An experimental device for testing the performance of microfluidic inertial impact filters

Abstract

The invention belongs to the technical field of filter equipment performance testing, and in particular relates to an experimental device for testing the performance of a microfluidic inertial impact filter, which includes sequentially connected: an air source, an aerosol generator, a microfluidic inertial impact filter and Air filter, and use instruments to collect the aerosol concentration, pressure, temperature at the inlet and outlet of the aerosol generator, and the pressure difference between the inlet and outlet of the microfluidic inertial impact filter. The aerosol generator consists of an upper and lower cylinder. The upper and lower parts of the lower cylinder are shaped like a cylinder and an inverted cone respectively. The bottom of the inverted cone is the air inlet, the top of the inverted cone is a split orifice, and the top of the cylinder is powder fluidization. The top of the upper cylinder is the air outlet, and the outer wall of the upper cylinder is respectively fixed with a vibrating motor and a powder storage tube. The body is connected, and the top of the inclined feeding section communicates with the upper part of the lower cylinder through a pipeline.

Description

technical field [0001] The invention belongs to the technical field of performance testing of filtering equipment, in particular to an experimental device for testing the performance of a microfluid inertial impact filter. Background technique [0002] Under normal circumstances, dense metal elements can almost block the penetration of all fission products. When a serious accident occurs in a nuclear power plant, the core fuel may be damaged, the fuel may melt, and interact with concrete or metal. When the molten core melts through the pressure vessel and the bottom of the containment vessel and comes into contact with concrete, a violent reaction will occur, producing a large amount of aerosols containing radioactive substances. If such aerosols are directly discharged into the atmosphere, it will seriously harm the atmospheric environment. In this case, how to filter the aerosol in the containment of the nuclear power plant in the event of an accident is very important. ...

AI Technical Summary

Problems solved by technology

[0003] Due to the particularity of nuclear power, the filter must be strictly tested, but there is no published literature at home and abroad that includes an experimental device that can be used to test the filtration performance of the microfluidic inertial impact filter.

At the same time, there is no solid powder aerosol generator that can produce low-concentration, high-outlet pressure aerosols

Although the invention patent "A Double-Cylinder Multi-Stage Fluidized Circulating Aerosol Generator" (201210118392.2) mentions an aerosol generator that can be used in high-pressure systems and viscous powder distribution, it is difficult to control the powder output of the device , and the powder output is larger

For the verification experiment of the filtration performance of the microfluidic inertial impact filter, the powder output range per hour is only 0.5-2g, so there is no dust aerosol generator on the market that meets the experimental requirements.

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