Gas-liquid rotary vane separator with microneedle one-way transport surface

Abstract

A gas-liquid rotary vane separator with a microneedle one-way conveying surface comprises an inner cylinder, a gas outlet pipe and an outer cylinder, the top of the outer cylinder is of a closed structure, a through hole used for installing the gas outlet pipe is formed in the center of the outer cylinder, the gas outlet pipe is fixedly connected with the outer cylinder, the inner cylinder is located in the outer cylinder, the inner cylinder and the outer cylinder are connected through outer fins, and the bottom of the inner cylinder extends out of the bottom of the outer cylinder. The micro-needle directional liquid film conveying surfaces are adopted on the inner cylinder wall surface of the gas-liquid rotary vane separator, the top flow guide ring of the descending channel and the wall surface of the gas outlet pipe, so that liquid drop wall surface gathering and liquid film conveying along the wall surface can be enhanced, liquid film breaking and liquid drop secondary carrying are reduced, and fine liquid drops in the gas outlet pipe are captured and diffused on the wall surface to achieve separation; and the separation efficiency of the rotary vane separator is improved.

Description

technical field [0001] The invention relates to a technology in the field of nuclear steam power generation, in particular to a gas-liquid rotary vane separator with a microneedle unidirectional transport surface. Background technique [0002] The steam-water separator in the existing pressurized water reactor nuclear power plant is an important equipment in the steam generator. After the wet steam passes through the steam-water separator, most of the liquid phase is separated, and then enters the steam turbine to perform work. The steam separator usually consists of a rotary vane separator and a dryer. Among them, the rotary vane separator undertakes the task of separating more than 80% of the wet steam. The working principle of the rotary vane separator is that after the steam-water mixture passes through the rotary vane, since the liquid density in the steam-water mixture is significantly higher than the gas density, the liquid migrates to the wall under the action of c...

AI Technical Summary

Problems solved by technology

The main challenge for the improvement of the separation performance of the steam-water separator comes from the entrainment of secondary droplets caused by the breakage of the liquid film on the wall of the rising cylinder and the guide ring, and the weak swirling effect of the outlet pipe is difficult to separate the secondary entrained tiny droplets. Membrane breakup and reduction of secondary droplet entrainment in the outlet pipe

[0003]The existing gravity-based dehumidification steam-water separation technology relies on gravity to guide the liquid film to flow down to realize the timely discharge of the separated liquid and reduce the secondary entrainment of liquid film broken droplets, but it cannot solve the problem. The guidance of the flow direction of the upward-flowing liquid film formed by the upward-flowing gas-liquid of the rotary vane separator and the problem of weak separation of fine droplets under the weak swirling flow of the air outlet pipe

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