CN204177643U - Expandable type pollution source particle sheath gas shielded sampling diluter - Google Patents
Expandable type pollution source particle sheath gas shielded sampling diluter Download PDFInfo
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- CN204177643U CN204177643U CN201420635347.9U CN201420635347U CN204177643U CN 204177643 U CN204177643 U CN 204177643U CN 201420635347 U CN201420635347 U CN 201420635347U CN 204177643 U CN204177643 U CN 204177643U
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Abstract
Expandable type pollution source particle sheath gas shielded sampling diluter of the present utility model, comprise isokinetic sampling's device, the one-level dilution chamber be connected successively with isokinetic sampling's device, secondary dilution chamber, chamber and sampling thief, isokinetic sampling's device comprises constant speed pipe, be fixed on the pitot tube on constant speed pipe, mass flow controller and data processor, one end of constant speed pipe such as to be provided with at the kinetic head, one end is connected with one-level dilution chamber by breather line in addition, one-level dilution chamber outside is provided with multiple circulating pipe, one end of circulating pipe is connected to one-level dilution chamber inlet end, the other end is connected to the outlet side of one-level dilution chamber, circulating pipe is also provided with circulating air pump, gas in circulating pipe under the effect of circulating air pump at circulating pipe and one-level dilution chamber internal circulation flow, expandable type pollution source particle sheath gas shielded sampling diluter of the present utility model prevents particle from sticking on the inwall of one-level dilution chamber and secondary dilution chamber, omnidistance isokinetic sampling can be realized simultaneously, improve the degree of accuracy of sampling.
Description
Technical field
The utility model relate to a kind of stationary source sampling analysis system, is specifically related to the specialized equipment that a kind of flue gas to stationary source discharge carries out sampling analysis.
Background technology
The soot emissions of stationary source are the important roots causing atmospheric pollution, the particle that especially those particles are tiny, surface area is larger, and they carry out physics, the chemical change of various complexity in long transmitting procedure, cause adverse effect to health.
Monitoring for stationary source emission gases is the formation mechenism of Pollution Study, the important means of Control pollution soot emissions.At present, following defect is more or less also existed to the monitoring device that stationary source is implemented: aerosol sample can not be gathered, flue dust particle diameter Division Sampling can not be carried out, flue dust can not be measured and be discharged into the true form in atmospheric environment.
Why needing to carry out flue dust particle diameter discrete sampling, is that the pollution of flue dust to air is more serious because when particle is less than PM10, the particle being wherein less than PM2.5 can directly enter human body alveolar, virus is brought into, so, particularly important to the collection research of finely ground particles in flue dust.
Although sampling diluter of the prior art can carry out particle diameter discrete sampling, but also there is following problem: 1, concentrated on one-level dilution chamber central region by the air-flow that zero air generator sucks and move, one-level dilution chamber medial surface air current flow is very weak even not to flow, some particle can be adsorbed on the sidewall of one-level dilution chamber like this, causes sampled data to occur deviation; When 2, producing aerodynamic force by zero air generator, the front inner wall of secondary dilution chamber also there will be gas not flow phenomenon, particle can be adsorbed on secondary dilution chamber inwall, causes sampled data deviation.
Utility model content
The utility model object of the application is to solve current above-mentioned technical matters, and provides a kind of expandable type pollution source particle sheath gas shielded sampling diluter that can prevent particle from sticking to dilution chamber inwall, raising sample precision.
In order to complete the utility model object of the application, the application by the following technical solutions:
Expandable type pollution source particle sheath gas shielded sampling diluter of the present utility model, comprise isokinetic sampling's device, the one-level dilution chamber be connected successively with described isokinetic sampling's device, secondary dilution chamber, chamber and sampling thief, described isokinetic sampling's device comprises constant speed pipe, be fixed on the pitot tube on described constant speed pipe, mass flow controller and data processor, one end of described constant speed pipe such as to be provided with at the kinetic head, one end is connected with described one-level dilution chamber by breather line in addition, described pitot tube and mass flow controller are connected with described data processor respectively, it is characterized in that: described one-level dilution chamber outside is also provided with the multiple circulating pipes for washing away described one-level dilution chamber inwall, one end of described circulating pipe is connected to described one-level dilution chamber inlet end, the other end is connected to the outlet side of described one-level dilution chamber, described circulating pipe is also provided with circulating air pump, gas in described circulating pipe under the effect of circulating air pump at described circulating pipe and one-level dilution chamber internal circulation flow, described one-level dilution chamber is connected with described secondary dilution chamber by advection pipe, one end of described advection pipe is communicated with described one-level dilution chamber, one end is taper gas outlet in addition, described taper gas outlet is communicated in described secondary dilution chamber, described advection pipe outer cover is connected to outer tube, described outer tube and advection pipe are clearance fit, described outer tube one end is with the taper gas outlet of described advection pipe same shape and is communicated with described secondary dilution chamber, one end is connected to zero air generator in addition, described secondary dilution chamber inlet end outer wall is also provided with multiple draft tube, described draft tube one end is communicated with described secondary dilution chamber by multiple air admission hole, one end is communicated with described zero air generator in addition.
Multiple circulating pipe described in the utility model is all connected with described circulating air pump, described circulating pipe is positioned at described circulating air pump intake place and is provided with mass flow controller, thermometer, hygrometer and pressure gauge, described draft tube is also provided with mass flow controller, and described mass flow controller, thermometer, hygrometer and pressure gauge are connected with described data processor respectively.
Secondary dilution chamber described in the utility model is provided with escape pipe, and described escape pipe is provided with variable valve, and described advection pipe is also provided with thermometer.
Breather line described in the utility model is provided with attemperator, and described attemperator is provided with thermometer, and described thermometer is connected with described data processor.
Sampling thief described in the utility model is positioned at the bottom of described chamber and is communicated with its inside, described sampling thief is in series by cyclone separator, film holder and sampling pump, the air intake opening place of described sampling pump is provided with mass flow controller, and described cyclone separator is communicated with described chamber.
Pitot tube described in the utility model is provided with thermometer, pressure gauge and hygrometer, and described chamber is also provided with thermometer, pressure gauge and hygrometer, and described thermometer, pressure gauge and hygrometer are connected with described data processor respectively.
Sampling thief described in the utility model is at least one and is evenly arranged on the bottom of described chamber, and the side of described chamber is also provided with multiple expansion interface, and the top of described chamber is also provided with relief port, and described relief port is provided with filtrator.
Expandable type pollution source particle sheath gas shielded sampling diluter of the present utility model is compared with prior art distinguished and is: (1) expandable type pollution source of the present utility model particle sheath gas shielded sampling diluter is by adding circulating pipe in the outside of one-level dilution chamber, draft tube is set up in the front end of secondary dilution chamber, and adopt zero air generator as aerodynamic force, effectively prevent particle sticks on dilution chamber inwall, improves sample precision; (2) zero air generators are coordinated by advection pipe and outer tube and produce aerodynamic force, can simulated flue gas diffusion in an atmosphere better, and zero air generator can wash away air-flow for draft tube provides simultaneously.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of expandable type pollution source particle sheath gas shielded of the present utility model sampling diluter.
Embodiment
As shown in Figure 1, the expandable type pollution source particle sheath gas shielded sampling diluter of the present embodiment, comprise isokinetic sampling's device 1, the one-level dilution chamber 2 be connected successively with isokinetic sampling's device 1, secondary dilution chamber 3, chamber 4 and sampling thief 5, isokinetic sampling's device 1 comprises constant speed pipe 11, be fixed on the pitot tube 12 on constant speed pipe 11, mass flow controller 13 and data processor 14, one end of constant speed pipe 11 such as to be provided with at the kinetic head 15, one end is connected with one-level dilution chamber 2 by breather line in addition, pitot tube 12 is connected with data processor 14 respectively with mass flow controller 13, one-level dilution chamber 2 outside is also provided with the circulating pipe 6 for washing away one-level dilution chamber 2 inwall, one end of circulating pipe 6 is connected to one-level dilution chamber 2 inlet end, the other end is connected to the outlet side of one-level dilution chamber 2, circulating pipe 6 is also provided with circulating air pump 7, gas in circulating pipe 6 under the effect of circulating air pump 7 at circulating pipe 6 and one-level dilution chamber 2 internal circulation flow, one-level dilution chamber 2 is connected with secondary dilution chamber 3 by advection pipe 8, one end of advection pipe 8 is communicated with one-level dilution chamber 2, one end is taper gas outlet 81 in addition, taper gas outlet 81 is communicated in secondary dilution chamber 3, advection pipe 8 outer cover is connected to outer tube 82, outer tube 82 and advection pipe 8 are clearance fit, outer tube 82 one end is with the taper gas outlet 81 of advection pipe 8 same shape and is communicated with secondary dilution chamber 3, one end is connected to zero air generator 9 in addition, secondary dilution chamber 3 inlet end outer wall is also provided with multiple draft tube 10, draft tube 10 one end is communicated with secondary dilution chamber 3 by multiple air admission hole, one end is communicated with zero air generator 9 in addition.
When zero air generator 9 in the present embodiment is blown in outer tube 82, gas moves in the gap of outer tube 82 and advection pipe 8, when gas enters secondary dilution chamber 3 from taper gas outlet, air-flow cross flow one, front end, taper gas outlet can form low-pressure area, gas flow low-pressure area now in advection pipe 8, and flow in chamber under the drive of air-flow around, gas in one-level dilution chamber 2 can be inhaled to secondary dilution chamber 3 by this low-pressure area simultaneously, gas in one-level dilution chamber 2 can form air curtain (dashed region as in Fig. 1), now partial particulate thing can stick on the inwall of one-level dilution chamber 2, and the circulating air that circulating pipe 6 is formed fails to be convened for lack of a quorum and washes away the inwall of one-level dilution chamber 2, the particle of adhesion is blown afloat and is again diffused in the gas of one-level dilution chamber 2, thus reduction sampling error, and meanwhile the sidewall of secondary dilution chamber 3 is washed away by cross-over gases flowing, but its leading inside wall there will be the slowly even static situation of air current flow, some particles can stick in its front end side wall, and draft tube can play the effect of washing away secondary dilution chamber 3 front end side wall, prevent particle from sticking in front inner wall.
The clean gas that circulating air pump 7 in the present embodiment enters in one-level dilution chamber 2 body can dilute flue gas, and can prevent particle from sticking on the inwall of one-level dilution chamber 2, the pure air that zero air generator 9 enters in secondary dilution chamber 3 body can dilute flue gas, and can prevent particle from sticking in its front end side wall, secondary dilution chamber 3 is provided with escape pipe, escape pipe is provided with variable valve, and unnecessary gas can be drained by escape pipe.
As shown in Figure 1, sampling thief 5 is positioned at the bottom of chamber 4 and is communicated with its inside, sampling thief 5 is by cyclone separator 51, film holder 52 and sampling pump 53 are in series, the air intake opening place of sampling pump 53 is provided with mass flow controller 13, cyclone separator 51 is communicated with chamber 4, sampling thief 5 is at least one and is evenly arranged on the bottom of chamber 4, the side of chamber 4 is also provided with multiple expansion interface, multiple sampling instrument can be set up by expansion interface, the top of chamber 4 is also provided with relief port, relief port is provided with filtrator 16, filtrator 16 is high efficiency particulate air filter.
Preferably, circulating pipe 6 is at least one, multiple circulating pipe 6 is all connected with circulating air pump 7, the circulating current that multiple circulating pipe 6 is formed can cover the madial wall of one-level dilution chamber, circulating pipe 6 is positioned at circulating air pump 7 porch and is provided with mass flow controller, thermometer, hygrometer and pressure gauge, draft tube is provided with mass flow controller and thermometer, pitot tube is provided with thermometer, pressure gauge and hygrometer, chamber is also provided with thermometer, pressure gauge and hygrometer, the mass flow controller of the present embodiment, thermometer, hygrometer is connected with data processor respectively with pressure gauge.
The using method of the expandable type pollution source particle sheath gas shielded sampling diluter in the present embodiment is as follows: during work, constant speed pipe and pitot tube are inserted in stationary source passage such as flue, gather the flue gas of stationary source discharge, collected flue gas enters the pure air mixed diluting of one-level dilution chamber and circulating current through attemperator, then flue gas flows into dilution further in secondary dilution chamber, the following simulated flue gas is in natural dilution, thermometer now on attemperator 17, pressure gauge on pitot tube, thermometer, the data recorded are transferred to data processor by the mass flow controller 13 on hygrometer and circulating pipe 6, the stationary source differential pressure signal adjustment that data processor is measured according to pressure gauge gathers flow, and make the speed of sample collection identical with stationary source discharge speed, realize isokinetic sampling, mass flow controller simultaneously on data processor controlled instrument and equipment discharges appropriate clean gas, simulated flue gas dilution more accurately, after flue gas enters chamber, need to leave standstill a period of time in chamber, with the nucleation of simulated flue gas particle in natural air, be separated by cyclone separator after flue gas leaves standstill and gather.
More than describing is to explanation of the present utility model, and be not the restriction to utility model, the utility model limited range is see claim, and when without prejudice to spirit of the present utility model, the utility model can do any type of amendment.
Claims (7)
1. an expandable type pollution source particle sheath gas shielded sampling diluter, comprise isokinetic sampling's device, the one-level dilution chamber be connected successively with described isokinetic sampling's device, secondary dilution chamber, chamber and sampling thief, described isokinetic sampling's device comprises constant speed pipe, be fixed on the pitot tube on described constant speed pipe, mass flow controller and data processor, one end of described constant speed pipe such as to be provided with at the kinetic head, one end is connected with described one-level dilution chamber by breather line in addition, described pitot tube and mass flow controller are connected with described data processor respectively, it is characterized in that: described one-level dilution chamber outside is also provided with the multiple circulating pipes for washing away described one-level dilution chamber inwall, one end of described circulating pipe is connected to described one-level dilution chamber inlet end, the other end is connected to the outlet side of described one-level dilution chamber, described circulating pipe is also provided with circulating air pump, gas in described circulating pipe under the effect of circulating air pump at described circulating pipe and one-level dilution chamber internal circulation flow, described one-level dilution chamber is connected with described secondary dilution chamber by advection pipe, one end of described advection pipe is communicated with described one-level dilution chamber, one end is taper gas outlet in addition, described taper gas outlet is communicated in described secondary dilution chamber, described advection pipe outer cover is connected to outer tube, described outer tube and advection pipe are clearance fit, described outer tube one end is with the taper gas outlet of described advection pipe same shape and is communicated with described secondary dilution chamber, one end is connected to zero air generator in addition, described secondary dilution chamber inlet end outer wall is also provided with multiple draft tube, described draft tube one end is communicated with described secondary dilution chamber by multiple air admission hole, one end is communicated with described zero air generator in addition.
2. expandable type pollution source particle sheath gas shielded sampling diluter according to claim 1; it is characterized in that: described multiple circulating pipe is all connected with described circulating air pump; described circulating pipe is positioned at described circulating air pump intake place and is provided with mass flow controller, thermometer, hygrometer and pressure gauge; described draft tube is also provided with mass flow controller, and described mass flow controller, thermometer, hygrometer and pressure gauge are connected with described data processor respectively.
3. expandable type pollution source particle sheath gas shielded sampling diluter according to claim 2, is characterized in that: described secondary dilution chamber is provided with escape pipe, and described escape pipe is provided with variable valve, described advection pipe is also provided with thermometer.
4. the expandable type pollution source particle sheath gas shielded sampling diluter according to claim 1,2 or 3; it is characterized in that: described breather line is provided with attemperator; described attemperator is provided with thermometer, and described thermometer is connected with described data processor.
5. expandable type pollution source particle sheath gas shielded sampling diluter according to claim 4; it is characterized in that: described sampling thief is positioned at the bottom of described chamber and is communicated with its inside; described sampling thief is in series by cyclone separator, film holder and sampling pump; the air intake opening place of described sampling pump is provided with mass flow controller, and described cyclone separator is communicated with described chamber.
6. expandable type pollution source particle sheath gas shielded sampling diluter according to claim 5; it is characterized in that: described pitot tube is provided with thermometer, pressure gauge and hygrometer; described chamber is also provided with thermometer, pressure gauge and hygrometer, and described thermometer, pressure gauge and hygrometer are connected with described data processor respectively.
7. expandable type pollution source particle sheath gas shielded sampling diluter according to claim 6; it is characterized in that: described sampling thief is at least one and is evenly arranged on the bottom of described chamber; the side of described chamber is also provided with multiple expansion interface; the top of described chamber is also provided with relief port, and described relief port is provided with filtrator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420635347.9U CN204177643U (en) | 2014-10-29 | 2014-10-29 | Expandable type pollution source particle sheath gas shielded sampling diluter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420635347.9U CN204177643U (en) | 2014-10-29 | 2014-10-29 | Expandable type pollution source particle sheath gas shielded sampling diluter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104677700A (en) * | 2015-03-17 | 2015-06-03 | 天津市环境监测中心 | Sampling system suitable for sampling fine particles in fixed-source droplet-containing flue gas |
| CN106226131A (en) * | 2016-09-19 | 2016-12-14 | 中国石油大学(华东) | The sampling system of a kind of volatile organic matter in sewage and the method for sampling thereof |
-
2014
- 2014-10-29 CN CN201420635347.9U patent/CN204177643U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104677700A (en) * | 2015-03-17 | 2015-06-03 | 天津市环境监测中心 | Sampling system suitable for sampling fine particles in fixed-source droplet-containing flue gas |
| CN104677700B (en) * | 2015-03-17 | 2018-02-13 | 天津市环境监测中心 | The sampling system that fine particle gathers a kind of flue gas containing drop suitable for stationary source |
| CN106226131A (en) * | 2016-09-19 | 2016-12-14 | 中国石油大学(华东) | The sampling system of a kind of volatile organic matter in sewage and the method for sampling thereof |
| CN106226131B (en) * | 2016-09-19 | 2023-08-18 | 中国石油大学(华东) | Sampling system and sampling method for volatile organic compounds in sewage |
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