CN101294969A - Flue gas monitoring instrument pipe line with single pump implementing gas production, cleaning, drainage and back flushing - Google Patents
Flue gas monitoring instrument pipe line with single pump implementing gas production, cleaning, drainage and back flushing Download PDFInfo
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- CN101294969A CN101294969A CNA2007100277300A CN200710027730A CN101294969A CN 101294969 A CN101294969 A CN 101294969A CN A2007100277300 A CNA2007100277300 A CN A2007100277300A CN 200710027730 A CN200710027730 A CN 200710027730A CN 101294969 A CN101294969 A CN 101294969A
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- flue gas
- cleaning
- gas production
- blowback
- air
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Abstract
The invention discloses a flue gas monitor pipeline which realizes gas-sampling, washing, water draining and back-blowing by a single pump; four functions of measuring gas-sampling, washing a sensor, draining condensed water and back-blowing a filtering net can be realized by an air extracting pump.
Description
Affiliated technical field
The present invention relates to flue gas sampler, flue gas analyzer, flue gas online automatic monitor (following general designation " flue gas monitoring instrument ") that environmental monitoring field flue gas detects, especially only just realized the overall treatment of gas production, cleaning, draining, blowback with single aspiration pump.
Background technology
At present, flue gas monitoring instrument is when functions such as realization gas production measurement, cleaning sensor, discharging condensate water, blowback screen pack, and generally use 3 pumps: gas production, cleaning use aspiration pump, draining peristaltic pump, blowback then to use special high-power blowback pump.This design has increased power consumption, has increased weight and volume, is unfavorable for the miniaturization and the cost degradation of product.
Especially, on-the-spot peristaltic pump formula sampling thief is 2006 years " the some main project guides of science and technology-oriented Technological Innovation of Small and Medium Enterprises fund " clearly to classify unsupported project as.
Summary of the invention
In order to overcome the shortcoming of existing flue gas monitoring instrument, the invention provides a kind of circuit design, increase several cheapnesss, solenoid directional control valve that volume is little,, just realized gas production measurement, cleaning sensor, discharging condensate water, four functions of blowback screen pack only with an aspiration pump.
Technical scheme
Sampling gun barrel, glass fibre filter cartridge, condenser, moisture trap, aspiration pump, sensor module, return-air return pipe with the band filter screen ... Deng parts, be connected in the pipeline with 4 solenoid directional control valves.Embedded software is according to the action of 4 solenoid directional control valves of workflow control.
When gas production is measured, sample gas flow through successively stainless steel filtering net, sampling gun barrel, glass fibre filter cartridge, condenser, moisture trap, aspiration pump, sensor module, return-air return pipe;
During cleaning sensor, extraneous air flow through successively air cleaner, aspiration pump, sensor module, return-air return pipe;
Discharging is during condensate water, extraneous air flow through successively air cleaner, aspiration pump, moisture trap, condenser, return-air return pipe;
During the blowback screen pack, extraneous air flow through successively air cleaner, blowback nozzle.
The invention has the beneficial effects as follows, reduced power consumption, reduced volume and weight, reduced cost; The gas production measuring phases has been cleared up the influence of flue negative pressure (or malleation) to the gas production flow velocity; Reduce the quantity of pump, reduced the power of pump, weakened electromagnetic interference (EMI).
Description of drawings
Fig. 1 is that " flue gas monitoring is with " each associated components and pipeline connecting figure in the present invention;
Fig. 2 is 4 solenoid valve states of gas production measuring process and sample gas flow graph;
Fig. 3 is 4 solenoid valve states of cleaning sensor process and air flow figure;
Fig. 4 is discharging 4 solenoid valve states of condensate water process and air, condensate water flow graph;
Fig. 5 is 4 solenoid valve states of blowback screen pack process and air flow figure.
The present invention is further described below in conjunction with drawings and Examples.
Embodiment
In Fig. 1, the title and the function of each parts are as follows:
1. stainless steel filtering net once filters the dust in the flue gas;
2. blowback nozzle, conical cavity form high velocity air blowback stainless steel filtering net, and the dust that is accumulated in the outside is come off;
3. condenser, the semiconductor refrigerating assembly that utilizes peltier effect to make cools off sample gas fast;
4. moisture trap is collected in liquid storing cup with the condensate water that produces after the moist sample air cooling but, and sample gas is pumped away from top;
5. solenoid directional control valve F3;
6. solenoid directional control valve F2;
7. restrictor is kept the low discharge that gas production is measured;
8. solenoid directional control valve F1;
9. air cleaner filters the suspension of extraneous air;
10. aspiration pump is bled, the power source of draining;
11. sensor module, the core component of apparatus measures can be electrochemical, also can be optical principle;
12. damper, flue high negative pressure damage sensor when preventing instrument " standby " state;
13. solenoid directional control valve F4;
14. the glass fibre filter cartridge carries out secondary filtration to the dust in the flue gas;
15. air intake opening, the inlet of sample gas in the sampling gun barrel
16. the return-air return pipe, the muffler that gas production is measured, the return pipe of discharging condensate water.
17. the sampling gun barrel, the outer tube of the sampling rifle of insertion flue.
Fig. 2 represents the gas production measuring process, and the valve state of solenoid valve F1, F2, F3, F4 is as figure, and the sample air-flow is to shown in arrow among the figure.Because air intake opening, all in flue, self-equilibrating is cleared up the influence (referring to I utility model patent ZL02272211.4 " integrated flue gas analyser ") of negative pressure (or malleation) to the gas production flow velocity to the return-air mouth.
After the gas production measuring phases finished, F1 commutated (as Fig. 3), and extraneous air is behind air cleaner, and the sensor of flowing through reaches the cleaning purpose.
After reaching predetermined scavenging period, F2, F4 commutate (as Fig. 4) simultaneously, and the condensate water in the moisture trap is pressed into the return-air return pipe by extraneous air, finally is discharged into flue.Because the resistance of glass fiber filter material and condenser inner chamber is very big, even the little air reverse direction flow is arranged through condenser, filter cartridge, air intake opening, does not also influence draining.
After reaching predetermined water discharge time, F4 resets, and F3 commutates (as Fig. 5), and extraneous air is through blowback nozzle high speed blowback filter screen.Because the blowback passage is without restrictor, damper, internal resistance is very little, more helps forming high speed blowback air-flow.
After reaching the blowback time, F1, F2, F3 reset, and instrument circulates again and enters the gas production measuring phases ...
What be worth indicating is, if negative pressure (state's inner flue mostly assembles induced draft fan, the ubiquity negative pressure) is arranged, then draining, blowback better effects if in the flue.
Claims (2)
1. a flue gas sampler or flue gas analyzer or flue gas online automatic monitor is characterized in that: use single aspiration pump, just realized functions such as gas production measurement, cleaning sensor, discharging condensate water, blowback screen pack.
2. flue gas sampler according to claim 1 or flue gas analyzer or flue gas online automatic monitor is characterized in that: add an amount of solenoid directional control valve in the instrument pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100277300A CN101294969A (en) | 2007-04-26 | 2007-04-26 | Flue gas monitoring instrument pipe line with single pump implementing gas production, cleaning, drainage and back flushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100277300A CN101294969A (en) | 2007-04-26 | 2007-04-26 | Flue gas monitoring instrument pipe line with single pump implementing gas production, cleaning, drainage and back flushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101294969A true CN101294969A (en) | 2008-10-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100277300A Pending CN101294969A (en) | 2007-04-26 | 2007-04-26 | Flue gas monitoring instrument pipe line with single pump implementing gas production, cleaning, drainage and back flushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101294969A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879332A (en) * | 2012-10-09 | 2013-01-16 | 戴会超 | Inflow water protector for greenhouse gas analyzer and control method of inflow water protector |
| CN102941003A (en) * | 2012-11-20 | 2013-02-27 | 意昂神州（北京）科技有限公司 | Equipment and method for detecting flue gas discharged by power plant |
| CN104034829A (en) * | 2014-05-29 | 2014-09-10 | 大连世有电力科技有限公司 | Gas supply device for transformer oil chromatography on-line monitoring system |
| CN104849419A (en) * | 2014-02-19 | 2015-08-19 | 厦门水贝自动化科技有限公司 | Sensor automatic cleaning mechanism |
| CN105547768A (en) * | 2016-01-04 | 2016-05-04 | 梅思安(中国)安全设备有限公司 | Sampling probe with self-cleaning function |
| CN106248595A (en) * | 2016-08-04 | 2016-12-21 | 西安热工研究院有限公司 | Bivalent mercury and the test system and method for nonvalent mercury in a kind of coal-fired plant flue gas |
| CN107615038A (en) * | 2015-03-06 | 2018-01-19 | 美铝澳大利亚有限公司 | On-line period device |
| CN111289316A (en) * | 2020-05-09 | 2020-06-16 | 翼捷安全设备（昆山）有限公司 | Gas sampling system for high dust and high humidity |
-
2007
- 2007-04-26 CN CNA2007100277300A patent/CN101294969A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879332A (en) * | 2012-10-09 | 2013-01-16 | 戴会超 | Inflow water protector for greenhouse gas analyzer and control method of inflow water protector |
| CN102879332B (en) * | 2012-10-09 | 2014-10-01 | 戴会超 | Inflow water protector for greenhouse gas analyzer and control method of inflow water protector |
| CN102941003A (en) * | 2012-11-20 | 2013-02-27 | 意昂神州（北京）科技有限公司 | Equipment and method for detecting flue gas discharged by power plant |
| CN102941003B (en) * | 2012-11-20 | 2016-01-20 | 意昂神州（北京）科技有限公司 | A kind of equipment for detecting power plant emission flue gas and method |
| CN104849419A (en) * | 2014-02-19 | 2015-08-19 | 厦门水贝自动化科技有限公司 | Sensor automatic cleaning mechanism |
| CN104034829A (en) * | 2014-05-29 | 2014-09-10 | 大连世有电力科技有限公司 | Gas supply device for transformer oil chromatography on-line monitoring system |
| CN107615038A (en) * | 2015-03-06 | 2018-01-19 | 美铝澳大利亚有限公司 | On-line period device |
| CN105547768A (en) * | 2016-01-04 | 2016-05-04 | 梅思安(中国)安全设备有限公司 | Sampling probe with self-cleaning function |
| CN105547768B (en) * | 2016-01-04 | 2018-03-16 | 梅思安(中国)安全设备有限公司 | sampling probe with self-cleaning function |
| CN106248595A (en) * | 2016-08-04 | 2016-12-21 | 西安热工研究院有限公司 | Bivalent mercury and the test system and method for nonvalent mercury in a kind of coal-fired plant flue gas |
| CN111289316A (en) * | 2020-05-09 | 2020-06-16 | 翼捷安全设备（昆山）有限公司 | Gas sampling system for high dust and high humidity |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081029 |