A cavitation nozzle with resonant cavity

Abstract

The invention belongs to the technical field of water-jet cleaning, particularly relates to a cavitation injecting nozzle with a resonant cavity, and aims to solve the problems in the prior art that the working efficiency is low and the safety performance is poor; the cavitation injecting nozzle with the resonant cavity comprises a nozzle body, a clamping groove, a water inlet cavity wall thread, a left-right water inlet cavity, the resonant cavity and a water outlet cavity, wherein the water inlet cavity is circular truncated cone-shaped, the larger bottom surface of the water inlet cavity is positioned at one end of the inner side, where the water inlet cavity wall thread is positioned, of the nozzle body, and the smaller bottom surface is communicated with the resonant cavity; the resonant cavity is positioned between the water inlet cavity and the water outlet cavity and takes the shape of a cylinder with a circular truncated cone-shaped sunk part; the sunk part of the resonant cavity is communicated with the smaller bottom surface of the water outlet cavity; the water outlet cavity is circular truncated cone-shaped, and the smaller bottom surface is communicated with the bottom end of the sunk part of the resonant cavity. According to the cavitation injecting nozzle with the resonant cavity, the design is reasonable, the pressure of the water jet flow is strong, the impacting and crushing effect on an object subjected to water jetting is good, the service life is long, the working efficiency is high, and the safety performance is good.

Description

technical field [0001] The invention relates to the technical field of water jet cleaning, in particular to a cavitation nozzle with a resonant cavity. Background technique [0002] As long as the hulls, heat exchangers, thrusters, and propellers of the underwater parts of various ships are eroded by algae, shellfish and other organisms, the work efficiency will be greatly reduced. As a result, fuel and maintenance costs for engines and other machinery also increase, and a year of biofouling can reduce a ship's speed by 30% to 50%. At present, in the United States, the annual loss due to fouling exceeds 1 billion US dollars, and the pollution loss at sea alone in the world exceeds 60 billion US dollars, of which the pollution from ships accounts for 30%. The underwater part of offshore oil and gas platforms has increased fouling due to intensive biological pollution, which has caused many unforeseen safety problems in the production process. According to preliminary calcul...

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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