EP0845092A1 - Systeme de raccordement haute pression - Google Patents

Systeme de raccordement haute pression

Info

Publication number
EP0845092A1
EP0845092A1 EP96931729A EP96931729A EP0845092A1 EP 0845092 A1 EP0845092 A1 EP 0845092A1 EP 96931729 A EP96931729 A EP 96931729A EP 96931729 A EP96931729 A EP 96931729A EP 0845092 A1 EP0845092 A1 EP 0845092A1
Authority
EP
European Patent Office
Prior art keywords
sealing ring
connection system
sealing
ring
sealing element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP96931729A
Other languages
German (de)
English (en)
Inventor
Manfred Fröhlich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from DE29513129U external-priority patent/DE29513129U1/de
Application filed by Individual filed Critical Individual
Publication of EP0845092A1 publication Critical patent/EP0845092A1/fr
Ceased legal-status Critical Current

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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/10—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/083—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping
    • F16L19/086—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping with additional sealing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00—Pipe joints or couplings
    • Y10S285/906—Equivalents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00—Pipe joints or couplings
    • Y10S285/915—Mastic

Definitions

  • the hydraulic high-pressure seal is to be brought about only by means of a surface seal between the outer cone surface of the molded sealing cone at the pipe end and the conical inner surface in the receiving body. This will hardly be tolerable, particularly in systems in which downtimes would cause very high costs.
  • a subsequent interchangeability of damaged sealing elements is almost impossible, since when the receptacle is tightened against the pipe end by means of a union nut, the non-cutting molded sealing cone at the pipe end is very likely to be deformed again, so that after loosening and re-tightening the pipe connection in the rarest of cases If the required high-pressure tightness is reached again, which may have existed when the pipe connection was first installed.
  • the object of the present invention is to create a connection system with the features of the type described at the outset, which combines the advantages of a system with a two-part ring with the improved sealing behavior of less rigid systems with the least possible technical changes, a subsequent one Interchangeability of damaged sealing elements is to be made possible, and which can in principle be used not only for pipe connections with cutting rings, but also for those with sealing cones.
  • this object is achieved in that the elastomer high-pressure seal has a first egg-elastomeric sealing element arranged between the end face of the receiving body and the sealing ring and a surface of the sealing ring and between a pipe or connecting pin
  • the end face of the sealing ring delimits the portion of the sealing ring which projects the most axially in the direction of the receiving body, so that no parts of the sealing ring protrude into the conical 24 ° recess of the receiving body.
  • Such embodiments can be used in particular in connection with special nozzles without a cone, which replace the conventional standardized receiving body according to DIN and can have, for example, a reduced tube insertion depth.
  • Such special nozzles can have a significantly greater mechanical stability than the standardized receptacle and are therefore particularly suitable for use in the event of extreme load changes in the high-pressure fluid system to be connected or at pressures well above the limit values prescribed by DIN. As a result, completely new areas of application for the connection system according to the invention can be opened up.
  • the sealing ring on its end face facing the receiving body has an approximately conically extending recess opening radially on the inside towards the receiving body, and that a sealing element with an approximately triangular cross section is provided adjacent to the conical recess , one outer surface of which rests on the pipe or connecting pin, and the other outer surface of which at least partially rests on the end face of the receiving body.
  • This embodiment has the advantage over the aforementioned that the conical recess on the sealing ring can be manufactured more easily, while the alternative embodiment, owing to its geometrical design, has a better hold on the Sealing element guaranteed on the sealing ring.
  • the circumferential paragraph i. w. tapered towards the receiving body preferably at an angle of approximately 24 °.
  • the conical part of the sealing element then takes over a mechanical guiding function.
  • considerably less sealing material is required on the first elastomeric sealing element in this way.
  • the tube or the connecting pin has a circumferential bead pointing radially outwards, which on the one hand acts as a stop for the union nut. ter, on the other hand acts as a stop for the sealing element.
  • the idea of the invention can also be used with these so-called sealing cone pipe connection systems in a similarly advantageous manner to the cutting seal systems described above. In particular 4ere is by the
  • FIG. 8 shows a longitudinal section as in FIG. 7, but with a one-piece sealing element on the sealing ring;
  • FIG. 2a A side view of the cutting ring 3 shown in FIG. 1 and the sealing ring 4 is shown on the left in FIG. 2a.
  • the right side of FIG. 2a shows a schematic longitudinal section through the two-part ring 3, 4, while FIG. 2b shows a top view of the sealing ring 4 according to FIG. 2a.
  • On the outer circumference of the sealing ring 4 are symmetrically distributed around the circumference, to the internal thread of the outer Throwing nut 2 from FIG. 1, matching external thread segments 20 made of elastomeric material, which can be vulcanized or glued to the sealing ring 4. This makes it possible to produce a bayonet-type screw connection between the sealing ring 4 and the union nut 2, which as
  • Fig. 3 shows an enlargement of the sectional view of elements of the connection system according to Fig. 1, namely the receiving body 1, the sealing ring 4 and the cutting ring 3 in the non-tightened, pre-assembled state.
  • the sealing ring 4 abuts with its end face 9 against the end face 8 of the receiving body 1, as a result of which the first elastomeric sealing element 5, which is chambered in a recess 25 in the end face 9 of the sealing ring 4, against the end face 8 of the receiving body, which acts as a sealing face 1 is pressed.
  • the second elastomeric sealing element 6 lies sealingly on the outer surface of the tube, not shown in FIG. 3.
  • the end face 14 of the cutting ring 3 no longer serves as a stop for the end face 13 of the sealing ring 4 'on the cutting ring side, which would come into contact with the end face 13 at most in the case of a very extreme overtightening, but the conical face 15 on Cutting ring 3 against which the inner edge 18 of the rear end face 13 runs.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Joints With Pressure Members (AREA)

Abstract

L'invention concerne un système de raccordement pour raccords vissés résistant à des pressions très élevées, comportant un élément de logement (1) normalisé, un écrou d'accouplement (2), un tuyau (7) et un anneau d'étanchéité (4). Ledit système est caractérisé en ce qu'un dispositif d'étanchéité élastomère haute pression est constitué par un premier élément d'étanchéité (5) élastomère, placé entre la face (8) de l'élément de logement (1) et l'anneau d'étanchéité (4), et par un deuxième élément d'étanchéité (6), placé entre une face de l'anneau d'étanchéité orientée vers le tuyau (7) et la paroi extérieure du tuyau ou de la tige de raccordement. En opérant seulement de légères modifications techniques, on peut ainsi obtenir un système qui combine les avantages d'un système annulaire en deux parties et les propriétés d'étanchéité améliorées de systèmes moins rigides, et qui permet le remplacement ultérieur d'éléments d'étanchéité endommagés. Ce système peut être utilisé aussi bien pour les raccordements de tuyaux à jonction à pénétration que pour les raccordements coniques d'étanchéité.
EP96931729A 1995-08-16 1996-07-31 Systeme de raccordement haute pression Ceased EP0845092A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE29513129U 1995-08-16
DE29513129U DE29513129U1 (de) 1995-08-16 1995-08-16 Hochdruckverbindungssystem
DE19541622 1995-11-08
DE19541622A DE19541622A1 (de) 1995-08-16 1995-11-08 Hochdruckverbindungssystem
PCT/DE1996/001419 WO1997007356A1 (fr) 1995-08-16 1996-07-31 Systeme de raccordement haute pression

Publications (1)

Publication Number Publication Date
EP0845092A1 true EP0845092A1 (fr) 1998-06-03

Family

ID=26020193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96931729A Ceased EP0845092A1 (fr) 1995-08-16 1996-07-31 Systeme de raccordement haute pression

Country Status (5)

Country Link
US (1) US5961160A (fr)
EP (1) EP0845092A1 (fr)
CN (1) CN1196784A (fr)
AU (1) AU7082396A (fr)
WO (1) WO1997007356A1 (fr)

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Also Published As

Publication number Publication date
CN1196784A (zh) 1998-10-21
US5961160A (en) 1999-10-05
WO1997007356A1 (fr) 1997-02-27
AU7082396A (en) 1997-03-12

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