CN2618159Y - Fractional sampler for diluted mixed turbulence in flue - Google Patents
Fractional sampler for diluted mixed turbulence in flue Download PDFInfo
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- CN2618159Y CN2618159Y CN 03240576 CN03240576U CN2618159Y CN 2618159 Y CN2618159 Y CN 2618159Y CN 03240576 CN03240576 CN 03240576 CN 03240576 U CN03240576 U CN 03240576U CN 2618159 Y CN2618159 Y CN 2618159Y
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- air
- cabin
- flue
- dilution
- bucket
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Abstract
The utility model relates to a smoke sampler, in particular to a smoke flue dilution mixed turbulent grading sampler that collects grain samples in mixed gas of environmental air and smoke organized-discharged from fixed sources, belonging to the technical field of environmental monitoring. Prior samplers use fiberglass lauter tank to collect dust samples without grain-size division device to conduct classification according to grain sizes, thus causing difficulties for the source strong quantification of smoke grains with different sizes and the establishment of chemical component spectrum. In order to overcome the disadvantages of the prior arts, by adding a dilution cabin and a corresponding pressure balance gas path on the basis of prior smoke samplers and environmental air grain samplers, thus the utility model can collect grain substance of different sizes organized-discharged from various fixed sources. The sampler can meet requirements of monitoring work, realizes smoke fast sampling, ensures a similar-to-real physical and chemical evolvement situations of smoke entering environmental air, and can collect grain samples of different sizes.
Description
Technical field
The utility model relates to flue dust class sampling thief, and particularly a kind of flue diluted mixture turbulent flow andersen sampler of gathering aerosol sample in stationary source discharged flue gas and the surrounding air mixed gas belongs to the environmental monitoring technology field.
Background technology
The particle that stationary pollution source discharges in a organized way exists with aerosol shape, is one of main source of particle in the surrounding air.Utilize the flue sampling thief to obtain the aerosol sample of fixed-contamination source emission, study the chemical composition of the particle of its size-grade distribution and different-grain diameter, for monitoring: the pollution level of surrounding air, important practical value all arranged to whether appropriate health effects degree and the pollution control measures taked etc.
The producer of the flue of China's production at present product sampler is a lot, as Qingdao LaoShan Application Technology Research Institute, and Wuhan rainbow enviromental protection instrument factory etc.The flue sampling thief of these manufacturer production is the cyclone type sampling thief mostly, and its system architecture can be divided into five major parts: sampler, dust collect plant, condensation and drying device, flow measurement control device and sampling power.
This quasi-instrument has following defective in actual applications:
1) do not have flue dust particle diameter segmenting device, what mainly gather is the full aerosol sample of flue dust.Often need in actual applications to determine to discharge in the chimney the size distribution of particle, as the percentage by weight of bulky grain thing (below 100 microns) and small particle (below 10 microns), and determine the source strength of different-grain diameter particle with this.But above-mentioned instrument can not reach this requirement.
2) said apparatus adopts the filter cylinder dust collect plant mostly, as the glass fibre filter cylinder.This dust collect plant can make the flue dust of considerable part accumulate in and cause the collection difficulty in the fiber holes.Organism and inorganics that existing on the other hand glass fibre filter cylinder contains are more, are not suitable for element, ion and organic analysis, become open score to produce difficulty to the flue dust of setting up different-grain diameter.
3) on the present China market a kind of in addition " impact type particulate cascade instrument ".This instrument adopts " impact type " principle that grit is cut, weighs to determine the shared percentage by weight of particle in the different-grain diameter scope.But this sampling thief also just cuts the grit in the design particle size range, and other particle diameter components in proportions then can only be estimated by mathematical statistics methods such as recurrence.Because this instrument often can not obtain the particulate matter in the needed particle size range, so equally also can't set up needed derived components spectrum.
Summary of the invention
The utility model is in order to overcome the defective of existing various stationary source smoke dust sampling instruments, the specialized designs of carrying out under the condition that satisfies the aerodynamics sampling request.
The requirement of technical solutions of the utility model:
1) realizes the flue dust isokinetic sampling
When gathering the flue dust in the flue gas, must satisfy isokinetic sampling's condition, promptly enter the grit speed in the sampling thief and the gas velocity at flue build-in test point place and equate.
2) realize that entering flue gas that the evolution condition stationary source of the approaching physics of the true process of surrounding air, chemistry discharges with flue gas mixes with surrounding air in the aiutage exit and cool off, condense this moment, physics such as evaporation, cohesion and secondary chemical reaction, chemical variation, the chemical composition of the particle in the mixed gas in size distribution and different-grain diameter scope also can change.In order to collect near the aerosol sample under the above-mentioned evolution condition, must directly from the stationary source aiutage, not gather aerosol sample, but flue gas is introduced air dilution flue gas cabin (being called for short the dilution cabin), dilute flue gas by certain dilution ratio with clean dry air in the dilution cabin, simulated flue gas enters the state in the surrounding air.
3) can collect the interior aerosol sample of specified particle diameter scope
In the dilution cabin, sample the aerosol sample in the specified particle diameter scope with the sampling thief that has specific cutting head.
Principle of work of the present utility model:
Work aerodynamic principle of the present utility model.The sampling rifle must the isokinetic sampling enter the flue gas flow Q that dilutes the cabin
1And air compressor is pressed into the dried and clean air mass flow Q in dilution cabin
2With the mixed gas flow Q of particulate cascade sampling device from the extraction of dilution cabin
3With the mixed gas flow Q of off-gas pump from the discharge of dilution cabin
4Reach balance, that is:
Q
1+Q
2＝Q
3+Q
4
In the formula: Q
1-enter the dilution cabin flue gas flow, L/min;
Q
2-enter the dry cleansing air mass flow of dilution, L/min;
Q
3The sampling mixed gas flow in-discharge dilution cabin, L/min;
Q
4The mixed gas flow in-discharge dilution cabin, L/min.
Q
1, Q
2, Q
3And Q
4All adjust the gas flow that is corrected to (1 atmospheric pressure, 0 ℃) under the standard state.
The technical solution of the utility model: flue diluted mixture turbulent flow andersen sampler (YSYQ-1 type), it is made of dilution cabin, normal atmospheric particulate cascade sampling device, air compression system and exhaust system; The cutting head of dilute in the cabin, normal atmospheric particulate cascade sampling device being settled in the bottom, flue gas by the dilution top, cabin (loam cake) smoke inlet and pressurized air by air intake lump together enter the dilution cabin, pressurized air is finished by air compression system, unnecessary mixed gas is discharged by exhausr port in the dilution cabin, and system finishes by exhaust system.The dilution cabin is a core summary of the invention of the present utility model, is made of for three barrels interior China and foreign countries.Normal atmospheric particulate cascade sampling device, air compression system and exhaust system all are connected with the dilution cabin.
The beneficial effects of the utility model: can realize the flue dust isokinetic sampling, can realize that flue gas enters the evolution condition of approaching real physics, chemistry in the surrounding air, satisfying under the above-mentioned sampling condition, can collect the aerosol sample that the stationary source in the specified particle diameter scope discharges in a organized way, satisfy the requirement of detection and research work.
Description of drawings
Fig. 1 flue diluted mixture turbulent flow andersen sampler principle schematic
Fig. 2: flue diluted mixture turbulent flow andersen sampler structural representation
Fig. 3: normal atmospheric particulate cascade sampling device structural representation
Among the figure:
1, in sampling pump 2, valve 3, sampling pump flowmeter 4, bottom sealing mechanism 5, Filter film type particle particle diameter cutting head 6, the dilution cabin bucket 7, dilution out of my cabin bucket 8, have interior bucket 9, smoke inlet 10, the thermometer (T of gas mixing jet tube
2) 11, air intake 12, thermometer (T
1) 13, mixture pressure meter (P
2) 14, air pressure gage (P
1) 15, exhausr port 16, diluent air flow control valve 17, compressed air require meter 18, unnecessary air delivery flow variable valve 19, exhaust flow-meter 20, vacuum pump for vent 21, compressed air drying filtrator 22, discharge filter 23, compressed air valve 1 24, compressor 1 25, compressed air valve 2 26, compressor 2
Embodiment
Specify below in conjunction with 2 pairs of the utility model of accompanying drawing.Flue diluted mixture turbulent flow andersen sampler (YSYQ-1 type) is made up of dilution cabin, normal atmospheric particulate cascade sampling device, air compression system and exhaust system 4 parts, and the main building block division of each system is as follows:
(1) dilution cabin
The dilution cabin is a core summary of the invention of the present utility model, is made of for three barrels interior China and foreign countries.In 7 fens loam cakes of bucket and staving, loam cake can be opened closure, air inlet pipeline links to each other with it respectively with gas exhaust piping.Two groups of air inlet pipelines synthesize one the tunnel in the loam cake outside, enter bucket 8 in the dilution cabin from loam cake, and the design and installation position has guaranteed that flue gas can enter interior bucket with air under unpowered condition.The cutting head 5 of andersen sampler is settled in outer bucket 7 bottoms, and cutting head links to each other with vacuum pump 1 by exhaust pipe.One seal is arranged at outer bucket bottom, changes cutting head by seal.Interior bucket diameter is about 1/3 of outer bucket diameter, be welded on the loam cake inboard, mixed gas tentatively mixes and forms turbulent flow at interior barrel, mixed gas is bucket 6 from interior bucket end opening enters, middle bucket bottom is sealed, and is Ω shape, and suitable for reading is open type, further mixed the bucket back during part mixed gas entered, and enters outer bucket then.The flue dust of bucket bottom launched during the design of Ω shape had promoted to fall, and disclosed outside suitable for reading entering.Middle bucket has guaranteed that two kinds of gases have certain residence time in the dilution cabin, so that more fully mix.Outer bucket bottom also is provided with a bleeding point and links to each other with off-gas pump by pipeline, and by gas control valve 18, flowmeter 19 is discharged outer bucket by vacuum pump 20 with unnecessary gas, forms the mobile equilibrium of gas in the dilution cabin.
(2) normal atmospheric particulate cascade sampling device
This part is made up of particle cutting head 5, flowmeter 3, the operation valve 2 of bleeding, vacuum pump 1 and exhaust pipe.Its effect is a particle sample device of gathering the specified particle diameter scope from the mixed gas in dilution cabin.
(3) air compression system
Air compression system is successively respectively by compressed air valve 1 (23), compressed air valve 2 (25), compressed air require meter 17, diluent air flow control valve 16, air intake 11 from compressor 1 (24), compressor 2 (26), air is compressed into dilution cabin (interior bucket), after the diluent air flow control valve, air pressure gage 14 and thermometer 12 are installed on pipeline.
(4) exhaust system
This part is made up of vacuum pump 20, gas exhausting valve door 18, flowmeter 19, discharge filter 22 and gas exhaust piping.Its effect is that unnecessary mixed gas is kept the gas equilibrium in dilution cabin in the discharge dilution cabin.
Embodiment
Concrete sampling step:
(1) closes smoke inlet valve 9, start air compressor 24 and 26, regulate compressor air valve 23,25 and 16, make the dry cleansing pressurized air of certain flow enter dilution cabin, the air mass flow Q that record enters
2
(2) start sampling vacuum pump 1 bleeding regulating valve 2, make flowmeter 3 be adjusted to the predetermined amount of flow value.This flow of sampling film that installs cutting head is sampled.
(3) start vacuum pump for vent 20, regulate drain tap 18, make the pressure gauge 13 of dilution cabin loam cake be adjusted to zero, the flow of recording flowmeter (15).
(4) open flue gas air intake valve (9), main control valve (18) is also regulated other valves, makes flue gas enter the dilution cabin by certain flow, and to make tensimeter 13 be zero, and dilute cabin air inlet and exhaust balance this moment, that is:
Q
1+Q
2＝Q
3+Q
4
(5) correlation parameter reference value
1. flowmeter reference value:
Q
1——10～40L/min
Q
2——120～180L/min
Q
3——100～120L/min
Q
4——30～100L/min
2. flue gas dilution multiple R
R＝Q
1/Q
2×100％
Claims (5)
1, a kind of flue diluted mixture turbulent flow andersen sampler comprises the dilution cabin, it is characterized in that: it is made of dilution cabin, normal atmospheric particulate cascade sampling device, air compression system and exhaust system; The cutting head of dilute in the cabin, normal atmospheric particulate cascade sampling device being settled in the bottom (5), smoke inlet (9) and the pressurized air of flue gas by dilution top, cabin (loam cake) lumps together to enter by air intake (11) and dilutes cabin (interior barrel), pressurized air is finished by air compression system, the unnecessary mixed gas in dilution cabin is discharged by exhausr port (15), is finished by exhaust system.
2 flue diluted mixture turbulent flow andersen samplers according to claim 1, it is characterized in that: described dilution cabin is the three barrels of formations in interior China and foreign countries, outer bucket (7) divides loam cake and staving, loam cake can be opened closed, links to each other with gas exhaust piping with air inlet pipeline, and flue gas and air enter the dilution cabin by pipeline, in the dilution cabin, the bottom is mounted with normal atmospheric particulate cascade sampling device, communicate with sampling pump (1), its cutting head (5) is placed in bottom in the dilution cabin, changes cutting head by the seal of bottom.Interior bucket (8) diameter is about 1/3 of outer bucket diameter, be welded on the loam cake inboard, interior bucket is not gone to the bottom, and opens wide, and mixed gas tentatively mixes bucket (6) from end opening enters in interior bucket footpath, middle bucket bottom is a Ω shape, and seal, top is opened type, can be directly behind the bucket during a part of mixed gas enters from suitable for reading entering outside barrel, flue gas can eject again after part mixed gas was fallen the middle barrel of barrel end, bucket outside suitable for reading entering.
3, flue diluted mixture turbulent flow andersen sampler according to claim 1, it is characterized in that: described normal atmospheric particulate cascade sampling device is made up of sampling cutting head (4), sampling pump (1), sampling pump flowmeter (3), valve (2) and pipeline, and sample gas is passed through cutting head, sampling pump flowmeter, vacuum pump and valve successively.
4, flue diluted mixture turbulent flow andersen sampler according to claim 1, it is characterized in that: described air compression system is successively respectively by compressed air valve 1 (23), compressed air valve 2 (25), compressed air require meter (17), diluent air flow control valve (16), air intake (11) from compressor 1 (24), compressor 2 (26), air is compressed into dilution cabin, after the diluent air flow control valve, air pressure gage (14) and thermometer (12) are installed on pipeline.
5, flue diluted mixture turbulent flow andersen sampler according to claim 1, it is characterized in that: described exhaust system is to pass through exhaust flow-meter (19), unnecessary air delivery flow variable valve (18) successively respectively to vacuum pump for vent (20) from the exhausr port (15) that dilutes the bottom, cabin, and air is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03240576 CN2618159Y (en) | 2003-03-14 | 2003-03-14 | Fractional sampler for diluted mixed turbulence in flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03240576 CN2618159Y (en) | 2003-03-14 | 2003-03-14 | Fractional sampler for diluted mixed turbulence in flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2618159Y true CN2618159Y (en) | 2004-05-26 |
Family
ID=34250079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03240576 Expired - Fee Related CN2618159Y (en) | 2003-03-14 | 2003-03-14 | Fractional sampler for diluted mixed turbulence in flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2618159Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308649A (en) * | 2013-01-17 | 2013-09-18 | 清华大学 | Multi-channel multi-component stationary source sampling and analysis system |
| CN104458357A (en) * | 2014-10-29 | 2015-03-25 | 中国环境科学研究院 | Extensible pollution source particulate matter sheath gas protection sampling diluter |
| CN104502147A (en) * | 2014-04-11 | 2015-04-08 | 上海创塔电子科技有限公司 | Automatic switching device for PM2.5, PM10 and SPM cutters |
| CN107478855A (en) * | 2017-08-10 | 2017-12-15 | 安徽省碧水电子技术有限公司 | Flue gas automatic monitored control system and its method with flow alarm function control |
-
2003
- 2003-03-14 CN CN 03240576 patent/CN2618159Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308649A (en) * | 2013-01-17 | 2013-09-18 | 清华大学 | Multi-channel multi-component stationary source sampling and analysis system |
| CN104502147A (en) * | 2014-04-11 | 2015-04-08 | 上海创塔电子科技有限公司 | Automatic switching device for PM2.5, PM10 and SPM cutters |
| CN104458357A (en) * | 2014-10-29 | 2015-03-25 | 中国环境科学研究院 | Extensible pollution source particulate matter sheath gas protection sampling diluter |
| CN107478855A (en) * | 2017-08-10 | 2017-12-15 | 安徽省碧水电子技术有限公司 | Flue gas automatic monitored control system and its method with flow alarm function control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |