WO2011134633A1 - Élément de conduite souple - Google Patents

Élément de conduite souple Download PDF

Info

Publication number
WO2011134633A1
WO2011134633A1 PCT/EP2011/002065 EP2011002065W WO2011134633A1 WO 2011134633 A1 WO2011134633 A1 WO 2011134633A1 EP 2011002065 W EP2011002065 W EP 2011002065W WO 2011134633 A1 WO2011134633 A1 WO 2011134633A1
Authority
WO
WIPO (PCT)
Prior art keywords
bellows
damping
metal
metal wool
damping element
Prior art date
Application number
PCT/EP2011/002065
Other languages
German (de)
English (en)
Inventor
Holger Hebisch
Original Assignee
Boa Balg- Und Kompensatoren-Technologie 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 Boa Balg- Und Kompensatoren-Technologie Gmbh filed Critical Boa Balg- Und Kompensatoren-Technologie Gmbh
Publication of WO2011134633A1 publication Critical patent/WO2011134633A1/fr

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
    • F01N13/14—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 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • 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
    • F01N13/14—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 having thermal insulation
    • 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
    • F16L51/027—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
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F16L55/0335—Noise absorbers by means of external rings
    • 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
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/04—Metallic wool, e.g. steel wool, copper wool or the like
    • 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
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/14—Wire mesh fabric, woven glass cloth or the like

Definitions

  • the invention relates to a flexible conduit element, in particular for exhaust pipes of internal combustion engines in motor vehicles, with a bellows, at least one coaxially adjacent to the bellows additional element, in particular a metal braided hose or a metal hose and / or an inside the bellows ange-arranged winding tube, such as an Agraffschlauch.
  • Such line elements are incorporated as intermediate pieces in the exhaust pipe to absorb movements and vibrations and decouple from forwarding to adjacent components, such as torque-dependent tilting movements of the elastically mounted engine, speed-dependent vibrations, inertial influences of vehicle parts in certain driving situations, temperature-induced changes in length etc. arise.
  • the problem of Balgbedämpfung is achieved in that the damping insert surrounds the bellows radially outward and the connecting pieces are connected to each other via a seated on the outside of the damping insert spring.
  • the damping insert here preferably consists of a metallic braid, woven, knitted or crocheted or pressed metal wire.
  • a disadvantage of the hollow cylindrical damping hoses used in the prior art is that a special damping hose is required for each bellows length and for each bellows diameter and thus the variety of variants leads to correspondingly high storage costs.
  • a flexible parameterization of the damping characteristic in knitted hoses or in hollow cylindrical damping cushions made of pressed metal wire is also possible only to a very limited extent.
  • the object of the invention is therefore to improve a conduit element of the type mentioned so that a flexible parameterization of the damping characteristic is possible while reducing the variety of variants and simplified installation.
  • the object is achieved by a line element of the type mentioned, in particular for exhaust pipes of internal combustion engines in motor vehicles, with a bellows, at least one coaxially adjacent to the bellows additional element, in particular a metal braided hose or a metal knitted hose and / or within the bellows arranged winding tube, such as a Agraffschlauch, characterized in that between the bellows and additional element consisting of a metal wool damping element is arranged.
  • the metal wool consists of fine scraped from an output wire long metal fibers.
  • the damping principle is based on the friction between the metal fibers, which have a large number of contact points per unit volume and thus a large number of friction points.
  • the damping parameters can be adjusted specifically over the density of the metal wool, whereby a variable damping characteristics can be achieved within wide limits.
  • a line element designed according to the invention therefore has a damping element consisting of metal wool which reliably prevents the bellows and adjacent components, such as a winding hose or braided hose, from colliding, in particular at critical excitation frequencies, in particular at the natural frequencies of these components, a direct collision and thus A noise emission is avoided or a self-adjusting forced vibration can be limited to a permissible level.
  • the metal wool which can be obtained as a roll product has the decisive advantage over a knit tube or against a pressed hollow cylindrical wire cushion that an almost positive contact between the bellows bristles oscillating during operation and the metal wool is achieved by the more flexible consistency of the metal wool Damping volume is activated in the metal wool than that in a line-only contact, eg with a pillow pressed from wire, is possible.
  • the assembly of the metal wool available by the meter is done in a coaxially outside the bellows arranged damping element by spiral, single or multi-layer wrapping the outside of the bellows with a strip of metal wool whose width corresponds to at least two to three times the wave pitch of the bellows.
  • different bellows lengths and bellows diameter can be equipped with a damping element with only one bandwidth.
  • the damping properties can be additionally varied.
  • the starting and ending points can be used fixed with a wire loop or fixed at reaching to the bellows damping element with the later to be mounted angle rings.
  • the coaxially arranged to the damping element additional element for. B. a knitted or braided hose mounted by coating and fixed by means of angle rings on the cylindrical bellows.
  • the metal wool tape is wound before mounting the winding tube in the bellows, on its outer diameter spirally in single or multi-layered form.
  • the resulting outer diameter of the wrapped corrugated tube is chosen smaller than the clear inner diameter of the bellows.
  • this can be arranged as a strip-shaped band of metal wool helically around the bellows-side lateral surface of the additional element such that it covers only a part of the bellows facing surface of the additional element. This is particularly useful when only a small damping effect between bellows and damping element is required.
  • the damping elements of a plurality of circumferentially arranged on the circumference of the bellows strip-shaped strips of metal wool exist, which then expediently extend to the cylindrical bellows, where they simplify the assembly of the additional element, for.
  • Figure 1 shows an axial section through an inventive
  • Figure 2 shows an alternative design of a flexible conduit member in axial section, in which the
  • Metal wool existing damping element between the metal bellows and the coaxially adjacent metal braided hose is arranged.
  • the flexible conduit element 1 shown in Figure 1 has a ring-corrugated bellows 2 and a surrounding knitted tube 3, whose structure is shown in the uncut, rectangular section and the with the angle rings 5 against the cylindrical bellows is defined and thus serves as a longitudinal support of the conduit member against impermissibly large axial extensions.
  • an additional element in the form of an Agraffschlauches 3a is arranged, which prevents the direct contact of the hot exhaust gases with the bellows and additionally precludes a possible vibration excitation of the bellows waves by the flowing medium.
  • a consisting of metal wool damping element 4 is arranged, which is wound before mounting the Agraffschlauches in the bellows, on its outer diameter in single or multi-layered form.
  • a close-fitting contact between the inner brims of the bellows and the metal wool is achieved by axially compressing the metal wool in the annular gap between bellows and Agraffschlauch.
  • the annular space is closed by widening the Agraff-hose ends against the cylindrical bellows, whereby the damping element 4 is fixed in its position.
  • Figure 2 shows an alternative design of a flexible conduit member in which the inventive, consisting of metal wool-existing damping element is arranged coaxially between the outer rim of the bellows and the inside of the additional element.
  • additional element 3 is in the illustrated embodiment is a braided hose, whose structure is shown in the uncut, rectangular section of Figure 2 and which is fixed with the angle rings 5 against the cylindrical Balgenden and thus serves as a longitudinal support of the conduit element.
  • the assembly of the damping element is done in this embodiment prior to assembly of the braided hose by spiral, single or multi-layer wrapping the outside of the bellows with a strip of metal wool whose width corresponds to at least two to three times the wave pitch of the bellows.
  • the metal wool tape nestles against the contour of the Balgau tokrempen, so that there is a nearly positive contact between the bellows and damping element after wrapping.
  • a large damping volume is thus activated in the contact areas between the outer bellows rim and the adjacent metal wool, which leads to a good damping of the oscillating bellows areas.
  • the start and end points are fixed with a wire loop whose representation in FIG. 2 has been omitted for the sake of clarity.
  • the damping element After the assembly of the braided hose, which is fixed with a small axial prestress by means of the angle rings 5 in the region of the cylindrical Balgenden, the damping element is also under a radial bias, which results from the associated with the elongation of the braid hose diameter reduction.
  • this elastic bedding of the braided hose on the metal wool obtained by the elastic effect of the metal wool in the radial direction and a soft draft stop of the flexible line element.
  • an additional element in the form of an Agraffschlauches 3a is arranged, which serves to protect the bellows against the hot exhaust gases.
  • the illustrated embodiments may of course be combined with each other to particularly vibration sensitive areas of the bellows, the Agraffschlauches 3a or generally an additive element 3 to steam targeted.
  • a design according to FIG. 2 would be conceivable in which the braided hose is replaced by a knit hose in order to prevent lifting of the braided hose from the damping element during large axial compression movements.
  • Another variant with a particularly high risk of resonance of the bellows would be conceivable as a modified design of the embodiment shown in Figure 1, in which in addition to the illustrated réellebedämpfung an external damping with metal wool between knitted tube and Belgau duseite would be provided.

Landscapes

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

Abstract

L'invention concerne un élément de conduite (1) souple, notamment pour des conduites d'échappement de moteurs à combustion interne de véhicules à moteur, comportant un soufflet (2), au moins un élément additionnel (3) coaxialement contigu au soufflet (2), notamment un flexible à mailles métalliques ou un flexible à treillis métallique et/ou un flexible à enroulement disposé à l'intérieur du soufflet (2) tel qu'un flexible à spirale. Selon l'invention, entre le soufflet (2) et l'élément additionnel (3) est disposé un élément amortissant (4) en laine métallique composé d'une bande de laine métallique enroulée en spirale. L'objet selon l'invention permet un paramétrage variable des caractéristiques d'amortissement acoustique tout en réduisant le nombre des variantes possibles et en simplifiant le montage.
PCT/EP2011/002065 2010-04-29 2011-04-21 Élément de conduite souple WO2011134633A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201020006231 DE202010006231U1 (de) 2010-04-29 2010-04-29 Flexibles Leitungselement
DE202010006231.4 2010-04-29

Publications (1)

Publication Number Publication Date
WO2011134633A1 true WO2011134633A1 (fr) 2011-11-03

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ID=42538914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/002065 WO2011134633A1 (fr) 2010-04-29 2011-04-21 Élément de conduite souple

Country Status (2)

Country Link
DE (2) DE202010006231U1 (fr)
WO (1) WO2011134633A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104633365A (zh) * 2014-12-25 2015-05-20 杰瑞石油天然气工程有限公司 一种适用于低温绝热管的伸缩补偿结构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010035311A1 (de) * 2010-08-25 2012-03-01 Boa Balg- Und Kompensatoren-Technologie Gmbh Entkopplungselement, insbesondere für Abgasanlagen
CA2757698A1 (fr) * 2010-11-09 2012-05-09 Tru-Flex Metal Hose, Llc Ensemble de soufflets d'echappement regules par frequences
DE202011104565U1 (de) * 2011-08-18 2012-11-19 Witzenmann Gmbh Wickelschlauch mit torsionaler Fixierung
JP2022129727A (ja) * 2021-02-25 2022-09-06 三菱重工コンプレッサ株式会社 配管構造及び圧縮機システム

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420553A (en) * 1966-02-09 1969-01-07 Calumet & Hecla Apparatus for absorbing sound and vibration in a piping system
EP0282689A2 (fr) * 1987-03-14 1988-09-21 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Elément de conduite flexible pour conduites de gas d'échappement de moteurs à combustion interne
EP0493680A1 (fr) * 1990-12-31 1992-07-08 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Elément de conduite flexible pour tuyaux d'échappement de moteurs à combustion interne pour véhicules
DE4233644C2 (de) 1992-10-06 1994-08-18 Burgmann Dichtungswerk Feodor Flexible Verbindungsanordnung für zwei Rohrteile, insbesondere bei Abgasanlagen von Kraftfahrzeugen
DE4417407C1 (de) * 1994-05-18 1995-11-30 Burgmann Dichtungswerk Feodor Flexible Verbindungsanordnung für zwei Rohrteile, insbesondere bei Abgasanlagen von Kraftfahrzeugen
EP0657683B1 (fr) 1993-11-09 1999-05-26 FLEXIDER S.p.A. Joint flexible d'amortissement des vibrations, en particulier pour un tuyau d'échappement de véhicule
EP0974741A1 (fr) * 1998-07-20 2000-01-26 SJM Company Limited Tube flexible pour tuyau de gaz d'échappement pour vehicules à moteur
DE19848451A1 (de) * 1998-10-21 2000-04-27 Iwk Regler Kompensatoren Flexibles Leitungselement
US6230748B1 (en) * 1997-05-02 2001-05-15 Witzenmann Gmbh Metallschlauch-Fabrik Pforzheim Flexible conduit having a cylindrical knit metal wire element
WO2004074727A1 (fr) * 2003-02-19 2004-09-02 Witzenmann Gmbh Element de conduite flexible
EP1467072A1 (fr) * 2003-04-07 2004-10-13 IWKA Balg- und Kompensatoren Technologie GmbH Elément de conduite flexible
FR2859266A1 (fr) * 2003-09-03 2005-03-04 Tubest Sa Tubulure a isolation thermique et sonore renforcee
DE202007013516U1 (de) * 2007-09-27 2009-02-19 Witzenmann Gmbh Dämpfungsanordnung
DE102007043944A1 (de) * 2007-09-14 2009-03-19 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Flexibles Leitungselement mit kombinierter Wärmeisolation und Schwingungsdämpfung
DE202008008290U1 (de) * 2008-06-20 2009-10-29 Witzenmann Gmbh Flexibles Leitungselement für die Abgasleitung eines Brennkraftmotors

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420553A (en) * 1966-02-09 1969-01-07 Calumet & Hecla Apparatus for absorbing sound and vibration in a piping system
EP0282689A2 (fr) * 1987-03-14 1988-09-21 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Elément de conduite flexible pour conduites de gas d'échappement de moteurs à combustion interne
EP0493680A1 (fr) * 1990-12-31 1992-07-08 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Elément de conduite flexible pour tuyaux d'échappement de moteurs à combustion interne pour véhicules
DE4233644C2 (de) 1992-10-06 1994-08-18 Burgmann Dichtungswerk Feodor Flexible Verbindungsanordnung für zwei Rohrteile, insbesondere bei Abgasanlagen von Kraftfahrzeugen
EP0657683B1 (fr) 1993-11-09 1999-05-26 FLEXIDER S.p.A. Joint flexible d'amortissement des vibrations, en particulier pour un tuyau d'échappement de véhicule
DE4417407C1 (de) * 1994-05-18 1995-11-30 Burgmann Dichtungswerk Feodor Flexible Verbindungsanordnung für zwei Rohrteile, insbesondere bei Abgasanlagen von Kraftfahrzeugen
US6230748B1 (en) * 1997-05-02 2001-05-15 Witzenmann Gmbh Metallschlauch-Fabrik Pforzheim Flexible conduit having a cylindrical knit metal wire element
EP0875669B1 (fr) 1997-05-02 2003-08-13 Witzenmann GmbH Elément de conduite flexible
EP0974741A1 (fr) * 1998-07-20 2000-01-26 SJM Company Limited Tube flexible pour tuyau de gaz d'échappement pour vehicules à moteur
DE19848451A1 (de) * 1998-10-21 2000-04-27 Iwk Regler Kompensatoren Flexibles Leitungselement
WO2004074727A1 (fr) * 2003-02-19 2004-09-02 Witzenmann Gmbh Element de conduite flexible
EP1467072A1 (fr) * 2003-04-07 2004-10-13 IWKA Balg- und Kompensatoren Technologie GmbH Elément de conduite flexible
FR2859266A1 (fr) * 2003-09-03 2005-03-04 Tubest Sa Tubulure a isolation thermique et sonore renforcee
DE102007043944A1 (de) * 2007-09-14 2009-03-19 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Flexibles Leitungselement mit kombinierter Wärmeisolation und Schwingungsdämpfung
DE202007013516U1 (de) * 2007-09-27 2009-02-19 Witzenmann Gmbh Dämpfungsanordnung
DE202008008290U1 (de) * 2008-06-20 2009-10-29 Witzenmann Gmbh Flexibles Leitungselement für die Abgasleitung eines Brennkraftmotors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104633365A (zh) * 2014-12-25 2015-05-20 杰瑞石油天然气工程有限公司 一种适用于低温绝热管的伸缩补偿结构

Also Published As

Publication number Publication date
DE202010006231U1 (de) 2010-08-05
DE102011016923A1 (de) 2011-11-03

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