CN101608941A - Intelligent magnetic vortex flow detection control system - Google Patents
Intelligent magnetic vortex flow detection control system Download PDFInfo
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- CN101608941A CN101608941A CNA2008100119299A CN200810011929A CN101608941A CN 101608941 A CN101608941 A CN 101608941A CN A2008100119299 A CNA2008100119299 A CN A2008100119299A CN 200810011929 A CN200810011929 A CN 200810011929A CN 101608941 A CN101608941 A CN 101608941A
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Abstract
The invention belongs to the flow measuring system field, relate in particular to a kind of intelligent magnetic vortex flow detection control system, comprise meter reading terminal (5), the GSM/GPRS network of being furnished with flow meter and detect control center; Table body (1) internal fixation at described flow meter is furnished with eddy generator (2), fixedly is furnished with magnetic vortex flow probe (3) within it; In gauging table body (1), also fixedly is furnished with Electromagnetic Flow probe (4); The interface of flow meter joins in the output port of magnetic vortex flow probe (3) and Electromagnetic Flow probe (4) and the meter reading terminal (5); Meter reading terminal comprises flow meter and meter reading terminal GSM/GPRS net modulator-demodular unit; The port of flow meter connects the port of meter reading terminal GSM/GPRS net modulator-demodular unit; The port of meter reading terminal GSM/GPRS net modulator-demodular unit detects control end GSM/GPRS net modulator-demodular unit through the GSM/GPRS network insertion.
Description
Technical field
The invention belongs to the flow measuring system field, relate in particular to a kind of intelligent magnetic vortex flow detection control system.
Background technology
The magnetic vortex flow meter is to take the Ferrari excitation principle to measure the vortex shedding frequence of Karman vortex street and then the instrument of accurate measurement flow, the magnetic vortex flow pick-up unit is to increase Based Intelligent Control particularly to the working state real-time monitoring of flowmeter own on the basis of pure metering, the degree of confidence real-time analysis of continuous data is the lifting of flowmeter on the technological concept utility theory.The Karman vortex street flowmeter is based in certain reynolds number Re scope, and the thought that the value of stable Karman vortex street and vortex shedding frequence are directly proportional with rate of flow of fluid designs.Electromagnetic flowmeter is based on conductive liquid and flows in perpendicular to the non magnetic measuring tube in magnetic field, and generation designs with the thought of the proportional induced potential of flow on the direction vertical with flow direction.
Theoretical and facts have proved that there is following shortcoming in electromagnetic flowmeter:
(1) electromagnetic flowmeter can only be measured the fluid flow of conducting medium, the flow of energy measurement non-conductive medium not, for example gas and water treatment heat supply water preferably.Its lining need be considered under hot conditions in addition.
(2) electromagnetic flowmeter is to determine volumetric flow rate under the duty by the speed of measuring conducting liquid.According to measuring requirement, for liquid medium, should measure mass rate, the measuring media flow should relate to the density of fluid, and the different fluid medium has different density, and varies with temperature.If electromagnetic flowmeter converter is not considered fluid density, the volumetric flow rate that only provides under the normal temperature state is inappropriate.
(3) installation and debugging of electromagnetic flowmeter are than other flowmeter complexity, and require stricter.Transmitter and converter must supporting uses, between the two can not be with the instrument adapted of two kinds of different models.When transmitter is installed,, must require to carry out in strict accordance with product description from the concrete Installation and Debugging of choosing of infield.Can not there be vibration the infield, and high-intensity magnetic field can not be arranged.Must make transmitter and pipeline that excellent contact and good ground connection are arranged when mounted.The current potential of transmitter and detected fluid equipotential.In use, the gas that retains in the measuring tube must be drained, otherwise bigger measuring error can be caused.
When (4) electromagnetic flowmeter is used for measuring the viscous liquid that has dirt, goo or sediment change the transmitter output potential attached on measuring tube inwall or the electrode, bring measuring error, fouling products reaches certain thickness on the electrode, may cause instrument to measure.
(5) water supply line fouling or wearing and tearing change internal diameter size, and the flow value that influence is original causes measuring error.1mm can bring about 2% additive error as 100mm bore instrument internal diameter varies.
(6) measuring-signal of transmitter is very little millivolt level electric potential signal, except that flow signal, also is mingled with the signal that some have nothing to do with flow, as in-phase voltage, quadrature voltage and common mode voltage etc.In order accurately to measure flow, must eliminate various undesired signals, effectively flow signal amplifying.Should improve the performance of flow converter, preferably adopt the converter of microprocessor type, control field voltage, select excitation mode and frequency, can get rid of homophase and disturb and orthogonal interference by detected fluid character with it.But improved instrument structure complexity, cost is higher.
Theoretical and facts have proved that there is following shortcoming in vortex shedding flow meter:
(1) volumetric flow rate under the vortex shedding flow meter duty is not subjected to the influence of thermal parameters such as detected fluid temperature, pressure, density, but the final measurement of liquid or steam should be a mass rate, and for gas, final measurement should be the standard volume flow.Mass rate or standard volume flow all must convert by fluid density, must consider that the fluid density that the fluid working conditions change causes changes.
(2) cause the factor of flow measurement error to mainly contain: the measuring error that the pipe flow speed inequality causes; Media density in the time of can not accurately determining the fluid working conditions change; Wet saturated steam is assumed dry saturated steam to be measured.If these errors are not limited or eliminate, the overall measurement error of vortex shedding flow meter can be very big.
(3) resistance to shock is poor.External vibration can make vortex shedding flow meter produce measuring error, even cisco unity malfunction.The impact of passage fluid high flow rate can make the cantilever of vortex shedder produce extraneous vibration, and measuring accuracy is reduced.Big caliber influence is more obvious.
(4) to measuring dirty medium bad adaptability.The generation body of vortex shedding flow meter is very easily dirty or twined by dirt by medium, changes the solid size, and measuring accuracy is caused very big influence.
(5) straight length requires high.The expert points out that 20D behind the 40D could satisfy measurement requirement before the vortex shedding flow meter straight length must guarantee.
(6) heat resistance is poor.Vortex shedding flow meter generally can only be measured the fluid flow of medium below 300 ℃.
In addition, the actual condition of above-mentioned two kinds of flowmeter working sites is not quite similar and especially is applied in chemical enterprise, and the present situation of instrumentation can't be monitored in real time, and therefore, the degree of confidence of the data of flowmeter survey is very low, and this is seriously departing from the base attribute of flowmeter.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art part and provides a kind of simple in structure, broad quantum, and the flow metering data are accurate, the flow meter body anti-corrosive properties are good, and non-scaling is wear-resistant, antijamming capability is strong, can carry out the intelligent magnetic vortex flow detection control system of remote detection control.
For achieving the above object, the present invention is achieved in that
Intelligent magnetic vortex flow detection control system, it comprises meter reading terminal, the GSM/GPRS network of being furnished with flow meter and detects control center; Table body internal fixation at described flow meter is furnished with vortex generation body; The xsect of described vortex generation body is an isosceles triangle; Is furnished with the magnetic vortex flow probe at described vortex generation body internal fixation; In the table body of described flow meter, also fixedly is furnished with the Electromagnetic Flow probe; The data-interface of flow meter joins in the output port of described magnetic vortex flow probe and Electromagnetic Flow probe and the meter reading terminal; Described detection control center comprises single-chip microcomputer, flowmeter measuring device, detects control end GSM/GPRS/ net modulator-demodular unit and amr message transmission terminal; The transmit port of described amr message transmission terminal connects the port of single-chip microcomputer and flowmeter measuring device; The port of the port of described single-chip microcomputer and flowmeter measuring device joins; Described meter reading terminal comprises flow meter and meter reading terminal GSM/GPRS net modulator-demodular unit; The data transmission port of described flow meter connects the input port of meter reading terminal GSM/GPRS net modulator-demodular unit; The output port of described meter reading terminal GSM/GPRS net modulator-demodular unit detects control end GSM/GPRS net modulator-demodular unit through the GSM/GPRS network insertion; The port of described detection control end GSM/GPRS net modulator-demodular unit and the port of amr message transmission terminal join.
As a kind of preferred version, detection of the present invention control center also is provided with detection control apparatus and charging and inquiry unit; Described detection control apparatus and charging and inquiry unit are connected to the transmit port of single-chip microcomputer and flowmeter measuring device.
As another kind of preferred version, the present invention can be provided with poly-tetrafluoro layer in the table body of described flow meter.
In addition, meter reading terminal of the present invention also is furnished with meter-copy device; The FPDP of described flow meter is joined through the input port of meter-copy device and meter reading terminal GSM/GPRS net modulator-demodular unit.
The present invention carries out combination with two kinds of flowmeter advantages, and the inferior position complementation adopts dual mode to measure simultaneously, makes the flow metering data more accurate.The present invention utilizes ripe network technique that flow measuring data is carried out the degree of confidence analysis in conjunction with the flowmeter duty, in time is adjusted into optimum Working automatically or carries out Realtime Alerts, its broad quantum, anti-corrosive properties are good, non-scaling, wear-resistant, antijamming capability is strong and can carry out remote detection control.The present invention is installed remote control additional at user side, use ripe network technology to set up the server of enough capacity, use advanced GSM/GPRS Radio Transmission Technology, to the duty of flowmeter, the data in real time monitoring of collection, make metering result's degree of confidence reach people's acceptable degree, demonstrated fully the justice of measurement instrument, just attribute.
Compare with existing single flowmeter survey technology, the present invention has following characteristics:
1, use the generation of Mai Keshi vortex street, detection integral type probe that the eddy frequency of the vortex cocurrent flow short-term training direct ratio that measured fluid produces when flowing is accurately detected.
2, adopt poly-tetrafluoro (non-metallic liner) technology of sintering at the metering pipeline, not only make the smooth current of pipeline more steady, anti-corrosive properties, the non-scaling of increase are guaranteed metering accuracy.
3, use the Mai Keshi electromagnetism that the integral type probe takes place, detects, not only cut down the consumption of energy, it is more accurate that measurement range adds ambassador's metering simultaneously.
4, comprehensive measurement and then the guarantee accuracy of measuring.The data of utilizing vortex shedding flow meter measuring principle and electromagnetic flowmeter survey principle to measure are carried out the degree of confidence analysis by control system, carry out data transmission, warning etc. in conjunction with duty.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.Protection scope of the present invention will not only be confined to the statement of following content.
Fig. 1 is a table body portion one-piece construction synoptic diagram of the present invention;
Fig. 2 is a hop theory diagram of the present invention;
Fig. 3 connects block diagram for each components and parts of meter-copy device of the present invention;
Embodiment
As shown in Figure 1, 2, intelligent magnetic vortex flow detection control system, it comprises meter reading terminal 5, the GSM/GPRS network of being furnished with flow meter and detects control center; Table body 1 internal fixation at described flow meter is furnished with vortex generation body 2; The xsect of vortex generation body 2 of the present invention is an isosceles triangle, is furnished with magnetic vortex flow probe 3 at described vortex generation body 2 internal fixation; In the table body 1 of described flow meter, also fixedly is furnished with Electromagnetic Flow probe 4; The data-interface of flow meter joins in the output port of described magnetic vortex flow probe 3 and Electromagnetic Flow probe 4 and the meter reading terminal 5; Described detection control center comprises single-chip microcomputer, flowmeter measuring device, detects control end GSM/GPRS/ net modulator-demodular unit and amr message transmission terminal; The transmit port of described amr message transmission terminal connects the port of single-chip microcomputer and flowmeter measuring device; The port of the port of described single-chip microcomputer and flowmeter measuring device joins; Described meter reading terminal 5 comprises flow meter and meter reading terminal GSM/GPRS net modulator-demodular unit; The data transmission port of described flow meter connects the input port of meter reading terminal GSM/GPRS net modulator-demodular unit; The output port of described meter reading terminal GSM/GPRS net modulator-demodular unit detects control end GSM/GPRS net modulator-demodular unit through the GSM/GPRS network insertion; The port of described detection control end GSM/GPRS net modulator-demodular unit and the port of amr message transmission terminal join.Described detection control center also is provided with detection control apparatus and charging and inquiry unit; Described detection control apparatus and charging and inquiry unit are connected to the transmit port of single-chip microcomputer and flowmeter measuring device; In the table body 1 of described flow meter, be provided with poly-tetrafluoro layer 6; Described meter reading terminal 5 also is furnished with meter-copy device; The FPDP of described flow meter is joined through the input port of meter-copy device and meter reading terminal GSM/GPRS net modulator-demodular unit.Single-chip microcomputer of the present invention can adopt general-purpose chips such as P89C581, MSP430.Described meter reading terminal comprises meter-copy device, meter reading terminal GSM/GPRS net modulator-demodular unit and flow meter, and flow meter is an existing product, can join by the input end of meter-copy device and meter reading terminal GSM/GPRS net modulator-demodular unit.The output terminal of meter reading terminal GSM/GPRS net modulator-demodular unit links to each other with detection control end GSM/GPRS/ net modulator-demodular unit through the GSM/GPRS net.Meter reading terminal GSM/GPRS net modulator-demodular unit and detection control end GSM/GPRS/ net modulator-demodular unit can be sent to the GSM/GPRS/ net with the information of carrying instruction or subscriber payment, the conversion of signals that the GSM/GPRS/ that receives is netted is the information of carrying instruction or subscriber payment, and this information is passed to meter reading terminal and detects control center.Wherein meter reading terminal can be provided with a plurality ofly, and the customer flow gauging table in the meter reading terminal also can be provided with a plurality of.
As Fig. 3, meter-copy device of the present invention comprises flow metering table adapter, data address control bus, CPU and interface circuit, flow meter is by flow metering table adapter and data address control bus access interface circuit input end and CPU, flow meter can adopt the electronic flowmeter scale of pulse output, the flow metering table adapter comprises impulse meter and electric-controlled switch, electric-controlled switch receives meter-copy device instruction, switch user transmission ﹠ distribution pipeline.Interface circuit can be finished data-switching and the buffer memory between meter reading terminal GSM/GPRS net modulator-demodular unit and the CPU; The output terminal of interface circuit inserts meter reading terminal GSM/GPRS net modulator-demodular unit, be provided with the FLASH storer in the meter-copy device, flow meter inserts the FLASH storer by flow metering table adapter and data address control bus, the FLASH storer adopts the non-loss storer of power down data, it can the data to flow meter be stored under power-down conditions, and the assurance data are not lost.
The present invention in use, send the message of checking meter by detecting control center to the amr message transmission terminal, the amr message transmission terminal sends meter reading instruction by the communications protocol of checking meter to detecting control end GSM/GPRS/ net modulator-demodular unit, meter reading terminal is after receiving meter reading instruction, at first by the customer flow gauging table to flow metering table adapter output signal, the flow metering table adapter is handled this signal, CPU will become amr message after will handling from the pulse signal of adapter, reach the detection control end GSM/GPRS/ net modulator-demodular unit that detects in the control center by the GSM/GPRS net, this modulator-demodular unit transfers to detection control apparatus and charging and inquiry unit by the amr message transmission terminal with this amr message and handles, and finishes the whole work of checking meter.
The present invention is subjected to the vortex frequency modulation from the high-frequency oscillation signal of input electrode, and the high-frequency signal after the modulation enters single-chip microcomputer and carries out computing and processing, accurately detects the high flow signal of degree of confidence, enters computing of single-chip microcomputer flow and function treatment again.Be composed of time, date program on the single-chip microcomputer, by high capacity serial reservoir the integrated flux of every day stored, and write down this date, accumulating whole daily flows just becomes total flow.At last by LCDs show date, total flow and instantaneous delivery.Operation that perhaps can be by the daily flow search key shows that the daily flow on certain date, fault get rid of or the like, and above function all can be carried out operated from a distance at the online service device that company provides by the user.
Claims (4)
1, intelligent magnetic vortex flow detection control system is characterized in that: comprise meter reading terminal (5), the GSM/GPRS network of being furnished with flow meter and detect control center; Table body (1) internal fixation at described flow meter is furnished with vortex generation body (2); The xsect of described vortex generation body (2) is an isosceles triangle; Is furnished with magnetic vortex flow probe (3) at described vortex generation body (2) internal fixation; In the table body (1) of described flow meter, also fixedly is furnished with Electromagnetic Flow probe (4); The data-interface of flow meter joins in the output port of described magnetic vortex flow probe (3) and Electromagnetic Flow probe (4) and the meter reading terminal (5); Described detection control center comprises single-chip microcomputer, flowmeter measuring device, detects control end GSM/GPRS/ net modulator-demodular unit and amr message transmission terminal; The transmit port of described amr message transmission terminal connects the port of single-chip microcomputer and flowmeter measuring device; The port of the port of described single-chip microcomputer and flowmeter measuring device joins; Described meter reading terminal (5) comprises flow meter and meter reading terminal GSM/GPRS net modulator-demodular unit; The data transmission port of described flow meter connects the input port of meter reading terminal GSM/GPRS net modulator-demodular unit; The output port of described meter reading terminal GSM/GPRS net modulator-demodular unit detects control end GSM/GPRS net modulator-demodular unit through the GSM/GPRS network insertion; The port of described detection control end GSM/GPRS net modulator-demodular unit and the port of amr message transmission terminal join.
2, intelligent magnetic vortex flow detection control system according to claim 1 is characterized in that: described detection control center also is provided with detection control apparatus and charging and inquiry unit; Described detection control apparatus and charging and inquiry unit are connected to the transmit port of single-chip microcomputer and flowmeter measuring device.
3, intelligent magnetic vortex flow detection control system according to claim 1 and 2 is characterized in that: be provided with poly-tetrafluoro layer (6) in the table body (1) of described flow meter.
4, intelligent magnetic vortex flow detection control system according to claim 3 is characterized in that: described meter reading terminal (5) also is furnished with meter-copy device; The FPDP of described flow meter is joined through the input port of meter-copy device and meter reading terminal GSM/GPRS net modulator-demodular unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100119299A CN101608941B (en) | 2008-06-20 | 2008-06-20 | Intelligent magnetic vortex flow detection control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100119299A CN101608941B (en) | 2008-06-20 | 2008-06-20 | Intelligent magnetic vortex flow detection control system |
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| Publication Number | Publication Date |
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| CN101608941A true CN101608941A (en) | 2009-12-23 |
| CN101608941B CN101608941B (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100119299A Expired - Fee Related CN101608941B (en) | 2008-06-20 | 2008-06-20 | Intelligent magnetic vortex flow detection control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091955A (en) * | 2015-04-21 | 2015-11-25 | 侨健新能源科技（苏州）有限公司 | A vortex street flowmeter for coal mines |
| CN106768095A (en) * | 2016-12-26 | 2017-05-31 | 中电华辰（天津）精密测器股份公司 | High accuracy magneto-electric vortex-shedding meter |
| CN110595549A (en) * | 2019-10-12 | 2019-12-20 | 中国石油集团渤海钻探工程有限公司 | Intelligent turbine type liquid flow measuring tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62245922A (en) * | 1986-04-18 | 1987-10-27 | Honda Motor Co Ltd | Karman's vortex street flow meter |
| CN2581952Y (en) * | 2002-11-29 | 2003-10-22 | 福建省天通电讯科技有限公司 | Flow pulse counting acquiring display and data transmission apparatus |
| CN2747547Y (en) * | 2004-10-15 | 2005-12-21 | 庄革 | Large diameter electronic type water meter |
| CN101079182A (en) * | 2006-05-22 | 2007-11-28 | 苏州自来水表业有限公司 | Radio tester for water-supply pressure |
| CN201210061Y (en) * | 2008-06-20 | 2009-03-18 | 李旭 | Intelligent magnetic whirlpool flow detection and control system |
-
2008
- 2008-06-20 CN CN2008100119299A patent/CN101608941B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091955A (en) * | 2015-04-21 | 2015-11-25 | 侨健新能源科技（苏州）有限公司 | A vortex street flowmeter for coal mines |
| CN106768095A (en) * | 2016-12-26 | 2017-05-31 | 中电华辰（天津）精密测器股份公司 | High accuracy magneto-electric vortex-shedding meter |
| CN110595549A (en) * | 2019-10-12 | 2019-12-20 | 中国石油集团渤海钻探工程有限公司 | Intelligent turbine type liquid flow measuring tool |
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| CN101608941B (en) | 2011-08-24 |
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Granted publication date: 20110824 Termination date: 20130620 |