WO2008058597A1 - Coupling apparatus - Google Patents

Coupling apparatus Download PDF

Info

Publication number
WO2008058597A1
WO2008058597A1 PCT/EP2007/008609 EP2007008609W WO2008058597A1 WO 2008058597 A1 WO2008058597 A1 WO 2008058597A1 EP 2007008609 W EP2007008609 W EP 2007008609W WO 2008058597 A1 WO2008058597 A1 WO 2008058597A1
Authority
WO
WIPO (PCT)
Prior art keywords
flange
seal
coupling device
sealing
extension
Prior art date
Application number
PCT/EP2007/008609
Other languages
German (de)
French (fr)
Inventor
Knut Herges
Ralf Wnuk
Original Assignee
Hydac Process Technology Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hydac Process Technology Gmbh filed Critical Hydac Process Technology Gmbh
Publication of WO2008058597A1 publication Critical patent/WO2008058597A1/en

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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • 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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • F16L23/028—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder
    • F16L23/0283—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder the collar being integral with the pipe
    • 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
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • 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
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
    • F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
    • 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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/086—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe fixed with screws

Definitions

  • the invention relates to a coupling device which has for a connection between tubular or tubular conduits forming a passage for a medium connecting body on one line and a flange disposed on the other end of the flange, which by anchor bolts which are anchored to the connector body with this is braced, wherein between flange and connecting body, a seal assembly is provided with a radial seal which is disposed between an annular surface on the flange and an annular body located on the terminal surface, which form concentric sealing surfaces.
  • Coupling devices of this type are known. Although such coupling devices are characterized by a relatively simple design and ease of assembly, because during assembly, the radial seal in the form of one or more sealing rings may be fixed to the associated annular surface, so that when bringing together
  • the object of the invention is to provide a coupling device of the type in question, which enables a reliable connection in lines which carry pressure media with a high pressure level.
  • a significant feature of the invention is that a second seal arrangement with at least one axial seal is present at a spatial distance from the seal having a radial seal.
  • a second seal arrangement with at least one axial seal is present at a spatial distance from the seal having a radial seal.
  • the arrangement is such that the flange forms at its end associated with the connecting body an end face which extends in the direction of the flange longitudinal axis normal radial plane from the circular peripheral edge of the flange up to a longitudinal axis coaxial extension thereof ben, wherein first sealing arrangement on the extension and the second sealing arrangement are located on the end face.
  • first sealing arrangement on the extension and the second sealing arrangement are located on the end face.
  • the arrangement can be advantageously made so that the end face of the flange is clamped against a parallel to its end face of the connecting body, which latter forms a sealing surface for a sealing ring for the second seal assembly, which sits in a machined in the end face of the flange and groove seals against the face of the terminal body serving as the second sealing surface.
  • the arrangement can furthermore be made such that a recess, which receives the extension of the flange and is coaxial with the longitudinal axis, is provided on the connection body, which on the inside forms the one annular surface which serves as the one sealing surface for the first sealing arrangement.
  • this annular surface on the inside of the recess can be formed on the recordable in the recess of the connecting body extension as a flange-side sealing surface of the first seal assembly sealing annular surface on which seals a radial seal forming sealing ring.
  • a particularly simple assembly allows an embodiment in which the formation of the flange-side annular surface in the outer periphery of the extension, a radially recessed annular groove is incorporated for serving as a radial seal seal.
  • the radial seal for the assembly process is particularly reliable secured to the extension of the flange.
  • the measured width in the axial direction of the annular groove of the extension is sized larger than the axial dimension of the sealing ring.
  • the axial length of the extension of the flange is slightly smaller than the axial length of the recess of the connector body, so as to ensure that when tightening the flange on the connector body, only the end faces of flange and connector body are supported against each other.
  • FIG. 1 is a perspective oblique view of an embodiment of the coupling device according to the invention and Fig. 2 shows a comparison with FIG. 1 enlarged and slightly simplified simplified drawn longitudinal section of the embodiment according to the section line A-A of Fig. 1st
  • the illustrated in the drawing embodiment of the coupling device according to the invention is provided for the connection of lines that carry a pressure medium, such as a hydraulic fluid.
  • a metallic first line is denoted by 1
  • a flange 3 is located, which has a circular peripheral edge 5.
  • the connectable via the coupling device with the first line 1 second line, which is not shown in the drawing, is screwed at its coupling end with a metallic connector body 7.
  • This has the form of a hollow cylinder on the whole, which is provided for this screw with an external hexagon 9.
  • a concentric to the longitudinal axis 1 passage 13 corresponds in its dimensions to the inner diameter of the line to be connected 1.
  • End bil- det the connector body 7 has an end face 15 in a normal to the axis 1 1 radial plane.
  • a clamping ring 17, are anchored in the clamping screws 19 with their shafts, is screwed onto the connector body 7 so that it forms with its end face 21 a co-planar continuation of the end face 15 to the outside.
  • clamping screws 19 are based with their provided with hexagon screw heads 23 on clamping jaws 25 which are formed as a metallic forging or pressing semi-annular, each jaw 25 is penetrated at each end of a clamping screw 19, so that four clamping screws 19 as Clamping device are available.
  • Each jaw 25 has on its radially inner side a step surface 27 which engages over the flange 3 of the line 1 from the peripheral edge 5 ago.
  • a flange-side end face 29 which extends radially inward from the peripheral edge 5, up to a circular cylindrical extension 31 which projects concentrically to the axis 1 1 axially.
  • the extension 31 extends into a coaxial depression 33, which forms an extension of the passage 13 in the connection body 7.
  • the axial length of the extension 31 is slightly smaller than the axial depth of the recess 33, so that the end of the extension 31, when the coupling device is assembled, as shown in the figures, at a small distance from the bottom 35 of the recess 33 is located.
  • the recess 31 forms with its inner side, ie with the wall, which adjoins the radially inner end of the end face 15, an annular surface 37 as the one sealing surface of a radial seal assembly 39, the second sealing surface by a radially recessed into the extension 31 incorporated Ring groove 41 is formed, in which a sealing ring 43 is received.
  • a second sealing arrangement in the form of an axial sealing arrangement designated by 45 is arranged such that it seals the flange-side end face. che 29 seals against the end face 15 on the connector body 7 when flange 3 and connector body 7 are clamped together, as shown in the figures.
  • annular groove 47 for a sealing ring 49 serving as an axial seal is incorporated into the flange-side end face 29 in the central region between peripheral edge 5 and extension 31, which is compressed axially in the assembled state and thus under sealing force on the end face 15 is applied.
  • the sealing ring 43 of the radial seal assembly 39 is also dimensioned in relation to the depth of the annular groove 41 so that it rests with radial sealing force on the annular surface 37 and the bottom of the annular groove 41.
  • the axial length of the annular groove 41 is dimensioned such that under pressure loading of the sealing ring 43, wherein pressure medium from the end of the extension 31 passes through the gap between the outside of the extension 31 and inside of the recess 33 into the annular groove 41, the sealing ring 43 against the flange 3 adjacent end of the annular groove 41 moves and is pressed under deformation to the transition gap between the annular groove 41 and the inside of the recess 33.
  • the sealing rings used are made of an elastomeric material and are designed in the manner of O-rings.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)

Abstract

A coupling apparatus which, for a connection between hose-like or tubular lines (1), has a connecting body (7) which forms a passage (13) for a medium on one line and a flange (3) which is arranged at the end of the other line (1) and can be clamped to the connecting body (7) by clamping screws (19) which are anchored on the connecting body (7), wherein there is a seal arrangement (39) having a radial seal (43) between the flange (3) and the connecting body (7), which radial seal (43) is arranged between an annular face (41) on the flange (3) and an annular face (37) which is situated on the connecting body (7), which annular faces (41, 37) form sealing faces which are concentric with respect to one another, is characterized in that there is a second seal arrangement (45) between the flange (3) and the connecting body (7), which second seal arrangement (45) is situated at a spatial distance from the first seal arrangement (39) and has at least one axial seal (49).

Description

Hydac Process Technology GmbH, Industriegebiet, 66280 Sulzbach/Saar Hydac Process Technology GmbH, industrial area, 66280 Sulzbach / Saar
Kupplungsvorrichtungcoupling device
Die Erfindung betrifft eine Kupplungsvorrichtung, die für eine Verbindung zwischen schlauch- oder rohrförmigen Leitungen einen einen Durchlass für ein Medium bildenden Anschlußkörper an der einen Leitung und einen an der anderen Leitung endseitig angeordneten Flansch aufweist, der durch Spannschrauben, die am Anschlußkörper verankert sind, mit diesem verspannbar ist, wobei zwischen Flansch und Anschlußkörper eine Dichtungsanordnung mit einer Radialdichtung vorhanden ist, die zwischen einer Ringfläche am Flansch und einer am Anschlußkörper befindlichen Ringfläche angeordnet ist, die zueinander konzentrische Dichtflächen bilden.The invention relates to a coupling device which has for a connection between tubular or tubular conduits forming a passage for a medium connecting body on one line and a flange disposed on the other end of the flange, which by anchor bolts which are anchored to the connector body with this is braced, wherein between flange and connecting body, a seal assembly is provided with a radial seal which is disposed between an annular surface on the flange and an annular body located on the terminal surface, which form concentric sealing surfaces.
Kupplungsvorrichtungen dieser Art sind bekannt. Zwar zeichnen sich solche Kupplungsvorrichtungen durch eine verhältnismäßig einfache Bauweise und durch Montagefreundlichkeit aus, weil beim Zusammenbau die Radialdichtung in Form eines oder mehrerer Dichtringe an der zugehörigen Ringfläche festgelegt sein kann, so dass beim Zusammenbringen vonCoupling devices of this type are known. Although such coupling devices are characterized by a relatively simple design and ease of assembly, because during assembly, the radial seal in the form of one or more sealing rings may be fixed to the associated annular surface, so that when bringing together
Flansch und Anschlußkörper die richtige Positionierung der Radialdichtung ohne weiteres sichergestellt ist. Derartige Kupplungsvorrichtungen sind jedoch lediglich für Leitungen geeignet, die Medien mit geringem Druckniveau führen. So offenbart beispielsweise die US-Patentschrift Nr. 3,764,170 eine derartige Kupplungsvorrichtung für Wellenleiterrohre, also Metallrohre, die kein unter Druck stehendes Medium führen, sondern ein elektroma- gnetisches Feld begrenzen und elektromagnetische Energie weiterleiten. Bei Leitungen für Druckmedien ergeben sich bei derartigen Kupplungsvorrichtungen jedoch Abdichtprobleme.Flange and connector body the correct positioning of the radial seal is readily ensured. However, such coupling devices are only suitable for lines that carry low-pressure media. For example, US Pat. No. 3,764,170 discloses such a coupling device for waveguide tubes, that is to say metal tubes which do not conduct a pressurized medium, but rather an electromagazine. limit the field and transmit electromagnetic energy. In lines for printing media arise in such coupling devices, however, sealing problems.
Im Hinblick hierauf stellt sich die Erfindung die Aufgabe, eine Kupplungsvorrichtung der betrachteten Art zur Verfügung zu stellen, die eine betriebssichere Verbindung bei Leitungen ermöglicht, die Druckmedien mit einem hohen Druckniveau führen.In view of this, the object of the invention is to provide a coupling device of the type in question, which enables a reliable connection in lines which carry pressure media with a high pressure level.
Erfind u ngs gemäß ist diese Aufgabe durch eine Kupplungsvorrichtung gelöst, die die Merkmale des Patentanspruches 1 in seiner Gesamtheit aufweist.According to uigs according to this object is achieved by a coupling device having the features of claim 1 in its entirety.
Danach besteht eine wesentliche Besonderheit der Erfindung darin, dass in einem räumlichen Abstand von der eine Radialdichtung aufweisenden Dichtungsanordnung eine zweite Dichtungsanordnung mit zumindest einer Axialdichtung vorhanden ist. Wie sich gezeigt hat, ermöglicht die Kombination aus Radial- und Axialdichtung, in Verbindung mit deren voneinander räumlich getrennter Anordnung, eine besonders betriebssichere Abdichtung selbst bei hohem Druckniveau.Thereafter, a significant feature of the invention is that a second seal arrangement with at least one axial seal is present at a spatial distance from the seal having a radial seal. As has been shown, the combination of radial and axial seal, in conjunction with their spatially separated arrangement allows a particularly reliable sealing even at high pressure levels.
Vorzugsweise ist die Anordnung so getroffen, dass der Flansch an seinem dem Anschlußkörper zugeordneten Ende eine Stirnfläche bildet, die sich in zur Flansch-Längsachse normaler Radialebene vom kreisrunden Umfangs- rand des Flansches bis zu einem zur Längsachse koaxialen Fortsatz dessel- ben erstreckt, wobei die erste Dichtungsanordnung am Fortsatz und die zweite Dichtungsanordnung an der Stirnfläche gelegen sind. Bei solcher Lagebeziehung zwischen Radialdichtung und Axialdichtung ist letztere, da sie sich an der Stirnfläche am Umfangsbereich des Flansches befindet, zur Außenseite der Kupplungsvorrichtung nächstgelegen, während die Radial- dichtung, sozusagen vorgeschaltet, vom Druckmedium unmittelbar beaufschlagt ist. Die Axialdichtung braucht somit lediglich etwaige, an der Radialdichtung gegebenenfalls auftretende Leck- oder Verlustmengen zur Au- ßenseite abzudichten, wobei aufgrund der räumlichen Trennung und des dazwischen liegenden Pfades, der durch solche etwaige Fehlmengen zu überwinden ist, eine geringere Belastung der Axialdichtung gegeben ist.Preferably, the arrangement is such that the flange forms at its end associated with the connecting body an end face which extends in the direction of the flange longitudinal axis normal radial plane from the circular peripheral edge of the flange up to a longitudinal axis coaxial extension thereof ben, wherein first sealing arrangement on the extension and the second sealing arrangement are located on the end face. In such a positional relationship between radial seal and axial seal, the latter, since it is located on the end face on the peripheral region of the flange, nearest to the outside of the coupling device, while the radial seal, so to speak upstream, is acted upon directly by the pressure medium. The axial seal thus only needs any leakage or loss quantities which may occur at the radial seal for ßenseite seal, due to the spatial separation and the intermediate path, which is overcome by such any shortfalls, a lower load on the axial seal is given.
Hierbei kann die Anordnung vorteilhaft so getroffen sein, dass die Stirnfläche des Flansches gegen eine zu ihr parallele Stirnfläche des Anschlußkörpers spannbar ist, welche letztere für die zweite Dichtungsanordnung eine Dichtfläche für einen Dichtring bildet, der in einer in die Stirnfläche des Flansches eingearbeiteten Ringnut sitzt und gegen die als zweite Dichtflä- che dienende Stirnfläche des Anschlußkörpers abdichtet.Here, the arrangement can be advantageously made so that the end face of the flange is clamped against a parallel to its end face of the connecting body, which latter forms a sealing surface for a sealing ring for the second seal assembly, which sits in a machined in the end face of the flange and groove seals against the face of the terminal body serving as the second sealing surface.
Hierbei kann die Anordnung weiterhin so getroffen sein, dass am Anschlußkörper eine den Fortsatz des Flansches aufnehmende, zur Längsachse koaxiale Vertiefung vorgesehen ist, die innenseitig die eine Ringfläche bil- det, die als die eine Dichtfläche für die erste Dichtungsanordnung dient.In this case, the arrangement can furthermore be made such that a recess, which receives the extension of the flange and is coaxial with the longitudinal axis, is provided on the connection body, which on the inside forms the one annular surface which serves as the one sealing surface for the first sealing arrangement.
Für die Zusammenwirkung mit dieser Ringfläche an der Innenseite der Vertiefung kann an dem in der Vertiefung des Anschlußkörpers aufnehmbaren Fortsatz die als flanschseitige Dichtfläche der ersten Dichtungsanordnung dichtende Ringfläche ausgebildet sein, an der ein eine Radialdichtung bildender Dichtring abdichtet.For the interaction with this annular surface on the inside of the recess can be formed on the recordable in the recess of the connecting body extension as a flange-side sealing surface of the first seal assembly sealing annular surface on which seals a radial seal forming sealing ring.
Eine besonders einfache Montage ermöglicht ein Ausführungsbeispiel, bei dem zur Bildung der flanschseitigen Ringfläche in den Außenumfang des Fortsatzes eine radial vertiefte Ringnut für den als Radialdichtung dienenden Dichtring eingearbeitet ist. Dadurch ist die Radialdichtung für den Montagevorgang besonders zuverlässig am Fortsatz des Flansches gesichert.A particularly simple assembly allows an embodiment in which the formation of the flange-side annular surface in the outer periphery of the extension, a radially recessed annular groove is incorporated for serving as a radial seal seal. As a result, the radial seal for the assembly process is particularly reliable secured to the extension of the flange.
Bei besonders vorteilhaften Ausführungsbeispielen ist die in Axialrichtung gemessene Breite der Ringnut des Fortsatzes größer bemessen als die axiale Abmessung des Dichtringes. Dadurch steht für den die Radialdichtung bildenden Dichtring ein geringfügiger axialer Arbeits- oder Verformungsspiel- räum zur Verfügung, so dass bei der vom Ende des Fortsatzes her an der Ringnut anstehenden Druckbelastung der Dichtring an den Spaltbereich an der Übergangsstelle zwischen dem der Stirnfläche benachbarten Ende der Ringnut und der Ringfläche der Vertiefung anpressbar ist.In particularly advantageous embodiments, the measured width in the axial direction of the annular groove of the extension is sized larger than the axial dimension of the sealing ring. As a result, there is a slight axial working or deformation play for the sealing ring forming the radial seal. cavities available, so that in the pressure applied from the end of the extension forth at the annular groove pressure of the sealing ring to the gap region at the transition point between the end face adjacent the end of the annular groove and the annular surface of the recess can be pressed.
Vorzugsweise ist die axiale Länge des Fortsatzes des Flansches geringfügig kleiner als die axiale Länge der Vertiefung des Anschlußkörpers, so dass sichergestellt ist, dass beim Festspannen des Flansches am Anschlußkörper sich lediglich die Stirnflächen von Flansch und Anschlußkörper aneinander abstützen.Preferably, the axial length of the extension of the flange is slightly smaller than the axial length of the recess of the connector body, so as to ensure that when tightening the flange on the connector body, only the end faces of flange and connector body are supported against each other.
Nachstehend ist die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispieles im Einzelnen erläutert. Es zeigen:The invention with reference to an embodiment shown in the drawing will be explained in detail. Show it:
- Fig. 1 eine perspektivische Schrägansicht eines Ausführungsbeispieles der erfindungsgemäßen Kupplungsvorrichtung und Fig. 2 einen gegenüber Fig. 1 vergrößert und leicht schematisch vereinfacht gezeichneten Längsschnitt des Ausführungsbeispieles entsprechend der Schnittlinie A-A von Fig. 1.1 is a perspective oblique view of an embodiment of the coupling device according to the invention and Fig. 2 shows a comparison with FIG. 1 enlarged and slightly simplified simplified drawn longitudinal section of the embodiment according to the section line A-A of Fig. 1st
Das in der Zeichnung dargestellte Ausführungsbeispiel der erfindungsgemäßen Kupplungsvorrichtung ist für die Verbindung von Leitungen vorgesehen, die ein Druckmedium führen, beispielsweise eine Hydraulikflüssigkeit. Dabei ist eine metallische erste Leitung mit 1 bezeichnet, an der sich endseitig ein Flansch 3 befindet, der einen kreisrunden Umfangsrand 5 aufweist. Die über die Kupplungsvorrichtung mit der ersten Leitung 1 verbindbare zweite Leitung, die in der Zeichnung nicht dargestellt ist, ist an ihrem Kupplungsende mit einem metallischen Anschlußkörper 7 verschraubt. Dieser hat im großen Ganzen die Form eines Hohlzylinders, der für diese Verschraubung mit einem Außensechskant 9 versehen ist. Ein zur Längsachse 1 konzentrischer Durchlass 13 entspricht in seinen Abmessungen dem Innendurchmesser der anzuschließenden Leitung 1. Endseitig bil- det der Anschlusskörper 7 eine Stirnfläche 15 in einer zur Achse 1 1 normalen Radialebene. Ein Spannring 17, in dem Spannschrauben 19 mit ihren Schäften verankert sind, ist auf den Anschlußkörper 7 so aufgeschraubt, dass er mit seiner Endfläche 21 eine co-planare Fortsetzung der Stirnfläche 15 nach außen bildet.The illustrated in the drawing embodiment of the coupling device according to the invention is provided for the connection of lines that carry a pressure medium, such as a hydraulic fluid. In this case, a metallic first line is denoted by 1, at the end a flange 3 is located, which has a circular peripheral edge 5. The connectable via the coupling device with the first line 1 second line, which is not shown in the drawing, is screwed at its coupling end with a metallic connector body 7. This has the form of a hollow cylinder on the whole, which is provided for this screw with an external hexagon 9. A concentric to the longitudinal axis 1 passage 13 corresponds in its dimensions to the inner diameter of the line to be connected 1. End bil- det the connector body 7 has an end face 15 in a normal to the axis 1 1 radial plane. A clamping ring 17, are anchored in the clamping screws 19 with their shafts, is screwed onto the connector body 7 so that it forms with its end face 21 a co-planar continuation of the end face 15 to the outside.
Die Spannschrauben 19 stützen sich mit ihren mit Innensechskant versehenen Schraubenköpfen 23 an Spannbacken 25 ab, die als metallisches Schmiede- oder Pressteil halbringartig ausgebildet sind, wobei jede Spann- backe 25 an jedem Ende von einer Spannschraube 19 durchgriffen ist, so dass vier Spannschrauben 19 als Spanneinrichtung vorhanden sind. Jede Spannbacke 25 weist an ihrer radial innenliegenden Seite eine Stufenfläche 27 auf, die vom Umfangsrand 5 her den Flansch 3 der Leitung 1 übergreift.The clamping screws 19 are based with their provided with hexagon screw heads 23 on clamping jaws 25 which are formed as a metallic forging or pressing semi-annular, each jaw 25 is penetrated at each end of a clamping screw 19, so that four clamping screws 19 as Clamping device are available. Each jaw 25 has on its radially inner side a step surface 27 which engages over the flange 3 of the line 1 from the peripheral edge 5 ago.
An dem dem Anschlußkörper 7 zugekehrten Ende bildet der Flansch 3 eine flanschseitige Stirnfläche 29, die sich vom Umfangsrand 5 radial nach Innen erstreckt, und zwar bis zu einem kreiszylindrischen Fortsatz 31, der konzentrisch zur Achse 1 1 axial vorspringt. Der Fortsatz 31 erstreckt sich in eine koaxiale Vertiefung 33 hinein, die im Anschlußkörper 7 eine Erweite- rung des Durchlasses 13 bildet. Die axiale Länge des Fortsatzes 31 ist geringfügig kleiner als die axiale Tiefe der Vertiefung 33, so dass das Ende des Fortsatzes 31, wenn die Kupplungsvorrichtung zusammen gebaut ist, wie dies in den Figuren dargestellt ist, sich in einem geringen Abstand vom Grund 35 der Vertiefung 33 befindet.At the terminal body 7 facing the end of the flange 3 forms a flange-side end face 29, which extends radially inward from the peripheral edge 5, up to a circular cylindrical extension 31 which projects concentrically to the axis 1 1 axially. The extension 31 extends into a coaxial depression 33, which forms an extension of the passage 13 in the connection body 7. The axial length of the extension 31 is slightly smaller than the axial depth of the recess 33, so that the end of the extension 31, when the coupling device is assembled, as shown in the figures, at a small distance from the bottom 35 of the recess 33 is located.
Die Vertiefung 31 bildet mit ihrer Innenseite, d. h. mit der Wand, die sich an das radial innere Ende der Stirnfläche 15 anschließt, eine Ringfläche 37 als die eine Dichtfläche einer Radial-Dichtungsanordnung 39, deren zweite Dichtfläche durch eine in den Fortsatz 31 radial vertieft eingearbeitete Ringnut 41 gebildet ist, in der ein Dichtring 43 aufgenommen ist. Eine zweite Dichtungsanordnung in Form einer mit 45 bezeichneten Axial- Dichtungsanordnung ist so angeordnet, dass sie die flanschseitige Stirnflä- che 29 gegen die Stirnfläche 15 am Anschlußkörper 7 abdichtet, wenn Flansch 3 und Anschlußkörper 7 miteinander verspannt sind, wie es in den Figuren dargestellt ist. Zur Bildung dieser Axial-Dichtungsanordnung 45 ist in die flanschseitige Stirnfläche 29 im mittleren Bereich zwischen Umfangs- rand 5 und Fortsatz 31 eine Ringnut 47 für einen als Axialdichtung dienenden Dichtring 49 eingearbeitet, der beim Zusammenbauzustand axial zusammengedrückt ist und somit unter Dichtkraft an der Stirnfläche 15 anliegt.The recess 31 forms with its inner side, ie with the wall, which adjoins the radially inner end of the end face 15, an annular surface 37 as the one sealing surface of a radial seal assembly 39, the second sealing surface by a radially recessed into the extension 31 incorporated Ring groove 41 is formed, in which a sealing ring 43 is received. A second sealing arrangement in the form of an axial sealing arrangement designated by 45 is arranged such that it seals the flange-side end face. che 29 seals against the end face 15 on the connector body 7 when flange 3 and connector body 7 are clamped together, as shown in the figures. In order to form this axial sealing arrangement 45, an annular groove 47 for a sealing ring 49 serving as an axial seal is incorporated into the flange-side end face 29 in the central region between peripheral edge 5 and extension 31, which is compressed axially in the assembled state and thus under sealing force on the end face 15 is applied.
Der Dichtring 43 der Radial-Dichtungsanordnung 39 ist im Verhältnis zur Tiefe der Ringnut 41 ebenfalls so bemessen, dass er mit radialer Dichtkraft an der Ringfläche 37 und dem Grund der Ringnut 41 anliegt. Zusätzlich ist die axiale Länge der Ringnut 41 so bemessen, dass bei Druckbelastung des Dichtringes 43, wobei Druckmedium vom Ende des Fortsatzes 31 her durch den Spalt zwischen Außenseite des Fortsatzes 31 und Innenseite der Vertiefung 33 in die Ringnut 41 gelangt, sich der Dichtring 43 gegen das dem Flansch 3 benachbarte Ende der Ringnut 41 bewegt und unter Verformung an den Übergangsspalt zwischen Ringnut 41 und Innenseite der Vertiefung 33 angepresst wird.The sealing ring 43 of the radial seal assembly 39 is also dimensioned in relation to the depth of the annular groove 41 so that it rests with radial sealing force on the annular surface 37 and the bottom of the annular groove 41. In addition, the axial length of the annular groove 41 is dimensioned such that under pressure loading of the sealing ring 43, wherein pressure medium from the end of the extension 31 passes through the gap between the outside of the extension 31 and inside of the recess 33 into the annular groove 41, the sealing ring 43 against the flange 3 adjacent end of the annular groove 41 moves and is pressed under deformation to the transition gap between the annular groove 41 and the inside of the recess 33.
Im Ergebnis ergibt sich in Zusammenwirkung der Radial- Dichtungsanordnung 39 und der räumlich hierzu getrennten Axial- Dichtungsanordnung 45 eine besonders betriebssichere, druckfeste Abdichtung der erfindungsgemäßen Kupplungsvorrichtung. Dabei bestehen die eingesetzten Dichtringe aus einem Elastomermaterial und sind in der Art von O-Dichtringen ausgebildet.As a result, in cooperation with the radial sealing arrangement 39 and the spatially separate axial sealing arrangement 45, a particularly reliable, pressure-tight seal of the coupling device according to the invention results. In this case, the sealing rings used are made of an elastomeric material and are designed in the manner of O-rings.
Es sei noch bemerkt, dass anstelle einer Spanneinrichtung, bei der, wie gezeigt, gesonderte, halbringartige Spannbacken 25 vorgesehen sind, die in ihrem Zentralbereich axial vorspringende Höcker 51 als Schutzkörper für die benachbarten Schraubenköpfe 23 aufweisen, auch andere Spannwerk- zeuge vorgesehen sein könnten, beispielsweise in Form eines einteiligen Spannringes. It should also be noted that instead of a clamping device, in which, as shown, separate, semi-annular clamping jaws 25 are provided, which have in their central region axially projecting humps 51 as a protective body for the adjacent screw heads 23, other Spannwerk- could be provided, for example in the form of a one-piece clamping ring.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Kupplungsvorrichtung, die für eine Verbindung zwischen schlauch- oder rohrförmigen Leitungen (1) einen einen Durchlass (13) für ein Me- dium bildenden Anschlusskörper (7) an der einen Leitung und einen an der anderen Leitung (1) endseitig angeordneten Flansch (3) aufweist, der durch Spannschrauben (19), die am Anschlusskörper (7) verankert sind, mit diesem verspannbar ist, wobei zwischen Flansch (3) und Anschlusskörper (7) eine Dichtungsanordnung (39) mit einer Radialdichtung (43) vorhanden ist, die zwischen einer Ringfläche (41) am Flansch (3) und einer am Anschlusskörper (7) befindlichen Ringfläche (37) angeordnet ist, die zueinander konzentrische Dichtflächen bilden, dadurch gekennzeichnet, dass zwischen Flansch (3) und Anschlusskörper (7) eine von der ersten Dichtungsanordnung (39) in einem räumlichen Abstand befindliche zweite Dichtungsanordnung (45) vorhanden ist, die zumindest eine Axialdichtung (49) aufweist.1. Coupling device which, for a connection between tubular or tubular conduits (1), has a connection body (7) forming a passage (13) for a medium on one conduit and a flange (2) on the other conduit (1). 3), which is clamped by clamping screws (19) which are anchored to the connection body (7) with this, wherein between flange (3) and connecting body (7) has a sealing arrangement (39) with a radial seal (43) is present which is arranged between an annular surface (41) on the flange (3) and an annular body (37) on the connecting body (7), which form concentric sealing surfaces, characterized in that between the flange (3) and connecting body (7) one of first seal arrangement (39) is provided in a spaced spatial second seal assembly (45) having at least one axial seal (49).
2. Kupplungsvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der Flansch (3) an seinem dem Anschlusskörper (7) zugeordneten Ende eine Stirnfläche (29) bildet, die sich in zur Flansch-Längsachse (1 1) normaler Radialebene vom kreisrunden Umfangsrand (5) des Flansches (3) bis zu einem zur Längsachse (1 1) koaxialen Fortsatz (31) desselben erstreckt, wobei die erste Dichtungsanordnung (39) am Fortsatz (31) und die zweite Dichtungsanordnung (45) an der Stirnfläche (29) gelegen sind.2. Coupling device according to claim 1, characterized in that the flange (3) at its the connecting body (7) associated end forms an end face (29) extending in the flange longitudinal axis (1 1) normal radial plane from the circular peripheral edge (5 ) of the flange (3) extending to a longitudinal axis (1 1) coaxial extension (31) thereof, wherein the first seal assembly (39) on the extension (31) and the second seal assembly (45) on the end face (29) are located ,
3. Kupplungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Stirnfläche (29) des Flansches (3) gegen eine zu ihr parallele Stirnfläche (15) des Anschlusskörpers (7) spannbar ist, welche letztere für die zweite Dichtungsanordnung (45) eine Dichtfläche für einen Dichtring3. Coupling device according to claim 2, characterized in that the end face (29) of the flange (3) against a parallel to its end face (15) of the connection body (7) can be tensioned, which latter for the second sealing arrangement (45) has a sealing surface for a sealing ring
(49) bildet, der in einer in die Stirnfläche (29) des Flansches (3) eingear- beiteten Ringnut (47) sitzt und gegen die als zweite Dichtfläche dienende Stirnfläche (15) des Anschlußkörpers (7) abdichtet.(49) formed in a in the end face (29) of the flange (3) eingear- processed annular groove (47) sits and seals against the second sealing surface serving as end face (15) of the connecting body (7).
4. Kupplungsanordnung nach Anspruch 3, dadurch gekennzeichnet, dass am Anschlusskörper (7) eine den Fortsatz (31) des Flansches aufnehmende, zur Längsachse (1 1) koaxiale Vertiefung (33) vorgesehen ist, die innenseitig die eine Ringfläche (37) bildet, die als die eine Dichtfläche für die erste Dichtungsanordnung (39) dient.4. Coupling arrangement according to claim 3, characterized in that on the connection body (7) a projection (31) of the flange receiving, to the longitudinal axis (1 1) coaxial recess (33) is provided, which forms an annular surface (37) on the inside, which serves as the one sealing surface for the first sealing arrangement (39).
5. Kupplungsvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass an dem in der Vertiefung (33) des Anschlusskörpers (7) aufnehmbaren Fortsatz (31) die als flanschseitige Dichtfläche der ersten Dichtungsanordnung (39) dienende Ringfläche (41) ausgebildet ist, an der ein die Radialdichtung bildender Dichtring (43) abdichtet.5. Coupling device according to claim 4, characterized in that on the in the recess (33) of the connection body (7) receivable extension (31) as the flange-side sealing surface of the first seal assembly (39) serving annular surface (41) is formed on the one the radial seal sealing ring (43) seals.
6. Kupplungsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zur Bildung der flanschsseitigen Ringfläche in den Außenumfang des Fortsatzes (31) eine radial vertiefte Ringnut (41) für den als Radialdichtung dienenden Dichtring (43) eingearbeitet ist.6. Coupling device according to claim 5, characterized in that for forming the flange-side annular surface in the outer periphery of the extension (31) has a radially recessed annular groove (41) is incorporated for serving as a radial seal seal (43).
7. Kupplungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die in Axialrichtung gemessene Breite der Ringnut (41) des Fortsatzes (31) größer bemessen ist als die axiale Abmessung des Dichtringes (43).7. Coupling device according to claim 6, characterized in that the measured width in the axial direction of the annular groove (41) of the extension (31) is dimensioned larger than the axial dimension of the sealing ring (43).
8. Kupplungsvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die axiale Länge des Fortsatzes (31) des Flansches (3) geringfügig kleiner ist als die axiale Länge der Vertiefung (33) des Anschlusskörpers (7).8. Coupling device according to claim 7, characterized in that the axial length of the extension (31) of the flange (3) is slightly smaller than the axial length of the recess (33) of the connection body (7).
9. Kupplungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch ge- kennzeichnet, dass zum Verspannen von Flansch (3) und Anschlußkörper (7) zwei halbringartige, Umfangsbereiche des Flansches (3) übergreifende Spannbacken (25) vorgesehen sind, von denen jede Spann- backe (25) in beiden Endbereichen von einer Spannschraube (19) durchgriffen ist, deren Kopf (23) sich an der Spannbacke (25) abstützt und deren Schaft am Anschlußkörper (7) verankert ist. 9. Coupling device according to one of claims 1 to 8, characterized in that for bracing the flange (3) and connecting body (7) has two semi-annular, peripheral portions of the flange (3) cross-clamping jaws (25) are provided, each of which clamping - jaw (25) in both end regions of a clamping screw (19) is penetrated, the head (23) is supported on the clamping jaw (25) and whose shaft is anchored to the connector body (7).
PCT/EP2007/008609 2006-11-16 2007-10-04 Coupling apparatus WO2008058597A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610054038 DE102006054038A1 (en) 2006-11-16 2006-11-16 coupling device
DE102006054038.7 2006-11-16

Publications (1)

Publication Number Publication Date
WO2008058597A1 true WO2008058597A1 (en) 2008-05-22

Family

ID=38907364

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/008609 WO2008058597A1 (en) 2006-11-16 2007-10-04 Coupling apparatus

Country Status (2)

Country Link
DE (1) DE102006054038A1 (en)
WO (1) WO2008058597A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615613A (en) * 2013-12-13 2014-03-05 攀枝花钢城集团瑞钢工业有限公司 Combined flange structure
CN109027471A (en) * 2018-08-06 2018-12-18 上海时鉴工程技术有限公司 A kind of easy centering pressure-proof flange
CN109555921A (en) * 2017-09-25 2019-04-02 株洲中车时代电气股份有限公司 A kind of adjustable water pipe
CN111637295A (en) * 2020-04-30 2020-09-08 广州文冲船厂有限责任公司 Double-flange sealing type axial expansion joint

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764170A (en) * 1971-11-23 1973-10-09 Sola Basic Ind Inc Universal wave guide flange
US4874190A (en) * 1988-01-11 1989-10-17 Sundstrand Corporation Specialized hose connector for connecting hydraulic hoses and ports of different ratings
US6318768B1 (en) * 2000-05-01 2001-11-20 International Truck & Engine Corp Tubing coupler with primary and secondary sealing
US6382678B1 (en) * 1998-10-02 2002-05-07 Parker-Hannifin Corporation Coupling assembly
US20030214130A1 (en) * 2002-05-20 2003-11-20 Schroeder Fred Georg Air conditioning block fitting with two surface sealing
EP1548348A1 (en) * 2003-12-22 2005-06-29 Behr GmbH & Co. KG Sealing arrangement, in particular for a pipe connection to an expansion element
FR2873782A1 (en) * 2004-07-30 2006-02-03 Manuli Auto France Sa Watertight connector for coolant gas circuit, has nozzle having end equipped with sealing device that is inserted in groove separated from nozzle end by projecting part having plastic ring threaded on nozzle to form another groove
EP1719945A1 (en) * 2005-05-03 2006-11-08 Hutchinson High pressure coupling

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764170A (en) * 1971-11-23 1973-10-09 Sola Basic Ind Inc Universal wave guide flange
US4874190A (en) * 1988-01-11 1989-10-17 Sundstrand Corporation Specialized hose connector for connecting hydraulic hoses and ports of different ratings
US6382678B1 (en) * 1998-10-02 2002-05-07 Parker-Hannifin Corporation Coupling assembly
US6318768B1 (en) * 2000-05-01 2001-11-20 International Truck & Engine Corp Tubing coupler with primary and secondary sealing
US20030214130A1 (en) * 2002-05-20 2003-11-20 Schroeder Fred Georg Air conditioning block fitting with two surface sealing
EP1548348A1 (en) * 2003-12-22 2005-06-29 Behr GmbH & Co. KG Sealing arrangement, in particular for a pipe connection to an expansion element
FR2873782A1 (en) * 2004-07-30 2006-02-03 Manuli Auto France Sa Watertight connector for coolant gas circuit, has nozzle having end equipped with sealing device that is inserted in groove separated from nozzle end by projecting part having plastic ring threaded on nozzle to form another groove
EP1719945A1 (en) * 2005-05-03 2006-11-08 Hutchinson High pressure coupling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615613A (en) * 2013-12-13 2014-03-05 攀枝花钢城集团瑞钢工业有限公司 Combined flange structure
CN109555921A (en) * 2017-09-25 2019-04-02 株洲中车时代电气股份有限公司 A kind of adjustable water pipe
CN109027471A (en) * 2018-08-06 2018-12-18 上海时鉴工程技术有限公司 A kind of easy centering pressure-proof flange
CN111637295A (en) * 2020-04-30 2020-09-08 广州文冲船厂有限责任公司 Double-flange sealing type axial expansion joint

Also Published As

Publication number Publication date
DE102006054038A1 (en) 2008-05-29

Similar Documents

Publication Publication Date Title
DE60037440T2 (en) DEVICE FOR CONNECTING TUBULAR BODY
DE10261887A1 (en) pipe coupling
DE102009052674B4 (en) Method and device for connecting double-walled pipes
DE9216369U1 (en) Press tool
EP2933542B1 (en) Connection for corrugated pipes
DE1603694B2 (en) Hydraulic clamping device, especially a chuck or mandrel
DE19507854B4 (en) Multi-part sealing device
DE102021115904A1 (en) FLANGE CONNECTION ARRANGEMENT FOR A PIPE
WO2008058597A1 (en) Coupling apparatus
EP3073166B1 (en) Flange connection
WO2001006116A1 (en) Connection and housing for a fuel injection system with a high-pressure fuel accumulator
DE19507736B4 (en) sealing element
EP1509308A1 (en) Device for filtering fluids that are conveyed under a high pressure
EP1468216B1 (en) Sealing device
EP0824383B1 (en) Process and pressing tools for joining tubular elements
EP3683481B1 (en) Fitting and extension piece for pipelines
EP1783413A2 (en) Arrangement for connecting the ends of a metal pipe with helical corrugations with a connecting piece
WO2009062748A1 (en) Coupling, particularly a pipe coupling
EP0655558B1 (en) Pneumatic valve device with at least two fixed together subassemblies
DE19855795B4 (en) Cutting ring fitting for pressure medium piping
WO2018001592A1 (en) Slide ring seal arrangement with coated bellows unit
WO2018130463A1 (en) Eccentric screw pump
DE2617615A1 (en) PIPE COUPLING
DE202005016424U1 (en) Retainer ring for connecting press casing with fitting, has bar movable in radial direction and rotatable around axle between inner and outer parts and center part has spring units for elastic connection of bar with outer part
DE2803329A1 (en) Compensating connector for vehicle power transmission shaft - has bellows for axial pipe connection installed between tapered location flanges

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07818688

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07818688

Country of ref document: EP

Kind code of ref document: A1