DE102006031919A1 - Acoustic device for investigating overhead wire for electric railway has receives part of ultrasonic pulse reflected from wire and uses lubricant as ultrasonic coupling medium between transmitter/receiver unit and wire - Google Patents
Acoustic device for investigating overhead wire for electric railway has receives part of ultrasonic pulse reflected from wire and uses lubricant as ultrasonic coupling medium between transmitter/receiver unit and wire Download PDFInfo
- Publication number
- DE102006031919A1 DE102006031919A1 DE200610031919 DE102006031919A DE102006031919A1 DE 102006031919 A1 DE102006031919 A1 DE 102006031919A1 DE 200610031919 DE200610031919 DE 200610031919 DE 102006031919 A DE102006031919 A DE 102006031919A DE 102006031919 A1 DE102006031919 A1 DE 102006031919A1
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- Germany
- Prior art keywords
- wire
- contact wire
- lubricant
- ultrasonic
- acoustic device
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/28—Manufacturing or repairing trolley lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/04—Current collectors for power supply lines of electrically-propelled vehicles using rollers or sliding shoes in contact with trolley wire
- B60L5/08—Structure of the sliding shoes or their carrying means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/262—Linear objects
- G01N2291/2626—Wires, bars, rods
Landscapes
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
Die Erfindung betrifft eine akustische Einrichtung zur Untersuchung eines Fahrdrahtes einer zur elektrischen DC-Energieversorgung eines Schienentriebfahrzeugs bestimmten Oberleitung. Ferner betrifft die Erfindung eine Verwendung eines Schmiermittels, welches zur Minderung des Verschleißes zwischen dem Fahrdraht und einem Stromabnehmer des Schienentriebfahrzeugs vorgesehen ist.The The invention relates to an acoustic device for examination a contact wire to a DC electric power supply Rail traction vehicle specific overhead line. Furthermore, the Invention, a use of a lubricant, which for the reduction of wear between the contact wire and a pantograph of the railcar is provided.
Ein Schienentriebfahrzeug, wie der französische Hochgeschwindigkeitszug „TGV", wird über mindestens einen elektrischen (Strom-)Leiter in Form eines Fahrdrahtes einer DC-Oberleitung (d.h. Gleichstrom-Oberleitung), mit elektrischer Energie versorgt. Der Fahrdraht weist dabei eine Gleichspannung von 1,5 kV. Die Leistungsaufnahme des Schienentriebfahrzeugs von maximal 8,8 MW erfolgt üblicherweise mittels zweier mit dem Fahrdraht in mechanischem Schleifkontakt stehenden Stromabnehmer. Der dabei sich ergebende Gleichstrom beträgt dann maximal 1,5 kA je Schleifleiste. Diese Ströme sind im Vergleich zu den bei AC-Oberleitungen (d.h. Wechselstrom-Oberleitungen) auftretenden Ströme um Größenordnungen höher, so dass sie nicht, wie bei AC-Oberleitungen üblich, durch „selbstschmierende" graphithaltige Schleifleisten am Stromabnehmer übertragen werden können. Die Kontaktfläche des Stromabnehmers ist bei einer solchen DC-Energieversorgung wie der Fahrdraht ebenfalls aus Metall. Für die Schleifleiste kommen hier beispielsweise Stahl oder kupferhaltige Legierungen in Frage. Aufgrund der Metall/Metall-Kontaktes des Stromabnehmers mit dem Fahrdraht ist der abrasive Verschleiß durch das Aufeinanderreiben von Metallen relativ hoch. Dieser Verschleiß wird durch ein Schmiermittel, das auf die Kontaktfläche des Fahrdrahtes als auch auf die Schleifliste aufgebracht wird, minimiert. Aus diesem Grunde betreibt die französische Eisenbahn gesellschaft „SNCF" spezielle Fahrzeuge, mit denen das Schmiermittel aufgebracht und erneuert wird.One Railcars, such as the French high-speed train "TGV", will be over at least an electric (current) conductor in the form of a contact wire one DC overhead line (i.e., DC overhead line), with electrical Energy supplied. The contact wire has a DC voltage of 1.5 kV. The power consumption of the railcar of A maximum of 8.8 MW is usually provided by means of two with the contact wire in mechanical sliding contact Pantographs. The resulting direct current is then maximum 1.5 kA per sanding strip. These currents are compared to the occurring in AC overhead lines (i.e., AC overhead lines) streams by orders of magnitude higher, so that they do not, as usual with AC overhead lines, by "self-lubricating" graphite-containing contact strips transferred to the pantograph can be. The contact surface of the pantograph is in such a DC power supply as the contact wire also made of metal. Come for the sanding strip Here, for example, steel or copper-containing alloys in question. Due to the metal / metal contact of the pantograph with the Contact wire is the abrasive wear caused by friction of metals relatively high. This wear is caused by a lubricant that on the contact surface the contact wire is also applied to the grinding list, minimized. For this reason, the French railway company "SNCF" operates special vehicles, with which the lubricant is applied and renewed.
Eine Beschädigung des Fahrdrahtes zieht in der Regel einen Ausfall der Oberleitung zumindest auf dem vom Oberleitungsausfall betroffenen Streckenabschnitt nach sich. Meistens ist auch die komplette Bahn-Energieversorgung davon betroffen. Mit jedem derartigen Ausfall sind hohe Kosten verbunden. Somit bedarf es einer Fahrdrahtuntersuchungseinrichtung, mit welcher der Fahrdraht auf Materialschäden, wie beispielsweise Risse, untersucht werden kann.A damage of the contact wire usually pulls a failure of the overhead line at least on the section affected by the overhead line failure after himself. Mostly also the complete railway energy supply affected. Each such failure is associated with high costs. Thus, it requires a contact wire inspection device with which the contact wire for material damage, such as cracks, can be examined.
Ultraschallmessmethoden haben sich für die Untersuchung von Materialeigenschaften von Objekten, wie beispielsweise Eisenbahnschienen oder Eisenbahnrädern, aufgrund ihrer Zuverlässigkeit als vorteilhaft erwiesen. Insbesondere Fehlstellen und anderer Anomalien lassen sich besonders genau und zuverlässig bestimmen. Dazu wird ein Ultraschallpuls von einem Schallwandler in das zu untersuchende Objekt gesendet, dort reflektiert und von demselben oder einem weiteren Schallwandler zur weiteren Auswertung erfasst. Zwischen Ultraschallwandler und Messobjekt ist in der Regel stets ein Koppelmittel vorgesehen, das eine möglichst verlustfrei Einkopplung des Ultraschallpulses in das Messobjekt gewährleistet und das eigens hierfür aufzubringen ist.Ultrasonic measurement methods have for the investigation of material properties of objects, such as Railroad tracks or railway wheels, because of their reliability proved to be advantageous. In particular, defects and other anomalies can be determined very precisely and reliably. This will be a Ultrasonic pulse from a transducer into the object to be examined sent, reflected there and from the same or another Sound transducer recorded for further evaluation. Between ultrasonic transducer and measuring object is usually always provided a coupling agent, the one possible loss-free Coupling of the ultrasonic pulse into the test object guaranteed and especially for this is to raise.
Der Erfindung liegt nun die Aufgabe zu Grunde, eine akustische Einrichtung anzugeben, mit welcher ein Fahrdraht einer zur elektrischen DC-Energieversorgung eines Schienentriebfahrzeugs bestimmten Oberleitung einfach und kostengünstig untersucht werden kann. Ferner ist es Aufgabe der Erfindung eine Verwendung eines Schmiermittels, welches zur Minderung des Verschleißes zwischen dem Fahrdraht und einem Stromabnehmer des Schienentriebfahrzeugs vorgesehen ist, für eine akustische Fahrdrahtuntersuchung anzugeben.Of the Invention is now based on the object, an acoustic device specify with which a contact wire one to the DC electric power supply of a railcars simple and certain overhead line economical can be examined. It is another object of the invention Use of a lubricant which is used to reduce wear between the contact wire and a pantograph of the railcar is provided for to specify an acoustic contact wire examination.
Die die akustische Einrichtung betreffende Aufgabe wird erfindungsgemäß durch die Merkmale in Patentanspruch 1 gelöst.The the acoustic device relating task is inventively the features solved in claim 1.
Bei der erfindungsgemäßen akustischen Einrichtung handelt es sich um eine akustische Einrichtung zur Untersuchung eines Fahrdrahtes einer zur elektrischen DC-Energieversorgung eines Schienentriebfahrzeugs bestimmten Oberleitung, wobei zur Minderung des Verschleißes zwischen dem Fahrdraht und einem Stromabnehmer des Schienentriebfahrzeugs der Fahrdraht mit einem hochstromgeeigneten Schmiermittel versehen ist, welche Einrichtung ausgeführt ist mit mindestens einer mindestens einen Ultraschallwandler aufweisenden Sende-/Empfangseinheit für Ultraschallstrahlung, wobei
- – mittels der Sende-/Empfangseinheit mindestens ein Ultraschallpuls in den Fahrdraht aussendbar ist,
- – ein vom Fahrdraht reflektierter Anteil des mindestens einen Ultraschallpulses empfangbar ist, und
- – als ultraschalldurchlässiges Koppelmittel zwischen Sende-/Empfangseinheit und Fahrdraht das Schmiermittel vorgesehen ist.
- By means of the transmitting / receiving unit at least one ultrasonic pulse can be emitted into the contact wire,
- - A reflected from the contact wire portion of the at least one ultrasonic pulse is receivable, and
- - As the ultrasound permeable coupling means between the transmitting / receiving unit and contact wire, the lubricant is provided.
Der Erfindung liegt die Erkenntnis zugrunde, dass das zur Minderung des Verschleißes zwischen dem Fahrdraht und einem Stromabnehmer des Schienentriebfahrzeugs aufgebrachte Schmiermittel eine hinreichend gute Ultraschalldurchlässigkeit aufweist. Aufgrund der guten akustischen Eigenschaften eignet sich das Schleifmittel deshalb auch zur Kopplung der Sende-/Empfangseinheit mit dem Fahrdraht bei einer Ultraschalluntersuchung. Es kann somit auf ein spezielles Koppelmittel, welches üblicherweise bei Ultraschalluntersuchungen notwendig ist, verzichtet werden.The invention is based on the finding that the lubricant applied to reduce the wear between the contact wire and a current collector of the railway traction vehicle has a sufficiently good ultrasonic permeability. Due to the good acoustic properties, the abrasive is therefore also suitable for coupling the transmitter / receiver unit with the contact wire during an ultrasound examination. It can thus ver on a special coupling agent, which is usually necessary for ultrasound examinations be canceled.
Vorteilhafte Ausgestaltungen der akustischen Einrichtung gemäß der Erfindung ergeben sich aus den von Anspruch 1 abhängigen Ansprüchen.advantageous Embodiments of the acoustic device according to the invention will become apparent dependent on claim 1 Claims.
So ist es vorteilhaft, wenn das Schmiermittel eine Mischung aus einer viskosen Flüssigkeit und elektrisch leitfähigen Partikeln ist. Damit ist gewährleistet, dass das Schmiermittel sowohl gute Schallkopplungseigenschaften als auch eine gute elektrische Leitfähigkeit aufweist. Vorzugsweise weist dabei die viskose Flüssigkeit einen organischen Viskoseverstärker und ein Mineralöl auf.So it is advantageous if the lubricant is a mixture of a viscous liquid and electrically conductive Particles is. This ensures that that the lubricant both good Schallkopplungseigenschaften as well as having a good electrical conductivity. Preferably indicates the viscous liquid an organic viscose enhancer and a mineral oil on.
Zudem sind die elektrisch leitfähigen Partikel günstigerweise Graphitpartikel. Besonders vorteilhaft kann dabei die Mischung einen Graphitpartikelanteil von zumindest 20 % aufweisen.moreover are the electrically conductive ones Particles conveniently Graphite particles. The mixture can be particularly advantageous Have graphite particle content of at least 20%.
Vorteilhafterweise ist die Mischung eine Suspension ist. Damit ist gewährleistet, dass die elektrisch leitfähigen Partikel bei Lagerung der Mischung nicht sedimentieren.advantageously, the mixture is a suspension. This ensures that that the electrically conductive Do not sediment particles when the mixture is stored.
Die die Verwendung betreffende Aufgabe wird erfindungsgemäß durch die Merkmale in Patentanspruch 7 gelöst.The the use of the task according to the invention the features solved in claim 7.
Bei der erfindungsgemäßen Verwendung ergeben sich die vorstehend für die erfindungsgemäße akustische Einrichtung erläuterten Vorteile.at the use according to the invention arise the above for the acoustic inventive Institution explained Advantages.
Bevorzugte, jedoch keinesfalls einschränkende Ausführungsbeispiele des Verfahrens und der Anordnung werden nunmehr anhand der Zeichnung näher erläutert. Zur Veranschaulichung ist die Zeichnung nicht maßstäblich ausgeführt und gewisse Merkmale sind schematisiert dargestellt. Im Einzelnen zeigenpreferred but by no means restrictive embodiments of the method and the arrangement will now be explained in more detail with reference to the drawing. to By way of illustration, the drawing is not drawn to scale and certain features are shown schematically. Show in detail
Einander
entsprechende Teile sind in den
In
Zur
Fahrdrahtuntersuchung ist auf dem Wartungsfahrzeug
Das
Schmiermittel
In
Es
ist auch denkbar, dass die Sende-/Empfangseinheit
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610031919 DE102006031919A1 (en) | 2006-07-10 | 2006-07-10 | Acoustic device for investigating overhead wire for electric railway has receives part of ultrasonic pulse reflected from wire and uses lubricant as ultrasonic coupling medium between transmitter/receiver unit and wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610031919 DE102006031919A1 (en) | 2006-07-10 | 2006-07-10 | Acoustic device for investigating overhead wire for electric railway has receives part of ultrasonic pulse reflected from wire and uses lubricant as ultrasonic coupling medium between transmitter/receiver unit and wire |
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Publication Number | Publication Date |
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DE102006031919A1 true DE102006031919A1 (en) | 2007-11-29 |
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DE200610031919 Ceased DE102006031919A1 (en) | 2006-07-10 | 2006-07-10 | Acoustic device for investigating overhead wire for electric railway has receives part of ultrasonic pulse reflected from wire and uses lubricant as ultrasonic coupling medium between transmitter/receiver unit and wire |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010041715A1 (en) | 2010-09-30 | 2012-04-05 | Siemens Aktiengesellschaft | Monitoring device for a catenary of a catenary system |
EP3339082A1 (en) * | 2016-12-23 | 2018-06-27 | Dialogika Gesellschaft Für Angewandte Informatik mbH | System and method for determining the wear of electrical contact lines |
EP3900978A1 (en) | 2020-04-24 | 2021-10-27 | Conductix-Wampfler GmbH | Busbar for a sliding contact line |
WO2021259587A1 (en) | 2020-06-26 | 2021-12-30 | Siemens Mobility GmbH | Method for monitoring the condition of an overhead line system arranged along a road |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2158721A (en) * | 1938-08-04 | 1939-05-16 | Aiken L Rikard | Self-lubricating trolley shoe |
DE3627796C1 (en) * | 1986-08-16 | 1987-10-22 | Klaus Dipl-Ing Nordmann | Device for monitoring the state and breakage of rotating tools by means of measurements of structure-borne sound |
WO2000036169A1 (en) * | 1998-12-16 | 2000-06-22 | Victorian Rail Track | Low resistivity materials with improved wear performance for electrical current transfer and methods for preparing same |
JP2000203315A (en) * | 1999-01-19 | 2000-07-25 | Dengyo:Kk | Trolley line stagger measuring device |
-
2006
- 2006-07-10 DE DE200610031919 patent/DE102006031919A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2158721A (en) * | 1938-08-04 | 1939-05-16 | Aiken L Rikard | Self-lubricating trolley shoe |
DE3627796C1 (en) * | 1986-08-16 | 1987-10-22 | Klaus Dipl-Ing Nordmann | Device for monitoring the state and breakage of rotating tools by means of measurements of structure-borne sound |
WO2000036169A1 (en) * | 1998-12-16 | 2000-06-22 | Victorian Rail Track | Low resistivity materials with improved wear performance for electrical current transfer and methods for preparing same |
JP2000203315A (en) * | 1999-01-19 | 2000-07-25 | Dengyo:Kk | Trolley line stagger measuring device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010041715A1 (en) | 2010-09-30 | 2012-04-05 | Siemens Aktiengesellschaft | Monitoring device for a catenary of a catenary system |
WO2012041977A2 (en) | 2010-09-30 | 2012-04-05 | Siemens Aktiengesellschaft | Monitoring device for a catenary system of an overhead line installation |
EP3339082A1 (en) * | 2016-12-23 | 2018-06-27 | Dialogika Gesellschaft Für Angewandte Informatik mbH | System and method for determining the wear of electrical contact lines |
EP3900978A1 (en) | 2020-04-24 | 2021-10-27 | Conductix-Wampfler GmbH | Busbar for a sliding contact line |
DE102020111272A1 (en) | 2020-04-24 | 2021-10-28 | Conductix-Wampfler Gmbh | Conductor rail for a conductor rail |
WO2021259587A1 (en) | 2020-06-26 | 2021-12-30 | Siemens Mobility GmbH | Method for monitoring the condition of an overhead line system arranged along a road |
DE102020207963A1 (en) | 2020-06-26 | 2021-12-30 | Siemens Mobility GmbH | Method for monitoring the condition of an overhead contact line system arranged along a roadway |
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