WO2010028872A1 - Non-detachable conduit connection - Google Patents
Non-detachable conduit connection Download PDFInfo
- Publication number
- WO2010028872A1 WO2010028872A1 PCT/EP2009/057709 EP2009057709W WO2010028872A1 WO 2010028872 A1 WO2010028872 A1 WO 2010028872A1 EP 2009057709 W EP2009057709 W EP 2009057709W WO 2010028872 A1 WO2010028872 A1 WO 2010028872A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pipe socket
- pipe
- compression collar
- longitudinal section
- connection
- 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.)
- Ceased
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Classifications
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- 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
- F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
- F16L13/14—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/141—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
- F16L13/143—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element placed around the male part before crimping or rolling
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- 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
- F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
- F16L13/14—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/16—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
- F16L13/161—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling
- F16L13/163—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling one collar being bent over the other
Definitions
- the invention relates to a pipeline having two fixedly connected in a solderless connection pipe sections or with a pipe section which is firmly connected to a connection to a hose or other pipeline mediating tubular nipple or pipe socket, according to the features of the preamble of the claim.
- a solid, non-detachable pipe connection is achieved in that in the firmly connected state of the pipe, the projection of the connection sleeve around the compression collar of the pipe socket is formed radially inwardly around that the pipe socket is not pulled out of the stepped bore of the connection sleeve, since the inner diameter of the supernatant now smaller than the outer diameter of the compression collar of the pipe socket.
- the in the annular space between the compression collar of the pipe socket and the conical step of the stepped bore of the connection sleeve clamped or axially pressed sealing ring seals the pipe socket against the connection sleeve.
- the sealing ring is pressed against the inclined annular surface of the conical step of the stepped bore of the connection sleeve.
- the annular space lying obliquely to the pipe axis and receiving the sealing ring has no escape space when the sealing ring has become open due to media contact. There is thus the risk of destruction of the sealing ring. Due to the angles of the two annular space corners smaller than 90 °, the sealing ring is pressed into the resulting triangles and deformed there more than in an annular space with only right angles. The risk of a split extrusion is extremely high.
- the sealing ring is forced through the pressure prevailing in the hydraulic line operating pressure in the gap of the components to be sealed. If the shear resistance of the sealing ring is insufficient, the sealing material migrates into the gap between the inner and outer part. Both components are subject to a manufacturing tolerance, so that at their junction depending on the tolerances of the components creates a gap. The sealing ring is there very soon extremely deformed and further destroyed. The case of the sealing body resulting plastic deformation is increasing with continuous pressurization. In the final stage it comes to the failure of the seal, as by the changed voltage distributions in the sealing body a sufficient sealing function is no longer guaranteed.
- the invention has for its object to provide a solid and permanent pipe connection of the type described above, in which no screwing or thermal joining methods are necessary and an undefined compression of the Abdichtringes with the dangers of destruction of the Abdichtringes due to occurring gap extrusion is minimized.
- the object is achieved in that the length of the region of the pipe socket between its front end and the compression collar is greater than the length of the second longitudinal section of the stepped bore, so that an annular space between the compression collar of the pipe socket and the shoulder formed between the second and third longitudinal section is, in which the sealing ring is defined axially defined unenclosed under axial clearance.
- the sealing takes place only by a radial deformation of the Abdichtringes between the outer circumference of the nipple or pipe socket and the inner circumference of the undeformed third longitudinal portion of the connection sleeve.
- the compression collar of the inserted pipe socket is arranged at a distance from the bottom of a stepped bore of the connection sleeve in the inserted state.
- the O-shaped sealing ring is arranged so that no axial pressing forces act on this.
- the sealing ring is merely tensioned radially and thus ensures the sealing effect.
- the annular space receiving the sealing ring is formed by the compression collar and a shoulder of the stepped bore in the connection sleeve.
- This arrangement has the advantage that the nipple or pipe socket is firmly and permanently connected to the connection sleeve, wherein the sealing ring experiences no gap extrusion.
- the seat of the Abdichtringes has a symmetrical shape of an annular space.
- both components After their connection, both components together create a defined symmetrical annular space which receives the sealing ring, which is pressed there only radially and the separation point radially seals these two components. The risk of leaks leading assembly errors is minimized.
- the pipe socket undergoes no diameter reduction during pressing, a screw connection can be omitted. An elaborate groove in the bore of the connection sleeve for receiving a Abdichtringes is unnecessary.
- Figure 1 is a connection point of a pipe in which in the end of a pipe section one end of a pipe socket is inserted, wherein the two parts are not yet firmly connected;
- Fig. 2 shows the pipe connection of Figure 1 with firmly connected parts.
- a connection point of a pipe 3 is shown, in which the ends of a pipe section 4 and a pipe socket 5 are inserted into one another.
- a tubular nipple may be connected, which is configured at its other end for receiving a hose.
- the pipe socket 5 has an upset, outwardly projecting compression collar 6, which is spaced from the front end 7 of the pipe socket 5.
- the pipe section 4 has a connection sleeve 8, which is penetrated by a central stepped bore 9 coaxially.
- the stepped bore 9 has a first longitudinal section with an inner diameter 11 which is smaller than the outer diameter 12 of the pipe socket 5.
- the stepped bore 9 has a second longitudinal section with a second inner diameter 13, which is the outer diameter 12 of the pipe socket 5 corresponds and in which the pipe socket 5 is pushed. Is between the first and second length section by the diameter jump an annular shoulder 17 is present.
- a third longitudinal section of the stepped bore 9 has an inner diameter 14 which is dimensioned such that the compression collar 6 of the pipe socket 5 fits into this inner diameter 14 in the circumference approximately adjacent to the bore inner wall of this longitudinal section.
- annular shoulder 15 is provided by the diameter jump, which also forms an annular surface.
- the compression collar 6 of the pipe socket 5 is in the inserted state shown spaced from the shoulder 15 of the connection sleeve 8, so that an annular space 10 is formed between the compression collar 6 of the pipe socket 5 and the shoulder 15, in which the sealing ring 18 is arranged axially unclamped under axial free space, ie the length of the annular space 10 is slightly larger than the width of the Abdichtringes 16th
- connection sleeve 8 has at the free end on a projection 18 which projects beyond the compression collar 6 of the pipe socket 5 at fully inserted pipe socket 5.
- Fig. 2 shows the pipe connection in a firmly connected state.
- the projection 18 of the connection sleeve 8 is radially formed around the compression collar 6 of the pipe socket 5 in that the pipe socket 5 is not pulled out of the stepped bore 9 of the connection sleeve 8, since the inner diameter 21 of the supernatant 18 is now smaller than the outer diameter 22 of the compression collar 6 of the pipe socket 5.
- the arranged in the annular space 10 between compression collar 6 of the pipe socket 5 and the shoulder 17 of the stepped bore 9 of the connecting sleeve 8 Abdichtring 16 is only radially clamped and seals the pipe socket 5 only radially against the connection sleeve 8 safely. LIST OF REFERENCE NUMBERS
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
Beschreibung description
Nicht lösbare RohrleitungsverbindungNon-detachable pipe connection
Die Erfindung betrifft eine Rohrleitung mit zwei in einer lötlosen Verbindungsstelle miteinander fest verbundenen Rohrleitungsabschnitten oder mit einem Rohrleitungsabschnitt, der mit einem den Anschluss an eine Schlauchleitung oder eine andere Rohrleitung vermittelnden rohrförmigen Nippel bzw. Rohrstutzen fest verbunden ist, nach den Merkmalen des Oberbegriffs des Patentanspruchs.The invention relates to a pipeline having two fixedly connected in a solderless connection pipe sections or with a pipe section which is firmly connected to a connection to a hose or other pipeline mediating tubular nipple or pipe socket, according to the features of the preamble of the claim.
Es sind bereits lötlose Rohrverbindungen für Rohrenden bekannt, bei denen auf die zu verbindenden Rohre Metallringe aufgesetzt werden, die unter dem Druck einer Mutter sowohl gegen das Rohr als auch gegen die Verbindungs- oder Anschlussmuffe gepresst werden. Bei diesen Vorrichtungen besteht jedoch der Nachteil, dass bei jeder Verbindung die Mutter fest angezogen werden muss, was einerseits zu Verformungen des Rohres führen kann, andererseits kann sich diese Verbindung unbemerkt lösen. Der gleiche Nachteil trifft auch auf Rohrverbindungen zu, die statt der Metallringe zusammenpressbare ringförmige Weichstoffpakete aufweisen.There are already known solderless pipe connections for pipe ends, in which metal rings are placed on the pipes to be joined, which are pressed under the pressure of a nut against both the pipe and against the connection or connection sleeve. In these devices, however, there is the disadvantage that with each connection, the mother must be tightened, which on the one hand can lead to deformation of the pipe, on the other hand, this compound can solve unnoticed. The same disadvantage also applies to pipe connections which have compressible annular soft material packages instead of the metal rings.
Die DE 197 40 144 C2 beschreibt eine Verbindung eines Rohres mit einer Metallhülse, bei der die Bohrung auf ihrer Innenfläche abwechselnd ringförmige Vertiefungen und ringförmige vorstehende Stege aufweist und das in die Bohrung der Metallhülse eingeschobene Rohrende durch das Zusammenpressen der Hülse durch die Stege radial nach innen verformt wird. Die dadurch entstandene formschlüssige Verbindung hält das Rohr in der Metallhülse fest. Die Abdichtung erfolgt durch einen vorher in eine Nut der Hülse eingelegten O-Ring. Nachteilig an dieser Lösung ist einerseits, dass die Herstellung der Hülse aufgrund der Innengeometrie mit ihren Hinterschnitten aufwendig ist, zum anderen, dass sich bei der Verformung der Muffe der Rohrquerschnitt verringert. Aus der G 92 1 1 647 U1 ist eine nicht lösbare Rohrverbindung unter Einschluss eines O- förmigen Abdichtringes bekannt, der von einem schrägen Stauchbund eines in eine Stufenbohrung einer Anschlußmuffe eines Rohrleitungsabschnittes eingeschobenen Rohr- Stutzens gegen eine schräge Ringfläche der Stufenbohrung mit gleicher Winkellage ge- presst ist.DE 197 40 144 C2 describes a connection of a pipe with a metal sleeve, wherein the bore has on its inner surface alternately annular recesses and annular projecting webs and inserted into the bore of the metal sleeve tube end by the compression of the sleeve by the webs radially inwardly is deformed. The resulting positive connection keeps the tube in the metal sleeve. The seal is made by a previously inserted into a groove of the sleeve O-ring. A disadvantage of this solution is on the one hand, that the production of the sleeve is complicated due to the internal geometry with their undercuts, on the other hand, that decreases in the deformation of the sleeve of the pipe cross-section. From the G 92 1 1 647 U1 a non-detachable pipe connection including an O-shaped Abdichtringes is known, which of an oblique compression collar of an inserted into a stepped bore of a connecting sleeve of a pipe section pipe socket against an oblique annular surface of the stepped bore with the same angular position is pressed.
Eine feste, unlösbare Rohrverbindung wird dadurch erreicht, dass in fest verbundenem Zustand der Rohrleitung der Überstand der Anschlussmuffe um den Stauchbund des Rohrstutzens so radial nach innen herumgeformt ist, dass der Rohrstutzen nicht aus der Stufenbohrung der Anschlussmuffe herausziehbar ist, da der innere Durchmesser des Überstandes nun kleiner ist als der äußere Durchmesser des Stauchbundes des Rohrstutzens. Der in dem Ringraum zwischen Stauchbund des Rohrstutzens und der konischen Stufe der Stufenbohrung der Anschlussmuffe eingeklemmte bzw. axial gepresste Abdichtring dichtet den Rohrstutzen gegen die Anschlussmuffe ab.A solid, non-detachable pipe connection is achieved in that in the firmly connected state of the pipe, the projection of the connection sleeve around the compression collar of the pipe socket is formed radially inwardly around that the pipe socket is not pulled out of the stepped bore of the connection sleeve, since the inner diameter of the supernatant now smaller than the outer diameter of the compression collar of the pipe socket. The in the annular space between the compression collar of the pipe socket and the conical step of the stepped bore of the connection sleeve clamped or axially pressed sealing ring seals the pipe socket against the connection sleeve.
Der Abdichtring wird gegen die schräge Ringfläche der konischen Stufe der Stufenbohrung der Anschlussmuffe gepresst. Der schräg zur Rohrleitungsachse liegende, den Abdichtring aufnehmende Ringraum weist bei einer durch Medienkontakt möglichen Aufquel- lung des Abdichtringes keinen Ausweichraum mehr auf. Es besteht somit die Gefahr der Zerstörung des Abdichtringes. Durch die Winkel der beiden Ringraumecken kleiner als 90° wird der Abdichtring in die resultierenden Dreiecke gepresst und dort stärker verformt als in einem Ringraum mit nur rechten Winkeln. Die Gefahr einer Spaltextrusion ist dadurch extrem hoch.The sealing ring is pressed against the inclined annular surface of the conical step of the stepped bore of the connection sleeve. The annular space lying obliquely to the pipe axis and receiving the sealing ring has no escape space when the sealing ring has become open due to media contact. There is thus the risk of destruction of the sealing ring. Due to the angles of the two annular space corners smaller than 90 °, the sealing ring is pressed into the resulting triangles and deformed there more than in an annular space with only right angles. The risk of a split extrusion is extremely high.
Der Abdichtring wird durch den wird durch den in der Hydraulikleitung herrschenden Betriebsdruck in den Spalt der abzudichtenden Bauteile gezwängt. Reicht der Scherwiderstand des Abdichtringes nicht aus, so wandert das Dichtungsmaterial in den Spalt zwischen Innen- und Außenteil. Beide Bauteile sind mit einer Fertigungstoleranz behaftet, so dass an ihrer Verbindungsstelle abhängig von den Toleranzen der Bauteile ein Spalt entsteht. Der Abdichtring wird dort sehr bald extrem deformiert und weiter zerstört. Die dabei am Dichtkörper entstehende plastische Verformung wird mit fortlaufender Druckbeaufschlagung immer größer. Im Endstadium kommt es zum Ausfall der Dichtung, da durch die veränderten Spannungsverteilungen im Dichtkörper eine hinreichende Dichtfunktion nicht mehr gewährleistet ist.The sealing ring is forced through the pressure prevailing in the hydraulic line operating pressure in the gap of the components to be sealed. If the shear resistance of the sealing ring is insufficient, the sealing material migrates into the gap between the inner and outer part. Both components are subject to a manufacturing tolerance, so that at their junction depending on the tolerances of the components creates a gap. The sealing ring is there very soon extremely deformed and further destroyed. The case of the sealing body resulting plastic deformation is increasing with continuous pressurization. In the final stage it comes to the failure of the seal, as by the changed voltage distributions in the sealing body a sufficient sealing function is no longer guaranteed.
Der Erfindung liegt die Aufgabe zugrunde, eine feste und unlösbare Rohrverbindung der eingangs beschriebenen Art zu schaffen, bei der keine Verschraubungen oder thermische Fügeverfahren notwendig sind und eine Undefinierte Verpressung des Abdichtringes mit den Gefahren einer Zerstörung des Abdichtringes aufgrund auftretender Spaltextrusion minimiert ist.The invention has for its object to provide a solid and permanent pipe connection of the type described above, in which no screwing or thermal joining methods are necessary and an undefined compression of the Abdichtringes with the dangers of destruction of the Abdichtringes due to occurring gap extrusion is minimized.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Länge des Bereiches des Rohrstutzens zwischen seinem stirnseitigen Ende und dem Stauchbund größer ist als die Länge des zweiten Längenabschnittes der Stufenbohrung, so dass ein Ringraum zwischen dem Stauchbund des Rohrstutzens und des Absatzes zwischen zweitem und drittem Längenabschnitt gebildet ist, in dem der Abdichtring unter axialem Freiraum definiert axial uneingeklemmt angeordnet ist.The object is achieved in that the length of the region of the pipe socket between its front end and the compression collar is greater than the length of the second longitudinal section of the stepped bore, so that an annular space between the compression collar of the pipe socket and the shoulder formed between the second and third longitudinal section is, in which the sealing ring is defined axially defined unenclosed under axial clearance.
Die Abdichtung erfolgt lediglich durch eine radiale Verformung des Abdichtringes zwischen dem Außenumfang des Nippels bzw. Rohrstutzens und dem Innenumfang des unverformten dritten Längenabschnittes der Anschlussmuffe. Der Stauchbund des einge- schobenen Rohrstutzens ist von dem Boden einer Stufenbohrung der Anschlussmuffe im eingeschobenen Zustand beabstandet angeordnet. In diesem lichten Abstand ist der O- förmige Abdichtring so angeordnet, dass keine axialen Presskräfte auf diesen einwirken. Der Abdichtring wird lediglich radial gespannt und stellt so die Abdichtwirkung sicher.The sealing takes place only by a radial deformation of the Abdichtringes between the outer circumference of the nipple or pipe socket and the inner circumference of the undeformed third longitudinal portion of the connection sleeve. The compression collar of the inserted pipe socket is arranged at a distance from the bottom of a stepped bore of the connection sleeve in the inserted state. In this clearance, the O-shaped sealing ring is arranged so that no axial pressing forces act on this. The sealing ring is merely tensioned radially and thus ensures the sealing effect.
Der den Abdichtring aufnehmende Ringraum wird durch den Stauchbund und einen Absatz der Stufenbohrung in der Anschlussmuffe gebildet.The annular space receiving the sealing ring is formed by the compression collar and a shoulder of the stepped bore in the connection sleeve.
Diese Anordnung hat den Vorteil, dass der Nippel bzw. Rohrstutzen fest und unlösbar mit der Anschlussmuffe verbunden ist, wobei der Abdichtring keine Spaltextrusion erfährt. Der Sitz des Abdichtringes weist eine symmetrische Form eines Ringraumes auf.This arrangement has the advantage that the nipple or pipe socket is firmly and permanently connected to the connection sleeve, wherein the sealing ring experiences no gap extrusion. The seat of the Abdichtringes has a symmetrical shape of an annular space.
Beide Bauteilen lassen nach ihrer Verbindung zusammen einen definierten symmetrischen Ringraum entstehen, welcher den Abdichtring aufnimmt, der dort nur radial ver- presst wird und die Trennstelle diese beiden Bauteile radial abdichtet. Die Gefahr von zu Undichtigkeiten führenden Montagefehlern ist minimiert. Der Rohrstutzen erfährt beim Verpressen keine Durchmesserreduzierung, eine Verschraubung kann entfallen. Eine aufwendige Nut in der Bohrung der Anschlussmuffe zur Aufnahme eines Abdichtringes ist entbehrlich.After their connection, both components together create a defined symmetrical annular space which receives the sealing ring, which is pressed there only radially and the separation point radially seals these two components. The risk of leaks leading assembly errors is minimized. The pipe socket undergoes no diameter reduction during pressing, a screw connection can be omitted. An elaborate groove in the bore of the connection sleeve for receiving a Abdichtringes is unnecessary.
Auf diese Weise ist eine kompakte, schnelle und sichere, nahezu verschleissfreie Rohrverbindung erreichbar, die ohne thermische Verbindungsverfahren wie Löten auskommt und für Drücke bis über 400 bar einsetzbar ist.In this way, a compact, fast and safe, almost wear-free pipe connection can be achieved, which does not require thermal connection methods such as soldering and can be used for pressures up to over 400 bar.
Anhand der Zeichnung wird nachstehend ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigtReference to the drawings, an embodiment of the invention will be explained in more detail below. It shows
Fig. 1 eine Verbindungsstelle einer Rohrleitung, in der in das Ende eines Rohrleitungs- abschnittes ein Ende eines Rohrstutzens eingeschoben ist, wobei die beiden Teile noch nicht miteinander fest verbunden sind;Figure 1 is a connection point of a pipe in which in the end of a pipe section one end of a pipe socket is inserted, wherein the two parts are not yet firmly connected;
Fig. 2 die Rohrverbindung nach Fig.1 mit fest verbundenen Teilen.Fig. 2 shows the pipe connection of Figure 1 with firmly connected parts.
In Fig. 1 wird eine Verbindungsstelle einer Rohrleitung 3 dargestellt, in der die Enden eines Rohrleitungsabschnittes 4 und eines Rohrstutzen 5 ineinander gesteckt sind. Statt eines Rohrstutzens 5 kann auch ein rohrförmiger Nippel verbunden sein, der an seinem anderen Ende zur Aufnahme eines Schlauches ausgestaltet ist.In Fig. 1, a connection point of a pipe 3 is shown, in which the ends of a pipe section 4 and a pipe socket 5 are inserted into one another. Instead of a pipe socket 5, a tubular nipple may be connected, which is configured at its other end for receiving a hose.
Der Rohrstutzen 5 weist einen angestauchten, nach außen vorstehenden Stauchbund 6 auf, der vom stirnseitigen Ende 7 des Rohrstutzens 5 beabstandet ist.The pipe socket 5 has an upset, outwardly projecting compression collar 6, which is spaced from the front end 7 of the pipe socket 5.
Der Rohrleitungsabschnitt 4 weist eine Anschlussmuffe 8 auf, die von einer zentralen Stufenbohrung 9 koaxial durchdrungen ist. Die Stufenbohrung 9 weist einen ersten Längen- abschnitt mit einem Innendurchmesser 11 auf, der kleiner ist, als der Außendurchmesser 12 des Rohrstutzens 5. An diesen ersten Längenabschnitt anschließend weist die Stufenbohrung 9 einen zweiten Längenabschnitt mit einem zweiten Innendurchmesser 13 auf, der mit dem Außendurchmesser 12 des Rohrstutzens 5 korrespondiert und in den der Rohrstutzen 5 hineingeschoben ist. Zwischen dem ersten und zweiten Längenabschnitt ist durch den Durchmessersprung ein ringförmiger Absatz 17 vorhanden. Ein dritter Längenabschnitt der Stufenbohrung 9 weist einen Innendurchmesser 14 auf, der so bemessen ist, dass der Stauchbund 6 des Rohrstutzens 5 in diesen Innendurchmesser 14 im Umfang annähernd an der Bohrungsinnenwand dieses Längenabschnittes anliegend hinein- passt.The pipe section 4 has a connection sleeve 8, which is penetrated by a central stepped bore 9 coaxially. The stepped bore 9 has a first longitudinal section with an inner diameter 11 which is smaller than the outer diameter 12 of the pipe socket 5. At this first longitudinal section, the stepped bore 9 has a second longitudinal section with a second inner diameter 13, which is the outer diameter 12 of the pipe socket 5 corresponds and in which the pipe socket 5 is pushed. Is between the first and second length section by the diameter jump an annular shoulder 17 is present. A third longitudinal section of the stepped bore 9 has an inner diameter 14 which is dimensioned such that the compression collar 6 of the pipe socket 5 fits into this inner diameter 14 in the circumference approximately adjacent to the bore inner wall of this longitudinal section.
Zwischen zweitem und drittem Längenabschnitt der Stufenbohrung 9 ist durch den Durchmessersprung ein weiterer ringförmiger Absatz 15 vorhanden, der auch eine Ringfläche bildet.Between the second and third longitudinal section of the stepped bore 9, a further annular shoulder 15 is provided by the diameter jump, which also forms an annular surface.
Auf den Rohrstutzen 5 ist ein O-förmiger Abdichtring 16 vor dem Stauchbund 6 aufgeschoben. Der Rohrstutzen 5 ist so in die Stufenbohrung 9 der Anschlussmuffe 8 eingeschoben, dass das stirnseitige Ende 7 des Rohrstutzens 5 gegen den Absatz 17 zwischen erstem und zweitem Längenabschnitt der Stufenbohrung 9 anschlägt. Weil die Länge des Bereiches 19 des Rohrstutzens 5 zwischen seinem Ende 7 und dem Stauchbund 6 größer ist als die Länge des zweiten Längenabschnittes der Bohrung 9, liegt der Stauchbund 6 des Rohrstutzens 5 im gezeigten eingeschobenen Zustand beabstandet zum Absatz 15 der Anschlussmuffe 8, so dass ein Ringraum 10 zwischen dem Stauchbund 6 des Rohrstutzens 5 und des Absatzes 15 entsteht, in dem der Abdichtring 18 unter axialem Frei- räum definiert axial uneingeklemmt angeordnet ist, d.h. die Länge des Ringraumes 10 ist etwas größer als die Breite des Abdichtringes 16.On the pipe socket 5, an O-shaped sealing ring 16 is pushed in front of the compression collar 6. The pipe socket 5 is inserted into the stepped bore 9 of the connection sleeve 8, that the front end 7 of the pipe socket 5 abuts against the shoulder 17 between the first and second longitudinal section of the stepped bore 9. Because the length of the region 19 of the pipe socket 5 between its end 7 and the compression collar 6 is greater than the length of the second longitudinal section of the bore 9, the compression collar 6 of the pipe socket 5 is in the inserted state shown spaced from the shoulder 15 of the connection sleeve 8, so that an annular space 10 is formed between the compression collar 6 of the pipe socket 5 and the shoulder 15, in which the sealing ring 18 is arranged axially unclamped under axial free space, ie the length of the annular space 10 is slightly larger than the width of the Abdichtringes 16th
Die Anschlussmuffe 8 weist am freien Ende einen Überstand 18 auf, der bei vollständig eingeschobenem Rohrstutzen 5 über den Stauchbund 6 des Rohrstutzens 5 hinauskragt.The connection sleeve 8 has at the free end on a projection 18 which projects beyond the compression collar 6 of the pipe socket 5 at fully inserted pipe socket 5.
Fig. 2 zeigt die Rohrverbindung in fest verbundenem Zustand. Der Überstand 18 der Anschlussmuffe 8 ist um den Stauchbund 6 des Rohrstutzens 5 so radial nach innen herumgeformt, dass der Rohrstutzen 5 nicht aus der Stufenbohrung 9 der Anschlussmuffe 8 herausziehbar ist, da der innere Durchmesser 21 des Überstandes 18 nun kleiner ist als der äußere Durchmesser 22 des Stauchbundes 6 des Rohrstutzens 5. Der in dem Ringraum 10 zwischen Stauchbund 6 des Rohrstutzens 5 und des Absatzes 17 der Stufenbohrung 9 der Anschlussmuffe 8 angeordnete Abdichtring 16 ist nur radial eingeklemmt und dichtet den Rohrstutzen 5 lediglich radial gegen die Anschlussmuffe 8 sicher ab. BezugszeichenlisteFig. 2 shows the pipe connection in a firmly connected state. The projection 18 of the connection sleeve 8 is radially formed around the compression collar 6 of the pipe socket 5 in that the pipe socket 5 is not pulled out of the stepped bore 9 of the connection sleeve 8, since the inner diameter 21 of the supernatant 18 is now smaller than the outer diameter 22 of the compression collar 6 of the pipe socket 5. The arranged in the annular space 10 between compression collar 6 of the pipe socket 5 and the shoulder 17 of the stepped bore 9 of the connecting sleeve 8 Abdichtring 16 is only radially clamped and seals the pipe socket 5 only radially against the connection sleeve 8 safely. LIST OF REFERENCE NUMBERS
1 (frei)1 (free)
2 (frei) 3 Rohrleitung2 (free) 3 pipeline
4 Rohrleitungsabschnitt4 pipe section
5 Rohrstutzen5 pipe sockets
6 Stauchbund6 compression collar
7 Stirnseitiges Ende 8 Anschlussmuffe7 Front end 8 Connecting sleeve
9 Stufenbohrung9 step drilling
10 Ringraum10 annulus
1 1 Innendurchmesser erster Längenabschnitt1 1 inner diameter first length section
12 Außendurchmesser Rohrstutzen 13 Innendurchmesser zweiter Längenabschnitt12 outer diameter pipe socket 13 inner diameter second length section
14 Innendurchmesser dritter Längenabschnitt14 inner diameter third length section
15 Absatz zwischen zweitem und drittem Längenabschnitt15 paragraph between the second and third section
16 Abdichtring16 sealing ring
17 Absatz zwischen erstem und zweitem Längenabschnitt 18 Überstand17 paragraph between the first and second length 18 supernatant
19 Bereichslänge19 area length
20 (frei)20 (free)
21 Innerer Durchmesser verformter Überstand 1821 inner diameter deformed supernatant 18
22 Äußerer Durchmesser des Stauchbundes 6 22 Outer diameter of the compression collar 6
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008047003.1 | 2008-09-12 | ||
| DE200810047003 DE102008047003A1 (en) | 2008-09-12 | 2008-09-12 | Non-detachable pipe connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010028872A1 true WO2010028872A1 (en) | 2010-03-18 |
Family
ID=41110652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/057709 Ceased WO2010028872A1 (en) | 2008-09-12 | 2009-06-22 | Non-detachable conduit connection |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102008047003A1 (en) |
| WO (1) | WO2010028872A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011012376A1 (en) | 2011-02-24 | 2012-08-30 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Tube-tube assembly |
| US9976821B2 (en) * | 2014-01-20 | 2018-05-22 | Mahle International Gmbh | Pipe connection, in particular for a heat exchanger |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014218396A1 (en) * | 2013-10-14 | 2015-04-16 | Schaeffler Technologies Gmbh & Co. Kg | joint assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0276483A1 (en) * | 1987-01-23 | 1988-08-03 | Behr GmbH & Co. | Tube joint, especially for a flat tube evaporator |
| US6082333A (en) * | 1999-01-06 | 2000-07-04 | Siemens Automotive Corporation | Rotation limiting connections between cross-over tubes and fuel rails for internal combustion engines |
| EP1691124A2 (en) * | 2005-02-10 | 2006-08-16 | Itt Manufacturing Enterprises, Inc. | Fluid quick connect with a contamination cover |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9211647U1 (en) | 1992-08-29 | 1993-01-07 | Argus Verwaltungsgesellschaft Mbh, 7505 Ettlingen | Pipe with nipple |
| DE19740144C2 (en) | 1997-09-12 | 1999-12-02 | Parker Hannifin Gmbh | Connection of a metal tube with a metal sleeve, and method for producing the connection |
| JP2003130262A (en) * | 2001-10-25 | 2003-05-08 | Denso Corp | Pipe joint structure |
| US20070046026A1 (en) * | 2005-08-31 | 2007-03-01 | Wells Billy P | Tube-to-tube connection |
-
2008
- 2008-09-12 DE DE200810047003 patent/DE102008047003A1/en not_active Withdrawn
-
2009
- 2009-06-22 WO PCT/EP2009/057709 patent/WO2010028872A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0276483A1 (en) * | 1987-01-23 | 1988-08-03 | Behr GmbH & Co. | Tube joint, especially for a flat tube evaporator |
| US6082333A (en) * | 1999-01-06 | 2000-07-04 | Siemens Automotive Corporation | Rotation limiting connections between cross-over tubes and fuel rails for internal combustion engines |
| EP1691124A2 (en) * | 2005-02-10 | 2006-08-16 | Itt Manufacturing Enterprises, Inc. | Fluid quick connect with a contamination cover |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011012376A1 (en) | 2011-02-24 | 2012-08-30 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Tube-tube assembly |
| US9976821B2 (en) * | 2014-01-20 | 2018-05-22 | Mahle International Gmbh | Pipe connection, in particular for a heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008047003A1 (en) | 2010-03-18 |
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