CN201476825U - Electrical resistance tomography correcting electromagnetic flow meter - Google Patents
Electrical resistance tomography correcting electromagnetic flow meter Download PDFInfo
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- CN201476825U CN201476825U CN2009201640300U CN200920164030U CN201476825U CN 201476825 U CN201476825 U CN 201476825U CN 2009201640300 U CN2009201640300 U CN 2009201640300U CN 200920164030 U CN200920164030 U CN 200920164030U CN 201476825 U CN201476825 U CN 201476825U
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- electrical resistance
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Abstract
The utility model discloses an electrical resistance tomography correcting electromagnetic flow meter, which relates to the field of two-phase flow meters. The electrical resistance tomography correcting electromagnetic flow meter aims to solve the problem that currently widely adopted common electromagnetic flow meters have the shortcomings of inaccurate measured values or fluctuation when measuring two-phase flow with a continuous liquid-phase process, and simultaneously existing solutions are not easy to be realized. The electromagnetic flow meter comprises a flow sensor, a flow converter, a display and a correcting system, wherein the flow sensor, the flow converter, and the correcting system and the display are sequentially electrically connected; the correcting system includes a computer control unit, a data acquisition unit, an electrode array, an image reconstruction unit and an image analysis unit which are sequentially electrically connected. The electromagnetic flow meter has the advantages of high measurement accuracy, strong operability and convenient use when measuring the two-phase flow with the continuous liquid-phase process.
Description
The utility model relates to the two-phase flow metering field, and especially liquid phase is the electromagnetic flowmeter of the flux modification metering usefulness of external phase process in the two-phase flow.
Background technology
At present; widely used common electrical magnetic flowmeter is made up of flow sensor, flow converter and display; when using it to measure fluid flow; run into the situation that contains bubble in the fluid to be measured through regular meeting; cause measured value to be forbidden or fluctuation, generally solve usually with the way of changing installation site or installation exhaust apparatus.Yet under a lot of situations, these two kinds of methods all are not easy again to realize.
And such a liquid-gas two-phase flow a kind of mixed flow pattern of extensive existence exactly.Along with improving constantly of commercial production levels, also more and more urgent to the needs that diphasic stream parameter is measured, relevant research is subjected to domestic and international expert's generally attention.
The utility model content
The purpose of this utility model provides the electromagnetic flowmeter that liquid phase in a kind of two-phase flow is the flux modification metering usefulness of external phase process, has the measuring accuracy height, workable, easy to use characteristics.
The technical scheme that realizes above-mentioned utility model purpose is as follows:
A kind of Electrical Resistance Tomography school difference electromagnetic flowmeter, comprise flow sensor, flow converter and display, it is characterized in that, also comprise school difference system, described flow sensor, flow converter, school difference system and display are electrically connected successively, the poor system in described school is made up of computer control unit, data acquisition unit, electrod-array, image reconstruction unit and image analyzing unit, is electrically connected successively between each ingredient.
The flow sensor of Electrical Resistance Tomography school difference electromagnetic flowmeter is installed on the industrial process pipeline, and its effect is that the liquid volume flow value in the flowing into pipeline is transformed into the induced potential signal linearly, and by transmission line this signal is delivered to flow converter.Flow converter is installed in from the not far place of flow sensor, and the flow signal that it sends flow sensor here amplifies, and converts the standard electric signal output that flow signal is directly proportional to, to show accumulation and adjusting control.
The school difference system of Electrical Resistance Tomography school difference electromagnetic flowmeter, by measuring liquid phase in the two-phase flow is that the liquid-gas flow type phase content of external phase is proofreaied and correct and obtained actual fluid flow, the electrod-array of school difference system is uniformly-spaced arranged by the electrode of particular design, control module (computing machine) sends instruction to data acquisition unit, apply exciting current for certain a pair of electrode, set up responsive in process object inside.Voltage signal on the Measured Boundary send image reconstruction unit with the measurement data that obtains, and reconstructs the distribution of conductivity of object inside with suitable algorithm, thereby obtains medium distributed image (two dimension or three-dimensional).Send image analyzing unit at last, the physical significance of image is explained, extract relevant characteristic parameter and flow pattern, calculate phase content, for error correction provides foundation.
The utlity model has following beneficial effect:
In the common electrical magnetic flowmeter, be aided with Electrical Resistance Tomography, by both organic combinations, realized to liquid phase in the two-phase flow being the flux modification metering of external phase process, the measured value that exists at present diphasic stream parameter being measured inaccurate or fluctuation and the present difficult again problem that realizes of solution have been solved, has the measuring accuracy height, workable, easy to use advantage.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of instructions, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the workflow block scheme of the utility model Electrical Resistance Tomography school difference electromagnetic flowmeter.
Embodiment
Below in conjunction with accompanying drawing technical solutions of the utility model are described further
Embodiment 1
As shown in Figure 1, a kind of Electrical Resistance Tomography school difference electromagnetic flowmeter, comprise the flow sensor, flow converter, school difference system and the display that are electrically connected successively, school difference system is made up of computer control unit, data acquisition unit, electrod-array, image reconstruction unit and image analyzing unit, is electrically connected successively between each ingredient.
The electrod-array of school difference system is uniformly-spaced arranged by the electrode of particular design, and control module (computing machine) sends instruction to data acquisition unit, applies exciting current for certain a pair of electrode, sets up responsive in process object inside.Voltage signal on the Measured Boundary send image reconstruction unit with the measurement data that obtains, and reconstructs the distribution of conductivity of object inside with suitable algorithm, thereby obtains medium distributed image (two dimension or three-dimensional).Send image analyzing unit at last, the physical significance of image is explained, extract relevant characteristic parameter and flow pattern, calculate phase content, for error correction provides foundation.By the adjustment of the poor system in above-mentioned school, just can record accurate relatively liquid-gas two-phase flow.
It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (1)
1. an Electrical Resistance Tomography school differs from electromagnetic flowmeter, comprise flow sensor, flow converter and display, it is characterized in that, also comprise school difference system, described flow sensor, flow converter, school difference system and display are electrically connected successively, the poor system in described school is made up of computer control unit, data acquisition unit, electrod-array, image reconstruction unit and image analyzing unit, is electrically connected successively between each ingredient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201640300U CN201476825U (en) | 2009-07-14 | 2009-07-14 | Electrical resistance tomography correcting electromagnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201640300U CN201476825U (en) | 2009-07-14 | 2009-07-14 | Electrical resistance tomography correcting electromagnetic flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201476825U true CN201476825U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201640300U Expired - Fee Related CN201476825U (en) | 2009-07-14 | 2009-07-14 | Electrical resistance tomography correcting electromagnetic flow meter |
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| CN (1) | CN201476825U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163769A (en) * | 2018-09-03 | 2019-01-08 | 山西省地质矿产研究院(山西省煤层气测试技术研究院) | A kind of pipeline flow electromagnetic array sensor and its detection method |
| CN109690260A (en) * | 2016-09-12 | 2019-04-26 | 泰克福成像有限责任公司 | Displacement current phase tomography for lossy media imaging |
| US10371656B2 (en) | 2014-09-15 | 2019-08-06 | University Of Leeds | Tomography apparatus and method |
| US10732017B2 (en) | 2014-09-15 | 2020-08-04 | University Of Leeds | Tomography apparatus, multi-phase flow monitoring system, and corresponding methods |
-
2009
- 2009-07-14 CN CN2009201640300U patent/CN201476825U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10371656B2 (en) | 2014-09-15 | 2019-08-06 | University Of Leeds | Tomography apparatus and method |
| US10732017B2 (en) | 2014-09-15 | 2020-08-04 | University Of Leeds | Tomography apparatus, multi-phase flow monitoring system, and corresponding methods |
| CN109690260A (en) * | 2016-09-12 | 2019-04-26 | 泰克福成像有限责任公司 | Displacement current phase tomography for lossy media imaging |
| CN109163769A (en) * | 2018-09-03 | 2019-01-08 | 山西省地质矿产研究院(山西省煤层气测试技术研究院) | A kind of pipeline flow electromagnetic array sensor and its detection method |
| CN109163769B (en) * | 2018-09-03 | 2020-02-07 | 山西省地质矿产研究院(山西省煤层气测试技术研究院) | Detection method of pipeline flow electromagnetic array sensor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20120714 |