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1. WO1997027403 - IMPROVEMENTS IN AN UNLOADING PUMP WHICH IS SUBMERSIBLE IN THE CARGO OF A SHIP'S CARGO TANK

Publication Number WO/1997/027403
Publication Date 31.07.1997
International Application No. PCT/NO1996/000286
International Filing Date 09.12.1996
Chapter 2 Demand Filed 06.08.1997
IPC
F04D 13/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
13Pumping installations or systems
02Units comprising pumps and their driving means
06the pump being electrically driven
08for submerged use
F04D 29/22 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
18Rotors
22specially for centrifugal pumps
CPC
F04D 13/086
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
13Pumping installations or systems
02Units comprising pumps and their driving means
06the pump being electrically driven
08for submerged use
086the pump and drive motor are both submerged
F04D 29/2277
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
18Rotors
22specially for centrifugal pumps
2261with special measures
2277for increasing NPSH or dealing with liquids near boiling-point
Applicants
  • FRANK MOHN FUSA A/S [NO]/[NO] (AllExceptUS)
  • DALEN, Erik [NO]/[NO] (UsOnly)
Inventors
  • DALEN, Erik
Agents
  • A/S BERGEN PATENTKONTOR
Priority Data
96031826.01.1996NO
Publication Language English (EN)
Filing Language Norvegian (NO)
Designated States
Title
(EN) IMPROVEMENTS IN AN UNLOADING PUMP WHICH IS SUBMERSIBLE IN THE CARGO OF A SHIP'S CARGO TANK
(FR) AMELIORATIONS APPORTEES A UNE POMPE DE DECHARGEMENT SUBMERSIBLE DANS LA CARGAISON D'UNE CITERNE A CARGAISONS D'UN BATEAU
Abstract
(EN)
An unloading pump arrangement has a pump inlet (13) arranged in a well (12) at the bottom of a cargo tank. The unloading pump comprises a main pump (14a) and an auxiliary pump (30'') which is drive connected to impeller (15) of the main pump (14a). The unloading pump has a discharge pipe to a delivery location via the deck of the ship. The auxiliary pump (30''), which has the form of a part conical sleeve portion or bell portion, has maximum radially internal and external dimensions at the upper discharge end (at 38) of the auxiliary pump (30'') and minimum radially internal and external dimensions at the lower inlet end of the auxiliary pump (30''). The internal flow passage (39) of the auxiliary pump (30'') comprises an upper discharge chamber (38) and a number of outlet openings (40''), which empty directly out from the periphery of the discharge chamber (38) at the height of the flow-through passage (41) of the impeller (15).
(FR)
Un ensemble pompe de déchargement comporte un orifice d'entrée (13) de pompe disposé dans un puisard (12) au fond d'une citerne à cargaisons. La pompe est constituée d'une pompe principale (14a) et d'une pompe auxiliaire (30'') dont l'entraînement est relié à une turbine (15) de la pompe principale (14a). Elle comporte un tuyau d'évacuation destiné à un site de distribution via le pont du bateau. La pompe auxiliaire (30''), qui a la forme d'une partie manchon ou d'une partie cloche partiellement conique, possède des dimensions radiales internes et externes maximum au niveau de l'extrémité supérieure d'évacuation (38) de la pompe auxiliaire (30''), et des dimensions radiales internes et externes minimum au niveau de l'extrémité inférieure de l'orifice d'entrée de la pompe auxiliaire (30''). Le passage d'écoulement interne (39) de la pompe auxiliaire (30'') comprend une chambre d'évacuation supérieure (38) et un certain nombre d'orifices de sortie (40''), qui se vident directement depuis la périphérie de la chambre d'évacuation (38) à la hauteur du passage à écoulement direct (41) de la turbine (15).
Also published as
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