CN2535778Y - Measuring calibration device for tail smoke discharge path of coal-burning boiler - Google Patents
Measuring calibration device for tail smoke discharge path of coal-burning boiler Download PDFInfo
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- CN2535778Y CN2535778Y CN 01274372 CN01274372U CN2535778Y CN 2535778 Y CN2535778 Y CN 2535778Y CN 01274372 CN01274372 CN 01274372 CN 01274372 U CN01274372 U CN 01274372U CN 2535778 Y CN2535778 Y CN 2535778Y
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- pipeline section
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- burning boiler
- flue
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Abstract
The utility model relates to a contaminant measuring and calibrating apparatus for a tail-end draught flue of a coal-burning boiler, which comprises a horizontal or a vertical flow equalizing pipeline section. An air inlet of the flow equalizing pipeline section is connected with the rear-end draught flue of the coal-burning boiler via a multi-layer deflector with a radius of R, and an air outlet of the flow equalizing pipeline section is connected with a chimney. A blocking-guiding mixed current equalizer, plural wings-type velocity measuring and current stabilizing devices, and a measuring-calibrating-sampling device are sequentially installed in the flow equalizing pipeline section along the flue gas flowing direction. The utility model has simple structure and small occupied space, and can provide diphase gas flow uniformity for satisfying measuring requirement by the simple and short flow equalizing pipeline section arranged on the rear-end draught flue of the coal-burning boiler, thereby realizing true representativeness and accuracy of sample data. According to experiments, the measuring and calibrating apparatus of the rear-end draught flue of the coal-burning boiler of the utility model can measure flue gas discharging volume with an error less than 10%, and can achieve the U.S Root-Mean-Square standard speed deviation ratio sigma <r> with a value less than 0.25.
Description
Technical field
The utility model relates to the measurement caliberating device of coal-burning boiler tail flue gas discharging flue pollutant.
Background technology
In order to improve the environmental quality of atmosphere effectively, improve people's living environment, State Bureau of Environmental Protection is progressively implemented overall control and discharge permit system to the discharging of atmosphere pollution, to strengthen the supervision and management to the air environmental pollution situation.For this reason, must scientifically, strictly implement continuous monitoring, objectively the kind of pollutant, concentration, quantity etc. at length be measured.
For coal-burning boiler, advanced fume continuous monitoring system (english abbreviation CEMS has been arranged, substitute traditional manual measurement method down together), flue gas on the boiler tail discharging flue is carried out METHOD FOR CONTINUOUS DETERMINATION, it can not only instantaneously obtain the information and the dynamic data of disposal of pollutants, and can correctly measure pollutant emission concentration and total amount.But present coal-burning boiler, especially the large medium-size boiler tail flue gas discharges flue, there are not enough spaces to make the two-phase fluidised form reach the satisfied homogeneity of measuring and the two-phase flow flow value of coincidence measurement accuracy requirement, thereby can not give security to CEMS and measure and nominal data has true representational sampled point and method data qualitatively, thus, also hindered the foundation of atmosphere environment monitoring network system.
Summary of the invention
The purpose of this utility model is to be provided with one to make sampled data have true representational flue gas measurement caliberating device on brief boiler tail flue gas discharging flue.
The measurement caliberating device of the coal-burning boiler tail flue gas discharging flue that the utility model provides comprises level or vertical current-sharing pipeline section, the air intake opening of current-sharing pipeline section links to each other with boiler tail discharging flue by the multilayer fair water fin of band R radius, the gas outlet links to each other with chimney, in the current-sharing pipeline section, there is resistance to lead the mixed type current equalizer along flow of flue gas direction device successively, test the speed constant-current stabilizer and measure to demarcate sampling apparatus of several airfoil types, it is the resistance guide plate of device on current-sharing pipeline section xsect that the mixed type current equalizer is led in resistance, be furnished with several circular holes and flow deflector on the plate, said several airfoil types constant-current stabilizer each interval that tests the speed is arranged in the current-sharing pipe, be provided with the pitot hole that several gather the total head signal at the wing apical head, become 90 ° both sides to be respectively equipped with the baroport that several gather static pressure signal with the flow field at the wing head, measurement demarcation sampling apparatus is mounted in the support on the current-sharing pipeline section afterbody xsect, is distributed with the base that some confessions installed and measured and demarcated sampling probe on it.
The coal-burning boiler afterbody is discharged contains flue dust, SO
2, NO
x, CO, CO
2The hot flue gas of two-phase flow Deng pollutant, through desulfurization, after dust arrester purifies, introduced the discharge flue of boiler tail by induced draft fan, under the multilayer fair water fin guiding of band R radius, turn to, enter level or vertical current-sharing pipeline section, at first, lead the distribution and the guide effect of mixed type current equalizer through resistance, two-phase flow distributing homogeneity on the cross section is improved greatly, the airfoil type that decreases through the low-resistance constant-current stabilizer combined action of testing the speed then, eliminated eddy current and separated, make two-phase flow be tending towards even and steady, satisfy and measure and demarcate required uniformity requirement, provide total head and static pressure for calculating the two-phase flow flow velocity simultaneously, measure several CEMS probe samplings of demarcating on the sampling apparatus by being arranged on again.
The utility model is simple in structure, and institute takes up space little, only by being arranged on the brief current-sharing pipeline section on the coal-burning boiler afterbody discharging flue, just can make two-phase flow reach the homogeneity that satisfies measurement requirement, makes sampled data have real representativeness and accuracy.Test shows, the discharging exhaust gas volumn degree of accuracy that the measurement caliberating device of coal-burning boiler tail flue gas discharging flue of the present utility model is measured can reach ± and 10%, it measures the homogeneity of demarcating section, can reach U.S. RMS standard speed deviation ratio σ
rBelow 0.25.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is that mixed type current equalizer synoptic diagram, wherein Fig. 2 b are led in resistance) be Fig. 2 A-A sectional view a):
Fig. 3 is the airfoil type constant-current stabilizer synoptic diagram that tests the speed, and wherein Fig. 3 a is a front view, Fig. 3 b) be Fig. 3 C-C sectional view a), Fig. 3 c) be that Fig. 3 A a) is to view;
Fig. 4 measures to demarcate the sampling apparatus synoptic diagram.
Embodiment
In instantiation shown in Figure 1, the measurement caliberating device of coal-burning boiler tail flue gas discharging flue adopts horizontal current-sharing pipeline section, the air intake opening of horizontal current-sharing pipeline section 1 links to each other with boiler tail discharging flue 6 by the multilayer fair water fin 2 of band R radius, adopt R radius multilayer fair water fin, the fluidised form that can avoid the runner zig zag to cause departs from, the gas outlet 7 of current-sharing pipeline section links to each other with chimney, in horizontal current-sharing pipeline section, there is resistance to lead mixed type current equalizer 3, test the speed constant-current stabilizer 4 and measure and demarcate sampling apparatus 5 of several airfoil types along flow of flue gas direction device successively.It is device resistance guide plates on current-sharing pipeline section xsect that mixed type current equalizer 3 is led in resistance, legend, horizontal current-sharing pipeline section is a rectangular tube, then installing resistance on current-sharing pipeline section xsect leads the mixed type current equalizer and sees shown in Figure 2, also rectangular shape, on the resistance guide plate, be furnished with several circular holes 3-1 and flow deflector 3-2, flow deflector 3-2 or perpendicular to the resistance guide plate, or with the resistance guide plate become different angles, circular hole 3-1 and flow deflector 3-2 can be distributed on the resistance guide plate, also can be distributed on the resistance guide plate by logarithm, adopt resistance lead the mixed type current equalizer can make runner in than short duct owing to turn to about the two-phase flow that causes, the airflow homogeneity variation is improved effectively up and down.Airfoil type tests the speed constant-current stabilizer as shown in Figure 3, here, adopt three airfoil types constant-current stabilizer each interval that tests the speed repeatedly to put in the current-sharing pipe (only draw among Fig. 3 b one complete), be provided with the pitot hole 4-1 that several gather the total head signal at the wing apical head, become 90 ° both sides to be respectively equipped with the baroport 4-2 that several gather static pressure signal with the flow field at the wing head.Measurement demarcation sampling apparatus is seen shown in Figure 5, is mounted in the support on the current-sharing pipeline section afterbody xsect, is distributed with several on it for the base 5-1 that the CEMS sampling probe is installed.
Claims (2)
1. the coal-burning boiler tail flue gas discharges the measurement caliberating device of flue, it is characterized in that it comprises level or vertical current-sharing pipeline section [1], the air intake opening of current-sharing pipeline section links to each other with boiler tail discharging flue [6] by the multilayer fair water fin [2] of band R radius, gas outlet [7] links to each other with chimney, in the current-sharing pipeline section, there is resistance to lead mixed type current equalizer [3] along flow of flue gas direction device successively, test the speed constant-current stabilizer [4] and measure to demarcate sampling apparatus [5] of several airfoil types, it is the resistance guide plate of device on current-sharing pipeline section xsect that mixed type current equalizer [3] is led in resistance, be furnished with several circular holes [3-1] and flow deflector [3-2] on the plate, said several airfoil types constant-current stabilizer [4] each interval that tests the speed is arranged in the current-sharing pipe, be provided with the pitot hole [4-1] that several gather the total head signal at the wing apical head, become 90 ° both sides to be respectively equipped with the baroport [4-2] that several gather static pressure signal with the flow field at the wing head, measurement demarcation sampling apparatus [5] is mounted in the support on the current-sharing pipeline section afterbody xsect, is distributed with the base [5-1] that some confessions installed and measured and demarcated sampling probe on it.
2. by the measurement caliberating device of the described coal-burning boiler tail flue gas of claim 1 discharging flue, it is characterized in that several circular holes [3-1] of mixed type current equalizer [3] are led in said resistance and flow deflector [3-2] is distributed in the resistance guide plate or be distributed in hindering on the guide plate by logarithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274372 CN2535778Y (en) | 2001-12-19 | 2001-12-19 | Measuring calibration device for tail smoke discharge path of coal-burning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274372 CN2535778Y (en) | 2001-12-19 | 2001-12-19 | Measuring calibration device for tail smoke discharge path of coal-burning boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2535778Y true CN2535778Y (en) | 2003-02-12 |
Family
ID=33679050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01274372 Expired - Fee Related CN2535778Y (en) | 2001-12-19 | 2001-12-19 | Measuring calibration device for tail smoke discharge path of coal-burning boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2535778Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279283A (en) * | 2010-06-10 | 2011-12-14 | 沃尔克工业电子有限公司 | Device for measuring fluid speed |
| CN102445243A (en) * | 2011-11-08 | 2012-05-09 | 云南大学 | Flow-measuring device with flow stabilizing function |
| CN105043799A (en) * | 2015-07-13 | 2015-11-11 | 广东电网有限责任公司电力科学研究院 | Emission performance test method of coal-fired boiler unit |
| CN106052772A (en) * | 2015-04-14 | 2016-10-26 | 深圳鸿旺环保技术有限公司 | Gas flow measuring system |
| CN106092666A (en) * | 2016-07-26 | 2016-11-09 | 大唐环境产业集团股份有限公司 | Auxiliary device is demarcated in smoke sampling analysis |
| CN107389133A (en) * | 2017-08-08 | 2017-11-24 | 张晨 | Exhaust measurement, sampling apparatus and methods and applications |
| CN109870547A (en) * | 2019-04-08 | 2019-06-11 | 沃森测控技术（河北）有限公司 | A kind of device preventing quick flowing gas in flue |
-
2001
- 2001-12-19 CN CN 01274372 patent/CN2535778Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279283A (en) * | 2010-06-10 | 2011-12-14 | 沃尔克工业电子有限公司 | Device for measuring fluid speed |
| EP2402722A1 (en) * | 2010-06-10 | 2012-01-04 | Woelke Industrieelektronik GmbH | Device for measuring the speed of a fluid |
| CN102279283B (en) * | 2010-06-10 | 2015-10-07 | 沃尔克工业电子有限公司 | Measure the device of fluid velocity |
| CN102445243A (en) * | 2011-11-08 | 2012-05-09 | 云南大学 | Flow-measuring device with flow stabilizing function |
| CN102445243B (en) * | 2011-11-08 | 2012-11-21 | 云南大学 | Flow-measuring device with flow stabilizing function |
| CN106052772A (en) * | 2015-04-14 | 2016-10-26 | 深圳鸿旺环保技术有限公司 | Gas flow measuring system |
| CN106052772B (en) * | 2015-04-14 | 2019-08-27 | 赛默飞世尔（上海）仪器有限公司 | Gas flow measuring system |
| CN105043799A (en) * | 2015-07-13 | 2015-11-11 | 广东电网有限责任公司电力科学研究院 | Emission performance test method of coal-fired boiler unit |
| CN106092666A (en) * | 2016-07-26 | 2016-11-09 | 大唐环境产业集团股份有限公司 | Auxiliary device is demarcated in smoke sampling analysis |
| CN106092666B (en) * | 2016-07-26 | 2019-04-16 | 大唐环境产业集团股份有限公司 | Smoke sampling analysis calibration auxiliary device |
| CN107389133A (en) * | 2017-08-08 | 2017-11-24 | 张晨 | Exhaust measurement, sampling apparatus and methods and applications |
| CN109870547A (en) * | 2019-04-08 | 2019-06-11 | 沃森测控技术（河北）有限公司 | A kind of device preventing quick flowing gas in flue |
| CN109870547B (en) * | 2019-04-08 | 2024-04-30 | 沃森测控技术（河北）有限公司 | Device for preventing fast flowing gas in flue |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |