EP3209887A1 - Pompe à jet - Google Patents

Pompe à jet

Info

Publication number
EP3209887A1
EP3209887A1 EP15781102.7A EP15781102A EP3209887A1 EP 3209887 A1 EP3209887 A1 EP 3209887A1 EP 15781102 A EP15781102 A EP 15781102A EP 3209887 A1 EP3209887 A1 EP 3209887A1
Authority
EP
European Patent Office
Prior art keywords
elements
sleeve
jet pump
line
section
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Withdrawn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
EP15781102.7A
Other languages
German (de)
English (en)
Inventor
Björn WILL
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.)
KSB SE and Co KGaA
Original Assignee
KSB AG
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 KSB AG filed Critical KSB AG
Publication of EP3209887A1 publication Critical patent/EP3209887A1/fr
Withdrawn legal-status Critical Current

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
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/24—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and 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
    • F04F5/42—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow characterised by the input flow of inducing fluid medium being radial or tangential to output flow
    • 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
    • F04F5/463—Arrangements of nozzles with provisions for mixing
    • 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 invention relates to a jet pump with a straight line section, to flow through with a suction medium, wherein a driving medium flows into the line section.
  • jet pumps the pumping action is generated by a driving medium, which sucks and accelerates a suction medium by pulse exchange.
  • This type of pump is very simple and requires no moving components. It is particularly robust and low maintenance and therefore versatile.
  • blowing media or suction media fluids of different states of matter can be used, for example, gas-liquid or liquid-liquid.
  • numerous jet pumps described in the prior art are constructed with a mixing chamber into which a drive nozzle projects centrally.
  • the mixing chamber has a connection via which a suction medium flows into the mixing chamber. Furthermore, the mixing chamber has an output.
  • the suction medium inlet and the mixing chamber outlet are often arranged in conventional jet pumps at an angle of 90 ° to each other, so that the suction medium is deflected and flows in an annular cross section around the propellant around in a mixing zone.
  • a jet pump is described for example in DE 713 255.
  • a liquid, which flows through a jacket housing, is used as the driving medium for a jet pump.
  • the jet pump has a chamber into which a drive nozzle projects centrally.
  • the chamber has a connection for a suction line and can suck in a gas.
  • the jet pump used has a mixing chamber with a connection for an air suction pipe.
  • a centrifugal pump water is conveyed through a central projecting into the chamber motive nozzle.
  • a jet pump is located at the end of a centrally located in a tunnel pipe pressure line. At its lower end, the pressure line has a drive nozzle, which opens into a catching nozzle.
  • EP 365 964 A1 shows a jet pipe with a line for supplying a suction medium.
  • a section is formed as a ring. It has a feed pipe which communicates with a water pipe. Further, exit nozzles are provided whose axes are aligned so that they have a common point of intersection on the axis of the steel pipe.
  • DE 4446 935 C2 relates to a multi-stage high-pressure jet pipe for wet-mechanical treatment of granular materials.
  • This has an inlet-side suction inlet, an outlet-side outlet flow and a plurality of segment pipe sections.
  • the segment pipe sections each comprise an annular chamber which can be connected to a high pressure fluid source and which carries a circumferential nozzle ring with a plurality of nozzles arranged distributed on the circumferential side for feeding a fluid jet stream in the form of a conical veil into the pipe interior of the respective subsequent segment pipe section.
  • DE 21 50 711 A1 a water jet pump is described.
  • This consists of a mixing nozzle, a high-pressure water inlet nozzle, an intake and a nozzle pipe connected to the mixing nozzle.
  • the high-pressure water which is introduced under pressure into the inlet connection, enters the mixing nozzle through outlet channels oriented in the direction of a conical jacket with an upstream distributor ring channel.
  • the axes of the outlet channels point to a cone tip located inside the nozzle tube.
  • DE 603 14 434 T2 shows a turbomachine including a housing defining a passage providing an inlet and an outlet.
  • the passage has a constant circular cross-section.
  • the inlet is formed at the forward end of a projection which extends into the housing and defines, outside thereof, a manifold for the introduction of a transport fluid.
  • the distribution channel is provided with an inlet.
  • the projection defines a part of the passage inside thereof.
  • the end of the projection is remote from the inlet and tapers on its outer surface defining an annular nozzle between it and a correspondingly tapered portion of the inner wall of the housing.
  • the nozzle is in flow communication with the distribution channel.
  • DD 153 905 A5 concerns a multistage jet pump for conveying bulk materials.
  • the jet pump is composed of at least two rows of ring-shaped tubes connected in series.
  • the jet pipes are interconnected such that the chambers of the individual preceding jet pipes, which are designed as a mixing chamber or diffuser, form the suction chamber
  • the object of the invention is to provide a jet pump with a straight line section through which a suction medium flows, wherein a driving medium is introduced into this line section so that the jet pump has the highest possible efficiency and reduces the risk of clogging, especially in particle-containing fluids becomes. Furthermore, the jet pump should be used for different media. This object is achieved by a jet pump with the features of claim 1. Preferred variants are set forth in the subclaims.
  • the line section comprises a line section which has bores.
  • sleeve-like elements for supplying the propellant medium are arranged in the holes.
  • the sleeve-like elements preferably protrude into the conduit section.
  • no chamber is used but a straight line piece, which is adapted by its shape flow optimal to the sleeve-shaped elements.
  • the pipe section has a region with a circular flow cross section. Furthermore, in contrast to conventional jet pumps no centrally projecting motive nozzle is used. Rather, the line piece according to the invention on its inner lateral surface openings. Sleeve-like elements for supplying the propellant are arranged in the openings. These protrude into the pipe section.
  • these elements are executed at least partially hollow cylindrical. Through the interior of the hollow cylinder-like elements, the driving medium flows.
  • the elements may be nozzle-like at one end.
  • the sleeve-like elements are arranged rotationally symmetrical over the circumference in a flow space of the line piece.
  • a construction is provided in which the suction medium flows in a circular cross section and the blowing medium is supplied at the outer edges of this circular cross section.
  • the sleeve-shaped elements are advantageously integrated into the housing so that flow losses are minimized.
  • the driving medium is not supplied by a nozzle arranged centrally in a mixing chamber. leads, but arranged on an inner lateral surface Hüisen shame elements. This leads to the fact that the suction medium does not flow around a central propellant jet as in many conventional jet pumps as a ring cross section and then mixed, but that according to the invention, the suction medium flows in a central circular cross section through the pipe section and at the outer edges of this circular cross section via sleeve-like elements in the driving medium the central Saugmediumstrahl is injected.
  • the construction according to the invention significantly reduces the risk of clogging.
  • particle-containing suction media can be conveyed particularly efficiently without causing blockages.
  • the jet pump according to the invention has a significantly higher efficiency.
  • There are several drive nozzles along the circumference of the inner circumferential surface of the line piece is used, instead of only a central drive nozzle according to many conventional constructions. This leads to a considerable improvement of the momentum exchange.
  • the sleeve-like elements are nozzle-like at one end.
  • the sleeve-like elements initially have a circular flow cross section, which then tapers conically to the outlet opening.
  • the sleeve-like elements are integrally formed. These may, for example, be turned or cast parts.
  • the line piece is integrally formed in an advantageous variant of the invention.
  • the mean flow axes of the sleeve-like elements are at an angle to the mean flow axis of the sleeve formed piece of less than 90 °, preferably less than 60 ° and in particular less than 45 °.
  • connection between the sleeve-like elements and the line piece takes place in such a way that no, or only very small, dead water regions form downstream of the sleeve-like elements projecting into the line piece. This is accomplished by tapering the inner surface of the tubing downstream (e.g., at the same angle as the sleeve-like members) before meeting with the subsequent tubing. As a result, a significant increase in the efficiency is achieved.
  • the adjoining the sleeve-like elements space of the line section preferably has an area in which the flow cross-section decreases.
  • the flow cross section reaches a minimum cross section and then widens again in the form of a diffuser.
  • the second line piece adjoins the first line piece, which is formed so that the central flow axis of the first line piece forms a common straight central flow axis of the entire line section with the middle flow axis of the second line piece.
  • the second line section forms the mixing zone for the suction medium with the driving medium.
  • the second line piece may also be integrally formed.
  • the axes of the sleeve-like elements are aligned with a common point on the central flow axis of the line section.
  • the emerging from the nozzles of the sleeve-like elements driving medium is thus directed at the nozzle exit to a common point, which lies on the central flow axis.
  • the sleeve-like elements are arranged axisymmetric to each other.
  • the holes in the line piece are formed so that the openings are arranged mirror-symmetrically to each other.
  • the openings are preferably designed as bores which extend from an inner circumferential surface of the pipe section in the direction of an end face of the pipe section. Since the sleeve-like elements are aligned at an angle of less than 90 ° to the central flow axis of the pipe section, this leads to elliptical openings in the inner circumferential surface of the pipe section.
  • the line piece is preferably a hollow-cylindrical body which has two opposite end faces. In a preferred embodiment of the invention, an inlet funnel is formed on this hollow-cylindrical body.
  • the sleeve-like elements preferably have a thickening at one end. This thickening forms a stop for the sleeve-like elements. As a result, the elements are positioned during insertion into the holes of the pipe section.
  • the sleeve-like elements have an external thread and an internal thread is provided in the bores of the conduit element.
  • the sleeve-like elements can be screwed into the pipe section.
  • the conduit element can be made of one piece, so that the function of the sleeve-shaped body is taken over by a corresponding design of the conduit element.
  • the sleeve-like elements are variably arranged in their position in the holes.
  • the sleeve-like elements may protrude more or less into the pipe section.
  • the elements are aligned specifically for the respective media. This possibility for fluidic optimization leads to a high efficiency, wherein Blockages are avoided by a targeted adjustment of the position of the elements to the respective media.
  • the jet pump can be adapted to different media.
  • the sleeve-like elements protrude further or less far into the line piece in the case of particularly particle-containing media.
  • FIG. 1 shows a perspective sectional view of a jet pump
  • Figure 2a is a schematic axial sectional view with flow axes
  • Figure 2b is a radial sectional view taken along the A-A line of Figure 2a.
  • Figure 1 shows a jet pump with a line piece 1.
  • the line piece 1 is part of a straight line section, which is composed of several parts.
  • the line section comprises a line section 2, which forms the mixing zone.
  • the two line pieces 1, 2 form a straight line section.
  • the suction medium flows with a circular flow cross-section while the propellant is injected via sleeve-like elements.
  • 1 openings are provided on the inner circumferential surface of the line piece, through which project the sleeve-like elements 3 in the line section.
  • four sleeve-like elements 3 are arranged opposite to each other, three of which can be seen in Fig. 1.
  • Respectively positioned sleeve-like elements 3 are arranged mirror-symmetrically to each other.
  • the sleeve-like elements 3 are tubular elements which taper conically at their tips. The tip of the elements 3 forms a nozzle-like opening through which the driving medium flows.
  • the sleeve-like elements 3 are integrally formed.
  • bores which extend from an inner circumferential surface to an end face of the pipe section 1, are introduced in the line piece 1, which is likewise designed in one piece.
  • the line piece 1 comprises a hollow cylindrical part which has a front end face and a rear face face.
  • the sleeve-like elements 3 each have a thickening 5, which forms a stop when inserted into the holes of the pipe section 1.
  • a rod 6 is guided in the embodiment.
  • a fastening element 7 is attached on a front side of the pipe section 1.
  • the line piece 1 and the line piece 2 can be braced against each other via the fastening element 7.
  • an external thread is applied to the rod 6.
  • the executed as a screw fastener 7 is tightened.
  • the clamping ring 8 presses against a stop of the line piece 2 and pressed in this way the line piece 2 against the line piece.
  • the line piece 1 has at the facing to the line piece 2 end face an annular recess into which an annular projection of the line piece 2 engages.
  • a sealing of the sleeve-like elements 3 to the flow interior is accomplished by density elements 9.
  • the sealing elements 9 are designed as O-rings.
  • a sealing of the two intermeshing pipe sections 1, 2 is achieved by means of a sealing element 10, which is also designed as O-rings.
  • a seal the Ichssefements 2 and the clamping ring 8 is accomplished with a density element 11, which is also designed as an O-ring.
  • the cross-sectional area of the inlet funnel tapers in the flow direction.
  • the pipe section 1 has a circular cross section with a constant diameter.
  • openings are introduced, through which the sleeve-like elements 3 protrude.
  • the flow cross-section initially tapers and then widens again in a diffuser-like manner.
  • the mean flow axis 13 of the sleeve-like elements 3 is less than 90 °, preferably less than 60 °, in particular less than 90 ° with respect to the mean flow axis 4 of the line pieces 2, 2 45 ° are arranged.
  • the angle ⁇ between the central flow axis 4 of the pipe section 1 and the central flow axes 13 of the sleeve-like elements 3 is less than 30 °.
  • the central flow axes 13 of the sleeve-like elements 3 are all aligned with a point 14. This point 14 is located on the central flow axis 4 of the line section which is formed by the line piece 2 and thus in the mixing zone.
  • FIG. 2b shows a radial section along the A-A line according to FIG. 2a.
  • the suction medium in the line element 1 forms a circular flow cross section 15.
  • the drive medium is then fed from outside into the central flow of the suction medium via the sleeve-like elements 3

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

Pompe à jet pourvue d'un segment de conduit droit destiné à être traversé par une substance aspirée. Un milieu propulseur circule dans ce segment de conduit. Ledit segment de conduit comporte une pièce de conduit (1) présentant des trous. Des éléments (3) de type douille sont situés dans les trous et servent à introduire le milieu propulseur.
EP15781102.7A 2014-10-20 2015-10-15 Pompe à jet Withdrawn EP3209887A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014221203.0A DE102014221203A1 (de) 2014-10-20 2014-10-20 Strahlpumpe
PCT/EP2015/073875 WO2016062610A1 (fr) 2014-10-20 2015-10-15 Pompe à jet

Publications (1)

Publication Number Publication Date
EP3209887A1 true EP3209887A1 (fr) 2017-08-30

Family

ID=54325553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15781102.7A Withdrawn EP3209887A1 (fr) 2014-10-20 2015-10-15 Pompe à jet

Country Status (4)

Country Link
EP (1) EP3209887A1 (fr)
CN (1) CN107076170A (fr)
DE (1) DE102014221203A1 (fr)
WO (1) WO2016062610A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108916129B (zh) * 2018-06-26 2019-12-03 湖南人文科技学院 一种高效自振气力提升泵
DE102018121341B4 (de) * 2018-08-31 2020-04-30 Yassin Osman Bellaede Weyer Strahlpumpe
AT523130B1 (de) * 2019-11-08 2022-10-15 Pregenzer Bruno Dentalabscheider
DE102021118546A1 (de) * 2021-07-19 2023-01-19 J. Schmalz Gmbh Unterdruckerzeugungsvorrichtung und Sauggreifer

Family Cites Families (15)

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DE713255C (de) 1939-06-27 1941-11-04 Klein Schanzlin & Becker Akt G Einfach wirkende Hochvakuumpumpe
US2673125A (en) * 1949-03-30 1954-03-23 Kennedy Van Saun Mfg & Eng Means for handling and transporting pulverulent, granular, and like material
DE1503693A1 (de) * 1966-01-18 1970-09-17 Heinz Hoelter Strahlgeblaese,insbesondere zur Entstaubung in untertaegigen Grubenbetrieben
US3694107A (en) * 1970-11-19 1972-09-26 Nash Engineering Co Ejector apparatus and method of utilizing same
DE2150711C3 (de) 1971-10-12 1978-08-24 Woma Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg Verwendung einer Wasserstrahlpumpe als Tiefsauger
SU905517A1 (ru) * 1976-01-15 1982-02-15 Государственный Научно-Исследовательский Энергетический Институт Им.Г.М.Кржижановского Многоструйный инжектор-конденсатор паротурбинной установки
PL130954B1 (en) 1979-10-31 1984-09-29 Inst Przemyslu Wiazacych Multi-stage jet pump
US4400138A (en) * 1981-10-19 1983-08-23 Baer William F Multiple jet eductor
DE3704935A1 (de) 1987-02-17 1988-08-25 Klein Schanzlin & Becker Ag Verfahren und einrichtungen zur nutzung der in einem thermalbrunnen enthaltenen erdwaerme
DE3836661C1 (fr) 1988-10-27 1990-04-19 Kloeckner Oecotec Gmbh, 4100 Duisburg, De
DE4446935C2 (de) 1994-12-28 1996-12-12 Edmund Prof Dr Wax Mehrstufiges Hochdruck-Strahlrohr
DE19955424C2 (de) 1999-11-18 2003-03-27 Ksb Ag Einrichtung und Verfahren zur Reinigung eines der Aufnahme von verunreinigtem Wasser dienenden Behälters
ATE364794T1 (de) 2002-10-11 2007-07-15 Pursuit Dynamics Plc Strahlpumpe
CN103174686A (zh) * 2013-02-21 2013-06-26 北京朗新明环保科技有限公司 射流气提装置
CN203476846U (zh) * 2013-09-26 2014-03-12 山东宜美科节能服务有限责任公司 一种新型蒸汽喷射器

Non-Patent Citations (2)

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Title
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See also references of WO2016062610A1 *

Also Published As

Publication number Publication date
DE102014221203A1 (de) 2016-05-04
WO2016062610A1 (fr) 2016-04-28
CN107076170A (zh) 2017-08-18

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