CN106678102A - Deflecting plate jet flow electro-hydraulic servo valve based on piezoelectric structure - Google Patents
Deflecting plate jet flow electro-hydraulic servo valve based on piezoelectric structure Download PDFInfo
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- CN106678102A CN106678102A CN201510750433.3A CN201510750433A CN106678102A CN 106678102 A CN106678102 A CN 106678102A CN 201510750433 A CN201510750433 A CN 201510750433A CN 106678102 A CN106678102 A CN 106678102A
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- valve
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- upper shell
- connecting rod
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Abstract
The invention relates to a deflecting plate jet flow electro-hydraulic servo valve based on a piezoelectric structure. The valve comprises a valve body 1, a sensor 2, a valve pocket 3, a valve element 4, an end cap 5, a jet flow assembly 6, a counter-force rod 7, a connecting rod 8, a piezoelectric bimorph 9, a support structure 10, a bourdon tube 11, an upper shell 12 and an outer cover 13 and is characterized in that the head end of the piezoelectric bimorph 9 is assembled in the middle of the support structure 10 through a press fit connection manner, and the tail end of the piezoelectric bimorph 9 is connected with the connecting rod 8 through a press fit connection manner; the connecting rod 8 is connected with the bourdon tube 11 and the counter-force rod 7 through a press fit manner; the support structure 10 and the bourdon tube 11 are mounted on the upper shell 12 through screws; the jet flow assembly 6 is mounted in the upper shell 12; the jet flow assembly 6 and a narrow groove in the counter-force rod 7 form a jet flow structure; the end face of the valve body 1 is connected with the sensor 2; the valve pocket 3 and the valve element 4 are mounted in the valve body 1; the upper shell 12 is mounted on the valve body 1 through threaded connection; and the counter-force rod 7 goes deep into the valve body 1 through a circular hole and is connected with the valve element 4.
Description
Technical field
The invention belongs to electro-hydraulic servo valve technology, and in particular to a kind of deflecting plates based on piezoelectric structure
Jet electrohydraulic servo valve.
Background technology
Deflecting plates jet servo valve is a kind of new jet electrohydraulic servo valve, traditional for substituting
Nozzle-baffle-type electrohydraulic servo valve, compared to nozzle-baffle-type electrohydraulic servo valve, deflecting plates is penetrated
Stream servo valve has the characteristics of resistance tocrocking is high, reliability is high, can be in Aeronautics and Astronautics, heavy type
The multiple fields such as machinery, equipment manufacturing substitute nozzle-baffle-type electrohydraulic servo valve.Typical deflection
Plate jet servo valve adopts torque-motor structure to drive armature component to rotate, and produce deflector with
Relative displacement between jet disk, in turn results in the output pressure reduction of prestage, so as to drive valve element to move,
The pressure and flow for forming servo valve is exported.The air gap of torque-motor structure is to ensure deflecting plates jet
The key element of servo valve performance, should ensure void dimension in the reasonable scope, also ensure many
The size of individual air gap can not have excessive difference, and to the technique of debuging of product very high requirement is proposed；
On the other hand, because air gap is very tiny, the situation that armature is adsorbed by magnetic conductor is easily caused, will
Cause the valve element of deflecting plates jet servo valve amesiality, continue output flow, not by servo-drive system
Control, to the functional reliability of servo-drive system risk is caused.
The deflecting plates jet servo valve based on piezoelectric structure that this patent is proposed, using piezoelectric bimorph
Structure realizes conversion from electric signal to mechanical displacement, it is to avoid loaded down with trivial details air gap debugs link, drops
The low resetting difficulty of deflecting plates jet servo valve, eliminate magnet structure, it is to avoid armature suction
The attached failure risk for causing.Meanwhile, piezoelectric structure positioning precision is high, frequency response is high, contributes to
Improve the dynamic and static performance of deflecting plates jet servo valve.
The content of the invention
The purpose of the present invention is：For solve electrohydraulic servo valve used by armature component easily connecting rod with
The problem of permeability at counter-force bar pressing, proposes a kind of armature structure of counter-force bar connecting rod integration.
The technical scheme is that：
A kind of deflecting plates jet electrohydraulic servo valve based on piezoelectric structure, including valve body (1), sensing
Device (2), valve pocket (3), valve element (4), plug (5), fluidic module (6), counter-force bar (7),
Connecting rod (8), piezoelectric bimorph (9), supporting construction (10), bourdon tube (11), upper shell (12),
Outer cover (13), it is characterised in that piezoelectric bimorph (9) head end is filled by way of pressing connection
It is assigned in the middle of supporting construction (10), end is connected with connecting rod (8) by pressing, connecting rod (8)
It is connected with bourdon tube (11) and counter-force bar (7) respectively by pressing, supporting construction (10) and bullet
Reed pipe (11) is installed on upper shell (12) by screw, is equipped with inside upper shell (12) and is penetrated
Stream component (6), with the narrow slot in counter-force bar (7) fluidic architecture is collectively forming；Valve body (1) is held
Connect sensor (2) on face；Valve pocket (3), valve element (4) are installed on valve body (1) inside, on
Housing (12) is threaded connection and is installed on valve body (1), and counter-force bar (7) is by circular hole depth
Enter internal to valve body (1) and be connected with valve element (4)；Outer cover (13) is installed on valve body (1)
On, for protecting the structures such as piezoelectric bimorph (9), bourdon tube (11).
It is an advantage of the invention that：
Using the deflecting plates jet servo valve product described by patent of the present invention, have the effect that：
Frequency response is high, and dynamic property is good；Contamination resistance is strong；Simple structure, it is easy to debug；It is reliable
Property it is high, without absorption risk.
Description of the drawings
Fig. 1 is based on the deflecting plates jet servo valve structural representation of piezoelectric structure
1- valve bodies, 2- sensors, 3- valve pockets, 4- valve elements, 5- plugs, 6- fluidic modules, 7- are anti-
Power bar, 8- connecting rods, 9- piezoelectric bimorphs, 10- supporting constructions, 11- bourdon tubes, 12- upper shells,
13- outer covers.
Specific embodiment
The present invention is described in detail with reference to Figure of description.
The structure of the present invention mainly includes valve body, valve pocket, valve element, sensor, piezoelectric chip, bullet
The structures such as reed pipe, counter-force bar, connecting rod.Piezoelectric bimorph first section is assembled by way of pressing connection
In the middle of supporting construction, end and connecting rod be connecteds by pressing, connecting rod by press respectively with spring
Pipe and the connection of counter-force bar, supporting construction is installed on upper shell with bourdon tube by screw, upper shell
Inside is collectively forming fluidic architecture equipped with the narrow slot in fluidic module, with counter-force bar；On valve body end face
Connection sensor, valve pocket, valve element are installed on valve inner, and upper shell is threaded connection and is installed on
On valve body, counter-force bar is deeply connected by circular hole to valve inner and with valve element；Outer cover is installed on
On valve body, for protecting the structures such as piezoelectric bimorph, bourdon tube.
In the course of work of the present invention, first piezoelectric bimorph is encouraged by electric signal, is produced curved
Song deformation, because head end is constrained by supporting construction, so flecition is in end, passes to
Connecting rod, and counter-force bar is driven by connecting rod, so as to form counter-force bar with the relative position between fluidic module
Move, produce jet level pressure reduction, drive valve element movement, cause the change of window size between valve element-valve pocket
Change, reach the purpose of controlled output pressure and flow；Valve element movement simultaneously causes counter-force bar to deform,
Feedback is produced to bar linkage structure and piezoelectric bimorph chip architecture, the hydraulic circuit of electrohydraulic servo valve is formed,
Ensure the control accuracy and stability of servo valve；Sensor is used to monitor the displacement of sensor, carries
Supply peripheral control unit to monitor the working condition of servo valve, it can also be used to construct closing for control system
Loop back path, realizes being controlled the electric signal of servo valve.
The application effect of the present invention：
1. air gap adjustment link is eliminated, resetting difficulty is reduced, contributes to realizing product quality control
System；
2. the torque motor structure of classics instead of, it is to avoid armature is adsorbed in the wind of permanent magnet
Danger；
3. piezoelectric structure has good response speed and positioning precision, is favorably improved electro-hydraulic servo
The dynamic and static state performance of valve.
Claims (1)
1. a kind of deflecting plates jet electrohydraulic servo valve based on piezoelectric structure, including valve body (1), passes
Sensor (2), valve pocket (3), valve element (4), plug (5), fluidic module (6), counter-force bar (7),
Connecting rod (8), piezoelectric bimorph (9), supporting construction (10), bourdon tube (11), upper shell (12),
Outer cover (13), it is characterised in that piezoelectric bimorph (9) head end is filled by way of pressing connection
It is assigned in the middle of supporting construction (10), end is connected with connecting rod (8) by pressing, connecting rod (8)
It is connected with bourdon tube (11) and counter-force bar (7) respectively by pressing, supporting construction (10) and bullet
Reed pipe (11) is installed on upper shell (12) by screw, is equipped with inside upper shell (12) and is penetrated
Stream component (6), with the narrow slot in counter-force bar (7) fluidic architecture is collectively forming；Valve body (1) is held
Connect sensor (2) on face；Valve pocket (3), valve element (4) are installed on valve body (1) inside, on
Housing (12) is threaded connection and is installed on valve body (1), and counter-force bar (7) is by circular hole depth
Enter internal to valve body (1) and be connected with valve element (4)；Outer cover (13) is installed on valve body (1)
On, for protecting piezoelectric bimorph (9), bourdon tube (11) structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510750433.3A CN106678102A (en) | 2015-11-06 | 2015-11-06 | Deflecting plate jet flow electro-hydraulic servo valve based on piezoelectric structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510750433.3A CN106678102A (en) | 2015-11-06 | 2015-11-06 | Deflecting plate jet flow electro-hydraulic servo valve based on piezoelectric structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678102A true CN106678102A (en) | 2017-05-17 |
Family
ID=58858707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510750433.3A Pending CN106678102A (en) | 2015-11-06 | 2015-11-06 | Deflecting plate jet flow electro-hydraulic servo valve based on piezoelectric structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN106678102A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435667A (en) * | 2017-08-10 | 2017-12-05 | 燕山大学 | Piezoelectric ceramic driven jet pipe electrohydraulic servo valve |
| CN108150470A (en) * | 2017-12-20 | 2018-06-12 | 中国航发长春控制科技有限公司 | A kind of electrohydraulic servo valve bourdon tube |
| CN110805583A (en) * | 2019-10-15 | 2020-02-18 | 南京航空航天大学 | Piezoelectric sheet driven nozzle blocking disc pressure servo valve with main valve core hydraulic compensation |
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| US20020100511A1 (en) * | 2000-12-19 | 2002-08-01 | Snecma Moteurs | Fail-freeze servovalve |
| CN1434217A (en) * | 2003-02-25 | 2003-08-06 | 吉林大学 | Piezoelectric driven type servo valve |
| CN2713192Y (en) * | 2004-07-22 | 2005-07-27 | 上海航天控制工程研究所 | Micro flow force feedback electro-hydraulic servo valve |
| CN201443642U (en) * | 2008-12-19 | 2010-04-28 | 上海诺玛液压***有限公司 | Electric feedback electrohydraulic servo valve of jet pipe |
| EP2230408A2 (en) * | 2009-03-18 | 2010-09-22 | Nabtesco Corporation | Valve unit |
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| CN204226322U (en) * | 2014-11-11 | 2015-03-25 | 九江中船仪表有限责任公司（四四一厂） | A kind of electrohydraulic control |
| CN104912861A (en) * | 2015-05-21 | 2015-09-16 | 遵义市节庆机电有限责任公司 | Electro-hydraulic servo valve structure |
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2015
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| US20020100511A1 (en) * | 2000-12-19 | 2002-08-01 | Snecma Moteurs | Fail-freeze servovalve |
| CN1434217A (en) * | 2003-02-25 | 2003-08-06 | 吉林大学 | Piezoelectric driven type servo valve |
| CN2713192Y (en) * | 2004-07-22 | 2005-07-27 | 上海航天控制工程研究所 | Micro flow force feedback electro-hydraulic servo valve |
| CN201443642U (en) * | 2008-12-19 | 2010-04-28 | 上海诺玛液压***有限公司 | Electric feedback electrohydraulic servo valve of jet pipe |
| EP2230408A2 (en) * | 2009-03-18 | 2010-09-22 | Nabtesco Corporation | Valve unit |
| CN201851415U (en) * | 2010-11-09 | 2011-06-01 | 韩晓新 | Electro-hydraulic servo valve |
| CN204226322U (en) * | 2014-11-11 | 2015-03-25 | 九江中船仪表有限责任公司（四四一厂） | A kind of electrohydraulic control |
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| 周淼磊等: "压电型喷嘴挡板阀及其控制方法研究", 《光学 精密工程》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435667A (en) * | 2017-08-10 | 2017-12-05 | 燕山大学 | Piezoelectric ceramic driven jet pipe electrohydraulic servo valve |
| CN107435667B (en) * | 2017-08-10 | 2020-02-25 | 燕山大学 | Piezoelectric ceramic driven jet pipe electro-hydraulic servo valve |
| CN108150470A (en) * | 2017-12-20 | 2018-06-12 | 中国航发长春控制科技有限公司 | A kind of electrohydraulic servo valve bourdon tube |
| CN110805583A (en) * | 2019-10-15 | 2020-02-18 | 南京航空航天大学 | Piezoelectric sheet driven nozzle blocking disc pressure servo valve with main valve core hydraulic compensation |
| CN110805583B (en) * | 2019-10-15 | 2021-07-09 | 南京航空航天大学 | Piezoelectric sheet driven nozzle blocking disc pressure servo valve with main valve core hydraulic compensation |
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