annular plate assembly;

FIG. 3 is a block diagram of a brush assembly;

FIG. 4 is a disassembled structural view of the brush assembly;

FIG. 5 is a block diagram of a brush box;

FIG. 6 is a block diagram of the brush body and braid assembled together;

FIG. 7 is an assembly view of the brush body and brush box;

FIG. 8 is an axial view of FIG. 7;

fig. 9 is a structural view of the annular plate.

In the figure: 10. the electric brush comprises a first mounting plate, 11, a second mounting plate, 12, an insulating pull rod, 13, a first insulator, 14, a second insulator, 15, a third insulator, 2, a ring plate component, 20, a ring plate, 200, a positioning groove, 201, a heat dissipation hole, 22, a support, 23, a bus bar, 230, an output terminal of the bus bar, 3, an electric brush component, 30, a brush box, 300, a brush body mounting cavity, 301, a positioning bulge, 302, a second heat dissipation groove, 303, a temperature sensor mounting groove, 304, a fixing lug, 305, a threaded hole, 31, a brush body, 310, a slip ring contact surface, 311, a groove, 32, a compression spring, 33, a compression spring pressing plate, 330, a cylindrical bulge, 34, a brush braid, 35 and a bolt.

Detailed Description

Fig. 1 and fig. 2 show a yawing slip ring-shaped stator structure disclosed in the present invention, which includes a first mounting plate 10 and a second mounting plate 11 disposed opposite to each other; a plurality of insulating pull rods 12 are arranged between the first mounting plate 10 and the second mounting plate 11, the number of the insulating pull rods 12 is 3, threads are arranged at two ends of each insulating pull rod 12, insulating sleeves are bonded on the insulating pull rods 12, and two ends of each insulating pull rod 12 can be fixedly connected with the mounting plates at two ends through nuts.

A plurality of annular plate assemblies 2 are mounted between the first mounting plate 10 and the second mounting plate 11, specifically, as shown in fig. 2, each annular plate assembly 2 includes an annular plate 20, a brush assembly 3, a bracket 22 and a bus bar 23, a plurality of mounting holes 202 are formed in the annular plate 20, the number of the mounting holes is the same as that of the insulating pull rods 12, the insulating pull rods 12 pass through the mounting holes 202, insulators for separation are sleeved on the insulating pull rods 12, specifically, a first insulator 13 is arranged between the first mounting plate 10 and the adjacent annular plate 20, a second insulator 14 is arranged between the two adjacent annular plates 20, a third insulator 15 is arranged between the second mounting plate 11 and the adjacent annular plate 20, the first insulator, the second insulator and the third insulator have the same structure, the insulators are made of insulating material, and a through hole through which the insulating pull rod can pass is formed in the center of the insulators, the insulator both ends are equipped with can with the mounting hole 202 complex tang on the annular plate 20, the insulator cover on insulating pull rod and through the tang at both ends and the mounting hole cooperation on the annular plate with the spaced setting of a plurality of annular plate subassemblies between first mounting panel and second mounting panel.

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. 3 and 4, brush assembly 3 includes brush box 30, brush body 31, compression spring 32, compression spring pressing plate 33, and shunt 34; the brush box 30 is mounted on the annular plate 20, in this embodiment, as shown in fig. 5, 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. 6, 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, make compression spring 32 one end with brush body 31 butt, the other end with compression spring clamp plate 33 butt, in this embodiment, be equipped with recess 311 on the brush body 31, be equipped with cylindrical protrusion 330 on the compression spring clamp plate 33, compression spring 32's one end is arranged in recess 311, other pot head is on cylindrical protrusion 330, and compression spring 32 can promote brush body 31 and make sliding ring contact surface and rotor sliding ring in close contact with in order to reduce the resistance between the brush body and the rotor sliding ring, the utility model discloses in the compression spring clamp plate adopts nylon PA66 insulating material, and compression spring is cylindrical helical spring, and the brush box material adopts cast aluminium material. 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 utility model discloses a collecting ring stator structure is owing to be equipped with the annular slab, can be provided with a plurality of brush subassemblies simultaneously on the annular slab, has strengthened transmission current's ability, simultaneously, because a plurality of brush subassemblies carry out current transmission for compare with current collecting ring, when transmitting the same electric power, the electric current that flows through on every brush subassembly reduces, and then has reduced the consumption that produces on every brush subassembly, has reduced thermal production.

The utility model discloses an electric brush subassembly has following advantage for current electric brush subassembly: 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.

And the utility model discloses a stator structure mainly used low-speed rotatory driftage collecting ring, because the rotational speed of the rotor of driftage collecting ring is synchronous with the cabin rotational speed, the rotational speed of cabin is very low (about 0.1r/min), brush conducting structure compares with the brush conducting structure of the collecting ring of high-speed rotation, because the rotational speed is low, hardly through the anchor ring friction of high-speed rotation with the oxidation film control between brush and the sliding ring in stable scope, lead to the contact resistance of brush and sliding ring to rise gradually. 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. The utility model discloses in, the brush subassembly is including brush box, the brush body, compression spring clamp plate and brush pigtail, adopts compression spring can provide great elasticity on the basis of the volume that does not increase the brush subassembly for the brush body can with rotor sliding ring in close contact with, it is less to guarantee the resistance value between the brush body and the rotor sliding ring (the brush body can lead to resistance increase with rotor sliding ring contact failure), and then has reduced the consumption, has reduced thermal production. 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.

The utility model discloses an equipment process of driftage collecting ring annular stator structure as follows: installing a plurality of third insulators in a groove of a second mounting plate (a mounting plate at the lower side), namely inserting male rabbets of the third insulators into female rabbets of the second mounting plate, aligning a plurality of mounting holes on a ring plate in a ring plate assembly at the lowest end with the third insulators, installing the ring plate assembly and the third insulators through the mounting holes and the rabbets at the upper end of the third insulators, then inserting a plurality of insulating pull rods into the mounting holes of the ring plate assembly and the third insulators and penetrating through the second mounting plate, fixing the lower end of an insulating pull rod with the second mounting plate by adopting nuts, then sleeving the second insulators on the insulating pull rods and installing the second insulators in the mounting holes of the ring plate assembly at the lower side, then sleeving another ring plate assembly into the insulating pull rods and aligning and installing with the second insulators, and sleeving a plurality of groups of second insulators and ring plate assemblies on the insulating pull rods in the mode, then a plurality of first insulation subshells are on insulating pull rod and with first mounting panel suit on a plurality of insulating pull rods, and fixed with a plurality of insulating pull rods and last mounting panel with the nut.

Further, as shown in fig. 9, 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.

Further, as shown in fig. 5, 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. 7 and 8, in a second embodiment of the brush body, the end of the brush body 31, which is provided with the slip ring contact surface 310, is further provided with a first heat dissipation groove 312, 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 provided 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 therefore heat dissipation of the electric brush assembly is further facilitated.

Further, a temperature sensor mounting groove 303 is further formed on the upper inner wall of the brush body mounting cavity 300, and specifically, a groove is formed on the inner side of the upper box wall of the brush box, and a temperature sensor can be mounted in the groove so as to collect and detect the temperature of the brush.

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 a cooling fan of the yawing slip ring can pass through the heat dissipation holes, so that the heat dissipation effect of the yawing slip ring is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (9)

1. The utility model provides a driftage collecting ring annular stator structure which characterized in that: comprises a first mounting plate (10) and a second mounting plate (11) which are oppositely arranged;

a plurality of insulating tie rods (12) for connecting the first mounting plate (10) and the second mounting plate (11);

a plurality of annular plate assemblies (2) arranged between the first mounting plate (10) and the second mounting plate (11), wherein the plurality of annular plate assemblies (2) are mounted on the insulating pull rod (12), a first insulator (13) is arranged between the first mounting plate (10) and the adjacent annular plate assembly (2), a second insulator (14) is arranged between the two adjacent annular plate assemblies (2), and a third insulator (15) is arranged between the second mounting plate (11) and the adjacent annular plate assembly (2);

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).

2. The yaw slip ring stator structure of claim 1, 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.

3. The yaw slip ring stator structure of claim 2, wherein: be equipped with radial constant head tank (200) that sets up on annular plate (20), be equipped with on brush box (30) can with constant head tank (200) complex location is protruding (301), brush box (30) are installed when annular plate (20) is last, protruding (301) of location are arranged in constant head tank (200).

4. The yaw slip ring stator structure of claim 2, 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).

5. The yaw slip ring stator structure of claim 2, 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).

6. The yaw slip ring stator structure of claim 2, wherein: the brush box (30) is also provided with a second heat dissipation groove (302).

7. The yaw slip ring stator structure of claim 2, wherein: and a temperature sensor mounting groove (303) is also formed in the inner wall of the upper side of the brush body mounting cavity (300).

8. The yaw slip ring stator structure of claim 1, wherein: the annular plate (20) is also provided with a plurality of heat dissipation holes (201).

9. The yaw slip ring stator structure of claim 1, wherein: the first insulator (13), the second insulator (14) and the third insulator (15) are sleeved on the insulating pull rod (12).

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