CN202033227U - Constant speed gas distribution sampling device for atmosphere particulate matter monitoring instrument - Google Patents
Constant speed gas distribution sampling device for atmosphere particulate matter monitoring instrument Download PDFInfo
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- CN202033227U CN202033227U CN 201120142978 CN201120142978U CN202033227U CN 202033227 U CN202033227 U CN 202033227U CN 201120142978 CN201120142978 CN 201120142978 CN 201120142978 U CN201120142978 U CN 201120142978U CN 202033227 U CN202033227 U CN 202033227U
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- outer tube
- constant speed
- monitoring instrument
- speed gas
- gas distribution
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Abstract
The utility model discloses a constant speed gas distribution sampling device for an atmosphere particulate matter monitoring instrument, which comprises an outer tube (1) and a branch tube (3). An inner tube (2) is arranged in the outer tube (1), the inner tube (2) is connected with the outer tube (1) through an adapter. A gap is arranged between the upper end face of the inner tube (2) and the upper end face of the outer tube (1). The inter-interference of the two flow fields inside and outside the inner tube is reduced, sampling accuracy of the atmosphere particulate matters is improved, and accordingly measuring accuracy of the instrument is improved.
Description
Technical field
The utility model relates to a kind of gas sampling assembly that is used for the atmosphere particle monitoring instrument, and especially a kind of constant speed gas distributes sampling apparatus.
Background technology
Atmospheric particulates on-line monitoring instrument is one of important instrument in the environmental monitoring.The sampling apparatus of the Atmospheric particulates on-line monitoring instrument of Sheng Chaning in the past, only comprise outer tube and arm, when sampling, since particle be subjected to force direction inconsistent, cause the distribution of particle to change, can not simulate the actual distribution of particle in the atmosphere and sample, cause the measuring accuracy of instrument not high so the precision of sampling is not enough.The utility model for simulate particle in atmosphere actual distribution and design.
The utility model content
The technical problems to be solved in the utility model provides a kind of constant speed gas that is used for the atmosphere particle monitoring instrument and distributes sampling apparatus, realize by particle in atmosphere actual distribution and sample.
In order to solve the problems of the technologies described above, the constant speed gas that is used for the atmosphere particle monitoring instrument of the present utility model distributes sampling apparatus, comprises outer tube and arm, and interior pipe is set in the described outer tube, and interior pipe is installed together by adapter and outer tube.
As improvement of the present utility model, between the upper surface of the upper surface of interior pipe and outer tube, be provided with the gap, as the usefulness of the buffering runner of gas.
The beneficial effect of this design is embodied in: 1, reduced the phase mutual interference in inside and outside two flow fields of interior pipe.2, improved sampling precision, thereby improved the measuring accuracy of instrument Atmospheric particulates.
Description of drawings
Fig. 1 is a cut-open view of the present utility model.
Fig. 2 is a sampling air flow synoptic diagram of the present utility model.
More than Reference numeral among each figure be expressed as follows respectively:
1-outer tube, 2-interior pipe, 3-arm, 4-weighing device, 5-mass flow controller, 6-mass flow controller, 7-aspiration pump.
Embodiment
Fig. 1, Fig. 2 show concrete structure of the present utility model.Outer tube 1 and arm 3 welding, pipe 2 in being equipped with in the outer tube, interior pipe 2 is installed together by adapter and outer tube 1.Interior pipe 2 is seriations, and its internal diameter can be selected as required.Between the upper surface of the upper surface of interior pipe and outer tube, leave a segment distance H in addition, as the usefulness of the buffering runner of gas.
In said apparatus, interior pipe 2 links to each other with mass flow controller 6 air intake openings indirectly and forms the main flow gas channel; Arm 3 links to each other with mass flow controller 5 air intake openings indirectly and forms auxilliary flow gas channel; All receive on the gas access joint of aspiration pump 7 gas outlet of mass flow controller 5 and mass flow controller 6.Adjust the flow of mass flow controller 5 and mass flow controller 6, in the A section gas flow rate in the pipe 2 and interior pipe 2 are equated with gas flow rate between the outer tube 1.Like this, connect the aspiration pump power supply and just can realize the isokinetic sampling.
Claims (2)
1. a constant speed gas that is used for the atmosphere particle monitoring instrument distributes sampling apparatus, comprises outer tube and arm, and it is characterized in that: interior pipe (2) is set in the described outer tube (1), and interior pipe (2) is installed together by adapter and outer tube (1).
2. distribute sampling apparatus according to the described constant speed gas that is used for the atmosphere particle monitoring instrument of claim 1, it is characterized in that: be provided with the gap between the upper surface of the upper surface of interior pipe (2) and outer tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120142978 CN202033227U (en) | 2011-05-09 | 2011-05-09 | Constant speed gas distribution sampling device for atmosphere particulate matter monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120142978 CN202033227U (en) | 2011-05-09 | 2011-05-09 | Constant speed gas distribution sampling device for atmosphere particulate matter monitoring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033227U true CN202033227U (en) | 2011-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120142978 Expired - Fee Related CN202033227U (en) | 2011-05-09 | 2011-05-09 | Constant speed gas distribution sampling device for atmosphere particulate matter monitoring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033227U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901656A (en) * | 2012-08-21 | 2013-01-30 | 安徽蓝盾光电子股份有限公司 | Locking mechanism of sampling tube |
| CN102914455A (en) * | 2012-08-21 | 2013-02-06 | 安徽蓝盾光电子股份有限公司 | Multi-purpose sampling pipe locking device |
| CN104132831A (en) * | 2014-07-31 | 2014-11-05 | 中国环境科学研究院 | Adjustable constant speed sampling 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 |
-
2011
- 2011-05-09 CN CN 201120142978 patent/CN202033227U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901656A (en) * | 2012-08-21 | 2013-01-30 | 安徽蓝盾光电子股份有限公司 | Locking mechanism of sampling tube |
| CN102914455A (en) * | 2012-08-21 | 2013-02-06 | 安徽蓝盾光电子股份有限公司 | Multi-purpose sampling pipe locking device |
| CN104132831A (en) * | 2014-07-31 | 2014-11-05 | 中国环境科学研究院 | Adjustable constant speed sampling system |
| CN104132831B (en) * | 2014-07-31 | 2016-05-04 | 中国环境科学研究院 | Adjustable isokinetic sampling's 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20140509 |