CN104634739A - Dustproof optical detection probe for methane gas - Google Patents
Dustproof optical detection probe for methane gas Download PDFInfo
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- CN104634739A CN104634739A CN201510025873.2A CN201510025873A CN104634739A CN 104634739 A CN104634739 A CN 104634739A CN 201510025873 A CN201510025873 A CN 201510025873A CN 104634739 A CN104634739 A CN 104634739A
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- filter membrane
- protection box
- sensing
- banded filter
- roller
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Abstract
The invention relates to a dustproof optical detection probe for methane gas. The probe comprises a protection box, a sensing gas chamber and a strip-shaped filtration film, wherein the sensing gas chamber and the strip-shaped filtration film are arranged in the protection box; a through gas passage with a rectangular cross section is formed in the sensing gas chamber; C-lenses are oppositely arranged on the left side wall and the right side wall of the gas passage; and the gas passage is communicated with air through an air vent window on the protection box. The probe is characterized in that a strip-shaped filtration film transmission mechanism is arranged between the protection box and the sensing gas chamber; the strip-shaped filtration film transmission mechanism comprises two rollers above the sensing gas chamber and two rollers below the sensing gas chamber; all the rollers are supported on the protection box; the strip-shaped filtration film is ring-shaped and encircles the rollers to cover the two end openings of the gas passage; dust suction brushes are arranged outside the strip-shaped filtration film and supported on the protection box; and the bristles of the brushes act on the strip-shaped filtration film. The probe can work for a long time so as to avoid a safety accident caused by neglect of replacement of a filtration curtain.
Description
Technical field
The chemistry or physical property that the present invention relates to by means of measuring material carrys out test material, has and relates to methane gas spectroscopy detection probe, and this device is applicable to detect methane gas in mine.
Background technology
Coal industry is the industry that in China's commercial production, casualty accident is the most serious, and current State owned coal mine great majority belong to gaseous mine, and its principal ingredient is methane, very easily gas explosion accident occurs during digging, cause serious people's life and property loss.In recent years, carry out the spectroscopy detection method of methane gas and the correlative study of optical gas sensor both at home and abroad, for realizing the high selectivity to object gas, highly sensitive, fast speed non-contact detection, but the high dust atmosphere under mine makes optical gas sensor surface easily have coal ash pollution to adsorb, optical gas sensor and ambient atmos circulation are had a strong impact on, optical gas sensor is reduced the induction speed of trace amounts of methane gas, introduces measuring error.Therefore, the dust reduction capability of methane gas optic probe becomes the study hotspot of this area.
Publication number is that the application for a patent for invention of CN 101865825A discloses " a kind of miniature open optical fiber gas sample cell, include box-like pond body, it is characterized in that: have through pond body in the body of described pond and cross section is the air flue of rectangle, the blow vent of air flue is positioned on described pond body two symmetrical sides, the center of described pond two other symmetrical side of body has through hole, described through hole is relative in the same horizontal line, the GRIN Lens having light path adjustable is arranged in described through hole respectively, described GRIN Lens respectively separately with two single-mode fibers be positioned at outside the body of pond one by one optics be connected." scheme described in this application for a patent for invention also discloses a kind of dustproof construction; this dustproof construction comprises the protection box body be located at outside sample cell; two ventilation windows of described protection box body are provided with changeable type PTFE filter membrane, prevent dust and steam from entering sample cell by gas channels.Although the scheme described in above-mentioned patented claim can solve the dust-proof problem of sample cell, improve the reliability of Environmental safety supervision, still need the replacing that frequently stops production, especially once be negligent of replacing and will cause and fail to report and lead to security incident.
Publication number is that the application for a patent for invention of CN 102879528A discloses one " sensing probe dust-control method and device ", wherein, described sensing probe dust guard comprises: sensing probe, filtration curtain, roller shutter master rotor, roller shutter are from cylinder, micromachine and timing controller; Filter the two ends of curtain and connect roller shutter master rotor and roller shutter respectively from cylinder, the output of timing controller connects micromachine, and micromachine connects roller shutter master rotor; Described sensing probe dust-control method is: before sensing probe, install dust guard, control roller shutter master rotor by the timing controller of dust guard to rotate, to be involved in roller shutter master rotor by the filtration curtain of dustproof plug plug portion, Partial filtration curtain clean from cylinder for roller shutter is updated to sensing probe air intake opening anterior, ensures that environmental gas can access sensing probe unobstructedly.Although the scheme described in above-mentioned patented claim can extend the cycle changed and filter curtain (i.e. filter membrane), but, owing to being wound on the limited length of filtering curtain from cylinder, or to stop production to change and filter curtain, and the filtration curtain changed needs artificial cleaning just can reuse, and wastes time and energy.In addition, if will by the scheme described in above-mentioned patented claim for improvement of publication number for scheme described in the application for a patent for invention of CN 101865825A just must adopt two cover systems just can cover in the two-port of air flue.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of dust-proof methane gas optical detection probe, and this probe can long-term work, avoids being negligent of changing filtering curtain and leading to security incident.
The technical scheme that the present invention solves the problem is:
A kind of dust-proof methane gas optical detection probe, this probe comprises protection box, be located at sensing air chamber in protection box and banded filter membrane; Wherein, described sensing gas indoor are provided with the air flue that pre-and post perforative xsect is rectangle, and described air flue left and right sidewall is provided with C-Lens lens relatively, and described air flue is communicated with air through the ventilation window be located on protection box, it is characterized in that,
Banded filter membrane gear train is provided with between described protection box and sensing air chamber, this banded filter membrane gear train is made up of with the roller of two be located on the downside of sensing air chamber the roller of two that are located on the upside of sensing air chamber, and wherein said roller is all bearing on protection box;
Described banded filter membrane is annular, and is looped around on described roller and the two-port of described air flue is hidden;
The outside of described banded filter membrane is provided with absorbent brush, and this absorbent brush is bearing on protection box, and bristle action is on banded filter membrane.
Because described banded filter membrane gear train is made up of four rollers, therefore, not only waste if each roller adopts a motor to drive respectively, and be difficult to ensure synchronously; If with a roller for driving wheel drives, other three rollers are then follower, in the case, will skid when the tensile force of banded filter membrane is inadequate.In order to solve an above-mentioned difficult problem, improvement project of the present invention is, the bolster of each roller is equipped with belt pulley, and a driving belt is looped around on all belt pulleys.
Another improvement project of dust-proof methane gas optical detection probe of the present invention is, the bristle action of described absorbent brush is being positioned on the banded filter membrane in the middle of the roller of two of side, sensing gas room.This improvement project both can siphon away the dust kicked up by bristle, also can sop up the dust be contained in banded filter membrane micropore.
Dust-proof effect is improved further in order to improve, the present invention's the 3rd improvement project is, be respectively equipped with the bar hole adapted with banded filter membrane thickness in the upper side and lower side of the sensing air chamber close to the two-port place before and after described air flue, described point of banded filter membrane passes through bar hole and the two-port of air flue is hidden.
Banded filter membrane gear train in dust-proof methane gas optical detection probe of the present invention can rotate by the banded filter membrane of continuous drive, and also the banded filter membrane of visual environment dust concentration gap drive rotates, and upgrade in time the banded filter membrane hidden on described air flue port.
Because banded filter membrane gear train of the present invention can drive banded filter membrane cycle rotation, and absorbent brush is utilized immediately to be removed by the dust on banded filter membrane, therefore can long-term work, avoid being negligent of changing filtering curtain and leading to security incident.In addition, the present invention also has only needs a set of banded filter membrane gear train can cover in the advantage of the two-port of air flue.
Accompanying drawing explanation
Fig. 1 is the structural representation (stereographic map) of a specific embodiment of dust-proof methane gas optical detection probe of the present invention.
Fig. 2 is the structural representation (stereographic map) of middle banded filter membrane gear train embodiment illustrated in fig. 1 and sensing air chamber.
Fig. 3 is the structural representation of position relationship between middle absorbent brush embodiment illustrated in fig. 1 and banded filter membrane and roller.
Fig. 4 is the STRUCTURE DECOMPOSITION figure (stereographic map) of middle absorbent brush embodiment illustrated in fig. 1.
Fig. 5 is the inner structure schematic diagram of middle absorbent brush embodiment illustrated in fig. 1.
Fig. 6 is using state figure embodiment illustrated in fig. 1.
Fig. 7 is the structural representation (stereographic map) of banded filter membrane gear train and sensing air chamber in another specific embodiment of dust-proof methane gas optical detection probe of the present invention.
Embodiment
Example 1
In order to probe inner structure be expressed clearly, Fig. 1 removes cover plate 6 above and eliminates banded filter membrane 9.
See Fig. 1, sensing air chamber 1 is the hexahedron of rectangle, is provided with the air flue 2 that pre-and post perforative xsect is rectangle, air flue about 2 sidewall is provided with C-Lens lens 3 relatively in its body; It is in hexahedral protection box 4 that described sensing air chamber 1 is located at shape, and this to protect in box 4 and is made up of two cover plates 6 before and after frame 5 and Gai Qi, and the middle part of each cover plate 6 is just provided with louver(-vre) 7 to the position of described air flue 2, and air flue 2 is communicated with air through louver(-vre) 7; Sensing air chamber 1 is provided with 4 screws 22 in the port both sides of air flue 2, accordingly, cover plate 6 is offered 4 through holes 23, utilizes screw to be fixed on cover plate 6 by sensing air chamber 1.
See Fig. 1 and composition graphs 2; banded filter membrane gear train is provided with between protection box 4 and sensing air chamber 1; this banded filter membrane gear train is made up of with the roller 8 of two be located on the downside of sensing air chamber 1 roller 8 of two that are located on the upside of sensing air chamber 1, and 4 rollers 8 are all bearing in the left side of the frame 5 of protection box 4.Banded filter membrane 9 be annular, and is looped around on 4 rollers 8 and the two-port of air flue 2 is hidden.
See Fig. 2 or Fig. 3, dust-proof effect is improved further in order to improve, be respectively equipped with the bar hole 16 adapted with banded filter membrane 9 thickness in the upper side and lower side of the sensing air chamber 1 close to the two-port place before and after air flue 2, banded filter membrane 9 passes through bar hole 16 and the two-port of air flue 2 is hidden.
See Fig. 1 and composition graphs 3 ~ 5; the outside of the banded filter membrane in the middle of the roller 8 of two on the downside of the centre of the roller 8 of two on the upside of sensing air chamber 1 and sensing air chamber 1 is respectively equipped with an absorbent brush 10; this absorbent brush 10 is made up of brush 11, air intake duct 12 and bristle 13; whole absorbent brush 10 is bearing in the left side of the frame 5 of protection box 4 by air intake duct 12, bristle 13 acts on banded filter membrane 9.The structure of described absorbent brush 10 is similar with conventional absorbent brush, its concrete structure is: be provided with cavity 14 in the body of brush 11, air intake duct 12 is located at the end of brush 11 and is communicated with cavity 14, bristle 13 is located at the lower surface of brush 11, this lower surface is provided with suction hole 15 between adjacent two bristles 13, and each suction hole 15 is all communicated with cavity 14.
See Fig. 6, the bolster of a roller 8 in described banded filter membrane gear train is connected with the output shaft of motor 17, can drive other three roller 8 synchronous axial system by this roller 8 by banded filter membrane 9.
See Fig. 6, first adopt pipeline 18 that the air intake duct 12 of two absorbent brush 10 is in parallel, then be connected with suction cleaner by pipeline 18, the dust kicked up and the dust be contained in banded filter membrane 9 micropore can be removed by absorbent brush 10.At banded filter membrane 9 when the rear and front end mouth cycle rotation of air flue 2, namely constantly upgrade the banded filter membrane 9 being positioned at air flue 2 rear and front end port part.
Example 2
See Fig. 7, this example is example 1 improvement project, and the difference of this improvement project example 1 is, the bolster of each roller 8 is equipped with belt pulley 20, and a driving belt 21 is looped around on all belt pulleys 20.Improvement project described in this example is equivalent to the banded filter membrane gear train cornerite described in example 1 to increase 4 times, and therefore can not skid, transmission is more reliable.
In this example, implementation method other than the above and using method are all same as Example 1.
Claims (4)
1. a dust-proof methane gas optical detection probe, this probe comprises protection box, be located at sensing air chamber in protection box and banded filter membrane; Wherein, described sensing gas indoor are provided with the air flue that pre-and post perforative xsect is rectangle, and described air flue left and right sidewall is provided with C-Lens lens relatively, and described air flue is communicated with air through the ventilation window be located on protection box, it is characterized in that,
Banded filter membrane gear train is provided with between described protection box and sensing air chamber, this banded filter membrane gear train is made up of with the roller of two be located on the downside of sensing air chamber the roller of two that are located on the upside of sensing air chamber, and wherein said roller is all bearing on protection box;
Described banded filter membrane is annular, and is looped around on described roller and the two-port of described air flue is hidden;
The outside of described banded filter membrane is provided with absorbent brush, and this absorbent brush is bearing on protection box, and bristle action is on banded filter membrane.
2. the dust-proof methane gas optical detection probe of one according to claim 1, it is characterized in that, the bolster of each roller is equipped with belt pulley, and a driving belt is looped around on all belt pulleys.
3. the dust-proof methane gas optical detection probe of one according to claim 1 and 2, is characterized in that, the bristle action of described absorbent brush is being positioned on the banded filter membrane in the middle of the roller of two of side, sensing gas room.
4. the dust-proof methane gas optical detection probe of one according to claim 3, it is characterized in that, be respectively equipped with the bar hole adapted with banded filter membrane thickness in the upper side and lower side of the sensing air chamber close to the two-port place before and after described air flue, described banded filter membrane passes through bar hole and the two-port of air flue is hidden.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025873.2A CN104634739B (en) | 2015-01-19 | 2015-01-19 | A kind of dust-proof methane gas optical detection probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025873.2A CN104634739B (en) | 2015-01-19 | 2015-01-19 | A kind of dust-proof methane gas optical detection probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104634739A true CN104634739A (en) | 2015-05-20 |
| CN104634739B CN104634739B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510025873.2A Active CN104634739B (en) | 2015-01-19 | 2015-01-19 | A kind of dust-proof methane gas optical detection probe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940887A (en) * | 2019-11-22 | 2020-03-31 | 中国民航大学 | Aviation cable fault diagnosis and detection probe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004027582A (en) * | 2002-06-25 | 2004-01-29 | Yoshiro Yamamoto | Flowing water dust collecting structure, water intake device and tidal power generation system for hydraulic power generation |
| US20070242720A1 (en) * | 2006-04-12 | 2007-10-18 | Eckles Robert D | Multi-pass optical cell with actuator for actuating a reflective surface |
| CN200971821Y (en) * | 2006-11-21 | 2007-11-07 | 王树平 | Air cleaner without maintenance |
| CN101865825A (en) * | 2010-06-11 | 2010-10-20 | 中国科学院安徽光学精密机械研究所 | Miniature open optical fiber gas sample cell |
| CN102879528A (en) * | 2012-10-08 | 2013-01-16 | 中国矿业大学 | Dustproof device and dustproof method for sensing probe |
| CN103264021A (en) * | 2013-06-06 | 2013-08-28 | 天津力神电池股份有限公司 | Dust removing device of lithium ion battery electrode materials |
-
2015
- 2015-01-19 CN CN201510025873.2A patent/CN104634739B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004027582A (en) * | 2002-06-25 | 2004-01-29 | Yoshiro Yamamoto | Flowing water dust collecting structure, water intake device and tidal power generation system for hydraulic power generation |
| US20070242720A1 (en) * | 2006-04-12 | 2007-10-18 | Eckles Robert D | Multi-pass optical cell with actuator for actuating a reflective surface |
| CN200971821Y (en) * | 2006-11-21 | 2007-11-07 | 王树平 | Air cleaner without maintenance |
| CN101865825A (en) * | 2010-06-11 | 2010-10-20 | 中国科学院安徽光学精密机械研究所 | Miniature open optical fiber gas sample cell |
| CN102879528A (en) * | 2012-10-08 | 2013-01-16 | 中国矿业大学 | Dustproof device and dustproof method for sensing probe |
| CN103264021A (en) * | 2013-06-06 | 2013-08-28 | 天津力神电池股份有限公司 | Dust removing device of lithium ion battery electrode materials |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940887A (en) * | 2019-11-22 | 2020-03-31 | 中国民航大学 | Aviation cable fault diagnosis and detection probe |
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