CN105891414A - Sampling-pump-free smoke concentration measurement method and device based on grid arrangement method - Google Patents
Sampling-pump-free smoke concentration measurement method and device based on grid arrangement method Download PDFInfo
- Publication number
- CN105891414A CN105891414A CN201410839735.3A CN201410839735A CN105891414A CN 105891414 A CN105891414 A CN 105891414A CN 201410839735 A CN201410839735 A CN 201410839735A CN 105891414 A CN105891414 A CN 105891414A
- Authority
- CN
- China
- Prior art keywords
- sampling
- flue gas
- flue
- smoke
- pump
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000779 smoke Substances 0.000 title abstract description 12
- 238000000691 measurement method Methods 0.000 title abstract 3
- 238000005070 sampling Methods 0.000 claims abstract description 66
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 46
- 239000003546 flue gas Substances 0.000 claims description 46
- 238000004458 analytical method Methods 0.000 claims description 5
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 206010022000 influenza Diseases 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000004868 gas analysis Methods 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a sampling-pump-free smoke concentration measurement method and device based on a grid arrangement method and is applied to the technical field of measurement of tail smoke of large-scale coal-fired power plant boilers. Smoke is extracted from the section of an economizer outlet flue; multiple sets of sampling guns arranged through the grid arrangement method are used for sampling at the same time; each set of sampling guns includes multiple sampling pipes with different lengths, outlets of all sets of sampling guns are connected into a whole, and adjusting devices are arranged at the outlets to ensure that the smoke is mixed to be uniform after passing through the sampling guns; the smoke exhausted out of all sets of sampling guns is mixed and analyzed in a smoke analyzer and then returns into a flue of an air preheater outlet, and data collected by the smoke analyzer is embedded into a power plant distributed control system (DCS). Through the pressure drop of the flues, there is no need to arrange a sampling pump in the process, and therefore the system maintenance workload is reduced. The sampling-pump-free smoke concentration measurement method and device have the advantages that design is reasonable, use is convenient, the structure is simple, performance is stable, the system maintenance workload is small, and economical efficiency and practicability are achieved.
Description
Technical field
The present invention is for the tail flue gas measurement of concetration of large-scale coal-fired power station boiler, specifically a kind of based on grid arrangement
The method of flue gas concentration measuring without sampling pump of method and measurement apparatus.
Background technology
In the actual motion of large-sized station boiler, the flue gas concentration parameter in boiler back end ductwork is reflection boiler combustion shape
The quality of condition, and follow-up environment protection emission and fume treatment are played positive directive function.
Currently, for the boiler back end ductwork of Large-scale machine set, the measurement of flue gas in flue component content is by measuring point position
Put, flue gas disturbance, the impact of the factors such as concentration distribution, point layout is crossed major general and is caused flue gas sampling under-represented, surveys
Value produces relatively large deviation with the flue gas concentration in actual flue cross section.Meanwhile, the sampling section of most of flue gas concentrations needs
Coordinate sampling pump to use, add the cable configurations of smoke measurement system and the maintenance work of sampling pump.In a word, current cigarette
There is the shortcomings such as inequality, precision is low, maintenance is big of layouting in gas apparatus for measuring concentration, it is necessary to finds the most economic, practical and accurate
True measuring method and measurement apparatus measure flue gas concentration.
Summary of the invention
It is an object of the invention to provide a kind of reasonable in design, easy to use, simple in construction, stable performance, system maintenance work
Flue gas concentration measuring method in a kind of large-scale coal-fired power station boiler that work amount is little and economical and practical and measurement apparatus.
A kind of based on grid arrangement method the method for flue gas concentration measuring without sampling pump of the present invention and measurement apparatus, solve its skill
The scheme that art problem is used is: extract flue gas from economizer exit flue section, arranges that many group sampling guns are same according to gridding method
Time sampling, often group sampling gun comprises the sampling tube of multiple different length, and the outlet of each group sampling gun is connected as a single entity, and in exit
Arrange adjusting means, it is ensured that flue gas uniformly mixes after sampling gun, from each group of sampling gun flue gas out through being mixed into cigarette
Return to after edema caused by disorder of QI analyzer analysis in the flue of air preheater outlet, and the data collected by flue gas analyzer are embedded into power plant and divide
Dissipate in control system (DCS).
The flue gas aspirated in flue in the present invention, according to ASME (ASME) standard and country
The respective specified of standard (" station boiler performance test code " GB10184-88), arranges many groups according to gridding method in flue
Adjustable smoke sampling rifle, often group sampling gun uses the probe tube of different length to realize the multiple spot continuous sampling of flue gas, respectively organizes sampling gun
Outlet be connected as a single entity, and exit arrange adjusting means, to solve the representational problem of smoke sampling.
In the present invention, probe tube can improve at any time according to concrete flue sectional dimension and adjust, the mixing extracted in this way
The analysis measurement result of sample gas represents the average flue gas level on whole section.
The present invention rely on self pressure reduction in the flue of economizer exit and air preheater outlet dynamic as sampling of bleeding
Power, during need not arrange sampling pump.
The present invention can be that large-scale coal-fired power station boiler judges that combustion position provides the most accurate, stable flue gas concentration data to prop up
Hold, and follow-up environment protection emission and fume treatment are played positive directive function, greatly reduce because point position is unreasonable
And the data inaccuracy that spot measurement instrument fault causes.
The present invention is because saving the configuration of sampling pump of bleeding, it is possible to decrease install the initial stage cable configurations expense and because of sampling pump therefore
The maintenance cost that barrier causes, therefore this invention has preferable economy and practicality.
Accompanying drawing explanation
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is that the air suction sampling rifle of the present invention is arranged and flue gas sampling, analysis process figure.
Labelling in figure: 1, economizer exit flue cross section, 2, sampling gun, 3, sampling tube, 4, flue gas analyzer, 5,
Air preheater exhaust pass cross section, 6, adjusting means, 7, sampling spare interface, 8, compressed air blowback access port, 9,
Expansion joint, 10, bypass flue.
Detailed description of the invention
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of based on grid arrangement method the method for flue gas concentration measuring without sampling pump of the present invention and measurement dress
Putting, arrange many group sampling guns 2 in being included in economizer exit flue cross section 1, often group sampling gun 2 comprises multiple different length
Sampling tube 3, at the layout adjusting means 6 of exit cloth, the flue gas analyzer 4 analyzed for sample gas, returns after flue gas analysis
To air preheater exhaust pass cross section 5, it is considered to the expansion joint 9 of flue expanded by heating, spare interface 7 of sampling, when gas circuit is met stifled
Carrying out being passed through compressed air blowback by compressed air blowback access port 8, during blowback, flue gas walks around flue gas analysis from bypass flue 10
Instrument.
The solution of the present invention is: extract flue gas at economizer exit flue cross section 1, arranges according to gridding method and organizes sampling more
Rifle 2 is sampled simultaneously, and often group sampling gun 2 comprises the sampling tube 3 of multiple different length, and each group sampling gun 2 outlet is connected as a single entity,
And adjusting means 6 is arranged in exit, it is ensured that flue gas uniformly mixes after sampling gun 2, from each group of sampling gun 2 cigarette out
Gas returns in the flue 5 of air preheater outlet after being mixed into flue gas analyzer 4 and analyzing.
Expansion joint 9 is left in flue path.
Flue path arranges sampling spare interface 7, and this sampling spare interface uses flange to seal during not using.
Carry out being passed through compressed air blowback by compressed air blowback access port 8 when gas circuit of sampling is met stifled, flue gas during blowback
Flue gas analyzer is walked around from bypass flue 10.
Exposed sampling conduit outside flue carries out heat preservation construction process.
A kind of based on grid arrangement method the method for flue gas concentration measuring without sampling pump of the present invention and its processing system of measurement apparatus
Make simple, the use of large-scale coal-fired power station boiler has the strongest practicality and operability.
Claims (5)
1. the method for flue gas concentration measuring without sampling pump based on grid arrangement method and a measurement apparatus, for large-scale coal fired power plant pot
The tail flue gas of stove is measured, and it is characterized in that: extract flue gas from economizer exit flue section, arranges many groups according to gridding method and adopts
Sample rifle is sampled simultaneously, and often group sampling gun comprises the sampling tube of multiple different length, and each group sampling gun outlet is connected as a single entity, and is going out
Adjusting means is arranged, it is ensured that flue gas uniformly mixes after sampling gun, from each group of sampling gun flue gas out through being mixed at Kou
Return to after entering flue gas analyzer analysis in the flue of air preheater outlet, and the data collected by flue gas analyzer are embedded into electricity
In factory's scattered control system (DCS).
Flue gas concentration measuring method the most according to claim 1 and measurement apparatus, is characterized in that: in flue cross section, adopts
Sampling with many group sampling guns, often group sampling gun comprises the sampling tube of multiple different length, and its size can be big according to concrete flue simultaneously
Little it is adjusted.
Sampling gun the most according to claim 2, is characterized in that: the bleeding point position of each sampling tube is arranged by gridding method,
And adjusting means is arranged in exit, it is ensured that each sampling gun uniformly mixes.
Flue gas concentration measuring method the most according to claim 1 and measurement apparatus, is characterized in that: from economizer exit flue
Cross section extraction flue gas, returns to, in the flue of air preheater outlet, utilize the pressure drop of flue self after flue gas analyzer analysis,
During need not arrange sampling pump, deduction and exemption system maintenance workload.
Flue gas concentration measuring method the most according to claim 1 and measurement apparatus, is characterized in that: flue gas analyzer collects
Data be embedded in DCS of Power Plant (DCS).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839735.3A CN105891414A (en) | 2014-12-26 | 2014-12-26 | Sampling-pump-free smoke concentration measurement method and device based on grid arrangement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839735.3A CN105891414A (en) | 2014-12-26 | 2014-12-26 | Sampling-pump-free smoke concentration measurement method and device based on grid arrangement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105891414A true CN105891414A (en) | 2016-08-24 |
Family
ID=56701475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839735.3A Pending CN105891414A (en) | 2014-12-26 | 2014-12-26 | Sampling-pump-free smoke concentration measurement method and device based on grid arrangement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105891414A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964857A (en) * | 2015-07-10 | 2015-10-07 | 国家电网公司 | Power station boiler smoke sampling device |
| CN106548032A (en) * | 2016-11-08 | 2017-03-29 | 沃森测控技术（河北）有限公司 | Based on boiler flue grid detection flue gas CO and O2The distribution field method for reconstructing of concentration |
| CN110849698A (en) * | 2019-12-23 | 2020-02-28 | 福建省特种设备检验研究院 | Large-scale boiler afterbody flue gas composition analysis front system |
| CN111006915A (en) * | 2019-12-12 | 2020-04-14 | 江苏优尔孚机电技术有限公司 | Grid partition sampling structure of large-section flue |
| CN111551403A (en) * | 2020-05-21 | 2020-08-18 | 国网天津市电力公司电力科学研究院 | Continuous monitoring and sampling system for smoke emission |
| CN113406282A (en) * | 2021-06-18 | 2021-09-17 | 国网安徽省电力有限公司电力科学研究院 | Power station boiler tail flue oxygen field calibration method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203432825U (en) * | 2013-09-23 | 2014-02-12 | 国家电网公司 | Flow-equalized anti-blocking flue gas sampling gun |
| CN203772607U (en) * | 2014-04-15 | 2014-08-13 | 国家电网公司 | System for measuring content of oxygen in rear smoke channel of boiler |
| CN104075914A (en) * | 2014-07-01 | 2014-10-01 | 国家电网公司 | Novel smoke sampling method |
| CN204479546U (en) * | 2014-12-26 | 2015-07-15 | 浙江浙能技术研究院有限公司 | Based on grid arrange method without sampling pump flue gas concentration measuring system |
-
2014
- 2014-12-26 CN CN201410839735.3A patent/CN105891414A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203432825U (en) * | 2013-09-23 | 2014-02-12 | 国家电网公司 | Flow-equalized anti-blocking flue gas sampling gun |
| CN203772607U (en) * | 2014-04-15 | 2014-08-13 | 国家电网公司 | System for measuring content of oxygen in rear smoke channel of boiler |
| CN104075914A (en) * | 2014-07-01 | 2014-10-01 | 国家电网公司 | Novel smoke sampling method |
| CN204479546U (en) * | 2014-12-26 | 2015-07-15 | 浙江浙能技术研究院有限公司 | Based on grid arrange method without sampling pump flue gas concentration measuring system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964857A (en) * | 2015-07-10 | 2015-10-07 | 国家电网公司 | Power station boiler smoke sampling device |
| CN106548032A (en) * | 2016-11-08 | 2017-03-29 | 沃森测控技术（河北）有限公司 | Based on boiler flue grid detection flue gas CO and O2The distribution field method for reconstructing of concentration |
| CN106548032B (en) * | 2016-11-08 | 2019-04-05 | 沃森测控技术（河北）有限公司 | Based on boiler flue grid detection flue gas CO and O2The distribution field method for reconstructing of concentration |
| CN111006915A (en) * | 2019-12-12 | 2020-04-14 | 江苏优尔孚机电技术有限公司 | Grid partition sampling structure of large-section flue |
| CN110849698A (en) * | 2019-12-23 | 2020-02-28 | 福建省特种设备检验研究院 | Large-scale boiler afterbody flue gas composition analysis front system |
| CN110849698B (en) * | 2019-12-23 | 2024-04-05 | 福建省特种设备检验研究院 | System before analysis of large-scale boiler afterbody flue gas composition |
| CN111551403A (en) * | 2020-05-21 | 2020-08-18 | 国网天津市电力公司电力科学研究院 | Continuous monitoring and sampling system for smoke emission |
| CN113406282A (en) * | 2021-06-18 | 2021-09-17 | 国网安徽省电力有限公司电力科学研究院 | Power station boiler tail flue oxygen field calibration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204479546U (en) | Based on grid arrange method without sampling pump flue gas concentration measuring system | |
| CN105891414A (en) | Sampling-pump-free smoke concentration measurement method and device based on grid arrangement method | |
| CN108344604A (en) | A kind of SCR reative cells NOXThe online data-logger of concentration and control method | |
| CN102368065B (en) | Device for determining mercury content with different forms in coal-burning flue gas and its application | |
| CN105424882A (en) | SCR denitration system multi-branch smoke gas sampling device and method | |
| CN104819748A (en) | Continuous carbon discharging monitoring system for coal-fired power plant | |
| CN106770858B (en) | A kind of standard gas sample introduction regulating system for dioxin on-line checking | |
| CN205785968U (en) | A kind of Rear of Utility Boiler flue square-section flue gas measurement apparatus | |
| CN205067454U (en) | Element sulphur morphological analysis monitoring devices | |
| CN105334278A (en) | Gas inlet end trace gas controller for gas chromatograph | |
| CN211122442U (en) | Matrix type multi-point automatic inspection gaseous pollutant testing device | |
| CN102721599A (en) | Heating device for gas sampling | |
| CN111141560A (en) | Dual-channel NOx concentration real-time monitoring device based on grid method mixed sampling | |
| CN104075914A (en) | Novel smoke sampling method | |
| CN103353435A (en) | Air filter test board | |
| CN204461826U (en) | A kind of boiler smoke multi-directionally collecting sampler | |
| CN204679482U (en) | Flue gas on-Line Monitor Device | |
| CN205940635U (en) | Multipoint mode ammonia escape on -line monitoring system | |
| CN205175975U (en) | Gas chromatograph inlet end trace gas control ware | |
| CN210775377U (en) | Flue gas sampling analysis and calibration system | |
| CN204988816U (en) | Power plant boiler flue gas sampling device | |
| CN106053156B (en) | Flue gas sampling device and method | |
| CN108387434B (en) | Flue gas diluting device for civil stove performance test | |
| CN208155674U (en) | A kind of SCR reaction chamber NOXThe online data-logger of concentration | |
| CN201344869Y (en) | Sampling pretreatment device of HF on-line analyzer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: ZHEJIANG ENERGY R & D INSTITUTE Co.,Ltd. Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: ZHEJIANG ENERGY R & D INSTITUTE Co.,Ltd. Document name: Notification of Patent Invention Entering into Substantive Examination Stage |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |