EP2228538B1 - Agrégat de pompe centrifuge à plusieurs niveaux - Google Patents

Agrégat de pompe centrifuge à plusieurs niveaux Download PDF

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Publication number
EP2228538B1
EP2228538B1 EP09003452.1A EP09003452A EP2228538B1 EP 2228538 B1 EP2228538 B1 EP 2228538B1 EP 09003452 A EP09003452 A EP 09003452A EP 2228538 B1 EP2228538 B1 EP 2228538B1
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EP
European Patent Office
Prior art keywords
assembly according
stage centrifugal
centrifugal pump
pump
pump assembly
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
EP09003452.1A
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German (de)
English (en)
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EP2228538A1 (fr
Inventor
Esben Brun Grønborg
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.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
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 Grundfos Management AS filed Critical Grundfos Management AS
Priority to EP09003452.1A priority Critical patent/EP2228538B1/fr
Priority to TW098121126A priority patent/TWI495798B/zh
Priority to CN201010135622.7A priority patent/CN101832272B/zh
Priority to US12/720,860 priority patent/US8568093B2/en
Publication of EP2228538A1 publication Critical patent/EP2228538A1/fr
Application granted granted Critical
Publication of EP2228538B1 publication Critical patent/EP2228538B1/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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F04D1/063—Multi-stage pumps of the vertically split casing type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/21—Manufacture essentially without removing material by casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/51—Building or constructing in particular ways in a modular way, e.g. using several identical or complementary parts or features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/54—Building or constructing in particular ways by sheet metal manufacturing

Definitions

  • the invention relates to a multi-stage centrifugal pump unit with the features specified in the preamble of claim 1.
  • a centrifugal pump unit is from the GB 907 084 known.
  • the multistage centrifugal pump units in question are, in particular, those with a horizontal shaft, in which the motor and pump are therefore arranged next to one another during operation.
  • Such units have long been state of the art and are manufactured and offered, for example, by the company Grundfos under the series designations CH and CHN. They consist of an electric drive motor and an associated single- or multi-stage centrifugal pump, wherein the motor housing of the motor is connected to the pump housing and between the pump and motor housing, a bearing support is provided which receives a bearing of a shaft, the motor side a rotor and pump side Wearing wheels, which are arranged in pump chambers.
  • This bearing carrier forms either part of the motor housing or part of the pump housing or both.
  • the aforementioned series CH and CHN differ mainly in that the end-side pump housing parts of the CH series are made of cast iron, whereas in the CHN series all liquid-carrying parts of the pump are lined with stainless steel sheet or made of stainless steel.
  • the two series have a large number of identical parts, such as the centrifugal wheels and those made of sheet metal Pump chambers, which include the nozzle of each stage, but also a variety of different components.
  • the invention has the object, a generic multi-stage centrifugal pump unit, which is typically manufactured in two design variants, so formed that it is cheaper to produce.
  • the multi-stage centrifugal pump unit according to the invention has the features of claim 1.
  • the basic idea of the present invention is to increase the number of identical parts of both pump series in order to save on manufacturing costs.
  • the comparatively complex to manufacture component which forms the bearing carrier, designed so that it can optionally accommodate a subsequent cast housing component, which has the pressure connection of the pump or a formed from sheet metal lining part, so can be used equally for both series .
  • both Series can be made with the same bearing carrier, the variety of parts is lowered, whereby the manufacturing costs, storage costs and the like can be reduced.
  • the bearing support according to the invention has on the pump side a first support ring, which is designed and arranged corresponding to the support region, in particular the outer diameter of the pump chambers.
  • This support region is provided in particular for the variant lined with stainless steel, which requires an abutment in this region, namely in the region of the outer diameter of the pump chambers, in order to be able to press these tightly and firmly against one another.
  • the bearing carrier according to the invention has on the pump side a second support ring which lies within the first support ring and which supports the lining part on the inside.
  • the lining part which typically consists of comparatively thin stainless steel sheet, requires further support in this area, since in this area typically the pressure of the last pump stage is present, which can lead to comparatively high pressure forces. To avoid correspondingly high sheet thicknesses, it is therefore expedient to support the lining accordingly.
  • the first or second support ring are formed not only for support, but also as a centering ring for the lining part or the casting and ensure that the aforementioned components are arranged in their intended position with respect to the common axis of rotation of the motor and pump.
  • the bearing carrier is provided on the pump side with a third support ring, which is arranged within the first and the second support ring and the stationary Part of a mechanical seal supported axially.
  • This design is particularly advantageous for lined with stainless steel sheet series in which such a support formed of sheet metal would be expensive to build.
  • a groove open towards the pump in the bearing carrier is provided outside of the first support ring, which for the positive reception of integrally formed in the casting centering or a seal which seals the lining against at least one housing shell, which engage with their ends in the groove.
  • This open towards the pump groove in the bearing carrier thus has different functions depending on the connection component.
  • this groove serves to accommodate the integrally formed on the casting centering, in particular a centering ring, whereas in the case lined with stainless steel construction this groove at least also serves to provide a seal which the lining part at least with respect to the housing shell, possibly even against the Bearing carrier self-sealing.
  • the lining part and the housing shell advantageously engage in the groove, including the seal.
  • the lining part is formed at its radially outer end to form a space accommodating part of the sealing ring, in particular a groove in which the seal, typically an O-ring, is located.
  • This training has particular assembly advantages, since the seal can be freely accessible in the radially outwardly open groove of the lining part, after which the insertion into the open towards the pump groove in the bearing carrier, in which the seal is practically no longer accessible.
  • the housing shell which is typically formed of stainless steel, is on the side facing away from the engine by an end-side lining completed.
  • This formed of housing shell and end-side lining is advantageously designed cup-shaped, wherein the lining forms the bottom of the pot.
  • Such a component is particularly expediently integrally formed, preferably as deep-drawn sheet metal part, which is inexpensive to produce in mass production. The integral nature of this component is also in terms of assembly and tightness of particular advantage.
  • the end-side lining is supported by an end-side, consisting for example of cast support body.
  • an end-side consisting for example of cast support body.
  • Such a support body makes it possible for the lining itself to absorb forces only to a very limited extent and thus be made inexpensively from relatively thin sheet metal. Since the support body should not come into contact with the pumped medium, it is provided according to the invention to provide in the end-side lining, preferably centrally a suction nozzle made of stainless steel, which is guided through the support body.
  • suction can either be formed from sheet metal or formed by a separate, made of stainless steel annular member which is sealed and firmly connected to the remaining part of the lining by welding.
  • the housing shell is advantageously arranged at a distance from the pump chambers and has the pressure connection of the pump. Then, the last pump stage is fluidly connected to the interior of the housing shell, on which the pressure connection of the pump, typically designed as a discharge nozzle is arranged.
  • traction means are provided according to the invention, which under inclusion of the pump chambers and the housing shell the end-side Connect the support body to the bearing carrier.
  • Such traction means are typically screws, for example expansion screws, between which the aforementioned components are clamped.
  • the end support body is provided with an outer support ring which is formed and arranged corresponding to the support region, in particular the outer diameter of the pump chambers, and moreover with at least one inner Support ring and / or an inner support surface which supports the lining in the area around the suction nozzle around.
  • further support surfaces may be provided.
  • the end-side support body is formed in the area aligned with the housing shell with clearance to this or to the end-side lining. This clearance ensures that no clamping forces are applied to the housing shell, but only to the pump chambers.
  • the pump chambers between an end-side casting, which has the suction port of the pump and the casting housing part are clamped by traction means, wherein the casting housing part is fixed to the bearing support, preferably by means of screws.
  • the three-stage centrifugal pump assemblies shown each have a motor 1 with a motor housing 2, in which a motor shaft 3 is mounted, which carries a rotor 4 and at one (left in the figures) end a fan 5 and at the other end rotatably with a pump shaft. 6 is connected, which carries three pump impellers 7, each running in the pump chambers 8 and which are connected in a conventional manner, as in the case of multi-stage pumps, fluidly connected in series.
  • FIGS. 1 and 2 are the pump chambers 8 between a suction port 9 having end-side Cast part 10 and a pressure connection 11 of the pump having cast housing part 12 incorporated.
  • the pump chambers 8 are incorporated between these components 10 and 12 by means not shown in the drawings clamping screws.
  • the cast housing part 12 is fastened by means of screws to a bearing carrier 13, which in turn is screwed tightly to the motor housing 2.
  • the bearing carrier 13 carries, in particular Fig. 2 shows, on its side facing the motor 1, a ball bearing 14, with which the pump-side end of the motor shaft 3 is rotatably mounted, which is rotatably connected in this area with the pump shaft 6, which sits in a blind hole in the pump-side end of the motor shaft 3.
  • the bearing carrier 13 carries a fixed sealing ring 15 which is sealed by means of an O-ring radially relative to the bearing carrier 13 and sealingly abuts with its facing the motor end face on the rotating axial side of the seated on the motor shaft 3 inner ring of the ball bearing 14.
  • the sealing ring 15 is arranged in a free space 16 of the bearing carrier 13, which is connected via a channel 17 with the motor and pump surrounding the outside environment. In this free space 16, a rotating slinger 18 is arranged, which seals with its inner side opposite the pump shaft 6 and there prevents any along the shaft 6 leaking liquid from the engine 1.
  • the bearing support 13 On the side facing the pump, the bearing support 13 has a first outer support ring 19, which is arranged approximately in alignment with the outer diameter of the pump chambers 8 and in the construction variant according to FIGS FIGS. 1 and 2 abuts a corresponding support surface 20 of the cast housing part 12.
  • the bearing carrier 13 has a second support ring 21, which is arranged concentrically to the first support ring and projecting axially towards the pump.
  • this second support ring 21 has no function and is spaced from the casting housing part 12.
  • a further support ring 22 is disposed on the bearing support 13, which is arranged recessed relative to the first and the second support ring and abuts against a corresponding mating surface of the cast housing part 12.
  • a third support ring 23 is disposed within the aforementioned support rings 19, 21 and 22 and surrounds the pump shaft 6.
  • This third support ring 23 serves for the axial support of a fixed ring 24 of a mechanical seal 25.
  • This fixed ring 24 is radially opposite to by means of an O-ring sealed corresponding inside of the cast housing part 12.
  • the bearing support 13 near its outer circumference has a circumferential groove 26, in which a centering ring 27 engages with its radial inner surface and bears radially, which is integrally formed on the casting housing part 12 on the motor-facing side.
  • the engine 1 and bearing bracket 13 and the incorporated therein to the engine components are identical as described above and therefore also provided with the same reference numerals.
  • the pump is also three-stage and functionally identical to the above, but differs in that all liquid-carrying components, unless they are like the wheels 7 and 8 pump chambers made of stainless steel, lined with stainless steel sheets.
  • the pump side adjoins the bearing support 13, a lining part 28 in the form of a profiled sheet metal disc.
  • the lining part 28 has an inner, axially extending annular portion, with which it rests on the outer circumference of the third support ring 23, but further extends axially pump side and there receives the fixed ring 24 of the mechanical seal 25, which is axially supported on the third support ring 23 and the by means of an O-ring against this ring section the lining part 28 is sealed. From the outer periphery of the fixed ring 24, the lining part 28 then extends radially outwards, where it bears against the further support ring 22. From there it extends further radially outward and is simultaneously bent in the axial direction to the pump, to then be supported on the second support ring 21.
  • the lining part 28 extends radially beyond the second support ring 21 and jumps away from the engine at a distance, in order to come to rest in the area of the first outer support ring 19, where the outer sides of the pump chambers 8 also come to rest. From there, the lining part 28 is directed radially outwards and towards the pump, in order then to be bent over about 180 ° and to be formed into a groove 29 which extends radially on the outer circumference and opens outwards. Within this groove 29, an O-ring 30 is arranged, which projects radially outward and there seals against a motor-side end of a housing shell 31 which is incorporated together with the groove-shaped portion of the lining part 28 in the groove 26 of the bearing bracket 13. In particular Fig.
  • the shape of the lining part 28 is designed so that the O-ring 30 is largely encapsulated against the pressure chamber formed by the housing shell 31 and the outside of the pump chambers 8.
  • the outer circumference of the outer support ring 19 also forms a centering ring for the lining part 28.
  • the housing shell 31 surrounds the pump chambers 8 at a distance and is connected to the pressure side of the third, the motor 1 adjacent pump chamber 8. From the housing shell 31 of the pressure port 11 of the pump is led out, which is designed here as a discharge nozzle.
  • the housing shell 31 has a substantially cylindrical shape and is connected at its pump-side end facing away from the engine 1 with an end-side lining 32 which has a central recess in which a nozzle 33 is incorporated, which forms the suction port 9 of the pump.
  • the nozzle 33 is formed of stainless steel and connected by welding with the liner 32 tight and tight.
  • the end-side lining 32 and the housing shell 31 are cup-shaped and manufactured by deep drawing.
  • the sheet metal construction, in particular the end-side lining 32 is supported by an end-side support body 34, which is connected via tie rods, not shown, with the bearing support 13 and which consists of cast iron.
  • the support body 34 is penetrated centrally through the nozzle 33 and has, moreover, an outer support ring 35 which is arranged corresponding to the support region, ie the outer diameter of the pump chambers 8, and an inner support ring 36 which surrounds the nozzle 33 on its inner side.
  • the end-side support body 34 supports the end-side lining 32 both in the region of the free end faces and in particular in the region in which the pump chambers 8 abut.
  • the radial outer side of the outer support ring 35 also serves for centering the end-side lining 32.
  • the support surface 37 is interrupted by a filling opening 39 which is tightly closable by means of a sealing plug.
  • This filling opening 39 not only passes through the end-side lining 32 but also a correspondingly expanded recess in the end-side supporting body 34 is provided in alignment therewith in order to ensure the accessibility of the opening.
  • This opening 39 is used to fill the pump with liquid before startup.
  • the end-side support body 34 extends radially beyond the housing shell 31, where also arranged the tie rods (not shown) are. In the area of the housing shell 31 and also directed radially inward to the outer periphery of the pump chambers 8 a circumferential clearance 38 is provided in the end-side support body, which ensures that no forces are applied to the housing shell 31 in this area.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (16)

  1. Groupe pompe centrifuge à plusieurs étages comprenant un carter de moteur (2) et un carter de pompe relié à celui-ci, ainsi qu'un support de palier (13) qui présente des couronnes d'appui et loge un palier (14) supportant un arbre (3), lequel porte, sur le côté moteur, un rotor et, sur le côté pompe, des roues mobiles qui sont disposées dans des chambres de pompe, caractérisé en ce que le support de palier (13) est conçu pour recevoir au choix, soit une partie formant carter en fonte (12) qui présente le raccord de pression (11) de la pompe, soit une partie formant garniture (28) faite de tôle, et présente, sur le côté pompe, une première couronne d'appui (19) qui est conformée et disposée d'une façon qui correspond à la région d'appui et au diamètre extérieur des chambres de pompe (8), en ce que le support de palier (13) présente sur le côté pompe une deuxième couronne d'appui (21) qui se trouve à l'intérieur relativement à la première couronne d'appui (19) et qui donne appui, en position intérieure, à la partie formant garniture (28), et en ce que le support de palier (13) présente sur le côté pompe une troisième couronne d'appui (23) qui est disposée à l'intérieur relativement aux première et deuxième couronnes d'appui (19, 21), et qui donne axialement appui à la partie fixe (24) d'un joint d'étanchéité à bague glissante (15).
  2. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que la première ou la deuxième couronne d'appui (19, 21) constitue une couronne de centrage pour la partie formant garniture (28) ou pour la partie en fonte (12).
  3. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce qu'à l'extérieur de la première couronne d'appui (19), il est prévu dans le support de palier (13) une rainure (26) qui s'ouvre en direction de la pompe et qui sert à recevoir, avec formation d'une liaison par sûreté de forme, des moyens de centrage (27) conçus dans la partie en fonte (12), ou une garniture d'étanchéité (30) qui relie à joint étanche la partie formant garniture (28) à au moins une paroi latérale de carter (31), et qui s'engagent ou s'engage dans la rainure (26) par leurs ou ses extrémités.
  4. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que la partie formant garniture (28) est conformée à son extrémité radialement extérieure de manière à former un espace qui reçoit une partie du joint d'étanchéité (30).
  5. Groupe pompe centrifuge à plusieurs étages selon la revendication 4, caractérisé en ce que l'espace qui reçoit une partie du joint d'étanchéité (30) est constitué par une gorge (29).
  6. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que la paroi latérale de carter (31) est fermée par une garniture terminale (32) sur le côté opposé au moteur (1).
  7. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que la paroi latérale de carter (31) et la garniture terminale (32) sont en forme de godet et en une seule pièce.
  8. Groupe pompe centrifuge à plusieurs étages selon la revendication 7, caractérisé en ce que la paroi latérale de carter (31) et la garniture terminale (32) sont constituées par une pièce en tôle emboutie.
  9. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que la garniture terminale (32) est serrée par une pièce d'appui terminale (34).
  10. Groupe pompe à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que la garniture terminale (32) comprend une tubulure d'aspiration (33) qui passe à travers la pièce d'appui (34).
  11. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que la paroi latérale de carter (31) est disposée à distance des chambres de pompe (8) et présente le raccord de pression (11) de la pompe.
  12. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce qu'il comprend des moyens de traction qui relient la pièce d'appui terminale (34) au support de palier (13) en intégrant dans l'ensemble les chambres de pompe (8) et la paroi latérale de carter (31).
  13. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que la pièce d'appui terminale (34) présente une couronne d'appui extérieure (35) qui est conformée et disposée d'une façon qui correspond à la région d'appui ainsi qu'au moins une couronne d'appui intérieure (36) et/ou une surface d'appui intérieure (37).
  14. Groupe pompe centrifuge à plusieurs étages selon la revendication 13, caractérisé en ce que la couronne d'appui extérieure (35) est conformée et disposée d'une façon qui correspond au diamètre extérieur des chambres de pompe (8).
  15. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que, dans la région qui est alignée avec la paroi latérale de carter (31), la pièce d'appui terminale (34) est conformée pour former un espace libre (38) orienté vers la paroi latérale de carter (31) ou vers la garniture terminale (32).
  16. Groupe pompe centrifuge à plusieurs étages selon l'une des revendications précédentes, caractérisé en ce que les chambres de pompe (8) sont serrées par des moyens de traction entre une pièce terminale en fonte (10) qui présente le raccord d'aspiration (9) de la pompe et la partie formant carter en fonte (12), la partie formant carter en fonte (12) étant fixée au support de palier (13).
EP09003452.1A 2009-03-10 2009-03-10 Agrégat de pompe centrifuge à plusieurs niveaux Active EP2228538B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09003452.1A EP2228538B1 (fr) 2009-03-10 2009-03-10 Agrégat de pompe centrifuge à plusieurs niveaux
TW098121126A TWI495798B (zh) 2009-03-10 2009-06-24 多級離心泵組
CN201010135622.7A CN101832272B (zh) 2009-03-10 2010-03-10 多级离心泵组
US12/720,860 US8568093B2 (en) 2009-03-10 2010-03-10 Multi-stage centrifugal pump assembly (bearing carrier)

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Application Number Priority Date Filing Date Title
EP09003452.1A EP2228538B1 (fr) 2009-03-10 2009-03-10 Agrégat de pompe centrifuge à plusieurs niveaux

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EP2228538A1 EP2228538A1 (fr) 2010-09-15
EP2228538B1 true EP2228538B1 (fr) 2015-09-16

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US (1) US8568093B2 (fr)
EP (1) EP2228538B1 (fr)
CN (1) CN101832272B (fr)
TW (1) TWI495798B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170082070A1 (en) * 2012-04-17 2017-03-23 Timothy J. Miller Turbopump with a single piece housing and a smooth enamel glass surface
JP6080720B2 (ja) * 2013-07-26 2017-02-15 日本オイルポンプ株式会社 ポンプ装置
RU2618777C2 (ru) * 2015-09-04 2017-05-11 Акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" Двухступенчатый электронасосный агрегат

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB907084A (en) * 1960-11-15 1962-10-03 Kraemer Hermann Improvements in or relating to fluid pumps
EP1178212A2 (fr) * 2000-08-03 2002-02-06 Claber S.P.A. Pompe centrifugale refroidie par eau
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Also Published As

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US8568093B2 (en) 2013-10-29
EP2228538A1 (fr) 2010-09-15
TWI495798B (zh) 2015-08-11
TW201033477A (en) 2010-09-16
CN101832272A (zh) 2010-09-15
CN101832272B (zh) 2014-04-09
US20100232951A1 (en) 2010-09-16

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