Device for collecting aerosol in near space

Abstract

The invention discloses a device for collecting aerosol in a near space. The device comprises a gas inlet pipe, a gas flowmeter, a molecular pump and a diaphragm pump which are communicated in sequence. A gas inlet is formed in one end, far away from the gas flow meter, of the gas inlet pipe; a gas outlet is formed in one end, far away from the molecular pump, of the diaphragm pump; the flow meter, the molecular pump, the diaphragm pump and the battery are electrically connected with an electric control system respectively; a filter membrane and a supporting net are sequentially arranged in the gas inlet pipe in the axial direction, and the supporting net is closer to the gas flow meter than the filter membrane. According to the device for collecting aerosol in a near space, effective collection of the aerosol in the near space is achieved, and systematic research on the aerosol in the near space is facilitated.

Description

technical field [0001] The invention relates to the technical field of environmental protection monitoring instruments, in particular to an aerosol collecting device in an adjacent space. Background technique [0002] In addition to causing environmental pollution, aerosols can also affect the earth's climate. On the one hand, aerosol particles can directly absorb or scatter solar short-wave radiation; on the other hand, aerosol particles can change or affect the characteristics of clouds, such as shape life span Indirectly affect the sun's short-wave radiation and the earth's long-wave radiation. The particle shapes and sizes of aerosols vary greatly, and the formation mechanisms and chemical properties are different. Moreover, due to the short life cycle of aerosols, the lifespan of aerosols in near space is generally only a few days to a few weeks. However, limited by technology, the research on the effective collection of aerosols is currently limited to the surface. Th...

AI Technical Summary

Problems solved by technology

However, limited by technology, the research on the effective collection of aerosols is currently limited to the surface. The surface aerosol collection device uses a brushless motor to connect the filter membrane in a closed manner to collect aerosols. In order to effectively collect aerosols, the filter membrane is very dense. In the collection process, a high air pressure difference is required before and after the film, but the air in the adjacent space is thin, and the brushless motor cannot generate enough air pressure difference to collect aerosols, so the collection device for surface aerosols cannot be applied to aerosols in adjacent spaces the collection

For the aerosols in the adjacent space, the methods such as observation are still mainly used, and there is a lack of systematic research after collection.

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