EP0075100B1 - Pompe centrifuge à plusieurs étages - Google Patents

Pompe centrifuge à plusieurs étages Download PDF

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Publication number
EP0075100B1
EP0075100B1 EP82107260A EP82107260A EP0075100B1 EP 0075100 B1 EP0075100 B1 EP 0075100B1 EP 82107260 A EP82107260 A EP 82107260A EP 82107260 A EP82107260 A EP 82107260A EP 0075100 B1 EP0075100 B1 EP 0075100B1
Authority
EP
European Patent Office
Prior art keywords
container
pump
centrifugal pump
housing
pump according
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.)
Expired
Application number
EP82107260A
Other languages
German (de)
English (en)
Other versions
EP0075100A1 (fr
EP0075100B2 (fr
Inventor
Wilfried Dr.Ing. Lehmann
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.)
Sihi GmbH and Co KG
Original Assignee
Sihi GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6141422&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0075100(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sihi GmbH and Co KG filed Critical Sihi GmbH and Co KG
Priority to AT82107260T priority Critical patent/ATE12814T1/de
Publication of EP0075100A1 publication Critical patent/EP0075100A1/fr
Application granted granted Critical
Publication of EP0075100B1 publication Critical patent/EP0075100B1/fr
Publication of EP0075100B2 publication Critical patent/EP0075100B2/fr
Expired legal-status Critical Current

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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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially 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
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/02—Self-priming pumps

Definitions

  • the invention relates to a multi-stage centrifugal pump with a vertical shaft and a link housing comprising a plurality of housing members, in particular for conveying liquids near their boiling point, which is immersed with its lower, suction-side end in a pot for the supply of the liquid, above which the pump drive and the Line connections are accessible.
  • a pump for the circulation of a medium under high pressure, which has all the pump stages within a pressure-resistant housing, which consists of a pot-like, the pump-receiving lower part and an upper part receiving the drive overlapping pump housing which is connected to the pressure-resistant housing by means of an annular flange arranged thereon.
  • the invention has for its object to provide a centrifugal pump, which allows the improvement of the inlet conditions for the delivery of liquids near their boiling point with simple means using series pumps.
  • the solution according to the invention consists in that an annular flange for connecting the pump to the pot is arranged on the housing member of the second or a further pump stage.
  • the ring flange is preferably arranged on the housing member of the last or penultimate stage so that the pump protrudes as deeply as possible into the pot.
  • the ring flange itself can form the lid of the pot. It is useful to arrange the inlet connection for the pot on the lid. Either the inlet connector can be directly connected to the lid (for example welded), or an attachment option for the inlet connector is provided on the lid.
  • the liquid calming can be improved even further according to the invention by arranging flow guide ribs in the pot, which preferably run away from the pot lid.
  • the arrangement of flow guide ribs is particularly expedient when the pump is not arranged centrally in the pot.
  • the distance between the pump inlet and the wall of the pot opposite the pump inlet should be at least equal to the diameter of the pump inlet.
  • This cover carries the pump 2 with a vertical axis by being designed as a housing member 6 of the third stage of a total of four pump stages.
  • This design has the advantage that the pump is held in the cover in the simplest manner in such a way that the pump inlet 3 dips relatively deep into the pot.
  • that of the fourth stage 4 could also be designed as a pot lid if the flange of the pressure connection 5 offers sufficient space for it.
  • this is arranged above the cover 7 and thus above the floor in which the pot 1 is lowered and is therefore freely accessible for assembly and maintenance.
  • the cover 7 contains a fixed connection to the inlet pipe elbow 8, the connecting flange of which is also above the level of the pot cover 7 lies.
  • the outlet opening 9 of the nozzle 8 is rounded like a diffuser to reduce the flow losses. In the vicinity of this outlet opening - but possibly also in other areas of the pot 1 - flow guide ribs, one of which is indicated by dash-dotted lines, can be provided to calm the conveying medium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Non-Positive Displacement Air Blowers (AREA)

Claims (7)

1. Pompe centrifuge à plusieurs étages, à arbre vertical et à carter sectionné (2) comprenant plusieurs éléments, en particulier pour le refoulement de liquides au voisinage de leur point d'ébullition, pompe qui plonge, par son extrémité inférieure (3) du côté aspiration, dans un pot (1) dans lequel arrive le liquide et au-dessus duquel le mécanisme d'entraînement de la pompe et les raccords de tuyauterie (5, 8) sont accessibles, caractérisée en ce qu'il est disposé, sur l'élément de carter (6) du deuxième ou d'un étage ultérieur de la pompe, une bride annulaire (7) pour l'assemblage entre la pompe et le pot (1).
2. Pompe centrifuge selon la revendication 1, caractérisée en ce que la bride annulaire (7) est disposée sur l'élément de carter (4, 6) du dernier ou de l'avant-dernier étage.
3. Pompe centrifuge selon la revendication 1 ou 2, caractérisée en ce que la bride annulaire (7) est réalisée sous forme de couvercle du pot (1
4. Pompe centrifuge selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la tubulure d'entrée (8) est disposée sur le couvercle (7) du pot (1).
5. Pompe centrifuge selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le pot contient des ailettes directrices du courant.
6. Pompe centrifuge selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'entrée (9) dans le pot (1) est réalisée sous forme arrondie pour jouer le rôle de diffuseur.
7. Pompe centrifuge selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la distance entre l'entrée de pompe (3) et la paroi (10) du pot (1) située en face de celle-ci est au moins égale au diamètre de l'entrée de pompe.
EP82107260A 1981-09-11 1982-08-11 Pompe centrifuge à plusieurs étages Expired EP0075100B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107260T ATE12814T1 (de) 1981-09-11 1982-08-11 Mehrstufige kreiselpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813136116 DE3136116A1 (de) 1981-09-11 1981-09-11 Mehrstufige kreiselpumpe
DE3136116 1981-09-11

Publications (3)

Publication Number Publication Date
EP0075100A1 EP0075100A1 (fr) 1983-03-30
EP0075100B1 true EP0075100B1 (fr) 1985-04-17
EP0075100B2 EP0075100B2 (fr) 1988-10-12

Family

ID=6141422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107260A Expired EP0075100B2 (fr) 1981-09-11 1982-08-11 Pompe centrifuge à plusieurs étages

Country Status (9)

Country Link
EP (1) EP0075100B2 (fr)
AT (1) ATE12814T1 (fr)
AU (1) AU8750182A (fr)
DE (2) DE3136116A1 (fr)
DK (1) DK405282A (fr)
ES (1) ES276130Y (fr)
NO (1) NO822996L (fr)
NZ (1) NZ201627A (fr)
ZA (1) ZA825936B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104481889B (zh) * 2014-12-22 2017-01-04 邓伟 一种即开节能立式自吸泵

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE725506C (de) * 1940-01-12 1942-09-23 Wilhelm Beck Dipl Ing Selbstansaugende Kreiselpumpe
US2514865A (en) * 1945-04-13 1950-07-11 Ingersoll Rand Co Pumping unit
GB701511A (en) * 1949-11-01 1953-12-30 Hayward Tyler & Co Ltd Improvements in and relating to pump and motor combinations
FR2044994A5 (fr) * 1969-05-29 1971-02-26 Guinard Pompes

Also Published As

Publication number Publication date
EP0075100A1 (fr) 1983-03-30
ZA825936B (en) 1983-07-27
DK405282A (da) 1983-03-12
ES276130Y (es) 1984-12-16
ATE12814T1 (de) 1985-05-15
DE3263132D1 (en) 1985-05-23
EP0075100B2 (fr) 1988-10-12
AU8750182A (en) 1983-03-17
DE3136116A1 (de) 1983-03-31
NZ201627A (en) 1985-04-30
NO822996L (no) 1983-03-14
ES276130U (es) 1984-05-01

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