EP2205828A2 - Procédé et dispositif pour déterminer in situ les états de fonctionnements de machines-outils - Google Patents

Procédé et dispositif pour déterminer in situ les états de fonctionnements de machines-outils

Info

Publication number
EP2205828A2
EP2205828A2 EP08802779A EP08802779A EP2205828A2 EP 2205828 A2 EP2205828 A2 EP 2205828A2 EP 08802779 A EP08802779 A EP 08802779A EP 08802779 A EP08802779 A EP 08802779A EP 2205828 A2 EP2205828 A2 EP 2205828A2
Authority
EP
European Patent Office
Prior art keywords
drive shaft
clamp
strain sensors
strain
detection
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Withdrawn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
EP08802779A
Other languages
German (de)
English (en)
Inventor
Eberhard Schlücker
Jan Leilich
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.)
Friedrich Alexander Universitaet Erlangen Nuernberg
Original Assignee
Friedrich Alexander Universitaet Erlangen Nuernberg
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 Friedrich Alexander Universitaet Erlangen Nuernberg filed Critical Friedrich Alexander Universitaet Erlangen Nuernberg
Publication of EP2205828A2 publication Critical patent/EP2205828A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/108—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving resistance strain gauges
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/14—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft
    • G01L3/1407—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving springs
    • G01L3/1428—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving springs using electrical transducers
    • G01L3/1457—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving springs using electrical transducers involving resistance strain gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants

Definitions

  • the invention relates to a method for the in-situ determination of the operating states of working machines, in particular of pumps, including progressing cavity pumps, according to the preamble of claim 1.
  • the invention further relates to a device provided for carrying out this method according to the preamble of claim 7.
  • the strain sensors are mounted directly on the drive shaft of the working machine.
  • strain sensors it is also advantageous to attach the strain sensors to a separate, releasably surrounding the drive shaft device.
  • the measurement signals detected by the strain sensors are amplified by means of an amplifier.
  • an amplifier any system can be used. Only for the sake of example be in mentions the commercially available Microstrain V-link system.
  • the measurement signals can then be transmitted wirelessly to a receiver.
  • the device provided for carrying out the described method measures the invention as an at least two-part clamp, which is provided for clamping but detachable attachment to the drive shaft of the working machine and is provided on the inside with strain sensors, in particular with strain gauges, in such an arrangement and attachment in that they enable the detection of torque and axial load of the drive shaft.
  • strain sensors are arranged in full bridge circuit on the clamp. A particularly good handling results when the clamp is thin-walled.
  • the clamp is formed as an elongate member having an axially extending sidecut. This makes it possible to easily increase the sensitivity of the clamp serving as a measuring device as desired. Furthermore, it may be expedient to balance the clamp in certain applications, thereby eliminating unwanted extraneous influences in the detected measured values.
  • the invention can be advantageously applied not only to the aforementioned progressive cavity pumps, but also to pumps generally, i. in particular in such machines, whose operating principle generates an axial load on the drive shaft.
  • pumps generally, i. in particular in such machines, whose operating principle generates an axial load on the drive shaft.
  • screw pumps, helical rotary pumps, etc. e.g. generally called rotating positive displacement pumps.
  • Fig. 2a one half of the clamp in plan view and interior view
  • Fig. 3 in perspective, mounted on the drive shaft clamp, including its wiring and
  • Fig. 1 carried out in the illustrated embodiment, the detection of the operating conditions on the drive shaft 1 of an eccentric screw pump, not shown.
  • the detection by means of two sets of strain gauges 2, 3. are mounted in the illustrated embodiment directly on the drive shaft 1 on the outer circumference, namely at the same height, such that the set of each offset by 180 degrees attached Strain gauge 2 can detect the torque M of the drive shaft, while the set of equally offset by 180 degrees staggered strain gauges 3 can detect the axial load F 3x of the drive shaft 1.
  • FIGS. 2 and 3 The actual measuring device for detecting the torque M and the axial load F ax of the drive shaft 1 is shown schematically in FIGS. 2 and 3 and consists in the embodiment shown of a clamp 4. This serves for releasable attachment to the drive shaft 1 and is to this Purpose of two parts, an upper part 5 and a lower part 6, formed.
  • the attachment of the clamp 4 to the drive shaft 1 is easily and quickly possible by these are placed with their upper part 5 and lower part 6 to the drive shaft 1 and releasably connected by means of screws 7.
  • the construction of the clamp 4 is clearly shown in detail in FIG. 2. This results in particular advantages when the clamp 4 is thin-walled and made of a material with low specific weight, in the present case made of aluminum.
  • the clamp 4 is formed as an elongated member having a central, axially extending sidecut, wherein the strain gauge sets 2, 3 in.
  • the of Fig. 2a apparent manner are mounted at the height of the sidecut.
  • FIG. 4 shows in the diagram a typical signal curve of the detected measured values during startup operation.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Combustion & Propulsion (AREA)
  • Geophysics (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

La présente invention a pour objet un procédé pour déterminer in situ les états de fonctionnement de machines-outils, en particulier de pompes, y compris des pompes à vis excentrée. La détection et la surveillance des états de fonctionnement ont lieu sur l'arbre d'entraînement (1) de la machine-outil et sont réalisées à l'aide de capteurs de déformation, en particulier à l'aide de jauges extensométriques (2, 3), les capteurs étant agencés et installés de manière à permettre la détection du couple (M) et de la charge axiale (Fax) de l'arbre d'entraînement (1). Dans un dispositif prévu pour réaliser ce procédé, l'agencement est tel qu'il est constitué d'au moins un collier de serrage (4) en deux parties permettant une installation amovible sur l'arbre d'entraînement (1). Dans un tel agencement et une telle installation, le collier est pourvu, sur le côté interne, de capteurs de déformation, en particulier de jauges extensométriques (2, 3), permettant la détection du couple (M) et de la charge axiale (Fax) de l'arbre d'entraînement (1).
EP08802779A 2007-10-04 2008-10-02 Procédé et dispositif pour déterminer in situ les états de fonctionnements de machines-outils Withdrawn EP2205828A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007047500A DE102007047500A1 (de) 2007-10-04 2007-10-04 Verfahren und Vorrichtung zur In-Situ-Bestimmung der Betriebszustände von Arbeitsmaschinen
PCT/EP2008/008393 WO2009043589A2 (fr) 2007-10-04 2008-10-02 Procédé et dispositif pour déterminer in situ les états de fonctionnements de machines-outils

Publications (1)

Publication Number Publication Date
EP2205828A2 true EP2205828A2 (fr) 2010-07-14

Family

ID=40418092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08802779A Withdrawn EP2205828A2 (fr) 2007-10-04 2008-10-02 Procédé et dispositif pour déterminer in situ les états de fonctionnements de machines-outils

Country Status (3)

Country Link
EP (1) EP2205828A2 (fr)
DE (1) DE102007047500A1 (fr)
WO (1) WO2009043589A2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025520A1 (de) 2010-06-29 2011-12-29 Voith Patent Gmbh Drehmomenterfassungsvorrichtung
US9121258B2 (en) 2010-11-08 2015-09-01 Baker Hughes Incorporated Sensor on a drilling apparatus
CN102322988A (zh) * 2011-05-31 2012-01-18 中国航空动力机械研究所 测试万向节轴向力的方法及装置
US9057247B2 (en) 2012-02-21 2015-06-16 Baker Hughes Incorporated Measurement of downhole component stress and surface conditions
CZ304633B6 (cs) * 2012-10-12 2014-08-13 Univerzita J. E. Purkyně V Ústí Nad Labem Zařízení pro únavové zkoušky ohybem
DE102013000090A1 (de) * 2013-01-08 2014-07-10 Ernst Manner Telemetrisches Torsionsmesssystem zur Erfassung des Drehmoments am Wellenkörper mit kontaktloser Signalübertragung
CN104807573A (zh) * 2015-04-25 2015-07-29 成都诚邦动力测试仪器有限公司 一种基于逻辑放大处理的扭矩传感器
CN104807574A (zh) * 2015-04-25 2015-07-29 成都诚邦动力测试仪器有限公司 一种基于电压补偿的扭矩传感器
CN104807577A (zh) * 2015-04-25 2015-07-29 成都诚邦动力测试仪器有限公司 一种基于信号线性驱动的扭矩传感器
CN106089190A (zh) * 2016-06-08 2016-11-09 中国石油天然气股份有限公司 一种采油螺杆泵固液气三相流地面模拟实验装置及方法
CN114144646A (zh) * 2019-05-17 2022-03-04 麻省理工学院 用于监测机械系统的健康和性能的装置和方法
CN111706541A (zh) * 2020-07-01 2020-09-25 中国北方车辆研究所 履带式车辆散热风扇扭矩的测定方法
DE102021103615A1 (de) 2021-02-16 2022-08-18 Vieweg GmbH Dosier- und Mischtechnik Exzenterschnecken-Dosiervorrichtung und Verfahren zur Steuerung einer Exzenterschnecken-Dosiervorrichtung

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US3850030A (en) * 1973-10-01 1974-11-26 Acurex Corp Apparatus for measuring the torsion of a rotating shaft
NL8303744A (nl) * 1983-10-31 1985-05-17 Techno Diagnosis Bv Inrichting voor het meten van vervorming van een as.
EP0410133B1 (fr) * 1989-07-24 1994-03-02 Roland Adam Renz Dispositif pour la détection du couple de rotation transféré dans un arbre, spécialement dans un arbre arrangé entre une pièce à essayer et une machine d'essais
DE4215306A1 (de) * 1992-05-09 1993-11-11 Philips Patentverwaltung Dehnungstransformator zur Drehmomentmessung einer zylindrischen Welle
US5546817A (en) * 1993-06-04 1996-08-20 Liberty Technologies, Inc. Stem torque sensor
DE19857770A1 (de) * 1998-12-07 2000-06-08 Mannesmann Ag Drehmomentmeßvorrichtung an rotierenden Bauteilen
DE10023961B4 (de) * 2000-05-16 2006-10-19 Sew-Eurodrive Gmbh & Co. Kg System zur Messung physikalischer Größen bei einer Achse oder drehbaren Welle
DE10059917A1 (de) * 2000-12-01 2002-06-06 Cetex Chemnitzer Textilmaschin Messnabe
DE10139524A1 (de) * 2001-08-10 2003-02-20 Sms Demag Ag Vorrichtung zur Messung von Belastungen an rotierenden Bauteilen
DE10153208A1 (de) * 2001-10-27 2003-05-15 Bosch Gmbh Robert Verfahren zur Herstellung eines Sensorelementes und dessen Verwendung
US6925892B2 (en) * 2003-12-17 2005-08-09 Sauer-Danfoss, Inc. Method and means for monitoring torque in a hydraulic power unit

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See references of WO2009043589A2 *

Also Published As

Publication number Publication date
WO2009043589A3 (fr) 2009-06-18
DE102007047500A1 (de) 2009-04-09
WO2009043589A2 (fr) 2009-04-09

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