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Strong shear type central jet cavitation generator

A strong shearing and generator technology, applied in the field of hydraulic cavitation, can solve problems such as weak shearing effect, poor cavitation effect, and weak cavitation intensity, and achieve enhanced fluid turbulence, improved turbulence, The effect of improving the shear speed difference

Active Publication Date: 2017-03-22
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cavitation generators with structures such as orifice plates and Venturi tubes have a long process from cavitation to collapse, the confining pressure of the cavitation area is small, the cavitation effect is poor, and the cavitation intensity is weak.
The shearing effect of similar nozzle jet cavitation generators is not strong, and there is still a lot of room for improvement

Method used

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  • Strong shear type central jet cavitation generator
  • Strong shear type central jet cavitation generator
  • Strong shear type central jet cavitation generator

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Embodiment Construction

[0022] A strong shear type central jet cavitation generator, comprising an outlet pipe 3, a high-pressure water supply pipe 1, an outlet chamber 2, and a tubular return water chamber 5 connected coaxially and communicated in sequence; the outlet pipe 3 and the outlet pipe The flow chamber 2 is connected; the outer end of the return water chamber 5 is provided with a baffle 6; the outlet end of the high-pressure water supply pipe 1 is located in the outflow chamber 2; the outlet end of the high-pressure water supply pipe 1 is provided with a nozzle 4; The water chamber 5 includes a conical pipe 51 and a throat pipe 52 connected in sequence toward the baffle plate 6 ;

[0023] The inner diameter of the nozzle 4 gradually decreases along the water flow direction, which is a tapered section 41; the liquid outlet end of the nozzle 5 is provided with a straight pipe section 42; Taiwan 43.

[0024] The inner diameter of the throat pipe 52 is larger than the inner diameter of the liq...

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Abstract

The invention discloses a strong shear type central jet cavitation generator. The strong shear type central jet cavitation generator comprises a high-pressure water supply pipe, a nozzle, a water return cavity, a retaining plate, a flow discharge chamber and a flow discharge pipe. The strong shear type central jet cavitation generator is characterized in that high-pressure working flow pressure is converted into kinetic energy by utilizing the nozzle to form high-speed jet; the turbulent fluctuation of the high-speed flow is enhanced by the annular boss at the inner edge of the outlet of the nozzle; return flow is formed by the throat pipe of the water return cavity and the retaining plate, the return flow and the central high-speed jet form a strong shear effect at a position between the outlet of the nozzle and the inlet of the throat pipe, and strong shear cavitation is formed; when the strong shear cavitation flow moves along the conical pipe of the water return cavity, bubbles in the cavitation flow collapse under high pressure to form impact waves and micro-jet, and high temperature and high pressure are generated at the same time. Compared with a same-type shear cavitation generator, the strong shear type central jet cavitation generator is large in shear layer, large in speed difference and strong in shear effect; compared with a cavitator, the strong shear type central jet cavitation generator is good in cavitation effect and high in cavitation intensity.

Description

technical field [0001] The invention belongs to the technical field of hydraulic cavitation, and in particular relates to a strong shear type central jet cavitation generator. Background technique [0002] Hydrodynamic cavitation is a phase transition process and phenomenon between liquid and its vapor that occurs inside the liquid or on the interface between the liquid and the solid due to hydrodynamic factors. The unique physical characteristics of cavitation in the cavitation flow when it is born, developed, and collapsed, and the unique chemical characteristics induced by it can be effectively used in the food industry, bioengineering, and drinking water disinfection, such as sewage treatment, disinfection, etc. . [0003] Existing hydraulic cavitation is mainly realized through orifice plate, Venturi tube, nozzle jet and so on. However, cavitation generators with structures such as orifice plates and Venturi tubes have a long process from cavitation to collapse, the c...

Claims

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Application Information

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IPC IPC(8): C02F1/34
CPCC02F1/34Y02W10/37
Inventor 龙新平王炯
Owner WUHAN UNIV
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