CN205642931U - Big full -scale components of smoke measuring device of flue - Google Patents
Big full -scale components of smoke measuring device of flue Download PDFInfo
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- CN205642931U CN205642931U CN201620115762.0U CN201620115762U CN205642931U CN 205642931 U CN205642931 U CN 205642931U CN 201620115762 U CN201620115762 U CN 201620115762U CN 205642931 U CN205642931 U CN 205642931U
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- Prior art keywords
- flue
- section
- smoke components
- thief hole
- measurement apparatus
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- 239000000779 smoke Substances 0.000 title claims abstract description 72
- 238000005259 measurement Methods 0.000 claims abstract description 54
- 239000003546 flue gas Substances 0.000 claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims description 25
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 238000000034 method Methods 0.000 description 11
- 239000000523 sample Substances 0.000 description 10
- 239000003517 fume Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Abstract
The utility model provides a big full -scale components of smoke measuring device of flue for measure the interior components of smoke of a flue, include: an at least components of smoke collects measuring unit, at least, the part stretches into flue at least one inside sample pipeline, the sample pipeline include with components of smoke collects a main line of measuring unit intercommunication, evenly arrange in the cross section of flue with many branch pipelines of main line intercommunication, be in charge of for many and set up a plurality of thief holes of equipartition in aforementioned cross section on the road. Can realize components of smoke's precision measurement, the technology adjustment of handling for flue gas emission control and flue gas provides reliable foundation.
Description
Technical field
This utility model relates to smoke components field of measuring technique, is specifically related to a kind of large flue full-scale smoke components measurement apparatus.
Background technology
For the measurement of coal steam-electric plant smoke composition, mainly for the pollutant (SO in flue gas2、NOxDeng), oxygen amount, moisture and
The unreacted ammonia of denitration etc..The state that puts into operation of thermal power plant's environmental protection facility, need to be carried out according to the on-line measurement result of above-mentioned smoke components
Adjust in real time, in order to reach optimal discharge control level.Along with China is more and more tighter to the control of Air Pollutant Emission level
Lattice, the measurement of smoke components the most gradually comes into one's own.
At present, existing smoke components on-line measurement means there are disadvantages that, including: point layout only near flue side, and
Stretch into the sampling part within flue the shortest, it is impossible to measure flue center and the smoke components of offside, the most representative；Measuring point
Very little, the actual value in whole flue cross section is often replaced by the measurement result of one or two measuring point so that test data are with measuring point position
The smoke components at the place of putting fluctuates and fluctuates, and causes the inaccuracy of test result and the big ups and downs of test result.Therefore,
Along with power plant units scale is increasing, flue cross section is gradually increased, disadvantages mentioned above just becomes apparent from, existing smoke components
On-line measurement means cannot meet present stage for accurately measuring the requirement of flue gas in flue composition.
Utility model content
The deficiency existed for existing online smoke components measurement means, the purpose of this utility model is to provide a kind of full chi of large flue
Very little smoke components measurement apparatus, it is possible to realize the accurate measurement of smoke components, the technique for fume emission control and fume treatment is adjusted
Whole offer reliable basis.
For reaching above-mentioned purpose, this utility model takes techniques below scheme:
A kind of large flue full-scale smoke components measurement apparatus, in order to measure smoke components in a flue；Including:
At least one smoke components collects measuring unit；
It is extending at least partially at least one sampling line within described flue；
Described sampling line includes collecting, with described smoke components, the main line that measuring unit connects；It is evenly arranged in described flue
A cross section in many branch pipeline connecting with described main line；Offer in described many branch pipeline and be distributed in aforementioned cross-sectional
Interior multiple thief holes.
Further, the opening direction of described thief hole is consistent with flue gas flow direction in described flue.
Further, the plurality of thief hole array is uniform or annular is distributed in described cross section.
Further, the area of section of described flue is more than or equal to 0.3.
Further, described smoke components collects measuring unit in order to measure the content of pollutant in flue.
Further, described branch pipeline is uiform section pipe, and the proportionate relationship between the aperture area of each described thief hole meets: each
Flue gas flow rate in described thief hole is identical.
Further, described branch pipeline is ladder pipe, including many pipe joints that the quantity of the thief hole arranged in arbitrary branch pipeline is corresponding
Section, the proportionate relationship between the area of section of each pipe joint section meets: in described cross section, the flue gas flow rate in each thief hole is identical.
Further, described flue is rectangular duct, and described thief hole array is distributed in described cross section, and described cross section divides
For the rectangular area of the multiple homalographics corresponding with described thief hole quantity and position, the area of described rectangular area is 0.08-1.0
㎡。
Further, described flue is circular pipe, and described thief hole annular is distributed in described cross section, and described cross section divides
For annular or the sector region of the multiple homalographics corresponding with described thief hole quantity and position, described annular or the face of sector region
Amass as 0.1-1.57.
Further, described smoke components collection measuring unit is positioned at outside described flue.
By taking technique scheme, this utility model has the advantages that
(1) by using many branch pipeline to design, every branch pipeline is provided with multiple thief hole, can accomplish flue cross section
All standing, area covering degree relatively prior art increases substantially.
(2) thief hole of flue gas process, branch pipeline, main line, collects and flows into the smoke components collection measurement list arranged outside flue
Unit, the measurement result of smoke components is the average result of the flue gas that many thief holes obtain, the average result on the most whole flue cross section,
And above-mentioned average result is average, rather than mathematic(al) mean (mathematic(al) mean is it is believed that repeatedly measure a measuring point,
Last again by repetitive measurement results averaged；Or after using same measurement apparatus to measure multiple measuring point respectively, then will repeatedly survey
Amount results averaged.Owing in flue, flue gas flow rate is the most homogeneous, smoke distribution is also real-time change, the most likely
Can cause the measurement result inaccurate), effectively prevent smoke components fluctuation at spot sample hole and the measurement result fluctuation that causes, survey
Amount result the most accurately, more representative.
(3) whole device is convenient to process and mount, strong adaptability.In engineer applied, sampling can be adjusted flexibly according to practical situation
Hole, the layout quantity of probe tube, it is possible to use the method that subregion is arranged, strong adaptability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the large flue full-scale smoke components measurement apparatus in this utility model one embodiment.
Fig. 2 is the structural representation of the branch pipeline of the uiform section form of tubes in this utility model one embodiment.
Fig. 3 is the structural representation of the branch pipeline of the ladder tubular formula in another embodiment of this utility model.
Fig. 4 is the layout schematic diagram of the large flue full-scale smoke components measurement apparatus in this utility model one embodiment.
Fig. 5 is the structural representation of the large flue full-scale smoke components measurement apparatus in the another embodiment of this utility model.
Fig. 6 is the structural representation of the large flue full-scale smoke components measurement apparatus in the another embodiment of this utility model.
Detailed description of the invention
For making features described above of the present utility model and advantage to become apparent, special embodiment below, and coordinate institute's accompanying drawing to make in detail
Carefully it is described as follows.
As shown in Fig. 1 and Fig. 4, in one embodiment, it is provided that a kind of large flue full-scale smoke components measurement apparatus, in order to
Measure smoke components in a flue 1；Including: smoke components collects measuring unit 4；Part stretches into the probe tube within flue 1
Road 2；Sampling line 2 includes collecting, with smoke components, the main line that measuring unit 4 connects；It is evenly arranged in the one of flue 1
The many branch pipeline connected with main line in cross section；Many branch pipeline offer be distributed in aforementioned cross-sectional multiple take
Sample hole 3.Smoke components collection measuring unit 4 is in order to measure the content of various pollutant in flue gas, for currently known instrument, example
Such as fume component analysis instrument, in actual applications, its dimension can be chosen according to different flow.Its concrete structure and function are
Known by those skilled in the art, and extensively apply, at this at present smoke components being measured, in the Practical Project analyzed
Repeat no more.
Smoke components is collected measuring unit 4 and is arranged in outside flue 1, and thief hole 3 carrys out flow arrangement for flue gas dorsad, i.e. its openings
To consistent with flue gas flow direction in described flue 1.In sampling line 2, especially branch pipeline, can take according to actual needs to wait and cut
Facial canal or two kinds of forms of ladder pipe.Such as, as in figure 2 it is shown, in certain embodiments, branch pipeline 5 is uiform section pipe, its section
Face is rectangle, circle or the similar round of rule.When offering thief hole 3, it is ensured that the ratio between the aperture area of each thief hole 3
Example relation meets: the flue gas flow rate in each thief hole 3 is identical.The exhaust gas volumn that can make each thief hole of entrance 3 keeps consistent.
The most such as, as it is shown on figure 3, in another embodiment, branch pipeline 6 is ladder pipe, including arrange in arbitrary branch pipeline
The more piece pipeline section that the quantity of thief hole 3 is corresponding, the proportionate relationship between the area of section of each pipe joint section meets: in this branch pipeline
Flue gas flow rate in each thief hole 3 is identical, makes the exhaust gas volumn of each thief hole of entrance 3 keep consistent.
In previous embodiment, the thief hole 3 of a set of sampling line 2 and upper setting thereof can be by complete for flue 1 subregion.Actual application
In, the number of sampling line 2 is rationally arranged according to flue sectional area, and thief hole 3 is rationally arranged also according to flue sectional area.
Such as, it is added that in embodiment, when flue 1 length-width ratio is bigger, then sampling line is carried out subregion layout.Specifically abide by
Follow following rule: when length-width ratio is less than 1.5, the most only arrange that a set of smoke components collects measuring unit and sampling line；Such as Fig. 5
Shown in, when length-width ratio is 1.5 to 2.5, then the cross section of flue is divided into two subregions, arranges that two set smoke components are collected and survey
Amount unit 4 and sampling line 2, as long as in ensureing that thief hole 3 is the cross section being distributed on flue 1；If length and width
Ratio, more than 2.5, the most correspondingly arranges that three set smoke components collect measuring unit and sampling line.According to flue length-width ratio, select
Whether sampling line is carried out subregion layout, make measurement result have more representativeness, and can reflect that the same cross section of flue is different
The smoke components difference of subregion.
Device in use, the sampled hole of flue gas 3, sampling line 2, collect inflow smoke components and collect measuring unit 4 and carry out point
Analysis is measured.The measurement result of smoke components is the real-time average result of many thief holes, the average result on the most whole flue cross section,
The measurement result fluctuation that effectively prevent the fluctuation of smoke components at spot sample hole and cause, measurement result the most accurately, more generation
Table.
Following table is the sampling method using existing sampling method and this device measurement result to SCR reactor inlet nitrogen oxides,
As can be seen from the table, only the smoke components of special position point is measured due to existing sampling method, it is impossible to remove smoke
The undulatory property of composition, causes the instability of measurement result；The device in the embodiment shown in Fig. 1 is used to carry out smoke components measurement,
Due to the real-time average result that measurement result is many thief holes, the average result on the most whole flue cross section, evade single sampling
The dynamic impact on measurement result of some flue gas wavelet, measurement result is more stable, more accurate.
| The measurement time | NOx concentration mg/Nm3 |
| 10:05 | 398 |
| 10:10 | 356 |
| 10:15 | 420 |
| 10:20 | 370 |
Table 1 existing sampling method measurement result (measurement position: SCR reactor inlet)
| The measurement time | NOx concentration mg/Nm3 |
| 11:05 | 385 |
| 11:10 | 392 |
| 11:15 | 390 |
| 11:20 | 386 |
Measurement device result (measurement position: SCR reactor inlet) in embodiment shown in 2 Fig. 1 of table
As shown in Figure 6, in another embodiment, when measurement apparatus is arranged in circular flue, then thief hole 3 uses annular uniform
Arrangement, it is circular arc that sampling line 2 gos deep into the branch pipeline in flue, it is possible to effectively covers flue cross section, improves and measure
Accuracy.
In Practical Project, thief hole diameter and quantity, probe tube diameter and quantity, probe tube arrangement can be according to numerical simulation
Result, Logistics automatic system result and on-site actual situations are chosen.
The thief hole concrete layout specification in flue is as follows:
1) rectangle or square flue
Flue cross section is divided into an appropriate number of homalographic region, with the center in each region as measuring point.Thief hole is arranged at measuring point.
The quantity in homalographic region is chosen by table 3, and general measuring point is less than 20.
| Flue area of section m2 | Long edge lengths m in homalographic region | Measuring point sum |
| 0.5～1.0 | <0.50 | 4～6 |
| 1.0～4.0 | <0.67 | 6～9 |
| 4.0～9.0 | <0.75 | 9～16 |
| >9.0 | ≤1.0 | ≤20 |
The homalographic region specification of table 3 square (just) shape flue and measuring point number
2) circular flue
Flue cross section is divided into an appropriate number of homalographic concentric annular or sector region, each measuring point be selected in each homalographic centrage with
On the intersection point of perpendicular two crossing straight lines, wherein a diameter line should be in the plane of expection concentration change maximum.At measuring point
Place arranges thief hole or the projected position in corresponding sample hole.The homalographic number of rings of the circular flue of different-diameter, measure diameter number and
Measuring point number is shown in Table 4, and general measuring point is less than 20.
| Flue diameter m | Homalographic number of regions | Measure diameter number | Measuring point number |
| 0.3～0.6 | 1～2 | 1～2 | 2～8 |
| 0.6～1.0 | 2～3 | 1～2 | 4～12 |
| 1.0～2.0 | 3～4 | 1～2 | 6～16 |
| 2.0～4.0 | 4～5 | 1～2 | 8～20 |
| >4.0 | 5 | 1～2 | 10～20 |
Table 4 circular flue divides ring and measuring point number
As it was previously stated, uiform section branch pipeline or ladder pipe branch pipeline, branch pipeline cross section and thief hole can be selected according to sampling exhaust gas volumn
The relation of aperture area is specifically described with examples below:
1, branch pipeline uiform section, thief hole opening is different
Certain rectangular flue, length and width are 2m, are disposed with smoke components measurement apparatus (its concrete structure is with reference to foregoing embodiments),
Arranging branch pipeline, this branch pipeline quantity is 4, is evenly arranged, and branch pipeline is prismatic round tube, a diameter of 0.1m.Often
Root branch pipeline is provided with 4 thief holes, and thief hole is evenly arranged along branch pipeline pipe that (substantially thief hole is generally evenly distributed in sampling
Pipeline place cross section), thief hole aperture area.The thief hole that measuring unit is farthest is collected, to recently from distance smoke components
Thief hole, thief hole diameter is followed successively by 0.062m, 0.055m, 0.05m, 0.044m.It is arranged according to this parameter, can
Ensure that the flue gas flow entering each thief hole keeps consistent.
2, branch pipeline variable cross-section, thief hole opening is identical
Certain rectangular flue, length and width are 2m, are disposed with smoke components measurement apparatus (its concrete structure is with reference to foregoing embodiments),
Being provided with branch pipeline, the quantity of branch pipeline is 4, is evenly arranged, and every branch pipeline is provided with 4 thief holes, thief hole edge
Branch pipeline is evenly arranged (substantially thief hole is generally evenly distributed in sampling line place cross section), and each thief hole diameter is
0.05m.Branch pipeline is then uniformly divided into 4 sections by length direction, every section of diameter difference, collects measuring unit from distance smoke components
Remote pipeline section, to nearest pipeline section, diameter is followed successively by 0.115m, 0.11m, 0.105m, 0.1m.Cloth is carried out according to this parameter
Put, it is ensured that the flue gas flow entering each thief hole keeps consistent.
3, probe tube variable cross-section, thief hole opening is different
Certain rectangular flue, length and width are 2m, are disposed with smoke components measurement apparatus (its concrete structure is with reference to foregoing embodiments),
Being provided with branch pipeline, the quantity of branch pipeline is 4, is evenly arranged, and every branch pipeline is provided with 4 thief holes, and branch pipeline is pressed
Length direction is uniformly divided into 4 pipeline sections, every section of diameter difference.Every branch pipeline is provided with 4 thief holes, and thief hole is along being in charge of
Road is evenly arranged.Collect the farthest pipeline section of measuring unit from distance smoke components, to nearest pipeline section, diameter be followed successively by 0.11m,
0.106m、0.103m、0.1m.Collect, from distance smoke components, the thief hole that measuring unit is farthest, to nearest thief hole, take
Sample bore dia is followed successively by 0.055m, 0.052m, 0.05m, 0.047m.It is arranged according to this parameter, it is ensured that enter each
The flue gas flow of thief hole keeps consistent.
It should be noted that this utility model, for preferable case study on implementation of the present utility model, is not imposed any restrictions by the above,
Every any simple modification, change and equivalent structure change above example made according to this utility model technical spirit,
All still fall within the protection domain of technical solutions of the utility model.
Claims (10)
1. a large flue full-scale smoke components measurement apparatus, in order to measure smoke components in a flue；It is characterized in that, including:
At least one smoke components collects measuring unit；
It is extending at least partially at least one sampling line within described flue；
Described sampling line includes collecting, with described smoke components, the main line that measuring unit connects；The many branch pipeline connected with described main line in being evenly arranged in a cross section of described flue；Offer, in described many branch pipeline, the multiple thief holes being distributed in aforementioned cross-sectional.
2. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterised in that the opening direction of described thief hole is consistent with flue gas flow direction in described flue.
3. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterised in that the plurality of thief hole array is uniform or annular is distributed in described cross section.
4. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterised in that the area of section of described flue is more than or equal to 0.3.
5. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterised in that described smoke components collects measuring unit in order to measure the content of pollutant in flue.
6. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterised in that described branch pipeline is uiform section pipe, and the proportionate relationship between the aperture area of each described thief hole meets: the flue gas flow rate in each described thief hole is identical.
7. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterized in that, described branch pipeline is ladder pipe, including the more piece pipeline section that the quantity of the thief hole arranged in arbitrary branch pipeline is corresponding, the proportionate relationship between the area of section of each pipe joint section meets: in described cross section, the flue gas flow rate in each thief hole is identical.
8. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterized in that, described flue is rectangular duct, described thief hole array is distributed in described cross section, described cross section is divided into the rectangular area of the multiple homalographics corresponding with described thief hole quantity and position, and the area of described rectangular area is 0.08-1.0.
9. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterized in that, described flue is circular pipe, described thief hole annular is distributed in described cross section, described cross section is divided into annular or the sector region of the multiple homalographics corresponding with described thief hole quantity and position, and the area of described annular or sector region is 0.1-1.57.
10. large flue full-scale smoke components measurement apparatus as claimed in claim 1, it is characterised in that described smoke components is collected measuring unit and is positioned at outside described flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620115762.0U CN205642931U (en) | 2016-02-04 | 2016-02-04 | Big full -scale components of smoke measuring device of flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620115762.0U CN205642931U (en) | 2016-02-04 | 2016-02-04 | Big full -scale components of smoke measuring device of flue |
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| Publication Number | Publication Date |
|---|---|
| CN205642931U true CN205642931U (en) | 2016-10-12 |
Family
ID=57078123
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620115762.0U Expired - Fee Related CN205642931U (en) | 2016-02-04 | 2016-02-04 | Big full -scale components of smoke measuring device of flue |
Country Status (1)
| Country | Link |
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| CN (1) | CN205642931U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628455A (en) * | 2016-02-04 | 2016-06-01 | 大唐环境产业集团股份有限公司 | Full-size smoke component measuring device for large flue |
| CN109268691A (en) * | 2017-07-17 | 2019-01-25 | 宝武炭材料科技有限公司 | System for automatically prejudging leakage of volatile chemical medium pipeline |
-
2016
- 2016-02-04 CN CN201620115762.0U patent/CN205642931U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628455A (en) * | 2016-02-04 | 2016-06-01 | 大唐环境产业集团股份有限公司 | Full-size smoke component measuring device for large flue |
| CN109268691A (en) * | 2017-07-17 | 2019-01-25 | 宝武炭材料科技有限公司 | System for automatically prejudging leakage of volatile chemical medium pipeline |
| CN109268691B (en) * | 2017-07-17 | 2020-05-05 | 宝武炭材料科技有限公司 | System for automatically prejudging leakage of volatile chemical medium pipeline |
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