EP0595874A1 - Embout terminal pour tuyau souple et ensemble tuyau - Google Patents

Embout terminal pour tuyau souple et ensemble tuyau

Info

Publication number
EP0595874A1
EP0595874A1 EP92915350A EP92915350A EP0595874A1 EP 0595874 A1 EP0595874 A1 EP 0595874A1 EP 92915350 A EP92915350 A EP 92915350A EP 92915350 A EP92915350 A EP 92915350A EP 0595874 A1 EP0595874 A1 EP 0595874A1
Authority
EP
European Patent Office
Prior art keywords
hose
retainer ring
end fitting
hose end
facing surface
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Withdrawn
Application number
EP92915350A
Other languages
German (de)
English (en)
Inventor
John Stuart Williams
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.)
Dunlop Ltd
Original Assignee
Dunlop Ltd
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 Dunlop Ltd filed Critical Dunlop Ltd
Publication of EP0595874A1 publication Critical patent/EP0595874A1/fr
Withdrawn legal-status Critical Current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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/34—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with bonding obtained by vulcanisation, gluing, melting, or the like
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/01—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses adapted for hoses having a multi-layer wall

Definitions

  • This invention relates to a hose assembly and an end fitting for a hose assembly comprising an end fitting and a multi-layer, typically reinforced, hose.
  • the weight of end fittings can be considerable. Apart from being inconvenient when handling the hose assembly, the weight of the end fittings causes potential problems in the case of hoses used offshore, particularly offshore floating type hose lines, since additional buoyancy material needs to be incorporated in the hose or associated with the hose assembly to counteract the weight of the end fittings.
  • the present invention provides a hose end fitting for location in an end of multi-layer type hose, said end fitting comprising a tubular support member, at least one retaining ring axially slidable along the support member during fabrication of a hose body around the end fitting and stop means to prevent movement of the retainer ring along the whole of the axial length of the support member, said retainer ring having an outwardly facing surface which extends axially and radially outwardly as considered in the axial direction in which said stop means prevents axial movement of the retainer ring.
  • the retainer r ng may be cf a solid type construction and have a radially inwardly facing surface which is axially aligned with said outwardly facing surface and is of a cylindrical or other shape which is a close sliding fit over an outwardly facing surface cf the support tube.
  • the retainer ring may have a radially inwardly facing surface which extends axially and radially outwardly as considered in said axial direction in which said stop means prevents axial movement of the retainer ring.
  • the retainer ring may have a tail portion, typically of substantially uniform cross-sectional shape, and which extends from a radially inner edge of said outwardly facing surface of the retainer ring in an axial direction opposite that in which said stop means prevents axial movement of the retainer ring.
  • the tail portion may be of a tubular form for close sliding contact over the outer surface of the (generally cylindrical) tubular support member.
  • the tail portion may be discontinuous, e g it may be provided with fenestrations thereby to reduce weight and also provide in a hose assembly a mechanical interlock with polymeric material of the hose.
  • the invention is not confined to provision of a single retainer ring.
  • Two or more retainer rings may be provided on the tubular support member of the end fitting.
  • the tail portion of a retainer ring may be of a length selected to enable it to act as a spacer whereby it determines the minimum axial separation of the outwardly facing surfaces of a successive pair of retainer rings.
  • the hose end fitting additionally may comprise a tubular spacer which is independent of a retainer ring but mav be arran ed between a Dair of successive retainer rings to determine a minimum axial separation.
  • the stop means may be a projection such as an annular formation provided at or near an axial end of the support member and may act also as an end rib profile over which a hose lining layer is applied.
  • a retainer ring may be axially spaced at its radially inner portion from said rib profile by means of a tubular spacer or like spacer component.
  • the stop means may be comprised by one or more radially outwardly extending projections formed on the outer surface of the tubular support member and arranged for direct abutment by a retainer ring.
  • tubular support member is provided with an end rib profile which as considered in longitudinal section co-operates with the or the nearest retainer ring to define a restrictive (annular) neck region.
  • hose liner material which extends through that neck region to lie in a relatively enlarged spacing between the retainer ring and outer surface of the support member (or a spacer component if provided) will tend to be held captive. Forces tending to pull the liner axially will result in the end region of the liner primarily tending to be compressed in contrast to the conventional hose end fitting configuration in which the liner primarily tends to be subject to a tearing action under axial load.
  • the hose end fitting may be of a flanged type construction and have a flange section at one end of the tubular support member, either formed integrally therewith or interconnected for example by welding.
  • the retainer ring(s) may be fitted to a tubular support member subsequent to provision of a flange or stop means, and prior to provision respectively of the other of the flange and stop means.
  • the retainer ring may have an axially and radially outwardly extending surface which in cross-section is rectilinear, i e to provide a frusto-conical shaped surface. Alternatively it may for example be of a curved profile in cross-section.
  • the retainer ring is of a kind having both inwardly and outwardly facing surfaces which each extend both axially and radially it may be of a material and construction such that radially inwardly acting forces of a surrounding hose body tend to deform the retainer ring thereby to transmit compressive forces to hose body material lying radially inwards of the radially inwardly facing surface.
  • any such deformation of the retainer ring will tend to close the neck region and thereby, in use, enhance the compressive effect on hose material held captive by that neck region.
  • the present invention further provides a hose assembly comprising a multi-layer hose and a hose end fitting of the invention, wherein a first layer of the hose terminates at said retainer ring and another layer extends axially beyond said first layer to lie over the outwardly facing surface of the retainer ring.
  • the hose of the assembly may contain an embedded reinforcement for example of metallic material or of other materials such as polyester and rayon.
  • a layer of reinforcement may be arranged to substantially directly overlie an outwardly facing surface of a retainer ring.
  • the layer of material extending over the outwardly facing surface may incorporate a local restraining assembly, for example a helically wound wire, axially aligned with the retainer ring.
  • a local restraining assembly for example a helically wound wire, axially aligned with the retainer ring.
  • FIG. 1 is a side view, half in longitudinal section, of a hose end fitting in accordance with the present invention
  • Figure 2 shows part of the hose end fitting in longitudinal section in a condition ready for assembly with a hose during ' building of the hose
  • Figure 3 shows part of a hose assembly comprising the fitting of Figures 1 and 2 and a hose body.
  • a hose end fitting 10 comprises a generally cylindrically shaped support member spigot 11 to one end of which a flange 12 is welded.
  • Two retainer rings 13 are provided on the spigot 11 and are held captive by a circumferentially extending stop ring 14 welded around the spigot, at a position spaced inwards its end 15 furthest from the flange 12. Additionally an end rib 16 is welded around the spigot at the extreme end 15 to act as a stress relieving profile at the point where a subsequently applied hose lining layer is in transition from being radially inwardly unsupported to being compressed against the radially outer surface of the spigot.
  • Each retainer ring 13 comprises a retainer portion 17 and a spacer portion 18.
  • the retainer portion is of a frusto-conical shape to define outwardly and inwardly facing surfaces 19,20 which each extend axially and radially outwardly as considered in an axial direction from the flange to- the end 15.
  • the spacer portion 18 is integral with the retainer portion and is of a cylindrical form which is a close sliding fit over the radially outer surface of the spigot.
  • the axial length of the spacer portion associated with the retainer ring nearest to the end 15 is selected to provide a desired axial spacing between the two retainer rings thereby to locate therebetween an end of a hose layer, typically a reinforced layer.
  • the axial length of the spacer portion of the other retainer ring for convenience corresponds with that of the ring nearest the end 15, thereby to avoid the need to provide retainer rings of two different constructions, and risk incorrect positioning of differently dimensioned rings, but it will be appreciated that if desired and particularly to further minimise weight the retainer ring furthest from the end 15 may have a shortened spacer portion or comprise only the retainer portion.
  • the aforedescribed retainer rings typically are formed from steel and may be shaped by taking a length of cylindrical tube which is then subject to cold rolling to create a bell-end shape, thus providing the frusto-conical shape of the retainer portion 17.
  • the retainer ring may be constructed using other techniques such as casting or moulding, and may be of a material other than metal.
  • the end fitting is aligned with a hose building mandrel (not shown), with its end 15 adjacent an end of that mandrel.
  • the retainer rings are then slid towards the flanged end and hose lining material 30 is applied around the hose mandrel and over the end of the spigot, to cover the end rib 16 and terminate adjacent the stop ring 14.
  • the conventional skirt layers 31 are then applied to the end region of the hose, these also terminating at the end fitting in proximity to the stop ring 14.
  • the outward slope provided by the skirt layers and lining layer is arranged to complement the profile of the radially inwardly facing surface 20 of the retainer ring nearest that end of the spigot. That retainer ring is then slid axially into contact with the end of the part-formed hose and urged axially further in that direction by means of a suitable tool acting between the ring and flanged end 12 of the hose fitting thereby to compress the ends of the layers of the part-formed hose.
  • a reinforcement layer 32 comprising metallic reinforcing elements embedded in rubber is then applied around the hose mandrel and to extend over the outer surface 19 of the retainer ring nearest the end 15 of the spigot.
  • the reinforcement is then held radially against the outer surface of the retainer ring by means of a binding provided by a helically wound wire 33.
  • Additional filler rubber is then provided as necessary to create a sloping outer surface complementary to the inward facing surface of the second retainer ring 13 which is then slid into place. This is then urged axially towards the end 15 to compress the end of the aforedescribed first reinforcement layer 32, and the manufacturing process is repeated to apply a second reinforcement layer 34 that extends over the second retainer ring.
  • Outer component layers 35,36 of the hose and finally a cover layer 37 are then applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

Un embout terminal (10) pour tuyau souple, devant être placé au bout d'un tuyau souple du type à plusieurs couches, comprend un élément de support tubulaire (11), au moins un anneau de fixation (13) pouvant coulisser axialement le long de l'élément de support (11) au cours du placement du corps du tuyau autour du raccord terminal, et des éléments en forme de butée (14) servant à empêcher le déplacement de l'anneau de fixation (13) sur toute la longueur axiale de l'élément de support. L'anneau de fixation (13) présente une surface orientée vers l'extérieur (19) qui s'étend axialement et radialement vers l'extérieur dans le sens axial, c'est-à-dire dans le sens où la butée (14) empêche le déplacement axial de l'anneau de fixation.
EP92915350A 1991-07-24 1992-07-13 Embout terminal pour tuyau souple et ensemble tuyau Withdrawn EP0595874A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9115962 1991-07-24
GB9115962A GB2258507B (en) 1991-07-24 1991-07-24 Hose end fitting and assembly
PCT/GB1992/001271 WO1993002314A1 (fr) 1991-07-24 1992-07-13 Embout terminal pour tuyau souple et ensemble tuyau

Publications (1)

Publication Number Publication Date
EP0595874A1 true EP0595874A1 (fr) 1994-05-11

Family

ID=10698881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92915350A Withdrawn EP0595874A1 (fr) 1991-07-24 1992-07-13 Embout terminal pour tuyau souple et ensemble tuyau

Country Status (5)

Country Link
EP (1) EP0595874A1 (fr)
AU (1) AU2279492A (fr)
GB (2) GB2258507B (fr)
HU (1) HU9400189D0 (fr)
WO (1) WO1993002314A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9224549D0 (en) * 1992-11-24 1993-01-13 Dunlop Ltd Hose end fitting and hose assembly
GB9224548D0 (en) * 1992-11-24 1993-01-13 Dunlop Ltd Hose end fitting and hose assembly
US20110042940A1 (en) * 2009-08-20 2011-02-24 Veyance Technologies, Inc. Coupling for large bore reinforced hose

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994587A (en) * 1932-09-26 1935-03-19 Goodrich Co B F Flexible hose
DE1264185B (de) * 1962-05-26 1968-03-21 Continental Gummi Werke Ag Druck- oder/und Saugschlauch mit einvulkanisiertem Anschlussstutzen
US4477108A (en) * 1982-05-17 1984-10-16 Goodall Rubber Company Flexible hose having an end connection fitting
DE3229691C1 (de) * 1982-08-10 1983-10-27 Pahl'sche Gummi- und Asbest-Gesellschaft "Paguag" GmbH & Co, 4000 Düsseldorf Schlaucharmatur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9302314A1 *

Also Published As

Publication number Publication date
GB9324997D0 (en) 1994-02-09
GB9115962D0 (en) 1991-09-11
HU9400189D0 (en) 1994-05-30
GB2271823A (en) 1994-04-27
WO1993002314A1 (fr) 1993-02-04
GB2258507B (en) 1994-08-10
AU2279492A (en) 1993-02-23
GB2258507A (en) 1993-02-10

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