CN101451867A - Slurry type electromagnetic flowmeter - Google Patents

Slurry type electromagnetic flowmeter Download PDF

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Publication number
CN101451867A
CN101451867A CNA2007101714066A CN200710171406A CN101451867A CN 101451867 A CN101451867 A CN 101451867A CN A2007101714066 A CNA2007101714066 A CN A2007101714066A CN 200710171406 A CN200710171406 A CN 200710171406A CN 101451867 A CN101451867 A CN 101451867A
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CN
China
Prior art keywords
module
control module
electromagnetic flowmeter
flowmeter
coil
Prior art date
Application number
CNA2007101714066A
Other languages
Chinese (zh)
Inventor
顾志祥
Original Assignee
上海银流计测仪器有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 上海银流计测仪器有限公司 filed Critical 上海银流计测仪器有限公司
Priority to CNA2007101714066A priority Critical patent/CN101451867A/en
Publication of CN101451867A publication Critical patent/CN101451867A/en

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Abstract

The invention relates to a serofluid type electrical flowmeter, comprising a coil, a signal electrode, a signal acquisition amplification processing module, a central primary control module, an excitation control module, a power supply, an input module, an output module and a display module. The signal acquisition amplification processing module, excitation control module, power supply, input module, output module and display module are respectively connected with the central primary control module. The signal acquisition amplification processing module and the excitation control module are respectively connected with the signal electrode and the coil. Compared with the prior art, the method of the invention improves stability of measurement as well as detection precision and response speed of empty and full pipes and reduces requirements for measurement medium and probability for false alarming while the flow rate of serofluid medium is accurately measured, and also simplifies the adjusting work of the electrical flowmeter and improves the work efficiency while the performance is improved.

Description

Slurry type electromagnetic flowmeter
Technical field
The present invention relates to electromagnetic flowmeter, particularly slurry type electromagnetic flowmeter.
Background technology
Electromagnetic flowmeter is a kind of very ripe flowmeter of dominate in the at present domestic and international flow instrument.Its technology is through the continual renovation of decades and perfect, and improving constantly of manufacturing process has been widely used in tap water, environmental protection, petrochemical complex, metallurgical electric power, food medicine and other fields.But in some field, in the application as industries such as papermaking, ore pulp, mud, owing to be subjected to the influence that the consistency of measured medium solid-liquid two-phase, medium changes greatly, flow hangs down working conditions such as flow velocity greatly, make the application of electromagnetic flowmeter problems such as unstable, inaccurate occur, this problem is the direction of going together and paying close attention to always, studying both at home and abroad.The electromagnetic flowmeter of domestic production does not at present solve the application problem that slurry medium is measured as yet well, only has specialized vendor few in number that the precedent of success is arranged abroad yet.
The technological difficulties of slurry type electromagnetic flowmeter are that the effective discharge voltage signal that flow sensor collects is very faint, the effective voltage signal that several microvolts are especially only arranged when hanging down flow velocity, and the intensity of electromagnetic interference signal of following with it and flow noise influence is hundreds of times and even thousands of times of useful signal, because above-mentioned technological difficulties make present traditional electrical magnetic flowmeter can't be applied to the measurement of slurry type fluid.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of slurry type electromagnetic flowmeter that can be used for measuring the slurry type fluid for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: slurry type electromagnetic flowmeter, it is characterized in that, comprise coil, signal electrode, signals collecting processing and amplifying module, central primary control module, excitation control module, power supply, load module, output module, display module, described signals collecting processing and amplifying module, excitation control module, power supply, load module, output module, display module are connected with the central primary control module respectively, and described signals collecting processing and amplifying module, excitation control module are connected with coil with signal electrode respectively.
Also comprise safety barrier, this safety barrier is connected with coil, signals collecting processing and amplifying module.
Compared with prior art, the inventive method has to the slurry medium flow measurement simultaneously accurately, measuring stability and accuracy and response speed empty, that full packages detects have been improved, reduced the requirement of measuring media and the probability of false alarm, when performance improves, simplify the adjustment workload of electromagnetic flowmeter, improved efficiency.
Description of drawings
Fig. 1 is the structural representation of slurry type electromagnetic flowmeter of the present invention.
Embodiment
As shown in Figure 1, slurry type electromagnetic flowmeter of the present invention comprises coil, signals collecting processing and amplifying module, central primary control module, excitation control module, power supply, load module, output module, display module.
Electromagnetic flowmeter is by electromagnetic flow transducer (being installed on the primary instrument on the flow pipeline) and electromagnetic flux converter is supporting forms.According to incompletely statistics, the year of the electromagnetic flowmeter of Chinese market is sold use amount about more than 60,000, wherein the sales volume of import and joint venture accounts for more than 80% of Total sales volume, its main cause is that the present domestic enterprise electromagnetic flowmeter technology of producing is backward relatively, production technology is coarse relatively, and this situation has hindered the development of Chinese Enterprise in this field to a certain extent.
Our company is the professional manufacturer of a tame flow instrument, leading products are YLD series electromagnetic flowmeters, through continuous technical research and technological innovation, on the gordian technique of electromagnetic flowmeter, have breakthrough, the quality of homemade electromagnetic flowmeter is improved, has satisfied user's requirement in a lot of applications.
Electromagnetic flowmeter is based on a kind of instrument of measuring the conducting liquid volumetric flow rate that the Faradic electricity magnetic induction principle is developed, according to Faraday's electromagnetic induction law, when electric conductor is made cutting magnetic line movement in magnetic field, produce induction electromotive force in the conductor, the size of this electromotive force is directly proportional with the speed that conductor is done in magnetic field perpendicular to Movement in Magnetic Field, again according to caliber, the difference of medium converts flow to thus.
Electromagnetic flowmeter is a kind of very ripe flowmeter of at present domestic and international flow instrument dominate.Its technology is through the continual renovation of decades and perfect, and improving constantly of manufacturing process has been widely used in tap water, environmental protection, petrochemical complex, metallurgical electric power, food medicine and other fields.But in some field, in the application as industries such as papermaking, ore pulp, silt water, owing to be subjected to the influence that the consistency of measured medium solid-liquid two-phase, medium changes greatly, flow hangs down working conditions such as flow velocity greatly, make the application of electromagnetic flowmeter problems such as unstable, inaccurate occur, this problem is the direction of going together and paying close attention to always, studying both at home and abroad.The application that the electromagnetic flowmeter of domestic production does not at present solve slurry medium as yet well also only has specialized vendor few in number that the precedent of success is arranged abroad.
The technological difficulties of slurry type electromagnetic flowmeter are that the effective discharge voltage signal that flow sensor collects is very faint, the effective voltage signal that several microvolts are especially only arranged when hanging down flow velocity, and the intensity of electromagnetic interference signal of following with it and flow noise influence is hundreds of times and even thousands of times of useful signal.Because above-mentioned technological difficulties make present traditional electrical magnetic flowmeter can't be applied to the measurement of slurry type fluid.We are through research for this reason, and the various operating modes scene application experiment on the spot by a large amount of has designed slurries tailored version electromagnetic flowmeter voluntarily.
The gordian technique of this flowmeter has been to adopt collection, the amplification treatment circuit of the accurate flow signal of " intelligent fuzzy algorithm " and special-purpose anti-electromagnetic interference (EMI) and the influence of anti-current bulk noise.The application of above-mentioned unique technique has improved the signal to noise ratio (S/N ratio) and the stability of converter, effectively suppressed the influence of various undesired signals, make that the amplification of feeble signal, the accuracy of acquisition process are guaranteed, splendid accuracy and repeatability are arranged in the flow rates of 0.1m/s~12m/s, more with the small amount of flow measuring range expansion of electromagnetic flowmeter to 0.03m/s, its technical indicator is far superior to external like product." intelligent fuzzy algorithm " technology of this product institute successful Application has been started the beginning of electromagnetic flowmeter intelligent algorithm.
Company is unique condenser type sky, the full packages measuring ability of exploitation in this flowmeter also.After adopting condenser type sky, full packages detection mode, overcome present traditional electrical magnetic flowmeter and realized many deficiencies of sky, the online detection of full packages by the mode that detects conductivity, as: false alarm rate height, narrower to measuring media accommodation, response speed is slow etc.Thereby, reduced the requirement of measuring media and the probability of false alarm having guaranteed that flow measurement simultaneously accurately, has improved empty, that full packages detects accuracy and response speed.When performance improves, simplified the adjustment workload of electromagnetic flowmeter, improved efficiency.
This type flowmeter adopts the non-linear dressing technique of online numeral of our company's original creation, and (<0.5m/s) the big defective of measuring error has been expanded the measurement range of flowmeter, has improved the measuring accuracy of flowmeter to have overcome the low flow velocity of traditional electrical magnetic flowmeter.
This type flowmeter domestic in design first adopted the preservation mode that dispatches from the factory, can guarantee that instrumentation is errorless.
Owing to adopt above core key technology, make that the more stable work of electromagnetic flowmeter is reliable, function is more powerful, and accuracy of measurement is higher, use is convenient, and range of application is wider.Our slurries tailored version electromagnetic flowmeter of Development and Production that takes the lead at home on this technical foundation has overcome the weak point of present traditional electrical magnetic flowmeter, has filled up domestic blank in this application.
The situation that this type electromagnetic flowmeter matches with domestic other electromagnetic flowmeter manufacturers shows, every technical indicator of the electromagnetic flowmeter that this is serial has reached or surpassed external like product.
Flow range can reach 0.03m/s~12m/s.Fluid-velocity survey accuracy by 0.5m/s~12m/s in this flow range can reach 0.1~0.5 grade.Cooperate original creation also can reach 0.2~0.5 grade in the accuracy of measurement of the flow rates of 0.1m/s~0.5m/s.

Claims (2)

1. slurry type electromagnetic flowmeter, it is characterized in that, comprise coil, signal electrode, signals collecting processing and amplifying module, central primary control module, excitation control module, power supply, load module, output module, display module, described signals collecting processing and amplifying module, excitation control module, power supply, load module, output module, display module are connected with the central primary control module respectively, and described signals collecting processing and amplifying module, excitation control module are connected with coil with signal electrode respectively.
2. slurry type electromagnetic flowmeter according to claim 1 is characterized in that, also comprises safety barrier, and this safety barrier is connected with coil, signals collecting processing and amplifying module.
CNA2007101714066A 2007-11-30 2007-11-30 Slurry type electromagnetic flowmeter CN101451867A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2007101714066A CN101451867A (en) 2007-11-30 2007-11-30 Slurry type electromagnetic flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2007101714066A CN101451867A (en) 2007-11-30 2007-11-30 Slurry type electromagnetic flowmeter

Publications (1)

Publication Number Publication Date
CN101451867A true CN101451867A (en) 2009-06-10

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CNA2007101714066A CN101451867A (en) 2007-11-30 2007-11-30 Slurry type electromagnetic flowmeter

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101893465A (en) * 2010-06-30 2010-11-24 合肥工业大学 DSP-based electromagnetic flowmeter signal processing system
CN102654411A (en) * 2011-03-02 2012-09-05 上海威尔泰工业自动化股份有限公司 Electromagnetic flowmeter
CN103439528A (en) * 2013-09-16 2013-12-11 中国矿业大学(北京) Method and device for measuring flow speed of dense paste based on electromagnetic signal cross correlation
CN104266694A (en) * 2014-10-21 2015-01-07 中山欧麦克仪器设备有限公司 Intelligent electromagnetic flowmeter for measuring size
CN104977052A (en) * 2015-07-13 2015-10-14 成都国光电子仪表有限责任公司 Electromagnetic flowmeter
CN104990606A (en) * 2015-07-13 2015-10-21 成都国光电子仪表有限责任公司 Flow metering apparatus
CN105004388A (en) * 2015-07-13 2015-10-28 成都国光电子仪表有限责任公司 Electromagnetic flow meter capable of realizing remote flow control
CN105424108A (en) * 2016-01-04 2016-03-23 上海肯特仪表股份有限公司 Magnetic field anomaly detection device of electromagnetic flowmeter sensor
CN105571662A (en) * 2015-12-31 2016-05-11 深圳万讯自控股份有限公司 Signal processing method and device for electromagnetic flowmeter
CN106351821A (en) * 2016-10-15 2017-01-25 陈军辉 Water flow switch
CN107449935A (en) * 2017-07-17 2017-12-08 中国石油化工股份有限公司 Seam speedometer
CN107478280A (en) * 2017-08-17 2017-12-15 合肥工业大学 A kind of water-coal-slurry electromagnetic flowmeter signal processing method based on the analysis of excitation frequency higher hamonic wave

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101893465A (en) * 2010-06-30 2010-11-24 合肥工业大学 DSP-based electromagnetic flowmeter signal processing system
CN101893465B (en) * 2010-06-30 2012-07-11 合肥工业大学 DSP-based electromagnetic flowmeter signal processing system
CN102654411A (en) * 2011-03-02 2012-09-05 上海威尔泰工业自动化股份有限公司 Electromagnetic flowmeter
CN103439528A (en) * 2013-09-16 2013-12-11 中国矿业大学(北京) Method and device for measuring flow speed of dense paste based on electromagnetic signal cross correlation
CN104266694A (en) * 2014-10-21 2015-01-07 中山欧麦克仪器设备有限公司 Intelligent electromagnetic flowmeter for measuring size
CN104977052A (en) * 2015-07-13 2015-10-14 成都国光电子仪表有限责任公司 Electromagnetic flowmeter
CN104990606A (en) * 2015-07-13 2015-10-21 成都国光电子仪表有限责任公司 Flow metering apparatus
CN105004388A (en) * 2015-07-13 2015-10-28 成都国光电子仪表有限责任公司 Electromagnetic flow meter capable of realizing remote flow control
CN105571662A (en) * 2015-12-31 2016-05-11 深圳万讯自控股份有限公司 Signal processing method and device for electromagnetic flowmeter
CN105424108A (en) * 2016-01-04 2016-03-23 上海肯特仪表股份有限公司 Magnetic field anomaly detection device of electromagnetic flowmeter sensor
CN106351821A (en) * 2016-10-15 2017-01-25 陈军辉 Water flow switch
CN106351821B (en) * 2016-10-15 2018-12-28 浙江富莱欧机电有限公司 A kind of water flow switch
CN107449935A (en) * 2017-07-17 2017-12-08 中国石油化工股份有限公司 Seam speedometer
CN107478280A (en) * 2017-08-17 2017-12-15 合肥工业大学 A kind of water-coal-slurry electromagnetic flowmeter signal processing method based on the analysis of excitation frequency higher hamonic wave
CN107478280B (en) * 2017-08-17 2019-07-16 合肥工业大学 A kind of water-coal-slurry electromagnetic flowmeter signal processing method based on the analysis of excitation frequency higher hamonic wave

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