EP2171279B1 - Ensemble de pompes à amorçage automatique - Google Patents

Ensemble de pompes à amorçage automatique Download PDF

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Publication number
EP2171279B1
EP2171279B1 EP08784638.2A EP08784638A EP2171279B1 EP 2171279 B1 EP2171279 B1 EP 2171279B1 EP 08784638 A EP08784638 A EP 08784638A EP 2171279 B1 EP2171279 B1 EP 2171279B1
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EP
European Patent Office
Prior art keywords
pump
pressure
connection point
pump assembly
suction
Prior art date
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Active
Application number
EP08784638.2A
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German (de)
English (en)
Other versions
EP2171279A2 (fr
Inventor
Stefan Hackert
Markus Pawlik
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GEA Tuchenhagen GmbH
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GEA Tuchenhagen GmbH
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Application filed by GEA Tuchenhagen GmbH filed Critical GEA Tuchenhagen GmbH
Priority to PL08784638T priority Critical patent/PL2171279T3/pl
Publication of EP2171279A2 publication Critical patent/EP2171279A2/fr
Application granted granted Critical
Publication of EP2171279B1 publication Critical patent/EP2171279B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/041—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump having evacuating action

Definitions

  • the invention relates to a self-priming pump aggregation, which is a series connection of working as a rotary positive displacement pump liquid ring pump and a normal suction centrifugal pump, wherein the centrifugal pump has a rotatably mounted shaft with an impeller in a provided with an inlet opening and a pressure port housing, one of a housing shell of the Displacement pump limited internal space via the inlet opening with a suction-side interior of the centrifugal pump and in the housing shell, a screw conveyor is mounted, which is fixed to the shaft through the impeller and the housing shell engaging shaft, and wherein a return line is provided, the pressure-side region the centrifugal pump connects directly or indirectly with the interior.
  • the inner surfaces of the pump aggregation which are in direct contact with the liquid, meet the hygienic requirements in the fields of food and beverage, pharmaceutical and biotechnology process technology in terms of design and surface quality by smooth and rounded and, are executed without holes, cracks, small elevations, sharp edges and dead spaces.
  • a related pump aggregation of normal suction centrifugal pump and liquid ring pump is in the GB 601 516 A or the US 5,711,789 A described. From the GB 601516 A, it is known to connect a device supplying the liquid ring pump with liquid via a switchable liquid return line to the suction nozzle of the centrifugal pump.
  • One in the DE 79.24 976 U1 described device for improving the Kavitations s of centrifugal pumps is characterized in that equipped with suction manifold centrifugal pumps enters a pressure side removed fluid flow in the tangential direction to the suction line and in the direction of rotation of the pump impeller in the suction-side flow space through a plurality of circumferentially distributed openings.
  • the feed of the delivery liquid flow is automatically preferably by means of a arranged in the return line between the pressure and suction sides known control valve at the beginning of part-load operation of the centrifugal pump.
  • centrifugal pump centrifugal pump, centrifugal pump
  • a housing containing an impeller having an axial inlet leading to the impeller and a liquid outlet
  • a device for pressure release of accumulating in the housing leakage and with the pressure-releasing leakage liquid from the housing dissipating and the inlet-feeding return line In order to return the leakage liquid into the pump inlet in such a way that the least possible disturbance of the laminar inlet flow takes place, a stabilizing chamber which reduces the velocity of the leakage liquid is provided in the housing in the vicinity of the inlet.
  • the latter has an external inlet for connection to the return line and leads from the stabilization chamber a frusto-conical passage in the immediate vicinity of the impeller inlet.
  • the passage is oriented so that it is the leakage fluid With a small radial component so in the inlet initiates that the disturbance of the incoming flow is kept low.
  • a self-priming pump aggregation of the generic type is in the EP 1 191228 A2 described.
  • pump aggregation necessary for the aspiration of a liquid evacuation of the suction-side portion of the normal-suction centrifugal pump, as for example from the DE 10314 425 A1 is known, accomplished by one of the centrifugal pump upstream rotary displacement pump.
  • the rotating positive displacement pump embodied as a so-called liquid ring pump is, with sufficient liquid charge in its housing, capable of delivering gas and thus can evacuate an upstream process arrangement and suck and convey liquid or a two-phase flow consisting of liquid and gas.
  • the centrifugal pump essentially takes over the delivery of the liquid or possibly within limits of the two-phase flow in accordance with its delivery characteristic influenced by the flow losses in the upstream positive displacement pump.
  • the positive displacement pump always requires the mentioned adequate liquid reservoir for permanent operational readiness before any necessary evacuation of the suction side connected process arrangement, so that the delivery chamber formed by its screw conveyor can ensure the necessary gas transport if necessary.
  • This liquid template is in addition to the supply via the suction line of the pump aggregation also fed and maintained by a in the EP 1 191 228 A2 described return line for liquid, which establishes a connection between the discharge nozzle of the centrifugal pump on the one hand and on the other hand, the housing or the suction nozzle of the positive displacement pump or connected to the latter suction line.
  • the fundamental inventive solution idea is to connect the return line Zentrifugalpumpen utility via a first connection point to a pressure-side interior within the housing of the centrifugal pump, which, seen in the flow direction, downstream of the impeller and thus has a static pressure which is well above the static pressure in Interior of the positive displacement pump is located. This pressure difference ensures fluid transport between the connection point on the centrifugal pump and the connection point on the positive displacement pump.
  • the return line is designed by the proposed measure relatively short, each of the two connection points of the return line can be prefabricated in the course of production of the pump aggregation.
  • annular channel which is an integral part of the pressure-side interior, and a related first connection point on a radially or approximately radially oriented annular surface which is part of the rear housing part and the annular channel in the axial Direction frontally limited to provide.
  • annular channel which may be formed as a spiral annular channel or as a vaneless annular space with a constant passage cross-section, the flow is delayed, whereby a part of the kinetic energy of the impeller leaving the flow converts into static pressure, so that the static pressure in the annular channel as a whole increases.
  • a preferred embodiment provides that the first connection point is positioned with respect to the discharge nozzle such that an assembly plane which passes through a radial direction vector which passes through the center of the first connection point is penetrated perpendicularly by the longitudinal axis of the discharge nozzle.
  • the so defined position of the first connection point means that a point in the annular channel is selected immediately before the flow enters the discharge nozzle of the centrifugal pump, at which the maximum possible static pressure within the housing of the centrifugal pump is present.
  • a further increase in static pressure can at best be achieved by a diffuser-like expansion of the pressure port or the downstream pressure line.
  • a further proposal provides that the return line is connected via a second connection point with the interior of the positive displacement pump, wherein the second connection point is arranged on the housing shell or on a suction nozzle receiving housing cover or on the suction of each positive displacement pump or on a suction line leading to the positive displacement pump.
  • An extremely short return line with correspondingly low flow losses is realized with a further embodiment in which the return line is connected via a second connection point with the interior of the positive displacement pump, wherein the second connection point is arranged on a front housing part of the centrifugal pump and therefore there in the interior the positive displacement pump opens.
  • the second connection point opens into the displacement area near the wall of the housing shell in the positive displacement pump.
  • a further proposal provides that the second connection point opens into the positive displacement pump with a tangential directional component and in the direction of rotation of the pump aggregation.
  • the remotely controllable shut-off valve is connected via a control line to a signal generator which generates a control signal from a physical quantity characterizing the liquid delivery in the pump aggregation.
  • the vorg. Signalers can be used in a variety of forms, where he always uses a physical size that significantly represents the change in the gas or two-phase flow promotion for liquid delivery in the pump aggregation.
  • the signal generator is a pressure sensor in the suction line or in the suction nozzle or in the liquid ring pump or in the discharge nozzle or in the pressure line.
  • it can also be designed as a differential pressure transducer, which measures the pressure difference between the pressure and suction or between the pressure and suction line.
  • Another possibility is to form it as a flow meter, which is arranged in the suction line or in the pressure line.
  • a liquid sensor at a point between the suction and the pressure line provides the necessary control signal.
  • the signal generator can also be a power sensor, which detects the drive power of a motor of the pump aggregation.
  • a self-priming pump aggregation 1 ( FIGS. 1 to 3 ) is from a normal suction centrifugal pump (centrifugal pump) 2 and one of these, seen in the flow direction, upstream rotary positive displacement pump 20, which is designed in the embodiment as a so-called.
  • Liquid ring pump is formed.
  • the displacement pump 20 is on the housing side of a housing shell 20.1 ( Figures 2 and 1 ) and a housing cover 20.2 with a centrally arranged on the latter suction nozzle 20.2a limited, wherein the housing shell 20.1 is fixedly connected at its end remote from the housing cover 20.2 end with a front housing part 2.1 of the centrifugal pump 2.
  • the connection between the housing shell 20.1 and the front housing part 2.1 is usually cohesively by welding; a cast construction consisting of the housing shell 20: 1 and the front housing part 2.1 is equally possible.
  • An axial axis of symmetry a 2 of the housing shell 20.1 is opposite a rotational axis a 1 of the pump aggregation 1 (see FIGS. 1 and 3 ), based on the drawing position of the pump aggregation 1, which also corresponds to the usual installation position, offset by a vertical eccentricity e down.
  • the positive displacement pump 20 screw conveyor 21 which is arranged on a shaft extension 8b of an impeller 4 of the centrifugal pump 2 bearing shaft 8 to this vertical eccentricity e within the housing shell 20.1 moved upwards.
  • the shaft extension 8b adjoins a hub 8a of the shaft 8, wherein on the hub 8a, the impeller 4 is fixed, and it engages through the front housing part 2.1 and in the housing shell 20.1 a.
  • An inner space 20.3 bounded on the inside by the housing jacket 20.1, the housing cover 20.2 and the front housing part 2.1 is provided via an inlet opening 2.1b ( 2.1b ) arranged concentrically in the front housing part 2.1 and thus concentrically with the axis of rotation a1.
  • FIG. 2 With a suction-side interior 2.1c of the centrifugal pump 2 fluidly connected.
  • the expansion of the centrifugal pump 2 is for example from the DE 103 14 425 B4 known.
  • One consisting of the front 2.1 and a rear housing part 2.2 Housing 2.1 / 2.2 of the centrifugal pump 2 is attached via a mounting flange 7 flying on a motor 6 ( FIGS. 1 and 2 ).
  • a pressure port 5 is connected, which ends via a conical extension 5a in a connecting piece 5b.
  • This transitional surface is then continued in an outer annular channel housing wall 2.1 a, wherein this example has the shape of a cylinder jacket, ie a constant radius of curvature, an outer radius R a , has ( FIG. 4 ).
  • the rear housing part 2.2 is formed in the region of the impeller 4 as a radially extending disk.
  • annular channel 3 * from between operating at ever-changing type passage cross section (radius of curvature r i) can be designed as spiral-shaped annular channel 3 **. Nevertheless, with the arrangement shown, an annular channel 3 * with a passage cross section which is constant over the circumference can also be realized.
  • the (spiral) annular channel (3 **), 3 * joins laterally to the vane-less annular space 3a; together they form a pressure-side interior 3 of the centrifugal pump second
  • FIG. 4 shows how the spiral annular channel 3 **, seen over the circumference, steadily widened.
  • the passage cross-section of the spiral annular channel 3 ** increases steadily from a minimum cross section to a point where FIG. 4 the horizontal center line forms a vertical with the longitudinal axis of the pressure port 5.
  • the inner annular channel housing wall 2.2a is continuously curved. This is followed by an unillustrated planar wall region, which ensures a passage cross-section in the region of the spiral-shaped annular channel 3 ** which corresponds at least to the passage cross-section of the pressure port 5.
  • the outer axial limit of the (helical) ring channel (3 **) 3 * is realized via a at the inner annular channel housing wall 2.2a then, moving away from the rotational axis A 1 in a radial direction radially or approximately radially oriented annular surface 2.2b, which is part of the rear housing part 2.2 ( FIG. 2 ).
  • This annular surface 2.2b continues over the outermost radial extent of the outer annular channel housing wall 2.1a in the radial direction to the outside.
  • outer annular channel housing wall 2.1a is adjoined by an unspecified, radially oriented, corresponding to the radial annular surface 2.2b and releasably connected annular surface, which on the outside comprises the radial annular surface 2.2b.
  • Both radial annular surfaces have a plurality of distributed through their circumference, mutually corresponding through holes through which the front and the rear housing part 2.1, 2.2 are interconnected.
  • a return line 9 ( Figures 2 . 3 . 1 ) is the centrifugal pump side connected to the pressure-side interior 3 within the housing 2.1 / 2.2.
  • a first connection point 9a is preferably provided in the annular channel 3 * or in the spiral-shaped annular channel 3 **.
  • first connection point 9a is positioned with respect to the pressure connection 5 such that an arrangement plane E (see also FIG. 4 ), which passes through a radial direction vector which passes through the center of the first connection point 9a, is penetrated vertically by the longitudinal axis of the pressure port 5.
  • the return line 9 is connected via a second connection point 9b with the interior 20.3 in connection, wherein the second connection point 9b on the housing shell 20.1 or on the housing cover 20.2 or the suction nozzle 20.2a or on a suction line 24 is arranged.
  • An alternative embodiment with a very short return line 9 provides that the latter is arranged via a second connection point 9b on the front housing part 2.1 of the centrifugal pump 2 and consequently opens out there into the interior 20.3 of the rotating positive displacement pump 20.
  • the second connection point 9a opens into the positive displacement pump 20 in the region of the housing jacket 20.1 close to the wall, wherein it can also be oriented with a tangential directional component and in the direction of rotation n of the pump aggregation 1.
  • the return line 9 is divided between the two connection points 9a, 9b and the ends are connected to one another by a screw 26.
  • a shut-off valve 22 is arranged in this, which is remotely controllable in a preferred embodiment.
  • the remotely controllable shut-off valve 22 is connected via a control line 27 with a signal generator 23 ( FIGS. 2 to 4 ), the one Control signal generated from a the liquid promotion in the pump aggregation 1 characterizing physical size.
  • the signal generator 23 is a pressure sensor in the suction line 24 or in the suction port 20.2a or in the liquid ring pump 20 or in the discharge nozzle 5 or in a pressure line 25.
  • the signal generator 23 is alternatively formed as a differential pressure transducer, which measures the pressure difference between the pressure and suction 5, 20.2a or between the pressure and suction lines 25, 24. Furthermore, the signal generator 23 is alternatively a flow meter in the suction line 24 or in the pressure line 25 or it is a liquid sensor at a point between the suction and the pressure line 24, 25th A further alternative is to use as a signal generator 23 a power sensor which detects the drive power of the motor 6 of the pump aggregation 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Claims (12)

  1. Ensemble de pompes (1) à amorçage automatique, qui représente un montage en série d'une pompe à anneau liquide fonctionnant en tant que pompe volumétrique (20) rotative et d'une pompe centrifuge (2) à amorçage normal, la pompe centrifuge (2) présentant, dans un boîtier (2.1/2.2) muni d'une ouverture d'admission (2.1b) et d'une tubulure de refoulement (5), un arbre (8) supporté en rotation avec une roue (4), le boîtier, vu dans le sens d'écoulement, se composant d'une partie de boîtier avant (2.1) et d'une partie de boîtier arrière (2.2), une chambre intérieure (20.3) limitée par une enveloppe de boîtier (20.1) de la pompe volumétrique (20) étant raccordée par le biais de l'ouverture d'admission (2.1b) à une chambre intérieure (21.c) côté aspiration de la pompe centrifuge (2), et une vis sans fin (21) étant disposée dans l'enveloppe de boîtier (20.1) et étant fixée sur l'arbre (8) traversant la roue (4) et engrenant dans l'enveloppe de boîtier (20.1), et une conduite de retour (9) étant prévue, qui raccorde une zone côté refoulement de la pompe centrifuge (2) directement ou indirectement à la chambre intérieure (20.3),
    caractérisé en ce que,
    côté pompe centrifuge, la conduite de retour (9) est, par le biais d'un premier point de raccordement (9a), raccordée, à l'intérieur du boîtier (2.1/2.2), à une chambre intérieure (3 ; 3*, 3**) côté refoulement montée en aval de la roue (4), vu dans le sens d'écoulement,
    le premier point de raccordement (9a) débouche d'une surface annulaire (2.2b) qui est radiale ou orientée approximativement radialement et limite la chambre intérieure (3 ; 3*, 3**) côté refoulement dans la zone d'un canal annulaire (3*, 3**), et qui fait partie de la partie de boîtier arrière (2.2) et qui limite le canal annulaire (3* ; 3**) dans la direction axiale en tant que zone de paroi côté frontal la plus en arrière,
    et en ce que le canal annulaire (3* ; 3**) fait partie intégrante de la chambre intérieure (3 ; 3*, 3**) côté refoulement.
  2. Ensemble de pompes à amorçage automatique selon la revendication 1,
    caractérisé en ce que
    le canal annulaire (3*, 3**) est constitué en tant qu'espace annulaire (3*) sans aube avec une section transversale de passage constante ou en tant que canal annulaire (3**) en forme de spirale.
  3. Ensemble de pompes à amorçage automatique selon la revendication 1 ou 2,
    caractérisé en ce que
    le premier point de raccordement (9a) est positionné de telle façon par rapport à la tubulure de refoulement (5) qu'un plan d'agencement (E), qui traverse un vecteur directionnel radial qui passe par le point central du premier point de raccordement (9a), est pénétré perpendiculairement par l'axe longitudinal de la tubulure de refoulement (5).
  4. Ensemble de pompes à amorçage automatique selon l'une des revendications 1 à 3,
    caractérisé en ce que
    la conduite de retour (9) est en liaison avec la chambre intérieure (20.3) par le biais d'un deuxième point de raccordement (9b), le deuxième point de raccordement (9b) étant disposé
    • sur l'enveloppe de boîtier (20.1) ou
    • sur le couvercle de boîtier (20.2) logeant une tubulure d'aspiration (20.2a) ou
    • sur la tubulure d'aspiration (20.2a) ou
    • sur une conduite d'aspiration (24).
  5. Ensemble de pompes à amorçage automatique selon l'une des revendications 1 à 3,
    caractérisé en ce que
    la conduite de retour (9) est en liaison avec la chambre intérieure (20.3) par le biais d'un deuxième point de raccordement (9b), le deuxième point de raccordement (9b) étant disposé sur une partie de boîtier avant (2.1) de la pompe centrifuge (2) et débouchant de cette partie.
  6. Ensemble de pompes à amorçage automatique selon la revendication 4 ou 5,
    caractérisé en ce que
    le deuxième point de raccordement (9b) est disposé dans le plan d'agencement (E) et latéralement près de la tubulure d'aspiration (20.2a) ou latéralement près de l'ouverture d'admission (2.1b), par rapport à l'axe de rotation (a1) de l'ensemble de pompes (1), sur le côté du premier point de raccordement (9a).
  7. Ensemble de pompes à amorçage automatique selon l'une des revendications 4 à 6,
    caractérisé en ce que,
    dans la zone de l'enveloppe de boîtier (20.1) proche de la paroi, le deuxième point de raccordement (9b) débouche dans la pompe volumétrique (20).
  8. Ensemble de pompes à amorçage automatique selon l'une des revendications 4 à 7,
    caractérisé en ce que,
    le deuxième point de raccordement (9b) débouche dans la pompe volumétrique (20) avec une composante directionnelle tangentielle et dans le sens de rotation (n) de l'ensemble de pompes (1).
  9. Ensemble de pompes à amorçage automatique selon l'une des revendications 1 à 8,
    caractérisé en ce
    qu'une vanne d'arrêt (22) est disposée dans la conduite de retour (9).
  10. Ensemble de pompes à amorçage automatique selon la revendication 9,
    caractérisé en ce que
    la vanne d'arrêt (22) peut être télécommandée.
  11. Ensemble de pompes à amorçage automatique selon la revendication 10,
    caractérisé en ce que
    la vanne d'arrêt (22) pouvant être télécommandée est raccordée, par le biais d'une ligne de commande (27), à un générateur de signaux (23) qui génère un signal de commande à partir d'une grandeur physique caractérisant le transfert de liquide dans l'ensemble de pompes (1).
  12. Ensemble de pompes à amorçage automatique selon la revendication 11,
    caractérisé en ce que
    le générateur de signaux (23)
    • est un capteur de pression
    ° dans la conduite d'aspiration (24) ou
    ° dans la tubulure d'aspiration (20.2a) ou
    ° dans la pompe à anneau liquide (20) ou
    ° dans la tubulure de refoulement (5) ou
    ° dans une conduite de refoulement (25)
    • ou un capteur de pression différentielle qui mesure la différence de pression entre
    ° la tubulure de refoulement (5) et la tubulure d'aspiration (20.2a) ou
    ° entre la conduite de refoulement (25) et la conduite d'aspiration (24),
    • ou un débitmètre
    ° dans la conduite d'aspiration (24) ou
    ° dans la conduite de refoulement (25)
    • ou un capteur de liquide dans un emplacement entre la conduite d'aspiration (24) et la conduite de refoulement (25)
    • ou un capteur de puissance qui détecte la puissance d'entraînement d'un moteur (6) de l'ensemble de pompes (1).
EP08784638.2A 2007-07-11 2008-07-05 Ensemble de pompes à amorçage automatique Active EP2171279B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08784638T PL2171279T3 (pl) 2007-07-11 2008-07-05 Samozasysający agregat pompowy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007032228.5A DE102007032228B4 (de) 2007-07-11 2007-07-11 Selbstansaugende Pumpenaggregation
PCT/EP2008/005513 WO2009007075A2 (fr) 2007-07-11 2008-07-05 Ensemble de pompes à amorçage automatique

Publications (2)

Publication Number Publication Date
EP2171279A2 EP2171279A2 (fr) 2010-04-07
EP2171279B1 true EP2171279B1 (fr) 2017-08-30

Family

ID=40121400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08784638.2A Active EP2171279B1 (fr) 2007-07-11 2008-07-05 Ensemble de pompes à amorçage automatique

Country Status (5)

Country Link
EP (1) EP2171279B1 (fr)
DE (1) DE102007032228B4 (fr)
ES (1) ES2648797T3 (fr)
PL (1) PL2171279T3 (fr)
WO (1) WO2009007075A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010005517B4 (de) 2010-01-23 2012-04-19 Gea Tuchenhagen Gmbh Dispergierpumpe
DE102011106525A1 (de) 2011-07-04 2013-01-10 Gea Tuchenhagen Gmbh Dispergierpumpe
DK2574396T3 (da) 2011-09-30 2014-08-25 Alfa Laval Corp Ab Apparat til blanding og pumpning
EP2894342B1 (fr) 2014-01-12 2016-12-28 Alfa Laval Corporate AB Pompe centrifuge à amorçage automatique
DK2894343T3 (en) * 2014-01-12 2017-12-11 Alfa Laval Corp Ab SELF-TILTING CENTRIFUGAL PUMP
DE102015003224C5 (de) * 2015-03-13 2021-07-15 Gea Tuchenhagen Gmbh Selbstansaugende Pumpe
PL3303844T3 (pl) 2015-06-03 2020-03-31 Gea Tuchenhagen Gmbh Wirnik dla pompy wirowej i pompa wirowa
DE102015007100A1 (de) 2015-06-08 2016-12-08 Gea Tuchenhagen Gmbh Selbstansaugende Pumpenaggregation
CN108977760B (zh) 2017-06-02 2020-12-08 京东方科技集团股份有限公司 掩模板及其制备方法和使用方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601516A (en) * 1944-08-30 1948-05-07 Nash Engineering Co Pumps
CH89302A (de) * 1918-01-19 1921-05-16 Siemens Schuckertwerke Gmbh Einrichtung zum Entlüften von Kreiselpumpen mittels einer Luftpumpe.
FR1078226A (fr) * 1952-06-19 1954-11-16 Pompe centrifuge auto-aspirante
DE7533458U (de) * 1975-10-21 1978-06-22 Weir Pumps Ltd., Glasgow, Schottland (Grossbritannien) Fliehkraftpumpe
DE7924976U1 (de) * 1979-09-03 1981-05-27 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Einrichtung zur verbesserung des kavitationsverhaltens von kreiselpumpen.
JPS588292A (ja) * 1981-07-08 1983-01-18 Tokyo Tatsuno Co Ltd 自吸式遠心ポンプ
DK200000278U4 (da) * 2000-09-20 2002-01-11 Apv Fluid Handling Horsens As Hygiejnisk selvansugende centrifugalpumpe.
DE10314425B4 (de) * 2002-06-22 2005-06-16 Tuchenhagen Gmbh Leitvorrichtung für ein in Blechbauweise ausgeführtes Gehäuse einer Kreiselpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2009007075A3 (fr) 2009-03-19
DE102007032228A1 (de) 2009-01-15
ES2648797T3 (es) 2018-01-08
WO2009007075A4 (fr) 2009-05-14
WO2009007075A2 (fr) 2009-01-15
DE102007032228B4 (de) 2016-01-07
EP2171279A2 (fr) 2010-04-07
PL2171279T3 (pl) 2018-04-30

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