CN202649108U - Air chamber structure used for non-dispersion type light spectrum gas analyzer - Google Patents
Air chamber structure used for non-dispersion type light spectrum gas analyzer Download PDFInfo
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- CN202649108U CN202649108U CN 201220324303 CN201220324303U CN202649108U CN 202649108 U CN202649108 U CN 202649108U CN 201220324303 CN201220324303 CN 201220324303 CN 201220324303 U CN201220324303 U CN 201220324303U CN 202649108 U CN202649108 U CN 202649108U
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- chamber shell
- inner casing
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Abstract
The utility model belongs to the technical field of a photoelectricity and micro electro mechanical system, relates to an air chamber structure and particularly relates to an air chamber structure used for non-dispersion type light spectrum gas analyzer. The air chamber structure comprises an inner air chamber shell, a filter element, an outer air chamber shell, a front cover, a rear cover, a transmitting end and a receiving end, wherein the inner air chamber shell and the outer air chamber shell are both of circular ring body structures, small holes are uniformly distributed on the circumference of the inner air chamber shell, and the inner diameter of the outer air chamber shell is larger than the outer diameter of the inner air chamber shell; and through holes are formed in the front cover and the rear cover. The utility model relates to a new straight air chamber structure, the influence of the gas concentration on the calculation result, caused by the pollution of extremely few dust, can be lowered greatly, the parallel light is identical to an empirical equation expressed by a Beer-Lambert law, and the difficulty of a quantitative algorithm of the gas concentration can be lowered.
Description
Technical field
The utility model belongs to photoelectricity and micro-electromechanical system field, relates to a kind of air chamber structure, particularly a kind of air chamber structure for on-dispersive type spectrum gas analyzer.
Background technology
Detection for common toxic gas, inorganic poison gas particularly, the general gas analyzer of special use that adopts detects, and is called the spectroscopic methodology gas analyzer here based on the gas analyzer of Spectrum Absorption Principle, a kind of exactly gas analyzer with large development future.Toxic and harmful analyser gas analyzer take spectroscopic methodology as the basis mainly is used in the high precision survey that the industries such as industry, agricultural, medical treatment, intelligent building, analytical instrument are used for gas concentration at present, as is used in the fields such as pollutant monitoring, analysing tail gas of vehicle, gas and combustible gas detection, gas composition analysis, medical monitoring equipment, air quality analyses, ultimate analysis instrument.
Principle of work based on the on-dispersive type gas analyzer of Spectrum Absorption Principle can be described below:
Toxic and harmful is followed Beer-Lambert law to being absorbed in of its feature spectral coverage spectral energy in the low strength range:
P=P
0Exp(-kcl)
P wherein
0Be the energy that light source produces, P be the energy that produces of light source by the environment that has toxic and harmful after remaining energy, k is the spectral absorptance of toxic and harmful, l be light source apart from the distance of spectral detector, c is the concentration of toxic and harmful.According to Beer-Lambert law, just can detect in practice the concentration of toxic and harmful.
On-dispersive type gas analyzer based on Spectrum Absorption Principle generally is comprised of five parts such as air chamber, shell, master control borad, audible-visual annunciator and telepilots on hardware, air chamber then plays responsible energy emission, transmission, reception, and gas concentration signal to be measured is converted into the effect of accessible electric signal, be the core component of complete machine, its performance quality will directly affect the performance of complete machine.In order to obtain larger absorbing amount, the gas of explaining according to Lambert-Beer's law depends on light path and this ultimate principle of gas concentration to the Optical Absorption degree, prior art prolongs light path by make the grooved optical channel with high reflectance in short space, it is ellipsoid shape air chamber structure
Its shortcoming be following some:
1, complex process, cost height:
Technique is made comparatively complicated, needs high-precision grinding, polishing and coating spectral wavelength to be had the coating process process of the metal inner surfaces such as precious metal-platinum, gold of high reflectance, causes the cost rising.
2, measuring accuracy is affected by environment easily:
In some application circumstances, after instrument works long hours technically first because of reflecting surface by the dust pollution of micron order yardstick after, reflectivity sharply descends, and the gas concentration calculating empirical equation of gas analyzer is changed, and causes measurement of concetration inaccurate; The empirical equation of second explaining because of Lambert-Beer's law is the directional light that sends for light source, and after repeatedly the side is penetrated, will depart from Lambert-Beer's law, particularly depart from situation in gas concentration than Gao Shiqi and just seem even more serious, will make troubles to the Quantitative algorithm of gas concentration so prolong the air chamber design proposal of light path by in short space, making the grooved optical channel with high reflectance.
3, the contradictory problems of dust and moisture and response time is difficult to solve:
Dust and moisture and sensor response speed are conflicts, and especially for the mining on-dispersive type gas analyzer under the coal mine, as not solving the dust and moisture problem, its advantage will be replaced by the inferior position that environment under the coal mine causes.Existing dust and moisture technical measures are to cover the dust and moisture hydrophobicity filtration membrane of putting before air inlet of air chamber place and the spectral detector on the small ventilative window of circuit board,
The utility model content
Exist in the existing on-dispersive type gas analyzer technology of preparing based on Spectrum Absorption Principle in order to solve, owing to adopt the caused complex process of ellipsoid shape air chamber structure, cost is high, measurement precision of gas analyzer is affected by environment easily, the technical matters that the contradictory problems of dust and moisture and response time is difficult to solve etc., the present invention proposes a kind of air chamber structure for on-dispersive type spectrum gas analyzer, in the hope of based in the design of the on-dispersive type gas analyzer of Spectrum Absorption Principle and making, and then be applied in the on-line monitoring field of toxic and harmful.
To achieve these goals, the technical solution of the utility model is a kind of air chamber structure for on-dispersive type spectrum gas analyzer of design, comprises the air chamber inner casing, crosses filter core, air chamber shell, protecgulum, bonnet, transmitting terminal and receiving end; The gentle chamber enclosure of described air chamber inner casing is the torus structure, the uniform aperture that has on the periphery of described air chamber inner casing, and the internal diameter of described air chamber shell is greater than the external diameter of air chamber inner casing; Have through hole at protecgulum and bonnet;
Its annexation is: the described filter core of crossing is wrapped in air chamber inner casing outside surface, be installed in the air chamber inner casing that was enclosed with filter core in the air chamber shell and make between the gentle chamber enclosure of air chamber inner casing and leave the gap as gas delivery passage, protecgulum all is fixedly connected with the two ends of bonnet with the gentle indoor shell of air chamber shell, gas delivery passage between the gentle indoor shell of the through hole of protecgulum and bonnet and air chamber shell connects, be connected with transmitting terminal in the protecgulum end, be connected with receiving end at the bonnet end face.
The described filter core of crossing is that the folding hydrophobic type of annulus cylindricality is crossed filter core.
Described protecgulum is to be connected by bolt or screw with the gentle indoor shell of air chamber shell.
Described bonnet is to be connected by bolt or screw with the gentle indoor shell of air chamber shell.
Its workflow is: be electric current and exported by the transmitting terminal energy conversion, electric current output is to enter filter core by the gas delivery passage between transmitting terminal and the gentle indoor shell of air chamber shell, enter in the inner chamber of air chamber inner casing through the aperture that has on the air chamber inner casing again, be transferred to again receiving end, enter at last one-chip computer or the DSP digital signal processor calculates, calculate concentration according to mathematical model and relevant parameters.
Advantage of the present utility model and beneficial effect are:
One, taked the simplest straight air chamber structure on the related a kind of new air chamber structure of the utility model, do not need high-precision grinding, polishing and spectral wavelength is had the coating process process of the metal inner surface such as precious metal-platinum, gold of high reflectance, have the advantages that production technology is simple, cost is low.
Two, the related a kind of new air chamber structure of the utility model has been taked double-decker at straight air chamber structure, being arranged at the folding hydrophobic type of annulus cylindricality between air chamber inner tube and the outer tube crosses filter core and has the characteristics larger than the specific surface area of prior art filtering membrane, when greatly having improved responding ability, greatly prolonged the stream time of system.
Three, the related a kind of new straight air chamber structure of the utility model, not only decrease the impact on the result of calculation of gas concentration that brings behind the only a few dust pollution, and the directional light empirical equation that Lambert-Beer's law explains that coincide, reduced the difficulty of the Quantitative algorithm of gas concentration.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Wherein, 1-air chamber shell; 2-air chamber inner casing; The 3-transmitting terminal; The 4-receiving end; 5-crosses filter core; The 6-protecgulum; The 7-bonnet.
Embodiment
Below in conjunction with drawings and Examples embodiment of the present utility model is further described, following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, the technical scheme of the utility model implementation is: a kind of air chamber structure for on-dispersive type spectrum gas analyzer comprises air chamber inner casing 2, crosses filter core 5, air chamber shell 1, protecgulum 6, bonnet 7, transmitting terminal 3 and receiving end 4; Described air chamber inner casing 2 gentle chamber enclosures 1 are the torus structure, the uniform aperture that has on the periphery of described air chamber inner casing 2, and the internal diameter of described air chamber shell 1 is greater than the external diameter of air chamber inner casing 2; Have through hole at protecgulum 6 and bonnet 7;
Its annexation is: the described filter core 5 of crossing is wrapped in air chamber inner casing 2 outside surfaces, the air chamber inner casing 2 that was enclosed with filter core 5 is installed in the air chamber shell 1 and makes between the air chamber inner casing 2 gentle chamber enclosures 1 leave the gap as gas delivery passage, protecgulum 6 all is fixedly connected with the two ends of bonnet 7 with air chamber shell 1 gentle indoor shell 2, gas delivery passage between the through hole of protecgulum 6 and bonnet 7 and the air chamber shell 1 gentle indoor shell 2 connects, be connected with transmitting terminal 3 in protecgulum 6 ends, be connected with receiving end 4 at bonnet 7 end faces.
The described filter core 5 of crossing is crossed filter core for the folding hydrophobic type of annulus cylindricality.
Described protecgulum 6 is to be connected by bolt or screw with air chamber shell 1 gentle indoor shell 2.
Described bonnet 7 is to be connected by bolt or screw with air chamber shell 1 gentle indoor shell 2.
The above only is preferential embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. an air chamber structure that is used for on-dispersive type spectrum gas analyzer is characterized in that: comprise air chamber inner casing (2), cross filter core (5), air chamber shell (1), protecgulum (6), bonnet (7), transmitting terminal (3) and receiving end (4); The gentle chamber enclosure of described air chamber inner casing (2) (1) is the torus structure, the uniform aperture that has on the periphery of described air chamber inner casing (2), and the internal diameter of described air chamber shell (1) is greater than the external diameter of air chamber inner casing (2); Have through hole at protecgulum (6) and bonnet (7);
Its annexation is: the described filter core (5) of crossing is wrapped in air chamber inner casing (2) outside surface, the air chamber inner casing (2) that will be enclosed with filter core (5) is installed in the air chamber shell (1) and makes between the gentle chamber enclosure of air chamber inner casing (2) (1) and leaves the gap as gas delivery passage, protecgulum (6) all is fixedly connected with the two ends of bonnet (7) with the gentle indoor shell of air chamber shell (1) (2), gas delivery passage between the through hole of protecgulum (6) and bonnet (7) and the gentle indoor shell of air chamber shell (1) (2) connects, be connected with transmitting terminal (3) at protecgulum (6) end face, be connected with receiving end (4) at bonnet (7) end face.
2. a kind of air chamber structure for on-dispersive type spectrum gas analyzer according to claim 1 is characterized in that: the described filter core (5) of crossing is crossed filter core for the annulus cylindricality folds hydrophobic type.
3. a kind of air chamber structure for on-dispersive type spectrum gas analyzer according to claim 1 and 2, it is characterized in that: described protecgulum (6) is to be connected by bolt or screw with the gentle indoor shell of air chamber shell (1) (2).
4. a kind of air chamber structure for on-dispersive type spectrum gas analyzer according to claim 1 and 2, it is characterized in that: described bonnet (7) is to be connected by bolt or screw with the gentle indoor shell of air chamber shell (1) (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220324303 CN202649108U (en) | 2012-07-05 | 2012-07-05 | Air chamber structure used for non-dispersion type light spectrum gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220324303 CN202649108U (en) | 2012-07-05 | 2012-07-05 | Air chamber structure used for non-dispersion type light spectrum gas analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202649108U true CN202649108U (en) | 2013-01-02 |
Family
ID=47418200
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220324303 Expired - Fee Related CN202649108U (en) | 2012-07-05 | 2012-07-05 | Air chamber structure used for non-dispersion type light spectrum gas analyzer |
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| CN (1) | CN202649108U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721659A (en) * | 2012-07-05 | 2012-10-10 | 昆明斯派特光谱科技有限责任公司 | Air chamber structure for nondispersive spectrum gas analyser |
| CN106596406A (en) * | 2016-12-26 | 2017-04-26 | 昆明斯派特光谱科技有限责任公司 | Gas chamber structure of non-dispersion type spectrum gas analyzer |
-
2012
- 2012-07-05 CN CN 201220324303 patent/CN202649108U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721659A (en) * | 2012-07-05 | 2012-10-10 | 昆明斯派特光谱科技有限责任公司 | Air chamber structure for nondispersive spectrum gas analyser |
| CN106596406A (en) * | 2016-12-26 | 2017-04-26 | 昆明斯派特光谱科技有限责任公司 | Gas chamber structure of non-dispersion type spectrum gas analyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Kunming Erkang Science and Technology Co., Ltd. Assignor: Kunming Sipaite Spectrum Technology Co.,Ltd. Contract record no.: 2014530000033 Denomination of utility model: Air chamber structure for nondispersive spectrum gas analyser Granted publication date: 20130102 License type: Exclusive License Record date: 20140424 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20130102 Termination date: 20190705 |