CN108869201A - Lightning protection device and wind generating set - Google Patents
Lightning protection device and wind generating set Download PDFInfo
- Publication number
- CN108869201A CN108869201A CN201810697043.8A CN201810697043A CN108869201A CN 108869201 A CN108869201 A CN 108869201A CN 201810697043 A CN201810697043 A CN 201810697043A CN 108869201 A CN108869201 A CN 108869201A
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- China
- Prior art keywords
- lightning protection
- protection device
- slip ring
- shaft
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009413 insulation Methods 0.000 claims description 65
- 239000004020 conductor Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 15
- 239000003381 stabilizer Substances 0.000 claims description 15
- 244000144985 peep Species 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 6
- 238000009738 saturating Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011796 hollow space material Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000013500 performance material Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/30—Lightning protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The utility model provides a lightning protection device and wind generating set, this lightning protection device includes: fixing a shaft; the rotating shaft is rotatably arranged on the outer side of the fixed shaft relative to the fixed shaft, and the first end of the rotating shaft is used for being electrically connected with the lightning protection downlead; the shell is arranged on the outer side of the rotating shaft, and a brush holder with a radial hole is arranged on the side wall of the shell; and a brush inserted into the brush holder in a radial direction and contacting an outer surface of the rotating shaft. The lightning protection device is used for protecting a main bearing in a main shaft system from being burnt by lightning current, and the electric brush is radially arranged in the brush holder of the shell so as to be convenient for replacing the electric brush, so that the structure of the lightning protection device is simplified, and the miniaturization and low cost of the lightning protection device are realized.
Description
Technical field
The present invention relates to thunder and lightning safety-security areas, specifically, the present invention relates to a kind of lightning protection device and having the lightning protection
The wind power generating set of device.
Background technique
It is tall and slender structure in the pylon of wind power generation field, wind power generating set, is easily struck by lightning, in order to avoid wind-force
Generating set is destroyed by thunder and lightning, arrester is installed on blade, and install by the inside of the base bearing in wind power generating set
Lightning protection device is released lightning current with establishing current channel inside base bearing, and lightning protection device and ground line connect, thus by thunder and lightning
Conductance enters the earth.
In the prior art, lightning protection device generallys use the brush being fixed on the inside of lightning protection device and releases to lightning current,
Brush is needed to be replaced frequently as component easy to wear, during dismantling brush assembly of electric, needs to dismantle on the outside of lightning protection device
Component, this can destroy the integrality of lightning protection device, also, frequently carry out disassembly to lightning protection device and will increase the loss of component, drop
The service life of low lightning protection device.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of lightning protection device and wind power generating set, the lightning protection devices
Brush is diametrically mounted in the brush carrier of shell to simplify the structure of lightning protection device in order to replace brush, realizes lightning protection
The miniaturization and low cost of device.
According to an aspect of the present invention, a kind of lightning protection device is provided, which includes：Dead axle；Shaft, shaft phase
The outside of dead axle is installed in rotation on for dead axle, the first end of shaft with lightning protection downlead for being electrically connected；Shell, shell
It is mounted on the outside of shaft, the brush carrier of radial aperture is provided on the side wall of shell；Brush is radially inserted into brush carrier,
And the appearance face contact with shaft.
Preferably, lightning protection device further includes slip ring, and slip ring includes rotating part and stationary part, the rotating part of slip ring with
Shaft is fixedly connected, and the stationary part of slip ring is fixedly connected with the first end of dead axle.
Preferably, the first end of dead axle is connected by the stationary part of the first connecting elements and slip ring, the first connecting elements
Including slip ring stabilizer blade and shift fork, slip ring stabilizer blade is fixedly connected with the stationary part of slip ring, and the first end of shift fork and dead axle is fixed to be connected
Connect, protrusion be formed on slip ring stabilizer blade, forms card slot on shift fork, by engaging protrusion with card slot so that slip ring stabilizer blade and dial
It pitches relatively fixed.
Preferably, lightning protection device further includes tooth shaped component and brush downlead, and tooth shaped component is arranged on the side wall of shell,
One end of tooth shaped component is tooth form end and faces shaft radially to form discharging gap, and brush downlead is by brush and tooth
The electrical connection of shape component, the other end of tooth shaped component with down conductor for being electrically connected.
Preferably, lightning protection device further includes insulation sleeve and sliding bearing, and insulation sleeve is set in the outside of dead axle, sliding bearing
It is set in the outside of insulation sleeve, dead axle, insulation sleeve and sliding bearing are fixed to each other；Shell is fixed on insulation sleeve, and exhausted
Hollow confined space is formed between edge set, the above-mentioned side wall of shell and the outer surface of shaft, brush carrier is connected to the confined space.
Preferably, the peep hole and discharge orifice for penetrating the above-mentioned side wall of shell are respectively formed on shell, wherein peep hole
By the component sealing formed by transparent material, discharge orifice is sealed by sealing-plug.
Preferably, lightning protection device further includes slip ring support, and slip ring support is fixedly connected with rotating part, and shaft passes through second
Connecting elements is fixedly connected with the rotating part of slip ring, and the second connecting elements includes attachment beam, mounting plate and insulation board, attachment beam
One end be connected in slip ring support, mounting plate is fixed on the other end of attachment beam, and insulation board is fixed on a mounting board, and shaft connects
It is connected to insulation board.
Preferably, dead axle has axially extending bore, for accommodating signal cable, in the first end phase with dead axle of slip ring stabilizer blade
Corresponding position is formed with the through-hole for allowing the signal cable to pass through.
According to another aspect of the present invention, a kind of wind power generating set is provided, which includes as described above
Lightning protection device, which is mounted on the main shaft system of wind power generating set.
According to another aspect of the present invention, a kind of wind power generating set is provided, which includes as described above
Lightning protection device, which is mounted on the main shaft system of wind power generating set, and the main shaft system of wind power generating set includes：Gu
The inside of fixing axle is arranged in by base bearing in relative rotation for dead axle, base bearing and rotation axis, rotation axis, and the lightning protection device is logical
Cross dead axle support and slip ring support be mounted on the axis of main shaft system, the direction of routing of lightning protection downlead and down conductor with wear
The direction of routing for crossing the signal cable of dead axle is vertical.In conclusion the lightning protection device in the embodiment of the present invention mainly optimizes outside
The design of shell makes lightning protection device have more compact structure and better lightning protection effect.Brush is radially contacted with shaft, and
The surface of the contact jaw of brush is curved surfaces, is effectively increased the contact area of the two, is conducive to improve lightning protection device
Lightning protection effect, also, brush is directly inserted into the brush carrier on shell, is easily installed and replaces brush, it is therefore prevented that because frequently
Disassembly leads to the damage of main component；In addition, lightning current is along on rotation axis transmitted inwards to lightning protection device, then from lightning protection device
On along down conductor be connected to ground release, the circulation path of lightning current is without base bearing, it is therefore prevented that base bearing by
Thunder and lightning is burnt.
Detailed description of the invention
By the description below in conjunction with attached drawing to embodiment, above and other purpose of the invention and feature will become more
Add it is clear, wherein：
Fig. 1 is the dress of the lightning protection device for showing an exemplary embodiment of the present invention and the main shaft system of wind power generating set
Schematic diagram with relationship；
Fig. 2 is the stereoscopic schematic diagram of the lightning protection device of an exemplary embodiment of the present invention；
Fig. 3 is the decomposition diagram of the lightning protection device of an exemplary embodiment of the present invention；
Fig. 4 is the side view of the lightning protection device of an exemplary embodiment of the present invention；
Fig. 5 is the cross-sectional view that the structure edge in the regional area A according to the lightning protection device of Fig. 4 axially intercepts；
Fig. 6 is the decomposition diagram of the members of lightning protection device according to fig. 2；
Fig. 7 is the cross-sectional view that B-B is intercepted along the lightning protection device according to Fig. 4.
Drawing reference numeral explanation：
100：Lightning protection device；201：Fixing axle；202：Base bearing；203：Rotation axis；300：Engine room foundation；401：Lightning protection is drawn
It is offline；402：Down conductor；1：Dead axle support；2：Slip ring support；3：Slip ring；3a：Rotating part；3b：Stationary part；4：It is fixed
Axis；4a：First end；4b：Second end；4c：Location hole；5：Shaft；5a：First end；5b：Second end；5c：Engaging lug；6：Shell；
6a：First end；6b：Second end；6c：Brush carrier；6d：Tooth shaped component；6e：Peep hole；6f：Discharge orifice；7：Brush；7a：Brush draws
It is offline；8：First connecting elements；8a：Slip ring stabilizer blade；8b：Shift fork；9：Insulation sleeve；9a：Location hole；10：Sliding bearing；11：It is close
Seal；12：Second connecting elements；12a：Attachment beam；12b：Mounting plate；12c：Insulation board.
Specific embodiment
The present invention provides a kind of lightning protection device, which is mainly arranged in the cabin of wind power generating set,
Such as be mounted on the main shaft system of wind power generating set, to protect the base bearing in main shaft system not burnt by lightning current.This is anti-
Thunder device by directly by brush grafting into make in the brush carrier of shell the lightning protection device have be easily installed and replace brush and
Compact-sized advantage.
Detailed description of the present invention embodiment that hereinafter reference will be made to the drawings.However, the present invention can be with many different forms
Implement, and should not be construed as being limited to embodiment set forth herein.
Referring to Fig.1, the main shaft system of the wind power generating set provided in the embodiment of the present invention includes：Fixing axle 201, base bearing
202 and rotation axis 203.Fixing axle 201 can be fixed on engine room foundation 300 to keep relative static conditions, and rotation axis 203 passes through
Base bearing 202 is set in the inside of fixing axle 201, and can rotate relative to fixing axle 201.
Lightning protection device 100 according to an embodiment of the present invention is mountable on main shaft system, it is preferable that according to embodiments of the present invention
The main shaft system that is mounted on wind power generating set of lightning protection device 100 axis on.
1 support lightning protection device 100 of dead axle support, lightning protection device can be passed through on the engine room foundation 300 of wind power generating set
By 2 connection of slip ring support between 100 and rotation axis 203, rotation axis 203 is allow to drive lightning protection device by slip ring support 2
Partial component rotation in 100.
Hereinafter, the specific structure of lightning protection device 100 is described in detail with reference to the accompanying drawings.
Referring to Fig. 2 and Fig. 3, the lightning protection device 100 of an exemplary embodiment of the present invention may include slip ring 3, dead axle
4, shaft 5, shell 6 and brush 7.
Shaft 5 is installed in rotation on the outside of dead axle 4, and shell 6 is mounted on the outside of shaft 5, on the side wall of shell 6
It is provided with the brush carrier 6c of radial aperture, brush 7 is mounted on brush carrier 6c, one end of brush 7 and the outer peripheral surface sliding contact of shaft 5.
The first end 4a of dead axle 4 is fixed on slip ring 3 after passing through shaft 5 and shell 6.Slip ring 3 include rotating part 3a and
Stationary part 3b, rotating part 3a can support 2 to be fixedly connected with the inner surface of rotation axis 203 by slip ring, and stationary part 3b can
It is connect with the first end 4a of dead axle 4.On the second end 5b setting dead axle 4 of shaft 5, the rotation of the first end 5a and slip ring 3 of shaft 5
Part 3a connection, more specifically, shaft 5 is connected and being connected in slip ring support 2 with rotating part 3a and rotation axis 203
It connects.When rotation axis 203 rotates, slip ring support 2, rotating part 3a and shaft 5 can be driven to rotate.
The first end 5a of shaft 5 is connect with lightning protection downlead 401, can be by wind-driven generator by lightning protection downlead 401
Lightning current on the blade of group is guided to shaft 5.It one end of brush 7 and 5 appearance face contact of shaft and is electrically connected, brush 7
The other end is electrically connected with down conductor 402, therefore, can be guided the lightning current in shaft 5 to grounding lead by brush 7
Line 402, and guided lightning current to discharging greatly by down conductor 402.
The specific connection relationship between all parts of lightning protection device 100 is carried out to Fig. 7 by according to fig. 2 below detailed
Description.
The lightning protection device 100 of an exemplary embodiment of the present invention can also include sliding bearing 10, sliding bearing 10
It is fixedly set on dead axle 4, shaft 5 is rotatably sleeved on sliding bearing 10.
Be also provided with insulation sleeve 9 between sliding bearing 10 and dead axle 4, dead axle 4, insulation sleeve 9, sliding bearing 10 by
It is interior and be sequentially sleeved at outside together and relatively fixed.Insulation sleeve 9 is fixed on to the outside of dead axle 4, dead axle 4 may be implemented and is set
The insulation effect between other components in 4 outside of dead axle is set, thunder and lightning is prevented to be streamed on dead axle 4.
Referring to figure 5 and figure 6, it may also be formed with the location hole 4c radially opened up on the side wall of dead axle 4, in insulation sleeve 9
The location hole 9a radially extended is also formed on the corresponding position of side wall.Preferably, location hole 4c can be set close to dead axle 4
Second end 4b, to reserve installation space on dead axle 4 to shaft 5 and shell 6.
Insulation sleeve 9 is set in the outside of dead axle 4, location hole 4c and 9a are mutually aligned, and passes through such as screw or riveting
The fasteners such as nail tighten together insulation sleeve 9 and dead axle 4, prevent dead axle 4 and insulation sleeve 9 from generating along axial opposite sliding
Diametrically rotate.
Sliding bearing 10 is set in the outside of insulation sleeve 9, it is preferable that one end of sliding bearing 10 is fastened on insulation sleeve 9
In the seam allowance formed in peripheral surface, the other end of sliding bearing 10 and the end part aligning of insulation sleeve 9 are positioned, to prevent on-slip moving axis
It holds stress between 10 and insulation sleeve 9 and concentrates the fatigue wear occurred, extend the service life of sliding bearing.Sliding bearing 10 with
It can be socketed using transition fit between insulation sleeve 9 or be interference fitted socket, to prevent between on-slip dynamic bearing 10 and insulation sleeve 9
It relatively rotates.
Shell 6 is set in the outside of shaft 5, and is fixedly connected with dead axle 4, so that shaft 5 be made to be located in relative rotation
Between shell 6 and dead axle 4.Shell 6 can be fixedly connected on insulation sleeve 9.It may also be formed with flange on the side wall of insulation sleeve 9.
Likewise, it is also formed with flange in the first end 6a of shell 6, it is logical on the flange of the through-hole on the flange of shell 6 and insulation sleeve 9
Hole matches, and the flange of the flange of insulation sleeve 9 and shell 6 can be fixed to one using the fastener of rivet, bolt etc.
It rises, so as to be fixedly connected between shell 6 and insulation sleeve 9.
Preferably, insulation sleeve 9 is processed to be formed using the material with insulation performance, such as can use epoxy resin hard
The materials machine-shaping such as laminate；In order to guarantee the insulation performance of insulation sleeve 9, the minimum cylinder thickness of insulation sleeve 9 can be set
It is set to 10 millimeters；But the material of insulation sleeve 9 and cylinder thickness are not limited only to this.Shaft 5 and shell 6 are formed by metal material,
Such as the materials such as Q235B, but not limited to this；On the one hand, the intensity of the material with insulation performance used due to insulation sleeve 9 is small
In the intensity for the metal material that shell 6 uses, therefore, fastener loosens in order to prevent, in the flange and shell of fixed insulation sleeve 9
When 6 flange, fastener needs to penetrate the flange of shell 6 from the flange side of insulation sleeve 9, to guarantee fastening quality.Another party
Sliding bearing 10 is set in insulation sleeve 9 since the intensity of the material of insulation sleeve 9 is less than the intensity of the material of shaft 5 by face
Outside, be used to support shaft 5, avoid and shaft 5 is directly set in what caused shaft 5 on insulation sleeve 9 occurred with dead axle 4
Therefore not coaxial phenomenon can guarantee the coaxial precision between shaft 5 and dead axle 4 by sliding bearing 10.
Further, referring to figure 6 and figure 7, other than the feature that shell 6 described above has, according to the present invention
Exemplary embodiment in, shell 6 also has features described below so that lightning protection device 100 is more compact in structure, tool
Body is described as follows：
The through-hole for installing brush carrier 6c is formed on the side wall of shell 6, the shape of the through-hole can be triangle, four sides
The shapes such as shape or circle, but not limited to this；Same cross-sectional shape is welded at the corresponding position of through-hole on the side wall of shell 6
The brush carrier 6c of shape, brush carrier 6c have the hollow space for accommodating brush 7, so that brush 7 passes through the through-hole on the side wall of shell 6 simultaneously
Touch the outer peripheral surface of shaft 5.
Brush 7 is directly inserted into brush carrier 6c, passes radially through the outer peripheral surface that shell 6 directly contacts shaft 5, brush 7
The surface of the contact jaw of the outer peripheral surface of shaft 5 is radially contacted with as curved surfaces, and the song of the curved surfaces of the contact jaw of brush 7
Rate is equal to the curvature of the outer peripheral surface arc of shaft 5, can make the contact surface between the contact jaw of brush 7 and the outer peripheral surface of shaft 5
Product increases, and further increases the electric conductivity between brush 7 and shaft 5, is conducive to the lightning protection effect for improving lightning protection device 100.
The material of brush 7 is the material with satisfactory electrical conductivity and wearability, such as can use such as carbon, copper or metal
The conductive materials such as alloy.For example, the carbon brush made of graphite material can be used in brush 7, carbon brush can produce when contacting friction with shaft 5
Raw a small amount of carbon dust, suitable carbon dust play lubricating action to shaft 5 and sliding bearing 10.
In the course of rotation, brush 7 slides relatively in the outer peripheral surface of shaft 5 to form conductive path shaft 5, can incite somebody to action
Lightning current in shaft 5 is guided to brush 7.Brush 7 can be connect with brush downlead 7a, brush downlead 7a can directly with
Down conductor 402 connects, and the thunder and lightning on brush 7 is streamed to down conductor 402, will by down conductor 402
Thunder and lightning is streamed to ground and is discharged.
Preferably, tooth shaped component 6d can also be welded on shell 6, tooth shaped component 6d is preferred design, and being not must
The component of palpus.Tooth shaped component 6d is set on shell 6 for guiding the lightning current overloaded in shaft 5 to down conductor 402
It is discharged, is overloaded to prevent lightning current on rotation stop axis 5, improve the safety of lightning protection device 100.
Tooth shaped component 6d can be plate, bulk or cylindric etc., as long as the component with teethed end faces.Tooth
The tooth form end of shape component 6d radially penetrates the side wall surface of shell 6 to the outer peripheral surface of shaft 5 to form discharging gap.
When the lightning current overload in shaft 5, can be incited somebody to action by the discharging gap formed between tooth shaped component 6d and shaft 5
The lightning current of overload is guided into down conductor 402.
It is also formed with mounting hole on tooth shaped component 6d, for connecting down conductor 402 and brush downlead 7a.
According to an embodiment of the invention, on the one hand, by by 7 radially installed of brush in 6 side wall of shell, and in radial side
To the outer peripheral surface sliding contact with shaft 5, the contact area between brush 7 and shaft 5 is increased, and reduces 7 individual pen of brush
Frictional distance increases the working efficiency of lightning protection device, improves lightning protection effect；On the other hand, brush 7 is directly inserted into outer
, can be in order to the installation and replacement of brush 7 in the brush carrier 6c of shell 6, and brush 7 is mounted on shell 6, is not needed in replacement
Dismantle the main component of lightning protection device 100, it is therefore prevented that because frequently disassembly leads to the damage of main component, it is thus possible to improve anti-
The service life of thunder device 100.On the other hand, tooth shaped component 6d is directly welded on shell 6, is not needed again artificial by tooth form
Component 6d is installed on the shell, reduces the workload of assembly, the assembly essence between shell 6 and shaft 5 of tooth shaped component 6d
Degree can be guaranteed by machining accuracy, avoid installation error caused by artificial install, the operation for improving lightning protection device 100 can
By property.
Shell 6 is the tube structure for the diameter that diameter is greater than shaft 5, on the second end 6b of shell 6, is formed with towards outer
The collar flange that shell 6 radially inside extends is arranged with sealing ring 11 on the flange, and is directly contacted and turned by sealing ring 11
5 outer wall of axis.Since the diameter of shell 6 is greater than the diameter of shaft 5, it is formed between insulation sleeve 9, shell 6 and shaft 5
Cricoid hollow space, and sealed by sealing ring 11, to form hollow confined space.
Sealing ring 11 can be formed by the elastic material with insulation performance, such as silicon rubber, plastics etc. have sealing performance
Material；Sealing ring 11 be arranged between shell 6 and shaft 5, not only can with the hollow space between sealing shell 6 and shaft 5,
Insulating effect can also be played between shell 6 and shaft 5.
Referring to Fig. 5, the peep hole 6e for penetrating its side wall, the shape and size of peep hole 6e can also be formed on shell 6
It can be by the setting as suitably desired of those skilled in the art.
The diaphragm seal that peep hole 6e is formed by the material with transparent nature, such as can choose poly-methyl methacrylate
The transparent membrane that ester (PMMA) material is formed after thermoplastic process is processed seals peep hole 6e.Peep hole 6e can be used for seeing
Examine the situation in the hollow space between shell 6 and shaft 5, for example, can observe brush 7 abrasion condition or brush 7 because
The accumulation situation of the powder of abrasion and generation.Preferably, peep hole 6e can be set between two brush carrier 6c, and in peep hole
Brush carrier 6c is welded to install carbon brush 7 after symmetrically respectively biasing certain angle aperture in the two sides of 6e.
It is deposited in the powder between shell 6 and shaft 5 in order to facilitate cleaning, discharge orifice 6f can also be formed on shell 6,
The shape and size of discharge orifice 6f can be by the setting appropriate as needed of those skilled in the art.In order to ensure discharge orifice
The leakproofness of 6f, can using the sealing-plug sealed discharging hole 6f with good seal performance, such as can using rubber or
Rubber stopper made of the materials such as silica gel realizes sealing.Preferably, discharge orifice 6f can be set in the underface of shell 6, in order to
Clear up powder.Tooth shaped component 6d can be symmetricly set on the two sides discharge orifice 6f.
Referring to Fig. 2, Fig. 3 and Fig. 4, slip ring 3 includes rotating part 3a and stationary part 3b, wherein rotating part 3a can be with
It is rotated relative to stationary part 3b.Rotating part 3a is fixedly attached in rotation axis 203 by slip ring support 2.Make turning for slip ring
Dynamic part 3a is rotated together with rotation axis 203.Connecting flange can be set on rotating part 3a, passed through connecting flange and cunning
Ring support 2 is fixedly connected.Stationary part 3b is fixedly connected with the first end 4a of dead axle 4.As an example, the first connection can be passed through
Component 8 connects the first end 4a of stationary part 3b Yu dead axle 4.
First connecting elements 8 may include slip ring stabilizer blade 8a and shift fork 8b.Slip ring stabilizer blade 8a is that two sides are formed with protrusion
Plate structure, and the mode for being fastened by bolts or welding is fixed on the end of the stationary part 3b of slip ring 3；Shift fork 8b's
Middle part is to be formed with sleeve, and sleeve can be socketed with the first end 4a of dead axle 4.Fork there are two being formed on the outside side wall of sleeve
Foot, two prong extending radially outwardly along sleeve are formed with card slot in the end of each prong.In sleeve and dead axle 4
It could be formed with radial through-hole on the corresponding position of first end 4a, on the first end 4a that dead axle 4 is passed through by fastener
Dead axle 4 and shift fork 8b can be connected and fixed by through-hole with the through-hole on the sleeve of shift fork 8b.Wherein, fastener can be bolt or
Person's rivet, but not limited to this, screw loosening, can also smear screw thread fastening glue on screw in order to prevent.By by shift fork 8b
Two prongs on card slot engage with the protrusion of the two sides slip ring stabilizer blade 8a, the first end 4a of dead axle 4 can be made to be fixed on slip ring 3
Stationary part 3b on and keep opposing stationary state.
Dead axle 4 and slip ring 3 are installed on the same axis, to guarantee the same of lightning protection device 100 by the first connecting elements 8
Axis degree promotes the working performance of lightning protection device 100.
The second end 4b of dead axle 4 can be fixed on engine room foundation, for example, 1 can be supported to be connected in Fig. 1 by dead axle
Shown in engine room foundation 300.It could be formed with flange in the second end 4b of dead axle 4, it can be by dead axle 4 by flange and fastener
Second end 4b be fixed in dead axle support 1 so that dead axle 4 and engine room foundation 300 keep relative static conditions.
According to an embodiment of the invention, axially extending bore can be formed with inside dead axle 4, for accommodating transmission of control signals
Signal cable.One end of signal cable may be coupled to the control cabinet of generating set in wind, and the other end passes through lightning protection device 100
Dead axle 4 is connected in rotation axis 203, to control the rotation of rotation axis 203.
The internal diameter of the axially extending bore of dead axle 4 can be designed according to the space needed for signal cable, it is preferable that in dead axle
In the case that 4 thickness is constant, the internal diameter of dead axle 4 can be determined as to size needed for can just accommodating signal cable, to subtract
The overall dimensions of small dead axle 4.In the middle section of slip ring stabilizer blade 8a, it may also be formed with the terminals for connection signal cable
Son, such as Harding's head (not shown), access slip ring 3 by the signal cable that Harding's head passes through dead axle 4, and pass through slip ring
3 are connected in rotation axis 203.
So that signal cable is passed through the inside of dead axle 4, not only can protect signal cable not by other component wears, it can be with
Prevent lightning current to the electromagnetic interference of signal cable.In addition, the insulation sleeve 9 that 4 outside of dead axle is arranged in is also possible to prevent across fixed
Electromagnetic interference of the signal cable by lightning current inside axis 4.
The first end 5a of shaft 5 can be fixedly connected by the second connecting elements 12 with the rotating part 3a of slip ring 3.Reference
Fig. 2 and Fig. 6 is formed with flange on the first end 5a of shaft 5, it is preferable that can be prefabricated multiple logical in the lower half portion of flange
The first end 5a of shaft 5 is connect by hole by the through-hole with the second connecting elements 12, and fixed by the second connecting elements 12
Onto slip ring support 2, when slip ring support 2 is rotated with the rotation axis 203 in Fig. 1, shaft 5 can be driven to rotate together.
Referring to Fig. 3, the second connecting elements 12 includes：Attachment beam 12a, mounting plate 12b and insulation board 12c.Attachment beam 12a can
To use square steel tube.One end of square steel tube is welded in slip ring support 2, and the other end is welded with the mounting plate 12b with through-hole.Even
The shape for meeting beam 12a and mounting plate 12b is unrestricted, as long as can be used for the supporting member of supports insulative plate 12c.It is logical
It crosses fastener insulation board 12c is fixed on mounting plate 12b, insulation board 12c is plate structure, and concrete shape is unrestricted
, at the upper end-face edge of insulation board, it is formed with the through-hole to match with the through-hole on the flange of the first end 5a of shaft 5, is led to
It crosses fastener the flange of the first end 5a of shaft 5 is fixed on insulation board 12c, thus by the rotating part of shaft 5 and slip ring 3
3a is fixedly connected.
Preferably, insulation board 12c is formed by the material with insulation performance, such as the materials such as epoxy resin rigid laminate
Compacting is formed, and is not limited thereto；On the one hand insulation board 12c is used to connect shaft 5 and slip ring support 2, on the other hand for making
2 insulation of shaft 5 and slip ring support prevents lightning current from burning slip ring support 2 and slip ring 3.
With continued reference to Fig. 6, engaging lug 5c is also formed on the flange of the first end 5a of shaft 5, such as can be first
The periphery two sides of the flange of 5a are held to be respectively formed the engaging lug 5c with through-hole, for connecting lightning protection downlead as shown in Figure 1
401, lightning current can be guided to shaft 5 by lightning protection downlead 401.
The brush 7 and tooth shaped component 6d being arranged in shaft 5 rotate logical to form the conduction of lightning current relative to shaft 5
Road can guide the lightning current in shaft 5 to down conductor 402, and be sent out lightning current along wind-force by down conductor 402
The pylon of motor group is routed to ground face and is discharged.
In an exemplary embodiment of the present invention, lightning protection device 100 described above is mainly used in wind-driven generator
In the main shaft system of group, to protect the base bearing 202 of main shaft system not burnt by lightning current, still, lightning protection device 100 can also be with
Applied to other fields, it is not limited thereto.When lightning protection device 100 is installed in wind power generating set, signal cable
Direction of routing along lightning protection device 100 5 axis direction of shaft, and lightning protection downlead 401 along shaft 5 be radially connected to turn
On axis 5, so that lightning protection downlead 401 be made to be arranged vertically within the direction of routing of signal cable, lightning current is avoided to the maximum extent
To the electromagnetic interference of signal cable.
In conclusion lightning protection device according to the present invention mainly optimizes the design of shell, there is lightning protection device tighter
The structure gathered and better lightning protection effect.It is embodied in following aspects：First, lightning current is along rotation axis transmitted inwards
Be connected to ground release along down conductor onto lightning protection device, then from lightning protection device, the circulation path of lightning current without
Cross base bearing, it is therefore prevented that main shaft system affords thunder and lightning and burns；Second, therefore sliding bearing to be set in the outside of insulation sleeve, use
In support shaft, the not coaxial phenomenon that shaft being directly set in, caused shaft occurs with dead axle on insulation sleeve is avoided, because
This, can guarantee the coaxial precision between shaft and dead axle by sliding bearing；Third, brush is directly inserted on shell
In brush carrier, it is easily installed and is replaced brush, and does not need the main component of disassembly lightning protection device in replacement, it is therefore prevented that because of frequency
It is numerous to dismantle the damage for leading to main component, the service life of lightning protection device can be improved；Fourth, brush radially connects with shaft
Touching, and the surface of the contact jaw of brush is curved surfaces, is effectively increased the contact area of the two and reduces brush
Individual pen frictional distance is conducive to the lightning protection effect for improving lightning protection device；Fifth, setting can just allowing signal for the internal diameter of dead axle
The size that cable passes through makes the more compact structure of lightning protection device；Sixth, signal cable passes through the inside of dead axle and draws with lightning protection
It is offline to be arranged vertically, it not only can protect signal cable not by other component wears, lightning current can also be prevented to signal cable
Electromagnetic interference；Seventh, setting tooth shaped component is for guiding the lightning current overloaded in shaft to down conductor on the shell
It is discharged, is overloaded to prevent lightning current on rotation stop axis, improve the safety of lightning protection device；Eighth, directly welding tooth on the shell
Shape component, do not need again it is artificial by tooth shaped component installation on the shell, reduce the workload of assembly, tooth shaped component with it is outer
Assembly precision between shell and shaft can be guaranteed by machining accuracy, avoided installation error caused by artificial install, improved
The operational reliability of lightning protection device.
A specific embodiment of the invention is described in detail above, although some implementations have been shown and described
Example, it will be understood by those skilled in the art that defined by the claims and their equivalents of the invention not departing from
It in the case where principle and spirit, can modify to these embodiments and perfect, these, which are modified and improve, should also be considered falling
Enter in protection scope of the present invention.
Claims (10)
1. a kind of lightning protection device, which is characterized in that the lightning protection device (100) includes：
Dead axle (4)；
Shaft (5), the shaft (5) is installed in rotation on the outside of the dead axle (4) relative to the dead axle (4), described
The first end (5a) of shaft (5) with lightning protection downlead (401) for being electrically connected；
Shell (6), the shell (6) are mounted on the outside of the shaft (5), are provided with diameter on the side wall of the shell (6)
To the brush carrier (6c) of aperture；
Brush (7) is radially inserted into the brush carrier (6c), and the appearance face contact with the shaft (5).
2. lightning protection device as described in claim 1, which is characterized in that the lightning protection device (100) further include insulation sleeve (9) and
Sliding bearing (10), the insulation sleeve (9) are set in the outside of the dead axle (4), and the sliding bearing (10) is set in described
The outside of insulation sleeve (9), the dead axle (4), the insulation sleeve (9) and the sliding bearing (10) are fixed to each other；
The shell (6) is fixed on the insulation sleeve (9), and in the side of the insulation sleeve (9), the shell (6)
Hollow confined space is formed between wall and the outer surface of the shaft (5), the brush carrier (6c) is connected to the confined space.
3. lightning protection device as described in claim 1, which is characterized in that the lightning protection device (100) further includes slip ring (3), institute
Stating slip ring (3) includes rotating part (3a) and stationary part (3b), the rotating part (3a) of the slip ring (3) with described turn
Axis (5) is fixedly connected, and the stationary part (3b) of the slip ring (3) is fixedly connected with the first end (4a) of the dead axle (4).
4. lightning protection device as claimed in claim 3, which is characterized in that the first end (4a) of the dead axle (4) connects by first
Connection member (8) is connect with the stationary part (3b) of the slip ring (3), and first connecting elements (8) includes slip ring stabilizer blade
(8a) and shift fork (8b), the slip ring stabilizer blade (8a) are fixedly connected with the stationary part (3b) of the slip ring (3), and described group
Fork (8b) is fixedly connected with the first end (4a) of the dead axle (4), is formed with protrusion, the shift fork on the slip ring stabilizer blade (8a)
Card slot is formed on (8b), by engaging the protrusion with the card slot, so that the slip ring stabilizer blade (8a) and the shift fork
(8b) is relatively fixed.
5. lightning protection device as claimed in claim 3, which is characterized in that the lightning protection device (100) further includes slip ring support
(2), the slip ring support (2) is fixedly connected with the rotating part (3a), and the shaft (5) passes through the second connecting elements (12)
Be fixedly connected with the rotating part (3a) of the slip ring (3), second connecting elements (12) include attachment beam (12a),
Mounting plate (12b) and insulation board (12c), one end of the attachment beam (12a) are connected on the slip ring support (2), the peace
Loading board (12b) is fixed on the other end of the attachment beam (12a), and the insulation board (12c) is fixed on the mounting plate (12b)
On, the shaft (5) is connected to the insulation board (12c).
6. lightning protection device as described in claim 1, which is characterized in that the lightning protection device (100) further includes tooth shaped component
(6d) and brush downlead (7a), the tooth shaped component (6d) are arranged on the side wall of the shell (6), the tooth shaped component
The one end of (6d) is tooth form end and faces the shaft (5) radially to form discharging gap, the brush downlead
The brush (7) is electrically connected by (7a) with the tooth shaped component (6d), and the other end of the tooth shaped component (6d) is used for and ground connection
Downlead (402) electrical connection.
7. such as lightning protection device of any of claims 1-6, which is characterized in that be respectively formed on the shell (6)
Penetrate the peep hole (6e) and discharge orifice (6f) of the side wall of the shell (6), wherein the peep hole (6e) is by by saturating
The component sealing that bright material is formed, the discharge orifice (6f) are sealed by sealing-plug.
8. lightning protection device as claimed in claim 4, which is characterized in that the dead axle (4) has axially extending bore, for accommodating letter
Number cable, being formed in the position corresponding with first end (4a) of the dead axle (4) of the slip ring stabilizer blade (8a) allows institute
State the through-hole that signal cable passes through.
9. a kind of wind power generating set, which is characterized in that the wind power generating set includes such as any one of claim 1-8 institute
The lightning protection device stated, the lightning protection device (100) are mounted on the main shaft system of the wind power generating set.
10. a kind of wind power generating set, which is characterized in that the wind power generating set includes lightning protection as claimed in claim 8
Device, the lightning protection device are mounted on the main shaft system of the wind power generating set, the main shaft system packet of the wind power generating set
It includes：Fixing axle (201), base bearing (202) and rotation axis (203), the rotation axis (203) pass through the base bearing (202) phase
To the inside for being rotatably arranged at the fixing axle (201), the lightning protection device passes through dead axle support (1) and slip ring support (2)
Be mounted on the axis of the main shaft system, the direction of routing of the lightning protection downlead (401) and down conductor (402) with pass through
The direction of routing of the signal cable of the dead axle (4) is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810697043.8A CN108869201B (en) | 2018-06-29 | 2018-06-29 | Lightning protection device and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810697043.8A CN108869201B (en) | 2018-06-29 | 2018-06-29 | Lightning protection device and wind generating set |
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| CN108869201A true CN108869201A (en) | 2018-11-23 |
| CN108869201B CN108869201B (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810697043.8A Active CN108869201B (en) | 2018-06-29 | 2018-06-29 | Lightning protection device and wind generating set |
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| CN113586328A (en) * | 2021-06-01 | 2021-11-02 | 国电联合动力技术有限公司 | Wind wheel subassembly and fan |
| CN113757054A (en) * | 2021-10-27 | 2021-12-07 | 上海电气风电集团股份有限公司 | Down-lead sliding connection device of wind generating set |
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| Publication number | Publication date |
|---|---|
| CN108869201B (en) | 2019-08-30 |
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