DE2915838A1 - Double-wall exhaust pipe - has one pipe wall longitudinally ribbed providing axial grooves between them, with pipes tightly fitting together - Google Patents

Double-wall exhaust pipe - has one pipe wall longitudinally ribbed providing axial grooves between them, with pipes tightly fitting together

Info

Publication number
DE2915838A1
DE2915838A1 DE19792915838 DE2915838A DE2915838A1 DE 2915838 A1 DE2915838 A1 DE 2915838A1 DE 19792915838 DE19792915838 DE 19792915838 DE 2915838 A DE2915838 A DE 2915838A DE 2915838 A1 DE2915838 A1 DE 2915838A1
Authority
DE
Germany
Prior art keywords
pipe
double
wall
tube
pipes
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Withdrawn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
DE19792915838
Other languages
German (de)
Inventor
Erich Schellhoff
Johann Wassen
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Priority to DE19792915838 priority Critical patent/DE2915838A1/en
Publication of DE2915838A1 publication Critical patent/DE2915838A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/12—Tubes being corrugated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/26—Multi-layered walls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)

Abstract

The double-wall exhaust pipe, or the like, comprises a longitudinally ribbed pipe (3) and a smooth-wall pipe (2) arranged one inside the other, so as to provide axially extending grooves between them. The inner pipe may be a tight fit inside the outer pipe. The ribbed pipe may have an internally and/or externally ribbed contour. The contact areas between the pipes may be so arranged that the wall does not collapse on bending. The ribbed pipe may be longitudinally seam-welded. The ribbed or smooth inner pipe may be longitudinally slotted.

Description

Die Erfindung betrifft ein Doppelwandrohr für AuspuffThe invention relates to a double wall pipe for exhaust

rohre oder dergleichen.pipes or the like.

Es ist bekannt, Rohre, die für Auspuffanlagen oder dergleichen bestimmt sind, mit einer isolierenden Zwischenschicht zu versehen (GM 66 07 166).It is known pipes intended for exhaust systems or the like are to be provided with an insulating intermediate layer (GM 66 07 166).

Bekannt ist auch, auf die Innenfläche von Rohren feinmaschige Metallnetze aufzubringen (DE-OS 17 52 999 unrl DE-PS 25 25 045).It is also known to use fine-meshed metal nets on the inner surface of pipes to apply (DE-OS 17 52 999 and DE-PS 25 25 045).

Schließlich ist es bekannt, Draht bündelförmig zwischen Innen- und Außenrohr anzubringen (DE-OS 23 27 926).Finally, it is known to bundle wire between the inner and outer wire To attach the outer tube (DE-OS 23 27 926).

Bei der Verwendung dieser bekannten Rohre als Auspuffrohre ist nachteilig, daß das Außenrohr beim notwendigen Biegen des Gesamtrohres einfällt und der erforderliche Abstand zum Innenrohr nicht mehr vorhanden ist.When using these known pipes as exhaust pipes is disadvantageous that the outer tube collapses when the entire tube is bent and the required Distance to the inner tube no longer exists.

Des weiteren werden diese Zwischenlagen oft derart verformt oder sogar zerstört, daß ein Einsatz als Auspuffrohr nicht mehr möglich ist.Furthermore, these intermediate layers are often deformed or even deformed in this way destroyed so that it can no longer be used as an exhaust pipe.

Aufgabe der Erfindung ist es, ein Doppelwandrohr für Auspuffrohre oder dergleichen zu schaffen, welches auch bei daraus gefertigten gebogenen Rohrelementen einen freien Durchgang für das Kühlmedium aufweist.The object of the invention is to provide a double-walled pipe for exhaust pipes or the like to create, which also with bent tubular elements made therefrom has a free passage for the cooling medium.

Zur Lösung dieser Aufgabe wird erfindungsgemäß ein Doppelwandrohr vorgeschlagen, wie es in dem Hauptanspruch beschrieben ist.According to the invention, a double-walled pipe is used to achieve this object proposed as described in the main claim.

Ausgestaltungen ergeben sich aus den Unteransprüchen.Refinements result from the subclaims.

Der besondere Vorteil des erfindungsgemäßen Doppelwandrohres liegt bereits in dem Fertigungsverfahren, bei dem entweder das Innen- oder das Außenrohr aus mit längsverlaufenden Profilen versehenem Band längsnahtgeschweißt wird. In oder auf dieses mit Innen-oder Außenprofilen versehene Rohr wird ein Glattwandrohr ein- oder übergeschoben. Beide Rohre werden dann in bekannter Weise, z.B. durch Ziehen oder Walzen miteinander verbunden, und zwar derart, daß eine Haftung zwischen den Rohren entsteht, die ein Zusammenhalten garantiert, ein zu starkes Verformen der Profilspitzen Jedoch vermeidet.The particular advantage of the double-walled pipe according to the invention lies already in the manufacturing process, in which either the inner or the outer tube is longitudinally welded from tape provided with longitudinal profiles. In or a smooth-walled pipe is placed on this pipe, which is provided with internal or external profiles pushed in or pushed over. Both pipes are then in a known manner, e.g. by Pulling or rolling connected to one another in such a way that there is an adhesion between the pipes, which guarantee that they hold together, are too deformed of the profile peaks, however, avoids.

Profile jeder Art ein- oder auch beidseitig sind durch Einwalzen relativ einfach in das Band einzubringen.Profiles of any kind on one or both sides are relative due to rolling easy to bring into the tape.

In den beigefügten Zeichnungen sind mögliche Lösungsvorschläge schematisch dargestellt.Possible solutions are shown schematically in the attached drawings shown.

Es zeigen: Figur 1 ein profiliertes Ausgangsband Figur 2 ein Doppelrohr mit innerem Profilrohr Figur 3 Doppelrohrausschnitte mit glattem Innenrohr Figur 4 Doppelrohrausschnitte mit glattem Außenrohr Figur 5 einen Doppelrohrausschnitt mit beidseitig profiliertem Außenrohr Figur 6 einen Doppelrohrausschnitt mit beidseitig profiliertem Innenrohr Figur 7 und 8 Doppelrohrausschnitte mit einseitiger bzw. doppelseitiger unterschiedlicher Profilierung Wie aus den Zeichnungen hervorgeht, ist das Ausgangsmaterial für das profilierte Rohr ein Band 1, in das die gewünschten Profile vor dem Biegen und Schweißen eingewalzt werden.The figures show: FIG. 1 a profiled starting strip, FIG. 2 a double tube with inner profile tube Figure 3 double tube cutouts with smooth inner tube Figure 4 double pipe cutouts with smooth outer pipe; Figure 5 shows a double pipe cutout with an outer tube profiled on both sides, FIG. 6 a double tube cutout with both sides profiled inner pipe Figure 7 and 8 double pipe cutouts with one-sided or double-sided different profiling As from the drawings As can be seen, the starting material for the profiled tube is a strip 1 in which the desired profiles are rolled in before bending and welding.

Figur 2 zeigt das Doppelrohr mit glattem Außenrohr 2 und profiliertem Innenrohr 3.FIG. 2 shows the double tube with a smooth outer tube 2 and a profiled one Inner tube 3.

In den Figuren 3 sind Lösungsvorschläge mit glattem Innenrohr 4 und profiliertem Außenrohr 5 und in Figur 4 mit glattem Außenrohr 2 und profiliertem Innenrohr 3 dargestellt.In the figures 3 are proposed solutions with smooth inner tube 4 and profiled outer tube 5 and in Figure 4 with smooth outer tube 2 and profiled Inner tube 3 shown.

Die Figuren 5 und 6 zeigen Lösungsvorschläge mit beidseitigen gleichmäßigen Profilierungen 6 und 7 bzw.Figures 5 and 6 show proposed solutions with bilateral uniform Profiles 6 and 7 or

Figur 7 unterschiedliche beidseitige und in Figur 8 unterschiedliche einseitige Profilierungen, wobei eine der Profilierungen geschlossene oder nahezu geschlossene Hohlräume 9 bilden.Figure 7 different bilateral and in Figure 8 different one-sided profiles, with one of the profiles closed or almost form closed cavities 9.

Die Art der Profilierung ist je nach Verwendung des Doppelrohres wählbar.The type of profile can be selected depending on the use of the double pipe.

Es ist auch denkbar, das profilierte oder das glatte Innenrohr als Schlitzrohr einzusetzen.It is also conceivable that the profiled or the smooth inner tube as Insert slotted tube.

Claims (6)

"Doppelwandrohr für Auspuffrohre oder dergleichen" Patentansprüche 1. Doppelwandrohr für Auspuffrohre oder @@@@@@ -i.#rg#l d a d u r c h gee k e n n z e i c h n e t, daß es aus einem mit Längsprofilen versehenen und einem glatten Rohr besteht, wobei das profilierte Rohr das Innen- oder Außenrohr bildet. "Double wall pipe for exhaust pipes or the like" claims 1. Double wall pipe for exhaust pipes or @@@@@@ -i. # Rg # l d a d u r c h gee k e n It does not indicate that it consists of one with longitudinal profiles and one that is smooth Tube consists, the profiled tube forming the inner or outer tube. 2. Doppelwandrohr gemäß Anspruch 1, d a d u r c h g ek e n n z e i c h n e t , daß die Rohre durch Haftsitz miteinander verbunden sind.2. Double wall pipe according to claim 1, d a d u r c h g ek e n n z e i c h n e t that the pipes are connected to one another by an adhesive fit. Doppelwandrohr nach den Ansprüchen 1 und 2, d a cl u r c h g e k e n n z e i c h n e t , daß die Profilrohre ein-oder beidseitig mit über den Umfang unterschiedlichen Profilen (9) und (10) versehen sind.Double wall pipe according to claims 1 and 2, d a cl u r c h g e k e n n z e i h n e t that the profile tubes on one or both sides with over the circumference different profiles (9) and (10) are provided. 4. Doppelwandrohr nach den Ansprüchen 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , daß die Haftflächen über den Umfang so verteilt sind, daß kein Einfallen der Rohrwand beim Biegen auftritt.4. Double wall pipe according to claims 1 to 3, d a d u r c h G it is not indicated that the adhesive surfaces are distributed over the circumference in such a way that that no collapse of the pipe wall occurs during bending. 5. Doppelwandrohr nach den Ansprüchen 1 bis 4, d a d n r c h g e k e n n z e i c h n e t , daß das profilierte Rohr lä.ngsnahtgeschweißt ist.5. Double-wall pipe according to claims 1 to 4, d a d n r c h g e k It is noted that the profiled pipe is longitudinally welded. 6. Doppelwandrohr nach den Ansprüchen 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , daß das profilierte oder glatte Innenrohr aus einem Schlitzrohr (11) besteht.6. Double-wall pipe according to claims 1 to 5, d a d u r c h g e k It is noted that the profiled or smooth inner tube is made from a slotted tube (11) exists.
DE19792915838 1979-04-17 1979-04-17 Double-wall exhaust pipe - has one pipe wall longitudinally ribbed providing axial grooves between them, with pipes tightly fitting together Withdrawn DE2915838A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792915838 DE2915838A1 (en) 1979-04-17 1979-04-17 Double-wall exhaust pipe - has one pipe wall longitudinally ribbed providing axial grooves between them, with pipes tightly fitting together

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792915838 DE2915838A1 (en) 1979-04-17 1979-04-17 Double-wall exhaust pipe - has one pipe wall longitudinally ribbed providing axial grooves between them, with pipes tightly fitting together

Publications (1)

Publication Number Publication Date
DE2915838A1 true DE2915838A1 (en) 1980-10-23

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2524967A1 (en) * 1982-04-08 1983-10-14 Westinghouse Electric Corp PERFECTLY DESIGNED DOUBLE WALL TUBES FOR STEAM GENERATORS
US4694864A (en) * 1984-05-04 1987-09-22 Novatome Double-wall tube for a heat exchanger
US4817672A (en) * 1985-02-12 1989-04-04 Jogema Holding B.V. Composite tube for heating gases
US5495873A (en) * 1993-10-13 1996-03-05 Benteler Industries, Inc. Patterned air gap engine exhaust conduit
US5497809A (en) * 1994-01-05 1996-03-12 Wolf; Lawrence W. Vented bending sleeves for coaxial tubing systems
GB2367601A (en) * 2000-08-15 2002-04-10 Lattice Intellectual Property Method for lining a pipe or main
DE102004053916A1 (en) * 2004-11-05 2006-05-18 Benteler Automobiltechnik Gmbh Exhaust pipe and method for producing an exhaust pipe
CN103968160A (en) * 2013-02-01 2014-08-06 韩一Tube株式会社 Unheated fuel-line assembly and method of detecting leakage at and/or in a fuel line
DE102017011639A1 (en) * 2017-12-15 2019-06-19 Stiebel Eltron Gmbh & Co. Kg Method for producing a safety tube
US11378214B2 (en) 2020-06-26 2022-07-05 Lawrence Wolf Coaxial tubing systems with securable spacers

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2524967A1 (en) * 1982-04-08 1983-10-14 Westinghouse Electric Corp PERFECTLY DESIGNED DOUBLE WALL TUBES FOR STEAM GENERATORS
US4694864A (en) * 1984-05-04 1987-09-22 Novatome Double-wall tube for a heat exchanger
US4817672A (en) * 1985-02-12 1989-04-04 Jogema Holding B.V. Composite tube for heating gases
US5495873A (en) * 1993-10-13 1996-03-05 Benteler Industries, Inc. Patterned air gap engine exhaust conduit
US5497809A (en) * 1994-01-05 1996-03-12 Wolf; Lawrence W. Vented bending sleeves for coaxial tubing systems
GB2367601A (en) * 2000-08-15 2002-04-10 Lattice Intellectual Property Method for lining a pipe or main
DE102004053916A1 (en) * 2004-11-05 2006-05-18 Benteler Automobiltechnik Gmbh Exhaust pipe and method for producing an exhaust pipe
US7581563B2 (en) 2004-11-05 2009-09-01 Benteler Automobiltechnik Gmbh Exhaust pipe with profiled inner tube, and method of making an exhaust pipe
DE102004053916B4 (en) * 2004-11-05 2012-03-08 Benteler Automobiltechnik Gmbh Exhaust pipe and method for producing an exhaust pipe
CN103968160A (en) * 2013-02-01 2014-08-06 韩一Tube株式会社 Unheated fuel-line assembly and method of detecting leakage at and/or in a fuel line
DE102017011639A1 (en) * 2017-12-15 2019-06-19 Stiebel Eltron Gmbh & Co. Kg Method for producing a safety tube
US11378214B2 (en) 2020-06-26 2022-07-05 Lawrence Wolf Coaxial tubing systems with securable spacers

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