WO1998013641A1 - Systeme de raccord de tuyaux et procede destine a executer un raccord de tuyaux formant un angle avec la paroi d'un tuyau - Google Patents

Systeme de raccord de tuyaux et procede destine a executer un raccord de tuyaux formant un angle avec la paroi d'un tuyau Download PDF

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Publication number
WO1998013641A1
WO1998013641A1 PCT/NL1997/000533 NL9700533W WO9813641A1 WO 1998013641 A1 WO1998013641 A1 WO 1998013641A1 NL 9700533 W NL9700533 W NL 9700533W WO 9813641 A1 WO9813641 A1 WO 9813641A1
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WO
WIPO (PCT)
Prior art keywords
pipe
opening
wall
connection system
formed end
Prior art date
Application number
PCT/NL1997/000533
Other languages
English (en)
Inventor
Michel Van Den Molengraft
Original Assignee
Nyloplast Europe B.V.
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 Nyloplast Europe B.V. filed Critical Nyloplast Europe B.V.
Publication of WO1998013641A1 publication Critical patent/WO1998013641A1/fr

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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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/004—Joining to walls at other than 90 degrees

Definitions

  • the present invention relates to a connection system comprising a first pipe, which is provided with an opening in its wall, and a second pipe, which is provided with a pre-formed end comprising sealing means, whose diameter is smaller than that of the first pipe.
  • the present invention furthermore relates to a method for effecting a connection between an opening in a first pipe and a correspondingly pre-formed end of a second pipe.
  • connection system and a method of this kind which are for example used in extending a pipe system, such as a (usually underground) sewage system, are generally known.
  • a pipe system such as a (usually underground) sewage system
  • the first pipe is in practice sawn through in two places after being excavated, after which a T-piece or another connecting piece extending at a selected angle is inserted.
  • the connecting piece is provided with double socket tees at both ends of its straight portion, which are slid over the two sawn- hrough ends, thus effecting a connection and a seal .
  • the end of the second pipe is slid over the remaining end of the connecting piece, and connected thereto to form a watertight seal. Then the excavated hole is filled up again.
  • connection system One drawback of the known connection system is the fact that it is necessary to excavate the underground first pipe all round along a considerable part thereof, which requires a substantial amount of time and manpower and/or the use of relatively costly excavation machines. This is all the more true when the pipes to be exposed lie deep in the ground. Furthermore the use of the known connection system leads to a relatively large amount of waste material in the form of sawn-off, wasted parts of the first pipe, which are replaced by at least part of the connecting piece.
  • the object of the present invention is to provide a connection system and a method for effecting a high- quality pipe connection of sufficient mechanical strength which is less labourious and time-consuming.
  • connection system is characterized in that the shape of the opening in the first pipe is substantially elongated, in particular ovoid (egg- formed) or elliptical, and that the opening of the first pipe and the end of the second pipe are shaped in conformity to each other, such that the end of the second pipe can be manoeuvred through the opening in the first pipe from outside, after which the pre-formed end comprising the sealing means butts against the inner wall of the first pipe.
  • the method for effecting the connection is according to the invention characterized in that said end is inserted into said opening up to a position near the inner wall of the first pipe opposite the opening, after which the second pipe is tilted and rotated until the desired angular position is obtained, and that said second pipe is subsequently pulled out of the opening so far that sealing means present on the pre-formed end of the second pipe bear against the portion of the inner wall of said first pipe that surrounds said opening.
  • the lateral connection can be positioned at any desired angle in order to optimize the inflow and through-flow through the pipe connection;
  • the only waste material is the material sawn out of the first pipe to form the opening, whilst according to prior art even a complete pipe portion was sawn out, which had to be replaced by the respective pipe portion of the connecting piece;
  • connection that is formed provides a high- quality and mechanically strong and stable airtight and watertight seal against the inner side of the first pipe;
  • connection system according to the invention comprises few parts
  • the opening weakens the pipe only minimally, and only in so far as this is necessary.
  • Figure 1 shows an embodiment of a connection system according to the invention, which can be fitted at an angle into an existing main pipe;
  • Figures 2 and 3 respectively show a threaded inlet and a pipe sleeve to be fitted round said threaded inlet and a nut to be used in the connection system of Figure 1 ;
  • Figure 4 is a view of the elongated opening in the already existing pipe of Figure 1 ;
  • Figures 5 - 9 show the successive positions which the threaded inlet and the pipe of Figure 1 occupy when a connection is being effected between the opening in the pipe and a correspondingly pre-formed end of the threaded inlet;
  • Figure 10 shows the embodiment of Figure 1 provided with a mounting notch.
  • FIG 1 shows a. connection system 1 comprising a first pipe 2 and a second pipe or threaded inlet 3.
  • Pipe 2 is provided with an elongated, usually ovoid or elliptical opening , which is shown in more detail in Figure 4. The opening is formed in pipe 2 by sawing, possibly with a hand-held saw.
  • Pipe 3 is shown in Figure 2.
  • This pipe or threaded inlet 3 comprises a pre-formed end 5 in the shape of an upright circumferential edge.
  • Circumferential edge 5 is shaped in such a manner that when threaded inlet 3 is inserted in opening 4 of pipe 2, said circumferential edge 5 will just bear against the inner side 6 of pipe 2 near opening 4.
  • Sealing means in the shape of a sealing ring shown in Figure 1 are provided on circumferential edge 5.
  • the pre-formed end 5 of threaded inlet 3 is inserted into opening 4 in a manner yet to be explained.
  • a pipe sleeve 8 which is shown in more detail in Figure 3, is slid over threaded inlet 3. This leads to the situation shown in Figure 1.
  • Pipe sleeve 8 is provided with a pre-formed end 9, which, as is shown in Figure 1, has been brought in mechanical contact with the outside 10 of pipe 2 surrounding opening 4.
  • the other end 11 of threaded inlet 3 is provided with for example "blown" screw thread 12, onto which a nut 13 can be screwed.
  • FIG. 5 diagrammatically show the manner in which second pipe or threaded inlet 3 is inserted into opening 4 of first pipe 2.
  • the pre-formed end 5 will move towards opening 4 until the situation shown in Figure 6 is reached, wherein said end 5 is practically in contact with the inner side 6 opposite the opening 4 in pipe 2.
  • pipe 3 is tilted and simultaneously rotated in the manner shown in Figure 7, until the situation shown in Figure 8 is reached, wherein further tilting of pipe 3 becomes possible and the situation shown in Figure 9 is reached after pipe 3 has been pulled out of opening 4 as far as possible.
  • the various movements and rotations are indicated by means of arrows.
  • threaded inlet 3 with a local, usually annular or wedge-shaped protrusion 16 near end 5, which protrusion ensures that threaded inlet 3 is more or less locked in position in opening 4 when pipe sleeve 8 is slid over said threaded inlet, and will not move out of said opening. Said protrusion also prevents threaded inlet 3 from rotating as well. Threaded inlet 3 is furthermore provided with a stop shoulder 17.
  • first pipe 2 is provided with an ovoid (seen in perpendicular projection) opening 4, as is to be preferred, and threaded inlet 3 is provided with a correspondingly shaped end having an upright edge or flange 5, the following advantage is obtained.
  • the widest portion B of the threaded inlet is also positioned closer to the side wall of threaded inlet 3 by a distance R, seen in radial direction, than in the situation in which the widest portion B is located in the centre P of the opening ( Figure 10) .
  • This makes it possible to insert a flange 5 having a larger dimension through opening 4 than in the situation wherein use is made of for example an elliptical (seen in perpendicular projection) opening 4 and a correspondingly shaped end comprising a flange 5.
  • Figure 10 also shows a mounting notch M. The presence of said mounting notch M makes it easier to make the movements required for forming the connection ( Figure 7) . This is important in particular for the unskilled user.
  • connection with the ovoid provides a better seal.
  • a threaded inlet 3 to a pipe 2 whose diameter is practically the same as that of threaded inlet 3. This will be explained by means of the example below.
  • Pipes are manufactured in a number of preferred diameters, which increase in steps, for example 160 mm, 200 mm and 250 mm. Furthermore pipes are manufactured whose diameter increases in half steps, 180 mm and 225 mm.
  • a threaded inlet 3 having a diameter of 200 mm may for example be connected to a pipe 2 whose diameter is only a full step larger, that is, 250 mm.
  • the diameter of threaded inlet 3 is maximally 80% of the diameter of pipe 2.
  • this ratio is maximally 72%, that is, a difference of one step and a half (for example a pipe diameter of 250 mm and a threaded inlet diameter of 180 mm) . More preferably the ratio is maximally 64%, that is, a difference of two steps (for example a pipe diameter of 250 mm and a threaded inlet diameter of 160 mm) .
  • threaded inlet 3 need not be inserted through opening 4 in pipe 2 in a direction perpendicularly to the central axis of pipe 2, as is the case when a connection with an elliptical opening 4 is made, but it may for example be inserted through opening 4 at an acute angle. This has appeared to be important, in particular because it has become apparent in practice that it is not always possible to have said insertion through the opening take place substantially perpendicularly, this in connection with the available manoeuvring space .
  • ovoid is understood to mean a two-dimensional projection of an egg, that is, a shape which is substantially symmetrical with respect to its longitudinal axis, and whose maximum transverse dimension is located at a place which is in particular shifted more than 15% of the length of the longitudinal axis with respect to the centre of said longitudinal axis .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

Dans ce système de raccord (1), on fixe de manière étanche un second tuyau (3) présentant un bord périphérique préformé et pourvu de moyens d'étanchéité (7), dans une ouverture ménagée dans un premier tuyau (2), le bord périphérique préformé buttant contre la paroi intérieure du premier tuyau. Puis on fait coulisser sur le second tuyau un manchon pourvu d'une extrémité préformée, laquelle vient buter contre la paroi extérieure du premier tuyau, et on visse un écrou sur le filetage formé sur l'autre extrémité du second tuyau, l'écrou comprimant ensemble les deux extrémités préformées, entre lesquelles se trouvent les moyens d'étanchéité. De cette façon, on peut exécuter rapidement un raccord entre deux tuyaux, sans avoir à utiliser d'autres accessoires.
PCT/NL1997/000533 1996-09-24 1997-09-24 Systeme de raccord de tuyaux et procede destine a executer un raccord de tuyaux formant un angle avec la paroi d'un tuyau WO1998013641A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1004099A NL1004099C2 (nl) 1996-09-24 1996-09-24 Buisverbindingssysteem en werkwijze voor het tot stand brengen van een onder een hoek in de wand van een buis lopende buisverbinding.
NL1004099 1996-09-24

Publications (1)

Publication Number Publication Date
WO1998013641A1 true WO1998013641A1 (fr) 1998-04-02

Family

ID=19763555

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1997/000533 WO1998013641A1 (fr) 1996-09-24 1997-09-24 Systeme de raccord de tuyaux et procede destine a executer un raccord de tuyaux formant un angle avec la paroi d'un tuyau

Country Status (2)

Country Link
NL (1) NL1004099C2 (fr)
WO (1) WO1998013641A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1070902A2 (fr) 1999-07-22 2001-01-24 Etex Raccord de branchement de canalisation et procédé pour sa fabrication
EP1217130A1 (fr) * 2000-12-21 2002-06-26 Kwc Ag Dispositif de fixation pour des parties de robinetterie sanitaire
US6530606B2 (en) 2000-12-21 2003-03-11 Kwc Ag Fastening element for fitting parts
NL2009374C2 (nl) * 2012-08-28 2014-03-03 Nyloplast Europ Bv Verbindingssysteem omvattende een kunststof element en een dwars daarop aan te brengen kunststof buis.
WO2018085876A1 (fr) * 2016-11-09 2018-05-17 Tefco Distributors Tasmania Pty Ltd Kit de raccordement de tuyau et procédé correspondant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX350270B (es) * 2011-07-22 2017-08-31 Joseph Ficker James Sistemas y métodos para acoplar tuberías con un mecanismo de acoplamiento angulado.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246854A (en) * 1964-03-30 1966-04-19 Bahnson Co Nozzle structure for air trunk of traveling cleaner
FR2502736A1 (fr) * 1981-03-30 1982-10-01 Megias Bernard Dispositif de raccordement d'un conduit de piquage sur un conduit principal
FR2518699A2 (fr) * 1981-03-30 1983-06-24 Megias Bernard Dispositif et procede de raccordement d'un conduit de piquage sur un conduit principal
US4717078A (en) * 1984-08-20 1988-01-05 Arp George F Eyeball fitting for increasing flow of return water to swimming pool
WO1993015350A1 (fr) * 1992-01-23 1993-08-05 Uponor N.V. Procede d'embranchement d'un tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246854A (en) * 1964-03-30 1966-04-19 Bahnson Co Nozzle structure for air trunk of traveling cleaner
FR2502736A1 (fr) * 1981-03-30 1982-10-01 Megias Bernard Dispositif de raccordement d'un conduit de piquage sur un conduit principal
FR2518699A2 (fr) * 1981-03-30 1983-06-24 Megias Bernard Dispositif et procede de raccordement d'un conduit de piquage sur un conduit principal
US4717078A (en) * 1984-08-20 1988-01-05 Arp George F Eyeball fitting for increasing flow of return water to swimming pool
WO1993015350A1 (fr) * 1992-01-23 1993-08-05 Uponor N.V. Procede d'embranchement d'un tube

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1070902A2 (fr) 1999-07-22 2001-01-24 Etex Raccord de branchement de canalisation et procédé pour sa fabrication
EP1217130A1 (fr) * 2000-12-21 2002-06-26 Kwc Ag Dispositif de fixation pour des parties de robinetterie sanitaire
US6530606B2 (en) 2000-12-21 2003-03-11 Kwc Ag Fastening element for fitting parts
US6623045B2 (en) 2000-12-21 2003-09-23 Kwc Ag Fastening device for fitting parts
NL2009374C2 (nl) * 2012-08-28 2014-03-03 Nyloplast Europ Bv Verbindingssysteem omvattende een kunststof element en een dwars daarop aan te brengen kunststof buis.
BE1022237B1 (nl) * 2012-08-28 2016-03-04 Nyloplast Europe B.V. Verbindingssysteem omvattende een kunststof element en een dwars daarop aan te brengen kunststof buis
WO2018085876A1 (fr) * 2016-11-09 2018-05-17 Tefco Distributors Tasmania Pty Ltd Kit de raccordement de tuyau et procédé correspondant

Also Published As

Publication number Publication date
NL1004099C2 (nl) 1998-03-26

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