CN205679279U - A kind of self-powered pipe flow speed monitor - Google Patents
A kind of self-powered pipe flow speed monitor Download PDFInfo
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- CN205679279U CN205679279U CN201620626048.8U CN201620626048U CN205679279U CN 205679279 U CN205679279 U CN 205679279U CN 201620626048 U CN201620626048 U CN 201620626048U CN 205679279 U CN205679279 U CN 205679279U
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- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 31
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000003993 interaction Effects 0.000 abstract 1
- 229910000906 Bronze Inorganic materials 0.000 description 4
- 239000010974 bronze Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model relates to a kind of self-powered pipe flow speed monitor, belongs to fluid inspection field.Pipeline inner core is divided into chamber, left and right by dividing plate, and end, chamber, left and right is equipped with end cap, and left chamber is built with circuit board；End is equipped with driver and is cased with balancing spring and the multidiameter left half axle of limit spring stretches out through left end cap；Right axle shaft stretches into the right chamber equipped with transducer through dividing plate pilot hole；The piezoelectric chip of metal substrate and institute's bonding constitutes piezoelectric vibrator, and the ∏ type framework that two piezoelectric vibrators and two ends thereof are installed constitutes transducer；In right chamber, left and right sides piezoelectric vibrator is connected with the cushion pad on right end cap and right axle shaft respectively, and the adj acent piezoelectric oscillator of different transducers is connected through isolating pad.Advantage characteristic: utilize fluid structure interaction to realize generating and flow velocity measurement, real flow velocity on-line monitoring can be realized；Monitor configures along pipe lengths, and simple in construction, radial dimension are little, easily obtain required energy by many piezoelectric vibrators；Piezoelectric vibrator is rational in infrastructure, generated energy is big, reliability is high.
Description
Technical field
The utility model belongs to pipeline fluid monitoring technical field, is specifically related to a kind of self-powered pipe flow speed monitor.
Background technology
Because of fluids such as the petroleum and natural gases that the reasons such as spontaneous corrosion, nature force majeure and artificial pilferage are caused
Long distance pipeline happens occasionally in the incident of leakage of the process of use, frequently pipe leakage not only cause huge economic loss,
Cause serious pollution also to its periphery natural environment simultaneously.In the past, the method frequently with regular manual inspection was safeguarded,
But because oil and gas pipes lays distance and is often in uninhabited or part of having inconvenient traffic, regular visit is difficult to find in time to let out
Leakage is simultaneously safeguarded.Therefore, there has been proposed polytype for line leakage or burglary-resisting system.Although certain being proposed
A little pipe leakage or anti-theft monitoring alarm method at technological layer with more ripe, but current China long distance pipeline anti-theft monitoring system
Application also in the elementary step, not yet obtain large-area popularization and application, its one of the main reasons is the power supply of monitoring system
Problem fails to be well solved: 1) uses the method cost laying cable high and is easily cut off by lawless person and affect monitoring
System properly functioning；2) use battery to use limited time when powering, need to often change, once battery electric quantity not enough and not and
Also the remote transmission of monitoring information cannot be completed during Shi Genghuan；3) in recent years, for meet related wireless sensing monitoring system from
Power demands, people also proposed the turbine type microminiature TRT of various ways, and the problem of its maximum is structure complexity, body
Long-pending relatively large, it is unsuitable for the less occasion of pipe diameter, the TRT of some structure there is also the phenomenons such as electromagnetic interference, pushes away
Wide application receives certain restriction.Therefore, for making petroleum and natural gas pipe leakage and burglary-resisting system be used practically, need
First its powerup issue is solved.
Content of the invention
Power the problem existing for aspect for existing pipeline fluid condition monitoring system, the utility model proposes a kind of from
Power conduits flow monitoring instrument.The utility model adopted implementation scheme is that and is fixed with inner core through gusset on inner-walls of duct, pipe
Road, gusset and inner core constitute main body frame；It is provided with pilot hole and inner core is separated into left chamber and right chamber, left chamber by the dividing plate of wire guide
Internal through screw be provided with the circuit board of transmitter unit, end is provided with left end cap through screw；The left half axle of multidiameter is through a left side
End cap central bore is stretched out from left chamber, and left half axle end is provided with driver；It is cased with balancing spring and limit spring on left half axle, flat
Weighing apparatus two ends, spring left and right act against on driver and left end cap respectively, and two ends, limit spring left and right act against left end cap and rank respectively
The right axle shaft side of ladder axle；Right axle shaft stretches into right chamber through dividing plate pilot hole, is provided with slidably transducer, end inside right chamber
Being provided with right end cap through screw, right end cap side and right axle shaft end are all inlaid with cushion pad；With the metal substrate that circular arc is protruding
And the piezoelectric chip of institute's bonding constitutes piezoelectric vibrator, two piezoelectric vibrators and metal substrate two ends institute thereof on the convex surface of metal substrate
Two the ∏ type frameworks installed constitute transducer, and in same transducer, the metal substrate of two piezoelectric vibrators is near installation；Right chamber
The interior leftmost side is connected with the cushion pad on right axle shaft and right end cap respectively with the piezoelectric vibrator of the rightmost side, in two adjacent transducer
Adj acent piezoelectric oscillator is connected through isolating pad；During inoperative, in transducer, the limitting casing end on two ∏ type frameworks contacts with each other,
To avoid piezoelectric chip fragmentation because radius of curvature reduces；Between each piezoelectric vibrator through wire parallel with one another after again with circuit board even
Connecing, parallel connection refers to be connected with each other through wire, be connected with each other through wire between each metal substrate between each piezoelectric chip.
During work, when having fluid to flow through driver, between fluid and driver, generation is interacted.In some condition
The whirlpool that alternately can come off on the contrary and periodically in driver two row direction of rotation formed behind when lower fluid flows through driver,
Alternately coming off of whirlpool can cause the alternately change of fluid pressure, even if the fluid pressure differential of both sides alternately becomes before and after driver
Change, so that driver produces the of reciprocating vibration of left and right directions.For the utility model, the left and right of driver is of reciprocating vibration through rank
Ladder axle forces piezoelectric vibrator to be deformed, i.e. radius of curvature increases and reduces, thus converts mechanical energy into electric energy；Generated electricity
Can power for signal transmitter unit through the energy conversion of wire transmission to circuit board and storage circuit；Meanwhile, piezoelectric vibrator is given birth to
The quantity of the voltage waveform becoming also is extracted, and is used for characterizing rate of flow of fluid, and rate of flow of fluid signal is launched unit and launches
Go.
In the utility model, for making piezoelectric vibrator effectively to be encouraged, monitor is in nominal flow rate v0Piezoelectricity during lower work
The quiet deflection of oscillator is a diameter of D=(200～5000) μ/(the ρ v of the half of its maximum variable shape amount, driver0), in formula
ρ be fluid density, μ be fluid kinematic viscosity.In the utility model, the flow velocity of fluids within pipes is by piezoelectric vibrator in the unit interval
Generation voltage waveform quantity characterize, i.e. v=flD/St, S in formulatFor the coefficient related to structure and fluid property, D is excitation
Device diameter, flVibration frequency caused when flowing through driver by fluid, the voltage wave figurate number being generated in the unit interval.
In the utility model, for improving piezoelectric vibrator generating capacity and reliability, piezoelectric chip is 0.2～0.3mm's
PZT4, metal substrate are beryllium-bronze, and metal substrate is 1～2.5 with the ratio of the thickness of piezoelectric chip, now piezoelectric vibrator generating capacity
Compared with strong, energy comparison is big；Energy than refer to variant thickness than the produced electric energy of piezoelectric vibrator first order buckling deformation with wherein
Maximum bigger；PZT4 and the piezoelectric vibrator of beryllium-bronze substrate composition are utilized for the utility model, under nature
Reasonable radius of curvature at metal substrate and piezoelectric chip faying face is
Wherein α=hm/hpFor thickness ratio, hmAnd hpIt is respectively the thickness of metal substrate and piezoelectric chip.
Advantage and characteristic: utilize driver to realize that self-excited vibration generating and flow velocity are measured automatically with the coupling of fluid,
Without outside energy supply, without electromagnetic interference, the flow velocity real time on-line monitoring of real meaning can be realized；Monitor is along duct length
Direction configures, and simple in construction, radial dimension are little, it is easy to obtain required energy by using many piezoelectric vibrators；Piezoelectric vibrator structure
Rationally, deflection is controlled and each point stress distribution uniform, therefore generated energy is big, reliability is high.
Brief description
Fig. 1 is the structural representation of monitor in one preferred embodiment of the utility model；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the structural representation of main body frame in one preferred embodiment of the utility model；
Fig. 4 is the A-A sectional view of Fig. 3；
Fig. 5 is the structural representation of transducer in one preferred embodiment of the utility model；
Fig. 6 is the left view of Fig. 5.
Detailed description of the invention
Being fixed with inner core c through gusset b on the inwall of pipeline a, pipeline a, gusset b and inner core c constitute main body frame K；It is provided with
Inner core c is separated into left chamber c3 and right chamber c4 by the dividing plate c2 of pilot hole c5 and wire guide c6, is provided with through screw inside left chamber c3
Circuit board d with transmitter unit P, end are provided with left end cap k through screw；The left half axle m1 of multidiameter m is through the center of left end cap k
Hole is stretched out from left chamber c3, and left half axle m1 end is provided with driver n；It is cased with balancing spring j1 and limit spring on left half axle m1
J2, balancing spring about j1 two ends act against on driver n and left end cap k respectively, and about limit spring j2, two ends lean respectively
Side at the right axle shaft m2 of left end cap k and multidiameter m；Right axle shaft m2 stretches into right chamber c4, right chamber through the pilot hole c5 of dividing plate c2
Slidably transducer H, end are installed inside c4 and through screw, right end cap g, right end cap g side and right axle shaft m2 end are installed
It is all inlaid with cushion pad e；The piezoelectric chip h2 of institute's bonding on the convex surface of the metal substrate h1 protruding with circular arc and metal substrate h1
Constituting piezoelectric vibrator h, two ∏ type framework i that two piezoelectric vibrator h and metal substrate h1 two ends thereof are installed constitute transducer
H, in same transducer H, the metal substrate h1 of two piezoelectric vibrator h is near installation；The piezoelectricity of the leftmost side and the rightmost side in right chamber c4
Oscillator h is connected with the cushion pad e on right axle shaft m2 and right end cap g respectively, the adj acent piezoelectric oscillator h warp in two adjacent transducer H
Isolating pad f is connected；During inoperative, in transducer H, the end of the limitting casing i1 on two ∏ type framework i contacts with each other, to avoid pressure
Electricity wafer h2 fragmentation because radius of curvature reduces；Between each piezoelectric vibrator h through wire parallel with one another after be connected with circuit board d again,
Parallel connection refers to be connected with each other through wire, be connected with each other through wire between each metal substrate h1 between each piezoelectric chip h2.
During work, when having fluid to flow through driver n, between fluid and driver n, generation is interacted.At some
Can be at driver n two row direction of rotation formed behind whirlpool that is contrary and that periodically alternately come off when under part, fluid flows through driver n
Whirlpool, alternately coming off of whirlpool can cause the alternately change of fluid pressure, even if the fluid pressure differential of both sides replaces before and after driver n
Ground change, so that driver n produces the of reciprocating vibration of left and right directions.For the utility model, the left and right of driver n back and forth shakes
Dynamic through multidiameter m force piezoelectric vibrator h to be deformed, i.e. radius of curvature increases and reduces, thus converts mechanical energy into electric energy；
Generated electricity is changed and storage circuit through the energy of wire transmission to circuit board d, is that signal transmitter unit P powers；Meanwhile, press
The quantity of the voltage waveform that electric tachometer indicator h is generated also is extracted, and is used for characterizing rate of flow of fluid, and rate of flow of fluid signal is launched
Unit P launches.
In the utility model, for making piezoelectric vibrator h effectively to be encouraged, monitor is in nominal flow rate v0Piezoelectricity during lower work
The quiet deflection of oscillator h is a diameter of D=(200～5000) μ/(the ρ v of the half of its maximum variable shape amount, driver n0), formula
Middle ρ be fluid density, μ be fluid kinematic viscosity.In the utility model, the flow velocity of fluids within pipes is shaken by piezoelectricity in the unit interval
The generation voltage waveform quantity of son characterizes, and is v=flD/St, S in formulatFor the coefficient related to structure and fluid property, D is
The diameter of driver n, flVibration frequency caused when flowing through driver by fluid, the voltage wave being generated in the unit interval
Figurate number.
In the utility model, for improving generating capacity and the reliability of piezoelectric vibrator h, piezoelectric chip h2 is 0.2～0.3mm's
PZT4, metal substrate h1 are beryllium-bronze, and the ratio of the thickness of metal substrate h1 and piezoelectric chip h2 is 1～2.5, now piezoelectric vibrator h send out
Power compared with strong, energy comparison is big；Energy than refer to variant thickness than the produced electric energy of piezoelectric vibrator h first order buckling deformation with
Maximum therein bigger；PZT4 and the piezoelectric vibrator h of beryllium-bronze substrate composition are utilized for the utility model, under nature
Reasonable radius of curvature at metal substrate h1 and piezoelectric chip h2 faying face is
Wherein α=hm/hpFor thickness ratio, hmAnd hpIt is respectively the thickness of metal substrate h1 and piezoelectric chip h2.
Obviously, the utility model is to utilize driver and the coupling of fluid to realize that self-excited vibration generating and flow velocity are automatic
Measurement, it is not necessary to outside energy supply, without electromagnetic interference, can realize the flow velocity real time on-line monitoring of real meaning；Monitor is along pipe
Road length direction configuration, simple in construction, radial dimension are little, it is easy to obtain required energy by using many piezoelectric vibrators；Piezoelectricity shakes
Minor structure is reasonable, deflection is controlled and each point stress distribution uniform, therefore generated energy is big, reliability is high.
Claims (1)
1. a self-powered pipe flow speed monitor, it is characterised in that: is fixed with inner core through gusset in pipeline, be provided with pilot hole and
Inner core is separated into chamber, left and right by the dividing plate of wire guide, is provided with the circuit board of transmitter unit, end is provided with a left side inside left chamber
End cap；The left half axle of multidiameter stretches out from left chamber through left end cap centre bore, and left half axle end is provided with driver；Overlap on left half axle
Having balancing spring and limit spring, two ends, balancing spring left and right act against on driver and left end cap respectively, about limit spring
Two ends act against the right axle shaft side of left end cap and multidiameter respectively；Right axle shaft stretches into right chamber through dividing plate pilot hole, inside right chamber
Being provided with slidably transducer, end and being provided with right end cap, right end cap side and right axle shaft end are all inlaid with cushion pad；Band
On the protruding metal substrate of circular arc and metal substrate convex surface, the piezoelectric chip of institute's bonding constitutes piezoelectric vibrator, two piezoelectric vibrators and
Two ∏ type frameworks that its metal substrate two ends are installed constitute transducer, the Metal Substrate of two piezoelectric vibrators in same transducer
Plate is near installation；In right chamber, the leftmost side is connected with the cushion pad on right axle shaft and right end cap respectively with the piezoelectric vibrator of the rightmost side,
Adj acent piezoelectric oscillator in two adjacent transducer is connected through isolating pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626048.8U CN205679279U (en) | 2016-06-15 | 2016-06-15 | A kind of self-powered pipe flow speed monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626048.8U CN205679279U (en) | 2016-06-15 | 2016-06-15 | A kind of self-powered pipe flow speed monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205679279U true CN205679279U (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620626048.8U Expired - Fee Related CN205679279U (en) | 2016-06-15 | 2016-06-15 | A kind of self-powered pipe flow speed monitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332465A (en) * | 2017-08-17 | 2017-11-07 | 浙江师范大学 | A kind of piezoelectricity electromagnetic hybrid fluid energy accumulator |
| CN107356294A (en) * | 2017-08-17 | 2017-11-17 | 浙江师范大学 | A kind of long-range tap water meter |
| CN107356293A (en) * | 2017-08-17 | 2017-11-17 | 浙江师范大学 | A kind of tap water meter |
-
2016
- 2016-06-15 CN CN201620626048.8U patent/CN205679279U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332465A (en) * | 2017-08-17 | 2017-11-07 | 浙江师范大学 | A kind of piezoelectricity electromagnetic hybrid fluid energy accumulator |
| CN107356294A (en) * | 2017-08-17 | 2017-11-17 | 浙江师范大学 | A kind of long-range tap water meter |
| CN107356293A (en) * | 2017-08-17 | 2017-11-17 | 浙江师范大学 | A kind of tap water meter |
| CN107332465B (en) * | 2017-08-17 | 2023-06-16 | 浙江师范大学 | Piezoelectric-electromagnetic hybrid fluid energy harvester |
| CN107356294B (en) * | 2017-08-17 | 2023-07-28 | 浙江师范大学 | Remote running water meter |
| CN107356293B (en) * | 2017-08-17 | 2023-07-28 | 浙江师范大学 | Tap water meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20170615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |