CN103543121B - A kind of high-temperature flue gas infrared spectra measuring system on-line calibration apparatus and method - Google Patents
A kind of high-temperature flue gas infrared spectra measuring system on-line calibration apparatus and method Download PDFInfo
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- CN103543121B CN103543121B CN201310474191.0A CN201310474191A CN103543121B CN 103543121 B CN103543121 B CN 103543121B CN 201310474191 A CN201310474191 A CN 201310474191A CN 103543121 B CN103543121 B CN 103543121B
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Abstract
The invention discloses a kind of high-temperature flue gas infrared spectra measuring system on-line calibration device and method, include even heating system, vacuum gas distributing system and software control system; Even heating system is used for homogeneous heating institute and prepares the temperature of normal mixture body, makes the normal mixture temperature of configuration and treats that test sample temperature degree is consistent measured by high-temperature flue gas infrared spectra measuring system; Software control system for control the initial of vacuum gas distributing system distribution process and stop, for control gas and background gas high pure nitrogen aeration ratio, for the pressure in monitoring record sample cell and normal mixture body pressure and temperature and feeding back to software control system, gathering the initial of spectrum and termination for controlling high-temperature flue gas infrared spectra measuring system.Calibrating installation of the present invention, without the need to manual operation, can realize the on-line calibration of high-temperature flue gas infrared spectra measuring system; Normal mixture n-body simulation n can be surveyed sample temperature degree to measuring system by the calibrating installation in the present invention and calibration steps.
Description
Technical field
The present invention relates to process control and analysis, gas to prepare and calibration and physical electronic technical field, be specifically related to a kind of high-temperature flue gas infrared spectra measuring system on-line calibration apparatus and method.
Background technology
The fume emission of current all kinds of burner, waste incineration, industry and commercial boiler causes serious air pollution.Along with people are to the concern of smoke emissioning pollution, the accuracy of detection of high-temperature flue gas measuring system and accuracy are had higher requirement.High-temperature flue gas infrared spectra measuring system on-line calibration device contributes to the measuring accuracy and the accuracy that improve high-temperature flue gas measuring system.
At present, calibration for high-temperature flue gas measuring system lacks the calibrating gas on-line calibration device of simulation high-temperature flue gas actual temperature, most of instrument calibration is all carry out manual calibration by the standard mixture of ready-made calibrating gas or Simple air distribution device preparation demand concentration, these calibrating installations and calibration steps cannot realize on-line calibration on the one hand, limiting the calibration frequency to high-temperature flue gas measuring system, also cannot getting rid of because the difference of operator's practical operation is to calibrating the unnecessary error brought; Calibration gas cannot be simulated actual flue-gas temperature by these calibrating installations on the other hand, can not avoid the calibration deviation treating that between test sample temperature degree and standard mixture temperature, difference is brought.
Summary of the invention
In order to make up the deficiency of prior art, the invention provides a kind of high-temperature flue gas infrared spectra measuring system on-line calibration apparatus and method.
The technical solution used in the present invention is:
A kind of high-temperature flue gas infrared spectra measuring system on-line calibration device, is characterized in that, include T-valve electromagnetism air circuit breaker, vacuum gas distributing system and software control system; A, b, c of described T-valve electromagnetism air circuit breaker connect gas port respectively with treat test sample gas thief hatch, the wireway of vacuum gas distributing system is connected with the sample cell of high-temperature flue gas infrared spectra measuring system; A poroid gas barrier net, pressure sensing probe one and temperature sensing probe are installed in the wireway of T-valve electromagnetism air circuit breaker front end, pressure sensing probe and temperature sensing probe are placed in inside wireway, a pressure sensing probe two is installed in sample cell, pressure sensing probe one, pressure sensing probe two are all connected with computer by data line with temperature sensing probe, embedded software control system in computer; The gas-guide pipeline being surrounded by heat tracing pipe is connected with between the wireway of three-way solenoid valve front end and the air chamber of vacuum gas distributing system, heating tape is enclosed with around air chamber, wherein 3 pores of air chamber connect a mass flowmeter respectively through wireway, be connected respectively to gas one, gas two and high pure nitrogen again, another pore of air chamber is connected with vacuum air pump by wireway, and vacuum air pump is connected to computer by data line.
Described a kind of high-temperature flue gas infrared spectra measuring system on-line calibration device, it is characterized in that, described heating tape, heat tracing pipe are used for homogeneous heating and prepare the temperature of normal mixture body by gas one, gas two and high pure nitrogen institute, make the normal mixture temperature of configuration and treat that test sample temperature degree is consistent measured by high-temperature flue gas infrared spectra measuring system.
Described a kind of high-temperature flue gas infrared spectra measuring system on-line calibration device, it is characterized in that, described software control system for control the initial of vacuum gas distributing system distribution process and stop, for control gas one, gas two and high pure nitrogen aeration ratio, for the pressure in monitoring record sample cell and normal mixture body pressure and temperature and feeding back to software control system, gathering the initial of spectrum and termination for controlling high-temperature flue gas infrared spectra measuring system.
A kind of high-temperature flue gas infrared spectra measuring system on-line calibration method, is characterized in that comprising the steps:
A, software control system control T-valve electromagnetism air circuit breaker closedown a and connect gas port, open b, c and connect gas port;
B, software control system control vacuum air pump and start to bleed, after the pressure sensing in the sample cell of high-temperature flue gas infrared spectra measuring system pops one's head in the pressure <10pa that records, close vacuum air pump, b, c of closing T-valve electromagnetism air circuit breaker connect gas port;
C, the normal mixture body concentration of component preset according to software control system, software control system controls 3 mass flowmeters and is filled with in the air chamber of vacuum gas distributing system by the high pure nitrogen of gas one, gas two and gas as a setting according to different flow, until the pressure sensing of T-valve electromagnetism air circuit breaker front end pop one's head in the pressure that records be 0.2Mpa time, software control system controls 3 quality flowmeter flow quantities and becomes 0 simultaneously, stops inflation;
D, software control system controls the heating tape of air chamber outer wrapping and the heat tracing pipe between air chamber and T-valve electromagnetism air circuit breaker heats simultaneously, when the temperature that temperature sensing probe records is consistent with the sample temperature degree that high-temperature flue gas infrared spectra measuring system records, heating tape and heat tracing pipe keep heated at constant temperature, now software control system opens the b of T-valve air circuit breaker, c connects gas port, air chamber internal standard mixed gas is filled with in the sample cell of high-temperature flue gas infrared spectra measuring system, in sample cell, pressure sensing pops one's head in the pressure that records when being 0.1Mpa, software control system closes the b of T-valve electromagnetism air circuit breaker, c connects gas port, stop inflation,
E, inflated after, software control system starts the spectra collection software of high-temperature flue gas infrared spectra measuring system, starts to gather spectrum;
After F, spectra collection terminate, repeat said process, be filled with the normal mixture body of another preset concentration value, after the standard spectrum collection of all calibration concentration completes, stop calibration process, the b that software control system closes T-valve electromagnetism air circuit breaker connects gas port, opens a, c and connects gas port, be filled with and treat that test sample gas starts to measure high-temperature flue gas spectrum in sample cell.
Advantage of the present invention is:
Calibrating installation of the present invention has on-line calibration ability, without the need to manual operation, can realize the on-line calibration of high-temperature flue gas infrared spectra measuring system; Normal mixture n-body simulation n can be surveyed sample temperature degree to measuring system by the calibrating installation in the present invention and calibration steps.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Embodiment
As Fig. 1, a kind of high-temperature flue gas infrared spectra measuring system on-line calibration device, includes T-valve electromagnetism air circuit breaker 1, vacuum gas distributing system and software control system; A, b, c of T-valve electromagnetism air circuit breaker 1 connect gas port and are connected with the sample cell 2 of the wireway with high-temperature flue gas infrared spectra measuring system for the treatment of test sample gas thief hatch, vacuum gas distributing system respectively; In the wireway of T-valve electromagnetism air circuit breaker 1 front end, a poroid gas barrier net 5 is installed, pressure sensing probe 3 and temperature sensing probe 4 are placed in inside wireway, a pressure sensing probe 6 is installed in sample cell 2, pressure sensing probe 3, pressure sensing probe 6 are all connected with computer 14 by data line 7 with temperature sensing probe 4, embedded software control system in computer 14; The gas-guide pipeline 8 being surrounded by heat tracing pipe is connected with between the wireway of three-way solenoid valve 1 front end and the air chamber 9 of vacuum gas distributing system, heating tape 10 is enclosed with around air chamber 9, wherein 3 pores of air chamber 9 are connected to mass flowmeter 12 through wireway 13, be connected respectively to gas one again, gas two and high pure nitrogen, another pore of air chamber 9 is connected with vacuum air pump 11 by wireway 13, and vacuum air pump 11 is connected to computer 14 by data line 7.
When starting to calibrate, first software control system controls T-valve electromagnetism air circuit breaker 1 and closes a and connect gas port, opens b, c and connects gas port, now, software control system controls vacuum air pump 11 and starts to bleed, vacuum air pump 11 is closed to the pressure <10pa that the pressure sensing probe 6 in the sample cell 2 of high-temperature flue gas infrared spectra measuring system records, b, c of closing T-valve electromagnetism air circuit breaker 1 connect gas port, the true pressure that what now pressure transducer probe 6 was measured is in sample cell 2, then, according to the normal mixture body concentration of component that software systems are preset, software control system controls 3 mass flowmeters 12 and is filled with in the air chamber 9 of vacuum gas distributing system by the high pure nitrogen of gas one, gas two and gas as a setting according to different flow, when the pressure that the pressure sensing probe 3 of T-valve electromagnetism air circuit breaker 1 front end records is 0.2Mpa, software control system controls 3 mass flowmeter 12 flows and becomes 0 simultaneously, stops inflation, next, software control system controls the heating tape 10 of air chamber 9 outer wrapping and the heat tracing pipe 8 between air chamber 9 and T-valve electromagnetism air circuit breaker 1 heats simultaneously, when the temperature that temperature sensing probe records is consistent with the sample temperature degree that high-temperature flue gas infrared spectra measuring system records, heating plate 10 and heat tracing pipe 8 keep heated at constant temperature, now software control system opens the b of T-valve air circuit breaker 1, c connects gas port, air chamber 9 internal standard mixed gas is filled with in the sample cell 2 of high-temperature flue gas infrared spectra measuring system, enter normal mixture body in sample cell 2 after the obstructing of poroid gas barrier net 5, the mixing of normal mixture body is more even, temperature is more balanced, when the pressure that pressure sensing probe 6 records in sample cell 2 is 0.1Mpa, software control system closes the b of T-valve electromagnetism air circuit breaker 1, c connects gas port, stop inflation, after having inflated, software control system starts the spectra collection software of high-temperature flue gas infrared spectra measuring system, starts to gather spectrum, after spectra collection terminates, repeat said process, be filled with the normal mixture body of another preset concentration value, after the standard spectrum collection of all calibration concentration completes, stop calibration process, the b that software control system closes T-valve electromagnetism air circuit breaker 1 connects gas port, opens a, c and connects gas port, be filled with and treat that test sample gas starts to measure high-temperature flue gas spectrum in sample cell 2.
Claims (1)
1. a high-temperature flue gas infrared spectra measuring system on-line calibration device, is characterized in that, includes T-valve electromagnetism air circuit breaker, vacuum gas distributing system and software control system; A, b, c of described T-valve electromagnetism air circuit breaker connect gas port respectively with treat test sample gas thief hatch, the wireway of vacuum gas distributing system is connected with the sample cell of high-temperature flue gas infrared spectra measuring system; A poroid gas barrier net, pressure sensing probe one and temperature sensing probe are installed in the wireway of T-valve electromagnetism air circuit breaker front end, pressure sensing probe and temperature sensing probe are placed in inside wireway, a pressure sensing probe two is installed in sample cell, pressure sensing probe one, pressure sensing probe two are all connected with computer by data line with temperature sensing probe, embedded software control system in computer; The gas-guide pipeline being surrounded by heat tracing pipe is connected with between the wireway of three-way solenoid valve front end and the air chamber of vacuum gas distributing system, heating tape is enclosed with around air chamber, wherein 3 pores of air chamber connect a mass flowmeter respectively through wireway, be connected respectively to gas one, gas two and high pure nitrogen again, another pore of air chamber is connected with vacuum air pump by wireway, and vacuum air pump is connected to computer by data line;
Described heating tape, heat tracing pipe are used for homogeneous heating and prepare the temperature of normal mixture body by gas one, gas two and high pure nitrogen institute, make the normal mixture temperature of configuration and treat that test sample temperature degree is consistent measured by high-temperature flue gas infrared spectra measuring system;
Described software control system for control the initial of vacuum gas distributing system distribution process and stop, for control gas one, gas two and high pure nitrogen aeration ratio, for the pressure in monitoring record sample cell and normal mixture body pressure and temperature and feeding back to software control system, gathering the initial of spectrum and termination for controlling high-temperature flue gas infrared spectra measuring system;
Described device carries out the method for on-line calibration, comprises the steps:
A, software control system control T-valve electromagnetism air circuit breaker closedown a and connect gas port, open b, c and connect gas port;
B, software control system control vacuum air pump and start to bleed, after the pressure sensing in the sample cell of high-temperature flue gas infrared spectra measuring system pops one's head in the pressure <10pa that records, close vacuum air pump, b, c of closing T-valve electromagnetism air circuit breaker connect gas port;
C, the normal mixture body concentration of component preset according to software control system, software control system controls 3 mass flowmeters and is filled with in the air chamber of vacuum gas distributing system by the high pure nitrogen of gas one, gas two and gas as a setting according to different flow, until the pressure sensing of T-valve electromagnetism air circuit breaker front end pop one's head in the pressure that records be 0.2Mpa time, software control system controls 3 quality flowmeter flow quantities and becomes 0 simultaneously, stops inflation;
D, software control system controls the heating tape of air chamber outer wrapping and the heat tracing pipe between air chamber and T-valve electromagnetism air circuit breaker heats simultaneously, when the temperature that temperature sensing probe records is consistent with the sample temperature degree that high-temperature flue gas infrared spectra measuring system records, heating tape and heat tracing pipe keep heated at constant temperature, now software control system opens the b of T-valve air circuit breaker, c connects gas port, air chamber internal standard mixed gas is filled with in the sample cell of high-temperature flue gas infrared spectra measuring system, in sample cell, pressure sensing pops one's head in the pressure that records when being 0.1Mpa, software control system closes the b of T-valve electromagnetism air circuit breaker, c connects gas port, stop inflation,
E, inflated after, software control system starts the spectra collection software of high-temperature flue gas infrared spectra measuring system, starts to gather spectrum;
After F, spectra collection terminate, repeat said process, be filled with the normal mixture body of another preset concentration value, after the standard spectrum collection of all calibration concentration completes, stop calibration process, the b that software control system closes T-valve electromagnetism air circuit breaker connects gas port, opens a, c and connects gas port, be filled with and treat that test sample gas starts to measure high-temperature flue gas spectrum in sample cell.
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