CN109114159A - Current vortex vibration absorber and installation method suitable for wind electricity blade - Google Patents
Current vortex vibration absorber and installation method suitable for wind electricity blade Download PDFInfo
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- CN109114159A CN109114159A CN201811127092.4A CN201811127092A CN109114159A CN 109114159 A CN109114159 A CN 109114159A CN 201811127092 A CN201811127092 A CN 201811127092A CN 109114159 A CN109114159 A CN 109114159A
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- 230000005611 electricity Effects 0.000 title claims abstract description 57
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009434 installation Methods 0.000 title claims abstract description 9
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 229910045601 alloy Inorganic materials 0.000 claims description 47
- 239000000956 alloy Substances 0.000 claims description 47
- 238000003466 welding Methods 0.000 claims description 17
- 229920006332 epoxy adhesive Polymers 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 9
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- 238000004873 anchoring Methods 0.000 claims description 4
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
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- 238000013016 damping Methods 0.000 abstract description 15
- 239000007788 liquid Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
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- 238000011161 development Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 241001247986 Calotropis procera Species 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
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- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000003795 chemical substances by application Substances 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
- F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Wind Motors (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Suitable for the current vortex vibration absorber and installation method of wind electricity blade, including power-on and power-off vortex board, shape memory alloy spring, permanent magnet, cable wire, upper and lower hold-down support and shielding case.The power-on and power-off vortex board is respectively welded at hold-down support side up and down by the shape memory alloy spring, the permanent magnet uses cylindrical body, it is covered on the cable wire by interstitial hole, it is freely slidable along cable wire, described cable wire one end sequentially passes through the upper hold-down support, power on vortex board and permanent magnet, it is welded on the upper surface of the lower electric whirlpool plate, the other end is connected by R steel bar pull ring with blade tip, the vibration of blade tip drives lower current vortex plate close to permanent magnet by cable wire, simultaneously with the increase and decrease of wind electricity blade rotation speed, the centripetal force of permanent magnet changes, along cable wire close to or far from current vortex plate, to consume energy by changing eddy-current damping power and tension shape memory alloy spring, reduce vibration.
Description
Technical field
The present invention relates to wind-powered electricity generation structure vibration damping control technology fields, and in particular to the current vortex for being adapted for wind electricity blade subtract
Vibrating device.
Background technique
Wind-powered electricity generation as technology in the development and utilization of current renewable energy, send out by most mature, most scale development and commercialization
One of the generation mode of exhibition prospect, the increasingly attention by countries in the world, have obtained extensive development and utilization.
Wind power generating set is by blade, transmission system, generator, gear-box, current transformer and electrical control system, tower
The power generator of the compositions such as frame, wherein blade is to guarantee that wind-power electricity generation group effectively captures wind energy transformation and is mechanical energy and is converted into
The core component of electric energy directly affects the performance and generated energy of blower.In recent years the length of wind electricity blade increases sharply, with blade
The increase of size improves wind energy utilization, reduces it and vibrates the adverse effect generated to wind power generating set, becomes current society
The important focus of meeting.
Since wind electricity blade figure is big, and it is located at tower top, is in rotation status, maintenance is inconvenient, and all vibration dampings are set
Meter should all adapt to the cyclone power in high-altitude, the complicated external environment such as temperature difference transformation, and meet the requirement of wind electricity blade durability.
Eddy current damper is that the principle of eddy current effect is moved in magnetic field or generated in alternating magnetic field based on conductor come work,
It has many advantages, such as it is non-contact, without mechanical friction and need not lubrication, the service life it is long, meet requirement of the wind electricity blade to damper.Together
When the supply of wind electricity blade internal power source it is inconvenient, need to consider the problems of energy consumption, permanent-magnet type electricity whirlpool in design eddy current damper
Damper extraneous need not energize, and have big advantage in this respect.And it wind electricity blade inner space and effectively carries
Limit, eddy-current damping structure and vibration insulating system should compact as far as possible and structure it is lighter.
Summary of the invention
The object of the present invention is to provide a kind of current vortex vibration absorbers and installation method suitable for wind electricity blade.
The present invention is adapted for the current vortex vibration absorber and installation method of wind electricity blade, and the current vortex suitable for wind electricity blade subtracts
Vibrating device, including current vortex plate, alloy stop collar, shape memory alloy spring, permanent magnet 819, hold-down support, shielding case 814
And No. 1 antifriction rubber transparent sleeve 824, the shielding case 814 use cylinder using cylindric, described permanent magnet 819
Body, center are equipped with round through hole, and the alloy stop collar includes upper alloy stop collar 812 and lower alloy stop collar
813, and alloy stop collar 812 and 813 is welded on 814 inside of shielding case；The current vortex plate includes powering on vortex board 811
With lower current vortex plate 815, powers on 811 center of vortex board and be equipped with round through hole；The shape memory alloy spring packet
Include 816, the 2nd No. 1 shape memory alloy springs 823 of the one No. 1 shape memory alloy spring and No. 2 shape memory alloy springs
7；The hold-down support includes upper hold-down support 822 and lower hold-down support 818, and the two is respectively welded at 814 both ends of shielding case,
Wherein upper 822 center of hold-down support is equipped with round through hole, will be powered on using the 2nd No. 1 shape memory alloy spring 823
Vortex board 811 and upper hold-down support 822 weld, will be outside lower hold-down support 818 using 4 No. 2 shape memory alloy springs 7
Side is connect with wind electricity blade inner surface, using the one No. 1 shape memory alloy spring 816 by lower current vortex plate 815 and lower fixation
It is welded on the inside of support 818, and in one end of lower 815 other side center weld cable wire 2 of current vortex plate, cable wire 2 cooperates No. 1 to prevent
824 side of friction rubber transparent sleeve passes through lower alloy stop collar 813, permanent magnet 819, upper alloy stop collar 812, upper current vortex
811, the one No. 1 shape memory alloy springs 816 of plate and upper hold-down support 822 are connected with wind power blade tip lightening, constitute entire
The assembling of vibration absorber.
The installation method of current vortex vibration absorber suitable for wind electricity blade of the invention, the steps include:
Step 1: based on shielding case 814, ball 820 is packed into the ball card slot 821 of shielding case inner wall, and pour into lubrication
After oil, card slot both ends are sealed；Upper alloy stop collar 812 is welded in corresponding position, after being packed into permanent magnet 819, corresponding
Weld lower alloy stop collar 813 in position；
Step 2: the one No. 1 816 one end of shape memory alloy spring is welded on to the inner surface of the lower hold-down support 818,
The other end welds the side of current vortex plate 815, in one end of lower 815 other side of the current vortex plate welding cable wire 2；
Step 3: the 2nd No. 1 823 one end of shape memory alloy spring is welded on to the inner surface of the upper hold-down support 822,
The other end is burn-on on 811 side of current vortex plate；
Step 4: cooperating No. 2 antifriction rubber transparent sleeves 824 to sequentially pass through lower alloy the other end of the cable wire 2 connected and limit
Position ring 813, permanent magnet 819, upper alloy stop collar 812, power on 811, the 2nd No. 1 shape memory alloy springs 823 of vortex board, on
After hold-down support 822, No. 1 antifriction rubber sleeve 4 is cooperated to pass through R steel bar pull ring 1 at 2 end of cable wire, with the firm anchor of reinforcing bar button 3
Gu；
Step 5: the upper hold-down support 822 connected and lower hold-down support 818 are welded with 814 both ends of shielding case respectively；
Step 6: the R steel bar pull ring 1 being connected on cable wire 2 is pasted onto wind power blade tip lightening inner surface 9 with epoxy adhesive
Place；
Step 7: 4 No. 2 shape memory alloy springs are welded on the bottom welding block 817 of mounted lower hold-down support 818
7, No. 2 shape memory alloy spring connectors 10, which are respectively cooperating with, in No. 27 other ends of shape memory alloy spring connects R steel bar
Pull ring 1 with the firm anchoring of reinforcing bar latch closure 3, and tenses No. 2 marmem power alloy springs 7, by 4 R steel bar pull rings 1,
It is pasted at the inner surface 9 in the middle part of wind electricity blade with epoxy adhesive；
Step 8: second U-shaped support 517 is connected by screw rod 519 and nut 516 in the lower end of selected small-sized viscous damper 5,
And the bottom plate 518 of the second U-shaped support 517 is pasted onto wind electricity blade inner surface 9 with epoxy adhesive and is gone out, the upper end is by screw rod
825 and nut 826 be connected on the upper U-shaped support 810 of the first reserved support of hold-down support 822, complete entire vibration damping dress
The assembling set.
The present invention has the advantage that compared with the existing technology
1, the novel current vortex vibration absorber of the present invention is easy to connect, based on shielding case, after all parts are assembled in order,
Two hold-down supports up and down are welded, it is easy to operate, easy for construction；
2, novel current vortex vibration absorber effectiveness in vibration suppression of the invention is excellent, drives current vortex plate close to permanent magnetism by external load
Body, meanwhile, permanent magnet, constantly close to or far from current vortex plate, changes current vortex to pass through according to the size of centripetal acceleration
No. 1 shape memory alloy spring of damping force and stretching consumes energy, reduces vibration；
3, novel current vortex vibration absorber better mechanical property of the invention, it is easy to accomplish, the component connection designed in the present invention
Using welding, reinforcing bar latch closure and bolt, be belong to the more mature connection type of existing market, while R steel bar pull ring with
Wind electricity blade is connected using epoxy adhesive, is influenced on wind electricity blade smaller；
4, the added influence that novel current vortex vibration absorber of the invention generates blade is smaller, the lower fixation designed in the present invention
Support connects No. 2 shape memory alloy springs, and upper hold-down support connects small-sized viscous liquid damper, so that novel current vortex subtracts
Vibrating device generates new vibration and obtains good control, influences on wind electricity blade smaller；
5, novel current vortex vibration absorber design structure of the invention is compact, limited sky inside reasonable utilization wind electricity blade
Between and effective bearing capacity.
Detailed description of the invention
Fig. 1 is the current vortex vibration absorber combination diagram suitable for wind electricity blade of the invention, and Fig. 2 is current vortex of the present invention
Required small-sized viscous liquid damper schematic diagram in vibration absorber, Fig. 3 are sectional view of the Fig. 2 along 514 axial line of piston rod, figure
4 be combination diagram after the completion of connection, load transfer device connection inside the current vortex vibration absorber suitable for wind electricity blade of the invention,
Fig. 5 is No. 6 combination diagrams of current vortex vibration absorber node suitable for wind electricity blade of the invention；Wherein, 1:R steel bar is drawn
Ring, 2: cable wire, 3: reinforcing bar latch closure, No. 4:1 antifriction rubber bush, 5: small-sized viscous damper, 6:6 node, 7:2 shape
Memory alloy spring, 8: eddy-current damping part, 9: wind electricity blade, 10:2 shape memory alloy spring connector, 810: the
One U-shaped fixing seat, 811: power on vortex board, 812: upper alloy stop collar, 813: lower alloy stop collar, 814: shielding case, 815:
Lower current vortex plate, 816: the one No. 1 shape memory alloy springs, 817: welding block, 818: lower hold-down support, 819: permanent magnet,
820: advance ball, 821: ball card slot, 822: upper hold-down support, 823: the two No. 1 shape memory alloy springs, No. 824:2
The antifriction transparent lasso trick of rubber, 825:1 screw rod, 826:1 nut, 511:1 ball bearing, 512: end horseshoe,
513: cylinder, 514: piston rod, 515:2 ball bearing, 516:2 nut, No. 517:2 U-shaped fixing seat, 518:U type are fixed
Seat bottom plate, 519:2 screw rod, 520: head sealing, 521: silicone oil, 522: piston head, 523: oilhole.
Specific embodiment
As shown in Fig. 1 ~ Fig. 5, the present invention is adapted for the current vortex vibration absorber and installation method of wind electricity blade, is suitable for wind-powered electricity generation
The current vortex vibration absorber of blade, including current vortex plate, alloy stop collar, shape memory alloy spring, permanent magnet 819 are fixed
Support, shielding case 814 and No. 1 antifriction rubber transparent sleeve 824, the shielding case 814 is using cylindric, described permanent magnetism
Body 819 uses cylindrical body, and center is equipped with round through hole, and the alloy stop collar includes upper 812 He of alloy stop collar
Lower alloy stop collar 813, and alloy stop collar 812 and 813 is welded on 814 inside of shielding case；The current vortex plate includes
Vortex board 811 and lower current vortex plate 815 are powered on, 811 center of vortex board is powered on and is equipped with round through hole；The shape note
Recalling alloy spring includes 816, the 2nd No. 1 shape memory alloy springs 823 of the one No. 1 shape memory alloy spring and No. 2 shapes
Memory alloy spring 7；The hold-down support includes upper hold-down support 822 and lower hold-down support 818, and the two is respectively welded at screen
814 both ends of shell are covered, wherein upper 822 center of hold-down support is equipped with round through hole, utilize the 2nd No. 1 marmem bullet
Spring 823 will power on vortex board 811 and upper hold-down support 822 welds, will be lower solid using 4 No. 2 shape memory alloy springs 7
Determine the outside of support 818 to connect with wind electricity blade inner surface, using the one No. 1 shape memory alloy spring 816 by lower current vortex plate
815 and lower hold-down support 818 on the inside of weld, and in one end of lower 815 other side center weld cable wire 2 of current vortex plate, steel
Rope 2 cooperates No. 1 antifriction 824 side of rubber transparent sleeve to pass through lower alloy stop collar 813, permanent magnet 819, upper alloy stop collar
812,811, the one No. 1 shape memory alloy springs 816 of vortex board and upper hold-down support 822 and wind power blade tip lightening phase are powered on
Even, the assembling of entire vibration absorber is constituted.
As shown in Figure 1, the upper hold-down support 822 is equipped with the first U-shaped fixing seat 810, and wear corresponding screw rod 825
With nut 826.
As shown in Figure 1, Figure 4, Figure 5,818 end of lower hold-down support is equipped with welding block 817, welds 4 No. 2 shapes
Memory alloy spring 7.
As shown in Figure 1,814 inner wall uniform welding of shielding case, 4 row's ball card slot 821, installs full advance ball
820, lubricating oil is added and seals.
As shown in Figure 1, the permanent magnet 819 and two blocks of current vortex plates can be in 4 row's advance balls under external action
820 slide along shielding case in the position that metal spacing ring limits.
As shown in Figure 1, the permanent magnet 819 and two blocks of current vortex plates are in relatively stable shape when without external load effect
State.
The installation method of current vortex vibration absorber suitable for wind electricity blade of the invention, the steps include: such as Fig. 1 ~ Fig. 5 institute
Show,
Step 1: based on shielding case 814, ball 820 is packed into the ball card slot 821 of shielding case inner wall, and pour into lubrication
After oil, card slot both ends are sealed；Upper alloy stop collar 812 is welded in corresponding position, after being packed into permanent magnet 819, corresponding
Weld lower alloy stop collar 813 in position；
Step 2: the one No. 1 816 one end of shape memory alloy spring is welded on to the inner surface of the lower hold-down support 818,
The other end welds the side of current vortex plate 815, in one end of lower 815 other side of the current vortex plate welding cable wire 2；
Step 3: the 2nd No. 1 823 one end of shape memory alloy spring is welded on to the inner surface of the upper hold-down support 822,
The other end is burn-on on 811 side of current vortex plate；
Step 4: cooperating No. 2 antifriction rubber transparent sleeves 824 to sequentially pass through lower alloy the other end of the cable wire 2 connected and limit
Position ring 813, permanent magnet 819, upper alloy stop collar 812, power on 811, the 2nd No. 1 shape memory alloy springs 823 of vortex board, on
After hold-down support 822, No. 1 antifriction rubber sleeve 4 is cooperated to pass through R steel bar pull ring 1 at 2 end of cable wire, with the firm anchor of reinforcing bar button 3
Gu；
Step 5: the upper hold-down support 822 connected and lower hold-down support 818 are welded with 814 both ends of shielding case respectively；
Step 6: the R steel bar pull ring 1 being connected on cable wire 2 is pasted onto wind power blade tip lightening inner surface 9 with epoxy adhesive
Place；
Step 7: 4 No. 2 shape memory alloy springs are welded on the bottom welding block 817 of mounted lower hold-down support 818
7, No. 2 shape memory alloy spring connectors 10, which are respectively cooperating with, in No. 27 other ends of shape memory alloy spring connects R steel bar
Pull ring 1 with the firm anchoring of reinforcing bar latch closure 3, and tenses No. 2 marmem power alloy springs 7, by 4 R steel bar pull rings 1,
It is pasted at the inner surface 9 in the middle part of wind electricity blade with epoxy adhesive；
Step 8: second U-shaped support 517 is connected by screw rod 519 and nut 516 in the lower end of selected small-sized viscous damper 5,
And the bottom plate 518 of the second U-shaped support 517 is pasted onto wind electricity blade inner surface 9 with epoxy adhesive and is gone out, the upper end is by screw rod
825 and nut 826 be connected on the upper U-shaped support 810 of the first reserved support of hold-down support 822, complete entire vibration damping dress
The assembling set.
The present invention provides a kind of novel current vortex vibration absorber suitable for wind electricity blade, including power-on and power-off vortex board, shapes
Shape memory alloys spring, permanent magnet, cable wire, upper and lower hold-down support and shielding case.The power-on and power-off vortex board passes through described
Shape memory alloy spring is respectively welded at hold-down support side up and down, and the permanent magnet uses cylindrical body, passes through interstitial hole
It covers on the cable wire, freely slidable along cable wire, described cable wire one end sequentially passes through the upper hold-down support, powers on
Vortex board and permanent magnet, are welded on the upper surface of the lower electric whirlpool plate, and the other end passes through R steel bar pull ring and blade tip phase
Even, the vibration of blade tip drives lower current vortex plate close to permanent magnet by cable wire, while with the increase and decrease of wind electricity blade rotation speed, forever
The centripetal force of magnet changes, along cable wire close to or far from current vortex plate, thus by changing eddy-current damping power and stretching shape
Shape memory alloys spring consumes energy, reduces vibration.
In order to further enhance permanent magnet described in novel current vortex vibration absorber and the sliding of power-on and power-off vortex board, in institute
4 rows are filled on the shielding case inner wall stated slides steel ball.In order to which the permanent magnet and current vortex plate that limit described generate excessive movement, make
It can not restore at the shape memory alloy spring deformation is excessive, be welded on shielding case between the permanent magnet and current vortex plate
Connect two alloy stop collars.To reduce novel eddy-current damping in the adverse effect of wind electricity blade internal vibration, described upper solid
Determine between support and wind electricity blade inner surface, fixes a small-sized viscous liquid damper with U-shaped support, described is small-sized viscous
Liquid condenser is widely applied at present in major vibration-proof structure, and 4 shape notes are welded on the lower hold-down support
Alloy spring is recalled, respectively along the inner surface that four direction is fixed on blade with the R steel bar pull ring.To reduce table in blade
Stress concentrates the damage to blade at the connecting node of face, improves the service life of wind power generating set, uses epoxy resin gluing
Agent is by the U-shaped support of R steel bar latch closure and small-sized viscous liquid damper and the firm connection of leaflet inner faces.It will be above-mentioned various
Accessory Members and the firm connection of blade inner wall form an entirety with blade, construct the novel current vortex suitable for wind electricity blade
Vibration absorber.
As shown in Figure 1, the current vortex vibration absorber suitable for wind electricity blade of the invention, including cable wire 2, power on vortex board
811, upper alloy stop collar 812, lower alloy stop collar 813, shielding case 814, the 815, the one No. 1 marmem of current vortex plate
Spring 816, hold-down support 818, permanent magnet 819, the 822, the 2nd No. 1 shape memory alloy spring 823 of upper hold-down support.Shielding case
Twice advance ball card slot 821 is set on 814 inner surfaces, and advance ball 820 is filled in the inside；Alloy stop collar is equipped with 2, welding
On 814 inner wall of shielding case, and permanent magnet 819 is packed among 2 alloy stop collars 812 and 813；One No. 1 shape memory
816 both ends of alloy spring are respectively welded hold-down support 822 and power on the 811, the one No. 1 shape memory alloy spring of vortex board
823 both ends Han Jie not descend hold-down support 818 and lower current vortex plate 815, and weld cable wire 2 in 815 other side of current vortex plate；It will be even
The cable wire 2 that connects cooperate No. 2 antifriction transparent lasso tricks 824 of rubber sequentially pass through across lower alloy stop collar 813, permanent magnet 819,
Upper alloy stop collar 812 powers on vortex board 811, the one No. 1 shape memory alloy springs 823, upper hold-down support 822, and will under
Hold-down support 818 and upper hold-down support 822 are welded on 814 both ends of shielding case, complete the resistance of novel current vortex vibration absorber
The assembling of Buddhist nun part.
As shown in figure 4, No. 2 shape memory alloy springs 7 in present invention combination eddy-current damping part 8,4, small-sized viscous
Each component such as liquid condenser 5 and R steel bar pull ring 1 is connected as a vibration absorber with wind electricity blade 9, resists jointly outer
Portion's effect, reaches vibration damping purpose.Used small-sized viscous liquid damper 5 is widely used in each big structure of building,
It constructs as shown in Figure 2；R steel bar is fixed in one end fits 1 antifriction rubber bush 4 reinforcing bar latch closure 3 of cable wire 2 to draw
Ring 1, and R steel bar pull ring 1 is bonded on the corresponding inner surface 9 of blade tip with epoxy adhesive, as shown in Fig. 1 ~ Fig. 5, simultaneously
Upper hold-down support 822 is equipped with No. 1 U-shaped support 810, and lower hold-down support 818 is equipped with welding block 817, passes through the first U-shaped support 810
No. 1 ball bearing 511 of small-sized viscous liquid damper 5, small-sized viscous liquid are connected by No. 1 screw rod 825 and No. 1 nut 826
5 other end of damper connects No. 2 ball bearings 517 by No. 1 screw rod 519 and No. 1 nut 516 by the second U-shaped fixing seat 515,
And be bonded in the bottom plate 518 of the second U-shaped fixing seat 515 on the inner surface 9 of blade with epoxy adhesive, pass through welding block 817
Welding 4 No. 2 shape memory alloy springs, 7,4 No. 27 other ends of shape memory alloy spring are respectively cooperating with connector 10 and use steel
Muscle latch closure 3 is fixed on 4 R steel bar pull rings 1, and 4 R steel bar pull rings 1 are bonded in blade with epoxy adhesive respectively
On corresponding inner surface 9, so that being fixed on leaflet inner faces 9 after the mutually firm connection of above-mentioned all parts, making itself and leaf
Piece constitutes a vibration absorber.
Drive lower current vortex plate 815 close to permanent magnet 819 by blade tip vibration, while with the increasing of wind electricity blade rotation speed
Subtract, the centripetal force of permanent magnet 819 changes, along cable wire 2 close to or far from current vortex plate 815 and 811, thus by changing electric whirlpool
Flow damping power and tension shape memory alloy spring 816 consume energy, reduce vibration.
The present invention devises the novel current vortex vibration absorber suitable for wind electricity blade using the principle of current vortex, by wind
The cable wire is connected at electric blade tip, by epoxy adhesive by the described small of the firm inner surface for being bonded in blade of each section
Type viscous liquid damper and shape memory alloy spring by novel eddy-current damping part and blade connect into one it is new whole
Body constitutes new vibration absorber.Drive lower current vortex plate close to permanent magnet by cable wire by the vibration of blade tip, while with wind-powered electricity generation
The centripetal force of the increase and decrease of blade rotation speed, permanent magnet changes, along cable wire close to or far from current vortex plate, to pass through change
Eddy-current damping power and tension shape memory alloy spring consume energy, reduce the vibration of blade, simple structure, Path of Force Transfer are bright
Really, convenient for design and calculating, construction technology is simple.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. it is suitable for the current vortex vibration absorber of wind electricity blade, including current vortex plate, alloy stop collar, shape memory alloy spring,
Permanent magnet (819), hold-down support, shielding case (814) and No. 1 antifriction rubber transparent sleeve (824), it is characterised in that described
Shielding case (814) uses cylindrical body using cylindric, described permanent magnet (819), and center is equipped with round through hole, described
Alloy stop collar include upper alloy stop collar (812) and lower alloy stop collar (813), and by alloy stop collar (812) and
(813) it is welded on the inside of shielding case (814)；The current vortex plate includes powering on vortex board (811) and lower current vortex plate
(815), it powers on vortex board (811) center and is equipped with round through hole；The shape memory alloy spring includes the one No. 1
Shape memory alloy spring (816), the 2nd No. 1 shape memory alloy spring (823) and No. 2 shape memory alloy springs (7)；Institute
The hold-down support stated includes upper hold-down support (822) and lower hold-down support (818), and the two is respectively welded at shielding case (814) two
End utilizes the 2nd No. 1 shape memory alloy spring (823) wherein upper hold-down support (822) center is equipped with round through hole
Vortex board (811) will be powered on and upper hold-down support (822) welds, using 4 No. 2 shape memory alloy springs (7) will under
It is connect with wind electricity blade inner surface on the outside of hold-down support (818), using the one No. 1 shape memory alloy spring (816) by lower electricity
It is welded on the inside of vortex board (815) and lower hold-down support (818), and in lower current vortex plate (815) other side center weld steel
One end of rope (2), cable wire (2) cooperate No. 1 antifriction rubber transparent sleeve (824) side across lower alloy stop collar (813), forever
Magnet (819), upper alloy stop collar (812), power on vortex board (811), the one No. 1 shape memory alloy spring (816) and on
Hold-down support (822) is connected with wind power blade tip lightening, constitutes the assembling of entire vibration absorber.
2. the current vortex vibration absorber according to claim 1 suitable for wind electricity blade, it is characterised in that: the upper fixation
Support (822) is equipped with the first U-shaped fixing seat (810), and wears corresponding screw rod (825) and nut (826).
3. the current vortex vibration absorber according to claim 1 suitable for wind electricity blade, it is characterised in that: the lower fixation
Support (818) end is equipped with welding block (817), welds 4 No. 2 shape memory alloy springs (7).
4. the current vortex vibration absorber according to claim 1 suitable for wind electricity blade, it is characterised in that: the shielding case
(814) 4 row's ball card slot (821) of inner wall uniform welding installs full advance ball (820), and lubricating oil is added and seals.
5. the current vortex vibration absorber according to claim 1 suitable for wind electricity blade, it is characterised in that: in external action
Under, the permanent magnet (819) and two blocks of current vortex plates can in 4 row's advance balls (820) along shielding case in metal spacing ring
It slides the position of restriction.
6. the current vortex vibration absorber according to claim 1 suitable for wind electricity blade, it is characterised in that: no external load effect
When, the permanent magnet (819) and two blocks of current vortex plates are in metastable state.
7. being suitable for the installation method of the current vortex vibration absorber of wind electricity blade, which is characterized in that the steps include:
Step 1: based on shielding case (814), being packed into ball (820) in the ball card slot (821) of shielding case inner wall, and fill
After entering lubricating oil, card slot both ends are sealed；Upper alloy stop collar (812) are welded in corresponding position, are packed into permanent magnet (819)
Afterwards, the alloy stop collar (813) under the welding of corresponding position；
Step 2: the one No. 1 shape memory alloy spring (816) one end is welded on to the interior table of the lower hold-down support (818)
Face, the other end weld the side of current vortex plate (815), in one end of lower current vortex plate (815) other side welding cable wire (2)；
Step 3: the 2nd No. 1 shape memory alloy spring (823) one end is welded on to the interior table of the upper hold-down support (822)
Face, the other end are burn-on on current vortex plate (811) side；
Step 4: cooperating No. 2 antifriction rubber transparent sleeves (824) to sequentially pass through lower conjunction the other end of the cable wire connected (2)
Golden stop collar (813), upper alloy stop collar (812), powers on vortex board (811), the 2nd No. 1 shape memory conjunction at permanent magnet (819)
After golden spring (823), upper hold-down support (822), No. 1 antifriction rubber sleeve 4 is cooperated to pass through R steel bar pull ring at 2 end of cable wire
(1), with reinforcing bar button (3) firm anchoring；
Step 5: the upper hold-down support (822) connected and lower hold-down support (818) are welded with shielding case (814) both ends respectively
It connects；
Step 6: the R steel bar pull ring (1) being connected on cable wire (2) is pasted onto table in wind power blade tip lightening with epoxy adhesive
At face (9)；
Step 7: 4 No. 2 marmems are welded on the bottom welding block (817) of mounted lower hold-down support (818)
Spring (7) is respectively cooperating with No. 2 shape memory alloy spring connectors (10) even in No. 2 shape memory alloy spring (7) other ends
R steel bar pull ring (1) is connect, with the firm anchoring of reinforcing bar latch closure 3, and No. 2 marmem power alloy springs (7) are tensed, by 4
R steel bar pull ring 1, at the inner surface (9) being pasted onto the middle part of wind electricity blade with epoxy adhesive；
Step 8: second U-shaped support being connected by screw rod (519) and nut (516) in the lower end of selected small-sized viscous damper 5
(517), wind electricity blade inner surface (9) and by the bottom plate (518) of the second U-shaped support (517) with epoxy adhesive are pasted onto,
Upper end is connected to the upper reserved U-shaped support of the first support (810) of upper hold-down support (822) by screw rod (825) and nut (826)
On, complete the assembling of entire vibration absorber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811127092.4A CN109114159B (en) | 2018-09-27 | 2018-09-27 | Eddy current vibration damper suitable for wind power blade and mounting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811127092.4A CN109114159B (en) | 2018-09-27 | 2018-09-27 | Eddy current vibration damper suitable for wind power blade and mounting method |
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| CN110043426A (en) * | 2019-05-28 | 2019-07-23 | 湖南大学 | For inhibiting the passive type eddy current damper of blade of wind-driven generator flutter unstability |
| CN113803394A (en) * | 2021-09-16 | 2021-12-17 | 北京航空航天大学 | Isolator based on eddy current effect and method |
| CN114263658A (en) * | 2021-12-23 | 2022-04-01 | 西南石油大学 | Vortex-induced vibration suppression device and method combining magnetic sliding and flow guiding rotation |
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