CN215985846U - Measuring device based on solid electrolyte oxygen sensor in-situ thermoelectric force - Google Patents
Measuring device based on solid electrolyte oxygen sensor in-situ thermoelectric force Download PDFInfo
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- CN215985846U CN215985846U CN202122102197.8U CN202122102197U CN215985846U CN 215985846 U CN215985846 U CN 215985846U CN 202122102197 U CN202122102197 U CN 202122102197U CN 215985846 U CN215985846 U CN 215985846U
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- Prior art keywords
- solid electrolyte
- reference electrode
- ceramic tube
- electrolyte ceramic
- oxygen sensor
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- 239000007784 solid electrolyte Substances 0.000 title claims abstract description 48
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 22
- 239000001301 oxygen Substances 0.000 title claims abstract description 22
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 35
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The utility model relates to a device for measuring in-situ thermoelectric force based on a solid electrolyte oxygen sensor, which comprises a solid electrolyte ceramic tube (1), wherein a cavity (1 a) is arranged in the solid electrolyte ceramic tube (1), an oxide reference electrode (2) is arranged in the cavity (1 a), one end of a reference electrode lead (3) upwards extends into the oxide reference electrode (2), and downwards penetrates out of the oxide reference electrode (2) after being bent in the oxide reference electrode (2), and a penetrating end (3 b) and a penetrating end (3 a) of the reference electrode lead (3) are positioned at the same end of the solid electrolyte ceramic tube (1); the lower end of the solid electrolyte ceramic tube (1) is provided with a cement sealing layer (4). The utility model has the advantages that the thermoelectric potential caused by temperature difference can be measured in real time, the signal compensation is carried out on the sensor, and the detection capability of the sensor in low-concentration oxygen measurement is improved.
Description
Technical Field
The utility model relates to the technical field of oxygen measurement sensors, in particular to a measurement device based on in-situ thermoelectric force of a solid electrolyte oxygen sensor.
Background
The zirconia solid electrolyte oxygen sensor is in the response in-process, because receive the influence of the inside and outside temperature difference of electrolyte ceramic pipe, there is a gradual increase in the first six seconds of sensor response, surpass the process of balanced response potential, this process is when surveing low concentration oxygen content, can produce great influence to the measured value, lead to the sensor can't satisfy the survey requirement even, however, current oxygen sensor can't be to measuring the thermoelectric force because this temperature difference arouses, can not carry out the compensation of signal to the sensor, the detection capability of sensor receives harmful effects.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the conventional oxygen sensor cannot measure thermoelectric force and signal compensation caused by temperature difference and the accuracy of the measured value is poor, and provides a measuring device based on the in-situ thermoelectric force of the solid electrolyte oxygen sensor, which can measure the thermoelectric force caused by the temperature difference in real time, compensate the signal of the sensor and improve the detection capability of the sensor in low-concentration oxygen measurement.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a measuring device based on in-situ thermoelectric force of a solid electrolyte oxygen sensor comprises a solid electrolyte ceramic tube, wherein a cavity is arranged in the solid electrolyte ceramic tube, an oxide reference electrode is arranged in the cavity, a reference electrode lead is arranged at the lower end of the solid electrolyte ceramic tube, one end of the reference electrode lead upwards extends into the oxide reference electrode, a bent part is arranged in the oxide reference electrode, the reference electrode lead downwards penetrates out of the oxide reference electrode after being bent, and the penetrating end of the reference electrode lead are positioned at the same end of the solid electrolyte ceramic tube;
the lower end of the solid electrolyte ceramic tube is provided with a cement sealing layer which is arranged right opposite to the cavity and is used for sealing the oxide reference electrode in the cavity.
Furthermore, the upper end of the solid electrolyte ceramic tube is provided with an arched section which protrudes outwards, the top of the arched section is connected with a cylindrical contact head, and the central line of the contact head and the axis of the solid electrolyte ceramic tube are superposed.
Further, the arch-shaped section is arranged at one end of the solid electrolyte ceramic tube close to the bent part of the reference electrode lead.
Further, the bent part of the reference electrode lead is close to the upper end of the solid electrolyte ceramic tube.
Further, the cavity is cylindrical, and a line thereof coincides with an axis of the solid electrolyte ceramic tube.
Compared with the prior art, the technical scheme of the utility model has the advantages that:
(1) bending the part of the electrode lead of the reference electrode in the reference electrode, so as to increase the length of the metal wire on the oxide reference electrode;
(2) leading out another section of the oxide reference electrode, namely a leading-out end of a reference electrode lead, wherein the leading-out end and the leading-in end form a metal resistance temperature sensor;
(3) by measuring the resistance change of the metal wire, the temperature of the reference electrode can be measured in situ in real time, and the thermoelectric force in the measuring process of the sensor can be determined in situ by combining the temperature of the molten steel;
(4) simple structure, the effect is showing, and the thermoelectric potential of real-time assay sensor in the testing process has then improved the ability of sensor at low concentration oxygen survey.
Drawings
Fig. 1 is a schematic structural diagram of a measuring device based on in-situ thermoelectric force of a solid electrolyte oxygen sensor according to the present invention.
Detailed Description
Example 1
In order that the present invention may be more clearly understood, the following description will be made in detail with reference to an in-situ thermoelectromotive force (bemf) measuring device of the present invention, and the specific examples described herein are intended to be illustrative only and are not intended to be limiting.
Referring to fig. 1, a device for measuring in-situ thermoelectric force based on a solid electrolyte oxygen sensor comprises a solid electrolyte ceramic tube 1, a cavity 1a is arranged in the solid electrolyte ceramic tube 1, and an oxide reference electrode 2 is arranged in the cavity 1a, and is characterized in that:
the lower end of the solid electrolyte ceramic tube 1 is provided with a reference electrode lead 3, one end of the reference electrode lead 3 extends upwards into the oxide reference electrode 2 and downwards penetrates out of the oxide reference electrode 2 after being bent in the oxide reference electrode 2, the penetrating end 3b and the penetrating end 3a of the reference electrode lead 3 are positioned at the same end of the solid electrolyte ceramic tube 1, and the bent part 3c of the reference electrode lead 3 is close to the upper end of the solid electrolyte ceramic tube 1;
the lower end of the solid electrolyte ceramic tube 1 is provided with a cement sealing layer 4, and the cement sealing layer 4 is arranged right opposite to the cavity 1a and used for sealing the oxide reference electrode 2 in the cavity 1 a;
the upper end of the solid electrolyte ceramic tube 1 is provided with an arched section 1b which protrudes outwards, the top of the arched section 1b is connected with a cylindrical contact head 1c, and the central line of the contact head 1c is coincident with the axis of the solid electrolyte ceramic tube 1.
In the present invention, the hollow 1a of the solid electrolyte ceramic tube 1 is cylindrical, and the center line thereof coincides with the axis of the solid electrolyte ceramic tube 1.
In the embodiment, the part of the reference electrode lead 3 of the oxide reference electrode 2 in the reference electrode is bent, the length of the metal wire on the oxide reference electrode is increased, then another section is led out, so that the penetrating end 3a and the penetrating end 3b form a metal resistance temperature sensor, the temperature of the reference electrode can be measured in situ in real time by measuring the resistance change of the metal wire, and the thermoelectric potential in the measuring process of the sensor can be determined in situ by combining the temperature of molten steel.
The measuring device has simple structure, can measure thermoelectric force caused by temperature difference in real time, compensates signals of the sensor and improves the detection capability of the sensor in low-concentration oxygen measurement.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a survey device based on solid electrolyte oxygen sensor normal position thermoelectric force, includes a solid electrolyte ceramic tube (1), is equipped with cavity (1 a) in solid electrolyte ceramic tube (1), is equipped with oxide reference electrode (2) in cavity (1 a), its characterized in that:
the lower end of the solid electrolyte ceramic tube (1) is provided with a reference electrode lead (3), one end of the reference electrode lead (3) upwards extends into the oxide reference electrode (2), a bent part (3 c) is arranged in the oxide reference electrode (2), the reference electrode lead (3) downwards penetrates out of the oxide reference electrode (2) after being bent, and the penetrating end (3 b) and the penetrating end (3 a) of the reference electrode lead (3) are positioned at the same end of the solid electrolyte ceramic tube (1);
the lower end of the solid electrolyte ceramic tube (1) is provided with a cement sealing layer (4), and the cement sealing layer (4) is arranged right opposite to the cavity (1 a).
2. The solid electrolyte oxygen sensor in-situ thermoelectromotive-based measuring device of claim 1, wherein:
the upper end of the solid electrolyte ceramic tube (1) is provided with an outwards convex arch section (1 b), the top of the arch section (1 b) is connected with a cylindrical contact head (1 c), and the central line of the contact head (1 c) and the axis of the solid electrolyte ceramic tube (1) are superposed.
3. The solid electrolyte oxygen sensor in-situ thermoelectromotive-based measuring device of claim 2, wherein:
the arched section (1 b) is arranged at one end of the solid electrolyte ceramic tube (1) close to the bending part (3 c) of the reference electrode lead (3).
4. The solid electrolyte oxygen sensor-based in-situ thermoelectromotive measurement device according to any one of claims 1 to 3, wherein:
the bent part (3 c) of the reference electrode lead (3) is close to the upper end of the solid electrolyte ceramic tube (1).
5. The solid electrolyte oxygen sensor-based in-situ thermoelectromotive measurement device according to any one of claims 1 to 3, wherein:
the cavity (1 a) is cylindrical and the central line thereof coincides with the axis of the solid electrolyte ceramic tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122102197.8U CN215985846U (en) | 2021-09-02 | 2021-09-02 | Measuring device based on solid electrolyte oxygen sensor in-situ thermoelectric force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122102197.8U CN215985846U (en) | 2021-09-02 | 2021-09-02 | Measuring device based on solid electrolyte oxygen sensor in-situ thermoelectric force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215985846U true CN215985846U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122102197.8U Expired - Fee Related CN215985846U (en) | 2021-09-02 | 2021-09-02 | Measuring device based on solid electrolyte oxygen sensor in-situ thermoelectric force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215985846U (en) |
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2021
- 2021-09-02 CN CN202122102197.8U patent/CN215985846U/en not_active Expired - Fee Related
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Granted publication date: 20220308 |