EP0169336A1 - Regelungs- und Steuerungssystem, insbesondere für Wasserring-Vakuumpumpen - Google Patents

Regelungs- und Steuerungssystem, insbesondere für Wasserring-Vakuumpumpen Download PDF

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Publication number
EP0169336A1
EP0169336A1 EP85106437A EP85106437A EP0169336A1 EP 0169336 A1 EP0169336 A1 EP 0169336A1 EP 85106437 A EP85106437 A EP 85106437A EP 85106437 A EP85106437 A EP 85106437A EP 0169336 A1 EP0169336 A1 EP 0169336A1
Authority
EP
European Patent Office
Prior art keywords
control
regulation
line
control system
pump
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.)
Withdrawn
Application number
EP85106437A
Other languages
German (de)
English (en)
French (fr)
Inventor
Heinz Bohn
Werner Dr. Fink
Reinhold Lühmann
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of EP0169336A1 publication Critical patent/EP0169336A1/de
Withdrawn legal-status Critical Current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
    • 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
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/001—General arrangements, plants, flowsheets
    • 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
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/004—Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply

Definitions

  • the object of the present invention is now to achieve a comprehensive regulation for vacuum systems including the aforementioned speed adjustment, adapted to the specific conditions in water ring vacuum pumps.
  • the invention proposes, in a regulation and control system of the type mentioned, the sensors for regulating to minimize fresh water consumption, regulating to constant or time-variable suction pressure, preventing cavitation, regulating to the maximum engine power or to regulate the switching on and off of several pumps via a control unit, which has one or more inputs and outputs as well as temporal and logical links for a programmable logic controller, by means of which a change in speed and power for the drive motor or pumps or Pumping is done to connect to the actuators.
  • a temperature sensor should be arranged in the exhaust air line or in the separating tank of the pumps or pumps or in the process water line, which is connected via the control unit to a control valve in the fresh water line.
  • a bypass bypassing the control valve should be provided with a valve that can be set to a minimum fresh water quantity.
  • the water ring temperature should be varied within the limits adapted to the operation.
  • a pressure sensor that can be set to a constant suction pressure can be arranged in the suction line (vacuum line) of the pump or pumps and is connected to the electric motors of the pumps via the control unit.
  • a speed controller for a minimum speed of the electric motor ensuring the stability of the water ring should then be provided in the control device and the control device should have a mechanical speed frequency overload preventing the pump from overloading.
  • an air inlet with a control valve can also be provided, which to prevent cavitation, depending on the temperature in the exhaust air line or in the separating tank and the pressure in the intake line via the control unit according to a predetermined limit pressure curve to a regulated air addition in the suction line is adjustable.
  • a power sensor can also be connected to the power supply line for the drive motor of the vacuum pump, by means of which the drive motor is continuously adjusted to its nominal power via the control unit and the speed controller.
  • the systems shown, for example, in the figures essentially consist of the vacuum lines and the exhaust air lines, which are connected by the vacuum pumps 6 driven by electric motors 5. To complement the water ring in the pumps, they are still connected to a fresh water line, in which a shut-off valve 13 and a dirt filter 10 are installed.
  • control unit 12 which Has more inputs and outputs as well as temporal and logical links via a programmable logic controller, are interconnected.
  • a pressure sensor 3 is installed in the control circuit (consisting of the control unit 12, the electric motors 5 and the liquid vacuum pumps 6.
  • This control circuit ensures that a constant suction pressure is generated via the vacuum line, regardless of the gas accumulation is held. Any pressure / time diagrams can be drawn through a temporal intake pressure specification. Setting a minimum speed of the speed controller 11 ensures that the water ring remains stable. Setting a maximum frequency ensures that the mechanical load on the vacuum pump is not exceeded.
  • valve 1 is controlled as a function of the temperature in the exhaust air line 7 and the pressure in the vacuum line 3 via the control device 12, so that a predetermined limit curve P pressure is reached as a function of the temperature.
  • the switching on and off of pumps can also be controlled automatically, that is, a pump control program to e.g. B. Switch on pumps for power peaks or switch from one pump to another to operate several pumps evenly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
EP85106437A 1984-05-30 1985-05-24 Regelungs- und Steuerungssystem, insbesondere für Wasserring-Vakuumpumpen Withdrawn EP0169336A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843420144 DE3420144A1 (de) 1984-05-30 1984-05-30 Regelungs- und steuerungssystem, insbes. fuer wassering-vakuumpumpen
DE3420144 1984-05-30

Publications (1)

Publication Number Publication Date
EP0169336A1 true EP0169336A1 (de) 1986-01-29

Family

ID=6237202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85106437A Withdrawn EP0169336A1 (de) 1984-05-30 1985-05-24 Regelungs- und Steuerungssystem, insbesondere für Wasserring-Vakuumpumpen

Country Status (7)

Country Link
US (1) US4655688A (enrdf_load_stackoverflow)
EP (1) EP0169336A1 (enrdf_load_stackoverflow)
JP (1) JPS611886A (enrdf_load_stackoverflow)
CA (1) CA1244914A (enrdf_load_stackoverflow)
DE (1) DE3420144A1 (enrdf_load_stackoverflow)
DK (1) DK239085A (enrdf_load_stackoverflow)
NO (1) NO852106L (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706644A1 (fr) * 1993-06-11 1994-12-23 Normalab Dispositif de régulation de vide.
WO2019174239A1 (en) * 2018-03-14 2019-09-19 Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd Liquid ring pump control

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* Cited by examiner, † Cited by third party
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DE3425616A1 (de) * 1984-07-12 1986-01-23 Loewe Pumpenfabrik GmbH, 2120 Lüneburg Anordnung zur minimierung des kuehlfluessigkeitsverbrauches insbes. bei fluessigkeitsring-vakuumpumpen o.dgl.
US4699570A (en) * 1986-03-07 1987-10-13 Itt Industries, Inc Vacuum pump system
JPH02180011A (ja) * 1988-12-29 1990-07-12 J C C Eng Kk 電解コンデンサの真空含浸方法及び装置
US5008051A (en) * 1989-03-01 1991-04-16 Decoursey Robert T Vacuum sizing tank with electronically controlled vacuum pressure
FR2652390B1 (fr) * 1989-09-27 1991-11-29 Cit Alcatel Groupe de pompage a vide.
DE3937152A1 (de) * 1989-11-08 1991-05-16 Gutehoffnungshuette Man Verfahren zum optimierten betreiben zweier oder mehrerer kompressoren im parallel- oder reihenbetrieb
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DE19715480C2 (de) * 1997-04-14 1999-01-14 Saskia Solar Und Energietechni Vakuumpumpsystem mit einer Flüssigringpumpe
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JP2002168192A (ja) * 2000-12-01 2002-06-14 Seiko Instruments Inc 真空ポンプ
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US8463441B2 (en) 2002-12-09 2013-06-11 Hudson Technologies, Inc. Method and apparatus for optimizing refrigeration systems
DE602004021821D1 (de) * 2003-08-25 2009-08-13 Computer Process Controls Inc Kühlungssteuersystem
WO2005081084A2 (de) * 2004-02-18 2005-09-01 Siemens Aktiengesellschaft Verfahren zur auswahl eines möglichen teilnehmers für ein medizinisches vorhaben anhand eines auswahlkriteriums
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US20070109912A1 (en) * 2005-04-15 2007-05-17 Urquhart Karl J Liquid ring pumping and reclamation systems in a processing environment
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CN103597292B (zh) 2011-02-28 2016-05-18 艾默生电气公司 用于建筑物的供暖、通风和空调hvac系统的监视系统和监视方法
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GB2571971B (en) * 2018-03-14 2020-09-23 Edwards Tech Vacuum Engineering Qingdao Co Ltd Liquid ring pump control
KR20210079330A (ko) * 2018-10-25 2021-06-29 에드워즈 테크놀로지스 배큠 엔지니어링 (칭다오) 컴퍼니 리미티드 액체 링 펌프의 제어
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US12123412B2 (en) * 2020-08-28 2024-10-22 Edwards Technologies Vacuum Engineering (Qingdao) Company Limited Control of operating liquid flow into a liquid ring pump
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JP7705722B2 (ja) * 2021-03-19 2025-07-10 エドワーズ株式会社 真空ポンプ及び真空ポンプの制御装置
DE202023102437U1 (de) * 2023-05-05 2023-06-05 Aco Ahlmann Se & Co. Kg Vakuumpumpensystem, computerlesbares Medium, Computerprogrammprodukt und Steuervorrichtung

Citations (11)

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FR548693A (fr) * 1922-03-10 1923-01-20 Nash Engineering Co Perfectionnements dans les pompes à vide humide
US1681574A (en) * 1923-03-01 1928-08-21 Westinghouse Air Brake Co Rotary compressor
US1867813A (en) * 1930-02-01 1932-07-19 Lucian F Easton Dual purpose pumping apparatus
DE697264C (de) * 1937-09-18 1940-10-10 Siemens Schuckertwerke Akt Ges Pumpe mit umlaufendem Fluessigkeitsring zur Foerderung von Gasen
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DE968232C (de) * 1952-06-17 1958-01-30 Siemens Ag Fluessigkeitsring-Vakuumpumpe mit vorgeschaltetem Strahlsauger
FR2180332A5 (enrdf_load_stackoverflow) * 1972-04-08 1973-11-23 Sihi Gmbh & Co Kg
US3981618A (en) * 1975-02-14 1976-09-21 Grumman Aerospace Corporation Method and apparatus for preventing pump cavitation
GB2077951A (en) * 1980-06-16 1981-12-23 Borg Warner Capacity control systems for screw compressor based water chillers
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DE3213155A1 (de) * 1982-04-08 1983-10-13 VIA Gesellschaft für Verfahrenstechnik mbH, 4000 Düsseldorf Verfahren zur ueberwachung einer drucklufterzeugungsanlage und einrichtung zur ausfuehrung des verfahrens

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US3981618A (en) * 1975-02-14 1976-09-21 Grumman Aerospace Corporation Method and apparatus for preventing pump cavitation
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GB2077951A (en) * 1980-06-16 1981-12-23 Borg Warner Capacity control systems for screw compressor based water chillers
DE3213155A1 (de) * 1982-04-08 1983-10-13 VIA Gesellschaft für Verfahrenstechnik mbH, 4000 Düsseldorf Verfahren zur ueberwachung einer drucklufterzeugungsanlage und einrichtung zur ausfuehrung des verfahrens

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706644A1 (fr) * 1993-06-11 1994-12-23 Normalab Dispositif de régulation de vide.
EP0631217A1 (fr) * 1993-06-11 1994-12-28 NORMALAB (Société anonyme) Dispositif de régulation de vide
WO2019174239A1 (en) * 2018-03-14 2019-09-19 Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd Liquid ring pump control
CN112041563A (zh) * 2018-03-14 2020-12-04 埃地沃兹真空泵制造(青岛)有限公司 液环泵控制
US11828285B2 (en) 2018-03-14 2023-11-28 Edwards Technologies Vacuum Engineering (Qingdao) Company Limited Liquid ring pump control

Also Published As

Publication number Publication date
JPH0158357B2 (enrdf_load_stackoverflow) 1989-12-11
DE3420144A1 (de) 1985-12-05
JPS611886A (ja) 1986-01-07
CA1244914A (en) 1988-11-15
DK239085D0 (da) 1985-05-29
US4655688A (en) 1987-04-07
DK239085A (da) 1985-12-01
NO852106L (no) 1985-12-02

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