EP1099074A1 - Device for connecting a tubular metal duct on a tap - Google Patents

Device for connecting a tubular metal duct on a tap

Info

Publication number
EP1099074A1
EP1099074A1 EP00936945A EP00936945A EP1099074A1 EP 1099074 A1 EP1099074 A1 EP 1099074A1 EP 00936945 A EP00936945 A EP 00936945A EP 00936945 A EP00936945 A EP 00936945A EP 1099074 A1 EP1099074 A1 EP 1099074A1
Authority
EP
European Patent Office
Prior art keywords
nut
intended
base
ring
tubular pipe
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Withdrawn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
EP00936945A
Other languages
German (de)
French (fr)
Inventor
François Berte
Gérard PARMENTIER
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.)
Chuchu-Decayeux Ets
Francel SAS
Original Assignee
Chuchu-Decayeux Ets
Francel SAS
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 Chuchu-Decayeux Ets, Francel SAS filed Critical Chuchu-Decayeux Ets
Publication of EP1099074A1 publication Critical patent/EP1099074A1/en
Withdrawn legal-status Critical Current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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/10—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered
    • F16L19/12—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered with additional sealing means

Definitions

  • the invention relates to a device for connecting a tubular pipe to a tap, these elements being used in particular in a natural gas distribution network.
  • connection device is more particularly intended for metallic tubular conduits, in particular steel.
  • tubular pipes Today there are essentially two types of tubular pipes: metal pipes, in particular steel pipes, and pipes made of polymer material, especially polyethylene. Pipelines made of polymer material have many advantages. Indeed, they do not require welding, they are less expensive to implement and resist corrosion, without requiring any special treatment. Each type of tubular pipe is associated with a specific tap and connection device. This complicates the task of operators, inventory management and therefore increases costs.
  • the invention aims to overcome these drawbacks by proposing a device for connecting a metal tubular pipe to a tap designed for a tubular pipe made of polymer material, and this by using parts commonly used to connect a tubular pipe made of polymer material to specific tap.
  • connection device makes it possible to use the same tap, both for metal tubular pipes and for tubular pipes made of polymer material, while limiting the number of parts specific to metal tubular pipes.
  • the invention therefore relates to a device for connecting a tubular pipe to a tap, comprising a base secured to said tap, a nut tightening intended to be screwed onto the base and sealing means intended to be housed in an annular space defined between the base and the nut, these sealing means being intended to be compressed axially by the screwing of the nut on the base to fill the annular space by radial deformation, characterized in that the device further comprises a hollow adaptation piece intended to receive a metallic tubular pipe and to be disposed in the base and the nut for limit inward the radial deformation of the sealing means.
  • the nut is mounted movable in rotation on said part and secured in translation.
  • the adaptation piece advantageously comprises a first annular groove opening onto its external wall, while the nut comprises a second annular groove opening onto its internal wall, an elastic ring being intended to be housed in the first and second groove, when mounting the nut on the adapter piece.
  • the adapter piece advantageously comprises a recess, in particular conical, with an internal thread for the screwing of the metal pipe.
  • the adapter piece has, on its outer surface, at least two substantially flat parts, intended to facilitate contact between said piece and a clamping tool, such as pliers.
  • the clamping nut advantageously comprises a chamfer at the end by which it is intended to be mounted on said adapter piece.
  • the sealing means comprise a conical ring and a conical seal of complementary shape intended to be mounted in said ring.
  • the conical ring advantageously comprises an external thread intended to cooperate with an internal thread of the nut.
  • connection device advantageously comprises protection means, in particular constituted by an insulating sleeve which is fixed on the clamping nut and supports a metal tube.
  • FIG. 1 is an exploded view in section of a connection device suitable for a tubular pipe made of polymer material
  • FIG. 2a, 2b and 2c illustrate three stages of mounting a tubular pipe made of polymer material and the connection device illustrated in Figure 1;
  • - Figure 3 is an exploded view in section of a connection device according to one invention for a metallic tubular pipe;
  • Figures 4a, 4b and 4c show three stages of mounting a metal tubular pipe and a connection device as illustrated in Figure 3;
  • FIG. 5 is a sectional view illustrating protection means of the connection device according to the invention, as shown in Figures 3 and 4.
  • the elements common to the different figures will be designated by the same references.
  • Figure 1 partially illustrates the body 1 of a valve with a base 10.
  • a valve of this type is commonly used in association with a tubular pipe made of polymer material, in particular polyethylene.
  • the base 10 has a substantially cylindrical shape with a thread 11 on its outer wall.
  • connection device intended for a tubular pipe made of polymer material also comprises a ferrule 2 with a cylindrical barrel 20 whose outer surface is notched and a flange which extends the barrel 20 at one of its ends.
  • This connection device also comprises a conical seal 3 and a clamping ring 4 also conical.
  • the inner surface 40 of the ring 4 has a shape complementary to the outer surface 30 of the conical seal.
  • the seal 3 and the ring 4 constitute sealing means.
  • connection device comprises a tightening nut 5.
  • This nut 5 comprises a first recess 50 internally threaded which opens on one face of the nut ending in a chamfer 54 and a second recess 51 which opens on the opposite face of the nut and has an internal thread 52, intended to cooperate with the thread provided on the outer wall 41 of the ring 4.
  • the tightening nut 5 also has an annular groove 53 which opens into the threaded recess 50.
  • this annular groove is not used when mounting a tubular pipe made of polymer material and could therefore not be provided on the nut 5.
  • this annular groove it is preferable to provide this annular groove on all the clamping nuts, these then being suitable for the two types of tubular pipes .
  • valve body 1, the ferrule 2, the seal 3, the ring 4 and the tightening nut 5 are conventionally used in connection devices for tubular pipes made of polymer material.
  • FIGS. 2a to 2c describe the mounting of a tubular pipe 6 made of polymer material on the body 1 of the valve, using the connection device described with reference to the figure.
  • the assembly consists first of all of screwing the tightening nut 5 onto the tubular pipe 6, the internal thread of
  • clamping ring 4 and the conical seal 3 are then successively threaded onto the tubular pipe 6.
  • the clamping ring will be screwed into
  • the ferrule 2 is then pressed inside the tubular duct 6, its flange 21 coming to bear on one end of the tubular duct 6.
  • the notched outer surface 20 of the ferrule 2 engages with the inner surface 61 of the tubular pipe, which ensures the joining of the two parts.
  • the ferrule 2 provides the mechanical strength of the tubular pipe 6 made of polymer material.
  • the assembly is finished by placing the tubular pipe 6 with the ferrule 2 inside the cylindrical base 10, then by screwing the tightening nut on the base 10, thanks to the cooperation of the internal thread 52 of 1 ' recess 51 and the thread 11 provided on the outer wall of the base 10.
  • the seal 3 can penetrate into the ring 4.
  • the seal 3 and the ring 4 are housed in a defined annular space between the base 10 and the nut 5, this annular space also being delimited by the tubular pipe 6.
  • FIG. 3 illustrates a connection device according to the invention intended for a metallic tubular pipe, in particular made of steel.
  • valve body 1 with its base 10 and its external thread 11
  • conical seal 3 with its conical external surface 30
  • clamping ring 4 with its conical internal surface 40
  • nut clamp 5 with its recess 50 internally threaded and comprising an annular groove 53 and another recess 51 with an internal thread 52.
  • the presence of the annular groove 53 in one recess 50 is necessary for mounting the connection device.
  • the recess 50 is not necessarily threaded.
  • a nut 5 is chosen with a threaded recess 50 so that this nut 5 can also be used for mounting a tubular pipe made of polymer material.
  • connection device also includes an elastic ring 7, as well as an adapter part 8, intended to receive a metallic tubular pipe 9, in particular made of steel.
  • This adaptation piece 8 is hollow. It comprises a recess 80 with an internal thread 81 into which the end of the metallic tubular pipe 9 can be screwed, as shown in FIG. 4a.
  • the adaptation piece 8 consists of two substantially cylindrical portions and of different diameters.
  • the first portion 82 includes the recess 80 for the tube 9, while the second portion 83 has a diameter less than that of the portion 82.
  • the diameter of the portion 83 can be chosen to be substantially equal to that of the tubular pipe. made of polymer material used with nut 5. Thanks to this reduction in diameter, the connection according to the invention can use the same clamping nut as that which is suitable for a tubular pipe made of polymer material. However, this characteristic is not essential and the adapter piece 8 could have a constant outside diameter.
  • annular groove 84 On the outer surface of the cylindrical portion 83 is provided an annular groove 84.
  • this annular groove 84 is intended to receive the rod 7.
  • This rod allows the latching of the nut 5 on the adaptation piece 8.
  • the nut 5 is threaded on the cylindrical portion 83.
  • the elastic ring 7 When it is put in place, it forces the elastic ring 7 to penetrate into the annular groove 84 provided on the adapter piece, this ring 7 then expanding in the annular groove 53 provided in the nut for ensure a non-removable cooperation between the adaptation piece 8 and the nut 5.
  • connection device The mounting of the connection device is continued by screwing the clamping ring 4 into the nut 5 and then threading the seal 3 onto the adapter piece 8.
  • FIG. 4a shows that the screwing of the nut 5 on the base 10 makes it possible to compress the gasket 3 and the ring 4 axially which thus seal the connection device.
  • the adaptation piece 8 is not rotated, which avoids imposing a movement on the tubular pipe 9 screwed into this piece 8.
  • the adapter piece preferably comprises at least two flat areas (not shown), for example on the portion 82. These flat parts are provided so that a clamping tool such as a clamp can easily keep the adapter, when screwing a metallic tubular pipe 9 into the recess 80.
  • connection device according to the invention intended for a metal tubular pipe, actually has the advantage of allowing connection between a metal tubular pipe and a tap body provided for a tubular pipe made of polymer material, constituent elements of this connection device which can also be used for a tubular pipe made of a polymer material.
  • connection device avoids any welding operation of the metal tubular pipe.
  • assembly of the tubular pipe, the adapter part and the nut can be carried out beforehand, which facilitates the work of the operators.
  • FIG. 5 illustrates the assembly constituted by the tubular pipe 9 and the connection device as shown in FIG. 4c, the valve body 1 supporting a valve 100 which is bent.
  • protective means consist of an insulating sleeve 200 which is fixed to the tightening nut 5 and a tube 300, in particular made of steel, itself fixed to the insulating sleeve 200.
  • the sleeve 200 and the tube 300 make it possible to protect the connection device made of polymer material from physical attacks and from attacks linked to the environment, in particular due to UN radiation.

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

Abstract

The invention concerns a device for connecting a tubular duct on a tap, comprising a base (10) integral with the tap, a clamping nut (5) designed to be screwed on the base and sealing means (3, 4) designed to be housed in an annular space defined between the base and the nut, said sealing means being arranged to be axially compressed when the nut is screwed onto the base. The invention is characterised in that the connecting device further comprises a hollow adapting piece (8) for receiving a tubular metal duct (9) and designed to be arranged in the base and the nut, the latter being mounted rotatably mobile on said adapting piece and integral in translation. The invention is useful for mounting tubular steel ducts on a tap for distributing natural gas.

Description

"Dispositif de raccordement d'une canalisation tubulaire métallique sur un robinet" "Device for connecting a metallic tubular pipe to a tap"
L'invention concerne un dispositif de raccordement d'une canalisation tubulaire sur un robinet, ces éléments étant notamment utilisés dans un réseau de distribution de gaz naturel.The invention relates to a device for connecting a tubular pipe to a tap, these elements being used in particular in a natural gas distribution network.
Ce dispositif de raccordement est plus particulièrement destiné à des canalisations tubulaires métalliques, notamment en acier.This connection device is more particularly intended for metallic tubular conduits, in particular steel.
Il existe aujourd'hui essentiellement deux types de canalisations tubulaires : des canalisations métalliques et notamment en acier et des canalisations en matériau polymère, notamment en polyéthylène . Les canalisations en matériau polymère comportent de nombreux avantages. En effet, elles ne nécessitent pas de soudure, elles sont moins onéreuses à mettre en oeuvre et résistent à la corrosion, sans nécessiter de traitement particulier. A chaque type de canalisation tubulaire sont associés un robinet et un dispositif de raccordement spécifiques. Ceci complique la tâche des opérateurs, la gestion des stocks et accroît donc les coûts.Today there are essentially two types of tubular pipes: metal pipes, in particular steel pipes, and pipes made of polymer material, especially polyethylene. Pipelines made of polymer material have many advantages. Indeed, they do not require welding, they are less expensive to implement and resist corrosion, without requiring any special treatment. Each type of tubular pipe is associated with a specific tap and connection device. This complicates the task of operators, inventory management and therefore increases costs.
L'invention a pour but de pallier ces inconvénients en proposant un dispositif permettant de raccorder une canalisation tubulaire métallique à un robinet conçu pour une canalisation tubulaire en matériau polymère, et ceci en utilisant des pièces couramment utilisées pour raccorder une canalisation tubulaire en matériau polymère au robinet qui lui est spécifique.The invention aims to overcome these drawbacks by proposing a device for connecting a metal tubular pipe to a tap designed for a tubular pipe made of polymer material, and this by using parts commonly used to connect a tubular pipe made of polymer material to specific tap.
Ainsi, le dispositif de raccordement selon l'invention permet d'utiliser le même robinet, à la fois pour des canalisations tubulaires métalliques et pour des canalisations tubulaires en matériau polymère, tout en limitant le nombre de pièces spécifiques aux canalisations tubulaires métalliques.Thus, the connection device according to the invention makes it possible to use the same tap, both for metal tubular pipes and for tubular pipes made of polymer material, while limiting the number of parts specific to metal tubular pipes.
L'invention concerne donc un dispositif de raccordement d'une canalisation tubulaire sur un robinet, comprenant une embase solidaire dudit robinet, un écrou de serrage destiné à être vissé sur 1 ' embase et des moyens d'étanchéité destinés à être logés dans un espace annulaire défini entre l'embase et l'écrou, ces moyens d'étanchéité étant destinés à être comprimés axialement par le vissage de l'écrou sur l'embase pour remplir l'espace annulaire par déformation radiale, caractérisé en ce que le dispositif comprend en outre une pièce d'adaptation creuse destinée à recevoir une canalisation tubulaire métallique et à être disposée dans l'embase et l'écrou pour limiter vers l'intérieur la déformation radiale des moyens d'étanchéité. De préférence, l'écrou est monté mobile en rotation sur ladite pièce et solidaire en translation.The invention therefore relates to a device for connecting a tubular pipe to a tap, comprising a base secured to said tap, a nut tightening intended to be screwed onto the base and sealing means intended to be housed in an annular space defined between the base and the nut, these sealing means being intended to be compressed axially by the screwing of the nut on the base to fill the annular space by radial deformation, characterized in that the device further comprises a hollow adaptation piece intended to receive a metallic tubular pipe and to be disposed in the base and the nut for limit inward the radial deformation of the sealing means. Preferably, the nut is mounted movable in rotation on said part and secured in translation.
C'est pourquoi, la pièce d'adaptation comporte avantageusement une première gorge annulaire débouchant sur sa paroi extérieure, tandis que l'écrou comporte une deuxième gorge annulaire débouchant sur sa paroi intérieure, un jonc élastique étant destiné à être logé dans les première et deuxième gorges, lors du montage de l'écrou sur la pièce d'adaptation. La pièce d'adaptation comporte avantageusement un évidement, notamment conique, avec un filetage intérieur pour le vissage de la canalisation métallique.This is why, the adaptation piece advantageously comprises a first annular groove opening onto its external wall, while the nut comprises a second annular groove opening onto its internal wall, an elastic ring being intended to be housed in the first and second groove, when mounting the nut on the adapter piece. The adapter piece advantageously comprises a recess, in particular conical, with an internal thread for the screwing of the metal pipe.
De préférence, la pièce d'adaptation comporte, sur sa surface extérieure, au moins deux parties sensiblement plates, destinées à faciliter le contact entre ladite pièce et un outil de serrage, tel qu'une pince.Preferably, the adapter piece has, on its outer surface, at least two substantially flat parts, intended to facilitate contact between said piece and a clamping tool, such as pliers.
L'écrou de serrage comporte avantageusement un chanfrein à l'extrémité par laquelle il est destiné à être monté sur ladite pièce d'adaptation. De façon préférée, les moyens d'étanchéité comprennent une bague conique et un joint conique de forme complémentaire destiné à être monté dans ladite bague.The clamping nut advantageously comprises a chamfer at the end by which it is intended to be mounted on said adapter piece. Preferably, the sealing means comprise a conical ring and a conical seal of complementary shape intended to be mounted in said ring.
La bague conique comporte avantageusement un filetage extérieur destiné à coopérer avec un filetage intérieur de l'écrou.The conical ring advantageously comprises an external thread intended to cooperate with an internal thread of the nut.
Enfin, le dispositif de raccordement selon 1 ' invention comprend avantageusement des moyens de protection, notamment constitués par un manchon isolant qui est fixé sur l'écrou de serrage et supporte un tube métallique .Finally, the connection device according to the invention advantageously comprises protection means, in particular constituted by an insulating sleeve which is fixed on the clamping nut and supports a metal tube.
L'invention sera mieux comprise et d'autres buts, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lecture de la description qui suit et qui est faite au regard des dessins annexés représentant des exemples non limitatifs de réalisation de l'invention, et sur lesquels :The invention will be better understood and other objects, advantages and characteristics thereof will appear more clearly on reading the description which follows and which is given with reference to the appended drawings representing nonlimiting examples of embodiment of the invention , and on which:
- la figure 1 est une vue éclatée et en coupe d'un dispositif de raccordement convenant à une canalisation tubulaire en matériau polymère;- Figure 1 is an exploded view in section of a connection device suitable for a tubular pipe made of polymer material;
- les figures 2a, 2b et 2c illustrent trois étapes du montage d'une canalisation tubulaire en matériau polymère et du dispositif de raccordement illustré à la figure 1 ; - la figure 3 est une vue éclatée et en coupe d'un dispositif de raccordement selon 1 ' invention pour une canalisation tubulaire métallique;- Figures 2a, 2b and 2c illustrate three stages of mounting a tubular pipe made of polymer material and the connection device illustrated in Figure 1; - Figure 3 is an exploded view in section of a connection device according to one invention for a metallic tubular pipe;
- les figures 4a, 4b et 4c représentent trois étapes de montage d'une canalisation tubulaire métallique et d'un dispositif de raccordement tel qu'illustré à la figure 3 ; et- Figures 4a, 4b and 4c show three stages of mounting a metal tubular pipe and a connection device as illustrated in Figure 3; and
- la figure 5 est une vue en coupe illustrant des moyens de protection du dispositif de raccordement selon l'invention, tel que représenté aux figures 3 et 4. Les éléments communs aux différentes figures seront désignés par les mêmes références.- Figure 5 is a sectional view illustrating protection means of the connection device according to the invention, as shown in Figures 3 and 4. The elements common to the different figures will be designated by the same references.
La figure 1 illustre partiellement le corps 1 d'un robinet avec une embase 10. Un robinet de ce type est couramment utilisé en association avec une canalisation tubulaire en matériau polymère, en particulier en polyéthylène .Figure 1 partially illustrates the body 1 of a valve with a base 10. A valve of this type is commonly used in association with a tubular pipe made of polymer material, in particular polyethylene.
L'embase 10 présente une forme sensiblement cylindrique avec un filetage 11 sur sa paroi extérieure.The base 10 has a substantially cylindrical shape with a thread 11 on its outer wall.
Le dispositif de raccordement destiné à une canalisation tubulaire en matériau polymère comporte également une virole 2 avec un fût cylindrique 20 dont la surface extérieure est crantée et une collerette qui prolonge le fût 20 à une de ses extrémités. Ce dispositif de raccordement comprend également un joint conique 3 et une bague de serrage 4 également conique. Comme on le verra au regard des figures 2a à 2c, la surface intérieure 40 de la bague 4 présente une forme complémentaire de la surface extérieure 30 du joint conique. Le joint 3 et la bague 4 constituent des moyens d'étanchéité.The connection device intended for a tubular pipe made of polymer material also comprises a ferrule 2 with a cylindrical barrel 20 whose outer surface is notched and a flange which extends the barrel 20 at one of its ends. This connection device also comprises a conical seal 3 and a clamping ring 4 also conical. As will be seen with reference to Figures 2a to 2c, the inner surface 40 of the ring 4 has a shape complementary to the outer surface 30 of the conical seal. The seal 3 and the ring 4 constitute sealing means.
Enfin, le dispositif de raccordement comporte un écrou de serrage 5. Cet écrou 5 comporte un premier évidement 50 fileté intérieurement qui débouche sur une face de l'écrou en se terminant par un chanfrein 54 et un deuxième évidement 51 qui débouche sur la face opposée de l'écrou et comporte un filetage intérieur 52, destiné à coopérer avec le filetage prévu sur la paroi extérieure 41 de la bague 4.Finally, the connection device comprises a tightening nut 5. This nut 5 comprises a first recess 50 internally threaded which opens on one face of the nut ending in a chamfer 54 and a second recess 51 which opens on the opposite face of the nut and has an internal thread 52, intended to cooperate with the thread provided on the outer wall 41 of the ring 4.
L'écrou de serrage 5 comporte également une gorge annulaire 53 qui débouche dans 1 ' évidement fileté 50.The tightening nut 5 also has an annular groove 53 which opens into the threaded recess 50.
Comme on va le voir dans la suite de la description, cette gorge annulaire n'est pas utilisée lors du montage d'une canalisation tubulaire en matériau polymère et pourrait donc ne pas être prévue sur l'écrou 5. Cependant, pour limiter le nombre de pièces constitutives à fabriquer pour les dispositifs de raccordement associés à des canalisations tubulaires métalliques et à des canalisations tubulaires en matériau polymère, on préfère prévoir cette gorge annulaire sur tous les écrous de serrage, ceux-ci étant alors adaptés aux deux types de canalisations tubulaires .As will be seen in the following description, this annular groove is not used when mounting a tubular pipe made of polymer material and could therefore not be provided on the nut 5. However, to limit the number of component parts to be manufactured for the connection devices associated with metal tubular pipes and tubular pipes made of polymer material, it is preferable to provide this annular groove on all the clamping nuts, these then being suitable for the two types of tubular pipes .
A l'exception de cette gorge annulaire prévue dans l'écrou de serrage, le corps de robinet 1, la virole 2, le joint 3, la bague 4 et l'écrou de serrage 5 sont classiquement utilisés dans les dispositifs de raccordement pour des canalisations tubulaires en matériau polymère.With the exception of this annular groove provided in the tightening nut, the valve body 1, the ferrule 2, the seal 3, the ring 4 and the tightening nut 5 are conventionally used in connection devices for tubular pipes made of polymer material.
On se réfère maintenant aux figures 2a à 2c pour décrire le montage d'une canalisation tubulaire 6 en matériau polymère sur le corps 1 du robinet, grâce au dispositif de raccordement décrit en référence à la figureReference is now made to FIGS. 2a to 2c to describe the mounting of a tubular pipe 6 made of polymer material on the body 1 of the valve, using the connection device described with reference to the figure.
1. Comme le montre la figure 2a, le montage consiste tout d'abord à visser l'écrou de serrage 5 sur la canalisation tubulaire 6, le filetage intérieur de1. As shown in FIG. 2a, the assembly consists first of all of screwing the tightening nut 5 onto the tubular pipe 6, the internal thread of
1 ' évidement 50 venant en prise avec la surface extérieure 60 de la canalisation tubulaire 6.1 recess 50 engaging with the outer surface 60 of the tubular pipe 6.
La bague de serrage 4 et le joint conique 3 sont ensuite successivement enfilés sur la canalisation tubulaire 6. La bague de serrage sera vissée dansThe clamping ring 4 and the conical seal 3 are then successively threaded onto the tubular pipe 6. The clamping ring will be screwed into
1 ' évidement 51 de l'écrou par coopération des filetages 41 et 52 et le joint 3 sera enfoncé dans la bague.1 recess 51 of the nut by cooperation of the threads 41 and 52 and the seal 3 will be pressed into the ring.
Comme le montre la figure 2b, la virole 2 est ensuite enfoncée à l'intérieur de la canalisation tubulaire 6, sa collerette 21 venant en appui sur une extrémité de la canalisation tubulaire 6. La surface extérieure crantée 20 de la virole 2 vient en prise avec la surface intérieure 61 de la canalisation tubulaire, ce qui assure la solidarisation des deux pièces. La virole 2 assure la tenue mécanique de la canalisation tubulaire 6 en matériau polymère . Le montage est terminé en plaçant la canalisation tubulaire 6 avec la virole 2 à l'intérieur de l'embase cylindrique 10, puis en vissant l'écrou de serrage sur l'embase 10, grâce à la coopération du filetage intérieur 52 de 1 ' évidement 51 et du filetage 11 prévu sur la paroi extérieure de l'embase 10.As shown in FIG. 2b, the ferrule 2 is then pressed inside the tubular duct 6, its flange 21 coming to bear on one end of the tubular duct 6. The notched outer surface 20 of the ferrule 2 engages with the inner surface 61 of the tubular pipe, which ensures the joining of the two parts. The ferrule 2 provides the mechanical strength of the tubular pipe 6 made of polymer material. The assembly is finished by placing the tubular pipe 6 with the ferrule 2 inside the cylindrical base 10, then by screwing the tightening nut on the base 10, thanks to the cooperation of the internal thread 52 of 1 ' recess 51 and the thread 11 provided on the outer wall of the base 10.
Ainsi, grâce à la forme complémentaire de la surface extérieure 30 du joint 3 et de la surface intérieure 40 de la bague 4, le joint 3 peut pénétrer dans la bague 4. Le joint 3 et la bague 4 sont logés dans un espace annulaire défini entre l'embase 10 et l'écrou 5, cet espace annulaire étant également délimité par la canalisation tubulaire 6.Thus, thanks to the complementary shape of the outer surface 30 of the seal 3 and of the inner surface 40 of the ring 4, the seal 3 can penetrate into the ring 4. The seal 3 and the ring 4 are housed in a defined annular space between the base 10 and the nut 5, this annular space also being delimited by the tubular pipe 6.
Lors du serrage de l'écrou sur l'embase 10, le jointWhen tightening the nut on the base 10, the seal
3 et la bague 4 sont comprimés axialement pour remplir l'espace annulaire par déformation radiale, de façon à assurer l'étanchéité du raccordement entre la canalisation tubulaire 6 et le corps 1 de robinet .3 and the ring 4 are compressed axially to fill the annular space by radial deformation, so as to seal the connection between the tubular pipe 6 and the valve body 1.
La présence de la virole 2 permet de limiter la déformation radiale des moyens d'étanchéité 3 et 4 vers l'intérieur de la canalisation tubulaire 6. On se réfère maintenant à la figure 3 qui illustre un dispositif de raccordement selon 1 ' invention destiné à une canalisation tubulaire métallique, notamment en acier.The presence of the ferrule 2 makes it possible to limit the radial deformation of the sealing means 3 and 4 towards the inside of the tubular pipe 6. Reference is now made to FIG. 3 which illustrates a connection device according to the invention intended for a metallic tubular pipe, in particular made of steel.
Ce dispositif de raccordement utilise quatre éléments qui ont déjà été décrits en référence à la figure 1 et qui ne seront pas de nouveau décrits en détail.This connection device uses four elements which have already been described with reference to Figure 1 and which will not be described again in detail.
Il s'agit du corps de robinet 1 avec son embase 10 et son filetage extérieur 11, du joint conique d'étanchéité 3 avec sa surface extérieure conique 30, de la bague de serrage 4 avec sa surface intérieure conique 40 et de l'écrou de serrage 5 avec son évidement 50 fileté intérieurement et comportant une gorge annulaire 53 et un autre évidement 51 avec un filetage intérieur 52.These are the valve body 1 with its base 10 and its external thread 11, the conical seal 3 with its conical external surface 30, the clamping ring 4 with its conical internal surface 40 and the nut clamp 5 with its recess 50 internally threaded and comprising an annular groove 53 and another recess 51 with an internal thread 52.
Comme on le verra dans la suite de la description, la présence de la gorge annulaire 53 dans 1 ' évidement 50 est nécessaire au montage du dispositif de raccordement. Par contre, 1 ' évidement 50 n'est pas nécessairement fileté. Comme expliqué précédemment, on choisit un écrou 5 avec un évidement 50 fileté pour que cet écrou 5 soit également utilisable pour le montage d'une canalisation tubulaire en matériau polymère.As will be seen in the following description, the presence of the annular groove 53 in one recess 50 is necessary for mounting the connection device. On the other hand, the recess 50 is not necessarily threaded. As explained above, a nut 5 is chosen with a threaded recess 50 so that this nut 5 can also be used for mounting a tubular pipe made of polymer material.
Ce dispositif de raccordement comporte également un jonc 7 élastique, ainsi qu'une pièce d'adaptation 8, destinée à recevoir une canalisation tubulaire métallique 9, notamment en acier.This connection device also includes an elastic ring 7, as well as an adapter part 8, intended to receive a metallic tubular pipe 9, in particular made of steel.
Cette pièce d'adaptation 8 est creuse. Elle comporte un évidement 80 avec un filetage intérieur 81 dans lequel peut être vissée l'extrémité de la canalisation tubulaire métallique 9, comme le montre la figure 4a. Dans l'exemple de dispositif de raccordement illustré aux figures 3, 4a à 4c, la pièce d'adaptation 8 est constituée de deux portions sensiblement cylindriques et de diamètres différents. La première portion 82 comporte l' évidement 80 pour le tube 9, tandis que la deuxième portion 83 présente un diamètre inférieur à celui de la portion 82. Ainsi, le diamètre de la portion 83 peut être choisi sensiblement égal à celui de la canalisation tubulaire en matériau polymère utilisée avec l'écrou 5. Grâce à cette réduction de diamètre, le dispositif de raccordement selon l'invention peut utiliser le même écrou de serrage que celui qui convient à une canalisation tubulaire en matériau polymère. Cependant, cette caractéristique n'est pas indispensable et la pièce d'adaptation 8 pourrait comporter un diamètre extérieur constant .This adaptation piece 8 is hollow. It comprises a recess 80 with an internal thread 81 into which the end of the metallic tubular pipe 9 can be screwed, as shown in FIG. 4a. In the example of a connection device illustrated in FIGS. 3, 4a to 4c, the adaptation piece 8 consists of two substantially cylindrical portions and of different diameters. The first portion 82 includes the recess 80 for the tube 9, while the second portion 83 has a diameter less than that of the portion 82. Thus, the diameter of the portion 83 can be chosen to be substantially equal to that of the tubular pipe. made of polymer material used with nut 5. Thanks to this reduction in diameter, the connection according to the invention can use the same clamping nut as that which is suitable for a tubular pipe made of polymer material. However, this characteristic is not essential and the adapter piece 8 could have a constant outside diameter.
Sur la surface extérieure de la portion cylindrique 83 est prévue une gorge annulaire 84.On the outer surface of the cylindrical portion 83 is provided an annular groove 84.
Comme l'illustre la figure 4a, cette gorge annulaire 84 est destinée à recevoir le jonc 7. Ce jonc permet 1 ' encliquetage de l'écrou 5 sur la pièce d'adaptation 8. Pour cela, l'écrou 5 est enfilé sur la portion cylindrique 83. Lors de sa mise en place, il force le jonc élastique 7 à pénétrer dans la gorge annulaire 84 prévue sur la pièce d'adaptation, ce jonc 7 s ' expansant ensuite dans la gorge annulaire 53 prévue dans l'écrou pour assurer une coopération indémontable entre la pièce d'adaptation 8 et 1 ' écrou 5.As illustrated in FIG. 4a, this annular groove 84 is intended to receive the rod 7. This rod allows the latching of the nut 5 on the adaptation piece 8. For this, the nut 5 is threaded on the cylindrical portion 83. When it is put in place, it forces the elastic ring 7 to penetrate into the annular groove 84 provided on the adapter piece, this ring 7 then expanding in the annular groove 53 provided in the nut for ensure a non-removable cooperation between the adaptation piece 8 and the nut 5.
Grâce au jonc 7, aucun déplacement relatif transversal n'est possible entre l'écrou 5 et la pièce d'adaptation 8. Par contre, l'écrou et la pièce d'adaptation sont mobiles en rotation l'un par rapport à 1 ' autre .Thanks to the ring 7, no relative transverse movement is possible between the nut 5 and the adapter piece 8. On the other hand, the nut and the adapter piece are movable in rotation relative to one ' other.
Le montage du dispositif de raccordement est poursuivi en vissant la bague de serrage 4 dans l'écrou 5 puis en enfilant le joint 3 sur la pièce d'adaptation 8.The mounting of the connection device is continued by screwing the clamping ring 4 into the nut 5 and then threading the seal 3 onto the adapter piece 8.
Il suffit alors de placer l'ensemble sur le corps de robinet 1 puis de visser l'écrou 5 sur l'embase 10, grâce à la coopération des filetages 52 et 11. Comme expliqué précédemment en référence à la figureIt then suffices to place the assembly on the valve body 1 and then to screw the nut 5 onto the base 10, thanks to the cooperation of the threads 52 and 11. As previously explained with reference to the figure
2c, la figure 4a montre que le vissage de l'écrou 5 sur l'embase 10 permet de comprimer axialement le joint 3 et la bague 4 qui assurent ainsi l'étanchéité du dispositif de raccordement . Lors du serrage de l'écrou 5 sur l'embase 10, la pièce d'adaptation 8 n'est pas entraînée en rotation, ce qui évite d'imprimer un mouvement à la canalisation tubulaire 9 vissée dans cette pièce 8. Par ailleurs, la pièce d'adaptation comporte de préférence au moins deux zones plates (non représentées) , par exemple sur la portion 82. Ces parties plates sont prévues pour qu'un outil de serrage tel qu'une pince puisse facilement maintenir fixe la pièce d'adaptation, lors du vissage d'une canalisation tubulaire métallique 9 dans 1 ' évidement 80.2c, FIG. 4a shows that the screwing of the nut 5 on the base 10 makes it possible to compress the gasket 3 and the ring 4 axially which thus seal the connection device. When the nut 5 is tightened on the base 10, the adaptation piece 8 is not rotated, which avoids imposing a movement on the tubular pipe 9 screwed into this piece 8. Furthermore, the adapter piece preferably comprises at least two flat areas (not shown), for example on the portion 82. These flat parts are provided so that a clamping tool such as a clamp can easily keep the adapter, when screwing a metallic tubular pipe 9 into the recess 80.
Les explications qui précèdent montrent que le dispositif de raccordement selon l'invention, destiné à une canalisation tubulaire métallique, présente effectivement 1 ' avantage de permettre le raccordement entre une canalisation tubulaire métallique et un corps de robinet prévu pour une canalisation tubulaire en matériau polymère, des éléments constitutifs de ce dispositif de raccordement pouvant également être utilisés pour une canalisation tubulaire en un matériau polymère.The foregoing explanations show that the connection device according to the invention, intended for a metal tubular pipe, actually has the advantage of allowing connection between a metal tubular pipe and a tap body provided for a tubular pipe made of polymer material, constituent elements of this connection device which can also be used for a tubular pipe made of a polymer material.
Par ailleurs, le dispositif de raccordement selon l'invention évite toute opération de soudure de la canalisation tubulaire métallique. Enfin, le montage de la canalisation tubulaire, de la pièce d'adaptation et de l'écrou peut être réalisé au préalable, ce qui facilite le travail des opérateurs.Furthermore, the connection device according to the invention avoids any welding operation of the metal tubular pipe. Finally, the assembly of the tubular pipe, the adapter part and the nut can be carried out beforehand, which facilitates the work of the operators.
On se réfère maintenant à la figure 5 qui illustre l'ensemble constitué par la canalisation tubulaire 9 et le dispositif de raccordement tel que montré à la figure 4c, le corps de robinet 1 supportant un robinet 100 qui est coudé .Reference is now made to FIG. 5 which illustrates the assembly constituted by the tubular pipe 9 and the connection device as shown in FIG. 4c, the valve body 1 supporting a valve 100 which is bent.
Par ailleurs, des moyens de protection sont prévus, lesquels consistent en un manchon isolant 200 qui est fixé sur l'écrou de serrage 5 et un tube 300, notamment en acier, lui-même fixé sur le manchon isolant 200.Furthermore, protective means are provided, which consist of an insulating sleeve 200 which is fixed to the tightening nut 5 and a tube 300, in particular made of steel, itself fixed to the insulating sleeve 200.
Le manchon 200 et le tube 300 permettent de protéger le dispositif de raccordement en matériau polymère des agressions physiques et des agressions liées à l'environnement, notamment dues aux rayonnements UN.The sleeve 200 and the tube 300 make it possible to protect the connection device made of polymer material from physical attacks and from attacks linked to the environment, in particular due to UN radiation.
Les signes de référence insérés après les caractéristiques techniques figurant dans les revendications ont pour seul but de faciliter la compréhension de ces dernières et ne sauraient en limiter la portée. The sole purpose of the reference signs inserted after the technical characteristics appearing in the claims is to facilitate the understanding of these and cannot limit their scope.

Claims

Revendications claims
1. Dispositif de raccordement d'une canalisation tubulaire sur un robinet, comprenant une embase (10) solidaire du robinet, un écrou de serrage (5) destiné à être vissé sur ladite embase et des moyens d'étanchéité (3, 4) destinés à être logés dans un espace annulaire défini entre l'embase et l'écrou, ces moyens d'étanchéité étant destinés à être comprimés axialement par le vissage de l'écrou sur l'embase pour remplir l'espace annulaire par déformation radiale, caractérisé en ce que le dispositif comprend en outre une pièce d'adaptation (8) creuse destinée à recevoir une canalisation tubulaire métallique (9) et à être disposée dans l'embase (10) et l'écrou (5) pour limiter vers l'intérieur la déformation radiale des moyens d'étanchéité.1. Device for connecting a tubular pipe to a valve, comprising a base (10) integral with the valve, a clamping nut (5) intended to be screwed onto said base and sealing means (3, 4) intended to be housed in an annular space defined between the base and the nut, these sealing means being intended to be compressed axially by the screwing of the nut on the base to fill the annular space by radial deformation, characterized in that the device further comprises a hollow adapter piece (8) intended to receive a metallic tubular pipe (9) and to be disposed in the base (10) and the nut (5) to limit towards the inside the radial deformation of the sealing means.
2. Dispositif selon la revendication 1, caractérisé en ce que l'écrou (5) est monté mobile en rotation sur ladite pièce d'adaptation (8) et solidaire en translation.2. Device according to claim 1, characterized in that the nut (5) is mounted movable in rotation on said adapter piece (8) and secured in translation.
3. Dispositif selon la revendication 2, caractérisé en ce que la pièce d'adaptation (8) comporte une première gorge annulaire (84) débouchant sur sa paroi extérieure tandis que l'écrou (5) comporte une deuxième gorge annulaire (53) débouchant sur sa paroi intérieure, un jonc élastique (7) étant destiné à être logé dans les première et deuxième gorges lors du montage de l'écrou sur la pièce d' adaptation.3. Device according to claim 2, characterized in that the adaptation piece (8) has a first annular groove (84) opening on its outer wall while the nut (5) has a second annular groove (53) opening on its inner wall, an elastic ring (7) being intended to be housed in the first and second grooves during mounting of the nut on the adapter piece.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la pièce d'adaptation (8) comporte un évidement (80) , notamment conique, avec un filetage intérieur (81) pour le vissage de la canalisation métallique (9) .4. Device according to one of claims 1 to 3, characterized in that the adaptation piece (8) comprises a recess (80), in particular conical, with an internal thread (81) for the screwing of the metal pipe ( 9).
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la pièce d'adaptation (8) comporte, sur sa surface extérieure, au moins deux parties sensiblement plates destinées à faciliter le contact entre ladite pièce et un outil de serrage, tel qu'une pince. 5. Device according to one of claims 1 to 4, characterized in that the adapter part (8) comprises, on its outer surface, at least two substantially flat parts intended to facilitate contact between said part and a tool clamping, such as pliers.
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que l'écrou de serrage (5) comporte un chanfrein (54) à l'extrémité par laquelle il est destiné à être monté sur la pièce d'adaptation (8) . 6. Device according to one of claims 1 to 5, characterized in that the clamping nut (5) comprises a chamfer (54) at the end by which it is intended to be mounted on the adapter piece ( 8).
7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que les moyens d'étanchéité comprennent une bague conique (4) et un joint conique (3) de forme complémentaire destiné à être monté dans ladite bague.7. Device according to one of claims 1 to 6, characterized in that the sealing means comprise a conical ring (4) and a conical seal (3) of complementary shape intended to be mounted in said ring.
8. Dispositif selon la revendication 7, caractérisé en ce que la bague (4) comporte un filetage extérieur (41) destiné à coopérer avec un filetage intérieur (52) de 1 ' écrou (5) .8. Device according to claim 7, characterized in that the ring (4) has an external thread (41) intended to cooperate with an internal thread (52) of the nut (5).
9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce qu'il comprend des moyens de protection, constitués par un manchon isolant (200) fixé sur l'écrou de serrage et supportant un tube métallique (300) . 9. Device according to one of claims 1 to 8, characterized in that it comprises protection means, constituted by an insulating sleeve (200) fixed on the clamping nut and supporting a metal tube (300).
EP00936945A 1999-05-28 2000-05-26 Device for connecting a tubular metal duct on a tap Withdrawn EP1099074A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9906800 1999-05-28
FR9906800A FR2794213B1 (en) 1999-05-28 1999-05-28 DEVICE FOR CONNECTING A METAL TUBULAR PIPING TO A TAP
PCT/FR2000/001441 WO2000073689A1 (en) 1999-05-28 2000-05-26 Device for connecting a tubular metal duct on a tap

Publications (1)

Publication Number Publication Date
EP1099074A1 true EP1099074A1 (en) 2001-05-16

Family

ID=9546147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00936945A Withdrawn EP1099074A1 (en) 1999-05-28 2000-05-26 Device for connecting a tubular metal duct on a tap

Country Status (4)

Country Link
EP (1) EP1099074A1 (en)
AU (1) AU5226200A (en)
FR (1) FR2794213B1 (en)
WO (1) WO2000073689A1 (en)

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Publication number Priority date Publication date Assignee Title
KR102005741B1 (en) * 2018-12-27 2019-07-31 (주)준성이엔씨 Pipe joint for connecting piping

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915045C (en) * 1952-12-19 1954-07-15 Hans Kreidel Jun Pipe connection
DE2842206A1 (en) * 1978-09-28 1980-04-03 Franz Ing Grad Brettschneider Screw-type union for plastics or metal pipes - has nipple and nut with cone faces distorting inserts to grip and seal pipe
AUPO562797A0 (en) * 1997-03-14 1997-04-10 Hoselink Pty. Limited Improved hose fitting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0073689A1 *

Also Published As

Publication number Publication date
WO2000073689A1 (en) 2000-12-07
FR2794213B1 (en) 2001-09-07
FR2794213A1 (en) 2000-12-01
AU5226200A (en) 2000-12-18

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