CN102661994A - Water-gas phase volume fraction detection device based on spiral inductance sensor and detection method thereof - Google Patents
Water-gas phase volume fraction detection device based on spiral inductance sensor and detection method thereof Download PDFInfo
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- CN102661994A CN102661994A CN2012101728657A CN201210172865A CN102661994A CN 102661994 A CN102661994 A CN 102661994A CN 2012101728657 A CN2012101728657 A CN 2012101728657A CN 201210172865 A CN201210172865 A CN 201210172865A CN 102661994 A CN102661994 A CN 102661994A
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Abstract
The invention discloses a water-gas phase volume fraction detection device based on a spiral inductance sensor and a detection method thereof. The water-gas phase volume fraction detection device comprises an inductance sensor, an exciting circuit, a detection circuit, an inductance measurer, and a data processing device, wherein the inductance sensor comprises an exciting coil and a detection coil; the exciting coil and the detection coil are spirally wound on an outer wall of an external pipeline; the exciting circuit is connected with the exciting coil through a circuit, and is used for exciting the exciting coil; the detection circuit is connected with the detection coil through a circuit and is used for detecting the detection coil; the inductance measurer is connected with the detection circuit and is used for detecting an inductance value between the detection coil and the exciting coil; and the data processing device is connected with the inductance measurer through a data wire. With the adoption of the detection device and the detection method thereof provided by the invention, no contact of the detector and the inside of the pipeline can be realized, so that the inside of the pipeline is not immersed. Not only can the pipeline be prevented from damages, but also the water-gas phase flow pattern is not changed. The water-gas phase volume fraction detection device can conveniently, rapidly and accurately measure the water-gas phase volume fraction detection in the pipeline.
Description
Technical field
The present invention relates to a kind of aqueous vapor phase content sniffer and detection method, particularly a kind of aqueous vapor phase content sniffer and detection method thereof based on the spiral inductance sensor.
Background technology
Modernization industry produce and daily life in, biphase gas and liquid flow has appearred in growing field, like the conveying of oil gas field, soda production, the gasification unit of thermoelectric nuclear power, the transportation of low-boiling point liquid etc.And two-phase flow at first will solve is exactly the flow detection problem of gas-liquid two-phase, but because complicacy, the randomness of two-phase flow fluid, and its flow detection is still among further research.
In existing method of testing; Two kinds of partition method and direct methods are arranged: partition method need be separated gas-liquid two-phase, and then measures with single-phase flow instrument respectively, therefore gas phase and liquid phase flow instrument need be set respectively; Both increase cost, reduced efficient again; Direct method adopts Venturi tube method or sonde method mostly.Wherein, direct method wastes time and energy, and it is huge to consume energy, and more can not realize directly detecting in real time; And direct method can change pipeline configuration, even invades pipe interior, changes flow pattern; The installation of Venturi tube and probe is all comparatively complicated in addition, and inconvenience is implemented.
Summary of the invention
The purpose of this invention is to provide a kind of aqueous vapor phase content sniffer and detection method thereof based on the spiral inductance sensor; Can accomplish that detection instrument and pipe interior are really contactless; Do not invade pipe interior, not only can not damage pipeline, and can not change the flow pattern of aqueous vapor phase; Can measure the phase content of biphase gas and liquid flow in the pipeline easily and fast, exactly.
In order to realize above purpose, the present invention realizes through following technical scheme:
A kind of aqueous vapor phase content sniffer based on the spiral inductance sensor comprises:
Inductance sensor, described inductance sensor comprises drive coil and magnetic test coil, and described drive coil and magnetic test coil are spirally wound on the outside pipeline outer wall;
Exciting circuit, described exciting circuit links to each other with drive coil through circuit, and this exciting circuit encourages drive coil;
Testing circuit, described testing circuit links to each other with magnetic test coil through circuit, and this testing circuit detects magnetic test coil;
Inductance measuring meter, described inductance measuring meter links to each other with testing circuit, measures the mutual inductance value between magnetic test coil and the drive coil;
Data processing equipment, described data processing equipment links to each other with inductance measuring meter through data line.
Described drive coil and magnetic test coil do not intersect mutually.
The coiling mode of described drive coil and magnetic test coil is all identical with coiling density.
The scope of the number of turns of described drive coil is 3 ~ 200 circles.
The diameter range of the coiling of described drive coil is 0.1mm ~ 10mm.
The diameter range of the diameter range of the coiling of described magnetic test coil and the scope of number of turns and the coiling of drive coil and the scope of number of turns are identical.
Described data processing equipment is a host computer.
A kind of detection method of the aqueous vapor phase content based on the spiral inductance sensor comprises following steps:
Step 1: when water in the pipeline of outside is zero, apply pumping signal to the drive coil of inductance sensor, again through the gas phase mutual inductance value on the magnetic test coil of testing circuit and inductance measuring meter inductance measuring sensor through exciting circuit; When pipeline entirely for water is gas phase when being zero, use with the identical method of measurement of gas phase mutual inductance value and record the water mutual inductance value on the magnetic test coil;
Step 2: gas phase mutual inductance value measured in the step 1 and water mutual inductance value are imported data processing equipment through data line, and this data processing equipment storage gas phase mutual inductance value and water mutual inductance value are as the mutual inductance calibration value;
Step 3: when passing through detected fluid in the pipeline of outside, apply pumping signal, measure the real-time mutual inductance value of magnetic test coil through testing circuit and inductance measuring meter through exciting circuit;
Step 4: real-time mutual inductance value measured in the step 3 is imported data processing equipment through data line;
Step 5: data processing equipment is through calculating mutual inductance value relatively in real time and as gas phase mutual inductance value and the water mutual inductance value of mutual inductance calibration value, extrapolating the phase content of the interior biphase gas and liquid flow of pipeline.
The present invention compared with prior art has the following advantages:
1, can accomplish that detection instrument and pipe interior are really contactless, not invade pipe interior, not only can not damage pipeline, and can not change the flow pattern of aqueous vapor phase, detection data accurately and reliably;
2, can measure the phase content of biphase gas and liquid flow in the pipeline easily and fast, exactly.
Description of drawings
Fig. 1 is the structural representation that the present invention is based on the aqueous vapor phase content sniffer of spiral inductance sensor;
Fig. 2 is the structural representation of inductance sensor that the present invention is based on the aqueous vapor phase content sniffer of spiral inductance sensor.
Embodiment
Below in conjunction with accompanying drawing,, the present invention is done further elaboration through specifying a preferable specific embodiment.
As shown in Figure 1, a kind of aqueous vapor phase content sniffer based on the spiral inductance sensor comprises: inductance sensor 2, exciting circuit 1, testing circuit 3, inductance measuring meter 4, data processing equipment 5.
Wherein, As shown in Figure 2, inductance sensor 2 comprises drive coil 21 and magnetic test coil 22, and drive coil 21 is spirally wound on outside pipeline 6 outer walls with magnetic test coil 22; Drive coil 21 does not intersect with magnetic test coil 22 mutually, and their coiling mode is all identical with coiling density.In the present embodiment; The scope of the number of turns of drive coil 21 and magnetic test coil 22 is respectively 3 ~ 200 circles; The diameter range of the coiling of drive coil 21 and magnetic test coil 22 is 0.1mm ~ 10mm, and the diameter range of the diameter range of the drive coil 21 and the coiling of magnetic test coil 22 and the scope of number of turns and the coiling of drive coil 21 and the scope of number of turns are identical.
As shown in Figure 1, exciting circuit 1 links to each other with drive coil 21 through circuit, and 1 pair of drive coil 21 of this exciting circuit encourages, and makes drive coil 21 produce the high frequency sinusoidal excitation signal that can penetrate outside pipeline 6 inside; Testing circuit 3 links to each other with magnetic test coil 22 through circuit, and 3 pairs of magnetic test coils 22 of this testing circuit detect, and can obtain the induced voltage on the magnetic test coil 22; Inductance measuring meter 4 links to each other with testing circuit 3, thereby measures the mutual inductance value between magnetic test coil 22 and the drive coil 21; Data processing equipment 5 links to each other with inductance measuring meter 4 through data line.In the present embodiment; Inductance measuring meter 4 is selected electric impedance analyzer for use; Like model is the electric impedance analyzer of Agilent 4284, and data processing equipment 5 is a host computer, through data line; The mutual inductance value that this host computer records inductance measuring meter 4 through data line imports host computer and analyzes, thereby extrapolates the phase content of the biphase gas and liquid flow in the external pipe 6.
Therefore, sniffer has no with pipeline 6 inside and contacts, owing to need not invade pipe interior, thereby not only can not damage pipeline, and and can not change the flow pattern of aqueous vapor phase, make detection data accurately and reliably.
Through the sniffer of above-mentioned aqueous vapor phase content based on the spiral inductance sensor, it is surveyed through following steps and realizes:
Step 1: when water in the pipeline 6 of outside is zero, apply pumping signal to the drive coil 21 of inductance sensor 2, again through the gas phase mutual inductance value on the magnetic test coil 22 of testing circuit 3 and inductance measuring meter 4 inductance measuring sensors 2 through exciting circuit 1; When pipeline 6 entirely for water is gas phase when being zero, use with the identical method of measurement of gas phase mutual inductance value and record the water mutual inductance value on the magnetic test coil 22; In the present embodiment, gas phase mutual inductance value is set at L0, and water mutual inductance value is set at L1;
Step 2: gas phase mutual inductance value measured in the step 1 and water mutual inductance value are imported data processing equipment 5 through data line, and these data processing equipment 5 storage gas phase mutual inductance values and water mutual inductance value are as the mutual inductance calibration value;
Step 3: when passing through detected fluid in the pipeline 6 of outside, apply pumping signal through exciting circuit 1, through the real-time mutual inductance value of testing circuit 3 with inductance measuring meter 4 measurement magnetic test coils 22, in the present embodiment, the mutual inductance value is set at L in real time;
Step 4: real-time mutual inductance value measured in the step 3 is imported data processing equipment 5 through data line;
Step 5: data processing equipment 5 is big or small as the variation of gas phase mutual inductance value L0 that demarcates the mutual inductance value and water mutual inductance value L1 relatively through relatively surveying mutual inductance value L; Can confirm the phase content of the pipeline 6 interior biphase gas and liquid flows of outside circle; Promptly pass through computing formula: the phase content of biphase gas and liquid flow=(L-L0)/(L1-L0), can extrapolate the phase content of the biphase gas and liquid flow in the pipeline 6.
In sum; The present invention a kind of aqueous vapor phase content sniffer and detection method thereof based on the spiral inductance sensor; Can accomplish that detection instrument and pipe interior are really contactless, not invade pipe interior, not only can not damage pipeline; And can not change the flow pattern of aqueous vapor phase, detection data is accurately and reliably; Can measure the phase content of biphase gas and liquid flow in the pipeline easily and fast, exactly.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (8)
1. the aqueous vapor phase content sniffer based on the spiral inductance sensor is characterized in that, comprises:
Inductance sensor (2), described inductance sensor (2) comprise drive coil (21) and magnetic test coil (22), and described drive coil (21) and magnetic test coil (22) are spirally wound on outside pipeline (6) outer wall;
Exciting circuit (1), described exciting circuit (1) links to each other with drive coil (21) through circuit, and this exciting circuit (1) encourages drive coil (21);
Testing circuit (3), described testing circuit (3) links to each other with magnetic test coil (22) through circuit, and this testing circuit (3) detects magnetic test coil (22);
Inductance measuring meter (4), described inductance measuring meter (4) links to each other with testing circuit (3), measures the mutual inductance value between magnetic test coil (22) and the drive coil (21);
Data processing equipment (5), described data processing equipment (5) links to each other with inductance measuring meter (4) through data line.
2. the aqueous vapor phase content sniffer based on the spiral inductance sensor according to claim 1 is characterized in that described drive coil (21) and magnetic test coil (22) do not intersect mutually.
3. the aqueous vapor phase content sniffer based on the spiral inductance sensor according to claim 2 is characterized in that, the coiling mode of described drive coil (21) and magnetic test coil (22) is all identical with coiling density.
4. the aqueous vapor phase content sniffer based on the spiral inductance sensor according to claim 3 is characterized in that the scope of the number of turns of described drive coil (21) is 3 ~ 200 circles.
5. the aqueous vapor phase content sniffer based on the spiral inductance sensor according to claim 4 is characterized in that the diameter range of the coiling of described drive coil (21) is 0.1mm ~ 10mm.
6. the aqueous vapor phase content sniffer based on the spiral inductance sensor according to claim 5; It is characterized in that the diameter range of the diameter range of the coiling of described magnetic test coil (22) and the scope of number of turns and the coiling of drive coil (21) and the scope of number of turns are identical.
7. the aqueous vapor phase content sniffer based on the spiral inductance sensor according to claim 1 is characterized in that described data processing equipment (5) is a host computer.
8. the detection method based on the aqueous vapor phase content of spiral inductance sensor is characterized in that, comprises following steps:
Step 1: when water in the pipeline (6) of outside is zero; Apply pumping signal through the drive coil (21) of exciting circuit (1), again through the gas phase mutual inductance value on the magnetic test coil (22) of testing circuit (3) and inductance measuring meter (4) inductance measuring sensor (2) to inductance sensor (2); When pipeline (6) Quan Weishui is a gas phase when being zero, use with the identical method of measurement of gas phase mutual inductance value and record the water mutual inductance value on the magnetic test coil (22);
Step 2: gas phase mutual inductance value measured in the step 1 and water mutual inductance value are imported data processing equipment (5) through data line, and this data processing equipment (5) storage gas phase mutual inductance value and water mutual inductance value are as the mutual inductance calibration value;
Step 3: when passing through detected fluid in the pipeline (6) of outside, apply pumping signal, measure the real-time mutual inductance value of magnetic test coil (22) through testing circuit (3) and inductance measuring meter (4) through exciting circuit (1);
Step 4: real-time mutual inductance value measured in the step 3 is imported data processing equipment (5) through data line;
Step 5: data processing equipment (5) is through calculating mutual inductance value relatively in real time and as gas phase mutual inductance value and the water mutual inductance value of mutual inductance calibration value, extrapolating the phase content of the interior biphase gas and liquid flow of pipeline (6).
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| CN102901877A (en) * | 2012-11-12 | 2013-01-30 | 上海海事大学 | Noncontact measurement device and method for measuring electrical conductivity of electrolyte solution by using coaxial coils |
| CN104820013A (en) * | 2015-04-20 | 2015-08-05 | 天津大学 | Two-phase flow content measuring method based on electromagnetic eddy detection |
| CN107367543A (en) * | 2017-07-17 | 2017-11-21 | 曲阜师范大学 | Bubble measurement apparatus in molten metal based on spiral electromagnetic sensor |
| CN109115869A (en) * | 2018-09-29 | 2019-01-01 | 西安交通大学 | For the S type Array eddy-current probe and detection method of steel rope fault defects detection |
| CN109557169A (en) * | 2018-11-27 | 2019-04-02 | 河南师范大学 | A kind of high s/n ratio biphase gas and liquid flow measuring of phase ratio method of span saddle structure |
| CN111157591A (en) * | 2020-01-05 | 2020-05-15 | 天津大学 | Staggered double-helix high-frequency sensor for measuring water holding rate and measuring system |
| CN115128127A (en) * | 2022-09-01 | 2022-09-30 | 珠江水利委员会珠江水利科学研究院 | Method for detecting water content of hydraulic engineering material |
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| CN111157591A (en) * | 2020-01-05 | 2020-05-15 | 天津大学 | Staggered double-helix high-frequency sensor for measuring water holding rate and measuring system |
| CN111157591B (en) * | 2020-01-05 | 2022-07-08 | 天津大学 | Staggered double-helix high-frequency sensor for measuring water holding rate and measuring system |
| CN115128127A (en) * | 2022-09-01 | 2022-09-30 | 珠江水利委员会珠江水利科学研究院 | Method for detecting water content of hydraulic engineering material |
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Application publication date: 20120912 |