CN2879175Y - Multi-component ultraviolet on-line gas analyzing inetrument - Google Patents
Multi-component ultraviolet on-line gas analyzing inetrument Download PDFInfo
- Publication number
- CN2879175Y CN2879175Y CN 200520115661 CN200520115661U CN2879175Y CN 2879175 Y CN2879175 Y CN 2879175Y CN 200520115661 CN200520115661 CN 200520115661 CN 200520115661 U CN200520115661 U CN 200520115661U CN 2879175 Y CN2879175 Y CN 2879175Y
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- ultraviolet
- gas analyzer
- polycomponent
- line
- optical window
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Abstract
The utility model relates to an ultraviolet gas analyzer of online detection of gas density. The structure consists of an optical part and a circuit part: the optical part comprises an ultraviolet light source component (with ultraviolet light source), a right-angle prism, a convex mirror, a concave mirror, two optical windows, a pyramid prism, a condensing convex lens, an optical fiber and a spectrum meter. The circuit part comprises a power supply, a signal conversion and a data processing. The light signal is converted into the corresponding voltage signal through a series of reflection processing, transformed into the digital quantity storage via the signal conversion and then transmitted to the data processing for the analysis. The utility model uses the probe structure to avoid the effect on the environment measurement from the high dust concentration. The probe employs the accompanying strip to control the probe temperature to ensure that the stability and repeatable precision in the event of measurement can be obtained.
Description
Technical field
The utility model relates to a kind of flue gas, cellar for storing things gas, the CO of on-line measurement simultaneously of industrial flue, NO, NO of being applied to
2, SO
2, NH
3, O
2, O
3, CL
2Can absorb the on-line ultraviolet gas analyzer of ultraviolet gas with in the polycomponents such as BTX one or more.
Background technology
At present, the gas analyzer of international and domestic application mainly adopts galvanochemistry and two kinds of analytical technologies of optics.Anode electrochemistry analysis instrument properties of product instability, consistance is poor.For accurate measurement, all need to demarcate again before measuring each time, in use maintenance is bigger, and job costs are than higher.And the electrochemical analyser mission life is limited, can not long-term work in industry spot.The gas analyzer of optics mainly is to extract the sampling type device.The sampling type gas analyzer needs sampling thief, sample lines and analyser main control unit, and cost is than higher.The effect of sampling thief is that dust is filtered, so stop up easily in long-term operational process, often needs to change, and has increased application cost and maintenance cost.For SO
2The water-soluble gasmetry error of this class is very big, and the water-soluble formation acid of sour gas is very big to the sampling conduit corrosion.And the response speed of sampling type system is very slow, is unfavorable for the real-time control in the industry spot.
The utility model proposes for addressing the above problem.
The utility model content
The purpose of this utility model provides a kind of polycomponent on-line ultraviolet gas analyzer, adopt the sonde-type structure, utilize ultraviolet difference absorption spectrum technology to come the ultraviolet spectrum that records is analyzed, CO, NO, the NO of industrial sector industrial flue such as measurement electric power that can online in real time, environmental protection, oil, chemical industry, metallurgy, waste incineration or discharging
2, SO
2, H
2O, HF, HCL, CO
2Deng one or more gases in the multicomponent gas.
The polycomponent on-line ultraviolet gas analyzer that the utility model provides comprises light path part and circuit part, light path part comprises ultraviolet source assembly, right-angle prism, convex mirror, concave mirror, first optical window, second optical window, prism of corner cube, optically focused convex lens, optical fiber and spectrometer, and described ultraviolet source assembly comprises ultraviolet source; The ultraviolet light that described ultraviolet source sends enters into light path system through described right-angle prism reflection, by the optically focused convex lens focus, enters spectrometer by optical fiber then behind convex mirror, concave mirror and prism of corner cube successive reflex; Described circuit part is grouped into by power supply, conversion of signals part and data processing division; Light signal partly converts the digital quantity storage to by conversion of signals after being transformed into the correspondent voltage signal, is transferred to data processing section analysis then.
Preferably, also comprise probe segment in light path part, described probe segment is between first optical window and second optical window, and adopting hole is that the sintered stainless steel of 2 μ is as outer wall.
Preferably, described polycomponent on-line ultraviolet gas analyzer also comprises the air back-blowing device, in order to keep the cleaning of optical window and probe.
Preferably, described polycomponent on-line ultraviolet gas analyzer comprises that also attemperating unit is with the light path in the assurance gas transmissometer and the constant working temperature of circuit.
Adopt the sonde-type structure in the utility model, adopt ultraviolet difference absorption spectrum technology to come the ultraviolet spectrum that records is analyzed, thereby parse the concentration of tested gas.This device can be widely used in industrial sectors such as electric power, environmental protection, oil, chemical industry, metallurgy, waste incineration.Its characteristics are as follows:
1, measure multiple gases simultaneously, need not change any hardware, the assembly that only needs to add software just can be finished;
2, light path design uniqueness can adapt to the needs of various industry spot;
3, the sonde-type structure has been eliminated the influence of high dust concentration, has guaranteed the temperature of measurement environment, makes measurement more accurate, and repeatable accuracy is higher;
4, on-line real time monitoring, response is rapid, and the response time is less than 10 milliseconds;
5, do not have movable part, it is more accurate to measure;
6, cross interference can be eliminated by ultraviolet difference software;
7, range ability is big, can measure by ppm to percent concentration, and the measuring accuracy height can reach 1ppm;
8, inferred-zero drifting problem;
9, no sampling system, maintenance is low;
10, adapt to the needs of industry spot, can move in continuous 24 hours;
11, open good, convenient with other system group network.
Description of drawings
Fig. 1 is the system chart of the utility model polycomponent on-line ultraviolet gas analyzer;
Fig. 2 is the optical structure chart of the utility model polycomponent on-line ultraviolet gas analyzer.
Among the figure: 1: ultraviolet source; 2: the ultraviolet source assembly; 3: right-angle prism; 4: convex mirror; 5: concave mirror; 6: prism of corner cube; 7: flue; 8: the first optical windows; 9: the second optical windows; 10: power switch; 11: the optically focused convex lens; 12: optical fiber.
Embodiment
Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
In conjunction with Fig. 1 and Fig. 2, the ultraviolet ray that ultraviolet source 1 in the ultraviolet source assembly 2 sends, directly get on the right-angle prism 3, beam reflection is to convex mirror 4 then, reflection through convex mirror 4, light beam arrives on the concave mirror 5, enters into probe by the light beam after concave mirror 5 reflections through second optical window 9.Probe is fixed on the flue 7 by flange.Probe adopts sintered stainless steel as outer wall.The hole of sintered stainless steel is 2 μ, and gas molecule can see through and goes, but the particulate of dust can't see through and goes, and promptly the gas concentration between first optical window 8 and second optical window 9 is identical with flue gas concentration in the probe.Ultraviolet light beam to prism of corner cube 6 and be reflected, enters probe through first optical window 8 by the flue gas in popping one's head in and first optical window 8 again, after the flue gas absorption of pop one's head in interior, reflexes on the concave mirror 5 through second optical window 9.Through concave mirror 5 reflection back arrival convex mirror 4, reflex to right-angle prism 3 then after, reflect through right-angle prism 3.
Ultraviolet light beam after the right-angle prism reflection is through optically focused convex lens 11 optically focused and strengthen light intensity, enters into optical fiber then.Optical fiber imports to the spectrometer (not shown) with ultraviolet light and carries out subsequent treatment.
Spectrometer be one 11 grating foremost, the ultraviolet spectrum that ultraviolet source is sent is divided into 2048 parts.The back of grating is the CCD of a linear array, and each of 2048 parts of ultraviolet spectrums is all changed into voltage signal, again the A/D converter of voltage signal by one 12 is converted to digital quantity.So just entire ultraviolet spectrum has been formed 2048 4096 measure spectrum.Spectrometer can be saved as a binary file to the ultraviolet spectrum file, and the USB oral instructions by spectrometer are passed in the embedded computer in the gas transmissometer and make an explanation.
Being stored in the USB oral instructions of spectrum file by spectrometer in the spectrometer is passed in the embedded computer in the gas transmissometer and makes an explanation.Embedded computer calculates by the explanation to the spectrum file, can calculate the concentration of tested gas, and converts the industry standard signal output of corresponding 4-20mA to.In the present embodiment, the aforementioned spectral analysis software runs under the WindowsXP platform.
In order to guarantee the operation of system, system also has some additional assembly (not shown)s.Gas transmissometer and spectrometer need move under the situation of constant temperature, so we are provided with the temperature of temperature controller (not shown) pilot-gas transilluminator at 20 ± 1 ℃.In order to guarantee the cleaning of optical window and detecting head surface, also designed the air back-blowing device.The control junction box is used to finish probe and control junction box's the temperature control and the blowing function of probe.
The utility model structurally adopts the sonde-type structure.Probe adopts sintered stainless steel as outer wall, and the hole of sintered stainless steel is 2 μ, and gas molecule can see through and go, but the particulate of dust can't see through and goes, and this has just been avoided the influence of dust in measuring process.
Claims (4)
1, a kind of polycomponent on-line ultraviolet gas analyzer is characterized in that: this polycomponent on-line ultraviolet gas analyzer comprises light path part and circuit part;
Described light path part comprises ultraviolet source assembly (2), right-angle prism (3), convex mirror (4), concave mirror (5), first optical window (8), second optical window (9), prism of corner cube (6), optically focused convex lens (11), optical fiber (12) and spectrometer, and described ultraviolet source assembly (2) comprises ultraviolet source (1); Reflection enters into light path system to the ultraviolet light that described ultraviolet source (1) sends through described right-angle prism (3), behind convex mirror (4), concave mirror (5) and prism of corner cube (6) successive reflex, focus on, enter spectrometer by optical fiber then by optically focused convex lens (11);
Described circuit part is grouped into by power supply, conversion of signals part and data processing division; Light signal partly converts the digital quantity storage to by conversion of signals after being transformed into the correspondent voltage signal, is transferred to data processing section analysis then.
2, polycomponent on-line ultraviolet gas analyzer as claimed in claim 1, it is characterized in that in light path part, also comprising probe segment, described probe segment is positioned between first optical window (8) and second optical window (9), and adopting hole is that the sintered stainless steel of 2 μ is as outer wall.
3, polycomponent on-line ultraviolet gas analyzer as claimed in claim 1 is characterized in that described polycomponent on-line ultraviolet gas analyzer also comprises the air back-blowing device.
4, polycomponent on-line ultraviolet gas analyzer as claimed in claim 3 is characterized in that described polycomponent on-line ultraviolet gas analyzer also comprises attemperating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115661 CN2879175Y (en) | 2005-08-02 | 2005-08-02 | Multi-component ultraviolet on-line gas analyzing inetrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115661 CN2879175Y (en) | 2005-08-02 | 2005-08-02 | Multi-component ultraviolet on-line gas analyzing inetrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2879175Y true CN2879175Y (en) | 2007-03-14 |
Family
ID=37861595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520115661 Expired - Fee Related CN2879175Y (en) | 2005-08-02 | 2005-08-02 | Multi-component ultraviolet on-line gas analyzing inetrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2879175Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230891A (en) * | 2011-03-15 | 2011-11-02 | 西安泰戈分析仪器有限责任公司 | Data processing system for ultraviolet optical multicomponent gas analyzer |
| CN104089878A (en) * | 2014-07-16 | 2014-10-08 | 上海和辉光电有限公司 | Transmissometer |
| CN106124441A (en) * | 2016-06-21 | 2016-11-16 | 杭州泽天科技有限公司 | A kind of return ultralow range uv analyzer of single and the method for analysis thereof |
| CN109477791A (en) * | 2016-07-29 | 2019-03-15 | 国立大学法人德岛大学 | Concentration measurement apparatus |
-
2005
- 2005-08-02 CN CN 200520115661 patent/CN2879175Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230891A (en) * | 2011-03-15 | 2011-11-02 | 西安泰戈分析仪器有限责任公司 | Data processing system for ultraviolet optical multicomponent gas analyzer |
| CN104089878A (en) * | 2014-07-16 | 2014-10-08 | 上海和辉光电有限公司 | Transmissometer |
| CN106124441A (en) * | 2016-06-21 | 2016-11-16 | 杭州泽天科技有限公司 | A kind of return ultralow range uv analyzer of single and the method for analysis thereof |
| CN109477791A (en) * | 2016-07-29 | 2019-03-15 | 国立大学法人德岛大学 | Concentration measurement apparatus |
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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 |
Granted publication date: 20070314 Termination date: 20140802 |
|
| EXPY | Termination of patent right or utility model |