CN115060680B - Flame spectrum transmittance interference test platform by environment medium - Google Patents

Flame spectrum transmittance interference test platform by environment medium Download PDF

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Publication number
CN115060680B
CN115060680B CN202210806134.7A CN202210806134A CN115060680B CN 115060680 B CN115060680 B CN 115060680B CN 202210806134 A CN202210806134 A CN 202210806134A CN 115060680 B CN115060680 B CN 115060680B
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medium
flame
infrared spectrometer
generating device
environmental
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CN115060680A (en
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刘祺
陈志莉
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Guilin University of Technology
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Guilin University of Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28Investigating the spectrum
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59Transmissivity
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28Investigating the spectrum
    • G01J2003/283Investigating the spectrum computer-interfaced
    • G01J2003/2833Investigating the spectrum computer-interfaced and memorised spectra collection

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The invention provides a flame spectral transmittance interference test platform for environmental mediums, which comprises a flame generating device for generating flames, a medium filling chamber, an environmental medium generating device capable of providing the environmental mediums for the medium filling chamber, a heating device for heating a sensor lens, an infrared spectrometer and a data analysis system connected with the infrared spectrometer, wherein the infrared spectrometer is connected with the infrared spectrometer; the environmental medium generating device is positioned outside the medium charging chamber and can provide one or more of simulated sunlight, simulated PM particles and water mist to the medium charging chamber. According to the invention, the spectrum of the single fire, the spectrum of the fire passing through the sensor lens and a single environment medium, and the spectrum of the fire passing through the sensor lens and a plurality of environment mediums can be obtained, and the interference condition of the single or a plurality of environment mediums on the spectral transmittance of the flame is obtained through calculation by comparing and analyzing the spectrum, so that a basis is provided for further improving the remote spectrum acquisition precision.

Description

Flame spectrum transmittance interference test platform by environment medium
Technical Field
The invention belongs to the field of flame spectrum transmittance testing, and particularly relates to a flame spectrum transmittance interference testing platform by an environment medium.
Background
In recent years, sudden large-scale fire accidents frequently occur at home and abroad, so that serious economic loss, casualties and ecological environment damage are caused, and serious influence is brought to society. The existing ground monitoring means has short monitoring distance and can only acquire the fire information of local points. Meanwhile, the potential safety hazard of the monitoring equipment is large, and the requirements of emergency monitoring and quick response cannot be met. The space flight and aviation monitoring modes such as satellites and unmanned aerial vehicles are the best way for monitoring large-scale fire disasters.
The detection and extraction of the spectral characteristics of the combustion flame is the basis for monitoring fire pollution. However, the lenses of the sensor are extremely susceptible to interference from environmental media (such as solar intensity, air humidity, air quality index, etc.) during remote monitoring. Particle scattering, refraction, absorption, etc. in air can all have an effect on the transmittance of the lens of the sensor, and thus have a considerable effect on flame spectrometry.
Therefore, it is necessary to perform research on the influence of the interference of the environmental medium on the transmittance of the flame spectrum by constructing a test platform between the flame spectrum and the environmental medium, and a foundation is provided for further improving the remote spectrum acquisition precision.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and aims to provide a flame spectrum transmittance interference test platform by an environment medium.
In order to achieve the above purpose, the invention adopts the following technical scheme: the device comprises a flame generating device for generating flame, a medium filling chamber, an environment medium generating device capable of providing environment medium for the medium filling chamber, a heating device for heating a sensor lens, an infrared spectrometer and a data analysis system connected with the infrared spectrometer, wherein the flame generating device is used for generating flame; the environment medium generating device is positioned outside the medium charging chamber and can provide one or more than one of simulated sunlight, simulated PM particles and water mist for the medium charging chamber; the medium filling chamber and the sensor lens are sequentially arranged in a light path from flame to the infrared spectrometer, the infrared spectrometer can scan the flame generated by the flame generating device through the medium filling chamber which is not filled with the environmental medium, the infrared spectrometer can scan the flame generated by the flame generating device through the sensor lens and the medium filling chamber which is not filled with the environmental medium, and the infrared spectrometer can scan the flame generated by the flame generating device through the sensor lens and the medium filling chamber which is filled with the environmental medium and transmit a scanning result to the data analysis system.
In the technical scheme, the flame generating device can generate flame, and a sufficient normal flame combustion environment is provided; the infrared spectrometer is a full-band spectrum measuring tool; the medium filling chamber is arranged in a light path between the infrared spectrometer and the flame, so that variables of sunlight, PM particles and humidity in the environment can be simulated; the heating device heats the sensor lens, and is used for simulating the influence of temperature on the transmittance of the sensor lens when the sensor lens is close to flame. According to the invention, the spectrogram of the single tank fire, the spectrogram of the tank fire introduced into a single environment medium, the spectrogram of the tank fire introduced into a plurality of environment mediums, the spectrogram of the tank fire passing through the sensor lens and the single environment medium and the spectrogram of the tank fire passing through the sensor lens and the plurality of environment mediums can be obtained, and the data analysis system calculates the interference condition of the single environment medium or the plurality of environment mediums on the spectral transmittance of the flame by comparing and analyzing the spectrogram, so that the basis is provided for further improving the remote spectrum acquisition precision.
In a preferred embodiment of the present invention, the flame generating device includes a fuel tank, a combustion tank connected to the fuel tank through an air supply pipe, and capable of generating flame.
In a preferred embodiment of the present invention, the environmental medium generating device comprises one or more of a solar simulator, an aerosol generator, and a humidity generator; the solar light simulated by the solar light simulation device can be emitted into the medium filling room, and the solar light simulation device can simulate solar light with different illumination intensities; and/or the aerosol generator is connected with the medium filling chamber through a pipeline, and the aerosol generator can generate aerosol particles with different particle diameters and/or concentrations; and/or the humidity generator is connected with the medium filling chamber through a pipeline, and the humidity generator can generate water mist with different concentrations.
In the technical scheme, the sunlight simulation device is used for simulating the influence of sunlight on scattering, refraction and the like of an environmental medium and testing the influence of different sunlight on flame spectrum transmittance; the aerosol generator is used for simulating PM particles without filling particle size and concentration, and testing the influence of different PM particles on flame spectral transmittance; the humidity generator is used for simulating the humidity in the environment, namely simulating the humidity of the environment, and testing the influence of different humidities on the spectral transmittance of the flame.
In a preferred embodiment of the present invention, the solar light simulation device includes a replaceable light source, a solar light simulation filter, an optical integrator, and a reflector, wherein light emitted from the light source is filtered by the solar light simulation filter and then is emitted to the optical integrator, integrated by the optical integrator and then is emitted to the reflector, and is reflected by the reflector and then is emitted to the medium filling chamber.
In the technical scheme, the intensity of light emitted by the light source is adjusted by changing different types of light sources, so that sunlight with different intensities is simulated.
In a preferred embodiment of the invention, the light source and the solar simulation filter are on one optical path or not on one optical path; when the light source and the sunlight simulation filter are not on the same light path, a reflector is arranged between the light source and the sunlight simulation filter, and light emitted by the light source is reflected by the reflector and then is emitted to the sunlight simulation filter.
In a preferred embodiment of the invention, a lens mounting groove is arranged between the medium filling chamber and the infrared spectrometer, the sensor lens is detachably arranged in the lens mounting groove, the heating device is a heating wire which is arranged in the lens mounting groove and can be used for adjusting the power for heating the lens, and a thermometer for measuring the temperature of the sensor lens is also arranged on the lens mounting groove.
In the technical scheme, the sensor lenses are installed by arranging the lens installation grooves, so that lenses used by various sensors can be simulated. The thermometer is used for monitoring the temperature of the sensor lens; the heating device adopts the heating wire, has simple structure and low cost, and meets the use function.
In another preferred embodiment of the invention, through holes are formed in one side of the medium charging chamber close to the flame and one side of the medium charging chamber close to the infrared spectrometer, observation windows made of high-temperature resistant quartz glass and used for blocking the through holes are arranged in the two through holes, and the infrared spectrometer can scan the flame generated by the flame generating device through the observation windows on the two sides of the medium charging chamber.
In the technical scheme, the observation windows arranged on the two sides of the medium filling chamber are made of high-temperature-resistant quartz glass, and the light path between flame and infrared spectrometer is not affected.
In another preferred embodiment of the present invention, when the ambient medium generating device is capable of generating PM particles, the medium charging chamber is further connected with a suction pump capable of sucking out the PM particles in the medium charging chamber, and an outlet of the suction pump is connected with an air cleaning system for treating the PM particles.
In the technical scheme, the suction pump is used for rapidly pumping PM particles filled in the medium chamber, so that subsequent tests are convenient to carry out; the air cleaning system is used for treating the extracted PM particles, and the PM particles after the test are prevented from polluting the environment.
In another preferred embodiment of the invention, the air cleaning system comprises a box body with an inlet and an outlet, the outlet of the suction pump is connected with the inlet of the box body, an exhaust fan is arranged at the outlet of the box body, and at least one filter screen and at least one anion absorption layer are sequentially arranged in the box body along the flowing direction of gas.
In the technical scheme, the particles pumped by the suction pump enter the negative ion absorption layer through primary filtration of the filter screen to be absorbed for the second time and then are discharged into the air, and the particles after the test can be well filtered and collected.
In another preferred embodiment of the invention, when the environmental medium generating device is capable of generating water mist, the medium charging chamber is also connected with a dehumidifier capable of extracting water vapor in the medium charging chamber, and an outlet of the dehumidifier is connected with a water collecting tank.
According to the technical scheme, the dehumidifier can be used for rapidly pumping the water vapor filled in the medium chamber into the water collecting tank, so that the follow-up test is convenient.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a flame spectral transmittance interference test platform by an environmental medium according to an embodiment of the present application.
Reference numerals in the drawings of the specification include: the device comprises a combustion tank 1, a fuel tank 2, an air supply valve 201, a flowmeter 202, a transparent baffle 3, an observation window 4, a medium filling chamber 5, a sunlight simulation device 6, a first reflecting mirror 71, a second reflecting mirror 72, an optical integrator 8, a sunlight simulation filter 9, a light source 10, a thermometer 11, a lens mounting groove 12, a heating device 13, an infrared spectrometer 14, a data analysis system 15, an aerosol generator 16, a humidity generator 17, a dehumidifier 18, a water collecting tank 19, a suction pump 20, an air cleaning system 21, a filter screen 22, an anion absorption layer 23, an exhaust fan 24, a box 25 and a shelf 26.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "vertical," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
The present invention provides a flame spectral transmittance interference test platform for an environmental medium, as shown in fig. 1, which in a preferred embodiment comprises a flame generating device for generating a flame, a medium charging chamber 5, an environmental medium generating device capable of providing an environmental medium into the medium charging chamber 5, a heating device 13 for heating a sensor lens, an infrared spectrometer 14, and a data analysis system 15 connected to the infrared spectrometer 14. The environmental medium generating device is located outside the medium charging chamber 5, and can provide one or more of simulated sunlight, simulated PM particles and water mist to the medium charging chamber 5.
The flame generating device comprises a fuel tank 2 and a combustion pool 1 which is connected with the fuel tank 2 through an air supply pipe and can generate flame, wherein a flowmeter 202 is arranged on the air supply pipe, the flowmeter 202 adopts a glass rotameter 202 for controlling the flow rate of fuel gas of the air supply pipe, so that the flame size of the combustion pool 1 is regulated.
The infrared spectrometer 14 of the invention adopts a Fourier transform infrared spectrometer, is a full-band and high-precision spectrum measuring and monitoring instrument, the data analysis system 15 can adopt a computer, and the signal output end of the infrared spectrometer 14 is connected with the computer. The medium filling chamber 5 is a closed space, and the medium filling chamber 5 and the sensor lens are sequentially arranged in the light path from the flame to the infrared spectrometer 14. The infrared spectrometer 14 can scan the flame generated by the flame generating device through the medium filling chamber 5 which is not filled with the environmental medium, the infrared spectrometer 14 can scan the flame generated by the flame generating device through the sensor lens and the medium filling chamber 5 which is not filled with the environmental medium, the infrared spectrometer 14 can also scan the flame generated by the flame generating device through the sensor lens and the medium filling chamber 5 which is filled with the environmental medium, and the scanning result is transmitted to the data analysis system 15.
For example, the infrared spectrometer 14 is located at the rightmost side, the lens mounting groove 12 for mounting the sensor lens is located at the left side of the infrared spectrometer 14, the medium filling chamber 5 is located at the left side of the lens mounting groove 12, the flame generated by the combustion tank 1 is located at the left side of the medium filling chamber 5, and the flame generated by the combustion tank 1, the medium filling chamber 5, the sensor lens and the infrared spectrometer 14 are all on one optical path.
The lens mounting groove 12 is positioned between the medium filling chamber 5 and the infrared spectrometer 14, the lens mounting groove 12 is a columnar through groove, the right end of the lens mounting groove 12 is used for mounting lenses used by different sensors, and the sensor lenses are detachably connected with the lens mounting groove 12, such as clamping connection or threaded connection. The heating device 13 is a heating wire with adjustable power, which is arranged in the lens mounting groove 12 and used for heating the lens, the lens mounting groove 12 is also provided with a thermometer 11 for measuring the temperature of the sensor lens, and the thermometer 11 can be a thermocouple.
In a preferred embodiment, the medium filling chamber 5 is provided with through holes on the left side close to the flame and on the right side close to the infrared spectrometer 14, the two through holes are provided with observation windows 4 made of high-temperature resistant quartz glass and used for blocking the through holes, the observation windows 4 are sealed and glued with the medium filling chamber 5, and the infrared spectrometer 14 can scan the flame generated by the combustion pool 1 through the observation windows 4 on the two sides of the medium filling chamber 5.
Preferably, the environmental medium generating device of the present invention is capable of providing three environmental mediums of simulated sunlight, simulated PM particles, and water mist. Specifically, the environmental medium generating means includes a solar simulator 6, an aerosol generator 16, and a humidity generator 17.
The solar light simulated by the solar light simulation device 6 can be emitted into the medium charging chamber 5, and the solar light simulation device 6 can simulate solar light with different illumination intensities, and in the present embodiment, the solar light simulation device 6 is a device simulating solar light in the prior art.
The aerosol generator 16 is connected with the medium charging chamber 5 through a pipeline, and the aerosol generator 16 can generate aerosol particles with different particle sizes for simulating PM particles with different particle sizes, such as PM2.5 particles and PM10 particles; the emission frequency of the aerosol generator 16 is adjustable so that the concentration of aerosol particles in the medium-filled chamber 5 is adjustable. Preferably, the medium charging chamber 5 is provided therein with an aerosol sensor for detecting the concentration of aerosol particles therein.
The humidity generator 17 is connected with the medium filling chamber 5 through a pipeline, and the humidity generator 17 can generate water mist with different concentrations, namely, water particles in the form of gas or water mist can be controlled to be emitted so as to simulate the environment humidity. Preferably, the medium charging chamber 5 is provided with a humidity sensor for detecting the humidity inside thereof.
In another preferred embodiment, the top of the medium charging chamber 5 is made of a transparent baffle 3, the transparent baffle 3 is sealed and glued with the medium charging chamber 5, and the simulated solar energy irradiates into the medium charging chamber 5 from the top of the medium charging chamber 5 through the transparent baffle 3. The solar simulation device 6 includes a replaceable light source 10, a solar simulation filter 9, an optical integrator 8, and a mirror. The light source 10 is an artificial light source such as a metal halogen lamp, a carbon arc lamp, a halogen lamp, a tungsten filament lamp, a xenon lamp, an LED and the like, and can be replaced according to test conditions, and the power of the light source 10 is adjustable, so that the intensity of simulated sunlight is adjustable. The upper side of the transparent baffle 3 is provided with a reflector which is obliquely arranged from left to right from bottom to top, the reflector is a first reflector 71, the right side of the first reflector 71 is provided with a vertical optical integrator 8, the right side of the optical integrator 8 is provided with a vertical sunlight simulation filter 9, light emitted by the light source 10 is filtered by the sunlight simulation filter 9 and then is emitted to the optical integrator 8, and disordered light is integrated into uniform light through the optical integrator 8 and is emitted to the first reflector 71, and the light is reflected by the first reflector 71 and then is emitted to the medium filling chamber 5.
In the present embodiment, the light source 10 is disposed at the top of the lens mounting groove 12, the light generated by the light source 10 is directed upward, and in order to make the light generated by the light source 10 be directed to the solar light simulation filter 9, a mirror disposed obliquely from left to right from top to bottom is also disposed between the light source 10 and the solar light simulation filter 9, and is the second mirror 72, and the light generated by the light source 10 is reflected by the second mirror 72 and then directed to the solar light simulation filter 9. The light source 10 may be disposed on the right side of the solar light simulation filter 9, and the light generated by the light source 10 may be directly emitted to the solar light simulation filter 9.
In another preferred embodiment, the medium charging chamber 5 is further connected to a suction pump 20 capable of sucking out aerosol particles in the medium charging chamber 5, the suction pump 20 is a vacuum pump, and an air cleaning system 21 for treating aerosol particles is connected to an outlet of the suction pump 20. Specifically, the air cleaning system 21 includes a housing 25 having an inlet and an outlet, the outlet of the housing 25 being located on the right side of the inlet thereof, the outlet of the suction pump 20 being connected to the inlet on the left side of the housing 25, and an exhaust fan 24 being mounted at the outlet of the housing 25. At least one filter screen 22 and at least one negative ion absorbing layer 23 are sequentially arranged in the box body 25 along the flowing direction of the gas, for example, four filter screens 22 and two negative ion absorbing layers 23 are sequentially arranged from left to right. It should be noted that the air cleaning system 21 may also employ an air purifier in the prior art.
In another preferred embodiment, the medium charging chamber 5 is also connected with a dehumidifier 18 capable of extracting water vapor from the medium charging chamber 5, the outlet of the dehumidifier 18 is connected with a water collecting tank 19, and the water collecting tank 19 is used for collecting water extracted by the dehumidifier 18.
In another preferred embodiment, the test platform further comprises a shelf 26, such as a four-tier shelf, with the left side of the shelf 26 having room for mounting the fuel tank 2, and the combustion bowl 1 being located on the leftmost side of the fourth tier of the shelf 26. The combustion pool 1, the medium filling chamber 5, the lens mounting groove 12 and the infrared spectrometer 14 are sequentially arranged on a fourth layer of the shelf 26 from left to right, and the sunlight simulation device 6 is arranged above the medium filling chamber 5 and the lens mounting groove 12; the aerosol generator 16, the dehumidifier 18 and the data analysis system 15 are arranged on a third layer of the shelf 26 in sequence from left to right; the humidity generator 17 and the water collecting tank 19 are sequentially arranged on the second layer of the shelf 26 from left to right; the suction pump 20 and the air cleaning system 21 are arranged in the first layer of the shelves 26 in that order from left to right.
The working principle of the invention is as follows:
first, the infrared spectrometer 14 is turned on to scan the environment.
Next, the gas supply valve 201 of the fuel tank 2 is opened and adjusted to a proper flow rate, the combustion chamber 1 is ignited to generate flame (hereinafter referred to as a pool fire), the pool fire is scanned through the observation windows 4 on both sides of the medium charging chamber 5 using the infrared spectrometer 14, and a spectrogram is recorded as a comparison template. The observation windows 4 on both sides of the medium-filled chamber 5 are made of quartz glass, and all information of the quartz glass itself including the transmittance thereof and the like are known, so that the observation windows 4 do not serve as disturbance variables of the experiment.
Next, a desired sensor lens is fixed in the lens mounting groove 12, the heating device 13 is turned on to heat the periphery of the sensor lens, the surface temperature of the sensor lens is monitored by the thermometer 11, and when the desired temperature is reached, the cell fire is scanned through the sensor lens by using the infrared spectrometer 14. The sensor lens temperature is varied and the infrared spectrometer 14 is used to scan Chi Huo through the sensor lens to verify the transmittance of the sensor lens at different temperatures.
Again, the experiment was performed by generating aerosol particles introduced into the medium injection chamber 5 by the aerosol generator 16, generating water mist (generating water vapor) introduced into the medium injection chamber 5 by the humidity generator 17, and simulating sunlight injected into the medium injection chamber 5 by the sunlight simulation device 6 as variables, and the three variables may be introduced singly, mixed with two types, or mixed with three types of introduced medium injection chamber 5.
When aerosol particles are introduced as a single variable of an environmental medium on the premise of fixing a sensor lens, the aerosol particles are controlled in particle size and concentration by an aerosol generator 16, a cell fire is scanned through the sensor lens and the medium by using an infrared spectrometer 14, and the data analysis system 15 calculates the influence of aerosol particles with different particle sizes and concentrations on flame spectral transmittance by comparing a set spectrogram of the aerosol particles with a spectrogram of the cell fire alone and the spectrogram of the cell fire passing through the sensor lens. Similarly, when water mist is introduced as a single variable of the environmental medium, the data analysis system 15 calculates the effect of water mist of different concentrations (simulating different environmental humidity) on the spectral transmittance of the flame by comparing the spectral pattern of the set water mist concentration with the spectral pattern of the individual cell fire and the cell fire passing through the sensor lens. Similarly, when simulated sunlight is introduced as a single variable of the environmental medium, the data analysis system 15 calculates the effect of different intensities of sunlight on the spectral transmittance of the flame by comparing the set spectral patterns of the intensity of the sunlight with the spectral patterns of the individual cell fires and the cell fires passing through the sensor lenses.
After the test of introducing single aerogel particles is completed, the suction pump 20 is started to pump out the aerogel particles filled with the medium in the chamber 5, and the particles pumped by the suction pump 20 enter the negative ion absorption layer 23 through primary filtration of the filter screen 22 and are discharged into the air after secondary absorption is completed. After the single mist test is completed, the dehumidifier 18 is started to pump the mist of the medium filled in the chamber 5 to the water collecting tank 19.
On the premise of fixing the sensor lens, when various environmental mediums are used as variables for testing, aerosol particles, water mist and simulated sunlight generated by different light sources 10 are required to be quantitatively introduced into the medium charging chamber 5, required parameters are set, an infrared spectrometer 14 is used for scanning a pool fire through the sensor lens and the various environmental mediums, a spectrogram is recorded, and the influence of the synergistic effect of the various environmental mediums on the light transmittance is calculated through a data analysis system 15.
After the test of various environmental media is finished, firstly, the dehumidifier 18 is started to pump out the water vapor in the media filling chamber 5 into the water collecting tank 19, then, the suction pump 20 is started to pump out the dry aerogel particles in the media filling chamber 5, and the particles pumped by the suction pump 20 are filtered by the air cleaning system 21 and then discharged into the air.
When the environmental medium is introduced to test the spectral transmittance of the flame, the sensor lens is mounted, and the sensor can be restored to detect the sense of reality of the flame in a short distance. The sensor lens can be not installed for testing when the environment medium is introduced, and the sensor lens is not installed for testing the flame spectral transmittance of the environment medium (single variable, double variable or triple variable).
In the description of the present specification, reference to the terms "preferred implementation," "one embodiment," "some embodiments," "example," "a particular example" or "some examples" and the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The device is characterized by comprising a flame generating device for generating flame, a medium filling chamber, an environment medium generating device capable of providing environment medium for the medium filling chamber, a heating device for heating a sensor lens, an infrared spectrometer and a data analysis system connected with the infrared spectrometer;
The environment medium generating device is positioned outside the medium charging chamber and can provide one or more of simulated sunlight, simulated PM particles and water mist for the medium charging chamber;
The medium filling chamber and the sensor lens are sequentially arranged in the light path from flame to the infrared spectrometer, the infrared spectrometer can scan the flame generated by the flame generating device through the medium filling chamber which is not filled with the environment medium, the infrared spectrometer can scan the flame generated by the flame generating device through the sensor lens and the medium filling chamber which is not filled with the environment medium, and the infrared spectrometer can scan the flame generated by the flame generating device through the sensor lens and the medium filling chamber which is filled with the environment medium and transmit the scanning result to the data analysis system.
2. The platform for testing the spectral transmittance interference of environmental media to flames according to claim 1, wherein the flame generating device comprises a fuel tank and a combustion tank which is connected with the fuel tank through an air supply pipe and can generate flames.
3. The flame spectral transmittance interference test platform according to claim 1 wherein the environmental medium generating device comprises one or more of a solar simulator, an aerosol generator, a humidity generator;
the solar light simulated by the solar light simulation device can be emitted into a medium filling room, and the solar light simulation device can simulate solar light with different illumination intensities;
And/or the aerosol generator is connected with the medium filling chamber through a pipeline, and the aerosol generator can generate aerosol particles with different particle diameters and/or concentrations;
And/or the humidity generator is connected with the medium filling chamber through a pipeline, and the humidity generator can generate water mist with different concentrations.
4. The platform for testing the interference of the environmental medium on the spectral transmittance of flame according to claim 3, wherein the sunlight simulation device comprises a replaceable light source, a sunlight simulation filter, an optical integrator and a reflecting mirror, wherein the light emitted by the light source is filtered by the sunlight simulation filter and then is emitted to the optical integrator, is integrated by the optical integrator and then is emitted to the reflecting mirror, and is reflected by the reflecting mirror and then is emitted to the medium filling chamber.
5. The platform for testing the interference of the environmental medium on the spectral transmittance of flame according to claim 4, wherein the light source and the sunlight simulation filter are on one optical path or not on one optical path; when the light source and the sunlight simulation filter are not on the same light path, a reflector is arranged between the light source and the sunlight simulation filter, and light emitted by the light source is reflected by the reflector and then is emitted to the sunlight simulation filter.
6. The platform for testing the interference of the environmental medium on the flame spectral transmittance according to claim 1, wherein a lens mounting groove is arranged between the medium filling chamber and the infrared spectrometer, a sensor lens is detachably mounted in the lens mounting groove, the heating device is a power-adjustable heating wire which is mounted in the lens mounting groove and used for heating the lens, and a thermometer for measuring the temperature of the sensor lens is further mounted on the lens mounting groove.
7. The platform for testing the interference of the environmental medium on the spectral transmittance of the flame according to any one of claims 1 to 6, wherein through holes are formed in one side, close to the flame, of the medium charging chamber and one side, close to the infrared spectrometer, of the medium charging chamber, observation windows made of high-temperature-resistant quartz glass and used for blocking the through holes are formed in the two through holes, and the infrared spectrometer can scan the flame generated by the flame generating device through the observation windows on two sides of the medium charging chamber.
8. The ambient medium to flame spectral transmittance interference test platform according to any one of claims 1-6, wherein when the ambient medium generating device is capable of generating PM particles, the medium charging chamber is further connected with a suction pump capable of pumping out PM particles in the medium charging chamber, and an outlet of the suction pump is connected with an air cleaning system for treating PM particles.
9. The platform for testing the interference of the environmental medium to the spectral transmittance of flame according to claim 8, wherein the air cleaning system comprises a box body with an inlet and an outlet, the outlet of the suction pump is connected with the inlet of the box body, the outlet of the box body is provided with an exhaust fan, and at least one filter screen and at least one anion absorption layer are sequentially arranged in the box body along the flowing direction of gas.
10. The platform for testing the interference of the environmental medium on the spectral transmittance of flames according to any one of claims 1 to 6, wherein when the environmental medium generating device can generate water mist, the medium charging chamber is further connected with a dehumidifier which can pump out water vapor in the medium charging chamber, and an outlet of the dehumidifier is connected with a water collecting tank.
CN202210806134.7A 2022-07-08 2022-07-08 Flame spectrum transmittance interference test platform by environment medium Active CN115060680B (en)

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