CN108591584B - Piezoelectric driving device for controlling rotary valve - Google Patents
Piezoelectric driving device for controlling rotary valve Download PDFInfo
- Publication number
- CN108591584B CN108591584B CN201810549089.5A CN201810549089A CN108591584B CN 108591584 B CN108591584 B CN 108591584B CN 201810549089 A CN201810549089 A CN 201810549089A CN 108591584 B CN108591584 B CN 108591584B
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- oil
- cylinder body
- piston
- piston cylinder
- storage cavity
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- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims description 15
- 230000006837 decompression Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 10
- 239000007921 spray Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/088—Characterised by the construction of the motor unit the motor using combined actuation, e.g. electric and fluid actuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/004—Actuating devices; Operating means; Releasing devices actuated by piezoelectric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B2015/206—Combined actuation, e.g. electric and fluid actuated
Abstract
The invention discloses a piezoelectric driving device for controlling a rotary valve, which comprises a piezoelectric body, a first piston cylinder body, a second piston cylinder body, a blade and the control rotary valve, wherein a first oil storage cavity is arranged in the first piston cylinder body, a second oil storage cavity is arranged in the second piston cylinder body, a first piston is arranged in the first oil storage cavity, a first piston rod fixedly connected with the piezoelectric body is fixedly arranged on the first piston, a sliding channel is fixedly arranged on the first piston cylinder body, a second piston is arranged in the second oil storage cavity, a second piston rod is arranged on the second piston, an oil injection pipe is arranged on the second piston cylinder body, the blade drives the control rotary valve to rotate, and an oil supply pipe is communicated with the second oil storage cavity. The invention has the following advantages and effects: the invention has the advantages of high precision, quick response, low power consumption, long service life, compact structure, environmental protection, energy conservation and the like; and the working frequency of the electro-hydraulic system can be greatly improved through the piezoelectric control rotary valve, so that the urgent requirements of engineering practice are met.
Description
Technical Field
The present invention relates to a valve body driving device, and more particularly, to a piezoelectric driving device for controlling a rotary valve.
Background
The electrohydraulic system has the characteristics of high power, good reliability, high automation degree and the like, and is widely applied and developed in the fields of mechanical transportation, aerospace, ships, environmental simulation and the like by virtue of the advantages along with the continuous improvement of the working frequency of the electrohydraulic system. The control valve is the key for improving the working frequency of an electro-hydraulic system, the performance of the electro-hydraulic servo valve is greatly improved at present, the working frequency of the system is greatly improved, but the system can not meet the requirements of engineering tests, however, the improvement of the response frequency of the servo valve enters the bottleneck, the improvement of each point needs high investment, and the manufacturing cost is extremely high. In this case, control valves of special construction and materials are continuously proposed, and piezoelectric material driven control rotary valves are a big attempt. Compared with the traditional valve, the piezoelectric valve has the advantages of high precision, quick response, small power consumption, long service life, compact structure, environmental protection, energy conservation and the like due to the excellent physical properties of the piezoelectric material.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the prior art and provides a piezoelectric driving device for a control rotary valve, which drives the control rotary valve to rotate through piezoelectric materials.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a piezoelectricity drive arrangement of control rotary valve, includes arranging in proper order and sets up piezoelectricity body, first piston cylinder body, second piston cylinder body and control rotary valve, be equipped with the first oil storage chamber that is used for storing fluid in the first piston cylinder body, be equipped with the second oil storage chamber that is used for storing fluid in the second piston cylinder body, be equipped with first piston in the first oil storage chamber, first piston on the first piston set firmly with piezoelectricity body fixed connection's first piston rod, the first piston cylinder body is equipped with the slip passageway of intercommunication first oil storage chamber towards the lateral wall of second piston cylinder body one side, be equipped with the second piston in the second oil storage chamber, set firmly on the second piston body wear to establish into the slip passageway and slide sealed second piston rod with it for the opposite side of first piston cylinder body, the second piston cylinder body on set firmly the intercommunication second oil storage chamber and drive vane pivoted fuel sprayer, the control rotary valve on the second oil storage chamber on the intercommunication have fuel feed pipe.
By adopting the technical scheme, the piezoelectric body can generate linear vibration after being electrified, the first piston is driven by the first piston rod to synchronously move, and when the piezoelectric body vibrates towards the direction of the first piston cylinder body, the first piston is driven by the first piston rod to move towards the direction of the second piston cylinder body, and oil liquid in the first piston cylinder body is extruded to generate pressure; the pressure generated by the oil liquid acts on the second piston rod, so that the second piston rod is driven to drive the second piston to move towards the direction of the vane and extrude the oil liquid in the second piston cylinder body, the oil liquid is sprayed out of the oil nozzle and acts on the vane, the vane is driven to rotate, and the rotation of the vane drives the control rotary valve to realize rotation.
When the piezoelectric body vibrates towards the direction opposite to the first piston cylinder body, the first piston is driven to move towards the direction of the piezoelectric body through the first piston rod, and the first oil storage cavity and the outside air generate pressure difference, so that the second piston is driven to move towards the direction of the first piston cylinder body, and the second oil storage cavity sucks oil into the second oil storage cavity through the oil supply pipe under the action of the pressure difference to supply the oil. The micro-scale vibration displacement of the piezoelectric body is amplified to centimeter-scale vibration displacement through the displacement of the first piston and the second piston, so that the micro-linear vibration generated by the piezoelectric body is converted into rotation of the control rotary valve.
Further provided is that: the first oil storage cavity penetrates through the first piston cylinder body towards the direction of the piezoelectric body to form a first opening, and the second oil storage cavity penetrates through the second piston cylinder body towards the direction of the first piston cylinder body to form a second opening.
Through adopting above-mentioned technical scheme, first open-ended and second open-ended setting makes first piston and second piston respectively when moving towards first opening and second opening direction, and first piston cylinder body can not produce pressure differential with the inside of second piston cylinder body to make piezoelectricity can drive first piston and second piston with less power and move towards the back of the body blade direction, thereby promote the conversion efficiency of piezoelectricity.
Further provided is that: the blade is wrapped with the isolation cover, the oil injection pipe penetrates through the isolation cover and is in sealing connection with the oil injection pipe, the valve core of the control rotary valve penetrates through the isolation cover and is fixedly connected with the blade, and the isolation cover is provided with the oil outlet.
Through adopting above-mentioned technical scheme, the setting of cage prevents that the fluid that acts on the blade from taking place to splash, guarantees the health of service environment, discharges the fluid that is located the cage inside through the setting of oil-out, guarantees the normal rotation of blade.
Further provided is that: the isolation cover comprises a sleeve sleeved on the blade and coaxially arranged with the blade and two sealing plates sealed at two ends of the sleeve, the free end of the oil injection pipe penetrates through the sleeve and is in sealing connection with the sleeve, the oil injection pipe faces the blade face of the blade through upward inclination of one end of the blade and orthographic projection of the nozzle, and the oil outlet is arranged in the sleeve.
By adopting the technical scheme, the blades can form whirling airflow in the rotating process, so that through the arrangement of the sleeve, the smoothness of the flowing of the whirling airflow is ensured, the rotation of the blades is smoother, and the conversion efficiency is improved; and the free end of the oil spray pipe is arranged in an inclined mode, so that the acting force applied by the oil spray pipe can better drive the blade to rotate.
Further provided is that: the oil supply pipe is connected with an oil supply tank, and a one-way valve for preventing oil from flowing towards the oil supply tank is fixedly arranged on the oil supply pipe.
Through adopting above-mentioned technical scheme, when the second piston extrudees the inside fluid of second oil storage chamber, the setting through the check valve makes fluid can not flow towards the oil pipe direction to increase the effort that the oil pipe applyed the blade, thereby drive blade carries out better rotation.
Further provided is that: the oil injection pipe sequentially comprises an inflow section, a decompression section communicated with the inflow section and a supercharging section communicated with the decompression section, wherein the diameter of the decompression section is larger than that of the inflow section, and the diameter of the supercharging section is smaller than that of the inflow section.
Through adopting above-mentioned technical scheme, the inside fluid of second oil storage chamber enters into the inflow section under the effect of second piston, and when the fluid in the inflow section enters into the decompression section, the fluid only need pack after the decompression section and just can flow to the pressure boost section, reduces the shape journey of inflow section through the setting of decompression section to reduce the effort that the second piston applyed to fluid. When the oil in the decompression section enters the supercharging section, the flow velocity increasing block pressure is increased, so that acting force exerted by the oil on the blades is improved, and the blades can rotate more quickly.
In summary, the invention has the following beneficial effects: according to the invention, through the cooperation of the first piston cylinder body, the second piston cylinder body and the blades, the piezoelectric body can drive the control rotary valve to realize rotation, so that the traditional driving structure is broken, and the piezoelectric rotary valve has the advantages of high precision, quick response, low power consumption, long service life, compact structure, environmental protection, energy conservation and the like; and the working frequency of the electro-hydraulic system can be greatly improved through the piezoelectric control rotary valve, so that the urgent actual requirements of engineering are met.
Drawings
FIG. 1 is a perspective view of an embodiment;
FIG. 2 is a cross-sectional view of an embodiment;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a partial exploded view of an embodiment.
In the figure: 1. a piezoelectric body; 2. a first piston cylinder; 3. a second piston cylinder; 4. controlling a rotary valve; 5. a first oil storage chamber; 6. a second oil storage chamber; 7. a first piston; 8. a first piston rod; 9. a slip path; 10. a second piston; 11. a second piston rod; 12. a blade; 13. an oil injection pipe; 131. an inflow section; 132. a pressure reducing section; 133. a boost section; 14. an oil supply pipe; 15. a first opening; 16. a second opening; 17. an isolation cover; 171. a sleeve; 172. a sealing plate; 18. an oil outlet; 19. an oil supply tank; 20. a one-way valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
Referring to fig. 1 and 2, a piezoelectric driving device for controlling a rotary valve comprises a piezoelectric body 1, a first piston cylinder body 2, a second piston cylinder body 3 and an isolation cover 17 which are fixedly arranged in sequence, wherein a first oil storage cavity 5 is formed in the first piston cylinder body 2, and a second oil storage cavity 6 is formed in the second piston cylinder body 3; the first oil storage chamber 5 penetrates the side of the first piston cylinder 2 facing the piezoelectric body 1 to form the first opening 15, and the second oil storage chamber 6 penetrates the side of the second piston cylinder 3 facing the first piston cylinder 2 to form the second opening 16. The first oil storage cavity 5 is internally provided with a first piston 7, one end face of the first piston 7, which faces the piezoelectric body 1, is fixedly arranged on a first piston rod 8 fixedly connected with the piezoelectric body 1, and the first oil storage cavity 5 is internally filled with oil at a position, close to the second piston cylinder body 3, of the first piston 7.
The outer side wall of the first piston cylinder body 2, which faces one side of the second piston cylinder body 3, is fixedly provided with a sliding channel 9 communicated with the first oil storage cavity 5, a second piston (10) is arranged in the second oil storage cavity 6, a second piston rod 11 inserted into the sliding channel 9 is fixedly arranged on one end face of the second piston (10), which faces the sliding channel 9, the second piston rod 11 and the sliding channel 9 are coaxially arranged and are in sliding sealing, and a sealing ring is fixedly arranged at the position, located inside the sliding channel 9, on the second piston rod 11. The outer side wall of the second piston cylinder body 3 facing the isolation cover 17 is fixedly provided with an oil injection pipe 13 communicated with the second oil storage cavity 6, and the free end of the oil injection pipe 13 penetrates into the isolation cover 17 and is fixedly connected with the isolation cover 17. The second piston cylinder body 3 is fixedly provided with an oil supply pipe 14 communicated with the second oil storage cavity 6, the free end of the oil supply pipe 14 is connected with an oil supply tank 19, and the oil supply pipe 14 is fixedly provided with a check valve 20.
Referring to fig. 3, the oil spray pipe 13 sequentially includes an inflow section 131, a decompression section 132 and a pressurization section 133 which are communicated with each other, and the three sections are integrally disposed, wherein the diameter of the inflow section 131 is smaller than that of the decompression section 132, and the diameter of the pressurization section 133 is smaller than that of the inflow section 131.
Referring to fig. 3 and 4, the shielding cover 17 includes a sleeve 171 having a cylindrical shape and two sealing plates 172, the sleeve 171 is provided with the blades 12 coaxially disposed therein, and the two sealing plates 172 are fixedly disposed at positions on both sides of the blades 12 on the end surfaces of the sleeve 171, so as to isolate the disposed blades 12 from the outside. The free end of the oil spray pipe 13 penetrates into the sleeve 171 and is fixedly connected with the sleeve, the free end of the oil spray pipe 13 is obliquely arranged upwards, the orthographic projection surface of the nozzle is arranged on the leaf surface of the blade 12, and the sleeve 171 is provided with the oil outlet 18. The outside of shrouding 172 has set firmly control rotary valve 4, and the case of control rotary valve 4 is worn to establish behind shrouding 172 and is fixed connection with the centre of a circle position of blade 12 for the rotation of blade 12 can drive the case of control rotary valve 4 and rotate.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (4)
1. A piezoelectric driving device for controlling a rotary valve, characterized in that: the device comprises a piezoelectric body, a first piston cylinder body, a second piston cylinder body and a control rotary valve which are sequentially arranged, wherein a first oil storage cavity for storing oil is formed in the first piston cylinder body, a second oil storage cavity for storing oil is formed in the second piston cylinder body, a first piston is arranged in the first oil storage cavity, a first piston rod fixedly connected with the piezoelectric body is fixedly arranged on the first piston, a sliding channel communicated with the first oil storage cavity is fixedly arranged on the outer side wall of the first piston cylinder body, which faces to one side of the second piston cylinder body, a second piston is arranged in the second oil storage cavity, a second piston rod penetrating through the sliding channel and sliding and sealing with the sliding channel is fixedly arranged on the second piston, a blade is arranged on the other side of the second piston cylinder body opposite to the first piston cylinder body, an oil injection pipe communicated with the second oil storage cavity and driving the blade to rotate is fixedly arranged on the second piston cylinder body, and the control rotary valve is driven to rotate by the blade, and an oil supply pipe is communicated with the second oil storage cavity;
the first piston cylinder body and the second piston cylinder body are provided with conical parts, the tips of the conical parts face the blades, and the volume of the first oil storage cavity is larger than that of the second oil storage cavity;
the oil supply pipe is connected with an oil supply tank, and a one-way valve for preventing oil from flowing towards the oil supply tank is fixedly arranged on the oil supply pipe;
the oil injection pipe sequentially comprises an inflow section, a decompression section communicated with the inflow section and a supercharging section communicated with the decompression section, wherein the diameter of the decompression section is larger than that of the inflow section, and the diameter of the supercharging section is smaller than that of the inflow section, so that oil is sprayed out from the oil injection nozzle and acts on the blades, and the blades are driven to rotate.
2. A piezoelectric driving device for controlling a rotary valve according to claim 1, wherein: the first oil storage cavity penetrates through the first piston cylinder body towards the direction of the piezoelectric body to form a first opening, and the second oil storage cavity penetrates through the second piston cylinder body towards the direction of the first piston cylinder body to form a second opening.
3. A piezoelectric driving device for controlling a rotary valve according to claim 1, wherein: the blade is wrapped with the isolation cover, the oil injection pipe penetrates through the isolation cover and is in sealing connection with the oil injection pipe, the valve core of the control rotary valve penetrates through the isolation cover and is fixedly connected with the blade, and the isolation cover is provided with the oil outlet.
4. A piezoelectric driving device for controlling a rotary valve according to claim 3, wherein: the isolation cover comprises a sleeve sleeved on the blade and coaxially arranged with the blade and two sealing plates sealed at two ends of the sleeve, the free end of the oil injection pipe penetrates through the sleeve and is in sealing connection with the sleeve, the oil injection pipe faces the blade face of the blade through upward inclination of one end of the blade and orthographic projection of the nozzle, and the oil outlet is arranged in the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549089.5A CN108591584B (en) | 2018-05-31 | 2018-05-31 | Piezoelectric driving device for controlling rotary valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549089.5A CN108591584B (en) | 2018-05-31 | 2018-05-31 | Piezoelectric driving device for controlling rotary valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108591584A CN108591584A (en) | 2018-09-28 |
| CN108591584B true CN108591584B (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810549089.5A Active CN108591584B (en) | 2018-05-31 | 2018-05-31 | Piezoelectric driving device for controlling rotary valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN108591584B (en) |
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| JPH10288115A (en) * | 1997-04-18 | 1998-10-27 | Nissan Motor Co Ltd | Fuel injection valve for engine |
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| CN102308132A (en) * | 2009-02-06 | 2012-01-04 | 发现技术国际股份有限公司 | Valves based on reversible piezoelectric rotary motor |
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| CN105545860A (en) * | 2016-01-20 | 2016-05-04 | 浙江大学 | Hydraulic control reversing rotating valve |
| CN106837900A (en) * | 2017-03-20 | 2017-06-13 | 温州大学 | The electro-hydraulic vibration exciter of cement pavement rubblizing apparatus |
| CN208281613U (en) * | 2018-05-31 | 2018-12-25 | 温州大学 | A kind of Piexoelectric actuator controlling rotary valve |
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| SG109502A1 (en) * | 2002-09-04 | 2005-03-30 | Panasonic Refrigeration Device | Piezo-electric compressor with displacement amplifier |
| DE102010025175A1 (en) * | 2010-06-25 | 2011-12-29 | Pierburg Gmbh | Infinitely adjustable pressure control valve |
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2018
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| US4655252A (en) * | 1980-03-24 | 1987-04-07 | Krumhansl Mark U | Valves |
| JPH10288115A (en) * | 1997-04-18 | 1998-10-27 | Nissan Motor Co Ltd | Fuel injection valve for engine |
| JP2005207323A (en) * | 2004-01-22 | 2005-08-04 | Denso Corp | Fuel injection device |
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| Publication number | Publication date |
|---|---|
| CN108591584A (en) | 2018-09-28 |
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