EP1203888A1 - Dispositif pour influencer l'ecoulement d'un fluide - Google Patents

Dispositif pour influencer l'ecoulement d'un fluide Download PDF

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Publication number
EP1203888A1
EP1203888A1 EP97933984A EP97933984A EP1203888A1 EP 1203888 A1 EP1203888 A1 EP 1203888A1 EP 97933984 A EP97933984 A EP 97933984A EP 97933984 A EP97933984 A EP 97933984A EP 1203888 A1 EP1203888 A1 EP 1203888A1
Authority
EP
European Patent Office
Prior art keywords
channel
flow
flowing medium
opening
introducing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97933984A
Other languages
German (de)
English (en)
Other versions
EP1203888A4 (fr
Inventor
Sergei Borisovich Osipenko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naukovo-virobnicha TECHMASH Ltd Firma
Original Assignee
Naukovo-virobnicha TECHMASH Ltd Firma
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Naukovo-virobnicha TECHMASH Ltd Firma filed Critical Naukovo-virobnicha TECHMASH Ltd Firma
Publication of EP1203888A1 publication Critical patent/EP1203888A1/fr
Publication of EP1203888A4 publication Critical patent/EP1203888A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/56—Mixing liquids with solids by introducing solids in liquids, e.g. dispersing or dissolving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/27—Mixing by jetting components into a conduit for agitating its contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/918—Counter current flow, i.e. flows moving in opposite direction and colliding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/41—Emulsifying

Definitions

  • the invention relates to the construction of devices for influencing the Flow of a flowing medium, more precisely, the construction of flow generators controlled hydrodynamic cavitation in a stream.
  • Cavitation i.e. the disturbance of the closedness of a liquid due to local Pressure drops below a critical value that is practically equal to the pressure of the Saturated vapor of this liquid at a certain temperature is used in technology Usually considered an undesirable phenomenon. Indeed diminished Cavitation that occurs spontaneously during the operation of marine engines, work wheels occurs from water turbines and from working elements of pumps or water motors, their efficiency, causes intense erosion, generates strong noise and can premature (and what is particularly dangerous - too unexpected) destruction of the above Guide parts of the water machines. From this point of view is unregulated Cavitation and its consequences are described in most encyclopedia manuals (see e.g. Articles "cavitation”, cavitation erosion “,” cavitation noise “in the McGrow-Hill dictionary, Dictionary of Scientific and Technical Terms ", second edition, p. 261).
  • the much more powerful and productive heat generator according to the USSR copyright certificate 1 703 924 has a recirculation circuit of a liquid heat transfer medium with a centrifugal pump as a means of fluid acceleration and a Water-water tubular jacket heat exchanger as a means of heat dissipation.
  • the warming of the liquid medium takes place in such a heat generator due to its intense swirling. Therefore, to avoid cavitation at the middle Inlet port of the pump of this heat generator a "blasting device" (nozzle) attached to the supply of the pump with a higher, the cavitation exclusive pressurized liquid guaranteed.
  • cavitation is very useful under certain conditions and is widely used in technology, for example: to clean any machine parts from grease soiling before applying a top coat; to obtain stable suspensions or emulsions by dispersing solid or liquid substances in immiscible or non-dissolving liquids etc.
  • These processes are usually carried out using devices for producing controlled acoustic cavitation using ultrasound (see, for example, "Politehni eskij slovar "', M .;” Sovetskaâ E ⁇ ncyklopediâ ", 1976, Art.”Ul'trazvukovaâ obrabotka "(processing by ultrasound), p. 520).
  • ultrasound is very suitable as a "cavitation factor" because of the vibration amplitude and its power density is preferably accurate and in the liquid medium can be regulated evenly, and it is practically irreplaceable in cases when Cavitation in non-Newtonian (highly viscous or plastic) liquids generate or in any liquids that are in non-solid vessels.
  • hydrodynamic cavitation is used and corresponding devices for influencing the flow of a flowing Medium desirable, which is an adjustable generation and a collapse of the Ensure cavities.
  • One of the devices is in the form of a body which is difficult to flow around coaxially with the flow channel and which is fastened to the wall of the channel with at least one holder, and inside the body there is an outlet opening which is also coaxial with the flow channel for insertion
  • the opening communicates with a liquid source for the formation of the interference jet via a recess in the body of the holder and via an opening in the wall of the flow channel.
  • the said interference jet serves as a second means for generating the hydrodynamic cav itation.
  • the object of the present invention is therefore by optimizing the organizational means the interaction of the main flow with that to be introduced into it Disturbance beam such a device for influencing the flow of a flowing To create medium with the generation of an adjustable hydrodynamic cavitation, in which hydraulic losses and noise are significantly reduced (and the Reliability and efficiency are increased accordingly), and the one regulation of the generation processes and the collapse of the Cavities guaranteed.
  • the object is achieved in that in the device for influencing Flow of a flowing medium, comprising an axially symmetrical flow channel for pumping through the main part of the flowing medium and a Opening in the wall of the channel for the introduction of an interference beam into the main stream and for generating hydrodynamic cavitation according to the invention said opening leads directly into the channel space and its geometric axis corresponds to the geometric axis of the Channel intersects at an angle that is selected in a range between -60 ° to + 45 ° becomes.
  • a first additional difference is that the device has at least one more arranged in the wall of the flow channel and also directly into it leading opening for introduction into the main stream of an additional interference beam same or one of the flowing medium according to the composition having. If necessary, this allows, on the one hand, cavitation to a limited extent intensify or "expand" the cavitation zone along the channel, and to second, in the main stream of the flowing medium of chemical composition after introducing different ingredients.
  • a second difference, supplementary to the first, is that the ratio of the diameter d 1 of each opening in the channel wall to the inside diameter D K of the channel (d 1 / D K ) does not exceed 0.125. This allows, on the one hand, to increase the reliability of the proposed device by limiting the maximum possible size of the cavities, and, on the other hand, to form both the main flow and the interference beams from one and the same source of the flowing medium as effectively as possible.
  • the first supplementary difference provides that the opening exits are arranged along the channel circumference in approximately a transverse plane. This allows an intensive cavitation in a very limited volume Trigger section of the channel, which is particularly important with the emulsion or Suspension corresponding to highly viscous liquid or stable solid substances in one flowing dispersion medium and highly viscous in thermomechanochemical processing Substances (especially with thermomechanical polymer degradation).
  • the third supplementary difference provides that the exit openings mentioned arranged for introducing the interference beams at equal angular intervals are.
  • the advantages of the proposed device mentioned above occur as a dispersant particularly clearly.
  • the first supplementary difference provides that the exit openings are arranged one behind the other along the channel for introducing the interference beams.
  • the exit openings are arranged one behind the other along the channel for introducing the interference beams.
  • a seventh difference supplementing the first, provides that in the wall of the above Channel at least one opening for introducing gas into the flowing medium is provided which is in the flow direction behind the opening for introducing the interference beam is arranged.
  • the main advantage of this embodiment of the proposed The device consists in the artificial damping of cavitation downstream. This is particularly important in such cases when the proposed device as an activator chemical processes in relation to excessive thermomechanochemical influences sensitive reaction mixtures is used.
  • Another advantage of this embodiment consists in the possibility of saturating the flowing medium with any gas useful for its further use (e.g. during production foaming drinks), as well as the possibility of repeated carbonation such flowing media, such as beer, during their thermomechanical sterilization before Filling in cans for long-term storage.
  • An eighth, additional to the seventh difference provides that the device is a Has opening for introducing gas into the flowing medium, which is in the direction of flow is arranged after the last opening for introducing the interference beam.
  • This embodiment of the inventive concept is particularly simple.
  • the seventh supplementary difference provides that the proposed Device multiple openings for introducing gas into the flowing medium has, the geometric axes of these openings and the openings for Introducing the interference beams are arranged approximately in one plane.
  • This embodiment the proposed device is particularly effective when the flowing medium with gases.
  • the seventh supplementary difference provides that the geometric axis each opening for the introduction of gases crosses the axis of the channel at an angle, selected from the range from -10 ° to + 60 °. If this condition is met the damping of cavitation in the flowing medium downstream from the location of the Introduction of the interference beam from particularly effective.
  • An eleventh additional difference provides that the above-mentioned channel for pumping through of the main flow of the flowing medium, a cylindrical section and an inlet nozzle has, the sleeve for connection to the accelerating means of flowing medium is provided in the channel. This will accelerate the Main flow of the flowing medium is ensured before the cavitation is triggered.
  • a twelfth, and eleventh, difference is that at least one Opening for introducing the disturbing jet of the flowing medium into its main stream is in the form of a bypass pipe socket, the input portion provided for connection to the accelerating means of the flowing medium in the channel is.
  • a thirteenth, the twelfth complementary difference is that the above Bypass is provided with a regulator of the passage cross section, whereby an adaptation of the proposed device to the required conditions of Cavitation becomes possible immediately during its operation.
  • the device for influencing the flow of a flowing medium has at least one axially symmetrical flow channel delimited by a wall 1 for pumping through the main flow of the flowing medium and at least an opening 2 in the wall 1 of said channel for introducing an interference beam the same or the chemical composition according to other flowing medium into its main stream to trigger hydrodynamic cavitation.
  • the Opening 2 must be open directly into the flow channel, and its geometric axis the geometric axis of the channel must be at an angle between -60 ° and + 45 ° cross.
  • the angle of inclination from 0 ° is calculated, which is the Vertical corresponds to the geometric axis of the channel through the wall 1 of the is limited.
  • the information (-) and (+) indicate such angles of inclination geometrical axes of the openings 2 towards the geometrical axis of the channel, at which the interference rays counter or with the flow direction of the main flow of the flowing medium.
  • the technological possibilities of the proposed device increase however, significantly if the number of openings 2 in the wall 1 that are directly in open the flow channel and its geometric axis in the specified Range angles are inclined, not less than (preferably more than) two is.
  • the openings 2 are arranged one behind the other the area of the cavitation "extends" along the channel, causing one relatively soft operation of the components (e.g. fat drops in milk) effectively within of the flowing medium can be dispersed and / or the same or different Additives introduced into the main stream of the flowing medium and can be mixed.
  • the components e.g. fat drops in milk
  • the cavities are generated in one very limited scope, resulting even from intense hydraulic blows highly stable solid additives to the main stream of the flowing medium are dispersed can or polymers, cubic processing residues (especially highly viscous) crude oils, Rubber particles, etc. can be degraded mechanochemically.
  • the ratio of the diameter d 1 of each opening 2 to the inside diameter D K of the channel (d 1 / D K ) does not exceed 0.125 lies. If this condition is complied with, an overlap of the space between the flow channel by the cavities that form is practically impossible, and accordingly their collapse with direct (not transmitted via a layer of the flowing medium) transmission of the impact impulses to the wall 1. In the formation of the main flow and Interference rays from the same source of the flowing medium also make it possible to stabilize the size of the cavities that form and the level of the hydrodynamic noise.
  • each subsequent stage of the triggering of cavitation in the flow of the flowing medium begins after the collapse of the cavities which have arisen when the preceding perturbing jet was sprayed.
  • This effect which serves to considerably increase the reliability of the proposed device, can be observed especially when the aforementioned condition (d 1 / D K ) ⁇ 0.125 is observed.
  • At least in the wall 1 of the said channel to have an opening 3 for introducing gas into the flowing medium, which is downstream is arranged at a distance from the opening 2 for the introduction of the interference beam.
  • angles of inclination are also calculated from 0 °, that of the vertical correspond to the geometric axis of the channel delimited by wall 1.
  • the information (-) and (+) indicate such angles of inclination of the geometric Axes of the openings 3 to the geometric axis of the channel, in which the Gas flows against or with the flow direction of the main flow of the flowing Medium run.
  • openings 3 are arranged behind the last opening 2 for introducing the interference beams (see FIG. 4). However, if there are several openings 3, it is desirable to use the geometric axes of these openings 3 and the openings 2 for introducing the Arrange interference beams approximately in one plane (see FIG. 2 again). The exits of the openings 3 are to be arranged downstream with respect to the previous openings 2.
  • the main task of introducing gas into the stream of the cavitating flowing Medium is the calming of this medium, the reduction of hydrodynamic Noise and, accordingly, increasing the reliability of the invention Device as such and the technological systems in which this to be installed.
  • the channel for pumping through the main flow of the flowing medium is cylindrical Section 4 and an inlet nozzle 5, the sleeve for connection to the Accelerating means of the flowing medium is provided in the channel.
  • each opening 2 for introducing the interference beam of the flowing medium into its main stream is provided for connection to said acceleration means, in particular over a space of the nozzle 5, as shown in FIG. 7.
  • a heat-generating in Fig. 8 and 9 Device shown. It has an electric motor (or other energy source) 8, preferably a centrifugal pump 9, a heat accumulator vessel 10, the lower part of which is connected to an inlet of the pump 9 via a feed pipe 11 is a device 12 for influencing the flow of a flowing Medium, which is connected to an acceleration connector of the pump 9, and a gas (preferably air) storage separator 13, which over the lid (or on the Cover) of the heat accumulator 10 is arranged and between the gas space (Air space) of the vessel 10 and a flow channel of the device 12 interposed is.
  • an electric motor or other energy source
  • a centrifugal pump 9 preferably a centrifugal pump 9
  • a heat accumulator vessel 10 the lower part of which is connected to an inlet of the pump 9 via a feed pipe 11 is a device 12 for influencing the flow of a flowing Medium, which is connected to an acceleration connector of the pump 9, and a gas (preferably air) storage separator 13, which over the lid
  • bypass 6 with regulators 7 of the passage cross section provided the space of the acceleration connector of the pump 9 with the cylindrical Connect the flow channel of the device 12 as described above.
  • the pump 9, the device 12 and the heat accumulator 10 together form a recirculation circuit of a flowing medium, to which a person skilled in the art known type of thermal energy consumers can be connected, e.g. generally well-known batteries for water heating.
  • the exits of the openings are from FIG Bypass 6 in the flow channel of the device 12 e.g. at an angle of approximately -45 ° opposite the main stream, and the output in the same space from the gas nozzle 14 is e.g. at an angle of approximately + 40 ° aligned in the direction of flow of the main stream of the flowing medium.
  • the device for influencing the flow of a flowing medium as in various Embodiments of the inventive concept described above can be like follows can be used to generate controlled hydrodynamic cavitation.
  • the regulation of the cavitation in such a simplest embodiment is possible by changing the ratio of pressure and / or flow in the Main flow of the flowing medium and the pressure and / or flow of the flowing medium in the interference rays.
  • a calming gas in the Main stream of the flowing medium are blown in, causing the collapse of the cavities relieved, or another gas-like (re) agent to saturate the flowing Medium and / or to carry out chemical reactions in it.
  • the introduction of differently oriented interference beams using the 5 is particularly preferred when preparing cavitation of Emulsions and suspensions from the chemical composition after and the Properties according to different substances based on any liquid Dispersant used to form the main stream of the flowing medium become.
  • the additional acceleration of the flowing medium in the nozzle (see Fig. 6) is used more effective conversion of the kinetic energy of the liquid into thermal energy, and the use of the bypass connection 6 (in particular) with the regulators 7 of their passage cross section and, accordingly, the consumption of the flowing medium for Formation of the interference rays allows an effective influence on the formation of Cavities in the main stream.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Physical Water Treatments (AREA)
EP97933984A 1997-03-24 1997-05-08 Dispositif pour influencer l'ecoulement d'un fluide Withdrawn EP1203888A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
UA97031332 1997-03-24
UA97031332A UA25852C2 (uk) 1997-03-24 1997-03-24 Пристрій для діяhhя hа потік плиhhого середовища
PCT/UA1997/000003 WO1998042987A1 (fr) 1997-03-24 1997-05-08 Dispositif pour influencer l'ecoulement d'un fluide

Publications (2)

Publication Number Publication Date
EP1203888A1 true EP1203888A1 (fr) 2002-05-08
EP1203888A4 EP1203888A4 (fr) 2003-01-22

Family

ID=21689180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97933984A Withdrawn EP1203888A4 (fr) 1997-03-24 1997-05-08 Dispositif pour influencer l'ecoulement d'un fluide

Country Status (5)

Country Link
EP (1) EP1203888A4 (fr)
AU (1) AU3715297A (fr)
RU (1) RU2139454C1 (fr)
UA (1) UA25852C2 (fr)
WO (1) WO1998042987A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006046200A1 (fr) * 2004-10-29 2006-05-04 Koninklijke Philips Electronics N.V. Preparation de dispersions de particules en vue d'une utilisation comme agents de contraste en imagerie ultrasonore
WO2012052371A1 (fr) * 2010-10-19 2012-04-26 Voith Patent Gmbh Mélange de substances chimiques
GB2553002A (en) * 2016-08-19 2018-02-21 Cameron Int Corp Assembly for control and/or measurement of fluid flow

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002016783A1 (fr) * 2000-08-23 2002-02-28 Osipenko Sergey Borisovich Dispositif pour agir sur un flux de milieu fluide
RU2218491C2 (ru) * 2001-09-26 2003-12-10 Сергей Борисович Осипенко Устройство для гидродинамической обработки текучих сред
CA2511744C (fr) 2002-12-23 2010-10-26 Sergey Borisovich Osipenko Methode de disperser des graines de plantes et appareil approprie
FR2968582B1 (fr) * 2010-12-08 2018-05-25 Commissariat A L'energie Atomique Et Aux Energies Alternatives Procede et dispositif de generation de gouttelettes a faible vitesse de generation et a spectre granulometrique modulable
US10194680B2 (en) * 2013-03-13 2019-02-05 Millisecond Technologies Corp. Sterilization reactor and method patent application

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DE455957C (de) * 1926-09-21 1928-02-13 Heinrich Silberberg Vorrichtung zum Vermischen von Badewasser mit Luft
GB713064A (en) * 1950-04-14 1954-08-04 Holmes & Co Ltd W C Improvements in method and apparatus for the oxidation of solutions and/or suspensions of oxidisable solids by means of oxygen-containing gases
SU1315007A1 (ru) * 1985-07-29 1987-06-07 Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции Кавитационный реактор
US5004484A (en) * 1988-08-31 1991-04-02 Barrett, Haentjens & Co. Air stripping of liquids using high intensity turbulent mixer

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Publication number Priority date Publication date Assignee Title
DE455957C (de) * 1926-09-21 1928-02-13 Heinrich Silberberg Vorrichtung zum Vermischen von Badewasser mit Luft
GB713064A (en) * 1950-04-14 1954-08-04 Holmes & Co Ltd W C Improvements in method and apparatus for the oxidation of solutions and/or suspensions of oxidisable solids by means of oxygen-containing gases
SU1315007A1 (ru) * 1985-07-29 1987-06-07 Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции Кавитационный реактор
US5004484A (en) * 1988-08-31 1991-04-02 Barrett, Haentjens & Co. Air stripping of liquids using high intensity turbulent mixer

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Title
See also references of WO9842987A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006046200A1 (fr) * 2004-10-29 2006-05-04 Koninklijke Philips Electronics N.V. Preparation de dispersions de particules en vue d'une utilisation comme agents de contraste en imagerie ultrasonore
WO2012052371A1 (fr) * 2010-10-19 2012-04-26 Voith Patent Gmbh Mélange de substances chimiques
GB2553002A (en) * 2016-08-19 2018-02-21 Cameron Int Corp Assembly for control and/or measurement of fluid flow
US10337895B2 (en) 2016-08-19 2019-07-02 Cameron International Corporation Assembly for control and/or measurement of fluid flow
GB2553002B (en) * 2016-08-19 2020-12-30 Cameron Tech Ltd Assembly for control and/or measurement of fluid flow

Also Published As

Publication number Publication date
EP1203888A4 (fr) 2003-01-22
RU2139454C1 (ru) 1999-10-10
AU3715297A (en) 1998-10-20
UA25852C2 (uk) 1999-02-26
WO1998042987A1 (fr) 1998-10-01

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