CN102252666B - Gyro based on conical spiral flow pipe valve-pressure-free electric pump - Google Patents
Gyro based on conical spiral flow pipe valve-pressure-free electric pump Download PDFInfo
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- CN102252666B CN102252666B CN201110167553.2A CN201110167553A CN102252666B CN 102252666 B CN102252666 B CN 102252666B CN 201110167553 A CN201110167553 A CN 201110167553A CN 102252666 B CN102252666 B CN 102252666B
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- 238000005265 energy consumption Methods 0.000 abstract 1
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- 239000012528 membrane Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 6
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- 241000743339 Agrostis Species 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
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Abstract
The invention relates to a gyro based on a conical spiral flow pipe valve-pressure-free electric pump, which comprises a pump body hermetically consisting of an upper cover and a lower cover; a pump cavity for accommodating a piezoelectric vibrator is formed in the pump body, a conical table is fixedly arranged on the upper cover, and the bottom of the conical table is fixedly arranged on the upper cover; the lateral surface of the conical table is provided with a conical spiral flow pipe groove, a conical cover is sleeved outside the conical table, the top of the conical cover is open, a clearance is formed between the conical cover and the conical table, and first and second direct flow pipes are arranged in the conical table; one end of the conical spiral flow pipe groove is communicated with the clearance, the other end of the conical spiral flow pipe groove is communicated with the pump cavity, a piezoelectric film sensor is fixed at the top of the conical spiral flow pipe groove, and a lead is led out of the conical cover; and a first duct communicated with the clearance is fixed at the opening of the top of the conical cover. The gyro senses the angular velocity of external disturbance by measuring the output pressure of a pump through the piezoelectric film sensor, so that the conical spiral flow pipe valve-pressure-free electric pump has the property of the gyro. The gyro has the advantages of simple structure, wide manufacturing material source, low cost, easiness in implementation, low energy consumption, no electromagnetic interference, relatively high sensitivity and the like, and can be widely applied to posture control of civil carriers.
Description
Technical field
The present invention relates to a kind of gyro, relate in particular to a kind of gyro based on Valveless piezoelectric pump.
Background technology
The former rigid body that means High Rotation Speed of gyro, and generally can measure the angular velocity in relative inertness space now and the device of angular displacement is called gyro.Because gyro has the characteristic of independent navigation ability, so since coming out, just caused that people greatly pay close attention to, be one of technology of giving priority to of various countries always.Gyroscopic instrument not only can be used as indicating instrument, and the more important thing is that it can be used as a sensitive element in automatic control system, can be used as signal transducer.As required, gyroscope can provide the signal such as orientation, level accurately, so that driver or control the sail bodies such as aircraft, naval vessel or space shuttle with preset device by certain airline operation, and in the navigation of the sail bodies such as guided missile, satellite vehicle or space exploration rocket, directly utilize these signals to complete the attitude control of sail body.As stabilizator, gyroscopic instrument can make train travel on single track, can reduce boats and ships waving in stormy waves, and stablize etc. on the relative ground of camera that can make to be arranged on aircraft or satellite.As fine measuring instrument, gyroscope can provide azimuth reference accurately for surface facility, mining tunnel, subterranean railway, oil drilling and MISSILE LAUNCHING etc.As can be seen here, the range of application of gyro technology is quite widely, and it all accounts for consequence in modern national defense construction and the development of the national economy.
Although oneself has the history of more than 100 year so far in the birth of gyro, but at present owing to being subject to the restriction of the factors such as cost, technology, gyroscope is applied to the large-scale high performance Navigation And Guidance systems such as naval vessels, guided missile, aircraft mostly, the application that is used in civilian delivery vehicle aspect is little, therefore, invention makes that a kind of technology is simple, with low cost, can to widely apply the gyroscope on civilian delivery vehicle be very necessary.
Summary of the invention
Technical matters
It is simple that the technical problem to be solved in the present invention is to provide a kind of processing and fabricating, with low cost, and have a kind of gyro based on Valveless piezoelectric pump of conical spiral flow tube of better precision.Overcome existing gyro technical sophistication, cost high, can not widely apply the shortcoming on civilian delivery vehicle.
Technical scheme
In order to solve above-mentioned technical matters, gyro based on Valveless piezoelectric pump of conical spiral flow tube of the present invention comprises by upper cover and lower cover and seals the pump housing forming, in the pump housing, be provided with the pump chamber that accommodates piezoelectric vibrator, above cover and be fixedly installed taper platform, taper platform bottom is installed in and covers; The side of described taper platform is provided with the conic spiral flow tube seat that is centered around its axis, the outer sheathed cone-shaped hood of taper platform, cone-shaped hood top end opening and and taper platform between have a gap, in taper platform, be provided with the first battery tube that is communicated with described gap and above covers through hole, described through hole is communicated with pump chamber; Between described cone-shaped hood and taper platform, be interference fit, cone-shaped hood forms conic spiral flow pipe by the opening sealing of conic spiral flow tube seat; Taper platform is also provided with the second battery tube being communicated with the first battery tube; Conic spiral flow tube seat one end is communicated with gap, and the other end is communicated with pump chamber by the intercommunicating pore above covering; Taper platform top is fixed with a piezoelectric film sensor, described piezoelectric film sensor is fixedly mounted between gap and the first battery tube, the first battery tube is separated and is not communicated with gap, thus two runners of formation piezoelectric pump, and outside cone-shaped hood, draw wire; Cone-shaped hood top end opening place is fixed with the first conduit being communicated with gap, the second battery tube is connected with the second conduit, two fluid inlet and outlets that the first conduit and the second conduit are gyro of the present invention, the first conduit and the second conduit are arranged in parallel, and can bend as required, its openend be paralleled or perpendicular with the axis of taper platform.In the present invention, upper cover, lower cover, pump chamber, piezoelectric vibrator, the taper platform that is carved with taper chute, cone-shaped hood and piezoelectric film sensor form one and have the taper flow pipe Valveless piezoelectric pump of measuring pressure reduction function, i.e. gyro.Wherein, the principle of work of pump is: using piezoelectric ceramic piece and sheet metal as the two poles of the earth, to piezoelectric vibrator, apply alternating voltage, piezoelectric vibrator produces axial vibration under inverse piezoelectric effect, cause that pump chamber changes, drive fluid is coming and going and is flowing along cone-type spiral pipeline, battery tube; Fluid along cone-type spiral pipeline come and go mobile in, owing to being subject to earth rotation, the pump housing and being subject to disturbance to produce the impact of angular velocity and fluid self to move along conic spiral flow pipe, capital produces coriolis force, to producing not same-action along counterclockwise and right handed fluid, thereby the resistance difference that makes fluid flow and be subject in the travel directions by spiral sluice, making to have net flow in the whole cycle flows into and flows out from pump chamber, when piezoelectric vibrator continuous shaking, fluid will show as uniflux in macroscopic view, realizes the function of pump.
Described helical flow tube seat is connected with the intercommunicating pore above covering by a ramp pan, makes to be smoothly communicated with between this helical flow tube seat and pump chamber.
Usually, the first battery tube and pump body top cover are perpendicular, and the second battery tube is mutually vertical with the first battery tube again; The axis of the second battery tube should be between two sections of adjacent chutes of conic spiral flow tube seat, and extend to outside from taper platform inside.
On cover and be provided with positioning screw hole and circular pit, the bottom surface of taper platform is provided with the threaded hole corresponding with described positioning screw hole position, positioning screw hole matches circle is fixed in circular pit with threaded hole.
There is a round hole position corresponding with the second battery tube opening on cone-shaped hood, and this round hole makes the second battery tube extend to outside from taper platform inside.
The first conduit is communicated with gap by the manhole on cone-shaped hood, and cone-shaped hood is provided with a micropore, and the extended wire of piezoelectric film sensor goes out from this passing through micropores.
For reducing difficulty of processing, described conic spiral flow pipe slot cross-section is rectangular.
Described piezoelectric film force sensor is to be made by the piezoelectric with direct piezo electric effect, its principle is to utilize direct piezo electric effect to carry out realizable force electricity to transform, when piezoelectric is subject to mechanical stress, will produce electric polarization, thereby generation electric charge, the electric charge producing is directly proportional to mechanical stress.Utilize signal analysis device to carry out Measurement and analysis to produced electric signal, just can obtain the size of power.
Below in conjunction with accompanying drawing, principle of work of the present invention is described: gyroscopic apparatus of the present invention is fixed on a certain platform, set up the rectangular coordinate system in space as shown in Figure 10 (a): direction is X-axis from West to East, from the south orientation north, to being Y-axis, vertical earth's surface upward direction is Z axis.If the angular velocity of earth rotation at the component of Z axis is
angular velocity when fluid flows along conic spiral flow pipe is ω
2, when platform is subject to external disturbance, the angular velocity of generation is ω at the component of Z axis
z; The output pressure P of pump be by
ω
2, ω
zdetermine, therefore can be expressed as
To piezoelectric vibrator, apply alternating voltage, pump is started working.As shown in Figure 10 (b), when the relative earth surface of platform static (not being subject to external interference), i.e. ω=0 o'clock, due to
ω
2definite value, so now
be a steady state value, establishing this definite value is P
0; Now, to the height of piezoelectric membrane, the component on Z axis is h to the liquid level in the first conduit
1, to the height of piezoelectric membrane, the component on Z axis is h to the liquid level in the second conduit
2, P
0=(h
2-h
1) ρ g, wherein ρ is fluid density, g is acceleration of gravity.
When platform produces angular velocity because being subject to external interference, i.e. ω
z≠ 0, establish
now, the liquid level in the first conduit to the height of piezoelectric membrane the component on Z axis by h
1become
liquid level in the second conduit to the height of piezoelectric membrane the component on Z axis by h
2become
?
If Δ P=P-P
0, Δ P can be on the occasion of, can be also negative value and zero.Between Δ P (or P) and ω, exist corresponding relation, for each Δ P (or P) value, there is a ω corresponding, that is to say the output pressure P that measures Valveless piezoelectric pump of conical spiral flow tube by piezoelectric film sensor, the angle component ω on Z axis producing in the time of just can obtaining platform and be disturbed
z.
By two each 90-degree bents of conduit of this device, be fixed on platform, utilize the principle of above-described measurement pressure reduction, the angle component ω in Y-axis producing in the time of just can obtaining platform and be disturbed
y.
The angle component ω in X-axis producing when measuring table is disturbed
xprinciple with above identical.
In sum, this angular velocity that installs the generation of disturbance to external world has perception effect, and can, by measuring output pressure Δ P (or P), just can obtain the concrete numerical value of this angular velocity, has realized the function of gyro.
3. beneficial effect: the gyro based on Valveless piezoelectric pump of conical spiral flow tube of the present invention have simple in structure, make material source extensive, with low cost, be easy to realize, consume energy low, without electromagnetic interference (EMI), sensitivity compared with advantages of higher, can be widely used in the attitude control of civilian delivery vehicle.
Accompanying drawing explanation
The gyro one-piece construction vertical view of Fig. 1 based on Valveless piezoelectric pump of conical spiral flow tube;
The gyro one-piece construction A-A cut-open view of Fig. 2 based on Valveless piezoelectric pump of conical spiral flow tube;
Fig. 3 upper cover B-B cut-open view;
Fig. 4 upper cover front view;
Fig. 5 (a) lower cover front view (b) lower cover C-C cut-open view;
Fig. 6 (a) is carved with taper platform front view (b) D-D cut-open view (c) E of helical flow tube seat to view;
Fig. 7 (a) cone-shaped hood front view (b) F-F cut-open view;
The structural representation of Fig. 8 piezoelectric film sensor;
Fig. 9 (a) combined cone spiral flow tube front view (b) G-G cut-open view;
Figure 10 gyro to measure angular velocity omega
z(pump pressure is poor) principle schematic.
Embodiment
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 6, the gyro based on Valveless piezoelectric pump of conical spiral flow tube of the present embodiment, comprise by upper cover 13 and lower cover 14 and seal the pump housing forming, in the pump housing, be provided with the pump chamber 12 that accommodates piezoelectric vibrator 2, on upper cover 13, be fixedly installed taper platform 7, taper platform 7 bottoms are installed on upper cover 13, and upper cover 13 and lower cover 14 link together by bolt 11; Described taper platform 7 outside surfaces are provided with and are centered around its surperficial conic spiral flow tube seat 8, and the outer sheathed cone-shaped hood 6 of taper platform 7 forms conic spiral flow pipe thereby cone-shaped hood 6 is covered on the opening of conic spiral flow tube seat 8; Cone-shaped hood 6 top end openings and and taper platform 7 between have a gap, in taper platform 7, be provided with the first battery tube 16 that is communicated with through hole 15 on described gap and upper cover 13, described through hole 15 is communicated with pump chamber 12; Taper platform 7 is also provided with the second battery tube 26 being communicated with the first battery tube 16, and for fixedly mounting the second conduit 20, this conduit is as a gateway of pump; Conic spiral flow tube seat 8 one end are communicated with gap, and the other end is communicated with pump chamber 12 by the intercommunicating pore 3 on upper cover 13; Taper platform 7 tops are fixed with a piezoelectric film sensor 17, described piezoelectric film sensor 17 is fixedly mounted between gap and the first battery tube 16, the first battery tube 16 is separated and is not communicated with gap, thereby form two runners of piezoelectric pump, and outwards draw wire 30 by the small through hole 18 on cone-shaped hood 6; Cone-shaped hood 6 top end opening places are fixed with the first conduit 19 being communicated with gap, as another gateway of pump.
As shown in Fig. 6 (c), piezoelectric film sensor 17 is fixed in the stepped through hole 27 on the first battery tube 16 tops; The second battery tube 26 is also communicated with the first battery tube 16 is mutually vertical, and the second battery tube 26 is between two sections of adjacent chutes of conic spiral flow tube seat 8.As shown in Figure 7, correspondingly, there is a round hole 28 position corresponding with the second battery tube 26 openings on cone-shaped hood 6, and this round hole 28 makes the second battery tube 26 extend to outside from taper platform 7 inside.
The first conduit 19 and the second conduit 20 openends are arranged in parallel, and will bend as required, and openend is arranged to parallel or vertical with the axis of taper platform 7.
As shown in Fig. 3, Fig. 4, Fig. 6 (a), upper cover 13 is provided with positioning screw hole 22 and circular pit 12, the bottom surface of taper platform 7 is provided with the threaded hole 25 corresponding with described positioning screw hole 22 positions, and positioning screw hole 22 matches taper platform 7 is fixed in circular pit 12 with threaded hole 25.
As shown in Figure 5, piezoelectric vibrator 2 bondings are fixed on the ladder place of the stepped through hole 24 on lower cover 14.
As shown in Figure 6, described conic spiral flow tube seat 8 lower ends are communicated with intercommunicating pore 3 gently by ramp pan 10.
As shown in Fig. 7, Fig. 9, the first conduit 19 is communicated with gap by the manhole 9 on cone-shaped hood 6, and cone-shaped hood 6 is provided with a micropore 18, and the extended wire 30 of piezoelectric film sensor 17 passes from this micropore 18.
As shown in Figure 8, piezoelectric film force sensor consists of piezoelectric membrane 31, two-wire cable 30, little scale copper 33, conducting resinl 34, insulation and moisture-proofing film 29 etc., one deck conducting film is respectively being plated on the two sides of piezoelectric membrane 31; little scale copper 33 sticks on the surface of piezoelectric membrane; on the solder joint 32 of little scale copper 33, welded the good two-wire cable 30 of a kind of very thin elasticity, at piezoelectric membrane 31, two-wire cable 30, little scale copper 33, conducting resinl 34, scribbles insulation and damp-proof material.When the pressure on piezoelectric film sensor two sides is different, will make the both sides of piezoelectric membrane 31 produce electric charge, charge signal amplifies and changes into after electric signal through charge amplifier, through analog to digital converter, to computing machine, accepts analysis, calculates and provide test result.In the present invention, use piezoelectric film force sensor, measure the output pressure of pump.
For the ease of processing, the cross section of conic spiral flow tube seat 8 is rectangular.
In order to prevent in use procedure, the each junction of gyro produces fluid leaks, can evenly be coated with silica gel sealing in the junction of each parts.
In the present embodiment, upper cover 13, lower cover 14, cone-shaped hood 6 all adopt organic glass processing and manufacturing; The taper platform 7 that is carved with helical flow tube seat 8 can adopt aluminium processing and manufacturing, also can adopt organic glass processing and manufacturing; The first conduit 19, the second conduit 20 adopt commercially available, can intercept according to demand bending; Piezoelectric vibrator 2 adopts commercially available, and diameter is 50mm, the thick 0.1mm that is of piezoelectric ceramic piece and sheet metal, and the material of sheet metal is brass; Piezoelectric film sensor 17 adopts commercially available, and diameter is 10mm, and thickness is no more than 0.1mm; Bolt (nut) 11, screw 4 are commercially available standard component, and the specification of screw is M2 × 5, and the specification of bolt is M3 × 16, and what coordinate with bolt is that specification is the hexagonal nut of M3.
Claims (7)
1. the gyro based on Valveless piezoelectric pump of conical spiral flow tube, comprise by upper cover (13) and lower cover (14) and seal the pump housing forming, in the pump housing, be provided with the pump chamber (12) that accommodates piezoelectric vibrator (2), it is characterized in that, on upper cover (13), be fixedly installed taper platform (7), taper platform (7) bottom is installed on upper cover (13); Described taper platform (7) side is provided with the conic spiral flow tube seat (8) that is centered around its central shaft, the outer sheathed cone-shaped hood (6) of taper platform (7), cone-shaped hood (6) top end opening and and taper platform (7) between have a gap, in taper platform (7), be provided with the first battery tube (16) that is communicated with described gap and the upper through hole (15) of upper cover (13), described through hole (15) is communicated with pump chamber (12); Taper platform (7) is also provided with the second battery tube (26) being communicated with the first battery tube (16); Conic spiral flow tube seat (8) one end is communicated with gap, and the other end is communicated with pump chamber (12) by the intercommunicating pore (3) on upper cover (13); Taper platform (7) top is fixed with a piezoelectric film sensor (17), described piezoelectric film sensor (17) is fixedly mounted between gap and the first battery tube (16), the first battery tube (16) and gap are separated and be not communicated with, and draw wire (30) outside cone-shaped hood (6); Cone-shaped hood (6) top end opening place is fixed with the first conduit (19) being communicated with gap, and the second battery tube (26) is connected with the second conduit (20); Described the second battery tube (26) is positioned between two sections of chutes that conic spiral flow tube seat (8) is adjacent; Described the first conduit (19) is arranged in parallel with the second conduit (20), and openend all parallels with the axis of taper platform (7).
2. the gyro based on Valveless piezoelectric pump of conical spiral flow tube as claimed in claim 1, it is characterized in that, described conic spiral flow tube seat (8) is connected with the intercommunicating pore (3) on upper cover (13) by a ramp pan (10).
3. the gyro based on Valveless piezoelectric pump of conical spiral flow tube as claimed in claim 1, is characterized in that, the first battery tube (16) is mutually vertical with the second battery tube (26).
4. the gyro based on Valveless piezoelectric pump of conical spiral flow tube as claimed in claim 1, it is characterized in that, upper cover (13) is provided with positioning screw hole (22) and circular pit (12), the bottom surface of taper platform (7) is provided with the threaded hole (25) corresponding with described positioning screw hole (22) position, and positioning screw hole (22) matches taper platform (7) is fixed in circular pit (12) with threaded hole (25).
5. the gyro based on Valveless piezoelectric pump of conical spiral flow tube as claimed in claim 1, it is characterized in that, there is a round hole (28) the upper position corresponding with the second battery tube (26) opening of cone-shaped hood (6), and this round hole (28) makes the second battery tube (26) extend to outside from taper platform (7) inside.
6. the gyro based on Valveless piezoelectric pump of conical spiral flow tube as claimed in claim 1, it is characterized in that, the first conduit (19) is communicated with described gap by the manhole (9) on cone-shaped hood (6), cone-shaped hood (6) is provided with a micropore (18), and the extended wire of piezoelectric film sensor (17) (30) passes from this micropore (18).
7. the gyro based on Valveless piezoelectric pump of conical spiral flow tube as claimed in claim 1, is characterized in that, described conic spiral flow tube seat (8) cross section is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167553.2A CN102252666B (en) | 2011-06-21 | 2011-06-21 | Gyro based on conical spiral flow pipe valve-pressure-free electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167553.2A CN102252666B (en) | 2011-06-21 | 2011-06-21 | Gyro based on conical spiral flow pipe valve-pressure-free electric pump |
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| Publication Number | Publication Date |
|---|---|
| CN102252666A CN102252666A (en) | 2011-11-23 |
| CN102252666B true CN102252666B (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110167553.2A Expired - Fee Related CN102252666B (en) | 2011-06-21 | 2011-06-21 | Gyro based on conical spiral flow pipe valve-pressure-free electric pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114353777B (en) * | 2022-01-10 | 2023-04-07 | 长春汽车工业高等专科学校 | Piezoelectric synthesis jet gyroscope for balancing aircraft |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267836A (en) * | 1992-09-28 | 1993-12-07 | Rockwell International Corporation | Madreporitic resonant pump |
| EP1785652A1 (en) * | 2004-08-30 | 2007-05-16 | Star Micronics Co., Ltd. | Check valve and diaphragm pump |
| CN200955485Y (en) * | 2006-07-14 | 2007-10-03 | 北京工业大学 | Single-chip-type flow-pipe valve-free piezoelectric pump |
| CN202119438U (en) * | 2011-06-21 | 2012-01-18 | 南京航空航天大学 | Gyro of valveless piezoelectric pump based on conic spiral flow pipe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001221166A (en) * | 2000-02-10 | 2001-08-17 | Furuyama Akimi | Displacement type pump with spiral pipes and fluid transfer method |
| TWI256374B (en) * | 2004-10-12 | 2006-06-11 | Ind Tech Res Inst | PDMS valve-less micro pump structure and method for producing the same |
-
2011
- 2011-06-21 CN CN201110167553.2A patent/CN102252666B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267836A (en) * | 1992-09-28 | 1993-12-07 | Rockwell International Corporation | Madreporitic resonant pump |
| EP1785652A1 (en) * | 2004-08-30 | 2007-05-16 | Star Micronics Co., Ltd. | Check valve and diaphragm pump |
| CN200955485Y (en) * | 2006-07-14 | 2007-10-03 | 北京工业大学 | Single-chip-type flow-pipe valve-free piezoelectric pump |
| CN202119438U (en) * | 2011-06-21 | 2012-01-18 | 南京航空航天大学 | Gyro of valveless piezoelectric pump based on conic spiral flow pipe |
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| Title |
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| JP特开2001-221166A 2001.08.17 |
| 以PZT薄膜为驱动和传感的微型陀螺研制;马薇等;《压电与声光》;20010228;第23卷(第1期);第18-22页 * |
| 叶芳."Y"形流管无阀压电泵的研究.《中国优秀硕士学位论文全文数据库（工程科技Ⅱ辑）》.2011,(第6期), |
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