WO2004007971A1 - Tiquid/gas jet device - Google Patents

Tiquid/gas jet device Download PDF

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Publication number
WO2004007971A1
WO2004007971A1 PCT/RU2003/000029 RU0300029W WO2004007971A1 WO 2004007971 A1 WO2004007971 A1 WO 2004007971A1 RU 0300029 W RU0300029 W RU 0300029W WO 2004007971 A1 WO2004007971 A1 WO 2004007971A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixing chamber
nozzles
primary
nozzle
primary mixing
Prior art date
Application number
PCT/RU2003/000029
Other languages
French (fr)
Inventor
Genrikh Falkevich
Andrei Beliaev
Leonid Vilenskiy
Boris Zhuravlev
Original Assignee
Genrikh Falkevich
Andrei Beliaev
Leonid Vilenskiy
Boris Zhuravlev
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 Genrikh Falkevich, Andrei Beliaev, Leonid Vilenskiy, Boris Zhuravlev filed Critical Genrikh Falkevich
Priority to AU2003208683A priority Critical patent/AU2003208683A1/en
Publication of WO2004007971A1 publication Critical patent/WO2004007971A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/04—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/466—Arrangements of nozzles with a plurality of nozzles arranged in parallel

Definitions

  • the present invention relates to hydro- and gasodynamic equipment, in particular, to ejector devices, and can be used in heat power, oil processing and chemical industry, as well as in other industries where liquids should be mixed with gases.
  • liquid/gas jet device (RU Patent 2107841 F 04 F 5/02, 1998) that comprises an active liquid nozzle, a mixing chamber and a diffuser, wherein the minimum mixing chamber section area is 0.1 to 7.98 time the minimum section area of said liquid nozzle.
  • the efficiency of said jet device is low due to the low mixing of the passive gas and the active liquid flows.
  • liquid/gas jet device (RU Patent 2113629 F 04 F 5/02, 1998) that comprises an active liquid media feeding nozzle and a mixing chamber, wherein said active liquid media feeding nozzle has a central and a peripheral ring shafts for active media feeding, and the total outlet section area of the active media feeding nozzle is determined by the ratio of the central nozzle shaft outlet section and the minimum mixing chamber section.
  • the efficiency of said jet device is low due to the low mixing of the passive gas and the active liquid flows.
  • liquid/gas ejector (US Patent 2382391 F 04 F 5/02, 1945) that comprises a distribution chamber with nozzles, an inlet chamber, a mixing chamber and a discharge chamber, wherein each chamber is coaxial with its appropriate nozzle.
  • the efficiency of said jet device is low due to the low mixing of the passive gas and the active liquid flows.
  • liquid/gas jet device (US Patent 2632597 F 04 F 5/02, 1953).
  • Said device comprises a casing with one or more nozzles and the same number of diffusers and mixing chambers.
  • the efficiency of said jet device is low due to the low mixing of the passive gas and the active liquid flows.
  • the object of the present invention is to increase the efficiency of the liquid/gas jet device by optimizing the mixing of Hie gaseous and liquid media in the flow section of the jet device.
  • the present object can be achieved by using a liquid/gas jet device that comprises a set of nozzles with at least one nozzle and at least one primary mixing chamber located coaxially in front of, and at least partially around each of said nozzles, a secondary mixing chamber the inlet of which is located in front of the outlets of the primary mixing chambers and the outlet is combined with the diffuser inlet, and an inlet chamber that contains the nozzles of said set of nozzles, the primary mixing chambers and the inlet of the secondary mixing chamber.
  • the set of nozzles comprises at least two nozzles that may be installed either parallel or not parallel to each other and no coaxially with the secondary mixing chamber.
  • the outlet of the nozzle is spaced from the outlet of the primary mixing chamber by a distance not greater than 100 diameters of the nozzle outlet.
  • the primary mixing chamber is usually a cylinder, a cone or a combination thereof.
  • the minimum primary mixing chamber section area is 1-15 minimum nozzle section areas.
  • the ratio between the minimum secondary mixing chamber section area and the total area of the minimum primary mixing chambers is 1-300, and the ratio of the lengths of the primary and secondary mixing chambers to their minimum sections is 0.1 to 500.
  • the set of nozzles has a common base on which at least one but, preferably, two nozzles are installed, wherein the active (ejecting) high-pressure medium is fed to the rear surface of the base.
  • said device may additionally comprise at least one secondary mixing chamber.
  • the outlets of part of the primary mixing chambers are connected to one secondary mixing chamber, and the outlets of the other primary mixing chambers are connected to the other mixing chamber.
  • the device may additionally contain at least one diffuser connected to the additional secondary mixing chamber.
  • the mixing of the active (ejecting) and the passive (ejected) media greatly affects the efficiency of the liquid/gas jet device. Therefore, in order to improve the mixing of the media, two types of mixing chambers are used in the ejector, i.e. the primary mixing chamber that is cocentric with each nozzle of the set of nozzles and the secondary mixing chamber to which all the jets from the primary mixing chambers are directed and where the gas and the liquid are finally mixed.
  • the primary mixing chambers are used for preliminary mixing of the gas and the liquid and the formation of vortex zones and turbulization of the liquid jet with gas.
  • the jet is more intensively split into separate jets after the primary mixing chambers and entraps larger amounts of the ejected gas as compared with single mixing chamber ejectors.
  • the turbulization can be further enhanced by using two or more primary mixing chambers with nozzles and by positioning the chambers not parallel to the secondary mixing chamber axis.
  • ejected gas will more readily penetrate to the central jets between tubes of the primary chambers because the impedance coefficient for lateral circumvention of solid cylinders by gas is several times lower than for the impedance coefficient for similar circumvention of liquid jets by gas.
  • the present device operates as follows: jets of the active liquid from each nozzle (2) of the set of nozzles (1) is directed to the primary mixing chamber (3) where it is preliminarily split and mixed with the passive gas fed from the inlet chamber (6). After the outlet of the primary chamber the jet is completely split and the passive gas is finally entrapped. After that the liquid/gas jet is fed to the secondary mixing chamber (4) where the jet velocities are equalized and the pressure is increased. From the secondary mixing chamber the jet is fed to the diffuser (5) where the pressure is further increased.
  • the use of the present invention allows one to increase the efficiency in comparison with the closest counterparts by 8-

Abstract

The present invention relates to hydro- and gasodynamic equipment, in particular, to ejector devices, and can be used in heat power, oil processing and chemical industry, as well as in other industries where liquids should be mixed with gases. Liquid/gas jet device comprises a set of nozzles (1) , a nozzle (2), a primary mixing chamber (3), a secondary mixing chamber (4), a diffuser (5) and an inlet chamber (6).

Description

Liquid / Gas Jet Device
The present invention relates to hydro- and gasodynamic equipment, in particular, to ejector devices, and can be used in heat power, oil processing and chemical industry, as well as in other industries where liquids should be mixed with gases.
Known is liquid/gas jet device (RU Patent 2107841 F 04 F 5/02, 1998) that comprises an active liquid nozzle, a mixing chamber and a diffuser, wherein the minimum mixing chamber section area is 0.1 to 7.98 time the minimum section area of said liquid nozzle.
The efficiency of said jet device is low due to the low mixing of the passive gas and the active liquid flows.
Known also is liquid/gas jet device (RU Patent 2113629 F 04 F 5/02, 1998) that comprises an active liquid media feeding nozzle and a mixing chamber, wherein said active liquid media feeding nozzle has a central and a peripheral ring shafts for active media feeding, and the total outlet section area of the active media feeding nozzle is determined by the ratio of the central nozzle shaft outlet section and the minimum mixing chamber section.
The efficiency of said jet device is low due to the low mixing of the passive gas and the active liquid flows.
Known also is liquid/gas ejector (US Patent 2382391 F 04 F 5/02, 1945) that comprises a distribution chamber with nozzles, an inlet chamber, a mixing chamber and a discharge chamber, wherein each chamber is coaxial with its appropriate nozzle. The efficiency of said jet device is low due to the low mixing of the passive gas and the active liquid flows.
The closest counterpart of the device suggested herein is liquid/gas jet device (US Patent 2632597 F 04 F 5/02, 1953). Said device comprises a casing with one or more nozzles and the same number of diffusers and mixing chambers.
The efficiency of said jet device is low due to the low mixing of the passive gas and the active liquid flows.
Studies have shown that the above liquid jet devices do not provide for the required output and efficiency due to the low mixing of the media (active and passive).
Therefore the object of the present invention is to increase the efficiency of the liquid/gas jet device by optimizing the mixing of Hie gaseous and liquid media in the flow section of the jet device.
The present object can be achieved by using a liquid/gas jet device that comprises a set of nozzles with at least one nozzle and at least one primary mixing chamber located coaxially in front of, and at least partially around each of said nozzles, a secondary mixing chamber the inlet of which is located in front of the outlets of the primary mixing chambers and the outlet is combined with the diffuser inlet, and an inlet chamber that contains the nozzles of said set of nozzles, the primary mixing chambers and the inlet of the secondary mixing chamber. Preferably, the set of nozzles comprises at least two nozzles that may be installed either parallel or not parallel to each other and no coaxially with the secondary mixing chamber. Usually the outlet of the nozzle is spaced from the outlet of the primary mixing chamber by a distance not greater than 100 diameters of the nozzle outlet. The primary mixing chamber is usually a cylinder, a cone or a combination thereof. Usually, the minimum primary mixing chamber section area is 1-15 minimum nozzle section areas. Preferably, the ratio between the minimum secondary mixing chamber section area and the total area of the minimum primary mixing chambers is 1-300, and the ratio of the lengths of the primary and secondary mixing chambers to their minimum sections is 0.1 to 500. The set of nozzles has a common base on which at least one but, preferably, two nozzles are installed, wherein the active (ejecting) high-pressure medium is fed to the rear surface of the base. Moreover, said device may additionally comprise at least one secondary mixing chamber. In that case the outlets of part of the primary mixing chambers are connected to one secondary mixing chamber, and the outlets of the other primary mixing chambers are connected to the other mixing chamber. The device may additionally contain at least one diffuser connected to the additional secondary mixing chamber.
Studies have shown that the mixing of the active (ejecting) and the passive (ejected) media greatly affects the efficiency of the liquid/gas jet device. Therefore, in order to improve the mixing of the media, two types of mixing chambers are used in the ejector, i.e. the primary mixing chamber that is cocentric with each nozzle of the set of nozzles and the secondary mixing chamber to which all the jets from the primary mixing chambers are directed and where the gas and the liquid are finally mixed. The primary mixing chambers are used for preliminary mixing of the gas and the liquid and the formation of vortex zones and turbulization of the liquid jet with gas. As a result the jet is more intensively split into separate jets after the primary mixing chambers and entraps larger amounts of the ejected gas as compared with single mixing chamber ejectors. The turbulization can be further enhanced by using two or more primary mixing chambers with nozzles and by positioning the chambers not parallel to the secondary mixing chamber axis. Moreover, it is well known that ejected gas will more readily penetrate to the central jets between tubes of the primary chambers because the impedance coefficient for lateral circumvention of solid cylinders by gas is several times lower than for the impedance coefficient for similar circumvention of liquid jets by gas.
The basic embodiment of the present invention can be illustrated by the figure attached hereto, wherein the following notations are used: set of nozzles 91), nozzle (2), primary mixing chamber (3), secondary mixing chamber (4), diffuser (5) and inlet chamber (6).
The present device operates as follows: jets of the active liquid from each nozzle (2) of the set of nozzles (1) is directed to the primary mixing chamber (3) where it is preliminarily split and mixed with the passive gas fed from the inlet chamber (6). After the outlet of the primary chamber the jet is completely split and the passive gas is finally entrapped. After that the liquid/gas jet is fed to the secondary mixing chamber (4) where the jet velocities are equalized and the pressure is increased. From the secondary mixing chamber the jet is fed to the diffuser (5) where the pressure is further increased. The use of the present invention allows one to increase the efficiency in comparison with the closest counterparts by 8-
12%.

Claims

What is claimed is a:
1. Liquid/gas jet device that comprises a set of nozzles with at least one nozzle and at least one primary mixing chamber located coaxially in front of, and at least partially around each of said nozzles, a secondary mixing chamber the inlet of which is located in front of the outlets of the primary mixing chambers and the outlet is combined with the diffuser inlet, and an inlet chamber that contains the nozzles of said set of nozzles, the primary mixing chambers and the inlet of the secondary mixing chamber.
2. Device according to p. 1, wherein said primary mixing chamber is coaxial with the nozzle.
3. Device according to pp. 1 or 2, wherein said set of nozzles comprises at least two nozzles.
4. Device according to p. 3, wherein said nozzles are not parallel to one another.
5. Device according to p. 3, wherein said nozzles are parallel to one another.
6. Device according to any of pp. 1 through 5, wherein said nozzles are not parallel to the axis to the secondary mixing chamber.
7. Device according to any of pp. 1 through 6, wherein said nozzle outlet is spaced from the outlet of the primary mixing chamber by a distance not greater than 100 diameters of the nozzle outlet.
8. Device according to any of pp. 1 through 7, wherein said primary mixing chamber is a cylinder, a cone or a combination thereof.
9. Device according to any of pp. 1 through 8, wherein said minimum primary mixing chamber section area is 1-15 minimum nozzle section areas.
10. Device according to any of pp. 1 through 9, wherein said ratio between the minimum secondary mixing chamber section area and the total area of the minimum primary mixing chambers is
1-300.
11. Device according to any of pp. 1 through 10, wherein said ratio of the lengths of the primary and secondary mixing chambers to their minimum sections is 0.1 to 500.
12.Device according to any of pp. 1 through 11, wherein said primary mixing chamber is installed so that to entrap the jets from at least two nozzles.
13. Device according to any of pp. 1 through 12, wherein said device further comprises at least one secondary mixing chamber.
14.Device according to p. 13, wherein said device further comprises at least one diffuser.
PCT/RU2003/000029 2002-07-15 2003-02-03 Tiquid/gas jet device WO2004007971A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003208683A AU2003208683A1 (en) 2002-07-15 2003-02-03 Tiquid/gas jet device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2002118716A RU2205994C1 (en) 2002-07-15 2002-07-15 Liquid-gas device
RU2002118716 2002-07-15

Publications (1)

Publication Number Publication Date
WO2004007971A1 true WO2004007971A1 (en) 2004-01-22

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AU (1) AU2003208683A1 (en)
RU (1) RU2205994C1 (en)
WO (1) WO2004007971A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009056118A2 (en) * 2007-11-02 2009-05-07 Rerum Cognitio Forschungszentrum Gmbh Quasi isothermal pressure boosting method for various working fluids

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2317450C1 (en) * 2006-04-13 2008-02-20 Генрих Семенович Фалькевич Liquid-gas fluidic apparatus
RU2455532C1 (en) * 2011-01-20 2012-07-10 Виталий Васильевич Сальков Accelerating device
RU2472976C2 (en) * 2011-04-08 2013-01-20 Генрих Семенович Фалькевич Liquid-gas jet device
RU170134U1 (en) * 2016-01-25 2017-04-14 Дмитрий Николаевич Шаманов MULTI-INJECT UNIT

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382391A (en) * 1944-01-24 1945-08-14 Berman Philip Eductor
US2632597A (en) * 1949-11-19 1953-03-24 Hydrojet Corp Jet pump
RU2107841C1 (en) * 1997-04-21 1998-03-27 Сергей Анатольевич Попов Liquid-gas device
RU2113629C1 (en) * 1997-01-22 1998-06-20 Сергей Анатольевич Попов Liquid-gas jet device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382391A (en) * 1944-01-24 1945-08-14 Berman Philip Eductor
US2632597A (en) * 1949-11-19 1953-03-24 Hydrojet Corp Jet pump
RU2113629C1 (en) * 1997-01-22 1998-06-20 Сергей Анатольевич Попов Liquid-gas jet device
RU2107841C1 (en) * 1997-04-21 1998-03-27 Сергей Анатольевич Попов Liquid-gas device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009056118A2 (en) * 2007-11-02 2009-05-07 Rerum Cognitio Forschungszentrum Gmbh Quasi isothermal pressure boosting method for various working fluids
WO2009056118A3 (en) * 2007-11-02 2011-06-03 Rerum Cognitio Forschungszentrum Gmbh Quasi isothermal pressure boosting method for various working fluids

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Publication number Publication date
AU2003208683A1 (en) 2004-02-02
RU2205994C1 (en) 2003-06-10

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