CN112234404A

CN112234404A - Phase carbon brush assembly of wind turbine generator and using method

Info

Publication number: CN112234404A
Application number: CN202011094244.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Chongqing Yichenxing Industrial Design Co ltd
Current assignee: MERSEN CARBON PRODUCTS (SHANGHAI) CO.,LTD.
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-01-15
Anticipated expiration: 2040-10-14
Also published as: CN112234404B

Abstract

The invention relates to the wind power industry of new clean energy, in particular to a double-fed wind generating set with different powers, in particular to a phase carbon brush assembly of the wind generating set, which comprises a carbon brush body, a sleeve, a transmission unit and a fixing unit, wherein the transmission unit comprises a motor and a driving wheel, the top of the motor is connected with a transmission shaft, the middle part of the driving wheel is provided with a first connecting hole, the transmission shaft penetrates through the first connecting hole to be in transmission connection with the driving wheel, the driving wheel is externally meshed with a transmission wheel which is fixedly connected with the bottom of a rotating shaft, the bottom of the rotating shaft is connected with an installation base through a bolt, the top of the installation base is provided with a second installation hole, an elastic part is installed in the second installation hole, the other end of the elastic part is connected with the carbon brush body, compared with the carbon brush assembly in the prior art, the carbon brush is prevented from, the invention also provides a using method of the phase carbon brush assembly of the wind turbine generator.

Description

Phase carbon brush assembly of wind turbine generator and using method

Technical Field

The invention relates to the technical field of wind power industry of new clean energy, in particular to a phase carbon brush assembly of a wind turbine generator and a using method of the phase carbon brush assembly.

Background

Along with the development of larger units, the application environment is poorer, the requirement is higher, and the difference of seasonal variation is more obvious. The developed wind field goes from inland to plateau and to tidal zone, and goes to offshore and deep blue. Therefore, the carbon brush in the traditional sense cannot meet the requirements of new environment and new technical standards, and the user has higher expectation. Therefore, the novel carbon material is actively developed and developed by means of market demands, the novel carbon material is suitable for the wind turbine generator in high-humidity and high-salt environment, the carbon brush has certain waterproof, moistureproof and salt-tolerant performances, the maintenance of a slip ring and the carbon brush of the wind turbine generator is reduced, the service life of the carbon brush is longer, and the carbon brush is not easy to thermally expand and jam and the like.

In the graphite brush, a carbon protective film is formed on the sliding contact surface by air around the sliding contact portion with the commutator, air existing in pores inside the brush, or the like, and this carbon protective film becomes a factor for suppressing wear and deterioration of the commutation performance, but it is known that the state of formation of the carbon protective film is strongly influenced by the use environment, i.e., temperature and humidity, at the sliding contact portion between the brush and the commutator, and when the atmospheric temperature at the sliding contact portion becomes high, appropriate formation of the carbon protective film is impaired, the sliding contact state between the brush and the commutator deteriorates, the generation of sparks increases, and the durability deteriorates.

Chinese patent publication No. CN201820155720.9 discloses a generator carbon brush capable of reducing carbon brush sparks, which belongs to the technical field of excitation generator equipment and is used for reducing carbon brush sparks. The technical scheme is as follows: the surface of the carbon brush is provided with a plurality of parallel grooves, the grooves are perpendicular to the surface of the carbon brush, the direction of the grooves on the surface is perpendicular to the length direction of the surface, and the grooves divide the surface of the carbon brush into a plurality of grids. After the surface of the carbon brush is provided with the slots, the total contact area of the surface of the carbon brush consists of a plurality of small areas, so that the carbon brush is easy to contact better in operation, and the spark is reduced; if sparks are generated, the sparks are rapidly reduced in the gaps of the adjacent slots, and splashing is not easily generated, so that the spark grade is reduced. This patent simple structure can make the carbon brush spark reduce, has obviously reduced carbon brush spark grade to can reduce carbon brush and sliding ring and generate heat, avoid taking place the scaling loss, guarantee the steady operation of generator, increase the reactive power of generator.

Chinese patent publication No. CN102013609B discloses a sealing carbon brush and methods of manufacturing and using the same. The sealing carbon brush comprises a shell, a cylindrical brush block and an oil seal frame; the brush is characterized in that a guide sleeve is arranged in the shell, one section of the cylindrical brush block penetrates through the shell to reach the inside of the guide sleeve, and the other section of the cylindrical brush block is exposed out of the shell; one end of the guide sleeve is provided with an oil seal frame, the other end of the guide sleeve is provided with a guide sleeve rear cover, and one end of the oil seal frame penetrates through the shell to be in threaded connection with the guide sleeve. The invention has the advantages of simple structure, convenient use, good sealing performance, corrosion resistance and capability of keeping good electrical connection in a seawater splashing and humid environment.

However, the above patents still have the following problems:

1. the carbon brush in the prior art works in an electrified mode, after the carbon brush meets water, the carbon body thermally expands, the brush holder is clamped, the slip ring is ablated, and the spring fails at high temperature;

2. after the carbon brush of the wind turbine generator system meets abnormal conditions, the existing carbon brush factory cannot provide active and effective measures and provide an effective solution, the existing quality problems and potential safety hazards cannot be eliminated, the carbon brush and the slip ring are ablated repeatedly, the operation and power generation of the wind turbine generator system are influenced, and huge economic losses are caused for owners.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the phase carbon brush assembly of the wind turbine generator, which can enhance the strength and the folding strength of the carbon brush body, avoid the electrified sparking of the carbon brush, avoid the overheating expansion of the carbon brush and avoid the situation that the carbon brush is clamped and held, thereby prolonging the service life of the carbon brush. The invention also provides a using method of the phase carbon brush assembly of the wind turbine generator.

The invention provides a carbon brush assembly of a wind turbine generator, which comprises a carbon brush body, a sleeve, a transmission unit and a fixing unit, wherein the sleeve is arranged on the carbon brush body;

the sleeve is provided with an axial hole, the sleeve is arranged on the fixing unit, and the transmission unit is arranged at the bottom of the sleeve;

the transmission unit includes motor and action wheel, the motor top is connected with the transmission shaft, it has first connecting hole to open at the action wheel middle part, the transmission shaft passes this first connecting hole and is connected with the action wheel transmission, the action wheel external toothing has the drive wheel, the bottom fixed connection of drive wheel and pivot, there is the installation base bottom of pivot through bolt connection, it has the second mounting hole to open at installation base top, install the elastic component in the second mounting hole, the other end and the carbon brush body coupling of elastic component.

Preferably, the driving wheel comprises a connecting part and a transmission part which are integrally formed, the first connecting hole is formed in the connecting part, the cross section of the transmission part is fan-shaped, the fan-shaped angle is 45-180 degrees, and the transmission part is meshed with the outside of the driving wheel.

Preferably, the side surfaces of the rotating shaft are two opposite cutting planes and two opposite arc surfaces, a vertical groove in the axial direction is formed in the top of the rotating shaft, first pin holes are formed in two sides of the vertical groove, and the bottom of the mounting base is connected with the first pin holes of the rotating shaft through pins.

Preferably, a protrusion is arranged at the bottom of the mounting base, a second pin hole is formed in the protrusion, the first pin hole and the second pin hole are the same in size, and the pin penetrates through the first pin hole and the second pin hole to connect the mounting base and the rotating shaft.

Preferably, the top of sleeve is opened there is the right angle groove, axial hole through connection in right angle groove and the sleeve, the right angle inslot is equipped with the conduction piece, and this conduction piece and right angle groove swing joint, the carbon brush body is located in the sleeve, just when the carbon brush body is arranged in and is waited operating condition down, the elastic component is in compression state, carbon brush body upper surface with the axial hole top is gapped, when the operating condition was arranged in to the carbon brush body, the elastic component is in natural state, carbon brush body upper surface with the contact of axial hole top.

Preferably, the conduction piece comprises a first conduction part and a second conduction part, the first conduction part is arranged in the right-angle groove, the second conduction part is arranged outside the sleeve, and the second conduction part is connected with the first conduction part through a flexible conduction wire.

Preferably, the surface of conduction one portion, conduction line and conduction two portions all is equipped with the insulating layer, the one end and the conduction line of conduction two portions are connected, open the other end of conduction two portions has the storage tank, be equipped with the lug in the storage tank, and this lug is the conductor, open the side of conduction two portions has the spout, sliding connection has the slider in the spout, the slider is the H type, and this slider one end is installed in the inside top fixed connection with the lug of spout, and the other end of this slider is installed in the spout outside, when the spout top is arranged in to the slider, the storage tank is arranged in completely to the lug, when the slider moves to the spout bottom, lug motion storage tank outside.

Preferably, the fixed unit includes the loading board, the loading board top is equipped with first connecting plate, the sleeve is installed in the loading board top through first connecting plate, the loading board middle part is equipped with the steadying board, the slide rail has been seted up on the loading board of steadying board top, first connecting plate install on the slide rail and rather than sliding connection, be equipped with the stopper on the steadying board, the stopper with sliding connection, the below of loading board is equipped with the second connecting plate, fixedly connected with supporting seat on the second connecting plate, the supporting seat is opened there is the through-hole that runs through, the pivot is passed through the through-hole on this supporting seat and is connected through the bearing rather than.

Preferably, the inner wall of sleeve is equipped with the radiating groove, the radiating groove is contactless with fixed unit, carbon brush body, just the sleeve is opened has a plurality of first mounting holes, fixed unit can dismantle with the sleeve through this first mounting hole and be connected.

The invention also discloses a using method of the phase carbon brush assembly of the wind turbine generator, which comprises the following steps:

s1, installing components, wherein each carbon brush component comprises a carbon brush body, a sleeve, a transmission unit and a fixing unit, the units and the components are sequentially installed, the transmission unit comprises a motor and a driving wheel, the top of the motor is connected with a transmission shaft, the transmission shaft penetrates through the first connecting hole to be in transmission connection with the driving wheel, the driving wheel is externally meshed with the transmission wheel, the transmission wheel is fixedly connected with the bottom of a rotating shaft, the bottom of the rotating shaft is connected with an installation base through a bolt, a second installation hole is formed in the top of the installation base, an elastic piece is installed in the second installation hole, and the other end of the elastic piece is connected with the;

s2, a motor drives a driving wheel to rotate, a driving wheel rotates in the opposite direction to the driving wheel, the driving wheel comprises a connecting part and a transmission part which are integrally formed, when the driving wheel operates, the transmission part of the driving wheel is meshed with the driving wheel, the meshing range of the driving wheel, the transmission part and the driving wheel is 45-180 degrees, a transmission shaft drives the driving wheel to reciprocate in the meshing range, and the rotating shaft moves synchronously with the driving wheel because the driving wheel is arranged at the bottom of the rotating shaft;

s3, a sliding groove is formed in the side face of the second conducting part, a sliding block is connected in the sliding groove in a sliding mode, the position of the lug plate is adjusted through the sliding block, the sliding block is located at the top of the sliding groove when the second conducting part is in an idle state, and when the second conducting part needs to work, the sliding block slides to the bottom of the sliding groove to expose the lug plate, so that external parts are connected;

s4, when the carbon brush body is placed in a standby working state, the elastic piece is in a compressed state, and a gap is reserved between the upper surface of the carbon brush body and the top of the axial hole;

and S5, when the carbon brush body is in a working state, the elastic piece is in a natural state, and the upper surface of the carbon brush body is in contact with the top of the axial hole, so that an electric signal is transmitted through the conducting piece at the top of the sleeve.

Compared with the prior art, the invention has the working principle and the advantages that: the carbon brush body is arranged in an axial hole of the sleeve, the outer part of the sleeve is connected with the fixed unit, the driving wheel is arranged on a transmission shaft of the motor, the driving wheel is externally meshed with the transmission wheel, the driving wheel is driven by the motor to rotate, the transmission wheel and the transmission wheel rotate in opposite directions, the driving wheel comprises a connecting part and a transmission part which are integrally formed, when the driving wheel operates, the transmission part of the driving wheel is meshed with the transmission wheel, the meshing range of the driving wheel, the transmission part and the transmission wheel is 45-180 degrees, the transmission shaft drives the driving wheel to reciprocate in the meshing range, as the transmission wheel is arranged at the bottom of the rotating shaft, the rotating shaft moves synchronously along with the transmission wheel, the top of the rotating shaft is connected with the mounting base through a bolt, the top of the mounting base is connected with the carbon, the elastic piece is in a compression state, the upper surface of the carbon brush body and the top of the axial hole are provided with a gap, when the carbon brush body is arranged in a working state, the elastic piece is in a natural state, the upper surface of the carbon brush body is in contact with the top of the axial hole, the elastic piece returns to the natural state from the compression state when the installation base starts to rotate under the action of the rotating shaft, and in the process, the elastic piece and the carbon brush body synchronously rotate along with the connection base, the carbon brush body enters the working state under rotation, and at the moment, the electric signal is transmitted through the transmission piece at the top of the sleeve.

And the right angle groove is installed at the sleeve top, and a conduction portion is installed in the right angle groove, and this conduction piece and right angle groove swing joint, when the carbon brush body got into operating condition, the elastic component was in natural state, carbon brush body upper surface with the axial hole top contact, the carbon brush body top was ejecting with a conduction portion this moment to can adjust the position of passing to one, conduction two, conveniently be connected with external part.

And the second conduction part is provided with a containing groove, the lug is arranged in the containing groove, the side surface of the second conduction part is provided with a sliding groove, the sliding groove is internally connected with a sliding block in a sliding way, the position of the lug is adjusted through the sliding block, when the lug is in an idle state, the sliding block is positioned at the top of the sliding groove, when the lug needs to work, the sliding block slides to the bottom of the sliding groove to expose the lug, so that external parts are connected, the lug is small in structure, and a metal sheet with a sheet is adopted, so that the lug is easy to damage, and the lug can be protected by adopting the structure, and the.

The fixing unit comprises a bearing plate, a sliding rail is arranged on the bearing plate above the stable plate, the first connecting plate is installed on the sliding rail and is in sliding connection with the sliding rail, a limiting block is arranged on the stable plate, the limiting block is connected with the sliding rail, the distance between the sleeve and the installation base can be adjusted by adjusting the distance between the first connecting plate and the stable plate, the length and the material of the elastic part can be selected more appropriately, and the distance between the first connecting plate and the stable plate can be fixed through the limiting block after the distance between the first connecting plate and the stable plate is determined.

The inner wall of the sleeve is provided with the heat dissipation groove, so that the carbon brush body is prevented from generating heat accumulated in the sleeve to cause the carbon brush to be overheated and expanded in the operation process.

Drawings

FIG. 1 is a perspective view of an embodiment of a carbon brush assembly of a wind turbine generator system according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

FIG. 4 is a side view structural diagram of an embodiment of a phase carbon brush assembly of a wind turbine generator system of the present invention;

FIG. 5 is a front view of a carbon brush assembly of a wind turbine generator according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a rotating shaft and an installation base of an embodiment of a phase carbon brush assembly of a wind turbine generator according to the present invention;

FIG. 7 is a voltage drop variation line graph of a dynamic test of a phase carbon brush assembly of a wind turbine generator system according to the present invention;

FIG. 8 is a friction coefficient variation line graph of a dynamic test of a phase carbon brush assembly of a wind turbine generator system.

Reference numerals referred to in the drawings are: the anti-abrasion device comprises a motor 1, a transmission shaft 101, a driving wheel 2, a connecting part 201, a transmission part 202, a first connecting hole 203, a pressure reducing hole 204, a supporting seat 3, a rotating shaft 4, a transmission wheel 401, a vertical groove 402, a first pin hole 403, a cutting plane 404, an arc surface 405, an installation base 5, a protrusion 501, a second installation hole 502, a sleeve 6, an elastic piece 601, a right-angle groove 602, a push block 603, an anti-abrasion piece 604, a fixing unit 7, a bearing plate 701, a first connecting plate 702, a stabilizing plate 703, a sliding rail 704, a limiting block 705, a second connecting plate 706, a first conducting part 801, a conducting wire 802, a second conducting part 803, a sliding groove 804 and.

Detailed Description

The following is further detailed by the specific embodiments:

the first embodiment is as follows:

as shown in fig. 1 to 6, there is also provided a carbon brush assembly of a group of phase carbon brushes of a wind turbine 1 manufactured by the above method, where the carbon brush assembly includes a carbon brush body, a sleeve 6, a transmission unit and a fixing unit 7;

the sleeve 6 is provided with an axial hole, the sleeve 6 is arranged on the fixing unit 7, and the transmission unit is arranged at the bottom of the sleeve 6;

the transmission unit includes motor 1 and

action wheel

2, 1 top of motor is connected with

transmission shaft

101, 2 middle parts of action wheel are opened there is first connecting hole 203, transmission shaft 101 passes this first connecting hole 203 and is connected with the transmission of

action wheel

2, 2 external meshing of action wheel have drive wheel 401, the bottom fixed connection of drive wheel 401 and pivot 4, there is installation base 5 bottom of pivot 4 through the bolt connection, 5 top parts of installation base have second mounting hole 502, install elastic component 601 in the second mounting hole 502, the other end and the carbon brush body coupling of elastic component 601.

Preferably, the driving wheel 2 comprises a connecting portion 201 and a transmission portion 202 which are integrally formed, the first connecting hole 203 is formed in the connecting portion 201, the cross section of the transmission portion 202 is fan-shaped, the fan-shaped angle is 45-180 degrees, the transmission portion 202 is engaged with the driving wheel 401, and the transmission portion 202 is provided with a pressure reducing hole 204.

Preferably, the side surface of the rotating shaft 4 is provided with two opposite cutting planes 404 and two opposite arc surfaces 405, the top of the rotating shaft 4 is provided with a vertical groove 402 in the axial direction, two sides of the vertical groove 402 are provided with first pin holes 403, and the bottom of the mounting base 5 is connected with the first pin holes 403 of the rotating shaft 4 through pins.

Preferably, a protrusion 501 is disposed at the bottom of the mounting base 5, the protrusion 501 is provided with a second pin hole, the first pin hole 403 and the second pin hole have the same size, and a pin passes through the first pin hole 403 and the second pin hole to connect the mounting base 5 and the rotating shaft 4.

The carbon brush body is arranged in an axial hole of the sleeve 6, the outer part of the sleeve 6 is connected with the fixing unit 7, the driving wheel 2 is arranged on a transmission shaft 101 of the motor 1, the driving wheel 2 is externally meshed with the transmission wheel 401, the driving wheel 2 is driven to rotate by the motor 1, the transmission wheel 401 rotates in the opposite direction, the driving wheel 2 comprises a connecting part 201 and a transmission part 202 which are integrally formed, when the driving wheel 2 operates, the transmission part 202 of the driving wheel 2 is meshed with the transmission wheel 401, the meshing range of the driving wheel 2, the transmission part 202 and the transmission wheel 401 is 45-180 degrees, the transmission shaft 101 drives the driving wheel 2 to reciprocate in the meshing range, as the transmission wheel 401 is arranged at the bottom of the rotating shaft 4, the rotating shaft 4 moves synchronously along with the transmission wheel 401, the top of the rotating shaft 4 is provided with the mounting base 5 through a bolt connection, the carbon brush body is arranged in the sleeve 6, and the elastic piece 601 and the carbon brush body synchronously rotate along with the connecting base.

Example two:

as shown in fig. 1 to 6, a carbon brush assembly of a group of phase carbon brushes of a wind turbine 1 manufactured by the above method includes a carbon brush body, a sleeve 6, a transmission unit and a fixing unit 7;

the transmission unit includes motor 1 and

action wheel

2, 1 top of motor is connected with

transmission shaft

action wheel

Preferably, the driving wheel 2 comprises a connecting portion 201 and a transmission portion 202 which are integrally formed, the first connecting hole 203 is formed in the connecting portion 201, the cross section of the transmission portion 202 is a sector, the sector angle is 45-180 degrees, and the transmission portion 202 is externally engaged with the driving wheel 401.

Preferably, the top of the sleeve 6 is provided with a right-angle groove 602, the right-angle groove 602 is in through connection with an axial hole in the sleeve 6, a conducting piece is arranged in the right-angle groove 602 and movably connected with the right-angle groove 602, the carbon brush body is arranged in the sleeve 6, when the carbon brush body is arranged in a to-be-operated state, the elastic piece 601 is in a compression state, a gap is reserved between the upper surface of the carbon brush body and the top of the axial hole, when the carbon brush body is arranged in the to-be-operated state, the elastic piece 601 is in a natural state, and the upper surface of the carbon brush body is in.

Preferably, the conductive element comprises a first conductive portion 801 and a second conductive portion 803, the first conductive portion 801 is disposed in the right-angle groove 602, the second conductive portion 803 is disposed outside the sleeve 6, and the second conductive portion 803 is connected to the first conductive portion 801 by a flexible conductive wire 802.

Preferably, the outer surfaces of the first conducting portion 801, the second conducting portion 802 and the second conducting portion 803 are all provided with an insulating layer, one end of the second conducting portion 803 is connected with the conducting wire 802, the other end of the second conducting portion 803 is provided with a containing groove, a lug is arranged in the containing groove and is a conductor, the side surface of the second conducting portion 803 is provided with a sliding groove 804, a sliding block 805 is connected in the sliding groove 804 in a sliding manner, the sliding block 805 is H-shaped, one end of the sliding block 805 is installed in the sliding groove 804 and fixedly connected with the top of the lug, the other end of the sliding block 805 is installed outside the sliding groove 804, when the sliding block 805 is placed at the top of the sliding groove 804, the lug is completely placed in the containing groove, and when the sliding block 805.

Preferably, the fixing unit 7 includes a bearing plate 701, a first connecting plate 702 is disposed on the top of the bearing plate 701, the sleeve 6 is mounted above the bearing plate 701 through the first connecting plate 702, a stabilizing plate 703 is disposed in the middle of the bearing plate 701, a sliding rail 704 is disposed on the bearing plate 701 above the stabilizing plate 703, the first connecting plate 702 is mounted on the sliding rail 704 and slidably connected to the sliding rail 704, a limiting block 705 is disposed on the stabilizing plate 703, the limiting block 705 is connected to the sliding rail 704, a second connecting plate 706 is disposed below the bearing plate 701, a supporting seat 3 is fixedly connected to the second connecting plate 706, a through hole is formed in the supporting seat 3, and the rotating shaft 4 penetrates through the through hole in the supporting seat.

Preferably, the inner wall of the sleeve 6 is provided with a heat dissipation groove, the heat dissipation groove is not in contact with the fixing unit 7 and the carbon brush body, the sleeve 6 is provided with a plurality of first mounting holes, and the fixing unit 7 is detachably connected with the sleeve 6 through the first mounting holes.

The advantages of the second embodiment over the first embodiment are: the right-angle groove 602 is installed at the top of the sleeve 6, the first conduction part 801 is installed in the right-angle groove 602, the conduction part is movably connected with the right-angle groove 602, when the carbon brush body enters a working state, the elastic part 601 is in a natural state, the upper surface of the carbon brush body is in contact with the top of the axial hole, the first conduction part 801 is ejected out of the top of the carbon brush body at the moment, and therefore the position of the first conduction part and the position of the second conduction part 803 can be adjusted, and the carbon brush body is conveniently connected with external parts.

The side surface of the right-angle groove 602 of the sleeve 6 is further provided with a push block 603, the push block 603 is installed in the vertical direction of the right-angle groove 602, the push block 603 is connected with the first conducting part 801, and the first conducting part 801 can be pushed out upwards by the push block 603.

And the second conducting part 803 is provided with a containing groove, the lug plate is arranged in the containing groove, the side surface of the second conducting part 803 is provided with a sliding groove 804, the flowers and the grass are internally and slidably connected with a sliding block 805, the position of the lug plate is adjusted through the sliding block 805, when the second conducting part is in an idle state, the sliding block 805 is positioned at the top of the sliding groove 804, when the second conducting part needs to work, the sliding block 805 slides to the bottom of the sliding groove 804 to expose the lug plate, so that external parts are connected, because the structure of the lug plate is small, and a thin metal sheet is adopted, the lug plate is easy to damage, and the lug plate can be.

The fixing unit 7 comprises a bearing plate 701, a sliding rail 704 is arranged on the bearing plate 701 above a stabilizing plate 703, a first connecting plate 702 is installed on the sliding rail 704 and is in sliding connection with the sliding rail, a limiting block 705 is arranged on the stabilizing plate 703, the limiting block 705 is connected with the sliding rail 704, the distance between the sleeve 6 and the installation base 5 can be adjusted by adjusting the distance between the first connecting plate 702 and the stabilizing plate 703, so that the length of the selected elastic part 601 is met, the length and the material of the more proper elastic part 601 are selected, and the distance between the first connecting plate 702 and the stabilizing plate 703 is fixed through the limiting block 705 after the distance between the first connecting plate 702 and the stabilizing plate 703 is determined.

The inner wall of the sleeve 6 is provided with a heat dissipation groove, so that the carbon brush is prevented from being overheated and expanded due to the accumulation of generated heat in the sleeve 6 in the operation process of the carbon brush body.

S1, assembly installation, wherein the carbon brush assembly comprises a carbon brush body, a sleeve 6, a transmission unit and a fixing unit, each unit and each assembly are sequentially installed, the transmission unit comprises a motor 1 and a driving wheel 2, the top of the motor 1 is connected with a transmission shaft 101, the transmission shaft 101 penetrates through the first connecting hole 203 to be in transmission connection with the driving wheel 2, the driving wheel 2 is externally meshed with a transmission wheel 401, the transmission wheel 401 is fixedly connected with the bottom of a rotating shaft 4, the bottom of the rotating shaft 4 is connected with an installation base 5 through a bolt, the top of the installation base 5 is provided with a second installation hole 502, an elastic piece 601 is installed in the second installation hole 502, and the other end of the elastic piece 601 is connected with the;

s2, a motor 1 drives a driving wheel 2 to rotate, a driving wheel 401 rotates in the opposite direction, the driving wheel 2 comprises a connecting part 201 and a transmission part 202 which are integrally formed, when the driving wheel 2 operates, the transmission part 202 of the driving wheel 2 is meshed with the driving wheel 401, the meshing range of the driving wheel 2, the transmission part 202 and the driving wheel 401 is 45-180 degrees, a transmission shaft 101 drives the driving wheel 2 to reciprocate in the meshing range, and the rotating shaft 4 moves synchronously along with the driving wheel 401 as the driving wheel 401 is installed at the bottom of the rotating shaft 4;

s3, a sliding groove 804 is formed in the side face of the conducting second portion 803, a sliding block 805 is connected in the sliding groove 804 in a sliding mode, the position of the lug is adjusted through the sliding block 805, when the conducting second portion is in an idle state, the sliding block 805 is located at the top of the sliding groove 804, when the conducting second portion needs to work, the sliding block 805 slides to the bottom of the sliding groove 804, the lug is exposed, and therefore external parts are connected;

s4, when the carbon brush body is in a standby state, the elastic member 601 is in a compressed state, and a gap is formed between the upper surface of the carbon brush body and the top of the axial hole;

s5, when the carbon brush body is in the working state, the elastic member 601 is in the natural state, and the upper surface of the carbon brush body contacts with the top of the axial hole, so that the electrical signal is transmitted through the conductive member at the top of the sleeve 6.

The manufacturing method of the phase carbon brush of the wind turbine generator comprises the following steps:

s1, preparing materials, wherein the carbon brush body comprises a functional layer and at least one protective layer, the functional layer comprises a carbon substrate, the carbon substrate comprises carbon graphite, tin powder, lead powder, copper powder and an asphalt binder, according to the weight ratio, the carbon graphite accounts for 35% -40% of each carbon substrate, the tin powder accounts for 0.3% -0.5%, the lead powder accounts for 6% -8%, the copper powder accounts for 45% -50%, the asphalt binder accounts for 3% -5%, the protective layer is saponification liquid, the saponification liquid comprises aluminum soap and black machine oil, and the proportion of the aluminum soap to the black machine oil is 1: 9;

s2, uniformly mixing the powder materials required by the carbon substrate, carrying out molding treatment, heating the molded carbon substrate, and carrying out graphitization treatment on the heated carbon substrate to obtain a carbon rod;

s3, heating and decocting the aluminum soap and the black engine oil of the needed saponification liquid to obtain a liquid A, adding gasoline into the liquid A to dilute the liquid A to obtain a liquid B, wherein the ratio of the liquid A to the gasoline is 1: and 1, placing the carbon rod in the liquid B for dipping treatment to obtain a product C, and placing the product C in a drying oven at 200 ℃ for evaporation to obtain the carbon brush body.

The wind turbine generator is arranged in different wind power plants from the north in extremely cold weather to the south in high temperature and humidity, from the inland with stable humidity to the environment with deep blue and high salt content, from the plain to the plateau with dry air and thin oxygen, and repeatedly and alternately changed in four seasons, the carbon brush of the wind turbine generator obtained by the manufacturing method can avoid the repeated occurrence of the ablation of the carbon brush and a slip ring, thereby avoiding the influence on the operation of the wind turbine generator and reducing the attack loss, and the material of the carbon matrix is added with the tin powder, the lead powder, the copper powder and the asphalt adhesive, thereby improving the strength, the breaking strength, the smoothness, the wear resistance and the conductivity of the surface of the carbon brush, external current is added to a rotating rotor through the carbon brush, static charge on a main shaft is led to the ground through the carbon brush, and the carbon bar in the manufacturing process is subjected to dipping treatment, and a protective layer is added on the carbon bar, the protective layer is similar to the protective layer attached to the carbon rod, and water and salt are prevented from directly contacting with the carbon rod, so that the direct chemical reaction of the carbon brush in contact with the water and the salt when the wind turbine generator operates is avoided, the carbon brush is electrified to strike fire, the carbon brush is overheated to expand, and the situation that the carbon brush is clamped and held by the brush is avoided.

In the research and development process, the carbon brush body obtained by the manufacturing method is subjected to dynamic tests, and the following relevant data are obtained: (1) the relevant physicochemical characteristics of the two carbon brushes are shown in fig. 7 and 8,

in the dynamic test process, direct chemical reaction between the carbon brush and water and salt does not occur, so that the carbon brush is ignited with electricity, and the carbon brush is expanded due to overheating, and the condition that the carbon brush is jammed in a brush holder is avoided, so that when the thickness of the oxide film on the surface of the carbon brush body obtained by the manufacturing method is 2 micrometers, when the load current is 5A/cm2, the voltage drop of the two carbon brushes is below 0.5V. When the carbon brushes carry current of 15A/cm2, the voltage drop of the two carbon brushes is below 1.0V, the linear speed between the two carbon brushes is 40m/s, the friction coefficient of the two carbon brushes is less changed under the operation of 25A/cm2, and the friction coefficient is not more than 0.15 when the carbon brushes carry current of 40A/cm2 (as shown in figures 7 and 8).

And after the oxide film formed on the surface of the carbon brush body is subjected to film stripping treatment, a new oxide film is formed, the thickness of the new oxide film can reach 3 mu m, so that the service life of the carbon brush body is prolonged, and when the bearing current is 5A/cm2, the voltage drop of the two carbon brushes is below 0.4V. When the carbon brushes bear the current of 15A/cm2, the voltage drop of the two carbon brushes is below 0.8V, the linear speed between the two carbon brushes is 40m/s, the friction coefficient of the two carbon brushes is slightly changed under the working condition of 25A/cm2, and the friction coefficient is not more than 0.10 when the carbon brushes bear the current of 40A/cm 2.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. Wind turbine generator system looks carbon brush subassembly, its characterized in that: the carbon brush comprises a carbon brush body, a sleeve, a transmission unit and a fixing unit;

2. The carbon brush assembly for the wind turbine generator system according to claim 1, wherein: the driving wheel comprises a connecting part and a transmission part which are integrally formed, the first connecting hole is formed in the connecting part, the cross section of the transmission part is fan-shaped, the fan-shaped angle is 45-180 degrees, and the transmission part is meshed with the driving wheel.

3. The carbon brush assembly for the wind turbine generator system according to claim 2, wherein: the side face of the rotating shaft is provided with two opposite cutting planes and two opposite cambered surfaces, the top of the rotating shaft is provided with a vertical groove in the axial direction, two sides of the vertical groove are provided with first pin holes, and the bottom of the mounting base is connected with the first pin holes of the rotating shaft through pins.

4. The assembly of claim 3, wherein: the bottom of the mounting base is provided with a bulge, the bulge is provided with a second pin hole, the first pin hole and the second pin hole are the same in size, and the pin penetrates through the first pin hole and the second pin hole to connect the mounting base and the rotating shaft.

5. The carbon brush assembly for the wind turbine generator system according to claim 4, wherein: the telescopic top is opened there is the right angle groove, axial hole through connection in right angle groove and the sleeve, the right angle inslot is equipped with the conduction piece, and this conduction piece and right angle groove swing joint, the carbon brush body is located in the sleeve, just when treating operating condition is arranged in to the carbon brush body, the elastic component is in compression state, carbon brush body upper surface with the axial hole top is gapped, when operating condition is arranged in to the carbon brush body, the elastic component is in natural state, carbon brush body upper surface with the contact of axial hole top.

6. The carbon brush assembly for the wind turbine generator system according to claim 5, wherein: the conduction piece comprises a first conduction part and a second conduction part, the first conduction part is arranged in the right-angle groove, the second conduction part is arranged outside the sleeve, and the second conduction part is connected with the first conduction part through a flexible conduction wire.

7. The carbon brush assembly for the wind turbine generator system according to claim 6, wherein: the surface of conduction one portion, conduction line and conduction two portions all is equipped with the insulating layer, the one end and the conduction line of conduction two portions are connected, open the other end of conduction two portions has the storage tank, be equipped with the lug in the storage tank, and this lug is the conductor, open the side of conduction two portions has the spout, sliding connection has the slider in the spout, the slider is the H type, and this slider one end is installed in the inside top fixed connection with the lug of spout, and the other end of this slider is installed in the spout outside, when the spout top is arranged in to the slider, the storage tank is arranged in completely to the lug, when the slider moves to the spout bottom, the lug moves to the storage tank outside.

8. The assembly of claim 7, wherein: the fixed unit comprises a bearing plate, a first connecting plate is arranged at the top of the bearing plate, the sleeve is arranged above the bearing plate through the first connecting plate, a stable plate is arranged in the middle of the bearing plate, a slide rail is arranged on the bearing plate above the stable plate, the first connecting plate is arranged on the slide rail and is in sliding connection with the slide rail, a limiting block is arranged on the stable plate, the limiting block is connected with the slide rail, a second connecting plate is arranged below the bearing plate, a supporting seat is fixedly connected onto the second connecting plate, a through hole is formed in the supporting seat, and the rotating shaft penetrates through the through hole in the supporting seat and is connected with the through hole through a bearing.

9. The assembly of claim 8, wherein: the inner wall of the sleeve is provided with a heat dissipation groove, the heat dissipation groove is not in contact with the fixed unit and the carbon brush body, the sleeve is provided with a plurality of first mounting holes, and the fixed unit is detachably connected with the sleeve carbon brush assembly through the first mounting holes and comprises a carbon brush body, a sleeve, a transmission unit and a fixed unit.

10. The use method of the carbon brush assembly of the wind turbine generator system phase as claimed in claim 9, characterized in that: the method comprises the following steps: