EP1387961B1 - Compresseur a vis a plusieurs etages - Google Patents

Compresseur a vis a plusieurs etages Download PDF

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Publication number
EP1387961B1
EP1387961B1 EP01969980A EP01969980A EP1387961B1 EP 1387961 B1 EP1387961 B1 EP 1387961B1 EP 01969980 A EP01969980 A EP 01969980A EP 01969980 A EP01969980 A EP 01969980A EP 1387961 B1 EP1387961 B1 EP 1387961B1
Authority
EP
European Patent Office
Prior art keywords
compressor
stage
drive means
screw compressor
monitoring
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.)
Expired - Lifetime
Application number
EP01969980A
Other languages
German (de)
English (en)
Other versions
EP1387961A1 (fr
Inventor
Philip Nichol
Lyndon Paul Foutain
Terrence Edward Coker
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.)
Compair UK Ltd
Original Assignee
Compair UK 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 Compair UK Ltd filed Critical Compair UK Ltd
Publication of EP1387961A1 publication Critical patent/EP1387961A1/fr
Application granted granted Critical
Publication of EP1387961B1 publication Critical patent/EP1387961B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle

Definitions

  • the invention relates to improvements in the drive of a multi-stage screw compressor using independent electric motors with electronic speed control.
  • a single fixed speed driver is currently used to drive the individual stages of the compressor simultaneously through a gearbox. Normally this requires a speed-increasing gear train, as the speed of the driver is considerably less than the drive required by the compressor stages.
  • the speed of each stage has to be matched for best efficiency and to share the work done by each stage.
  • As the gear ratio has to be changed to effect a change in output volume, to enable a range of different output volumes to be provided from a common set of stages, a unique gear-set is needed for each nominal output. When a range of different final delivery pressures is required, this also necessitates, in many cases, a unique gear ratio for each operating pressure.
  • a set of compressor stages may be used, running at different speeds, to give a range of output air flows.
  • the speed of all the stages must be increased. Due to the difference in performance characteristics of each stage, the increase in speed of each stage will not be the same.
  • the relative speed of the stages may need to be altered depending on the desired final stage delivery pressure or overall pressure ratio.
  • the basic parameter that determines the relative speed of the stages is the work done in each stage. To obtain the best efficiency, the work has to be balanced equally in each stage.
  • inlet throttling can only be used over a very narrow range of speeds as it effectively increases the pressure ratio across the machine. This again leads to overheating. For this reason multi-stage compressors are usually controlled by total closure of the inlet by a control valve. This provides very coarse pressure or flow control with poor efficiency. Varying the speed of the drive motor has been used to control some machines to improve efficiency at part load. With a fixed ratio of speeds between the stages this leads to an imbalance of work between the stages which may limit the control range.
  • FIG. 1 A typical prior art two-stage compressor 5 is shown in Fig. 1. Although a two-stage, oil-free machine is shown for clarity, the principles are the same where more stages are involved or where the stages have oil or water injection.
  • Each of the two compressor stages 10, 11 consists of a pair of contra-rotating, helically cut fluted rotors supported at each end in rolling bearings in a rigid casing. Each casing is attached to a single gearbox 12.
  • the drive motor 13 is coupled to the input gear in the gearbox 12, which transfers drive to the stages 10, 11 via a pinion on the shafts 12a, 12b of each stage 10, 11.
  • Air is drawn through an air filter 14 and inlet control valve 15 into the inlet port of the first stage 10 where it is partially compressed.
  • the partially compressed air from the first stage 10 passes to an intercooler 16, where its temperature is reduced before the air is passed to the inlet of the second stage 11 for further compression.
  • On leaving the second (or final) stage 11 the fully compressed air passes via a check valve 17 to an aftercooler 18 for further cooling, after which it is delivered to the user via air delivery outlet 19.
  • intercooler 16 and aftercooler 18 are each cooled by ambient air being drawn over them by a motor driven fan 20.
  • An alternative is to use water-cooled heat exchangers.
  • Fig. 2 shows a compressor 30 according to the present invention.
  • the essential operation is as described above, but differs from the prior art compressor 5 in that independent, variable speed motors 31, 32 drive each stage 10, 11 of the compressor 30 independently, with no mechanical link between the individual motor driven stages 10, 11.
  • the characteristics of the motors 31, 32 are matched to the corresponding compressor stages 10, 11.
  • the speed of the motors 31, 32 is controlled by an electronic controller 33.
  • the basic control parameter is the required final air delivery pressure or delivery air flow rate.
  • the speed at which each of the stages 10, 11 is driven is increased to give a greater air flow or is reduced to give a lesser air flow.
  • the maximum rotary speeds are limited to pre-determined levels based on mechanical considerations. The minimum speeds are either pre-determined or are determined by measuring the delivery temperatures of each stage 10, 11. As the speed of the rotors in any stage slows down, the stage becomes less efficient causing the temperature to rise. When this reaches a pre-set maximum value, the compressor 30 is stopped or unloaded via an inlet valve 15.
  • the speeds of the individual compressor stages 10, 11 are varied to compensate for a variety of factors. These factors include altitude, barometric pressure, ambient temperature and coolant temperature, blocking of filters and wear. Manufacturing variations in the compressor stages 10, 11 are also compensated for.
  • This control is achieved by continuously measuring air delivery pressures and temperatures from each stage 10, 11, as well as the input torque and speed to each stage 10, 11. Appropriate measuring devices are used to measure these parameters and transmit signals to the electronic controller 33.
  • the motors 31, 32 may have feedback loops directly to the controller 33.
  • the controller 33 processes the signals and sets the speed of the stages 10, 11 to achieve the desired delivery air flow and pressure. Then, using the measurements previously described, the controller 33 makes small adjustments to the stage speeds to minimise power consumption, balance the work evenly between the various stages and maintain safe operating temperatures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)

Claims (5)

  1. Compresseur à vis à plusieurs étages (30), comprenant :
    deux étages de compression, ou plus, (10, 11), dans lesquels chaque étage de compression comprend une paire de rotors pour comprimer un gaz ;
    deux moyens d'entraînement à vitesse variable, ou plus, (31, 32), dans lesquels chaque moyen d'entraînement à vitesse variable (31, 32) peut fonctionner pour entraîner un étage de compression respectif (10, 11) ; et
    une unité de commande (33) comprenant un moyen de traitement pouvant fonctionner pour traiter des signaux indicatifs de paramètres de fonctionnement du compresseur à vis (30) et commander les vitesses des moyens d'entraînement à vitesse variable (31, 32),
    caractérisé en ce que :
    le compresseur à vis comprend des dispositifs de contrôle pouvant fonctionner pour contrôler le couple et la vitesse de chacun des moyens d'entraînement à vitesse variable (31, 32),
    l'unité de commande (33) peut fonctionner pour commander les vitesses des moyens d'entraînement à vitesse variable (31, 32) de sorte que le compresseur à vis (30) fournisse un gaz à un débit et une pression d'acheminement nécessaires, et en ce que
    l'unité de commande (33) peut fonctionner pour traiter des signaux indicatifs du couple et de la vitesse de chacun des moyens d'entraînement à vitesse variable (31, 32) et pour commander les vitesses des moyens d'entraînement à vitesse variable (31, 32) de sorte que la consommation de puissance du compresseur à vis (3) soit sensiblement minimisée.
  2. Compresseur à vis (30) selon la revendication 1 comprenant en outre des dispositifs de contrôle destinés à contrôler les températures d'acheminement du gaz au niveau de chaque étage de compression (10, 11).
  3. Compresseur à vis (30) selon l'une quelconque des revendications précédentes, comprenant en outre au moins un dispositif de contrôle destiné à contrôler la température ambiante.
  4. Compresseur à vis (30) selon l'une quelconque des revendications précédentes, comprenant en outre un moyen de refroidissement (16) disposé entre des étages de compression adjacents (10, 11) et au moins un dispositif de contrôle pour contrôler la température du gaz après son passage à travers le moyen de refroidissement (16).
  5. Compresseur à vis (30) selon l'une quelconque des revendications précédentes, comprenant en outre au moins un dispositif de contrôle destiné à contrôler la pression d'acheminement du gaz à, chaque étage de compression (10, 11).
EP01969980A 2000-09-25 2001-09-25 Compresseur a vis a plusieurs etages Expired - Lifetime EP1387961B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0023456A GB2367332B (en) 2000-09-25 2000-09-25 Improvements in multi-stage screw compressor drive arrangements
GB0023456 2000-09-25
PCT/GB2001/004278 WO2002025115A1 (fr) 2000-09-25 2001-09-25 Compresseur a vis a plusieurs etages

Publications (2)

Publication Number Publication Date
EP1387961A1 EP1387961A1 (fr) 2004-02-11
EP1387961B1 true EP1387961B1 (fr) 2006-03-08

Family

ID=9900069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01969980A Expired - Lifetime EP1387961B1 (fr) 2000-09-25 2001-09-25 Compresseur a vis a plusieurs etages

Country Status (8)

Country Link
US (1) US20040101411A1 (fr)
EP (1) EP1387961B1 (fr)
AT (1) ATE319932T1 (fr)
AU (1) AU2001290100A1 (fr)
DE (1) DE60117821T2 (fr)
ES (1) ES2260285T3 (fr)
GB (1) GB2367332B (fr)
WO (1) WO2002025115A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060045749A1 (en) 2004-08-30 2006-03-02 Powermate Corporation Air compressor utilizing an electronic control system
US7481627B2 (en) 2004-08-30 2009-01-27 Mat Industries Llc Air compressor tools that communicate with an air compressor
JP5071967B2 (ja) * 2007-03-30 2012-11-14 アネスト岩田株式会社 ロータリコンプレッサ及びその運転制御方法
GB2452287B (en) * 2007-08-29 2012-03-07 Gardner Denver Gmbh Improvements in compressors control
BE1018096A3 (nl) * 2008-04-14 2010-05-04 Atlas Copco Airpower Nv Werkwijze voor het regelen van een meertrapscompressor.
DE102008021102A1 (de) * 2008-04-28 2009-10-29 Siemens Aktiengesellschaft Wirkungsgradüberwachung eines Verdichters
US10941770B2 (en) 2010-07-20 2021-03-09 Trane International Inc. Variable capacity screw compressor and method
TWI397634B (zh) * 2010-12-06 2013-06-01 China Steel Corp 多級壓縮機之線上監控方法
US10443603B2 (en) 2012-10-03 2019-10-15 Praxair Technology, Inc. Method for compressing an incoming feed air stream in a cryogenic air separation plant
US10385861B2 (en) 2012-10-03 2019-08-20 Praxair Technology, Inc. Method for compressing an incoming feed air stream in a cryogenic air separation plant
US20160053764A1 (en) * 2012-10-03 2016-02-25 Ahmed F. Abdelwahab Method for controlling the compression of an incoming feed air stream to a cryogenic air separation plant
DE102014107126A1 (de) * 2014-05-20 2015-11-26 Harald Wenzel Mehrstufige Verdichteranlage zur Erzeugung eines komprimierten Gase
JP6545448B2 (ja) * 2014-11-05 2019-07-17 三菱重工サーマルシステムズ株式会社 二段圧縮式冷凍サイクル装置及びその制御装置並びに制御方法
JP6491982B2 (ja) * 2015-08-28 2019-03-27 株式会社神戸製鋼所 ２段型スクリュ圧縮機およびその運転方法
US10428816B2 (en) 2016-10-24 2019-10-01 Hamilton Sundstrand Corporation Variable speed multi-stage pump
DE102017107599A1 (de) 2017-04-10 2018-10-11 Gardner Denver Deutschland Gmbh Pulsations-Schalldämpfer für Kompressoren
DE102017107602B3 (de) 2017-04-10 2018-09-20 Gardner Denver Deutschland Gmbh Kompressoranlage mit interner Luft-Wasser-Kühlung
DE102017107601B4 (de) 2017-04-10 2019-11-07 Gardner Denver Deutschland Gmbh Verfahren zur Steuerung eines Schraubenverdichters
BE1026652B1 (nl) * 2018-09-25 2020-04-28 Atlas Copco Airpower Nv Oliegeïnjecteerde meertraps compressorinrichting en werkwijze om een dergelijke compressorinrichting aan te sturen
BE1026654B1 (nl) 2018-09-25 2020-04-27 Atlas Copco Airpower Nv Oliegeïnjecteerde meertraps compressorinrichting en werkwijze voor het aansturen van een compressorinrichting
DE102019102387A1 (de) 2019-01-30 2020-07-30 Gardner Denver Deutschland Gmbh Kühlungsanordnung und Verfahren zur Kühlung eines mindestens zweistufigen Drucklufterzeugers
DE102020103384A1 (de) 2020-02-11 2021-08-12 Gardner Denver Deutschland Gmbh Schraubenverdichter mit einseitig gelagerten Rotoren
CN115126695A (zh) * 2021-03-25 2022-09-30 开利公司 两级螺杆压缩机及空气调节系统

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2909675C3 (de) * 1979-03-12 1981-11-19 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Verfahren zur kondensatfreien Zwischenkühlung verdichteter Gase
DE3032002C2 (de) * 1980-08-25 1986-01-16 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Einrichtung zur Fördermengenregelung einer ein- oder mehrstufigen Verdichteranordnung, insbesondere für Schraubenverdichter
JPS5885062A (ja) * 1981-11-16 1983-05-21 株式会社デンソー 自動車用空調装置
US4787211A (en) * 1984-07-30 1988-11-29 Copeland Corporation Refrigeration system
EP0209499A3 (fr) * 1985-06-10 1987-08-12 Institut Cerac S.A. Installation de compresseurs
JPS62243982A (ja) * 1986-04-14 1987-10-24 Hitachi Ltd ２段型真空ポンプ装置およびその運転方法
US5224836A (en) * 1992-05-12 1993-07-06 Ingersoll-Rand Company Control system for prime driver of compressor and method
DE4318707A1 (de) * 1993-06-04 1994-12-08 Sihi Gmbh & Co Kg Verdrängermaschine mit elektronischer Motorsynchronisation
JP3352187B2 (ja) * 1993-12-03 2002-12-03 株式会社神戸製鋼所 ２段型オイルフリースクリュ圧縮機
DE69414077T2 (de) * 1993-12-14 1999-06-10 Carrier Corp Betrieb eines Economisers für Anlagen mit zweistufigem Verdichter
US5797729A (en) * 1996-02-16 1998-08-25 Aspen Systems, Inc. Controlling multiple variable speed compressors
JPH1082391A (ja) * 1996-07-19 1998-03-31 Ishikawajima Harima Heavy Ind Co Ltd ２段スクリュー圧縮機の制御装置
JP3654652B2 (ja) * 1996-08-19 2005-06-02 ダイキン工業株式会社 ブラシレスｄｃモータ駆動装置
JP3767052B2 (ja) * 1996-11-30 2006-04-19 アイシン精機株式会社 多段式真空ポンプ
JPH1137053A (ja) * 1997-07-23 1999-02-09 Ishikawajima Harima Heavy Ind Co Ltd インバータ駆動多段圧縮機の制御方法
BE1012944A3 (nl) * 1999-10-26 2001-06-05 Atlas Copco Airpower Nv Meertraps-compressoreenheid en werkwijze voor het regelen van een der gelijke meertraps-compressoreenheid.
DE10003869C5 (de) * 2000-01-28 2007-11-08 Aerzener Maschinenfabrik Gmbh Verfahren zum Komprimieren von fluiden Fördermedien

Also Published As

Publication number Publication date
EP1387961A1 (fr) 2004-02-11
DE60117821T2 (de) 2006-11-02
AU2001290100A1 (en) 2002-04-02
ATE319932T1 (de) 2006-03-15
GB0023456D0 (en) 2000-11-08
GB2367332A (en) 2002-04-03
US20040101411A1 (en) 2004-05-27
GB2367332B (en) 2003-12-03
DE60117821D1 (de) 2006-05-04
ES2260285T3 (es) 2006-11-01
WO2002025115A1 (fr) 2002-03-28

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