EP0222383A2 - Procédé d'enregistrement des à-coups de pompage à des turbocompresseurs - Google Patents

Procédé d'enregistrement des à-coups de pompage à des turbocompresseurs Download PDF

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Publication number
EP0222383A2
EP0222383A2 EP86115703A EP86115703A EP0222383A2 EP 0222383 A2 EP0222383 A2 EP 0222383A2 EP 86115703 A EP86115703 A EP 86115703A EP 86115703 A EP86115703 A EP 86115703A EP 0222383 A2 EP0222383 A2 EP 0222383A2
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EP
European Patent Office
Prior art keywords
signal
change
temperature
rate
operating variable
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
EP86115703A
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German (de)
English (en)
Other versions
EP0222383B1 (fr
EP0222383A3 (en
Inventor
Wilfried Dipl.-Ing. Blotenberg
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.)
Everllence SE
Original Assignee
MAN Gutehoffnungshutte GmbH
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Publication date
Application filed by MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0222383A2 publication Critical patent/EP0222383A2/fr
Publication of EP0222383A3 publication Critical patent/EP0222383A3/de
Application granted granted Critical
Publication of EP0222383B1 publication Critical patent/EP0222383B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring

Definitions

  • the invention relates to a method for detecting pump surges on turbo compressors of the type specified in the preamble of claim 1.
  • a method for detecting pump surges on turbo compressors of the type specified in the preamble of claim 1.
  • the monitored operating variable being the inlet temperature, is known from GB-PS 1 588 945.
  • Pumping is a process in a turbocompressor in which the pumped medium flows back intermittently or periodically from the pressure side to the suction side. This process occurs in operating states with too high a pressure ratio between outlet and inlet pressure or with a too low throughput volume. Since that Pumped medium heated by the compression in the compressor, the pumping medium flowing back in the event of a pump surge is hotter than the pumped pumped medium, so that a pump surge results in a change in the temperature conditions at the compressor inlet; at the same time, the flow, the pressure ratio, the final pressure and the output show a sudden drop.
  • the temperature or other change can be used as an indicator of the presence of a pump surge in order to trigger measures for eliminating the pumping, for example opening a relief valve.
  • the pump cycle of a compressor is relatively short at 0.5 to 2 seconds. With conventional temperature sensors, it is difficult to detect these brief temperature changes. In addition, the daily and seasonal fluctuations in the temperature of the intake air in air compressors or the process-related intake temperature fluctuations in gas compressors interfere. Cooling water temperature and quantity have an influence on intercooled compressors. All of these disturbances can lead to pump impulses not being detected quickly enough or not reliably enough when the operating conditions change, and therefore the countermeasures are not triggered or are triggered too late.
  • GB-PS 1 588 945 it is therefore proposed not to detect the temperature change itself, but rather its rate of change and to generate a trigger signal if it exceeds a predetermined value.
  • another compressor operating size e.g. the paddlewheel position are monitored in order to generate the trigger signal only if a trigger condition is fulfilled for both measured variables. For this it is necessary to make structural changes to the compressor and / or housing in order to position additional sensors in the compressor and to lead the measuring lines to the outside.
  • the object of the invention is to provide a reliable and free of interference method for detecting pump surges, for the application of which no additional structural changes need to be made to the compressor and / or housing.
  • a temperature sensor 3 is arranged in the intake duct 1 of a turbo compressor immediately before the first impeller 2 and another temperature sensor 4 at a somewhat greater distance from the first impeller 2.
  • the backflow through the impellers acts hotter pumped medium mainly on the temperature sensor 3, while the temperature sensor 4, which is further away from the impeller 2, is essentially only exposed to the intake flow and does not experience any change in temperature.
  • the temperature sensor 3 can respond quickly and the temperature sensor 4 can be thermally inert.
  • the temperature difference ⁇ T is formed in a difference-forming element 5 from the temperatures detected by the temperature sensors 3 and 4.
  • the differential element 5 is unnecessary if the temperature sensors 3, 4 are thermocouples which are connected to one another, so that the measurement signal corresponds to the temperature difference.
  • This temperature difference is differentiated in a differentiation stage 7 in order to form the time derivative d ⁇ T / dt.
  • a comparator 8 the values of the temperature difference and their time derivative are compared with predetermined limit values ⁇ T max and d max , and a signal indicating a surge is generated in the output line 9 when the two limit values are exceeded.
  • the measured variable x is delayed one input (+) of a subtraction stage 10b, the other Ren input (-) supplied via a delay element 10a.
  • a delay element of the first order is provided as the delay element 10a, in which, in the event of a sudden change in the input signal, the output signal increases in the form of an exponential function with a time delay to the input value.
  • the time constant T 1 of this increase is adjustable and essentially determines the behavior of the arrangement 10.
  • the signal generated by the subtraction stage 10b is dependent both on the rate of change and on the absolute amount of the change in the input signal x. Rapid signal changes compared to the time constant T 1 or the running time T L have a relatively strong effect on the output signal, slow changes only little. In the steady state, ie with a constant input signal, the output signal is zero. In addition, the output signal is also dependent on the magnitude of the input signal x, since, in the event of rapid changes, it can at most assume the value of the input signal x. Because of this, noise signals have an effect low amplitude also only slightly on the output signal, in contrast to a pure differentiation, in which only the increase in the signal edges is taken into account.
  • a limit value stage 10c is provided after the subtraction stage 10b in order to determine whether the output signal exceeds a predetermined value and, if appropriate, to generate a trigger signal. Small changes have no influence on the output of the limit value stage as long as the amount of the changes lies below the switching threshold of the limit value stage. This makes the change 10 insensitive to measurement noise.
  • the adaptation of the arrangement 10 for detecting pump surges is done by setting the time constant T 1 and the limit value of the limit value step.
  • the method can also be carried out when other measured variables are recorded, for example throughput, compressor end pressure, compressor suction pressure, output, speed, etc., which show a rapid change in the event of a pump surge.
  • other measured variables for example throughput, compressor end pressure, compressor suction pressure, output, speed, etc.
  • the rise in temperature the drop in outlet pressure, throughput, power and the axial position of the compressor shaft, which is also characteristic of a surge, can be detected and the signal processing are supplied, the consideration according to the invention of both the amount of change and the rate of change also being used in these cases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
EP86115703A 1985-11-12 1986-11-12 Procédé d'enregistrement des à-coups de pompage à des turbocompresseurs Expired - Lifetime EP0222383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3540088 1985-11-12
DE19853540088 DE3540088A1 (de) 1985-11-12 1985-11-12 Verfahren zur erfassung von pumpstoessen an turbokompressoren

Publications (3)

Publication Number Publication Date
EP0222383A2 true EP0222383A2 (fr) 1987-05-20
EP0222383A3 EP0222383A3 (en) 1988-01-13
EP0222383B1 EP0222383B1 (fr) 1990-10-24

Family

ID=6285761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115703A Expired - Lifetime EP0222383B1 (fr) 1985-11-12 1986-11-12 Procédé d'enregistrement des à-coups de pompage à des turbocompresseurs

Country Status (4)

Country Link
US (1) US4749331A (fr)
EP (1) EP0222383B1 (fr)
JP (1) JPS62113889A (fr)
DE (2) DE3540088A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3810717A1 (de) * 1988-03-30 1989-10-19 Gutehoffnungshuette Man Verfahren zur vermeidung des pumpens eines turboverdichters mittels abblaseregelung
US4879895A (en) * 1988-08-29 1989-11-14 Mcdonnell Douglas Corporation Normal shock locator
US4949276A (en) * 1988-10-26 1990-08-14 Compressor Controls Corp. Method and apparatus for preventing surge in a dynamic compressor
US5095714A (en) * 1989-12-25 1992-03-17 Daikin Industries, Ltd. Surging prediction device for a centrifugal compressor
US5195875A (en) * 1991-12-05 1993-03-23 Dresser-Rand Company Antisurge control system for compressors
US5306116A (en) * 1992-04-10 1994-04-26 Ingersoll-Rand Company Surge control and recovery for a centrifugal compressor
CA2149576A1 (fr) 1994-05-19 1995-11-20 Hideomi Harada Dispositif de detection de surtension et turbomachines connexes
CN100417818C (zh) * 2004-12-06 2008-09-10 三菱重工业株式会社 涡轮冷冻机
US7293954B2 (en) * 2004-12-30 2007-11-13 Mitsubishi Heavy Industries, Ltd. Centrifugal compressor for turbo chiller, turbo chiller, and control method therefor
JP4775097B2 (ja) * 2006-04-25 2011-09-21 トヨタ自動車株式会社 遠心式圧縮機を備える内燃機関の制御装置
US20080034753A1 (en) * 2006-08-15 2008-02-14 Anthony Holmes Furman Turbocharger Systems and Methods for Operating the Same
US7841825B2 (en) * 2006-10-26 2010-11-30 Industrial Technology Research Institute Method for predicting surge in compressor
DE102009047195B4 (de) 2009-11-26 2016-06-16 Man Diesel & Turbo Se Pumpstoßerfassungsvorrichtung, damit ausgerüsteter Turbokompressor und Verfahren zum Erfassen von Pumpstößen in einem solchen Turbokompressor
US9169809B2 (en) 2012-08-20 2015-10-27 Ford Global Technologies, Llc Method for controlling a variable charge air cooler
JP6038092B2 (ja) 2014-10-14 2016-12-07 三菱重工業株式会社 サージ判定装置、サージ判定方法およびプログラム
JP6431244B2 (ja) * 2016-03-08 2018-11-28 三菱重工エンジン＆ターボチャージャ株式会社 排気タービン過給機のサージ回避制御方法、サージ回避制御装置
CN113482959B (zh) * 2021-06-16 2022-06-03 清华大学 一种可识别工况和预警的离心压气机及工况识别方法
GB2622053A (en) * 2022-08-31 2024-03-06 Caterpillar Energy Solutions Gmbh Pump limit distance detection for a turbocharger

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696345A (en) * 1949-10-14 1954-12-07 United Aircraft Corp Method of controlling supercharger to avoid pulsation
NL289451A (fr) * 1962-02-28 1900-01-01
US3441200A (en) * 1967-03-13 1969-04-29 Carrier Corp Gas compression system having inlet gas control
US4137710A (en) * 1977-01-26 1979-02-06 United Technologies Corporation Surge detector for gas turbine engines
DE2735246C2 (de) * 1977-08-04 1985-07-18 Siemens AG, 1000 Berlin und 8000 München Regeleinrichtung für einen Turboverdichter
JPS5812445B2 (ja) * 1978-05-31 1983-03-08 株式会社東芝 蒸気タ−ビンの制御装置
DE2828124C2 (de) * 1978-06-27 1981-11-19 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Verfahren zur Verhinderung des Pumpens von Turboverdichtern
FR2488696A1 (fr) * 1980-08-13 1982-02-19 Snecma Procede et dispositif de detection du decollement tournant apparaissant dans une turbomachine a deux corps tournants
JPS5870078A (ja) * 1981-10-21 1983-04-26 Hitachi Ltd スクリユ圧縮機の監視装置
GB2112928B (en) * 1981-12-30 1985-07-24 Rolls Royce Sensing surges in gas turbines
US4464720A (en) * 1982-02-12 1984-08-07 The Babcock & Wilcox Company Centrifugal compressor surge control system
EP0162652B1 (fr) * 1984-05-14 1991-05-15 Dresser Industries,Inc. Système, appareil et méthode de détection et de réglage du pompage dans un turbocompresseur
US4594050A (en) * 1984-05-14 1986-06-10 Dresser Industries, Inc. Apparatus and method for detecting surge in a turbo compressor
DE3567700D1 (en) * 1984-10-26 1989-02-23 Nippon Denso Co A control system for an engine having air passage

Also Published As

Publication number Publication date
EP0222383B1 (fr) 1990-10-24
EP0222383A3 (en) 1988-01-13
US4749331A (en) 1988-06-07
DE3540088A1 (de) 1987-05-14
JPS62113889A (ja) 1987-05-25
DE3675154D1 (de) 1990-11-29

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