CN107389514B - Atmospheric haze acquisition, analysis and release device - Google Patents
Atmospheric haze acquisition, analysis and release device Download PDFInfo
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- CN107389514B CN107389514B CN201710515083.1A CN201710515083A CN107389514B CN 107389514 B CN107389514 B CN 107389514B CN 201710515083 A CN201710515083 A CN 201710515083A CN 107389514 B CN107389514 B CN 107389514B
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Abstract
The invention discloses an atmospheric haze collecting, analyzing and releasing device which comprises an atmospheric haze collecting device and a haze gas generating device, wherein the atmospheric haze collecting device and the haze gas generating device are connected in parallel and then are connected with a haze gas concentrating device through a first pipeline, the haze gas concentrating device is also connected with an air quality monitoring analyzer through a second pipeline, and the haze gas concentrating device is also connected with a contamination cabin through a third pipeline; be equipped with first sample collection channel between first pipeline and the second pipeline, be equipped with the second sample collection channel between contamination cabin and the air quality monitoring analysis appearance, still be equipped with the three-way diverter valve on the first pipeline, all be equipped with semiconductor gas detector in haze gas enrichment facility and the contamination cabin, two semiconductor gas detector are connected with the air quality monitoring analysis appearance through the wire respectively. The invention can simulate weather and pollution conditions of the haze weather, and is used for simulating long-period and severe haze environments and related animal experiments.
Description
Technical Field
The invention belongs to the technical field of atmospheric environment research equipment, and particularly relates to an atmospheric haze collecting, analyzing and releasing device.
Background
Haze weather is an atmospheric pollution state, and haze is a general expression for the exceeding of the content of various suspended particulate matters in the atmosphere, and particularly PM2.5 (particulate matters with an aerodynamic equivalent diameter of 2.5 micrometers or less) is considered as a 'murder' causing haze weather. The haze particles contain hundreds of chemical components, and can invade human bodies when people do not prevent the haze particles, so that diseases of respiratory systems, cardiovascular systems, blood systems, reproductive systems and the like are caused. In order to scientifically prevent and treat haze, a large amount of researches on experimental animals are required for a long time in order to explore the mechanism of haze-induced diseases, so that a related haze gas generation and collection device is required, and hardware support is provided for the related experiments for researching haze.
Disclosure of Invention
The invention aims to provide an atmospheric haze collecting, analyzing and releasing device which can collect atmospheric haze or generate simulated haze gas and carry out long-term chronic toxicology experiments by utilizing the haze gas.
The technical scheme adopted by the invention is as follows: the atmospheric haze collecting, analyzing and releasing device comprises an atmospheric haze collecting device and a haze gas generating device, wherein the atmospheric haze collecting device and the haze gas generating device are connected in parallel and then are connected with a haze gas concentrating device through a first pipeline, the haze gas concentrating device is also connected with an air quality monitoring analyzer through a second pipeline, and the haze gas concentrating device is also connected with a contamination cabin through a third pipeline; be equipped with first sample collection channel between first pipeline and the second pipeline, be equipped with the second sample collection channel between contamination cabin and the air quality monitoring analysis appearance, still be equipped with the three-way diverter valve on the first pipeline, all be equipped with semiconductor gas detector in haze gas enrichment facility and the contamination cabin, two semiconductor gas detector are connected with the air quality monitoring analysis appearance through the wire respectively.
The present invention is also characterized in that,
the atmospheric haze collection device comprises an air inlet pipe, one end of the air inlet pipe is connected with an air pump, and an air outlet of the air pump is communicated with the first pipeline through a pipeline.
The haze gas concentration device comprises a shell and an air pump, wherein the top of the shell is provided with a plurality of through holes, each through hole is provided with a pipeline, the plurality of pipelines are connected in series and then connected with the air pump, each through hole is covered with a microporous filter membrane, and an ultrasonic oscillator is further arranged in each pipeline; two opposite side walls of the shell are respectively provided with a haze inlet and a haze outlet, the atmosphere haze collecting device and the haze gas generating device which are connected in parallel are communicated with the first pipeline through the haze inlet, and the first haze outlet is communicated with the contamination cabin through the third pipeline; the bottom of the shell is also provided with a second haze outlet which is communicated with the air quality monitoring analyzer through a second pipeline; the shell is also connected with an electrostatic remover.
The contamination cabin comprises a cabin body, a first gas dispersing pipeline and a second gas dispersing pipeline are arranged in the cabin body, a plurality of through holes are formed in the surfaces of the first gas dispersing pipeline and the second gas dispersing pipeline, the first gas dispersing pipeline and the second gas dispersing pipeline are respectively connected in parallel to form a third pipeline after penetrating through the outer wall of the cabin body through the pipelines, an animal channel is arranged on the side wall of the cabin body, an animal feeder is arranged in the cabin body, an illuminating lamp and an ultraviolet disinfection lamp are further arranged on the inner wall of the cabin body, an air pressure adjusting device is arranged on the outer wall of the cabin body and comprises an air inlet pipe, the air inlet pipe is communicated with the outer wall of the cabin body, a one-way valve is arranged in the air inlet pipe, a carbon dioxide purifier is further arranged on the outer wall of the cabin body and is communicated with the cabin body through the pipelines, and an observation window is arranged on the outer wall of the cabin body and is communicated with an air quality monitoring analyzer through a second sample collecting channel.
The haze gas generating device comprises a gas source pump, an exhaust port of the gas source pump is communicated with a combustion waste gas generating device, an ultrasonic water mist aerosol generating device and a powder aerosol generating device through pipelines, exhaust ports of the combustion waste gas generating device, the ultrasonic water mist aerosol generating device and the powder aerosol generating device are communicated with a haze component aging device through pipelines, constant pressure valves are arranged at air inlets of the combustion waste gas generating device, the ultrasonic water mist aerosol generating device and the powder aerosol generating device, and check valves are arranged at air outlets of the combustion waste gas generating device, the ultrasonic water mist aerosol generating device and the powder aerosol generating device.
The combustion waste gas generating device comprises a combustion chamber, wherein an air inlet and an air outlet are formed in the outer wall of the combustion chamber, a combustion liner is arranged in the combustion chamber, a through hole for the combustion liner to enter and exit is formed in the side wall of the combustion chamber, a lock fixing device is arranged at the edge of the through hole, and an electric heating wire is further arranged in the combustion liner.
The ultrasonic water mist aerosol generating device comprises a shell, wherein an air inlet and an air outlet are formed in the outer wall of the shell, an ultrasonic atomizer is arranged in the shell, a charging groove is formed in the ultrasonic atomizer, a charging pipeline is arranged on the charging groove, one end of the charging pipeline is communicated with the charging groove, and the other end of the charging pipeline penetrates through the shell.
The powder aerosol generating device comprises a powder aerosol generating cavity and a powder feeder, wherein the powder feeder is positioned outside the powder aerosol generating cavity and is communicated with the powder aerosol generating cavity through a pipeline, an air outlet is formed in the top of the powder aerosol generating cavity, an air inlet is formed in the bottom of the powder aerosol generating cavity, a dust cover is further arranged at the bottom of the powder aerosol generating cavity and covers the air inlet, a powder impactor is arranged in the powder aerosol generating cavity and is communicated with the powder feeder through a pipeline, an aerosol diffuser is connected to the top of the powder feeder through a pipeline, and the aerosol diffuser is a sphere with a hollow inside and a through hole on the surface.
The haze component aging device comprises an aging cavity, wherein an ultraviolet light source is arranged on the inner surface of the top of the aging cavity, a circulating blower is further arranged in the aging cavity, a mixed gas diffuser is further arranged in the aging cavity, and the mixed gas diffuser is respectively communicated with a combustion waste gas generating device, an ultrasonic water mist aerosol generating device and a powder aerosol generating device through pipelines, and is a sphere with a hollow interior and through holes on the surface.
The beneficial effects of the invention are as follows: the air quality monitoring analyzer in the device can monitor the haze simulation sample in real time, and the contamination cabin provides a living environment required by animals and provides a good experimental basis for obtaining real and reliable experimental data; the device adopts two working modes, and the organic combination of the two modes ensures the continuity and accuracy of long-term chronic toxicological experiments.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of the haze gas concentration device of the present invention;
FIG. 3 is a schematic view of the structure of the contamination chamber of the present invention;
FIG. 4 is a schematic view showing the structure of the haze gas generating device according to the present invention;
FIG. 5 is a schematic view showing the structure of a haze component aging device in the haze gas generating device according to the present invention;
FIG. 6 is a schematic view showing the structure of a powder aerosol generating device in the haze gas generating device according to the present invention;
FIG. 7 is a schematic view showing the structure of a combustion exhaust gas generating apparatus in the haze gas generating apparatus according to the present invention;
fig. 8 is a schematic structural view of an ultrasonic mist aerosol generating device in the haze gas generating device according to the present invention.
In the figure, an atmospheric haze collecting device, a haze gas concentrating device, a first pipeline, a second pipeline, a third pipeline, a contamination cabin, an air quality monitoring analyzer, a haze gas generating device, a first sample collecting channel, a second sample collecting channel and a three-way switching valve are respectively arranged in the figure, wherein the first sample collecting channel, the second sample collecting channel and the third sample collecting channel are respectively arranged in the figure, the third sample collecting channel and the third sample collecting channel are respectively arranged in the figure, the contamination cabin is arranged in the figure, the air quality monitoring analyzer is arranged in the figure, the haze gas generating device is arranged in the figure, the first sample collecting channel is arranged in the figure, the second sample collecting channel is arranged in the figure, and the third sample collecting channel is arranged in the figure;
2-1 parts of a first shell, 2-2 parts of an air pump, 2-3 parts of a microporous filter membrane, 2-4 parts of an ultrasonic oscillator and 2-5 parts of an electrostatic remover;
6-1 parts of a cabin, 6-2 parts of an animal channel, 6-3 parts of an animal feeder, 6-4 parts of a first gas distribution pipeline, 6-5 parts of a second gas distribution pipeline, 6-6 parts of a gas pressure regulating device, 6-7 parts of a carbon dioxide purifier and 6-8 parts of a viewing window;
8-1 parts of an air source pump, 8-2 parts of a haze component aging device, 8-3 parts of a powder aerosol generating device, 8-4 parts of a combustion waste gas generating device and 8-5 parts of an ultrasonic water mist aerosol generating device;
8-2-1 parts of an aging cavity, 8-2-2 parts of an ultraviolet light source, 8-2-3 parts of a circulating blower and 8-2-4 parts of a mixed gas diffuser;
8-3-1 parts of powder aerosol generating cavity, 8-3-2 parts of powder impactor, 8-3-3 parts of powder feeder, 8-3-4 parts of dust cover and 8-3-5 parts of aerosol diffuser;
8-4-1 parts of combustion chamber, 8-4-2 parts of lock fixing device, 8-4-3 parts of combustion liner and 8-4-4 parts of heating wire;
8-5-1 parts of a second shell, 8-5-2 parts of an ultrasonic atomizer, 8-5-3 parts of a charging groove and 8-5-4 parts of a charging pipeline.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention discloses an atmospheric haze collecting, analyzing and releasing device, which is shown in figure 1, and comprises an atmospheric haze collecting device 1 and a haze gas generating device 8, wherein the atmospheric haze collecting device 1 and the haze gas generating device 8 are connected in parallel and then connected with a haze gas concentrating device 2 through a first pipeline 3, the haze gas concentrating device 2 is also connected with an air quality monitoring analyzer 7 through a second pipeline 4, and the haze gas concentrating device 2 is also connected with an contamination cabin 6 through a third pipeline 5; a first sample collection channel 9 is arranged between the first pipeline 3 and the second pipeline 4, a second sample collection channel 10 is arranged between the contamination cabin 6 and the air quality monitoring analyzer 7, and a three-way switching valve 11 is also arranged on the first pipeline 3; the haze gas concentration device 2 and the contamination cabin 6 are respectively internally provided with a semiconductor gas detector, and the two semiconductor gas detectors are respectively connected with the air quality monitoring analyzer 7 through wires.
The atmospheric haze collection device 1 comprises an air inlet pipe, one end of the air inlet pipe is connected with an air pump, and an air outlet of the air pump is communicated with the first pipeline 3 through a pipeline.
As shown in fig. 2, the haze gas concentration device 2 comprises a first shell 2-1 and an air pump 2-2, wherein a plurality of through holes are formed in the top of the first shell 2-1, each through hole is provided with a pipeline, the plurality of pipelines are connected with the air pump 2-2 after being connected in series, each through hole is covered with a microporous filter membrane 2-3, and an ultrasonic oscillator 2-4 is further arranged in each pipeline; two opposite side walls of the first shell 2-1 are respectively provided with a haze inlet and a haze outlet, the atmosphere haze collecting device 1 and the haze gas generating device 8 which are connected in parallel are communicated with the first pipeline 3 through the haze inlet, and the first haze outlet is communicated with the contamination cabin 6 through the third pipeline 5; the bottom of the first shell 2-1 is also provided with a second haze outlet which is communicated with an air quality monitoring analyzer 7 through a second pipeline 4; the first housing 2-1 is also connected with an electrostatic remover 2-5.
As shown in FIG. 3, the contamination cabin 6 comprises a cabin body 6-1, a first gas distribution pipeline 6-4 and a second gas distribution pipeline 6-5 are arranged in the cabin body 6-1, a plurality of through holes are formed in the surfaces of the first gas distribution pipeline 6-4 and the second gas distribution pipeline 6-5, the first gas distribution pipeline 6-4 and the second gas distribution pipeline 6-5 respectively penetrate through the outer wall of the cabin body 6-1 through pipelines and then are connected in parallel to form a third pipeline 5, an animal channel 6-2 is arranged on the side wall of the cabin body 6-1, an animal feeder 6-3 is arranged in the cabin body 6-1, an illuminating lamp and an ultraviolet disinfection lamp are further arranged on the inner wall of the cabin body 6-1, a gas pressure adjusting device 6-6 is mounted on the outer wall of the cabin body 6-1, the gas pressure adjusting device 6-6 comprises a gas inlet pipe, the gas inlet pipe is communicated with the outer wall of the cabin body 6-1, a one-way valve is arranged in the gas inlet pipe, a carbon dioxide purifier 6-7 is communicated with the cabin body 6-1 through the pipelines, an observation window 6-8 is arranged on the outer wall of the cabin body 6-1, and the cabin body 6-1 is communicated with the air quality of the air sample through a second monitoring channel 10.
As shown in FIG. 4, the haze gas generating device 8 comprises a gas source pump 8-1, wherein the exhaust port of the gas source pump 8-1 is communicated with a combustion exhaust gas generating device 8-4, an ultrasonic water mist aerosol generating device 8-5 and a powder aerosol generating device 8-3 through pipelines, the exhaust ports of the combustion exhaust gas generating device 8-4, the ultrasonic water mist aerosol generating device 8-5 and the powder aerosol generating device 8-3 are communicated with a haze component aging device 8-2 through pipelines, constant pressure valves are arranged at the air inlets of the combustion exhaust gas generating device 8-4, the ultrasonic water mist aerosol generating device 8-5 and the powder aerosol generating device 8-3, and check valves are arranged at the air outlets of the combustion exhaust gas generating device 8-4, the ultrasonic water mist aerosol generating device 8-5 and the powder aerosol generating device 8-3.
As shown in FIG. 7, the combustion exhaust gas generating device 8-4 comprises a combustion chamber 8-4-1, wherein an air inlet and an air outlet are arranged on the outer wall of the combustion chamber 8-4-1, a combustion liner 8-4-3 is arranged in the combustion chamber 8-4-1, a through hole for the inlet and outlet of the combustion liner 8-4-3 is formed in the side wall of the combustion chamber 8-4-1, a lock fixing device 8-4-2 is arranged at the edge of the through hole, and an electric heating wire 8-4-4 is arranged in the combustion liner 8-4-3.
As shown in FIG. 8, the ultrasonic water mist aerosol generating device 8-5 comprises a second shell 8-5-1, an air inlet and an air outlet are formed in the outer wall of the second shell 8-5-1, an ultrasonic atomizer 8-5-2 is arranged in the second shell 8-5-1, a material loading groove 8-5-3 is formed in the ultrasonic atomizer 8-5-2, a material loading pipeline 8-5-4 is arranged in the material loading groove 8-5-3, one end of the material loading pipeline 8-5-4 is communicated with the material loading groove 8-5-3, and the other end of the material loading pipeline 8-5-4 penetrates through the second shell 8-5-1.
As shown in fig. 6, the powder aerosol generating device 8-3 comprises a powder aerosol generating cavity 8-3-1 and a powder feeder 8-3-3, wherein the powder feeder 8-3-3 is positioned outside the powder aerosol generating cavity 8-3-1 and is communicated with the powder aerosol generating cavity 8-3-1 through a pipeline, an air outlet is formed in the top of the powder aerosol generating cavity 8-3-1, an air inlet is formed in the bottom of the powder aerosol generating cavity 8-3-1, a dust cover 8-3-4 is further arranged at the bottom of the powder aerosol generating cavity 8-3-1, the dust cover 8-3-4 covers the air inlet, a powder impactor 8-3-2 is arranged inside the powder aerosol generating cavity 8-3-1, the powder impactor 8-3-2 is communicated with the powder feeder 8-3-3 through a pipeline, an aerosol diffuser 8-3-5 is connected to the top of the powder feeder 8-3-3 through a pipeline, and the aerosol diffuser 8-3-5 is a sphere with a through hole in the surface and is hollow inside.
As shown in FIG. 5, the haze component aging device 8-2 comprises an aging cavity 8-2-1, wherein the inner surface of the top of the aging cavity 8-2-1 is provided with an ultraviolet light source 8-2-2, a circulating blower 8-2-3 is further arranged in the aging cavity 8-2-1, a mixed gas diffuser 8-2-4 is further arranged in the aging cavity 8-2-1, and the mixed gas diffuser 8-2-4 is respectively communicated with a combustion exhaust gas generating device 8-4, an ultrasonic water mist aerosol generating device 8-5 and a powder aerosol generating device 8-3 through pipelines, and the mixed gas diffuser 8-2-4 is a sphere with a hollow interior and through holes on the surface.
As shown in fig. 1, there are two usage modes of an atmospheric haze collection, analysis and release device:
mode one: collecting, analyzing, concentrating and contaminating
When there is haze weather and concentration up to standard, this device execution mode one: atmospheric haze is collected by using the atmospheric haze collecting device 1, and meanwhile, partial haze samples are extracted to analyze haze components by using the air quality monitoring analyzer 7, and data are recorded. The collected haze gas is compressed to a certain extent through the haze gas concentration device 2 and is discharged into the contamination cabin 6 to contaminate experimental animals.
Mode two: reduction-Release-contamination
When the haze concentration is low to the haze gas concentration device 2 can not be lifted to the experiment demand concentration, the device executes the second mode: the haze source is switched from the atmospheric haze collecting device 1 to the haze gas generating device 8. The haze gas generating device 8 can reduce with high simulation according to haze component data collected in haze weather, generates contaminated gas similar to original haze, and discharges the contaminated gas to the contaminated cabin 6 to contaminate experimental animals.
The organic combination of the two modes ensures the continuity and accuracy of long-term chronic toxicological experiments.
Wherein the atmosphere haze collecting device 1 and the haze gas generating device 8 are in a parallel connection state. And determining the operation mode of the device according to the external atmosphere haze gas environment when an animal experiment is carried out.
The main body structure of the atmospheric haze collecting device 1 is a steel pipe and an air pump, an antistatic coating is coated in the steel pipe, the steel pipe is used for absorbing outdoor haze gas, the antistatic coating is coated in the steel pipe for preventing static electricity from absorbing haze particles, the steel pipe is placed according to the laboratory structural design, no shielding is needed at an inlet, no other dust pollution source exists in the inlet of 70 meters, an air pump air suction port is connected with the steel pipe, and the outdoor haze gas is absorbed through the steel pipe. The haze gas enrichment facility 2 is connected to the air pump gas vent, and the air pump requires the constant current, and gas flow is invariable basically. The air pump shell is connected with the static electricity remover.
The haze gas concentration device 2 is: the first shell 2-1 of rectangle steel, the millipore filtration membrane 2-3 connects static remover 2-5 on rectangle steel shell 2-1, when aspiration pump 2-2 during operation forms negative pressure negative at the outer end of millipore filtration membrane 2-3, the air outflow in the haze gas enrichment facility 2, because the big unable filter membrane that sees through of haze particle diameter can be detained in haze gas enrichment facility 2, haze concentration is gradually improved, ultrasonic wave oscillator 2-4 (Shenzhen Fukeda ultrasonic equipment, model CH-S42-50x 2.6) is to millipore filtration membrane 2-3 (quartz fiber filter membrane, 2 mu m, MUNKTLL company) on the transmission ultrasonic wave, the haze particle can't adhere to. When the experimental standard is reached, the concentrated haze gas is introduced into the contamination cabin 6.
The three-way switching valve 11 is a T-shaped valve, and can be selectively communicated with one of the atmospheric haze collecting device 1 and the haze gas generating device 8. The whole device can be switched between the atmospheric haze collecting device 1-the haze gas concentrating device 2 or the haze gas generating device 8-the haze gas concentrating device 2.
The purpose of the contamination chamber 6 is to provide a stable contamination environment for the animal and relatively comfortable survival conditions for the laboratory animal. In the case of long-term animal experiments, food and water are required to be fed into the animal feeder 6-3, and carbon dioxide is removed by using the carbon dioxide purifier 6-7. The outer shell of the contamination cabin 6 is provided with an air pressure adjusting device 6-6, the air pressure adjusting device 6-6 is in a structure that a section of steel pipe is connected to an opening of the outer shell of the cabin body 6-1, a one-way valve is arranged in the air pressure adjusting device, and when the air pressure in the contamination cabin 6 is larger than the external atmospheric pressure, part of haze gas can be released to reduce the pressure. The carbon dioxide purifier 6-7 is a glass tube, sodium peroxide and diluent auxiliary materials are filled in the tube, and the sodium peroxide can absorb carbon dioxide and release oxygen in a one-to-one mode. The gas is sent back into the contamination cabin 6 after flowing through the carbon dioxide purifier 6-7 by a fan arranged on a pipeline connecting the carbon dioxide purifier 6-7 and the cabin body 6-1.
The air quality monitoring analyzer 7 (dianwei BXS 70) samples through the second pipeline 4, the first sample collecting channel 9 and the second sample collecting channel 10, and receives haze samples from three sample collecting channels, electromagnetic valves are respectively arranged on the three pipelines, the three pipelines are all steel pipes, antistatic coatings are coated in the steel pipes, and the antistatic coatings are required to be coated in the steel pipes in order to prevent static electricity from adsorbing haze particles. The method can be used for respectively detecting and identifying, and aims to detect the physicochemical properties of solid particles in haze gas. The air quality monitoring analyzer 7 also includes a circuit detection system that receives signals from semiconductor gas monitors installed in the haze gas concentration device 2 and in the contamination cabin 6. The function is to grasp the gas composition (such as oxygen concentration, carbon dioxide concentration) and the temperature and humidity in the haze gas concentration device 2 and the contamination cabin 6. The experimental real-time data can be transmitted to a computer, and the data is recorded, collected and analyzed by using software.
As shown in fig. 4, oxygen required for combustion is supplied to the combustion exhaust gas generating device 8-4 by the gas source pump 8-1. An air source pump 8-1 (OUTSTANDING, 750W-30L), wherein positive pressure is generated by the air source pump 8-1, the powder aerosol generated by the powder aerosol generating device 8-3 and the water aerosol generated by the ultrasonic water aerosol generating device 8-5 are enabled to be generated by the positive pressure, substances generated by the three devices are mixed and then enter the haze component aging device 8-2, the mixture in the haze component aging device 8-2 is catalyzed by ultraviolet rays, haze generated in the atmosphere is simulated, the haze component aging device 8-2 is communicated with the atmosphere quality monitor 8-3, the generated simulated haze is detected, and detection data is fed back to the computer signal interaction feedback control device, so that the normal operation of the system is ensured.
The combustion waste gas generating device 8-4 heats the combustible material by using the electric heating wire 8-4-4 to reach the ignition point, and the introduced constant pressure air contains oxygen to fully combust the combustible material and generate combustion waste gas; when the combustion waste gas generating device 8-4 is used, the lock fixing device 8-4-2 with the sealing strips is opened, the combustion liner 8-4-3 is pulled out, the burnt material is put into the combustion liner 8-4-3, the combustion liner 8-4-3 is closed, the lock fixing device 8-4-2 is closed, the power supply of the heating wire 8-4-4 is opened, after the combustible material is combusted, the power supply of the heating wire 8-4-4 is closed, the constant pressure valve on the air inlet pipeline on the outer wall of the combustion chamber 8-4-1 is opened, constant pressure air is introduced, oxygen is provided for the combustible material, and the combustion waste gas is driven to enter the haze component aging device 8-2 through the check valve on the pipeline connected with the air outlet.
The ultrasonic water mist aerosol generating device 8-5 is similar to a common ultrasonic humidifier, ultrasonic energy is generated by utilizing an ultrasonic transducer to atomize liquid, the ultrasonic energy atomizer 8-5-2 can atomize the liquid to form water mist aerosol, and injected air forms positive pressure to push the water mist aerosol to be injected into a pipeline communicated with the haze component aging device 8-2. The outer shell 8-5-1 of the ultrasonic water mist aerosol generating device 8-5 is cuboid, is made of metal and is provided with a gas inlet and a gas outlet; the pipeline at the gas inlet is provided with a constant pressure valve, so that the pressure and flow rate of air in the process of entering the pipeline are ensured to be stable. The check valve is arranged on the pipeline at the gas outlet, so that the gas can be prevented from flowing backwards and the pressure can be kept stable. The ultrasonic atomizer 8-5-2 (YADU/Adam, AW 0509) is a piezoelectric ultrasonic transducer, and uses cavitation effect to form aerosol from liquid, and the aerosol is diluted and then enters the haze component aging device 8-2 through a pipeline.
The powder feeder 8-3-3 in the powder aerosol generating device 8-3 is arranged outside the powder aerosol generating cavity 8-3-1, the powder feeder 8-3-3 comprises a feeding funnel, the bottom of the feeding funnel is communicated with the powder impactor 8-3-2 through a pipeline, a ball valve is further arranged at the outlet of the bottom of the feeding funnel, the pressure of the ball valve is reduced by air flow, the powder at a powder feeding port is pushed into the powder impactor 8-3-2 by the atmospheric pressure, and the powder is impacted by the powder impactor 8-3-2, so that the dispersion degree of the powder aerosol is increased. The treated aerosol is released into the housing 8-8-1 through the aerosol diffuser 8-3-5, diluted and then enters the haze component aging device 8-2 through the pipeline.
The haze component aging device 8-2 uniformly mixes the gases generated by the combustion exhaust gas generating device 8-4, the ultrasonic water mist aerosol generating device 8-5 and the powder aerosol generating device 8-3, the temperature and the humidity of the interior are controlled by the ultrasonic water mist aerosol generating device 8-5 by controlling the temperature and the humidity of the interior, the temperature is controlled by installing a section of resistance wire on the circulating blower 8-2-3 to heat and flow the temperature, the resistance wire is controlled by a temperature control module (brand is RISYM), and the fresh haze gas is aged by ultraviolet rays, so that each gas component can be fully mixed after the circulating blower 8-2-3 is started to prevent deposition, and the gas enters the atmosphere quality monitoring device through a pipeline to be detected.
The experimental device of the invention has the advantages that: the air quality monitoring analyzer in the device can monitor the haze simulation sample in real time, and the contamination cabin provides a living environment required by animals and provides a good experimental basis for obtaining real and reliable experimental data; the device adopts two working modes, and the organic combination of the two modes ensures the continuity and accuracy of long-term chronic toxicological experiments.
Claims (2)
1. The atmospheric haze collecting, analyzing and releasing device is characterized by comprising an atmospheric haze collecting device (1) and a haze gas generating device (8), wherein the atmospheric haze collecting device (1) and the haze gas generating device (8) are connected in parallel and then connected with a haze gas concentrating device (2) through a first pipeline (3), the haze gas concentrating device (2) is also connected with an air quality monitoring analyzer (7) through a second pipeline (4), and the haze gas concentrating device (2) is also connected with a contamination cabin (6) through a third pipeline (5); a first sample collection channel (9) is arranged between the first pipeline (3) and the second pipeline (4), a second sample collection channel (10) is arranged between the contamination cabin (6) and the air quality monitoring analyzer (7), a three-way switching valve (11) is further arranged on the first pipeline (3), semiconductor gas detectors are arranged in the haze gas concentration device (2) and the contamination cabin (6), and the two semiconductor gas detectors are respectively connected with the air quality monitoring analyzer (7) through wires;
the atmospheric haze collecting device (1) comprises an air inlet pipe, one end of the air inlet pipe is connected with an air pump, and an air outlet of the air pump is communicated with the first pipeline (3) through a pipeline;
the haze gas concentration device (2) comprises a first shell (2-1) and an air pump (2-2), wherein a plurality of through holes are formed in the top of the first shell (2-1), each through hole is provided with a pipeline, the plurality of pipelines are connected with the air pump (2-2) after being connected in series, each through hole is covered with a microporous filter membrane (2-3), and an ultrasonic oscillator (2-4) is further arranged in each pipeline; two opposite side walls of the first shell (2-1) are respectively provided with a haze inlet and a haze outlet, the atmosphere haze collecting device (1) and the haze gas generating device (8) which are connected in parallel are communicated with the first pipeline (3) through the haze inlet, and the first haze outlet is communicated with the contamination cabin (6) through the third pipeline (5); the bottom of the first shell (2-1) is also provided with a second haze outlet, and the second haze outlet is communicated with an air quality monitoring analyzer (7) through a second pipeline (4); the first shell (2-1) is also connected with an electrostatic remover (2-5);
the contamination cabin (6) comprises a cabin body (6-1), a first gas distribution pipeline (6-4) and a second gas distribution pipeline (6-5) are arranged in the cabin body (6-1), a plurality of through holes are formed in the surfaces of the first gas distribution pipeline (6-4) and the second gas distribution pipeline (6-5), the first gas distribution pipeline (6-4) and the second gas distribution pipeline (6-5) respectively penetrate through the outer wall of the cabin body (6-1) through pipelines and then are connected in parallel to form a third pipeline (5), an animal channel (6-2) is arranged on the side wall of the cabin body (6-1), an animal feeder (6-3) is arranged in the cabin body (6-1), an illuminating lamp and an ultraviolet disinfection lamp are further arranged on the inner wall of the cabin body (6-1), the air pressure adjusting device (6-6) comprises an air inlet pipe, the air inlet pipe is communicated with the outer wall of the cabin body (6-1), a one-way valve is arranged in the air inlet pipe, the cabin body (6-1) is further communicated with the carbon dioxide purifier (7) through the carbon dioxide purifier (6-1), an observation window (6-8) is arranged on the outer wall of the cabin body (6-1), and the outer wall of the cabin body (6-1) is communicated with an air quality monitoring analyzer (7) through a second sample collection channel (10);
the haze gas generating device (8) comprises a gas source pump (8-1), an exhaust port of the gas source pump (8-1) is communicated with a combustion waste gas generating device (8-4), an ultrasonic water mist aerosol generating device (8-5) and a powder aerosol generating device (8-3) through pipelines, exhaust ports of the combustion waste gas generating device (8-4), the ultrasonic water mist aerosol generating device (8-5) and the powder aerosol generating device (8-3) are communicated with a haze component aging device (8-2) through pipelines, constant pressure valves are arranged at air inlets of the combustion waste gas generating device (8-4), the ultrasonic water mist aerosol generating device (8-5) and the powder aerosol generating device (8-3), and check valves are arranged at air outlets of the combustion waste gas generating device (8-4), the ultrasonic water mist aerosol generating device (8-5) and the powder aerosol generating device (8-3);
the combustion waste gas generating device (8-4) comprises a combustion chamber (8-4-1), an air inlet and an air outlet are formed in the outer wall of the combustion chamber (8-4-1), a combustion liner (8-4-3) is arranged in the combustion chamber (8-4-1), a through hole for the combustion liner (8-4-3) to enter and exit is formed in the side wall of the combustion chamber (8-4-1), a lock (8-4-2) is arranged at the edge of the through hole, and an electric heating wire (8-4-4) is arranged in the combustion liner (8-4-3);
the ultrasonic water mist aerosol generating device (8-5) comprises a second shell (8-5-1), an air inlet and an air outlet are formed in the outer wall of the second shell (8-5-1), an ultrasonic atomizer (8-5-2) is arranged in the second shell (8-5-1), a charging groove (8-5-3) is formed in the ultrasonic atomizer (8-5-2), a charging pipeline (8-5-4) is arranged on the charging groove (8-5-3), one end of the charging pipeline (8-5-4) is communicated with the charging groove (8-5-3), and the other end of the charging pipeline (8-5-4) penetrates through the second shell (8-5-1);
the powder aerosol generating device (8-3) comprises a powder aerosol generating cavity (8-3-1) and a powder feeder (8-3-3), wherein the powder feeder (8-3-3) is arranged outside the powder aerosol generating cavity (8-3-1) and is communicated with the powder aerosol generating cavity (8-3-1) through a pipeline, an air outlet is formed in the top of the powder aerosol generating cavity (8-3-1), an air inlet is formed in the bottom of the powder aerosol generating cavity (8-3-1), a dust cover (8-3-4) is further arranged at the bottom of the powder aerosol generating cavity (8-3-1), the dust cover (8-3-4) covers the air inlet, a powder impactor (8-3-2) is arranged inside the powder aerosol generating cavity (8-3-1), the powder impactor (8-3-2) is communicated with the powder feeder (8-3-3) through a pipeline, an air inlet is formed in the top of the powder aerosol generating cavity (8-3-1) and is connected with an air diffuser (8-3-5) through a pipeline, and the air diffuser (8-3-5) is provided with an air through hole.
2. The atmospheric haze collecting, analyzing and releasing device according to claim 1, wherein the haze component aging device (8-2) comprises an aging cavity (8-2-1), an ultraviolet light source (8-2-2) is arranged on the inner surface of the top of the aging cavity (8-2-1), a circulating blower (8-2-3) is further arranged in the aging cavity (8-2-1), a mixed gas diffuser (8-2-4) is further arranged in the aging cavity (8-2-1), and the mixed gas diffuser (8-2-4) is respectively communicated with a combustion exhaust gas generating device (8-4), an ultrasonic water mist aerosol generating device (8-5) and a powder aerosol generating device (8-3) through pipelines, and the mixed gas diffuser (8-2-4) is a sphere with a hollow interior and a through hole on the surface.
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| WO2015139657A1 (en) * | 2014-03-20 | 2015-09-24 | 国家电网公司 | Illuminance test device |
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| WO2015139657A1 (en) * | 2014-03-20 | 2015-09-24 | 国家电网公司 | Illuminance test device |
| CN203862257U (en) * | 2014-04-10 | 2014-10-08 | 山西大学 | Haze simulation generating device |
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