High-pressure water jet self-oscillation nozzle device with adjustable structure

Abstract

The invention discloses a high-pressure water jet self-oscillation nozzle device with an adjustable structure, and belongs to the field of industrial cleaning. The device comprises an inlet shrinkagepipe, an oscillation cavity, a water outlet spray sheet and the like. The high-pressure water jet self-oscillation nozzle device is characterized in that a pressure sensor is arranged at a front end pipeline of the nozzle device, and the pressure sensor is always arranged outside a high-pressure container during confining pressure experiments so as to avoid the limit from confining pressure environment; in addition, the free combination of the inlet shrinkage pipe, the oscillation cavity and the water outlet spray sheet can be used for greatly changing the structure parameter ratio of a nozzle, and the self-excitation frequency adjusting range is enlarged; and the oscillation signal real-time detection function is combined with the structure parameter adjustment function so that the oscillation characteristic of the jet flow can be accurately obtained, and then the optimal resonance effect is obtained.

Description

technical field [0001] The invention belongs to the field of industrial cleaning, in particular to a high-pressure water jet self-vibrating nozzle device with adjustable structure. Background technique [0002] Self-oscillating jet is a new type of jet developed in recent years. It has the characteristics of both pulse jet and cavitation jet, and can generate strong self-excited oscillation without additional external drive mechanism. Jet impact effect, the current self-vibrating jet technology has been successfully applied in marine salvage and rescue, deep well oil drilling, deep sea resource exploitation and other fields. [0003] The self-oscillating nozzle device is the core component of the self-oscillating jet, and its structural parameters, especially the cavity and outlet dimensions, directly determine the oscillation effect of the jet. According to the mechanism of self-oscillating jet flow, when the self-excited frequency, that is, the frequency of the exit jet f...

AI Technical Summary

Problems solved by technology

The pressure sensor of the original invention is installed on the side wall of the nozzle, and there are problems such as the limited adjustment range of the nozzle structure parameters, the installation of the pressure sensor is limited by the size of the nozzle, and the reliability of the pressure sensor cannot be guaranteed under high confining pressure.

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