A high-pressure water jet self-excited oscillation nozzle device

Abstract

The invention belongs to the field of industrial washing, in particular to a high-pressure water jet self-oscillation nozzle device which comprises an upper oscillation cavity, an oscillation cavity body, and a lower oscillation cavity. An adjusting gasket is arranged on the fixed contact face of the upper oscillation cavity and the oscillation cavity body. The length of the cavities can be changed through the replacement of the adjusting gasket so as to obtain a best self-oscillation effect. Signals can be transmitted to a data collecting system through a sensor, and an HHT time frequency analysis method is used for extracting and separating the frequency and the amplitude of oscillation signals in the cavities, so that real-time monitoring of the self-oscillation jet signals is realized. The high-pressure water jet self-oscillation nozzle device has the advantages of expanding the application working conditions of self-oscillation nozzles, providing a self-oscillation detection means, being simple in structure, simple and convenient to operate, low in cost, high in working efficiency and practical, and laying a foundation for realizing the real-time monitoring of the self-oscillation jet signals, further modulating jet and obtaining the best self-oscillation effect.

Description

technical field [0001] The invention belongs to the field of industrial cleaning, in particular to a high-pressure water jet self-excited oscillation nozzle device. Background technique [0002] High-pressure water jet is a high-speed water flow with concentrated energy that is sprayed out through a nozzle of a certain shape after being pressurized by high-pressure generating equipment to obtain huge energy with water as the medium. According to the different characteristics of water jet itself, water jet is usually divided into three types: continuous jet, pulse jet and cavitation jet. The self-excited oscillating jet is a new type of high-efficiency pulse jet developed from the principles of fluid mechanics, fluid resonance, fluid elasticity and hydroacoustics. Oscillation is generated in a special fluid structure by self-excitation, and the continuous jet is changed into an oscillating pulse jet. It has the characteristics of pulse jet and cavitation jet, so it has beco...

AI Technical Summary

Problems solved by technology

However, in the actual application process, due to the wear of the jet itself, it is difficult to keep the size of the nozzle cavity unchanged. Even if the size of the cavity remains unchanged, a self-oscillating nozzle can only be applied to a specific working condition. It is also not conducive to the promotion and application of this type of nozzle

It is precisely because of these problems that the self-excited oscillation nozzle has not yet formed a regular product, and is only used in some special equipment.

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