CN209117312U - A kind of piezoelectric pile actuator multi- scenarios method load test system - Google Patents
A kind of piezoelectric pile actuator multi- scenarios method load test system Download PDFInfo
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- CN209117312U CN209117312U CN201821562542.8U CN201821562542U CN209117312U CN 209117312 U CN209117312 U CN 209117312U CN 201821562542 U CN201821562542 U CN 201821562542U CN 209117312 U CN209117312 U CN 209117312U
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Abstract
The utility model discloses a kind of piezoelectric pile actuator multi- scenarios method load test system, DC power supply connects the voltage input end of piezoelectric pile actuator, including experiment container, and experiment container is equipped with condensation water jacket, and the setting of piezoelectric pile actuator is in experiment silicone oil；The top of the underrun spring base connection elastic component of adjusting screw, the top of piezoelectric pile actuator set gradually the first pressing plate, displacement piece, the second pressing plate and force snesor from bottom to up, and the top surface of force snesor connects the bottom end of elastic component by spring base；The top of displacement piece is equipped with the displacement sensor supported by second support；It further include single-chip microcontroller, single-chip microcontroller acquires the force signal value of the shift value of voltage signal values, current signal value, the displacement sensor output of DC power supply, force snesor output.The utility model effectively simulates the actual working environment of piezoelectric pile actuator in Engine Piezoelectric formula fuel injector, provides reference frame for the properties of product assessment and improvement of piezoelectric pile actuator.
Description
Technical field
The utility model belongs to marine engine fuel injector technical field, and in particular to one kind is for piezoelectric pile in fuel injector
Actuator closes Performance Test System off field in thermo-electrically-couple of force.
Background technique
High-pressure common rail fuel injection technic is diesel engine a new generation fuel injection technic, is current reduction engine fuel consumption,
Reduce that diesel emission is main, most widely used technological means, it has also become the significant technology of advanced diesel engine.With row
Increasingly harsh and increasingly raising of the people to fuel economy requirement of regulation is put, high-pressure common rail spraying technique must satisfy higher
Spray the new demand of pressure and the more number injections of every circulation.
Based on the piezoelectric type spraying technique of piezoelectric material inverse piezoelectric effect as emerging Drive Control Technique, with electromagnetic type
Fuel injector is compared, and is had the advantages, especially its faster dynamic response such as big driving force, fast response time, low in energy consumption, is improved
Flexible and changeable high pressure fuel oil injection has been better achieved in the stability and reliability of spraying system.For this purpose, Germany BOSCH,
The companies such as Siemens VDO and Japan DENSO successively put forth effort to develop the piezoelectric fuel injector based on piezo-electric crystal driving, facts proved that,
Piezoelectric fuel injector is the technology leap in high-pressure common rail spraying technique field, is to realize electric control fuel system high pressure multi-injection
Key, it has also become the new developing direction of high-pressure common rail fuel injection technic and research hotspot.So far, China not yet at
The piezoelectric fuel injector product of type, and the research in terms of piezoelectric fuel injector also just starts to walk, it is also necessary in basic theory
With arduous exploration is carried out in terms of application technology two.
Piezoelectric crystal stack applied to diesel engine electric-controlled oil ejector piles up to be substantially distinguished from operating condition and performance requirement
Other application field.To obtain big displacement and high response speed, and realize that fuel injection pulsewidth and oil spout frequency are adjusted with operating condition, piezoelectricity
Crystal is stacked to be become in impulse electric field in strong；Under the excitation of high intense pulsed electric field, due to piezo-electric crystal stack Self-heating phenomenon and
Fuel oil heat transfer effect, stacking temperature can vary widely at work；To adapt to different rail pressures, the load that piezo-electric crystal stacks
Lotus can also occur to change accordingly.Therefore, in actual operation, the piezo-electric crystal in piezoelectric fuel injector is stacked in varying load
In thermo-electrically-power yard of (600bar~2000bar), alternating temperature (0 DEG C~125 DEG C) and strong changed electric field (> 1.5kV/mm),
And its precise and stable high frequency dynamic output characteristic is the important guarantee of piezoelectric fuel injector performance, is based on this, it would be highly desirable to fuel injector
Middle piezoelectric pile actuator is accurately tested in placement property, response characteristic and the power output that thermo-electrically-power multiplexing is made off field.
Summary of the invention:
In order to overcome the defect of above-mentioned background technique, the utility model provides a kind of piezoelectric pile actuator multi- scenarios method load
Test macro, being capable of effective more workplaces of thermo-electrically-power locating for simulation piezoelectric pile actuator.
In order to solve the above-mentioned technical problem the used technical solution of the utility model are as follows:
A kind of piezoelectric pile actuator multi- scenarios method load test system, the voltage that DC power supply connects piezoelectric pile actuator are defeated
Enter end, including experiment container, experiment container is equipped with condensation water jacket, and for holding experiment silicone oil, piezoelectric pile is held for condensation water jacket centre
The setting of row device condenses the gap being equipped between water jacket and experiment container for injecting condensed water in experiment silicone oil；It further include leading to
The elastic component of first support setting is crossed, first support upper end is equipped with the threaded hole coaxial with piezoelectric pile actuator, and adjusting screw is set
It sets in threaded hole, the top of the underrun spring base connection elastic component of adjusting screw, the top of piezoelectric pile actuator is under
Supreme the first pressing plate, displacement piece, the second pressing plate and force snesor, the top surface of force snesor of setting gradually connects bullet by spring base
The bottom end of property part；The top of displacement piece is equipped with the displacement sensor supported by second support；It further include single-chip microcontroller, single-chip microcontroller is adopted
Collect the shift value of voltage signal values, current signal value, the displacement sensor output of DC power supply, the force signal of force snesor output
Value.
Preferably, further including heating device, heating device includes setting in condensation water jacket middle part position, can protrude into experiment silicon
Heater strip in oil, heater strip connect heating power supply.
Preferably, the signal output end of single-chip microcontroller connects the control terminal of the heating power supply.
Preferably, further including the temperature sensor being arranged by third bracket, temperature sensor setting is in condensation water jacket
Between position, experiment silicone oil can be protruded into；The temperature signal value output end of temperature sensor to single-chip microcontroller signal input part.
Preferably, single-chip microcontroller is Ad μ c841 single-chip microcontroller.
Preferably, displacement piece is displacement steel disc.
Preferably, the first pressing plate is aluminium oxide pressing plate, the second pressing plate is poly fourfluoroplastics pressing plate.
Preferably, elastic component is preloading spring, adjusting screw is closely-pitched adjusting screw, and displacement sensor is electric vortex type position
Displacement sensor.
The structure preferably, experiment container, first support and second support are one of the forming.
Preferably, experiment container, first support and second support are that Steel material is made.
The utility model has the beneficial effects that: effectively simulating piezoelectric pile actuator in Engine Piezoelectric formula fuel injector
Actual working environment, simulates operating temperature by heating device, loads the field of force by elastic component preloading spring, can be in actuator
Output displacement, power output, on-load voltage and current signal are acquired in the course of work in real time, establishes complete piezoelectric pile actuator
Multi- scenarios method load test system provides reference frame for the properties of product assessment and improvement of piezoelectric pile actuator.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
In figure: 1- adjusting screw, 2- elastic component, 3- spring base, 4- force snesor, 5- experiment silicone oil, 6- temperature sensor,
7- heater strip, 8- heating power supply, 9- first support, 10- condensation water jacket, the second pressing plate of 11-, the first pressing plate of 12-, 13- are displaced piece,
14- displacement sensor, 15- single-chip microcontroller, 16- DC power supply, 17- piezoelectric pile actuator, 18- second support, 19- experiment container,
The gap 20-.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
A kind of piezoelectric pile actuator multi- scenarios method load test system, DC power supply 16 connect the electricity of piezoelectric pile actuator 17
Input terminal, including experiment container 19 are pressed, experiment container 19 is equipped with condensation water jacket 10, condenses among water jacket 10 for holding experiment silicon
Oil 5, the setting of piezoelectric pile actuator 17 condense between water jacket 10 and experiment container 19 in experiment silicone oil 5 equipped with cold for injecting
The gap 20 of condensate；It further include the elastic component 2 being arranged by first support 9,9 upper end of first support is equipped with and piezoelectric pile actuator
17 coaxial threaded holes, adjusting screw 1 are arranged in threaded hole, and the underrun spring base 3 of adjusting screw 1 connects elastic component 2
Top, the top of piezoelectric pile actuator 17 sets gradually the first pressing plate 12, displacement piece 13, the second pressing plate 11 and power from bottom to up
Sensor 4, the top surface of force snesor 4 connect the bottom end of elastic component 2 by spring base 3；The top for being displaced piece 13 is equipped with by the
The displacement sensor 14 of two brackets 18 support；Further include single-chip microcontroller 15, single-chip microcontroller 15 acquire DC power supply 16 voltage signal values,
The force signal value of shift value, the output of force snesor 4 that current signal value, displacement sensor 14 export.
It further include heating device, heating device includes setting at the condensation intermediate position of water jacket 10, can be protruded into experiment silicone oil 5
Heater strip 7, heater strip 7 connect heating power supply 8.The control terminal of the signal output end connection heating power supply 8 of single-chip microcontroller 15.
It further include the temperature sensor 6 being arranged by third bracket, the setting of temperature sensor 6 is in condensation 10 middle part of water jacket
Position can protrude into experiment silicone oil 5；The temperature signal value output end of temperature sensor 6 to single-chip microcontroller 15 signal input part.
Single-chip microcontroller 15 is Ad μ c841 single-chip microcontroller 15.
Being displaced piece 13 is displacement steel disc.
First pressing plate 12 is aluminium oxide pressing plate, and the second pressing plate 11 is poly fourfluoroplastics pressing plate.
Elastic component 2 is preloading spring, and adjusting screw 1 is closely-pitched adjusting screw 1, and displacement sensor 14 is electric vortex type displacement
Sensor 14.
Experiment container 19, first support 9 and second support 18 are one of the forming structure, experiment container 19,9 and of first support
Second support 18 is that Steel material is made.
As shown in Figure 1, the utility model be a kind of piezoelectric pile actuator multi- scenarios method load test system, including the field of force plus
Load, temperature field load, electric field load, displacement signal detection and piezoelectric pile actuator 17, being capable of effectively simulation piezoelectric pile execution
The more workplaces of thermo-electrically-power locating for device 17.
It includes sequentially connected closely-pitched adjusting screw 1, preloading spring, spring base 3 and force snesor that the field of force, which loads subsystem,
4, it includes experiment silicone oil 5, electric heating resistive temperature sensor 6, heater strip 7, heating power supply 8, experiment appearance that temperature field, which loads subsystem,
Device 19 and condensation water jacket 10.Displacement signal detection include the second pressing plate 11 namely poly fourfluoroplastics pressing plate, the first pressing plate 12 namely
Aluminium oxide pressing plate, displacement steel disc, electric vortex type displacement sensor 14, and the single-chip microcontroller 15 as signal picker.
The key of this system is to simulate required thermo-electrically-power working environment for piezoelectric pile actuator 17.Field of force load
Subsystem adjusts the decrement of the elastic component 2 namely preloading spring that are applied on actuator by closely-pitched adjusting screw 1, according to power
The loading force Signal Regulation closely-pitched adjusting screw 1 that sensor 4 acquires gos deep into position, realizes that the field of force of up to 40000N adds
It carries；Heating power supply 8 tests silicone oil 5 by electric-heating-wire-heating, is then transferred heat to again by experiment silicone oil 5 and is immersed in piezoelectric pile therein and holds
Row device 17, acquisition experiment 5 temperature signal of silicone oil of electric heating resistive temperature sensor 6 send single-chip microcontroller 15, the output control of single-chip microcontroller 15 to
Signal processed opens or closes heating power supply 8, starts or stops and tests the process that silicone oil 5 is heated by 7 pairs of heater strip, realizes
10 DEG C~160 DEG C of 17 operating temperature of piezoelectric pile actuator is adjusted, meanwhile, experiment container namely silicone oil bucket wall surface are equipped with condensation
Water jacket 10 takes away the fast cooling that heat realizes experiment silicone oil 5 by the condensed water flowing recycled in gap 20；DC power supply 16
Change driving voltage by adjusting 16 voltage of DC power supply, changes driving current by adjusting Internal current limit resistance, realize electric field
Load；Displacement sensor 14 will be displaced steel disc 13 and compress with piezoelectric pile actuator 17 and realize and move synchronously, electric vortex type position
Displacement sensor 14 realizes the acquisition of actuator displacement signal by the change in displacement of acquisition displacement steel disc.
Closely-pitched adjusting screw 1 is mounted on 3 upper end of spring base and the fine thread hole of first support 9 and cooperates in this implementation, uses
To adjust the elastic component 2 namely the amount of spring compression that are applied on piezoelectric pile actuator 17, according to the loading force of the acquisition of force snesor 4
What signal further adjusted closely-pitched adjusting screw 1 gos deep into position, realizes the control of pretightning force.
Force snesor 4 is placed in 3 lower end of spring base, and initial tension of spring is converted to current signal and sends single-chip microcontroller 15, power to
It is mounted with the poly fourfluoroplastics and aluminium oxide pressing plate of lightweight between sensor 4 and piezoelectric pile actuator 17, it is sandwiched between two pressing plates
Rigid steel disc, to transmit the work shift amount of piezoelectric pile actuator 17, the acquisition displacement piece 13 of electric vortex type displacement sensor 14
Displacement sends the single-chip microcontroller 15 as signal picker to.
Piezoelectric pile actuator 17 is immersed in silicone oil, with heating wire Heating Experiment silicone oil 5, is then passed again by experiment silicone oil 5
Heat to piezoelectric pile actuator 17, electric heating resistive temperature sensor 6 acquires silicone oil temperature signal and sends single-chip microcontroller 15 to.
The wall surface of 19 silicone oil bucket of experiment container is equipped with condensation water jacket 10, by between condensation water jacket 10 and experiment container 19
Gap 20 inject condensed water, circulation condensed water flowing takes away heat realize silicone oil fast cooling.
17 upper end of piezoelectric pile actuator is slightly above the surface for testing silicone oil 5, is transported with reducing silicone oil to piezoelectric pile actuator 17
The damping action of dynamic process.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (10)
1. a kind of piezoelectric pile actuator multi- scenarios method load test system, DC power supply (16) connects piezoelectric pile actuator (17)
Voltage input end, it is characterised in that: including experiment container (19), the experiment container (19) is equipped with condensation water jacket (10), described
For holding experiment silicone oil (5) among condensation water jacket (10), the piezoelectric pile actuator (17) is arranged in the experiment silicone oil (5)
In, the gap (20) for injecting condensed water is equipped between condensation water jacket (10) and the experiment container (19)；Further include
The elastic component (2) being arranged by first support (9), first support (9) upper end are equipped with coaxial with the piezoelectric pile actuator (17)
Threaded hole, adjusting screw (1) is arranged in the threaded hole, and the underrun spring base (3) of the adjusting screw (1) connects
The top of elastic component (2), the top of the piezoelectric pile actuator (17) set gradually the first pressing plate (12), displacement piece from bottom to up
(13), the top surface of the second pressing plate (11) and force snesor (4), the force snesor (4) connects elastic component by spring base (3)
(2) bottom end；The top of displacement piece (13) is equipped with the displacement sensor (14) supported by second support (18)；Further include
Single-chip microcontroller (15), the single-chip microcontroller (15) acquire voltage signal values, the current signal value, displacement sensing of the DC power supply (16)
The force signal value that shift value, the force snesor (4) of device (14) output export.
2. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 1, it is characterised in that: also wrap
Heating device is included, the heating device includes setting at the intermediate position of the condensation water jacket (10), can protrude into the experiment silicone oil
(5) heater strip (7) in, the heater strip (7) connect heating power supply (8).
3. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 2, it is characterised in that: described
The signal output end of single-chip microcontroller (15) connects the control terminal of the heating power supply (8).
4. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 1, it is characterised in that: also wrap
The temperature sensor (6) being arranged by third bracket is included, temperature sensor (6) setting is intermediate in the condensation water jacket (10)
Position, the lower end of the temperature sensor (6) can protrude into the experiment silicone oil (5)；The temperature signal of the temperature sensor (6)
Value is exported to the signal input part of the single-chip microcontroller (15).
5. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 1, it is characterised in that: described
Single-chip microcontroller (15) is Ad μ c841 single-chip microcontroller (15).
6. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 1, it is characterised in that: described
Being displaced piece (13) is displacement steel disc.
7. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 1, it is characterised in that: described
First pressing plate (12) is aluminium oxide pressing plate, and second pressing plate (11) is poly fourfluoroplastics pressing plate.
8. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 1, it is characterised in that: described
Elastic component (2) is preloading spring, and the adjusting screw (1) is closely-pitched adjusting screw (1), and institute's displacement sensors (14) are electric whirlpool
Streaming displacement sensor (14).
9. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 1, it is characterised in that: described
Experiment container (19), the first support (9) and the second support (18) are one of the forming structure.
10. a kind of piezoelectric pile actuator multi- scenarios method load test system according to claim 1, it is characterised in that: institute
Stating experiment container (19), the first support (9) and the second support (18) is that Steel material is made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821562542.8U CN209117312U (en) | 2018-09-20 | 2018-09-20 | A kind of piezoelectric pile actuator multi- scenarios method load test system |
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| CN201821562542.8U CN209117312U (en) | 2018-09-20 | 2018-09-20 | A kind of piezoelectric pile actuator multi- scenarios method load test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672311A (en) * | 2019-09-29 | 2020-01-10 | 盐城家安乐自动化科技有限公司 | Spring pack endurance testing machine |
| CN111044804A (en) * | 2019-12-12 | 2020-04-21 | 佛山市卓膜科技有限公司 | Piezoelectric coefficient measuring method for piezoelectric material |
-
2018
- 2018-09-20 CN CN201821562542.8U patent/CN209117312U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672311A (en) * | 2019-09-29 | 2020-01-10 | 盐城家安乐自动化科技有限公司 | Spring pack endurance testing machine |
| CN110672311B (en) * | 2019-09-29 | 2021-08-20 | 盐城家安乐自动化科技有限公司 | Spring pack endurance testing machine |
| CN111044804A (en) * | 2019-12-12 | 2020-04-21 | 佛山市卓膜科技有限公司 | Piezoelectric coefficient measuring method for piezoelectric material |
| CN111044804B (en) * | 2019-12-12 | 2022-05-20 | 佛山市卓膜科技有限公司 | Piezoelectric coefficient measuring method for piezoelectric material |
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