CN106014887B - A kind of suspension self-excitation runner piezoelectric beam energy accumulator - Google Patents
A kind of suspension self-excitation runner piezoelectric beam energy accumulator Download PDFInfo
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- CN106014887B CN106014887B CN201610459387.6A CN201610459387A CN106014887B CN 106014887 B CN106014887 B CN 106014887B CN 201610459387 A CN201610459387 A CN 201610459387A CN 106014887 B CN106014887 B CN 106014887B
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- end cap
- driver
- disk body
- piezoelectric vibrator
- piezoelectric
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- 239000000725 suspension Substances 0.000 title claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 229910000906 Bronze Inorganic materials 0.000 claims description 5
- 239000010974 bronze Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002964 excitative effect Effects 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 13
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008439 repair process Effects 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
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G3/00—Other motors, e.g. gravity or inertia motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention relates to a kind of suspension self-excitation runner piezoelectric beam energy accumulators, belong to field of piezoelectric generation.Left end cap, disk body, side plate and right end cap are sequentially connected and are sleeved in cantilevered axle；The cantilever beam of metal substrate forms piezoelectric vibrator be bonded piezoelectric chip between left end cap and disk body and between side plate and right end cap, and piezoelectric vibrator is equipped with excited magnet；Equipped with driver in the slideway that cantilevered axle and disk body ring cavity are formed, exciting magnet is embedded with embedded with ball, both sides in driver in outer rim；Driver both sides piezoelectric vibrator quantity is equal and is symmetrically installed；The side adjacent with piezoelectric vibrator is designed with shape scale and the identical confined planes and deep gouge of quantity on left end cap, disk body, side plate and right end cap.Advantage characteristic：It is small without rotatory force suffered by fixed support, simple in structure and driver；Piezoelectric vibrator it is rational in infrastructure and deform after each point stress it is identical, generated energy is big, reliability is high, effective band is wide；Standarized component can be used as to be used for cantilever shaft gear and the coaxial occasion of multi-gear.
Description
Technical field
The invention belongs to new energy and technical field of power generation, and in particular to a kind of suspension self-excitation runner piezoelectric beam energy accumulator,
The health monitoring systems power supply of support rotary structure is relatively fixed for the inconvenient installation such as gear of wind driven generator axis.
Background technology
Gear-box is the critical component of wind power generating set, and function is transmission power.When wind-driven generator runs well,
The rotating speed of wind wheel is relatively low, causes generator efficiency relatively low, therefore need to improve generating capacity and efficiency by gear-box speedup.Due to
Wind turbine gearbox is operated under speed change varying load environment, therefore is easily broken down；In addition, repair is tired when wind turbine gearbox breaks down
Difficult and of high cost, wind turbine gearbox operation and maintenance cost may be up to the 30% of overall operation cost.Therefore, there has been proposed
The gear-box real-time monitoring system for state and method of diversified forms, to obtain each relevant parameter of gear-box, in time hair in real time
It now and solves the problems, such as, so as to reduce equipment damage degree and maintenance cost.At present, the element of wind turbine gearbox monitoring includes tooth
All various aspects such as load, vibration and the temperature of moving components such as wheel, bearing and wheel shaft.
For the monitoring of gear and axis, ideal method is that all kinds of sensing and monitoring systems are mounted on gear or axis
Or installed close to gear or axis, it is monitored so as to fulfill the direct-on-line of its operating status；But this monitoring scheme is because that can not be to pass
Sense monitoring system provides reliable, sufficient supply of electric power and is difficult to promote and apply, and reason is：1. gear and axis are in rotation
Motion state can not pass through cable power supply；2. as used battery powered, need to often be replaced due to battery is limited, when
Battery capacity is insufficient and while not replacing in time will be unable to realize effective monitoring；3. cantilevered axle and its end tooth far from bearing block
When wheel and multiple gears are coaxial, all microminiature hair can not be constructed by rotating relative motion between gear or axis and securing supports
Motor.It is limited to the monitoring system energy supply problem of wind turbine gearbox gear, axis and bearing etc., can not also realizes in practice at present
Real time on-line monitoring truly.
Invention content
The problems of in terms of for wind turbine gearbox monitoring system power supply, the present invention proposes a kind of suspension self-excitation runner
Piezoelectric beam energy accumulator.The embodiment that the present invention uses is：Left end cap, disk body, side plate and right end cap pass sequentially through screw and are connected
It connects, left end cap, disk body and side plate are sleeved in the cantilevered axle of gear, right end cap and cantilever axis connection；Cantilevered axle and disk body and side plate
Center between be equipped with sealing ring；Metal substrate is crimped between left end cap and disk body and between side plate and right end cap,
Metal cantilever beams on metal substrate form piezoelectric vibrator be bonded piezoelectric chip；Piezoelectric vibrator free end, which is equipped with, is excited
Magnet, excited magnet is close to disk body or side plate installation and is placed in the rectangle guide groove of disk body side or side plate side；Cantilevered axle
Form slideway with disk body ring cavity, in slideway filled with lubricating oil, the driver of nonferromugnetic material is installed, outer rim in driver
On be inlaid with and be symmetrically inlaid with exciting magnet for the ball that is in rolling contact, both sides；Driver both sides piezoelectric vibrator quantity phase
Deng and be symmetrically installed；When driver side piezoelectric vibrator and exciting magnet quantity are both greater than 1, two adjacent piezoelectric vibrator symmetrical centres
It cannot integral multiple each other between the angle between the adjacent exciting magnet center of angle and two and the disk body line of centres between line；Driver
The pole configuration direction of two adjacent excited magnets is identical on the circumference of the same side, the opposite sex of the coaxial excited magnet in driver both sides
Magnetic pole is opposite to be installed；The pole configuration direction of two adjacent exciting magnets is on the contrary, driver two on the circumference of driver the same side
The opposite pole of side coaxial excitation magnet is opposite to be installed, to ensure driver not by responsive to axial force；Left end cap, disk body, side plate
And the side adjacent with piezoelectric vibrator is designed with shape, scale and the identical confined planes and deep gouge of quantity on right end cap；Deep gouge is used
In accommodating piezoelectric chip, planar dimension is more than piezoelectric chip, less than metal cantilever beams；Confined planes are used to limit piezoelectric vibrator
Deflection, confined planes depend on metal substrate and piezoelectric chip parameter for arc surface and its rational radius of curvature.
In the present invention, to improve piezoelectric vibrator generating capacity and reliability, piezoelectric chip is PZT4, the gold of 0.2~0.3mm
Category substrate is the ratio between beryllium-bronze, the thickness of metal substrate and piezoelectric chip ranging from 1~2.5, at this time the power generation energy of piezoelectric vibrator
Power compared with it is strong, energy ratio is larger；Energy ratio refer to variant thickness ratio piezoelectric vibrator first order buckling deformation caused by electric energy with
Maximum value therein it is bigger；For the piezoelectric vibrator that the present invention is formed using PZT4 and beryllium-bronze substrate, the conjunction of confined planes
Managing radius of curvature isWherein α=hm/hpFor thickness ratio, hmAnd hpRespectively
Metal substrate and piezoelectric chip thickness.
In the course of work, gear cantilevered axle drives left end cap, disk body, side plate, right end cap, piezoelectric vibrator and excited magnet to turn
It is dynamic；In disk body rotation process, driver under the action of its inertia force be in slideway bottom, so as to make exciting magnet and by
Relative motion is generated between excitatory iron.When piezoelectric vibrator and excited magnet are gone to it is close with exciting magnet when, excited magnet with swash
Axial force between field core gradually increases, and piezoelectric vibrator generates axial bending deformation；When excited magnet and exciting magnet
Exciting force maximum, deflection when center is overlapped suffered by piezoelectric vibrator is maximum, and metal cantilever beams will be sticked on confined planes completely；
Hereafter, the deflection of piezoelectric vibrator is gradually reduced with the further rotation of disk body and is gradually brought to original state；It is above-mentioned
Be gradually distance from after excited magnet and exciting magnet are close to each other again during, piezoelectric vibrator completes primary power generation.
Advantage and characteristic：The present invention realizes the relative motion between runner using the inertia force of driver and piezoelectricity is encouraged to shake
Sub- axial bending is small without rotatory force suffered by the fixed support in the external world, simple in structure and driver；Piezoelectric vibrator deflection is by limiting
Radius surface determines, deform after each point stress it is identical, therefore generated energy is big, reliability is high, effective band is wide；Standarized component can be used as to use
In cantilever shaft gear and the coaxial occasion of multi-gear, the gear on-line monitoring of real meaning is realized.
Description of the drawings
Fig. 1 is the structure diagram of energy accumulator in a preferred embodiment of the present invention；
The A-A sectional views of Fig. 2 Fig. 1；
Fig. 3 is the structure diagram after runner is combined with side plate in a preferred embodiment of the present invention；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the structure diagram of right end cap in a preferred embodiment of the present invention；
Fig. 6 is the left view of Fig. 5；
Fig. 7 is piezoelectric vibrator and the structure diagram after excited magnet assembling in a preferred embodiment of the present invention；
Fig. 8 is the ratio between piezoelectric vibrator generated energy and thickness ratio relation curve in a preferred embodiment of the present invention.
Specific embodiment
Left end cap b, disk body a, side plate j and right end cap c pass sequentially through screw and are connected, left end cap b, disk body a and side plate j sets
On the cantilevered axle f of gear e, right end cap c is connect by screw with cantilevered axle f；The centre bore a2 of cantilevered axle f and disk body a and side
Sealing ring o is equipped between the centre bore j2 of plate j；It is crimped between left end cap b and disk body a and between side plate j and right end cap c
There is a metal substrate h1, the metal cantilever beams h11 and be bonded piezoelectric chip h2 on metal substrate h1 form piezoelectric vibrator h；Pressure
Electric tachometer indicator h free ends are equipped with excited magnet g through screw, and excited magnet g is close to disk body a or side plate j installations and is placed in disk body a sides
In the rectangle guide groove a1 in face or in the rectangle guide groove j1 of side plate j sides；The ring cavity a3 of cantilevered axle f and disk body a forms slideway
Lubricating oil, the driver d for being equipped with nonferromugnetic material are filled in D, slideway D, is inlaid in the inner edge of driver d and outer rim
Exciting magnet i is symmetrically inlaid with for the ball k that is in rolling contact, both sides；The quantity phase of the piezoelectric vibrator h of driver d both sides
Deng and be symmetrically installed relative to driver d；When the quantity of driver d sides piezoelectric vibrator h and exciting magnet i is both greater than 1, two-phase
Between the adjacent exciting magnet i centers of angle Q1 and two and disk body a centre of gyration lines between the symmetrical center line of adjacent piezoelectric vibrator h
It cannot integral multiple each other between angle Q2；The pole configuration direction of two adjacent excited magnet g on the circumference of driver d the same sides
Identical, the opposite pole of the coaxial excited magnet g in driver d both sides is opposite to be installed；Adjacent two on the circumference of driver d the same sides
The pole configuration direction of exciting magnet i is on the contrary, the opposite pole of driver d both sides coaxial excitation magnet i is installed relatively, to ensure
Driver d is not by responsive to axial force；The side adjacent with piezoelectric vibrator h is all set on left end cap b, disk body a, side plate j and right end cap c
There are shape, scale and quantity identical confined planes M and deep gouge C；For accommodating piezoelectric chip h2, planar dimension is more than deep gouge C
Piezoelectric chip h2, less than metal cantilever beams h11；Confined planes M is used to limit the deflection of piezoelectric vibrator h, and confined planes M is arc surface
And its rational radius of curvature depends on the parameter of metal substrate h1 and piezoelectric chip h2.
In the present invention, to improve the generating capacity and reliability of piezoelectric vibrator h, piezoelectric chip is 0.2~0.3mm's
PZT4, metal substrate are that the ratio between beryllium-bronze, the thickness of metal substrate h1 and piezoelectric chip h2 is 1~2.5, at this time piezoelectric vibrator h
Generating capacity compared with it is strong, energy ratio is larger；Energy ratio refers to produced by the piezoelectric vibrator h first order bucklings deformation of variant thickness ratio
Electric energy and maximum value therein it is bigger；For the piezoelectric vibrator that the present invention is formed using PZT4 and beryllium-bronze substrate, limit
The reasonable radius of curvature of plane M isWherein α=hm/hpFor thickness ratio, hm
And hpThe respectively thickness of metal substrate h1 and piezoelectric chip h2.
In the course of work, the cantilevered axle f of gear e drive left end cap b, disk body a, side plate j, right end cap c, piezoelectric vibrator h and
Excited magnet g is rotated；In disk body a rotation processes, driver d is in the bottom of slideway D under the action of its inertia force, so as to
Make to generate relative motion between exciting magnet i and excited magnet g.When piezoelectric vibrator h and excited magnet g are gone to and exciting magnet i
When close, the axial force between excited magnet g and exciting magnet i gradually increases, and piezoelectric vibrator h generates axial bending deformation；
Exciting force when excited magnet g is Chong Die with the center of exciting magnet i suffered by piezoelectric vibrator h is maximum, deflection is maximum, and metal hangs
Arm beam h11 will be completely sticked on confined planes M；Hereafter, the deflection of piezoelectric vibrator h with the further rotation of disk body a and by
It is decrescence small and be gradually brought to original state；The mistake being gradually distance from again after above-mentioned excited magnet g and exciting magnet i is close to each other
Cheng Zhong, piezoelectric vibrator h complete primary power generation.
Obviously, the present invention realizes the relative motion between disk body a using the inertia force of driver d and encourages piezoelectric vibrator h
Axial bending is small without rotatory force suffered by the fixed support in the external world, simple in structure and driver；The deflection of piezoelectric vibrator h is by limiting
The radius of plane M determines, deform after each point stress it is identical, therefore generated energy is big, reliability is high, effective band is wide；Available for cantilever
Shaft gear and the coaxial occasion of multi-gear, realize the gear of real meaning and the on-line monitoring of shafting.
Claims (1)
1. a kind of suspension self-excitation runner piezoelectric beam energy accumulator, it is characterised in that：Left end cap, disk body, side plate and right end cap lead to successively
It crosses screw to be connected, left end cap, disk body and side plate are sleeved in the cantilevered axle of gear, right end cap and cantilever axis connection；Cantilevered axle and disk
Sealing ring is equipped between body and the center of side plate；Gold is crimped between left end cap and disk body and between side plate and right end cap
Belong to substrate, the metal cantilever beams on metal substrate and be bonded piezoelectric chip composition piezoelectric vibrator；Pacify piezoelectric vibrator free end
Equipped with excited magnet, excited magnet is close to disk body or side plate installation and is placed in disk body or the rectangle guide groove of side plate side；It is outstanding
Arm axle forms slideway with disk body ring cavity, and lubricating oil is filled in slideway, is equipped with driver, rolling is inlaid in outer rim in driver
Pearl, both sides are symmetrically inlaid with exciting magnet；Driver both sides piezoelectric vibrator quantity is equal and is symmetrically installed；One side pressure of driver
When electric tachometer indicator and exciting magnet quantity are both greater than 1, angle and two adjacent actuators magnetic between two adjacent piezoelectric vibrator symmetrical center lines
It cannot integral multiple each other between angle between iron center and the disk body line of centres；On the circumference of driver the same side adjacent two by
The pole configuration direction of excitatory iron is identical, and the opposite pole of the coaxial excited magnet of driver both sides is opposite to be installed；Driver is same
The pole configuration direction of two adjacent exciting magnets is on the contrary, the opposite sex of the coaxial excitation magnet of driver both sides on the circumference of side
Magnetic pole is opposite to be installed；On left end cap, disk body, side plate and right end cap the side adjacent with piezoelectric vibrator be designed with shape, scale and
Quantity identical confined planes and deep gouge, deep gouge planar dimension are more than piezoelectric chip, less than metal cantilever beams, and confined planes are circular arc
Face；PZT4 that piezoelectric chip is 0.2~0.3mm, metal substrate are beryllium-bronze, the ratio between thickness of metal substrate and piezoelectric chip model
Enclose is 1~2.5；The reasonable radius of curvature of confined planes isWherein α=hm/
hpFor thickness ratio, hmAnd hpRespectively metal substrate and piezoelectric chip thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610459387.6A CN106014887B (en) | 2016-06-15 | 2016-06-15 | A kind of suspension self-excitation runner piezoelectric beam energy accumulator |
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| CN201610459387.6A CN106014887B (en) | 2016-06-15 | 2016-06-15 | A kind of suspension self-excitation runner piezoelectric beam energy accumulator |
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| CN106014887A CN106014887A (en) | 2016-10-12 |
| CN106014887B true CN106014887B (en) | 2018-07-03 |
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Families Citing this family (5)
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| CN107482868B (en) * | 2017-08-17 | 2023-05-26 | 浙江师范大学 | Magnetic coupling step-by-step excitation water flow generator |
| CN107359815B (en) * | 2017-08-17 | 2023-05-16 | 浙江师范大学 | Radial tension-compression excited rotary piezoelectric generator |
| CN107395051B (en) * | 2017-08-17 | 2023-05-16 | 浙江师范大学 | Generator for railway train bearing monitoring system |
| CN107332463B (en) * | 2017-08-17 | 2023-05-26 | 浙江师范大学 | Novel generator for train bearing monitoring system |
| CN112202361B (en) * | 2020-09-29 | 2022-11-01 | 长春工业大学 | Energy collecting device based on windmill toy |
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|---|---|---|---|---|
| CN102801356A (en) * | 2012-09-01 | 2012-11-28 | 浙江师范大学 | Magnetic force coupling axial excitation-based rotary disk type piezoelectric generator |
| CN103269181A (en) * | 2013-05-31 | 2013-08-28 | 浙江师范大学 | Suspending hammer self-excitation wheel type generator |
| CN103312215A (en) * | 2013-05-31 | 2013-09-18 | 浙江师范大学 | Shaft end overhanging-type piezoelectric beam generator based on clamp limit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06141563A (en) * | 1992-10-27 | 1994-05-20 | Seiko Instr Inc | High torque ultrasonic actuator |
| JP2006180589A (en) * | 2004-12-21 | 2006-07-06 | Canon Inc | Ultrasonic motor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801356A (en) * | 2012-09-01 | 2012-11-28 | 浙江师范大学 | Magnetic force coupling axial excitation-based rotary disk type piezoelectric generator |
| CN103269181A (en) * | 2013-05-31 | 2013-08-28 | 浙江师范大学 | Suspending hammer self-excitation wheel type generator |
| CN103312215A (en) * | 2013-05-31 | 2013-09-18 | 浙江师范大学 | Shaft end overhanging-type piezoelectric beam generator based on clamp limit |
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Effective date of registration: 20231009 Address after: B205, No.179 Chezhan Road, Liushi Town, Leqing City, Wenzhou City, Zhejiang Province, 325600 Patentee after: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd. Address before: 321004 688 Yingbin Road, Zhejiang, Jinhua, Zhejiang Normal University Patentee before: ZHEJIANG NORMAL University |