EP0554640A1 - Procédure et dispositif pour la détermination de l'érosion occasionnée par le cavitation d'éléments traversés par un écoulement de fluides - Google Patents

Procédure et dispositif pour la détermination de l'érosion occasionnée par le cavitation d'éléments traversés par un écoulement de fluides Download PDF

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Publication number
EP0554640A1
EP0554640A1 EP92810090A EP92810090A EP0554640A1 EP 0554640 A1 EP0554640 A1 EP 0554640A1 EP 92810090 A EP92810090 A EP 92810090A EP 92810090 A EP92810090 A EP 92810090A EP 0554640 A1 EP0554640 A1 EP 0554640A1
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EP
European Patent Office
Prior art keywords
fluid
measuring device
erosion
cavitation
fluid flows
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
EP92810090A
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German (de)
English (en)
Other versions
EP0554640B1 (fr
Inventor
Johann Friedrich Gülich
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.)
Sulzer Pumpen AG
Original Assignee
Sulzer Pumpen AG
Sulzer AG
Gebrueder Sulzer AG
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 Sulzer Pumpen AG, Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer Pumpen AG
Priority to EP92810090A priority Critical patent/EP0554640B1/fr
Priority to DE59207622T priority patent/DE59207622D1/de
Priority to US08/003,078 priority patent/US5332356A/en
Publication of EP0554640A1 publication Critical patent/EP0554640A1/fr
Application granted granted Critical
Publication of EP0554640B1 publication Critical patent/EP0554640B1/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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/82—Forecasts
    • F05D2260/821—Parameter estimation or prediction

Definitions

  • the invention relates to a method for determining the cavitation-related erosion in fluid-flowed components according to the preamble of claim 1 and an apparatus for performing the method.
  • cavitation occurs in the fluid conveyed under certain conditions.
  • zones with negative pressure occur due to local overspeeds, which lead to the formation of vapor bubbles when the local pressure falls below the vapor pressure of the fluid being pumped.
  • the vapor bubbles are flushed with the flow in zones of higher pressure, where they implode. This creates a very high pressure peak or a very high cavitation intensity locally, which can cause material corrosion or cavitation damage.
  • the measurement of the liquid sound requires that a corresponding pressure measuring device must be introduced into the component through which the fluid flows and has direct contact with the fluid.
  • the creation of a corresponding opening in the outer wall of the component through which the fluid flows is extremely problematic, particularly in existing plants, for example in the nuclear field, for safety reasons. For this reason, the known method for determining the erosion rate is unsuitable, for example, for short-term checks on existing systems.
  • a further disadvantage of the known method is that the pressure measuring device has to be fixed in terms of flow technology within the component through which the fluid flows, in order to avoid measurement errors due to accumulating air bubbles.
  • a structure-borne noise measuring device detects the structure-borne noise or the vibration of the outer wall of the fluid-flowed component and forwards it to a signal processing unit, and that a computer calculates the liquid noise from the processed signal, determines the erosion rate and uses it transmitted to an output unit.
  • the cavitation-related erosion in components through which fluid flows can be derived by detecting the vibration of the pump housing.
  • the cavitation-related liquid sound is transmitted to the pump housing and is detected by a sensor of a structure-borne sound measuring device, amplified, filtered and digitized in a signal processing unit and transmitted to a computer.
  • Additional measurement data acquisition devices such as the outlet pressure measurement device, the suction pressure measurement device, the fluid temperature measurement device or the speed measurement device enable the computer to calculate, for example, the flow rate or the relationship between flow rate and erosion rate.
  • the determined values can be displayed via the output unit, the output unit activating a warning, for example, when a limit value that can be specified via the input unit is exceeded.
  • the imploding vapor bubbles cause pressure waves which can be measured as liquid sound with a pressure measuring device.
  • the pressure waves also set the outer wall of the component through which the fluid flows, for example a pump housing, in vibration, which manifests itself as structure-borne noise and can be measured, for example, by means of an accelerometer which is attached to the outside of the pump housing.
  • Both the liquid sound and the structure-borne sound are dependent on the hydrodynamic cavitation intensity, and are therefore potential parameters for estimating the erosion caused by cavitation.
  • a diagnostic system enables you to determine whether the hydrodynamic cavitation intensity exceeds the cavitation resistance of the material, and thereby to quantify possible damage.
  • Empirical studies have shown that there is a correlation between metal loss due to cavitation-related erosion and liquid noise.
  • E R f (CNL) (1)
  • CNL Cosmetic Noise Level
  • FIG. 1 shows a pump 1 which is driven by a motor 2 via a rotating shaft 3.
  • the pump conveys a fluid from the suction line 5b to the pressure line 5a.
  • a structure-borne noise measuring device 7 detects the vibrations of the outer wall of the pump 1, wherein the structure-borne noise measuring device 7 can be firmly connected to the outer wall or, for example, senses the vibrations of the outer wall without contact.
  • the structure-borne noise measuring device 7 can rest on the outer wall or, for example, be inserted more or less deeply into the outer wall through a bore.
  • the signal conditioning unit 10 processes the vibration signal CV, for example by amplifying, filtering and digitizing it.
  • the output unit 13 can also display, for example, the cumulative erosion, or when a predefinable threshold is exceeded, for Example of the erosion rate E R , trigger a signal such as an alarm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
EP92810090A 1992-02-07 1992-02-07 Procédure et dispositif pour la détermination de l'érosion occasionnée par le cavitation d'éléments traversés par un écoulement de fluides Expired - Lifetime EP0554640B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP92810090A EP0554640B1 (fr) 1992-02-07 1992-02-07 Procédure et dispositif pour la détermination de l'érosion occasionnée par le cavitation d'éléments traversés par un écoulement de fluides
DE59207622T DE59207622D1 (de) 1992-02-07 1992-02-07 Verfahren und Vorrichtung zum Bestimmen der kavitationsbedingten Erosion in fluiddurchströmten Komponenten
US08/003,078 US5332356A (en) 1992-02-07 1993-01-11 Process and a device for determining the erosion caused by cavitation in components through which fluid flows

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92810090A EP0554640B1 (fr) 1992-02-07 1992-02-07 Procédure et dispositif pour la détermination de l'érosion occasionnée par le cavitation d'éléments traversés par un écoulement de fluides

Publications (2)

Publication Number Publication Date
EP0554640A1 true EP0554640A1 (fr) 1993-08-11
EP0554640B1 EP0554640B1 (fr) 1996-12-04

Family

ID=8211867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810090A Expired - Lifetime EP0554640B1 (fr) 1992-02-07 1992-02-07 Procédure et dispositif pour la détermination de l'érosion occasionnée par le cavitation d'éléments traversés par un écoulement de fluides

Country Status (3)

Country Link
US (1) US5332356A (fr)
EP (1) EP0554640B1 (fr)
DE (1) DE59207622D1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0742372A1 (fr) * 1995-05-11 1996-11-13 KSB Aktiengesellschaft Système de surveillance pour détecter l'intensité de la cavitation
DE19744990C1 (de) * 1997-10-13 1999-03-04 Siemens Ag Verwendung eines Verfahrens und Einrichtung zum Überwachen eines Filters auf Funktionsfähigkeit
EP0904818A1 (fr) * 1997-09-26 1999-03-31 Exxon Research And Engineering Company Méthode de détermination l'état de fonctionnement de colonnes d'interaction de phases liquide et gazeuse
DE19854383A1 (de) * 1998-11-25 2000-05-31 Asea Brown Boveri Verfahren und Anlage zur Vermeidung von Kavitation in einer Sattwasser fördernden Pumpe
EP2148119A3 (fr) * 2008-07-24 2010-03-17 Deere & Company Agencement de raccord de fluides, combinaison d'un agencement de raccord de fluides avec un agencement de contrôle et combinaison d'une pompe volumétrique variable avec un système de contrôle
ITBS20090186A1 (it) * 2009-10-16 2011-04-17 Turboden Srl Metodo e sistema di protezione contro la presenza di frazioni volatili in circuiti di olio diatermico
CN103576640A (zh) * 2012-07-31 2014-02-12 费希尔-罗斯蒙特系统公司 用于监测泵气蚀的系统和方法
WO2017001090A1 (fr) * 2015-07-02 2017-01-05 Robert Bosch Gmbh Procédé de surveillance de la capacité de fonctionnement d'une pompe conçue pour le refoulement d'un fluide
CN112067283A (zh) * 2020-09-16 2020-12-11 浙江工业大学 一种基于声音功率谱的调节阀气蚀诊断系统及其诊断方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6944097B1 (en) * 2000-07-10 2005-09-13 Sez America, Inc. Method and device for measuring cavitation
US6663349B1 (en) 2001-03-02 2003-12-16 Reliance Electric Technologies, Llc System and method for controlling pump cavitation and blockage
US6655922B1 (en) * 2001-08-10 2003-12-02 Rockwell Automation Technologies, Inc. System and method for detecting and diagnosing pump cavitation
DE102004016804A1 (de) * 2004-04-06 2005-10-27 Daimlerchrysler Ag Vorrichtung zur Körperschallmessung
US7797142B2 (en) * 2006-12-21 2010-09-14 Caterpillar Inc Simulating cavitation damage
US7912687B2 (en) * 2006-12-29 2011-03-22 Caterpillar Inc. Methods of predicting cavitation damage
IT1396001B1 (it) * 2009-04-28 2012-11-09 Nuovo Pignone Spa Sistema di recupero dell'energia in un impianto per la compressione di gas
EP2566992A1 (fr) 2010-05-07 2013-03-13 B9 Plasma, Inc. Broyage à écrasement de bulles commandé
US10317875B2 (en) * 2015-09-30 2019-06-11 Bj Services, Llc Pump integrity detection, monitoring and alarm generation
JP6693198B2 (ja) * 2016-03-18 2020-05-13 株式会社Ihi 異常判定装置及び異常判定方法
CN108087314A (zh) * 2017-12-12 2018-05-29 北京智信远景软件技术有限公司 一种泵体监测系统及方法
CN111751105B (zh) * 2020-04-28 2022-08-05 浙江工业大学 基于振动数据功率谱的调节阀气蚀诊断方法
US11713237B2 (en) * 2020-07-14 2023-08-01 Paragon Tank Truck Equipment, Llc Liquid discharge system including liquid product pump having vibration sensor
US11430319B1 (en) * 2021-09-29 2022-08-30 Caterpillar Inc. Cavitation detection system

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US3761196A (en) * 1971-08-26 1973-09-25 E Weinert Cavitation control system
DE3520538A1 (de) * 1985-06-07 1986-12-11 Kraftwerk Union AG, 4330 Mülheim Verfahren und einrichtung zum betrieb einer kreiselpumpe

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US3876326A (en) * 1974-01-30 1975-04-08 Simmonds Precision Products Surge control system
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JPS5958164A (ja) * 1982-09-28 1984-04-03 Toshiba Corp 多段水力機械の運転制御方法
DE3520734A1 (de) * 1985-06-10 1986-12-11 Kraftwerk Union AG, 4330 Mülheim Verfahren und einrichtung zum betrieb einer kreiselpumpe
US4687410A (en) * 1985-08-19 1987-08-18 General Electric Company Torque limiter for prime mover
EP0240684B1 (fr) * 1986-03-10 1992-01-29 Siemens Aktiengesellschaft Appareil pour le traitement électronique des données de fonctionnement d'un moteur électrique
JPS6315219A (ja) * 1986-07-08 1988-01-22 Seikosha Co Ltd 投写式液晶表示装置
US4781525A (en) * 1987-07-17 1988-11-01 Minnesota Mining And Manufacturing Company Flow measurement system
US5140529A (en) * 1990-08-14 1992-08-18 Peifer Wilhelm M Reverse torque preload spindle

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US3761196A (en) * 1971-08-26 1973-09-25 E Weinert Cavitation control system
DE3520538A1 (de) * 1985-06-07 1986-12-11 Kraftwerk Union AG, 4330 Mülheim Verfahren und einrichtung zum betrieb einer kreiselpumpe

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DATABASE WPIL Section EI, Week 8231, Derwent Publications Ltd., London, GB; Class S, AN 82K4286E & SU-A-872 972 (DENISOV) 18. Oktober 1981 *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 94 (M-574)25. März 1987 & JP-A-61 244 896 ( SHIPBUILD RES. ASSOC. JAPAN ) 31. Oktober 1986 *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 144 (M-951)19. März 1990 & JP-A-20 10 000 ( ISHIKAWAJIMA HARIMA ) 12. Januar 1990 *
WORLD PUMPS Nr. 296, Mai 1991, OXFORD, GB Seite 30 'cavitation monitor' *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0742372A1 (fr) * 1995-05-11 1996-11-13 KSB Aktiengesellschaft Système de surveillance pour détecter l'intensité de la cavitation
EP0904818A1 (fr) * 1997-09-26 1999-03-31 Exxon Research And Engineering Company Méthode de détermination l'état de fonctionnement de colonnes d'interaction de phases liquide et gazeuse
US5974887A (en) * 1997-09-26 1999-11-02 Exxon Research And Engineering Co. Method for determining operating status of liquid phase gas-phase interaction columns
DE19744990C1 (de) * 1997-10-13 1999-03-04 Siemens Ag Verwendung eines Verfahrens und Einrichtung zum Überwachen eines Filters auf Funktionsfähigkeit
EP0908212A1 (fr) * 1997-10-13 1999-04-14 Siemens Aktiengesellschaft Procédé et dispositif pour suveiller le fonctionnement d'un filtre
US6398510B1 (en) 1998-11-25 2002-06-04 Alstom Method and system for avoiding cavitation in a pump conveying saturated water
DE19854383A1 (de) * 1998-11-25 2000-05-31 Asea Brown Boveri Verfahren und Anlage zur Vermeidung von Kavitation in einer Sattwasser fördernden Pumpe
EP2148119A3 (fr) * 2008-07-24 2010-03-17 Deere & Company Agencement de raccord de fluides, combinaison d'un agencement de raccord de fluides avec un agencement de contrôle et combinaison d'une pompe volumétrique variable avec un système de contrôle
US8186393B2 (en) 2008-07-24 2012-05-29 Deere & Company Fluid coupler including valve arrangement for connecting intake conduit of sprayer to transfer conduit of nurse tank during refill operation
ITBS20090186A1 (it) * 2009-10-16 2011-04-17 Turboden Srl Metodo e sistema di protezione contro la presenza di frazioni volatili in circuiti di olio diatermico
CN103576640A (zh) * 2012-07-31 2014-02-12 费希尔-罗斯蒙特系统公司 用于监测泵气蚀的系统和方法
CN103576640B (zh) * 2012-07-31 2019-04-30 费希尔-罗斯蒙特系统公司 用于监测泵气蚀的系统和方法
WO2017001090A1 (fr) * 2015-07-02 2017-01-05 Robert Bosch Gmbh Procédé de surveillance de la capacité de fonctionnement d'une pompe conçue pour le refoulement d'un fluide
CN112067283A (zh) * 2020-09-16 2020-12-11 浙江工业大学 一种基于声音功率谱的调节阀气蚀诊断系统及其诊断方法

Also Published As

Publication number Publication date
US5332356A (en) 1994-07-26
EP0554640B1 (fr) 1996-12-04
DE59207622D1 (de) 1997-01-16

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