CN111237296A - Capillary throttling arrangement with adjustable hydraulic resistance based on piezoelectric actuator - Google Patents
Capillary throttling arrangement with adjustable hydraulic resistance based on piezoelectric actuator Download PDFInfo
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- CN111237296A CN111237296A CN202010017778.9A CN202010017778A CN111237296A CN 111237296 A CN111237296 A CN 111237296A CN 202010017778 A CN202010017778 A CN 202010017778A CN 111237296 A CN111237296 A CN 111237296A
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- piezoelectric actuator
- fixedly connected
- shell
- piston rod
- spring seat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C4/00—Circuit elements characterised by their special functions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a liquid resistance adjustable capillary throttling device based on a piezoelectric actuator, which comprises a shell with an opening at the lower end, wherein an oil outlet hole is formed in the upper end of the shell, a spiral ring groove f is formed in the middle of the inner wall of the shell, and an oil inlet hole is formed in the side surface, positioned on the spiral ring groove f, of the shell; a piston rod is movably embedded in the shell, a spiral ring groove g which is matched with the spiral ring groove f to form a capillary tube is arranged on the piston rod, the upper end of the piston rod is fixedly connected with a push plate, the other end of the push plate compresses a butterfly spring II arranged in a spring seat a, and the spring seat a is fixedly connected in the shell; the lower end of the piston rod is fixedly connected with a piezoelectric sensor, the lower end of the piezoelectric sensor is fixedly connected with a spring seat b, a first butterfly spring, a ball cushion block, a ball body and a lower connecting block are fixedly installed in the spring seat b, the lower end of the lower connecting block is fixedly connected with a piezoelectric actuator, the lower end of the piezoelectric actuator is connected with a thrust ball bearing, the thrust ball bearing is fixedly connected with an adjusting bolt, and the hydraulic resistance of the capillary tube can be adjusted by changing the.
Description
Technical Field
The invention belongs to the technical field of capillary throttlers, and relates to a liquid resistance adjustable capillary throttling device based on a piezoelectric actuator.
Background
With the continuous development of bearings, the throttler also develops in various ways. The restrictor is an element for controlling the flow of fluid to generate pressure drop, and the working principle is that the area of a cross section is reduced or increased to realize the adjustment of the flow.
The current throttler can be divided into a fixed throttler and a variable throttler. The fixed restrictor mainly comprises a small-hole restrictor, a capillary restrictor, a gap restrictor and the like, the variable restrictor mainly comprises a film feedback restrictor, a slide valve restrictor and the like, and the liquid resistance of the variable restrictor is not only related to the structural parameters of the restrictor, but also influenced by external conditions and changes frequently in the working process. The fixed restrictor is mainly characterized in that the hydraulic resistance is only related to the structural parameters of the restrictor. The working process is not changed along with the change of the external conditions. The operating state of the capillary restrictor is laminar flow, so this limits the operating conditions of the fixed restrictor.
Disclosure of Invention
The invention aims to provide a hydraulic resistance adjustable capillary throttling device based on a piezoelectric actuator, which solves the problems that the hydraulic resistance of a fixed throttling device in the prior art is only related to the structural parameters of the throttling device, does not change along with the change of external conditions in the working process, and the working conditions are limited.
The technical scheme adopted by the invention is that the hydraulic resistance adjustable capillary throttling device based on the piezoelectric actuator comprises a shell with an opening at the lower end, an oil outlet hole is formed in the upper end of the shell, a spiral ring groove f is formed in the middle of the inner wall of the shell, and an oil inlet hole is formed in the side surface, located on the spiral ring groove f, of the shell; a piston rod is movably embedded in the shell, a spiral ring groove g which is matched with the spiral ring groove f to form a capillary tube is arranged on the piston rod, the upper end of the piston rod is fixedly connected with a push plate, the other end of the push plate compresses a butterfly spring II arranged in a spring seat a, and the spring seat a is fixedly connected in the shell; the lower end of the piston rod is fixedly connected with a piezoelectric sensor, the lower end of the piezoelectric sensor is fixedly connected with a spring seat b, a first belleville spring, a ball cushion block, a ball body and a lower connecting block are fixedly installed in the spring seat b, the lower end of the lower connecting block is fixedly connected with a piezoelectric actuator, the lower end of the piezoelectric actuator is connected with a thrust ball bearing, and the thrust ball bearing is fixedly connected with an adjusting.
The invention is also characterized in that:
the spring seat a is fixedly connected to the upper end of the inner part of the shell through a bolt e.
And an adjusting nut is fixedly connected in the spring seat a at the lower part of the butterfly spring.
A baffle is also arranged between the second belleville spring arranged in the spring seat a and the push plate, and the baffle is arranged on the adjusting nut.
An O-shaped sealing ring is arranged on the outer side of the piston rod.
The upper end of the piston rod is fixedly connected with the push plate through four bolts c.
The lower end of the piston rod is in threaded connection with the piezoelectric sensor, the lower end of the piezoelectric sensor is in threaded connection with a spring seat b, a first butterfly spring, a ball cushion block, a ball body and a lower connecting block are sequentially and fixedly mounted in the spring seat b from top to bottom, and the lower end of the lower connecting block is in threaded connection with the piezoelectric actuator.
The lower end of the thrust ball bearing is fixedly embedded at the top end of the adjusting bolt, the end part of the screw is fixedly installed in the thrust ball bearing, and the threaded part of the screw is screwed in the threaded hole at the lower part of the piezoelectric actuator.
The invention has the beneficial effects that: the invention relates to a liquid resistance adjustable capillary throttling device based on a piezoelectric actuator, which has adjustable liquid resistance ratio and can form laminar flow throttling, a complete capillary loop can be formed by aligning a groove on the surface of a piston rod with a groove on the inner surface of a shell, and the liquid resistance of a capillary is changed by changing the length of a capillary flow passage, so that the use condition of a capillary throttling device is improved.
Drawings
FIG. 1 is a schematic structural diagram of a hydraulic resistance adjustable capillary throttling device based on a piezoelectric actuator according to the present invention;
fig. 2 is a sectional view of a hydraulic resistance adjustable capillary throttling device based on a piezoelectric actuator.
In the figure, 1, a shell, 2, spring seats a, 3, spiral ring grooves f, 4, bolts c, 5, a piston rod, 6, a piezoelectric sensor, 7, spring seats b, 8, a piezoelectric actuator, 9, a thrust ball bearing, 10, an adjusting bolt, 11, a screw, 12, a lower connecting block, 13, a ball body, 14, a ball cushion block, 15, a first belleville spring, 16, an O-shaped sealing ring, 17, spiral ring grooves g, 18, an oil inlet hole, 19, a push plate, 20, an adjusting nut, 21, a baffle, 22, a second belleville spring, 23, an oil outlet hole and 24, bolts e are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a liquid resistance adjustable capillary throttling device based on a piezoelectric actuator, which comprises a shell 1 with an opening at the lower end, as shown in figures 1 and 2, wherein an oil outlet hole 23 is formed in the upper end of the shell 1, a spiral ring groove f3 is formed in the middle of the inner wall of the shell 1, and an oil inlet hole 18 is formed in the side surface, positioned on the spiral ring groove f3, of the shell 1; a piston rod 5 is movably embedded in the shell 1, a spiral ring groove g17 which is matched with the spiral ring groove f3 to form a capillary tube is arranged on the piston rod 5, the upper end of the piston rod 5 is fixedly connected with a push plate 19, the other end of the push plate 19 compresses a second butterfly spring 22 arranged in a spring seat a2, and the spring seat a2 is fixedly connected in the shell 1; the lower end of the piston rod 5 is fixedly connected with a piezoelectric sensor 6, the lower end of the piezoelectric sensor 6 is fixedly connected with a spring seat b7, a first belleville spring 15, a ball cushion block 14, a ball body 13 and a lower connecting block 12 are fixedly arranged in the spring seat b7, the lower end of the lower connecting block 12 is fixedly connected with a piezoelectric actuator 8, the lower end of the piezoelectric actuator 8 is connected with a thrust ball bearing 9, and the thrust ball bearing 9 is fixedly connected with an adjusting bolt.
The spring seat a2 is fixed to the upper end of the inside of the housing 1 by a bolt e 24.
An adjusting nut 20 is fixedly connected in the spring seat a2 at the lower part of the second belleville spring 22, and the adjusting nut 20 is used for fixing the extending position of the second belleville spring 22.
A baffle plate 21 is also arranged between the second belleville spring 22 arranged in the spring seat a2 and the push plate 19, and the baffle plate 21 is arranged on the adjusting nut 20.
An O-shaped sealing ring 16 is arranged on the outer side of the piston rod 5, and the O-shaped sealing ring 16 plays a sealing role to ensure that no leakage or overflow is generated when oil enters the capillary tube.
The upper end of the piston rod 5 is fixedly connected with the push plate 19 through four bolts c 4.
The lower end of the piston rod 5 is in threaded connection with the piezoelectric sensor 6, the lower end of the piezoelectric sensor 6 is in threaded connection with a spring seat b7, a butterfly spring I15, a ball cushion block 14, a ball body 13 and a lower connecting block 12 are sequentially and fixedly installed in the spring seat b7 from top to bottom, and the lower end of the lower connecting block 12 is in threaded connection with the piezoelectric actuator 8.
The lower end of the thrust ball bearing 9 is fixedly embedded at the top end of the adjusting bolt 10, the end part of the screw 11 is fixedly installed in the thrust ball bearing 9, and the threaded part of the screw 11 is screwed in the threaded hole at the lower part of the piezoelectric actuator 8. The adjusting screw 10, which is used in conjunction with the piezoelectric actuator 8 for better operation of the throttle, performs a coarse adjustment. The piezoelectric actuator 8 is finely adjusted, when the piezoelectric actuator 8 works, the piston rod 5 moves, the piston rod 5 and the shell 1 form a complete capillary loop, and then the push plate 19 is driven to push against the belleville spring 22, so that the belleville spring 22 is compressed. The thrust ball bearing 9 is used for bearing the axial load generated by the adjusting bolt 10 and driving the piezoelectric actuator 8 to work.
The invention relates to a hydraulic resistance adjustable capillary throttling device based on a piezoelectric actuator, which has the following working principle:
when oil enters from the oil inlet hole 18, the adjusting bolt 10 is screwed to drive the thrust ball bearing 9 to start working, so that the piezoelectric actuator 8 is stressed to extend, the lower connecting block 12 pushes the ball 13 to make the ball cushion block 14 press the first belleville spring 15, the first belleville spring 15 is compressed to push the piezoelectric sensor 6 to move, the piston rod 5 moves upwards to drive the push plate 19 to also move upwards, the push plate 19 pushes against the baffle plate 21 to compress the second belleville spring 22, the spiral annular groove f3 on the piston rod 5 is aligned with the spiral annular groove g17 on the shell 1 to form a complete capillary loop, and the oil flows out through the capillary loop and finally through the oil outlet hole 23.
The invention relates to a liquid resistance adjustable capillary throttling device based on a piezoelectric actuator, which has the beneficial effects that: the liquid resistance ratio of the invention is adjustable, laminar flow throttling can be formed, a complete capillary loop can be formed by aligning the groove on the surface of the piston rod with the groove on the inner surface of the shell, the liquid resistance of the capillary is changed by changing the length of the capillary flow passage, and the use condition of the capillary throttling device is improved.
Claims (8)
1. A liquid resistance adjustable capillary throttling device based on a piezoelectric actuator is characterized by comprising a shell (1) with an opening at the lower end, wherein an oil outlet (23) is formed in the upper end of the shell (1), a spiral ring groove f (3) is formed in the middle of the inner wall of the shell (1), and an oil inlet (18) is formed in the side surface, located on the spiral ring groove f (3), of the shell (1); a piston rod (5) is movably embedded in the shell (1), a spiral ring groove g (17) which is matched with the spiral ring groove f (3) to form a capillary tube is arranged on the piston rod (5), the upper end of the piston rod (5) is fixedly connected with a push plate (19), the other end of the push plate (19) is compressed and installed on a second butterfly spring (22) in a spring seat a (2), and the spring seat a (2) is fixedly connected in the shell (1); the lower end of a piston rod (5) is fixedly connected with a piezoelectric sensor (6), the lower end of the piezoelectric sensor (6) is fixedly connected with a spring seat b (7), a butterfly spring I (15), a ball cushion block (14), a ball body (13) and a lower connecting block (12) are fixedly mounted in the spring seat b (7), the lower end of the lower connecting block (12) is fixedly connected with a piezoelectric actuator (8), the lower end of the piezoelectric actuator (8) is connected with a thrust ball bearing (9), and the thrust ball bearing (9) is fixedly connected with an adjusting bolt (10).
2. The hydraulic resistance adjustable capillary throttling device based on the piezoelectric actuator as claimed in claim 1, wherein the spring seat a (2) is fixedly connected to the upper end of the inside of the casing (1) through a bolt e (24).
3. The hydraulic resistance adjustable capillary throttling device based on the piezoelectric actuator as claimed in claim 1, wherein an adjusting nut (20) is fixedly connected in the spring seat a (2) at the lower part of the second butterfly spring (22).
4. The hydraulic resistance adjustable capillary throttling device based on the piezoelectric actuator as claimed in claim 3, wherein a baffle plate (21) is further installed between the second belleville spring (22) installed in the spring seat a (2) and the push plate (19), and the baffle plate (21) is installed on the adjusting nut (20).
5. The hydraulic resistance adjustable capillary throttling device based on the piezoelectric actuator as claimed in claim 1, characterized in that the outside of the piston rod (5) is provided with an O-shaped sealing ring (16).
6. The hydraulic resistance adjustable capillary throttling device based on the piezoelectric actuator as claimed in claim 1, wherein the upper end of the piston rod (5) is fixedly connected with the push plate (19) through four bolts c (4).
7. The hydraulic resistance adjustable capillary throttling device based on the piezoelectric actuator as claimed in claim 1, wherein the lower end of the piston rod (5) is in threaded connection with the piezoelectric sensor (6), the lower end of the piezoelectric sensor (6) is in threaded connection with the spring seat b (7), a first belleville spring (15), a ball cushion block (14), a ball body (13) and a lower connecting block (12) are sequentially and fixedly installed in the spring seat b (7) from top to bottom, and the lower end of the lower connecting block (12) is in threaded connection with the piezoelectric actuator (8).
8. The hydraulic resistance adjustable capillary throttling device based on the piezoelectric actuator is characterized in that the lower end of the thrust ball bearing (9) is fixedly embedded at the top end of the adjusting bolt (10), the end part of the screw (11) is fixedly installed in the thrust ball bearing (9), and the threaded part of the screw (11) is screwed in the threaded hole at the lower part of the piezoelectric actuator (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017778.9A CN111237296B (en) | 2020-01-08 | 2020-01-08 | Capillary throttling arrangement with adjustable hydraulic resistance based on piezoelectric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017778.9A CN111237296B (en) | 2020-01-08 | 2020-01-08 | Capillary throttling arrangement with adjustable hydraulic resistance based on piezoelectric actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111237296A true CN111237296A (en) | 2020-06-05 |
| CN111237296B CN111237296B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010017778.9A Active CN111237296B (en) | 2020-01-08 | 2020-01-08 | Capillary throttling arrangement with adjustable hydraulic resistance based on piezoelectric actuator |
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| CN (1) | CN111237296B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461517A (en) * | 1981-11-11 | 1984-07-24 | Carl-Zeiss-Stiftung | Throttle for gas bearings |
| EP0504465A1 (en) * | 1991-03-21 | 1992-09-23 | MOOG GmbH | Fluid transducer with piezo-electric actuator |
| CN102042426A (en) * | 2009-10-26 | 2011-05-04 | 怀特(中国)驱动产品有限公司 | Bypass-valve/flush valve of closed type hydraulic loop |
| TW201216027A (en) * | 2010-10-01 | 2012-04-16 | Univ Chung Yuan Christian | Double-membrane-type restrictor with capillary calibration |
| TW201250139A (en) * | 2011-06-07 | 2012-12-16 | Univ Chung Yuan Christian | The screw-type capillary module with restriction length being adjustable |
| TW201300668A (en) * | 2011-06-29 | 2013-01-01 | 私立中原大學 | Spool-type constant-flow valve |
| TW201721034A (en) * | 2015-12-09 | 2017-06-16 | Prec Machinery Res & Dev Center | Intelligent hydrostatic pressure throttling module and method capable of actively adjusting throttling liquid resistance and compensating oil chamber pressure |
| CN109909758A (en) * | 2019-03-22 | 2019-06-21 | 厦门大学 | A kind of two chamber closed hydrostatic slideway sliding block modules |
| CN110259825A (en) * | 2019-06-06 | 2019-09-20 | 厦门大学 | Throttling ratio real-time, tunable annular cylinder Slot Aperture Restrictor |
-
2020
- 2020-01-08 CN CN202010017778.9A patent/CN111237296B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461517A (en) * | 1981-11-11 | 1984-07-24 | Carl-Zeiss-Stiftung | Throttle for gas bearings |
| EP0504465A1 (en) * | 1991-03-21 | 1992-09-23 | MOOG GmbH | Fluid transducer with piezo-electric actuator |
| CN102042426A (en) * | 2009-10-26 | 2011-05-04 | 怀特(中国)驱动产品有限公司 | Bypass-valve/flush valve of closed type hydraulic loop |
| TW201216027A (en) * | 2010-10-01 | 2012-04-16 | Univ Chung Yuan Christian | Double-membrane-type restrictor with capillary calibration |
| TW201250139A (en) * | 2011-06-07 | 2012-12-16 | Univ Chung Yuan Christian | The screw-type capillary module with restriction length being adjustable |
| TW201300668A (en) * | 2011-06-29 | 2013-01-01 | 私立中原大學 | Spool-type constant-flow valve |
| TW201721034A (en) * | 2015-12-09 | 2017-06-16 | Prec Machinery Res & Dev Center | Intelligent hydrostatic pressure throttling module and method capable of actively adjusting throttling liquid resistance and compensating oil chamber pressure |
| CN109909758A (en) * | 2019-03-22 | 2019-06-21 | 厦门大学 | A kind of two chamber closed hydrostatic slideway sliding block modules |
| CN110259825A (en) * | 2019-06-06 | 2019-09-20 | 厦门大学 | Throttling ratio real-time, tunable annular cylinder Slot Aperture Restrictor |
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| CN111237296B (en) | 2023-04-18 |
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