DE102008014144A1 - Connecting end with torsional degree of freedom and process for its preparation - Google Patents
Connecting end with torsional degree of freedom and process for its preparation Download PDFInfo
- Publication number
- DE102008014144A1 DE102008014144A1 DE102008014144A DE102008014144A DE102008014144A1 DE 102008014144 A1 DE102008014144 A1 DE 102008014144A1 DE 102008014144 A DE102008014144 A DE 102008014144A DE 102008014144 A DE102008014144 A DE 102008014144A DE 102008014144 A1 DE102008014144 A1 DE 102008014144A1
- Authority
- DE
- Germany
- Prior art keywords
- torsional
- freedom
- degree
- tube piece
- connecting end
- 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.)
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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
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
- F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
-
- 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
- F01N13/16—Selection of particular 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
- F01N13/18—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
- 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
- F01N13/1827—Sealings specially adapted for exhaust systems
-
- 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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/0036—Joints for corrugated pipes
- F16L25/0063—Joints for corrugated pipes with two corrugated pipes being directly connected to each other
-
- 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
-
- 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
- F01N2530/18—Plastics material, e.g. polyester resin
-
- 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
- F01N2530/22—Flexible elastomeric material
-
- 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
- F01N2530/24—Sintered porous material, e.g. bronze, aluminium 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
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/26—Multi-layered walls
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
Es wird ein Anschlussende für Leitungselemente beschrieben, welches einen torsionalen Freiheitsgrad besitzt. Es ist dadurch gekennzeichnet, dass es aus mindestens einem innen liegenden Rohrstück und mindestens einem außen liegenden Rohrstück besteht, wobei das innen liegende Rohrstück und das außen liegende Rohrstück an ihren zylindrischen Konturen Nebenformelemente aufweisen, die im Betrieb eine in radialer und axialer Richtung formschlüssige Verbindung erzeugen und in torsionaler Richtung einen Freiheitsgrad haben.
Der axiale und torsionale Freiheitsgrad sind über eine schraubenlinienförmige Verbindung gekoppelt. Dies stellt sicher, dass ein Zusammenbau aus Anschlussende und flexiblem Leitungselement bei dem Einbau in eine Rohrleitung auf eine definierte axiale Länge gebracht werden kann.It describes a terminal end for line elements, which has a torsional degree of freedom. It is characterized in that it consists of at least one inner tube piece and at least one outer tube piece, wherein the inner tube piece and the outer tube piece have at its cylindrical contours auxiliary elements which generate a positive connection in the radial and axial direction during operation and have a degree of freedom in the torsional direction.
The axial and torsional degrees of freedom are coupled via a helical connection. This ensures that an assembly of terminal end and flexible conduit member can be brought to a defined axial length when installed in a pipeline.
Description
Die
Erfindung betrifft das Anschlussende eines Leitungselements für
schwingungsbeanspruchte Rohrleitungen. Sie stellt eine Weiterentwicklung
zum Hauptpatent
Die Aufgabe solcher Anschlussenden besteht darin, einzelne Leitungselemente mit Rohrleitungs-Systemen zu verbinden. Ein Beispiel dafür sind flexible Leitungselemente, die zur Entkopplung von Schwingungen und Betriebsbewegungen in Abgasleitungen integriert werden und zu deren Anschluss in den Rohrleitungen die im folgenden beschriebenen Anschlussenden Verwendung finden.The The task of such connection ends is to provide individual line elements to connect with piping systems. An example of this is flexible piping elements that decouple vibrations and operating movements are integrated into exhaust pipes and to their connection in the piping described below Connecting ends find use.
Aufgrund
der im PKW-Bereich bereits gegenwärtigen Forderung nach
Gasdichtheit werden die Anschlussenden der flexiblen Leitungselemente in
der Regel mit den angrenzenden Abgasleitungen verschweißt.
Ein Metallbalg ist hier oftmals ein Modul solcher flexiblen Leitungselemente.
Da die großen Durchmesserunterschiede in den Wellungen
des Metallbalgs Turbulenzen in der Abgasströmung erzeugen
können, wird in vielen Fällen ein Metallschlauch in
das Leitungselement integriert, um die Wirbelbildung in der Strömung
zu vermeiden.
In den Abgasleitungen von Nutzfahrzeugen treten aufgrund von Betriebsbewegungen, Einbaulage und geometrischer Anordnung vermehrt torsionale Bewegungen auf, die von flexiblen Leitungselementen kompensiert werden müssen. Hier werden oftmals mehrlagige, gewickelte Metallschläuche aus profiliertem Bandmaterial als Entkopplungselement eingesetzt. Insbesondere für den Einsatz in Abgasanlagen von Nutzfahrzeugen sind diese besonders geeignet, da sie, im Gegensatz zu Metallbälgen, große torsionale Bewegungen ohne den Aufbau von Strukturspannungen entkoppeln können. Ihr Nachteil jedoch ist die verbleibende Restleckage.In the exhaust pipes of commercial vehicles occur due to operating movements, Mounting position and geometric arrangement increases torsional movements on, which must be compensated by flexible conduit elements. Here are often multi-layered, wound metal hoses made of profiled strip material used as a decoupling element. In particular for use in exhaust systems of commercial vehicles these are particularly suitable because they, in contrast to metal bellows, large torsional movements without the development of structural stresses can decouple. Their disadvantage, however, is the remaining one Residual leakage.
Da weltweite gesetzliche Vorschriften den Schadstoff-Ausstoß von Nutzfahrzeugen zukünftig deutlich nach unten regulieren, werden Abgasanlagen vermehrt mit Nachbehandlungsmodulen wie z. B. Rußpartikel-Filtern und SCR-Systemen ausgestattet. Eine verbleibende Restleckage, durch die nicht nachbehandeltes Abgas aus dem System entweichen kann, ist nur noch in eingeschränkter Form zulässig. Der Einsatz eines Metallbalgs als flexibles und zugleich gasdichtes Leitungselement ist hier oftmals schwierig, da die orthogonal zur Rotationsachse angeordneten Balgwellen vor allem im torsionalen Lastfall zu großen Spannungen und Spannungsgradienten in der metallischen Struktur führen und somit die Lebensdauer des Leitungselements begrenzen.There worldwide legal regulations pollutant emissions of Regulate Commercial Vehicles Significantly Down In The Future Exhaust systems are increasingly with after-treatment modules such. B. Equipped with particulate filters and SCR systems. A Remaining residual leakage through the untreated exhaust gas can escape from the system is only in limited Form allowed. The use of a metal bellows as a flexible and at the same time gastight line element is often difficult here, because the orthogonal to the rotation axis arranged bellows waves before especially in the torsional load case to large voltages and Voltage gradients in the metallic structure lead and thus limit the life of the conduit element.
Eine
zur Kompensation größerer Torsionsbewegungen vorgesehene
Lösung, die aus zwei zusammengefügten, wendelgewellten
oder ringgewellten Metallbälgen besteht, wird in
Im optimalen Fall sollte durch das Leitungselement keine Teilung des Abgasstroms erfolgen. Weiterhin ist es vorteilhaft die torsionalen Bewegungen aus dem Belastungskollektiv des Metallbalgs zu eliminieren.in the optimal case should not be divided by the conduit element Exhaust flow take place. Furthermore, it is advantageous the torsional To eliminate movements from the load collective of the metal bellows.
Zusätzlich
zu diesem bereits im Hauptpatent
Aufgabe
der Erfindung im Hauptpatent
Die Zusatzaufgabe definiert sich aus der Forderung nach spannungsfreiem Einbau flexibler Leitungselemente, der durch die Ausgestaltung des hier beschriebenen Anschlussendes realisiert wird. Danach soll ein weiterer, im torsionalen Anschlussende enthaltener Freiheitsgrad eine axialen Verschiebemöglichkeit erzeugen. Diese axiale Verschiebung soll lediglich einmalig beim Einbau des flexiblen Elements zusammen mit dem beschriebenen Anschlussende in das Leitungssystem erfolgen. Im späteren Betrieb soll lediglich der torsionale Freiheitsgrad zur Kompensation von Betriebsbewegungen bereitstehen.The Additional task is defined by the requirement for voltage-free Installation of flexible conduit elements, by the design of the realized end of the connection described here. After that, one should further degree of freedom contained in the torsional connection end create an axial displacement possibility. This axial Displacement should only once during installation of the flexible element together with the described connection end in the line system respectively. In later operation, only the torsional Degree of freedom available to compensate for operational movements.
Die Aufgabe wird erfindungsgemäß mit den Merkmalen der Ansprüche 1 und 2 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen enthalten.The Task is according to the invention with the features of claims 1 and 2 solved. Advantageous embodiments are included in the subclaims.
Das erfindungsgemäße Anschlussende wird aus mindestens zwei Rohrstücken zusammengesetzt. Dabei ist der Außendurchmesser des innen liegenden Rohrstücks kleiner als der Innendurchmesser des außen liegenden Rohrstücks. Beide Rohrstücke weisen im Zusammenbau vorzugsweise in einer Umformoperation erzeugte Hinterschneidungen auf, so dass eine formschlüssige Verbindung in radialer Richtung sowie ein Freiheitsgrad in torsionaler Richtung vorliegt. Zur Realisierung der axialen Einstellbarkeit beim Einbau sind die Hinterschneidungen spiralförmig am Umfang der Rohrstücke angeordnet.The Terminal end according to the invention will consist of at least composed of two pieces of pipe. Here is the outer diameter of the inner pipe section smaller than the inner diameter of the outer pipe section. Both pipe pieces in assembling, preferably produced in a forming operation Undercuts on, allowing a positive connection in the radial direction and a degree of freedom in the torsional direction is present. To realize the axial adjustability during installation the undercuts are spiraling around the circumference of the Pipe pieces arranged.
Das so gebildete Gewinde ermöglicht durch die Verdrehung der Rohrstücke eine axiale Längeneinstellung. Eine vorteilhafte geometrische Auslegung der Erfindung sieht eine Gewindesteigung von 20 mm pro 360° vor, so dass die Rohrstücke mit zwei Umdrehungen einen Längenausgleich von 40 mm realisieren können.The thus formed thread made possible by the rotation of the Pipe pieces an axial length adjustment. A advantageous geometric design of the invention provides a thread pitch of 20 mm per 360 ° before, so that the pipe sections realize a length compensation of 40 mm with two turns can.
Nach dem Einbau werden die Rohrstücke im Leitungssystem verdrehfest zueinander positioniert. Torsionale Betriebsbewegungen des Leitungssystems liegen im Bereich ±5°. Beim torsionalen Ausgleich werden durch die Gewindesteigung im Anschlussende axiale Bewegungen erzeugt, die deutlich unterhalb von ±1 mm liegen und somit vernachlässigbar klein sind.To the installation, the pipe sections are twist-resistant in the pipe system positioned to each other. Torsional operating movements of the pipe system are within ± 5 °. When torsional compensation become axial movements by the thread pitch in the connection end generated, which are well below ± 1 mm and thus are negligibly small.
Im Bereich der Kontaktflächen zwischen innen liegendem und außen liegendem Rohrstück befindet sich vorzugsweise ein Zwischenstoff, der sowohl eine dichtende Wirkung als auch Gleiteigenschaften aufweist. Dieser Aufbau ermöglicht eine schraubenlinienförmige, kombinierte torsionale und axiale Verschiebung unter Durchströmung in Verbindung mit einer minimalen Restleckage. Alternativ können zu dem einen Zwischenstoff auch mehrere unterschiedliche Zwischenstoffe vorliegen, die jeweils die Dichtfunktion oder die Gleitfunktion übernehmen. Diese Zwischenstoffe können entsprechend ihrer Funktion fest und spröde, duktil, pastös oder flüssig sein.in the Range of contact surfaces between inside and outside lying pipe section is preferably an intermediate that has both a sealing effect and sliding properties having. This structure allows a helical, combined torsional and axial displacement under flow in conjunction with a minimal residual leakage. Alternatively you can to the one intermediate also several different intermediates present, each take over the sealing function or the sliding function. These intermediates can be used according to their function solid and brittle, ductile, pasty or liquid be.
Folgende Zwischenstoffe sind beispielhaft, jedoch in der Aufzählung nicht abschließend für den Anwendungsfall geeignet:
- – Gestrickte und gepresste Elemente aus Edelstahlfasern und Graphitfasern.
- – Gestrickte und gepresste Elemente aus Edelstahlfasern und saugfähigen Fasern, an denen durch Tauchen in eine Flüssigkeit eine Graphit-Anlagerung erzeugt wird.
- – Precursorbeschichtetes Gewebe, bei dem der Grundwerkstoff Aluminiumoxid ist.
- – Precursorbeschichtetes Gewebe, bei dem der Grundwerkstoff glasartig ist.
- – Ein präkeramisches Polymer in fester, pastöser oder schaumförmiger Konsistenz.
- – Mit temperaturbeständigem Gleitwerkstoff beschichtetes Metall.
- – Mit präkeramischen Polymeren beschichtetes Metall.
- – Faserverstärktes Graphitband.
- – Temperaturbeständiger Gleitlack.
- - Knitted and pressed elements made of stainless steel fibers and graphite fibers.
- - Knitted and pressed elements made of stainless steel fibers and absorbent fibers, which are dipped in a liquid to create a graphite attachment.
- - Precursor-coated fabric in which the base material is alumina.
- Precursor-coated fabric in which the base material is vitreous.
- - A preceramic polymer in a solid, pasty or foamy consistency.
- - Metal coated with temperature-resistant sliding material.
- - Metal coated with preceramic polymers.
- - Fiber reinforced graphite tape.
- - Temperature-resistant bonded coating.
Ebenso Kombinationen aus den genannten Zwischenstoffen können für spezielle Anwendungsfälle besonders geeignet sein.As well Combinations of the mentioned intermediates can especially suitable for special applications be.
Die Hinterschneidungen haben in ihren Konturen vorzugsweise große Radien und können schraubenlinienförmig ausgebildet sein.The Undercuts preferably have large contours Radii and can be helical be.
Weitere Varianten der beschriebenen Anschlussenden sind denkbar und basieren auf dem zuvor beschriebenen Grundkonzept, welches den torsionalen Freiheitsgrad ermöglicht, den radialen sperrt und den axialen über eine gewindeartige Geometrie einstellbar gestaltet.Further Variants of the connection ends described are conceivable and based on the basic concept described above, which is the torsional Degree of freedom allows the radial locks and the axial over a thread-like geometry made adjustable.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102007036453 [0001, 0009, 0010] - DE 102007036453 [0001, 0009, 0010]
- - DE 19820863 A1 [0003] - DE 19820863 A1 [0003]
- - DE 19824095 C2 [0006] - DE 19824095 C2 [0006]
- - DE 10354782 B3 [0007] - DE 10354782 B3 [0007]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008014144A DE102008014144A1 (en) | 2007-08-01 | 2008-03-14 | Connecting end with torsional degree of freedom and process for its preparation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007036453A DE102007036453A1 (en) | 2007-08-01 | 2007-08-01 | Connector end, has internal pipe section and external pipe section exhibiting auxiliary form elements on contours, where elements produce positive connection in radial and axial direction and have degree of freedom in torsional direction |
DE102008014144A DE102008014144A1 (en) | 2007-08-01 | 2008-03-14 | Connecting end with torsional degree of freedom and process for its preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008014144A1 true DE102008014144A1 (en) | 2009-09-17 |
Family
ID=40175883
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007036453A Ceased DE102007036453A1 (en) | 2007-08-01 | 2007-08-01 | Connector end, has internal pipe section and external pipe section exhibiting auxiliary form elements on contours, where elements produce positive connection in radial and axial direction and have degree of freedom in torsional direction |
DE102008014144A Withdrawn DE102008014144A1 (en) | 2007-08-01 | 2008-03-14 | Connecting end with torsional degree of freedom and process for its preparation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007036453A Ceased DE102007036453A1 (en) | 2007-08-01 | 2007-08-01 | Connector end, has internal pipe section and external pipe section exhibiting auxiliary form elements on contours, where elements produce positive connection in radial and axial direction and have degree of freedom in torsional direction |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE102007036453A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007036453A1 (en) | 2007-08-01 | 2009-02-05 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Connector end, has internal pipe section and external pipe section exhibiting auxiliary form elements on contours, where elements produce positive connection in radial and axial direction and have degree of freedom in torsional direction |
DE202011104564U1 (en) * | 2011-08-18 | 2012-11-19 | Witzenmann Gmbh | Flexible cable element with damping |
CN102644824B (en) * | 2012-04-23 | 2014-08-06 | 西安交通大学 | Spherical expansion joint for dual-metal composite pipes and processing method thereof |
CN105570593A (en) * | 2014-10-13 | 2016-05-11 | 江苏彩阳环保科技有限公司 | Maintenance-free steel inner cylinder expansion joint for chimney |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19820863A1 (en) | 1998-05-09 | 1999-11-18 | Witzenmann Metallschlauchfab | Flexible pipe element |
DE19824095C2 (en) | 1998-05-29 | 2000-05-18 | Iwk Regler Kompensatoren | Flexible pipe element |
DE10354782B3 (en) | 2003-11-21 | 2005-07-14 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Torsional decoupling element for pipelines subject to vibration has bellows-type components offset axially to pipe axis of adjacent line system |
DE102007036453A1 (en) | 2007-08-01 | 2009-02-05 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Connector end, has internal pipe section and external pipe section exhibiting auxiliary form elements on contours, where elements produce positive connection in radial and axial direction and have degree of freedom in torsional direction |
-
2007
- 2007-08-01 DE DE102007036453A patent/DE102007036453A1/en not_active Ceased
-
2008
- 2008-03-14 DE DE102008014144A patent/DE102008014144A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19820863A1 (en) | 1998-05-09 | 1999-11-18 | Witzenmann Metallschlauchfab | Flexible pipe element |
DE19824095C2 (en) | 1998-05-29 | 2000-05-18 | Iwk Regler Kompensatoren | Flexible pipe element |
DE10354782B3 (en) | 2003-11-21 | 2005-07-14 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Torsional decoupling element for pipelines subject to vibration has bellows-type components offset axially to pipe axis of adjacent line system |
DE102007036453A1 (en) | 2007-08-01 | 2009-02-05 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Connector end, has internal pipe section and external pipe section exhibiting auxiliary form elements on contours, where elements produce positive connection in radial and axial direction and have degree of freedom in torsional direction |
Also Published As
Publication number | Publication date |
---|---|
DE102007036453A1 (en) | 2009-02-05 |
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