CN102661764B - Quartz tube electromagnetic flow sensor - Google Patents
Quartz tube electromagnetic flow sensor Download PDFInfo
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- CN102661764B CN102661764B CN201210165652.1A CN201210165652A CN102661764B CN 102661764 B CN102661764 B CN 102661764B CN 201210165652 A CN201210165652 A CN 201210165652A CN 102661764 B CN102661764 B CN 102661764B
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- quartz ampoule
- quartz tube
- quartz
- permanent magnet
- electromagnetic flow
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Abstract
The invention relates to a device for measuring flow of fluid in pipelines, in particular to a quartz tube electromagnetic flow sensor which comprises a permanent magnet and an extraction electrode wire penetrating through the permanent magnet. The quartz tube electromagnetic flow sensor is characterized in that the permanent magnet is arranged on a quartz tube, a flexible lining is coated on the outer surface of the quartz tube, a conductive ceramic electrode connected with the extraction electrode wire is arranged on the quartz tube, and two ends of the quartz tube are clamped in quartz jackets. The quartz tube electromagnetic flow sensor is simple in structure, small in size, simple in production process, high in applicability, resistant to abrasion and high in temperature, less prone to damage and the like.
Description
Technical field
The present invention relates to a kind of measurement mechanism of pipeline inner fluid flow, specifically a kind of quartz ampoule electromagnetic flow transducer.
Background technology
At present, electromagnetic flowmeter is that active procedure is controlled and the most a kind of flow measurement mode of flow metering aspect application.Electromagnetic flow-measurement device is all based on Faraday's electromagnetic induction law, carrys out the volumetric flow rate of conducting medium in measuring tube.The technology process development of nearly 50 years of the electromagnetic flowmeter of full packages formula, very ripe.Current every country and domestic technology, aspect sensor, all take at metal section, and the form of the multiple linings such as liner rubber lining, tetrafluoro lining, PFA lining, all needs to use electrode probe, through instrument housing and lining, directly contacts with medium.When measuring high-temperature high concentration hydrochloric acid, hydrofluorite, oleum, the contour corrosion type of nitric acid medium, the material of potential electrode all needs there is special requirement, such as using tantalum metal to do electrode, uses platinum to do electrode, these noble metals are expensive, complex process; In the time need to measuring mud, mortar, slip, red mud etc. and carry the medium of a large amount of solid particles, the wearing and tearing of liner, the wearing and tearing of electrode all serious shortening the serviceable life of electromagnetic flowmeter.In process conditions, change under more violent process environments, the installation of lining liner, electrode material also has special rules, prevent from expanding with heat and contract with cold, inner metal tension, the special process such as gathering sealing that expands wanted, to reduce, electrode and lining joint portion leak, the problem of decreasing insulating.The place that needs high-temperature sterilization at field of medicaments, electromagnetic flowmeter need to bear the problem of steam more than 150 degree, all instrument has been proposed to acid test.Have a greatly reduced quality the serviceable life of instrument.
Publication number is CN2072215U Chinese patent, disclose and there is the ceramic pipe composite structure of sheath and the electromagnetic flowmeter of integral sintering electrode structure, in design theory, realized breakthrough, but in the technique realizing, ceramic lined fragility is high, and the joint portion of conductivity ceramics and insulating ceramics exists serious interface debonding, and sintering temperature is up to more than 1000 degree, what field coil was used is enameled wire, can not bear so high temperature.Market demand a kind of practicable, the technological problems, universal anticorrosion electromagnetic flowmeter production problem, that cost can be controlled that solve.
Summary of the invention
The technical problem to be solved in the present invention, solve exactly the high temperature sintering that cannot overcome at present of traditional ceramics electromagnetic flowmeter, the problem that pottery is frangible, sintered shell yield rate is low, and have simple in structure, volume is little, and production technology is simple, and applicability is wide, vibration resistance, cracky not, resistant to elevated temperatures New Electromagnetic Flowmeter, quartz ampoule electromagnetic flow transducer.
The concrete technical scheme that the present invention adopts is:
A kind of quartz ampoule electromagnetic flow transducer, comprise permanent magnet and through the extraction electrode line of permanent magnet, it is characterized in that, permanent magnet is arranged on quartz ampoule, the outside surface of quartz ampoule is covered with flexible liners, on quartz ampoule, be also provided with conductivity ceramics electrode and be connected with extraction electrode line, described quartz ampoule two ends are clamped in quartz sheath.
The material of described ceramic electrode is barium stannate based conductive ceramics, and its composition can be used Formula B aSb
[x]sn
[1-x]o
[3]represent, wherein 0 < x≤0.2.By this material, replace the platinum electrode in electromagnetic flowmeter, normal temperature conducts electricity very well. can save a large amount of platinum. and reduce costs and reach 99%, the erosion of the various concentration strong acid of ceramic electrode ability of the present invention, after the moulding integrated sinter molding of single-unit, this stupalith cost is low, good conductivity, stable chemical performance, resistivity stable, high temperature resistant.Resistivity at room temperature can reach below 1.0 Ω .cm, and preparation technology is simple, stable, practical.
Described quartz ampoule is divided into two-layer, and skin is nonconducting quartz layer, and its material is by weight percentage: quartzy 90-95wt%, zirconia 3-9%, boric acid 1-3%; Internal layer is conductive layer, and its material is by weight percentage: quartzy 80-85%, four antimony chloride 15-20%.Described conductive layer preferably not exclusively covers non-conductive layer, preferably at quartz ampoule two ends and electrode contact place cover.
The installation of quartz ampoule adopts is that the mode of two sections of clampings is installed, and the part that this just need to be connected with pipeline, has good ductility, and the soft class lining part around it, is not afraid of broken.
In the present invention, the installation of high orientation magnetic conductor, the installation of field coil, assembled formation, the steps such as test adopt prior art.
Compared with prior art, the present invention has simple in structure, and volume is little, and production technology is simple, and applicability is wide, vibration resistance, and the breakage that differs, the advantage such as high temperature resistant, and solved ceramic frangible, the problem such as sintered shell yield rate is low.
Accompanying drawing explanation
The present invention is further described with implementation example by reference to the accompanying drawings.
Fig. 1 is structural representation of the present invention;
Fig. 2 is quartz ampoule section structure schematic diagram of the present invention.
In figure, 1-extraction electrode line, 2-permanent magnet, 3-quartz ampoule, 4-quartz sheath, 5-conductivity ceramics electrode, 6-flexible liners; 3-1 is conductive layer, and 3-2 is nonconducting quartz layer.
Embodiment
As shown in Figure 1, a kind of quartz ampoule electromagnetic flow transducer, comprise permanent magnet 2 and through the extraction electrode line 1 of permanent magnet 2, permanent magnet 2 is arranged on quartz ampoule 3, the outside surface of quartz ampoule 3 is covered with flexible liners 6, on quartz ampoule 3, be also provided with conductivity ceramics electrode 5 and be connected with extraction electrode line 1, described quartz ampoule 3 two ends are clamped in quartz sheath 4.
As shown in Figure 2, described quartz ampoule is divided into two-layer, and skin is nonconducting quartz layer 3-2, and its material is by weight percentage: quartzy 90-95wt%, zirconia 3-9%, boric acid 1-3%; Internal layer is conductive layer 3-1, and its material is by weight percentage: quartzy 80-85%, four antimony chloride 15-20%.
The material of described ceramic electrode 5 is barium stannate based conductive ceramics, and its composition can be used Formula B aSb
[x]sn
[1-x]o
[3]represent, wherein 0 < x≤0.2.
Claims (1)
1. a quartz ampoule electromagnetic flow transducer, comprise permanent magnet and through the extraction electrode line of permanent magnet, it is characterized in that, permanent magnet is arranged on quartz ampoule, the outside surface of quartz ampoule is covered with flexible liners, on quartz ampoule, be also provided with conductivity ceramics electrode and be connected with extraction electrode line, described quartz ampoule two ends are clamped in quartz sheath;
The material of described ceramic electrode is barium stannate based conductive ceramics, and its composition can be used Formula B asb
[x]sn
[1-x]o
[3]represent, wherein 0 < x≤0.2;
Described quartz ampoule is divided into two-layer, and skin is nonconducting quartz layer, and its material is by weight percentage: quartzy 90-95wt%, zirconia 3-9%, boric acid 1-3%; Internal layer is conductive layer, and its material is by weight percentage: quartzy 80-85%, four antimony chloride 15-20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165652.1A CN102661764B (en) | 2012-05-25 | 2012-05-25 | Quartz tube electromagnetic flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165652.1A CN102661764B (en) | 2012-05-25 | 2012-05-25 | Quartz tube electromagnetic flow sensor |
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| Publication Number | Publication Date |
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| CN102661764A CN102661764A (en) | 2012-09-12 |
| CN102661764B true CN102661764B (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210165652.1A Active CN102661764B (en) | 2012-05-25 | 2012-05-25 | Quartz tube electromagnetic flow sensor |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2072215U (en) * | 1990-06-06 | 1991-02-27 | 机械电子工业部上海工业自动化仪表研究所 | Ceramic electromagnetic flow meter |
| DE102006018728A1 (en) * | 2006-04-20 | 2007-10-25 | Endress + Hauser Flowtec Ag | Device for measuring the volume or mass flow of a medium |
| DE102006023916A1 (en) * | 2006-05-19 | 2007-11-22 | Endress + Hauser Flowtec Ag | Magnetic-inductive flowmeter |
| CN200962044Y (en) * | 2006-10-11 | 2007-10-17 | 上海埃克仪器仪表有限公司 | Built-in micro penetration diameter electromagnetic flow sensor |
| JP2009288026A (en) * | 2008-05-28 | 2009-12-10 | Toshiba Corp | Electromagnetic flowmeter |
| CN101402522A (en) * | 2008-10-31 | 2009-04-08 | 桂林电子科技大学 | Novel stannic acid barium based conductive ceramics and method of manufacturing the same |
| CN101699227A (en) * | 2009-11-02 | 2010-04-28 | 北京航空航天大学 | Capacitance-type electromagnetic flow transducer with rectangular cross section structure |
| JP2012008108A (en) * | 2010-06-28 | 2012-01-12 | Toshiba Corp | Electromagnetic flow meter |
| CN201787978U (en) * | 2010-08-25 | 2011-04-06 | 重庆川仪自动化股份有限公司 | Measuring pipe of electromagnetic flow meter |
| CN202562536U (en) * | 2012-05-25 | 2012-11-28 | 山东泽谊自控技术有限公司 | Quartz tube electromagnetic flow sensor |
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2012
- 2012-05-25 CN CN201210165652.1A patent/CN102661764B/en active Active
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Effective date of registration: 20200618 Address after: No. 7366, Qinglongshan Road, high tech Zone, Zibo City, Shandong Province Patentee after: SHANDONG DIZE INSTRUMENT TECHNOLOGY Co.,Ltd. Address before: 255086, C, block 135, No. 231, Zheng Tong Road, Zibo hi tech Zone, Shandong Patentee before: SHANDONG ZEYI AUTOMATIC CONTROL TECHNOLOGY Co.,Ltd. |