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
  • F16L21/00—Joints with sleeve or socket
• • 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
  • F16L37/02—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined
  • F16L37/04—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity
• • 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
  • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
• • 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
  • Y10S285/903—Corrugated
• • 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
  • Y10S285/921—Snap-fit

Definitions

• the present invention relates to the connection of tubular elements and the connection of a tubular element with an accessory.
• the field of the invention includes tubes for the circulation of gaseous or liquid fluids, pulverulent materials, and more generally all uses of metal or even plastic tubes and conduits.
• Some solutions use connecting parts such as necklaces or rings. They have the drawback of requiring installation, mounting and maintenance operations. In addition, the risk of unexpected dismantling cannot be completely ruled out.
• the upper element comprises, facing the lower element A and going outward from a cylindrical part, a frustoconical rib diverging upwards and surrounded by a circular groove , said groove having a disengaging cross section and an elastically deformable external skirt
• the lower element comprises, facing the upper element and going outwards, from a cylindrical part, a frustoconical bowl flaring upwards able to receive the rib of the upper element and bordered by a skirt external frustoconical diverging downwards, said external skirt forming, with the wall of the bowl, a circular rib, and being capable of coming elastically into contact against the internal face of the external skirt of the upper element, in the groove of this element, and that the lower edge of the outer skirt of the upper element A comprises retaining means snapping under the edge of the outer skirt of the lower element B.
• This device has certain drawbacks. On the one hand, the manufacture of such devices is relatively expensive. On the other hand, the connection and disassembly of such devices is not always easy.
• the invention aims to remedy these drawbacks by providing a reliable device, easy to use and low cost of implementation.
• the goal is to make a quick and tight connection.
• the invention relates in its most general sense to a device for the connection of two tubular elements, composed of two complementary parts extending the ends of said tubular elements, characterized in that the two complementary parts each consist of a flare substantially rigid conical, extended by a semi-circular rim, the semi-toric crowns being nestable.
• the frustoconical flares are divergent in the direction of the connection plane.
• the semi-toric crowns have a closed section over approximately 180 °.
• the semi-toric crowns have external extensions extending substantially perpendicular to the connection plane of the two tubular elements.
• one of the semi-circular edges has a deformation for housing a semi-O-ring.
• the section of the outer semi-toric crown present at rest a radius of curvature slightly less than the section of the inner semi-toric crown.
• At least one of the conical flares has undulations.
• the two conical flares have undulations.
• the devices are fixed to the tubular elements by a connecting means such as fittings, collars, welding, bonding, rivets.
• connection means consists of a substantially rigid conical flare, extended by a flange semi-toric.
• the invention also relates to a method of manufacturing a connection device or a connectable element having a conical part extended by a semi-toric flange, characterized in that the end of a tubular element is deformed.
• the device for the connection of two tubular elements according to the invention is characterized in that it further comprises a ring for locking the nested semi-toric flanges.
• the outer semi-toric flange is extended by a circumferential rib in which said locking rod is capable of being put in place for locking the assembly.
• the interior semi-toric rim has a semi-annular border.
• the semi-toric outer rim has radial slots to delimit flexible legs.
• At least one of the tubular elements has a ring exterior to facilitate welding of an additional part.
• At least one of the parts is formed by a plurality of overlapping strips.
• At least one of the parts has a corrugated zone between the tubular element and the toric flare.
• the corrugated zone has a succession of corrugations oriented axially and offset axially.
• the corrugated zone has a succession of corrugations oriented transversely and offset axially.
• the corrugated area is protected by a conical casing.
• a cushion for vibration damping is placed on the connection zone.
• This pad can be made of pressed wire.
• FIG. 1 represents a view in partial section of a device according to the invention
• FIG. 3 shows a sectional view of a first alternative embodiment
• - Figure 4 shows a sectional view of a second alternative embodiment
• Figures 5 and 6 show a view, respectively in detail and in section, of a third assembly variant
• - Figures 7 and 8 show detailed views of other alternative embodiments of semi-toric flange assembly
• FIG. 9 represents a sectional view of an alternative embodiment with a wavy deformable sector
• Figures 10 and 11 show a view, respectively in detail and in section, of an alternative assembly with corrugated deformable sector
• Figures 12 and 13 show two alternative embodiments comprising a protective casing.
• Figure 1 shows a partial sectional view of a connection device according to the invention.
• the device allows the connection of a first tubular element (1) with a second tubular element (2).
• the tubular element (1) is extended by a flared conical skirt (3), opening towards the connection plane (10).
• the angle formed by the wall of the conical skirt (3) relative to the connection plane (10) is approximately 20 °.
• tubular element (2) is extended by a flared conical skirt (4), opening towards the connection plane (10).
• the angle formed by the wall of the conical skirt (4) with respect to the connection plane (10) is approximately 20 °
• the two conical skirts (3, 4) open towards each other to delimit a lenticular hollow space.
• These skirts are extended by semitone rims (5, 6) which can fit into each other.
• These semi-toric flanges (5, 6) have a section in the form of a semicircle, extending over approximately 180 °. They are extended by lips (7, 8) orienting themselves roughly perpendicular to the connection plane (10).
• the outer lip (8) is slightly more flared than the inner lip (7) so as not to hinder the introduction of the semi-toric rim (5) into the external semi-toric rim (6).
• the lip (7) extending the inner rim (5) is preferably split.
• the outer flange (6) has a rib (9) in which a seal can be incorporated.
• connection device is made of a rigid material which is elastically deformable, for example steel. It can be produced by deformation of the end of the two tubes to be connected. It can also be produced by assembling two independent elements on the ends of the tubes.
• connection devices are opposite. This ensures manual pressure of the element provided with the inner rim (5) against the element provided with the outer rim (6). This pressure can also be exerted using a suitable mechanism.
• the inner semi-toric ledge (5) then fits into the external semi-toric ledge (6) due to the elasticity of materials.
• Disassembly can be carried out by inserting between the lips (7, 8) a simple wire of suitable section so as to separate the two lips from one another, and to separate the connection device.
• the shape of the outer lip (8) is determined to facilitate the engagement of the inner rim
• FIGS 3 and 4 show two examples of an alternative embodiment.
• connection device has a flexibility making it possible to absorb alignment or positioning faults, and also to absorb displacements relative to the elements.
• the side of one of the conical flares (3) for the version shown in Figure 3, or the sides of the two conical flares (3, 4) for the version shown in Figure 4, have undulations (11, 12).
• the depth of the undulations is in the example described with reference to FIGS. 3 and 4 constant. According to another embodiment, it can be variable to adapt the flexibility.
• the flares (3, 4) may according to yet another variant have a smooth conical zone and a wavy zone.
• a particular embodiment consists in providing on the exterior surface a metal braid welded or held by a crown or the like. This braid protects the ripples against mechanical degradation or absorbs the effects of the bottom due to internal pressure.
• Figures 5 and 6 show a view, respectively in detail and in section, of a third assembly variant.
• (1) has, as in the previous variants, a first convex semi-toric zone (5), enveloping the convex semi-toric rim (6) extending the conical skirt (4) of the second tubular element (2).
• the convex semi-toric zone (5) is then extended by a concave semi-toric rim (50) forming a peripheral rib in which is housed a rod (51) ensuring the locking of the assembly.
• the convex semi-toric zone (5) and / or the concave semi-toric rim (50) have radial slots to define flexible tabs facilitating the passage of the internal semitoric rim (6).
• the tubular element (1), and possibly the tubular element (2), have an outer ring (52, 53) facilitating the connection of an additional part using a weld bead (54).
• the weld bead (54) connects the front surface of the ring (54) and the lateral surface of the complementary part.
• FIG. 7 and 8 show detailed views of other alternative embodiments of semi-toric flange assembly.
• FIG. 9 represents a sectional view of such an alternative embodiment with a disassembled corrugated deformable sector.
• the tubular element (1, 2) is connected to the connection zone by means of a bellows skirt (55, 56) having a plurality of corrugations (57 to 62) oriented axially, and offset according to an envelope conical.
• the connecting element is produced, according to the variant illustrated in FIG. 8, by a superposition of metal strips.
• Figures 10 and 11 show a view, respectively in detail and in section, of an alternative assembly with corrugated deformable sector.
• the undulations (70 to 74) are parallel to the longitudinal axis, which facilitates angular displacements.
• Figures 12 and 13 show two alternative embodiments comprising a protective casing (80).
• This casing (80) is a conical piece which covers the corrugated area to protect it and to avoid the introduction of materials capable of reducing the flexibility of this area.
• This conical piece can come to cover one or the other side of the assembly, or both sides.
• Figures 14 and 15 show a sectional view of an alternative assembly incorporating a bearing
• the pad (82) axi-symmetrical able to absorb vibrations.
• the pad (82) is formed of a network of pressed fibers, with a density of a few grams per cm3.
• the pad (82) is wedged between the skirts (1) and (2).
• Figures 14 and 15 show that the skirts can be flat or wave parallel to the axis of the system or perpendicular to this same axis, and that they can be protected or not by housings (3) and (4).
• Figures 16 and 17 show views comparable to 14 and 15, except for the pads which are trapped under the semi-toric edges of the junctions.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)
• Mutual Connection Of Rods And Tubes (AREA)

Applications Claiming Priority (5)

Publications (1)

Family

ID=26234336

Family Applications (1)

Country Status (6)

Families Citing this family (6)

Family Cites Families (21)

• 1998
  • 1998-12-24 FR FR9816429A patent/FR2778964B3/fr not_active Expired - Lifetime
• 1999
  • 1999-05-20 WO PCT/FR1999/001203 patent/WO1999060299A1/fr not_active Application Discontinuation
  • 1999-05-20 AU AU38304/99A patent/AU3830499A/en not_active Abandoned
  • 1999-05-20 JP JP2000549879A patent/JP2002515576A/ja not_active Withdrawn
  • 1999-05-20 EP EP99920899A patent/EP1080324A1/de not_active Withdrawn
• 2000
  • 2000-11-20 US US09/716,859 patent/US6557901B1/en not_active Expired - Fee Related

Non-Patent Citations (1)

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