WO2012052777A3 - Improvements in or relating to screw expanders - Google Patents

Improvements in or relating to screw expanders Download PDF

Info

Publication number
WO2012052777A3
WO2012052777A3 PCT/GB2011/052047 GB2011052047W WO2012052777A3 WO 2012052777 A3 WO2012052777 A3 WO 2012052777A3 GB 2011052047 W GB2011052047 W GB 2011052047W WO 2012052777 A3 WO2012052777 A3 WO 2012052777A3
Authority
WO
WIPO (PCT)
Prior art keywords
working fluid
pressure
casing
screw expander
initial pressure
Prior art date
Application number
PCT/GB2011/052047
Other languages
French (fr)
Other versions
WO2012052777A2 (en
Inventor
Ian Kenneth Smith
Nikola Rudi Stosic
Original Assignee
The City University
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 The City University filed Critical The City University
Publication of WO2012052777A2 publication Critical patent/WO2012052777A2/en
Publication of WO2012052777A3 publication Critical patent/WO2012052777A3/en

Links

Classifications

    • 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
    • F01C1/086—Carter
    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • 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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps 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
    • F04C2/16—Rotary-piston machines or pumps 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/18—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F01C21/186—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet for variable fluid distribution
    • 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
    • F04C2210/10—Fluid working
    • F04C2210/1077—Steam

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

A method of reducing the pressure of a working fluid comprises expanding the working fluid in a screw expander from an initial pressure and bleeding a portion of the working fluid from the screw expander at an intermediate pressure lower than the initial pressure. The remaining working fluid is expanded in the same screw expander and discharged at a discharge pressure lower than the intermediate pressure. A screw expander for performing this method comprises: a casing having an inlet for admitting working fluid to the casing at a relatively high initial pressure; an outlet for discharging working fluid from the casing at a relatively low discharge pressure; and at least one bleed port located downstream of the inlet and upstream of the outlet for extracting working fluid from the casing at an intermediate pressure between the initial pressure and the discharge pressure.
PCT/GB2011/052047 2010-10-21 2011-10-21 Improvements in or relating to screw expanders WO2012052777A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1017791.3A GB2484718A (en) 2010-10-21 2010-10-21 A screw expander having a bleed port
GB1017791.3 2010-10-21

Publications (2)

Publication Number Publication Date
WO2012052777A2 WO2012052777A2 (en) 2012-04-26
WO2012052777A3 true WO2012052777A3 (en) 2013-07-18

Family

ID=43334172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/052047 WO2012052777A2 (en) 2010-10-21 2011-10-21 Improvements in or relating to screw expanders

Country Status (2)

Country Link
GB (1) GB2484718A (en)
WO (1) WO2012052777A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB126594A (en) * 1919-02-11 1919-05-15 Percival John Mcdermott Improvements in Rotary Engines.
EP1067342A2 (en) * 1999-07-09 2001-01-10 Carrier Corporation Expander-compressor as two-phase flow throttle valve replacement
WO2005078241A1 (en) * 2004-02-17 2005-08-25 Svenska Rotor Maskiner Ab Method and means for controlling a flow through an expander

Family Cites Families (7)

* 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
US3804564A (en) * 1973-02-28 1974-04-16 B Zimmern Globoid-worm machines for varying the pressure of a fluid
GB1503488A (en) 1974-03-06 1978-03-08 Svenska Rotor Maskiner Ab Meshing screw rotor fluid maching
GB2092676B (en) 1981-02-06 1984-09-19 Svenska Rotor Maskiner Ab Rotary positive-displacement fluidmachines
DE19614562A1 (en) * 1995-04-13 1996-10-17 Ingersoll Dresser Pump Co Screw pump
GB9610289D0 (en) 1996-05-16 1996-07-24 Univ City Plural screw positive displacement machines
US8801395B2 (en) * 2008-06-16 2014-08-12 Gardner Denver, Inc. Startup bypass system for a screw compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB126594A (en) * 1919-02-11 1919-05-15 Percival John Mcdermott Improvements in Rotary Engines.
EP1067342A2 (en) * 1999-07-09 2001-01-10 Carrier Corporation Expander-compressor as two-phase flow throttle valve replacement
WO2005078241A1 (en) * 2004-02-17 2005-08-25 Svenska Rotor Maskiner Ab Method and means for controlling a flow through an expander

Also Published As

Publication number Publication date
GB201017791D0 (en) 2010-12-01
WO2012052777A2 (en) 2012-04-26
GB2484718A (en) 2012-04-25

Similar Documents

Publication Publication Date Title
MX2017013615A (en) Compressor installation with drying device for compressed gas and method for drying compressed gas.
WO2009125135A3 (en) Casing for a moving-blade wheel of a turbomachine
WO2011015193A3 (en) Blade
MX2017001335A (en) System and method for utilizing integrated pressure exchange manifold in hydraulic fracturing.
EP2119892A3 (en) Method for controlling a set point for extracting air from a compressor to provide turbine cooling air in a gas turbine
GB2479330B8 (en) A device for liquid treatment when compressing a well flow
WO2012141912A3 (en) Compression method and air separation
WO2012027451A3 (en) Water treatment and revitalization system and method
WO2011056283A3 (en) Adiabatic compressed air energy storage system with multi-stage thermal energy storage
WO2009133308A3 (en) Device for bleeding air from a turbomachine compressor
WO2011050423A3 (en) Device for compressing and drying gas and a method applied thereby.
WO2013164564A9 (en) Control of system with gas based cycle
WO2015011497A3 (en) System, method and apparatus
MX2017016478A (en) System and method for startup of a power production plant.
GB201117540D0 (en) High pressure hydrogen gas compressor
EP2891787A3 (en) A bleed flow outlet
WO2014105293A3 (en) Air separation method and apparatus
WO2014047377A3 (en) Method and apparatus for decompressing a compressor
WO2012052777A3 (en) Improvements in or relating to screw expanders
MX338204B (en) Supersonic compressor rotor and method of compressing a fluid.
WO2010119121A3 (en) Roughing pump method for a positive displacement pump
WO2012030682A3 (en) Pressure vessel and method therefor
WO2012126453A3 (en) Operating method for a jet mill plant and jet mill plant
WO2012101208A3 (en) Gas system for compressing a process gas
WO2012037021A3 (en) Compressor having an oil management system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11788202

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 11788202

Country of ref document: EP

Kind code of ref document: A2