Experimental device for testing performance of microfluid inertia impact filter

Abstract

The invention belongs to the technical field of filter equipment performance tests and especially relates to an experimental device for testing performance of a microfluid inertia impact filter. The experimental device comprises an air source, an aerosol generator, a microfluid inertia impact filter and an air filter which are sequentially connected, wherein an instrument is utilized to collect the aerosol concentration, the pressure and the temperature at an inlet / outlet of the aerosol generator and the differential pressure at an inlet / outlet of the microfluid inertia impact filter; the aerosol generator comprises an upper barrel body and a lower barrel body, the upper part and the lower part of the lower barrel body are respectively a cylinder and a reversed cone, an air flow inlet is arranged at the bottom of the reversed cone, a flow dividing pore plate is arranged at the top of the reversed cone, and a powder fluidizing plate is arranged at the top of the cylinder; an air flow outlet is arranged at the top of the upper barrel body, a vibrating motor and a powder storage pipe are respectively fixed to an outer wall of the upper barrel body, the bottom of the powder storage pipe is communicated with the middle part of an inclined feeding section and is communicated with the upper barrel body through the bottom of the inclined feeding section, and the top of the inclined feeding section is communicated with the upper part of the lower barrel body 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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