EP1680615A1 - Raccordement de tuyaux - Google Patents

Raccordement de tuyaux

Info

Publication number
EP1680615A1
EP1680615A1 EP04790905A EP04790905A EP1680615A1 EP 1680615 A1 EP1680615 A1 EP 1680615A1 EP 04790905 A EP04790905 A EP 04790905A EP 04790905 A EP04790905 A EP 04790905A EP 1680615 A1 EP1680615 A1 EP 1680615A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
sealing ring
pipe connection
connection according
line part
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Withdrawn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
EP04790905A
Other languages
German (de)
English (en)
Inventor
Rolf Fadini
Sandra Gnann
Friedrich Gugel
Martin RÖHM
Hans-Jürgen STRASSNER
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.)
PETER HUFNAGEL GmbH
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
PETER HUFNAGEL GmbH
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 DaimlerChrysler AG, PETER HUFNAGEL GmbH filed Critical DaimlerChrysler AG
Publication of EP1680615A1 publication Critical patent/EP1680615A1/fr
Withdrawn legal-status Critical Current

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
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
    • 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
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means

Definitions

  • the invention relates to a pipe connection for connecting two pipe parts, in particular for an exhaust system of an internal combustion engine, having the features of the preamble of claim 1.
  • U.S. Patent No. 1,959,630 discloses an apparatus for connecting two tubing members having a sleeve and a sealing ring wrapped around the sleeve.
  • the sleeve is partially inserted into one of the pipe parts and the other part of the pipe plugged onto the free sleeve part.
  • a clamp which is placed and tightened around the flared ends of the pipe parts, the pipe parts are pressed axially with their flared ends towards each other and against the sealing ring, so that a solid pipe connection is formed.
  • the pipe connection according to the invention has a sealing element with a sleeve and a sealing ring and is characterized in that the sleeve has a radial widening at its first end and can be inserted into the first conduit part such that the widening engages behind a peripheral constriction of the first conduit part.
  • the sealing element is axially fixed in the pipe part after insertion ⁇ ben. This has the advantage that it can not slide out of the pipe part during assembly, in particular in the case of an approximately perpendicular pipe.
  • the radial expansion of the sleeve is formed tooth-like abkragend.
  • the widening in the circumferential direction is limited by notches and comparatively narrow. This reduces when inserting the sealing element required to overcome the missionseinschnürung force. It is advantageous to provide a few, distributed symmetrically along the circumferential end of the sleeve Abkragungen, thereby tilting during assembly is avoided.
  • the sleeve has a conical taper at its second end. As a result, the attachment of the second line part is facilitated.
  • the sealing ring encloses the sleeve annular and is positively connected to the sleeve.
  • the sealing ring is therefore fixed in position at an intended location of the sleeve all around and can not be removed from the sleeve during insertion of the sealing element slide. It is advantageous if the sealing ring encloses the sleeve frictionally.
  • the sealing ring can be permanently connected to the sleeve, resulting in a one-piece sealing element.
  • the sealing ring in cross-section frustoconical shape with a straight approach wherein the radially outer region has a smaller width than the radially inner region. Due to the partially frusto-conical cross-section oblique flanks arise at which can be pressed form-fitting at expanded ends of the line parts to be joined. As a result, a high tightness is achieved, which is particularly important for connecting the exhaust pipe parts. Due to the broadened straight approach, with which the sealing ring with the sleeve is in communication, results in a mechanically stable and robust sealing element.
  • the sealing ring is constructed of a graphite filled wire mesh.
  • the first line part and the second line part each have a funnel-shaped widening at their connection-side end.
  • the expansion angle of the conduit parts at least approximately corresponds to the flank angle of the sealing ring, so that when merging the pipe parts these rest with their widening on the flanks.
  • the fastening means is designed as an open clamp at at least one point with cross-sectionally inclined flanks and a radially projecting closure part.
  • the flanks of the clamp engage behind the widenings of the pipe parts.
  • the flank angle of the clamp here corresponds approximately to the AufWeitungen the line parts.
  • a screw connection for the closure part of the clamp is provided, with which it can be tightened and thereby the line parts are pressed against each other and against the sealing ring, so that a solid pipe connection is formed.
  • Fig. 2 is a schematic fragmentary cross-sectional view of a preferred embodiment of the pipe joint associated sealing element
  • Fig. 3 shows a preferred embodiment of the pipe connection according to the invention in a schematic perspective view.
  • a preferred embodiment of the pipe connection according to the invention in the assembled state is shown schematically in cross section.
  • the first conduit part 1 has a provisionsseinschnürung 11, which merges into a funnel-shaped expansion 12.
  • the pipe connection is such that a gas-tight connection of the pipe parts 1, 2 is achieved. It is assumed that a preferred gas flow direction according to the arrow 14.
  • the sealing element 4 comprises a sleeve 5 with an approximately centrally disposed, circumferential sealing ring 6.
  • the sleeve 5 has at a first end 7 to a radial expansion 8.
  • the illustration of FIG. 1 is based on a cross-sectional profile through two diametrically opposed widenings.
  • the sleeve 5 also has at its second end 9 a conically tapering portion 10.
  • the sealing ring ⁇ is formed so that in cross-section a radially outwardly tapering truncated cone results with a straight lug, with which the sealing ring 6 rests on the outside of the sleeve 5 on the outside.
  • the sealing element 4 is inserted into the first conduit part 1.
  • the widening 8 of the sleeve 5 strikes the peripheral constriction 11 of the conduit part 1
  • the widened peripheral region 8 is pressed inwards and, upon further insertion of the sleeve 5, springs back into its starting position and engages behind the peripheral constriction 11.
  • the truncated cone of the sealing ring 6 comes into contact with the flared end 12 of the conduit part. This facilitates assembly, in particular in the case of a geodetically downward course of the line part 1.
  • the sleeve 5 between the end regions 7, 9 to provide an outer diameter which is only slightly smaller than the inner diameter of the conduit part 1 in the region of the peripheral constriction 11, so that the sleeve rests there.
  • the devissseinschnürung 11 is preferably such that at this point results in a reduction of the inner diameter of the conduit parts 1, 2 by about 1% to 4%.
  • the second conduit part 2 is attached to the conically tapered end 9 of the sleeve until the funnel-shaped flared end 13 rests against the flank of the sealing ring 6.
  • the conical taper 10 of the sleeve proves to be advantageous in two respects.
  • an oblique attachment of the second line part 2 is made possible to a certain extent, which is useful, for example, in hard-to-reach exhaust pipes.
  • the conically tapered end portion of the sleeve 5 extends axially in the flow direction to behind the inventorsseinschnürung of the second conduit part second
  • a solid and preferably gas-tight connection of the conduit parts 1, 2 is achieved by means of the clamp 3 with an approximately U-shaped cross-section.
  • the clamp 3 is placed around the flared ends 12, 13 of the conduit parts 1, 2, so that the flanks of the clamp overlap the latter. It is advantageous if the flank angle of the clamp 3 and the sealing ring 6 about the flank angle of the flared ends 12, 13 of the conduit parts 1, 2 correspond. Preference is given to an angling of the ends 12, 13 by about 70 ° with respect to the line axis.
  • the clamp 3 can be designed in a conventional design with at least one open point.
  • a clamp with two semicircular halves which are movably connected at one end and closed at the other end with a screw and tightened.
  • the clamp can slide in the direction of the circumferential constrictions of the pipe parts 1, 2, whereby the sealing ring 6 is pressed sealingly against the flared ends 12, 13 of the pipe parts 1, 2.
  • a sliding axial deformation of the sealing ring 6 is made possible by the fact that this has a radially inner portion of rectangular cross-section.
  • the sealing ring ⁇ is fixed in position on the sleeve 5 is arranged.
  • This can, for example, by a circumferential annular bead of Sleeve 5 can be achieved in cooperation with a corresponding circumferential groove on the bearing surface of the sealing ring 6. It is preferable to connect the sealing ring 6 positively and optionally non-positively with the sleeve, whereby a captive is guaranteed.
  • the sealing ring 6 has a corresponding temperature resistance and deformability. It is therefore intended to construct the sealing ring 6 of a temperature-resistant sealing material.
  • a temperature-resistant sealing material such as Kevlar, aluminum or copper
  • the sealing ring is composed of an at least partially, but preferably of a predominantly filled with graphite wire mesh.
  • the use of graphite or a predominantly graphite-containing sealing material results in good sliding properties, which prevents seizure of the sealing ring.
  • Graphite also has good thermal and chemical resistance.
  • the knitted wire ensures sufficient deformability and flexibility as well as mechanical cohesion of the graphite.
  • the knitted wire further prevents radial flow away of the sealing material and thus a loosening of the pipe connection.
  • the fixed, preferably non-detachable connection of the sealing ring 6 to the metallic sleeve 5 is made possible by the use of the wire mesh, whereby a one-piece sealing element 4 is formed.
  • the radial strength of the sealing ring 6 it is advantageous if, together with the sleeve 5, the total outside diameter of the sealing element 4 reached reaches the largest diameter of the widened end 12, 13 of the conduit section. le 1, 2 does not exceed, so that a radial projection is avoided. Particularly preferred is a slightly smaller largest diameter of the sealing element 4, as shown in Fig. 1. With regard to the width of the sealing ring 6, it is advantageous if this is so dimensioned that there is an axial distance of the pipe parts, which is about 5% to 50% of the pipe diameter.
  • the radial expansion 8 of the sleeve 5 is performed at an angle of ⁇ with respect to the axial course of the sleeve 5.
  • a range of 15 ° to 35 ° is preferred.
  • the radial expansion 8 is performed at an angle of ⁇ of about 25 ° and extends in the axial direction in a length of about 0.5% to 10%, preferably about 5% based on the length of the sleeve 5.
  • the conical taper 10 of the sleeve diameter at the second end 9 of the sleeve 5 is preferably carried out with a cone angle ß of about 5 ° to 25 °. Particularly preferred is a cone angle ß of about 15 °. With regard to a connection of exhaust pipes of a motor vehicle and the usual dimensions there, the conical taper 10 preferably extends about 1% 30%, more preferably about 15% based on the length of the sleeve 5 in the axial direction.
  • Fig. 3 shows a schematic perspective view of the assembled pipe joint of FIG. 1, wherein like components are provided with the same reference numerals. 3, only a short part of the line part 1 is shown. while the connected second line control is not shown.
  • the tooth-like abkragende widening 8 of the sleeve 5 only a small part of the circumference of the sleeve 5 and is limited by an axial notch.
  • a width of about 1 mm to 3 mm for the tooth-like abkragende expansion 8 is advantageous.
  • FIG. 3 for the sake of clarity, only a tooth-like, projecting, widening is shown.
  • a screw 17 is provided, to which the clamp 3 in the region of the closure has radially angled ends 15 which can be tightened by the screw 17, so that the clamp 3 axially compresses the line point.
  • other common closure forms such as a clamp for the clamp 3 are applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'invention concerne un raccordement de tuyaux pour assembler une première partie de tuyau (1) et une seconde partie de tuyau (2), notamment pour un système de gaz d'échappement de moteur à combustion interne, comprenant un élément de fixation (3) et un élément d'étanchéité (4), qui présente un manchon (5) et une bague d'étanchéité (6). Selon l'invention, le manchon (5) présente à sa première extrémité (7), un évasement radial (8) et peut être enfoncé dans la première partie de tuyau (1), de sorte que ledit évasement (8) enserre, par derrière, une striction périphérique (11) de la première partie de tuyau (1). Ledit raccordement de tuyaux convient particulièrement bien pour assurer la jonction étanche aux gaz de tuyaux d'échappement de gaz d'automobiles.
EP04790905A 2003-10-30 2004-10-27 Raccordement de tuyaux Withdrawn EP1680615A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10350682A DE10350682A1 (de) 2003-10-30 2003-10-30 Rohrleitungsverbindung
PCT/EP2004/012128 WO2005043025A1 (fr) 2003-10-30 2004-10-27 Raccordement de tuyaux

Publications (1)

Publication Number Publication Date
EP1680615A1 true EP1680615A1 (fr) 2006-07-19

Family

ID=34529916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04790905A Withdrawn EP1680615A1 (fr) 2003-10-30 2004-10-27 Raccordement de tuyaux

Country Status (4)

Country Link
US (1) US20070090645A1 (fr)
EP (1) EP1680615A1 (fr)
DE (1) DE10350682A1 (fr)
WO (1) WO2005043025A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008023276A1 (de) * 2008-05-13 2009-11-19 Henkel Ag & Co. Kgaa Verbinden von Rohren mit thermisch härtbaren Klebstoffen
DE102009007391A1 (de) * 2009-02-05 2010-08-12 J. Eberspächer GmbH & Co. KG Abgasreinigungseinrichtung, Abgasanlage und Schellenverbindung
EP2236892B1 (fr) 2009-04-01 2013-06-19 ElringKlinger AG Raccordement de tuyaux
SG189897A1 (en) 2010-12-02 2013-06-28 Victaulic Co Of America Pipe element having shoulder, groove and bead and methods and apparatus for manufacture thereof
CN104912689A (zh) * 2015-06-27 2015-09-16 奇瑞商用车（安徽）有限公司 汽车排气系统密封结构及密封方法
CN114738571B (zh) * 2022-05-12 2024-07-19 台州芮迪阀门股份有限公司 一种卡箍式拉力管接头

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489587A (en) * 1949-11-29 Connection for furnace members
US1959630A (en) * 1930-10-27 1934-05-22 Keitel Hans Julius Elastic rapid coupling for pipes and hoses
US2635900A (en) * 1948-11-30 1953-04-21 Douglas Aircraft Co Inc Pressure-tight tube joint
US3724878A (en) * 1971-03-24 1973-04-03 J Ford Flexible connector
FR2419393A1 (fr) * 1978-03-10 1979-10-05 Westaflex France Tubulure souple d'echappement de moteur de vehicule
DE3234376C1 (de) * 1982-09-16 1984-03-01 Goetze Ag, 5093 Burscheid Dichtungsring
US4573717A (en) * 1984-07-09 1986-03-04 Hps Corporation Toggle clamp
JP3112118B2 (ja) * 1992-05-18 2000-11-27 日本ピラー工業株式会社 自動車排気系用の渦巻形ガスケット
JPH06241363A (ja) * 1993-02-10 1994-08-30 Toshiomi Hayashi フランジ継手組とその結合方法
EP0646747A1 (fr) * 1993-09-17 1995-04-05 Ck Metals, Ltd. Structure de raccord de tuyaux
US6508491B1 (en) * 2000-11-09 2003-01-21 Guenther Ebinger Exhaust manifold clamp with vibration disconnecting effects for flange connections in exhaust lines and method of making same
JP2002267019A (ja) * 2001-03-05 2002-09-18 Honda Motor Co Ltd 高温継手部用ガスケットおよびその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005043025A1 *

Also Published As

Publication number Publication date
WO2005043025A1 (fr) 2005-05-12
US20070090645A1 (en) 2007-04-26
DE10350682A1 (de) 2005-06-02

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Inventor name: FADINI, ROLF

Inventor name: GUGEL, FRIEDRICH

Inventor name: GNANN, SANDRA

Inventor name: ROEHM, MARTIN

Inventor name: STRASSNER, HANS-JUERGEN

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DAIMLERCHRYSLER AG

Owner name: PETER HUFNAGEL GMBH

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