CN201251546Y - Optical interference type methane detector - Google Patents
Optical interference type methane detector Download PDFInfo
- Publication number
- CN201251546Y CN201251546Y CNU2008200396117U CN200820039611U CN201251546Y CN 201251546 Y CN201251546 Y CN 201251546Y CN U2008200396117 U CNU2008200396117 U CN U2008200396117U CN 200820039611 U CN200820039611 U CN 200820039611U CN 201251546 Y CN201251546 Y CN 201251546Y
- Authority
- CN
- China
- Prior art keywords
- level crossing
- light
- air
- reflectance coating
- chamber
- 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
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 230000003287 optical effect Effects 0.000 title abstract 2
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- 238000000576 coating method Methods 0.000 claims abstract description 27
- 230000006698 induction Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
An optical interference type methane detector relates to a gas, in particular to a methane gas concentration detecting instrument. The utility model discloses an air chamber, the light source, the condensing lens, the back has the level crossing of reflectance coating, refraction prism, reflecting prism, telescope group, two bundles of light that form respectively under the effect of level crossing behind the gas of difference, can meet before getting into reflecting prism, together get into telescope group, two bundles of light produce peculiar light interference phenomenon on telescope's objective focal plane, the central authorities that utilize this kind to interfere the phenomenon formation through the visible light of people's eye are black stripe, both sides are the color stripe, just can be fast the methane volume deviation percentage of gas sample room with the air chamber, people just can be rapidly and accurately be at the methane concentration in colliery and other workplace survey air, provide the safety guarantee for work in the pit.
Description
Technical field
The utility model relates to gas, particularly the testing instrument device of concentration of methane gas.
Background technology
Well-known borehole operation has high danger, and its potential safety hazard comes from the methane gas content of excessive concentrations, and late when people feel peculiar smell with the physiological function of self, the harm that causes is well imagined.The underground survey instrument was also arranged in the past, need down-hole extraction gas sample mostly, and brought to ground testing laboratory again and perform an analysis, this speed is slower, and inconvenient operation, even inaccurate natural instincts also occurs is unfavorable for that the down-hole detects whenever and wherever possible.
The utility model content
The utility model purpose is to design a kind of light interference type methane analyzer that operate at any time the down-hole that is convenient for measuring, is beneficial to.
The utility model comprises air chamber, light source, condenser, the back side has the level crossing of reflectance coating, refractive prism, reflecting prism, the telescope group, described air chamber is made up of two air plenums and a gas specimen chamber, three air chamber faces of being parallel to each other are put, two air plenums are arranged in the both sides of gas specimen chamber, the gas specimen chamber connects draft tube and escape pipe, connect air bag in the draft tube end, end at escape pipe is provided with plug, two air plenums are provided with envelope confidential paper respectively, the two ends of the gentle specimen chamber of air plenum are provided with the zero diopter lens respectively, the described back side has the level crossing of reflectance coating and two outer ends that refractive prism is arranged in air chamber, level crossing and air chamber that the back side has reflectance coating are the 45 positioned opposite, light source arrangement has the opposite side of the level crossing of reflectance coating overleaf, condenser is arranged between light source and the level crossing, described reflecting prism is arranged on the light emerging ray of level crossing, and the telescope group is arranged on the emerging ray of reflecting prism; And the light that light source is sent has the level crossing of reflectance coating with the 45 incident back side after condenser is assembled, pass one of them air plenum of air chamber from the light of flat mirror reflects, after the refraction of refractive prism, enter another air plenum, the light that passes this air plenum enters the reflectance coating at the level crossing back side after the level crossing refraction, after the reflectance coating reflection, enter reflecting prism through the level crossing refraction again, penetrate by the telescope group at last; The light that is sent by light source enters the reflectance coating at the level crossing back side simultaneously after the level crossing refraction, under the reflection of reflectance coating, the gas specimen chamber that passes in the air chamber after the level crossing refraction arrives refractive prism again, after the refractive prism refractive power, return in the gas specimen chamber again, this light enters reflecting prism after the reflection of level crossing, enter the telescope group at last.
The utility model utilizes the principle of interference design of light wave, at the two-beam line that forms respectively under the effect of level crossing behind different gas, before entering reflecting prism, joined, together enter the telescope group, the two-beam line produces distinctive light interference phenomena on telescopical focal plane of lens, utilize this central authorities that form by the visible light interference phenomena of human eye to be black streaking, the both sides is a color fringe, just can be apace the methane content deviation percent of vent one's spleen specimen chamber and air plenum, people just can be rapidly and exactly in the colliery and other workplace measure airborne methane concentration, for underground work provides safety guarantee.
Because the filter chamber contacts on the induction pipe of gas specimen chamber.Can in the filter chamber, place removable suction and change agent,, be used for absorbing the carbon dioxide in the sample gas,, be used for absorbing the water vapour in the sample gas, to improve the accuracy of measuring as lime chloride as soda lime.
Polyphone dish type draft tube on the utility model induction pipe can the self-poise air pressure change and reduce the influence of gaseous diffusion effect, ensures the accuracy of measuring.
Two air plenums can be interconnected by pipeline, also can not gang up mutually.Neither influence detects.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, at housing 1 internal fixation air chamber of the present utility model, air chamber is made up of 2,4 and gas specimen chambers 3 of two air plenums, three air chamber faces of being parallel to each other are put, air plenum 2,4 is arranged in the both sides of gas specimen chamber 3, gas specimen chamber 3 connects draft tube 5 and escape pipe 6, and the end outside escape pipe 6 is positioned at housing 1 cooperates plug 7.Polyphone filter chamber 8 on the induction pipe 5 of gas specimen chamber 3, air bag 10 is communicated with filter chamber 8 by dish type draft tube 10.
Two air plenums 2,4 can be interconnected by pipeline, and by manually the envelope confidential paper and the external world form relative sealing.
The two ends of air plenum 2,4 gentle specimen chambers 3 are provided with zero diopter lens 11,12 respectively.
The back side has the level crossing 13 of reflectance coating and two outer ends that refractive prism 14 is arranged in air chamber, and the level crossing 13 that the back side has reflectance coating is the 45 positioned opposite with air chamber.Light source 15 is arranged in the opposite side that the back side has the level crossing 13 of reflectance coating, condenser 17 is arranged between light source 15 and the level crossing 13, reflecting prism 16 is arranged on the light emerging ray of level crossing 13, telescope group 18 is arranged on the emerging ray of reflecting prism 16, offers eyelet 19 on the housing 1 on telescope group 18 emerging rays.
And the light that light source 15 is sent has the level crossing 13 of reflectance coating with the 45 incident back side after condenser 17 is assembled, pass air plenum 4 from the light of level crossing 13 reflections, after the refraction of refractive prism 14, enter air plenum 2, this light that passes air plenum 2 enters the reflectance coating at level crossing 13 back sides after level crossing 13 refractions, after the reflectance coating reflection, enter reflecting prism 16 through level crossing 13 refractions again, penetrated by telescope group 18 at last, people can observe this Shu Guang from eyelet 19.Simultaneously, the light that is sent by light source 15 enters the reflectance coating at the level crossing back side after level crossing 13 refractions, under the reflection of reflectance coating, the gas specimen chamber 3 that passes in the air chamber after level crossing 13 refractions arrives refractive prism 14 again, after refractive prism 14 refractive powers, return again in the gas specimen chamber 3, this light enters reflecting prism 16 after the reflection of level crossing 13, enter telescope group 18 at last, and people also can observe this Shu Guang from eyelet 19 simultaneously.
Claims (4)
1, light interference type methane analyzer, it is characterized in that comprising air chamber, light source, condenser, the back side has the level crossing of reflectance coating, refractive prism, reflecting prism, the telescope group, described air chamber is made up of two air plenums and a gas specimen chamber, three air chamber faces of being parallel to each other are put, two air plenums are arranged in the both sides of gas specimen chamber, the gas specimen chamber connects draft tube and escape pipe, connect air bag in the draft tube end, end at escape pipe is provided with plug, two air plenums are provided with envelope confidential paper respectively, the two ends of the gentle specimen chamber of air plenum are provided with the zero diopter lens respectively, the described back side has the level crossing of reflectance coating and two outer ends that refractive prism is arranged in air chamber, level crossing and air chamber that the back side has reflectance coating are the 45 positioned opposite, light source arrangement has the opposite side of the level crossing of reflectance coating overleaf, condenser is arranged between light source and the level crossing, and described reflecting prism is arranged on the light emerging ray of level crossing, and the telescope group is arranged on the emerging ray of reflecting prism; And the light that light source is sent has the level crossing of reflectance coating with the 45 incident back side after condenser is assembled, pass one of them air plenum of air chamber from the light of flat mirror reflects, after the refraction of refractive prism, enter another air plenum, the light that passes this air plenum enters the reflectance coating at the level crossing back side after the level crossing refraction, after the reflectance coating reflection, enter reflecting prism through the level crossing refraction again, penetrate by the telescope group at last; The light that is sent by light source enters the reflectance coating at the level crossing back side simultaneously after the level crossing refraction, under the reflection of reflectance coating, the gas specimen chamber that passes in the air chamber after the level crossing refraction arrives refractive prism again, after the refractive prism refractive power, return in the gas specimen chamber again, this light enters reflecting prism after the reflection of level crossing, enter the telescope group at last.
2,, it is characterized in that the filter chamber that on the induction pipe of gas specimen chamber, contacts according to the described light interference type methane analyzer of claim 1.
3,, it is characterized in that polyphone dish type draft tube on the induction pipe according to the described light interference type methane analyzer of claim 2.
4,, it is characterized in that two air plenums are interconnected by pipeline according to claim 1 or 2 or 3 described light interference type methane analyzers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200396117U CN201251546Y (en) | 2008-09-01 | 2008-09-01 | Optical interference type methane detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200396117U CN201251546Y (en) | 2008-09-01 | 2008-09-01 | Optical interference type methane detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251546Y true CN201251546Y (en) | 2009-06-03 |
Family
ID=40747218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200396117U Expired - Fee Related CN201251546Y (en) | 2008-09-01 | 2008-09-01 | Optical interference type methane detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251546Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507498A (en) * | 2011-10-24 | 2012-06-20 | 兖矿集团有限公司 | Measurement range enlarging use method of gas tester and corresponding novel gas tester |
| CN102721667A (en) * | 2012-06-29 | 2012-10-10 | 中国科学院自动化研究所 | Optical interference type intelligent gas sensor |
| CN105044109A (en) * | 2015-07-10 | 2015-11-11 | 浙江嘉科电子有限公司 | Gas concentration sensing device for article protection and burglary prevention |
-
2008
- 2008-09-01 CN CNU2008200396117U patent/CN201251546Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507498A (en) * | 2011-10-24 | 2012-06-20 | 兖矿集团有限公司 | Measurement range enlarging use method of gas tester and corresponding novel gas tester |
| CN102507498B (en) * | 2011-10-24 | 2013-08-07 | 兖矿集团有限公司 | Measurement range enlarging use method of gas tester and corresponding novel gas tester |
| CN102721667A (en) * | 2012-06-29 | 2012-10-10 | 中国科学院自动化研究所 | Optical interference type intelligent gas sensor |
| CN102721667B (en) * | 2012-06-29 | 2014-07-16 | 中国科学院自动化研究所 | Optical interference type intelligent gas sensor |
| CN105044109A (en) * | 2015-07-10 | 2015-11-11 | 浙江嘉科电子有限公司 | Gas concentration sensing device for article protection and burglary prevention |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20110901 |