CN105548052A - Testing cavity with continuously adjustable length applied to cavity ring-down spectroscope technology - Google Patents
Testing cavity with continuously adjustable length applied to cavity ring-down spectroscope technology Download PDFInfo
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- CN105548052A CN105548052A CN201610069954.7A CN201610069954A CN105548052A CN 105548052 A CN105548052 A CN 105548052A CN 201610069954 A CN201610069954 A CN 201610069954A CN 105548052 A CN105548052 A CN 105548052A
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 238000005516 engineering process Methods 0.000 title claims abstract description 52
- 238000000180 cavity ring-down spectroscopy Methods 0.000 claims description 49
- 238000007789 sealing Methods 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 19
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000001228 spectrum Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 229910001374 Invar Inorganic materials 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000979 retarding effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004847 absorption spectroscopy Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003595 spectral effect Effects 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
Abstract
The invention discloses a testing cavity with continuously adjustable length applied to a cavity ring-down spectroscope (CRDS) technology, wherein the internal length of the testing cavity is adjustable. By precise measurement and feedback and a precise feeding braking system, precise relative displacement between an inner cavity pipe and an outer cavity pipe, both of which are included in the testing cavity, is achieved, so that the adjustment of the internal length of a cavity body is achieved; therefore, one cavity can measure various gases of which the spectrums are apart form a great distance and the absorption strengths are different, and for each gas, the concentration measurement range can cover 1*10<-8> to 2%.
Description
Technical field
The present invention relates to the test chamber in a kind of cavity ring down spectroscopy technology field, be specifically related to a kind of continuously adjustabe length testing chamber for cavity ring down spectroscopy technology.
Background technology
Cavity ring down spectroscopy technology (hereinafter referred to as CRDS technology) is a kind of high-sensitive absorption spectroscopy techniques, is usually used as Trace gas detection and the measurement of lens reflecting rate.
The History Origin of CRDS technology was in 1961, and Jackson was by adding measuring accuracy by improved method Fabry-Perot-type cavity at that time.1973, Kastler measured after a branch of pulsed light enters Fabry-Perot-type cavity, due to the reflection loss of minute surface, the signal with exponential damping detected behind chamber.1980, along with the innovation of coating technique, specular reflectance constantly improved, and conventional art has been difficult to the requirement reaching albedo measurement, and Herbelin uses optics cavity phase-shifting technique accurately to obtain specular reflectance.1984, Anderson proposed to use cavity attenuation and vibration technique to measure specular reflectance first.By 1988, O ' Keefe and Deacon proposed CRDS technology first, and with pulsed laser measure O2 at 630nm place Absorption Line, but due to pulsed laser live width wide, frequency stability is poor, measures the resolution that obtains very low.D.Romanini in 1996 proposes the CRDS technology based on continuous wave laser, based on the high-repetition-rate of continuous wave laser, high stability and low noise, substantially increases detection sensitivity.
According to langbobier law, when the light that a beam intensity is I0 passes gas absorption medium, intensity can decay due to the absorption of medium, and the transmitted intensity detected will reduce, and light path is larger, and intensity reduces more obvious.Absorption spectroscopy techniques is exactly variation relation by comparing initial beam intensity and transmitted light intensity thus is finally inversed by the concentration of absorbing medium.Cavity ring down spectroscopy technology is by using two panels high reflective mirror as optics cavity, absorption light path is increased greatly, thus add detection sensitivity, light to enter after optics cavity roundtrip between two high reflective mirrors, reflect each time and all can decay due to the absorption of absorbing medium, transmitted light behind chamber will present the form of exponential damping, be obtained the absorbing medium concentration in chamber by the die-away time of measuring transmitted light intensity.As can be seen from above process, be different from other spectral techniques, what cavity ring down spectroscopy technology was measured is the time response of light intensity, instead of strength characteristics, so the fluctuating of light intensity is for measurement not impact, thus the dependence of laser light source stable is reduced to some extent.
Chamber length has vital role in cavity ring down spectroscopy technology, needs by adjustment chamber length in the design phase to determine the chamber long value being suitable for specific tested gas.The test chamber of regular length is mostly adopted in prior art, after having designed, be directed to the restriction that chamber that the kind of its tested gas of test chamber of regular length and the dynamic range of measurement all can be selected is long, cannot expand flexibly, and the long test chamber in chamber can be regulated also to there is a lot of weak point, especially its sealing property does not reach request for utilization, often causes the deficiency of result of use.
For above-mentioned reasons, the present inventor furthers investigate existing test chamber technology, to design the test chamber that can solve the problem.
Summary of the invention
In order to overcome the problems referred to above, present inventor has performed and study with keen determination, design the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology of adjustable in length in a kind of chamber, by measuring accurately and feeding back, and accurate feeding brake system, realize accurate relative displacement between lumen tube that test chamber comprises and external-cavity tube, thus the inner length realizing cavity regulates, thus complete the present invention.
Specifically, the object of the present invention is to provide following aspect:
(1) for a continuously adjustabe length testing chamber for cavity ring down spectroscopy technology, it is characterized in that, this test chamber comprises can the lumen tube 1 of relative sliding and external-cavity tube 2.
(2) the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to above-mentioned (1), is characterized in that, keeps sealing between described lumen tube 1 and external-cavity tube 2.
(3) the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to above-mentioned (1), is characterized in that, described lumen tube 1 and/or external-cavity tube 2 offer air intake opening and/or gas outlet.
(4) the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to above-mentioned (1), is characterized in that, be provided with the optical element for cavity ring down spectroscopy technology in lumen tube 1 and/or external-cavity tube 2.
(5) the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to above-mentioned (1), it is characterized in that, be also provided with the Control Component for controlling, measuring described lumen tube 1 and/or external-cavity tube 2 motion in described lumen tube 1 and/or external-cavity tube 2 outside.
(6) the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to above-mentioned (5), it is characterized in that, described Control Component comprises topworks 4, driver element 5, measuring unit 6 and control module 7.
(7) according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology one of above-mentioned (1)-(6) Suo Shu, it is characterized in that, between described lumen tube 1 and external-cavity tube 2, be provided with sealing unit 3.
(8) the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to above-mentioned (7), it is characterized in that, described sealing unit 3 comprises the first O-ring seal 31 and the second O-ring seal 32, all in the form of a ring, its cross section is all the U-shaped of one end open for described first O-ring seal 31 and the second O-ring seal 32;
Preferably, the first O-ring seal 31 is provided with trapezoidal groove 33 on the outer wall of described lumen tube 1 or external-cavity tube 2, the second O-ring seal 32 is provided with trapezoidal groove 33 on the outer wall of described lumen tube 1 or external-cavity tube 2.
(9) the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to above-mentioned (8), it is characterized in that, in the openend of the first O-ring seal 31 and the second O-ring seal 32, be all embedded with the support component for outwards supportting large described U-shaped opening;
Preferably, the support component be embedded at the openend of the first O-ring seal 31 is convex hold-down ring 34, and the support component be embedded at the openend of the second O-ring seal 32 is V-type spring 35.
(10) according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology one of above-mentioned (7)-(9) Suo Shu, it is characterized in that, described sealing unit 3 is arranged on lumen tube 1 and/or external-cavity tube 2;
Preferably, described sealing unit have one or two or multiple;
More preferably, described lumen tube 1 and/or external-cavity tube 2 offer the ring groove for holding described sealing unit.
The beneficial effect that the present invention has comprises:
(1) according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology provided by the invention, there is Control Component, lumen tube or external-cavity tube is driven by Control Component, make the chamber length of test chamber can flexible, increase and shorten chamber according to the needs of test long.
(2) long by the chamber of adjustment test chamber according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology provided by the invention, make single test chamber be applicable to the measurement of variety classes gas concentration.
(3) long by the chamber of adjustment test chamber according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology provided by the invention, add the dynamic range of measurement.
Accompanying drawing explanation
Fig. 1 illustrates the continuously adjustabe length testing cavity configuration schematic diagram for cavity ring down spectroscopy technology according to a kind of preferred implementation of the present invention;
Fig. 2 illustrates the continuously adjustabe length testing cavity configuration schematic diagram for cavity ring down spectroscopy technology of separately planting preferred implementation according to the present invention
Fig. 3 illustrates the sealing unit structural representation in the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology of separately planting preferred implementation according to the present invention
Fig. 4 illustrates the continuously adjustabe length testing cavity configuration schematic diagram for cavity ring down spectroscopy technology of planting again preferred implementation according to the present invention
Fig. 5 illustrates the concrete structure schematic diagram in the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to a kind of preferred implementation of the present invention.
Drawing reference numeral illustrates:
1-lumen tube
2-external-cavity tube
3-sealing unit
31-first O-ring seal
32-second O-ring seal
33-trapezoidal groove
34-convex hold-down ring
35-V type spring
4-topworks
5-driver element
6-measuring unit
7-control module
8-drive block
9-chamber mirror
10-piezoelectric ceramics
11-invar column sleeve
Embodiment
Below by drawings and Examples, the present invention is described in more detail.Illustrated by these, the features and advantages of the invention will become more explicit.
Word " exemplary " special here means " as example, embodiment or illustrative ".Here need not be interpreted as being better than or being better than other embodiment as any embodiment illustrated by " exemplary ".Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, accompanying drawing need not be drawn in proportion.
According to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology provided by the invention, as shown in fig. 1, this test chamber comprises can the lumen tube 1 of relative sliding and external-cavity tube 2, and described lumen tube 1 and external-cavity tube 2 inside all have enough predetermined spaces, so that place miscellaneous part, as preferred embodiment, the profile of lumen tube 1 and external-cavity tube 2 is similar to, and size is slightly different, and lumen tube one end is embedded in external-cavity tube, the two can slide mutually, reaches length-adjustable effect.Preferably, described lumen tube 1 and external-cavity tube 2 all adopt the invar material preparation with low coefficient of thermal expansion, and on the end face of lumen tube 1 and external-cavity tube 2, design is equipped with the invar column sleeve 11 of hollow, wherein preferably, the invar column sleeve of external-cavity tube 2 studs with piezoelectric ceramics 10, for the fine setting of chamber mirror.
In one preferred embodiment, sealing is kept between described lumen tube and external-cavity tube, preferably, sealing unit 3 is provided with between lumen tube and external-cavity tube, to realize the sealing between lumen tube and external-cavity tube, in addition, convenient in order to slide between lumen tube and external-cavity tube, be also placed with lubricating system and lubricant between.
In one preferred embodiment, as shown in Fig. 2,3,4, described sealing unit 3 comprises the first O-ring seal 31 and the second O-ring seal 32, and all in the form of a ring, its cross section is all the U-shaped of one end open for described first O-ring seal 31 and the second O-ring seal 32;
Further preferably, if Fig. 2 is shown, the U-shaped open interior size of described O-ring seal is uneven, and it increases from inside to outside gradually, has certain gradient; O-ring seal described in the present invention refers to the first O-ring seal 31 and the second O-ring seal 32.
Preferably, first O-ring seal 31 is provided with trapezoidal groove 33 on the outer wall of described lumen tube 1 or external-cavity tube 2, second O-ring seal 32 is provided with trapezoidal groove 33 on the outer wall of described lumen tube 1 or external-cavity tube 2, and the degree of depth of described trapezoidal groove can change along with the distortion size of O-ring seal.Described O-ring seal is teflin ring, and namely sealing circle is made up of teflon, has certain elasticity.
In one preferred embodiment, in the openend of the first O-ring seal 31 and the second O-ring seal 32, be all embedded with the support component for outwards supportting large described U-shaped opening;
Preferably, the support component be embedded at the openend of the first O-ring seal 31 is convex hold-down ring 34, and the support component be embedded at the openend of the second O-ring seal 32 is V-type spring 35.Wherein, not easily there is deformation in described convex hold-down ring 34, can be made up of the material that rigidity is stronger, and the profile of described convex hold-down ring 34 and the U-shaped opening shape of O-ring seal match, and further, described convex hold-down ring 34 can move left and right; Specifically, convex hold-down ring 34 can be embedded in the U-shaped opening of described O-ring seal, and a segment distance can be forced out when the U-shaped opening of O-ring seal is oppressed owing to having the predetermined gradient, namely convex hold-down ring 34 can when there being ambient pressure a protruding segment distance, equally, under the effect of ambient pressure, described convex hold-down ring 34 also can move inward, and is namely pressed in the U-shaped opening of O-ring seal;
Described V-type spring 35 has larger elastic force, can to greatest extent to the U-shaped opening of O-ring seal described in outer support.
Preferably, as shown in Figure 2, described first O-ring seal 31 and the second O-ring seal 32 arranged in series, namely the first O-ring seal 31 is consistent with the opening direction of the second O-ring seal 32, and all towards right side, and described first O-ring seal is on a left side, and the second O-ring seal is on the right side.
In one preferred embodiment, described sealing unit 3 is arranged on lumen tube 1 and/or external-cavity tube 2; Preferably, described sealing unit have one or two or multiple;
More preferably, as shown in Figure 4, described lumen tube 1 and/or external-cavity tube 2 offer the ring groove for holding described sealing unit.
Make pressure medium higher according to sealing unit provided by the invention, sealing peak stress is larger, realizes high pressure sealing.
In one preferred embodiment, described lumen tube and/or external-cavity tube offer air intake opening and/or gas outlet, so that the air pressure in adjustment test chamber, described air intake opening and gas outlet are connected to draft tube and escape pipe, so that the gas componant in control chamber.
In one preferred embodiment, the optical element for cavity ring down spectroscopy technology is provided with in lumen tube and/or external-cavity tube, described optical element comprises chamber mirror etc. can with optical element in a lumen, to realize the experimental implementation such as the measurement of cavity ring-down spectroscopy.Preferentially, as shown in Figure 5, described chamber mirror 9 is arranged on the end of lumen tube, is arranged on the invar column sleeve of hollow further, and described chamber mirror is the plano-concave spherical reflector with high reflectance, and reflectivity is greater than 99.9%.
In one preferred embodiment, the Control Component for controlling, measuring described lumen tube and/or external-cavity tube motion is also provided with in described lumen tube and/or external-cavity tube outside, described Control Component comprises topworks 4, driver element 5, measuring unit 6 and control module 7, according to the absorption line position of tested gas, absorption intensity and required measurement range, lumen tube and/or external-cavity tube accurately move to assigned address under the drive of Control Component.Preferentially, described topworks 4 comprises air-float guide rail, between this guide rail two sides, have air cavity, after gas enters air cavity, form the gas mould that one deck is very thin between two guide pass, and gas mould thickness keeps invariable substantially.Air-float guide rail can make cavity obtain nothing friction and vibrationless level and smooth movement, has Panel-corrected Model simultaneously, can ensure high-precision relative motion between cavity.
Further preferably, one of lumen tube or external-cavity tube is fixing, another one is linked together by drive block 8 and the slide block in topworks, topworks 4 can adopt high precision guide rail leading screw, measuring unit 6 can adopt high precision grating scale, driver element 5 coordinates accurate retarding machine and piezoelectric ceramics two parts to form by stepper motor can adopt stepper motor cooperation accurate retarding machine, stepper motor coordinates accurate retarding machine to be used for realizing displacement coarse adjustment, piezoelectric ceramics is used for realizing micrometric displacement, can compensate and revise the non-linear of material and mechanism defect and system, control module 7 can adopt embedded-type ARM microprocessor, the drive mechanism of guide rail leading screw can ensure the right alignment that lumen tube 1 and external-cavity tube 2 move, high precision grating scale can the length of Measurement accuracy displacement thus the measurement cavity length after calculating adjustment, the driving design that stepper motor coordinates accurate retarding machine and piezoelectric ceramics 10 to combine can the capable trickle regulating and controlling of contraposition shift-in, embedded-type ARM microprocessor is by measuring the position data control step electric machine rotation of grating scale feedback, as preferred embodiment, lumen tube can be made to fix, control external-cavity tube and move, external-cavity tube also can be made to fix, control lumen tube and move, two lumens can also be controlled and move simultaneously.
Multiple different gas can be measured by use cavity in continuously adjustabe length testing chamber for cavity ring down spectroscopy technology provided by the invention, the spectrum a good distance off of these gases, and absorption intensity is different, for often kind of gas, measurement of concetration scope can cover from 1 × 10
-8to 2%.
The beneficial effect that the present invention has comprises:
(1) according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology provided by the invention, there is Control Component, lumen tube or external-cavity tube is driven by Control Component, make the chamber length of test chamber can flexible, increase and shorten chamber according to the needs of test long.
(2) long by the chamber of adjustment test chamber according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology provided by the invention, make single test chamber be applicable to the measurement of variety classes gas concentration.
(3) long by the chamber of adjustment test chamber according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology provided by the invention, add the dynamic range of measurement.
More than combine and preferred embodiment describe the present invention, but these embodiments are only exemplary, only play illustrative effect.On this basis, can carry out multiple replacement and improvement to the present invention, these all fall within the scope of protection of the present invention.
Claims (10)
1. for a continuously adjustabe length testing chamber for cavity ring down spectroscopy technology, it is characterized in that, this test chamber comprises can the lumen tube (1) of relative sliding and external-cavity tube (2).
2. the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to claim 1, is characterized in that, keeps sealing between described lumen tube (1) and external-cavity tube (2).
3. the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to claim 1, is characterized in that, described lumen tube (1) and/or external-cavity tube (2) offer air intake opening and/or gas outlet.
4. the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to claim 1, is characterized in that, is provided with the optical element for cavity ring down spectroscopy technology in lumen tube (1) and/or external-cavity tube (2).
5. the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to claim 1, it is characterized in that, be also provided with the Control Component moved for controlling, measuring described lumen tube (1) and/or external-cavity tube (2) in described lumen tube (1) and/or external-cavity tube (2) outside.
6. the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to claim 5, it is characterized in that, described Control Component comprises topworks (4), driver element (5), measuring unit (6) and control module (7).
7., according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology one of claim 1-6 Suo Shu, it is characterized in that, between described lumen tube (1) and external-cavity tube (2), be provided with sealing unit (3).
8. the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to claim 7, it is characterized in that, described sealing unit (3) comprises the first O-ring seal (31) and the second O-ring seal (32), all in the form of a ring, its cross section is all the U-shaped of one end open for described first O-ring seal (31) and the second O-ring seal (32);
Preferably, on the outer wall of described lumen tube (1) or external-cavity tube (2), be provided with trapezoidal groove (33) the first O-ring seal (31) is upper, on the outer wall of described lumen tube (1) or external-cavity tube (2), be provided with trapezoidal groove (33) the second O-ring seal (32) is upper.
9. the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology according to claim 8, it is characterized in that, in the openend of the first O-ring seal (31) and the second O-ring seal (32), be all embedded with the support component for outwards supportting large described U-shaped opening;
Preferably, the support component be embedded at the openend of the first O-ring seal (31) is convex hold-down ring (34), and the support component be embedded at the openend of the second O-ring seal (32) is V-type spring (35).
10. according to the continuously adjustabe length testing chamber for cavity ring down spectroscopy technology one of claim 7-9 Suo Shu, it is characterized in that, described sealing unit (3) is arranged on lumen tube (1) and/or external-cavity tube (2);
Preferably, described sealing unit have one or two or multiple;
More preferably, described lumen tube (1) and/or external-cavity tube (2) offer the ring groove for holding described sealing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610069954.7A CN105548052B (en) | 2015-02-13 | 2016-02-01 | Continuously adjustable length testing chamber for cavity ring down spectroscopy technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015100811449 | 2015-02-13 | ||
| CN201510081144 | 2015-02-13 | ||
| CN201610069954.7A CN105548052B (en) | 2015-02-13 | 2016-02-01 | Continuously adjustable length testing chamber for cavity ring down spectroscopy technology |
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| Publication Number | Publication Date |
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| CN105548052A true CN105548052A (en) | 2016-05-04 |
| CN105548052B CN105548052B (en) | 2018-10-12 |
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| CN201610069954.7A Expired - Fee Related CN105548052B (en) | 2015-02-13 | 2016-02-01 | Continuously adjustable length testing chamber for cavity ring down spectroscopy technology |
| CN201620100253.0U Expired - Fee Related CN205506673U (en) | 2015-02-13 | 2016-02-01 | A continuously adjustable length test chamber that is used for optical cavity to decline swinging spectral technique |
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| CN201620100253.0U Expired - Fee Related CN205506673U (en) | 2015-02-13 | 2016-02-01 | A continuously adjustable length test chamber that is used for optical cavity to decline swinging spectral technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444947A (en) * | 2018-03-02 | 2018-08-24 | 湖北理工学院 | A kind of CRDS devices of included wavelength calibration |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627477A (en) * | 2017-03-15 | 2018-10-09 | 中国计量科学研究院 | A kind of optical cavity structure |
| CN116448718B (en) * | 2023-04-19 | 2023-12-05 | 河北子曰机械设备有限公司 | Cavity ring-down tuning unit and cavity ring-down spectroscopy device |
| CN116660166B (en) * | 2023-07-31 | 2023-09-22 | 中国科学院空天信息创新研究院 | Gas cavity structure for cavity-assisted gas concentration measurement |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1062335A (en) * | 1996-08-14 | 1998-03-06 | Fuji Electric Co Ltd | Measurement cell of infrared gas analyzer |
| CN2385157Y (en) * | 1998-10-19 | 2000-06-28 | 袁进军 | High and medium pressure two-lip sealing ring |
| CN103562704A (en) * | 2011-03-25 | 2014-02-05 | 弗吉尼亚大学专利基金委员会 | Adaptable cell design for a spectroscopy apparatus |
| CN203880095U (en) * | 2014-05-27 | 2014-10-15 | 北京裕泰行新材料科技有限公司 | Pressure resisting type U-shaped spring energy accumulation lip-shaped sealing ring |
| CN104141792A (en) * | 2014-07-24 | 2014-11-12 | 昆山禾信质谱技术有限公司 | Sealing device based on cavity ring-down spectroscopy technology |
-
2016
- 2016-02-01 CN CN201610069954.7A patent/CN105548052B/en not_active Expired - Fee Related
- 2016-02-01 CN CN201620100253.0U patent/CN205506673U/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1062335A (en) * | 1996-08-14 | 1998-03-06 | Fuji Electric Co Ltd | Measurement cell of infrared gas analyzer |
| CN2385157Y (en) * | 1998-10-19 | 2000-06-28 | 袁进军 | High and medium pressure two-lip sealing ring |
| CN103562704A (en) * | 2011-03-25 | 2014-02-05 | 弗吉尼亚大学专利基金委员会 | Adaptable cell design for a spectroscopy apparatus |
| CN203880095U (en) * | 2014-05-27 | 2014-10-15 | 北京裕泰行新材料科技有限公司 | Pressure resisting type U-shaped spring energy accumulation lip-shaped sealing ring |
| CN104141792A (en) * | 2014-07-24 | 2014-11-12 | 昆山禾信质谱技术有限公司 | Sealing device based on cavity ring-down spectroscopy technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444947A (en) * | 2018-03-02 | 2018-08-24 | 湖北理工学院 | A kind of CRDS devices of included wavelength calibration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105548052B (en) | 2018-10-12 |
| CN205506673U (en) | 2016-08-24 |
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