CN113188852A - Sampling and measuring device for micro-nano aerosol in different environments - Google Patents
Sampling and measuring device for micro-nano aerosol in different environments Download PDFInfo
- Publication number
- CN113188852A CN113188852A CN202110468419.XA CN202110468419A CN113188852A CN 113188852 A CN113188852 A CN 113188852A CN 202110468419 A CN202110468419 A CN 202110468419A CN 113188852 A CN113188852 A CN 113188852A
- Authority
- CN
- China
- Prior art keywords
- aerosol
- sampling
- temperature
- pipeline
- filter membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000443 aerosol Substances 0.000 title claims abstract description 111
- 238000005070 sampling Methods 0.000 title claims abstract description 97
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 123
- 238000001704 evaporation Methods 0.000 claims abstract description 76
- 230000008020 evaporation Effects 0.000 claims abstract description 76
- 239000012528 membrane Substances 0.000 claims abstract description 66
- 238000009833 condensation Methods 0.000 claims abstract description 44
- 230000005494 condensation Effects 0.000 claims abstract description 43
- 238000001914 filtration Methods 0.000 claims abstract description 35
- 239000000835 fiber Substances 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 23
- 238000005485 electric heating Methods 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 238000009529 body temperature measurement Methods 0.000 claims description 13
- 230000001502 supplementing effect Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 16
- 238000013461 design Methods 0.000 description 14
- 238000003466 welding Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000002285 radioactive effect Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007791 dehumidification Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001089 thermophoresis Methods 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N2001/222—Other features
- G01N2001/2223—Other features aerosol sampling devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N2001/225—Sampling from a flowing stream of gas isokinetic, same flow rate for sample and bulk gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N2001/227—Sampling from a flowing stream of gas separating gas from solid, e.g. filter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a sampling and measuring device for micro-nano aerosol, which mainly comprises an aerosol sampling system, a high-temperature evaporation system, a low-temperature condensation system and a filtering and sampling system, wherein a metal fiber filter membrane is adopted as an aerosol sampling material in the system, and the phenomenon that the particle size of the aerosol is increased when n-butyl alcohol steam and water steam are condensed around the aerosol is utilized, so that the removal efficiency of the metal fiber filter membrane on the aerosol is improved, the capacity of completely capturing different particle size particles in incoming flow gas can be realized on the basis, the device can be suitable for monitoring environments under different pressure, temperature and humidity conditions, and the device can provide a measuring basis for aerosol analysis technologies under different environmental conditions in the fields of petroleum engineering, thermal energy engineering, iron smelting, automobiles and the like.
Description
Technical Field
The invention relates to a sampling and measuring device for micro-nano aerosol in different environments, which is mainly suitable for accurately measuring the mass concentration of micro-nano aerosol particles in different complex thermal environment conditions.
Background
With the world shortage of energy and the increasing problem of environmental pollution, new clean energy is gradually replacing the traditional energy, and nuclear energy is the energy with higher utilization degree. However, due to the existence of a certain danger coefficient, a nuclear power plant is provided with a plurality of safety barriers, the containment vessel of the nuclear power plant is the last barrier for preventing radioactive products from being released to the environment, when a serious accident occurs, the temperature and the pressure in the containment vessel can be gradually increased due to the generation of a large amount of water vapor, and a large-space environment with high temperature, high pressure, high humidity and strong radiation is finally formed, most of radioactive substances in the containment vessel exist in the form of aerosol, and in order to reasonably evaluate radioactive threats, the concentration of the aerosol in the containment vessel needs to be accurately predicted. Therefore, the research on the behavior of the radioactive source item of the containment vessel under the condition of a serious accident of a reactor is actively carried out in all countries in the world at present, a high-temperature, high-pressure and high-humidity environment similar to the actual condition needs to be constructed firstly in the research process, then the aerosol concentration under the complex thermal environment is measured on line by using a reliable measurement technology, the migration and sedimentation behaviors of the aerosol are further evaluated, and the key of the experiment is how to ensure that the aerosol concentration under the condition is accurately measured.
The existing accurate aerosol measurement method comprises online measurement equipment such as an optical particle counter, a condensation nuclear particle counter and the like and offline measurement equipment such as a filter membrane filter and the like, but because most of online measurement devices are limited in application range and cannot work in a high-temperature and high-pressure environment, the filter membrane filter is often used as sampling measurement equipment of the aerosol under nuclear facilities and high-temperature and high-pressure conditions. Aiming at the extreme dangerous environment such as high radioactivity, patent No. 200620113189.6 proposes an aerosol sampling and measuring device, which adopts aerosol filter paper to sample aerosol, adopts an automatic sample feeding mode to detect the radioactivity of the aerosol on the filter paper by a detector, and adopts an off-line working mode in the whole process; the stepping large-flow aerosol sampling device provided by the patent No. 201510941240.6 improves the sampling device on the basis of the above, and improves the range of working flow; the novel radioactive aerosol real-time sampling and measuring device and the measuring method thereof provided by the patent No. 201810477664.5 adopt the filter membrane as the aerosol sampling basis to provide an integrated real-time detecting device, so that the equipment safety is improved. The above designs are all based on radioactivity detection in conventional nuclear facilities, so no consideration is given to the operation under high temperature, high pressure and high humidity conditions. The patent No. 201620459699.2 provides a radioactive aerosol continuous monitoring device for preventing corrosion of acidic substances, which adds a dehumidifying device and a purging device on the basis of the sampling and measurement of the filter membrane, thereby reducing the damage of the sample gas to the equipment, but the addition of the dehumidifying device also causes certain aerosol loss and affects the measurement precision. Patent No. 201720618087.8 proposes an aerosol sampling system for high temperature and high pressure, which maintains the whole system under the condition of high temperature and high pressure, and adopts a filter membrane as an aerosol sampling device, and carries out temperature and pressure reduction treatment at the rear end of the system, thereby reducing the loss of aerosol. However, due to the different specifications of the filter membranes, the filter effects of the filter membranes for aerosols with different sizes are different, for example, the filter membranes designed for micron-sized aerosols have certain limitations on the filtering capability of the nanoscale aerosols, which may affect the measurement accuracy.
The invention provides a sampling and measuring device for micro-nano aerosol in different environments, which mainly comprises an aerosol sampling system, a high-temperature evaporation system, a low-temperature condensation system and a filtering and sampling system, wherein a metal fiber filter membrane is adopted as an aerosol sampling material in the system, and the phenomenon that the particle size of the aerosol is increased when n-butyl alcohol steam and water steam are condensed around the aerosol is utilized, so that the removal efficiency of the metal fiber filter membrane on the aerosol is improved, and the capacity of completely capturing different particle size particles in incoming flow gas can be realized on the basis.
Disclosure of Invention
The invention aims to design an efficient sampling and measuring device which meets complex thermal environment and aims at micro-nano aerosol, can be suitable for wider experimental conditions, and realizes the sampling and measuring functions of aerosol concentration in different fields and under different experimental working conditions.
The purpose of the invention is realized as follows: the system comprises an aerosol sampling system, a high-temperature evaporation system, a low-temperature condensation system and a filtering sampling system, wherein the systems are arranged in series, the aerosol sampling system is used for taking out sample gas in an environment to be tested, and the front end of the aerosol sampling system can realize constant-speed sampling of the gas by adopting a sampling pipe matched with a throttling orifice plate; the high-temperature evaporation system is arranged in parallel by adopting a heating and cooling system and is used for stably generating n-butyl alcohol steam in different environments; the low-temperature condensing system adopts a mode of matching an oil bath with a heat exchange coil to form a stable low-temperature environment; the filtration sampling system is used for filtering and collecting aerosol in sample gas.
The invention also includes such structural features:
1. the aerosol sampling system comprises an aerosol sampling pipeline, a high-temperature air pipeline, a first temperature sensor, a first electric heater, a first temperature measuring and electric heating controller, a first high-efficiency dehumidifying filter and a first thermal mass flowmeter, wherein the aerosol sampling pipeline is connected with the high-temperature air pipeline through a joint, a sample gas temperature measuring device is arranged on the side wall of the aerosol sampling pipeline, the first high-efficiency dehumidifying filter and the first thermal mass flowmeter are arranged at the inlet of the high-temperature air pipeline, the first electric heater adopts a spiral structure and is arranged on the outer wall surface of the high-temperature air pipeline, a base of the first temperature sensor in the first temperature measuring and electric heating controller is arranged on the outer wall surface of the high-temperature air pipeline, a measuring point is arranged in the central area of the air flow of the pipeline, the electric heating controller is directly connected with the electric heater through a control circuit, and constant temperature heating of the incoming air is realized through PID control.
2. The high-temperature evaporation system comprises an evaporation control box body, an evaporation flow channel, a water-cooling heat exchange tube I, an electric heater II, a temperature measurement and electric heating controller II and an n-butyl alcohol liquid supplementing box, wherein the evaporation flow channel is connected with the end part of the aerosol sampling pipeline and is welded on the wall surface of the evaporation control box body; the water-cooling heat exchange tube I is connected with the evaporation control box body and is integrally submerged in n-butyl alcohol of the evaporation control box body, a cooling water inlet and a cooling water outlet are arranged on the wall surface of the evaporation control box body, the electric heaters II are two groups of electric heaters arranged on the side wall of the evaporation control box body, a temperature sensor base in the temperature measurement and electric heating controller II is arranged on the upper wall surface of the evaporation control box body, and measuring points of the temperature measurement and electric heating controller II are arranged in a liquid phase around an evaporation flow channel; the evaporation control box body is internally filled with n-butanol solution and is communicated with a n-butanol solution supplementing box welded and fixed on the side surface of the evaporation control box body through a side wall opening.
3. The low-temperature condensation system comprises a condensation control box body, a temperature sensor II, a water-cooling heat exchange tube II and an air inlet pipeline, wherein oil submerging the air inlet pipeline is filled in the condensation control box body; the water-cooling heat exchange tube II is connected with the condensation control box body and is fixed in position, the water-cooling heat exchange tube II is wholly submerged in oil of the condensation control box body, a cooling water inlet and a cooling water outlet are respectively arranged on the left side and the right side wall surface of the condensation control box body, the air inlet pipeline is connected with the end part of the evaporation flow channel, and the end part of the air inlet pipeline is connected with an air inlet of the filtering and sampling system.
4. The filtering and sampling system comprises a seal box, a filter membrane support, a seal bolt, an exhaust pipeline, a filtering dryer and a second thermal mass flowmeter, wherein the seal box adopts a drawer type structure, an air inlet connected with an air inlet pipeline is formed in the upper wall surface of the seal box, a tapered circulation structure which is gradually expanded is designed on the upper wall surface of the seal box, and the bottom surface of the lower part of the seal box is connected with an outlet pipeline in a tapered mode; the opening of the side wall of the sealing box is provided with a bolt hole matched with the sealing bolt; the filter membrane holds in the palm including outside and seal box wall complex sealed head, place the tray in the inside filter membrane of seal box, it has the bolt to advance the hole to open on the head, with the bolt hole cooperation on the seal box, the filter membrane is placed and is provided with the region of placing of circular shape metal fiber filter membrane on the tray, evenly trompil in its lower part.
Compared with the prior art, the invention has the beneficial effects that: the experimental device adopts an integrated arrangement mode, has simple structure, complete functions and convenient operation; the experimental device can realize the function of sampling and measuring the aerosol under different temperature, pressure and humidity conditions; the functional design of n-butyl alcohol evaporation and re-condensation in the experimental device improves the capture and measurement precision of the micro-nano aerosol; the experimental device is simple in structure arrangement, and various temperature control arrangements are adopted, so that the loss of aerosol in the system is reduced; the design of drawer type filter membrane support structure in the experimental device reduces the time of experimental preparation and improves the working efficiency.
Drawings
Fig. 1 is a front view of the overall structure of an aerosol measurement system.
Fig. 2 is a top view of the overall structure of the aerosol measurement system.
Fig. 3 is a left side view of the overall structure of the aerosol measurement system.
FIG. 4 is a diagram showing a structure of a filter holder.
FIG. 5 is an assembly view of the filter membrane.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The high-efficiency sampling and measuring device mainly comprises an aerosol sampling system, a high-temperature evaporation system, a low-temperature condensation system and a filtering and sampling system. The aerosol sampling system is used for taking representative sample gas in an environment to be tested, and constant-speed sampling of the gas can be realized by additionally installing an L-shaped sampling tube at the front end of the aerosol sampling system in combination with a throttling orifice plate according to different sampling environments; the high-temperature evaporation system adopts a design that heating and cooling systems are used in parallel and is used for stably generating n-butyl alcohol steam in different environments; the low-temperature condensing system adopts a mode of matching an oil bath with a heat exchange coil and is used for forming a stable low-temperature environment; the filtration sampling system is used for filtering and collecting aerosol in sample gas. When the aerosol with increased particle size flows through a fiber filter membrane in a filtering and sampling system in the operation of the system, the aerosol is retained on the surface of the fiber with the retention efficiency close to 100 percent, and finally the filter membrane is dried, weighed and the like to obtain the mass concentration of the aerosol.
The aerosol sampling system comprises an aerosol sampling pipeline 1.11, a high-temperature air pipeline 1.12, a temperature sensor I1.13, an electric heater I1.14, a temperature measurement and electric heating controller I1.15, a high-efficiency dehumidification filter 1.16 and a thermal mass flowmeter I1.17. Aerosol sampling pipe 1.11 direct mount is in the environment that awaits measuring, if there is gaseous flow, then sets up the L type sampling tube towards the incoming flow gas direction in addition at aerosol sampling pipe front end and samples, if in high-pressure environment then install orifice plate in addition at its front end, reduces incoming flow gas pressure and controls gas flow simultaneously through the mode that increases local resistance. The orifice plate adopts a tapered and gradually-expanded double-cone structure design, the size of a minimum round hole is designed according to sampling flow and pressure drop requirements, the gas pressure passing through the orifice plate is reduced to normal pressure in an experiment, the gas flow rate entering the sampling pipe is equal to the flow rate in an environment to be measured, and the principle of aerosol constant-speed sampling is met. The conical structural design of the orifice plate ensures that the flow area and the geometric shape of the flow passage are uniformly changed, so that the loss of aerosol in the flow passage is reduced to the minimum.
The high-temperature air pipeline 1.12 is arranged on the side wall of the aerosol sampling pipeline 1.11, and a high-efficiency dehumidifying filter 1.16, a thermal mass flow meter I1.17, an electric heater I1.14 and a temperature measuring and electric heating controller I1.15 are sequentially arranged in front of the pipeline. The high-efficiency dehumidifying filter 1.16 is installed at the inlet of the high-temperature air pipeline 1.12, and zeolite and metal fiber materials are installed in the high-efficiency dehumidifying filter for removing water vapor and particle impurities in the incoming air and ensuring the purity of the incoming air. The first thermal mass flowmeter 1.17 is arranged behind the high-efficiency dehumidification filter device 1.16 and is used for measuring the flow of the dry air after high-efficiency dehumidification. The electric heater I1.14 and the temperature measuring and electric heating controller I1.15 which are arranged on the side wall of the high-temperature air pipeline 1.12 control the power of the electric heating device in a PID control mode to ensure that the temperature of the heated mixed gas is consistent with that of the sample gas. The whole function that sets up above is for reducing the steam partial pressure in the sample gas, prevents that steam from condensing in follow-up system, plays the effect of dehumidifying, flow detection and temperature control to the mist simultaneously to avoid in the gas mixing process because thermophoresis, diffusion swimming that difference in temperature, steam condensation produced and then cause a large amount of aerosol losses.
The high-temperature evaporation system consists of an evaporation control box body 1.21, an evaporation flow channel 1.22, a water-cooling heat exchange tube I1.23, an electric heater II 1.26, a temperature measurement and electric heating controller II 1.27 and an n-butyl alcohol liquid supplementing box 1.28. The evaporation control cabinet 1.21 is the outer boundary of the whole system, inside which a certain height of n-butanol solution is placed to produce n-butanol vapor. The second electric heater 1.26 is arranged at the lower part of the evaporation control box body 1.21, the design of two groups of variable power heating rods and PID control are adopted, the power of the heating rods can be controlled according to temperature feedback signals, the placed position can ensure that the solution temperature distribution is uniform when the heating device works according to the phenomenon that hot fluid moves upwards, and the generation of the temperature stratification phenomenon is avoided. The first water-cooling heat exchange tube 1.23 is connected with the evaporation control box body 1.21, the whole evaporation control box body 1.21 is submerged in n-butyl alcohol, the heat exchange efficiency between cooling water and the n-butyl alcohol can be increased by adopting the structural design of a spiral tube, and the temperature of the box body is rapidly reduced. The evaporation flow channel 1.22 is arranged behind the aerosol sampling pipeline 1.11, and the cylindrical structure design is adopted, so that the size of the flow channel is consistent with that of the air inlet pipe, and the aerosol loss caused by the change of the geometric size is reduced. The flow channel is designed by adopting a pipe wall made of a porous medium material, wherein a quarter area of the lower half part of the flow channel is immersed in a n-butyl alcohol solution, the n-butyl alcohol can be immersed in the porous medium through the capillary action and is filled in the wall surface of the whole flow channel, the n-butyl alcohol is ensured to be uniformly evaporated on the inner wall surface, and the design can avoid the local aerosol loss caused by the uneven thermophoresis and diffusion electrophoresis effect generated by local evaporation. Meanwhile, a metal outer layer is arranged on the outer wall surface of the upper non-immersed area, so that the leakage of inflow gas from an upper gap can be prevented, and the uniform temperature distribution is ensured.
When the equipment runs, if high-temperature gas passes through, the n-butanol is evaporated and carried away by utilizing gas heat dissipation, if low-temperature gas passes through, the temperature of the n-butanol is controlled by the second electric heater 1.26 to generate n-butanol steam, and after the n-butanol in the porous medium is evaporated, external liquid can be pushed by pressure to continue to enter the porous medium area. The first water-cooling heat exchange pipe 1.23 is matched with the second electric heater 1.26 to be used under the low-temperature and low-humidity sampling environment condition so as to control the temperature in the evaporation control box body and further control the speed of generating n-butyl alcohol steam, and the first water-cooling heat exchange pipe can also be matched with the second temperature measurement and electric heating controller 1.27 to be used under the high-temperature and high-humidity sampling environment condition so as to prevent a large amount of n-butyl alcohol from being evaporated due to overhigh temperature of sample gas. The n-butyl alcohol liquid supplementing box 1.28 is installed on the side face of the evaporation control box body 1.21, the liquid level in the evaporation control box body 1.11 can not be directly monitored during the operation of equipment, the liquid level of the n-butyl alcohol liquid supplementing box 1.28 can be monitored to ensure that the n-butyl alcohol liquid level cannot fall to the lower part of an evaporation flow channel 1.22 in the using process, and the n-butyl alcohol liquid supplementing box 1.28 can be used for supplementing the liquid level when the liquid level is reduced.
The low-temperature condensation system is composed of a condensation control box body 1.31, a second temperature sensor 1.32 and a second water-cooling heat exchange tube 1.35. The condensation control box body 1.31 is the outer boundary of the whole system, a certain amount of oil is placed inside the condensation control box body to be used as a carrier for temperature control, and temperature fluctuation can be reduced due to the large specific heat capacity of the condensation control box body. Air inlet pipe 1.36 installs behind evaporation runner 1.22, carries the mist of n-butanol steam to get into microthermal air inlet pipe 1.36 after, and the n-butanol steam uses aerosol to constantly condense at the aerosol surface as the condensation nucleus and increases the aerosol diameter, and its gravitational effect can increase simultaneously, so in this pipeline vertical placement condensation control box 1.31, ensure that all particles can get into filtration sampling system under the effect of gravity and inertia. The water-cooling heat exchange tube II 1.35 adopts a spiral tube structure, is arranged in the condensation control box body 1.31 in a design with the same height as the condensation control box body, and is wholly submerged in the oil of the condensation control box body 1.31. The structural design of the spiral pipe can increase the heat exchange efficiency and realize the function of quickly controlling the temperature of the box body. And the measuring point of the second temperature sensor 1.32 is arranged in the oil, and the flow speed of the cooling water in the water-cooling heat exchange pipe 1.35 is controlled according to temperature feedback during the operation of the system, so that the temperature stability of a cold source is ensured.
The filtration sampling system comprises a seal box 1.41, a filter membrane support 1.42, a seal bolt 1.43, an exhaust pipeline 1.44, a filtration dryer 1.45 and a thermal mass flowmeter II 1.46. The seal box 1.41 mainly adopts a drawer type structure, a filter membrane support and metal fibers are placed in the middle, the upper wall surface of the seal box is connected with an air inlet pipeline, a gradually-expanding conical circulation structure is designed in the middle, incoming flow gas is guaranteed to uniformly pass through the fiber filter membrane in a laminar flow mode, and aerosol is prevented from puncturing the metal fibers. The filter membrane holds in the palm 1.42 adoption plug-type structural design, conveniently changes the filter membrane, can reduce experiment preparation time, and what set up on the tray was placed to the filter membrane has circular fibrous filter membrane to place the region, and this region is evenly opened has the round hole to guarantee that the air current uniform flow around the fibre avoids producing the fibrous phenomenon of aerosol puncture.
The metal fiber is selected as the filtering material, which has the advantages of large dust holding capacity, corrosion resistance and suitability for the condition of special gas in the environment. The mechanism of filtering and collecting the aerosol by the fibers and the filter membrane is parameters such as Brownian diffusion, gravity settling, direct interception, inertia effect and the like, the specific filtering efficiency can be generally considered by adopting a formula (1), the most easily-penetrable region of the fibers and the filter membrane for the aerosol is about 100-200 nm, and the collecting efficiency for the micron-sized aerosol is about 100%, so that the evaporation rate of the n-butanol is controlled according to the actual sampling environment to control the size of the aerosol when the n-butanol is collected by the metal fibers.
η＝ηD+ηG+ηDI+ηI (1)
ηI＝0.0334St3/2 (5)
In the formula (I), the compound is shown in the specification,
Knc＝2λ/dc
wherein epsilon is porosity; dpIs the particle diameter, m; rho is the particle density, kg/m3(ii) a Mu is viscosity, kg/ms; u is the apparent gas velocity, m/s; dcIs the fiber diameter, m;
the finally installed filter dryer 1.45 plays a role in drying and removing harmful gas in an experiment, and normal work of the second thermal mass flow meter 1.46 is guaranteed. The flow of the non-condensable gas obtained by measurement needs to be matched with the measurement result of a thermal mass flow meter in an aerosol sampling system, the flow of the non-condensable gas in the actual sample gas is obtained, meanwhile, the water vapor partial pressure and the mass fraction in the mixed gas are obtained according to the actually measured temperature and pressure of the environment to be measured, and finally, the total mass flow of the sample gas is obtained by calculation and can be used for assisting in calculation of the aerosol concentration. After sampling is finished, n-butanol on the fibers is evaporated at high temperature, then the mass change of the filter membrane can be measured by using a micro precision electronic balance to obtain the mass of aerosol particles in sample gas, and the mass concentration of the aerosol is obtained by combining the gas flow measured by a flowmeter.
Fig. 1, 2 and 3 show the front view, the top view and the left view of the overall structure of the aerosol measurement system. The diagram shows that the aerosol sampling system mainly comprises an aerosol sampling pipeline 1.11, a high-temperature air pipeline 1.12, a temperature sensor I1.13, an electric heater I1.14, a temperature measuring and electric heating controller I1.15, a high-efficiency dehumidifying filter 1.16 and a thermal mass flowmeter I1.17, wherein the aerosol sampling pipeline 1.11 and the high-temperature air pipeline 1.12 are connected through a stainless steel tee joint so as to reduce aerosol loss caused by welding. The first temperature sensor 1.13 is welded on the side wall of the aerosol sampling pipeline 1.11 by a base welding mode, and a measuring point of the temperature measuring device is arranged in the central area of the pipeline airflow. The high-efficiency dehumidifying filter 1.16 and the first thermal mass flowmeter 1.17 are installed at an inlet of the high-temperature air pipeline 1.12 in a stainless steel clamping and sleeving mode to remove water vapor and impurities in incoming flow gas and monitor flow. The electric heater I1.14 is of a spiral structure and is welded on the outer wall surface of the high-temperature air pipeline 1.12, the temperature sensor in the temperature measurement and electric heating controller I1.15 is also welded on the outer wall surface of the high-temperature air pipeline 1.12 in a base welding mode, the measuring point is arranged in the air flow central area of the pipeline, the electric heating controller is directly connected with the electric heater I1.14 through a control circuit, and the constant-temperature heating of the incoming air is realized through PID control.
The high-temperature evaporation system consists of an evaporation control box body 1.21, an evaporation flow channel 1.22, a water-cooling heat exchange tube I1.23, an electric heater II 1.26, a temperature measurement and electric heating controller II 1.27 and an n-butyl alcohol liquid supplementing box 1.28. The evaporation control box body 1.21 is the outer boundary of the whole high-temperature evaporation system, the wall surface thickness of the evaporation control box body is a stainless steel plate with the thickness of 5mm, heat leakage can be reduced, and meanwhile, heat insulation materials are arranged outside the evaporation control box body. The evaporation flow channel 1.22 is directly connected with the aerosol sampling pipeline 1.11 in a welding mode, and is welded on the wall surface of the evaporation control box body 1.21 at the same time to be fixed in position, the pipe wall of the evaporation flow channel adopts a porous medium form, the lower part of the evaporation flow channel is immersed in the n-butyl alcohol solution at the same time to ensure that the n-butyl alcohol solution is filled in gaps of the porous medium, and the outer wall surface of the upper part of the evaporation flow channel is provided with a metal outer layer to ensure that the inflow gas cannot leak from the gaps. The first water-cooling heat exchange tube 1.23 is connected with the evaporation control box body 1.21 in a welding mode and is fixed in position, the whole evaporation control box body is submerged in n-butyl alcohol of the evaporation control box body 1.21, the wall surface of the evaporation control box body 1.21 is provided with cooling water inlets and outlets 1.25 and 1.24, and the heat exchange efficiency between the cooling water and the n-butyl alcohol can be improved in a spiral tube mode. The second electric heater 1.26 mainly comprises two groups of electric heaters, is connected with the side wall of the evaporation control box body 1.11 in a welding mode to form a fixed position, and is arranged at the lower side of the constant temperature control box body 1.11. The temperature sensor in the second temperature measurement and electric heating controller 1.27 is directly installed on the upper wall surface of the evaporation control box body in a base welding mode, and measuring points of the temperature sensor are arranged in the liquid phase around the evaporation flow channel 1.22 so as to guarantee the accuracy of temperature measurement. The evaporation control box body 1.21 is internally filled with n-butyl alcohol solution with a certain height, and is communicated with the n-butyl alcohol solution supplementing box 1.28 welded and fixed on the side surface of the evaporation control box body through a side wall opening, so that the liquid level in the box body is monitored by using the liquid level of the n-butyl alcohol solution supplementing box 1.28, and the n-butyl alcohol solution is supplemented by using the solution supplementing box, and the liquid level just submerges the lower part of the evaporation flow channel 1.22.
The low-temperature condensation system consists of a condensation control box body 1.31, a second temperature sensor 1.32, a second water-cooling heat exchange pipe 1.35 and an air inlet pipeline 1.36. The condensation control box 1.31 is the outer boundary of the low temperature condensation system and is filled with oil with a certain height to ensure that the gas inlet pipeline 1.36 is submerged. The second temperature sensor 1.32 is directly installed on the upper wall surface of the condensation control box body 1.31 in a base welding mode, and measuring points of the second temperature sensor are arranged in a liquid phase around a pipeline, so that the accuracy of temperature measurement is guaranteed. The water-cooling heat exchange tube II 1.35 is connected with the condensation control box body 1.31 in a welding mode and is fixed in position, the whole body of the water-cooling heat exchange tube II is submerged in oil of the condensation control box body 1.31, and a cooling water inlet 1.34 and a cooling water outlet 1.33 are respectively arranged on the left side wall surface and the right side wall surface of the condensation control box body 1.31. The inlet pipe 1.36 is installed behind the evaporation flow channel 1.22 by welding, and the outlet of the pipe is connected with the inlet of the filtration sampling system.
The filtering and sampling system consists of a sealing box 1.41, a filter membrane holder 1.42, a sealing bolt 1.43, an exhaust pipeline 1.44, a filtering dryer 1.45 and a second thermal mass flowmeter 1.46. FIG. 4 is a view showing a filter holder structure, and FIG. 5 is an assembly view of a filter. As can be seen from the figure, the sealing box 1.41 mainly adopts a drawer type structure, the middle of the structure is hollow, the side wall of the structure is provided with an opening, and a push-pull type structure is adopted for placing the filter membrane support. The upper wall surface of the filter is connected with an air inlet pipeline, and a gradually-expanding conical circulation structure is designed to ensure that incoming air is uniformly dispersed and enters the fiber filter membrane, and the lower bottom surface of the filter is connected with an outlet pipeline in a conical gradually-reducing mode. The side wall opening of the sealing bolt is provided with a bolt hole matched with the sealing bolt 1.43. The filter membrane support 1.42 comprises a sealing end socket matched with the wall surface of the sealing box on the outer side and a filter membrane placing tray placed inside the sealing box. The seal head is provided with bolt inlet holes which are matched with bolt holes on the seal box, the seal box and the seal box are fixed in a sealing way through seal bolts 1.43, meanwhile, a circular metal fiber filter membrane placing area is arranged on the filter membrane placing tray, and holes are uniformly formed in the lower part of the filter membrane placing tray to ensure uniform air outlet. The sealing bolt 1.43 is mainly matched with a bolt hole on the side wall of the sealing box through an inlet hole on the outer sealing head of the filter membrane support, and the sealing box 1.41 and the filter membrane support 1.42 are sealed and fixed. During the operation of the device, a fiber filter membrane is placed on the filter membrane support 1.42, then the filter membrane support is pushed into the seal box 1.41, finally the seal bolt 1.43 is screwed into the bolt hole on the side wall of the seal box 1.41 to fix the filter membrane support, and after the measurement of the current working condition is finished, the filter membrane is replaced to measure the next group of samples. The filter drier 1.45 and the thermal type mass flow rate meter 1.46 are arranged on the exhaust pipeline 1.44 through a cutting sleeve, and the filter drier 1.45 is filled with substances such as zeolite, active carbon and the like.
Claims (9)
1. A sampling measuring device aiming at micro-nano aerosol in different environments is characterized in that: the system comprises an aerosol sampling system, a high-temperature evaporation system, a low-temperature condensation system and a filtering sampling system, wherein the systems are arranged in series, the aerosol sampling system is used for taking out sample gas in an environment to be tested, and the constant-speed sampling of the gas is realized by adopting a mode that a sampling pipe is matched with a throttling orifice plate; the high-temperature evaporation system is arranged in parallel by adopting a heating and cooling system and is used for stably generating n-butyl alcohol steam in different environments; the low-temperature condensing system adopts a mode of matching an oil bath with a heat exchange coil to form a stable low-temperature environment; the filtration sampling system is used for filtering and collecting aerosol in sample gas.
2. A sampling and measuring device for micro-nano aerosol in different environments according to claim 1, wherein: the aerosol sampling system comprises an aerosol sampling pipeline, a high-temperature air pipeline, a first temperature sensor, a first electric heater, a first temperature measuring and electric heating controller, a high-efficiency dehumidifying filter and a thermal mass flowmeter, the aerosol sampling pipeline is connected with the high-temperature air pipeline through a joint, the first temperature sensor is arranged on the side wall of the aerosol sampling pipeline, the high-efficiency dehumidifying filter and the thermal mass flowmeter are arranged at an inlet of the high-temperature air pipeline, the first electric heater is of a spiral structure and is arranged on the outer wall surface of the high-temperature air pipeline, the temperature sensor in the first temperature measuring and electric heating controller is arranged on the outer wall surface of the high-temperature air pipeline, a measuring point is arranged in the air flow central area of the pipeline, the electric heating controller is directly connected with the electric heater through a control circuit, and constant-temperature heating of incoming air is achieved through PID control.
3. A sampling and measuring device for micro-nano aerosol in different environments according to claim 1 or 2, characterized in that: the high-temperature evaporation system comprises an evaporation control box body, an evaporation flow channel, a water-cooling heat exchange tube I, an electric heater II, a temperature measurement and electric heating controller II and an n-butyl alcohol liquid supplementing box, wherein the evaporation flow channel is connected with the end part of the aerosol sampling pipeline and is welded on the wall surface of the evaporation control box body; the water-cooling heat exchange tube II is connected with the evaporation control box body and is integrally submerged in n-butyl alcohol of the evaporation control box body, a cooling water inlet and a cooling water outlet are arranged on the wall surface of the evaporation control box body, the electric heaters II are two groups of electric heaters arranged on the side wall of the evaporation control box body, a temperature sensor in the temperature measurement and electric heating controller II is arranged on the upper wall surface of the evaporation control box body, and measuring points of the temperature sensor are arranged in a liquid phase around an evaporation flow channel; the evaporation control box body is internally filled with n-butanol solution and is communicated with a n-butanol solution supplementing box welded and fixed on the side surface of the evaporation control box body through a side wall opening.
4. A sampling and measuring device for micro-nano aerosol in different environments according to claim 1 or 2, characterized in that: the low-temperature condensation system comprises a condensation control box body, a temperature sensor II, a water-cooling heat exchange tube II and an air inlet pipeline, wherein oil submerging the air inlet pipeline is filled in the condensation control box body; the water-cooling heat exchange tube II is connected with the condensation control box body and is fixed in position, the water-cooling heat exchange tube is integrally submerged in oil of the condensation control box body, a cooling water inlet and a cooling water outlet are respectively arranged on the left side and the right side wall surface of the condensation control box body, the air inlet pipeline is connected with the end portion of the evaporation runner, and the end portion of the air inlet pipeline is connected with an air inlet of the filtering and sampling system.
5. A sampling and measuring device for micro-nano aerosol in different environments according to claim 3, wherein: the low-temperature condensation system comprises a condensation control box body, a temperature sensor II, a water-cooling heat exchange tube II and an air inlet pipeline, wherein oil submerging the air inlet pipeline is filled in the condensation control box body; the water-cooling heat exchange tube II is connected with the condensation control box body and is fixed in position, the water-cooling heat exchange tube is integrally submerged in oil of the condensation control box body, a cooling water inlet and a cooling water outlet are respectively arranged on the left side and the right side wall surface of the condensation control box body, the air inlet pipeline is connected with the end portion of the evaporation runner, and the end portion of the air inlet pipeline is connected with an air inlet of the filtering and sampling system.
6. A sampling and measuring device for micro-nano aerosol in different environments according to claim 1 or 2, characterized in that: the filtering and sampling system comprises a seal box, a filter membrane support, a seal bolt, an exhaust pipeline, a filtering dryer and a thermal mass flowmeter, wherein the seal box adopts a drawer type structure, an air inlet connected with an air inlet pipeline is formed in the upper wall surface of the seal box, a tapered circulation structure which is gradually expanded is designed on the upper wall surface of the seal box, and the bottom surface of the lower part of the seal box is connected with an outlet pipeline in a tapered mode; the opening of the side wall of the sealing box is provided with a bolt hole matched with the sealing bolt; the filter membrane holds in the palm including outside and seal box wall complex sealed head, place the tray in the inside filter membrane of seal box, it has the bolt to advance the hole to open on the head, with the bolt hole cooperation on the seal box, the filter membrane is placed and is provided with the region of placing of circular shape metal fiber filter membrane on the tray, evenly trompil in its lower part.
7. A sampling and measuring device for micro-nano aerosol in different environments according to claim 3, wherein: the filtering and sampling system comprises a seal box, a filter membrane support, a seal bolt, an exhaust pipeline, a filtering dryer and a thermal mass flowmeter, wherein the seal box adopts a drawer type structure, an air inlet connected with an air inlet pipeline is formed in the upper wall surface of the seal box, a tapered circulation structure which is gradually expanded is designed on the upper wall surface of the seal box, and the bottom surface of the lower part of the seal box is connected with an outlet pipeline in a tapered mode; the opening of the side wall of the sealing box is provided with a bolt hole matched with the sealing bolt; the filter membrane holds in the palm including outside and seal box wall complex sealed head, place the tray in the inside filter membrane of seal box, it has the bolt to advance the hole to open on the head, with the bolt hole cooperation on the seal box, the filter membrane is placed and is provided with the region of placing of circular shape metal fiber filter membrane on the tray, evenly trompil in its lower part.
8. A sampling and measuring device for micro-nano aerosol in different environments according to claim 4, characterized in that: the filtering and sampling system comprises a seal box, a filter membrane support, a seal bolt, an exhaust pipeline, a filtering dryer and a thermal mass flowmeter, wherein the seal box adopts a drawer type structure, an air inlet connected with an air inlet pipeline is formed in the upper wall surface of the seal box, a tapered circulation structure which is gradually expanded is designed on the upper wall surface of the seal box, and the bottom surface of the lower part of the seal box is connected with an outlet pipeline in a tapered mode; the opening of the side wall of the sealing box is provided with a bolt hole matched with the sealing bolt; the filter membrane holds in the palm including outside and seal box wall complex sealed head, place the tray in the inside filter membrane of seal box, it has the bolt to advance the hole to open on the head, with the bolt hole cooperation on the seal box, the filter membrane is placed and is provided with the region of placing of circular shape metal fiber filter membrane on the tray, evenly trompil in its lower part.
9. A sampling and measuring device for micro-nano aerosol in different environments according to claim 5, characterized in that: the filtering and sampling system comprises a seal box, a filter membrane support, a seal bolt, an exhaust pipeline, a filtering dryer and a thermal mass flowmeter, wherein the seal box adopts a drawer type structure, an air inlet connected with an air inlet pipeline is formed in the upper wall surface of the seal box, a tapered circulation structure which is gradually expanded is designed on the upper wall surface of the seal box, and the bottom surface of the lower part of the seal box is connected with an outlet pipeline in a tapered mode; the opening of the side wall of the sealing box is provided with a bolt hole matched with the sealing bolt; the filter membrane holds in the palm including outside and seal box wall complex sealed head, place the tray in the inside filter membrane of seal box, it has the bolt to advance the hole to open on the head, with the bolt hole cooperation on the seal box, the filter membrane is placed and is provided with the region of placing of circular shape metal fiber filter membrane on the tray, evenly trompil in its lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468419.XA CN113188852A (en) | 2021-04-28 | 2021-04-28 | Sampling and measuring device for micro-nano aerosol in different environments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468419.XA CN113188852A (en) | 2021-04-28 | 2021-04-28 | Sampling and measuring device for micro-nano aerosol in different environments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113188852A true CN113188852A (en) | 2021-07-30 |
Family
ID=76980027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110468419.XA Pending CN113188852A (en) | 2021-04-28 | 2021-04-28 | Sampling and measuring device for micro-nano aerosol in different environments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113188852A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383918A (en) * | 2022-01-11 | 2022-04-22 | 长安大学 | ENM aerosol diffusion drying system |
| CN114441269A (en) * | 2022-02-14 | 2022-05-06 | 华北电力大学（保定） | Component and quantity detection device for atmospheric aerosol |
| CN115032124A (en) * | 2022-03-21 | 2022-09-09 | 哈尔滨工程大学 | Experimental device for studying retention characteristics of aerosol in single-size steam bubble under high-temperature and high-pressure conditions |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790650A (en) * | 1987-04-17 | 1988-12-13 | Tsi Incorporated | Condensation nucleus counter |
| US20060146327A1 (en) * | 2004-12-30 | 2006-07-06 | Jian Wang | Aerosol mobility size spectrometer |
| CN103487494A (en) * | 2013-09-11 | 2014-01-01 | 西北核技术研究所 | Environmental aerosol direct sampling gathering sample injecting device and quantitative analysis method |
| CN104297118A (en) * | 2014-10-25 | 2015-01-21 | 中国科学院合肥物质科学研究院 | Number concentration measurement device of atmospheric ultrafine particles |
| CN204509752U (en) * | 2015-01-26 | 2015-07-29 | 安阳市华港制衣有限公司 | A kind of novel textile dyeing machinery is dyed cloth water heat-exchanger rig |
| CN104826561A (en) * | 2015-04-03 | 2015-08-12 | 清华大学 | Two-stage evaporation and condensation type quasi-monodisperse aerosol generating apparatus |
| CN106568101A (en) * | 2016-10-26 | 2017-04-19 | 西北工业大学 | Supercritical fuel oil heating device in supercritical oil bath type |
| CN106680057A (en) * | 2016-12-27 | 2017-05-17 | 中国科学院合肥物质科学研究院 | Nano-level particulate matter supersaturated growth device and control method |
| US20170268964A1 (en) * | 2016-02-29 | 2017-09-21 | Fnc Technology Co., Ltd. | Aerosol sampling system operating at high temperature and pressure |
| CN207181111U (en) * | 2017-05-31 | 2018-04-03 | 未来与挑战株式会社 | HTHP aerosol sampling system |
| CN109323976A (en) * | 2018-11-07 | 2019-02-12 | 中国科学院合肥物质科学研究院 | A kind of condensation particle counter temperature control device |
| CN109855925A (en) * | 2019-03-04 | 2019-06-07 | 上海交通大学 | The high vapour concentration aerosol on-line measurement device of the high temperature and pressure of bandgap calibration function |
| WO2019234688A2 (en) * | 2018-06-07 | 2019-12-12 | Sensors, Inc. | Particle concentration analyzing system and method |
| CN209878413U (en) * | 2019-02-19 | 2019-12-31 | 青岛普仁仪器有限公司 | Atmospheric aerosol on-line trapping and chemical component detection device |
| CN110797128A (en) * | 2019-11-15 | 2020-02-14 | 中国原子能科学研究院 | Test system for measuring aerosol concentration and behavior under test condition |
| CN110927047A (en) * | 2019-09-27 | 2020-03-27 | 清华大学 | Double-stage refrigeration particle condensation growth counter |
| US20200393410A1 (en) * | 2019-06-17 | 2020-12-17 | Waters Technologies Corporation | Techniques for mass analysis of aerosol particles |
-
2021
- 2021-04-28 CN CN202110468419.XA patent/CN113188852A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790650A (en) * | 1987-04-17 | 1988-12-13 | Tsi Incorporated | Condensation nucleus counter |
| US20060146327A1 (en) * | 2004-12-30 | 2006-07-06 | Jian Wang | Aerosol mobility size spectrometer |
| CN103487494A (en) * | 2013-09-11 | 2014-01-01 | 西北核技术研究所 | Environmental aerosol direct sampling gathering sample injecting device and quantitative analysis method |
| CN104297118A (en) * | 2014-10-25 | 2015-01-21 | 中国科学院合肥物质科学研究院 | Number concentration measurement device of atmospheric ultrafine particles |
| CN204509752U (en) * | 2015-01-26 | 2015-07-29 | 安阳市华港制衣有限公司 | A kind of novel textile dyeing machinery is dyed cloth water heat-exchanger rig |
| CN104826561A (en) * | 2015-04-03 | 2015-08-12 | 清华大学 | Two-stage evaporation and condensation type quasi-monodisperse aerosol generating apparatus |
| US20170268964A1 (en) * | 2016-02-29 | 2017-09-21 | Fnc Technology Co., Ltd. | Aerosol sampling system operating at high temperature and pressure |
| CN106568101A (en) * | 2016-10-26 | 2017-04-19 | 西北工业大学 | Supercritical fuel oil heating device in supercritical oil bath type |
| CN106680057A (en) * | 2016-12-27 | 2017-05-17 | 中国科学院合肥物质科学研究院 | Nano-level particulate matter supersaturated growth device and control method |
| CN207181111U (en) * | 2017-05-31 | 2018-04-03 | 未来与挑战株式会社 | HTHP aerosol sampling system |
| WO2019234688A2 (en) * | 2018-06-07 | 2019-12-12 | Sensors, Inc. | Particle concentration analyzing system and method |
| CN109323976A (en) * | 2018-11-07 | 2019-02-12 | 中国科学院合肥物质科学研究院 | A kind of condensation particle counter temperature control device |
| CN209878413U (en) * | 2019-02-19 | 2019-12-31 | 青岛普仁仪器有限公司 | Atmospheric aerosol on-line trapping and chemical component detection device |
| CN109855925A (en) * | 2019-03-04 | 2019-06-07 | 上海交通大学 | The high vapour concentration aerosol on-line measurement device of the high temperature and pressure of bandgap calibration function |
| US20200393410A1 (en) * | 2019-06-17 | 2020-12-17 | Waters Technologies Corporation | Techniques for mass analysis of aerosol particles |
| CN110927047A (en) * | 2019-09-27 | 2020-03-27 | 清华大学 | Double-stage refrigeration particle condensation growth counter |
| CN110797128A (en) * | 2019-11-15 | 2020-02-14 | 中国原子能科学研究院 | Test system for measuring aerosol concentration and behavior under test condition |
Non-Patent Citations (3)
| Title |
|---|
| 周绍绳 等: "《精细化工生产入门》", 30 September 1993, 湖南科学技术出版社 * |
| 张娜娜 等: ""气溶胶取样测试技术研究与实验验证"", 《应用科技》 * |
| 张江石 等: "《粉尘防治理论与方法》", 31 March 2018, 煤炭工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383918A (en) * | 2022-01-11 | 2022-04-22 | 长安大学 | ENM aerosol diffusion drying system |
| CN114383918B (en) * | 2022-01-11 | 2023-06-23 | 长安大学 | ENM aerosol diffusion drying system |
| CN114441269A (en) * | 2022-02-14 | 2022-05-06 | 华北电力大学（保定） | Component and quantity detection device for atmospheric aerosol |
| CN114441269B (en) * | 2022-02-14 | 2023-08-08 | 华北电力大学（保定） | Component and quantity detection device for atmospheric aerosol |
| CN115032124A (en) * | 2022-03-21 | 2022-09-09 | 哈尔滨工程大学 | Experimental device for studying retention characteristics of aerosol in single-size steam bubble under high-temperature and high-pressure conditions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113188852A (en) | Sampling and measuring device for micro-nano aerosol in different environments | |
| CN105865855B (en) | A kind of flue gas sampling purification system for dioxin on-line checking | |
| CN207181111U (en) | HTHP aerosol sampling system | |
| CN207636359U (en) | The SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional | |
| CN101315314B (en) | Atmospheric aerosol trapping method and device | |
| CN210154881U (en) | Sampling system for filterable particles and condensable particles | |
| CN103143184B (en) | Distillation apparatus | |
| CN107462448A (en) | A kind of multiple spot areal sampling system and method for the monitoring of multiphase flow medium composition | |
| CN104655549A (en) | Low-temperature acid dew point corrosion experimental device for power station boiler flue gas | |
| CN104089869B (en) | Filtrate corrosion simulated experiment device and method | |
| CN207964752U (en) | Flue gas condensing dehumidifying decontamination environment activity ion sampling monitoring probe and system | |
| CN112763367B (en) | Lead-bismuth steam circulating filtration and online measurement system | |
| CN108459134B (en) | Sampling monitoring probe, system and method for active ions in flue gas condensation, dehumidification and decontamination environment | |
| CN203941088U (en) | Filtrate corrosion simulated experiment device | |
| CN103691191A (en) | Online vacuum oil-filtering treatment machine of oil | |
| CN107144599B (en) | Flue gas acid dew point measuring device | |
| Zheng et al. | An efficient wet scrubber to remove micron and submicron particles from exhaust gas | |
| Xu et al. | Wetting properties and performance test of modified rigid collector in wet electrostatic precipitators | |
| CN204924941U (en) | Detergent quality analysis miscellaneous pretreatment systems that outgases with constant temperature | |
| CN209014349U (en) | The experimental provision that simulated flue gas content influences sulfur trioxide concentration | |
| CN220715323U (en) | CEMS flue gas pretreatment device of high-efficient safety | |
| CN114252376B (en) | System and method for testing multiple single-item migration mechanisms of aerosol | |
| Lv et al. | The Elaboration of Flow Resistance Model for a Bag Filter Serving a 200 MW Power Plant | |
| CN205607709U (en) | Constant speed sampling device is mixed to matrix | |
| CN214749201U (en) | External cyclone ash taking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210730 |