CN102661764A - Quartz tube electromagnetic flow sensor - Google Patents
Quartz tube electromagnetic flow sensor Download PDFInfo
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- CN102661764A CN102661764A CN2012101656521A CN201210165652A CN102661764A CN 102661764 A CN102661764 A CN 102661764A CN 2012101656521 A CN2012101656521 A CN 2012101656521A CN 201210165652 A CN201210165652 A CN 201210165652A CN 102661764 A CN102661764 A CN 102661764A
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- quartz ampoule
- quartz tube
- quartz
- electromagnetic flow
- permanent magnet
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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 is a kind of quartz ampoule electromagnetic flow transducer.
Background technology
At present, electromagnetic flowmeter is the most successful the most a kind of flow measurement mode that active procedure control and flow metering aspect are used.The electromagnetic flow-measurement device all is based on Faraday's electromagnetic induction law, comes the volumetric flow rate of conducting medium in the measuring tube.The technology of the electromagnetic flowmeter of full packages formula is through nearly 50 years development, and is very ripe.Current each country and domestic technology aspect sensor, are all taked at metal section, and the form of multiple linings such as liner rubber lining, tetrafluoro lining, PFA lining all need be used electrode probe, passes instrument housing and lining, directly contacts with medium.When measuring high corrosion type medium such as high-temperature high concentration hydrochloric acid, hydrofluorite, oleum, nitric acid; The material of potential electrode all needs special requirement, such as using the tantalum metal to do electrode, uses platinum to do electrode; These noble metals cost an arm and a leg, complex process; When needs are measured mud, mortar, slip, red mud etc. and are carried the medium of a large amount of solid particles, the wearing and tearing of liner, the shortening that the wearing and tearing of electrode are all serious the serviceable life of electromagnetic flowmeter.Change under the more violent process environments in process conditions; The installation of lining liner, electrode material also has special rules; Prevent to expand with heat and contract with cold, inner metal tension, the special process such as gathering sealing that expand wanted are with the minimizing electrode and the lining joint portion leaks, the problem of decreasing insulating.Need the place of high-temperature sterilization, electromagnetic flowmeter need bear the problem of the above steam of 150 degree at field of medicaments, all instrument has been proposed acid test.Have a greatly reduced quality the serviceable life of instrument.
Publication number is the CN2072215U Chinese patent, discloses the ceramic pipe composite structure with sheath and the electromagnetic flowmeter of integral sintering electrode structure, on design theory, has realized breakthrough; But on the technology that realizes; Ceramic lined fragility is high, and there is serious interface debonding in the joint portion of conductivity ceramics and insulating ceramics, and sintering temperature is up to more than 1000 degree; What field coil used is enameled wire, can not bear so high temperature.Market demand a kind of practicable, the technological problems, the universal anticorrosion electromagnetic flowmeter production problem, that cost can be controlled that solve.
Summary of the invention
The technical matters that the present invention will solve solves the high temperature sintering that can't overcome at present of traditional ceramics electromagnetic flowmeter, the problem that pottery is frangible, the sintered shell yield rate is low exactly, and has 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 the extraction electrode line that passes permanent magnet; It is characterized in that permanent magnet is arranged on the quartz ampoule, the outside surface of quartz ampoule is covered with flexible liners; On quartz ampoule, also be provided with the conductivity ceramics electrode and be connected with the extraction electrode line, described quartz ampoule two ends are clamped in the quartz sheath.
The material of said ceramic electrode is the 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.Replace the platinum electrode in the electromagnetic flowmeter with this material; Normal temperature conducts electricity very well. can save a large amount of platinum. and reducing cost reaches 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 the 1.0 Ω .cm, and preparation technology is simple, stable, practical.
Said 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 a conductive layer, and its material is by weight percentage: quartzy 80-85%, four antimony chloride 15-20%.Said conductive layer is preferred not exclusively to cover non-conductive layer, preferably at the quartz ampoule two ends and the electrode contact place cover.
The installation of quartz ampoule is adopted is that the mode of two sections clampings is installed, and the part that this just need be connected with pipeline has ductility preferably, and its soft class lining part on every side is not afraid of broken.
Among the present invention, the installation of high orientation magnetic conductor, the installation of field coil, assembled formation, 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, advantage such as high temperature resistant, and solved ceramic frangible, problem such as the sintered shell yield rate is low.
Description of drawings
For example the present invention is further specified with implementing in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a quartz ampoule section structure synoptic diagram of the present invention.
Among the figure, 1-extraction electrode line, 2-permanent magnet, 3-quartz ampoule, 4-quartz sheath, 5-conductivity ceramics electrode, 6-flexible liners; 3-1 is a 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 the extraction electrode line 1 that passes permanent magnet 2, permanent magnet 2 is arranged on the quartz ampoule 3, and the outside surface of quartz ampoule 3 is covered with flexible liners 6; On quartz ampoule 3, also be provided with conductivity ceramics electrode 5 and be connected with extraction electrode line 1, described quartz ampoule 3 two ends are clamped in the quartz sheath 4.
As shown in Figure 2, said 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 said ceramic electrode 5 is the 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 (3)
1. quartz ampoule electromagnetic flow transducer; Comprise permanent magnet and the extraction electrode line that passes permanent magnet; It is characterized in that permanent magnet is arranged on the quartz ampoule, the outside surface of quartz ampoule is covered with flexible liners; On quartz ampoule, also be provided with the conductivity ceramics electrode and be connected with the extraction electrode line, described quartz ampoule two ends are clamped in the quartz sheath.
2. quartz ampoule electromagnetic flow transducer according to claim 1 is characterized in that, the material of said ceramic electrode is the 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.
3. quartz ampoule electromagnetic flow transducer according to claim 1 is characterized in that said 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 a conductive layer, and its material is by weight percentage: quartzy 80-85%, four antimony chloride 15-20%.
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|---|---|---|---|
| CN201210165652.1A CN102661764B (en) | 2012-05-25 | 2012-05-25 | Quartz tube electromagnetic flow sensor |
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| CN201210165652.1A CN102661764B (en) | 2012-05-25 | 2012-05-25 | Quartz tube electromagnetic flow sensor |
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| CN102661764A true CN102661764A (en) | 2012-09-12 |
| CN102661764B CN102661764B (en) | 2014-02-12 |
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Citations (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 |
| 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 |
| 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 |
| CN101432599A (en) * | 2006-04-20 | 2009-05-13 | 恩德斯+豪斯流量技术股份有限公司 | Magnetic-inductive device for measuring the volume flow rate or mass flow rate of a medium |
| CN101592506A (en) * | 2008-05-28 | 2009-12-02 | 株式会社东芝 | Electromagnetic flowmeter |
| CN101636640A (en) * | 2006-05-19 | 2010-01-27 | 恩德斯+豪斯流量技术股份有限公司 | Magnetic-inductive flow meter |
| 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 |
| 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 |
| CN102297711A (en) * | 2010-06-28 | 2011-12-28 | 株式会社东芝 | 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 |
-
2012
- 2012-05-25 CN CN201210165652.1A patent/CN102661764B/en active Active
Patent Citations (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 |
| CN101432599A (en) * | 2006-04-20 | 2009-05-13 | 恩德斯+豪斯流量技术股份有限公司 | Magnetic-inductive device for measuring the volume flow rate or mass flow rate of a medium |
| CN101636640A (en) * | 2006-05-19 | 2010-01-27 | 恩德斯+豪斯流量技术股份有限公司 | Magnetic-inductive flow meter |
| 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 |
| CN101592506A (en) * | 2008-05-28 | 2009-12-02 | 株式会社东芝 | 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 |
| CN102297711A (en) * | 2010-06-28 | 2011-12-28 | 株式会社东芝 | 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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| CN102661764B (en) | 2014-02-12 |
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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. |