CN203798730U - Underground combustible gas concentration detector - Google Patents
Underground combustible gas concentration detector Download PDFInfo
- Publication number
- CN203798730U CN203798730U CN201420201204.7U CN201420201204U CN203798730U CN 203798730 U CN203798730 U CN 203798730U CN 201420201204 U CN201420201204 U CN 201420201204U CN 203798730 U CN203798730 U CN 203798730U
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- CN
- China
- Prior art keywords
- gas concentration
- box body
- uviol lamp
- concentration detector
- spectral receiver
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- Expired - Fee Related
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
An underground combustible gas concentration detector comprises a semi-sealed box, gas windows are formed in the two sides of the box, the outer surface of each gas window is provided with a layer of isolating membrane, the isolating membranes can isolate moisture, gas can pass through the isolating membranes, two gas concentration detection assemblies are arranged inside the box, each gas concentration detection assembly comprises a spectrum receiver and an optical cable pin which is connected with the lower portion of the spectrum receiver and extends out of the box, at the same time, an ultraviolet lamp is arranged above each spectrum receiver, and a reflection board reflecting ultraviolet light is arranged at the position, opposite to each ultraviolet lamp, of the inner side of the box. The underground combustible gas concentration detector has the advantages of being small in size, little in interference, capable of outputting optical signals, low in working temperature, reliable in performance and especially suitable for being used under a coal mine.
Description
Technical field
The utility model relates to gas concentration inspect device field, is specially a kind of down-hole combustable gas concentration detector.
Background technology
It is generally acknowledged; inflammable gas is a maximum potential safety hazard in the industries such as colliery, oil, chemical industry, oil; in the particular place of these industries; when inflammable gas is put aside critical concentration in certain space, one meets naked light and will produce explosion accident; badly influence property and personal safety; thereby, conventionally can be provided with combustable gas concentration detector in these places in order to the combustable gas concentration in monitoring of environmental.
Existing some combustable gas concentration detectors on the market, its measuring accuracy is low, Measurement sensibility is poor and measured value can produce fluctuation along with the variation of environment temperature, humidity and gas temperature, water cut, measured value deviation is larger, be only suitable in some open occasions, and for this semi-hermetic environment that is similar to coal mine, because in well, the temperature difference is large sooner or later, unstable, the floating dust of gas water content is many, causes these common combustable gas concentration detectors inapplicable; Also having on the market for the particular surroundings of mine and the combustable gas concentration detector designing, but the common complex structure of these combustable gas concentration detectors, expensive, and use traditional gas sensor must possess enough large size guarantee and there is flame proof effect, define the use location of this class combustable gas concentration detector, increased cost, meanwhile, its internals is meticulous, repellence for dust, liquid is poor, causes it to be difficult to safeguard.
Utility model content
The technical matters that the utility model solves is to provide a kind of down-hole combustable gas concentration detector, to solve the defect in above-mentioned background technology.
A kind of down-hole combustable gas concentration detector, comprise half sealing box body, its box body both sides have transom window, on the outside surface of transom window, being provided with one deck isolation moisture also can be by the barrier film of gas, in box body, be provided with two groups of gas concentration detection components, described gas concentration detection components comprises spectral receiver and is connected to spectral receiver bottom and stretches out the optical cable pin of box body, simultaneously, top at spectral receiver is also provided with uviol lamp, is provided with the reflecting plate of light reflection ultraviolet on the opposite of the uviol lamp of box body inner side.
In the utility model, described uviol lamp is unidirectional shot-light, keeps the angle of 68 ° ~ 76 ° with surface level, and the difference in height of uviol lamp and spectral receiver is irradiated to spectral receiver center position with the reflected light of uviol lamp and is as the criterion.
In the utility model, the surface of described spectral receiver scribbles the photosensitive gel that a layer thickness is 50 ~ 80 μ m, for enhanced spectrum signal.
In the utility model, described uviol lamp is by being arranged on the rechargable power supplies energy supply in box body.
The utility model utilizes the propagation characteristic design of ultraviolet light in inflammable gas, by detecting the variation difference of ultraviolet light incident gas front and back refractive index, measures combustable gas concentration in Minepit environment gas.In this process, although the inflammable gas component in different mines is different, but, in same mine, if there is not environmental catastrophe, inflammable gas component and the ratio of its generation can not change substantially, what change can be only concentration, analyzes by the inflammable gas component in a certain mine, draws experiment value, this experiment value is worth to input database as a comparison, can implements the combustable gas concentration in monitoring mine by correlative value.
Beneficial effect: the utility model has overcome the ubiquitous working temperature of traditional gas sensor higher (needing heating), the larger-size defect of explosion-protection equipment, utilize light activated element to detect combustable gas concentration, have advantages of that size is little, interfere less, highly sensitive, working temperature is low, output optical signal, can effectively reduce the restriction of the reason of sensor to gas-detecting device range of application own, be particularly suitable for the subsurface environment that circulation of air is relatively delayed.
Brief description of the drawings
Fig. 1 is the interior schematic diagram of the box of the utility model preferred embodiment.
Fig. 2 is the profile schematic diagram of the utility model preferred embodiment.
Wherein: 1-water spilage tray, 2-box body, 3-uviol lamp, 4-rechargable power supplies, 5-spectrum receiving element, 6-optical cable pin, 7-transom window, 8-reflecting plate, 501-spectral receiver, 502-photosensitive gel.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
In preferred embodiment referring to a kind of down-hole combustable gas concentration detector of Fig. 1, Fig. 2, the agent structure of combustable gas concentration detector is the box body 2 of a semitight, these box body 2 both sides have transom window 7, the outside surface of transom window 7 is provided with one deck can isolate moisture can be by the barrier film of gas, simultaneously, outer lower portion at transom window 7 is also provided with water spilage tray 1, for connecing down the globule under transom window 7 oozes.
In box body 2, be provided with two groups of gas concentration detection components, gas concentration detection components comprises spectrum receiving element 5, the agent structure of spectrum receiving element 5 is a spectral receiver 501, spectral receiver 501 bottoms connect optical cable pin 6, and by optical cable pin 6 external data processors, meanwhile, scribble the photosensitive gel 502 that a layer thickness is 80 μ m on spectral receiver 501 surfaces, for enhanced spectrum signal; Every group of gas concentration detection components independent measurement data, for reducing measuring error.
In the present embodiment, it is the unidirectional shot-light of ultraviolet light of 0.2 μ m that uviol lamp 3 is selected wavelength, and utilize rechargable power supplies 4 to power, uviol lamp 3 is positioned at spectrum receiving element 5 tops, keep the angle of 76 ° with surface level, and adjust the absolute position of itself and spectrum receiving element 5 in the vertical directions, make uviol lamp 3 be irradiated to the center position of spectral receiver 501 through the reflected light of reflecting plates 8.
The ultraviolet light that uviol lamp 3 is launched carries out spectrum amplification by photosensitive gel 502 in box body 2 after reflecting plate 8 reflections, then received by spectral receiver 501, spectrum change by recording ultraviolet light is by it and be converted into light signal, export by optical cable pin 6, carry out data processing through external PC end, after contrasting with the correlation data of database, can be used to measure the combustable gas concentration in relevant environment.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. a down-hole combustable gas concentration detector, comprise half sealing box body, its feature is, described box body both sides have transom window, on the outside surface of transom window, being provided with one deck isolation moisture also can be by the barrier film of gas, in box body, be provided with two groups of gas concentration detection components, described gas concentration detection components comprises spectral receiver and is connected to spectral receiver bottom and stretches out the optical cable pin of box body, simultaneously, top at spectral receiver is also provided with uviol lamp, is provided with the reflecting plate of light reflection ultraviolet on the opposite of the uviol lamp of box body inner side.
2. a kind of down-hole according to claim 1 combustable gas concentration detector, it is characterized in that, described uviol lamp is unidirectional shot-light, keep the angle of 68 ° ~ 76 ° with surface level, and the difference in height of uviol lamp and spectral receiver is irradiated to spectral receiver center position with the reflected light of uviol lamp and is as the criterion.
3. a kind of down-hole according to claim 1 combustable gas concentration detector, is characterized in that, the surface of described spectral receiver scribbles the photosensitive gel that a layer thickness is 50 ~ 80 μ m.
4. a kind of down-hole according to claim 1 combustable gas concentration detector, is characterized in that, described uviol lamp is by being arranged on the rechargable power supplies energy supply in box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201204.7U CN203798730U (en) | 2014-04-24 | 2014-04-24 | Underground combustible gas concentration detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201204.7U CN203798730U (en) | 2014-04-24 | 2014-04-24 | Underground combustible gas concentration detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203798730U true CN203798730U (en) | 2014-08-27 |
Family
ID=51380935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420201204.7U Expired - Fee Related CN203798730U (en) | 2014-04-24 | 2014-04-24 | Underground combustible gas concentration detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203798730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426342A (en) * | 2019-09-02 | 2019-11-08 | 国网电力科学研究院武汉南瑞有限责任公司 | Cable slack layer ablation state Physico-chemical tests system and method |
-
2014
- 2014-04-24 CN CN201420201204.7U patent/CN203798730U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426342A (en) * | 2019-09-02 | 2019-11-08 | 国网电力科学研究院武汉南瑞有限责任公司 | Cable slack layer ablation state Physico-chemical tests system and method |
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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: 20140827 Termination date: 20170424 |