WO2009062748A1 - Raccord, en particulier raccord pour tuyaux - Google Patents

Raccord, en particulier raccord pour tuyaux Download PDF

Info

Publication number
WO2009062748A1
WO2009062748A1 PCT/EP2008/009711 EP2008009711W WO2009062748A1 WO 2009062748 A1 WO2009062748 A1 WO 2009062748A1 EP 2008009711 W EP2008009711 W EP 2008009711W WO 2009062748 A1 WO2009062748 A1 WO 2009062748A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
coupling according
pieces
groove
shear
Prior art date
Application number
PCT/EP2008/009711
Other languages
German (de)
English (en)
Inventor
Bernd Füsser
Friedhelm Grabert
Original Assignee
Karl Hamacher 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 Karl Hamacher Gmbh filed Critical Karl Hamacher Gmbh
Publication of WO2009062748A1 publication Critical patent/WO2009062748A1/fr

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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
    • F16L37/14—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
    • F16L37/142—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially
    • F16L37/148—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially the securing element being flexible

Definitions

  • the invention relates to a coupling, in particular pipe coupling for high-pressure pipes or high-pressure hoses, each with provided at ends to be connected couplings, and with at least one shearing element for coupling the coupling pieces, wherein the shearing element is received in a groove composed of two groove halves.
  • the shearing element is a flexible connecting element which is composed of cylinders, ball bodies or the like, in particular made of steel or iron, arranged next to one another.
  • the known shear element is surrounded by an elastic, tubular casing and has an overall asymmetric cross section. This is to improve corrosion resistance in the known embodiment and facilitate assembly.
  • the invention is based on the technical problem of such a coupling, in particular pipe coupling for high pressure pipes or high pressure hoses, so continue to develop that the assembly and disassembly succeeds easily, especially if the two coupling pieces are coupled together by a sleeve or a similar intermediate piece.
  • the invention proposes in a generic coupling, that at least one half of the half Nuthhopn is equipped with an additional alternative area.
  • the shearing element is rotationally symmetrical in cross section.
  • the outer half of the half describes that half of the half which, viewed radially from the center of a coupling or a coupling center axis, forms with the inner half of the groove the composite groove for receiving the shear element.
  • the coupling is rotationally symmetrical overall, so that the coupling center axis coincides with the axis of rotation.
  • the escape area is triangular in cross section, with the apex of the triangular cross section routinely facing inwardly, whereas a base of the triangle is outwardly disposed relative to the associated half half receiving element.
  • This element is either the respective coupling piece and / or an intermediate piece or a sleeve which couples the two coupling pieces together (with the interposition of the shear element). It has been proven to define the respective half-half by cold forming in the associated coupling piece and / or in the already mentioned intermediate piece.
  • the escape area can be attached alternatively or additionally borrow by cold forming in the coupling piece and / or the intermediate piece.
  • the invention preferably recommends rolling, pressing or even rolling.
  • the individual processes can be carried out on an entire pipe, namely at the ends, if the coupling is designed as a pipe coupling for high-pressure pipes.
  • the coupling is used to connect high-pressure hoses, the described cold-forming process naturally takes place only in the area of the coupling pieces.
  • the coupling or pipe coupling is made entirely of a metal. Since in the present case the high pressure area is to be covered, ie pressures of more than 20 bar (2 MPa), it is recommended to work at this point with a metal having a yield strength of more than 200 N / mm 2 . Instead of the yield strength but also the 0.2% - yield strength can be specified, which is located in comparable orders of magnitude. In any case, mainly high-strength steels are used as materials. Preferably even metals with a yield strength of more than 300 N / mm 2 .
  • At least one seal is provided in the respective coupling piece and / or the intermediate piece or the sleeve.
  • This seal may be an O-ring seal, which is at least slightly squeezed with mounted couplings or mounted couplings and sleeve applied in order to apply the necessary sealing forces can.
  • a particularly inexpensive coupling in particular pipe coupling for high-pressure pipes or high-pressure hoses can be realized according to the invention, which can be easily assembled and disassembled. That can be in the Trace core on the rotationally symmetric shear element, which is received in a correspondingly shaped and composed of the two Nuthpathn groove.
  • disassembly is made particularly easy by removing the corresponding coupling piece or removing the sleeve by pushing it. This is possible even when the shearing element has "set" by the high pressures that occur (more than 20 bar, usually even more than 30 bar or even more than 50 or 100 bar) and is slightly tilted.
  • the coupling can be implemented regularly without the inner and / or outer diameter of the high-pressure pipes or high-pressure hoses in the clutch area growing excessively.
  • the inner diameter and / or the outer diameter of a pipeline designed with the couplings according to the invention is also practically constant in the coupling region.
  • the coupling described is particularly suitable for the guidance of media under high pressure, in particular in the course of the hydraulic supply of machinery and here preferably underground. Because in this application, the installation space is limited and it depends on a particularly compact and non-bulky design.
  • the coupling pieces are or can be interconnected with the interposition of a spring element.
  • This spring element is usually designed as a spring ring, which - like the clutch as a whole - advantageous rotationally symmetrical to the matching axis of rotation or Center axis is executed. It has proven particularly useful when the spring element also acts as a sealing element. Because in such a case, the spring element or sealing element at the same time ensures that an end-side gap between the coupling pieces is closed to the outside. As a result, water, dirt, etc. can not penetrate into the area of the shear element via the gap, thus facilitating assembly / disassembly - even after years or under difficult environmental conditions.
  • the bias applied in this way in the operating position of the coupling ensures that the two coupling pieces tend to be forced apart. Forces in the same direction act on the coupling as soon as a fluid or generally a fluid medium under high pressure through associated high pressure pipes or high pressure hoses is transported. Even if there is no pressure so is the bias of the spring element and ensures the forces described.
  • Fig. 4 shows the region of the groove with the shearing element in detail
  • Fig. 5 shows a fourth embodiment.
  • a tubular coupling which serves in the present case as a pipe coupling for the connection of in particular in Figs. 2, 3 and 5 to recognize high-pressure pipes 1.
  • high-pressure hoses can also be connected to one another by means of the coupling or pipe coupling to be described in detail below.
  • Such couplings or pipe couplings are used, for example, in underground operation, where it comes to providing a hydraulic medium under high pressure (more than 20 bar) for the local longwall construction available.
  • the coupling is used to supply machines with a medium under high pressure.
  • the machines are preferably hydraulic machines. These can be used underground but also above ground.
  • the medium passed through constitutes a hydraulic medium which is under high pressure (more than 20 bar, in particular more than 50 bar, preferably more than 100 bar).
  • the coupling is equipped with coupling pieces 2, 3 at the respective ends of the high-pressure pipes 1 or the high-pressure hoses to be connected.
  • a supplementary intermediate piece 4 or an additional coupling sleeve 4 on.
  • This intermediate piece or the coupling sleeve 4 engages over the coupling pieces 2, 3 at least end in the context of the embodiment of FIG. 1 or is overlapped by the coupling pieces 2, 3 in the variant of FIG. 3 itself.
  • the coupling sleeve 4 according to FIGS.
  • a respective shear element 5 is provided.
  • the shearing element 5 serves to couple the coupling pieces 2, 3 and is located in the interior of the coupling, as it were, between the two coupling pieces 2, 3 (see FIGS. 2 and 5), respectively between the coupling pieces 2, 3 and the intermediate piece 4 (see FIG 1 and 3).
  • the shearing element 5 is received in a groove 6a, 6b composed of two half-halves 6a, 6b.
  • the shear element 5 in turn is one that may be made in two parts and has a flexible core and threaded on the soul rigid shear body.
  • the shear body and thus the shearing element 5 are able to accommodate large shear forces, at the same time the required flexibility is ensured.
  • the soul can be executed as a wire core made of steel or even plastic.
  • the shear body like the coupling pieces 2, 3 - from a high strength metal having a yield strength greater than 200 N / mm 2 , preferably more than 300 N / mm 2 , are prepared.
  • the shearing element 5 is rotationally symmetrical. This essentially also applies to the groove 6a, 6b composed of the two groove halves 6a, 6b. It is understood that the groove 6a, 6b of their size and cross-sectional shape is adapted to the shear body or the shear element 5 ago.
  • the dargillon coupling is also configured rotationally symmetrical compared to a central axis or axis of rotation M.
  • one half half 6a is located radially inward, while the other half half 6b is arranged radially on the outside.
  • the radially outer half half 6b is equipped with an evading region 7.
  • the radially inner half half 6a also has an escape region T.
  • the escape region 7 has a substantially triangular design in cross section. It can be seen, in particular with reference to FIG.
  • the tip 7a of the triangular deflection region 7 is formed on the one hand by the outer wall 8 and on the other hand by a tangent with respect to the shearing element 5 received in the groove 6a, 6b.
  • the outer wall 8 can be found in the variant according to FIGS. 1, 2 and 5 in a coupling piece 2, 3, while it is arranged in the context of the embodiment of FIG. 3 in the intermediate piece or the coupling sleeve 4. It can be seen that the avoidance region 7 is realized on only one half half 6b, namely on the half half 6b, which is arranged radially outward compared to the center line M. In this case, the escape area 7 can advantageously be defined by cold forming in the coupling piece 2, 3 (compare FIGS.
  • the respective coupling piece 2, 3 can be connected to the tubes 1, respectively, the pipe hoses, not shown, by any type of connection.
  • the coupling pieces 2, 3 are welded to the associated tubes 1.
  • a screw is conceivable.
  • the metal for the production of the coupling piece 2, 3, as well as the intermediate piece 4 and the coupling sleeve 4 and also the shear body, is one which, due to its yield strength, can absorb the occurring pressures of the hydraulic medium transported therein.
  • the invention recommends at this point to use a metal with a yield strength of more than 200 N / mm 2 or even one with a yield strength of more than 300 N / mm 2 .
  • two shearing elements 5 are used, which are received in associated grooves 6a, 6b.
  • the two shearing elements 5 and the two grooves 6a, 6b are each mirror-symmetrical in comparison to a dividing plane T, which divides the connecting region between the two pipes respectively high-pressure pipes 1.
  • one or more seals 9 are realized, which are arranged in the frame according to the variant according to FIGS. 1 and 3 respectively in the intermediate piece and the coupling sleeve 4.
  • the respective seals 9 are slightly squeezed in all configurations in order to apply the necessary sealing forces can. This is indicated by FIG. 4.
  • the seals 9 are regularly O-ring seals made of rubber or rubber-elastic material.
  • the coupling is constructed extremely narrow construction, and in particular not provided with expansive clamping rings, clamping screws, etc. Rather, it has more or less smooth outer surfaces and thus give no starting points for damage. Because the actual connecting element in the form of one or more shear elements 5 is protected inside either between the two coupling pieces 2 or 3 according to the variants of FIGS. 2 and 5 added or with the help of the intermediate piece respectively the coupling sleeve 4 according to the variant of FIG 1 covered. In the embodiment according to FIG. 3, the shearing element 5 is covered towards the interior of the tube by the coupling sleeve 4, whereas protection against the outside by the two coupling elements is ensured. pieces 2, 3 takes place, which engage over the associated shear element 5. In the embodiment according to FIG. 1, the procedure is reversed.
  • a chamfer or several chamfers 10 which open outwards with respect to the element receiving them.
  • this element is in each case the coupling piece 2, respectively 2, 3, which has the outer half half 6b with the escape area 7.
  • the chamfer 10 in question is placed opposite the shearing area 7 as compared to the shearing element 5 and the escape area 7.
  • the chamfer 10 is in contrast in the coupling sleeve 4th
  • Both the chamfer 10 and in particular the escape area 7 facilitate, in conjunction with the rotationally symmetrical structure of the shear element 5 in combination with the associated groove 6a, 6b, the assembly and disassembly of the coupling described.
  • the coupling pieces 2, 3 can either slide over the coupling sleeve 4 and withdraw therefrom, corresponding to the variant according to FIG. 3, or a coupling or decoupling directly corresponding to the configuration according to FIGS. 2 and 5.
  • FIG. 1 allows a simplified attachment and removal of the coupling sleeve 4.
  • the evasion region 7 possibly in conjunction with the chamfer 10, ensures that the coupling can be safely disassembled even with a slightly tilted shear element 5.
  • This assembly and disassembly is in the context of the variant of FIG. 5 additionally facilitated by the fact that the two coupling pieces 2, 3 are interconnected with the interposition of a spring element 11.
  • This spring element 11 is presently formed at the same time as a sealing element 11 and closes an end gap 12 between the two coupling pieces 2, 3 to the outside.
  • the spring element 11 is constructed as a rotationally symmetrical ring made of, for example, plastic or other suitable material. Also material combinations are conceivable.
  • the spring element 11 ensures that the clutch in the illustrated operating position of FIG. 5 and the individual coupling pieces 2, 3 are held under tension. This bias leads to the fact that the two coupling pieces 2, 3 are acted upon in opposite directions with respect to a dividing plane S or pressed apart. This is indicated by two arrows in FIG. 5.
  • the shear element 5 For the assembly of the shear element 5, it is now necessary to move the two coupling pieces 2, 3 towards each other, wherein the bias of the spring element 11 must be overcome. As a result of this reduced spacing of the two coupling pieces 2, 3, the two escape regions 7 move towards each other at the half-half 6b and T on the half-half 6a, so that the composite groove 6a, 7 1 ; 6b, 7 in this mounting position has a cross section which is greater than that of the shear element. 5 is designed. As a result, the shear element 5 can be easily assembled and disassembled in this mounting position.
  • the spring element 11 ensures that the shearing element 5 in the two half-halves 6a, 7 '; 6b, 7 is wedged. Because the two escape areas 7, T are opposite with respect to the shear element 5. This also applies to contact surfaces 13 in the two Nuthproblemn 6a, 6b, to which the shear element 5 rests by the built-up of the spring element 11 bias.

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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

L'invention concerne un raccord, notamment un raccord pour des tuyaux à haute pression (1) ou des tuyaux souples à haute pression. Ce raccord comporte des éléments d'accouplement (2, 3) situés aux extrémités à relier et au moins un élément de cisaillement (5) pour le couplage des éléments d'accouplement, l'élément de cisaillement (5) étant reçu dans une rainure composée de deux moitiés de rainure (6a, 6b). Selon l'invention, au moins une moitié de rainure (6b) de la rainure composée (6a, 6b) est pourvue d'une zone de dégagement supplémentaire (7).
PCT/EP2008/009711 2007-11-16 2008-11-17 Raccord, en particulier raccord pour tuyaux WO2009062748A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007055247.7 2007-11-16
DE102007055247 2007-11-16
DE102008009524A DE102008009524A1 (de) 2007-11-16 2008-02-16 Kupplung, insbesondere Rohrkupplung
DE102008009524.9 2008-02-16

Publications (1)

Publication Number Publication Date
WO2009062748A1 true WO2009062748A1 (fr) 2009-05-22

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ID=40560868

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/009711 WO2009062748A1 (fr) 2007-11-16 2008-11-17 Raccord, en particulier raccord pour tuyaux

Country Status (2)

Country Link
DE (1) DE102008009524A1 (fr)
WO (1) WO2009062748A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013102274U1 (de) 2013-05-24 2013-06-06 Hochdrucktechnik Füsser GmbH Kupplung, insbesondere Rohrkupplung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2577145A4 (fr) * 2010-06-04 2017-04-26 Australasian Steel Products Pty Ltd Élément de cisaillement pour raccordement
DE102018101163B4 (de) 2018-01-19 2022-03-31 Röhrenwerk Kupferdreh Carl Hamm GmbH Rohrkupplungssystem

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7341019U (de) * 1975-05-28 Wanit Gmbh & Co Kg Verbindungselement für eine schubgesicherte Rohrverbindung
US4570980A (en) * 1982-06-07 1986-02-18 Btr Plc Staple coupling
US5149148A (en) * 1991-08-13 1992-09-22 Fmc Corporation Pipe swivel joint with improved bore seal
US5255945A (en) * 1991-12-02 1993-10-26 Solinst Canada Limited End-to-end jointing system for tubes and pipes
US20030234536A1 (en) * 2002-06-20 2003-12-25 Riedy Charles H. Bell and spigot joint with locking strap
DE102005001993A1 (de) * 2005-01-15 2006-07-27 Röhrenwerk Kupferdreh Carl Hamm GmbH Steckmuffenrohrverbindung für insbesondere Steigleitungsrohre
WO2007105245A1 (fr) * 2006-03-15 2007-09-20 Pentair International Sarl Système permettant le blocage réciproque d'éléments mécaniques définissant un compartiment sous pression
EP1865244A2 (fr) * 2006-06-08 2007-12-12 Karl Hamacher GmbH Raccord, notamment raccord de tuyaux ou de conduites haute pression

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7341019U (de) * 1975-05-28 Wanit Gmbh & Co Kg Verbindungselement für eine schubgesicherte Rohrverbindung
US4570980A (en) * 1982-06-07 1986-02-18 Btr Plc Staple coupling
US5149148A (en) * 1991-08-13 1992-09-22 Fmc Corporation Pipe swivel joint with improved bore seal
US5255945A (en) * 1991-12-02 1993-10-26 Solinst Canada Limited End-to-end jointing system for tubes and pipes
US20030234536A1 (en) * 2002-06-20 2003-12-25 Riedy Charles H. Bell and spigot joint with locking strap
DE102005001993A1 (de) * 2005-01-15 2006-07-27 Röhrenwerk Kupferdreh Carl Hamm GmbH Steckmuffenrohrverbindung für insbesondere Steigleitungsrohre
WO2007105245A1 (fr) * 2006-03-15 2007-09-20 Pentair International Sarl Système permettant le blocage réciproque d'éléments mécaniques définissant un compartiment sous pression
EP1865244A2 (fr) * 2006-06-08 2007-12-12 Karl Hamacher GmbH Raccord, notamment raccord de tuyaux ou de conduites haute pression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013102274U1 (de) 2013-05-24 2013-06-06 Hochdrucktechnik Füsser GmbH Kupplung, insbesondere Rohrkupplung

Also Published As

Publication number Publication date
DE102008009524A1 (de) 2009-05-20

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