CN201926577U - Flue gas sampling device - Google Patents
Flue gas sampling device Download PDFInfo
- Publication number
- CN201926577U CN201926577U CN2010205460973U CN201020546097U CN201926577U CN 201926577 U CN201926577 U CN 201926577U CN 2010205460973 U CN2010205460973 U CN 2010205460973U CN 201020546097 U CN201020546097 U CN 201020546097U CN 201926577 U CN201926577 U CN 201926577U
- Authority
- CN
- China
- Prior art keywords
- sampling
- purge gas
- feeler lever
- gas
- flue gas
- 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 - Lifetime
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 75
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000003546 flue gas Substances 0.000 title claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 78
- 238000010926 purge Methods 0.000 claims description 56
- 238000001914 filtration Methods 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 abstract description 12
- 238000007664 blowing Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 10
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Abstract
The utility model provides a flue gas sampling device which comprises a sampling probe rod and a filtrating device communicated with the sampling probe rod. The flue gas sampling device further comprises a first gas back-blowing passage, wherein a first end of the first gas back-blowing passage is connected with a back-blowing gas generator, and a second end of the first gas back-blowing passage is connected with the sampling probe rod and introduces the back-blowing gas supplied by the back-blowing gas generator into the sampling probe rod.
Description
[technical field]
The utility model relates to a kind of sampling apparatus, especially is applied to the flue gas sampling device in the CEMS system.
[background technology]
Along with the develop rapidly of global process of industrialization, environmental pollution and ecological disruption are serious day by day, have caused the great attention of countries in the world.CEMS (Continuous Emission Monitoring System) is as a kind of watch-dog, can be continuously, in real time, the particulate pollutant in the on-line monitoring pollution source discharging flue gas, the concentration and the total emission volumn of gaseous contaminant, can realize monitoring the target of gross contamination emission.Based on the actual state of present state presence of pollution sources fume emission, country requires increasingly stringent to stationary pollution source Air Pollutant Emission and monitoring, and the application development of fume emission continuous monitoring will be trend of the times.
In the actual operation process of CEMS, the phenomenon that the sampling feeler lever is blocked often appears.So in the design of CEMS sampling feeler lever, for fear of being blocked, design has blowing function in the probe gas circuit.But in processing was blocked the phenomenon process, the function of the gas circuit blowback of sampling feeler lever often lost efficacy, and can not play due effect.
[utility model content]
Based on this, be necessary to provide the blowback effect preferably, be applied to the flue gas sampling device in the CEMS system.
A kind of flue gas sampling device, comprise sampling feeler lever, the filtration unit that communicates with the sampling feeler lever, also comprise the first blow-back path, the described first blow-back path, first end connects the purge gas generator, second end connects described sampling feeler lever, and the purge gas that the purge gas generator provides is oppositely imported described sampling feeler lever.
Further, described sampling feeler lever is connected by web member with described filtration unit.
Further, described web member is a flange.
Further, also comprise the second purge gas path, the described second purge gas path, first end connects the purge gas generator, and second end connects described filtration unit, and by described filtration unit purge gas is oppositely imported described sampling feeler lever.
Further, in the described first blow-back path valve is set, is used to control the flux of purge gas.
Further, described valve is the individual event valve, only allows purge gas to flow to described sampling feeler lever from the first blow-back path.
Further, the filter core of described filtration unit is a ceramic element.
Further, described sampling feeler lever is connected with flange by adapter, and adapter is embedded in the chimney body of wall.
Further, described adapter width is greater than the width of chimney body of wall
Compared to prior art, in the utility model flue gas sampling device this reduce purge gas and fall at the pressure in over-sampling path process, source of the gas is arranged on as far as possible the position of close sampling feeler lever, shorten the distance of purge gas, fall thereby reduce the pressure of purge gas in distance to sampling probe; Simultaneously, falling through the big pressure in the ceramic element for fear of purge gas, blowback bypass of design on sampling probe, when blowback, the direct by-passing of purge gas, thereby the problem of having avoided the pressure of purge gas the time to fall through filter core.The influence of gas sampling being filtered simultaneously for fear of the blowback bypass, one-way cock of design makes system when finishing sampling process in the blowback bypass, and gas can only pass through filter core.
[description of drawings]
The structural representation of Fig. 1 the utility model flue gas sampling device.
[embodiment]
Through to existing CEMS systematic analysis, find the blowback DeGrain of sampling feeler lever, mainly cause by following reason:
1, purge gas pressure is too little, can not form effective blowback to dust;
2, purge gas from the source of the gas to the sampling probe the circuit of process oversize, build-up of pressure falls too big, thereby limited to the blowback mediation effect of probe;
3, purge gas will pass through ceramic element before entering feeler lever, and filter core is a filtration that is full of filling material, so can make gas in the process of flowing through, the very big pressure of formation falls, thereby has reduced the blowback blocking-proof result of purge gas;
For reason given above, through improvement targetedly, the flue gas sampling device in the CEMS system of being applied to is as shown in Figure 1 proposed.
Flue gas sampling device 100 shown in Figure 1 comprises sampling feeler lever 10 and filtration unit 20.Described sampling feeler lever 10 is connected with described filtration unit 20 by a flange 30.
Described sampling feeler lever 10 is made for gapless stainless steel tube, and the tested cigarette of tested chimney, dirt, gas are used for sampling.
Described sampling feeler lever 10 has an adapter 11 with described flange 30 connections.Described adapter 11 is made for machining, and described sampling feeler lever 10 is connected with described flange 30 by described adapter 11.Described adapter 11 is embedded in the chimney body of wall 50, and the width of described adapter 11 is greater than the width of chimney body of wall 50, thereby makes little being exposed to outside the chimney body of wall 50 of described adapter 11 parts.
Described filtration unit 20 comprises shell 21 and filter core 22.Described shell is that 21 metal stainless-steel tubes are made, and its inner filter core 22 is a ceramic element, is used for the impurity of sampling by filtration cigarette, dirt, gas.
Described flue gas sampling device 100 further comprises one first blow-back path 31.First end of the described first blow-back path 31 connects a purge gas generator (figure does not show), second end links the shell 21 and described flange 30 joints of described filtration unit 20, the purge gas that is used for the purge gas generator is provided directly oppositely imports described sampling feeler lever 10, and without described filter core 22.It should be noted that, though second end of the described first blow-back path 31 is connected on described filtration unit 220 shells 21, but it can think directly to be connected described sampling feeler lever 10 and described flange 30 joining places, directly supplies purge gas to described sampling feeler lever 11.
Described flue gas sampling device 100 further comprises one second purge gas path 32, the described second purge gas path, 32 first ends connect the purge gas generator, second end connects described filtration unit 20, and by the filter core 22 of described filtration unit 20 purge gas is oppositely imported described sampling feeler lever 10.In addition, second end of the described second purge gas path 32 can also directly be connected in second end of the described first purge gas path 31, and obtains purge gas by second end of the described first purge gas path 31 from described purge gas generator.
Be appreciated that the described second purge gas path 32 can be understood as a main gas passage, and the described first purge gas path is owing to only by purge gas, can be understood as a bypass gas passage.
Simultaneously, increase air compressor machine at purge gas generator place,, improve the blocking-proof result of blowback to strengthen the pressure of purge gas.
Further,, in the described first blow-back path 31 valve 33 is set, is used to control the flux of purge gas in order better to control purge gas.And described valve 33 is the individual event valve, only allows purge gas to flow to described sampling feeler lever 10 from the described first blow-back path 31, avoids purge gas to flow backwards to the influence of described flue gas sampling device 100.And in the process of gas sampling, close described valve 33, make sample gas can only pass through described filter core 22.
Compared to prior art, fall at the pressure in over-sampling path process in order to reduce purge gas in the utility model flue gas sampling device, source of the gas is arranged on as far as possible the position of close sampling feeler lever, shorten the distance of purge gas, fall thereby reduce the pressure of purge gas in distance to sampling probe; Simultaneously, falling through the big pressure in the ceramic element for fear of purge gas, blowback bypass of design on sampling probe, when blowback, the direct by-passing of purge gas, thereby the problem of having avoided the pressure of purge gas the time to fall through filter core.The influence of gas sampling being filtered simultaneously for fear of the blowback bypass, one-way cock of design makes system when finishing sampling process in the blowback bypass, and gas can only pass through filter core.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (9)
1. flue gas sampling device, comprise sampling feeler lever, the filtration unit that communicates with the sampling feeler lever, it is characterized in that, also comprise the first blow-back path, the described first blow-back path, first termination is received purge gas, second end connects described sampling feeler lever, and the purge gas that the purge gas generator provides is oppositely imported described sampling feeler lever.
2. flue gas sampling device as claimed in claim 1 is characterized in that, described sampling feeler lever is connected by web member with described filtration unit.
3. flue gas sampling device as claimed in claim 2 is characterized in that, described web member is a flange.
4. flue gas sampling device as claimed in claim 1, it is characterized in that, also comprise the second purge gas path, the described second purge gas path, first end connects the purge gas generator, second end connects described filtration unit, and by described filtration unit purge gas is oppositely imported described sampling feeler lever.
5. flue gas sampling device as claimed in claim 1 is characterized in that, in the described first blow-back path valve is set, and is used to control the flux of purge gas.
6. flue gas sampling device as claimed in claim 1 is characterized in that, described valve is the individual event valve, only allows purge gas to flow to described sampling feeler lever from the first blow-back path.
7. flue gas sampling device as claimed in claim 1 is characterized in that, the filter core of described filtration unit is a ceramic element.
8. flue gas sampling device as claimed in claim 1 is characterized in that, described sampling feeler lever is connected with flange by adapter, and adapter is embedded in the chimney body of wall.
9. flue gas sampling device as claimed in claim 8 is characterized in that, described adapter width is greater than the width of chimney body of wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205460973U CN201926577U (en) | 2010-09-28 | 2010-09-28 | Flue gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205460973U CN201926577U (en) | 2010-09-28 | 2010-09-28 | Flue gas sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926577U true CN201926577U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205460973U Expired - Lifetime CN201926577U (en) | 2010-09-28 | 2010-09-28 | Flue gas sampling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196710A (en) * | 2013-03-13 | 2013-07-10 | 安徽皖仪科技股份有限公司 | Anti-blocking CEMS sampling system |
| CN103439161A (en) * | 2013-08-27 | 2013-12-11 | 中绿环保科技股份有限公司 | In-place laser gas analysis instrument |
-
2010
- 2010-09-28 CN CN2010205460973U patent/CN201926577U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196710A (en) * | 2013-03-13 | 2013-07-10 | 安徽皖仪科技股份有限公司 | Anti-blocking CEMS sampling system |
| CN103196710B (en) * | 2013-03-13 | 2015-05-13 | 安徽皖仪科技股份有限公司 | Anti-blocking CEMS sampling system |
| CN103439161A (en) * | 2013-08-27 | 2013-12-11 | 中绿环保科技股份有限公司 | In-place laser gas analysis instrument |
| CN103439161B (en) * | 2013-08-27 | 2016-08-10 | 中绿环保科技股份有限公司 | Formula laser gas analyzer in place |
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