CN109115286A - Double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method - Google Patents
Double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method Download PDFInfo
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- CN109115286A CN109115286A CN201810874513.3A CN201810874513A CN109115286A CN 109115286 A CN109115286 A CN 109115286A CN 201810874513 A CN201810874513 A CN 201810874513A CN 109115286 A CN109115286 A CN 109115286A
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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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- 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
- G01F1/588—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 combined constructions of electrodes, coils or magnetic circuits, accessories therefor
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Abstract
The present invention provides a kind of double group magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method, which specifically can include: measurement pipe, two groups of excitation structure components, two group pattern detecting electrode components, and insulation lining；Wherein, two groups of excitation structure components are mutually perpendicular to be distributed, and are arranged parallel on the same circumference of measurement pipe outer wall；Further, orthogonal two groups of excitation structures component collective effect generates uniform and orthogonal two Vector Magnetic Fields；Two group pattern detecting electrode components are located in the two orthogonal Vector Magnetic Fields generated by two groups of excitation structure components, and it is arranged in measurement pipe on two sections of upstream and downstream of its flow direction, which is L；Insulation lining is arranged on the inner tubal wall of measurement pipe.The present invention can be realized effectively containing electron opaque material and especially in the horizontal well production profile measurement of fluid flow of non-axis symmetry Flow Field Distribution.
Description
Technical field
The present invention relates to oil reservoir logging measurement technologies, particularly, it is related to be related to a kind of double group magnet exciting coil multi-electrode electromagnetism
Method flowmeter sensor.
Background technique
In recent years, traditional electromagnetic flowmeter is due to itself unique feature and advantage, in single-phase flow and High water cut two
Mutually it is widely applied in stream field of flow measurement.However, in the multiphase flow measurement stream for containing certain electron opaque material concentration
It will lead to sensor output signal when amount and generate biggish fluctuation, seriously affect its measurement result, cause to generate large error.Example
Such as, the electromagnet flow meter sensor that patent CN1731106A, CN100491928C and CN1928507A etc. are related to, using one group
Magnet exciting coil and combination double-excitation electromagnetic flow technology, can be under a signal path under fluid conductivity permanence condition
It realizes the measurement of non-full pipe flow, but its practical application is restricted the constant requirement of fluid conductivity.For another example, patent
The multi-electrode electromagnetic flow meter sensor that CN101294832A, CN101368834A and CN101907471A etc. are related to uses
More information of flow in cross section are surveyed in the structure acquisition of one group of magnet exciting coil, multipair detecting electrode, so that electromagnetic flowmeter is most
Measurer is for better anti-current field jamming performance, to realize the precise measurement to asymmetric flow field.
Further, such as patent CN102538882A and CN105157768A etc., by correlation measurement technology and electromagnetic current
Measurement technique combines and the multi-electrode flowmeter sensor based on electromagnetic correlation method structural model that constructs, sensor excitation part
One group of excitation coil structure of traditional electromagnetic flowmeter is continued to use, although containing when fluid is in axially symmetric Flow Field Distribution
There is the multiphase flow rate measurement problem of certain electron opaque material concentration centainly to be solved, but when measuring fluid in non-axis symmetry
Measurement accuracy still can be limited.Also, horizontal well production profile multiphase flow liquid flow pattern fluidised form is affected by gravity seriously, not
With each void fraction distribution in tube fluid under the operating condition of fluid flow and each phase concentration, is measured, there is more multiple compared with vertical well
Miscellaneous actual conditions and more be in non-axis symmetry Flow Field Distribution characteristic.Meanwhile when carrying out the field test of horizontal well production profile,
The magnetic direction and each detecting electrode that excitation coil generates in sensor structure component after going into the well there is also logger
The uncertainty of locating measurement pipe cross-section location between, the existing electromagnetism phase for generating single angle magnetic direction excitation coil
Pass method flowmeter sensor structural model has certain sensibility in the fluid of non-axis symmetry Flow Field Distribution, causes to be not used to
Its flow measurement.
Summary of the invention
The object of the present invention is to provide a kind of double group magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method, to overcome
Horizontal well production profile is containing electron opaque material and especially in the multiphase flow rate of non-axis symmetry Flow Field Distribution characteristic in the prior art
The difficulty of measurement.
To achieve the goals above, the present invention provides a kind of double group magnet exciting coil multi-electrode electromagnetism correlation method flowmeters to pass
Sensor.Double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method of the invention, can produce according to actual requirement of engineering
The magnetic direction of different angle needed for raw is suitable for horizontal well production profile multiphase flow fluid containing electron opaque material and especially in non-
The flow measurement of axially symmetric flow Field distribution characteristic can greatly improve the measurement accuracy and confidence level of instrument.
Flowmeter sensor according to the present invention, specifically can include: measurement pipe, two groups of excitation structure components, and two groups
Array detection electrode assembly, and insulation lining；Wherein, two groups of excitation structure components are mutually perpendicular to be distributed, and are arranged in flat
Row is on the same circumference of measurement pipe outer wall；Further, orthogonal two groups of excitation structures component collective effect generates uniform
And orthogonal two Vector Magnetic Fields；Two group pattern detecting electrode components are located at two generated by two groups of excitation structure components
It in a orthogonal Vector Magnetic Field, and is arranged on two sections of upstream and downstream of its flow direction in measurement pipe, this two
Mutual spacing of a section on measurement pipe axial direction is L；Insulation lining is arranged on the inner tubal wall of measurement pipe, in a reality
It applies in scheme, insulation lining is arranged on the inner wall of measurement pipe in a manner of such as bonding.
Flowmeter sensor according to the present invention, in a preferred embodiment, in above-mentioned two groups of excitation structure components,
The radical length of excitation structure component is more than or equal to the outer diameter of measurement pipe, and the axial length of excitation structure component is less than measurement
The axial length of pipe.
Flowmeter sensor according to the present invention, in a preferred embodiment, orthogonal two groups of excitation structures
Component be parallel to measurement the same of pipe outer wall evenly over the circumference arrange, also, this equably arrange it is orthogonal
In two groups of excitation structure components, symmetrical a pair of of excitation structure component is with group excitation structure component.
Flowmeter sensor according to the present invention, in a preferred embodiment, excitation structure component can also include
Magnet exciting coil, magnetic core and excitation structure fixed frame；Also, magnetic core is fixed on the center of magnet exciting coil, and by encouraging
Magnet exciting coil and magnetic core are fixed in measurement pipe by magnetic structure fixed frame.
Flowmeter sensor according to the present invention, in a preferred embodiment, in two group pattern detecting electrode components
Every group can include 8 detecting electrode components, also, 8 detecting electrode components are uniformly fixed to along measurement pipe cross section institute
Circumferencial direction tube wall on.
Flowmeter sensor according to the present invention, in a preferred embodiment, the cloth on axial direction in measurement pipe
The spacing between two sections of upstream and downstream of two group pattern detecting electrode components is set for L, i.e. between two groups of detecting electrode components
Spacing is L.Also, it is necessary to meet following condition for the value of L: between the internal field for ensuring to be formed around upstream and downstream detecting electrode
It does not interfere mutually, and ensures that upstream and downstream detecting electrode output signal has correlation.
Flowmeter sensor according to the present invention, in a preferred embodiment, in two group pattern detecting electrode components,
Every group of 8 detecting electrode components can include detecting electrode, insulation sleeve and electrode fixinig plate；Also, each detecting electrode
Across the tube wall and insulation lining of measurement pipe.
Flowmeter sensor according to the present invention, in a preferred embodiment, in two group pattern detecting electrode components,
Every group of 8 detecting electrode components can will test electrode by electrode fixinig plate and be fixed on the tube wall of measurement pipe.
Flowmeter sensor according to the present invention, in a preferred embodiment, the tube wall of detecting electrode and measurement pipe
Between pass through insulation sleeve seal off.
Double group magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method according to the present invention, design structure change
Existing flowmeter sensor based on electromagnetic correlation method becomes two groups of excitation structure components from one group of excitation structure component, and sensor exists
More uniform and mutually perpendicular two direction vectors for being in same cross section are generated under two groups of excitation structure component collective effects
Magnetic field BHAnd BV, excitation construction package E is selected when axial-rotation does not occur for sensor1And E2, generate effectively and uniformly magnetic
Field BV；Excitation construction package E is selected when axial-rotation occurs for sensor3And E4, generate effectively and uniformly magnetic field BH；Together
When according to " parallelogram " rule, can be to two Vector Magnetic Field BHAnd BVIt sums, i.e., total Vector Magnetic Field B=BH+BV, by
This can be according to two Vector Magnetic Field component B of changeHAnd BVSize and Orientation obtain different total Vector Magnetic Field B；By two pairs of detection electricity
Pole component becomes two group pattern detecting electrode components, and in measurement pipe, and two group pattern detecting electrode components are uniformly fixed respectively
On the tube wall in two sections of upstream and downstream of its flow direction, two sections spacing on the axial direction of measurement pipe is L.And
And spacing be L two group pattern detecting electrode components be located at generated under double groups of excitation structure component collective effects it is more uniform and
In mutually perpendicular Vector Magnetic Field；According to Faraday's electromagnetic induction law it is found that 8 detecting electrodes for being arranged in upstream section can
Obtain the induced electromotive force signal collection { x of 3 road effecting reaction upstream detected fluid situationsi(t) | (i=1,2,3) }, downstream section 8
A detecting electrode can obtain the induced electromotive force signal collection { y of 3 road effecting reaction downstream detected fluid situationsi(t) | (i=1,2,
3) the 1 road signal formed parallel with magnetic direction is not as useful signal }, while in the detecting electrode of 8, upstream and downstream section.Due to
It is in for the measurement pipe of L and in same more uniform and mutually perpendicular that signal is effectively detected on 3 tunnels in upstream and downstream section
It is obtained in Vector Magnetic Field, then detects signal xi(t) and yi(t) there is correlation, therefore 3 tunnel of upstream section can effectively be detected
Signal collection { xi(t) | (i=1,2,3) and 3 tunnel of downstream section effectively detect signal collection { yi(t) | (i=1,2,3) } respectively correspond
Make computing cross-correlation, cross-correlation function isBy mutual
Related operation can obtain fluid and flow through transition time collection { τ to downstream detector electrode from upstream detector electrodei(t) | (i=1,
2,3) }, and then each Local Instantaneous flow velocity collection { v is obtainedi(t)=L/ τi(t) | (i=1,2,3) }, wherein L is upstream and downstream section pair
Answer the distance of detecting electrode pair.Simultaneously using the multi-sources Information Fusion Method in patent CN104198000A to instantaneous velocity collection
{vi(t)=L/ τi(t) | (i=1,2,3) } handled, to obtain accurate mean flow rateAnd composite measurement pipe
Interior cross-sectional area S=π D2/ 4, accurate average fluid flow estimated value can be obtained
Double group magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method according to the present invention, it is advantageous that: double
The Vector Magnetic Field of multi-angle can be generated in sensor measurement region under group magnet exciting coil collective effect, survey can be obtained simultaneously in this way
Multi-angle, multipoint string end information of flow in buret are reduced in fluid containing electron opaque material and especially in non-axis symmetry flow field
Being distributed bring influences, the measurement of canbe used on line multiphase flow rate.
Compared with existing flowmeter sensor based on electromagnetic correlation method, double groups of magnet exciting coil multi-electrode electromagnetism correlation methods of the invention
Flowmeter sensor improves the magnet exciting coil group number and detecting electrode logarithm of sensor, at correlation method and Multi-source Information Fusion
Reason method combination estimated flow value can effectively solve the problem that horizontal well production profile containing electron opaque material and especially in non-axis symmetry stream
The problem of multiphase flow rate measurement of Field distribution characteristic.
Detailed description of the invention
Fig. 1 be according in the embodiment of the present invention, double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method
Structural schematic diagram；
Fig. 2 is the double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method E according in the embodiment of the present invention1
And E2The central axial cross section view of excitation structure component；
Fig. 3 is the double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method M according in the embodiment of the present invention2
And M6The central axial cross section view of detecting electrode group；
Fig. 4 is according in the embodiment of the present invention, on double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method
Swim the cross sectional profile views of array detection electrode assembly；
Fig. 5 is the double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method according in the embodiment of the present invention
The structural schematic diagram of one detecting electrode；
Fig. 6 is according in the embodiment of the present invention, on double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method
Downstream detector electrode is to different spacing L simulation result diagrams；
Fig. 7 is according in the embodiment of the present invention, and grease is in lower pair of group magnet exciting coil multi-electrode electromagnetism of Nonsymmetric conditions
The magnetic direction of axial-rotation and the structural schematic diagram of upstream detector electrode pair do not occur for correlation method flowmeter sensor；
Fig. 8 is according in the embodiment of the present invention, and grease is in lower pair of group magnet exciting coil multi-electrode electromagnetism of Nonsymmetric conditions
Correlation method flowmeter sensor is along 90 ° of axial-rotation of magnetic direction and the structural schematic diagram of upstream detector electrode pair；
Fig. 9 is according in the embodiment of the present invention, and double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method exist
The upstream and downstream detection signal results figure obtained when gas phase flow velocity is very fast；
Figure 10 is according in the embodiment of the present invention, and double groups of magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method exist
The upstream and downstream detection signal results figure obtained when gas phase flow velocity is slower.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Range of the example for illustrating the present invention, but being not intended to limit the invention.
As shown in Figures 1 to 5, according to an embodiment of the invention, double groups of magnet exciting coil multi-electrode electromagnetism correlation method flowmeters
Sensing implement body can include: 1, four excitation structure component 2 of measurement pipe, two group pattern detecting electrode components 3 and insulation lining
In 4.Four excitation structure components 2 can include excitation structure component E1~E4, excitation structure component E1~E4It is uniformly distributed in
It is parallel on the same circumference of 1 outer wall of measurement pipe.Also, in four excitation structure components 2, magnetic structure component E1~E4Radial direction
Length is more than or equal to the outer diameter of measurement pipe 1, also, magnetic structure component E1~E4Axial length be less than measurement pipe 1 axial direction it is long
Degree.Four excitation structure component E on 1 outer wall of measurement pipe1~E4In, symmetrical excitation structure component E1E2And E3E4Point
More uniform and mutually perpendicular two Wei not be can produce with group excitation structure component, two groups of excitation structure component collective effects of composition
A Vector Magnetic Field BVAnd BT, to generate the uniform magnetic field of axially distinct angle.Excitation structure component 2 can also include excitation wire
Circle 5, magnetic core 6 and excitation structure fixed frame 7；Magnetic core 6 is for example fixed on the center of magnet exciting coil 5 by way of inlaying,
Magnet exciting coil 5 and magnetic core 6 are fixed in measurement pipe 1 by excitation structure fixed frame 7；Two group pattern detecting electrode components 3
In more uniform and mutually perpendicular two Vector Magnetic Field B that two groups of excitation structure component collective effects generateVAnd BTIn, and
With spacing L arranged for interval on axial direction in measurement pipe 1, every group includes 8 detecting electrode component M1~M8；Wherein, it is measuring
8 detecting electrode component M of the upstream side of flow direction in pipe1~M8And 8 detecting electrode groups in the downstream side of flow direction
Part U1~U8It is uniformly fixed on along the tube wall of 1 circumferencial direction of measurement pipe respectively.Every group of 8 detection electricity in detecting electrode component 3
Pole component M1~M8, each of which can include detecting electrode 8, insulation sleeve 9 and electrode fixinig plate 10, and each detecting electrode 8 passes through
1 tube wall of measurement pipe and insulation lining 4, are fixed on 1 tube wall of measurement pipe, detecting electrode with electrode fixinig plate 10 and fixture nut 11
It is sealed and is isolated by insulation sleeve 9 between 8 and 1 tube wall of measurement pipe；Insulation lining 4 is for example arranged in measurement by way of pasting
On the inner tubal wall of pipe 1.The spacing between two sections of upstream and downstream that axially spaced-apart is arranged in measurement pipe is L, i.e. detecting electrode
Spacing between two arrays of electrodes component in component 3 on measurement pipe axial direction is L.
In embodiment of the Fig. 6 for double group magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method according to the present invention,
Field distribution simulation result diagram of the upstream and downstream detecting electrode to different spacing L values.To avoid shape around upstream and downstream detecting electrode
At internal field between interfere with each other and keep upstream and downstream detecting electrode output signal have certain correlation, utilize
COMSOL software carries out Electric Field Simulation modeling and takes 1 axial length 200mm of sensor measuring tube, 1 internal diameter D=12mm of measurement pipe, examines
8 diameter d=4mm of electrode is surveyed, upstream and downstream detecting electrode spacing L is taken as 24mm, 28mm, 32mm and 36mm respectively.And in Fig. 6,
(a) when being L=24mm, the internal field of each self-forming is substantially mutually indepedent around upstream and downstream detecting electrode, interferes with each other very little；
(b) when and (c) is L=28mm and 32mm, mutually it is concerned between the Liang Ge internal field of each self-forming around upstream and downstream detecting electrode
It disturbs and disappears substantially with superposition phenomenon；(d) be L=36mm when, upstream and downstream detecting electrode to formed two it is completely self-contained part electricity
, there is no interference and superposition phenomenon and keep good correlation.Therefore, the spacing L value model of upstream and downstream detecting electrode pair
It encloses for 5D/2 < L≤3D；Wherein, D is the internal diameter of measurement pipe 1.
Fig. 7 is double group magnet exciting coil multi-electrode electromagnetism correlation method streams when grease is in non-axis symmetry in the embodiment of the present invention
The magnetic direction of axial-rotation and the structural schematic diagram of upstream detector electrode pair do not occur for flowmeter transducer.Wherein, sensor is surveyed
The cross section upper layer of buret be non-conductive medium oil mutually or with conducting medium water phase fluid-mixing, lower layer is water flow, at this time, it may be necessary to
Excitation component E1E2, generate the magnetic field B of vertical directionV, and be respectively adopted perpendicular to magnetic field BVThe M in direction4M6、M3M7、M2M8
3 pairs of detecting electrodes obtain tube fluid information of flow, while according to disturbance size determinations of 3 road signals of acquisition be using mutually
Correlation method processing or direct conversion process, are parallel to magnetic field BVThe M in direction1M5Detecting electrode obtains tube fluid information of flow
Not as effective information；If the excitation component selected at this time is E3E4, with generation magnetic field BHThe perpendicular M in direction2M4、
M1M5、M6M83 pairs of detecting electrodes in may have a certain electrode and be located in non-conductive medium oil phase so that detecting electrode pair
It can not work normally in discontinuous conductive water phase.
Fig. 8 is double group magnet exciting coil multi-electrode electromagnetism correlation method streams when grease is in non-axis symmetry in the embodiment of the present invention
Flowmeter transducer is along 90 ° of axial-rotation of magnetic direction and the structural schematic diagram of upstream detector electrode pair.Wherein, sensor measurement
Pipe occur axial-rotation after cross section can still keep upper layer be non-conductive medium oil mutually or with conducting medium water phase fluid-mixing, under
The phenomenon that layer is water flow, at this time, it may be necessary to excitation component E3E4, generate the magnetic field B of vertical directionH, and be respectively adopted perpendicular to
Magnetic field BHThe M in direction2M4、M1M5And M6M83 pairs of detecting electrodes obtain tube fluid information of flow, while according to 3 tunnels of acquisition
The disturbance size determination of useful signal is to be parallel to magnetic field B using cross-correlation method processing or direct conversion processHDirection
M3M7Detecting electrode obtains tube fluid information of flow not as effective information；If equally the excitation component that selects at this time for
E1E2, with generation magnetic field BVThe perpendicular M in direction4M6、M3M7、M2M83 pairs of detecting electrodes in may have a certain electrode and be located at
In non-conductive medium oil phase, so that detecting electrode is in discontinuous conductive water phase and can not work normally.Meanwhile according to Fig. 7
Judge whether sensor rotates or rotate angle and can determine its specific location according to installation position sensor with Fig. 8.
Fig. 9 and Figure 10 is respectively in the embodiment of the present invention, and double groups of magnet exciting coil multi-electrode electromagnetism correlation method flowmeters pass
The upstream and downstream that sensor obtains under the conditions of gas phase flow velocity is very fast and relatively slow detects signal, wherein and channel 1 is detected downstream signal,
Channel 2 is upstream detection signal, and the signal in channel 1 and channel 2 has certain fluctuation, and has certain delay, therefore
Upstream and downstream two-way, which detects signal, has certain correlation, so as to examine the sensor to carry out flow velocity using correlation detection technology
With the feasibility of flow detection.
Double group magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method provided by the invention, using double groups of magnet exciting coils
Structure collective effect generates both direction and mutually perpendicular more uniform Vector Magnetic Field for sensor on measurement pipe cross section, and
Multi-angle on the cross section of upstream and downstream, multipoint can be obtained in measurement pipe by the layout stracture of two group pattern detecting electrodes
String end information of flow, can effectively reduce heterogeneous fluid influences apparatus measures bring in non-axis symmetry Flow Field Distribution.Actually answer
In, bump joint can be added in sensor measuring tube both ends tube wall, be connected by bump joint with external fluid line,
Especially is working as containing electron opaque material and flowing through sensing in the horizontal well production profile multiphase flow fluid of non-axis symmetry Flow Field Distribution
When device measurement pipe, in more uniform and mutually perpendicular two Vector Magnetic Fields that double groups of magnet exciting coil collective effects generate, above and below
Multi-angle in measurement pipe cross section, multipoint string end sense containing noise jamming can be obtained respectively by swimming two group pattern detecting electrodes
Induction signal collection.In combination with correlation method and Multi-source Information Fusion processing method, horizontal well production profile can be solved very well containing non-
Conductive materials and in non-axis symmetry Flow Field Distribution characteristic multiphase flow rate measure problem, obtain degree of precision associated flow rate and
Flow results.
It should be pointed out that flowmeter sensor according to the present invention, the above merely illustrative example of purpose of preferred embodiment is right
For those skilled in the art of the present technique, under the premise of not departing from the range of appended claims of the present invention, it can also make
Various modifications and variations, these improvements and modifications should be considered as belonging to protection scope of the present invention.
Detailed description of the invention list
1 measurement pipe
2 excitation structure components
3 detecting electrode components
4 insulation linings
5 magnet exciting coils
6 magnetic cores
7 excitation structure fixed frames
8 detecting electrodes
9 insulation sleeves
10 electrode fixinig plates
The distance between two groups of detecting electrodes of L
The internal diameter of D measurement pipe.
Claims (10)
1. a kind of double group magnet exciting coil multi-electrode flowmeter sensor based on electromagnetic correlation method, which is characterized in that the flowmeter sensing
Device includes:
Measurement pipe；
Two groups of excitation structure components, two groups of excitation structure components are mutually perpendicular to be distributed, and two groups of excitation structure groups
Part is arranged parallel on the same circumference of the measurement pipe outer wall, and orthogonal two groups of excitation structure components are common
Effect generates uniform and orthogonal two Vector Magnetic Fields；
Two group pattern detecting electrode components, the two group patterns detecting electrode component is located in described two Vector Magnetic Fields, and institute
It states on two sections of upstream and downstream that two group pattern detecting electrode components are arranged in measurement pipe on flow direction, described two sections
Spacing on the axial direction of the measurement pipe is L；And
Insulate lining, and the insulation lining is arranged on the inner tubal wall of the measurement pipe.
2. flowmeter sensor as described in claim 1, which is characterized in that in orthogonal two groups of excitation structure groups
In part, the radical length of excitation structure component is more than or equal to the outer diameter of the measurement pipe, also, the axis of the excitation structure component
It is less than the axial length of the measurement pipe to length.
3. flowmeter sensor as described in claim 1, which is characterized in that orthogonal two groups of excitation structure components
It is evenly over the circumference arranged being parallel to measurement the same of pipe outer wall, and
Wherein, in the orthogonal two groups of excitation structure components being evenly arranged in the measurement pipe outer wall, symmetrical point
A pair of of excitation structure component of cloth is with group excitation structure component.
4. such as described in any item flowmeter sensors of claim 1-3, which is characterized in that in two groups of excitation structure groups
Under the collective effect of part, the Vector Magnetic Field of multi-angle is generated in the measured zone of sensor, it is polygonal in measurement pipe to obtain simultaneously
Degree, multipoint string end information of flow.
5. flowmeter sensor as claimed in claim 4, which is characterized in that the excitation structure component can also include excitation
Coil, magnetic core and excitation structure fixed frame；Also, the magnetic core is fixed on the center of the magnet exciting coil, and leads to
It crosses the excitation structure fixed frame magnet exciting coil and the magnetic core are fixed in the measurement pipe.
6. flowmeter sensor as described in claim 1, which is characterized in that every group of the two group patterns detecting electrode component
Include 8 detecting electrode components；And
In the measurement pipe, every group of 8 detecting electrode components of the two group patterns detecting electrode component cutting where it
It is evenly distributed on face on the tube wall of the circumferencial direction of the measurement pipe.
7. flowmeter sensor as claimed in claim 6, which is characterized in that between the two group patterns detecting electrode component
Spacing is L, and wherein the value of L meets the following conditions: between the internal field for ensuring to be formed around upstream and downstream detecting electrode mutually
It does not interfere, and ensures that upstream and downstream detecting electrode output signal has correlation.
8. flowmeter sensor as claimed in claim 6, which is characterized in that in the two group patterns detecting electrode component, often
8 detecting electrode components of group include detecting electrode, insulation sleeve and electrode fixinig plate；Also, each detecting electrode is worn
Cross the tube wall and insulation lining of the measurement pipe.
9. flowmeter sensor as claimed in claim 8, which is characterized in that in the two group patterns detecting electrode component, often
The detecting electrode is fixed on the tube wall of the measurement pipe by the electrode fixinig plate by 8 detecting electrode components of group
On.
10. flowmeter sensor as claimed in claim 9, which is characterized in that the pipe of the detecting electrode and the measurement pipe
It is sealed off between wall by insulation sleeve.
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| CN201810874513.3A CN109115286B (en) | 2018-08-03 | 2018-08-03 | Flowmeter sensor with double-group excitation coil and multiple electrodes by electromagnetic correlation method |
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| CN201810874513.3A CN109115286B (en) | 2018-08-03 | 2018-08-03 | Flowmeter sensor with double-group excitation coil and multiple electrodes by electromagnetic correlation method |
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| CN111307230A (en) * | 2020-03-02 | 2020-06-19 | 西门子传感器与通讯有限公司 | Electromagnetic flowmeter |
| CN111504402A (en) * | 2019-01-30 | 2020-08-07 | 燕山大学 | Sensor parameter optimization method and device, controller and medium |
| CN111811593A (en) * | 2020-07-02 | 2020-10-23 | 中国石油天然气股份有限公司 | Internal flow type four-electrode electromagnetic flow instrument system for horizontal well |
| CN111946325A (en) * | 2020-08-21 | 2020-11-17 | 燕山大学 | Unimpeded oil gas water multiphase flow parameter oil production combined logging instrument |
| CN112146715A (en) * | 2020-08-26 | 2020-12-29 | 沈阳兰申电器有限公司 | Excitation method of electromagnetic flowmeter with magnetic field conforming to weight distribution |
| CN112461305A (en) * | 2020-11-16 | 2021-03-09 | 西南石油大学 | Novel multi-coil array flow electromagnetic measurement device and measurement method |
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