EP3460246B1 - Pompe centrifuge pour milieux de transport cryogéniques - Google Patents

Pompe centrifuge pour milieux de transport cryogéniques Download PDF

Info

Publication number
EP3460246B1
EP3460246B1 EP18192242.8A EP18192242A EP3460246B1 EP 3460246 B1 EP3460246 B1 EP 3460246B1 EP 18192242 A EP18192242 A EP 18192242A EP 3460246 B1 EP3460246 B1 EP 3460246B1
Authority
EP
European Patent Office
Prior art keywords
pump
roller bearing
cryogenic
pump housing
housing
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
EP18192242.8A
Other languages
German (de)
English (en)
Other versions
EP3460246A1 (fr
Inventor
Stéphane BOEGLIN
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.)
Fives Cryomec AG
Original Assignee
Fives Cryomec 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 Fives Cryomec AG filed Critical Fives Cryomec AG
Publication of EP3460246A1 publication Critical patent/EP3460246A1/fr
Application granted granted Critical
Publication of EP3460246B1 publication Critical patent/EP3460246B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/18—Lubricating arrangements
    • F01D25/22—Lubricating arrangements using working-fluid or other gaseous fluid as lubricant
    • 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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/059—Roller 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • 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
    • 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
    • F04D13/0633—Details of the 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/049—Roller 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
    • F04D29/06—Lubrication
    • F04D29/061—Lubrication 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings 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
    • F04D29/406—Casings; Connections of working fluid 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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0865—Oxide ceramics
    • F05C2203/0886—Silica

Definitions

  • the present invention describes a centrifugal pump for cryogenic media according to the preamble of the first claim.
  • a known weak point particularly in the case of centrifugal pumps for use with cryogenic conveying media, is the roller bearings which are usually used and on which a motor shaft is mounted.
  • Such a solution of a pump for cryogenic media with unlubricated roller bearings is for example from the Japanese patent document JP 2014/020491 A known.
  • steel races are used, the steel being subjected to cryogenic hardening.
  • the rolling elements can also be made of steel with cryogenic hardening or ceramic. According to the solution shown in this document, an attempt should therefore be made to To increase the abrasion resistance of the bearings in order to be able to dispense with the use of lubricants.
  • a centrifugal pump for conveying a cryogenic medium comprises a main delivery flow of the cryogenic delivery medium between the inlet side or suction side, and the outlet side or pressure side.
  • openings are provided in an outlet flange, part of the escaping, cryogenic delivery medium being branched off from the main delivery flow via these openings and being guided to a connecting piece on the pump housing via pipes arranged outside the pump housing.
  • the connecting piece is located essentially in the same axial position as the upper roller bearing, ie, the roller bearing which is more distant from the pump wheel, with a through a bore in an upper housing cover communicating connection between the connecting piece and the upper roller bearing is created. Lubrication of the upper roller bearing and cooling of the upper roller bearing are thereby achieved.
  • the branched-off part of the cryogenic delivery medium can be returned to the main delivery flow of the cryogenic delivery medium along the motor shaft and via a gap above the impeller designed as an impeller.
  • a one-piece shaft which functions both as a motor shaft and as a pump shaft, shows in DE 1 801 864 a bore extending between the roller bearings, whereby a cavity is formed in this area of the shaft.
  • a communicating connection exists between the connection piece in the cavity in the shaft. Via additional holes in the shaft, a communicating connection is also created between this cavity of the shaft and the roller bearings.
  • known centrifugal pumps have the disadvantage that a large number of pipes, ie comparatively long distances are necessary so that the branched-off part of the cryogenic medium can get to the roller bearings and back into the main flow of the cryogenic medium.
  • the object of the present invention is to provide a centrifugal pump which overcomes the disadvantages of the known prior art and in particular keeps the design of the centrifugal pump as simple as possible.
  • a centrifugal pump fulfills these tasks with the features of claim 1.
  • a first communicating connection in particular a direct connection channel, is formed between the pressure side in the pump housing and the roller bearing on the pump housing, for a branched part of the cryogenic delivery medium to the roller bearing, and a second communicating connection is formed for the branched part between the roller housing on the pump housing side and the suction side of the cryogenic delivery medium back to the suction side in the pump housing, so that circulation of the branched-off part of the cryogenic delivery medium between the pump housing and only the roller bearing on the pump housing side is ensured.
  • a direct connection channel between the pressure side in the pump housing and the roller bearing on the pump housing side is understood as the first communicating connection that, in contrast to the centrifugal pump, consists of the DE 1801864 no indirect connection is made with the roller bearing on the pump housing via the roller bearing on the drive motor side, which is further away from the impeller.
  • the cryogenic delivery medium branched off for lubrication and cooling can circulate in a comparatively small-scale circle. Losses of the branched, cryogenic delivery medium can thereby be kept low.
  • cryogenic delivery medium it is necessary for the cryogenic delivery medium not to evaporate in the region of the unlubricated roller bearing on the pump housing side, which is preferably made possible by preventing the pressure from falling below a certain minimum pressure. Evaporation of the cryogenic medium in the area of the roller bearings can damage the roller bearings.
  • a comparatively small-scale circulation circuit is advantageous since it ensures that the necessary minimum pressure is maintained by the construction.
  • liquid gases such as liquid hydrocarbons such as liquid methane, liquid nitrogen etc. can be used as the cryogenic delivery medium.
  • Liquid gas is understood to mean a gas liquefied by cooling and compression. It has been shown that liquid Hydrocarbons have good lubricating properties and are therefore particularly well suited for cryogenic lubrication.
  • An intermediate piece in the form of a housing cover is preferably located between the motor housing and the pump housing, the housing cover having a connecting channel in the form of a bore between the pressure side and the roller bearing on the pump housing side to form the first communicating connection.
  • a sealing element is preferably arranged between the housing cover on the pump housing side and the shaft in a sealing manner in order to achieve a barrier between the pump housing and the motor housing.
  • the drive motor side in the centrifugal pump according to the invention is preferably a conventional, lubricated roller bearing.
  • the sealing element serving as a barrier to the cryogenic delivery medium thus advantageously avoids the known problems that occur when the cryogenic delivery medium comes into contact with lubricated roller bearings, and also forces the branched part back into the main delivery flow of the cryogenic delivery medium via the second communicating connection.
  • the centrifugal pump according to the invention is preferably designed for use in a horizontal position and is therefore suitable for being attached, for example, to a truck (truck).
  • the motor housing preferably has an outlet bore, in particular at a point at the lowest point in use in a horizontal position, one on the outlet bore toward the suction side running pressure equalization line can be attached.
  • Such an outlet bore with a pressure compensation line attached to it advantageously allows removal of undesirable cryogenic delivery medium which is present in the motor housing and which, for example, due to an inadequate barrier effect, for example due to damage or wear of the sealing element between the pump housing-side housing cover and the shaft, has entered the motor housing.
  • Fig. 1 shows a longitudinal section through a preferred embodiment of the centrifugal pump 1 according to the invention.
  • the centrifugal pump 1 has a motor housing for an electric drive motor unit 12 and a pump housing 2 for receiving the pump elements.
  • it is a single-stage impeller pump with only one impeller 5, and it can also be a multi-stage impeller pump with several impellers 5.
  • the drive motor unit 12 has a shaft 11 which in two roller bearings 20; 21 is stored.
  • the shaft 11 is a one-piece shaft which functions both as a motor shaft and as a pump shaft.
  • a design of the centrifugal pump 1 with a shaft that is not in one piece is also conceivable, in which a motor shaft can be connected to a pump shaft via a coupling.
  • a pump wheel 5 and an impeller 6 designed as an impeller are fastened here by means of a fixing screw 7.
  • the pump wheel 5 is designed here, for example, as a spiral conveyor blade.
  • a suction flange 4 is arranged on the pump housing 2 on the inlet opening E or suction side S for the suction of the main delivery flow F H of the cryogenic delivery medium.
  • the outlet side is arranged here with an outlet flange for the discharge of the main delivery flow F H of the cryogenic delivery medium (not visible in FIG Fig. 1 ).
  • a housing cover 15 Between the motor housing 10 and the pump housing 2 there is an intermediate piece in the form of a housing cover 15, this housing cover 15 producing a fixed connection between the motor housing 10 and the pump housing 2 using suitable fixing means.
  • the housing cover 15 has an adapter and separation function.
  • the pump housing side i.e. the roller housing 21 mounted closer to the pump housing 2 or pump wheel 5.
  • an insulating disk 19 is preferably arranged between the housing cover 15 and the motor housing 10.
  • connection channel 16 is formed here in the form of a bore in the housing cover 15 and extends here, for example, between roller bearings 21 transversely outwards to an outer radial region of the pump housing 2 Fig. 1 only one connection channel 16 is shown, it being possible for one or more connection channels 16 to be present as required.
  • a pressure P 2 on the pressure side D in the outer radial region of the pump housing 2 increases compared to a pressure P 1 on the suction side S in an inner radial region of the pump housing 2 due to the centrifugal forces.
  • the pressure P 2 on the Pressure side D usually corresponds to the pressure to be achieved of the emerging main delivery flow F H of the cryogenic delivery medium.
  • a pressure gradient is formed, where: P 2 > P 1 .
  • This pressure gradient causes a part F A1 to branch off from the main delivery flow F H of the cryogenic delivery medium in the direction of the roller bearing 21 and thereby Flow or cryogenic lubrication and cooling of the roller bearing 21.
  • the circulation is ensured by the pressure gradient or the pressure difference between pressure side D and suction side S. It has been shown that a pressure gradient or a pressure difference between P 1 and P 2 of 0.8 to 8 bar can be adjustable in the centrifugal pump 1 according to the invention, this pressure gradient being able to be influenced in particular by the pump speed and the diameter of the impeller.
  • a second communicating connection is formed for the return of the branched part F A2 of the cryogenic conveying medium back to the suction side S in the pump housing 2, so that a circulation of the branched part F A1 ; F A2 of the cryogenic delivery medium between the pressure side D in the pump housing 2 via the roller housing 21 on the pump housing back to the suction side S is ensured.
  • the second communicating connection is designed in the form of at least one lower opening O 2 of the roller bearing 21 on the pump housing side and can thus reach an upper suction side S 1 .
  • the second communicating connection contains at least one bore B in the impeller 6, which is indicated here by dashed lines, as a result of which the branched part F A2 of the cryogenic delivery medium can return from an upper suction side S 1 to the suction side S. It has been shown that there is a slightly higher pressure between the upper suction side S 1 than the pressure P 1 on the suction side S, as a result of which the branched part F A2 of the cryogenic delivery medium can get back into the main delivery flow F H of the cryogenic delivery medium.
  • a ring-shaped sealing element 18, which surrounds the shaft 11, is arranged between the housing cover 15 and the shaft 11 so as to seal around a barrier between the pump housing 2 and the motor housing 10 to achieve.
  • This sealing element 18 forces - as in Fig. 1 evident in the direction facing away from the motor housing 10 - the branched-off part F A2 of the cryogenic delivery medium via the second communicating connection back into the main delivery flow F H of the cryogenic delivery medium.
  • This in Fig. 1 also has, by way of example - in addition to the sealing element 18 - a labyrinth seal 17 between the unlubricated roller bearing 21 and the sealing element 18.
  • the centrifugal pump 1 allows the branched part F A1 of the cryogenic conveying medium to flow through a gap between the labyrinth seal 17 and the roller bearing 21, so that the branched part F A1 of the cryogenic conveying medium reaches the roller bearing 21 via at least one upper opening O 1 and can be lubricated using the cryogenic fluid.
  • the centrifugal pump 1 is ideally designed or suitable to be operated in a horizontal position, ie with a horizontally oriented longitudinal axis of the shaft 11, for use on a truck, for example.
  • the centrifugal pump 1 is preferably configured such that the in Fig. 1 shown, exit bore 13 in the motor housing 10 is aligned and arranged at a lowest point viewed in the direction of gravity, whereby undesired liquid cryogenic delivery medium located in the motor housing 10 can collect at this point.
  • a pressure compensation line 14 is preferably sealingly attached to the outlet bore 13 and to a bore 3 in the suction flange 4 of the pump housing 2.
  • Such a pressure equalization line 14 is advantageous because the liquid, cryogenic delivery medium is forced out of the interior of the motor housing 10 in the direction of the suction side S at the inlet opening E.
  • Such an outlet bore 13 with a pressure compensation line 14 attached to it advantageously allows removal of liquid cryogenic that is undesirably present in the motor housing 10 Delivery medium, which has reached the motor housing 10 between the pump housing-side housing cover 15 and the shaft 11, for example due to a defective barrier effect, for example due to damage or wear of the sealing element 18.
  • the unlubricated roller bearing 21 in the housing cover 15 here comprises a plurality of balls 23, an inner race 25 and an outer race 27 each with running surfaces between which the balls 23 are arranged, in which case the balls 23 can be made of ceramic.
  • the races 25; 27 are preferably made of steel and ideally have a chrome-based coating in the area of the treads.
  • Such an unlubricated roller bearing 21 or ball bearing is also referred to as a hybrid bearing, in which for the races 25; 27 and the balls 23 (also called rolling elements) different materials are used.
  • the most common type is that of a deep groove ball bearing with conventional races 25; 27 made of steel and balls 23 made of a high-strength ceramic, mostly silicon nitride.
  • roller bearing 20 in the housing cover 9 on the drive motor side can be manufactured identically to the roller bearing 21, but for cost reasons it can also advantageously be a conventional, lubricated roller bearing.
  • the mutual spacing of the balls 23 in the unlubricated roller bearing 21 is determined by a cage (not shown in FIG Fig. 1 ) which has a separate chamber for each ball 23.
  • the inner surfaces of the chambers are preferably cylindrical and the cylinder diameter is chosen to be somewhat larger than the diameter of the balls 23, so that the balls can rotate freely in the cage.
  • this cage is made of reinforced PTFE (P oly t etra f luor e Thylen).
  • this cage can also be made of stainless steel, polyether ether ketone (PEEK), brass or any combination thereof.

Landscapes

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

Claims (11)

  1. Pompe centrifuge rotative à entraînement direct mono- ou multi-étagée (1) pour des liquides cryogéniques avec un carter de pompe (2) pour la pompe (1) et une unité motorisée d'entraînement (12) électrique, servant d'entraînement de pompe dans un carter de moteur (10),
    sachant qu'un arbre (11) de l'unité motorisée d'entraînement (12) est logé sur deux roulements, en particulier des roulements à rouleaux (20 ; 21) et sachant au moins qu'un roulement à rouleaux (20 ; 21) est un roulement à rouleaux non lubrifié,
    caractérisée en ce qu'
    au moins une première liaison communicante, en particulier un conduit de liaison direct (16), est constituée entre le côté pression (D) dans le carter de pompe (2) et le roulement à rouleaux (21) du côté carter de pompe pour une partie (FA1) dérivée du débit principal dérivé (FH) du liquide refoulé cryogénique vers le roulement à rouleaux (21), et
    en ce qu'une deuxième liaison communicante est constituée entre le roulement à rouleaux (21) côté carter de pompe et le côté aspiration (S) pour la partie (FA2) dérivée du liquide refoulé cryogénique en retour vers le côté aspiration (S) dans le débit principal (FH) du liquide refoulé cryogénique,
    de telle manière qu'une circulation de la partie (FA1 ; FA2) dérivée du liquide refoulé cryogénique est garantie entre le côté pression (D) dans le carter de pompe (2) et uniquement le roulement à rouleaux (21) du côté carter de pompe.
  2. Pompe (1) selon la revendication 1,
    caractérisée en ce qu'
    une pièce intermédiaire sous la forme d'un couvercle de carter (15) se trouve entre le carter de moteur (10) et le carter de pompe (2), sachant que le couvercle de carter (15) comporte un conduit de liaison (16) sous la forme d'un perçage entre le côté de pression (D) dans le carter de pompe (2) et le roulement à rouleaux (21) côté carter de pompe pour former la première liaison communicante.
  3. Pompe (1) selon la revendication 2,
    caractérisée en ce qu'
    un élément d'étanchéité (18) est disposé entre le couvercle de carter (15) et l'arbre (11) de façon hermétique de manière à obtenir une barrière entre le carter de pompe (2) et le carter de pompe (10).
  4. Pompe (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la pompe (1) est conçue pour l'utilisation dans une position horizontale.
  5. Pompe (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le carter de moteur (10), en particulier à un emplacement situé au plus profond lors de l'utilisation en position horizontale en direction de la force de gravité, comporte un perçage de sortie (13), sachant que sur le perçage de sortie (13) une conduite de compensation de pression (14) peut être montée entre le carter de moteur (10) et le côté aspiration (S).
  6. Pompe (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce qu'
    au moins un roulement à rouleaux (20 ; 21), en particulier le roulement à rouleaux (21) non lubrifié, côté carter de pompe, est un roulement hybride en matériaux à faible frottement.
  7. Pompe (1) selon la revendication 6,
    caractérisée en ce que
    les chemins de roulement intérieurs et extérieurs (24 ; 25 ; 26 ; 27) des roulements à rouleaux (20 ; 21), en particulier du roulement à rouleaux (21) du côté carter de pompe, sont fabriqués en acier et comportent dans la zone des surfaces de contact un revêtement à base de chrome, et les sphères (22 ; 23) des roulements à rouleaux (20 ; 21), en particulier du roulement à rouleaux (21) du côté carter de pompe, sont fabriquées en céramique, en particulier en nitrure de silicium (Si3N4) .
  8. Pompe (1) selon la revendication 7,
    caractérisée en ce que
    les roulements à rouleaux (20 ; 21), en particulier le roulement à rouleaux (21) du côté carter de pompe, comprennent une cage destinée à la sollicitation réciproque des sphères (22 ; 23), sachant qu'une chambre séparée est créée par la cage pour chaque sphère (22 ; 23) et sachant que la cage est fabriquée à cet effet en polytétrafluoréthylène (PTFE) renforcé, en acier spécial ou en polyétheréthercétone (PEEC) ou en laiton ou dans des combinaisons quelconques.
  9. Procédé pour faire fonctionner une pompe (1) selon l'une quelconque des revendications précédentes, comprenant au moins les étapes de procédé :
    mise en service de la pompe (1) pour accélérer un débit principal (FH) du liquide refoulé cryogénique de l'orifice d'entrée (E) vers l'orifice de sortie (A),
    caractérisé en ce que
    pendant le fonctionnement, une partie (FA1) dérivée du débit principal (FH) de liquide refoulé cryogénique vers le roulement à rouleaux (21) entre le côté pression (D) dans le carter de pompe (2) et le roulement à rouleaux (21) du côté carter de pompe est guidée par le biais d'au moins une première liaison communicante, en particulier un conduit de liaison direct (16), et
    en ce que la partie (FA2) du liquide refoulé cryogénique en retour vers le côté aspiration (S) dans le débit principal (FH) du liquide refoulé cryogénique est guidée par le biais d'une deuxième liaison communicante constituée entre le roulement à rouleaux (21) du côté carter de pompe et le côté aspiration (S),
    de telle manière qu'une circulation de la partie (FA1 ; FA2) dérivée du liquide refoulé cryogénique est garantie entre le côté pression (D) dans le carter de pompe (2) et uniquement le roulement à rouleaux (21) du côté carter de pompe.
  10. Procédé selon la revendication 9,
    caractérisé en ce que
    pendant le fonctionnement de la pompe centrifuge (1), une pression (P2) augmente en raison des forces centrifuges sur le côté de pression (D) dans une zone radiale extérieure du carter de pompe (2) par rapport à une pression (P1) pour le roulement à rouleaux (21) disposé dans une zone radiale intérieure du carter de pompe (2) de telle manière que ce gradient de pression entraîne une dérivation d'une partie (FA1) du débit principal (FH) du liquide refoulé cryogénique en direction du roulement à rouleaux (21) par le biais d'au moins une première liaison communicante et de ce fait une traversée ou une lubrification cryogénique et un refroidissement du roulement à rouleaux (21).
  11. Procédé selon l'une quelconque des revendications 9 ou 10,
    caractérisé en ce que
    la pompe (1) est installée dans une position horizontale pour la mise en service.
EP18192242.8A 2017-09-19 2018-09-03 Pompe centrifuge pour milieux de transport cryogéniques Active EP3460246B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01152/17A CH714176A1 (de) 2017-09-19 2017-09-19 Zentrifugalpumpe für kryogene Fördermedien.

Publications (2)

Publication Number Publication Date
EP3460246A1 EP3460246A1 (fr) 2019-03-27
EP3460246B1 true EP3460246B1 (fr) 2020-05-27

Family

ID=63490322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18192242.8A Active EP3460246B1 (fr) 2017-09-19 2018-09-03 Pompe centrifuge pour milieux de transport cryogéniques

Country Status (4)

Country Link
US (1) US10954952B2 (fr)
EP (1) EP3460246B1 (fr)
CN (1) CN209800276U (fr)
CH (1) CH714176A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024155997A1 (fr) * 2023-01-20 2024-07-25 Fourth Power, Inc. Pompe de circulation en matériau cassant

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH389409A (de) * 1960-12-05 1965-03-15 Lederle Pumpen & Maschf Durch einen Spaltrohrmotor angetriebene, mehrstufige Kreiselpumpe
US3369715A (en) * 1966-05-10 1968-02-20 J C Carter Company Submerged pumping system
US3494291A (en) 1967-10-13 1970-02-10 Air Reduction Bearing assembly
FR2032189A5 (fr) * 1969-02-21 1970-11-20 Guinard Pompes
US3652186A (en) 1970-05-25 1972-03-28 Carter Co J C Pressure lubricated, cooled and thrust balanced pump and motor unit
US3975117A (en) * 1974-09-27 1976-08-17 James Coolidge Carter Pump and motor unit with inducer at one end and centrifugal impeller at opposite end of the motor
JPS51111902A (en) * 1975-03-26 1976-10-02 Iwaki:Kk Magnet pump
JPS5958197A (ja) * 1982-09-28 1984-04-03 Nikkiso Co Ltd キヤンドモ−タポンプ
US4684329A (en) * 1985-01-08 1987-08-04 Nikkiso Co., Ltd. Canned motor pump
DE3718560A1 (de) * 1987-06-03 1988-12-22 Uhde Gmbh Trockenlauffaehige waelzlager
US5248245A (en) * 1992-11-02 1993-09-28 Ingersoll-Dresser Pump Company Magnetically coupled centrifugal pump with improved casting and lubrication
US6722854B2 (en) * 2001-01-24 2004-04-20 Sundyne Corporation Canned pump with ultrasonic bubble detector
AU2009351363B2 (en) * 2009-08-18 2014-09-25 Halliburton Energy Services, Inc. Apparatus for downhole power generation
JP5421826B2 (ja) * 2010-03-10 2014-02-19 大陽日酸株式会社 低温液化ガスポンプ
KR101305671B1 (ko) * 2011-11-29 2013-09-09 현대자동차주식회사 전동식 워터펌프
JP2014020491A (ja) 2012-07-19 2014-02-03 Nsk Ltd アンギュラ玉軸受及び液化ガス用ポンプ装置
US10267315B2 (en) * 2013-11-28 2019-04-23 Acd, Llc Cryogenic submerged pump for LNG, light hydrocarbon and other electrically non-conducting and non-corrosive fluids
US20160090864A1 (en) * 2014-09-26 2016-03-31 Ebara International Corporation Multi-fluid cargo pumps
JP2017150593A (ja) * 2016-02-25 2017-08-31 Ntn株式会社 極低温環境用転がり軸受

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3460246A1 (fr) 2019-03-27
US20190085858A1 (en) 2019-03-21
US10954952B2 (en) 2021-03-23
CH714176A1 (de) 2019-03-29
CN209800276U (zh) 2019-12-17

Similar Documents

Publication Publication Date Title
EP3433496A1 (fr) Pompe à entraînement magnétique
DE1801864A1 (de) Waelzlager,insbesondere zum Einbau in Tauchpumpen fuer tiefkalte Fluessigkeiten
EP2600005B1 (fr) Pompe à vide avec palier à roulement sans cage
DE10256086A1 (de) Kugellager und mit einem Lager dieser Art ausgerüstete Vakuumpumpe
EP2557316A2 (fr) Pompe à vide
DE19647937B4 (de) Wälzlager
DE29610799U1 (de) Hydrodynamisches Gleitlager für einen Läufer einer Pumpe
EP3483448B1 (fr) Pompe à vide pourvue de soupape de gaz de ballast
EP3460246B1 (fr) Pompe centrifuge pour milieux de transport cryogéniques
EP3140572B1 (fr) Ensemble de garniture d'étanchéité à bagues de glissement ayant une séparation de gaz améliorée
DE1653664A1 (de) Selbstansaugende Zentrifugalpumpe
DE102019206205B3 (de) Gleitringdichtungsanordnung, insbesondere für heiße Medien, sowie Pumpenanordnung
DE102016204519A1 (de) Nasslaufendes Zugmittelgetriebe
DE102016211569A1 (de) Lageranordnung für einen Turbolader
EP0135730B1 (fr) Palier lisse hydrodynamique à auto-pompage
EP3207267B1 (fr) Ensemble de roulement pour un dispositif de sondage et de forage
DE102016124283A1 (de) Hydrodynamische Kupplung
EP0942172B1 (fr) Pompe à vide à arbres d'entraínements multiples
EP2927500B1 (fr) Procédé et système d'alimentation d'une disposition de palier
EP2910790A1 (fr) Lubrification de palier de pompe à vide autorisant différentes orientations de la pompe
EP2791521B1 (fr) Arbre vertical muni d'un palier lisse pour une turbine ou un générateur
DE102017106942A1 (de) Hydrodynamische Kupplung
DE102009017037B4 (de) Compressor
DE102018112492B3 (de) Schraubenspindelpumpe
DE102015202636A1 (de) Förderaggregat für ein Kraftstoffeinspritzsystem sowie Kraftstoffeinspritzsystem

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190808

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: F04D 29/06 20060101ALI20191119BHEP

Ipc: F04D 29/049 20060101ALI20191119BHEP

Ipc: F04D 1/02 20060101AFI20191119BHEP

Ipc: F04D 7/02 20060101ALI20191119BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200103

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1274826

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200615

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018001526

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCHNEIDER FELDMANN AG PATENT- UND MARKENANWAEL, CH

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: FIVES CRYOMEC AG, CH

Free format text: FORMER OWNER: FIVES CRYOMEC AG, CH

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200828

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200827

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200928

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200927

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200827

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502018001526

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20210302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200903

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200903

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20220903

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220903

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20231001

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240820

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240820

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240820

Year of fee payment: 7