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1. AU1997014013 - Improvements in an unloading pump which is submersible in the cargo of a ship's cargo tank

Office
Australia
Application Number 14013/97
Application Date 09.12.1996
Publication Number 1997014013
Publication Date 09.10.1997
Publication Kind A
IPC
F04D 13/08
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
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
Inventors Dalen, Erik
Priority Data 960318 26.01.1996 NO
Title
(EN) Improvements in an unloading pump which is submersible in the cargo of a ship's cargo tank
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).

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