US20170261004A1 - Centrifugal pressure booster and method for modifying or constructing a centrifugal pressure booster - Google Patents

Centrifugal pressure booster and method for modifying or constructing a centrifugal pressure booster Download PDF

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Publication number
US20170261004A1
US20170261004A1 US15/528,558 US201515528558A US2017261004A1 US 20170261004 A1 US20170261004 A1 US 20170261004A1 US 201515528558 A US201515528558 A US 201515528558A US 2017261004 A1 US2017261004 A1 US 2017261004A1
Authority
US
United States
Prior art keywords
rotor
pressure booster
stator gap
gap
centrifugal pressure
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.)
Abandoned
Application number
US15/528,558
Other languages
English (en)
Inventor
Åge Hofstad
Tarje Olderheim
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.)
Aker Solutions AS
Original Assignee
Aker Solutions AS
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 Aker Solutions AS filed Critical Aker Solutions AS
Assigned to AKER SOLUTIONS AS reassignment AKER SOLUTIONS AS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOFSTAD, Åge, OLDERHEIM, TARJE
Publication of US20170261004A1 publication Critical patent/US20170261004A1/en
Abandoned 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
    • 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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D13/0653—Units comprising pumps and their driving means the pump being electrically driven the motor being flooded
    • 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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • 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
    • F04D13/12—Combinations of two or more 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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0686—Units comprising pumps and their driving means the pump being electrically driven specially adapted for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • 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
    • F04D29/18—Rotors
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Definitions

  • the invention relates to centrifugal pumps and compressors, for convenience also termed pressure boosters in this document. More specifically, the invention relates to improved cooling of a pressure booster, which enhances the maximum power and speed and prolong the service life of the pressure booster.
  • Motors for pumps or compressors are normally liquid filled.
  • the friction in general follows a power of three of the velocity. The friction generates heat, restricting the maximum power rating and rotations per minute and shortening the service life of the pressure booster.
  • the objective of the present invention is to provide enhanced maximum power and speed and prolong the service life of a pressure booster. None of the publications mentioned above describes or illustrates an improved or alternative cooling in a centrifugal pressure booster as a means to meet said objective.
  • the invention meets the objective by providing a centrifugal pressure booster, for pressure boosting liquids, multiphase fluid or gas, the pressure booster comprising a liquid filled electric motor with a stator and a rotor, with a rotor stator gap between the rotor and stator, a pressure boosting part in the form of a pump or compressor operatively coupled to the rotor, and at least one housing, one fluid inlet and one fluid outlet.
  • the pressure booster is distinctive in that it comprises a rotor stator gap coolant inlet pump, for enhancing the coolant flow through the rotor stator gap.
  • the rotor stator gap coolant inlet pump is a combined balancing ring and impeller, having outer diameter larger than the inner diameter of the rotor stator gap but smaller than the outer diameter of the rotor stator gap, said combined balancing ring and impeller has outlet for coolant directly into the rotor stator gap.
  • the outer impeller diameter can be larger than the outer diameter of the rotor stator gap, if a slightly larger diameter external cover or similar directs the flow into the rotor stator gap.
  • the impeller outer diameter can be smaller than the inner diameter of the rotor stator gap, if an external cover or similar directs the flow into the rotor stator gap, which can be a favourable embodiment if cavitation is a possible problem.
  • the balancing device and impeller is ring shaped.
  • a balancing device also called balance device, balance ring or balance disc, is used to minimize vibrations and any other possible effects by small misalignments on the shaft where it is attached, by fine tuning weight or extent of material around the rotational axis.
  • the invention also provides use of a rotor stator gap coolant inlet pump in a pressure booster, preferably a subsea pressure booster, for enhancing the coolant flow through a rotor stator gap of the pressure booster.
  • the invention provides balancing of the flow rate through the stator windings and the rotor-stator gap, which will have very different frictional characteristics and hence different pressure drops.
  • the invention ensures that at all relevant rotational speeds, both the stator windings and the rotor-stator gap have sufficient liquid coolant flow, providing enhanced maximum power and speed and prolonged service life of the pressure booster of the invention.
  • Said inlet pump rotates with the rotor, without disturbing the rotor stator gap flow by increasing the friction, thereby solving what is assumed to be a major problem with prior art devices with vanes in all of or at least in a significant length along the rotor stator gap.
  • a “rotor stator gap coolant inlet pump” in this context means vanes or blades or similar structural elements arranged at the motor stator gap inlet, as well as impellers with at least one blade, arranged not into the motor stator gap as seen in radial direction, but at the inlet thereof, just outside the gap. This means that the coolant flow exits directly from the outlet of said inlet pump into said gap inlet and said inlet pump is arranged adjacent to said gap, which is just besides the radial motor stator gap without any significant axial distance between, for enhancing the coolant flow through the rotor stator gap.
  • Axial means parallel to the rotor rotation axis
  • radial means radial to the rotor rotation axis.
  • an “impeller” it is in this context meant a device typically having a radial fluid displacement component upon rotation, as provided by having at least one blade or fluid conduit.
  • the fluid inlet of an impeller typically is nearer the rotation axis than the fluid outlet.
  • a “blade” or “vane” it is meant an axial fluid displacement component shaped as a blade or similar, as seen in the prior art publications, but for the present invention not arranged in the rotor stator gap.
  • the rotor stator gap coolant inlet pump may however comprise elements of any operative kind providing pumping effect when rotating.
  • the coolant of the motor of the pressure boosters of the invention is a liquid
  • the rotor stator gap has in substance smooth, even surfaces, without rotor blades as seen in prior art solutions
  • the pressure booster typically operates at high speed and power, such as 2000-6000 rpm (rotations per minute) and power counted in megawatts.
  • the blades or vanes are angled or skew in order to provide pumping effect upon rotation.
  • the blades are optimized with respect to shape and number for sufficient pumping effect at the intended operating conditions, such as a rotation speed of 6000 rpm.
  • the at least one blade is made with an angle to the tangential direction, so upon rotating the pump or impeller device, as attached to the rotor laminations or rotor shaft or both, a predictable coolant flow component parallel to the rotation axis is generated, enhancing coolant flow through the rotor stator gap.
  • FIG. 1 illustrates a subsea pressure booster of the invention, with a combined balancing device and rotor stator gap circulation impeller.
  • FIG. 2 is an illustration of a detail of a subsea pressure booster of the invention.
  • the centrifugal subsea pressure booster of the invention can include any feature or step as here illustrated or described, in any operative combination, each such combination is an embodiment of the invention.
  • the method of the invention can include any feature or step as here illustrated or described, in any operative combination, each such combination is an embodiment of the invention.
  • the use of the invention can include any feature or step as here illustrated or described, in any operative combination, each such combination is an embodiment of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Measuring Fluid Pressure (AREA)
US15/528,558 2014-12-16 2015-12-15 Centrifugal pressure booster and method for modifying or constructing a centrifugal pressure booster Abandoned US20170261004A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20141512A NO339417B1 (no) 2014-12-16 2014-12-16 Sentrifugaltrykkforsterker og fremgangsmåte for modifisering eller konstruksjon av en sentrifugaltrykkforsterker
NO20141512 2014-12-16
PCT/NO2015/050245 WO2016099283A1 (en) 2014-12-16 2015-12-15 Centrifugal pressure booster and method for modifying or constructing a centrifugal pressure booster

Publications (1)

Publication Number Publication Date
US20170261004A1 true US20170261004A1 (en) 2017-09-14

Family

ID=56127023

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/528,558 Abandoned US20170261004A1 (en) 2014-12-16 2015-12-15 Centrifugal pressure booster and method for modifying or constructing a centrifugal pressure booster

Country Status (6)

Country Link
US (1) US20170261004A1 (pt)
AU (1) AU2015363802B2 (pt)
BR (1) BR112017011745B1 (pt)
GB (1) GB2547611B (pt)
NO (1) NO339417B1 (pt)
WO (1) WO2016099283A1 (pt)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114526244A (zh) * 2022-01-26 2022-05-24 清华大学 屏蔽式旋转流体机械
US20220252071A1 (en) * 2021-02-09 2022-08-11 Onesubsea Ip Uk Limited Subsea electric fluid processing machine
US20220252070A1 (en) * 2021-02-09 2022-08-11 Onesubsea Ip Uk Limited Subsea electric fluid processing machine
CN114992017A (zh) * 2022-06-20 2022-09-02 青岛双瑞海洋环境工程股份有限公司 船用氨燃料供应系统的换热增压装置、系统及方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108880022B (zh) * 2018-06-19 2020-05-12 清华大学 一种外转子自循环液冷永磁电机
CN112628161A (zh) * 2020-11-18 2021-04-09 靳普 一种风冷压气机

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US20090232664A1 (en) * 2008-03-12 2009-09-17 General Electric Permanent magnet motor for subsea pump drive
US8523540B2 (en) * 2007-04-12 2013-09-03 Framo Engineering As Fluid pump system
US20150326094A1 (en) * 2012-09-12 2015-11-12 Christopher E. Cunningham Subsea Compressor or Pump with Hermetically Sealed Electric Motor and with Magnetic Coupling

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KR101498689B1 (ko) * 2012-02-07 2015-03-04 존슨 컨트롤스 테크놀러지 컴퍼니 밀폐 모터 냉각 및 제어

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US8523540B2 (en) * 2007-04-12 2013-09-03 Framo Engineering As Fluid pump system
US20090232664A1 (en) * 2008-03-12 2009-09-17 General Electric Permanent magnet motor for subsea pump drive
US20150326094A1 (en) * 2012-09-12 2015-11-12 Christopher E. Cunningham Subsea Compressor or Pump with Hermetically Sealed Electric Motor and with Magnetic Coupling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220252071A1 (en) * 2021-02-09 2022-08-11 Onesubsea Ip Uk Limited Subsea electric fluid processing machine
US20220252070A1 (en) * 2021-02-09 2022-08-11 Onesubsea Ip Uk Limited Subsea electric fluid processing machine
CN114526244A (zh) * 2022-01-26 2022-05-24 清华大学 屏蔽式旋转流体机械
CN114992017A (zh) * 2022-06-20 2022-09-02 青岛双瑞海洋环境工程股份有限公司 船用氨燃料供应系统的换热增压装置、系统及方法

Also Published As

Publication number Publication date
WO2016099283A1 (en) 2016-06-23
NO20141512A1 (no) 2016-06-17
GB201709430D0 (en) 2017-07-26
BR112017011745A2 (pt) 2018-02-20
GB2547611B (en) 2020-08-19
BR112017011745B1 (pt) 2022-09-20
NO339417B1 (no) 2016-12-12
AU2015363802A1 (en) 2017-07-06
AU2015363802B2 (en) 2019-03-28
GB2547611A (en) 2017-08-23

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