DE7925016U1 - Meficell for determining the oxygen activity of melts - Google Patents
Meficell for determining the oxygen activity of meltsInfo
- Publication number
- DE7925016U1 DE7925016U1 DE7925016U DE7925016DU DE7925016U1 DE 7925016 U1 DE7925016 U1 DE 7925016U1 DE 7925016 U DE7925016 U DE 7925016U DE 7925016D U DE7925016D U DE 7925016DU DE 7925016 U1 DE7925016 U1 DE 7925016U1
- Authority
- DE
- Germany
- Prior art keywords
- tube
- probe
- bath electrode
- measuring cell
- melt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000155 melt Substances 0.000 title claims description 15
- 229910052760 oxygen Inorganic materials 0.000 title claims description 7
- 239000001301 oxygen Substances 0.000 title claims description 7
- 230000000694 effects Effects 0.000 title claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title claims description 5
- 239000000523 sample Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 239000011195 cermet Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 2
- GEIAQOFPUVMAGM-UHFFFAOYSA-N oxozirconium Chemical compound [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 claims 2
- 229910004140 HfO Inorganic materials 0.000 claims 1
- 229910015621 MoO Inorganic materials 0.000 claims 1
- 229910003301 NiO Inorganic materials 0.000 claims 1
- 229910010413 TiO 2 Inorganic materials 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 229910052735 hafnium Inorganic materials 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N nickel(II) oxide Inorganic materials [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims 1
- 239000007784 solid electrolyte Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- -1 platinum-rhodium-platinum Chemical compound 0.000 description 3
- QDOXWKRWXJOMAK-UHFFFAOYSA-N Chromium(III) oxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910000424 chromium(II) oxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/205—Metals in liquid state, e.g. molten metals
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Description
Meßzelle zur Ermittlung der Sauerstoffaktivxtät von Schmelzen.Measuring cell for determining the oxygen activity of melts.
Die Neuerung bezieht sich auf eine Meßzelle der dem Oberbegriff des Anspruchs 1 zugrundeliegenden Art.The innovation relates to a measuring cell on which the preamble of claim 1 is based Art.
Eine solche Meßzelle ist aus dem DE-GM 78 05 201 bekannt. Die Halterung besteht hierbei aus einer Flanschbüchse, die mit der Flanschseite der Schmelze zugewandt ist und in der das Thermoelementröhrchen und die Sonde eingekittet sind. Die Badelektrode ist in einem Ausschnitt am Rand des Flansches untergebracht und durch ein diesen umgebendes Spannband festgehalten. Der Aufwand zur Festlegung der Badelektrode ist hierbei erheblich.Such a measuring cell is from DE-GM 78 05 201 known. The bracket consists of a flange bushing that is connected to the flange side of the Melt is facing and in which the thermocouple tube and the probe are cemented. The bath electrode is housed in a cutout on the edge of the flange and by a tightening strap surrounding it held. The effort involved in fixing the bath electrode is considerable here.
Die Neuerung hat die Aufgabe, eine Meßzelle der dem Oberbegriff zugrundeliegenden Art so auszubilden, daß die Badelektrode auf einfache und sichere Weise festgelegt ist.The innovation has the task of designing a measuring cell of the type on which the generic term is based in such a way that that the bath electrode is fixed in a simple and safe manner.
Zur Lösung dieser Aufgabe dienen neuerungsgemäß die im Kennzeichen des Anspruchs 1 angegebenen Merkmale. According to the innovation, the features specified in the characterizing part of claim 1 serve to solve this problem.
Ein Röhrchen läßt sich aus den für die Badelektrode in Betracht kommenden Werkstoffen relativ gut herstellen. Wenn es auf den das Thermoelement enthaltenden bzw. die Sonde bildenden Röhrchen angeordnet ist, kann es auf einfache Weise mit diesen zusammen in die Halterung eingekittet werden. Die Befestigung der Anschlußdrähte ist einfach, insofern diese zwischen die Trägerröhrchen und das die Badelektrode bildende Röhrchen eingeklemmt werden könne.A tube can be made relatively well from the materials considered for the bath electrode produce. When placed on the tube containing or forming the thermocouple it can easily be cemented into the holder together with these. The attachment the connecting wires are simple insofar as they are between the carrier tube and the electrode forming the bath Tubes can be pinched.
Die Badelektrode besteht aus einem metallisch leitenden, gegen die Schmelze beständigen Material.The bath electrode consists of a metallically conductive material that is resistant to the melt.
In einer bevorzugten Ausführungsform kann die Badelektrode gemäß Anspruch 2 aus einem Cermet bestehen, wobei insbesondere das Material nach Anspruch 3 in Betracht kommt.In a preferred embodiment, the Bath electrode according to claim 2 consist of a cermet, in particular the material according to claim 3 comes into consideration.
Ansprüche 4 und 5 geben die verschiedenen Ausführungsformen der Neuerung wieder.Claims 4 and 5 reflect the various embodiments of the innovation.
In der Zeichnung ist ein Ausführungsbeispiel der Neuerung schematisch dargestellt. Die Figur zeigt einen Längsschnitt durch die als Flanschbüchse ausgebildete Halterung mit angedeuteten Meßinstrumenten.In the drawing, an embodiment of the innovation is shown schematically. The figure shows a longitudinal section through the bracket designed as a flange bushing with indicated measuring instruments.
In die Halterung 1, die aus keramischem feuerfestem Material besteht, sind eine Sonde 2, ein U-förmig gebogenes Si02-Rohr 3 mit einem Platinrhodium-Platin-Thermoelement 4 sowie eine Badelektrode 5 eingesetztf In the holder 1, which consists of ceramic refractory material, a probe 2, a U-shaped bent Si0 2 tube 3 with a platinum-rhodium-platinum thermocouple 4 and a bath electrode 5 are used f
die im Betrieb alle in die Schmelze eintauchen.all of which are immersed in the melt during operation.
Die Sonde 2 besteht aus einem am unteren Ende geschlossenen Röhrchen aus mit MgO, CaO oder Y2O3 stabilisiertem ZrO2, welches im Innern eine gewisse Menge einer Cr und Cr2Ü3 umfassenden Vergleichssubstanz enthält, die mit der Zuleitung 11 galvanisch verbunden ist. Das CrO2-Röhrchen der Sonde 2 ist bei den Temperaturder Schmelze sauerstoffionenleitend, so daß Sauerstoffionen aus der Schmelze durch das Material des Röhrchens I hindurch an die Vergleichssubstanz gelangen können.The probe 2 consists of a small tube, closed at the lower end, made of ZrO2 stabilized with MgO, CaO or Y2O3, which inside contains a certain amount of a reference substance comprising Cr and Cr2O3, which is galvanically connected to the supply line 11. The CrO 2 tube of probe 2 conducts oxygen ions at the temperature of the melt, so that oxygen ions from the melt can pass through the material of the tube I to the comparison substance.
I Es entsteht zwischen der Schmelze und der Vergleichs- I Between the melt and the comparative
3 ' substanz eine elektromotorische Kraft, die in dem3 'substance is an electromotive force present in the
'? Meßinstrument 9 gemessen wird, welches über die Zuleitung '? Measuring instrument 9 is measured, which via the supply line
I 11 einerseits mit der Vergleichssubstanz in der SondeI 11 on the one hand with the reference substance in the probe
Z 2 und über die Zuleitung 18 mit der Badelektrode 5 Z 2 and via the supply line 18 to the bath electrode 5
I verbunden ist. Die zugehörige Temperatur wird in demI connected i st. The associated temperature is in the
I Meßinstrument 10 gemessen, welches über die ZuleitungenI measuring instrument 10 measured, which via the leads
I 12,13 mit den beiden Schenkeln des in dem RöhrchenI 12,13 with the two legs of the in the tube
§ 3 befindlichen Thermoelements 4 verbunden ist. Aus Section 3 located thermocouple 4 is connected. the end
I der durch das Instrument 9 gemessenen EMK kann unterI the EMF measured by the instrument 9 can be below
I Zuhilfenahme der durch das Instrument 10 gemessenenI using the measured by the instrument 10
I Temperatur auf rechnerischem Wege die SauerstoffaktivitätI temperature calculatively the oxygen activity
I in der Schmelze bestimmt werden.I can be determined in the melt.
I Die Halterung 1 besteht aus einer FlanschbüchseI The bracket 1 consists of a flange bushing
I mit einer zylindrischen Büchse 14 und einem an einemI with a cylindrical sleeve 14 and one on one
I Ende derselben radial abstehenden Flansch 15. In derI end of the same radially protruding flange 15. In the
I Bohrung 16 der Büchse 14 sind mittels eines feuer-I bore 16 of the sleeve 14 are by means of a fire
I festen Kitts 17 die Sonde 2, das U-förmige RöhrchenI solid cement 17 the probe 2, the U-shaped tube
I 3 für das Thermoelement 4 sowie die Badelektrode 5I 3 for the thermocouple 4 and the bath electrode 5
r festgelegt. Diese Elemente ragen aus dem Flanschender set. These elements protrude from the flange end
I der Büchse 14 hervor, um in die Schmelze eingetauchtI of the sleeve 14 emerged to be immersed in the melt
I werden zu können.I will be able to.
• · W ·• W
Die Badelektrode 5 ist als Röhrchen aus einem Cermet ausgebildet, welches auf einem Schenkel des U-förmigen Röhrchens 3 für das Thermoelement 4 angeordnet ist. Der Anschlußdraht 18 ist zwischen diesen Schenkel und die Innenwandung der röhrchenförmigen Badelektrode 5 eingeklemmt.The bath electrode 5 is designed as a tube made of a cermet, which is on one leg of the U-shaped tube 3 for the thermocouple 4 is arranged. The connecting wire 18 is between clamped this leg and the inner wall of the tubular bath electrode 5.
Die Badelektrode kann auch auf der Sonde 2 angebracht werden, wie es bei 51 gestrichelt angedeutet ist.The bath electrode can also be attached to the probe 2, as indicated by dashed lines at 5 1.
Die Badelektrode 5 besteht aus einem metallkeramische Material wie M0/M0O2 o. dgl., welches durch einen hinreichend hohen Metallanteil eine gute Elektrodenleitfähigkeit besitzt.The bath electrode 5 consists of a metal-ceramic material such as M0 / M0O2 or the like a sufficiently high metal content a good electrode conductivity owns.
Im Betrieb wird die Halterung 1 mit dem Büchsenteil 14 in das vordere Ende eines nicht dargestellten Halterohrs eingesteckt. An diesem Halterohr werden dann die Sonde 2, das U-förmige Röhrchen 3 und die Badelektrode 5 in die Schmelze abgesenkt.In operation, the holder 1 with the sleeve part 14 is in the front end of a not shown Holding tube inserted. The probe 2, the U-shaped tube 3 and the bath electrode are then attached to this holding tube 5 lowered into the melt.
Claims (5)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE7925016U1 true DE7925016U1 (en) | 1980-02-21 |
Family
ID=1325458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE7925016U Expired DE7925016U1 (en) | Meficell for determining the oxygen activity of melts |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE7925016U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005060493B3 (en) * | 2005-12-15 | 2006-11-30 | Heraeus Electro-Nite International N.V. | Test probe, for taking measurements in metal melt, comprises refractory material that covers forward part of bath contact but not rearward part |
| DE102005060492B3 (en) * | 2005-12-15 | 2007-05-24 | Heraeus Electro-Nite International N.V. | Measuring probe for use in molten metals and slag has measuring head with sensors and signal leads guided through separate ducts to connect with separate contact members at end remote from immersion end |
-
0
- DE DE7925016U patent/DE7925016U1/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005060493B3 (en) * | 2005-12-15 | 2006-11-30 | Heraeus Electro-Nite International N.V. | Test probe, for taking measurements in metal melt, comprises refractory material that covers forward part of bath contact but not rearward part |
| DE102005060492B3 (en) * | 2005-12-15 | 2007-05-24 | Heraeus Electro-Nite International N.V. | Measuring probe for use in molten metals and slag has measuring head with sensors and signal leads guided through separate ducts to connect with separate contact members at end remote from immersion end |
| EP1798546A1 (en) | 2005-12-15 | 2007-06-20 | Heraeus Electro-Nite International N.V. | Measuring probe for measuring in metal or slag melts |
| US7418882B2 (en) | 2005-12-15 | 2008-09-02 | Heraeus Electro-Nite International N.V. | Measuring probe |
| US7832294B2 (en) | 2005-12-15 | 2010-11-16 | Heraeus Electro-Nite International, N.V. | Measuring probe for measurements in metal or slag melts |
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