WO2018077613A1 - Élément conduit composé de plusieurs tuyaux flexibles coaxiaux - Google Patents

Élément conduit composé de plusieurs tuyaux flexibles coaxiaux Download PDF

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Publication number
WO2018077613A1
WO2018077613A1 PCT/EP2017/075884 EP2017075884W WO2018077613A1 WO 2018077613 A1 WO2018077613 A1 WO 2018077613A1 EP 2017075884 W EP2017075884 W EP 2017075884W WO 2018077613 A1 WO2018077613 A1 WO 2018077613A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
hose
inner tube
bellows
line element
Prior art date
Application number
PCT/EP2017/075884
Other languages
German (de)
English (en)
Inventor
Karsten Schenk
Oliver Selter
Matthias Weiss
Stefan Hauk
Dietmar Baumhoff
Karl-Heinz MÜNKER
Michael Henkelmann
Andreas Gerhard
Akshay Sridhar
Original Assignee
Westfalia Metallschlauchtechnik Gmbh & Co. Kg
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 Westfalia Metallschlauchtechnik Gmbh & Co. Kg filed Critical Westfalia Metallschlauchtechnik Gmbh & Co. Kg
Publication of WO2018077613A1 publication Critical patent/WO2018077613A1/fr

Links

Classifications

    • 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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/1004—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations introduced in exhaust pipes for hot gases
    • 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
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1816—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
    • 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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
    • F16L27/11—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
    • F16L27/111—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations the bellows being reinforced
    • 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
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
    • F16L51/026—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with interior reinforcement
    • 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
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
    • F16L51/027—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with external reinforcement
    • 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
    • F01N2530/02—Corrosion resistive metals
    • F01N2530/04—Steel alloys, e.g. stainless steel

Definitions

  • the invention relates to a conduit element for exhaust gases, which can be used for example in motor vehicles for decoupling vibrations between the engine and subsequent parts of the exhaust system.
  • Line elements which consists of an inner tube and a
  • Outer tube consist, with at least one of the hoses is usually gas-tight.
  • Further prior art can be found in DE 10 2008 001 297 A1, DE 10 201 1 053 131 A1, DE 10 2010 037 162 A1, DE 10 2015 102 258, and DE 10 2012 013946 A1. All of these documents are incorporated by reference in their entirety in this application.
  • the pipe element according to the invention for exhaust pipes is characterized by the following coaxial arrangement of (at least) three hoses: an inner hose; a middle tube surrounding the inner tube; an outer tube surrounding the middle tube.
  • Inner tube, middle tube and outer tube can in principle all have the same structure. They differ essentially by the different diameters, which allow the inner tube in the
  • Inner diameter of the outer tube larger than the outer diameter of the middle tube.
  • Hoses can be a conduit element with improved properties
  • Each of the three hoses can be optimized for a specific function.
  • the outer tube leads to improved thermal insulation of the
  • Line element forms a balanced temperature profile and thereby adjusts a small temperature difference between the exhaust inlet side and the exhaust gas outlet side.
  • the hoses of the line element are preferably
  • Winding hoses especially around metallic winding hoses.
  • Such winding tubes are known in various embodiments (single-layer, multi-layer, agraffförmig, with inner scales and / or outer scales, etc.).
  • two or all three hoses of the line element can be gas-tight.
  • the three tubes preferably the middle tube, is gas-tight.
  • the other hoses may then be in relation to others
  • hoses of the conduit element can be designed as a corrugated bellows, a winding bellows, or a membrane bellows. While corrugated bellows typically perform in conjunction with a stuffer operation
  • Hydroforming are made of a tube, bellows and diaphragm bellows in the profile area welded, rotationally symmetric or helical corrugated elements that are either perpendicular to the axis of rotation
  • a wound bellows structure can preferably be hooked in a form-fitting manner or welded in an overlapping or cohesive manner. Such elements are described for example in DE 10 2008 001 297 A1 or DE 10 201 1 053 131 A1.
  • the middle tube may be formed as a corrugated bellows, a winding bellows, or a membrane bellows, whereby it provides a high flexibility with simultaneous gas-tightness.
  • the outer tube is arranged with a (radial) distance to the middle tube, so that there is an annular gap between the middle tube and outer tube, this condition being fulfilled at least in an axial section of the line element.
  • the resulting air gap improves the thermal insulation to the outside.
  • the distance between the middle tube and outer tube is chosen so large that it does not come to a contact between the two tubes even during operation of the conduit element.
  • Insulation material fabric, glass fiber or the like
  • fabric fabric, glass fiber or the like
  • Middle tube along its axial extent assumes.
  • the wall height corresponds to the height of the hose shafts (radius difference between wave crest and wave trough).
  • the distance between center hose and outer hose is typically about 5 mm.
  • said distance is preferably 0.01 to 2.6 times the wall height of the center tube.
  • Middle hose and outer hose made versions analog.
  • middle hose or outer hose and middle hose
  • middle hose can between inner tube
  • Middle hose (and / or between outer hose and center hose) may be arranged a damping element.
  • This may in particular be a metal knit, for example according to DE 10 2010 037 162 A1.
  • Inner tube and / or the outer tube may have a non-circular cross-section.
  • a tube with a non-circular cross-section in a tube with a round cross-section can be provided via a line contact for a damped vibration behavior. Further details of such embodiments may be the
  • the conduit element is designed such that it at at least one, preferably at both axial ends to a predetermined
  • connection diameter expires, at which the connection to an exhaust system (engine or remaining exhaust pipes) can take place.
  • inner tube, middle tube and / or outer tube have a connection element at at least one of their axial ends, which allows a gas-tight transition to a connection end of the line element.
  • the connecting element may be, for example, a piece of pipe, which includes a transition from the connection radius to the radius of a hose.
  • Figure 1 is an enlarged view of an axial end of a
  • Conduit element with a diaphragm bellows as the middle tube and a distance between the middle tube and the inner tube;
  • FIG. 2 shows the line element of FIG. 1 in an axial section along its entire axial extent
  • FIGS. 3-5 Modifications of the line element of FIGS. 1 and 2
  • Figures 1 and 2 show an axially extending section through a conduit member 100 according to a first embodiment of the present invention.
  • the conduit member 100 is characterized by a coaxial arrangement of three tubes, as follows: a radially innermost inner tube 110 (generally designated by the reference symbol “IS”); a gas-tight middle tube 120 surrounding the inner tube 110 (generally designated by the reference symbol “MS”); an outer tube 130 surrounding the center tube 120 and radially outermost (generally designated by the reference symbol "AS").
  • the outer diameter of the inner tube 1 10 is smaller than that
  • Inner diameter of the center tube 120 so that between the tubes an annular gap of thickness d
  • the inner diameter of the outer tube 130 is larger than the outer diameter of the middle tube 120, so that between the two
  • Middle tube preferably apply the following conditions for the o.g.
  • M / h) are preferably greater than 0, greater than 0.01, greater than 0.05, greater than 0.1, greater than 0.5, or greater than 1, or greater than 1 .5, greater than 2.0 or greater than 2.5. Further, they are preferably smaller than 2.5, smaller than 1 .8, smaller than 1 .3, smaller than 0.9, or smaller than 0.5, or smaller than 0.1 or smaller than 0.05.
  • the line element 100 can be connected to an exhaust system, has at its two axial ends in each case a terminal end E, at which it ends with a predetermined connection radius.
  • the terminal end E is structurally realized in that the outer tube 130 is mounted on a first connection element 131, which rests on its inner side and then merges under step-shaped radius reduction to the connection radius of the connection end.
  • Analog is the
  • Middle tube 120 attached to a second connection element 121, which rests on its inner side and then merges under step-shaped increase in radius on the connection radius of the connection end, wherein it comes to rest within the first connection element 131.
  • the inner tube 1 10 may be coupled in a similar manner to a connection element or be expanded in a manner not shown radially to the connection radius and bear against the second connection element 121 from the inside.
  • Figure 2 shows a section over the entire axial extent of
  • Conduit element 100 of Figure 1 It can be seen that in the annular gap between the inner tube 110 and the middle tube 120 two (or another number) of damping elements 15 are arranged made of metallic knit.
  • FIG. 3 shows a line element 200 in which, in a modification of FIG
  • FIG. 4 shows a line element 300 in which, in a modification of FIG
  • Middle tube 320 touched (ie, the distance d
  • FIG. 5 shows a line element 400 in which, in a modification of FIG
  • the middle tube MS is formed by a bellows 420.

Landscapes

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

Abstract

L'invention concerne un élément conduit (100) pour des tuyaux d'échappement, lequel présente une structure coaxiale composée d'un tuyau flexible intérieur (IS), d'un tuyau flexible central (MS), et d'un tuyau flexible extérieur (AS). Généralement, le tuyau flexible intérieur (IS) et le tuyau flexible extérieur (AS) sont formés par des tuyaux flexibles hélicoïdaux métalliques et le tuyau flexible central (MS) est formé par un soufflet à membrane ou un soufflet ondulé étanche au gaz. De préférence, un écart (dAM) est présent entre le tuyau flexible central (MS) et le tuyau flexible extérieur (AS), de sorte que ces tuyaux flexibles n'entrent pas en contact.
PCT/EP2017/075884 2016-10-25 2017-10-11 Élément conduit composé de plusieurs tuyaux flexibles coaxiaux WO2018077613A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016120372.6 2016-10-25
DE102016120372.6A DE102016120372A1 (de) 2016-10-25 2016-10-25 Leitungselement mit mehreren koaxialen Schläuchen

Publications (1)

Publication Number Publication Date
WO2018077613A1 true WO2018077613A1 (fr) 2018-05-03

Family

ID=60201514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/075884 WO2018077613A1 (fr) 2016-10-25 2017-10-11 Élément conduit composé de plusieurs tuyaux flexibles coaxiaux

Country Status (2)

Country Link
DE (1) DE102016120372A1 (fr)
WO (1) WO2018077613A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018004146U1 (de) 2018-08-02 2018-10-19 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Leitungselement mit Innenschlauch hoher Steifigkeit
DE102021106244A1 (de) 2021-03-15 2022-09-15 Westfalia Metal Hoses Gmbh Leitungselement mit Drahtgestricke
DE102021106230A1 (de) 2021-03-15 2022-09-15 Westfalia Metal Hoses Gmbh Leitungselement mit Drahtgestricke zwischen Innenschlauch und Außenschlauch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018103218U1 (de) 2018-06-08 2018-06-20 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Medienleitung für eine Anlage zur Energieumwandlung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856648A1 (fr) * 1997-01-31 1998-08-05 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Elément de conduite flexible pour conduites de gaz d'échappement
DE102008001297A1 (de) 2007-04-27 2008-10-30 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Wendelgewellter Membranbalg sowie Verfahren zu seiner Herstellung
DE102007043944A1 (de) * 2007-09-14 2009-03-19 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Flexibles Leitungselement mit kombinierter Wärmeisolation und Schwingungsdämpfung
DE102010037162A1 (de) 2009-08-31 2011-03-03 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Dämpfungselement für Entkopplungselemente, insbesondere für Membranbälge
DE102011053131A1 (de) 2010-11-23 2012-05-24 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Membranbalg aus profilierten Metallstreifen
DE102011110147A1 (de) * 2011-08-15 2013-02-21 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Spezielle Dämpfungsstreifen für flexible Leitungselemente
DE102012013946A1 (de) 2012-07-16 2014-01-16 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Flexibles Leitungselement mit Dämpfung
DE202015104177U1 (de) 2015-07-30 2015-12-03 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Anordnung eines Leitungselements bestehend aus einem Innen- und Außenelement
DE102015102258A1 (de) 2015-02-17 2016-08-18 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Leitungselement mit Dämpfung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856648A1 (fr) * 1997-01-31 1998-08-05 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Elément de conduite flexible pour conduites de gaz d'échappement
DE102008001297A1 (de) 2007-04-27 2008-10-30 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Wendelgewellter Membranbalg sowie Verfahren zu seiner Herstellung
DE102007043944A1 (de) * 2007-09-14 2009-03-19 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Flexibles Leitungselement mit kombinierter Wärmeisolation und Schwingungsdämpfung
DE102010037162A1 (de) 2009-08-31 2011-03-03 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Dämpfungselement für Entkopplungselemente, insbesondere für Membranbälge
DE102011053131A1 (de) 2010-11-23 2012-05-24 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Membranbalg aus profilierten Metallstreifen
DE102011110147A1 (de) * 2011-08-15 2013-02-21 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Spezielle Dämpfungsstreifen für flexible Leitungselemente
DE102012013946A1 (de) 2012-07-16 2014-01-16 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Flexibles Leitungselement mit Dämpfung
DE102015102258A1 (de) 2015-02-17 2016-08-18 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Leitungselement mit Dämpfung
DE202015104177U1 (de) 2015-07-30 2015-12-03 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Anordnung eines Leitungselements bestehend aus einem Innen- und Außenelement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018004146U1 (de) 2018-08-02 2018-10-19 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Leitungselement mit Innenschlauch hoher Steifigkeit
DE102021106244A1 (de) 2021-03-15 2022-09-15 Westfalia Metal Hoses Gmbh Leitungselement mit Drahtgestricke
DE102021106230A1 (de) 2021-03-15 2022-09-15 Westfalia Metal Hoses Gmbh Leitungselement mit Drahtgestricke zwischen Innenschlauch und Außenschlauch

Also Published As

Publication number Publication date
DE102016120372A1 (de) 2018-04-26

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