GB201002411D0 - Lubrication of screw machines - Google Patents

Lubrication of screw machines

Info

Publication number
GB201002411D0
GB201002411D0 GBGB1002411.5A GB201002411A GB201002411D0 GB 201002411 D0 GB201002411 D0 GB 201002411D0 GB 201002411 A GB201002411 A GB 201002411A GB 201002411 D0 GB201002411 D0 GB 201002411D0
Authority
GB
United Kingdom
Prior art keywords
lubrication
rotors
screw machines
liquid phase
working fluid
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.)
Granted
Application number
GBGB1002411.5A
Other versions
GB2477777B (en
GB2477777A (en
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.)
City University of London
Original Assignee
City University of London
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 City University of London filed Critical City University of London
Priority to GB1002411.5A priority Critical patent/GB2477777B/en
Publication of GB201002411D0 publication Critical patent/GB201002411D0/en
Priority to KR1020127023865A priority patent/KR20120140659A/en
Priority to CN201180018654.1A priority patent/CN102834618B/en
Priority to US13/578,348 priority patent/US20130052072A1/en
Priority to PCT/GB2011/050275 priority patent/WO2011098835A2/en
Priority to JP2012552480A priority patent/JP5964245B2/en
Priority to EP11709168A priority patent/EP2534339A2/en
Publication of GB2477777A publication Critical patent/GB2477777A/en
Application granted granted Critical
Publication of GB2477777B publication Critical patent/GB2477777B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N15/00—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions
    • F16N15/04—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions with water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F01C1/16—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/04—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/04—Lubrication
    • F01C21/045—Control systems for the circulation of the lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/005—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for the working fluid being steam, created by combustion of hydrogen with oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/04—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for the fluid being in different phases, e.g. foamed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0088—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/36—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • F01C1/084—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/24—Fluid mixed, e.g. two-phase fluid
    • F04C2210/242—Steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/91—Coating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/52—Bearings for assemblies with supports on both sides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/54—Hydrostatic or hydrodynamic bearing assemblies specially adapted for rotary positive displacement pumps or compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/14—Self lubricating materials; Solid lubricants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/14—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load specially adapted for operating in water

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A screw machine for use with a working fluid with a liquid phase present comprises rotors having meshed, lubricated helical formations. The rotors have an N profile as disclosed in WO 97/43550. In use, lubrication of the helical formations of the rotors and optionally of the rotor bearings is achieved substantially exclusively with the liquid phase of the working fluid.
GB1002411.5A 2010-02-12 2010-02-12 Lubrication of screw expanders Active GB2477777B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB1002411.5A GB2477777B (en) 2010-02-12 2010-02-12 Lubrication of screw expanders
KR1020127023865A KR20120140659A (en) 2010-02-12 2011-02-14 Lubrication of screw machines
CN201180018654.1A CN102834618B (en) 2010-02-12 2011-02-14 The lubrication of screw machine
US13/578,348 US20130052072A1 (en) 2010-02-12 2011-02-14 Lubrication of screw machines
PCT/GB2011/050275 WO2011098835A2 (en) 2010-02-12 2011-02-14 Lubrication of screw machines
JP2012552480A JP5964245B2 (en) 2010-02-12 2011-02-14 Screw machine lubrication
EP11709168A EP2534339A2 (en) 2010-02-12 2011-02-14 Lubrication of screw machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1002411.5A GB2477777B (en) 2010-02-12 2010-02-12 Lubrication of screw expanders

Publications (3)

Publication Number Publication Date
GB201002411D0 true GB201002411D0 (en) 2010-03-31
GB2477777A GB2477777A (en) 2011-08-17
GB2477777B GB2477777B (en) 2012-05-23

Family

ID=42110636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1002411.5A Active GB2477777B (en) 2010-02-12 2010-02-12 Lubrication of screw expanders

Country Status (7)

Country Link
US (1) US20130052072A1 (en)
EP (1) EP2534339A2 (en)
JP (1) JP5964245B2 (en)
KR (1) KR20120140659A (en)
CN (1) CN102834618B (en)
GB (1) GB2477777B (en)
WO (1) WO2011098835A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109356659A (en) * 2018-12-25 2019-02-19 中国石油大学(华东) A kind of conical screw rotor of twin-screw expander

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2501302B (en) * 2012-04-19 2016-08-31 The City Univ Reduced noise screw machines
DE102013200413A1 (en) * 2013-01-14 2014-07-31 Magna Powertrain Ag & Co. Kg Expander cycle
DE202013001817U1 (en) * 2013-02-26 2014-06-04 Vemag Maschinenbau Gmbh Arrangement of tight closing screw conveyors
JP5860435B2 (en) * 2013-05-31 2016-02-16 株式会社神戸製鋼所 Power generator
WO2015094465A1 (en) * 2013-12-18 2015-06-25 Carrier Corporation Method of improving compressor bearing reliability
DE102014010149B3 (en) * 2014-07-03 2015-08-13 Knut Denecke Method for compressing a steam and vapor compressor
JP6595395B2 (en) * 2016-04-14 2019-10-23 株式会社神戸製鋼所 Thermal energy recovery device and operation method thereof
EP3449129B1 (en) * 2016-04-29 2024-01-24 Circor Pumps North America, Llc. Modular thrust-compensating rotor assembly
KR101996400B1 (en) * 2016-06-23 2019-07-04 한국조선해양 주식회사 liquefaction system of boil-off gas and ship having the same
DE102017121954A1 (en) * 2017-09-21 2019-03-21 GasNet s.r.o. Screw expanders and methods for generating mechanical energy by expanding a working fluid
CN108087037B (en) * 2018-01-22 2023-05-05 中国石油大学(华东) Closed double-screw expander power generation device
US10987609B1 (en) * 2018-02-11 2021-04-27 John D. Walker Polar-linear-fresnel-concentrating solar-thermal power and desalination plant
GB2578923B (en) * 2018-11-14 2021-05-26 Edwards Ltd A rotor for a twin shaft pump and a twin shaft pump
CN110056506B (en) * 2019-04-25 2024-03-22 余德林 Dry-type oilless screw molded line and air compressor adopting same
WO2020236852A1 (en) 2019-05-20 2020-11-26 Carrier Corporation Direct drive refrigerant screw compressor with refrigerant lubricated bearings
US11898561B2 (en) 2019-05-20 2024-02-13 Carrier Corporation Direct drive refrigerant screw compressor with refrigerant lubricated rotors

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1197432A (en) 1966-07-29 1970-07-01 Svenska Rotor Maskiner Ab Improvements in and relating to Rotary Positive Displacement Machines of the Intermeshing Screw Type and Rotors therefor
GB1503488A (en) 1974-03-06 1978-03-08 Svenska Rotor Maskiner Ab Meshing screw rotor fluid maching
US4142765A (en) * 1977-02-10 1979-03-06 Sullair Corporation Rotor bearing assembly for rotary gas machine
US4228657A (en) * 1978-08-04 1980-10-21 Hughes Aircraft Company Regenerative screw expander
DE2918369A1 (en) * 1979-05-07 1980-11-13 Geothermal Energy Research And Expansion engine for wet steam from geothermal source - has epitrochoidal rotor with epitrochoidal idler for efficient expansion
GB2092676B (en) 1981-02-06 1984-09-19 Svenska Rotor Maskiner Ab Rotary positive-displacement fluidmachines
US4412796A (en) 1981-08-25 1983-11-01 Ingersoll-Rand Company Helical screw rotor profiles
SE429783B (en) 1981-12-22 1983-09-26 Sullair Tech Ab ROTORS FOR A SCREW ROTATOR
DE3220516A1 (en) * 1982-06-01 1983-12-01 Karl Prof.Dr.-Ing. 3000 Hannover Bammert DRYING SCREW MACHINE
GB8413619D0 (en) 1984-05-29 1984-07-04 Compair Ind Ltd Screw rotor machines
JPH04246201A (en) * 1990-09-28 1992-09-02 Bernard Zimmern Capacity type rotating machine
US5207568A (en) * 1991-05-15 1993-05-04 Vilter Manufacturing Corporation Rotary screw compressor and method for providing thrust bearing force compensation
US6217304B1 (en) * 1995-10-30 2001-04-17 David N. Shaw Multi-rotor helical-screw compressor
GB9610289D0 (en) * 1996-05-16 1996-07-24 Univ City Plural screw positive displacement machines
JPH10141262A (en) * 1996-11-05 1998-05-26 Hokuetsu Kogyo Co Ltd Water lubricating-type screw compressor
SE510066C2 (en) * 1997-08-25 1999-04-12 Svenska Rotor Maskiner Ab Oil-free screw rotor machine, the bearings of which are lubricated with an aqueous liquid
IT1309299B1 (en) * 1999-06-23 2002-01-22 Samputensili Spa SCREW ROTARY COMPRESSOR FOR REFRIGERANT GAS TO BE USED IN A SMALL POWER CONDITIONING OR REFRIGERATION SYSTEM.
US6506037B1 (en) * 1999-11-17 2003-01-14 Carrier Corporation Screw machine
BE1013944A3 (en) * 2001-03-06 2003-01-14 Atlas Copco Airpower Nv Water injected screw compressor.
BE1014043A3 (en) * 2001-03-07 2003-03-04 Atlas Copco Airpower Nv Water injected screw compressor element.
JP2002310079A (en) * 2001-04-16 2002-10-23 Hitachi Ltd Water lubricated screw compressor
JP2003097212A (en) * 2001-09-21 2003-04-03 Honda Motor Co Ltd Rotary fluid machine
JP3796210B2 (en) * 2002-11-01 2006-07-12 株式会社神戸製鋼所 Screw compressor
JP4069839B2 (en) * 2003-09-11 2008-04-02 日立アプライアンス株式会社 Sliding device, manufacturing method thereof, and refrigerant compressor
WO2005073433A1 (en) * 2004-01-29 2005-08-11 Unaxis Balzers Ag Method for removing a coating and single-chamber device for carrying out said method
JP4442461B2 (en) * 2005-02-23 2010-03-31 株式会社Ｉｈｉ Liquid lubricated foil type hydrodynamic bearing
AU2006256540B2 (en) 2005-06-10 2012-04-26 City University Expander lubrication in vapour power systems
GB0511864D0 (en) * 2005-06-10 2005-07-20 Univ City Expander lubrication in vapour power systems
JP5063916B2 (en) * 2006-04-06 2012-10-31 Ｎｔｎ株式会社 Sliding bearing for fuel gas compressor of fuel cell
JP4833882B2 (en) * 2007-02-08 2011-12-07 株式会社神戸製鋼所 Screw fluid machine
JP5348924B2 (en) * 2008-04-09 2013-11-20 株式会社神戸製鋼所 Screw fluid machine
BE1018158A5 (en) * 2008-05-26 2010-06-01 Atlas Copco Airpower Nv LIQUID INJECTED SCREW COMPRESSOR ELEMENT.
WO2010013316A1 (en) * 2008-07-29 2010-02-04 株式会社 日立製作所 Hybrid power generation system and its operating method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109356659A (en) * 2018-12-25 2019-02-19 中国石油大学(华东) A kind of conical screw rotor of twin-screw expander
CN109356659B (en) * 2018-12-25 2024-01-02 中国石油大学(华东) Conical screw rotor of double-screw expander

Also Published As

Publication number Publication date
GB2477777B (en) 2012-05-23
EP2534339A2 (en) 2012-12-19
WO2011098835A2 (en) 2011-08-18
US20130052072A1 (en) 2013-02-28
JP2013519820A (en) 2013-05-30
JP5964245B2 (en) 2016-08-03
CN102834618A (en) 2012-12-19
GB2477777A (en) 2011-08-17
KR20120140659A (en) 2012-12-31
CN102834618B (en) 2016-08-10
WO2011098835A3 (en) 2012-09-27

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