CN217211723U - Continuous collection system of atmospheric aerosol liquid phase - Google Patents
Continuous collection system of atmospheric aerosol liquid phase Download PDFInfo
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- CN217211723U CN217211723U CN202123162510.3U CN202123162510U CN217211723U CN 217211723 U CN217211723 U CN 217211723U CN 202123162510 U CN202123162510 U CN 202123162510U CN 217211723 U CN217211723 U CN 217211723U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model belongs to the technical field of the atmospheric aerosol is collected, specifically be an atmospheric aerosol liquid phase continuous collection system. The device comprises: the device comprises an aerosol moisture absorption long cavity, a heating furnace and an aerosol collision collector, wherein the aerosol moisture absorption long cavity is used for absorbing moisture and growing the aerosol; the working process is as follows: the original atmosphere enters an aerosol moisture absorption large cavity; deionized water is heated by a heating furnace to form saturated steam pressurized water vapor which enters an aerosol moisture absorption long cavity, the saturated steam pressurized water vapor in the aerosol moisture absorption long cavity is combined with an atmospheric sample, aerosol particles in the atmosphere absorb supersaturated steam, the particle size is increased, aerosol liquid drops are formed under the condensation action, and the liquid drops collide in an aerosol collision collector under the action of inertia force; and finally collected. The device has high collection efficiency, can be used together with automatic sample introduction and continuous analysis equipment, and is convenient for subsequent on-line continuous analysis.
Description
Technical Field
The utility model belongs to the technical field of the atmospheric aerosol is collected, specifically be atmospheric aerosol liquid phase continuous collection system.
Background
The atmospheric aerosol is a stable mixed system composed of solid particles and liquid particles uniformly dispersed in the atmosphere. They can be used as condensation nucleus of water drop and ice crystal, absorber and scatterer of solar radiation, and play important roles of balancing sea-land ecosystem, regulating environmental factor and promoting nutrient circulation, at the same time, they are also important components of geochemical circulation, and provide important reaction medium for atmospheric multiphase reaction, and are also important components of atmosphere. The atmospheric aerosol has small particle size, is rich in a large amount of toxic and harmful substances, has long retention time in the atmosphere and long transmission distance, and thus, is not negligible to human health and atmospheric environmental quality.
In recent years, the influence of the atmospheric aerosol directly or indirectly causes the rapid increase of the diagnosis rate of residents and the early death of susceptible people. Particularly, toxic and harmful chemical components carried by haze aerosol particles seriously affect the health of people, and cause high social attention. There has been a large body of epidemiological evidence that atmospheric aerosols have acute and chronic health effects. High-concentration aerosol exposure can increase the risk of acute respiratory diseases and cardiovascular and cerebrovascular diseases, and can induce chronic diseases such as lung cancer, COPD (chronic obstructive pneumonia), cardiovascular and cerebrovascular diseases and the like, and influence the immune system, the nervous system and the like of a human body.
As the hot spot and the key point of current scientific research, the physicochemical characteristic analysis of atmospheric aerosol at home and abroad is mainly carried out by sending the atmospheric aerosol into a laboratory for off-line analysis in an artificial membrane sampling mode at present. This sampling-analysis method has more significant drawbacks: (1) a large amount of labor cost is consumed in the pretreatment and sampling processes of membrane sampling, and a laboratory technician can cause the loss of a sampling membrane due to various irresistible factors in the experimental process; (2) during the freezing storage process of the sampling membrane, the total mass of the atmospheric aerosol on the surface of the membrane is more or less lost along with the change of the external environmental conditions, the physicochemical components of the atmospheric aerosol are also changed, and particularly, the oxidation active species are instantaneously extinguished; (3) in the off-line analysis process, certain result errors are generated due to sample loss caused by factors such as personnel operation and system errors, and the result errors are inconsistent with the actual observation results.
For filling above-mentioned technical blank, the utility model discloses the device of the continuous collection of atmosphere aerosol liquid phase who develops can realize online continuous atmosphere aerosol sampling phase, and the saturated vapor pressure condition that its provided makes solid phase atmosphere aerosol directly get into the liquid phase environment. The device can be used together with an automatic sampling device and a continuous analysis device on the premise of ensuring the quality control of data, so that the realization of the on-line artificial intelligent atmospheric aerosol sampling and analysis in the future becomes possible, and the device can be widely applied to environment monitoring and health risk assessment.
Disclosure of Invention
An object of the utility model is to provide an atmospheric aerosol liquid phase continuous collection system easy and simple to handle, reliable, fine particles collection efficiency is high.
The utility model provides a continuous collection system of atmosphere aerosol, its structure is as shown in figure 1, include:
the aerosol moisture absorption long cavity has a main body structure of a cylindrical stainless steel pipe and is used for aerosol moisture absorption and growth; an aerosol inlet is arranged at the front end of the aerosol moisture absorption long cavity; condensation pipes are respectively arranged on the outer sides of the front end and the rear end of the aerosol moisture absorption long cavity and are used for condensing water vapor entering the aerosol moisture absorption long cavity;
the heating furnace is communicated with the front end inlet of the aerosol moisture absorption long cavity through a steam nozzle and is used for providing saturated steam for the aerosol moisture absorption long cavity;
the inner structure of the aerosol collision collector is conical, and the aerosol collision collector is communicated with the rear end outlet of the aerosol moisture absorption long cavity; the upper end of the aerosol collision collector is connected with an air pump connector, the side surface of the aerosol collision collector is connected with a distilled water inlet, and an aerosol collecting liquid outlet is arranged below the aerosol collision collector; the aerosol collision collector is used for collecting the aerosol in a collision way;
the air pump interface is used for connecting an air pump, and the air pump provides power for the device to work;
the distilled water inlet is used for introducing distilled water into the aerosol collision collector;
furthermore, the aerosol moisture absorption long cavity is divided into a front section and a rear section which are connected by a clamp, so that the disassembly is convenient; the front end port of the aerosol collision collector is fixedly connected with the aerosol inlet through a clamp, and the rear end port of the aerosol collision collector is fixedly connected with the aerosol inlet through a screw; the middle part is fixed on the bottom plate by a fixed bracket; the above components are all mounted on the base plate.
The utility model discloses the device carries out atmospheric aerosol continuous sampling to true atmospheric sample, and its flow is: an original atmospheric sample firstly enters the aerosol moisture absorption long cavity from the aerosol inlet; deionized water is heated by a heating furnace to form saturated steam pressurized water vapor, the saturated steam pressurized water vapor enters an aerosol moisture absorption long cavity through a steam nozzle, the saturated steam pressurized water vapor is combined with an original atmospheric sample in the aerosol moisture absorption long cavity, aerosol particles in the atmosphere absorb supersaturated steam, the particle size is increased, aerosol liquid drops are formed under the condensation action, and the liquid drops collide in an aerosol collision collector under the action of inertia force; and the mixed liquid is mixed with distilled water entering from a distilled water inlet, generates spiral motion, and finally enters an aerosol collecting liquid outlet to be collected.
The utility model discloses the rationale of device is: vapor in a supersaturated state is extremely unstable, once condensation nuclei occur, part of vapor is condensed into liquid, and the rest of vapor returns to a saturated vapor state. If small particles such as dust and impurities exist in the air, the water vapor takes the fine particles as crystal nuclei to grow in a rapid combination manner. The grown aerosol is collided in the collision collector and collected in the water solution under the action of the air suction pump, and then enters a next-stage device for detection or analysis under the action of the peristaltic pump.
The beneficial effects of the utility model reside in that:
(1) the device has high collection efficiency on the atmospheric fine particles;
(2) all parts of the device can be disassembled, and the device is easy to maintain;
(3) the device is simple and convenient to operate, reliable and effective;
(4) the device can be used together with automatic sample introduction and continuous analysis equipment, and is convenient for subsequent on-line continuous analysis.
Drawings
Fig. 1 is a schematic structural diagram of a device for continuously collecting liquid phase of atmospheric aerosol.
The reference numbers in the figures: the device comprises a heating furnace 1, a steam nozzle 2, an aerosol inlet 3, a hoop 4 and a hoop 5, a fixed support 6, a condenser pipe 7, an aerosol moisture absorption long cavity 8, an aerosol collision collector 9, an air pump connector 10, a distilled water inlet 11, an aerosol liquid collection outlet 12 and a bottom plate 13.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1: in the process of using the device to continuously sample the atmospheric aerosol of a real atmospheric sample, the original atmospheric sample enters an aerosol moisture absorption long cavity (8) from an aerosol inlet (3), deionized water forms saturated steam pressurized water vapor after being heated by a heating furnace (1), the saturated steam pressurized water vapor enters the aerosol moisture absorption long cavity (8) through a steam nozzle (2), the saturated steam pressurized water vapor is combined with the original atmospheric sample in the aerosol moisture absorption long cavity (8) to enable the aerosol to absorb moisture and grow, the grown aerosol is collected through an aerosol collision collector (9) through a collision effect, the deionized water is injected through a distilled water inlet (11), and the whole process is powered by an air suction pump (10). The aerosol collected in the liquid passes through the aerosol collecting liquid outlet (12) under the action of the peristaltic pump and is collected or connected with other detection equipment for detection.
With (NH) 4 ) 2 SO 4 The solution is used as generating liquid and is generated under the action of an aerosol generator (NH) 4 ) 2 SO 4 The aerosol is used for simulating the aerosol in the atmosphere, so that the collection efficiency of the device is detected.
Claims (2)
1. An atmospheric aerosol liquid phase continuous collection device, characterized by comprising:
the aerosol moisture absorption long cavity (8) has a main body structure of a cylindrical stainless steel pipe and is used for aerosol moisture absorption and growth; an aerosol inlet (3) is arranged at the front end of the aerosol moisture absorption long cavity (8); condensation pipes (7) are respectively arranged on the outer sides of the front end and the rear end of the aerosol moisture absorption long cavity (8) and are used for condensing water vapor entering the aerosol moisture absorption long cavity;
the heating furnace (1) is communicated with the front end inlet of the aerosol moisture absorption long cavity (8) through a steam nozzle (2) and is used for providing saturated steam for the aerosol moisture absorption long cavity (8);
the inner structure of the aerosol collision collector (9) is conical, and the aerosol collision collector (9) is communicated with the rear end outlet of the aerosol moisture absorption long cavity (8); the upper end of the aerosol collision collector (9) is connected with an air pump connector (10), the side surface of the aerosol collision collector is connected with a distilled water inlet (11), and an aerosol collection liquid outlet (12) is arranged below the aerosol collision collector; the aerosol collision collector (9) is used for collecting aerosol in a collision way;
the air pump interface (10) is used for connecting an air pump, and the air pump provides power for the device to work;
and the distilled water inlet (11) is used for introducing distilled water into the aerosol collision collector (9).
2. The continuous collection device for liquid phase of aerosol according to claim 1, wherein the long moisture absorption cavity (8) of aerosol is divided into a front section and a rear section, and the two sections are connected by a clamp so as to be convenient to disassemble; the front end port of the aerosol collision collector is fixedly connected with the aerosol inlet (3) through a clamp, and the rear end port of the aerosol collision collector is fixedly connected with the aerosol collision collector (9) through a screw; the middle of the bracket is fixed on the bottom plate (13) by a fixed bracket (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123162510.3U CN217211723U (en) | 2021-12-15 | 2021-12-15 | Continuous collection system of atmospheric aerosol liquid phase |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123162510.3U CN217211723U (en) | 2021-12-15 | 2021-12-15 | Continuous collection system of atmospheric aerosol liquid phase |
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| CN217211723U true CN217211723U (en) | 2022-08-16 |
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| CN202123162510.3U Active CN217211723U (en) | 2021-12-15 | 2021-12-15 | Continuous collection system of atmospheric aerosol liquid phase |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184437A (en) * | 2021-12-15 | 2022-03-15 | 复旦大学 | Continuous collection system of atmospheric aerosol liquid phase |
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2021
- 2021-12-15 CN CN202123162510.3U patent/CN217211723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184437A (en) * | 2021-12-15 | 2022-03-15 | 复旦大学 | Continuous collection system of atmospheric aerosol liquid phase |
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