CN201917508U - Scattering dust measurement instrument - Google Patents
Scattering dust measurement instrument Download PDFInfo
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- CN201917508U CN201917508U CN2010206625649U CN201020662564U CN201917508U CN 201917508 U CN201917508 U CN 201917508U CN 2010206625649 U CN2010206625649 U CN 2010206625649U CN 201020662564 U CN201020662564 U CN 201020662564U CN 201917508 U CN201917508 U CN 201917508U
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Abstract
The utility model relates to a dust measurement instrument, particularly to structural improvement on a scattering dust measurement instrument. The scattering dust measurement instrument is characterized by comprising a laser scattering dust measuring device (1), a filtering device (2), a primary shunt device (3) and a secondary shunt device (4), wherein the filtering device (2), the primary shunt device (3) and the secondary shunt device (4) are connected with the laser scattering dust measuring device (1) respectively; and the filtering device (2) is also connected with a pumping system (5). Therefore, the utility model has the following advantages: firstly, the design is reasonable, the structure is simple, the noise is smaller, and the use is practical; secondly, dust to be measured can be synchronously calibrated; thirdly, water vapor in the dust before detection can be removed, so that the accuracy of detection is improved; and fourthly, the flow velocity of the measured dust into a measuring chamber can be controlled, so that the uniform flow velocity measurement is achieved, and the measurement accuracy is improved.
Description
Technical field
The utility model relates to a kind of dust gauge, especially relates to a kind of structural improvement to the scattering dust gauge.
Background technology
Soot dust granule substrate concentration in the flue gas of industrial pollution source emission is carried out the on-the-spot on-line continuous most optics opacity method that adopts of monitoring automatically both at home and abroad now, its principle is that a branch of light is injected flue, because the absorption and the scattering of particle, the light intensity decay, its light intensity weakened after light beam passed flue dust, when combustion medium is stablized, flue length is fixed, weakening of its light intensity is relevant with flue endoparticle substrate concentration, thereby can determine the soot dust granule substrate concentration by the variation of light intensity before and after the flue.It is convenient to measure the soot dust granule substrate concentration with the opaque method of optics, but certain restriction is arranged, when the concentration of soot dust granule thing is too high or too low, the sensitivity of measuring is not high, and is high to measuring the requirement of light path collimation, otherwise error is very big, it is time-consuming that complexity is installed, and is subjected to vibration effect very big.Along with promoting the use of of high-effective dust-removing device, the demand that detects the low concentration flue dust progressively increases, for detecting the efficiency of dust collection of fly-ash separator, the user that concentration detection apparatus is installed before and after the fly-ash separator is also progressively increasing, be high concentration like this before the dedusting, be low concentration after the dedusting, use optics opacity method to measure in some occasions and just be restricted.Therefore people have developed and have adopted the scattered light principle to detect the device of soot dust granule substrate concentration.The advantage of this class pick-up unit is that the length of testing result and light path is irrelevant, can not only be real-time, online, continuous measurement, and also easy for installation.Principle is that a branch of light is injected flue, light beam and soot dust granule thing interact and produce scattering, the power of scattered light is directly proportional with total scatter cross-section, when the soot dust granule substrate concentration raises, the total scatter cross-section of soot dust granule thing increases, scattered light strengthens, and can obtain the concentration of soot dust granule thing by the power of measuring scattered light, and experiment test: resolution can reach 0.02mg/m
3, minimum measurement range 0-2mg/m
3But existing scattered light particle concentration pick-up unit, the soot dust granule that enters measurement range on the one hand is not of uniform size, influences measuring accuracy, on the other hand, after adopting optical detection apparatus to detect, can not recheck, promptly can not demarcate synchronously this testing result to it; Have, the existing flue dust of measuring directly enters in the measurement mechanism, because flue dust has steam, to a certain degree also can influence measuring accuracy again; At last, existing dust gauge is difficult to control for the flow velocity that tested flue dust enters measuring chamber, and flow velocity may be sometimes fast and sometimes slow, thereby influence measurement result.
The utility model content
The utility model mainly is to solve existing in prior technology to enter the soot dust granule of measurement range not of uniform size, influences the technical matters of measuring accuracy etc.; A kind of energy control detection grain size is provided, thereby has improved the scattering dust gauge of measuring accuracy.
It is after solving existing in prior technology and adopting optical detection apparatus to detect, can not recheck it that the utility model also has a purpose, i.e. the technical matters that can not demarcate synchronously etc. this testing result; A kind of scattering dust gauge that can demarcate synchronously the survey flue dust is provided.
It is to solve the existing flue dust of measuring of existing in prior technology directly to enter in the measurement mechanism that the utility model has a purpose again, because flue dust has steam, to a certain degree also can influence the technical matters of measuring accuracy etc.; Providing a kind of can remove the steam in the flue dust before detecting earlier, thereby improves the sharp dust gauge of penetrating of accuracy of detection.
It is to solve the existing dust gauge of existing in prior technology to be difficult to control for the flow velocity that tested flue dust enters measuring chamber that the utility model also has a purpose, and flow velocity may be sometimes fast and sometimes slow, thereby influences the technical matters of measurement result etc.; Provide a kind of and can control the flow velocity that tested flue dust enters measuring chamber, reached uniform flow and measure, improved the scattering dust gauge of measuring accuracy.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals:
A kind of scattering dust gauge is characterized in that, comprises laser light scattering dust measuring device and the filtration unit that links to each other with laser light scattering dust measuring device respectively and one-level part flow arrangement and secondary part flow arrangement, also is connected with extract system on the described filtration unit.
At above-mentioned scattering dust gauge, described laser light scattering device comprise one measure casing and be arranged on measure laser beam emitting device, the scattered light receiving trap in the casing and be arranged on laser beam emitting device and the scattered light receiving trap between measuring chamber.
At above-mentioned scattering dust gauge, described one-level part flow arrangement comprises the cutter that at least one links to each other with above-mentioned measuring chamber by sampling pipe, described secondary part flow arrangement comprises the synchronous caliberating device that links to each other by with above-mentioned extract system, and described synchronous caliberating device also links to each other with above-mentioned measuring chamber.
At above-mentioned scattering dust gauge, described filtration unit comprises the filtrator that links to each other with above-mentioned extract system.
At above-mentioned scattering dust gauge, described extract system comprises aspiration pump and pressurestat one, pressurestat two, throttle orifice one and throttle orifice two, above-mentioned filtrator links to each other with described aspiration pump by throttle orifice one and pressurestat one successively, and above-mentioned synchronous caliberating device links to each other with described aspiration pump by throttle orifice two and pressurestat two successively.
At above-mentioned scattering dust gauge, described synchronous caliberating device adopts filter membrane box or the synchronous caliberating device of β ray or vibration balance or standard scatter plate.
At above-mentioned scattering dust gauge, it is the heating sampling pipe of 1mm-30mm that described sampling pipe adopts diameter, and described cutter adopts PM1 or PM2.5 or PM5 or PM10.
At above-mentioned scattering dust gauge, it also comprises an air purifier that connects with above-mentioned laser light scattering dust measuring device, and described air purifier and above-mentioned measuring machine shell interface are provided with clean air curtain.
Therefore, the utlity model has following advantage: 1. reasonable in design, simple in structure, the less and complete practicality of noise; 2. can demarcate synchronously the survey flue dust; 3. the steam in the flue dust before detecting can be removed earlier, thereby be improved accuracy of detection; 4. can control the flow velocity that tested flue dust enters measuring chamber, reach uniform flow and measure, improve measuring accuracy.
Description of drawings
Fig. 1 is a kind of structural principle synoptic diagram of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.Among the figure, light scattering dust measuring device 1, laser beam emitting device 101, measuring chamber 102, scattered light receiving trap 103, measurement casing 104, filtration unit 2, filtrator 201, one-level part flow arrangement 3, sampling pipe 301, cutter 302, secondary part flow arrangement 4, synchronous caliberating device 401, extract system 5, aspiration pump 501, pressurestat 1, pressurestat 2 503, throttle orifice 1, throttle orifice 2 505, air purifier 6, clean air curtain 7.
Embodiment:
A kind of scattering dust gauge, comprise laser light scattering dust measuring device 1 and the filtration unit 2 that links to each other with laser light scattering dust measuring device 1 respectively and one-level part flow arrangement 3 and secondary part flow arrangement 4, also be connected with extract system 5 on the described filtration unit 2, laser light scattering device 1 comprise one measure casing 104 and be arranged on measure laser beam emitting device 101, the scattered light receiving trap 103 in the casing 104 and be arranged on laser beam emitting device 101 and scattered light receiving trap 103 between measuring chamber 102.。
One-level part flow arrangement 3 comprises two cutters 302 that link to each other with measuring chamber 105 by sampling pipe 301, and it is the heating sampling pipe of 1mm-30mm that sampling pipe adopts diameter, and cutter 302 adopts PM1 or PM2.5 or PM5 or PM10.Secondary part flow arrangement 4 comprises the synchronous caliberating device 401 that links to each other by with above-mentioned extract system 5, and caliberating device 401 also links to each other with above-mentioned measuring chamber 105 synchronously.
Filtration unit 2 comprises the filtrator 201 that links to each other with above-mentioned extract system 5, extract system 5 comprises aspiration pump 501 and pressurestat 1, pressurestat 2 503, throttle orifice 1 and throttle orifice 2 505, above-mentioned filtrator 201 links to each other with described aspiration pump 501 by throttle orifice 1 and pressurestat 1 successively, above-mentioned synchronous caliberating device 401 links to each other with described aspiration pump 501 by throttle orifice 2 505 and pressurestat 2 503 successively, and caliberating device 401 adopts filter membrane box or the synchronous caliberating device of β ray or vibration balance or standard scatter plate synchronously.
This also is provided with an air purifier 6 that connects with laser light scattering dust measuring device 1 in an embodiment, and air purifier 6 is provided with clean air curtain 7 with above-mentioned measurement casing 104 interfaces.
In the present embodiment, partly added cutter at the sampling pipe that inserts flue, as shown in the figure, can adopt the combination in any of the cutter of PM1 or PM2.5 or PM5 or PM10, in addition, this device can be that the flue dust of 5-80L/Min carries out real-time sampling at the sample objects flow, in practical operation, sampling pipe adopts the sampling pipe of heating, can earlier detected flue dust be heated, remove moisture in the flue dust, detect entering into diffuse optical sensor 106 sensing chamber.
It should be noted that, in the present embodiment, in order to be able to control the flow velocity that tested flue dust enters measuring chamber, reach the purpose that uniform flow is measured, adopted the part flow arrangement of two-stage, be one-level part flow arrangement 3 and secondary part flow arrangement 4, one-level part flow arrangement 3 comprises two cutters 302 that link to each other with above-mentioned measuring chamber 102 by sampling pipe 301, secondary part flow arrangement 4 comprises the synchronous caliberating device 401 that links to each other by with extract system 5, caliberating device 401 also links to each other with above-mentioned measuring chamber 102 synchronously, during work, under the effect of aspiration pump 501, a tested flue dust part that enters from flue enters measuring chamber 102 and measures by the sampling pipe process, another part flue dust enters in the synchronous caliberating device 401 by secondary part flow arrangement 4 and demarcates synchronously, also reach simultaneously the purpose of second diffluence, in this device, should be noted that, the device of demarcating can adopt the filter membrane box synchronously, β ray marking apparatus, a kind of in vibration balance and the standard scatter plate all can.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used laser light scattering dust measuring device 1, laser beam emitting device 101, measuring chamber 102, scattered light receiving trap 103, measured terms such as casing 104, filtration unit 2, filtrator 201, one-level part flow arrangement 3, sampling pipe 301, cutter 302, secondary part flow arrangement 4, synchronous caliberating device 401, extract system 5, aspiration pump 501, pressurestat 1, pressurestat 2 503, throttle orifice 1, throttle orifice 2 505, air purifier 6, clean air curtain 7 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (8)
1. scattering dust gauge, it is characterized in that, comprise laser light scattering dust measuring device (1) and the filtration unit (2) that links to each other with laser light scattering dust measuring device (1) respectively and one-level part flow arrangement (3) and secondary part flow arrangement (4), also be connected with extract system (5) on the described filtration unit (2).
2. scattering dust gauge according to claim 1, it is characterized in that, described laser light scattering device (1) comprise one measure casing (104) and be arranged on measure laser beam emitting device (101), the scattered light receiving trap (103) in the casing (104) and be arranged on laser beam emitting device (101) and scattered light receiving trap (103) between measuring chamber (102).
3. scattering dust gauge according to claim 1, it is characterized in that, described one-level part flow arrangement (3) comprises that at least one passes through the cutter (302) that sampling pipe (301) links to each other with above-mentioned measuring chamber (105), described secondary part flow arrangement (4) comprises the synchronous caliberating device (401) that links to each other by with above-mentioned extract system (5), and described synchronous caliberating device (401) also links to each other with above-mentioned measuring chamber (105).
4. scattering dust gauge according to claim 2 is characterized in that, described filtration unit (2) comprises the filtrator (201) that links to each other with above-mentioned extract system (5).
5. scattering dust gauge according to claim 2, it is characterized in that, described extract system (5) comprises aspiration pump (501) and pressurestat one (502), pressurestat two (503), throttle orifice one (504) and throttle orifice two (505), above-mentioned filtrator (201) links to each other with described aspiration pump (501) by throttle orifice one (504) and pressurestat one (502) successively, and above-mentioned synchronous caliberating device (401) links to each other with described aspiration pump (501) by throttle orifice two (505) and pressurestat two (503) successively.
6. scattering dust gauge according to claim 2 is characterized in that, described synchronous caliberating device (401) adopts filter membrane box or the synchronous caliberating device of β ray or vibration balance or standard scatter plate.
7. scattering dust gauge according to claim 2 is characterized in that, it is the heating sampling pipe of 1mm-30mm that described sampling pipe adopts diameter, and described cutter (302) adopts PM1 or PM2.5 or PM5 or PM10.
8. scattering dust gauge according to claim 2, it is characterized in that, it also comprises an air purifier (6) that connects with above-mentioned laser light scattering dust measuring device (1), and described air purifier (6) is provided with clean air curtain (7) with above-mentioned measurement casing (104) interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206625649U CN201917508U (en) | 2010-12-16 | 2010-12-16 | Scattering dust measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206625649U CN201917508U (en) | 2010-12-16 | 2010-12-16 | Scattering dust measurement instrument |
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| CN201917508U true CN201917508U (en) | 2011-08-03 |
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| CN2010206625649U Expired - Lifetime CN201917508U (en) | 2010-12-16 | 2010-12-16 | Scattering dust measurement instrument |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636621A (en) * | 2012-03-31 | 2012-08-15 | 北京盈胜泰科技术有限公司 | Portable PM2.5 (Particulate Matter 2.5) monitoring equipment and method |
| CN103454194A (en) * | 2013-09-05 | 2013-12-18 | 江苏物联网研究发展中心 | PM2.5 (Particulate Matter 2.5) detection device and manufacturing method thereof |
| CN103868834A (en) * | 2014-03-14 | 2014-06-18 | 江苏华力智能科技有限公司 | Indoor-outdoor PM2.5 environment monitoring collector |
| CN105181374A (en) * | 2015-10-09 | 2015-12-23 | 绍兴文理学院 | Boiler flue gas tourmalinite purifier scattering online test board |
| CN106248628A (en) * | 2015-06-09 | 2016-12-21 | 株式会社田中电气研究所 | Light scattering formula dust concentration meter and the assay method of dust concentration |
| CN109238932A (en) * | 2018-09-21 | 2019-01-18 | 中国科学院地质与地球物理研究所 | A kind of highway engineering atmospheric environment lung particulate matter monitoring method |
-
2010
- 2010-12-16 CN CN2010206625649U patent/CN201917508U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636621A (en) * | 2012-03-31 | 2012-08-15 | 北京盈胜泰科技术有限公司 | Portable PM2.5 (Particulate Matter 2.5) monitoring equipment and method |
| CN103454194A (en) * | 2013-09-05 | 2013-12-18 | 江苏物联网研究发展中心 | PM2.5 (Particulate Matter 2.5) detection device and manufacturing method thereof |
| CN103454194B (en) * | 2013-09-05 | 2015-09-23 | 江苏物联网研究发展中心 | PM2.5 pick-up unit and manufacture method thereof |
| CN103868834A (en) * | 2014-03-14 | 2014-06-18 | 江苏华力智能科技有限公司 | Indoor-outdoor PM2.5 environment monitoring collector |
| CN106248628A (en) * | 2015-06-09 | 2016-12-21 | 株式会社田中电气研究所 | Light scattering formula dust concentration meter and the assay method of dust concentration |
| CN106248628B (en) * | 2015-06-09 | 2019-03-26 | 株式会社田中电气研究所 | Light scatters the measuring method of formula dust concentration meter and dust concentration |
| CN105181374A (en) * | 2015-10-09 | 2015-12-23 | 绍兴文理学院 | Boiler flue gas tourmalinite purifier scattering online test board |
| CN109238932A (en) * | 2018-09-21 | 2019-01-18 | 中国科学院地质与地球物理研究所 | A kind of highway engineering atmospheric environment lung particulate matter monitoring method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |
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| CX01 | Expiry of patent term |