DE2009227A1 - - Google Patents
Info
- Publication number
- DE2009227A1 DE2009227A1 DE19702009227 DE2009227A DE2009227A1 DE 2009227 A1 DE2009227 A1 DE 2009227A1 DE 19702009227 DE19702009227 DE 19702009227 DE 2009227 A DE2009227 A DE 2009227A DE 2009227 A1 DE2009227 A1 DE 2009227A1
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- towards
- ribs
- gradually
- tube
- 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.)
- Pending
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
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
- F16L9/06—Corrugated 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
- F01N13/1811—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
-
- 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
-
- 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
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)
Description
Professor Dr.-Ing.Professor Dr.-Ing.
RObe£pl!-Ing.<i a U ■■■ »">» 8M/«g RObe £ pl! -Ing. <ia U ■■■ »"> »8M /« g
Gustav M e 1 d a u ■Gustav M e 1 d a u ■
- Patentanwälte 483 Gütersloh
Carl-jBertelsmann-Str. 4- Patent attorneys 483 Gütersloh
Carl-jBertelsmann-Str. 4th
Firmacompany
WestaflexwerkWestaflexwerk
L. & F. WesterbarkeyL. & F. Westerbarkey
483 Gütersloh483 Gütersloh
Zum Stillen Frieden 22To quiet peace 22
Flexibles RillenrohrFlexible grooved tube
Die Erfindung liegt auf dem Gebiet der aus Metallfolien- oder Blechstreifen gewickelten, spiralförmig gerillten flexiblen Rohre und betrifft insbesondere ein solches Rohr, das als Rohrabschnitt, beispielsweise als Schwingungsabsorber und Dehnungsausgleicher in eine Abgasleitung oder dergl. einzubauen ist.The invention lies in the field of flexible spirally grooved flexible strips wound from metal foil or sheet metal strips Pipes and relates in particular to such a pipe that is used as a pipe section, For example, it is to be installed as a vibration absorber and expansion compensator in an exhaust pipe or the like.
Derartige Rohre sind vorzugsweise aus Metallfolie^ z.B. Edelstahl, gefertigt,und sie sind sehr starken Beanspruchungen und zwar hauptsächlich Schwingungsbeanspruchungen aber auch anderen mechanischen und thermischen sowie auch chemischen Beanspruchungen unterworfen. Im Verlauf von Versuchen hat es sich ergeben, daß derartige Rohre zwar sehr gut geeignet sind, beispielsweise als Zwischenstücke zur Aufnahme von Schwingungen in Abgasanlagen von Kraftfahrzeugen eingesetzt zu werden, es hat sich jedoch immer wieder gezeigt, daßSuch pipes are preferably made of metal foil, e.g. stainless steel, manufactured, and they are very heavy-duty, mainly Vibration loads but also other mechanical and thermal as well as chemical loads. In the course of experiments, it has been found that such pipes are very well suited, for example as intermediate pieces for To be used to absorb vibrations in exhaust systems of motor vehicles, but it has been shown time and again that
109836/0784109836/0784
an oder nahe der Verbindungsstelle zu den starren Rohren Risse und auch Brüche im flexiblen Rohr auftreten.cracks and breaks in the flexible pipe occur at or near the connection point to the rigid pipes.
Der Erfinder hat erkannt, daß diese Erscheinungen darauf zurückzuführen sind, daß offenbar die Anschlußstellen bzw. Übergangsstücke der flexiblen Rohre zu stark beansprucht sind, weil die Schwingungen dort eingeleitet werden und das Material dadurch überbeansprucht wird. Die Erfindung hat sich daher die Aufgabe gestellt, ein Rohr zu schaffen, das Schwingungen absorbiert und Dehnungen ausgleicht, über seine Länge jedoch möglichst gleichmäßig beansprucht wird und in seinem Aufbau allmählich von einem starren Rohr in ein flexibles Rohr übergeht.The inventor has recognized that these phenomena can be attributed to are that apparently the connection points or transition pieces of the flexible pipes are too much stressed because the Vibrations are introduced there and the material is overstressed as a result. The invention has therefore set itself the task of To create a pipe that absorbs vibrations and compensates for expansion, but as evenly as possible over its length is stressed and gradually changes in its structure from a rigid pipe to a flexible pipe.
Nach der Erfindung ist ein aus Metallfolien- oder Blechstreifen gewickeltes, spiralförmig gerilltes flexibles Rohr dadurch gekennzeichnet, daß die Rillen bzw. Rippen nach den Enden des Rohres hin allmählich zunehmend gestaucht oder gepreßt sind. Der Berei, in dem die Rippen nach den Enden des Rohres hin allmählich zunehmend gepreßt sind, entspricht einer Länge von mindestens einem Rohrdurchmesser, zweckmäßig jedochzwei oder mehreren Rohrdurchmessern. Die zum Rohrende hin allmählich zunehmende Pressung der Rippen kann statt über den ganzen Umfang auch nur an einigen zum Rohrende hin verbreiterten keilförmigen Bereichen angeordnet sein. Das Rohr weist zu seinen Enden hin bis zur Starrheit allmählich abnehmende Flexibilität auf.According to the invention, a spiral-shaped, grooved flexible tube wound from metal foil or sheet metal strips is characterized in that that the grooves or ribs are gradually increasingly compressed or pressed towards the ends of the tube. The area in which the ribs are gradually increasingly pressed towards the ends of the pipe, corresponds to a length of at least one pipe diameter, however, it is expedient to have two or more pipe diameters. The pressure of the ribs gradually increasing towards the end of the pipe instead of being arranged over the entire circumference, it can also be arranged only in a few wedge-shaped areas that are widened towards the end of the pipe. The pipe has gradually decreasing flexibility towards its ends up to the point of rigidity.
Die Erfindung wird nachstehend anhand von Aasführungsbeispielen mit Bezug auf die Zeichnungen näher erläutert. In den Zeichnungen zeigen:The invention is illustrated below with the aid of examples Referring to the drawings explained in more detail. In the drawings show:
109836/0784109836/0784
Fig. 1 perspektivische Darstellung eines flexiblen Rillenrohres,Fig. 1 is a perspective view of a flexible grooved pipe,
Pig».-" 2 einen Bängsquerschnitt durch die Wandung an einem Ende des Rohres nach Fig. 1, .Pig ».-" 2 a longitudinal cross-section through the wall at one end of the Tube according to FIG. 1,.
Fig. 3 eine andere Ausführungsform eines Rohrendes. ■>3 shows another embodiment of a pipe end. ■>
Ein in bekannter Weise hergestelltes Rohr entsprechend der Fig. 1 ist aus Blechstreifen gewickelt und mit spiralförmig verlaufenden Rillen oder Rippen an seinem Umfang versehen, deren Flanken zweckmäßig auf einem kurzen Stück gerade verlaufen und vorzugsweise zueinander parallel liegen. Das Rohr ist aus vorgerillten Streifen aus Edelstahlblech gewickelt. Die Streifen können einlagig oder mehrlagig sein und sind an ihren Kanten miteinander verfalzt. Das Rohrstück 1 wird mit seinen Enden in etwas trichterförmig aufgeweitete Anschlüsse der starren Rohre 2 der Abgasanlage von Kraftfahrzeugen, stationären Verbrennungsmotoren oder dergl. eingesteckt und befestigt« Die Enden des Rohres 1 sind entsprechend der Fig. 2 ausgebildet und zwar sind zu dem Ende des Rohres hin allmählich zunehmend die Rippen oder Rillen zusammengepreßt oder gestaucht, so daß sie eine Form annehmen, bei der die äußeren und -inneren Rundungen zunehmend abgeplattet werden und die Zwischenräume zwischen den äußeren und inneren Runden zunehmend geringer werden, bis kurz vor dem Ende die abgeplatteten Außen- und Innenbereiche der Rippen oder Rillen sich berühren. Durch diese Verformung oder Stauchung der Rippen wird eine zum Rohrende hin zunehmende Starrheit bzw. allmählich abnehmende Flexibilität des Rohres erreicht. Die in das Rohr 1A tube produced in a known manner as shown in FIG. 1 is wound from sheet metal strips and with spirals Provided grooves or ribs on its circumference, the flanks of which expediently run straight on a short piece and are preferably parallel to one another. The tube is made of pre-grooved Strips of stainless steel sheet wrapped. The strips can be single-ply or be multilayered and are at their edges with each other crimped. The pipe section 1 is somewhat funnel-shaped with its ends Expanded connections of the rigid pipes 2 of the exhaust system of motor vehicles, stationary internal combustion engines or the like. inserted and fastened "The ends of the tube 1 are designed as shown in FIG. 2 and that are towards the end of the tube gradually increasing the ribs or grooves compressed or upset so that they assume a shape in which the outer and inner curves are increasingly flattened and the spaces between the outer and inner Rounds become increasingly smaller, until shortly before the end the flattened outer and inner areas of the ribs or grooves touch. This deformation or compression of the ribs results in a rigidity that increases or gradually increases towards the end of the pipe achieved decreasing flexibility of the pipe. The in the pipe 1
■■■■- 4 -■■■■ - 4 -
\ 109836/0784\ 109836/0784
von den starren Rohren 2 eingeleiteten Schwingungen und andere mechanische Beanspruchungen werden aufgrund dieser besonderen Formgebung von dem Rohr 1 an den Enden zunächst in vollem Umfang aufgenommen; die starrgemachten Enden des Rohres 1 schwingen in gleicher Weise wie die anschließenden starren Rohre 2.Erst im Abstand von den Rohrenden wird das Rohr 1 allmählich zunehmend flexibler und biegsamer, so daß es die eingeleiteten Schwingungen auf seine Länge gleichmäßiger verteilt aufnehmen und absorbieren kann. In Dauerversuchen hat sich gezeigt, daß die Standfestigkeit eines Rohres nach der Erfindung um mindestens eine Zehnerpotenz höher liegt als bei anderen vergleichbaren Rohren, deren Enden nicht verformt sind. Bei derartigen nichtverformten Rohren scheint die gesamte eingeleitete Schwingungsenergie im Bereich der Enden aufgenommen zu werden, so daß dort das Material überbeansprucht wird.Vibrations introduced by the rigid pipes 2 and other mechanical stresses are due to this special Shaping of the tube 1 at the ends initially taken in full; the rigidized ends of the tube 1 swing in in the same way as the subsequent rigid pipes 2, only at a distance from the pipe ends does pipe 1 gradually increase more flexible and pliable, so that it absorbs and absorbs the vibrations introduced more evenly along its length can. In long-term tests it has been shown that the stability of a pipe according to the invention by at least a power of ten higher than with other comparable pipes, the ends of which are not deformed. In the case of such undeformed pipes the entire vibrational energy introduced to be absorbed in the area of the ends, so that there is overstressed the material will.
Die Verformung bzw. Pressung der Enden des Rohres kann beispielsweise derart vorgenommen werden, daß das Rohr auf einen massiven Dorn eng aufsitzend aufgesteckt wird und dann von außen mit einem Drück- oder rollenden Werkzeug unter zum Ende hin zunehmender Pressung die Rippen verformt werden, so daß sie die in Fig. 2 gezeigte Profilform annehmen. Es ist nicht unbedingt erforderlich, die Verformung der Rippen entsprechend der Fig. 2 auf dem ganzen Umfang des Rohres durchzuführen, es genügt, wenn nur In einigen zum Rohrende hin verbreiterten keilförmigen Bereichen eine derartige Verformung vorgenommen ist.The deformation or compression of the ends of the tube can, for example be made in such a way that the tube is fitted tightly onto a solid mandrel and then from the outside with a Pressing or rolling tool with increasing pressure towards the end, the ribs are deformed, so that they are the ones shown in FIG Assume the profile shape shown. It is not absolutely necessary to perform the deformation of the ribs according to FIG. 2 over the entire circumference of the tube, it is sufficient if only in a few wedge-shaped areas widened towards the end of the pipe such a deformation is carried out.
09836/078409836/0784
Claims (1)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702009227 DE2009227A1 (en) | 1970-02-27 | 1970-02-27 | |
| FR7025089A FR2080303A5 (en) | 1970-02-27 | 1970-07-07 | |
| JP45130805A JPS522126B1 (en) | 1970-02-27 | 1970-12-28 | |
| CA102,388A CA943476A (en) | 1970-02-27 | 1971-01-11 | Flexible grooved pipe |
| ZA710169A ZA71169B (en) | 1970-02-27 | 1971-01-12 | Flexible grooved pipe |
| BR001021/71A BR7101021D0 (en) | 1970-02-27 | 1971-02-16 | IMPROVEMENTS IN FLEXIBLE CORNED TUBE IN SPECIAL FOR DISCHARGE GAS PIPES |
| GB2194371A GB1335278A (en) | 1970-02-27 | 1971-04-19 | Pipes and conduits incorporating same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702009227 DE2009227A1 (en) | 1970-02-27 | 1970-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2009227A1 true DE2009227A1 (en) | 1971-09-02 |
Family
ID=5763530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702009227 Pending DE2009227A1 (en) | 1970-02-27 | 1970-02-27 |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS522126B1 (en) |
| BR (1) | BR7101021D0 (en) |
| CA (1) | CA943476A (en) |
| DE (1) | DE2009227A1 (en) |
| FR (1) | FR2080303A5 (en) |
| GB (1) | GB1335278A (en) |
| ZA (1) | ZA71169B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2645946A1 (en) * | 1976-10-12 | 1978-04-13 | Pforzheim Metallschlauch | Metal or plastic corrugated tubing - made by spirally overlapping together lengths of corrugated section tape or tube |
| DE2655091A1 (en) * | 1976-12-04 | 1978-06-08 | Pforzheim Metallschlauch | Flexible exhaust pipe for vehicle IC engine - uses corrugated pipe with corrugations at one or both ends widened and made shallower or both |
| DE3506626A1 (en) * | 1984-12-19 | 1986-06-26 | Katayama Kogyo Co., Ltd., Ibara, Okayama | Flexible exhaust pipe for a motor vehicle |
| DE4202808A1 (en) * | 1992-01-31 | 1993-08-05 | Westfalia Metallformtechnik Gm | Flexible line element for vehicle exhaust gas line with helix-shaped or corrugated bellows - has metallic hose arranged in it having outer dia. smaller than clearance cross-section of bellows and their respective ends are connected together for exhaust line |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL183957C (en) * | 1976-12-04 | 1989-03-01 | Witzenmann Metallschlauchfab | FLEXIBLE PIPE ELEMENT FOR AN EXHAUST PIPE OF A COMBUSTION ENGINE. |
| EP0104835A1 (en) * | 1982-09-29 | 1984-04-04 | Standard Hose Limited | Hose pipe |
| US4793384A (en) * | 1986-02-11 | 1988-12-27 | Titeflex Corporation | Self-damping convoluted conduit |
| US4854416A (en) * | 1986-06-09 | 1989-08-08 | Titeflex Corporation | Tuned self-damping convoluted conduit |
| EP0234706B1 (en) * | 1986-02-11 | 1991-09-11 | Titeflex Corporation | Tuned self-damping convoluted conduit |
| US4867269A (en) * | 1987-06-30 | 1989-09-19 | Titeflex Corporation | Tuned self-damping convoluted conduit |
| DE19951947A1 (en) * | 1998-11-02 | 2000-05-04 | Luk Getriebe Systeme Gmbh | Hydraulic pressure system for operation of clutch or brake systems on road vehicle has flexible corrugated hose between cylinder connected to pedal and cylinder connected to clutch or brake |
| DE102005010757A1 (en) * | 2005-03-09 | 2006-09-21 | Audi Ag | Exhaust gas system for motor vehicle, has connecting mechanism arranged between adjacent components of system, and deviatable during excess of given mechanical load i.e. with crash of vehicle, where defined deviation of system is introduced |
| CN105673972B (en) * | 2016-03-16 | 2017-11-17 | 安徽万瑞冷电科技有限公司 | Vacuum pipe |
| CN107281682A (en) * | 2017-08-03 | 2017-10-24 | 苏州顺瑞电气有限公司 | Multifunction expanding fire hose |
| CN111853409B (en) * | 2020-06-24 | 2022-04-05 | 洛阳双瑞特种装备有限公司 | Corrugated pipe with different deformation strengthening layers |
-
1970
- 1970-02-27 DE DE19702009227 patent/DE2009227A1/de active Pending
- 1970-07-07 FR FR7025089A patent/FR2080303A5/fr not_active Expired
- 1970-12-28 JP JP45130805A patent/JPS522126B1/ja active Pending
-
1971
- 1971-01-11 CA CA102,388A patent/CA943476A/en not_active Expired
- 1971-01-12 ZA ZA710169A patent/ZA71169B/en unknown
- 1971-02-16 BR BR001021/71A patent/BR7101021D0/en unknown
- 1971-04-19 GB GB2194371A patent/GB1335278A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2645946A1 (en) * | 1976-10-12 | 1978-04-13 | Pforzheim Metallschlauch | Metal or plastic corrugated tubing - made by spirally overlapping together lengths of corrugated section tape or tube |
| DE2655091A1 (en) * | 1976-12-04 | 1978-06-08 | Pforzheim Metallschlauch | Flexible exhaust pipe for vehicle IC engine - uses corrugated pipe with corrugations at one or both ends widened and made shallower or both |
| DE3506626A1 (en) * | 1984-12-19 | 1986-06-26 | Katayama Kogyo Co., Ltd., Ibara, Okayama | Flexible exhaust pipe for a motor vehicle |
| DE4202808A1 (en) * | 1992-01-31 | 1993-08-05 | Westfalia Metallformtechnik Gm | Flexible line element for vehicle exhaust gas line with helix-shaped or corrugated bellows - has metallic hose arranged in it having outer dia. smaller than clearance cross-section of bellows and their respective ends are connected together for exhaust line |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1335278A (en) | 1973-10-24 |
| ZA71169B (en) | 1972-02-23 |
| FR2080303A5 (en) | 1971-11-12 |
| BR7101021D0 (en) | 1973-05-10 |
| JPS522126B1 (en) | 1977-01-20 |
| CA943476A (en) | 1974-03-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OGA | New person/name/address of the applicant | ||
| OHN | Withdrawal |