CN108982635B - Verification method and device for zirconia oxygen analyzer - Google Patents
Verification method and device for zirconia oxygen analyzer Download PDFInfo
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- CN108982635B CN108982635B CN201811200296.6A CN201811200296A CN108982635B CN 108982635 B CN108982635 B CN 108982635B CN 201811200296 A CN201811200296 A CN 201811200296A CN 108982635 B CN108982635 B CN 108982635B
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 title claims abstract description 204
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 137
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 137
- 239000001301 oxygen Substances 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012795 verification Methods 0.000 title description 10
- 238000005070 sampling Methods 0.000 claims abstract description 56
- 239000007789 gas Substances 0.000 claims abstract description 54
- 239000000523 sample Substances 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 21
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 20
- 239000003054 catalyst Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- 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
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/409—Oxygen concentration cells
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a zirconia oxygen analyzer, and particularly relates to a calibration method and a calibration device of the zirconia oxygen analyzer. The calibration method of the zirconia oxygen analyzer comprises the following steps: the zirconia oxygen sensor on the zirconia probe outputs detected oxygen data to the zirconia oxygen transmitter, the zirconia oxygen transmitter outputs calculated data to the oxygen comparison analyzer, the sampling tube and the sampling pump collect gas at the same position as the zirconia oxygen sensor, the collected gas is detected by the oxygen sensor, the oxygen sensor outputs a detection result to the oxygen comparison analyzer, and the oxygen comparison analyzer analyzes and compares the received detection data and displays the analysis result. The invention does not damage the measuring point environment, does not affect the production operation, has the same point, compares, detects and checks on the same interface with the zirconia oxygen analyzer at the same time, is suitable for being used in any environment, has accurate detection data and provides more accurate data for the operation of equipment.
Description
Technical Field
The invention relates to a zirconia oxygen analyzer, in particular to a calibration method and a calibration device of the zirconia oxygen analyzer, and belongs to the technical field of instruments and meters.
Background
The zirconia oxygen analyzer consists of zirconia transducer and zirconia probe, and is suitable for detecting oxygen content in boiler tail gas, etc. and is one simple and reliable measuring device. However, the existing zirconia oxygen analyzer can cause deviation of measured values due to the influence of factors such as quality, measuring environment and the like, and the detection result is inaccurate, so that a reliable method is needed to perform online verification on the zirconia oxygen analyzer, and the cause of the error is found out.
At present, the traditional zirconia oxygen analyzer is checked on line, and a standard gas calibration method is used. Under ideal conditions, these methods are verified, but under complex operating conditions, this method suffers from several drawbacks: 1. in the online work of the zirconia oxygen analyzer, the pressure at two sides of a zirconia electrode is uneven, particularly in the detection of flue gas of a combustion boiler, the detected environment is often negative pressure, and if a zirconia detection element is not sealed well, leakage exists; the gas of the reference electrode leaks to the measured electrode, and errors in measured values are caused. 2. In the traditional standard gas check method, the standard gas is introduced into the electrode to be tested by a guide pipe to see whether the oxygen amount display value is consistent with the known value of the standard gas. However, in the working environment, the measured electrode is usually negative pressure, and the pressure of standard gas is introduced to compensate the negative pressure of the measured environment, so that the pressures at two sides are balanced, the gas of the reference electrode cannot leak to the measured electrode, the checked value cannot have errors, and thus the standard gas is used for checking up, and the actual measured value has errors. 3. In the online work of the zirconia oxygen analyzer, the components of the detected gas are complex, and some components interfering with zirconia measurement exist, and in the tail gas of a combustion boiler, if the combustion is bad, combustible gases such as carbon monoxide, methane and the like which are not needed under normal working conditions exist; because the zirconia oxygen analyzer has the characteristic of heating the zirconia electrode to the minimum of 650 ℃, secondary combustion can be generated in the zirconia electrode measuring cavity, and residual oxygen is consumed, so that the measured value is low or even zero. In this case, the detection was impossible by the standard gas check method. 4. In addition, moisture in the gas and a large pressure difference between the reference electrode and the measured electrode affect the measurement of the zirconia oxygen analyzer. 5. The sampling check in other modes can not be performed, namely the environment of the measuring point is not damaged, the production operation is not influenced, the same point is at the same time, and the same interface of the measuring point and the zirconia oxygen analyzer is used for comparing, detecting and checking. In view of the problems that the standard gas verification method cannot detect, the zirconia oxygen analyzer verification device is developed, more accurate and reliable data are provided for equipment operation, and the technical problem which needs to be solved by the technicians in the field is solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a calibration method and a calibration device for a zirconia oxygen analyzer, which are used for comparing, detecting and calibrating the zirconia oxygen analyzer on the same interface at the same time without damaging the measuring point environment, affecting the production operation and the same point, are suitable for being used in any environment, have accurate detection data and provide more accurate data for the equipment operation.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a verification method of a zirconia oxygen analyzer comprises the following steps: the zirconia oxygen sensor of the zirconia probe outputs detected oxygen data to the zirconia oxygen transmitter, the zirconia oxygen transmitter outputs calculated data to the oxygen comparison analyzer, the sampling tube and the sampling pump collect gas at the same position as the zirconia oxygen sensor, the collected gas is detected by the oxygen sensor, the oxygen sensor outputs a detection result to the oxygen comparison analyzer, and the oxygen comparison analyzer analyzes and compares the received detection data and displays the analysis result.
The gas collected by the sampling pipe and the sampling pump is detected by a temperature sensor, a flowmeter, a gas sensor and a carbon monoxide sensor, and the detection results are output to an oxygen comparison analyzer for analysis and comparison and then displayed.
The verification device of the zirconia oxygen analyzer has the following structure: the front end sampling port of the sampling tube is positioned at the same point as the sampling port of the zirconia probe, the front end sampling port of the sampling tube is positioned outside the shell of the zirconia probe, the sampling tube is connected with the sampling pump, an oxygen sensor is arranged on the sampling tube, the signal output end of the oxygen sensor is connected with the signal input end of the oxygen comparison analyzer, the signal output end of the zirconia oxygen sensor on the zirconia probe is connected with the signal input end of the zirconia oxygen transducer, the signal output end of the zirconia oxygen transducer is connected with the signal input end of the oxygen comparison analyzer, and the signal input end of the zirconia oxygen transducer is connected with the signal output end of the zirconia oxygen sensor.
The sampling tube is also provided with a temperature sensor, a flowmeter, a gas sensor and a carbon monoxide sensor, and the signal output ends of the temperature sensor, the flowmeter, the gas sensor and the carbon monoxide sensor are connected with the signal input end of the oxygen comparison analyzer.
The sampling tube is connected with the radiator.
The oxygen comparison analyzer consists of a singlechip and a display.
The singlechip adopts an ATXMEGA32A4U singlechip, and the display adopts a 7-inch color touch screen.
The signal input end of the singlechip is connected with the signal output ends of the zirconia oxygen sensor, the temperature sensor, the flowmeter, the gas sensor, the oxygen sensor and the carbon monoxide sensor.
The temperature sensor adopts a PT100 temperature sensor; the gas sensor adopts a catalyst combustible gas sensor; the oxygen sensor adopts a fluorescent oxygen sensor; the carbon monoxide sensor adopts an electrochemical carbon monoxide sensor.
The sampling tube is inserted into the furnace body of the measured gas measuring area, and the sampling tube is connected with the furnace body in a sealing way.
By adopting the technical scheme, the invention has the following advantages and effects:
when the detection and the verification are carried out, the working condition environment of the detection point is not damaged; the production operation is not affected. The detection check point and the zirconia probe measuring point are the same point and are not influenced by the leakage of the zirconia probe, so that the detection is more representative. The instantaneous value of the zirconia oxygen analyzer can be compared and analyzed, and the influence of CO and combustible gas on oxygen measurement can be detected. Under the condition of no machine halt and disassembly, whether the zirconia probe leaks or not can be judged. And by combining standard gas verification and detecting and verifying by using a comparison method, accurate and reliable oxygen amount data can be provided for production operation. The measuring point is more convenient and quick to sample. The invention does not damage the measuring point environment, does not affect the production operation, has the same point, compares, detects and checks on the same interface with the zirconia oxygen analyzer at the same time, is suitable for being used in any environment, has accurate detection data and provides more accurate data for the operation of equipment.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1. zirconia oxygen sensor 2, zirconia probe, 3, sampling pipe, 4, sampling pump, 5, temperature sensor, 6, flowmeter, 7, gas sensor, 8, oxygen sensor, 9, carbon monoxide sensor, 10, radiator, 11, oxygen comparative analyzer, 12, zirconia oxygen amount transmitter, 13, measured gas measuring area, 14, furnace body, 15, display, 16, singlechip.
Detailed Description
The invention is further described below with reference to examples. The following embodiments are merely specific examples of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by using the concept shall belong to the behavior of infringement of the protection scope of the present invention.
The calibration method of the zirconia oxygen analyzer comprises the following steps: the zirconia oxygen sensor 1 of the zirconia probe 2 outputs detected oxygen amount data to the zirconia oxygen amount transmitter 12, the zirconia oxygen amount transmitter 12 outputs calculated data to the oxygen comparison analyzer 11, the sampling tube 3 and the sampling pump 4 collect gas at the same position as the zirconia oxygen sensor 1, the collected gas is detected by the oxygen sensor 8, the oxygen sensor 8 outputs a detection result to the oxygen comparison analyzer 11, and the oxygen comparison analyzer 11 analyzes and compares the received detection data and displays the analysis result.
The gas collected by the sampling pipe 3 and the sampling pump 4 is detected by the temperature sensor 5, the flowmeter 6, the gas sensor 7 and the carbon monoxide sensor 9, and the detection results are output to the oxygen comparison analyzer 11 for analysis and comparison and then displayed.
As shown in FIG. 1, the verification device of the zirconia oxygen analyzer has the following specific structure: the front end sampling port of the sampling tube 3 is at the same point as the sampling port of the zirconia probe 2, the front end sampling port of the sampling tube 3 is positioned outside the shell of the zirconia probe 2, the sampling tube 3 is connected with the sampling pump 4, the sampling tube 3 is provided with the oxygen sensor 8, the signal output end of the oxygen sensor 8 is connected with the signal input end of the oxygen comparison analyzer 11, the signal output end of the zirconia oxygen sensor 1 on the zirconia probe 2 is connected with the signal input end of the zirconia oxygen amount transmitter 12, the signal output end of the zirconia oxygen amount transmitter 12 is connected with the signal input end of the oxygen comparison analyzer 11, and the signal input end of the zirconia oxygen amount transmitter 12 is connected with the signal output end of the zirconia oxygen sensor 1.
The sampling tube 3 is also provided with a temperature sensor 5, a flowmeter 6, a gas sensor 7 and a carbon monoxide sensor 9, and the signal output ends of the temperature sensor 5, the flowmeter 6, the gas sensor 7 and the carbon monoxide sensor 9 are connected with the signal input end of an oxygen comparison analyzer 11.
The sampling tube 3 described above is also connected to a heat sink 10. The sampling tube 3 is inserted into the furnace body 14 of the measured gas measuring area 13, and the sampling tube 3 is connected with the furnace body 14 in a sealing way.
The oxygen comparison analyzer 11 is composed of a single chip 16 and a display 15. The signal input end of the singlechip 16 is connected with the signal output ends of the zirconia oxygen sensor 1, the temperature sensor 5, the flowmeter 6, the gas sensor 7 and the oxygen sensor 8 and the carbon monoxide sensor 9. The temperature sensor 5 adopts a PT100 temperature measuring sensor; the gas sensor 7 adopts a catalyst combustible gas sensor; the oxygen sensor 8 adopts a fluorescent oxygen sensor, and the measuring range is 0-25%; the carbon monoxide sensor 9 adopts an electrochemical carbon monoxide sensor, and the measuring range is 0-10000 PPm. The singlechip adopts an ATXMEGA32A4U singlechip, and the display adopts a 7-inch color touch screen.
The connection structure of the zirconia oxygen sensor 1, the zirconia probe 2 and the zirconia oxygen transmitter 12 is the prior art, adopts Chinese patent, the patent number is ZL 2016 2 1130613.8, and the invention name is an online sampling device of the zirconia oxygen analyzer.
The gas sampling point and the zirconia probe must be the same point and the same time, but the gas is sampled outside the zirconia probe shell to ensure that the sample gas is not affected by the leakage of the zirconia electrode. The sampling tube is strictly sealed with the furnace body, so that the leakage cannot occur to a little, and the measurement check value is not influenced.
The zirconia transmitter needs to have two paths of output values at the same time, one path is used for normal operation of equipment, and the other path is input into the oxygen comparison analyzer.
The working principle of the invention is as follows: on the premise of not influencing the normal measurement of the zirconia oxygen analyzer, the invention uses another oxygen sensor to measure the oxygen content of the current measuring point at the same measuring point, at the same time and in the same environment, and compares the measured value of the zirconia probe with the measured value of the other oxygen sensor under the same coordinate axis to check whether the measured value of the zirconia oxygen analyzer is correct or not.
Claims (5)
1. A calibration method of a zirconia oxygen analyzer is characterized in that a zirconia oxygen sensor (1) on a zirconia probe (2) outputs detected oxygen data to a zirconia oxygen transmitter (12), the zirconia oxygen transmitter (12) outputs calculated data to an oxygen comparison analyzer (11), a sampling tube (3) and a sampling pump (4) collect gas at the same position as the zirconia oxygen sensor (1), the collected gas is detected by an oxygen sensor (8), the oxygen sensor (8) outputs a detection result to the oxygen comparison analyzer (11), and the oxygen comparison analyzer (11) analyzes and compares the received detection data and displays the analysis result; the gas collected by the sampling pipe (3) and the sampling pump (4) is detected by a temperature sensor (5), a flowmeter (6), a gas sensor (7) and a carbon monoxide sensor (9), and detection results are output to an oxygen comparison analyzer (11) for analysis and comparison and then displayed; the front sampling port of the sampling tube (3) is positioned at the same point as the sampling port of the zirconia probe (2), the front sampling port of the sampling tube (3) is positioned outside the shell of the zirconia probe (2), the sampling tube (3) is connected with the sampling pump (4), the sampling tube (3) is provided with an oxygen sensor (8), the signal output end of the oxygen sensor (8) is connected with the signal input end of the oxygen comparison analyzer (11), the signal output end of the zirconia oxygen sensor (1) on the zirconia probe (2) is connected with the signal input end of the zirconia oxygen transducer (12), the signal output end of the zirconia oxygen transducer (12) is connected with the signal input end of the oxygen comparison analyzer (11), and the signal input end of the zirconia oxygen transducer (12) is connected with the signal output end of the zirconia oxygen sensor (1); the sampling tube (3) is also provided with a temperature sensor (5), a flowmeter (6), a gas sensor (7) and a carbon monoxide sensor (9), wherein the signal output ends of the temperature sensor (5), the flowmeter (6), the gas sensor (7) and the carbon monoxide sensor (9) are connected with the signal input end of the oxygen comparison analyzer (11), and the temperature sensor (5) adopts a PT100 temperature sensor; the gas sensor (7) adopts a catalyst combustible gas sensor; the oxygen sensor (8) adopts a fluorescent oxygen sensor; the carbon monoxide sensor (9) adopts an electrochemical carbon monoxide sensor; the sampling tube (3) is inserted into the furnace body (14) of the measured gas measuring area (13), and the sampling tube (3) is connected with the furnace body (14) in a sealing way.
2. The method for verifying a zirconia oxygen analyzer according to claim 1, wherein the sampling tube (3) is connected to a heat sink (10).
3. The method for verifying an oxygen analyzer for zirconia according to claim 1, wherein the oxygen comparison analyzer (11) is composed of a single chip microcomputer (16) and a display (15).
4. The method for calibrating a zirconia oxygen analyzer according to claim 3, wherein the single-chip microcomputer (16) is an ATXMEGA32A4U single-chip microcomputer, and the display (15) is a 7-inch color touch screen.
5. The calibration method of the zirconia oxygen analyzer according to claim 3, wherein the signal input end of the single chip microcomputer (16) is connected with the signal output ends of the zirconia oxygen sensor (1), the temperature sensor (5), the flowmeter (6), the gas sensor (7), the oxygen sensor (8) and the carbon monoxide sensor (9).
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| CN201811200296.6A CN108982635B (en) | 2018-10-16 | 2018-10-16 | Verification method and device for zirconia oxygen analyzer |
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| CN201811200296.6A CN108982635B (en) | 2018-10-16 | 2018-10-16 | Verification method and device for zirconia oxygen analyzer |
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| CN108982635B true CN108982635B (en) | 2024-02-13 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109655516B (en) * | 2018-12-31 | 2020-04-10 | 深圳硅基传感科技有限公司 | Electrochemical parameter testing platform |
| CN113740490A (en) * | 2021-08-26 | 2021-12-03 | 华能国际电力股份有限公司上海石洞口第一电厂 | Fault detection and verification device and method for flue gas oxygen meter |
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| JPH063318A (en) * | 1992-06-17 | 1994-01-11 | Yokogawa Electric Corp | Zirconia gas analyzer |
| CN2685875Y (en) * | 2003-07-17 | 2005-03-16 | 刘春宾 | Integral Zirconia smoke oxygen analyzer |
| CN204302222U (en) * | 2014-12-29 | 2015-04-29 | 深圳市荣鹰电子仪器有限公司 | Zirconium oxide analyzer |
| CN206095729U (en) * | 2016-10-18 | 2017-04-12 | 沈阳明盛仪表有限公司 | Online sampling device of zirconia oxygen component analysis appearance |
| CN209148593U (en) * | 2018-10-16 | 2019-07-23 | 沈阳明盛仪表有限公司 | The calibration equipment of Oxygen Measuring Instrument |
-
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- 2018-10-16 CN CN201811200296.6A patent/CN108982635B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063318A (en) * | 1992-06-17 | 1994-01-11 | Yokogawa Electric Corp | Zirconia gas analyzer |
| CN2685875Y (en) * | 2003-07-17 | 2005-03-16 | 刘春宾 | Integral Zirconia smoke oxygen analyzer |
| CN204302222U (en) * | 2014-12-29 | 2015-04-29 | 深圳市荣鹰电子仪器有限公司 | Zirconium oxide analyzer |
| CN206095729U (en) * | 2016-10-18 | 2017-04-12 | 沈阳明盛仪表有限公司 | Online sampling device of zirconia oxygen component analysis appearance |
| CN209148593U (en) * | 2018-10-16 | 2019-07-23 | 沈阳明盛仪表有限公司 | The calibration equipment of Oxygen Measuring Instrument |
Non-Patent Citations (1)
| Title |
|---|
| 基于工业以太网的氧化锆分析仪;孟凡群;程明霄;许晋宁;;仪表技术与传感器(第05期);全文 * |
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