Method and apparatus for mounting pumps within a suction vessel
a technology of suction vessel and suction pump, which is applied in the direction of piston pump, positive displacement liquid engine, liquid fuel engine, etc., can solve the problems of large footprint of parallel configuration, large space requirements, and difficulty in certain areas to achieve spa
Inactive Publication Date: 2006-06-08
NIKKISO COMPANY
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Benefits of technology
The patent text describes a system and method for pumping fluid from a pressure vessel using submersible electric motor pumps. The system includes a pressure vessel, at least two motor-pump assemblies located within the pressure vessel, each with a submersible electric motor and a submersible pump in operable communication with the motor. The submersible pump is configured to pump fluid from within the pressure vessel to without the pressure vessel. The method involves supplying a fluid to the pressure vessel, pumping it with the submersible electric motor pumps, and discharging the pumped fluid from the pressure vessel. The technical effects of the patent text include improved pumping efficiency, reduced energy consumption, and reduced noise levels.
Problems solved by technology
The footprint of such a parallel configuration is very large and requires much space.
This space may be difficult to come by in certain applications, such as applications on board ships and / or off shore platforms, or floating storage and regasification vessels (FSRV).
Method used
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[0015] The disclosed pressure vessel mounted submerged electric motor pump system comprises two or more pumps within one pressure vessel. No other known pressure vessel pump system for cryogenic liquefied gas has two or more pumps within one pressure vessel. Advantages of having two or more pumps within one pressure vessel is that suction piping and vent piping are simplified, and cost and space required are reduced. Submerged electric motor pump systems with two or more pumps within one pressure vessel will have a smaller footprint than two or more pressure vessel and submerged electric motor pump systems. This smaller footprint is especially advantageous where space is at a premium, such as, but not limited to, offshore platforms, and shipboard installations. Additionally, since there is only one pressure vessel, as opposed to two or more pressure vessels, there only needs to be one set of pressure vessel piping, as opposed to two or more sets of pressure vessel suction and vent p...
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A pressure vessel and submerged electric motor pump system may include a pressure vessel and at least two motor-pump assemblies located within the pressure vessel. Each of the at least two motor-pump assemblies may include a submersible electric motor and a submersible pump in operable communication with the submersible electrical motor. The submersible pump may be configured to pump fluid from within the pressure vessel to without the pressure vessel. A method for pumping a fluid from a pressure vessel may include supplying a fluid to a pressure vessel, pumping the fluid with two or more submersible electric motor pumps located within the pressure vessel and discharging a pumped fluid from the pressure vessel.
Description
BACKGROUND [0001] This invention relates generally to submerged electric motor pumps, and, more particularly, this invention relates to submerged electric motor pumps having a unique pressure vessel design. [0002] Submerged electric motor pumps mounted in their own suction or pressure vessels have found use in a variety of industries. Some uses include, but are not limited to, the pumping of cryogenic fluids such as liquid natural gas, and also corrosive and / or hazardous liquids. A typical configuration of a pressure vessel mounted submerged electric motor pump is one that has a centrifugal pump and motor assembly installed in a pressure vessel, with the pressure vessel filled with the liquid being pumped. The vessel may be any material but typically is stainless steel, and designed and fabricated in accordance with the appropriate pressure vessel code, Section VIII of the ASME Pressure Vessel Code in the USA, for instance. [0003]FIG. 1 shows a known pressure vessel and submerged el...
Claims
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IPC IPC(8): F04B17/00F04B35/04
CPCF04D1/063F04D13/08F04D29/426F04D29/606
Inventor HAESLOOP, WILLIAM G.
Owner NIKKISO COMPANY