BE516997A - - Google Patents

Info

Publication number
BE516997A
BE516997A BE516997DA BE516997A BE 516997 A BE516997 A BE 516997A BE 516997D A BE516997D A BE 516997DA BE 516997 A BE516997 A BE 516997A
Authority
BE
Belgium
Prior art keywords
pipe
sleeve
seal
pipes
coupling
Prior art date
Application number
Other languages
French (fr)
Publication of BE516997A publication Critical patent/BE516997A/fr

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
    • F16L17/00Joints with packing adapted to sealing by fluid pressure
    • F16L17/02Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F16L17/025Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket the sealing rings having radially directed ribs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Sleeves (AREA)

Description

       

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  ACCOUPLEMENT AUTO-ETANCHE POUR TUYAUX. 



   La présente invention concerne un accouplement   auto-étanche   pour tuyaux, comportant au moins un anneau de joint élastique monté entre le tuyau et un manchon. En pratique et particulièrement dans la construction des conduites d'eau, l'utilisation des accouplements de tuyaux de ce type n'a pas su s'imposer à cause des inconvénients qu'ils présentent. Le joint ne commence généralement à être efficace que lorsque la pression intérieure est assez forte, de sorte que l'étanchéité est très incomplète pendant le remplissage d'une conduite et lorsque la pression est faible.

   Même sous de plus fortes pressions les résultants ne sont pas satisfaisants étant donné que très souvent des corps étrangers coincés entre le tuyau et le joint, ou des inégalités des surfaces du tuyau ou du manchon ou l'équivalent, rendent des petites fuites d'eau possibles. 



   Suivant la présente invention, on supprime ces inconvénients en profilant l'anneau de joint intérieurement et/ou extérieurement en dents de scie, dents de peigne, ondulations ou l'équivalent. L'anneau de joint porte avantageusement à l'extérieur contre une surface du manchon s'évasant depuis l'extrémité de ce dernier, par exemple conique, de sorte que lorsque la pression dans la conduite augmente, le joint se comprime de plus en plus et par conséquent son étanchéité   en':est   accrue. 



   Le dessin annexé montre à titre d'exemple une forme de réalisation de l'accouplement suivant l'invention, en coupe longitudinale: 
L'accouplement est constitué par un manchon 1 et deux anneau de joint 2 en caoutchouc ou 1-'équivalent, montés chacun dans un évidement conique 3. Chaque anneau dejoint 2 a une, section transversale conique correspondante et est pourvu du coté intérieur, de nervures circulaires   4,   dont le profil est sensiblement en dents de scie, et du côté extérieur,d'ondulations circulaires peu accentuées 5. Le diamètre intérieur des nervures 4 est légèrement inférieur au diamètre extérieur du tuyau 6, indiqué en traits inter-   rompus.   

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   Lorsqu'on introduit le tuyau 6 dans le manchon   1,   les nervures   4   quittent la position indiquée sur le dessin et se couchent vers le milieu du manchon, portant ainsi d'une façon bien étanche contre le tuyau. En   morne   temps l'anneau de joint 2 s'élargit, de sorte   qu'il   est comprimé contre la surface conique 3.

   Il est clair qu'au moins en cas de pression faible, l'anneau ne porte pas sur la surface 3 par toute la longueur de sa surface extérieure, mais uniquement par les crêtes des ondulations 5, Ces crêtes d'ondulations saillantes se déforment aisément et de ce fait s'adaptent mieux à d'éventuelles inégalités de la surface 3, de sorte qu'on obtient une meilleure étanchéité qu'avec une surface conique lisse. ll en est de même en ce qui concerne   Inefficacité   des nervures intérieures   4   comparativement à une surface   cylindri-   que lisse. Comme plusieurs nervures, bourrelets d'étanchéité ou l'équivalent sont disposés en série, des corps étrangers éventuellement coincés entre les anneaux 2 d'une part et les tuyaux 6 ou le manchon 1 d'autre part, ne nuiraient aucunement à l'étanchéité. 



   On peut constater que l'accouplement suivant la présente invention ainsi que son montage se distinguent par une grande simplicité, le montage se limitant à introduire le tuyau dans le manchon et ne nécessitant aucun dispositif auxiliaire ou outil particulier. Si la partie médiane du manchon 1 est suffisamment longue, on peut évidemment utiliser l'accouplement comme accouplement dit de prise, L'invention peut également être appliquée au raccordement de tuyaux à   emboîtement.   Le profil du ou des anneaux de joint peut varier,l'essentiel étant que, vus en coupe transversale, les anneaux ne portent pas de façon continue, mais de place en place contre les tuyaux ou le manchon, Dans certains cas particuliers, il peut suffire que soit l'intérieur, soit l'extérieur des anneaux de joint soit profilé. 



   REVENDICATIONS. l.- Accouplement auto-étanche pour tuyaux, comportant au moins un anneau de joint qui entoure le tuyau et porte   extériéurément   contre une surface du manchon évasée depuis l'extrémité de ce dernier, caractérisé en ce que l'anneau de joint est pourvu intérieurement de-nervures circulaires dont la section transversale est avantageusement sensiblement en dents de scie, le diamètre intérieur de cet anneau de joint étant plus petit que le diamètre extérieur du tuyau.



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  SELF-SEALED COUPLING FOR PIPES.



   The present invention relates to a self-sealing coupling for pipes, comprising at least one resilient seal ring mounted between the pipe and a sleeve. In practice and particularly in the construction of water pipes, the use of pipe couplings of this type has not been able to impose itself because of the drawbacks they present. The seal usually only begins to be effective when the internal pressure is strong enough, so that the seal is very incomplete during the filling of a pipe and when the pressure is low.

   Even under higher pressures the results are not satisfactory since very often foreign bodies stuck between the pipe and the joint, or unevenness of the surfaces of the pipe or the sleeve or the equivalent, cause small water leaks. possible.



   According to the present invention, these drawbacks are eliminated by profiling the seal ring internally and / or externally as sawtooth, comb teeth, corrugations or the like. The seal ring advantageously bears on the outside against a surface of the sleeve flaring from the end of the latter, for example conical, so that when the pressure in the pipe increases, the seal compresses more and more and consequently its tightness in ': is increased.



   The appended drawing shows by way of example an embodiment of the coupling according to the invention, in longitudinal section:
The coupling consists of a sleeve 1 and two rubber seal rings 2 or 1 -equivalent, each mounted in a conical recess 3. Each seal ring 2 has a corresponding conical cross section and is provided on the inner side with circular ribs 4, the profile of which is substantially sawtooth, and on the outside, slightly accentuated circular undulations 5. The inside diameter of the ribs 4 is slightly less than the outside diameter of the pipe 6, indicated in broken lines.

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   When the pipe 6 is introduced into the sleeve 1, the ribs 4 leave the position shown in the drawing and lie down towards the middle of the sleeve, thus bearing tightly against the pipe. Eventually the seal ring 2 widens so that it is compressed against the conical surface 3.

   It is clear that at least in the event of low pressure, the ring does not bear on the surface 3 by the entire length of its outer surface, but only by the ridges of the corrugations 5, These protruding ridges of corrugations are easily deformed and therefore adapt better to any unevenness of the surface 3, so that a better seal is obtained than with a smooth conical surface. The same is true of the inefficiency of the inner ribs 4 compared to a smooth cylindrical surface. As several ribs, sealing beads or the equivalent are arranged in series, any foreign bodies possibly trapped between the rings 2 on the one hand and the pipes 6 or the sleeve 1 on the other hand, would in no way affect the seal. .



   It can be seen that the coupling according to the present invention as well as its assembly are distinguished by great simplicity, the assembly being limited to inserting the pipe into the sleeve and not requiring any auxiliary device or particular tool. If the middle part of the sleeve 1 is long enough, the coupling can obviously be used as a so-called socket coupling. The invention can also be applied to the connection of socket pipes. The profile of the seal ring (s) may vary, the main thing being that, seen in cross section, the rings do not bear continuously, but from place to place against the pipes or the sleeve. In certain special cases, it may it suffices that either the inside or the outside of the seal rings is profiled.



   CLAIMS. l.- Self-sealing coupling for pipes, comprising at least one joint ring which surrounds the pipe and bears externally against a surface of the sleeve flared from the end of the latter, characterized in that the joint ring is provided internally circular ribs, the cross section of which is advantageously substantially sawtooth, the internal diameter of this seal ring being smaller than the external diameter of the pipe.


    

Claims (1)

2. - Accouplement de tuyaux suivant la revendication 1, caractérisé en ce que la surface extérieure conique de l'anneau de joint, vue en coupe longitudinale, est ondulée, 2. - Pipe coupling according to claim 1, characterized in that the conical outer surface of the seal ring, seen in longitudinal section, is corrugated,
BE516997D BE516997A (en)

Publications (1)

Publication Number Publication Date
BE516997A true BE516997A (en)

Family

ID=154019

Family Applications (1)

Application Number Title Priority Date Filing Date
BE516997D BE516997A (en)

Country Status (1)

Country Link
BE (1) BE516997A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1182913B (en) * 1955-07-25 1964-12-03 Cie De Pont A Mousson S A Seal for socket-pipe connection
US5129685A (en) * 1988-04-27 1992-07-14 Donaldson Company, Inc. Connector system for air transfer ducts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1182913B (en) * 1955-07-25 1964-12-03 Cie De Pont A Mousson S A Seal for socket-pipe connection
US5129685A (en) * 1988-04-27 1992-07-14 Donaldson Company, Inc. Connector system for air transfer ducts

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