EP1250548A1 - Connecting device for conduits - Google Patents

Connecting device for conduits

Info

Publication number
EP1250548A1
EP1250548A1 EP01907666A EP01907666A EP1250548A1 EP 1250548 A1 EP1250548 A1 EP 1250548A1 EP 01907666 A EP01907666 A EP 01907666A EP 01907666 A EP01907666 A EP 01907666A EP 1250548 A1 EP1250548 A1 EP 1250548A1
Authority
EP
European Patent Office
Prior art keywords
tube
ring
connection device
tubes
connection
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Withdrawn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
EP01907666A
Other languages
German (de)
French (fr)
Inventor
Claude Trichard
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.)
Novoplastic SA
Original Assignee
Novoplastic SA
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 Novoplastic SA filed Critical Novoplastic SA
Publication of EP1250548A1 publication Critical patent/EP1250548A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0925Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe

Definitions

  • the present invention relates to the technical field of conduits, pipes or tubes, used to convey energy in electrical, optical or fluid form.
  • the construction of such transport networks, often underground or underwater therefore requires the juxtaposition and connection of a set of elements, such as tubes to make the connection between two joints.
  • connection devices resistant to strong traction, having compact dimensions and not requiring a long connection time so as not to immobilize the machines for too long, is therefore particularly sought after.
  • Connection devices which make it possible to connect two ends of tubes in a leaktight manner, comprising a body, substantially cylindrical and having two symmetrical and opposite portions for the engagement of the respective ends of tubes, each of the portions comprising hooking means for retaining the tube in the connector, and sealing means for such a connection, said means for hooking each portion comprising:
  • a split ring whose ends are arranged on either side of the longitudinal rib, said ring being provided with an internal thread, the external shape of said ring being chosen so that at least part of its peripheral surface comes to bear against the frustoconical chamber after the engagement of the end of the tube, so as to cause the blocking of the tube by any traction on said tube in opposite direction to its direction of engagement
  • connection device for metal pipes in which a clamping ring is subjected to the action of springs integrated in said device.
  • Such an embodiment intended for a particular application to metal pipes, has a complexity of design and construction, a drawback making its manufacture difficult and expensive.
  • plastic tubes are generally wound before their installation, generating significant bending stresses.
  • the object of the present invention is a compact connection device, provided with a quick coupling system for the tubes to be connected and which is removable without specific tools.
  • Another object of the present invention is to provide a connection device capable of adapting to a possible deformation or ovalization of the circular section of the tubes, and of ensuring a reliable and leaktight assembly.
  • the ring in a connection device of the type concerned, is on the one hand disposed freely in the frustoconical chamber and on the other hand, elastically deformable, the inside diameter of the ring being smaller than the outside diameter of the tube in an unstressed or deformed state of said ring, so as to deform elastically and to grip onto the tube during the introduction of said tube.
  • the ring has grooves extending over part of its length starting from one end and distributed radially so as to form between each pair of grooves, a radial tongue on the side of the 'end
  • the internal thread of each ring has a sharp edge capable of fitting into the periphery of the tube
  • This arrangement facilitates the positioning of each tube in the fitting and improves the tube-ring connection, since it adds a notch to the tightening exerted by the ring.
  • This arrangement is also advantageous during disassembly of the device because by rotation in opposite direction of the body it allows the longitudinal and simultaneous release towards the outside of the body of the two ends of the tube.
  • the body has a central circular rib whose diametrical faces form abutments for the end face of each tube.
  • the engagement of each tube in the bodies is limited by a stop on the rib, and contact with the stop informs the operator that he can complete the connection by pulling the tubes outwards to obtain the complementary tightening of the Tubes by retraction of the rings cooperating with the wall of the corresponding frustoconical chamber.
  • the invention also relates to an underground or underwater installation conduit comprising at least two installation tubes and at least one connection device
  • connection device according to the invention lies in particular in its great simplicity of construction and in a reduced number of component parts.
  • connection device according to the invention representing embodiments of the connection device according to the invention, given by way of nonlimiting examples in which - Figure 1 is an exploded view of a connection device according to the invention.
  • FIG. 2 is a longitudinal sectional view of a connection device according to the invention - Figure 3 shows an enlarged element of Figure 2
  • Figure 4 is a view similar to Figure 2 when the device connects two ends of tubes.
  • FIG. 5 is a partial sectional view along V-V of Figure 4.
  • FIG. 6 and 7 are respectively side and front views of another embodiment of a ring of a connection device according to the invention.
  • Figure 1 shows an exploded connection device.
  • the connection device consists of a substantially cylindrical main body 1 and having two portions 2a, 2b symmetrical with respect to a plane orthogonal to the longitudinal axis of said main body 1.
  • the first portion 2a has, following the longitudinal axis from the outside towards the central part of the connection device, an inlet chamfer 3 and an extreme cylindrical surface 4 in which a first circular groove 4a is formed.
  • the first portion 2a is extended by a frustoconical chamber 5 whose large base partially delimited by a shoulder 6 is located towards the center of the connection device.
  • a longitudinal rib 7 also projects inside the frustoconical chamber 5.
  • the shoulder 6 is then extended by a central cylindrical bearing in which is also formed a second circular groove 8a.
  • connection device according to the invention also comprises O-rings 1 0 which are received in the internal grooves 4a and 8a.
  • the connection device according to the invention also comprises a split ring 1 1 disposed in each frustoconical chamber 5.
  • This split ring 1 1 has at its slot two ends 1 1 a, 1 1 b opposite which rests on the longitudinal rib 7 thus allowing said split ring 1 1 to slide longitudinally along said longitudinal rib 7 and to block in rotation said split ring 1 1 relative to the main body 1
  • the ring 1 1 is thus arranged free, along the longitudinal axis yy 'of the connection device, in the frustoconical chamber 5 Its positioning at the interior of the frustoconical chamber 5 is only determined by the end of a tube 20, during its movement in the direction of engagement or in the opposite direction to the direction of engagement in the connection device A rotation of the main body 1 or more precisely of the connection device therefore also rotates the split ring 1 1
  • the latter is advantageously extendable by spreading the ends 1 1 a and 1 1 b more or less, as is the case during the introduction of a tube 20 into the connection device and passing through the split ring 1 1
  • the ring 1 1 is made for example with a plastic or metallic material whose elasticity allows, starting from an unstressed or non-deformed state of the ring 1 1 in which its internal diameter is smaller than the external diameter of the tubes 20 , to deform elastically and to grip onto said tube 20 during its introduction into said device
  • the main body 1 can be provided with external longitudinal ribs 1 a, 1 b intended to facilitate gripping and handling of the connection device. It is thus easier to turn the connection device according to the invention manually with or without specific tool
  • the body 1 advantageously has a particularly resistant central zone This central zone, located between the frustoconical chambers 5, having an increased thickness and the longitudinal external ribs 1 a makes it possible to reinforce the body 1, which can withstand high pressures, for example of the order of 50 bars, according to a given embodiment
  • the split ring 1 1 is provided internally with a thread 1 2 having a diameter smaller than the outside diameter of the tubes 20 intended to be connected
  • the split rings 1 1 therefore come bear on the tubes intended to be connected as soon as they are engaged in the connection device
  • the split rings 1 1, disposed respectively in the frustoconical chambers 5 of the portions 2a and 2b have a thread in the opposite direction
  • the main body 1 being produced for example by mirror welding of two half-shells obtained for example by injection of plastic material, therefore generates only burrs along the joint plane of said half-shells.
  • said split ring 1 1 is provided with two diametrically opposite longitudinal grooves 1 3 which are positioned on this joint plane so as to remove all tightening problem or possible jamming.
  • the body 1 consists of two identical molded half-shells.
  • one of the half-shells is pivoted by 180 ° along an axis transverse to the longitudinal axis y-y ', to form a second frustoconical chamber 5 provided with a longitudinal rib 7.
  • Each half-shell therefore has only one longitudinal rib 7 ( Figure 1, for example)
  • the split ring 1 1 advantageously has a peripheral surface 14 of convex shape.
  • This peripheral surface 14 has for example a curvature of the spherical type allowing a tightening of said ring 1 1 without jamming in the frustoconical chamber 5.
  • the tightening of said split ring 1 1 is obviously obtained by a longitudinal displacement of said split ring 1 1 along the longitudinal rib 7 starting from the large cone base materialized by the shoulder 6.
  • Figures 6 and 7 show another embodiment of the ring 1 1.
  • Figure 7 is a view along arrow F of Figure 6.
  • the ring 1 1 has longitudinal grooves 14a, extending over a portion of its length from an end 1 4b.
  • the grooves 14a completely pass through the radial thickness of the ring 1 1 and open outwards at the end 14b
  • the grooves 14a are distributed radially so as to delimit a set of radial tongues 14c on the side of the end 14b , each radial tongue 14c thus being delimited by a pair of grooves 14a.
  • the ring 1 1 can thus be perfectly adapted to slightly deformed tubes or ovalized, thanks to the presence of grooves 14a and radial tongues 1 4c. The latter therefore facilitate the introduction of the tube 20 into the ring 1 1, in particular when said tube 20 has a section which is no longer perfectly circular.
  • Figure 2 shows a sectional view of the connection device according to the invention in which the split ring 1 1 on the left, that is to say that located in the portion 2a bears against the shoulder 6 and on the rib longitudinal 7
  • a line 20 has been shown by a dashed line engaged in the connection device and more specifically in the portion 2b
  • the tube 20 is engaged to abut against the shoulder formed by the central circular rib 9 and therefore crosses the split ring 1 1 The latter therefore deviates slightly to come into abutment or approach the internal wall 5a of the frustoconical chamber 5.
  • the outer peripheral surface 14 of the split ring 1 1 which thus comes towards the cone formed by the frustoconical chamber
  • the spacing of the split ring 1 1 causes a initiation or the beginning of incrustation of the internal thread 1 2 in the mast component of said tube 20.
  • the internal thread 1 2 of the split rings 1 1 has for example a section with sharp angles of the right triangle type to form helical notches opposing any withdrawal of the tube 20 when said internal thread 1 2 s' is embedded in the periphery of said tube 20.
  • An example of such an internal thread 1 2 is represented for example in FIG. 3.
  • FIG. 4 shows a completed connection between two tubes 20 thanks to the connection device.
  • FIG. 4 shows a completed connection in which the tubes 20 are definitively immobilized using the connection device. A slight pulling movement on each tube 20 makes it possible to drive out the split rings 1 1, which come to tighten further around the tubes 20 by the cooperation between the internal wall 5a of the frustoconical chambers 5 and the external surfaces 14
  • connection device With the connection device according to the invention, the ends of the tubes 20, after having undergone a slight withdrawal movement for blocking (see Figure 4), remain in the area located between the frustoconical chambers 5, namely the reinforced area.
  • connection of two tubes 20 is thus effected by engaging parallel to the longitudinal axis yy '(see Figure 2) the ends of said tubes 20.
  • the abutting against the central circular rib 9 is achieved by a rotational movement of the main body 1 in the opposite direction to that corresponding to the uncoupling.
  • the latter is obtained by imparting to the main body 1 a rotational movement so as to gradually release the ends of the tubes 20 from the internal threads 1 2.
  • This is possible thanks to the longitudinal ribs 7 which make it possible to rotate the split rings 1 1 .
  • the ends of the tubes 20 are thus simultaneously pushed towards the outside of the connection device.
  • the complete uncoupling is obtained after a certain number of rotations of the body 1 and this thanks to the internal thread 1 2 in the opposite direction of the two split rings 1 1.
  • connection of the connection device with the ends of the tube 20 is effected by engaging each end in the corresponding ring 1 1, possibly with a relative rotation of the tube 20 relative to the ring 1 1, then, at the end of engagement, by exerting traction on the tube 20 to move the ring 11 in its frustoconical chamber 5 and obtain additional tightening on the tube 20.
  • connection device finds its application for the connection of plastic tubing, for example HDPE, PP or PVC.
  • the connection device according to the invention has the advantage of being removable and without any specific tool. Manual disassembly is possible without problem. In addition, no specific preparation of the tube ends 20 is necessary to arrive at their connection.
  • the connection device also has great mechanical strength without increasing its size. The use of an automatic laying machine is therefore perfectly indicated.
  • connection device according to the invention is advantageous insofar as the connection of two tubes 20 takes place extremely quickly, and the reliability of such a connection is not impaired.
  • the presence of the central circular rib 9 makes it possible to indicate to the user of such a connection as far as it is necessary to introduce the ends of the tubes 20 to obtain a satisfactory connection.
  • the longitudinal cylindrical surfaces 4 and 8 allow a longitudinal guidance of the tubes 20 and their relatively large dimensions ensure a seal even under strong radii of curvature to which the assembly consisting of tubes 20 and the connection device can be subjected
  • the seals 1 0, for example O-rings, make it possible to ensure this seal in cooperation with the bearing surfaces 4 and 8
  • connection device and more particularly the tapered shape of the body 1, also allows its use in a strand of tubes, which is particularly advantageous. Its use on single-tube and multi-tube landfill machines is thus possible without difficulty.

Abstract

The invention concerns a connecting device for sealing connection between two tube (20) ends, two opposite symmetrical portions (2a, 2b) for engaging the respective tube (20) ends, each of the portions (2a, 2b) including catching means for retaining the tube in the connection, and means for sealing said connection, said catching means of each portion comprising a truncated chamber (5) provided in each portion, a longitudinal rib (7) projecting into the truncated chamber (5) and a slotted ring (11) whereof the ends (11a, 11b) are arranged on either side of the longitudinal rib (7), said ring (11) being provided with an internal thread (12), so as to cause the tube (20) to be locked by any traction on said tube in a direction opposite to its engagement direction. The ring (11) is arranged free in the truncated chamber (5) and elastically deformable, the internal diameter of the ring (11) being smaller than the external diameter of tube (20) when it is not in a stressed or deformed state, so as to be elastically deformed and grip the tube (20) when said tube (20) is inserted.

Description

DISPOSITIF DE CONNEXION POUR CONDUITS CONNECTION DEVICE FOR CONDUITS
La présente invention se rapporte au domaine technique des conduits, tuyaux ou tubes, utilisés pour acheminer de l'énergie sous forme électrique, optique ou fluide. La construction de tels réseaux de transport, souvent souterrains ou subaquatiques nécessite donc la juxtaposition et le raccordement d'un ensemble d'éléments, tels que des tubes pour faire la liaison entre deux joints.The present invention relates to the technical field of conduits, pipes or tubes, used to convey energy in electrical, optical or fluid form. The construction of such transport networks, often underground or underwater therefore requires the juxtaposition and connection of a set of elements, such as tubes to make the connection between two joints.
La réalisation d 'un raccordement entre deux tubes impose des contraintes techniques liées d 'une part, à l'application particulière (gaz, télécommunication, .. ) et d 'autre part à l'utilisation de machines de pose automatique pour ces tubes. L'utilisation de dispositifs de raccordement résistant à de fortes tractions, présentant des dimensions compactes et ne nécessitant pas un temps de raccordement important pour ne pas immobiliser trop longtemps les machines, est donc particulièrement recherchée.The realization of a connection between two tubes imposes technical constraints related on the one hand, to the particular application (gas, telecommunications, ..) and on the other hand to the use of automatic laying machines for these tubes. The use of connection devices resistant to strong traction, having compact dimensions and not requiring a long connection time so as not to immobilize the machines for too long, is therefore particularly sought after.
On connaît des dispositifs de connexion permettant de raccorder de manière étanche deux extrémités de tubes, comportant un corps, sensiblement cylindrique et présentant deux portions symétriques et opposées pour l'engagement des extrémités de tubes respectives, chacune des portions comportant des moyens d'accrochage pour retenir le tube dans le raccord, et des moyens d'étanchéité pour un tel raccordement, lesdits moyens d'accrochage de chaque portion comprenant :Connection devices are known which make it possible to connect two ends of tubes in a leaktight manner, comprising a body, substantially cylindrical and having two symmetrical and opposite portions for the engagement of the respective ends of tubes, each of the portions comprising hooking means for retaining the tube in the connector, and sealing means for such a connection, said means for hooking each portion comprising:
- une chambre tronconique ménagée dans chaque portion et dont la grande base se situe vers le centre du dispositif ,- a frustoconical chamber provided in each portion and whose large base is located towards the center of the device,
- une nervure longitudinale faisant saillie dans la chambre tronconique ,- a longitudinal rib projecting into the frustoconical chamber,
- et une bague fendue dont les extrémités sont disposées de part et d 'autre de la nervure longitudinale, ladite bague étant pourvue d'un filetage interne, la forme extérieure de ladite bague étant choisie pour qu'au moins une partie de sa surface périphérique vienne en appui contre la chambre tronconique après l'engagement de l'extrémité du tube, de manière à provoquer le blocage du tube par toute traction sur ledit tube en sens inverse à son sens d 'engagement- And a split ring whose ends are arranged on either side of the longitudinal rib, said ring being provided with an internal thread, the external shape of said ring being chosen so that at least part of its peripheral surface comes to bear against the frustoconical chamber after the engagement of the end of the tube, so as to cause the blocking of the tube by any traction on said tube in opposite direction to its direction of engagement
Toutefois, ces dispositifs sont inadaptés à la pose par des machines, par exemple en favorisant le blocage lors de leur passage dans des guides. De plus, ils nécessitent des outillages complexes pour être démontés sur site, par exemple pour engager un nouveau câble dans le tube.However, these devices are unsuitable for installation by machines, for example by promoting blocking when they pass through guides. In addition, they require complex tools to be dismantled on site, for example to insert a new cable in the tube.
On connaît également par le document US A-2 01 7 994, un dispositif de connexion pour tuyaux métalliques dans lesquels une bague de serrage est soumise à l'action de ressorts intégrés dans ledit dispositif.Also known from document US A-2 01 7 994, a connection device for metal pipes in which a clamping ring is subjected to the action of springs integrated in said device.
L'action conjointe de ces ressorts et de l'extrémité rétrécie du dispositif permet à la bague métallique de s'incruster dans les tuyaux métalliques.The joint action of these springs and the narrowed end of the device allows the metal ring to become embedded in the metal pipes.
Une telle réalisation prévue pour une application particulière aux tuyaux métalliques, présente une complexité de conception et de construction, inconvénient rendant sa fabrication difficile et coûteuse.Such an embodiment, intended for a particular application to metal pipes, has a complexity of design and construction, a drawback making its manufacture difficult and expensive.
En outre, les contraintes de serrage de la bague sont appliquées a l'extrémité du dispositif de connexion, fragilisant ainsi ce dernier au voisinage des parties rétréciesIn addition, the clamping stresses of the ring are applied to the end of the connection device, thus weakening the latter in the vicinity of the narrowed parts.
En outre, les tubes en matière plastique, sont en général enroulés avant leur pose, générant des contraintes de flexion importantes.In addition, the plastic tubes are generally wound before their installation, generating significant bending stresses.
Ces contraintes ont tendance à déformer, et/ou à ovaliser les tubes, ce qui rend leur assemblage à l'aide d'un dispositif de connexion difficile, voire impossible.These constraints tend to deform, and / or to ovalize the tubes, which makes their assembly using a connection device difficult, if not impossible.
L'objet de la présente invention est un dispositif de raccordement compact, pourvu d'un système d'accrochage rapide pour les tubes à relier et qui est démontable sans outil spécifique.The object of the present invention is a compact connection device, provided with a quick coupling system for the tubes to be connected and which is removable without specific tools.
Un autre but de la présente invention est de réaliser un dispositif de connexion, susceptible de s'adapter à une éventuelle déformation ou ovalisation de la section circulaire des tubes, et d 'assurer un assemblage fiable et étanche.Another object of the present invention is to provide a connection device capable of adapting to a possible deformation or ovalization of the circular section of the tubes, and of ensuring a reliable and leaktight assembly.
Selon l'invention, dans un dispositif de connexion du genre concerné, la bague est d 'une part disposée libre dans la chambre tronconique et d'autre part, deformable élastiquement, le diamètre intérieur de la bague étant plus petit que le diamètre extérieur du tube dans un état non contraint ou déformé de ladite bague, de manière à se déformer élastiquement et à s'agripper sur le tube lors de l'introduction dudit tube.According to the invention, in a connection device of the type concerned, the ring is on the one hand disposed freely in the frustoconical chamber and on the other hand, elastically deformable, the inside diameter of the ring being smaller than the outside diameter of the tube in an unstressed or deformed state of said ring, so as to deform elastically and to grip onto the tube during the introduction of said tube.
Selon un mode de réalisation de l'invention, la bague présente des rainures s'étendant sur une partie de sa longueur en partant d'une extrémité et réparties radialement de manière à former entre chaque paire de rainures, une languette radiale du côte de l'extrémité Dans une forme d'exécution préférée, le filetage interne de chaque bague présente une arête acérée apte à s'insérer dans la périphérie du tubeAccording to one embodiment of the invention, the ring has grooves extending over part of its length starting from one end and distributed radially so as to form between each pair of grooves, a radial tongue on the side of the 'end In a preferred embodiment, the internal thread of each ring has a sharp edge capable of fitting into the periphery of the tube
Cet aménagement facilite la mise en place de chaque tube dans le raccord et améliore la liaison tube-bague, puisqu'il ajoute un crantage au serrage exercé par la bague.This arrangement facilitates the positioning of each tube in the fitting and improves the tube-ring connection, since it adds a notch to the tightening exerted by the ring.
Avantageusement, les filetages internes des deux bagues on des pas inversésAdvantageously, the internal threads of the two rings have reversed steps
Ainsi, lors du raccordement, l'entraînement en rotation du corps dans un sens, simultanément à l'engagement des tubes dans les bagues entraîne, en rotation les bagues et favorise l'introduction des filetages des bagues dans la paroi des tubes.Thus, during connection, the rotational driving of the body in one direction, simultaneously with the engagement of the tubes in the rings drives, in rotation the rings and promotes the introduction of the threads of the rings in the wall of the tubes.
Cet agencement est également intéressant lors du démontage du dispositif car par rotation en sens inverse du corps il permet le dégagement longitudinal et simultané vers l'extérieur du corps des deux extrémités du tube.This arrangement is also advantageous during disassembly of the device because by rotation in opposite direction of the body it allows the longitudinal and simultaneous release towards the outside of the body of the two ends of the tube.
Dans une forme d'exécution, le corps comporte une nervure circulaire centrale dont les faces diamétrales forment face de butées pour la face en bout de chaque tube. Ainsi, l'engagement de chaque tube dans les corps est limité par butée sur la nervure, et le contact avec la butée informe l'opérateur qu'il peut terminer la connexion en tirant les tubes vers l'extérieur pour obtenir le serrage complémentaire des tubes par rétraction des bagues coopérant avec la paroi de la chambre tronconique correspondante L'invention concerne également un conduit d'installation souterrain ou subaquatique comportant au moins deux tubes d'installation et au moins un dispositif de connexionIn one embodiment, the body has a central circular rib whose diametrical faces form abutments for the end face of each tube. Thus, the engagement of each tube in the bodies is limited by a stop on the rib, and contact with the stop informs the operator that he can complete the connection by pulling the tubes outwards to obtain the complementary tightening of the Tubes by retraction of the rings cooperating with the wall of the corresponding frustoconical chamber The invention also relates to an underground or underwater installation conduit comprising at least two installation tubes and at least one connection device
L'avantage du dispositif de connexion conforme à l'invention réside notamment dans sa grande simplicité de construction et dans un nombre réduit de pièces constitutivesThe advantage of the connection device according to the invention lies in particular in its great simplicity of construction and in a reduced number of component parts.
La fiabilité du dispositif est ainsi accrue et les coûts sont réduitsThe reliability of the device is thus increased and costs are reduced
D'autres caractéristiques et avantages ressortiront de la description détaillée donnée ci-après en référence au dessin annexé, représentant des formes d'exécution du dispositif de connexion selon l'invention, données à titre d 'exemples non limitatifs dans lesquels - La figure 1 est une vue éclatée d'un dispositif de connexion conforme à l'invention.Other characteristics and advantages will emerge from the detailed description given below with reference to the appended drawing, representing embodiments of the connection device according to the invention, given by way of nonlimiting examples in which - Figure 1 is an exploded view of a connection device according to the invention.
- La figure 2 est une vue en coupe longitudinale d'un dispositif de connexion conforme à l'invention - La figure 3 représente un élément agrandi de la figure 2- Figure 2 is a longitudinal sectional view of a connection device according to the invention - Figure 3 shows an enlarged element of Figure 2
- La figure 4 est une vue similaire à la figure 2 lorsque le dispositif connecte deux extrémités de tubes.- Figure 4 is a view similar to Figure 2 when the device connects two ends of tubes.
- La figure 5 est une vue en coupe partielle suivant V-V de la figure 4.- Figure 5 is a partial sectional view along V-V of Figure 4.
- Les figures 6 et 7 sont respectivement des vues de profil et de face d'un autre exemple de réalisation d'une bague d' un dispositif de connexion conforme à l'invention- Figures 6 and 7 are respectively side and front views of another embodiment of a ring of a connection device according to the invention
La figure 1 représente un dispositif de connexion en vue éclatée. Le dispositif de connexion se compose d'un corps principal 1 sensiblement cylindrique et présentant deux portions 2a, 2b symétriques par rapport à un plan orthogonal à l'axe longitudinal dudit corps principal 1 . La première portion 2a présente en suivant l'axe longitudinal de l'extérieur vers la partie centrale du dispositif de connexion un chanfrein d'entrée 3 et une portée cylindrique extrême 4 dans laquelle est ménagée une première rainure 4a circulaire. La première portion 2a se prolonge par une chambre tronconique 5 dont la grande base partiellement délimitée par un épaulement 6 se situe vers le centre du dispositif de connexion. Une nervure longitudinale 7 fait également saillie à l'intérieur de la chambre tronconique 5. L'épaulement 6 se prolonge ensuite par une portée cylindrique centrale dans laquelle est également ménagée une deuxième rainure circulaire 8a. Cette portée cylindrique centrale 8 se termine par une nervure centrale circulaire 9 séparant les deux portions 2a et 2b du corps cylindrique 1 Les deux portions 2a, 2b présentent une configuration symétrique. Le dispositif de connexion conforme à l'invention comporte également des joints toriques 1 0 qui viennent se loger dans les rainures internes 4a et 8a . Le dispositif de connexion conforme a l'invention comporte également une bague fendue 1 1 disposée dans chaque chambre tronconique 5. Cette bague fendue 1 1 présente au niveau de sa fente deux extrémités 1 1 a, 1 1 b en vis-à-vis qui s'appuie sur la nervure longitudinale 7 permettant ainsi à ladite bague fendue 1 1 de coulisser longitudinalement selon ladite nervure longitudinale 7 et de bloquer en rotation ladite bague fendue 1 1 par rapport au corps principal 1 La bague 1 1 est ainsi disposée libre, selon l'axe longitudinal y-y' du dispositif de connexion, dans la chambre tronconique 5 Son positionnement à l' intérieur de la chambre tronconique 5 n'est déterminé que par l'extrémité d' un tube 20, lors de son mouvement dans le sens d 'engagement ou dans le sens inverse au sens d 'engagement dans le dispositif de connexion Une rotation du corps principal 1 ou plus précisément du dispositif de connexion entraîne donc également en rotation la bague fendue 1 1 Cette dernière est avantageusement extensible en écartant plus ou moins les extrémités 1 1 a et 1 1 b, comme c'est le cas lors de l'introduction d'un tube 20 dans le dispositif de connexion et en traversant la bague fendue 1 1Figure 1 shows an exploded connection device. The connection device consists of a substantially cylindrical main body 1 and having two portions 2a, 2b symmetrical with respect to a plane orthogonal to the longitudinal axis of said main body 1. The first portion 2a has, following the longitudinal axis from the outside towards the central part of the connection device, an inlet chamfer 3 and an extreme cylindrical surface 4 in which a first circular groove 4a is formed. The first portion 2a is extended by a frustoconical chamber 5 whose large base partially delimited by a shoulder 6 is located towards the center of the connection device. A longitudinal rib 7 also projects inside the frustoconical chamber 5. The shoulder 6 is then extended by a central cylindrical bearing in which is also formed a second circular groove 8a. This central cylindrical bearing surface 8 ends in a circular central rib 9 separating the two portions 2a and 2b of the cylindrical body 1 The two portions 2a, 2b have a symmetrical configuration. The connection device according to the invention also comprises O-rings 1 0 which are received in the internal grooves 4a and 8a. The connection device according to the invention also comprises a split ring 1 1 disposed in each frustoconical chamber 5. This split ring 1 1 has at its slot two ends 1 1 a, 1 1 b opposite which rests on the longitudinal rib 7 thus allowing said split ring 1 1 to slide longitudinally along said longitudinal rib 7 and to block in rotation said split ring 1 1 relative to the main body 1 The ring 1 1 is thus arranged free, along the longitudinal axis yy 'of the connection device, in the frustoconical chamber 5 Its positioning at the interior of the frustoconical chamber 5 is only determined by the end of a tube 20, during its movement in the direction of engagement or in the opposite direction to the direction of engagement in the connection device A rotation of the main body 1 or more precisely of the connection device therefore also rotates the split ring 1 1 The latter is advantageously extendable by spreading the ends 1 1 a and 1 1 b more or less, as is the case during the introduction of a tube 20 into the connection device and passing through the split ring 1 1
La bague 1 1 est réalisée par exemple avec une matière plastique ou métallique dont l'élasticité permet en partant d 'un état non contraint ou non déformé de la bague 1 1 dans lequel son diamètre intérieur est plus faible que le diamètre extérieur des tubes 20, de se déformer élastiquement et de s 'agripper sur ledit tube 20 lors de son introduction dans ledit dispositifThe ring 1 1 is made for example with a plastic or metallic material whose elasticity allows, starting from an unstressed or non-deformed state of the ring 1 1 in which its internal diameter is smaller than the external diameter of the tubes 20 , to deform elastically and to grip onto said tube 20 during its introduction into said device
Extérieurement, le corps principal 1 peut être pourvu de nervures longitudinales externes 1 a, 1 b destinées à faciliter la préhension et la manipulation du dispositif de connexion II est ainsi plus facile de tourner le dispositif de connexion conforme à l'invention de façon manuelle avec ou sans outil spécifiqueExternally, the main body 1 can be provided with external longitudinal ribs 1 a, 1 b intended to facilitate gripping and handling of the connection device. It is thus easier to turn the connection device according to the invention manually with or without specific tool
Le corps 1 présente avantageusement une zone centrale particulièrement résistante Cette zone centrale, localisée entre les chambres tronconiques 5, présentant une épaisseur accrue et les nervures externes longitudinales 1 a permet de renforcer le corps 1 , lequel peut résister à des pressions élevées, par exemple de l'ordre de 50 bars, selon un mode de réalisation donné La bague fendue 1 1 est pourvue intérieurement d'un filetage 1 2 présentant un diamètre plus petit que le diamètre extérieur des tubes 20 destinés a être raccordés Les bagues fendues 1 1 viennent donc prendre appui sur les tubes destinés a être raccordes des que ces derniers sont engagés dans le dispositif de connexion Les bagues fendues 1 1 , disposées respectivement dans les chambres tronconiques 5 des portions 2a et 2b présentent un filetage en sens inverse Le corps principal 1 étant réalisé par exemple par une soudure au miroir de deux demi-coquilles obtenues par exemple par injection de matière plastique, génère donc que des bavures le long du plan de joint desdites demi-coquilles. Afin que ces bavures ne gênent pas la bague fendue 1 1 dans son déplacement dans la chambre tronconique 5, ladite bague fendue 1 1 est pourvue de deux saignées 1 3 longitudinales diamétralement opposées qui viennent se positionner sur ce plan de joint de manière à écarter tout problème de serrage ou de coincement éventuel.The body 1 advantageously has a particularly resistant central zone This central zone, located between the frustoconical chambers 5, having an increased thickness and the longitudinal external ribs 1 a makes it possible to reinforce the body 1, which can withstand high pressures, for example of the order of 50 bars, according to a given embodiment The split ring 1 1 is provided internally with a thread 1 2 having a diameter smaller than the outside diameter of the tubes 20 intended to be connected The split rings 1 1 therefore come bear on the tubes intended to be connected as soon as they are engaged in the connection device The split rings 1 1, disposed respectively in the frustoconical chambers 5 of the portions 2a and 2b have a thread in the opposite direction The main body 1 being produced for example by mirror welding of two half-shells obtained for example by injection of plastic material, therefore generates only burrs along the joint plane of said half-shells. So that these burrs do not interfere with the split ring 1 1 in its movement in the frustoconical chamber 5, said split ring 1 1 is provided with two diametrically opposite longitudinal grooves 1 3 which are positioned on this joint plane so as to remove all tightening problem or possible jamming.
Selon un mode de réalisation, le corps 1 est constitué de deux demi-coquilles moulées identiques. Aux fins de l'assemblage, l'une des demi-coquilles est pivotée de 1 80 ° selon un axe transversal à l'axe longitudinal y-y', pour former une deuxième chambre tronconique 5 pourvue d 'une nervure longitudinale 7. Chaque demi-coquille ne présente donc qu'une seule nervure longitudinale 7 (figure 1 , par exemple) La bague fendue 1 1 présente avantageusement une surface périphérique 14 de forme convexe. Cette surface périphérique 14 présente par exemple une courbure du type sphérique permettant un serrage de ladite bague 1 1 sans coincement dans la chambre tronconique 5. Le serrage de ladite bague fendue 1 1 est bien évidemment obtenu par un déplacement longitudinal de ladite bague fendue 1 1 le long de la nervure longitudinale 7 en partant de la grande base de cône matérialisée par l'épaulement 6.According to one embodiment, the body 1 consists of two identical molded half-shells. For the purposes of assembly, one of the half-shells is pivoted by 180 ° along an axis transverse to the longitudinal axis y-y ', to form a second frustoconical chamber 5 provided with a longitudinal rib 7. Each half-shell therefore has only one longitudinal rib 7 (Figure 1, for example) The split ring 1 1 advantageously has a peripheral surface 14 of convex shape. This peripheral surface 14 has for example a curvature of the spherical type allowing a tightening of said ring 1 1 without jamming in the frustoconical chamber 5. The tightening of said split ring 1 1 is obviously obtained by a longitudinal displacement of said split ring 1 1 along the longitudinal rib 7 starting from the large cone base materialized by the shoulder 6.
Les figures 6 et 7 représentent un autre exemple de réalisation de la bague 1 1 . La figure 7 est une vue selon la flèche F de la figure 6. La bague 1 1 comporte des rainures 14a longitudinales, s'étendant sur une partie de sa longueur en partant d'une extrémité 1 4b. Les rainures 14a traversent complètement l'épaisseur radiale de la bague 1 1 et s'ouvrent vers l'extérieur à l'extrémité 14b Les rainures 14a sont réparties radialement de manière à délimiter un ensemble de languettes radiales 14c du côté de l'extrémité 14b, chaque languette radiale 14c étant ainsi délimitée par une paire de rainures 14a. Une partie de la longueur de la bague 1 1 partant de l'autre extrémité 14d, opposée à l'extrémité 14b, relie l'ensemble des languettes radiales 1 4c La bague 1 1 peut ainsi s'adapter parfaitement sur des tubes légèrement déformés ou ovalisés, grâce à la présence des rainures 14a et des languettes radiales 1 4c. Ces dernières facilitent donc l'introduction du tube 20 dans la bague 1 1 , notamment quand ledit tube 20 présente une section qui n'est plus parfaitement circulaire.Figures 6 and 7 show another embodiment of the ring 1 1. Figure 7 is a view along arrow F of Figure 6. The ring 1 1 has longitudinal grooves 14a, extending over a portion of its length from an end 1 4b. The grooves 14a completely pass through the radial thickness of the ring 1 1 and open outwards at the end 14b The grooves 14a are distributed radially so as to delimit a set of radial tongues 14c on the side of the end 14b , each radial tongue 14c thus being delimited by a pair of grooves 14a. Part of the length of the ring 1 1 starting from the other end 14d, opposite the end 14b, connects all of the radial tabs 1 4c The ring 1 1 can thus be perfectly adapted to slightly deformed tubes or ovalized, thanks to the presence of grooves 14a and radial tongues 1 4c. The latter therefore facilitate the introduction of the tube 20 into the ring 1 1, in particular when said tube 20 has a section which is no longer perfectly circular.
La figure 2 représente une vue en coupe du dispositif de connexion conforme a l'invention dans laquelle la bague fendue 1 1 de gauche c'est-à-dire celle située dans la portion 2a prend appui contre l'épaulement 6 et sur la nervure longitudinale 7 Dans la portion 2b on a matérialisé par un trait mixte un tube 20 engagé dans le dispositif de connexion et plus précisément dans la portion 2b Le tube 20 est engagé pour venir en butée contre l'épaulement que constitue la nervure circulaire centrale 9 et traverse donc la bague fendue 1 1 Cette dernière s'écarte donc légèrement pour venir en appui ou se rapprocher de la paroi interne 5a de la chambre tronconique 5. C'est la surface périphérique extérieure 14 de la bague fendue 1 1 qui vient ainsi vers le cône forme par la chambre tronconique Lorsque le tube 20 est introduit dans le dispositif de connexion, l'ecartement de la bague fendue 1 1 provoque une amorce ou un début d'incrustation du filetage interne 1 2 dans le matériau constitutif dudit tube 20. Le filetage intérieur 1 2 des bagues fendues 1 1 présente par exemple une section à angles vifs du type triangle rectangle pour former des crans hélicoïdaux s'opposant à tout retrait du tube 20 lorsque ledit filetage interne 1 2 s'est incrusté dans la périphérie dudit tube 20.Figure 2 shows a sectional view of the connection device according to the invention in which the split ring 1 1 on the left, that is to say that located in the portion 2a bears against the shoulder 6 and on the rib longitudinal 7 In the portion 2b, a line 20 has been shown by a dashed line engaged in the connection device and more specifically in the portion 2b The tube 20 is engaged to abut against the shoulder formed by the central circular rib 9 and therefore crosses the split ring 1 1 The latter therefore deviates slightly to come into abutment or approach the internal wall 5a of the frustoconical chamber 5. It is the outer peripheral surface 14 of the split ring 1 1 which thus comes towards the cone formed by the frustoconical chamber When the tube 20 is introduced into the connection device, the spacing of the split ring 1 1 causes a initiation or the beginning of incrustation of the internal thread 1 2 in the mast component of said tube 20. The internal thread 1 2 of the split rings 1 1 has for example a section with sharp angles of the right triangle type to form helical notches opposing any withdrawal of the tube 20 when said internal thread 1 2 s' is embedded in the periphery of said tube 20.
Un exemple d'un tel filetage interne 1 2est représenté par exemple à la figure 3.An example of such an internal thread 1 2 is represented for example in FIG. 3.
La figure 4 montre un raccordement terminé entre deux tubes 20 grâce au dispositif de connexion . La figure 4 montre un raccordement terminé dans lequel les tubes 20 sont définitivement immobilisés à l'aide du dispositif de connexion. Un léger mouvement de traction sur chaque tube 20 permet d'entraîner vers l'extérieur les bagues fendues 1 1 , lesquelles viennent se resserrer davantage autour des tubes 20 par la coopération entre la paroi interne 5a des chambres tronconiques 5 et des surfaces extérieures 14FIG. 4 shows a completed connection between two tubes 20 thanks to the connection device. FIG. 4 shows a completed connection in which the tubes 20 are definitively immobilized using the connection device. A slight pulling movement on each tube 20 makes it possible to drive out the split rings 1 1, which come to tighten further around the tubes 20 by the cooperation between the internal wall 5a of the frustoconical chambers 5 and the external surfaces 14
On obtient ainsi une incrustation accrue des crans hélicoïdaux 1 5 dans la matière constitutive des tubes 20 pou aboutir en définitive à un blocage complet des extrémités des tubes 20 dans le dispositif de connexion Avec le dispositif de connexion conforme à l'invention, les extrémités des tubes 20, après avoir subi un léger mouvement de retrait pour le blocage (cf. figure 4), restent dans la zone localisée entre les chambres tronconiques 5, à savoir la zone renforcée.There is thus obtained an increased inlaying of the helical notches 1 5 in the material of the tubes 20 for ultimately leading to complete blocking of the ends of the tubes 20 in the connection device With the connection device according to the invention, the ends of the tubes 20, after having undergone a slight withdrawal movement for blocking (see Figure 4), remain in the area located between the frustoconical chambers 5, namely the reinforced area.
La figure 5 représente une vue en coupe selon la ligne V-V de la figure 4. Le raccordement de deux tubes 20 s'effectue ainsi en emmanchant parallèlement à l'axe longitudinal y-y' (cf. figure 2) les extrémités desdits tubes 20. La mise en butée contre la nervure circulaire centrale 9 est réalisée par un mouvement de rotation du corps principal 1 dans le sens opposé à celui correspondant au désaccouplement. Ce dernier est obtenu en imprimant au corps principal 1 un mouvement de rotation de manière à libérer progressivement les extrémités des tubes 20 des filetages internes 1 2. Ceci est possible grâce aux nervures longitudinales 7 qui permettent d'entraîner en rotation les bagues fendues 1 1 . Les extrémités des tubes 20 sont ainsi simultanément repoussées vers l'extérieur du dispositif de connexion. Le désaccouplement complet est obtenu après un certain nombre de rotations du corps 1 et ce grâce au filetage interne 1 2 en sens opposé des deux bagues fendues 1 1 .5 shows a sectional view along the line VV of Figure 4. The connection of two tubes 20 is thus effected by engaging parallel to the longitudinal axis yy '(see Figure 2) the ends of said tubes 20. The abutting against the central circular rib 9 is achieved by a rotational movement of the main body 1 in the opposite direction to that corresponding to the uncoupling. The latter is obtained by imparting to the main body 1 a rotational movement so as to gradually release the ends of the tubes 20 from the internal threads 1 2. This is possible thanks to the longitudinal ribs 7 which make it possible to rotate the split rings 1 1 . The ends of the tubes 20 are thus simultaneously pushed towards the outside of the connection device. The complete uncoupling is obtained after a certain number of rotations of the body 1 and this thanks to the internal thread 1 2 in the opposite direction of the two split rings 1 1.
La connexion du dispositif de connexion avec les extrémités du tube 20 s'effectue en engageant chaque extrémité dans la bague 1 1 correspondante, éventuellement avec une rotation relative du tube 20 par rapport à la bague 1 1 , puis, en fin d'engagement, en exerçant une traction sur le tube 20 pour déplacer la bague 1 1 dans sa chambre tronconique 5 et obtenir un serrage complémentaire sur le tube 20.The connection of the connection device with the ends of the tube 20 is effected by engaging each end in the corresponding ring 1 1, possibly with a relative rotation of the tube 20 relative to the ring 1 1, then, at the end of engagement, by exerting traction on the tube 20 to move the ring 11 in its frustoconical chamber 5 and obtain additional tightening on the tube 20.
Le dispositif de connexion conforme à l'invention trouve son application pour le raccordement de tube en matériau plastique, par exemple en PEHD, PP ou PVC. Le dispositif de connexion conforme à l'invention présente l'avantage d'être démontable et ce sans outil spécifique. Le démontage manuel est envisageable sans problème. En outre, aucune préparation spécifique des extrémités de tubes 20 n'est nécessaire pour arriver à leur raccordement. Le dispositif de connexion présente également une grande résistance mécanique sans augmenter son encombrement. L'utilisation de machine automatique de pose est donc parfaitement indiquée.The connection device according to the invention finds its application for the connection of plastic tubing, for example HDPE, PP or PVC. The connection device according to the invention has the advantage of being removable and without any specific tool. Manual disassembly is possible without problem. In addition, no specific preparation of the tube ends 20 is necessary to arrive at their connection. The connection device also has great mechanical strength without increasing its size. The use of an automatic laying machine is therefore perfectly indicated.
Par ailleurs, le dispositif de connexion conforme à l'invention est intéressant dans la mesure où le raccordement de deux tubes 20 se fait de façon extrêmement rapide, et la fiabilité d'un tel raccordement n'en est pas altérée. En effet, la présence de la nervure circulaire centrale 9 permet d'indiquer à l'utilisateur d'un tel raccordement jusqu'où il faut introduire les extrémités des tubes 20 pour obtenir un raccordement satisfaisant L'engagement des extrémités des tubes 20 se fait par conséquent jusqu'à la mise en butée desdites extrémités contre la nervure circulaire centrale 9 En outre, les portées cylindriques 4 et 8 longitudinales permettent de réaliser un guidage longitudinal des tubes 20 et leurs dimensions relativement importantes permettent d'assurer une étanchéité même sous de forts rayons de courbure auxquels peut être soumis l'ensemble constitué de tubes 20 et du dispositif de connexion Les joints 1 0, par exemple toriques, permettent d'assurer cette étanchéité en coopération avec les portées 4 et 8Furthermore, the connection device according to the invention is advantageous insofar as the connection of two tubes 20 takes place extremely quickly, and the reliability of such a connection is not impaired. Indeed, the presence of the central circular rib 9 makes it possible to indicate to the user of such a connection as far as it is necessary to introduce the ends of the tubes 20 to obtain a satisfactory connection. The ends of the tubes 20 are engaged therefore until the abutment of said ends against the central circular rib 9 In addition, the longitudinal cylindrical surfaces 4 and 8 allow a longitudinal guidance of the tubes 20 and their relatively large dimensions ensure a seal even under strong radii of curvature to which the assembly consisting of tubes 20 and the connection device can be subjected The seals 1 0, for example O-rings, make it possible to ensure this seal in cooperation with the bearing surfaces 4 and 8
C'est en particulier le joint 1 0 logé dans la rainure circulaire 4a de la portée extrême 4 qui permet d'obtenir des rayons de courbures progressifs pour les tubes 20 raccordés, en conservant l'étanchéité et en retardant l'apparition de « l'effet de paille » pour lesdits tubes 20It is in particular the seal 1 0 housed in the circular groove 4a of the extreme bearing surface 4 which makes it possible to obtain progressive radii of curvature for the tubes 20 connected, retaining the seal and delaying the appearance of "l 'straw effect' for said tubes 20
La forme du dispositif de connexion et plus particulièrement la forme fuselée du corps 1 , permet également son utilisation dans un toron de tubes, ce qui est particulièrement avantageux. Son utilisation sur des machines d'enfouissement monotube et multitubes est ainsi envisageable sans difficulté. The shape of the connection device and more particularly the tapered shape of the body 1, also allows its use in a strand of tubes, which is particularly advantageous. Its use on single-tube and multi-tube landfill machines is thus possible without difficulty.

Claims

REVENDICATIONS
1 / Dispositif de connexion permettant de raccorder de manière étanche deux extrémités de tubes (20) , comportant un corps (1 ), sensiblement cylindrique et présentant deux portions (2a, 2b) symétriques et opposées pour l'engagement des extrémités de tubes (20) respectives, chacune des portions (2a, 2b) comportant des moyens d'accrochage pour retenir le tube dans le raccord, et des moyens d'étanchéité pour un tel raccordement, les moyens d 'accrochage de chaque portion (2a, 2b) comprenant . - une chambre tronconique (5) ménagée dans chaque portion et dont la grande base se situe vers le centre du dispositif ,1 / Connection device for sealingly connecting two ends of tubes (20), comprising a body (1), substantially cylindrical and having two symmetrical and opposite portions (2a, 2b) for engaging the ends of tubes (20 ) respective, each of the portions (2a, 2b) comprising hooking means for retaining the tube in the fitting, and sealing means for such a connection, the hooking means of each portion (2a, 2b) comprising . - a frustoconical chamber (5) formed in each portion and whose large base is located towards the center of the device,
- une nervure longitudinale (7) faisant saillie dans la chambre tronconique (5) ,- a longitudinal rib (7) projecting into the frustoconical chamber (5),
- et une bague ( 1 1 ) fendue dont les extrémités ( 1 1 a, 1 1 b) sont disposées de part et d'autre de la nervure longitudinale (7), ladite bague (1 1 ) étant pourvue d'un filetage interne ( 1 2), la forme extérieure de ladite bague ( 1 1 ), étant choisie pour qu'au moins une partie de sa surface périphérique ( 14) vienne en appui contre la chambre tronconique (5) après l'engagement de l'extrémité du tube (20), de manière à provoquer le blocage du tube (20) par toute traction sur ledit tube en sens inverse à son sens d'engagement. caractérisé en ce que la bague ( 1 1 ) est d'une part disposée libre dans la chambre tronconique (5) et d'autre part, deformable élastiquement, le diamètre intérieur de la bague (1 1 ) étant plus petit que le diamètre extérieur du tube (20) dans un état non contraint ou déformé de ladite bague ( 1 1 ), de manière à se déformer élastiquement et à s'agripper sur le tube (20) lors de l'introduction dudit tube (20)- And a split ring (1 1) whose ends (1 1 a, 1 1 b) are arranged on either side of the longitudinal rib (7), said ring (1 1) being provided with an internal thread (1 2), the external shape of said ring (1 1), being chosen so that at least part of its peripheral surface (14) comes to bear against the frustoconical chamber (5) after the engagement of the end of the tube (20), so as to cause the blocking of the tube (20) by any traction on said tube in the opposite direction to its direction of engagement. characterized in that the ring (1 1) is on the one hand arranged free in the frustoconical chamber (5) and on the other hand, elastically deformable, the inside diameter of the ring (1 1) being smaller than the outside diameter of the tube (20) in an unstressed or deformed state of said ring (1 1), so as to deform elastically and to grip on the tube (20) during the introduction of said tube (20)
2/ Dispositif de connexion selon la revendication 1 , caractérisé en ce que les bagues ( 1 1 ) ont des pas inversés 3/ Dispositif de connexion selon la revendication 1 ou 2, caractérisé en ce que le filetage interne ( 1 2) de chaque bague ( 1 1 ) présente une arête acérée apte à s'insérer dans la périphérie du tube (20)2 / connection device according to claim 1, characterized in that the rings (1 1) have reversed steps 3 / connection device according to claim 1 or 2, characterized in that the internal thread (1 2) of each ring (1 1) has a sharp edge capable of fitting into the periphery of the tube (20)
4/ Dispositif de connexion selon l' une quelconque des revendications 1 à 3, caractérisé en ce que le corps ( 1 ) comporte une nervure circulaire centrale (9) dont les faces diamétrales forment face de butée pour la face en bout de chaque tube (20) 5/ Dispositif de connexion selon l' une quelconque des revendications 1 à 4, caractérisé en ce que chaque portion du corps ( 1 ) présente en amont et en aval de sa chambre tronconique (5) une portée cylindrique (4, 8) pourvue d'une rainure circulaire (4a, 8a) respective, pour un joint ( 1 0) .4 / Connection device according to any one of claims 1 to 3, characterized in that the body (1) has a central circular rib (9) whose diametrical faces form abutment face for the end face of each tube ( 20) 5 / Connection device according to any one of claims 1 to 4, characterized in that each portion of the body (1) has upstream and downstream of its frustoconical chamber (5) a cylindrical surface (4, 8) provided with 'a respective circular groove (4a, 8a), for a seal (1 0).
6/ Dispositif de connexion selon la revendication 3, caractérisé en ce que le filetage interne ( 1 2) présente une arête acérée pour former des crans ( 1 5) hélicoïdaux s'opposant à tout retrait du tube (20) .6 / Connection device according to claim 3, characterized in that the internal thread (1 2) has a sharp edge to form notches (1 5) helical opposing any withdrawal of the tube (20).
7/ Dispositif de connexion selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la surface périphérique ( 14) de la bague ( 1 1 ) venant en contact avec la chambre tronconique (5) est convexe.7 / Connection device according to any one of claims 1 to 6, characterized in that the peripheral surface (14) of the ring (1 1) coming into contact with the frustoconical chamber (5) is convex.
8/ Dispositif de connexion selon l' une quelconque des revendications 1 à 7, caractérisé en ce que le corps ( 1 ) est composé de deux demi-coquilles assemblées par soudure suivant leur plan diamétral après mise en place des bagues ( 1 1 ) dans les chambres tronconiques (5).8 / A connection device according to any one of claims 1 to 7, characterized in that the body (1) is composed of two half-shells assembled by welding along their diametrical plane after fitting the rings (1 1) in the frustoconical chambers (5).
9/ Dispositif de connexion selon l' une quelconque des revendications 1 à 8, caractérisé en ce que le corps ( 1 ) a une forme extérieure fuselée et comporte une gorge centrale dans laquelle sont ménagés des crans longitudinaux ( 1 a) pour l'entraînement en rotation, le cas échéant avec un outil.9 / Connection device according to any one of claims 1 to 8, characterized in that the body (1) has a tapered outer shape and has a central groove in which are provided longitudinal notches (1 a) for the drive in rotation, if necessary with a tool.
10/ Dispositif de connexion selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la bague ( 1 1 ) présente des rainures ( 14a) s'étendant sur une partie de sa longueur en partant d 'une extrémité ( 14b) et réparties radialement de manière à délimiter entre chaque paire de rainures ( 14a), une languette radiale ( 14c) du côté de l'extrémité ( 14b) .10 / Connection device according to any one of claims 1 to 9, characterized in that the ring (1 1) has grooves (14a) extending over a part of its length starting from one end (14b) and distributed radially so as to delimit between each pair of grooves (14a), a radial tongue (14c) on the end side (14b).
1 1 / Conduit d'installation souterrain ou subaquatique comportant au moins deux tubes d'installation et au moins un dispositif de connexion conforme à l'une quelconque des revendications 1 à 1 0 1 1 / Underground or underwater installation conduit comprising at least two installation tubes and at least one connection device according to any one of claims 1 to 1 0
EP01907666A 2000-01-26 2001-01-22 Connecting device for conduits Withdrawn EP1250548A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0001066 2000-01-26
FR0001066A FR2804196B1 (en) 2000-01-26 2000-01-26 CONNECTION DEVICE FOR CONDUITS
PCT/FR2001/000204 WO2001055631A1 (en) 2000-01-26 2001-01-22 Connecting device for conduits

Publications (1)

Publication Number Publication Date
EP1250548A1 true EP1250548A1 (en) 2002-10-23

Family

ID=8846385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01907666A Withdrawn EP1250548A1 (en) 2000-01-26 2001-01-22 Connecting device for conduits

Country Status (10)

Country Link
EP (1) EP1250548A1 (en)
CN (1) CN1396997A (en)
AU (1) AU2001235579A1 (en)
BR (1) BR0101637A (en)
CA (1) CA2342733A1 (en)
FR (1) FR2804196B1 (en)
IL (1) IL150861A0 (en)
MX (1) MXPA01002851A (en)
TN (1) TNSN01010A1 (en)
WO (1) WO2001055631A1 (en)

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NL1029414C2 (en) * 2005-07-03 2007-01-19 Widee Bv Coupling is between two bodies, which comprises elastically deformable cutting ring with a screw thread forming cutting lips
WO2007004861A1 (en) * 2005-07-03 2007-01-11 Widee B.V. Coupling between two bodies comprising an elastically deformable cutting ring with a screw thread forming cutting lips
DE202005021649U1 (en) * 2005-12-16 2009-02-12 Hawle Armaturen Gmbh Train protection system for pipe connections with anti-rotation clamp
GB2439148A (en) * 2006-06-16 2007-12-19 Wellstream Int Ltd Pipe armour wires support in terminating collar
PT2059707E (en) * 2006-09-08 2011-02-07 Lindab Ab Arrangement for connecting tube elements in a ventilation duct system
US9611958B1 (en) 2007-01-05 2017-04-04 Zurn Industries, Llc Combination mechanical/fusion pipe fitting with push connect coupling arrangement
RU2472057C2 (en) * 2007-11-11 2013-01-10 Плассим Фиттингс Лтд. Clamping ring for fitting
CN103148295A (en) * 2012-12-10 2013-06-12 江苏双腾管业有限公司 Quick socket pipe fitting
ES2505417B1 (en) * 2014-07-31 2015-05-11 Jimten, S.A. Coupling device between pipes
CN106090472B (en) * 2016-08-09 2018-12-07 河南柴油机重工有限责任公司 A kind of diesel engine oil-way assembling pipe joint
CN108749626A (en) * 2018-06-27 2018-11-06 友邦电气(平湖)股份有限公司 The end connector of AC charging rifle
CN113291997B (en) * 2021-05-11 2022-05-27 中国电建集团山东电力建设第一工程有限公司 Device and method for quickly penetrating and installing linear Fresnel ultra-long-distance heat collection vacuum tube

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US2017994A (en) * 1932-01-12 1935-10-22 Ferdinand J Spang Pipe joint
FR1323353A (en) * 1962-05-25 1963-04-05 Connecting piece, or connection, for smooth pipes, in particular for plastic pipes
IL125370A0 (en) * 1997-08-23 1999-03-12 Friatec Ag Plug-in coupler

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Title
See references of WO0155631A1 *

Also Published As

Publication number Publication date
MXPA01002851A (en) 2005-02-17
IL150861A0 (en) 2003-02-12
AU2001235579A1 (en) 2001-08-07
TNSN01010A1 (en) 2003-04-03
CN1396997A (en) 2003-02-12
FR2804196B1 (en) 2002-09-06
BR0101637A (en) 2002-04-23
WO2001055631A1 (en) 2001-08-02
FR2804196A1 (en) 2001-07-27
CA2342733A1 (en) 2001-07-26

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