CN207571018U - A kind of gas absorption cell light channel structure suitable for fume continuous monitoring system - Google Patents
A kind of gas absorption cell light channel structure suitable for fume continuous monitoring system Download PDFInfo
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- CN207571018U CN207571018U CN201721827789.3U CN201721827789U CN207571018U CN 207571018 U CN207571018 U CN 207571018U CN 201721827789 U CN201721827789 U CN 201721827789U CN 207571018 U CN207571018 U CN 207571018U
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Abstract
The utility model is related to a kind of gas absorption cell light channel structures suitable for fume continuous monitoring system, mainly include the inside light path component that the long light path White pond that the spherical concave mirror for including incident optical and being filled the post of the light inputting end component of collimating mirror by non-spherical lens, include the output optical fiber and fill the post of the light extraction end component of focus lamp by aspherical biconvex lens and possessed same curvature radius by three is formed is filled the post of.Collimating mirror and focus lamp are made of the higher ultraviolet fused silica glass of deep ultraviolet band transmitance, it can ensure that collimated collimated light beam will not dissipate in 500mm, spot diameter is less than 3mm after line focus, and more than 90% can be reached after setting ultraviolet enhancing aluminium film to the reflectivity of deep ultraviolet band light by being plated on concave mirror.Overcome the deficiency that beam collimation degree is poor, restriction optical path length, energy loss is big caused by structure is owed rationally in the prior art, the light channel structure of the utility model is rationally and science, reliable and stable work and accuracy of detection are high, it is a big innovation of low concentration pollution gas context of detection, there is very strong practicability.
Description
Technical field
The utility model is related to gas detection technology fields, particularly a kind of gas suitable for fume continuous monitoring system
Absorption cell light channel structure.
Background technology
There is many advantages, such as strong scalability, wide adaptation range, quilt using the detection technique of gas absorption spectra characteristic
It is widely used in the detection technique of pernicious gas.For the demand of micro low concentration pollution gasmetry, long light path measuring cell
It is a kind of effective solution, is suitably applied in the detecting instrument based on Beer-Lambert law.Long light path measuring cell
Typical structure is White pond, as shown in figure 4, being mainly made of the identical concave mirror of three pieces radius of curvature, wherein two panels is smaller, if
It puts in one end of pond body, it is a piece of larger, it is arranged on the other end of pond body, the centers of curvature of three concave mirrors respectively falls in mutual
On minute surface, by the angle of three concave mirrors of adjusting and incident ray position and angle, it can realize light between three minute surfaces
Multiple round-trip reflection, realize compared with long light path.
Most of light detection instrument on sale selects xenon source currently on the market, and thus obtained incident beam is in itself
Certain angle of divergence is there is, so the hot spot formed when being fallen on the mirror after propagating certain distance can be very big, it is anti-in this way
It penetrates mirror beam energy can not just to be reflected in full, causes to lose portion of energy, thus also limit the length of White pond list backhaul
Degree, so as to affect repeatedly turned back, increase light path realize enhance gas absorption light energy purpose；Further, since
What is mainly utilized in measurement process is 200-400nm deep ultraviolet bands light in xenon lamp, but since its wavelength is shorter, photon energy compared with
Height, and the common aluminium film plated on currently used speculum just has stronger sink effect for deep ultraviolet band light, leads
Cause reflectivity relatively low, so, a big chunk light energy will necessarily be lost during repeatedly round-trip reflection, along with by pond
Interior tested gas, the especially amount of the absorption of the polluted gas of high concentration make the spectral signal that detector finally receives can be very
Weak, the signal-to-noise ratio for detecting signal is very high, so as to influence detection sensitivity and accuracy.Therefore, the standard of collimated light beam how is improved
Straight degree reduces projected spot to be conducive to the absorptance for extending optical path length, enhancing gas, it is ensured that detection gas concentration it is accurate
Property and how to improve the reflectivity of speculum, to reduce luminous energy loss, it is ensured that improve the signal-to-noise ratio of detection signal, improve inspection
Survey sensitivity, it has also become perplex industry and the big problem for receiving much attention and all being solved in exploration at present.
Invention content
The purpose of this utility model is to overcome current gas absorption cell insufficient as existing for light channel structure aspect and cause
Beam collimation degree it is poor, be unable to the big deficiency of energy loss in relatively long distance transmission and transmit process, provide one kind can ensure that through
Collimated light beam after collimation can keep the collimation of relatively long distance, be lost convenient for expanding luminous energy in light path and reduction transmit process,
Be conducive to improve accuracy of detection, the gas absorption cell light channel structure especially suitable for fume continuous monitoring system.
The gas absorption cell light channel structure suitable for fume continuous monitoring system of the utility model is such.First,
One structure novel of design is generated with relatively high degree of collimation, just after collimation processing can be carried out to the divergent shape light beam from light source
In the collimating mirror of the collimated light beam of relatively long distance transmission, meanwhile, change the coating structure of mirror reflection surface, reflected with reducing
Absorptivity, raising reflectivity in face of dark purple band of light, reduce light beam energy loss excessive in round-trip refracting process, so as to
Ensure that tested gas fully absorbs light, improve detection accuracy.
The gas absorption cell light channel structure of the utility model mainly comprising light inputting end component, light extraction end component and is arranged on pond
Endoceliac internal light path component, wherein：Light inputting end component includes the incidence being connected with bright lamp divergent shape light beam of light source light path
Optical fiber and have the function of by divergent shape light beam of light source refractive transition be collimated light beam collimating mirror；Light extraction end component includes and will go out
The output optical fiber that the collimated light beam refractive transition penetrated is the focus lamp of emergent light spot function, is connected with spectroanalysis instrument light path；It is interior
The light path Zigzag type long light path White pond that the spherical concave mirror that portion's light path component possesses same curvature radius by three is formed is filled the post of,
The small concave mirror A of two of which is identical with the structure size of A ', is mounted on one end of pond body, big concave mirror B peaces side by side
Dress is arranged on the other end of pond body, is characterized in that：The collimating mirror is by the higher ultraviolet tekite of deep ultraviolet band transmitance
English glass is made, and having will not send out the divergent shape light beam of light source refractive transition that incident optical transmission comes at least in 500mm
The function of scattered collimated light beam, the integral type non-spherical lens being made of flat cylinder A and outer gibbosity arc plane of refraction A interconnection
Fill the post of；The focus lamp is made of the higher ultraviolet fused silica glass of deep ultraviolet band transmitance, has collimated light beam
For first refractive transition into converging beam, refocusing is transformed into diameter less than 3mm, the relatively small light spot work(received in full convenient for the output optical fiber
Can, one be made of the flat-shaped cylinder A of middle flat and the outer gibbosity arc plane of refraction B positioned at the flat-shaped cylinder A front and rear sides of middle flat
The aspherical biconvex lens of body formula is filled the post of；Concave mirror A and A ' two small and big concave mirror B described in the inside light path component
Inner concave on respectively plating be equipped with the reflectivity of deep ultraviolet band light is reached more than 90% ultraviolet enhancing aluminium film.
The utility model based on above-mentioned design is suitable for the gas absorption cell light channel structure of fume continuous monitoring system, by
It is made, has divergent shape light source of the higher ultraviolet fused silica glass of deep ultraviolet band transmitance in being employed in light inputting end
Light beam refractive transition is into the non-spherical lens of collimated light beam function that will not be dissipated at least in 500mm, instead of traditional standard
Straight mirror；It employs at light extraction end and is made of the higher ultraviolet fused silica glass of deep ultraviolet band transmitance, had directional light
For beam elder generation refractive transition into converging beam, refocusing is transformed into diameter less than 3mm, the relatively small light spot received in full convenient for the output optical fiber
The aspherical biconvex lens of function, instead of traditional focus lamp；To the concave mirror A two small described in internal light path component
And the inner concave of A ' and big concave mirror B plate set the ultraviolet enhancing aluminium for reaching more than 90% to the reflectivity of deep ultraviolet band light respectively
Film, instead of traditional common aluminium film.So make effectively to overcome using the gas absorption cell light channel structure of the utility model
Beam collimation degree in the presence of conventional solution is poor, it is big to be unable to energy loss in relatively long distance transmission and transmit process,
And the hot spot of generation is also big, constrains the growth of light path Zigzag type long light path White pond light path, while also seriously affected inspection
Sensitivity and accuracy are surveyed, and the technical solution of the utility model can ensure that collimated collimated light beam can keep relatively long distance
Collimation, convenient for expanding light path and reducing luminous energy loss in transmit process, be conducive to improve detection sensitivity and accuracy, energy
Conscientiously meet the Precision measurement of environmentally friendly polluted gas, particularly low concentration pollution gas in fume continuous monitoring system, solve
Perplex a great problem of industry, be the big innovation in the detection of environmentally friendly gas in fact, hence it is evident that there is very strong practicability and valuable
Market application foreground.
Description of the drawings
Fig. 1 is the general structure schematic diagram of the utility model embodiment；
Fig. 2 is the structure and operating diagram of collimating mirror in the utility model embodiment；
Fig. 3 is the structure and operating diagram of focus lamp in the utility model embodiment；
Fig. 4 is the structure and operating diagram in White pond in the utility model embodiment.
In figure：
1. 11. incident optical of light inputting end component, 12. collimating mirror, 121. flat cylinder A
122. 2. light extraction end components of outer gibbosity arc plane of refraction A, 21. focus lamp
211. flat 212. outer gibbosity arc plane of refraction B of cylinder B, 22. the output optical fibers
3. 31. small 32. small concave mirror A ' of concave mirror A of inside light path component
33. big 4. pond bodies of concave mirror B.
Specific embodiment
The utility model is described in further detail with exemplary embodiments below in conjunction with the accompanying drawings.
In Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the gas absorption cell light suitable for fume continuous monitoring system of the utility model
Line structure mainly includes light inputting end component 1, light extraction end component 2 and the inside light path component 3 for being arranged on 4 intracavitary of pond body, wherein：Enter
Light end component 1 includes the incident optical 11 being connected with bright lamp divergent shape light beam of light source light path and has divergent shape light beam of light source
Refractive transition is the collimating mirror 12 of collimated light beam function；Light extraction end component 2 includes is by the collimated light beam refractive transition of outgoing
The focus lamp 21 of emergent light spot function, the output optical fiber 22 being connected with spectroanalysis instrument light path；Internal light path component 3 is gathered around by three
The light path Zigzag type long light path White pond that the spherical concave mirror for having same curvature radius is formed is filled the post of, the small concave mirror A of two of which
31 is identical with the structure size of A ' 32, is mounted on one end of pond body 4 side by side, and big concave mirror B 33 is mounted on pond
The other end of body 4, is characterized in that：The collimating mirror 12 is by the higher ultraviolet fused silica glass system of deep ultraviolet band transmitance
Into with the next divergent shape light beam of light source refractive transition of incident optical transmission is parallel into what will not be dissipated at least in 500mm
The function of light beam interconnects the integral type non-spherical lens formed by flat cylinder A 121 and outer gibbosity arc plane of refraction A 122
Fill the post of；The focus lamp 21 is made of the higher ultraviolet fused silica glass of deep ultraviolet band transmitance, has directional light
For beam elder generation refractive transition into converging beam, refocusing is transformed into diameter less than 3mm, the smaller light received in full convenient for the output optical fiber 22
Spot function is reflected by the flat-shaped cylinder A 211 of middle flat and the outer gibbosity arc positioned at flat-shaped 211 front and rear sides of cylinder A of middle flat
The aspherical biconvex lens of integral type that face B212 is formed is filled the post of；Concave mirror A two small described in the inside light path component 3
It plates to be equipped with respectively on the inner concave of 31 and A ' 32 and big concave mirror B 33 and more than 90% is reached to the reflectivity of deep ultraviolet band light
Ultraviolet enhancing aluminium film.
Claims (1)
1. a kind of gas absorption cell light channel structure suitable for fume continuous monitoring system mainly includes light inputting end component（1）, go out
Light end component（2）Be arranged on pond body（4）The inside light path component of intracavitary（3）, wherein：Light inputting end component（1）Include with it is bright
The incident optical that lamp divergent shape light beam of light source light path is connected（11）With with by divergent shape light beam of light source refractive transition be directional light
The collimating mirror of beam function（12）；Light extraction end component（2）It is emergent light spot function to include the collimated light beam refractive transition of outgoing
Focus lamp（21）, the output optical fiber that is connected with spectroanalysis instrument light path（22）；Internal light path component（3）Possessed by three identical
The light path Zigzag type long light path White pond that the spherical concave mirror of radius of curvature is formed is filled the post of, the small concave mirror A of two of which（31）With
A’（32）Structure size it is identical, be mounted on pond body side by side（4）One end, big concave mirror B（33）It is mounted on
Pond body（4）The other end, it is characterised in that：
The collimating mirror（12）It is made of the higher ultraviolet fused silica glass of deep ultraviolet band transmitance, by flat cylinder
A（121）With outer gibbosity arc plane of refraction A（122）The integral type non-spherical lens that interconnection is formed is filled the post of；
The focus lamp（21）It is made of the higher ultraviolet fused silica glass of deep ultraviolet band transmitance, it is flat-shaped by middle flat
Cylinder A（211）With positioned at the flat-shaped cylinder A of middle flat（211）The outer gibbosity arc plane of refraction B of front and rear sides（212）One formed
The aspherical biconvex lens of body formula is filled the post of；
The inside light path component（3）Described in concave mirror A two small（31）And A '（32）And big concave mirror B（33）It is interior
It is plated respectively on concave surface and is equipped with the ultraviolet enhancing aluminium film for reaching more than 90% to the reflectivity of deep ultraviolet band light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721827789.3U CN207571018U (en) | 2017-12-25 | 2017-12-25 | A kind of gas absorption cell light channel structure suitable for fume continuous monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721827789.3U CN207571018U (en) | 2017-12-25 | 2017-12-25 | A kind of gas absorption cell light channel structure suitable for fume continuous monitoring system |
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| CN207571018U true CN207571018U (en) | 2018-07-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520931A (en) * | 2018-12-29 | 2019-03-26 | 青岛海纳光电环保有限公司 | Gas absorption chamber |
| 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 |
-
2017
- 2017-12-25 CN CN201721827789.3U patent/CN207571018U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520931A (en) * | 2018-12-29 | 2019-03-26 | 青岛海纳光电环保有限公司 | Gas absorption chamber |
| 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 |
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