CN103240011B - Chemical agent simulant cloud cluster generation systems - Google Patents
Chemical agent simulant cloud cluster generation systems Download PDFInfo
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- CN103240011B CN103240011B CN201310095310.1A CN201310095310A CN103240011B CN 103240011 B CN103240011 B CN 103240011B CN 201310095310 A CN201310095310 A CN 201310095310A CN 103240011 B CN103240011 B CN 103240011B
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Abstract
The invention discloses a kind of chemical agent simulant cloud cluster generation systems, this system comprises gaseous state or liquid volatilization gas standard gas generating apparatus, air distributing device, heated air absorption cell and Blackbody radiation source; The calibrating gas that gaseous state or liquid volatilization gas standard gas generating apparatus generate enters air distributing device by tracheae, and air distributing device is prepared certain density gas and imported heated air absorption cell by tracheae; The entering of Blackbody radiation source, gas absorption cell, light hole and FTIR spectrum instrument are positioned in same light path; Infrared radiating light is sent by Blackbody radiation source when chemical agent simulant cloud cluster is analyzed, sample cell is entered through gas absorption cell incidence hole, and through the chemical agent simulant cloud cluster in gas absorption cell, again through the light hole outgoing of gas absorption cell, enter FTIR spectrum instrument, finally controlled the collection of FTIR spectrum instrument by computer, analyze and stored infrared spectral radiant data.The present invention can precise control of temperature and concentration, can produce the chemical agent simulant cloud cluster of different temperatures, variable concentrations, can meet the needs of research, and reduce the potential hazard to staff.
Description
Technical field
The present invention relates to environment measuring technology and analysis and optical field, specifically refer to a kind of chemical agent simulant cloud cluster generation systems.
Background technology
Society, the various inorganic matter of gaseous state or liquid state and organic binary or multiple elements design pollute in rising trend, but the various inorganic matter of these gaseous states or liquid state and organic binary or multiple elements design pollute the variation existed again under different temperatures, variable concentrations condition and pollute.Study these diversification, diversified pollution condition, the chemical agent simulant steam of preparation different temperatures, variable concentrations just seems particularly important.
At present, chemical agent simulant is mainly simply prepared in laboratory, cannot precise control of temperature and concentration, and laboratory distribution capacity is less, cannot meet the needs of research, and chemical agent simulant has certain potential hazard to laboratory worker.Invention describes a kind of chemical agent simulant cloud cluster generation systems, the chemical agent simulant steam of different temperatures, variable concentrations can be produced.May be used for studying different temperatures, the inorganic matter of variable concentrations and organic binary or multiple elements design pollutes, also may be used for simulation and produce emission gases situation in the cabin bodies such as naval vessel, aircraft carrier, locomotive.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of chemical agent simulant generation systems that can generate different temperatures, variable concentrations is provided.
In order to achieve the above object, the technical solution adopted in the present invention is:
Chemical agent simulant cloud cluster generation systems comprises gaseous state or liquid volatilization gas standard gas generating apparatus, air distributing device, heated air absorption cell and Blackbody radiation source, described gaseous state or liquid volatilization gas standard gas generating apparatus are connected to air distributing device by tracheae, and zero gas (high-purity N is housed respectively
2or air) and the air accumulator of high concentration object gas be also connected to air distributing device by tracheae, all air valve is installed in the middle of tracheae, gaseous state or liquid volatilization gas standard gas generating apparatus are provided with inlet, and connect air valve successively, container and the gas pump of zero gas are housed, air distributing device is also connected with sliding vane rotary vacuum pump by tracheae, magnetic valve, the top of described heated air absorption cell has three through holes, middle through hole is connected to air distributing device by tracheae, by the through hole at two ends, Pressure gauge is connected to heated air absorption cell, the centre of heated air absorption cell and two ends are also respectively connected to hygrosensor and temperature controller, entering of heated air absorption cell both sides, light hole is all provided with infrared window, Blackbody radiation source is laid in the incidence hole side of heated air absorption cell, FTIR spectrum instrument is laid in light hole side, and Blackbody radiation source, entering of heated air absorption cell, light hole and FTIR spectrum instrument are positioned in same light path, FTIR spectrum instrument is connected to computer.
Gaseous state or liquid volatilization gas standard gas generating apparatus can by under normal temperature and pressure in gaseous state or the various inorganic matter of liquid state and organic matter be mixed with the binary of required concentration or the calibrating gas of Diversity, preparing calibrating gas concentration range: 10ppm ~ saturated vapor concentration (volume ratio); The normal mixture body precision of preparation: ± 5%; Temperature of vaporization chamber scope: 0 ~ 200 DEG C, adjustable, Temperature numerical shows in real time; Infrared window adopts zinc selenide material, diameter 150mm, thickness 12mm, and plating 7 ~ 14um anti-reflection film; The thermoregulation range of heated air absorption cell is: room temperature ~ 100 DEG C; The surface of Blackbody radiation source adopt emissivity higher than 93% material, high temperature blackbody radiation source operating temperature range: room temperature+5 DEG C ~ 400 DEG C; Net long wave radiation face: diameter 200mm; Temperature resolution: 0.1 DEG C; Low temperature blackbody radiation source operating temperature range :-30 DEG C ~ 70 DEG C; Net long wave radiation face: diameter 200mm; Temperature resolution: 0.01 DEG C; Low temperature service condition: gas curtain purges.
Prepare and the method for analysis mode chemical agent cloud according to above-mentioned chemical agent simulant cloud cluster generation systems, comprise following concrete steps:
The first step, preparation chemical agent simulant cloud cluster, point following two kinds of situations:
1) chemical agent simulant cloud cluster layoutprocedure (gaseous state)
Suppose the system mode before distribution: temperature T
0; Calibrating gas (high concentration) concentration of configuration is C
0; Target gas levels for configuration is C, and the end-state of configuration gas is: temperature T, pressure atmospheric pressure (0.1MPa).The detailed process of distribution is as follows:
(1) initial temperature is recorded: close the several air valves, magnetic valve and the vavuum pump that are connected to air distributing device, open hygrosensor and temperature controller, the temperature T of the heated air absorption cell before record distribution
0.
(2) bleed: open vavuum pump and magnetic valve, start to bleed, observe two manometric changes, when stable gas pressure, close vavuum pump and magnetic valve, record atmospheric pressure value P now
0.
(3) supplement high concentration object gas: opened by the air valve between air distributing device and high concentration object gas air accumulator, open high concentration object gas air accumulator and start distribution, observe the change of gage pressure value, treat force value rising △ P
1time, close this air valve and high concentration object gas air accumulator, stop air inlet; △ P
1value size is shown below:
In formula: C is the object gas ultimate density (volumetric concentration) for configuration;
C
0for high concentration target gas levels (volumetric concentration);
T
0for gas cell temperature before distribution, unit K;
T is the gas temperature for configuration, unit K;
Pressure unit is MPa.
(4) supplement zero gas: opened by the air valve between air distributing device and zero gas air accumulator, open zero gas air accumulator, start supplementary zero gas, observe the change of gage pressure value, treat force value rising △ P
2time, close this air valve and zero gas air accumulator, stop air inlet; △ P
2value size is shown below:
In formula: C is the object gas ultimate density (volumetric concentration) for configuration;
C
0for high concentration target gas levels (volumetric concentration);
T
0for gas cell temperature before distribution, unit K;
T is the gas temperature for configuration, unit K;
P
0for the atmospheric pressure value after bleeding, units MPa.
(5) gas absorption cell heating: open temperature controller, the pre-controlling temperature of temperature controller is all set to T, start to heat heated air absorption cell, observes the change of temperature, treats that temperature stabilization is to T with hygrosensor, stop heating, distribution completes.
2) chemical agent simulant steam layoutprocedure (liquid state)
Suppose the system mode before distribution: temperature T
0; The fluid density of configuration is ρ, molal weight M; Target gas levels for configuration is C, and the end-state of configuration gas is: temperature T, pressure atmospheric pressure (0.1MPa).The detailed process of distribution is as follows:
(1) original state is recorded: close the several air valves, magnetic valve and the vavuum pump that are connected to air distributing device, open hygrosensor and temperature controller, the temperature T of the heated air absorption cell before record distribution
0.
(2) Sample Injection mouth temperature is arranged: open gaseous state or liquid volatilization gas standard gas generating apparatus, its sample injection port temperature is set to more than the boiling point of fluid sample.
(3) bleed: open vavuum pump and magnetic valve, start to bleed, observe two manometric changes, when stable gas pressure, close vavuum pump and magnetic valve, record atmospheric pressure value P now
0.
(4) injecting fluid sample: gaseous state or the air valve between liquid volatilization gas standard gas generating apparatus and air distributing device are opened, from the inlet gas-tight syringe of gaseous state or liquid volatilization gas standard gas generating apparatus, the fluid sample of V volume is injected gaseous state or liquid volatilization gas standard gas generating apparatus, open gaseous state or the air valve between liquid volatilization gas standard gas generating apparatus and the container that zero gas is housed, open gas pump again, promote zero gas and the fluid sample be injected into is sent into heated air absorption cell, treat that fluid sample is all injected complete, close the gentle body pump of gas check valve, observe hygrosensor, record the temperature T of now heated air absorption cell
1, the computing formula of V as shown in the formula:
In formula: V is the liquid sample volume needing to inject air distributing device, unit l;
C is the object gas ultimate density (volumetric concentration) for configuration;
ρ is fluid sample density, unit g/l;
M is the molal weight of fluid sample, unit g/mol;
T0 is gas cell temperature (environment temperature) before distribution, unit K;
T is the gas temperature for configuration, unit K.
(5) supplement zero gas: opened by the air valve between air distributing device and zero gas air accumulator, open zero gas air accumulator, start supplementary zero gas, observe the change of gage pressure value, treat that force value rises to P
1time, close and connect high-purity N 2 valve, stop air inlet; P
1value size is shown below:
T
1for the temperature of heated air absorption cell after injecting fluid sample, unit K;
T is the gas temperature for configuration, unit K.
(6) gas absorption cell heating: open temperature controller, the pre-controlling temperature of temperature controller is all set to T, start to heat heated air absorption cell, observes the change of temperature, treats that temperature stabilization is to T with hygrosensor, stop heating, distribution completes.
Second step, analysis mode chemical agent cloud
Blackbody radiation source sends infra-red radiation light beam, light beam enters gas absorption cell from the incidence hole of heated air absorption cell, and through the chemical agent simulant cloud cluster in gas absorption cell, again through the light hole outgoing of gas absorption cell, enter FTIR spectrum instrument, finally controlled the collection of FTIR spectrum instrument by computer, analyze and stored infrared spectral radiant data.
The present invention is advantageously: can precise control of temperature and concentration, the chemical agent simulant cloud cluster of different temperatures, variable concentrations can be produced, for studying different temperatures, the inorganic matter of variable concentrations and organic binary or multiple elements design pollutes, also may be used for simulation and producing emission gases situation in the cabin bodies such as naval vessel, aircraft carrier, locomotive; Distribution capacity is large, can meet the needs of research, and reduce the potential hazard to staff.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Detailed description of the invention
As Fig. 1, chemical agent simulant cloud cluster generation systems comprises air distributing device 1, gaseous state or liquid volatilization gas standard gas generating apparatus 7, heated air absorption cell 11 and Blackbody radiation source 16, described gaseous state or liquid volatilization gas standard gas generating apparatus 7 are connected to air distributing device 1 by tracheae, and zero gas 5(high-purity N is housed respectively
2or air) and the air accumulator of high concentration object gas 6 be also connected to air distributing device 1 by tracheae, air valve 4,41 and 42 is separately installed with in the middle of tracheae, gaseous state or liquid volatilization gas standard gas generating apparatus 7 are provided with inlet 8, and connect air valve 43 successively, the container 9 of zero gas and gas pump 10 are housed, air distributing device 1 is also connected with sliding vane rotary vacuum pump 3 by tracheae, magnetic valve 2, the top of described heated air absorption cell 11 has three through holes, middle through hole is connected to air distributing device 1 by tracheae, by the through hole at two ends by Pressure gauge 12, 12 ' is connected to heated air absorption cell 11, the centre of heated air absorption cell 11 and two ends are also respectively connected to hygrosensor 14, 14 ', 14 " and temperature controller 15, 15 ', 15 ", the incidence hole 13 of heated air absorption cell 11 both sides, light hole 13 ' is all provided with infrared window, Blackbody radiation source 16 is laid in incidence hole 13 side of heated air absorption cell, FTIR spectrum instrument 17 is laid in light hole 13 ' side, and Blackbody radiation source 16, the incidence hole 13 of heated air absorption cell, light hole 13 ' and FTIR spectrum instrument 17 are positioned in same light path, FTIR spectrum instrument is connected to computer 18.
Gaseous state or liquid volatilization gas standard gas generating apparatus can by under normal temperature and pressure in gaseous state or the various inorganic matter of liquid state and organic matter be mixed with the binary of required concentration or the calibrating gas of Diversity, preparing calibrating gas concentration range: 10ppm ~ saturated vapor concentration (volume ratio); The normal mixture body precision of preparation: ± 5%; Temperature of vaporization chamber scope: 0 ~ 200 DEG C, adjustable, Temperature numerical shows in real time; Infrared window adopts zinc selenide material, diameter 150mm, thickness 12mm, and plating 7 ~ 14um anti-reflection film; The thermoregulation range of heated air absorption cell is: room temperature ~ 100 DEG C; The surface of Blackbody radiation source adopt emissivity higher than 93% material, high temperature blackbody radiation source operating temperature range: room temperature+5 DEG C ~ 400 DEG C; Net long wave radiation face: diameter 200mm; Temperature resolution: 0.1 DEG C; Low temperature blackbody radiation source operating temperature range :-30 DEG C ~ 70 DEG C; Net long wave radiation face: diameter 200mm; Temperature resolution: 0.01 DEG C; Low temperature service condition: gas curtain purges.
Prepare and the method for analysis mode chemical agent cloud according to above-mentioned chemical agent simulant cloud cluster generation systems, comprise following concrete steps:
The first step, preparation chemical agent simulant cloud cluster, point following two kinds of situations:
1) chemical agent simulant cloud cluster layoutprocedure (gaseous state)
Suppose the system mode before distribution: temperature T
0; Calibrating gas (high concentration) concentration of configuration is C
0; Target gas levels for configuration is C, and the end-state of configuration gas is: temperature T, pressure atmospheric pressure (0.1MPa).The detailed process of distribution is as follows:
(1) record initial temperature: close gas check valve 4,41,42, magnetic valve 2 and vavuum pump 3, open hygrosensor 14,14 ', 14 " and temperature controller 15,15 ', 15 ", record the temperature T of the heated air absorption cell 11 before distribution
0.
(2) bleed: open vavuum pump 3 and magnetic valve 2, start to bleed, observe the change of Pressure gauge 12,12 ', when stable gas pressure, close vavuum pump 3 and magnetic valve 2, record atmospheric pressure value P now
0.
(3) supplement high concentration object gas: open air valve 42, open high concentration object gas air accumulator 6 and start distribution, observe the change of Pressure gauge 12,12 ' force value, treat force value rising △ P
1time, close gas check valve 42 and high concentration object gas air accumulator 6, stop air inlet; △ P
1value size is shown below:
In formula: C is the object gas ultimate density (volumetric concentration) for configuration;
C
0for high concentration target gas levels (volumetric concentration);
T
0for gas cell temperature before distribution, unit K;
T is the gas temperature for configuration, unit K;
Pressure unit is MPa.
(4) supplement zero gas: open air valve 41, open zero gas air accumulator 5, start supplementary zero gas, observe the change of Pressure gauge 12,12 ' force value, treat force value rising △ P
2time, close gas check valve 41 and zero gas air accumulator 5, stop air inlet; △ P
2value size is shown below:
In formula: C is the object gas ultimate density (volumetric concentration) for configuration;
C
0for high concentration target gas levels (volumetric concentration);
T
0for gas cell temperature before distribution, unit K;
T is the gas temperature for configuration, unit K;
P
0for the atmospheric pressure value after bleeding, units MPa.
(5) gas absorption cell heating: open temperature controller 15,15 ', 15 "; by temperature controller 15,15 ', 15 " pre-controlling temperature be all set to T, start to heat heated air absorption cell 11, with hygrosensor 14,14 ', 14 " observe the change of temperature; treat that temperature stabilization is to T; stop heating, distribution completes.
2) chemical agent simulant steam layoutprocedure (liquid state)
Suppose the system mode before distribution: temperature T
0; The fluid density of configuration is ρ, molal weight M; Target gas levels for configuration is C, and the end-state of configuration gas is: temperature T, pressure atmospheric pressure (0.1MPa).The detailed process of distribution is as follows:
(1) original state is recorded: close gas check valve 4,41 and 42, magnetic valve 2 and vavuum pump 3, open hygrosensor 14,14 ', 14 " and temperature controller 15,15 ', 15 ", the temperature T of the heated air absorption cell before record distribution
0.
(2) Sample Injection mouth temperature is arranged: open gaseous state or liquid volatilization gas standard gas generating apparatus 7, its sample injection port 8 temperature is set to more than the boiling point of fluid sample.
(3) bleed: open vavuum pump 3 and magnetic valve 2, start to bleed, observe the change of Pressure gauge 12,12 ', when stable gas pressure, close vavuum pump 3 and magnetic valve 2, record atmospheric pressure value P now
0.
(4) injecting fluid sample: open air valve 4, with gas-tight syringe, the fluid sample of V volume is injected gaseous state or liquid volatilization gas standard gas generating apparatus 7 from the inlet 8 of gaseous state or liquid volatilization gas standard gas generating apparatus 7, open air valve 43, open gas pump 10 again, promote zero gas be equipped with in the container 9 of zero gas and the fluid sample be injected into is sent into heated air absorption cell 11, treat that fluid sample is all injected complete, close gas check valve 4, 43 and gas pump 8, observe hygrosensor 14, 14 ', 14 ", record the temperature T of now heated air absorption cell
1, the computing formula of V as shown in the formula:
In formula: V is the liquid sample volume needing to inject air distributing device, unit l;
C is the object gas ultimate density (volumetric concentration) for configuration;
ρ is fluid sample density, unit g/l;
M is the molal weight of fluid sample, unit g/mol;
T0 is gas cell temperature (environment temperature) before distribution, unit K;
T is the gas temperature for configuration, unit K.
(5) supplement zero gas: open air valve 41, open zero gas air accumulator 5, start supplementary zero gas, observe the change of Pressure gauge 12,12 ' force value, treat that force value rises to P
1time, close gas check valve 41 and zero gas air accumulator 5, stop air inlet; P
1value size is shown below:
T
1for the temperature of heated air absorption cell after injecting fluid sample, unit K;
T is the gas temperature for configuration, unit K.
(6) gas absorption cell heating: open temperature controller 15,15 ', 15 "; by temperature controller 15,15 ', 15 " pre-controlling temperature be all set to T, start to heat heated air absorption cell 11, with hygrosensor 14,14 ', 14 " observe the change of temperature; treat that temperature stabilization is to T; stop heating, distribution completes.
Second step, analysis mode chemical agent cloud
Blackbody radiation source 16 sends infra-red radiation light beam, light beam enters gas absorption cell 11 from the incidence hole 13 of heated air absorption cell 11, and through the chemical agent simulant cloud cluster in gas absorption cell, again through the light hole 13 ' outgoing of gas absorption cell, enter FTIR spectrum instrument 17, finally control FTIR spectrum instrument 17 by computer 18 and gather, analyze and store infrared spectral radiant data.
Claims (7)
1. chemical agent simulant cloud cluster generation systems, is characterized in that: comprise gaseous state or liquid volatilization gas standard gas generating apparatus, air distributing device, heated air absorption cell and Blackbody radiation source, described gaseous state or liquid volatilization gas standard gas generating apparatus are connected to air distributing device by tracheae, and the air accumulator that zero gas and high concentration object gas are housed respectively is also connected to air distributing device by tracheae, all air valve is installed in the middle of tracheae, gaseous state or liquid volatilization gas standard gas generating apparatus are provided with inlet, and connect air valve successively, container and the gas pump of zero gas are housed, air distributing device is also connected with sliding vane rotary vacuum pump by tracheae, magnetic valve, the top of described heated air absorption cell has three through holes, middle through hole is connected to air distributing device by tracheae, by the through hole at two ends, Pressure gauge is connected to heated air absorption cell, the centre of heated air absorption cell and two ends are also respectively connected to hygrosensor and temperature controller, entering of heated air absorption cell both sides, light hole is all provided with infrared window, Blackbody radiation source is laid in the incidence hole side of heated air absorption cell, FTIR spectrum instrument is laid in light hole side, and Blackbody radiation source, entering of heated air absorption cell, light hole and FTIR spectrum instrument are positioned in same light path, FTIR spectrum instrument is connected to computer.
2. chemical agent simulant cloud cluster generation systems according to claim 1, it is characterized in that: described gaseous state or liquid volatilization gas standard gas generating apparatus can by under normal temperature and pressure in gaseous state or the various inorganic matter of liquid state and organic matter be mixed with the binary of required concentration or the calibrating gas of Diversity, preparing calibrating gas concentration range: 10ppm ~ saturated vapor concentration; The normal mixture body precision of preparation: ± 5%; Temperature of vaporization chamber scope: 0 ~ 200 DEG C, adjustable, Temperature numerical shows in real time.
3. chemical agent simulant cloud cluster generation systems according to claim 1, is characterized in that: zero described gas is high-purity N
2or air.
4. chemical agent simulant cloud cluster generation systems according to claim 1, is characterized in that: described infrared window adopts zinc selenide material, diameter 150mm, thickness 12mm, and plating 7 ~ 14 μm of anti-reflection films.
5. chemical agent simulant cloud cluster generation systems according to claim 1, is characterized in that: the thermoregulation range of described heated air absorption cell is: room temperature ~ 100 DEG C.
6. chemical agent simulant cloud cluster generation systems according to claim 1, is characterized in that: the surface of described Blackbody radiation source adopt emissivity higher than 93% material, high temperature blackbody radiation source operating temperature range: room temperature+5 DEG C ~ 400 DEG C; Net long wave radiation face: diameter 200mm; Temperature resolution: 0.1 DEG C; Low temperature blackbody radiation source operating temperature range :-30 DEG C ~ 70 DEG C; Net long wave radiation face: diameter 200mm; Temperature resolution: 0.01 DEG C; Low temperature service condition: gas curtain purges.
7. chemical agent simulant cloud cluster generation systems according to claim 1 is prepared and the method for analysis mode chemical agent cloud, it is characterized in that, comprises following concrete steps:
The first step, preparation chemical agent simulant cloud cluster, point following two kinds of situations:
1) chemical agent simulant cloud cluster layoutprocedure--gaseous state
Suppose the system mode before distribution: temperature T
0; The high concentration target gas levels of configuration is C
0; Target gas levels for configuration is C, and the end-state of configuration gas is: temperature T, pressure atmospheric pressure, i.e. a 0.1MPa; The detailed process of distribution is as follows:
(1) initial temperature is recorded: close the several air valves, magnetic valve and the vavuum pump that are connected to air distributing device, open hygrosensor and temperature controller, the temperature T of the heated air absorption cell before record distribution
0;
(2) bleed: open vavuum pump and magnetic valve, start to bleed, observe two manometric changes, when stable gas pressure, close vavuum pump and magnetic valve, record atmospheric pressure value P now
0;
(3) supplement high concentration object gas: opened by the air valve between air distributing device and high concentration object gas air accumulator, open high concentration object gas air accumulator and start distribution, observe the change of gage pressure value, treat force value rising △ P
1time, close this air valve and high concentration object gas air accumulator, stop air inlet; △ P
1value size is shown below:
In formula: C is the object gas ultimate density for configuration;
C
0for high concentration target gas levels;
T
0for gas cell temperature before distribution, unit K;
T is the gas temperature for configuration, unit K;
Pressure unit is MPa;
(4) supplement zero gas: opened by the air valve between air distributing device and zero gas air accumulator, open zero gas air accumulator, start supplementary zero gas, observe the change of gage pressure value, treat force value rising △ P
2time, close this air valve and zero gas air accumulator, stop air inlet; △ P
2value size is shown below:
In formula: C is the object gas ultimate density for configuration;
C
0for high concentration target gas levels;
T
0for gas cell temperature before distribution, unit K;
T is the gas temperature for configuration, unit K;
P
0for the atmospheric pressure value after bleeding, units MPa;
(5) gas absorption cell heating: open temperature controller, the pre-controlling temperature of temperature controller is all set to T, start to heat heated air absorption cell, observes the change of temperature, treats that temperature stabilization is to T with hygrosensor, stop heating, distribution completes;
2) chemical agent simulant steam layoutprocedure--liquid
Suppose the system mode before distribution: temperature T
0; The fluid density of configuration is
, molal weight M; Target gas levels for configuration is C, and the end-state of configuration gas is: temperature T, pressure atmospheric pressure, i.e. a 0.1MPa; The detailed process of distribution is as follows:
(1) original state is recorded: close the several air valves, magnetic valve and the vavuum pump that are connected to air distributing device, open hygrosensor and temperature controller, the temperature T of the heated air absorption cell before record distribution
0;
(2) Sample Injection mouth temperature is arranged: open gaseous state or liquid volatilization gas standard gas generating apparatus, its sample injection port temperature is set to more than the boiling point of fluid sample;
(3) bleed: open vavuum pump and magnetic valve, start to bleed, observe two manometric changes, when stable gas pressure, close vavuum pump and magnetic valve, record atmospheric pressure value P now
0;
(4) injecting fluid sample: gaseous state or the air valve between liquid volatilization gas standard gas generating apparatus and air distributing device are opened, from the inlet gas-tight syringe of gaseous state or liquid volatilization gas standard gas generating apparatus, the fluid sample of V volume is injected gaseous state or liquid volatilization gas standard gas generating apparatus, open gaseous state or the air valve between liquid volatilization gas standard gas generating apparatus and the container that zero gas is housed, open gas pump again, promote zero gas and the fluid sample be injected into is sent into heated air absorption cell, treat that fluid sample is all injected complete, close the gentle body pump of gas check valve, observe hygrosensor, record the temperature T of now heated air absorption cell
1, the computing formula of V as shown in the formula:
In formula: V is the liquid sample volume needing to inject air distributing device, unit l;
C is the object gas ultimate density for configuration;
for fluid sample density, unit g/l;
M is the molal weight of fluid sample, unit g/mol;
T
0for gas cell temperature before distribution, unit K;
T is the gas temperature for configuration, unit K;
(5) supplement zero gas: opened by the air valve between air distributing device and zero gas air accumulator, open zero gas air accumulator, start supplementary zero gas, observe the change of gage pressure value, treat that force value rises to P
1time, close and connect high-purity N
2valve, stops air inlet; P
1value size is shown below:
T
1for the temperature of heated air absorption cell after injecting fluid sample, unit K;
T is the gas temperature for configuration, unit K;
(6) gas absorption cell heating: open temperature controller, the pre-controlling temperature of temperature controller is all set to T, start to heat heated air absorption cell, observes the change of temperature, treats that temperature stabilization is to T with hygrosensor, stop heating, distribution completes;
Second step, analysis mode chemical agent cloud
Blackbody radiation source sends infra-red radiation light beam, light beam enters gas absorption cell from the incidence hole of heated air absorption cell, and through the chemical agent simulant cloud cluster in gas absorption cell, again through the light hole outgoing of gas absorption cell, enter FTIR spectrum instrument, finally controlled the collection of FTIR spectrum instrument by computer, analyze and stored infrared spectral radiant data.
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| CN109682171A (en) * | 2018-11-15 | 2019-04-26 | 苏州卡泰里环保能源有限公司 | It is a kind of for controlling the control structure of infra-red radiation luminescent screen gas flow |
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| CN101713712A (en) * | 2008-10-06 | 2010-05-26 | 中国科学院大连化学物理研究所 | Dynamic preparation device for standard gas of solid-phase or liquid-phase compounds and application thereof |
| CN102039096A (en) * | 2009-10-16 | 2011-05-04 | 北京均方谱元科技有限公司 | System and method for dynamically distributing gases of volatile liquid under room temperature and normal pressure |
| CN102698645A (en) * | 2012-05-30 | 2012-10-03 | 山西科致成科技有限公司 | System for automatically proportioning standard gases |
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| CN103240011A (en) | 2013-08-14 |
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