Compound cavitation cleaner for pipe descaling and with two-grade resonance function

Abstract

The invention discloses a compound cavitation cleaner for pipe descaling and with a two-grade resonance function. The compound cavitation cleaner comprises a blade cleaning structure and a Helmholtz cavitation nozzle; the blade cleaning structure and the Helmholtz cavitation nozzle are connected as a whole through upper and lower self-locking nuts; the Helmholtz cavitation nozzle consists of an inlet cavity, an upper nozzle outlet, a resonance cavity and a lower nozzle outlet; the diameter ratio of the lower nozzle outlet to the upper nozzle outlet is 1.2-2.3; the diameter ratio of the resonance cavity to the lower nozzle is 6-9; and the ratio of the length of the resonance cavity to the diameter of the resonance cavity is 0.5-0.7. The Helmholtz cavitation nozzle can amplify water current shock waves of the upper nozzle outlet through the resonance cavity, and water can be returned after flowing to the lower nozzle outlet, so that higher shock waves are generated to clean pipes, and the better cavitation effect is achieved. The equipment structure is adopted to generate the hydraulic cavitation effect; and the compound cavitation cleaner has the characteristics of simple equipment, convenience in operation and lower cost.

Description

technical field [0001] The invention relates to pipeline descaling technology, which is a compound type cavitation cleaner using low-pressure pipelines for descaling. Background technique [0002] In the development of industrial production, pipeline fouling has always been one of the main factors affecting pipeline transportation capacity and service life. Oilfield oil supply system, tap water supply system, hydropower station drainage system and urban sewage pipeline network have complex pipelines, large usage and long pipelines, which seriously affect the circulation of pipelines. In all walks of life, the pipeline transportation capacity, the service time of the pipeline network, and the cleaning of the pipeline network have always been a major problem restricting the development of the industry. Solving this problem can realize the online cleaning of the pipeline network, increase the service life of the pipeline, and make it have better circulation, Conveying capacity...

AI Technical Summary

Problems solved by technology

[0004] There are some disadvantages in the chemical cleaning method of pipelines: chemical cleaning is easy to pollute the environment due to the use of chemicals, which is harmful to human health, and the residual liquid corrodes the pipe body, so its use is greatly restricted

[0007] However, in this composite cavitation cleaner, after the water flow enters the cavitation nozzle, it can only perform single-stage excitation, and cannot form resonance to make the excitation peak superimposed, so the shock wave generated by the self-excited vibration is small

To produce a good cavitation effect, an external excitation source, such as ultrasonic or laser induction, is required to produce a cavitation effect, which will lead to complex operation, poor adaptability to working conditions and high cost, making it difficult to apply to industrial production.

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