Ultrasonic wave and pressure rotary atomizer

Abstract

The invention provides an ultrasonic wave and pressure rotary atomizer, comprising an ultrasonic wave energy converter and a pressure rotating liquid nozzle, wherein the ultrasonic wave energy converter comprises an energy converter back cover plate, a pretightening bolt and a pretightening nut, piezoelectric crystal and a nozzle front cover; the pressure rotating liquid nozzle comprises a drainage member, a gasket, a swirl member and a nozzle head; the piezoelectric crystal is clamped between the nozzle front cover and the energy converter back cover plate by the pretightening bolt and the pretightening nut; the nozzle head is installed on the drainage member and arranged at the front end of the nozzle front cover; the drainage member and the swirl member are arranged in the nozzle head; the gasket is clamped between the drainage member and the swirl member; an O-shaped seal ring is arranged between the nozzle head and the nozzle front head; and a swirl chamber is arranged in the middle of the swirl member. The atomizer can further generate liquid drops the Sauter diameters of which are several microns to one micron on the basis of the pressure rotating nozzle, thereby overcoming the pressure bottleneck of the pressure rotating nozzle after the size of the liquid drop is decreased to a certain degree.

Description

technical field [0001] The invention relates to an atomizing device, in particular to a pressure rotary atomizing nozzle coupled with ultrasonic waves. Background technique [0002] Ultra-fine atomization is one of the prerequisites and key technologies for the wide application of gas turbine wet compression technology. In the wet compression process, the size of the liquid droplets directly determines the performance of the wet compression system, and only the completely evaporated liquid droplets can make the wet compression system exert its maximum potential. The droplets are too large, and in addition to not being able to evaporate completely, the larger droplets will impact the impeller of the compressor, shortening the service life of the compressor. This requires the development of a new type of atomizing nozzle that can produce droplets with a Sauter diameter of several microns to more than ten microns to meet the requirements of wet compression. [0003] The press...

AI Technical Summary

Problems solved by technology

[0003] The pressure rotary nozzle is an atomizer that uses the swirl parts inside the nozzle to rotate the liquid at high speed, and accelerates the spray in the converging channel to form a hollow conical liquid film for atomization. It is characterized by the formation of droplets The Sauter diameter is small and the distribution is relatively uniform. The disadvantage is that after the Sauter diameter is small to a certain extent, it requires extremely high injection pressure to further reduce the droplet size.

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