CN102661424A - Plunger piston type piezoelectric valve based on multi-vibrator tandem drive - Google Patents
Plunger piston type piezoelectric valve based on multi-vibrator tandem drive Download PDFInfo
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- CN102661424A CN102661424A CN2012101831037A CN201210183103A CN102661424A CN 102661424 A CN102661424 A CN 102661424A CN 2012101831037 A CN2012101831037 A CN 2012101831037A CN 201210183103 A CN201210183103 A CN 201210183103A CN 102661424 A CN102661424 A CN 102661424A
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Abstract
The invention relates to a plunger piston type piezoelectric valve based on multi-vibrator tandem drive and belongs to the field of fluid control. A valve body is fixed on a driver shell through a screw; the valve body is provided with an inlet, an outlet and a valve chamber; the valve chamber is internally provided with a valve core; the valve core is provided with a through-flow annular groove and sealing rings are arranged at two sides of the valve core; one end of a pin is fixed on the valve core and the other end of the pin is placed in the driver shell; a piezoelectric driver is connected in series through a hollow rivet and is placed in the driver shell; the piezoelectric driver is formed by riveting one pair of bowl-shaped piezoelectric vibrators; a first piezoelectric vibrator at the upper end is riveted with the pin and the last one piezoelectric vibrator at the lower end is riveted with a base; and the base is fixed on a bottom plate through a screw. According to the invention, the piezoelectric valve is formed by a method of connecting a plurality of the bowl-shaped piezoelectric vibrators in series to drive the plunger piston type valve core, so that the plunger piston type piezoelectric valve is suitable for application fields of large flow adjusting range, high fluid pressure, high requirements and control precision and good stopping effect.
Description
Technical field
The invention belongs to fluid control application, be specifically related to a kind of plunger type piezo electric valve, be used for big flow, high pressure and require the higher Environmental Conditions of control accuracy based on the tandem drive of many oscillators.
Background technique
Utilize the thin sheet type piezoelectric vibrator under the voltage effect, to produce diastrophic characteristic, all developed polytype piezo crystals plate valve both at home and abroad, because of it has fast, simple in structure, the no electromagnetic interference of response, many advantages such as cheap are widely used.The thin sheet type piezoelectric vibrator that is used to make the piezo crystals plate valve at present mainly contains circle, overhang and simply supported beam piezoelectric vibrator, like Chinese patent 200780048423.9,01133830.X etc.Although the structural type of piezoelectric vibrator and mounting type are different in the above-mentioned piezo electric valve, all be directly to utilize piezoelectric vibrator opening and closing during its work from a side control valve bore of valve opening.Under this mode of operation; Piezoelectric vibrator both sides hydrodynamic pressure does not wait; Hydrodynamic pressure can influence its closing velocity and closed condition, because of the driving force of thin sheet type piezoelectric vibrator is lower, can't close when hydrodynamic pressure is excessive at all; So Chinese patent 01133830.X utilizes a spring increase to close ability, its result causes that the aperture of valve reduces, through-current capability descends.On the other hand, mostly existing piezo crystals plate valve is what single piezoelectric vibrator was controlled, can't realize the switching control of big flow because of the piezoelectric vibrator amount of deformation is less.In view of the foregoing, existing piezo crystals plate valve only can be used for micrometeor, low-pressure and require the not high occasion of control accuracy, has seriously restricted the popularization and the application of piezo crystals plate valve.
Summary of the invention
The present invention proposes a kind of plunger type piezo electric valve based on the tandem drive of many oscillators, to solve the deficiency of existing piezo crystals plate valve at aspects such as control accuracy, flow and pressure, to satisfy the demand of big flow, high pressure and the control of highi degree of accuracy fluid.
The technological scheme that the present invention takes is: on base plate, valve body passes through screw on actuator housing to actuator housing through screw; Valve body is provided with import, outlet and valve pocket, and valve pocket inside is equipped with spool, and spool is provided with through-flow annular groove, and the both sides of through-flow annular groove are equipped with seal ring; Pin is fixed on the spool through nut, and pin gets in the actuator housing from the through hole of actuator housing upper end; 2-50 piezoelectric actuator is through the tubular-shank rivet series connection and place in the actuator housing; Said piezoelectric actuator is formed through rivet by a pair of alms bowl type piezoelectric vibrator, and alms bowl type piezoelectric vibrator is formed by alms bowl shell and ring piezoelectric bonding wafer; First piezoelectric vibrator of said upper end and pin riveted joint, last piezoelectric vibrator of lower end and base riveted joint, base through screws is fixed on the base plate; Two piezoelectric chips on the said same piezoelectric actuator connect through lead one, and the piezoelectric chip on the different piezoelectric actuators connects through lead two; Alms bowl shell on last piezoelectric vibrator of said lower end and piezoelectric chip are connected with the control power supply through the lead group again.
According to concrete function requirement, piezo electric valve of the present invention can be arranged to standard-sized sheet, half-open and three kinds of states of full cut-off under nature, and specifically the screwing length through regulating spool and pin changes the position of spool in valve pocket.
The diverse location state of spool during according to normality; The voltage that is applied during piezoelectric vibrator work is different: under
full-gear; Piezoelectric vibrator applies negative voltage; Piezoelectric transducer shortens; Spool moves down, and the connection area of import, outlet and through-flow annular groove reduces, and flow reduces; Under
full-shut position; Piezoelectric vibrator applies positive voltage; The piezoelectric transducer elongation; Move on the spool, the connection area of import, outlet and through-flow annular groove increases, and flow increases; Under
half-open position; Requiring to apply positive voltage or negative voltage according to Flow-rate adjustment increases flow or reduces; Compare with preceding two kinds of mode of operations, its advantage be when the driving voltage of piezoelectric vibrator of flow adjustment range/when the valve opening maximum opening is identical reduce by half or when driving voltage is identical flow adjustment range double.
Characteristic of the present invention and advantage are:
tandem drive of employing multiple pressure electric tachometer indicator; Alms bowl type piezoelectric vibrator make spool travel big, be directly proportional with piezoelectric vibrator quantity, so can be through increase piezoelectric vibrator quantity realization Flow-rate adjustment in a big way;
adopts the plunger type spool that has annular through-flow groove to regulate flow; Hydrodynamic pressure can not produce the axial force that hinders valve core movement or change the spool state; The speed of response piece of valve, good by property is so be suitable for the occasion of high pressure and smart amount control; Can be standard-sized sheet, half-open and three kinds of mode of operations of full cut-off during
normality, wherein the advantage of half-open mode of operation is: when the driving voltage of piezoelectric vibrator of flow adjustment range/when the valve opening maximum opening is identical reduce by half or when driving voltage is identical flow adjustment range double.
Description of drawings
Fig. 1 is the section of structure of piezo electric valve during the normality full opening mode in preferred embodiment of the present invention;
Fig. 2 is the structural profile schematic representation of piezoelectric vibrator in preferred embodiment of the present invention;
Fig. 3 is the plan view of Fig. 2;
The installation process schematic representation of piezoelectric actuator in preferred embodiment of Fig. 4 the present invention;
Fig. 5 is the partial structurtes sectional drawing of piezo electric valve during the half-open pattern of normality in preferred embodiment of the present invention;
Fig. 6 is the partial structurtes sectional drawing of piezo electric valve during normality full cut-off pattern in preferred embodiment of the present invention.
Embodiment:
Like Fig. 1, Fig. 2, shown in Figure 3, on base plate 1, valve body 7 passes through screw on described actuator housing 2 to actuator housing 2 through screw; Said valve body 7 is provided with import 7-1, valve pocket 7-2 and outlet 7-3, and said valve pocket 7-2 inside is equipped with spool 8, and said spool 8 is provided with through-flow annular groove 8-1, and the both sides of said through-flow annular groove 8-1 are equipped with seal ring 9; Pin 5 is fixed on the spool 8 through nut 6, and pin 5 gets in the actuator housing 2 from the through hole 2-1 of actuator housing 2 upper ends; 2-50 piezoelectric actuator 3 is through tubular-shank rivet 10 series connection and place in the actuator housing 2; Said piezoelectric actuator 3 is formed through rivet 3-1 riveted joint by a pair of alms bowl type piezoelectric vibrator 3-2, and alms bowl type piezoelectric vibrator 3-2 is by alms bowl shell 3-2-2 and bonding the forming of ring piezoelectric wafer 3-2-1; First piezoelectric vibrator 3-2 of said upper end and pin 5 riveted joints, last piezoelectric vibrator 3-2 of lower end and base 14 riveted joints, said base 14 passes through screw on base plate 1; Two piezoelectric chip 3-2-1 on the said same piezoelectric actuator 3-2 connect through lead 1, and the piezoelectric chip 3-2-1 on the different piezoelectric actuator 3-2 connects through lead 2 11; Alms bowl shell 3-2-2 on last piezoelectric vibrator 3-2 of said lower end and piezoelectric chip 3-2-1 are connected with control power supply 13 through lead group 12 again.
As shown in Figure 4, the installation process of each piezoelectric actuator 3 is such among the present invention: at first piezoelectric vibrator 3-2 is riveted respectively with pin 5 or tubular-shank rivet 10 or base 14; Then, two adjacent piezoelectric vibrator 3-2 that will be rivets respectively in pin 5 or tubular-shank rivet 10 or base 14 through rivet 3-1 again rivet.
According to concrete function requirement; Piezoresistance of the present invention can be arranged to standard-sized sheet, half-open and three kinds of states of full cut-off under nature; Respectively like Fig. 1, Fig. 5, shown in Figure 6; Its regulating method is: the nut 6 of fixed pin shaft 5 is unclamped, and the screwing length of regulating spool 8 and pin 5 is to the desired position, and then with nut 6 lockings.
The diverse location state of spool 8 during according to normality; The voltage that is applied during piezoelectric vibrator 3-2 work is different: under
full-gear; Piezoelectric vibrator 3-2 applies negative voltage; Piezoelectric transducer 3 shortens; Spool 8 moves down, and the connection area of import 7-2, outlet 7-2 and through-flow annular groove 8-1 reduces, and flow reduces; Under
full-shut position; Piezoelectric vibrator 3-2 applies positive voltage; Piezoelectric transducer 3 elongations; Move on the spool 8, the connection area of import 7-2, outlet 7-2 and through-flow annular groove 8-1 increases, and flow increases; Under
half-open position; Requiring to apply positive voltage or negative voltage according to Flow-rate adjustment increases flow or reduces; Compare with preceding two kinds of mode of operations, its advantage be when the driving voltage of piezoelectric vibrator of flow adjustment range/when the valve opening maximum opening is identical reduce by half or when driving voltage is identical the flow control ability double.
Claims (2)
1. plunger type piezo electric valve based on the tandem drive of many oscillators is characterized in that: actuator housing through screw on base plate, valve body through screw on actuator housing; Valve body is provided with import, outlet and valve pocket, and valve pocket inside is equipped with spool, and spool is provided with through-flow annular groove, and the both sides of through-flow annular groove are equipped with seal ring; Pin is fixed on the spool through nut, and pin gets in the actuator housing from the through hole of actuator housing upper end; 2-50 piezoelectric actuator is through the tubular-shank rivet series connection and place in the actuator housing; Said piezoelectric actuator is formed through rivet by a pair of alms bowl type piezoelectric vibrator, and alms bowl type piezoelectric vibrator is formed by alms bowl shell and ring piezoelectric bonding wafer; First piezoelectric vibrator of said upper end and pin riveted joint, last piezoelectric vibrator of lower end and base riveted joint, base through screws is fixed on the base plate; Two piezoelectric chips on the said same piezoelectric actuator connect through lead one, and the piezoelectric chip on the different piezoelectric actuators connects through lead two; Alms bowl shell on last piezoelectric vibrator of said lower end and piezoelectric chip are connected with the control power supply through the lead group again.
2. the plunger type piezo electric valve based on the tandem drive of many oscillators according to claim 1 is characterized in that: piezo electric valve can be arranged to standard-sized sheet, half-open and three kinds of states of full cut-off under nature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101831037A CN102661424B (en) | 2012-06-01 | 2012-06-01 | Plunger piston type piezoelectric valve based on multi-vibrator tandem drive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101831037A CN102661424B (en) | 2012-06-01 | 2012-06-01 | Plunger piston type piezoelectric valve based on multi-vibrator tandem drive |
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| CN102661424A true CN102661424A (en) | 2012-09-12 |
| CN102661424B CN102661424B (en) | 2013-11-20 |
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| CN2012101831037A Active CN102661424B (en) | 2012-06-01 | 2012-06-01 | Plunger piston type piezoelectric valve based on multi-vibrator tandem drive |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996838A (en) * | 2012-12-13 | 2013-03-27 | 浙江师范大学 | Intelligent large-flow electro-hydraulic valve |
| WO2015054908A1 (en) * | 2013-10-15 | 2015-04-23 | 深圳市华星光电技术有限公司 | Transfer roller having adjustable vacuum suction force and film adhering method using the transfer roller |
| CN106015685A (en) * | 2016-07-22 | 2016-10-12 | 北京控制工程研究所 | Piezoelectric proportion adjustment valve applicable to high-voltage gas |
| EP4047808A4 (en) * | 2019-10-15 | 2022-12-21 | Panasonic Intellectual Property Management Co., Ltd. | Power generation device and input device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11346119A (en) * | 1998-06-02 | 1999-12-14 | Toyo Commun Equip Co Ltd | Piezoelectric oscillator |
| CN202019319U (en) * | 2011-04-01 | 2011-10-26 | 浙江师范大学 | Power generation device for lamp switch based on hollow piezoelectric transducer |
| CN202612774U (en) * | 2012-06-01 | 2012-12-19 | 浙江师范大学 | Plunger type piezoelectric valve based on multi-vibrator tandem drive |
-
2012
- 2012-06-01 CN CN2012101831037A patent/CN102661424B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11346119A (en) * | 1998-06-02 | 1999-12-14 | Toyo Commun Equip Co Ltd | Piezoelectric oscillator |
| CN202019319U (en) * | 2011-04-01 | 2011-10-26 | 浙江师范大学 | Power generation device for lamp switch based on hollow piezoelectric transducer |
| CN202612774U (en) * | 2012-06-01 | 2012-12-19 | 浙江师范大学 | Plunger type piezoelectric valve based on multi-vibrator tandem drive |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996838A (en) * | 2012-12-13 | 2013-03-27 | 浙江师范大学 | Intelligent large-flow electro-hydraulic valve |
| WO2015054908A1 (en) * | 2013-10-15 | 2015-04-23 | 深圳市华星光电技术有限公司 | Transfer roller having adjustable vacuum suction force and film adhering method using the transfer roller |
| US9370919B2 (en) | 2013-10-15 | 2016-06-21 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Vacuum suction adjustable transfer roller and film attachment method using the transfer roller |
| CN106015685A (en) * | 2016-07-22 | 2016-10-12 | 北京控制工程研究所 | Piezoelectric proportion adjustment valve applicable to high-voltage gas |
| EP4047808A4 (en) * | 2019-10-15 | 2022-12-21 | Panasonic Intellectual Property Management Co., Ltd. | Power generation device and input device |
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| CN102661424B (en) | 2013-11-20 |
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Owner name: ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID JILI Effective date: 20131010 |
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Inventor after: Wang Shuyun Inventor after: Han Junwu Inventor after: Zeng Ping Inventor after: Cheng Guangming Inventor after: Wang Hongyun Inventor after: Ma Zehui Inventor after: Huang Zhenqun Inventor before: Wang Shuyun Inventor before: Han Junwu Inventor before: Zeng Ping Inventor before: Cheng Guangming Inventor before: Wang Hongyun Inventor before: Ma Zehui |
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Free format text: CORRECT: INVENTOR; FROM: WANG SHUYUN KAN JUNWU CENG PING CHENG GUANGMING WANG HONGYUN MA ZEHUI TO: WANG SHUYUN KAN JUNWU CENG PING CHENG GUANGMING WANG HONGYUN MA ZEHUI HUANG ZHENQUN |
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Effective date of registration: 20131010 Address after: 321001 Zhejiang province Jinhua City Yingbin Road No. 688 Applicant after: Zhejiang Normal University Applicant after: Electric Power Research Institute, State Grid Jilin Power Co., Ltd. Applicant after: Jilin Academy of Electric Power Science Address before: 321001 Zhejiang province Jinhua City Yingbin Road No. 688 Applicant before: Zhejiang Normal University |
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