CN203657868U - Electromagnetic and ultrasonic integrated-design flow meter - Google Patents
Electromagnetic and ultrasonic integrated-design flow meter Download PDFInfo
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- CN203657868U CN203657868U CN201320853343.3U CN201320853343U CN203657868U CN 203657868 U CN203657868 U CN 203657868U CN 201320853343 U CN201320853343 U CN 201320853343U CN 203657868 U CN203657868 U CN 203657868U
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- ultrasonic transducer
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Abstract
The utility model discloses an electromagnetic and ultrasonic integrated-design flow meter. Two magnetic poles used for generating a magnetic field and two electrodes used for cutting magnetic lines are arranged outside a conduit. The magnetic poles are wound with coils and are symmetrically distributed on the center of the conduit. The electrodes are symmetrically distributed on the center of the conduit. The plane of the center of the two electrodes is perpendicular to the plane of the center of the two magnetic poles. An upstream ultrasonic transducer component and a downstream ultrasonic transducer component are arranged outside the conduit, wherein the upstream ultrasonic transducer component and the downstream ultrasonic transducer component are symmetrically distributed on the center of the conduit. An included angle between the plane of the center of the upstream ultrasonic transducer component and the center of the downstream ultrasonic transducer component and the plane of the center of the two magnetic poles ranges from 30 degrees to 60 degrees. The electromagnetic and ultrasonic integrated-design flow meter can measure the flow of fluid inside the conduit together and acquire accurate flow values by judging two flow values.
Description
Technical field
The utility model relates to a kind of technology that improves flow measurement accuracy of measurement, refers in particular to the flowmeter of a kind of electromagnetism and ultrasonic integration design.
Background technology
Electromagnetic flowmeter is the flowmeter that carries out flow measurement according to Faraday's electromagnetic induction law.The advantage of electromagnetic flowmeter is that crushing is minimum, and measurable flow weight range is large.More than the ratio of maximum flow and minimum flow is generally 30:1, the industrial caliber wide ranges being suitable for, maximum can reach 3m, output signal and measured flux are linear, degree of accuracy is higher, can measure the fluid flow of acid, alkali, salt solusion, water, sewage, corrosive liquids and mud, ore pulp, paper pulp of conductivity >=5 μ s/cm etc.But it can not measurement gas, the flow of steam and the lower liquid medium (as pure water) of conductivity.
Ultrasonic flow meter is a kind of contactless instrument, and the rate-of flow that it both can measure Large Diameter Pipeline also can be for the measurement of the medium that is difficult for contact and observe.Its accuracy of measurement is very high, is subject to hardly the interference of the various parameters of measured medium, especially can solve other instrument can not the flow measurement problem of severe corrosive, non-conductive, radioactivity and inflammable and explosive medium.Ultrasonic flow meter is outside the temperature range of measurable flow body is subject to the restriction of the coupling material heatproof degree between ultrasonic wave transducer aluminium and transducer and pipeline now, in pipeline liquid medium, as exists a large amount of bubbles can cause measuring unstable, and flow deviation is larger.
But when pipeline medium conductivity is low, and while there is bubble in pipeline, when electromagnetic flowmeter and the independent type selecting of ultrasonic flow, just there is defect.
China Patent Publication No. CN203249653U, open day on October 23rd, 2013, name is called in the utility model patent of " intelligent open-channel meter " and discloses a kind of intelligent open-channel meter, the Flow Measurement Display Meter that connects power supply is electrically connected with ultrasonic liquid leveller by tank gage input terminal and tank gage cable, be connected with electromagnetism flow velocity sensor electrical by sensor input terminal and sensor electrical cable again, this Flow Measurement Display Meter provides stable exciting current for electromagnetism flow sensor, and provide reliable direct supply to ultrasonic liquid leveller, detected the induced potential being directly proportional to the flow velocity in tested flow section by electromagnetism flow sensor, pass to Flow Measurement Display Meter through sensor electrical cable, meanwhile, ultrasonic liquid leveller by the bathymetric data at the flow section place measuring with 4 20mA signal forms, send Flow Measurement Display Meter to through tank gage cable, this Flow Measurement Display Meter adds by the key that arranges on converter, patrol and add key, patrol the mean flow rate that subtracts the basic structure dimensional data of tested flow section that key and ESC Escape insert in advance and the mathematical model of converter inside and calculate this flow section, instantaneous delivery, again according to time cumulation, result is shown by LCDs.Weak point is, the ultrasonic liquid leveller Intelligent Measurement liquid level of this flowmeter and can not tracer liquid flow, what ultrasound wave played is only supplementary means, and ultrasonic liquid leveller and electromagnetism flow sensor can not combine, take up room larger, use inconvenience.
Utility model content
The purpose of this utility model is to overcome in prior art when pipeline medium conductivity is low, and while there is bubble in pipeline, flowmeter can not Measurement accuracy flow defect, the flowmeter of a kind of electromagnetism and ultrasonic integration design is provided, can accurately measures fluid flow in various situations by this flowmeter.
The purpose of this utility model is to be achieved by following technical proposals:
The flowmeter of a kind of electromagnetism and ultrasonic integration design, comprise conduit, conduit peripheral hardware is useful on and produces two magnetic poles in magnetic field and two electrodes for cutting magnetic line, each magnetic pole is all wound with coil, two magnetic poles are symmetrical in catheter center, two electrodes in catheter center symmetrical and two residing planes of electrode centers and two residing planes of pole center orthogonal; Conduit is also provided with upstream ultrasonic transducer assembly and downstream ultrasonic transducer assembly outward, upstream ultrasonic transducer assembly and downstream ultrasonic transducer assembly are symmetrical in catheter center, and the scope of the angle of ultrasonic transducer assembly center, upstream and the residing plane in ultrasonic transducer assembly center, downstream and two residing plane formations of electrode centers is 30 degree-60 degree; Electrode connects as Electromagnetic Flow testing circuit, ultrasonic transducer assembly connects ultrasonic flow detection circuit, Electromagnetic Flow testing circuit is connected with ultrasonic flow detection circuit, Electromagnetic Flow testing circuit is also connected comparer with ultrasonic flow detection circuit simultaneously, and comparer is also connected with display screen.
Two magnetic poles, form electromagnetic flow transducers with coil and two electrodes of magnetic pole coiling, upstream ultrasonic transducer assembly and downstream ultrasonic transducer assembly form ultrasonic flow sensor, the equal measurable flow body of electromagnetic flow transducer and ultrasonic flow sensor flow.The scope of the angle of ultrasonic transducer assembly center, upstream and the residing plane in ultrasonic transducer assembly center, downstream and two residing plane formations of electrode centers is designs of 30 degree-60 degree, avoid ultrasonic flow sensor to insert after pipeline, the impact of ultrasonic flow sensor shell on liquid flow field, thus the measurement of electromagnetic sensor affected.
As a kind of preferred version, the flowmeter of electromagnetism and ultrasonic integration design also comprises yoke, and yoke is socketed in outside conduit, and two magnetic poles, two electrodes and two ultrasonic transducer assemblies are all arranged in the cavity forming between conduit and yoke.The effect of yoke is to avoid the impact of external magnetic field on flowmeter survey, has improved the degree of accuracy of flowmeter survey.
As a kind of preferred version, in conduit, be provided with insulation lining.Insulation lining has prevented that induced signal voltage is by metal tube short circuit.
A using method for the flowmeter of battery and ultrasonic integration design, is characterized in that, comprises the following steps:
Step 1, flowmeter is started working, and fluid flows through conduit, and Electromagnetic Flow testing circuit detects several times fluid flow Q1, and ultrasonic flow detects several times electric circuit inspection fluid flow Q2.
The formula that fluid flow Q1 calculates is Q1=KBDV, and wherein, K is fixed proportion coefficient, and B is magnetic field intensity, and D is the diameter of conduit, and V is the flow velocity of fluid.
The formula that fluid flow Q2 calculates is
,
Wherein v is flow velocity, and D is internal diameter of the pipeline, T
suitableand T
contrarybe respectively the ultrasound wave concurrent-countercurrent travel-time, θ is the angle of travel path and flow direction.
Step 3, fluid flow Q1 fluid flow Q2 revises, display screen output display fluid flow Q1 and revised fluid flow Q2;
Step 4, display screen output display fluid flow Q1 shows that Q2 is abnormal simultaneously;
The beneficial effects of the utility model are, the flowmeter of electromagnetism and the ultrasonic integration design flow of measuring guide inner fluid jointly, and can judge according to the numerical value of two flows, obtain accurate flow number, simultaneously, flow rate calculation when this flowmeter can be applicable to there is bubble in the low and pipeline of pipeline medium conductivity, applicability is stronger.
Brief description of the drawings
Fig. 1 is a kind of schematic cross-section of the present utility model.
Fig. 2 is the utility model circuit theory connection layout.
Wherein: 1, magnetic pole, 2, coil, 3, yoke, 4, electrode, 5, upstream ultrasonic transducer assembly, 6, downstream ultrasonic transducer assembly, 7, insulation lining, 8, conduit, 9, Electromagnetic Flow testing circuit, 10, ultrasonic flow detection circuit, 11, comparer, 12, display screen.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Embodiment: the flowmeter of a kind of electromagnetism and ultrasonic integration design, its schematic cross-section as shown in Figure 1, comprise conduit, in conduit, be provided with insulation lining, conduit peripheral hardware is useful on and produces two magnetic poles in magnetic field and two electrodes for cutting magnetic line, each magnetic pole is all wound with coil, and two magnetic poles are symmetrical in catheter center, two electrodes in catheter center symmetrical and two residing planes of electrode centers and two residing planes of pole center orthogonal; Conduit is also provided with upstream ultrasonic transducer assembly and downstream ultrasonic transducer assembly outward, upstream ultrasonic transducer assembly and downstream ultrasonic transducer assembly are symmetrical in catheter center, and the angle of ultrasonic transducer assembly center, upstream and the residing plane in ultrasonic transducer assembly center, downstream and two residing plane formations of electrode centers is 45 degree; Yoke is socketed in outside conduit, and two magnetic poles, two electrodes and two ultrasonic transducer assemblies are all arranged in the cavity forming between conduit and yoke.
The circuit theory connection layout of the flowmeter of electromagnetism and ultrasonic integration design as shown in Figure 2, electrode connects Electromagnetic Flow testing circuit, ultrasonic transducer assembly connects ultrasonic flow detection circuit, Electromagnetic Flow testing circuit is connected with ultrasonic flow detection circuit, Electromagnetic Flow testing circuit is also connected comparer with ultrasonic flow detection circuit simultaneously, and comparer is also connected with display screen.
The using method of the flowmeter of battery and ultrasonic integration design comprises the following steps:
Step 1, flowmeter is started working, and fluid flows through conduit, and Electromagnetic Flow testing circuit detects several times fluid flow Q1, and ultrasonic flow detects several times electric circuit inspection fluid flow Q2.
Step 3, fluid flow Q1 fluid flow Q2 revises, display screen output display fluid flow Q1 and revised fluid flow Q2;
Step 4, display screen output display fluid flow Q1 shows that Q2 is abnormal simultaneously;
Claims (3)
1. the flowmeter of an electromagnetism and ultrasonic integration design, comprise conduit, it is characterized in that, conduit peripheral hardware is useful on and produces two magnetic poles in magnetic field and two electrodes for cutting magnetic line, each magnetic pole is all wound with coil, two magnetic poles are symmetrical in catheter center, two electrodes in catheter center symmetrical and two residing planes of electrode centers and two residing planes of pole center orthogonal; Conduit is also provided with upstream ultrasonic transducer assembly and downstream ultrasonic transducer assembly outward, upstream ultrasonic transducer assembly and downstream ultrasonic transducer assembly are symmetrical in catheter center, and the scope of the angle of ultrasonic transducer assembly center, upstream and the residing plane in ultrasonic transducer assembly center, downstream and two residing plane formations of electrode centers is 30 degree-60 degree; Electrode connects Electromagnetic Flow testing circuit, ultrasonic transducer assembly connects ultrasonic flow detection circuit, Electromagnetic Flow testing circuit is connected with ultrasonic flow detection circuit, Electromagnetic Flow testing circuit is also connected comparer with ultrasonic flow detection circuit simultaneously, and comparer is also connected with display screen.
2. the flowmeter of a kind of electromagnetism according to claim 1 and ultrasonic integration design, it is characterized in that, also comprise yoke, yoke is socketed in outside conduit, and two magnetic poles, two electrodes and two ultrasonic transducer assemblies are all arranged in the cavity forming between conduit and yoke.
3. the flowmeter of a kind of electromagnetism according to claim 1 and 2 and ultrasonic integration design, is characterized in that, is provided with insulation lining in described conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320853343.3U CN203657868U (en) | 2013-12-23 | 2013-12-23 | Electromagnetic and ultrasonic integrated-design flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320853343.3U CN203657868U (en) | 2013-12-23 | 2013-12-23 | Electromagnetic and ultrasonic integrated-design flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657868U true CN203657868U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320853343.3U Expired - Fee Related CN203657868U (en) | 2013-12-23 | 2013-12-23 | Electromagnetic and ultrasonic integrated-design flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203657868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019860A (en) * | 2013-12-23 | 2014-09-03 | 浙江迪元仪表有限公司 | Flowmeter integrating electromagnetism and ultrasonic and use method of flowmeter |
-
2013
- 2013-12-23 CN CN201320853343.3U patent/CN203657868U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019860A (en) * | 2013-12-23 | 2014-09-03 | 浙江迪元仪表有限公司 | Flowmeter integrating electromagnetism and ultrasonic and use method of flowmeter |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20201223 |