CN201302548Y - Fly-ash component on-line detecting device based on laser induced plasma analytic technique - Google Patents
Fly-ash component on-line detecting device based on laser induced plasma analytic technique Download PDFInfo
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- CN201302548Y CN201302548Y CNU2008202259665U CN200820225966U CN201302548Y CN 201302548 Y CN201302548 Y CN 201302548Y CN U2008202259665 U CNU2008202259665 U CN U2008202259665U CN 200820225966 U CN200820225966 U CN 200820225966U CN 201302548 Y CN201302548 Y CN 201302548Y
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Abstract
The utility model belongs to the field of boiler fly-ash detecting devices, in particular to a fly-ash component on-line detecting device based on laser induced plasma analytic technique, which comprises a casing and is characterized in that a sample rotating disc connected with a motor is positioned in the casing, and a measuring control system which comprises a laser device, a spectrometer, an optical path system and a data processing and control unit is arranged above the sample rotating disc. The fly-ash component on-line detecting device resolves the defects that at present the influence caused by coal type on a fly-ash carbon content on-line detecting device is great and the equipment failure rate is high, and has the advantages as follows: 1) the measurement result is accurate and reliable, without being influenced by coal type; 2) the measurement speed is fast, the measurement result can be timely obtained and the stable measurement accuracy can be kept for long time; 3) the mechanical structure is simple with few moving parts, the movement is reliable and the life time is long.
Description
Technical field
The utility model belongs to boiler fly ash pick-up unit field, is specifically related to a kind of flyash ingredient on-line detection device based on the induced with laser plasma analysis technology.
Background technology
The content of contained uncompleted burned carbon element is an important indicator weighing boiler combustion efficiency in the flying dust of coal-fired power station boiler flue.Real-time online detects the carbon content of flying dust, and in time adjusts boiler operating parameter according to testing result, and unburned carbon in flue dust is controlled on the reasonable levels, and to improving the economy of unit operation, it is significant to reduce cost of electricity-generating.
The used measuring method of having used at present of flyash carbon content on-line testing apparatus mainly is microwave carbon determination method and quick calcination loss method.
Microwave carbon determination method is to utilize carbon in the flying dust that microwave energy is produced the principle of decay, measures carbon content in the flying dust by Microwave Measurement Technique.Apparatus structure in this way is simple, but is subjected to influence that coal changes greatly to the measuring accuracy of unburned carbon in flue dust, in case the coal of boiler combustion changes the measuring accuracy that just can not guarantee carbon content.And the coal of present domestic power plant changes greatly, so present user is difficult to adjust boiler operating parameter according to the measurement result of this instrument.
The calcination loss genealogy of law is improved by the weightless carbon determination method in laboratory fast.This method measuring accuracy height, the result is accurate, the influence that not changed by coal.But use the instrument complicated in mechanical structure of this method, the failure rate height.And actual field installation environment complexity more has influence on its reliable and stable work.
The utility model content
The purpose of this utility model is to solve present flyash carbon content on-line testing apparatus can't guarantee precision, the defective that equipment failure rate is high, and a kind of boiler fly ash ingredient on-line detection device that utilizes the induced with laser plasma analysis technology to measure unburned carbon in flue dust is provided.
The utility model is achieved through the following technical solutions:
It is a kind of flyash ingredient on-line detection device based on the induced with laser plasma analysis technology, comprise shell, it is characterized in that being provided with in the shell sample rotating disk, the sample rotating disk is connected with motor, the top of sample rotating disk is provided with Measurement and Control System, and described Measurement and Control System is made up of laser instrument, spectrometer, light path system, data processing and control module.
Also be provided with sampling system in the shell, described sampling system is by stopple coupon, separation vessel, the sample storage storehouse is formed, described sample storage position in storehouse is in the top of sample rotating disk, the bottom in sample storage storehouse is the sampling device that falls, the upper inlet in sample storage storehouse is connected with the bottom flying dust outlet of separation vessel, the outlet of stopple coupon is connected with the injection port on separation vessel top, stopple coupon is provided with the sampling solenoid valve, enclosure is provided with the negative pressure shape apparatus for converting, described negative pressure shape apparatus for converting is provided with compressed air hose and muffler, the exhanst gas outlet on separation vessel top is connected with the import of negative pressure shape apparatus for converting by the flue gas muffler, described compressed air hose is provided with compressed air electromagnetic valve, and the flue gas muffler is provided with the flue gas solenoid valve.
Also be provided with the sample send-back system in the shell, described sample send-back system comprises ash dropping hopper, counter sample pipe, dust flue, described ash dropping hopper is positioned at the below of sample rotating disk, the outlet at bottom of described ash dropping hopper is provided with dust flue, the top of sample rotating disk is provided with the counter sample pipe, the import of described dust flue, counter sample Guan Junyu negative pressure shape apparatus for converting connects, and described dust flue is provided with the dust discharge solenoid valve, and the counter sample pipe is provided with the counter sample solenoid valve.
Also be provided with inner casing in the described shell, Measurement and Control System is installed in the inner casing, and temperature conditioning unit is installed on the inner casing.
The upper surface of described sample rotating disk is provided with sample cell, and the upper edge of described sample cell is provided with scraper plate, and described scraper plate is fixedly mounted on the shell.
Described negative pressure shape apparatus for converting is air exhauster or vacuum pump or other any known negative pressure shape apparatus for converting.
Principle of the present utility model is to utilize the laser induced plasma spectral analysis technique directly to measure the content of carbon in the boiler fly ash, and can measure the content of other compositions in the boiler fly ash simultaneously.The induced with laser plasma analysis technology is a material Measurement and analysis technology that grows up earlier in recent years.Its principle is superlaser to be focused on the solid body surface excitation produce the High Temperature High Pressure plasma, and emission by measuring plasma or the material that absorption spectrum is measured plasma are formed the one-tenth of knowing illuminated solid body then by inference and be grouped into.The laser induced plasma spectral analysis has high detection sensitivity, can realize online detection, can realize qualitative, quantitative test fast.
The utlity model has following advantage:
1) be that measurement result is accurate, reliable, the influence that not changed by coal;
2) measuring speed is fast, can in time obtain testing result, and can keep stable measuring accuracy for a long time;
3) physical construction is simple, and moving component is few, reliable in action, long service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the vertical view of the utility model sample rotating disk.
As shown in FIG.: 1. shell, 2. inner casing, 3. data processing and control module, 4. temperature conditioning unit, 5. spectrometer, 6, light path system, 7. light path system, 8. laser instrument, 9. sample rotating disk, 10. motor, 11. ash dropping hoppers, 12. compressed air hoses, 13. compressed air electromagnetic valve, 14. extractor fans, 15. flues, 16. the dust discharge solenoid valve, 17. counter sample pipes, 18. sample cells, the sampling device 19. fall, 20. sample storage storehouses, 21. separation vessels, 22. the sampling solenoid valve, 23. flue gas solenoid valves, 24. counter sample solenoid valves, 25. stopple coupon, 26. mufflers, 27. flue gas mufflers, 28. dust flue, 29. scraper plates.
Embodiment
As shown in Figure 1 and Figure 2; be processed with one or more sample cells 18 as the container that holds sample at sample rotating disk 9; sample rotating disk 9 is driven and can be rotated around axis by motor 10; the upper edge of sample cell 18 is provided with scraper plate 29; scraper plate 29 is fixedly mounted on the shell 1; data processing and control module 3, spectrometer 5, light path system 6, light path system 7 and laser instrument 8 are formed Measurement and Control System, are contained in separately in the inner casing 2, provide dustproof, moistureproof and high low-temperature protection by inner casing 2 and temperature conditioning unit 4 to it.Data processing and control module 3 are responsible for the control of total system and are handled the spectroscopic data of spectrometer 5 outputs and export measurement result.Sampling system is positioned at the top of sample rotating disk 9, by stopple coupon 25, separation vessel 21, sample storage storehouse 20 is formed, described sample storage storehouse 20 is positioned at the top of sample sabot 9, the bottom in sample storage storehouse 20 is the sampling device 19 that falls, the upper inlet in sample storage storehouse 20 is connected with the bottom flying dust outlet of separation vessel 21, the outlet of stopple coupon 25 is connected with the injection port on separation vessel 21 tops, stopple coupon 25 is provided with sampling solenoid valve 22, shell 1 inside is provided with air exhauster 14, and pressurized air is introduced by compressed air hose 12 and formed the power source of negative pressure as sampling system and sample send-back system by air exhauster 14.The outlet of air exhauster 14 is provided with muffler 26, and stopple coupon 25 is the input pipe of ash-laden gas.Muffler 26 is air-channel system waste gas and the delivery pipe of measuring the back sample.Stopple coupon 25 and muffler 26 all insert flue 15 inside, the exhanst gas outlet on separation vessel 21 tops is connected with the import of air exhauster 14 by flue gas muffler 27, described compressed air hose 12 is provided with compressed air electromagnetic valve 13, and flue gas muffler 27 is provided with flue gas solenoid valve 23.The bottom of sample rotating disk 9 is provided with ash dropping hopper 11, the outlet at bottom of described ash dropping hopper 11 is provided with dust flue 28, the top of sample rotating disk 9 is provided with counter sample pipe 17, ash dropping hopper 11, dust flue 28, counter sample pipe 17 are formed the sample send-back system, described dust flue 28, counter sample pipe 17 all are connected with the import of air exhauster 14, described dust flue 28 is provided with dust discharge solenoid valve 16, and counter sample pipe 17 is provided with counter sample solenoid valve 24.
When the utility model uses, compressed air electromagnetic valve 13, sampling solenoid valve 22, flue gas solenoid valve 23 are opened during sampling, the flue gas that contains ash in the flue 15 enters separation vessel 21 by stopple coupon 25 through sampling solenoid valves 22, and finishes in separation vessel 21 separating of flue gas and flying dust.Flue gas after the separation enters in the air exhauster 14 through flue gas solenoid valve 23 by flue gas muffler 27, constantly is expelled back in the flue 15 by muffler 26 under compressed-air actuated promotion.Isolated flying dust is temporary in sample storage storehouse 20 as sample.Close Deng collecting compressed air electromagnetic valve 13 behind enough ash samples, sampling solenoid valve 22, flue gas solenoid valve 23, the sampling device 19 that falls is opened, ash sample is fallen in the sample cell 18 that is in the application of sample position, sample rotating disk 9 turns over an angle and forwards sample cell 18 to detection position then, at the process middle scraper 29 that changes unnecessary ash sample is wiped off, and the ash sample face is wipeed off.The High Power Laser Pulses that laser instrument 8 sends focuses on the surface of sample by light path system 7, makes the sample plasma that shines in the extremely short time.The light that plasma sends passes to spectrometer 5 through light path system 6, measure the luminescent spectrum of plasma by spectrometer 5, the spectroscopic data that measures is sent to analyze in the measure-controlling unit 3 and obtains in the tested flying dust content data of carbon and other composition and finish one-shot measurement, the ash sample that measurement finishes is transferred to the ash discharge position, at first open compressed air electromagnetic valve 13, counter sample solenoid valve 24 ash sample in the sample cell 18 under the draft effect that air exhauster 14 produces is sucked away, and then close counter sample solenoid valve 24 and open dust discharge solenoid valve 16 and will fall ash sample in the ash dropping hopper 11 and siphon away and finish ash discharge, sample cell 18 after the ash discharge can forward application of sample position application of sample again again to, enters next time to measure.Above-mentioned application of sample, measurement, each step of ash discharge also can replace simultaneously and carry out.
The utility model is not limited to above embodiment, can adopt vacuum pump to replace as air exhauster.
Claims (6)
1, a kind of flyash ingredient on-line detection device based on the induced with laser plasma analysis technology, comprise shell, it is characterized in that being provided with in the shell sample rotating disk, the sample rotating disk is connected with motor, the top of sample rotating disk is provided with Measurement and Control System, and described Measurement and Control System is made up of laser instrument, spectrometer, light path system, data processing and control module.
2, a kind of flyash ingredient on-line detection device according to claim 1 based on the induced with laser plasma analysis technology, it is characterized in that also being provided with in the shell sampling system, described sampling system is by stopple coupon, separation vessel, the sample storage storehouse is formed, described sample storage position in storehouse is in the top of sample rotating disk, the bottom in sample storage storehouse is the sampling device that falls, the upper inlet in sample storage storehouse is connected with the bottom flying dust outlet of separation vessel, the outlet of stopple coupon is connected with the injection port on separation vessel top, stopple coupon is provided with the sampling solenoid valve, enclosure is provided with the negative pressure shape apparatus for converting, described negative pressure shape apparatus for converting is provided with compressed air hose and muffler, the exhanst gas outlet on separation vessel top is connected with the import of negative pressure shape apparatus for converting by the flue gas muffler, described compressed air hose is provided with compressed air electromagnetic valve, and the flue gas muffler is provided with the flue gas solenoid valve.
3, a kind of flyash ingredient on-line detection device according to claim 1 based on the induced with laser plasma analysis technology, it is characterized in that also being provided with in the shell sample send-back system, described sample send-back system comprises ash dropping hopper, counter sample pipe, dust flue, described ash dropping hopper is positioned at the below of sample rotating disk, the outlet at bottom of described ash dropping hopper is provided with dust flue, the top of sample rotating disk is provided with the counter sample pipe, the import of described dust flue, counter sample Guan Junyu negative pressure shape apparatus for converting connects, described dust flue is provided with the dust discharge solenoid valve, and the counter sample pipe is provided with the counter sample solenoid valve.
4, a kind of flyash ingredient on-line detection device based on the induced with laser plasma analysis technology according to claim 1 is characterized in that also being provided with inner casing in the described shell, and Measurement and Control System is installed in the inner casing, and temperature conditioning unit is installed on the inner casing.
5, according to claim 1 or 2 or 3 described a kind of flyash ingredient on-line detection devices based on the induced with laser plasma analysis technology, the upper surface that it is characterized in that described sample rotating disk is provided with sample cell, the upper edge of described sample cell is provided with scraper plate, and described scraper plate is fixedly mounted on the shell.
6, according to claim 2 or 3 described a kind of flyash ingredient on-line detection devices, it is characterized in that described negative pressure shape apparatus for converting is air exhauster or vacuum pump based on the induced with laser plasma analysis technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202259665U CN201302548Y (en) | 2008-11-21 | 2008-11-21 | Fly-ash component on-line detecting device based on laser induced plasma analytic technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008202259665U CN201302548Y (en) | 2008-11-21 | 2008-11-21 | Fly-ash component on-line detecting device based on laser induced plasma analytic technique |
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| CN201302548Y true CN201302548Y (en) | 2009-09-02 |
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| CNU2008202259665U Expired - Lifetime CN201302548Y (en) | 2008-11-21 | 2008-11-21 | Fly-ash component on-line detecting device based on laser induced plasma analytic technique |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413892B (en) * | 2008-11-21 | 2010-10-27 | 山东惠工仪器有限公司 | Flyash ingredient on-line detection device based on laser induce plasma analysis technology |
| CN102661935A (en) * | 2012-05-15 | 2012-09-12 | 广东电网公司电力科学研究院 | LIBS (Laser-induced Breakdown Spectroscopy) belt type powdery material detector |
| CN103822880A (en) * | 2014-02-26 | 2014-05-28 | 清华大学 | Method and system for measuring fly ash carbon content |
| CN108072825A (en) * | 2016-11-18 | 2018-05-25 | 富士施乐株式会社 | Check device |
-
2008
- 2008-11-21 CN CNU2008202259665U patent/CN201302548Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413892B (en) * | 2008-11-21 | 2010-10-27 | 山东惠工仪器有限公司 | Flyash ingredient on-line detection device based on laser induce plasma analysis technology |
| CN102661935A (en) * | 2012-05-15 | 2012-09-12 | 广东电网公司电力科学研究院 | LIBS (Laser-induced Breakdown Spectroscopy) belt type powdery material detector |
| CN103822880A (en) * | 2014-02-26 | 2014-05-28 | 清华大学 | Method and system for measuring fly ash carbon content |
| CN103822880B (en) * | 2014-02-26 | 2016-06-29 | 清华大学 | Flying marking measuring method and system |
| CN108072825A (en) * | 2016-11-18 | 2018-05-25 | 富士施乐株式会社 | Check device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090902 Effective date of abandoning: 20081121 |