CN105547383A - Fluid flow measuring method based on electromagnetic principle - Google Patents
Fluid flow measuring method based on electromagnetic principle Download PDFInfo
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- CN105547383A CN105547383A CN201510950539.8A CN201510950539A CN105547383A CN 105547383 A CN105547383 A CN 105547383A CN 201510950539 A CN201510950539 A CN 201510950539A CN 105547383 A CN105547383 A CN 105547383A
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- electrode
- electromotive force
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- control computer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
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- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a fluid flow measuring method based on an electromagnetic principle. The method comprises the steps that conducting fluid flows into a measuring tube and flows in the direction vertical to magnetic lines in an alternating current magnetic field produced by an electromagnetic coil; the conducting fluid cuts the magnetic lines to produce induced electromotive force, and an electrode detects and transmits the electromotive force to an electro-optical converter which transmits converted digital electromotive force data to a signal receiver through optical fibers; the signal receiver transmits digital signals to a main control computer after conversion, and the main control computer calculates instantaneous flow and accumulated flow of the conducting fluid according to the electromotive force data. According to the fluid flow measuring method, a photovoltaic conversion technology is used, electromotive force signals are transmitted to the main control computer through the optical fibers for analysis and calculation, electromagnetic interference is prevented, accurate and rapid data transmission is guaranteed, and flow data can be monitored and analyzed remotely conveniently; an electromagnetic coil driving module is used for regulating currents of the electromagnetic coil, various exciting modes are achieved, and accordingly the measurement requirement of different media is met.
Description
Technical field
The present invention relates to measurement of fluid flow field, specifically a kind of measurement of fluid flow method based on electromagnetic principle.
Background technology
Measurement of fluid flow method is a lot, flow measurement for conductive fluid adopts electromagnetic flowmeter to measure mostly, the measuring principle of electromagnetic flowmeter is based on Faraday's electromagnetic induction law: when conducting liquid makes cutting magnetic line movement in magnetic field, produce induced potential in conductor.During measuring flow, conductive liquid flows through magnetic field perpendicular to flow direction with speed V, the flowing of conductive liquid, induces the voltage be directly proportional to mean flow rate, detects with the electrode of two or more and liquid comes into contact, and conversion process, realize the display of flow.But the electric current of existing electromagnetic flowmeter solenoid is all constant, cannot realize multiple excitation mode, thus meet the measurement needs of different medium, and after detection signal conversion, the object of remote monitoring cannot be realized.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of measurement of fluid flow method based on electromagnetic principle, can regulate the electric current of solenoid, be applicable to the measurement without medium, and can by the electromotive force that collects by Optical Fiber Transmission to remote master machine, realize remote monitoring.
Technical scheme of the present invention is:
Based on the measurement of fluid flow method of electromagnetic principle, first conducting liquid flows in measuring tube, flow along magnetic line of force vertical direction in the AC magnetic field produced by solenoid, conductive fluid cutting magnetic line produces induction electromotive force, the electromotive force of generation detects by the electrode contacted with conducting liquid for a pair, then the electromotive force of collection is transferred to electric light converter, electric light converter by conversion after digital quantity electromotive force data by Optical Fiber Transmission to signal receiver, first signal receiver converts light signal to simulating signal, convert simulating signal to digital data transmission to main control computer again, main control computer calculates instantaneous delivery and the integrated flow of conductive fluid according to electromotive force data, described solenoid is connected with solenoid driver module, solenoid driver module includes pulsed capacitance, be connected to electromagnetic coil driving circuit between pulsed capacitance and solenoid, described circuit driven by electromagnetic means includes the current regulation unit of gauge tap and many group parallel connections, described pulsed capacitance, many groups current regulation unit in parallel, gauge tap are sequentially connected in series, the described by-pass cock often organized current regulation unit and include regulating resistance, be connected in series with regulating resistance.
Described electrode includes flat-headed electrode, tip shape electrode and dome electrode; Described electrode selects stainless steel electrode, Hastelloy electrode, Ti electrode, tantalum electrode, platinum/iridium alloy electrode and stainless steel coated with tungsten carbide electrode.
Described measuring tube selects teflon body.
Described main control computer includes central processing unit, the touch display screen be connected with central processing unit respectively and alarm unit.
Advantage of the present invention:
The present invention adopts photoelectric conversion technique, convert electromotive force simulating signal to light signal by Optical Fiber Transmission to signal receiver, light signal carries out changing the analytical calculation of rear confession main control computer by signal receiver, optical fiber is adopted to transmit, avoid electromagnetic interference (EMI), ensure that transmission data accurately fast, be convenient to long-rangely carry out monitoring analysis data on flows; The present invention adopts the electric current of solenoid driver module to solenoid to adjust, and realizes multiple excitation mode, thus meets the measurement needs of different medium; The electrode that the present invention adopts can select the structure of various ways and material, and the requirement of satisfied temperature and pressure, also meets the corrosivity demand of different medium simultaneously; This flowtube adopts teflon body, has good anti-corrosive properties, meets the corrosivity demand of different medium; Main control computer of the present invention is provided with touch display screen, meets the needs of man-machine interaction, and can report to the police to data analysis, realizes the object of remote monitoring.
Embodiment
Based on the measurement of fluid flow method of electromagnetic principle, first conducting liquid flows in measuring tube, flow along magnetic line of force vertical direction in the AC magnetic field produced by solenoid, conductive fluid cutting magnetic line produces induction electromotive force, the electromotive force of generation detects by the electrode contacted with conducting liquid for a pair, then the electromotive force of collection is transferred to electric light converter, electric light converter by conversion after digital quantity electromotive force data by Optical Fiber Transmission to signal receiver, first signal receiver converts light signal to simulating signal, convert simulating signal to digital data transmission to main control computer again, main control computer calculates instantaneous delivery and the integrated flow of conductive fluid according to electromotive force data, described solenoid is connected with solenoid driver module, solenoid driver module includes pulsed capacitance, be connected to electromagnetic coil driving circuit between pulsed capacitance and solenoid, described circuit driven by electromagnetic means includes the current regulation unit of gauge tap and many group parallel connections, described pulsed capacitance, many groups current regulation unit in parallel, gauge tap are sequentially connected in series, the described by-pass cock often organized current regulation unit and include regulating resistance, be connected in series with regulating resistance.
Wherein, electrode includes flat-headed electrode, tip shape electrode and dome electrode; Electrode selects stainless steel electrode, Hastelloy electrode, Ti electrode, tantalum electrode, platinum/iridium alloy electrode and stainless steel coated with tungsten carbide electrode; Measuring tube selects teflon body; Main control computer includes central processing unit, the touch display screen be connected with central processing unit respectively and alarm unit.
Claims (4)
1. based on the measurement of fluid flow method of electromagnetic principle, it is characterized in that: first conducting liquid flows in measuring tube, flow along magnetic line of force vertical direction in the AC magnetic field produced by solenoid, conductive fluid cutting magnetic line produces induction electromotive force, the electromotive force of generation detects by the electrode contacted with conducting liquid for a pair, then the electromotive force of collection is transferred to electric light converter, electric light converter by conversion after digital quantity electromotive force data by Optical Fiber Transmission to signal receiver, first signal receiver converts light signal to simulating signal, convert simulating signal to digital data transmission to main control computer again, main control computer calculates instantaneous delivery and the integrated flow of conductive fluid according to electromotive force data, described solenoid is connected with solenoid driver module, solenoid driver module includes pulsed capacitance, be connected to electromagnetic coil driving circuit between pulsed capacitance and solenoid, described circuit driven by electromagnetic means includes the current regulation unit of gauge tap and many group parallel connections, described pulsed capacitance, many groups current regulation unit in parallel, gauge tap are sequentially connected in series, the described by-pass cock often organized current regulation unit and include regulating resistance, be connected in series with regulating resistance.
2. the measurement of fluid flow method based on electromagnetic principle according to claim 1, is characterized in that: described electrode includes flat-headed electrode, tip shape electrode and dome electrode; Described electrode selects stainless steel electrode, Hastelloy electrode, Ti electrode, tantalum electrode, platinum/iridium alloy electrode and stainless steel coated with tungsten carbide electrode.
3. the measurement of fluid flow method based on electromagnetic principle according to claim 1, is characterized in that: described measuring tube selects teflon body.
4. the measurement of fluid flow method based on electromagnetic principle according to claim 1, is characterized in that: described main control computer includes central processing unit, the touch display screen be connected with central processing unit respectively and alarm unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950539.8A CN105547383A (en) | 2015-12-18 | 2015-12-18 | Fluid flow measuring method based on electromagnetic principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950539.8A CN105547383A (en) | 2015-12-18 | 2015-12-18 | Fluid flow measuring method based on electromagnetic principle |
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|---|---|
| CN105547383A true CN105547383A (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510950539.8A Pending CN105547383A (en) | 2015-12-18 | 2015-12-18 | Fluid flow measuring method based on electromagnetic principle |
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| CN (1) | CN105547383A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858463A (en) * | 2021-01-06 | 2021-05-28 | 西华大学 | Device for measuring solid-phase medium concentration in solid-liquid two-phase fluid |
| CN112858460A (en) * | 2021-01-06 | 2021-05-28 | 西华大学 | Method for measuring concentration of solid-phase medium in solid-liquid two-phase fluid |
| CN115977613A (en) * | 2022-11-28 | 2023-04-18 | 中国航天科工集团有限公司 | Method for calculating liquid production coefficient of intelligent separate mining device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410742A (en) * | 2002-10-14 | 2003-04-16 | 杭州电子工业学院 | Intelligent frequency conversion, current transform type excitation method and electromagnetic flow meter |
| CN102365530A (en) * | 2009-05-04 | 2012-02-29 | 罗斯蒙德公司 | Magnetic flowmeter for measuring flow |
| JP2013195064A (en) * | 2012-03-15 | 2013-09-30 | Azbil Corp | Excitation circuit of electromagnetic flow meter |
| CN104048711A (en) * | 2014-07-04 | 2014-09-17 | 威海市天罡仪表股份有限公司 | Electromagnetic field multi-level strength switching circuit and electromagnetic field multi-level strength switching calculation method |
-
2015
- 2015-12-18 CN CN201510950539.8A patent/CN105547383A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410742A (en) * | 2002-10-14 | 2003-04-16 | 杭州电子工业学院 | Intelligent frequency conversion, current transform type excitation method and electromagnetic flow meter |
| CN102365530A (en) * | 2009-05-04 | 2012-02-29 | 罗斯蒙德公司 | Magnetic flowmeter for measuring flow |
| JP2013195064A (en) * | 2012-03-15 | 2013-09-30 | Azbil Corp | Excitation circuit of electromagnetic flow meter |
| CN104048711A (en) * | 2014-07-04 | 2014-09-17 | 威海市天罡仪表股份有限公司 | Electromagnetic field multi-level strength switching circuit and electromagnetic field multi-level strength switching calculation method |
Non-Patent Citations (1)
| Title |
|---|
| 霍亮生，顾祖宝，喻岫杏: "基于多种励磁方式的电磁流量计控制系统", 《仪表技术与传感器》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858463A (en) * | 2021-01-06 | 2021-05-28 | 西华大学 | Device for measuring solid-phase medium concentration in solid-liquid two-phase fluid |
| CN112858460A (en) * | 2021-01-06 | 2021-05-28 | 西华大学 | Method for measuring concentration of solid-phase medium in solid-liquid two-phase fluid |
| CN112858460B (en) * | 2021-01-06 | 2023-07-18 | 西华大学 | Method for measuring concentration of solid medium in solid-liquid two-phase fluid |
| CN112858463B (en) * | 2021-01-06 | 2023-11-24 | 西华大学 | Device for measuring concentration of solid medium in solid-liquid two-phase fluid |
| CN115977613A (en) * | 2022-11-28 | 2023-04-18 | 中国航天科工集团有限公司 | Method for calculating liquid production coefficient of intelligent separate mining device |
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Application publication date: 20160504 |