EP2247890A1 - Procédé et dispositif pour déterminer une fuite dans un composant d'installation et/ou un état d'un composant d'installation - Google Patents

Procédé et dispositif pour déterminer une fuite dans un composant d'installation et/ou un état d'un composant d'installation

Info

Publication number
EP2247890A1
EP2247890A1 EP09713708A EP09713708A EP2247890A1 EP 2247890 A1 EP2247890 A1 EP 2247890A1 EP 09713708 A EP09713708 A EP 09713708A EP 09713708 A EP09713708 A EP 09713708A EP 2247890 A1 EP2247890 A1 EP 2247890A1
Authority
EP
European Patent Office
Prior art keywords
detected
sound
analyzed
system component
unit
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Withdrawn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
EP09713708A
Other languages
German (de)
English (en)
Inventor
Thomas Dobler
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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP2247890A1 publication Critical patent/EP2247890A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/38—Investigating fluid-tightness of structures by using light

Definitions

  • the invention relates to a method and a device for determining a leak in at least one plant component and / or a state of at least one plant component of a plant, in particular in a line, an aggregate, a fitting, a container, etc. of a pipeline network, e.g. an oil or gas plant or a chemical plant or a pumping station.
  • a pipeline network e.g. an oil or gas plant or a chemical plant or a pumping station.
  • a leak in the sense of the invention is understood in particular to mean a leaky, defective point in a wall of a pipe, a container, etc.
  • a leakage is understood in particular to mean a loss of the medium transported in the system component, for example by evaporation or percolation.
  • the object of the invention is to provide a method and a device for determining a leak and / or a state of at least one plant component, which enables in a simple manner a safe, fast, automatic and dynamic monitoring of plant components of the plant, which may not be visually visible ,
  • the object is achieved by the features specified in claim 1.
  • the device concerning the object is achieved by the features specified in claim 15.
  • At least one subarea of one or more system components is optically monitored, wherein sound emissions occurring in at least one of the system components are detected, analyzed and localized and acoustically localized sound emission areas the relevant system component is additionally optically recorded and analyzed.
  • system data in particular metrologically recorded system data, such as pressure drop, temperature changes, can be determined and used to determine the leak and / or the condition of the system component and evaluated.
  • system data in particular metrologically recorded system data, such as pressure drop, temperature changes, can be determined and used to determine the leak and / or the condition of the system component and evaluated.
  • the acoustically and / or optically acquired data ie the recorded acoustic emission data or the acquired image data, are stored in a data memory. This allows a subsequent research and in particular temporal evaluation of recorded sound emission data and image data for certain situations.
  • the place of origin of the sound emissions is determined on the basis of an analysis of at least one parameter of the sound emissions and additionally optically detected and analyzed.
  • at least one parameter of the sound emissions is detected and analyzed and used to adapt the optical detection of the acoustically localized sound emission area.
  • At least one frequency, a frequency range, an intensity and / or an amplitude of sound waves of the sound emissions are determined and analyzed as parameters of the sound emissions.
  • changes of the at least one parameter of the sound waves are determined and analyzed.
  • changes of the parameter changes of a frequency, a frequency range, an intensity and / or an amplitude of the sound waves and / or at least one newly added frequency and / or frequency range and / or at least one falling frequency and / or frequency range in the detected sound wave range certainly.
  • the detected changes of at least one of the parameters are monitored for exceeding and / or falling below at least one predefinable threshold value. If at least one predetermined threshold value is exceeded or undershot, a critical situation in the area of the system component may be present. In order to identify this reliably, this identified critical danger area is additionally optically recorded and evaluated.
  • a time profile of changes in at least one parameter of the sound waves can be optically detected and monitored.
  • a message, warning and / or an alarm can be tactile, audible and / or visual when identifying a possible hazardous situation for this identified area of the system.
  • a detected change in the frequency range of the sound waves is identified as a change in a rotational speed of a system component, in particular an assembly or a fitting, in particular a pump or a motor.
  • newly added frequencies are identified as a medium exit, eg of bulk material, liquid or gas, from the installation component. Elimination of previous detected frequencies is preferably identified as a failure of an aggregate, in particular a pump or an engine.
  • a change in the intensity and / or amplitude of the sound waves is identified in particular as an explosion and / or a bang.
  • further hazardous situations can be identified on the basis of correspondingly identified sound emissions analyzed on the basis of stored threshold values and / or stored sound patterns.
  • At least one optical recording unit is provided for monitoring a partial area of one or more system components, one or more acoustical sections being provided in the area of at least one of the system components Recording units is arranged or are, by means of which or which occurring sound emissions can be detected, analyzed and localized, the opti- see recording unit is controlled so that these acoustically localized acoustic emission areas of the relevant system component additionally recorded and analyzed optically.
  • the at least one acoustic recording unit and / or the optical recording unit are expediently provided with one
  • Evaluation unit connected.
  • the evaluation unit may be an integral part of the acoustic or optical recording unit.
  • the acoustic recording unit is a sound pickup, in particular a sound transducer, e.g. a microphone.
  • a sound transducer e.g. a microphone
  • another suitable means for recording the sound waves of the sound emissions may be provided that converts the detected sound waves into an evaluable electrical signal.
  • the optical recording unit is preferably a camera or another suitable device, such as an infrared camera, a radar unit, an omnidirectional camera, a stereo camera.
  • At least the evaluation is connected to at least one output unit.
  • the optical and / or the acoustic recording unit may be connected to the output unit.
  • the output unit is a screen, a loudspeaker and / or another suitable means.
  • the optical and / or acoustical recording unit, the evaluation unit and / or the output unit are preferably connected to one another via a data transmission unit, eg a data bus, a radio link, a point-to-point connection.
  • the single FIGURE shows a device 1 for determining a leak in at least one system component 2.1 to 2.n and / or a state of at least one of the system components 2.1 to 2.n a plant.
  • the plant is for example a gas, oil or chemical plant or a remote distribution or pumping station in a distribution network, the system components 2.1 to 2.n a line network 2.1, individual lines 2.2, fittings 2.3, such as pumps, valves, flaps, motors , a distribution unit 2.4, a container 2.5, such as tanks, etc. for guiding and / or storing at least one medium, such as Bulk, gas, a liquid, e.g. Oil, water, etc. includes.
  • the optical recording unit 3 is designed, for example, as a camera, in particular an omnidirectional camera, a stereo camera, a radar unit, which has a predetermined detection area 4.
  • optical recording unit 3 By means of the optical recording unit 3, subregions of the system, in particular individual or several system components, are used. components 2.1 to 2.n detected and for example, optical changes, such as a medium leakage from one of the system components 2.1 to 2.n, an explosion, a manipulation of one of the system components 2.1 to 2.n by unauthorized persons or entitled monitors. This can be done automatically, for example, via a corresponding image processing of the image data captured by the optical recording unit 3 and / or by a user, for example a person in a plant control room or system control unit with on-screen monitoring.
  • optical changes such as a medium leakage from one of the system components 2.1 to 2.n, an explosion, a manipulation of one of the system components 2.1 to 2.n by unauthorized persons or entitled monitors.
  • the device 1 in each case comprises at least one or more acoustic recording units 5 with an associated recording area 10.
  • acoustic transducers also referred to as acoustic sensors or sound receivers
  • microphones for example, for monitoring lines 2.2 structure-borne noise microphones are used, which are arranged directly on the relevant line 2.2.
  • the sound transducers or transducers can be indirectly connected to the relevant system component 2.1 to 2.n, so that the airborne sound emanating from the system component 2.1 to 2.n can be measured.
  • commercial microphones or so-called piezoelectric sensors can be used as acoustic recording units 5.
  • the acoustic recording units 5 By means of the acoustic recording units 5, the sound waves emitted by a noise source, for example a medium outlet at a leak, a valve in operation, are emitted to the environment. In detail, the sound emissions occurring in the recording area 10 of the respective acoustic recording unit 5 are detected, analyzed and localized. In this case, the optical recording unit 3 is based on the acoustically localized sound emission regions controlled that this additionally visually detects and analyzes the acoustically localized sound emission regions of the relevant system component 2.1 to 2.n.
  • the optical recording unit 3 is controlled accordingly, in particular moved in the direction in which the sound emission occurs, so that this sound emission area additionally optically monitored becomes.
  • the optical pickup unit 3 is movable in at least one, preferably in at least three degrees of freedom.
  • the optical pickup unit 3 can be rotated about its longitudinal axis and / or inclined along it.
  • the optical pickup unit 3 may be moved in position, for example, moved forward, to the side, etc., e.g. be rolled.
  • the optical recording unit 3 is held or stored accordingly.
  • At least one parameter of the sound emissions is determined and analyzed.
  • the place of origin of the sound emission can be localized and the optical recording unit 3 can be aligned accordingly, so that the place of origin can additionally be optically recorded and analyzed.
  • the acoustic recording units 5 are or are connected to an evaluation unit 6.
  • the at least one optical recording unit 3 is likewise connected to the evaluation unit 6.
  • the acoustic recording units 5 and the optical recording unit 3 are connected to the evaluation unit 6 via a wired connection 9, for example a cable or a serial data transmission unit. It is also possible to use another suitable data transmission unit, in particular a wireless connection, eg a radio connection.
  • the evaluation unit 6 can be integrated in one of the receiving units 5 or in the optical receiving unit 3, in which case the acoustic receiving units 5 and the optical receiving units 3 are connected to one another.
  • the evaluation unit 6 is connected to at least one output unit 7, for example via a data bus 8 or another suitable data transmission unit.
  • the output unit 7 is a screen in a plant waiting room.
  • the output unit 7 may be a speaker or other suitable means.
  • the image data and the messages, warnings and / or alarms can be output optically and / or acoustically via suitable means.
  • At least one of the parameters of the acoustic emissions is detected by means of one or more of the acoustic recording unit 5 and fed to the evaluation unit 6 for analysis.
  • at least one frequency, a frequency range, an intensity and / or an amplitude of sound waves of the sound emissions are determined and analyzed as parameters of the sound emissions.
  • sound pressure levels, sound intensity levels and / or other suitable parameters of the detected sound waves by means of in the evaluation unit 6 implemented evaluation algorithms and / or filters are analyzed.
  • the detected parameters can be analyzed by means of a threshold value comparison and monitored for exceeding and / or falling below specified threshold values. If a predetermined threshold value is exceeded and / or undershot, the optical pickup unit 3 is correspondingly controlled, in particular moved.
  • the optical signals correspondingly aligned on the basis of the acoustic signals
  • Recording unit 3 carried out an assessment of the criticality of the situation at the source of the acoustic emission. This allows a differentiated evaluation and determination of the dangerous situation.
  • signals from other sensors such as pressure sensors, level sensors, in addition to the combination of acoustically and optically detected signals can be detected and taken into account in the evaluation. That The microphone and camera signals can be supplemented by further signals, such as pressure signals, level signals. This allows, for example, a mutual verification of variously detected signals for safe and accurate determination of the situation, in particular for determining whether a leak has occurred in one of the system components 2.1 to 2.n or not.
  • mechanically driven system components 2.3 such as, for example, a valve, a pump, a drive motor, a valve, a flap
  • mechanically driven system components 2.3 can be examined and analyzed for characteristic sound developments and acoustic emissions associated with the mechanical drive.
  • an analysis of the corresponding sound waves stand, in particular a possible wear, a dry run, a cavitation, an imbalance of the system component 2.3 are identified.
  • temporal changes of one or more parameters of the sound waves in particular of one or more variable parameters can be determined and analyzed. Changes in a frequency, a frequency range, an intensity, an amplitude can be determined, for example, as changes to one or more parameters. Also, a newly added frequency and / or a newly added frequency range and / or at least one attributable frequency and / or a corresponding frequency range in the detected sound wave range can be determined.
  • the detected changes of at least one of the parameters are also monitored for overshoot and / or undershoot of at least one predefinable threshold value.
  • this allows a further evaluation of the criticality of the detected sound signals and a resulting control, in particular movement of the optical recording unit 3 and / or a subsequent evaluation of a possible dangerous situation.
  • a detected change in the frequency range of the sound waves as a change in a rotational speed of a plant component 2.3 e.g. an aggregate, in particular a pump or a motor can be identified.
  • Newly added frequencies in the detected sound wave range can be identified as a medium exit from the acoustically monitored system component 2.1 to 2.n.
  • the elimination of previous detected frequencies in the detected sound wave range can be identified as a failure of one of the system components 2.3, eg of an aggregate, in particular of a pump or of an engine.
  • An explosion and / or a bang is identified, for example, by means of a change in the intensity and / or amplitude of the detected sound waves and exceeding of maximum threshold values.
  • a control signal is given to the output unit 7 by means of the evaluation unit 6, so that optionally at least one message, a warning and / or an alarm is output can be.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour déterminer une fuite dans au moins un composant d'installation (2.1 à 2.n) et/ou un état d'un composant d'installation (2.1 à 2.n) d'une installation, au moins un secteur partiel d'un ou de plusieurs composants d'installation (2.1 à 2.n) étant surveillé optiquement. Selon l'invention, des émissions sonores apparaissant dans ou au niveau d'au moins un des composants d'installation (2.1 à 2.n) sont captées, analysées et localisées, des plages d'émissions sonores, localisées de manière acoustique, des composants d'installation (2.1 à 2.n) respectifs étant de manière supplémentaire captées et analysées optiquement.
EP09713708A 2008-02-25 2009-02-10 Procédé et dispositif pour déterminer une fuite dans un composant d'installation et/ou un état d'un composant d'installation Withdrawn EP2247890A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008010853A DE102008010853A1 (de) 2008-02-25 2008-02-25 Verfahren und Vorrichtung zur Ermittlung eines Lecks in einer Anlagenkomponente und/oder eines Zustands einer Anlagenkomponente
PCT/EP2009/051497 WO2009106421A1 (fr) 2008-02-25 2009-02-10 Procédé et dispositif pour déterminer une fuite dans un composant d'installation et/ou un état d'un composant d'installation

Publications (1)

Publication Number Publication Date
EP2247890A1 true EP2247890A1 (fr) 2010-11-10

Family

ID=40548069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09713708A Withdrawn EP2247890A1 (fr) 2008-02-25 2009-02-10 Procédé et dispositif pour déterminer une fuite dans un composant d'installation et/ou un état d'un composant d'installation

Country Status (4)

Country Link
US (1) US8638226B2 (fr)
EP (1) EP2247890A1 (fr)
DE (1) DE102008010853A1 (fr)
WO (1) WO2009106421A1 (fr)

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DE102015119251A1 (de) * 2015-11-09 2017-05-11 Prv-Gesellschaft Für Vermögensverwaltung, Immobilien Und Dienstleistungen M.B.H. Vorrichtung zur Überwachung eines Flüssigkeit enthaltenden Leitungssystems, beispielsweise auf Leckage oder unerwünschte Flüssigkeitsentnahme
CN105757459B (zh) * 2016-03-02 2018-12-18 中国矿业大学 一种瓦斯抽采管网参数监测系统及漏点精确定位方法
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CN109654384B (zh) * 2019-01-29 2024-04-02 南京工业大学 基于pso-vmd算法的管道泄漏检测装置及检测方法
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DE102023100661A1 (de) 2023-01-12 2024-07-18 Westnetz Gmbh Verfahren zur Überwachung einer Gasdruckregel- und Messanlage

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Also Published As

Publication number Publication date
US20100328067A1 (en) 2010-12-30
DE102008010853A1 (de) 2009-09-10
WO2009106421A1 (fr) 2009-09-03
US8638226B2 (en) 2014-01-28

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