CN205317651U - Portable long path cell - Google Patents
Portable long path cell Download PDFInfo
- Publication number
- CN205317651U CN205317651U CN201620020510.XU CN201620020510U CN205317651U CN 205317651 U CN205317651 U CN 205317651U CN 201620020510 U CN201620020510 U CN 201620020510U CN 205317651 U CN205317651 U CN 205317651U
- Authority
- CN
- China
- Prior art keywords
- plano
- convex lens
- long path
- beam condensing
- portable long
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 241000219739 Lens Species 0.000 claims description 21
- 210000000695 crystalline len Anatomy 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 8
- 239000010453 quartz Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 14
- 238000012544 monitoring process Methods 0.000 abstract description 13
- 239000007789 gas Substances 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003546 flue gas Substances 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 abstract 3
- 210000005056 cell body Anatomy 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
- 230000007306 turnover Effects 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 7
- 239000000126 substance Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000004611 spectroscopical analysis Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 239000004830 Super Glue Substances 0.000 description 1
- 230000004447 accommodation reflex Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003822 preparative gas chromatography Methods 0.000 description 1
- 238000011137 process chromatography Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/031—Multipass arrangements
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optical Measuring Cells (AREA)
Abstract
The utility model provides a portable long path cell, it includes rectangular absorption cell body, beam condensing unit, reflect meter and business turn over gas connect, the beam condensing unit is including setting up in the incident end and the exit end that absorb pool side wall, the reflect meter sets up in the internal portion of absorption cell, and the reflect meter includes prism and plano -convex lens, and a plurality of prisms correspond the reflected light path that sets up constitution light in proper order each other, and the inboard of every prism sets up two plano -convex lens side by side. Above -mentioned absorption cell makes the incident light reach longer optical distance through multiple reflection through the prism of mutually supporting and plano -convex lens, uses the concentration of the real -time on -line monitoring flue gas of spectrum method realization, has simple structure, characteristics that measurement accuracy is high.
Description
Technical field
The utility model relates to optical technical field, the cuvette that particularly a kind of spectroscopic analysis uses.
Background technology
Coal-burning power plant provide electric power bring serious problem of environmental pollution simultaneously. The SO of its discharge2, oxynitride, COXWith the essential substance that flue dust is atmosphere pollution. SO2Can generate at respiratory tract after entering human body and there are corrosive acidic substance, human body is produced harm. The main component of oxynitride is for being NO, and it is easily oxidized to NO in atmosphere2, and NO a small amount of in air2Photo-chemical smog can be brought out, NO2Also respiratory system can be damaged and eyes can be stimulated. In order to Control pollution gas purging, in on-line real time monitoring air, the content of pollutent is essential measure.
The Monitoring techniques of dusty gas mainly contains chemical method and optics method. Wherein chemical method mainly comprises thermocatalysis method, electrochemical process and vapor-phase chromatography etc., and these methods are difficult to realize on-line monitoring, are generally only limited to spot measurement, and failure rate height, it is necessary to regular maintenance upgrades. By contrast, optical means particularly spectroscopy measurements method can meet the requirement of on-line monitoring, the advantage such as there is measuring accuracy height, good stability, cost is low, simple to operate, maintenance is little, and multiple gases composition can be monitored simultaneously. Therefore, adopt spectroscopic method that gas pollutant is analyzed the main developing direction becoming the Monitoring techniques that discharges pollutants.
The important step of spectroscopy measurements is gas absorption, it is necessary to carry out in certain cuvette. The material of cuvette, stopping property and monitoring result is all had an impact by the characteristics such as the absorption of light. Most dusty gas needing monitoring is all lower concentration material, its concentration generally lower than ppm magnitude even ppb magnitude, for the concentration adopting ultraviolet, infrared spectroscopy monitoring gas, it may also be useful to common cuvette is difficult to reach detection requirement.
Practical novel content
Technical problem to be solved in the utility model is the defect overcoming prior art, a kind of portable long path cell is provided, bevelled mirror and plano-convex lens by cooperatively interacting make incident light reach longer light path through repeatedly reflection, thus realize the concentration of application of spectral method real time on-line monitoring flue gas, have the advantages that structure is simple, measuring accuracy is high.
Technical problem of the present utility model realizes with following technical proposals:
A kind of portable long path cell, it comprises rectangular cuvette body, beam condensing unit, reflection unit and enters air outlet adapter, and described beam condensing unit comprises the incidence end being arranged at cuvette body sidewall and outgoing end; Described reflection unit is arranged on that cuvette body is inner, and reflection unit comprises bevelled mirror and plano-convex lens, some pieces of bevelled mirrors successively mutually correspondence the reflection light path forming light is set, be arranged side by side two plano-convex lenss inside every block bevelled mirror.
Above-mentioned portable long path cell, described beam condensing unit is separately fixed in polyfluortetraethylene pipe, and polyfluortetraethylene pipe and cuvette body are threaded connection, and junction arranges sealing rubber ring.
Above-mentioned portable long path cell, described bevelled mirror is the cross section that quartz material is made is the tri-prismoid at isosceles right angle, and two square edges are reflection limit, and reflectance coating is posted in the outside of square edge.
Above-mentioned portable long path cell, described plano-convex lens is the quartz lens of JGS1.
The utility model adopts multiple bevelled mirror and plano-convex lens mutually to combine, light repeatedly reflects the light path reaching longer in cuvette, through repeatedly reflect focalization, gas can fully be absorbed in this cuvette, thus improve measuring accuracy to realize the detection of low concentration pollution gas, also change light path by the number of combinations accommodation reflex number of times of increase bevelled mirror and plano-convex lens long, thus realize the detection of different pollution level. It is applicable to daily real-time online environmental monitoring and emergency monitoring, for discharging pollutants Monitoring techniques and improve Air quality there is important meaning. The utility model have structure simple, easy to operate, be convenient to features such as carrying.
Multiple bevelled mirror is adopted to reflect the incident light, and lay plano-convex lens on the travel path of light, avoid light one way when longer, transmitting procedure occurs the Divergent Phenomenon of light, to reach the object of light collimation, thus the loss of energy is dropped to minimum. Adopt polyfluortetraethylene pipe to be threaded cuvette pond body, ensure that light all enters cuvette. Sealing rubber ring is installed in threaded connection place between polyfluortetraethylene pipe and cuvette pond, makes cuvette pond form an air chamber closed completely, and closed performance is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic diagram of the utility model plano-convex lens.
In figure, each list of reference numerals is: 1, outgoing end, 2, cuvette body, 3, plano-convex lens, 4, bevelled mirror, 5, acrylic base plate, 6, sealing rubber ring, 7, enter air outlet adapter, 8, incidence end.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, the utility model comprises cuvette body 2, beam condensing unit, reflection unit and enters air outlet adapter 7. Described cuvette body 2 is rectangular shape, is made up of by seccotine is bonding mutually six pieces of acrylic boards, and acrylic board is through laser cutting neat in edge, accurately, during bonding, the gap of adjacent acrylic board is minimum so that it is the air chamber sealing performance of formation is good. Described beam condensing unit comprises incidence end 8 and outgoing end 1, they are separately fixed in polyfluortetraethylene pipe, two polyfluortetraethylene pipes are arranged on the sidewall of cuvette body 2 respectively, polyfluortetraethylene pipe is connected by screw thread with cuvette, sealing rubber ring 6 is set in the junction of screw thread, ensures the sealing property of cuvette.
It is inner that described reflection unit is arranged on cuvette body 2, it comprises four pieces of bevelled mirrors 4 and eight pieces of plano-convex lenss 3, bevelled mirror 4 and plano-convex lens 3 calculate successively correspondence mutually through precision and arrange the reflection light path forming light, and four pieces of bevelled mirrors are divided into two groups to be arranged on respectively on the acrylic base plate 5 being positioned at cuvette body 2 two ends. Acrylic base plate 5 is fixed on cuvette bottom surface, and for supporting bevelled mirror 4, acrylic base plate 5 is connected by super glue with bevelled mirror 4, reliably firm. Described bevelled mirror 4 is the tri-prismoid at the isosceles right angle adopting quartz material, and the bottom surface of triangular prism is plane, is benchmark during installation taking bottom surface. Two square edges of bevelled mirror are reflection limit, and reflectance coating is posted in the outside of square edge. Incident beam penetrates from base through the reflection of two square edges after entering from the base of bevelled mirror. The inner side of each bevelled mirror 4 is arranged side by side two plano-convex lenss 3, corresponds respectively to incident beam and the outgoing light of bevelled mirror. The convex surface of plano-convex lens 3 is relative with bevelled mirror 4, for the light dispersed in aggregate transmission process, and condensing incident light gets up to pass to next light path after bevelled mirror reflects. Described plano-convex lens 3 adopts material to be the quartz lens of JGS1, and quartz material has good transmitance at UV-light 200-290nm wave band, it is possible to drop to minimum by the loss of light intensity on material.
Two polyfluortetraethylene pipes have into air outlet adapter 7, described in enter air outlet adapter 7 for diameter be the through hole of 6mm, for connecting external air source tracheae.
Hereinafter working process of the present utility model is described further:
During detection, being placed on experiment porch by parallel for cuvette body 2, preventing light path generation inclination from causing absorbing pool gas can not absorb completely, and the air outlet adapter 7 that enters of two Φ 6 connects gas source and exhaust chest respectively. The incidence end 8 of beam condensing unit connects light source, outgoing end 1 docks analyser, after installing, open xenon source, light is injection after the repeatedly reflection of bevelled mirror 4 and plano-convex lens 3 in cuvette, received by monochromatic analysis instrument by the polyfluortetraethylene pipe of outgoing end 1, send into computer after being received by data acquisition unit and process.
Claims (4)
1. a portable long path cell, it comprises rectangular cuvette body (2), beam condensing unit, reflection unit and enters air outlet adapter (7), and described beam condensing unit comprises the incidence end (8) and outgoing end (1) that are arranged at cuvette body (2) sidewall; It is characterized in that, it is inner that described reflection unit is arranged on cuvette body (2), reflection unit comprises bevelled mirror (4) and plano-convex lens (3), some pieces of bevelled mirrors (4) successively mutually correspondence the reflection light path forming light is set, every block bevelled mirror (4) inner side is arranged side by side two plano-convex lenss (3).
2. portable long path cell according to claim 1, it is characterised in that, described beam condensing unit is separately fixed in polyfluortetraethylene pipe, and polyfluortetraethylene pipe and cuvette body (2) are threaded connection, and junction arranges sealing rubber ring (6).
3. portable long path cell according to claim 2, it is characterised in that, described bevelled mirror (4) is the tri-prismoid that cross section that quartz material is made is isosceles right angle, and two square edges are reflection limit, and reflectance coating is posted in the outside of square edge.
4. portable long path cell according to claim 3, it is characterised in that, the quartz lens that described plano-convex lens (3) is JGS1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620020510.XU CN205317651U (en) | 2016-01-11 | 2016-01-11 | Portable long path cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620020510.XU CN205317651U (en) | 2016-01-11 | 2016-01-11 | Portable long path cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205317651U true CN205317651U (en) | 2016-06-15 |
Family
ID=56202037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620020510.XU Expired - Fee Related CN205317651U (en) | 2016-01-11 | 2016-01-11 | Portable long path cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205317651U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644068A (en) * | 2016-12-30 | 2017-05-10 | 聚光科技(杭州)股份有限公司 | Long-optical-path optical system |
| CN107421897A (en) * | 2017-06-13 | 2017-12-01 | 上海森谱科技有限公司 | A kind of single light source double suction receives pond gas phase molecular absorption spectrometer |
| CN108072612A (en) * | 2016-11-07 | 2018-05-25 | 云南师范大学 | A kind of compact variable light path gas sample cell |
| CN109883973A (en) * | 2018-06-01 | 2019-06-14 | 南京安荣信电子科技有限公司 | A kind of ultraviolet flue gas analyzer of total space coupling optical path |
| WO2019148925A1 (en) * | 2018-02-01 | 2019-08-08 | 深圳海纳光科技有限公司 | Four right-angle reflectors-based optical path length increasing system |
| CN110108642A (en) * | 2019-06-04 | 2019-08-09 | 青岛众瑞智能仪器有限公司 | A kind of total reflection White pond |
| CN110927842A (en) * | 2019-12-16 | 2020-03-27 | 中国计量科学研究院 | Spectrum absorber |
| CN112630152A (en) * | 2020-12-18 | 2021-04-09 | 中国科学院广州能源研究所 | System for on-line measuring methane content in marsh gas pipeline |
-
2016
- 2016-01-11 CN CN201620020510.XU patent/CN205317651U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072612A (en) * | 2016-11-07 | 2018-05-25 | 云南师范大学 | A kind of compact variable light path gas sample cell |
| CN106644068A (en) * | 2016-12-30 | 2017-05-10 | 聚光科技(杭州)股份有限公司 | Long-optical-path optical system |
| CN107421897A (en) * | 2017-06-13 | 2017-12-01 | 上海森谱科技有限公司 | A kind of single light source double suction receives pond gas phase molecular absorption spectrometer |
| WO2019148925A1 (en) * | 2018-02-01 | 2019-08-08 | 深圳海纳光科技有限公司 | Four right-angle reflectors-based optical path length increasing system |
| CN109883973A (en) * | 2018-06-01 | 2019-06-14 | 南京安荣信电子科技有限公司 | A kind of ultraviolet flue gas analyzer of total space coupling optical path |
| CN110108642A (en) * | 2019-06-04 | 2019-08-09 | 青岛众瑞智能仪器有限公司 | A kind of total reflection White pond |
| CN110927842A (en) * | 2019-12-16 | 2020-03-27 | 中国计量科学研究院 | Spectrum absorber |
| CN112630152A (en) * | 2020-12-18 | 2021-04-09 | 中国科学院广州能源研究所 | System for on-line measuring methane content in marsh gas pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20180111 |