CN203798704U - Novel direct-reading type dust concentration measuring instrument verification and calibration device - Google Patents
Novel direct-reading type dust concentration measuring instrument verification and calibration device Download PDFInfo
- Publication number
- CN203798704U CN203798704U CN201420209999.6U CN201420209999U CN203798704U CN 203798704 U CN203798704 U CN 203798704U CN 201420209999 U CN201420209999 U CN 201420209999U CN 203798704 U CN203798704 U CN 203798704U
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- Prior art keywords
- air
- dust concentration
- air duct
- electronic flow
- dust
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- 239000000428 dust Substances 0.000 title claims abstract description 51
- 239000003570 air Substances 0.000 claims abstract description 66
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000000875 corresponding Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract 2
- 238000000034 methods Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 206010035653 Pneumoconiosis Diseases 0.000 description 1
- 238000010521 absorption reactions Methods 0.000 description 1
- 230000001276 controlling effects Effects 0.000 description 1
- 201000010099 diseases Diseases 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007921 sprays Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Abstract
Description
Technical field
The utility model relates to a kind of calibrating apparatus of dust concentration tester, is specifically related to a kind of novel direct-reading dust concentration measuring instrument calibrating apparatus.
Background technology
Dust refers to and is suspended in airborne consubstantiality particulate, is one of principal element keeping global warming, and dust too much or very few in atmosphere all will produce disastrous effect to environment.But in live and work, industrial dust is the natural enemy of human health, be the one of the main reasons of bringing out various diseases, particularly Mine Dust, serious harm workman's is healthy on the one hand, causes workman to suffer from pneumoconiosis; The danger of the too high blast that also lies dormant of dust concentration on the other hand.The annual casualties quantity causing because of dust disaster is very big, has also caused huge economic loss to country., need to monitor dust concentration for the strict dust concentration of controlling this, the equipment using is dust concentration tester, and the therefore quality of measuring instrument and accuracy is that the maximum of effectively measuring dust concentration ensures.
That dust atmosphere is set in air duct to the calibrating of dust concentration monitor at present, utilize dust concentration tester and a set of verification system to measure dust concentration simultaneously, again both are contrasted, whether thereby it is qualified to examine and determine this dust concentration tester, the calibrating of conventional dust concentration tester and the controllability of calibrating installation are poor, operate comparatively complicated, the accuracy of impact calibrating.
Utility model content
In order to address the above problem, the utility model proposes a kind of novel direct-reading dust concentration measuring instrument calibrating apparatus, utilize the sampling time of electronic flow-meter control sampling thief, thereby ensure that the critical saturated sampling thief before of filter membrane stops sampling, and, electronic flow-meter can directly read the volume of dust, has saved calculation procedure, has fully ensured the calibrating accuracy of dust concentration tester.
The utility model solves the technical scheme that its technical matters adopts: a kind of novel direct-reading dust concentration measuring instrument calibrating apparatus, comprise cylindric dust air duct, and one end of described air duct is provided with horn-like air inlet, and air inlet outside is provided with to dirt device; The other end sealing of described air duct, and centrifugal fan is installed, the position that the interior distance air inlet of air duct is 3～4 meters is made as test section; Described air duct sidewall, the position that is positioned at test section is provided with the placement mouth that can put into dust concentration tester, places mouth and is provided with hermatic door; This calibrating apparatus also comprises standard sample device and the electronic flow-meter of tape timer, described electronic flow-meter is connected with the circuit of standard sample device, the sampling head of the sensor of electronic flow-meter and standard sample device is located at the position that is positioned at test section in air duct, and sampling head is provided with filter membrane; In air duct, be provided with air velocity transducer, air velocity transducer is connected with the control circuit of centrifugal fan, controls the rotating speed of blower fan.
Described is that pressurized air is sent out dirt device to dirt device, and pressurized air is sent out the air inlet of sending out the corresponding air duct of dirt mouth of dirt device.
The beneficial effects of the utility model are: a kind of novel direct-reading dust concentration measuring instrument calibrating apparatus, utilize the sampling time of electronic flow-meter control sampling thief, thereby ensure filter membrane critical saturated between sampling thief stop sampling, and, electronic flow-meter can directly read the volume of dust, save calculation procedure, fully ensured the calibrating accuracy of dust concentration tester.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing 1 is a kind of structural representation of novel direct-reading dust concentration measuring instrument calibrating apparatus.
In figure, 1. to dirt device, 2. air duct, 3. centrifugal fan, 4. places mouth, 5. standard sample device, 6. electronic flow-meter, 7. dust concentration tester, 8. air velocity transducer.
Embodiment
In the accompanying drawings, a kind of novel direct-reading dust concentration measuring instrument calibrating apparatus, comprises cylindric dust air duct 2, and one end of described air duct 2 is provided with horn-like air inlet, and air inlet outside is provided with to dirt device 1; The other end sealing of described air duct 2, and centrifugal fan 3 is installed, the interior position apart from 3～4 meters of air inlets of air duct 2 is made as test section; Described air duct 2 sidewalls, the position that is positioned at test section is provided with the placement mouth 4 that can put into dust concentration tester 7, places mouth 4 and is provided with hermatic door; This calibrating apparatus also comprises standard sample device 5 and the electronic flow-meter 6 of tape timer, described electronic flow-meter 6 is connected with the circuit of standard sample device 7, the sampling head of the sensor of electronic flow-meter 6 and standard sample device 5 is located at the position that is positioned at test section in air duct 2, and sampling head is provided with filter membrane; In air duct 2, be provided with air velocity transducer 8, air velocity transducer 8 is connected with the control circuit of centrifugal fan 3, controls the rotating speed of blower fan.
Describedly send out dirt device to dirt device 1 for pressurized air, pressurized air is sent out the air inlet of sending out the corresponding air duct 2 of dirt mouth of dirt device.
Using method of the present utility model is: open centrifugal fan 3, send out dirt device spray into dust by sending out dirt mouth to air duct 2 with even speed by pressurized air, now the wind speed in air duct 2 is controlled at 1.5m/s left and right, forms stable dust atmosphere.After dust concentration in air duct 2 is stable, (quality is m on sampling head, to put into load weighted filter membrane 1), unlocking electronic flowmeter 6 and standard sample device 5 simultaneously, sampling thief carries out dust sampling, electronic flow-meter 6 is measured dust volume and shows simultaneously, the numerical value of measuring when electronic flow-meter 6 arrives its setting upper in limited time, electronic flow-meter 6 quits work, and standard sample device 5 is quit work.The filter membrane taking off on sampling head is weighed, and quality is (m 2), obtain sampling time t by timer, obtain sampling volume v by electronic flow-meter 6; Then use formula c 2=(m 2-m 1)/v calculates the sampled concentrations of standard sample device 5.Put into tested dust concentration tester 7 by placing mouth 4 simultaneously, read dust instrument indicating value c now 1, contrast c 2and c 1can find out that whether dust concentration tester 7 exists error, uses formula can draw error amount.
In above operating process, can directly read dust volume by electronic flow-meter 6, without calculating separately, save the time, improve its accuracy; Electronic flow-meter 6 plays control action to the start-stop of standard sample device 5 simultaneously.Known, if the absorption of filter membrane filter reaches capacity, will make testing result produce error, and electronic flow-meter 6 makes filter membrane before reaching capacity, i.e. the work of stopping criterion sampling thief 5, has avoided the generation of this situation, reduce error, can effectively ensure the accuracy of calibrating.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209999.6U CN203798704U (en) | 2014-04-28 | 2014-04-28 | Novel direct-reading type dust concentration measuring instrument verification and calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209999.6U CN203798704U (en) | 2014-04-28 | 2014-04-28 | Novel direct-reading type dust concentration measuring instrument verification and calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203798704U true CN203798704U (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420209999.6U CN203798704U (en) | 2014-04-28 | 2014-04-28 | Novel direct-reading type dust concentration measuring instrument verification and calibration device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203798704U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237095A (en) * | 2014-10-13 | 2014-12-24 | 北京市环境保护科学研究院 | Rising dust discharge measurement system and method in road sweeping process |
| CN104535464A (en) * | 2014-12-04 | 2015-04-22 | 苏州国环环境检测有限公司 | Apparatus for detecting particles in air |
| CN104596904A (en) * | 2015-01-30 | 2015-05-06 | 武汉四方光电科技有限公司 | Measurement method for dust concentration of laser dust sensor |
| CN105865994A (en) * | 2016-04-22 | 2016-08-17 | 苏州翰霖汽车科技有限公司 | Calibration device for PM2.5 sensors and calibrating method thereof |
| CN106497782A (en) * | 2016-09-30 | 2017-03-15 | 中国科学院深圳先进技术研究院 | A kind of air microorganism sampling device |
| CN106644965A (en) * | 2016-12-05 | 2017-05-10 | 锦州海伯伦汽车电子有限公司 | Batch calibration detection apparatus and method of dust sensor |
| CN109060456A (en) * | 2018-07-13 | 2018-12-21 | 中国环境科学研究院 | A kind of caliberating device and method of fixed source diluting channel sample device |
| CN109142178A (en) * | 2018-10-26 | 2019-01-04 | 常熟市德虞矿山机电有限公司 | A kind of calibration method of direct-reading dust concentration detector |
-
2014
- 2014-04-28 CN CN201420209999.6U patent/CN203798704U/en not_active IP Right Cessation
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237095A (en) * | 2014-10-13 | 2014-12-24 | 北京市环境保护科学研究院 | Rising dust discharge measurement system and method in road sweeping process |
| CN104535464A (en) * | 2014-12-04 | 2015-04-22 | 苏州国环环境检测有限公司 | Apparatus for detecting particles in air |
| CN104596904A (en) * | 2015-01-30 | 2015-05-06 | 武汉四方光电科技有限公司 | Measurement method for dust concentration of laser dust sensor |
| CN104596904B (en) * | 2015-01-30 | 2017-05-10 | 武汉四方光电科技有限公司 | Measurement method for dust concentration of laser dust sensor |
| CN105865994A (en) * | 2016-04-22 | 2016-08-17 | 苏州翰霖汽车科技有限公司 | Calibration device for PM2.5 sensors and calibrating method thereof |
| CN106497782A (en) * | 2016-09-30 | 2017-03-15 | 中国科学院深圳先进技术研究院 | A kind of air microorganism sampling device |
| CN106497782B (en) * | 2016-09-30 | 2019-03-01 | 中国科学院深圳先进技术研究院 | A kind of air microorganism sampling device |
| CN106644965A (en) * | 2016-12-05 | 2017-05-10 | 锦州海伯伦汽车电子有限公司 | Batch calibration detection apparatus and method of dust sensor |
| CN106644965B (en) * | 2016-12-05 | 2020-05-26 | 锦州海伯伦汽车电子有限公司 | Device and method for batch calibration detection of dust sensors |
| CN109060456A (en) * | 2018-07-13 | 2018-12-21 | 中国环境科学研究院 | A kind of caliberating device and method of fixed source diluting channel sample device |
| CN109060456B (en) * | 2018-07-13 | 2020-06-16 | 中国环境科学研究院 | Calibration device and method for fixed source dilution channel sampler |
| CN109142178A (en) * | 2018-10-26 | 2019-01-04 | 常熟市德虞矿山机电有限公司 | A kind of calibration method of direct-reading dust concentration detector |
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| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20160428 |