DE19637819C1 - Checking internal esp. vehicle pipe walls for corrosion or adhering particles, e.g. rust particles - Google Patents

Checking internal esp. vehicle pipe walls for corrosion or adhering particles, e.g. rust particles

Info

Publication number
DE19637819C1
DE19637819C1 DE1996137819 DE19637819A DE19637819C1 DE 19637819 C1 DE19637819 C1 DE 19637819C1 DE 1996137819 DE1996137819 DE 1996137819 DE 19637819 A DE19637819 A DE 19637819A DE 19637819 C1 DE19637819 C1 DE 19637819C1
Authority
DE
Germany
Prior art keywords
particles
pipe
corrosion
esp
pipe walls
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.)
Expired - Fee Related
Application number
DE1996137819
Other languages
German (de)
Inventor
Theodor Schreyer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE1996137819 priority Critical patent/DE19637819C1/en
Application granted granted Critical
Publication of DE19637819C1 publication Critical patent/DE19637819C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01N29/04—Analysing solids
    • G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • 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
    • G01N2291/263—Surfaces
    • G01N2291/2634—Surfaces cylindrical from outside

Abstract

The pipe checking involves feeding a sphere into the pipe and recording the noise and vibrations caused by moving the sphere along the pipe with the pipe in an inclined position. The sphere can be made of steel. The dia. of the sphere is about 0.5 mm. smaller than that of the pipe being checked.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Überprüfen der Innenwandung eines Rohrs.The invention relates to a method for checking the inner wall of a pipe.

Die in einen Personenkraftwagen einzubauenden Rohrleitungen, wie Kraftstoff- oder Bremsleitungen werden vor ihrer Montage auf an ihrer Innenwandung anhaf­ tende Rostpartikel oder dergleichen überprüft. Dabei ist eine bloße Sichtprüfung der Innenwandung wegen des kleinen Rohrinnendurchmessers nicht ausreichend. Eine Überprüfung der Innenwandung durch ein Endoskop ist dagegen sehr zeit­ aufwendig und damit teuer.The pipelines to be installed in a passenger car, such as fuel or brake lines are attached to their inner wall before they are installed rust particles or the like checked. There is a mere visual inspection the inner wall is not sufficient due to the small pipe diameter. On the other hand, it is very time to check the inner wall using an endoscope complex and therefore expensive.

Ferner geht aus der DE 36 38 936 A1 ein Verfahren zum Detektieren von Korro­ sion oder dergleichen in Rohrleitungen mittels Ultraschall oder eines Wirbelstrom­ feldes hervor. Dabei besteht das Verfahren im wesentlichen darin, daß während des Laufs eines Molches einzelne Messungen taktweise durchgeführt und die Meßergebnisse als Meßdaten digitalisiert werden. Schließlich werden die Meßer­ gebnisse mit einer Wegstreckeninformation versehen, daraufhin zwischengespei­ chert und blockweise endgespeichert. Dabei besteht die Einrichtung zur Detektion von Korrosion, Lochfraß oder dergleichen in Rohrleitungen aus mindestens einer Meßeinheit, einer Verarbeitungseinheit und einer Aufzeichnungseinheit. Das be­ kannte Verfahren ist somit verhältnismäßig kompliziert und nur mit sehr teueren Einrichtungen durchzuführen.DE 36 38 936 A1 also describes a method for detecting corrosion sion or the like in pipelines using ultrasound or an eddy current field. The process consists essentially in that during during the course of a pig, individual measurements are carried out in cycles and the Measurement results are digitized as measurement data. Finally, the knives Provide results with route information, then cached saved and saved in blocks. There is the facility for detection of corrosion, pitting or the like in pipelines from at least one Measuring unit, a processing unit and a recording unit. That be Known procedure is therefore relatively complicated and only with very expensive Facilities.

Aufgabe der Erfindung ist es daher, ein Verfahren zu schaffen, durch das eine Rohrinnenwandung in einfacher und kostengünstiger Weise überprüft werden kann.The object of the invention is therefore to provide a method by which Inner tube wall can be checked in a simple and inexpensive manner can.

Zur Lösung der Aufgabe sind die im Patentanspruch 1 dargelegten Merkmale vor­ gesehen.To achieve the object, the features set out in claim 1 are provided seen.

Eine in das zu prüfende Rohr eingeführte und längs diesem verlagerte Stahlkugel beaufschlagt ein gegebenenfalls an der Rohrinnenwandung vorhandenes Rostpar­ tikel oder dergleichen Erhebung und prallt dadurch gegen die gegenüberliegende Rohrinnenwandung. Durch das hierdurch entstehende Geräusch wird die prüfende Person auf das Rostpartikel aufmerksam. Darüber hinaus können hierbei auch an der Rohrleitung spürbare Vibrationsschwingungen entstehen.A steel ball inserted into the pipe to be tested and moved along it acts on a Rostpar that may be present on the inner wall of the pipe particles or similar elevation and thereby collides with the opposite Inner tube wall. The resulting noise makes the test Attention person to the rust particle. In addition, you can also click here noticeable vibration vibrations occur in the pipeline.

Damit die Stahlkugel in einfacher Weise in der Rohrleitung verlagert werden kann, wird diese in einem Winkel von etwa 45° angeordnet. Schließlich ist der Durch­ messer der Stahlkugel etwa 0,5 mm kleiner als der Rohrinnendurchmesser (Merkmale der Patentansprüche 2 bis 4).So that the steel ball can be easily moved in the pipeline, it is arranged at an angle of approximately 45 °. After all, the through is The diameter of the steel ball is about 0.5 mm smaller than the inside diameter of the pipe (Features of claims 2 to 4).

Claims (4)

1. Verfahren zum Überprüfen der Innenwandung eines Rohrs auf Korrosion oder auf dergleichen an ihr anhaftende Partikel, insbesondere eines Rohrs für ein Kraftfahrzeug, bei dem in das Rohr eine Kugel eingeführt und über seine Längserstreckung verlagert wird und die bei der Verlagerung entstehenden Geräusche und Vibrationsschwingungen registriert werden.1. Procedure for checking the inside wall of a pipe for corrosion or on the like particles adhering to it, in particular a tube for a motor vehicle in which a ball is inserted into the tube and over its Longitudinal extension is shifted and the resulting during the shift Noises and vibrations are registered. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Kugel durch Schräglage des Rohrs längsverlagert wird.2. The method according to claim 1, characterized in that the ball through Oblique position of the pipe is shifted lengthways. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Kugel aus Stahl besteht.3. The method according to claim 1 and 2, characterized in that the ball is made of steel. 4. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Durch­ messer der Kugel etwa 0,5 mm kleiner ist als der Rohrinnendurchmesser.4. The method according to claim 1 and 2, characterized in that the through diameter of the ball is about 0.5 mm smaller than the inside diameter of the pipe.
DE1996137819 1996-09-17 1996-09-17 Checking internal esp. vehicle pipe walls for corrosion or adhering particles, e.g. rust particles Expired - Fee Related DE19637819C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996137819 DE19637819C1 (en) 1996-09-17 1996-09-17 Checking internal esp. vehicle pipe walls for corrosion or adhering particles, e.g. rust particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996137819 DE19637819C1 (en) 1996-09-17 1996-09-17 Checking internal esp. vehicle pipe walls for corrosion or adhering particles, e.g. rust particles

Publications (1)

Publication Number Publication Date
DE19637819C1 true DE19637819C1 (en) 1997-11-27

Family

ID=7805858

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996137819 Expired - Fee Related DE19637819C1 (en) 1996-09-17 1996-09-17 Checking internal esp. vehicle pipe walls for corrosion or adhering particles, e.g. rust particles

Country Status (1)

Country Link
DE (1) DE19637819C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29720837U1 (en) * 1997-11-24 1998-01-22 Vaw Mandl & Berger Gmbh Blocking device for casting channels
EP1780540A1 (en) * 2004-07-26 2007-05-02 Sekisui Chemical Co., Ltd. Buried pipe examining method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3638936A1 (en) * 1986-11-14 1988-05-26 Kernforschungsz Karlsruhe METHOD AND DEVICE FOR DETECTING CORROSION OR THE LIKE
DE4219988A1 (en) * 1991-06-18 1992-12-24 Tsubakimoto Precision Prod Machine for deburring, grinding and lapping steel balls - has return chute to hopper shaped to ensure that recirculated balls fall into hopper bowl at varying radii

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3638936A1 (en) * 1986-11-14 1988-05-26 Kernforschungsz Karlsruhe METHOD AND DEVICE FOR DETECTING CORROSION OR THE LIKE
DE4219988A1 (en) * 1991-06-18 1992-12-24 Tsubakimoto Precision Prod Machine for deburring, grinding and lapping steel balls - has return chute to hopper shaped to ensure that recirculated balls fall into hopper bowl at varying radii

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29720837U1 (en) * 1997-11-24 1998-01-22 Vaw Mandl & Berger Gmbh Blocking device for casting channels
EP1780540A1 (en) * 2004-07-26 2007-05-02 Sekisui Chemical Co., Ltd. Buried pipe examining method
EP1780540A4 (en) * 2004-07-26 2013-10-30 Sekisui Chemical Co Ltd Buried pipe examining method

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee