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Multilayer nested cavitator capable of forming large-range cavitation

A cavitation, nested technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of low energy utilization rate, limited instantaneous action range and small area volume and other problems, to achieve the effect of improving the degradation rate and sterilization efficiency, considerable cavitation effect, and enhancing cavitation effect.

Active Publication Date: 2015-08-12
中科热科技江苏有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

However, the area forming the low-pressure area inside a single Venturi tube accounts for a small proportion of its total volume, so the volume of the area where cavitation occurs is small, resulting in a limited instantaneous range of cavitation and low overall energy utilization

Method used

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  • Multilayer nested cavitator capable of forming large-range cavitation
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  • Multilayer nested cavitator capable of forming large-range cavitation

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 and figure 2 As shown, the multi-layer nested cavitator capable of forming a wide range of cavitation in the present invention includes: an inlet section 1, an inner Venturi cavitator 2, an outer Venturi cavitator 3, and an outlet section 4 and supporting structures 5 .

[0023] The end of the inlet section 1 is radially provided with a supporting structure 5 (such as figure 2 As shown), the support structure is four support cylinders evenly distributed, and the inner Venturi cavitator 2 is supported by the four support cylinders. The fluid enters from the inlet section 1, and enters the inner Venturi cavitator at the same time according to the flow distribution 2 and its gap with the outer Venturi cavitator 3. The inner Venturi cavitator 2 and the outer Venturi cavitator 3 form a coaxial ne...

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Abstract

The invention discloses a multilayer nested cavitator capable of forming large-range cavitation. The multilayer nested cavitator mainly comprises an inlet section used as a flow distribution cavity, and through which a fluid enters the spaces of the various layers of the nested cavitator respectively, a nested tube section composed of two or more coaxial Venturi cavitators, and used for creating necessary pressure conditions for generation of liquid cavitation, an outlet section through which liquids from the various layers of cavitators are collected and flow out of the cavitators. The multilayer nested cavitator disclosed by the invention is capable of effectively expanding the action range of cavitation. A numerical simulation result indicates that compared with a single Venturi cavitator, the average gas holdup is increased by more than 5%, and the total volume of a gas in a cavitation area is increased by more than 16% under the same flow and pressure difference condition.

Description

technical field [0001] The invention belongs to the technical field of liquid cavitation, and in particular relates to a multi-layer nested cavitator capable of forming large-scale cavitation. Background technique [0002] Hydrodynamic cavitation is usually due to the liquid flowing through a flow limiting device with a certain structure, the flow rate increases and the pressure decreases. When the pressure drops to the saturated vapor pressure or even negative pressure corresponding to the temperature, the gas dissolved in the liquid will be released, and the liquid will Vaporization produces a large number of cavitation bubbles, and as the pressure around the liquid recovers, the cavitation bubbles burst. When the cavitation bubble collapses, it will generate instantaneous local high temperature (about 5000°C) and high pressure (above 50MPa), and can form a strong shock wave and a micro jet with a speed greater than 100m / s. It is produced by tens of thousands of continuou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/72
Inventor 蔡军陶跃群淮秀兰刘斌
Owner 中科热科技江苏有限公司
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