HK1116852A1 - A system and a method for capacity control in a screw compressor - Google Patents

A system and a method for capacity control in a screw compressor

Info

Publication number
HK1116852A1
HK1116852A1 HK08111070.2A HK08111070A HK1116852A1 HK 1116852 A1 HK1116852 A1 HK 1116852A1 HK 08111070 A HK08111070 A HK 08111070A HK 1116852 A1 HK1116852 A1 HK 1116852A1
Authority
HK
Hong Kong
Prior art keywords
screw compressor
bypass valve
capacity
functionally connected
motor
Prior art date
Application number
HK08111070.2A
Inventor
Rajepandhare Nagesh
Pandurangan Ramesh
Venu Madhav Kuppachi
Original Assignee
Elgi Equipments Ltd
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 Elgi Equipments Ltd filed Critical Elgi Equipments Ltd
Publication of HK1116852A1 publication Critical patent/HK1116852A1/en

Links

Classifications

    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids 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
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids 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
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A system and a method for implementing capacity control in a screw compressor, said system comprising; a screw compressor, said compressor driven by a multi-capacity (speed and power) motor to compress air or gas medium, a bypass inlet member with a bypass valve, extending from the high pressure zone to the low pressure zone of the screw compressor to recirculate the gaseous medium, a bypass valve controller functionally connected to said bypass valve, a motor controller functionally connected to the motor to effect multi-capacity (speed and power) operations, a main processing control unit disposed to control the bypass valve and multi-capacity (speed and power) operations, measuring means disposed on the compressed medium passage for measuring the changes in the pressure and/or temperature changes in the form of signals, a signal converter functionally connected to the main processing unit and the measuring means to receive the signals, and said motor controller and bypass valve controller are functionally connected to the main processing unit to perform the capacity control of the screw compressor.
HK08111070.2A 2005-02-02 2008-10-06 A system and a method for capacity control in a screw compressor HK1116852A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN85CH2005 2005-02-02
PCT/IN2006/000038 WO2006095364A1 (en) 2005-02-02 2006-02-01 A system and a method for capacity control in a screw compressor

Publications (1)

Publication Number Publication Date
HK1116852A1 true HK1116852A1 (en) 2009-01-02

Family

ID=36952991

Family Applications (1)

Application Number Title Priority Date Filing Date
HK08111070.2A HK1116852A1 (en) 2005-02-02 2008-10-06 A system and a method for capacity control in a screw compressor

Country Status (7)

Country Link
US (1) US20080286087A1 (en)
EP (1) EP1844236B1 (en)
CN (1) CN100562666C (en)
AT (1) ATE504743T1 (en)
DE (1) DE602006021137D1 (en)
HK (1) HK1116852A1 (en)
WO (1) WO2006095364A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2358975A4 (en) * 2008-11-12 2017-04-12 Exxonmobil Upstream Research Company Vessel compressor methods and systems
JP5318062B2 (en) 2010-10-04 2013-10-16 株式会社神戸製鋼所 Screw expander
TWI400415B (en) * 2010-12-17 2013-07-01 Ind Tech Res Inst Controlling method of changeable capacity and changeable discharge pressure of a variable speed screw compressor
US10851785B2 (en) * 2014-12-31 2020-12-01 Ingersoll-Rand Industrial U.S., Inc. Compressor system with variable blowdown control
BR112017014897B1 (en) * 2015-01-15 2022-10-11 Atlas Copco Airpower, Naamloze Vennootschap OIL INJECTED VACUUM PUMP ELEMENT
BE1022764B1 (en) * 2015-01-15 2016-08-30 Atlas Copco Airpower Naamloze Vennootschap Oil-injected vacuum pump element
WO2016112439A1 (en) * 2015-01-15 2016-07-21 Atlas Copco Airpower, Naamloze Vennootschap Oil-injected vacuum pump element
US10808699B2 (en) 2017-09-28 2020-10-20 Ingersoll-Rand Industrial U.S., Inc. Suction side slide valve for a screw compressor
CN108468643A (en) * 2018-05-18 2018-08-31 麦克维尔空调制冷(武汉)有限公司 It can determine the screw compressor capacity control system and method for the operation of frequency speed-changing

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2641482A1 (en) * 1976-09-15 1978-03-16 Aerzener Maschf Gmbh SCREW COMPRESSOR
JPS5718483A (en) * 1980-07-08 1982-01-30 Mayekawa Mfg Co Ltd Speed control unit of screw type compressor
SE457822B (en) * 1986-11-28 1989-01-30 Svenska Rotor Maskiner Ab PROCEDURES FOR AUTHORIZATION OF SELECTIVELY CONTROLLED PRESSURE PULSES IN A GAS MASS AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE
SE461346B (en) * 1988-06-17 1990-02-05 Svenska Rotor Maskiner Ab ROTATE COMPRESSOR COMPRESSOR AND A REFRIGERATOR, A COMPRESSOR OF THE ABOVE TYPE NOT INCLUDED
US5183395A (en) * 1992-03-13 1993-02-02 Vilter Manufacturing Corporation Compressor slide valve control
DE4221494C2 (en) * 1992-06-29 2003-03-13 Grasso Gmbh Refrigeration Tech Flow change on a screw compressor
JP3325196B2 (en) * 1997-03-31 2002-09-17 日本コムテック株式会社 Screw compressor
JP3837278B2 (en) * 2000-08-10 2006-10-25 株式会社神戸製鋼所 Compressor operation method
US6659729B2 (en) * 2001-02-15 2003-12-09 Mayekawa Mfg. Co., Ltd. Screw compressor equipment for accommodating low compression ratio and pressure variation and the operation method thereof
US6527522B2 (en) 2001-07-03 2003-03-04 Yen Sun Technology Corp. Heat dissipation fan structure

Also Published As

Publication number Publication date
EP1844236A1 (en) 2007-10-17
ATE504743T1 (en) 2011-04-15
DE602006021137D1 (en) 2011-05-19
WO2006095364A1 (en) 2006-09-14
EP1844236B1 (en) 2011-04-06
US20080286087A1 (en) 2008-11-20
CN101163885A (en) 2008-04-16
CN100562666C (en) 2009-11-25

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20210201