CN103979619A - Impinging stream cavitation device - Google Patents
Impinging stream cavitation device Download PDFInfo
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- CN103979619A CN103979619A CN201410183388.3A CN201410183388A CN103979619A CN 103979619 A CN103979619 A CN 103979619A CN 201410183388 A CN201410183388 A CN 201410183388A CN 103979619 A CN103979619 A CN 103979619A
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Abstract
The invention relates to an impinging stream cavitation device which comprises inlet tubes, an impinging chamber and outlet tubes. The inlet tubes and the outlet tubes are distributed on the impinging chamber. There are at least two inlet tubes. Axis of each inlet tube passes through the center of the impinging chamber. There are at least two outlet tubes. A pore plate provided with a pore or a microscopic capillary is installed inside each inlet tube. A liquid passes through the pore of the pore plate or the microscopic capillary to form a jet stream and cause cavitation; the cavitation liquid jets to converge at the center of the impinging chamber and impinges to generate large eddies; and the liquid flows out of the outlet tubes after impinging. The invention has the following beneficial effects: as the impinging liquid flow is interpenetrated with one another, oscillates back and forth to generate intense collision, extrusion and shearing actions and cause strong micromixing and pressure fluctuation, cavitation bubbles repeatedly perish and are regenerated so as to enhance cavitation intensity and cavitation effect, and the impinging liquid flows out of the outlet tubes. According to the invention, cavitation intensity of a present hydrodynamic cavitation device can be enhanced effectively.
Description
Technical field
Patent of the present invention relates to a kind of Hydrodynamic cavitation equipment, and relating in particular to is a kind of percussion flow cavitation device.
Background technology
Hydrodynamic cavitation is one of main method of liquid generation cavitation.Liquid forms jet by cavitation device, and liquid velocity increases severely, and liquid pressure reduces sharply.When liquid pressure be down to hold-up vapour pressure even below time, because the violent vaporization of liquid produces a large amount of cavitation bubbles.Cavitation bubble, with liquid-flow, forms two-phase flow.In the time that liquid pressure recovers, cavitation bubble moment crumbles and fall and forms microjet and shockwave, produces moment high temperature (1000～5000K) and instantaneous pressure (1～5 × 10
7pa).Liquid cracking produces high chemically active hydroxyl radical free radical, the complicated difficult degradable organic pollutant of can effectively degrading.The Hydrodynamic cavitation device of application mainly contains orifice plate cavitation device and jet flow cavitation device at present.
Two bursts of liquid at high speed flow and clash in opposite directions, reach high speed of relative movement in shock moment, can produce strong microcosmic and mix and pressure surge.(Wu Yuan, " percussion flow-principle, character and application ", Chemical Industry Press, February in 2006 the 1st edition).The cavitation jet that allows Hydrodynamic cavitation device produce clashes into mutually, is a kind of new approaches of strengthening cavitation thereby strengthen cavitation intensity.
Patent 201110425910.0 discloses the equipment of fortified water jet flow cavitation degraded wastewater containing phenol.This equipment allows and clashes into from the cavitation jet of jet flow cavitation nozzle ejection and target disc, acceleration cavitation bubble is crumbled and fall, cavitation bubble is crumbled and fall and concentrated on region between jet flow cavitation nozzle and target disc, make cavitation bubble crumble and fall produce extreme high heat be gathered in this region, form the relatively concentrated High Temperature High Pressure district that crumbles and fall, thus strengthening cavitation effect.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, and a kind of percussion flow cavitation device is provided, can effectively strengthen the cavitation intensity of existing Hydrodynamic cavitation device.
The object of the invention is to complete by following technical solution.This percussion flow cavitation device, comprise inlet pipe, impact cavity and outlet pipe, described inlet pipe and outlet pipe are distributed on impact cavity, and described inlet pipe quantity has two at least, the axis of each inlet pipe is through impact cavity center, and described outlet pipe quantity has two at least; In each inlet pipe, install one and open foraminate orifice plate or microscopic capillary is installed, liquid is formed jet and is produced cavitation by the aperture on orifice plate or microscopic capillary, and the hydrofluidic of cavitation converges at impact cavity center, produces Maelstrom by mutual shock; Liquid after shock flows out from outlet pipe.
Described inlet pipe and the quantity of outlet pipe are 3, are uniform staggered with on the circumference of impact cavity, and the axis of each inlet pipe and outlet pipe, through impact cavity center, is installed one in each inlet pipe and opened foraminate orifice plate.
Described inlet pipe and the quantity of outlet pipe are 2, install one and open foraminate orifice plate in an inlet pipe, and microscopic capillary is installed in another inlet pipe.
Described inlet pipe and the quantity of outlet pipe are 2, are uniform staggered with on the circumference of impact cavity, and the axis of each inlet pipe and outlet pipe, through impact cavity center, is installed one in each inlet pipe and opened foraminate orifice plate.
The interior diameter of described microscopic capillary is 0.01～1.0 times of hole diameter of orifice plate, and the orifice plate of described inlet pipe is 0.01～1000 times of inlet pipe diameter apart from the spacing of impact cavity.
Described impact cavity shape is cylindrical, square, rectangle, ellipse or spherical.
Beneficial effect of the present invention is:
(1) strong pressure surge: between the liquid mutually clashing into, strong interaction occurs, produce thus strong pressure surge; The intensity of pressure surge and frequency be linear increase with the increase of jet stroke speed, and then produces high sound intensity ultrasonic wave, produces ultrasonic cavitation; The stack of ultrasonic cavitation and Hydrodynamic cavitation, makes cavitation bubble crumbling and fall and regenerate repeatedly, thus enhancing cavitation intensity and cavitation effect;
(2) strong microcosmic mixes: liquid stream clashes in opposite directions, and on impact surface, strong momentum transfer occurs liquid stream; Liquid stream group in opposite directions interpenetrates, and reciprocating vibration, strong collision, extruding and shearing action occur, and the distortion of stream group, divides, and effectively promotes the microcosmic of liquid to mix, and improves the uniformity coefficient that liquid microcosmic mixes;
(3) promote chemical reaction: under strong microcosmic mixing and pressure surge effect, can improve the chemical reaction ability of liquid, accelerate chemical reaction velocity.
Brief description of the drawings
Fig. 1 is the structural representation of percussion flow cavitation device of the present invention.
Fig. 2 is the structural representation of microscopic capillary jet of the present invention and orifice plate impinging jet stream cavitation device.
Fig. 3 is the work schematic diagram one that just clashing of the present invention.
Fig. 4 is oblique head-on collision work schematic diagram two of the present invention.
Fig. 5 is the experimental result schematic diagram one that just clashing of the present invention.
Fig. 6 is oblique head-on collision experimental result schematic diagram two of the present invention.
Label in accompanying drawing is respectively: 1, inlet pipe; 2, impact cavity; 3, outlet pipe; 4, orifice plate; 5, jet; 6, Maelstrom; 7, microscopic capillary; 41, aperture; 1-1, the first inlet pipe; 1-2, the second inlet pipe; 3-1, the first outlet pipe; 3-2, the second outlet pipe; 5-1, the first jet; 5-2, the second jet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done to detailed introduction: as shown in Figure 1, the present invention includes inlet pipe 1, impact cavity 2 and outlet pipe 3.Inlet pipe has three, and an orifice plate 4 that has aperture 41 is installed in each inlet pipe.Liquid is divided into three strands, enters this three inlet pipes 1 simultaneously, forms jet 5 by the aperture 41 on orifice plate 4, produces orifice plate cavitation.The hydrofluidic 5 of three bursts of cavitations converges at impact cavity 2 centers, mutually clashes into, and produces Maelstrom 6 simultaneously.The liquid stream group of mutually clashing into interpenetrates, and reciprocating vibration, strong collision, extruding and shearing action occur, and produce strong microcosmic and mix and pressure surge, makes cavitation bubble crumbling and fall and regenerate repeatedly, thus enhancing cavitation intensity and cavitation effect.Liquid after shock flows out from three outlet pipes 3 respectively.Described impact cavity 2 shapes can be cylindrical, square, rectangle, ellipse, the arbitrary shape such as spherical.
As shown in Figure 2, described percussion flow cavitation device inlet pipe 1 has two, and the first inlet pipe 1-1 installs microscopic capillary 7, the second inlet pipe 1-2 orifice plate 4 is installed.The microscopic capillary 7 that one liquid enters in the first inlet pipe 1-1 forms the first jet 5-1, and another strand of liquid also forms the second jet 5-2 by the orifice plate 4 in the second inlet pipe 1-2.Mutually clash into by the first jet 5-1 of microscopic capillary 7 and the second jet 5-2 forming by the aperture 41 of orifice plate 4, cavitation intensity and cavitation effect strengthen thus, and the liquid after shock flows out from the first outlet pipe 3-1 and the second outlet pipe 3-2 respectively.
This is tested, test principle: configure certain density aqueous solution of methylene blue with a certain amount of methylene blue reagent and distilled water, inject storage tank as stock liquid, collect the solution after percussion flow cavitation device at interval of the 10min time, and measure its absorbancy.By calibration curve, obtain methylene blue concentration by inhaling pass degree, and then obtain cavitation and hydroxyl radical free radical (OH) concentration that produces.And (OH) size of concentration can reflect the cavitation effect of this invention.(OH) concentration producing is higher, illustrates that cavitation effect is larger.
As shown in Figure 3, aqueous solution of methylene blue liquid such as is divided at two strands of flow, enters the first inlet pipe 1-1 and the second inlet pipe 1-2 simultaneously.The adjacent angle of the first inlet pipe 1-1 and the second inlet pipe 1-2 is 180 degree.The aperture 41 of the orifice plate 4 by the first inlet pipe 1-1 and the second inlet pipe 1-2 forms jet 5 and enters impact cavity 2.Jet liquid produces orifice plate cavitation.The hydrofluidic of two bursts of cavitations converges at impact cavity 2 centers, mutually clashes into.The liquid stream group of mutually clashing into interpenetrates, and reciprocating vibration, strong collision, extruding and shearing action occur, and produce strong microcosmic and mix and pressure surge, makes cavitation bubble crumbling and fall and regenerating repeatedly.Finally, solution flows out from the first outlet pipe 3-1 and the second outlet pipe 3-2 respectively.At interval of the 10min time, collect the solution of outlet pipe 3, carry out absorbance measurement, and then obtain (OH) concentration, measure hydroxyl radical free radical (OH) concentration producing because of cavitation under different liqs flow, the result obtaining is as shown in Figure 5.
As shown in Figure 4, aqueous solution of methylene blue liquid such as is divided at two strands of flow, enters the first inlet pipe 1-1 and the second inlet pipe 1-2 simultaneously.The adjacent angle of the first inlet pipe 1-1 and the second inlet pipe 1-2 is 90 degree.The aperture 41 of the orifice plate 4 by the first inlet pipe 1-1 and the second inlet pipe 1-2 forms jet 5 and enters impact cavity 2.Jet liquid produces orifice plate cavitation.The hydrofluidic of two bursts of cavitations converges at impact cavity 2 centers, mutually clashes into.The liquid stream group of mutually clashing into interpenetrates, and reciprocating vibration, strong collision, extruding and shearing action occur, and produce strong microcosmic and mix and pressure surge, makes cavitation bubble crumbling and fall and regenerating repeatedly.Finally, solution flows out from outlet pipe 3 respectively.At interval of the 10min time, collect the solution of outlet pipe 3, carry out absorbance measurement, and then obtain (OH) concentration, measure hydroxyl radical free radical (OH) concentration producing because of cavitation under different liqs flow, the result obtaining is as shown in Figure 6.
Be understandable that, for a person skilled in the art, technical scheme of the present invention and inventive concept be equal to replacement or change the protection domain that all should belong to the appended claim of the present invention.
Claims (6)
1. a percussion flow cavitation device, it is characterized in that: comprise inlet pipe (1), impact cavity (2) and outlet pipe (3), described inlet pipe (1) is distributed on impact cavity (2) with outlet pipe (3), described inlet pipe (1) quantity has two at least, the axis of each inlet pipe (1) is through impact cavity (2) center, and described outlet pipe (3) quantity has two at least; In each inlet pipe (1), installing one has the orifice plate (4) of aperture (41) or microscopic capillary (7) is installed, liquid is formed jet (5) and is produced cavitation by the aperture (41) on orifice plate (4) or microscopic capillary (7), the hydrofluidic of cavitation converges at impact cavity (2) center, produces Maelstrom (6) by mutual shock; Liquid after shock flows out from outlet pipe (3).
2. percussion flow cavitation device according to claim 1, it is characterized in that: described inlet pipe (1) and the quantity of outlet pipe (3) are 3, be uniform staggered with on the circumference of impact cavity (2), the axis of each inlet pipe (1) and outlet pipe (3), through impact cavity (2) center, is installed an orifice plate (4) that has aperture (41) in each inlet pipe (1).
3. percussion flow cavitation device according to claim 1, it is characterized in that: described inlet pipe (1) and the quantity of outlet pipe (3) are 2, an orifice plate (4) that has aperture (41) is installed in an inlet pipe (1), microscopic capillary (7) is installed in another inlet pipe (1).
4. percussion flow cavitation device according to claim 1, it is characterized in that: described inlet pipe (1) and the quantity of outlet pipe (3) are 2, be uniform staggered with on the circumference of impact cavity (2), the axis of each inlet pipe (1) and outlet pipe (3), through impact cavity (2) center, is installed an orifice plate (4) that has aperture (41) in each inlet pipe (1).
5. percussion flow cavitation device according to claim 1, it is characterized in that: the interior diameter of described microscopic capillary (7) is 0.01～1.0 times of aperture (41) diameter of orifice plate (4), and the orifice plate (4) of described inlet pipe (1) is 0.01～1000 times of inlet pipe diameter apart from the spacing of impact cavity (2).
6. percussion flow cavitation device according to claim 1, is characterized in that: described impact cavity (2) shape is cylindrical, square, rectangle, ellipse or spherical.
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Cited By (8)
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| CN105481053A (en) * | 2015-12-04 | 2016-04-13 | 哈尔滨工程大学 | Screwed open hole type cavitator |
| CN107188268A (en) * | 2017-07-14 | 2017-09-22 | 核工业理化工程研究院 | A kind of Hydrodynamic cavitation generating means and Hydrodynamic cavitation method for generation based on Venturi tube |
| CN107188267A (en) * | 2017-07-14 | 2017-09-22 | 核工业理化工程研究院 | A kind of big flux Hydrodynamic cavitation generator and Hydrodynamic cavitation process |
| CN107198999A (en) * | 2017-07-14 | 2017-09-26 | 核工业理化工程研究院 | A kind of Hydrodynamic cavitation generating means and Hydrodynamic cavitation method for generation |
| CN107782663A (en) * | 2017-11-27 | 2018-03-09 | 清华大学 | Facilitate easy-to-use controllable vacuole visual experimental apparatus and experimental method |
| CN110559977A (en) * | 2019-10-14 | 2019-12-13 | 钛谷（天津）科技有限公司 | Preparation device of light energy valence-variable ion titanium |
| CN110921770A (en) * | 2019-12-23 | 2020-03-27 | 北京工业大学 | Self-oscillation cavitation impinging stream reactor |
| CN111777215A (en) * | 2020-06-13 | 2020-10-16 | 杨春媛 | Multistage sewage treatment plant |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481053A (en) * | 2015-12-04 | 2016-04-13 | 哈尔滨工程大学 | Screwed open hole type cavitator |
| CN107188268A (en) * | 2017-07-14 | 2017-09-22 | 核工业理化工程研究院 | A kind of Hydrodynamic cavitation generating means and Hydrodynamic cavitation method for generation based on Venturi tube |
| CN107188267A (en) * | 2017-07-14 | 2017-09-22 | 核工业理化工程研究院 | A kind of big flux Hydrodynamic cavitation generator and Hydrodynamic cavitation process |
| CN107198999A (en) * | 2017-07-14 | 2017-09-26 | 核工业理化工程研究院 | A kind of Hydrodynamic cavitation generating means and Hydrodynamic cavitation method for generation |
| CN107198999B (en) * | 2017-07-14 | 2023-10-13 | 核工业理化工程研究院 | Hydrodynamic cavitation generation device and hydrodynamic cavitation generation method |
| CN107782663A (en) * | 2017-11-27 | 2018-03-09 | 清华大学 | Facilitate easy-to-use controllable vacuole visual experimental apparatus and experimental method |
| CN110559977A (en) * | 2019-10-14 | 2019-12-13 | 钛谷（天津）科技有限公司 | Preparation device of light energy valence-variable ion titanium |
| CN110921770A (en) * | 2019-12-23 | 2020-03-27 | 北京工业大学 | Self-oscillation cavitation impinging stream reactor |
| CN111777215A (en) * | 2020-06-13 | 2020-10-16 | 杨春媛 | Multistage sewage treatment plant |
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Application publication date: 20140813 |