CN1493856A - Measuring method of boiler flue gas temporature and measuring system - Google Patents
Measuring method of boiler flue gas temporature and measuring system Download PDFInfo
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- CN1493856A CN1493856A CNA031357970A CN03135797A CN1493856A CN 1493856 A CN1493856 A CN 1493856A CN A031357970 A CNA031357970 A CN A031357970A CN 03135797 A CN03135797 A CN 03135797A CN 1493856 A CN1493856 A CN 1493856A
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- flue
- boiler flue
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- boiler
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Abstract
A method and system for measuring the temp of fume in the flue of boiler features that one or more targets are installed onto the heat exchanging screen in the flue, one or more infrared thermodetectors are installed outside the flue, and quartz glass is installed on the flue wall between said target and infrared thermodetector. Its advantages are real-time measuring, high correctness and long service life.
Description
Technical field
The present invention relates to a kind of measuring method and measuring system of boiler flue flue-gas temperature, relate in particular to a kind of measuring method and measuring system of station boiler flue gas temperature.
Background technology
The existing boiler that puts into operation especially in the station boiler, never has effective means and measures high-temperature flue-gas and flue-gas temperature field.Though thermopair is placed in the boiler flue can measures flue-gas temperature, because thermopair mission life in high-temperature flue is extremely short, thus can not long-term work, practical significance is little." large coal powder boiler combustion apparatus performance design method " (compile general magnificent combustion technology development centre, Harbin, publishing house of Harbin Institute of Technology publishes, what black newly publishing picture (2001) No. 060) P376, P212 and the related Sections boiler flue section temperature having described to be in operation distributed is inhomogeneous, and to the harm of the normal operation of boiler.Therefore in boiler running process, to the flue gas temperature for a long time, monitoring stably is necessary.
Summary of the invention
The object of the present invention is to provide a kind of measuring method and the measuring system that can for a long time, accurately, stably monitor the boiler flue flue-gas temperature.
The present invention is achieved in that by the method for target being installed in boiler flue, infrared thermometer being installed outside boiler flue, has realized the measurement of boiler flue flue-gas temperature and not fragile.In measuring system of the present invention, one or several targets are housed in boiler flue, target shields by the heat interchange that carrier base is installed in the boiler flue.Outside boiler flue, be equipped with and target corresponding one or several infrared thermometers.On the boiler flue tube wall between target and the infrared thermometer, quartz glass is housed.Because target is wear-resisting, high temperature resistant and thermal conductivity is high, thermal inertia is little, so the life-span of target is long and in the short time temperature of target promptly consistent and change along with the variation of flue-gas temperature on every side with the temperature of flue gas around the target, simultaneously, the temperature of target informs infrared thermometer by the mode of infrared radiation, thereby measure the real time temperature of boiler flue flue gas, reach the temperature of high-temperature flue gas in the real-time monitoring boiler flue and obtain in the flue purpose of the distribution situation of flue-gas temperature field on the measured section.In addition, because the quartz glass light transmission on the boiler flue tube wall between target and the infrared thermometer is good, thermal insulation is good and high temperature resistant, so infrared thermometer can not be subjected to the high temperature injury and the temperature of measurement target drone more exactly.
Beneficial effect of the present invention is: use the present invention to measure the temperature of boiler flue flue gas; temperature and the variation and the long service life that can reflect the boiler flue flue gas accurately and real-time; thereby take appropriate measures according to continual monitoring result; make boiler can be for a long time, operation safely and steadly, avoided because of not adorning temperature measuring equipment or often change temperature measuring equipment the time that brought and loss economically.
Description of drawings
Fig. 1 is one of the present invention's synoptic diagram in boiler flue;
Fig. 2 is one of the present invention's synoptic diagram in boiler flue;
Fig. 3 is one of the present invention's sectional view in boiler flue;
Fig. 4 is two of the sectional view of the present invention in boiler flue.
Among the figure, 1 boiler flue, 2 heat interchange screen, 3 targets, 4 infrared thermometers, 5 quartz glasss.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in figures 1 and 3, by target 3 is installed in boiler flue 1, boiler flue 1 outside the method for installation infrared thermometer 4, realized the measurement of flue-gas temperature in the boiler flue 1 and not fragile.In Fig. 3 and Fig. 4, one or several targets 3 are housed in boiler flue 1, target 3 shields on 2 by the heat interchange that carrier base is installed in the boiler flue.Outside boiler flue 1, be equipped with and target 3 corresponding one or several infrared thermometers 4.On the tube wall of the boiler flue 1 between target 3 and the infrared thermometer 4, quartz glass 5 is housed.Because target 3 is wear-resisting, high temperature resistant and thermal conductivity is high, thermal inertia is little, so the life-span of target 3 is long and in the short time temperature of target 3 promptly consistent and change along with the variation of flue-gas temperature on every side with the temperature of flue gas around the target 3, simultaneously, the temperature of target 3 informs infrared thermometer 4 by the mode of infrared radiation, thereby measure the real time temperature of the flue gas in the boiler flue 1, reach the temperature of high-temperature flue gas in the real-time monitoring boiler flue 1 and obtain in the boiler flue 1 purpose of the distribution situation of flue-gas temperature field on the measured section.In addition, because the light transmission of the quartz glass 5 on the tube wall of the boiler flue 1 between target 3 and the infrared thermometer 4 is good, thermal insulation is good and high temperature resistant, so infrared thermometer 4 can not be subjected to the high temperature injury and the temperature of measurement target drone 3 more exactly.Like this, use the present invention to measure the temperature of boiler flue flue gas, can reflect temperature and the variation and the long service life of boiler flue flue gas accurately and real-time, thereby take appropriate measures according to continual monitoring result, make boiler can be for a long time, operation safely and steadly.
Focus on providing a kind of owing to of the present invention in boiler flue outside the boiler flue pipe by target being installed, method and a kind of system that comprises the measurement boiler flue flue-gas temperature of target, infrared thermometer and quartz glass that infrared thermometer is measured the boiler flue flue-gas temperature being installed, so, if only change the material and the mounting means thereof of target or change the mounting means of infrared thermometer outside the boiler flue pipe, all should be considered as infringement.
Claims (6)
1, a kind of measuring method of boiler flue flue-gas temperature, it is characterized in that: by in boiler flue, setting the method for target, outside boiler flue, target is carried out temperature survey, monitor the temperature of high-temperature flue gas in the boiler flue in real time and obtain in the flue distribution situation of flue-gas temperature field on the measured section;
2, the measuring method of boiler flue flue-gas temperature according to claim 1 is characterized in that: the thermal conductivity height of target, thermal inertia is little and wear-resisting, high temperature resistant;
3, the measuring method of boiler flue flue-gas temperature according to claim 1 is characterized in that: by the ultrared measurement of target radiation being determined the temperature of target;
4, the measuring system of the used boiler flue flue-gas temperature of the measuring method of the described boiler flue flue-gas temperature of a kind of claim 1, it is characterized in that: one or several targets are housed in boiler flue, one or several infrared thermometers corresponding to target are housed outside boiler flue, on the boiler flue tube wall between target and the infrared thermometer, quartz glass are housed;
5, the measuring system of boiler flue flue-gas temperature according to claim 4 is characterized in that: target shields by the heat interchange that carrier base is installed in the boiler flue;
6, the measuring system of boiler flue flue-gas temperature according to claim 4 is characterized in that: infrared thermometer is fixing by other outer device of boiler flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031357970A CN1493856A (en) | 2003-09-10 | 2003-09-10 | Measuring method of boiler flue gas temporature and measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031357970A CN1493856A (en) | 2003-09-10 | 2003-09-10 | Measuring method of boiler flue gas temporature and measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1493856A true CN1493856A (en) | 2004-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031357970A Pending CN1493856A (en) | 2003-09-10 | 2003-09-10 | Measuring method of boiler flue gas temporature and measuring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN1493856A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806626A (en) * | 2010-03-03 | 2010-08-18 | 四川东脑电气工程有限公司 | Online monitoring method for flue gas temperature of hearth outlet of power station boiler |
-
2003
- 2003-09-10 CN CNA031357970A patent/CN1493856A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806626A (en) * | 2010-03-03 | 2010-08-18 | 四川东脑电气工程有限公司 | Online monitoring method for flue gas temperature of hearth outlet of power station boiler |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |