CN203519385U - In-situ type laser gas analyzer - Google Patents
In-situ type laser gas analyzer Download PDFInfo
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- CN203519385U CN203519385U CN201320525141.6U CN201320525141U CN203519385U CN 203519385 U CN203519385 U CN 203519385U CN 201320525141 U CN201320525141 U CN 201320525141U CN 203519385 U CN203519385 U CN 203519385U
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Abstract
The utility model belongs to the technical field of on-line monitoring equipment, and in particular discloses an in-situ type laser gas analyzer which solves the problems of extract type component loss, slow response, high sample gas pretreatment requirements, in-situ environment interference, pollution block and the like. According to the analyzer, a sampling probe consists of an extraction filtering device and a back flushing device; a gas chamber unit is connected with a sampling device; the sampling device is connected with a gas pretreatment device; a gas detection unit in a gas analysis unit is connected with a data processing unit; the data processing unit is further connected with a man-computer display unit and a data output interface; the sampling probe is connected with a tracing pipe; the tracing pipe is connected with the gas pretreatment device in an analysis cabinet. The analyzer is capable of effectively avoiding the problems of blocking and component loss, and has the advantages of rapid response speed, slight measurement value fluctuation, accuracy in measurement, high reliability, small investment, simplicity in equipment maintenance and the like.
Description
Technical field
The utility model belongs to the technical field of on-line monitoring equipment, specifically a kind of formula laser gas analyzer in place.
Background technology
On-line monitoring technique is, under the condition in operation the situation of equipment to be carried out continuously or monitoring regularly at equipment under test.Due to the residing particular surroundings of Site Detection instrument, high pressure, high humidity, high dust, high pollution substrate concentration etc. often, existing market has original position formula and extraction-type method more, extraction-type method is that sample gas enters analytic unit after accompanying heat, pre-service again, sample gas is cleaner, to analyzing less pollution, system stability is better, but because analyser requires very high to the clean level of sample gas, must there be a set of complete flue gas, cooling, water scavenging system, the pipeline of sample gas process is long, joint is more, easily causes component to lose; Original position formula method is directly measured through measured medium for measuring light, there is no sampling processing device, and measuring accuracy is high, but the method directly contacts measured medium, exists the factors such as moisture and vibration to disturb, and easily by dielectric corrosion and obstruction.
Summary of the invention
The utility model requires environmental interference, the contamination and plugging problem of high and original position formula for removable component loss, low-response, the pre-service of sample gas, a kind of formula laser gas analyzer in place is provided.
The utility model is taked following technical scheme: a kind of formula laser gas analyzer in place, comprises and extract filtration unit, heating arrangement, trace pipe, gas pre-service, sampling apparatus, back-blowing device, optical unit, air chamber unit, gas detection cell, temperature pressure compensation unit, data processing unit, man-machine display unit, data output interface, system calibration device;
Described optical unit, air chamber unit, gas detection cell, temperature pressure compensation unit connect to form gas analysis unit successively;
Described extraction filtration unit and back-blowing device form sampling probe
Air chamber unit in gas analysis unit is connected with sampling apparatus, sampling apparatus is connected with gas pre-service, gas detection cell in gas analysis unit is connected with data processing unit, data processing unit is also connected with man-machine display unit, data output interface respectively, by gas pre-service, sampling apparatus, gas analysis unit, data processing unit, man-machine display unit and data output interface composition analysis cabinet;
Described sampling probe is connected with trace pipe, and trace pipe is connected with the gas pre-service of analyzing in cabinet.
Described extraction filtration unit comprises the primary filter and the cascade filtration being connected with trace pipe being communicated with sample gas; the additional protection sleeve of primary filter; cascade filtration comprises filter core, the combination of seat burr and is placed on its outer heating cylindrical shell; back-blowing device comprises two-way; one tunnel is for blowing out sediment from cascade filtration filter core inside the blowback gas circuit of filter core; one tunnel is the circulation helical shape groove blowback gas circuit of offering on the cartridge heater intracoelomic cavity of filter core outside; the former is pulsed blowback, and the latter is continuation blowback.More effective the rolling out to probe of the sediment that is collected at cartridge surface that the second tunnel can be blown afloat in the first via.
Described seat burr combination top arranges three gas accesses, a gas access I is by blowback air source and cascade filtration filter core internal communication, a gas access I is by blowback air source and heating cylindrical shell internal communication, and another gas connection II is communicated with sample gas outlet in cascade filtration with sample lines.
Formula laser gas analyzer in place also comprises that system calibration device comprises calibration gas source, calibration gas proportional pressure valve and servo controller, calibration gas source connects calibration gas proportional pressure valve, calibration gas proportional pressure valve is arranged in analyzes cabinet, its outlet is simultaneously connected to for being communicated with the blowback import of the secondary filter core inside of sampling probe by polytetrafluoro pipe, three-way pipe, during calibration, calibration gas enters sampling probe from blowback gas circuit, along sample lines, enter analysis cabinet again, because calibration function carries out when different with sampling functions, so do not interfere with each other.Calibration gas proportional pressure valve is controlled by servo controller, the control end connection data processing unit of servo controller.
The utility model is compared with extraction-type with existing original position formula, and extraction tube is short out, is difficult for causing component to lose, and fast response time, measured value fluctuate little, carrying out the structural design of high-efficient reverse blowing aspect the obstruction of probe, supports on-line calibration simultaneously.
Formula laser gas analyzer in place described in the utility model; sample gas is short through pipeline; filtering aspect blowback protection, system automatic on-line calibration aspect, provide good solution; effectively avoid blockage problem; component is lost problem, has the advantages such as fast response time, measured value fluctuation is little, measurement is accurate, reliability is high, cost of investment is low, plant maintenance is simple.
Accompanying drawing explanation
Fig. 1 is the utility model structure principle chart,
Fig. 2 is that the utility model extracts filtration unit cascade filtration structural representation,
In figure: 1-extracts filtration unit, 2-heating arrangement, 3-trace pipe, the pre-service of 4-gas, 5-sampling apparatus, 6-back-blowing device, 7-optical unit, 8-air chamber unit, 9-gas detection cell, 10-temperature pressure compensation unit, 11-data processing unit, 12-man-machine display unit, 13-data output interface, 14-system calibration device, 15-gas analysis unit, 16-sampling probe, 17-analyzes cabinet
1.1-cascade filtration filter core, the combination of 1.2-seat burr, 1.3-heats cylindrical shell, 1.4-gas access I, 1.5-gas access II, 1.6-gas access III.
Embodiment
By reference to the accompanying drawings embodiment of the present utility model is described further.
As shown in Figure 1, a formula laser gas analyzer in place, comprises and extracts filtration unit 1, heating arrangement 2, trace pipe 3, gas pre-service 4, sampling apparatus 5, back-blowing device 6, optical unit 7, air chamber unit 8, gas detection cell 9, temperature pressure compensation unit 10, data processing unit 11, man-machine display unit 12, data output interface 13, system calibration device 14;
Described optical unit 7, air chamber unit 8, gas detection cell 9, temperature pressure compensation unit 10 connect to form gas analysis unit 15 successively;
Described extraction filtration unit 1 and back-blowing device 6 form sampling probe 16;
Air chamber unit 8 in gas analysis unit 15 is connected with sampling apparatus 5, sampling apparatus 5 is connected with gas pre-service 4, gas detection cell 9 in gas analysis unit 15 is connected with data processing unit 11, data processing unit 11 is also connected with man-machine display unit 12, data output interface 13 respectively, by gas pre-service 4, sampling apparatus 5, gas analysis unit 15, data processing unit 11, man-machine display unit 12 and data output interface 13 composition analysis cabinets 17;
Described sampling probe 16 is connected with trace pipe 3, and trace pipe 3 is connected with the gas pre-service 4 of analyzing in cabinet 17.
Described extraction filtration unit 1 comprises the primary filter and the cascade filtration being connected with trace pipe being communicated with sample gas; the additional protection sleeve of primary filter; cascade filtration comprises filter core 1.1, seat burr combination 1.2 and is placed on its outer heating cylindrical shell 1.3; back-blowing device 6 comprises two-way; one tunnel is for blowing out sediment from cascade filtration filter core 1.1 inside the blowback gas circuit of filter core; one tunnel is that a seat burr for fixedly filter core combines the circulation helical shape groove blowback gas circuit of offering on 1.2 inner chambers; the former is pulsed blowback, and the latter is continuation blowback.More effective the rolling out to probe of the sediment that is collected at cartridge surface that can blow afloat in the first via.
Described seat burr combines 1.2 tops three gas accesses is set, a gas access I 1.4 is by blowback air source and cascade filtration filter core 1.1 internal communication, a gas access II 1.5 combines 1.2 internal communication by blowback air source and seat burr, and another gas connection III 1.6 is communicated with sample gas outlet in cascade filtration with sample lines.
Described system calibration device comprises calibration gas source, calibration gas proportional pressure valve and servo controller, calibration gas source connects calibration gas proportional pressure valve, calibration gas proportional pressure valve is arranged in analyzes cabinet, its outlet is simultaneously connected to for being communicated with the blowback import of the secondary filter core inside of sampling probe by polytetrafluoro pipe, three-way pipe, calibration gas therewith road blowback air import is same import, and blowing function and calibration function are owing to can not carry out simultaneously, so do not interfere with each other.Calibration gas proportional pressure valve is controlled by servo controller, the control end connection data processing unit of servo controller.During calibration, calibration gas regularly enters from calibration gas proportional pressure valve, by extracting filtration unit, runs through whole sampling, pre-service, analytic unit.When the alignment time, arrive, data processing unit is calculated and is controlled servo controller by the oxygen concentration signals receiving, make calibration gas proportional pressure valve rationally control calibration gas pressure or flow, by relevant gas circuit control module, can carry out the on-line automatic calibration system error of total system again, really accomplish automatic total system calibration.This pressure or flow are wanted to resist surveyed environmental sample atmospheric pressure completely, and the too little sample gas that causes imports calibration gas, calibration error; Cause too greatly calibration gas waste too many.
Gas analysis unit adopts high-quality tunable diode laser light source, reliable source of power Driving technique, make the life-span long, good stability, by fine tuning technology, the output measurement wavelength of controlling laser instrument is narrower, realizes and only the response of measurement gas is avoided the interference problem of background gas, make to measure accurately, precision is high.By utilizing the real-time measurement of sensor for temperature and pressure, after measuring-signal feedback, circuit is controlled the duty of laser instrument, with this, offsets and disturbs the measurement impact bringing; Wavelength by tunable semiconductor lasers arrives different frequency ranges, and the absorbing wavelength of gas with various is selected in scanning, when realizing multiple gases, measures.
The utility model analytic unit is arranged on to be analyzed in rack, be not directly installed on check point position, the not easily damaged and disturbing effect of on-the-spot rugged surroundings, data processing technique is carried out temperature pressure compensation simultaneously, signal is anti-interference and background gas composition disturbs and processes, make to measure accurately, precision is high.
Claims (4)
1. a formula laser gas analyzer in place, is characterized in that: comprise and extract filtration unit (1), heating arrangement (2), trace pipe (3), gas pre-service (4), sampling apparatus (5), back-blowing device (6), optical unit (7), air chamber unit (8), gas detection cell (9), temperature pressure compensation unit (10), data processing unit (11), man-machine display unit (12), data output interface (13), system calibration device (14);
Described optical unit (7), air chamber unit (8), gas detection cell (9), temperature pressure compensation unit (10) connect to form gas analysis unit (15) successively;
Described extraction filtration unit (1) and back-blowing device (6) form sampling probe (16);
Air chamber unit (8) in gas analysis unit (15) is connected with sampling apparatus (5), sampling apparatus (5) is connected with gas pre-service (4), gas detection cell (9) in gas analysis unit (15) is connected with data processing unit (11), data processing unit (11) also respectively with man-machine display unit (12), data output interface (13) connects, by gas pre-service (4), sampling apparatus (5), gas analysis unit (15), data processing unit (11), man-machine display unit (12) and data output interface (13) composition analysis cabinet (17),
Described sampling probe (16) is connected with trace pipe (3), and trace pipe (3) is connected with the gas pre-service (4) of analyzing in cabinet (17).
2. formula laser gas analyzer in place according to claim 1, it is characterized in that: described extraction filtration unit (1) comprises the primary filter and the cascade filtration being connected with trace pipe being communicated with sample gas, the additional protection sleeve of primary filter, cascade filtration comprises cascade filtration filter core (1.1), fixedly the seat burr of filter core combines (1.2) and is placed on its outer heating cylindrical shell (1.3), back-blowing device (6) comprises two-way, one tunnel is for blowing out sediment the blowback gas circuit of filter core from cascade filtration filter core (1.1) inside, the blowback gas circuit that another road forms for the circulation helical shape groove of offering on seat burr combination (1.2) inner chamber, the former is pulsed blowback, the latter is continuation blowback.
3. formula laser gas analyzer in place according to claim 2, it is characterized in that described seat burr combination (1.2) top arranges three gas accesses, a gas access I (1.4) is by blowback air source and cascade filtration filter core (1.1) internal communication, a gas access II (1.5) is by blowback air source and seat burr combination (1.2) internal communication, and another gas connection III (1.6) is communicated with sample gas outlet in cascade filtration with sample lines.
4. formula laser gas analyzer in place according to claim 3, it is characterized in that it also comprises that system calibration device comprises calibration gas source, calibration gas proportional pressure valve and servo controller, calibration gas source connects calibration gas proportional pressure valve, calibration gas proportional pressure valve is arranged in analyzes cabinet, its outlet is by polytetrafluoro pipe, three-way pipe is connected to for being communicated with the blowback import of the secondary filter core inside of sampling probe, calibration gas therewith road blowback air import is same import, calibration gas proportional pressure valve is controlled by servo controller, the control end connection data processing unit of servo controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525141.6U CN203519385U (en) | 2013-08-27 | 2013-08-27 | In-situ type laser gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525141.6U CN203519385U (en) | 2013-08-27 | 2013-08-27 | In-situ type laser gas analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN203519385U true CN203519385U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320525141.6U Withdrawn - After Issue CN203519385U (en) | 2013-08-27 | 2013-08-27 | In-situ type laser gas analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519385U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439161A (en) * | 2013-08-27 | 2013-12-11 | 中绿环保科技股份有限公司 | In-place laser gas analysis instrument |
| CN107219115A (en) * | 2017-07-27 | 2017-09-29 | 中绿环保科技股份有限公司 | Pretreatment system in extraction-type particulate matter on-line monitoring system |
-
2013
- 2013-08-27 CN CN201320525141.6U patent/CN203519385U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439161A (en) * | 2013-08-27 | 2013-12-11 | 中绿环保科技股份有限公司 | In-place laser gas analysis instrument |
| CN103439161B (en) * | 2013-08-27 | 2016-08-10 | 中绿环保科技股份有限公司 | Formula laser gas analyzer in place |
| CN107219115A (en) * | 2017-07-27 | 2017-09-29 | 中绿环保科技股份有限公司 | Pretreatment system in extraction-type particulate matter on-line monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20160810 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |