CN205681352U - A kind of fluid coupling excitation energy accumulator for blade of wind-driven generator monitoring system power supply - Google Patents
A kind of fluid coupling excitation energy accumulator for blade of wind-driven generator monitoring system power supply Download PDFInfo
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- CN205681352U CN205681352U CN201620626278.4U CN201620626278U CN205681352U CN 205681352 U CN205681352 U CN 205681352U CN 201620626278 U CN201620626278 U CN 201620626278U CN 205681352 U CN205681352 U CN 205681352U
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- current divider
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 230000005284 excitation Effects 0.000 title claims abstract description 8
- 230000008878 coupling Effects 0.000 title claims abstract description 6
- 238000010168 coupling process Methods 0.000 title claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 6
- 239000012530 fluid Substances 0.000 title claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 12
- 238000009826 distribution Methods 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
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- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 240000002853 Nelumbo nucifera Species 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
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- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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Abstract
The utility model relates to a kind of fluid coupling excitation energy accumulator for blade of wind-driven generator monitoring system power supply, belongs to field of piezoelectric generation.Inside and outside barrel two ends are constituted working chamber by installing left and right wallboard and are filled with liquid；Being provided with current divider inside outer tube wall, left and right wallboard being respectively equipped with left and right plug-flow plate, inner core outer rim pillow block two ends constitute generator unit equipped with by piezoelectric vibrator and limitting casing；Piezoelectric vibrator is formed by metal substrate and piezoelectric chip bonding, and piezoelectric chip is installed near limitting casing, and current divider is positioned between two generator units and piezoelectric vibrator is near current divider；The piezoelectric vibrator that the left and right plug-flow plate being symmetrically installed is adjacent in generator unit is near installation.Advantage characteristic: utilize current divider and plug-flow plate change liquid flowing state to realize that piezoelectric vibrator encourages, without rigid contact impact, without electromagnetic interference, without the fixing support in the external world, is particularly suited for the occasion without electromagnetic interference for the requirement；Piezoelectric chip is subjected only to the action of compressive stress of range-controllable, and generating capacity is strong, reliability is high.
Description
Technical field
The utility model belongs to new forms of energy and technical field of power generation, is specifically related to a kind of for blade of wind-driven generator monitoring
The fluid coupling excitation energy accumulator of system power supply.
Background technology
Blade is that wind-driven generator receives wind energy the critical component converting thereof into kinetic energy, determines generator reliability
And service life.Blade of wind-driven generator is usually operated under relatively rugged environment, and self structure yardstick, weight and work carry
Lotuses etc. are all very big, in addition to because of by irresistible natural calamity damages such as thunderbolt and earthquakes, and spontaneous corrosion, abrasion and fatigue stress etc.
Cause damage also inevitable.Practice have shown that, 1/3rd being had an accident in wind-driven generator running are because of blade
Caused by damage, therefore blade health monitoring is imperative.Increasing day by day with fan blade length and blower fan total number
Add, rely on human at periodic intervals's inspection the method safeguarded cannot meet Production requirement in the past.Therefore, there has been proposed multiple
The blade of wind-driven generator health status monitoring method of form, is that the monitoring in real time of the states such as blade cracks, abrasion and deformation carries
Effective means are supplied.It but the powerup issue of existing sensing and monitoring system is not yet well solved at present, therefore is difficult to big model
Exclosure popularization and application, because sensing and monitoring system needs to be arranged on blade and rotates with blade, it is impossible to provide electricity by wire
Can, and when using battery to power, need to often shut down replacing battery, therefore there has been proposed multiple piezoelectric generator is monitoring system
Power supply.The feature of existing major part rotary piezoelectric generator has to be by bearing block or bearing cap etc. " fixture " and axle class
Relatively rotating between " rotary body " realizes effective excitation of piezoelectric vibrator, it is impossible to the rotary body generating for " supporting without fixing " needs
Ask；Additionally, the piezoelectric generator of existing blade of wind-driven generator monitoring system mostly uses magnetic couple to realize that noncontact swashs
Encouraging, electromagnetic interference can reduce accuracy and the real-time of wireless monitor signal, and even resulting in monitoring system when serious cannot be just
Often work.
Content of the invention
For the problem existing for existing blade of wind-driven generator monitoring system power supply aspect, the utility model proposes one
Fluid coupling excitation energy accumulator for blade of wind-driven generator monitoring system power supply.The embodiment that the utility model uses
It is: inner core barrel two ends are provided with left and right wallboard by screw respectively that two ends, urceolus barrel left and right pass through screw and left and right respectively
Wallboard is connected, and left and right wallboard and inner/outer tube constitute working chamber, are filled with low-viscosity (mobile) liquid in working chamber；Inner core is enclosed within main shaft,
Spindle nose is fixed with pressing plate through screw, and pressing plate is pressed against on right wallboard；It is provided with N number of current divider in uniform way inside urceolus barrel,
It is provided with N number of left plug-flow plate on left wall plate in uniform way, be provided with N number of right plug-flow plate, inner core barrel outer rim pillow block in uniform way on right wallboard
Two ends are all provided with 2N generator unit, N=1～5 in uniform way by screw；Generator unit is by a piezoelectric vibrator and a limit
Position frame is constituted, and piezoelectric vibrator is formed by metal substrate and piezoelectric chip bonding；Piezoelectric chip length and width is respectively smaller than spacing
The length and width of frame cavity, metal substrate length and width is respectively greater than the length and width of limitting casing cavity, piezoelectric chip
Install near limitting casing and be positioned at limitting casing cavity；It is positioned at two of same shaft section at inner core barrel outer rim pillow block two ends
Generator unit is symmetrically installed, and current divider is positioned between two generator units being symmetrically installed, and piezoelectric vibrator is pacified near current divider
Dress；There is the diversion angle of 60～120 degree between two flow distribution plates of current divider；There is left plug-flow angle between left plug-flow plate and left wall plate,
There is right plug-flow angle between right plug-flow plate and right wallboard, left and right plug-flow angle is equal and its span is 30～60 degree, left and right plug-flow
Plate is symmetrically installed, and the angle between the left and right plug-flow plate current divider circumferentially adjacent with it is 180/N degree；Left and right plug-flow plate is respectively
Piezoelectric vibrator in the generator unit being adjacent is near installation.
In the utility model, for improving reliability and the generating capacity of piezoelectric vibrator, the confined planes of limitting casing is that circular arc is bent
Face and its rational radius of curvature be:Wherein, α=hm/hpFor thickness
Ratio, hmAnd hpIt is respectively the thickness of metal substrate and piezoelectric chip；Piezoelectric chip is the thick PZT4 of 0.2mm～0.3mm, Metal Substrate
Plate is beryllium-bronze, and thickness is α=1～2.5 than scope, generated energy now compared with big, i.e. energy comparison is big；Energy ratio refers to each
Different-thickness is than the ratio of electric energy produced by the deformation of piezoelectric vibrator first order buckling and maximum therein.
In the course of work, spindle nose flange is arranged on blade of wind-driven generator or rotary shaft through screw and revolves therewith
Turning, piezoelectric vibrator, current divider and left and right plug-flow plate are with main axis；Liquid in working chamber is under himself inertia force effect
Being in bottom working chamber, when current divider, left and right plug-flow plate do not proceed to liquid internal, liquid is in relative static conditions.
It when the piezoelectric vibrator adjacent with both sides around when current divider proceeds to liquid internal simultaneously, is in before current divider
Liquid, because of two lateral movements to the left and right force piezoelectric vibrator to the direction flexural deformation away from current divider by current divider effect, is treated
When described piezoelectric vibrator and current divider produce liquid, piezoelectric vibrator resets under the effect of himself elastic force and centrifugal force.
It when left and right plug-flow plate and adj acent piezoelectric oscillator thereof proceed to liquid internal simultaneously, is in the liquid before the plug-flow plate of left and right
Body flows in the middle part of working chamber because of the effect by left and right plug-flow plate, thus forces piezoelectric vibrator to push away to a left side close away from it
Stream plate or the direction flexural deformation of right plug-flow plate, when described piezoelectric vibrator, left and right flow distribution plate produce liquid, described piezoelectric vibrator
Reset under the effect of himself elastic force and centrifugal force.When piezoelectric vibrator alternately proceeds to liquid, produces liquid, just produce
Continuous print flexural deformation, thus convert mechanical energy into electric energy.
When piezoelectric vibrator liquid body effect occurs bigger, it is spacing that the metal substrate of piezoelectric vibrator will bear against at limitting casing
On face, thus piezoelectric chip is avoided to damage because deformation is excessive；Because the confined planes of limitting casing is circular arc camber, each point radius of curvature
Equal, when metal substrate abuts on spacing curved surface completely, on piezoelectric chip, stress and the generated energy of each point are equal, thus effectively
Improve the generating capacity of piezoelectric vibrator；When the metal substrate of piezoelectric vibrator in the utility model abuts in limitting casing completely
On spacing curved surface and when stress suffered by piezoelectric chip is identical with stress suffered by the piezoelectric chip of conventional cantilever beam structure piezoelectric vibrator,
The electric energy that in the utility model, piezoelectric vibrator is obtained is 4 times of conventional cantilever beam piezoelectric vibrator generated energy.
Advantage and characteristic: 1) utilize current divider and plug-flow plate change liquid flowing state to realize piezoelectric vibrator vibrational excitation,
It without rigid contact impact, without electromagnetic interference, is particularly suited for the wireless sensing monitoring system without electromagnetic interference for the requirement；2) liquid is utilized
Inertia force and mobility realize rotating self-excitation generating, it is not necessary to extraneous fixing supports, and is placed in blade or its rotating shaft；3) piezo crystals
Piece is operated under compressive stress state and maximum stress is controlled, and reliability is high, generating capacity is strong.
Brief description
Fig. 1 is the structural representation of energy accumulator in one preferred embodiment of the utility model；
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is the structural representation of urceolus in one preferred embodiment of the utility model；
Fig. 4 is the structural representation of left wall plate in one preferred embodiment of the utility model；
Fig. 5 is the B-B sectional view of Fig. 3；
Fig. 6 is the C-C sectional view of Fig. 4；
Fig. 7 is the structural representation of limitting casing in one preferred embodiment of the utility model；
Fig. 8 is the left view of Fig. 7；
Fig. 9 be piezoelectric vibrator energy than with thickness than relation curve.
Detailed description of the invention
The barrel e1 two ends of inner core e are provided with left wall plate c and right wallboard a, a left side of the barrel b1 of urceolus b by screw respectively
Right two ends are connected with left wall plate c and right wallboard a by screw respectively, and left wall plate c, right wallboard a, urceolus b and inner core e collectively form
Working chamber K, is filled with low-viscosity (mobile) liquid in working chamber K；Inner core e is enclosed within main shaft f, and main shaft f end is fixed with pressing plate through screw
H, pressing plate h are pressed against on right wallboard a；The inner side of the barrel b1 of urceolus b is provided with N number of current divider b2 in uniform way, uniform on left wall plate c
Be provided with on N number of left plug-flow plate c1, right wallboard a and be provided with N number of right plug-flow plate a1, the pillow block of the barrel e1 outer rim of inner core e in uniform way
E2 two ends are all provided with 2N generator unit I, N=1～5 in uniform way by screw；Generator unit I by a piezoelectric vibrator g and
One limitting casing d is constituted, and piezoelectric vibrator g is formed by metal substrate g1 and piezoelectric chip g2 bonding；The length of piezoelectric chip g2 and
Width is respectively smaller than the length and width of the cavity d1 of limitting casing d, and the length and width of metal substrate g1 is respectively greater than limitting casing d
The length and width of cavity d2, piezoelectric chip g2 installs near limitting casing d and is positioned at the cavity d2 of limitting casing d；It is positioned at
Two generator unit I in the same shaft section at the pillow block e2 two ends of the barrel e1 outer rim of cylinder e are symmetrically installed, and current divider b2 is positioned at
Between the generator unit I that two are symmetrically installed, and piezoelectric vibrator g installs near current divider b2；Two flow distribution plates of current divider b2
Between there is certain diversion angle, the span of diversion angle is Q1=60～120 degree；Exist between left plug-flow plate c1 and left wall plate c
, there is certain right plug-flow angle in certain left plug-flow angle, left plug-flow angle and right plug-flow angle are equal between right plug-flow plate a1 and right wallboard a
And its span is Q2=30～60 degree, left plug-flow plate c1 is symmetrically installed with right plug-flow plate a1, and said two is symmetrically installed
Angle between left plug-flow plate c1 and the right plug-flow plate a1 current divider g2 circumferentially adjacent with it is Q3=180/N degree；Left plug-flow
Piezoelectric vibrator g in the generator unit I that plate c1 and right plug-flow plate a1 is adjacent respectively is near installation.
In the utility model, for improving reliability and the generating capacity of piezoelectric vibrator g, the confined planes d2 of limitting casing d is circle
Arc surface and its radius of curvature be:Wherein, α=hm/hpFor thickness ratio,
hmAnd hpIt is respectively the thickness of metal substrate g1 and piezoelectric chip g2；Piezoelectric chip g2 is the thick PZT4 of 0.2mm～0.3mm, metal
Substrate g1 is beryllium-bronze and thickness is 1～2.5 than scope, generated energy now compared with big, i.e. energy comparison is big；Energy ratio refers to each
Different-thickness than the first order buckling produced electric energy of deformation of piezoelectric vibrator g and the ratio of maximum therein.
In the course of work, the flange of main shaft f end be arranged on blade of wind-driven generator or rotary shaft by screw and with
Rotation, piezoelectric vibrator g, current divider b2, left plug-flow plate c1 and right plug-flow plate a1 with main shaft f rotate；Liquid in working chamber K exists
It is in the bottom of working chamber K under himself inertia force effect, do not proceed to liquid at current divider d2, left plug-flow plate c1 and right plug-flow plate a1
During internal portion, liquid is in relative static conditions.
It when the piezoelectric vibrator g adjacent with both sides around as current divider d2 proceeds to liquid internal simultaneously, is in current divider d2
Liquid above is because of two lateral movements to the left and right force piezoelectric vibrator g to the direction away from current divider d2 by current divider d2 effect
Flexural deformation, when described piezoelectric vibrator g and current divider d2 produces liquid, piezoelectric vibrator g is at himself elastic force and centrifugal force
Effect under reset.
It when left plug-flow plate c1, right plug-flow plate a1 and adj acent piezoelectric oscillator g thereof proceed to liquid internal simultaneously, is in left plug-flow
Liquid before plate c1 and right plug-flow plate a1 flows to the middle part of working chamber K because of the effect by left plug-flow plate c1 or right plug-flow plate a1
Dynamic, thus force piezoelectric vibrator g to the direction flexural deformation of left plug-flow plate c1 or the right plug-flow plate a1 close away from it, treat institute
State piezoelectric vibrator g, left shunt plate c1 and right flow distribution plate a1 when producing liquid, described piezoelectric vibrator g himself elastic force and from
Reset under the effect of mental and physical efforts.When piezoelectric vibrator g alternately proceeds to liquid, produces liquid, just produce continuous print flexural deformation, from
And convert mechanical energy into electric energy.
When piezoelectric vibrator g liquid body effect occurs bigger, the metal substrate g1 of piezoelectric vibrator g will bear against at limitting casing d
Confined planes d2 on, thus avoid piezoelectric chip g2 excessive and damage because deformation；Because of the confined planes of limitting casing d be circular arc camber,
Each point radius of curvature is equal, and metal substrate g1 abuts in the stress of each point on piezoelectric chip g2 when on spacing curved surface d2 completely and sends out
Electricity is equal, thus is effectively improved the generating capacity of piezoelectric vibrator g；Metal Substrate as piezoelectric vibrator g in the utility model
Plate abuts on the spacing curved surface d2 of limitting casing d and stress suffered by piezoelectric chip g2 and conventional cantilever beam structure piezoelectric vibrator completely
Piezoelectric chip suffered by stress identical when, the electric energy that in the utility model, piezoelectric vibrator g is obtained is that conventional cantilever beam piezoelectricity shakes
4 times of sub-generated energy.
Claims (1)
1. the fluid coupling excitation energy accumulator for blade of wind-driven generator monitoring system power supply, it is characterised in that: inner core
Barrel two ends are separately installed with left and right wallboard, and urceolus barrel two ends are connected with left and right wallboard respectively, left and right wallboard and inner/outer tube structure
Become working chamber, make chamber is filled with low-viscosity (mobile) liquid；Inner core is enclosed within main shaft, and spindle nose is fixed with pressing plate, and pressing plate is pressed against
On right wallboard；Being provided with current divider inside urceolus barrel, left wall plate is provided with left plug-flow plate, right wallboard is provided with right plug-flow plate, interior
Cylinder barrel outer rim pillow block two ends are equipped with generator unit；Generator unit is made up of a piezoelectric vibrator and a limitting casing, piezoelectricity
Oscillator is formed by metal substrate and piezoelectric chip bonding；Piezoelectric chip length and width be respectively smaller than limitting casing cavity length and
Width, metal substrate length and width is respectively greater than the length and width of limitting casing cavity, and piezoelectric chip is installed near limitting casing
And it is positioned at limitting casing cavity；The symmetrical peace of two generator units of the same shaft section being positioned at inner core barrel outer rim pillow block two ends
Dress, current divider is positioned between two generator units being symmetrically installed, and piezoelectric vibrator is installed near current divider.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626278.4U CN205681352U (en) | 2016-06-15 | 2016-06-15 | A kind of fluid coupling excitation energy accumulator for blade of wind-driven generator monitoring system power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626278.4U CN205681352U (en) | 2016-06-15 | 2016-06-15 | A kind of fluid coupling excitation energy accumulator for blade of wind-driven generator monitoring system power supply |
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| CN205681352U true CN205681352U (en) | 2016-11-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317514A (en) * | 2017-08-17 | 2017-11-03 | 浙江师范大学 | A kind of Combined press electric generator |
| CN107436364A (en) * | 2017-08-17 | 2017-12-05 | 浙江师范大学 | A kind of flag pendulum-type wind direction and wind velocity measuring instrument |
-
2016
- 2016-06-15 CN CN201620626278.4U patent/CN205681352U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317514A (en) * | 2017-08-17 | 2017-11-03 | 浙江师范大学 | A kind of Combined press electric generator |
| CN107436364A (en) * | 2017-08-17 | 2017-12-05 | 浙江师范大学 | A kind of flag pendulum-type wind direction and wind velocity measuring instrument |
| CN107436364B (en) * | 2017-08-17 | 2019-10-01 | 浙江师范大学 | A kind of flag pendulum-type wind direction and wind velocity measuring instrument |
| CN107317514B (en) * | 2017-08-17 | 2023-06-02 | 浙江师范大学 | Combined piezoelectric generator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20170615 |