EP1495251A1 - Sealing device for a high-pressure sealing of line junctions - Google Patents
Sealing device for a high-pressure sealing of line junctionsInfo
- Publication number
- EP1495251A1 EP1495251A1 EP03746224A EP03746224A EP1495251A1 EP 1495251 A1 EP1495251 A1 EP 1495251A1 EP 03746224 A EP03746224 A EP 03746224A EP 03746224 A EP03746224 A EP 03746224A EP 1495251 A1 EP1495251 A1 EP 1495251A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting edge
- sealing device
- edge
- protective
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 45
- 230000001681 protective effect Effects 0.000 claims abstract description 42
- 239000000446 fuel Substances 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
- F16L15/009—Screw-threaded joints; Forms of screw-threads for such joints with straight threads with axial sealings having at least one plastically deformable sealing surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
Definitions
- the present invention relates to a sealing device for high-pressure sealing of line transitions in fuel injection injectors.
- Fuel injection injectors are used, for example, in common rail injection systems in order to inject fuel under high pressure, which is fed to the injector from a store via a high-pressure line, into a combustion chamber. Due to the very high pressures, the individual components of the common rail
- a seal is made between the pressure pipe socket and the injector by means of an axially sealing soft iron disk.
- the soft iron disk is plastically deformed when the pressure pipe socket is fitted to the injector, in order to provide a seal between the two
- Allow sharing Another hydraulic sealing option, which, however, is not used in fuel injection injectors, is provided by a cutting edge formed on a component, which is plastically deformed when the component is screwed in, as a result of which the surfaces to be sealed can ideally adapt to one another and seal.
- this cutting edge is very sensitive to Damage such as can occur, for example, as a result of components striking against one another, for example during assembly or during production, when these are transported in bulk.
- the sealing device according to the invention for high-pressure sealing of line transitions comprises a cutting edge and a protective edge.
- the cutting edge is used to create a seal by means of plastic deformation, and both the cutting edge and the component opposite the cutting edge can be plastically deformed.
- the protective edge runs essentially parallel to the cutting edge and protrudes beyond the cutting edge in the axial direction of the line.
- the protruding protective edge provides protection for the cutting edge, since in the case of parts hitting one another the protective edge is hit first, which deforms instead of the cutting edge. This can prevent damage to the cutting edge from occurring, and thus an improved sealing property of the sealing device can be achieved.
- the protective edge is designed such that it can be easily deformed when the component is assembled, so that the actual sealing effect is always provided by the cutting edge of the sealing device. Since the protective edge protrudes axially over the cutting edge, the protective edge is axially deformed in such a way that the cutting edge comes into contact with the next component in order to produce the seal.
- a particularly inexpensive protection of a cutting edge providing a seal against damage can be achieved in a surprisingly simple manner, even for a person skilled in the art.
- a first depression or cutout is preferably formed between the cutting edge and the protective edge.
- L5 of the protective edge formed a second recess. This results in a neck-shaped constriction between the protective edge and the component, so that a light protective edge is provided which can only be deformed with little force.
- the cutouts are particularly preferably U-shaped in section, so that there are no abrupt transitions in the region between the cutting edge and the protective edge. This will ensure a safe deformation of the protective edge during
- the protective edge is preferably approximately twice as high in the axial direction as the cutting edge.
- the protective edge is particularly preferably arranged outside the cutting edge. According to another preferred embodiment, the protective edge is arranged within the cutting edge. A protective edge is also preferred both in arranged inside as well as outside of the cutting edge, which enables protection of the cutting edge on both sides.
- the sealing device according to the invention consisting of a cutting edge and a protective edge is particularly preferably arranged on a pressure pipe socket, which connects a fuel injector of a common rail system with a high pressure line.
- the sealing device according to the invention is preferably formed between the injector and the pressure pipe socket.
- Fig. 1 is a schematic sectional view of a pressure pipe socket with a sealing device according to an embodiment of the present invention
- FIG. 2 is an enlarged view of the detail X from FIG. 1.
- a pressure pipe socket 6 which has a sealing device 1 according to the invention at one of its ends in the axial direction 0-0.
- the pressure pipe socket 6 is used as an intermediate link between an injector of a fuel injection system and a high-pressure line. A fuel under high pressure is fed to the injector via this high-pressure line.
- the sealing device 1 is arranged at the end of the pressure pipe socket 6, which is attached to the injector.
- the sealing device 1 according to the invention is shown in detail in FIG. 2.
- the sealing device 1 comprises a cutting edge 2 and a protective edge 3.
- the cutting edge 2 is arranged approximately in the middle of the wall thickness of the pressure pipe socket 6 and slopes conically inwards to a high pressure line 7 formed in the pressure pipe socket 6.
- the protective channels te 3 is arranged on the outermost radial edge of the pressure pipe socket 6.
- a first recess 4 in the form of a groove is formed between the cutting edge 2 and the protective edge 3.
- a second recess 5 is formed on the cylindrical jacket area of the pressure pipe socket 6 and thus on the side of the protective edge 3 facing away from the cutting edge 2.
- the second recess 5 is arranged such that a constriction in the form of a neck 8 is formed between the first recess 4 and the second recess 5.
- the cutting edge 2 and the protective edge 3 are both ring-shaped, the protective edge 3 running parallel to the cutting edge 2. That is, the two edges 2, 3 are arranged like concentric circles.
- the cutting edge 2 has a height Hi in the direction of the axial direction 0-0 of the pressure pipe socket 6.
- the protective edge 3 has a height H 2 in the direction of the axial direction 0-0.
- the height H 2 is approximately twice the height Hi. This ensures that the protective edge 3 protrudes in the axial direction 0-0 by a predetermined amount in order to ensure adequate protection of the cutting edge 2.
- the protective edge 3 is first deformed, the protective edge 3 being easily deformable with a small force by forming the neck region 8 between the first and the second recess.
- the actual sealing edge of the sealing device 1 designed as a cutting edge 2 is released.
- the cutting edge 2 and the area opposite the cutting edge on the injector are plastically deformed, as a result of which the actual seal between the pressure pipe socket 6 and the injector is provided.
- the protective edge 3 is therefore not used for conventional sealing, but only to protect the cutting edge 2.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Gasket Seals (AREA)
Abstract
Description
Beschreibungdescription
Dichtungseinrichtung für eine Hochdruckabdichtung von LeitungsübergängenSealing device for high-pressure sealing of line transitions
Die vorliegende Erfindung betrifft eine Dichtungseinrichtung für eine Hochdruckabdichtung von Leitungsübergängen bei Kraftstoffeinspritzinjektoren.The present invention relates to a sealing device for high-pressure sealing of line transitions in fuel injection injectors.
Kraftstoffeinspritzinjektoren werden beispielsweise bei Com- mon-Rail-Einspritzsystemen verwendet, um unter hohem Druck stehenden Kraftstoff, der dem Injektor über eine Hochdruckleitung von einem Speicher zugeführt wird, in einen Brennraum einzuspritzen. Aufgrund der sehr hohen Drücke ergeben sich hierbei zwischen den einzelnen Bauteilen des Common-Rail-Fuel injection injectors are used, for example, in common rail injection systems in order to inject fuel under high pressure, which is fed to the injector from a store via a high-pressure line, into a combustion chamber. Due to the very high pressures, the individual components of the common rail
Systems häufig Dichtungsprobleme. Derartige Dichtungsprobleme sind jedoch in jedem Falle zu vermeiden, um einerseits Umweltschutzaspekte zu erfüllen und um andererseits zu verhindern, dass sich austretender Kraftstoff an heißen Bereichen im Motorraum entzünden kann. Von daher werden bei den bekannten Kraftstoffeinspritzinjektoren aufwändige Dichtungseinrichtungen verwendet.Systems often have sealing problems. Such sealing problems are to be avoided in any case, on the one hand to meet environmental protection aspects and on the other hand to prevent escaping fuel from igniting in hot areas in the engine compartment. Therefore, complex sealing devices are used in the known fuel injection injectors.
Beispielsweise erfolgt für eine Abdichtung eines Druckrohr- Stutzens, welcher als ein Zwischenglied zwischen dem Injektor und einer Hochdruckleitung verwendet wird, eine Abdichtung zwischen dem Druckrohrstutzen und dem Injektor mittels einer axial dichtenden Weicheisenscheibe. Die Weicheisenscheibe wird bei der Montage des Druckrohrstutzens an den Injektor plastisch verformt, um eine Abdichtung zwischen den beidenFor example, for a seal of a pressure pipe socket, which is used as an intermediate member between the injector and a high pressure line, a seal is made between the pressure pipe socket and the injector by means of an axially sealing soft iron disk. The soft iron disk is plastically deformed when the pressure pipe socket is fitted to the injector, in order to provide a seal between the two
Teilen zu ermöglichen. Eine andere hydraulische Abdichtungsmöglichkeit, welche jedoch nicht bei Kraftstoffeinspritzinjektoren verwendet wird, ist durch eine an einem Bauteil gebildete Schneidkante gegeben, welche beim Eindrehen des Bau- teils plastisch verformt wird, wodurch sich die abzudichtenden Flächen ideal aneinander anpassen und abdichten können. Diese Schneidkante ist jedoch sehr empfindlich gegenüber Be- Schädigungen, wie sie beispielsweise durch Aneinanderschlagen von Bauteilen, beispielsweise während der Montage oder während der Fertigung, wenn diese als Schüttgut befördert werden, auftreten können.Allow sharing. Another hydraulic sealing option, which, however, is not used in fuel injection injectors, is provided by a cutting edge formed on a component, which is plastically deformed when the component is screwed in, as a result of which the surfaces to be sealed can ideally adapt to one another and seal. However, this cutting edge is very sensitive to Damage such as can occur, for example, as a result of components striking against one another, for example during assembly or during production, when these are transported in bulk.
Es ist von daher Aufgabe der vorliegenden Erfindung, eine Dichtungseinrichtung für eine Hochdruckabdichtung von Leitungsübergängen, insbesondere bei Kraftstoffeinspritzsystemen, bereitzustellen, welche bei einfachem Aufbau und einfa- eher, kostengünstiger Herstellbarkeit eine Beschädigung der Schneidkante verhindern kann, so dass immer eine sichere Abdichtung gewährleistet ist.It is therefore an object of the present invention to provide a sealing device for high-pressure sealing of line transitions, in particular in fuel injection systems, which, with a simple construction and simple, inexpensive manufacture, can prevent damage to the cutting edge, so that a reliable seal is always guaranteed.
Diese Aufgabe wird durch eine Dichtungseinrichtung mit den Merkmalen des Anspruchs 1 gelöst. Die Unteransprüche zeigen vorteilhafte Weiterbildungen der Erfindung.This object is achieved by a sealing device with the features of claim 1. The subclaims show advantageous developments of the invention.
Die erfindungsgemäße Dichtungseinrichtung für eine Hochdruckabdichtung von Leitungsübergängen umfasst eine Schneidkante sowie eine Schutzkante. Die Schneidkante dient zur Erzeugung einer Abdichtung mittels plastischer Verformung, wobei sowohl die Schneidkante als auch das der Schneidkante entgegen gesetzte Bauteil plastisch verformt werden kann. Die Schutzkante verläuft im wesentlichen parallel zur Schneidkante und steht in axialer Richtung der Leitung über die Schneidkante vor. Dadurch bewirkt die vorstehende Schutzkante einen Schutz für die Schneidkante, da bei aufeinander schlagenden Teilen zuerst die Schutzkante getroffen wird, welche sich somit an Stelle der Schneidkante verformt. Dadurch kann verhindert werden, dass Beschädigungen der Schneidkante auftreten können, und damit kann eine verbesserte Dichtungseigenschaft der Dichtungseinrichtung erreicht werden. Die Schutzkante ist dabei derart ausgebildet, dass sie bei einer Montage des Bauteils leicht verformbar ist, so dass die eigentliche Dicht- Wirkung immer durch die Schneidkante der Dichtungseinrichtung bereitgestellt wird. Da die Schutzkante in axialer Richtung über die Schneidkante vorsteht, wird die Schutzkante in axia- ler Richtung derart verformt, dass die Schneidkante zur Herstellung der Abdichtung mit dem nächsten Bauteil in Kontakt kommt. Somit kann erfindungsgemäß auch für einen Fachmann in überraschend einfacher Weise ein besonders kostengünstiger 5 Schutz einer eine Dichtung bereitstellenden Schneidkante vor Beschädigungen erreicht werden.The sealing device according to the invention for high-pressure sealing of line transitions comprises a cutting edge and a protective edge. The cutting edge is used to create a seal by means of plastic deformation, and both the cutting edge and the component opposite the cutting edge can be plastically deformed. The protective edge runs essentially parallel to the cutting edge and protrudes beyond the cutting edge in the axial direction of the line. As a result, the protruding protective edge provides protection for the cutting edge, since in the case of parts hitting one another the protective edge is hit first, which deforms instead of the cutting edge. This can prevent damage to the cutting edge from occurring, and thus an improved sealing property of the sealing device can be achieved. The protective edge is designed such that it can be easily deformed when the component is assembled, so that the actual sealing effect is always provided by the cutting edge of the sealing device. Since the protective edge protrudes axially over the cutting edge, the protective edge is axially deformed in such a way that the cutting edge comes into contact with the next component in order to produce the seal. Thus, according to the invention, a particularly inexpensive protection of a cutting edge providing a seal against damage can be achieved in a surprisingly simple manner, even for a person skilled in the art.
Um eine besonders leichte Verformbarkeit der Schutzkante während der Montage zu ermöglichen, ist zwischen der Schneidkan- L0 te und der Schutzkante vorzugsweise eine erste Vertiefung bzw. Aussparung ausgebildet.In order to enable the protective edge to be deformed particularly easily during assembly, a first depression or cutout is preferably formed between the cutting edge and the protective edge.
Um eine noch bessere leichte Verformbarkeit der Schutzkante zu ermöglichen, ist an der der Schneidkante abgewandten SeiteIn order to enable the protective edge to be deformed even more easily, is on the side facing away from the cutting edge
L5 der Schutzkante eine zweite Aussparung ausgebildet. Dadurch ergibt sich zwischen der Schutzkante und dem Bauteil eine halsförmige Einschnürung, so dass eine leichte und nur unter geringer Krafteinwirkung verformbare Schutzkante bereitgestellt wird.L5 of the protective edge formed a second recess. This results in a neck-shaped constriction between the protective edge and the component, so that a light protective edge is provided which can only be deformed with little force.
2020
Besonders bevorzugt sind die Aussparungen im Schnitt U-förmig ausgebildet, so dass sich keine abrupten Übergänge im Bereich zwischen der Schneidkante und der Schutzkante ergeben. Dadurch wird eine sichere Verformung der Schutzkante währendThe cutouts are particularly preferably U-shaped in section, so that there are no abrupt transitions in the region between the cutting edge and the protective edge. This will ensure a safe deformation of the protective edge during
25 der Montage sichergestellt, um die Schneidkante freizugeben, ohne dass die Schutzkante beispielsweise abbrechen könnte und sich eine unerwünschte scharfkantige Bruchstelle ergeben könnte .25 of the assembly is ensured in order to release the cutting edge without the protective edge breaking off, for example, and an undesired sharp-edged break point being able to result.
30 Um einen sicheren Schutz der Schneidkante zu bewerkstelligen, ist die Schutzkante vorzugsweise ungefähr zweimal so hoch in Axialrichtung wie die Schneidkante.30 In order to ensure reliable protection of the cutting edge, the protective edge is preferably approximately twice as high in the axial direction as the cutting edge.
Besonders bevorzugt ist die Schutzkante außerhalb der 35 Schneidkante angeordnet. Gemäß einer anderen bevorzugten Ausgestaltung ist die Schutzkante innerhalb der Schneidkante angeordnet. Weiterhin bevorzugt ist eine Schutzkante sowohl in- nerhalb als auch außerhalb der Schneidkante angeordnet, was einen beidseitigen Schutz der Schneidkante ermöglicht.The protective edge is particularly preferably arranged outside the cutting edge. According to another preferred embodiment, the protective edge is arranged within the cutting edge. A protective edge is also preferred both in arranged inside as well as outside of the cutting edge, which enables protection of the cutting edge on both sides.
Die erfindungsgemäße Dichtungseinrichtung bestehend aus einer Schneidkante und einer Schutzkante ist besonders bevorzugt an einem Druckrohrstutzen angeordnet, welcher einen Kraftstoffinjektor eines Common-Rail-Systems mit einer Hochdruckleitung verbindet. Dabei ist die erfindungsgemäße Dichtungseinrichtung vorzugsweise zwischen dem Injektor und dem Druck- rohrstutzen ausgebildet.The sealing device according to the invention consisting of a cutting edge and a protective edge is particularly preferably arranged on a pressure pipe socket, which connects a fuel injector of a common rail system with a high pressure line. The sealing device according to the invention is preferably formed between the injector and the pressure pipe socket.
Nachfolgend wird die vorliegende Erfindung anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. In der Zeichnung ist:The present invention is described below on the basis of a preferred exemplary embodiment in conjunction with the drawing. In the drawing is:
Fig. 1 eine schematische Schnittansicht eines Druckrohrstutzens mit einer Dichtungseinrichtung gemäß einem Ausführungsbeispiel der vorliegenden Erfindung undFig. 1 is a schematic sectional view of a pressure pipe socket with a sealing device according to an embodiment of the present invention and
Fig. 2 eine vergrößerte Ansicht des Details X von Fig. 1.FIG. 2 is an enlarged view of the detail X from FIG. 1.
In Fig. 1 ist ein Druckrohrstutzen 6 dargestellt, welcher eine erfindungsgemäße Dichtungseinrichtung 1 an einem seiner Enden in Axialrichtung 0-0 aufweist. Der Druckrohrstutzen 6 wird als Zwischenglied zwischen einem Injektor eines Kraftstoffeinspritzsystems und einer Hochdruckleitung verwendet. Dem Injektor wird über diese Hochdruckleitung ein unter Hochdruck stehender Kraftstoff zugeführt. Die Dichtungseinrichtung 1 ist an dem Ende des Druckrohrstutzens 6 angeordnet, welches am Injektor befestigt wird.In Fig. 1, a pressure pipe socket 6 is shown, which has a sealing device 1 according to the invention at one of its ends in the axial direction 0-0. The pressure pipe socket 6 is used as an intermediate link between an injector of a fuel injection system and a high-pressure line. A fuel under high pressure is fed to the injector via this high-pressure line. The sealing device 1 is arranged at the end of the pressure pipe socket 6, which is attached to the injector.
Die erfindungsgemäße Dichtungseinrichtung 1 ist in Fig. 2 im Detail dargestellt. Die Dichtungseinrichtung 1 umfasst eine Schneidkante 2 und eine Schutzkante 3. Die Schneidkante 2 ist ungefähr in der Mitte der Wandstärke des Druckrohrstutzens 6 angeordnet und fällt nach innen zu einer im Druckrohrstutzen 6 ausgebildeten Hochdruckleitung 7 konisch ab. Die Schutzkan- te 3 ist am äußersten radialen Rand des Druckrohrstutzens 6 angeordnet. Zwischen der Schneidkante 2 und der Schutzkante 3 ist eine erste Aussparung 4 in Form einer Auskehlung ausgebildet. Eine zweite Aussparung 5 ist am zylindrischen Mantelbereich des Druckrohrstutzens 6 und somit an der von der Schneidkante 2 abgewandten Seite der Schutzkante 3 ausgebildet. Die zweite Aussparung 5 ist dabei derart angeordnet, dass zwischen der ersten Aussparung 4 und der zweiten Aussparung 5 eine Verengung in Form eines Halses 8 gebildet wird.The sealing device 1 according to the invention is shown in detail in FIG. 2. The sealing device 1 comprises a cutting edge 2 and a protective edge 3. The cutting edge 2 is arranged approximately in the middle of the wall thickness of the pressure pipe socket 6 and slopes conically inwards to a high pressure line 7 formed in the pressure pipe socket 6. The protective channels te 3 is arranged on the outermost radial edge of the pressure pipe socket 6. A first recess 4 in the form of a groove is formed between the cutting edge 2 and the protective edge 3. A second recess 5 is formed on the cylindrical jacket area of the pressure pipe socket 6 and thus on the side of the protective edge 3 facing away from the cutting edge 2. The second recess 5 is arranged such that a constriction in the form of a neck 8 is formed between the first recess 4 and the second recess 5.
Die Schneidkante 2 und die Schutzkante 3 sind beide ringförmig ausgebildet, wobei die Schutzkante 3 parallel zur Schneidkante 2 verläuft. D. h., die beiden Kanten 2, 3 sind wie konzentrische Kreise angeordnet.The cutting edge 2 and the protective edge 3 are both ring-shaped, the protective edge 3 running parallel to the cutting edge 2. That is, the two edges 2, 3 are arranged like concentric circles.
Wie weiter aus Fig. 2 ersichtlich ist, weist die Schneidkante 2 eine Höhe Hi in Richtung der Axialrichtung 0-0 des Druckrohrstutzens 6 auf. Die Schutzkante 3 weist eine Höhe H2 in Richtung der Axialrichtung 0-0 auf. Dabei ist die Höhe H2 un- gefähr doppelt so hoch wie die Höhe Hi. Dadurch wird sichergestellt, dass die Schutzkante 3 in Axialrichtung 0-0 um einen vorbestimmten Betrag vorsteht, um einen ausreichenden Schutz der Schneidkante 2 zu gewährleisten.As can further be seen from FIG. 2, the cutting edge 2 has a height Hi in the direction of the axial direction 0-0 of the pressure pipe socket 6. The protective edge 3 has a height H 2 in the direction of the axial direction 0-0. The height H 2 is approximately twice the height Hi. This ensures that the protective edge 3 protrudes in the axial direction 0-0 by a predetermined amount in order to ensure adequate protection of the cutting edge 2.
Wenn nun der Druckrohrstutzen 6 auf dem Injektor befestigt wird, erfolgt zuerst eine Verformung der Schutzkante 3, wobei die Schutzkante 3 durch Ausbildung des Halsbereiches 8 zwischen der ersten und der zweiten Aussparung mit einer geringen Krafteinwirkung leicht verformbar ist. Somit wird die als Schneidkante 2 ausgebildete eigentliche Dichtkante der Dichtungseinrichtung 1 freigegeben. Während der weiteren Montage des Druckrohrstutzens 6 erfolgt nun eine plastische Verformung der Schneidkante 2 und des der Schneidkante am Injektor entgegengesetzten Bereichs, wodurch die eigentliche Abdich- tung zwischen dem Druckrohrstutzen 6 und dem Injektor bereitgestellt wird. Die Schutzkante 3 dient somit nicht zur ei- gentlichen Abdichtung, sondern ausschließlich zum Schutz der Schneidkante 2.If the pressure pipe socket 6 is now attached to the injector, the protective edge 3 is first deformed, the protective edge 3 being easily deformable with a small force by forming the neck region 8 between the first and the second recess. Thus, the actual sealing edge of the sealing device 1, designed as a cutting edge 2, is released. During the further assembly of the pressure pipe socket 6, the cutting edge 2 and the area opposite the cutting edge on the injector are plastically deformed, as a result of which the actual seal between the pressure pipe socket 6 and the injector is provided. The protective edge 3 is therefore not used for conventional sealing, but only to protect the cutting edge 2.
Durch das Vorsehen der ersten und zweiten Aussparung 4, 5 ist bei der Montage des Druckrohrstutzens 6 weiter ein ausreichender Verformungsfreiraum bereitgestellt, in welchen die Schutzkante 3 bei der Montage gedrückt werden kann.By providing the first and second recesses 4, 5, sufficient pressure clearance is further provided during the assembly of the pressure pipe socket 6, into which the protective edge 3 can be pressed during assembly.
Die vorhergehende Beschreibung der Ausführungsbeispiele gemäß der vorliegenden Erfindung dient nur zu illustrativen Zwecken und nicht zum Zwecke der Beschränkung der Erfindung. Im Rahmen der Erfindung sind verschiedene Änderungen und Modifikationen möglich, ohne den Umfang der Erfindung sowie ihrer Ä- quivalente zu verlassen. The preceding description of the exemplary embodiments according to the present invention is only for illustrative purposes and not for the purpose of restricting the invention. Various changes and modifications are possible within the scope of the invention without departing from the scope of the invention and its equivalents.
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10216280A DE10216280A1 (en) | 2002-04-12 | 2002-04-12 | Sealing device for high-pressure sealing of line transitions |
| DE10216280 | 2002-04-12 | ||
| PCT/DE2003/001165 WO2003087645A1 (en) | 2002-04-12 | 2003-04-09 | Sealing device for a high-pressure sealing of line junctions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1495251A1 true EP1495251A1 (en) | 2005-01-12 |
Family
ID=28684987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03746224A Withdrawn EP1495251A1 (en) | 2002-04-12 | 2003-04-09 | Sealing device for a high-pressure sealing of line junctions |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7134698B2 (en) |
| EP (1) | EP1495251A1 (en) |
| JP (1) | JP2005527749A (en) |
| DE (1) | DE10216280A1 (en) |
| WO (1) | WO2003087645A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4100393B2 (en) * | 2004-10-29 | 2008-06-11 | 株式会社デンソー | Flow damper |
| WO2008034519A1 (en) | 2006-09-18 | 2008-03-27 | Robert Bosch Gmbh | Valve arrangement for a hydrostatic machine, in particular for an axial piston machine |
| DE102006049202A1 (en) * | 2006-10-18 | 2008-04-30 | Man Diesel Se | Sealing system for fuel injection device of common rail diesel internal-combustion engine, has casing protruding from recess in partly assembled condition, rests on surface of components, and deformed such that surfaces contact each other |
| US7603985B2 (en) * | 2007-01-25 | 2009-10-20 | Denso Corporation | Common rail |
| JP4558021B2 (en) * | 2007-09-06 | 2010-10-06 | 日立オートモティブシステムズ株式会社 | Fuel injection valve and method for supporting the same |
| US7628140B2 (en) * | 2007-09-27 | 2009-12-08 | Caterpillar Inc. | High-pressure pump or injector plug or guide with decoupled sealing land |
| DE102008018017B4 (en) * | 2008-04-09 | 2015-11-19 | Continental Automotive Gmbh | Sealing arrangement for a housing, pump and injection valve |
| US9228551B2 (en) | 2012-09-13 | 2016-01-05 | Caterpillar Inc. | Quill tube protection feature |
| US10352282B2 (en) * | 2015-09-01 | 2019-07-16 | Corey Jay COLVIN | Hydraulic union ball tube with leak diffusion |
| WO2017118776A1 (en) * | 2016-01-08 | 2017-07-13 | Wärtsilä Finland Oy | Pipe assembly and method for connecting pipe assembly |
| CN112145828B (en) * | 2020-09-09 | 2021-11-09 | 席赫 | Oil pipe joint for oil field |
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| US1098974A (en) * | 1914-06-02 | Lincoln L Reilly | Pipe-union. | |
| US648232A (en) * | 1899-08-25 | 1900-04-24 | Alfred Brandt | Pipe-joint. |
| US924039A (en) * | 1905-09-21 | 1909-06-08 | Economic Specialty Company | Pipe-fitting. |
| US1906826A (en) * | 1930-07-12 | 1933-05-02 | United Superior Union Company | Pipe coupling |
| US2258941A (en) * | 1939-05-19 | 1941-10-14 | Albert J Wayman | Double seal connector |
| US2330864A (en) * | 1942-09-18 | 1943-10-05 | Bruno Patents Inc | Coupling means for coaxial cable sections |
| US2731279A (en) * | 1950-09-14 | 1956-01-17 | Aeroquip Corp | Fitting for reinforced hose |
| DE884437C (en) * | 1951-12-29 | 1953-07-27 | Hans Kreidel Jun | Gasket made of steel with surface hardened, sealing cutting edges and method for producing such gaskets |
| US2780483A (en) * | 1953-03-30 | 1957-02-05 | Ladish Co | Sealed joint for pipes having conical tapered interfaces |
| US4262941A (en) * | 1979-09-06 | 1981-04-21 | Titeflex Corporation | Self-aligning tube fitting |
| US4484750A (en) * | 1982-07-01 | 1984-11-27 | Dresser Industries, Inc. | High pressure seal joint |
| US4838583A (en) * | 1982-08-23 | 1989-06-13 | Cajon Company | Fluid coupling |
| US5033435A (en) * | 1989-05-10 | 1991-07-23 | Navistar International Transportation Corp. | Fluid conduit system incorporating self-aligning fitting |
| US5131695A (en) * | 1991-03-13 | 1992-07-21 | Chatleff Controls, Inc. | Coupling with teflon seat |
| US5251941A (en) * | 1991-10-11 | 1993-10-12 | General Components, Inc. | Fail safe fitting with first and second flange projections |
| US5553902A (en) * | 1994-07-12 | 1996-09-10 | Powers; Patrick J. | Leak-proof coupling |
| US5695225A (en) * | 1995-05-08 | 1997-12-09 | Spinco Metal Products, Inc. | Reusable union coupling |
| US6805384B1 (en) * | 2002-08-14 | 2004-10-19 | Chatleff Controls, Inc. | Sealing mechanism |
-
2002
- 2002-04-12 DE DE10216280A patent/DE10216280A1/en not_active Ceased
-
2003
- 2003-04-09 EP EP03746224A patent/EP1495251A1/en not_active Withdrawn
- 2003-04-09 JP JP2003584559A patent/JP2005527749A/en active Pending
- 2003-04-09 WO PCT/DE2003/001165 patent/WO2003087645A1/en not_active Ceased
-
2004
- 2004-10-08 US US10/961,363 patent/US7134698B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03087645A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005527749A (en) | 2005-09-15 |
| US7134698B2 (en) | 2006-11-14 |
| US20050082823A1 (en) | 2005-04-21 |
| WO2003087645A1 (en) | 2003-10-23 |
| DE10216280A1 (en) | 2003-10-30 |
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