CN106018870A - Intelligent pipeline flow velocity monitor - Google Patents
Intelligent pipeline flow velocity monitor Download PDFInfo
- Publication number
- CN106018870A CN106018870A CN201610459668.1A CN201610459668A CN106018870A CN 106018870 A CN106018870 A CN 106018870A CN 201610459668 A CN201610459668 A CN 201610459668A CN 106018870 A CN106018870 A CN 106018870A
- Authority
- CN
- China
- Prior art keywords
- fluid
- piezoelectric vibrator
- activator
- flow velocity
- piezoelectric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/01—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by using swirlflowmeter
Abstract
The invention relates to an intelligent pipeline flow velocity monitor, and belongs to the field of fluid monitoring. An inner tube in a pipeline is divided into a left cavity and a right cavity by a separator plate. The left cavity is internally provided with a circuit board, and the end portion thereof is equipped with a left end cover; left and right half shafts of a pin shaft are sleeved by a buffer spring and a balance spring respectively; the left half shaft extends out of the left end cover, and the end portion thereof is equipped with an exciter; the right half shaft extends into the right cavity from the separator plate; a right end cover enables two outer frames and at least one inner frame to be pressed in the right cavity; a metal substrate is pressed between the adjacent inner and outer frames and between the inner frames; a cantilever beam of each metal substrate is bonded with a piezoelectric wafer to form a piezoelectric vibrator, and the other end of the cantilever beam is fixed to the right half shaft; and one side of each outer frame and the two sides of each inner frame are provided with a limit surface and a sediment groove. The advantages are that power generation and flow velocity automatic measurement are realized synchronously through a coupling effect, and thus online monitoring of the flow velocity can be realized in a true sense; the monitor, configured along the length direction of the pipeline, is simple in structure and small in radial dimension, and can obtain required energy through the multiple piezoelectric vibrators easily; and each piezoelectric vibrator is reasonable in structure, large in generated energy and high in reliability.
Description
Technical field
The invention belongs to pipeline fluid monitoring technical field, be specifically related to a kind of intelligent pipeline flow monitoring instrument.
Background technology
Owing to the fluid length such as the petroleum and natural gas that the reasons such as spontaneous corrosion, nature act of god and artificial pilferage are caused are defeated
Pipeline happens occasionally in the incident of leakage of the process of use, and pipe leakage not only causes huge economic loss, the most frequently
Serious pollution is caused to its periphery natural environment.In the past, the method frequently with regular manual inspection is safeguarded, but because of oil
Feed channel is laid distance and is often in uninhabited or part of having inconvenient traffic, and regular visit is difficult to find in time leakage in addition
Safeguard.Therefore, there has been proposed polytype for line leakage or burglary-resisting system.Although some pipeline proposed is let out
Leakage or anti-theft monitoring alarm method are at technological layer with more ripe, but at present the application of China's long distance pipeline anti-theft monitoring system is also located
In the elementary step, not yet obtaining large-area popularization and application, its one of the main reasons is that the powerup issue of monitoring system fails to obtain
Well solve: 1) use the method cost laying cable high and easily cut off by lawless person and affect the properly functioning of monitoring system；
2) battery is used to use limited time when powering, need to often change, not enough once battery electric quantity and change the most in time also cannot be complete
Become the remote transmission of monitoring information；3) in recent years, for meeting the self-powered demand of relevant wireless sensing monitoring system, people also carry
Having gone out the turbine type microminiature TRT of various ways, the problem of its maximum is that structure is complicated, volume is relatively large, is unsuitable for
The occasion that pipe diameter is less, the TRT of some structure there is also the phenomenons such as electromagnetic interference, and popularization and application receive certain
Restriction.Therefore, for making petroleum and natural gas pipe leakage and burglary-resisting system be used practically, still need to first solve its power supply and ask
Topic.
Summary of the invention
Powering the problem existing for aspect for existing pipeline fluid condition monitoring system, the present invention proposes a kind of intelligent pipeline flow velocity
Monitor.The present invention adopted implementation scheme is that inner-walls of duct is fixed with inner core through gusset, and pipeline, gusset and inner core constitute main
Body framework；Being provided with dividing plate inside inner core barrel, inner core is separated into left chamber and right chamber by dividing plate；Dividing plate is provided with pilot hole and cabling
Hole；Left intracavity is fixed with the circuit board of band transmitter unit through screw, end is provided with left end cap through screw；The bearing pin shaft shoulder is by bearing pin
It is divided into left half axle and right axle shaft, left and right semiaxis is cased with buffer spring and balancing spring respectively；Left half axle through left end cap centre bore from
Left chamber is stretched out, and left half axle end is provided with activator；Right axle shaft stretches into right chamber from the pilot hole of dividing plate, and end, right chamber is pacified through screw
Equipped with right end cap, two housings and at least one inside casing are crimped on right intracavity by right end cap；Between housing and adjacent inside casing, with
And all it is crimped with metal basal board between two adjacent inside casings, the metal cantilever beams on metal basal board and bonding piezoelectric chip structure
Becoming piezoelectric vibrator, the other end of metal cantilever beams is fixed on right axle shaft through nut, short sleeve and long axle sleeve；The side of housing and
The both sides of inside casing are designed with shape yardstick and the identical confined planes of quantity and deep gouge；Deep gouge is used for accommodating piezoelectric chip, its plane meter
Very little more than piezoelectric chip, less than metal cantilever beams；Confined planes is used for limiting piezoelectric vibrator deflection, confined planes be arc surface and its
Reasonably radius of curvature depends on metal basal board and the material of piezoelectric chip and thickness；Between each piezoelectric vibrator parallel with one another through wire
After be connected with circuit board again, parallel connection refers to be connected with each other through wire between each piezoelectric chip, mutual through wire between each metal basal board
Connect.
During work, when having fluid to flow through activator, between fluid and activator, generation is interacted.Under certain conditions,
Can be at activator two row direction of rotation formed behind whirlpool that is contrary and that periodically alternately come off, whirlpool when fluid flows through activator
Alternately come off and can cause the alternate of fluid pressure, even if the fluid pressure differential of both sides alternately changes before and after activator, from
And make activator produce the of reciprocating vibration of left and right directions.For the present invention, activator left and right is of reciprocating vibration forces piezoelectricity to shake through bearing pin
Son produces flexural deformation, thus converts mechanical energy into electric energy；Generated electricity through wire transmission to circuit board energy change with
Storage circuit, powers for signal transmitter unit；Meanwhile, the quantity of the voltage waveform that piezoelectric vibrator is generated also is extracted,
For characterizing rate of flow of fluid, rate of flow of fluid signal is launched unit and launches.
In the present invention, for making piezoelectric vibrator effectively to be encouraged, should meet when monitor works under nominal flow rate: suffered by bearing pin
Fluid force FlEqual to suffered equilibrium bomb spring force FpWith buffering elastic spring force FhDifference, i.e. Fl=Fp-Fh, the quiet deformation of piezoelectric vibrator
Amount is zero and a diameter of D=of activator (200～5000) μ/(ρ v0), in formula D be the diameter of activator, ρ be fluid density, μ
For fluid kinematic viscosity, v0For pipeline nominal flow rate.
In the present invention, the flow velocity of fluids within pipes is characterized by the generation voltage waveform quantity of piezoelectric vibrator in the unit interval, is
V=flD/Si, S in formulaiFor the coefficient relevant to structure and fluid property, D is activator diameter, flActivator is flow through for fluid
Time caused frequency of vibration, unit interval in the voltage wave figurate number that generated.
In the present invention, for improving piezoelectric vibrator generating capacity and reliability, piezoelectric chip is PZT4, the Metal Substrate of 0.2～0.3mm
Plate is beryllium-bronze, and metal basal board is 1～2.5 with the thickness ratio of piezoelectric chip, and now the generating capacity of piezoelectric vibrator is relatively strong, energy ratio
Bigger；Energy deforms the ratio of produced electric energy and maximum therein than the piezoelectric vibrator first order buckling referring to variant thickness ratio
Bigger；Utilizing PZT4 and the piezoelectric vibrator of beryllium-bronze substrate composition for the present invention, the reasonable radius of curvature of confined planes isWherein α=hm/hpFor thickness ratio, hmAnd hpBe respectively metal basal board and
Piezoelectric chip thickness.
Advantage and characteristic: Tong Bu realization generating is powered and flow velocity is measured automatically with the coupling of fluid to utilize activator, it is not necessary to outer
The supply of boundary energy and sensor, without electromagnetic interference, the flow velocity real time on-line monitoring of real meaning can be realized；Monitor is long along pipeline
The configuration of degree direction, simple in construction, radial dimension are little, it is easy to by using many piezoelectric vibrators to obtain required energy；Piezoelectric vibrator is tied
Structure is rationally, deflection is restricted by confined planes and each point Deformation Curvature is equal, therefore generated energy is big, reliability is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of monitor in a preferred embodiment of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the I portion enlarged drawing of Fig. 1；
Fig. 4 is the A-A sectional view of Fig. 1；
Fig. 5 is the structural representation of main body frame in a preferred embodiment of the present invention；
Fig. 6 is the structural representation of housing in a preferred embodiment of the present invention；
Fig. 7 is the right view of Fig. 6；
Fig. 8 is the structural representation of inside casing in a preferred embodiment of the present invention；
Fig. 9 is the right view of Fig. 8.
Detailed description of the invention
It is fixed with inner core c, pipeline a, gusset b and inner core c through gusset b on the inwall of pipeline a and constitutes main body frame K；Inner core
It is provided with dividing plate c2, dividing plate c2 inside the barrel c1 of c and inner core c is separated into left chamber c3 and right chamber c4；Dividing plate c2 is provided with and leads
To hole c5 and cable hole c6；Be fixed with the circuit board d of band transmitter unit P through screw in left chamber c3, end is provided with through screw
Left end cap k；Bearing pin m is divided into left half axle m2 and right axle shaft m3, left half axle m2 and right axle shaft by the shaft shoulder m1 on bearing pin m
Buffer spring j1 and balancing spring j2 it is cased with respectively on m3；Left half axle m2 stretches out from left chamber c3 through the centre bore of left end cap k,
Left half axle m2 end is provided with activator n；Right axle shaft m3 pilot hole c5 from dividing plate c2 stretches into right chamber c4, right chamber c4
End through screw, right end cap g, right end cap g are installed two housing e and at least one inside casing f are crimped in right chamber c4；
Metal basal board h1, metal basal board h1 all it is crimped with between housing e and adjacent inside casing f and between two adjacent inside casing f
On metal cantilever beams h11 and bonding piezoelectric chip h2 constitute piezoelectric vibrator h, the other end of metal cantilever beams h11 is through spiral shell
Female p, short sleeve i ' and long axle sleeve i is fixed on right axle shaft m3；The side of housing e and the both sides of inside casing f are designed with shape chi
Degree and the identical confined planes M of quantity and deep gouge C；Deep gouge C is used for accommodating piezoelectric chip h2, and its planar dimension is more than piezo crystals
Sheet h2, less than metal cantilever beams h11；Confined planes M is for limiting the deflection of piezoelectric vibrator h, and confined planes M is arc surface
And its rational radius of curvature depends on metal basal board h1 and the material of piezoelectric chip h2 and thickness；Warp between each piezoelectric vibrator h
Being connected with circuit board d after wire is parallel with one another, parallel connection refers to be connected with each other through wire between each piezoelectric chip h2, each Metal Substrate again
It is connected with each other through wire between plate h1.
During work, when having fluid to flow through activator n, between fluid and activator n, generation is interacted.In some condition
The whirlpool that alternately can come off on the contrary and periodically in activator n two row direction of rotation formed behind when lower fluid flows through activator n,
Alternately coming off of whirlpool can cause the alternate of fluid pressure, even if the fluid pressure differential of both sides alternately becomes before and after activator n
Change, so that activator n produces the of reciprocating vibration of left and right directions.For the present invention, the left and right of activator n is of reciprocating vibration sells
Axle m forces piezoelectric vibrator h to produce flexural deformation, thus converts mechanical energy into electric energy；Generated electricity through wire transmission to electricity
The energy conversion of road plate d and storage circuit, power for signal transmitter unit P；Meanwhile, the voltage wave that piezoelectric vibrator h is generated
The quantity of shape is also extracted, and is used for characterizing rate of flow of fluid, and rate of flow of fluid signal is launched unit P and launches.
In the present invention, for making piezoelectric vibrator h effectively to be encouraged, monitor is in nominal flow rate v0Should meet during lower work: bearing pin
Fluid force F suffered by mlEqual to suffered equilibrium bomb spring force FpWith buffering elastic spring force FhDifference, i.e. Fl=Fp-Fh, piezoelectric vibrator
The quiet deflection of h is zero and a diameter of D=of activator n (200～5000) μ/(ρ v0), in formula, D is the diameter of activator, ρ
It is fluid kinematic viscosity for fluid density, μ.
In the present invention, the flow velocity of fluids within pipes is characterized by the generation voltage waveform quantity of piezoelectric vibrator in the unit interval, is
V=flD/Si, S in formulaiFor the coefficient relevant to structure and fluid property, D is activator diameter, flActivator is flow through for fluid
Time caused frequency of vibration, unit interval in the voltage wave figurate number that generated.
In the present invention, for improving the generating capacity of piezoelectric vibrator h and reliability, piezoelectric chip h2 be 0.2～0.3mm PZT4,
Metal basal board h1 is beryllium-bronze, the ratio of the thickness of metal basal board h1 and piezoelectric chip h2 is 1～2.5, now piezoelectric vibrator h
Generating capacity compared with strong, energy comparison is big；Energy is more produced than the piezoelectric vibrator h first order buckling referring to variant thickness ratio deforms
Electric energy is bigger with maximum therein；PZT4 and the piezoelectric vibrator h of beryllium-bronze substrate composition are utilized for the present invention, spacing
The reasonable radius of curvature of face M isWherein α=hm/hpFor thickness ratio, hm
And hpIt is respectively metal basal board h1 and the thickness of piezoelectric chip h2.
Obviously, the present invention is to utilize the coupling of activator and fluid to generate electricity and realize flow velocity automatically to measure, it is not necessary to outside energy
Supply and sensor, without electromagnetic interference, the flow velocity real time on-line monitoring of real meaning can be realized；Monitor is along pipe lengths
Configuration, simple in construction, radial dimension are little, it is easy to by using many piezoelectric vibrators to obtain required energy；Piezoelectric vibrator is rational in infrastructure,
Deflection is equal by confined planes restriction and each point Deformation Curvature, therefore generated energy is big, reliability is high.
Claims (1)
1. an intelligent pipeline flow monitoring instrument, it is characterised in that: inner-walls of duct is fixed with inner core through gusset, is provided with pilot hole and cabling
Inner core is separated into left chamber and right chamber by the dividing plate in hole；Left intracavity portion is provided with the circuit board of transmitter unit, end is provided with a left side
End cap；Bearing pin is divided into left half axle and right axle shaft by the bearing pin shaft shoulder, and left and right semiaxis is cased with buffer spring and balancing spring respectively；Left
Semiaxis stretches out from left chamber through left end cap centre bore, end is provided with activator；Right axle shaft stretches into right chamber, right chamber from dividing plate pilot hole
End is provided with right end cap, and two housings and at least one inside casing are crimped on right intracavity by right end cap；Housing and adjacent inside casing it
Between and two adjacent inside casings between be all crimped with metal basal board, the metal cantilever beams on metal basal board and bonding piezoelectric chip
Constituting piezoelectric vibrator, the other end of metal cantilever beams is fixed on right axle shaft；Housing side and inside casing both sides are designed with shape yardstick
And the identical confined planes of quantity and deep gouge, deep gouge planar dimension is more than piezoelectric chip, less than metal cantilever beams, and confined planes is circular arc
Face；It is connected with circuit board again after wire is parallel with one another between each piezoelectric vibrator；Fluid force suffered by nominal flow rate lower bearing pin is equal to institute
By equilibrium bomb spring force with the difference of buffering elastic spring force, the quiet deflection of piezoelectric vibrator is zero and activator is a diameter of
D=(200～5000) μ/(ρ v0), the flow velocity of measured fluids within pipes is v=flD/St, in formula ρ be fluid density, μ be fluid
Dynamic viscosity, StFor the coefficient relevant to structure and fluid property, flFrequency of vibration caused when flowing through activator for fluid,
v0For nominal flow rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459668.1A CN106018870B (en) | 2016-06-15 | 2016-06-15 | A kind of intelligent pipeline flow monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459668.1A CN106018870B (en) | 2016-06-15 | 2016-06-15 | A kind of intelligent pipeline flow monitoring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106018870A true CN106018870A (en) | 2016-10-12 |
| CN106018870B CN106018870B (en) | 2018-07-17 |
Family
ID=57087197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610459668.1A Active CN106018870B (en) | 2016-06-15 | 2016-06-15 | A kind of intelligent pipeline flow monitoring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106018870B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843742A (en) * | 2017-11-28 | 2018-03-27 | 佛山科学技术学院 | A kind of chemical liquid delivery pipe flow velocity induction structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090211368A1 (en) * | 2008-02-26 | 2009-08-27 | Rosemount, Inc. | Sensor tube with reduced coherent vortex shedding |
| CN104485849A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Channel flow generator applied to remote meter reading system |
| CN104485851A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Pulling and pressing type vibration energy harvester |
| CN104868785A (en) * | 2015-04-30 | 2015-08-26 | 沈阳化工大学 | Cylindrical vortex-induced vibration generation device with built-in piezoelectric beam |
| CN105006991A (en) * | 2015-07-22 | 2015-10-28 | 上海交通大学 | Laminated piezoelectric downhole energy collection device |
-
2016
- 2016-06-15 CN CN201610459668.1A patent/CN106018870B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090211368A1 (en) * | 2008-02-26 | 2009-08-27 | Rosemount, Inc. | Sensor tube with reduced coherent vortex shedding |
| CN104485849A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Channel flow generator applied to remote meter reading system |
| CN104485851A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Pulling and pressing type vibration energy harvester |
| CN104868785A (en) * | 2015-04-30 | 2015-08-26 | 沈阳化工大学 | Cylindrical vortex-induced vibration generation device with built-in piezoelectric beam |
| CN105006991A (en) * | 2015-07-22 | 2015-10-28 | 上海交通大学 | Laminated piezoelectric downhole energy collection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843742A (en) * | 2017-11-28 | 2018-03-27 | 佛山科学技术学院 | A kind of chemical liquid delivery pipe flow velocity induction structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106018870B (en) | 2018-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106443054A (en) | Pipe flow velocity monitor | |
| CN105953082B (en) | A kind of self-powered oil-gas pipeline monitoring device | |
| CN105974153A (en) | Intelligent channel flow monitor based on piezoelectric beam | |
| CN105958867B (en) | A kind of auto-excitation type pipeline fluid piezoelectric harvester | |
| CN105940286B (en) | For detecting the sensor of the pressure wave in liquid | |
| CN107332473B (en) | Piezoelectric vibration type pipeline flow generator | |
| US20130119669A1 (en) | Method and device for harvesting energy from fluid flow | |
| CN106100444B (en) | A kind of piezo fluid generator | |
| CN104500985B (en) | A kind of self-powered oil-gas pipeline monitoring device based on fluid power-generation | |
| CN106197581A (en) | A kind of self-powered pipe flow speed monitor | |
| CN205679279U (en) | A kind of self-powered pipe flow speed monitor | |
| CN106018870A (en) | Intelligent pipeline flow velocity monitor | |
| CN107332467B (en) | Self-excited vibration generator for oil-gas pipeline monitoring system | |
| CN205690087U (en) | A kind of self-powered oil and gas pipes monitoring device | |
| CN106439500B (en) | A kind of pipeline stream mode monitoring device | |
| CN205679633U (en) | A kind of intelligent pipeline flow monitoring instrument | |
| CN107947634A (en) | A kind of rotary self-powered Monitoring Pinpelines device | |
| CN102230820A (en) | Fiber Bragg grating accelerometer based on U-type cantilever structure | |
| CN205782024U (en) | A kind of pipeline stream mode monitoring device | |
| CN205681348U (en) | A kind of self-excited vibration formula permanent pipe stream piezoelectric generator | |
| CN105978401B (en) | A kind of oil pipeline monitoring system power supply device | |
| CN205681333U (en) | A kind of auto-excitation type pipeline fluid piezoelectric harvester | |
| CN107370417B (en) | Indirect excitation piezoelectric pipeline flow energy harvester | |
| CN205681339U (en) | A kind of intelligent pipeline stream monitor based on piezoelectric beam | |
| CN106059390B (en) | A kind of permanent pipe stream piezoelectric generator of self-excited vibration formula |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210701 Address after: Room 406, no.3020 Huling Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province Patentee after: Huzhou lingchuang Technology Co., Ltd Address before: 321004 688 Yingbin Road, Zhejiang, Jinhua, Zhejiang Normal University Patentee before: ZHEJIANG NORMAL University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211209 Address after: 252000 No. 2, Huixin South Road, Gaotang Economic Development Zone, Liaocheng City, Shandong Province (Development Zone Management Committee) Patentee after: GAOTANG Rongzhi Rongzhi Technology Service Co.,Ltd. Address before: Room 406, no.3020 Huling Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province Patentee before: Huzhou lingchuang Technology Co., Ltd |