CN207108560U - A kind of Hydrodynamic cavitation generating means based on Venturi tube - Google Patents
A kind of Hydrodynamic cavitation generating means based on Venturi tube Download PDFInfo
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- CN207108560U CN207108560U CN201720856192.5U CN201720856192U CN207108560U CN 207108560 U CN207108560 U CN 207108560U CN 201720856192 U CN201720856192 U CN 201720856192U CN 207108560 U CN207108560 U CN 207108560U
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- spherical cavity
- venturi tube
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Abstract
The utility model discloses a kind of Hydrodynamic cavitation generating means based on Venturi tube, including：One spherical cavity, inside have a spherical cavity；Multiple fluid inlet tubes, the lower half of spherical cavity uniformly is arranged on, and is connected with spherical cavity, its axis both passes through spherical cavity center, it is and identical with the angle of horizontal direction, abacus is all provided with fluid inlet tubes, fluid starts to produce bubble via orifice plate, when being injected into spherical cavity lower half, fluid convergence, mixing, collision, further promote cavitation bubble and crumble and fall the process lived again, so as to enhance cavitation intensity；One venturi tube structure, it is connected as fluid issuing with spherical cavity, it is arranged on the surface of spherical cavity, its axis passes through the center of the spherical cavity, in venturi tube structure, cavitation bubble is regenerated, cavitation bubble is crumbled and fall again therewith, microjet and shock wave are formed, produces moment localized hyperthermia and instantaneous pressure.The beneficial effects of the utility model：Flux is big, cavitation efficiency high.
Description
Technical field
Chemical industry fluid technique field is the utility model is related to, is sent out more particularly to a kind of Hydrodynamic cavitation based on Venturi tube
Generating apparatus.
Background technology
When cavitation refers to that local pressure declines in liquid, the formation of gas cavities, hair on liquid internal or the solid interface of liquid
The process opened up and crumbled and fall.When fluid pressure be down to Liquid saturated vapor even it is following when, produced due to the violent vaporization of liquid
Raw a large amount of cavitation bubbles.Cavitation bubble is with liquid flow board expansion, growth.When fluid pressure recovers, cavitation bubble moment crumble and fall to be formed it is micro-
Jet and shock wave, produce moment localized hyperthermia (1000~5000K) and instantaneous pressure (1~5 × 107Pa).Cavitation can cause
Hydraulic mechanical equipment hydraulic performance decline, cause vibration, noise and cavitation erosion etc., but the energy of cavitation phenomenon release can also be subject to
Utilize, to realize the reinforcing to processes such as chemistry, physics, reach synergy, energy-conservation, consumption reduction and other effects.
The factor according to caused by cavitation, it is generally divided into acoustic cavitation, light cavitation, particle cavitation and the type of Hydrodynamic cavitation four.
Due to efficiency caused by cavitation and the complexity of engineer applied, in four kinds of patterns, acoustic cavitation and Hydrodynamic cavitation be academia and
The focus of industrial quarters concern.At present, acoustic cavitation only obtains better effects in laboratory, but is applied to pilot scale or industrialization
When, it may appear that the problems such as cavitation field is uneven, and cavitation efficiency declines, and flux is smaller, and amplification difficulty is larger.
For ultrasonic cavitation, Hydrodynamic cavitation equipment is simple, cost is cheap, can produce large-scale cavitation field, work
The potentiality of industryization application are very big, obtained in the field such as sterilizing, organic sewage wastewater treatment, jet flow cleaning and chemical separating at present
To application.
Chinese patent 200410021098.5 discloses a kind of bactericidal unit that cavitation is produced by multi-hole orifice, utilizes sky
Instantaneous high-temperature high pressure caused by occurring is changed to carry out sterilization to liquid charging stock, the device has big yield, efficiency high, behaviour
The features such as making convenience, instantaneously sterilising, localized hyperthermia, integral normal temperature, so as to avoid in liquid charging stock the destruction of active ingredient with
Cross thermal decomposition.Chinese patent 200410066214.5 discloses a kind of technical field of chemical separation convolution cavitation device that is used for can be
Relatively low temperature and it is not added with either low to being carried out containing water-emulsified oil or emulsified oily watewater less plus under conditions of chemical demulsifier
Cost and efficient demulsification processing.It is empty that Chinese patent 201120568210.2 discloses a kind of waterpower for stain disease processing
Makeup is put, and the device possesses multiple cavitation cavities, cavitation efficiency high.And ozone can be introduced to cavitation chamber, ozone is in Hydrodynamic cavitation
Under high-temperature and high-pressure conditions caused by effect, the hydroxyl radical free radical with more strong oxidizing property can be resolved into, is further increased
Cavitation efficiency.Also settable catalyst TiO in the device2With γ-Al2O3, more hydroxyl radical free radicals are produced, are further strengthened
The removal effect of organic matter in stain disease.
Gradually deeply, although the cavitation device structure type proposed increases the research to Hydrodynamic cavitation, Hydrodynamic cavitation
Cavitation intensity it is smaller, it is less efficient, be often not enough to play the triggering or invigoration effect of some physical-chemical reactions.In addition,
Cavitation reactor treating capacity is smaller, needs more table apparatus to be used in parallel or in series during processing on a large scale, causes processing system pipeline
Huge structure, complexity, are still difficult to industrial application.
Utility model content
The purpose of this utility model is to be directed to technological deficiency present in prior art, and is provided：
A kind of Hydrodynamic cavitation generating means based on Venturi tube of the present utility model has that liquid flow flux is big, structure letter
Single, cost is cheap, the advantages of reliable operation, suitable for industrializing large-scale promotion application.
Technical scheme is used by realize the purpose of this utility model：
Hydrodynamic cavitation generating means based on Venturi tube, including：
One spherical cavity, inside have a spherical cavity；
One cavitation-enhanced module, it is concentric to be arranged in spherical cavity；
Multiple fluid inlet tubes, the lower half of spherical cavity is uniformly arranged on, and be connected with spherical cavity, the stream
The axis of body inlet tube both passes through spherical cavity center, and identical with the angle of horizontal direction, is all provided with fluid inlet tubes
Abacus, fluid start to produce bubble, when being injected into spherical cavity lower half, fluid is converged, mixes, touched via orifice plate
Hit, further promote cavitation bubble and crumble and fall the process lived again, so as to enhance cavitation intensity；
One venturi tube structure, it is connected as fluid issuing with spherical cavity, is arranged on the surface of spherical cavity, its
Axis passes through the center of the spherical cavity, in venturi tube structure, regenerate cavitation bubble, and cavitation bubble is therewith again
Crumble and fall, form microjet and shock wave, produce moment localized hyperthermia and instantaneous pressure.
Preferably, the fluid inlet tubes are provided with two or three.
Preferably, the percent opening of the orifice plate is 20%-75%.
Preferably, the venturi tube structure includes throat neck section, expanding section and the liquid outlet being sequentially connected from down to up
Section, the throat neck section, expanding section and the concentric setting of liquid outlet section.
Preferably, the expanding section flare structure, the bottom diameter of expanding section is identical with the diameter of throat neck section, extension
The top end diameter of section is identical with the diameter of liquid outlet section.
Preferably, the cavitation-enhanced module is smooth surface shape, and sectional area gradually increases from bottom to top, and the cavitation increases
The lowermost end of strong module is located at the center of spherical cavity.
Preferably, 0.5-1.2 times of a diameter of throat neck section diameter of the cavitation-enhanced module.
Preferably, the cavitation-enhanced modular shape is elliposoidal or wing.
Preferably, the seamless bonding of orifice plate or it is welded on the inwall of fluid inlet tubes.
Preferably, the minimum point of the cavitation-enhanced module is located at the top of fluid inlet tubes.
The Hydrodynamic cavitation method for generation of the Hydrodynamic cavitation generating means based on Venturi tube, comprises the following steps：
S1：Fluid enters in fluid inlet tubes, by orifice plate, due to the throttling action of orifice plate, flow velocity increase, hydrostatic pressure
Reduce, when pressure reaches the saturated vapor pressure of even below fluid at such a temperature, fluid starts gasification and produces bubble, dissolving
Gas in fluid also separates out in the form of bubbles.Bubble gradually expands after producing, grown, and forms gas-liquid two-phase fluid；
S2：Gas-liquid two-phase fluid is injected into spherical cavity from orifice plate, in spherical cavity the latter half, fluid convergence,
Mixing, collision.Fluid when entering top half, acts on, in its table by spherical cavity the latter half with cavitation-enhanced module
Face occurs boundary layer and departed from, and forms violent turbulance.
S3：After fluid enters spherical cavity top half, it is stable to obtain temporary buffer.Along sphere flowing gradually taper up into
Enter throat neck section 5, increase therewith because runner shrinks flow velocity, static pressure reduces, and regenerates cavitation bubble；
S4：Two-phase fluid is injected into expanding section, and as runner extends, pressure is gradually recovered, cavitation bubble therewith again
Crumble and fall, form microjet and shock wave, produce moment localized hyperthermia and instantaneous pressure.
Compared with prior art, the beneficial effects of the utility model are：
1st, the utility model device is simple in construction, and processing flux is big, and equipment manufacturing costs are cheap, cavitation efficiency high, is applicable
In industrialization large-scale application.
2nd, due to larger processing flux, the peace of parallel pipeline can be reduced using the water treatment system of the present apparatus
Dress, the scale and complexity of pipe-line system are reduced, reduce floor space, reduce input cost.
3rd, can horizontal direction install and use, also can horizontal direction install and use.
Brief description of the drawings
Fig. 1 show the diagrammatic cross-section of the utility model embodiment.
Fig. 2 is the device schematic top plan view for the utility model embodiment.
In figure：1 is fluid inlet tubes, and 2 be orifice plate, and 3 be spherical cavity, and 4 be cavitation-enhanced module, and 5 throat neck sections, 6 be expansion
Section is opened up, 7 be liquid outlet section.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description only to explain the utility model, is not used to limit the utility model.
As shown in Figure 1-2, a kind of Hydrodynamic cavitation generating means based on Venturi tube, including fluid inlet tubes 1, orifice plate 2,
Spherical cavity 3, cavitation-enhanced module 4, throat neck section 5, expanding section 6 and liquid outlet section 7, multiple fluid inlet tubes 1 and spherical cavity
The latter half of body 3 is connected, and each inlet tube axis of fluid inlet tubes 1 both passes through the center of spherical cavity 3, and and horizontal direction
Angled a (a is 0 degree~80 degree), fluid inlet tubes 1 at least two, is provided with two fluid inlet tubes 1, is set in Fig. 2 in Fig. 1
There are three fluid inlet tubes 1, fluid inlet tubes 1 are uniformly distributed the bottom of spherical cavity 3.One is respectively mounted in each fluid inlet tubes 1
Block opens foraminate orifice plate 2, and liquid can produce cavitation bubble after orifice plate 2.Throat neck section 5, expanding section 6 and liquid outlet section 7 according to
It is secondary coaxially connected, venturi tube structure is formed, its axis passes through the center of spherical cavity 3, is connected in surface with spherical cavity 3.
Cavitation-enhanced module 4 is fixed on the center of spherical cavity 3.
Fluid enters in fluid inlet tubes 1, by orifice plate 2, due to the throttling action of orifice plate, flow velocity increase, hydrostatic pressure
Reduce, when pressure reaches the saturated vapor pressure of even below fluid at such a temperature, fluid starts gasification and produces bubble, dissolving
Gas in fluid also separates out in the form of bubbles.Bubble gradually expands after producing, grown, and forms gas-liquid two-phase fluid.Gas-liquid
Two-phase fluid is injected into spherical cavity 3 from orifice plate 2.In the latter half of spherical cavity 3, fluid convergence, mixing, collision, together
When acted on cavitation-enhanced module 4, its surface occur boundary layer depart from, form violent turbulance.In this case it is a large amount of
Cavitation bubble is repeated continuously the process crumble and fall, produce, growing, crumbling and fall, and strong collision, extruding and shearing occur between fluid and makees
With.Pressure oscillation caused by this phenomenon and concussion, which have, to be further promoted cavitation bubble and crumbles and fall the process lived again, so as to enhance
Cavitation intensity, improve cavitation efficiency.
After fluid enters the top half of spherical cavity 3, it is stable to obtain temporary buffer.Entrance is gradually tapered up along sphere flowing
Throat neck section 5, increase therewith because runner shrinks flow velocity, static pressure reduces, and regenerates cavitation bubble.Two-phase fluid is injected into extension
Section 6, as runner extends, pressure is gradually recovered, and cavitation bubble is crumbled and fall again therewith, forms microjet and shock wave, production
Raw moment localized hyperthermia and instantaneous pressure.
Described above is only preferred embodiment of the present utility model, it is noted that for the general of the art
For logical technical staff, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as the scope of protection of the utility model.
Claims (9)
- A kind of 1. Hydrodynamic cavitation generating means based on Venturi tube, it is characterised in that：Including：One spherical cavity (3), inside have a spherical cavity；One cavitation-enhanced module (4), it is concentric to be arranged in spherical cavity (3)；Multiple fluid inlet tubes (1), the bottom of spherical cavity (3) is uniformly arranged on, and be connected with spherical cavity (3), its Axis both passes through spherical cavity (3) center, and with the angle all same of horizontal direction, is all provided with abacus in fluid inlet tubes (1) (2)；One venturi tube structure, it is connected as fluid issuing with spherical cavity (3), is arranged on the surface of spherical cavity (3), Its axis passes through the center of the spherical cavity (3).
- A kind of 2. Hydrodynamic cavitation generating means based on Venturi tube according to claim 1, it is characterised in that：The text Venturi structure includes throat neck section (5), expanding section (6) and the liquid outlet section (7) being sequentially connected from down to up, the throat neck section (5), expanding section (6) and liquid outlet section (7) concentric setting.
- A kind of 3. Hydrodynamic cavitation generating means based on Venturi tube according to claim 2, it is characterised in that：The expansion Section (6) flare structure is opened up, the bottom diameter of expanding section (6) is identical with the diameter of throat neck section (5), the top of expanding section (6) Diameter is identical with the diameter of liquid outlet section (7).
- A kind of 4. Hydrodynamic cavitation generating means based on Venturi tube according to claim 1, it is characterised in that：The sky Change enhancing module (4) and venturi tube structure be coaxial, the cavitation-enhanced module (4) is smooth surface shape, sectional area from it is lower to Upper gradually increase.
- A kind of 5. Hydrodynamic cavitation generating means based on Venturi tube according to claim 1, it is characterised in that：The hole The percent opening of plate (2) is 20%-75%.
- A kind of 6. Hydrodynamic cavitation generating means based on Venturi tube according to claim 1, it is characterised in that：The sky Change enhancing module (4) and be shaped as elliposoidal or wing.
- A kind of 7. Hydrodynamic cavitation generating means based on Venturi tube according to claim 1, it is characterised in that：The hole The bonding or be welded on the inwall of fluid inlet tubes (1) that plate (2) is seamless.
- A kind of 8. Hydrodynamic cavitation generating means based on Venturi tube according to claim 2, it is characterised in that：The sky Change a diameter of throat neck section (5) diameter of enhancing module (4) 0.5-1.2 times.
- A kind of 9. Hydrodynamic cavitation generating means based on Venturi tube according to claim 1, it is characterised in that：The stream Body inlet tube (1) is provided with two or three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720856192.5U CN207108560U (en) | 2017-07-14 | 2017-07-14 | A kind of Hydrodynamic cavitation generating means based on Venturi tube |
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| CN201720856192.5U CN207108560U (en) | 2017-07-14 | 2017-07-14 | A kind of Hydrodynamic cavitation generating means based on Venturi tube |
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| CN207108560U true CN207108560U (en) | 2018-03-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109626546A (en) * | 2018-12-18 | 2019-04-16 | 西安交通大学 | A kind of ring wall distribution jet flow cavitation water treatment facilities |
| CN109965749A (en) * | 2019-04-01 | 2019-07-05 | 辽宁大学 | Magnetic force Hydrodynamic cavitation Constant temperature bathtub |
| CN114275952A (en) * | 2021-12-10 | 2022-04-05 | 山东大学 | Two-stage sulfide wastewater degradation device based on hydrodynamic cavitation |
-
2017
- 2017-07-14 CN CN201720856192.5U patent/CN207108560U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109626546A (en) * | 2018-12-18 | 2019-04-16 | 西安交通大学 | A kind of ring wall distribution jet flow cavitation water treatment facilities |
| CN109965749A (en) * | 2019-04-01 | 2019-07-05 | 辽宁大学 | Magnetic force Hydrodynamic cavitation Constant temperature bathtub |
| CN114275952A (en) * | 2021-12-10 | 2022-04-05 | 山东大学 | Two-stage sulfide wastewater degradation device based on hydrodynamic cavitation |
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