EP2292932B1 - Pot d'écartement - Google Patents

Pot d'écartement Download PDF

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Publication number
EP2292932B1
EP2292932B1 EP10168522.0A EP10168522A EP2292932B1 EP 2292932 B1 EP2292932 B1 EP 2292932B1 EP 10168522 A EP10168522 A EP 10168522A EP 2292932 B1 EP2292932 B1 EP 2292932B1
Authority
EP
European Patent Office
Prior art keywords
containment
fastening element
closure piece
connection geometry
measuring
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.)
Active
Application number
EP10168522.0A
Other languages
German (de)
English (en)
Other versions
EP2292932A2 (fr
EP2292932A3 (fr
Inventor
Alexander Gatzka
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 SE and Co KGaA
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 SE and Co KGaA filed Critical KSB SE and Co KGaA
Publication of EP2292932A2 publication Critical patent/EP2292932A2/fr
Publication of EP2292932A3 publication Critical patent/EP2292932A3/fr
Application granted granted Critical
Publication of EP2292932B1 publication Critical patent/EP2292932B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can

Definitions

  • the present invention relates to a containment shell with a primary shell, in particular a containment shell for a split tube unit, the primary shell having a cylindrical, non-metallic base body and a connection geometry located at one end of the primary shell.
  • a separating sleeve of a multi-part containment can or can construction is known, with openings of the separating sleeve in sealing contact with holding parts and fastening and sealing means connect the parts of the containment can or can construction to one another in a sealing manner.
  • the separating sleeve is designed as a pipe section of a fiber-reinforced multi-layer pipe manufactured using the winding technique.
  • the EP 0 822 641 B1 relates to a canned motor in which a sleeve is provided between the stator and rotor, to which an end plate made of the same material is welded.
  • the DE 36 26 934 A1 discloses a can for a permanent magnetic coupling, in which the can consists of an internal metal tube and a casing that supports the metal tube made of an electrically non-conductive material, at least in the area of the magnetic field acting between the drive magnets.
  • the DE 38 23 113 C1 relates to a method for producing a containment can for electrical or magnetic drive units made of fiber composite material with a connection flange and a flattened, curved base which is reinforced with respect to the cylindrical part of the containment can.
  • the casing of the containment can is wound from layers of circumferential and helical windings.
  • the DE 39 16 916 A1 discloses a device for the liquid-tight connection of a pipe with a flange socket or a flange pipe, wherein a sealing ring with a conically tapered surface is provided, which is arranged in the interior of an angle ring.
  • the DE 38 18 832 C2 describes a containment can for glandless electrical or magnetic drive units, wherein the containment can has a jacket consisting of layers of fiber-reinforced plastic, and the bottom part of the containment can has a cup-shaped shape with a tongue-shaped edge extending in the axial direction towards the containment can interior and with a press fit is glued into the coat.
  • the EP 1 606 543 B1 relates to a universal vacuum coupling for a cylindrical receiving part, wherein the cylindrical receiving part ends with a recess and wherein an interface ring has a protruding part in order to facilitate the positioning of the interface ring with respect to the receiving part.
  • the EP 1 768 233 A1 discloses a can of a wet-running electric motor which is made of a non-metallic material, the non-metallic material being provided with at least one additional hermetically sealing layer, and a pump unit with such a can.
  • the EP 0 598 500 A1 shows a generic containment can for a can unit.
  • a containment shell with the features of claim 1. It is then provided that a containment shell is provided with a primary shell, the primary shell having a cylindrical, non-metallic base body and a connection geometry located at one end of the primary shell. It is further provided that the connection geometry extends inwardly in the form of a collar and has two end faces running parallel to and perpendicular to the longitudinal axis of the primary casing.
  • the containment shell can be a containment shell for a split tube unit such as a pump driven by an electric motor, a magnetic drive, a hysteresis clutch drive or the like act.
  • the end faces run parallel to one another and perpendicular to the longitudinal axis of the primary shell, taking into account the tolerances customary in manufacture.
  • connection geometry can be connected to a terminating piece that represents the terminating surface of the containment can base that runs essentially perpendicular to the longitudinal axis of the primary casing, the terminating piece having an outer diameter that is smaller than the inner diameter of the primary casing, the terminating piece preferably being an internal one
  • the end piece is and is particularly advantageously designed to be concave, convex, planar or in the shape of a bottle bottom. The terminating piece is thus advantageously overlapped by the connection geometry, so that the pressure acting in the interior of the containment can presses the terminating piece against the connection geometry during operation.
  • the material of the primary sheath is plastic or fiber-reinforced plastic or carbon-fiber-reinforced plastic or a ceramic. This results in the advantage that no eddy currents are induced in the primary casing, which is located between a stator and a rotor, during operation, which can have a negative effect on the efficiency of the unit and can further lead to undesired heating.
  • an end face on the connection geometry is an inner end face in which a sealing element can be received or against which a sealing element can be pressed, with the sealing element being able to produce tightness between the connection geometry and the end piece, with the sealing element preferably between the inner end face and the Closing piece can be pressed in and / or is inserted in an annular groove made in the closing piece. Since the internal pressure in the containment shell presses the end piece outwards against the connection geometry during operation, it is advantageously a self-reinforcing seal.
  • connection geometry is an outer end face to which an external fastening element can be fastened, the fastening element preferably being designed in the form of a ring or disk.
  • the fastening element has an angled, cylindrically extending guide surface which engages over the primary sheath.
  • the fastening element has a conically running guide surface which rests on a correspondingly conical surface of the connection geometry, the conical surface of the connection geometry preferably being a chamfer of the outer edge of the connection geometry.
  • a sealing element to be provided between the outer fastening element and the outer end face of the connection geometry, with the sealing element being able to produce tightness between the connection geometry and the fastening element, the sealing element preferably being able to be pressed in between the outer end face and the fastening element and / or in an im Fastening attached annular groove is used.
  • the inner terminating piece and the outer fastening element are connected to one another.
  • connection between the inner end piece and the outer fastening element is designed to be detachable, the detachable connection preferably having a central fastening element or a plurality of connection elements.
  • a further embodiment can consist in that the connection between the inner terminating piece and the outer fastening element is embodied in a non-detachable manner.
  • the fastening element is disc-shaped, with a space being formed between the inner end piece and the outer fastening element, which is filled with a heat-insulating material and / or that one or more measuring elements are provided in the space, the measuring element (s) preferably are arranged on the end piece.
  • the measuring element is a measuring element for temperature measurement and / or for leakage monitoring and / or is a measuring element by means of which the state of axial slide bearings can be monitored, which are indirectly and / or directly connected to the containment shell, and / or is a measuring element, by means of which the pressure load on the end piece can be determined.
  • fastening element prefferably designed in the form of a ring, with one or more measuring elements being provided on the outer surface of the inner end piece.
  • the measuring element is a measuring element for temperature measurement and / or is for leakage monitoring and / or is a measuring element by means of which the state of axial slide bearings can be monitored, which are indirectly and / or directly connected to the containment shell, and / or is a measuring element, by means of which the pressure load on the end piece can be determined.
  • the measuring element measures the distance of the inner magnetic ring.
  • a conventional pressure sensor can be used to determine the pressure load on the end piece; it can just as well be provided that this measuring element is used to measure the distance between the end piece and the fastening element and / or the deformation of the end piece.
  • Fig. 1 shows a schematic sectional illustration of a containment can 10 according to the invention, alternative embodiments being identified by reference numerals with dashed lines.
  • the containment shell 10 with its longitudinal axis X which is arranged vertically here only for reasons of simplification, has a cylindrical, non-metallic primary shell 20, which is preferably made of ceramic.
  • the primary casing 20 In the end area of its base body 21, the primary casing 20 has a collar-shaped connection geometry 22 extending inwardly towards the longitudinal axis X of the can 10, which has two end faces 24, 26 running parallel to and perpendicular to the longitudinal axis.
  • One end face 24 is an inner end face 24 and the other end face 26 is an outer end face 26.
  • connection geometry 22 can be connected to a terminating piece 30, 30 ′, which represents the terminating surface of the can 10 running perpendicular to the longitudinal axis X of the primary casing 20.
  • the terminating piece 30, 30 ' has an outer diameter which is smaller than the inner diameter of the primary sheath 20, the terminating piece 30, 30' being of planar design.
  • a sealing ring 34 is designed as a circumferential sealing ring between the inner end face 24 and the outer surface of the terminating piece 30 Sealing element 34 is pressed so that the end piece 30 and the connection geometry 22 are connected in a sealing manner.
  • a circumferential annular groove 32' is additionally provided for the sealing element 34 designed as a circumferential sealing ring 34.
  • a fastening element 40, 40 ′ can be fastened to the outer end face 26 of the connection geometry 22, a first embodiment of the fastening element 40 being disk-shaped and an alternative second embodiment of the fastening element 40 ′ being ring-shaped.
  • a sealing element 42 designed as a circumferential sealing ring 42 is pressed in sealingly between the outer end face 26 and the fastening element 40, 40'.
  • a circumferential annular groove (not shown in more detail) is provided either in the outer end face 26 or in the fastening element 40, 40 ′, into which the sealing element 42 is inserted.
  • the parts can be fastened to one another in a detachable or non-detachable manner using known means.
  • a space 50 is formed between the fastening element 40 and the end piece 30 or 30 ′, which space is filled with a heat-insulating material 60.
  • several measuring elements 70 are provided in the room, the measuring elements 70 being a measuring element 72 for temperature measurement, a further measuring element 74 for leakage monitoring, a measuring element 76 for monitoring the condition of at least one axial plain bearing (not shown) and a measuring element 78 for determining the pressure load of the End piece 30, 30 'include.
  • the heat insulating material 60 can be arranged wholly or partially on the connection piece 30, 30 ′. Likewise, it can also be partially attached to the annular fastening element 40 '. This depends on the properties of the material in relation to the fluid to be sealed.
  • the measuring elements 70 are, however, arranged at the same location and functionally identical on the outside of the end piece 30, 30 ′.
  • Figs. 2 and 3 show alternative embodiments of the in Fig. 1 Shown embodiments of a containment can 10 according to the invention.
  • the same or comparable features and / or components of the containment can are provided with the same reference numerals.
  • the fastening element 140, 140 ′ is modified in such a way that it has a collar-shaped, angled cylindrical running guide surface 144, 144 ′ which engages over the primary sheath 20.
  • the fastening element 140, 140 ' can be designed as a disk-shaped fastening element 140 or as an annular fastening element 140'.
  • the embodiments of the containment shell 10 shown also have the features of the in Fig. 1 shown embodiments of a containment shell 10.
  • the fastening element 240, 240 ′ is modified in such a way that it has a conically running guide surface 244, 244 ′ which rests on a correspondingly conical surface 228 of the connection geometry 222 of the primary sheath 220.
  • the primary sheath 220 like the primary sheath 20 described above, has a cylindrical base body 221 and is made of ceramic.
  • the connection geometry 222 has two end faces 224 and 226 which are aligned parallel to one another and perpendicular to the longitudinal axis X of the primary casing.
  • the fastening element 240, 240 ' can be designed as a disk-shaped fastening element 240 or as an annular fastening element 240'.
  • the embodiments of the containment shell 10 shown also have the features of the in Fig. 1 shown embodiments of a containment shell 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Gasket Seals (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Claims (19)

  1. Pot d'écartement (10) comprenant une enveloppe primaire (20, 220), en particulier pot d'écartement (10) destiné à une unité formant gaine, l'enveloppe primaire (20, 220) comportant un corps de base cylindrique non métallique (21, 221) et présentant une géométrie de raccordement (22, 222) située à une extrémité de l'enveloppe primaire (20, 220), la géométrie de raccordement (22, 222) s'étendant vers l'intérieur sous la forme d'un rebord, la géométrie de raccordement (22, 222) comportant deux faces frontales (24, 26, 224, 226) qui s'étendent parallèlement l'une à l'autre et perpendiculairement à l'axe longitudinal (X) de l'enveloppe primaire (20, 220), la géométrie de raccordement (22, 222) pouvant être reliée à une pièce de terminaison (30, 30') qui représente la surface de terminaison du fond du pot d'écartement, laquelle s'étend sensiblement perpendiculairement à l'axe longitudinal (X) de l'enveloppe primaire (20, 220), la pièce de terminaison (30, 30') ayant un diamètre extérieur qui est inférieur au diamètre intérieur de l'enveloppe primaire (20, 220), caractérisé en ce qu'une face frontale (24, 26, 224, 226) au niveau de la géométrie de raccordement (22, 222) est une face frontale intérieure (24, 224) dans laquelle un élément d'étanchéité (34, 34') peut être reçu ou contre laquelle un élément d'étanchéité (34, 34') peut être pressé, une étanchéité pouvant être réalisée entre la géométrie de raccordement (22, 222) et la pièce de terminaison (30, 30') au moyen de l'élément d'étanchéité (34, 34').
  2. Pot d'écartement (10) selon la revendication 1, caractérisé en ce que la pièce de terminaison (30, 30') est une pièce de terminaison intérieure (30, 30').
  3. Pot d'écartement (10) selon la revendication 1 ou 2, caractérisé en ce que la pièce de terminaison (30, 30') est concave, convexe, plate ou en forme de cul de bouteille.
  4. Pot d'écartement (10) selon la revendication 1, 2 ou 3, caractérisé en ce que le matériau de l'enveloppe primaire (20, 220) est de la matière synthétique ou de la matière synthétique renforcée par des fibres ou de la matière synthétique renforcée par des fibres de carbone ou une céramique.
  5. Pot d'écartement (10) selon l'une des revendications précédentes, caractérisé en ce que l'élément d'étanchéité (34, 34') est enfoncé entre la face frontale intérieure (24, 224) et la pièce de terminaison (30, 30') et/ou inséré dans une rainure annulaire (32') ménagée dans la pièce de terminaison (30, 30').
  6. Pot d'écartement (10) selon l'une des revendications précédentes, caractérisé en ce qu'une face frontale (24, 26, 224, 226) au niveau de la géométrie de raccordement (22, 222) est une face frontale extérieure (26, 226) sur laquelle un élément de fixation extérieur (40, 40', 140, 140', 240, 240') peut être fixé.
  7. Pot d'écartement (10) selon la revendication 6, caractérisé en ce que l'élément de fixation (40, 40', 140, 140', 240, 240') est annulaire ou discoïdal.
  8. Pot d'écartement (10) selon la revendication 6 ou 7, caractérisé en ce que l'élément de fixation (40, 40', 140, 140', 240, 240') comporte une surface de guidage coudée (144, 144') qui s'étend de manière cylindrique et qui s'engage sur l'enveloppe primaire (20) .
  9. Pot d'écartement (10) selon la revendication 6 ou 7, caractérisé en ce que l'élément de fixation (40, 40', 140, 140', 240, 240') comporte une surface de guidage conique (244, 244') qui s'appuie sur une surface conique correspondante (228) de la géométrie de raccordement (222).
  10. Pot d'écartement (10) selon la revendication 9, caractérisé en ce que la surface conique (228) de la géométrie de raccordement (222) est un chanfrein (228) du bord extérieur de la géométrie de raccordement (222) .
  11. Pot d'écartement (10) selon l'une des revendications 6 à 10, caractérisé en ce qu'un élément d'étanchéité (42) est prévu entre l'élément de fixation extérieur (40, 40', 140, 140', 240, 240') et la face frontale extérieure (26, 226) de la géométrie de raccordement (22, 222), une étanchéité entre la géométrie de raccordement (22, 222) et l'élément de fixation (40, 40', 140, 140', 240, 240') pouvant être réalisée au moyen de l'élément d'étanchéité (42).
  12. Pot d'écartement (10) selon la revendication 11, caractérisé en ce que l'élément d'étanchéité (42) peut être enfoncé entre la face frontale extérieure (26, 226) et l'élément de fixation (40, 40', 140, 140', 240, 240') et/ou inséré dans une rainure annulaire ménagée dans l'élément de fixation (40, 40', 140, 140', 240, 240').
  13. Pot d'écartement (10) selon l'une des revendications 6 à 12, caractérisé en ce que la pièce de terminaison intérieure (30, 30') et l'élément de fixation extérieur (40, 40', 140, 140', 240, 240') sont reliés l'un à l'autre.
  14. Pot d'écartement (10) selon la revendication 13, caractérisé en ce que la liaison entre la pièce de terminaison intérieure (30, 30') et l'élément de fixation extérieur (40, 40', 140, 140', 240, 240') est réalisée pour être détachable.
  15. Pot d'écartement (10) selon l'une des revendications 6 à 14, caractérisé en ce que l'élément de fixation (40, 140, 240) est discoïdal, un espace (50) étant ménagé entre la pièce de terminaison intérieure (30, 30') et l'élément de fixation extérieur (40, 140, 240) et étant rempli d'un matériau calorifuge (60) et/ou en ce qu'un ou plusieurs éléments de mesure (70) sont prévus dans l'espace (50).
  16. Pot d'écartement (10) comprenant un élément de mesure selon la revendication 15, caractérisé en ce que le ou les éléments de mesure (70) sont de préférence disposés au niveau de la pièce de terminaison (30, 30').
  17. Pot d'écartement (10) comprenant un élément de mesure selon la revendication 15 ou 16, caractérisé en ce que l'élément de mesure (70) est un élément de mesure destiné à la mesure de température (72) et/ou à la surveillance de fuites (74) et/ou un élément de mesure (76) permettant de surveiller l'état de paliers lisses axiaux qui sont reliés directement et/ou indirectement au pot d'écartement (10), et/ou un élément de mesure (78) permettant de déterminer la contrainte de pression sur la pièce de terminaison (30, 30').
  18. Pot d'écartement (10) selon l'une des revendications 6 à 14, caractérisé en ce que l'élément de fixation (40', 140', 240') est annulaire, un ou plusieurs éléments de mesure (70) étant prévus sur la surface extérieure de la pièce de terminaison intérieure (30, 30').
  19. Pot d'écartement (10) selon la revendication 18, caractérisé en ce que l'élément de mesure (70) est un élément de mesure destiné à la mesure de température (72) et/ou à la surveillance de fuites (74) et/ou est un élément de mesure (76) permettant de surveiller l'état de paliers lisses axiaux qui sont reliés directement et/ou indirectement au pot d'écartement (10) et/ou un élément de mesure (78) permettant de déterminer la contrainte de pression sur la pièce de terminaison.
EP10168522.0A 2009-07-15 2010-07-06 Pot d'écartement Active EP2292932B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009033111A DE102009033111A1 (de) 2009-07-15 2009-07-15 Spalttopf

Publications (3)

Publication Number Publication Date
EP2292932A2 EP2292932A2 (fr) 2011-03-09
EP2292932A3 EP2292932A3 (fr) 2012-10-10
EP2292932B1 true EP2292932B1 (fr) 2021-03-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10168522.0A Active EP2292932B1 (fr) 2009-07-15 2010-07-06 Pot d'écartement

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EP (1) EP2292932B1 (fr)
DE (1) DE102009033111A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017005477U1 (de) 2017-10-24 2017-11-20 Ralph Funck Spalttopf
FR3078115B1 (fr) * 2018-02-22 2021-08-06 Wilo Intec Pompe de circulation d'un fluide avec mesure de pression non intrusive
DE102019002392A1 (de) 2019-04-02 2020-10-08 KSB SE & Co. KGaA Wärmesperre
EP4008908B1 (fr) * 2020-12-02 2024-08-28 Zi Yi Electrical Engineering Co., Ltd. Pompe à rotor noyé avec capteur de fuite

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DE3823113C1 (fr) * 1988-07-08 1989-08-10 Uranit Gmbh, 5170 Juelich, De
EP0598500A1 (fr) * 1992-11-19 1994-05-25 Pmc Liquiflo Equipment Company, Inc. Pompe avec joint d'étanchéité sec

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DE1951766U (de) * 1966-07-30 1966-12-15 Mannesmann Ag Rohrkupplung fuer regnerleitungen aus kunststoff.
DE3337086C2 (de) * 1983-10-12 1993-12-23 Hermann Kraemer Kreiselpumpe mit Spaltrohr-Magnetkupplungsantrieb
DE3626934A1 (de) 1986-08-08 1988-02-11 Klein Schanzlin & Becker Ag Spaltrohr fuer eine permanentmagnetische kupplung
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DE3818832A1 (de) 1988-06-03 1989-12-07 Uranit Gmbh Spalttopf fuer stopfbuchsenlose elektrische oder magnetische antriebsaggregate
JPH083191Y2 (ja) * 1989-02-17 1996-01-29 株式会社安川電機 キャンドモータ
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PL1768233T3 (pl) * 2005-09-24 2010-12-31 Grundfos Management As Rura szczelinowa
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Publication number Priority date Publication date Assignee Title
DE3823113C1 (fr) * 1988-07-08 1989-08-10 Uranit Gmbh, 5170 Juelich, De
EP0598500A1 (fr) * 1992-11-19 1994-05-25 Pmc Liquiflo Equipment Company, Inc. Pompe avec joint d'étanchéité sec

Also Published As

Publication number Publication date
EP2292932A2 (fr) 2011-03-09
DE102009033111A1 (de) 2011-02-03
EP2292932A3 (fr) 2012-10-10

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