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WO2015177259A1 - Fitting for coupling to a pipe - Google Patents

Fitting for coupling to a pipe Download PDF

Info

Publication number
WO2015177259A1
WO2015177259A1 PCT/EP2015/061204 EP2015061204W WO2015177259A1 WO 2015177259 A1 WO2015177259 A1 WO 2015177259A1 EP 2015061204 W EP2015061204 W EP 2015061204W WO 2015177259 A1 WO2015177259 A1 WO 2015177259A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
sleeve
pipe
fitting
pressure member
Prior art date
Application number
PCT/EP2015/061204
Other languages
French (fr)
Inventor
Jeroen WIJLENS
Michel Paul Hulsebos
Roel Alexander Maria WELLINK
Original Assignee
Georg Fischer Waga N.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
Priority claimed from NL2012869A external-priority patent/NL2012869B1/en
Priority to BR112016026232-8A priority Critical patent/BR112016026232B1/en
Priority to ES15723531.8T priority patent/ES2689572T3/en
Priority to RU2016144054A priority patent/RU2664722C2/en
Priority to SI201530396T priority patent/SI3146249T1/en
Priority to RS20180960A priority patent/RS57544B1/en
Priority to US15/311,451 priority patent/US10655765B2/en
Priority to EP15723531.8A priority patent/EP3146249B1/en
Application filed by Georg Fischer Waga N.V. filed Critical Georg Fischer Waga N.V.
Priority to SG11201608279XA priority patent/SG11201608279XA/en
Priority to PL15723531T priority patent/PL3146249T3/en
Priority to DK15723531.8T priority patent/DK3146249T3/en
Priority to AU2015261882A priority patent/AU2015261882B2/en
Priority to HRP20181356TT priority patent/HRP20181356T1/en
Priority to NZ726910A priority patent/NZ726910A/en
Priority to JP2017513337A priority patent/JP6588088B2/en
Priority to CA2944828A priority patent/CA2944828C/en
Publication of WO2015177259A1 publication Critical patent/WO2015177259A1/en

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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members

Definitions

  • the invention relates to a fitting for coupling to at least one pipe.
  • EP-A-0 794 378 discloses a fitting for coupling to at least one pipe, comprising:
  • a pressure member for applying a pressure to the sleeve and to the pipe
  • the sealing member is arranged between the pressure member and the pipe and be-0 tween the pressure member and the sleeve in order to provide the required seal between the sleeve and the pipe .
  • a fitting according to the preamble of the main claim is further known from WO2011/120669.
  • the actuation5 means of the fitting are arranged so as to have the pressure member apply a pressure capable to withstand for a stand time of not less than 50 years axial forces that may act on the pipe which is received in the sleeve ; to provide sufficient pressure both on the part of the sealing member positioned be-0 tween the pressure member and the pipe and on the part of the sealing member positioned between the pressure member and the sleeve ; and to compensate for relaxation of the material of the fitting that may occur during said, fifty-year stand time.
  • the pressures that are thus applied to the sealing member, in5 particular on the part of the sealing member between the pressure member and the sleeve are at such a high level that the sealing member, usually rubber, is overstressed in particular when the pipe diameter is larger than 300 mm. It is particularly with diameters larger than 300 mm that the reguired pre- tension on the part of the sealing member between the pressure member and the sleeve becomes too high for the rubber of the sealing member to survive and maintain its long-term physical properties .
  • the fitting has the features of one or more of the appended claims.
  • the fitting of the invention first and foremost is arranged with the feature that the at least one sealing member is connected with or pressed against the sleeve without being positioned between the pressure member and the sleeve.
  • This arranges for a completely closed seal between the sleeve and the pipe wherein the sealing property of the fitting of the invention is not linked to the pressure applied by the pressure member. Accordingly the level of the pressure applied by the pressure member has no bearing anymore on the lifetime of the sealing between the pressure member and the sleeve.
  • opposite extremities of the at least one sealing member are connected to the pressure mem ⁇ ber and the sleeve respectively.
  • the at least one sealing member is connected with or pressed against the sleeve without being positioned between the slanting surfaces of the pressure ring and the pressure member. This contributes to the longevity of the fitting of the invention.
  • the fitting comprises a clip for attaching the sealing member to the sleeve. This makes mounting and dismounting of the fitting very easy without sacrificing reliability.
  • the figure shows an embodiment of the fitting 1 of the invention for application with a pipe 2.
  • the fitting has a sleeve 10 for receiving the pipe 2, at least one sealing mem- ber 4 to provide a seal between the sleeve 10 and the pipe 2, a pressure member 5 for applying a pressure to the sleeve 10 and to the pipe 2, gripper teeth 6 provided on the pressure member 5 and arranged to act on the pipe 2, and actuation means 3, 7 that are tuneable from a single point outside the sleeve 10 for arranging that a pressure is applied to the pressure member 5.
  • the actuation means 3, 7 comprise a pressure ring 3 acting on the pressure member 5 through adjoining slanting contacting surfaces 11', 11'' of said pressure ring 3 and pressure member 5, respectively.
  • This a a force applied to the pressure member 5 in parallel with a longitudi ⁇ nal body axis of the sleeve 10 or the pipe 2 acts on the pressure member 5 with a. component perpendicular to said longitudinal body axis of the sleeve 10 on the pipe 2 received in said sleeve 10.
  • the sealing member 4 is in accordance with the invention positioned between the pressure member 5 and the pipe 2 and is connected with or pressed against the sleeve 10 with ⁇ out being positioned between the pressure member 5 and the sleeve 10.
  • fitting 1 of the invention is that it is provided with said sealing member 4 without same being positioned between the slanting surface 11 ' of the pressure ring 3 and the slanting surface 11*' of the pressure member 5.
  • opposite extremities of the at least one sealing member 4 are connected to the pressure member 5 and to the sleeve 10 respectively.
  • the fitting 1 of the invention is preferably further provided with a. clip 13 for attaching the sealing member 4 to the sleeve 10. This makes mounting and dismounting of the fitting very easy without sac ⁇ rificing reliability .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Gasket Seals (AREA)

Abstract

A fitting (1) for coupling to at least one pipe (2), comprising : a sleeve (10) for receiving the pipe (2); at least one sealing member (4) to provide a seal be- tween the sleeve (10) and the pipe (2); a pressure member (5) for applying a pressure to the sleeve (10) and to the pipe (2); gripper teeth (6) provided on the pressure member (5) and arranged to act on the pipe (2); and actuation means (3, 7) for exerting a pressure to the pressure member (5) comprising a pressure ring (3) acting on the pressure member (5) through adjoining slanting contacting surfaces (11% 11'') of said pressure ring (3) and pressure member (5), respectively; wherein the at least one sealing member (4) is positioned between the pressure member (5) and the pipe (2); wherein the at least one sealing member (4) is connected with or pressed against the sleeve (10) without being positioned between the pressure member (5) and the sleeve (10).

Description

Fitting for coupling to a pipe
The invention relates to a fitting for coupling to at least one pipe.
5 EP-A-0 794 378 discloses a fitting for coupling to at least one pipe, comprising:
- a. sleeve for receiving the pipe;
- at least one sealing member to provide a seal between the sleeve and the pipe ;
0 - a pressure member for applying a pressure to the sleeve and to the pipe;
- gripper teeth provided on the pressure member and arranged to act on the pipe; and
- actuation means for exerting a pressure to the
-5- -p-r-e-s-s-u-re menibex comprising a pressure ring acting' on the pressure member through adjoining slanting contacting surfaces of said pressure ring and pressure member respectively .
In the fitting of EP-A-Q 794 378 the sealing member is arranged between the pressure member and the pipe and be-0 tween the pressure member and the sleeve in order to provide the required seal between the sleeve and the pipe .
A fitting according to the preamble of the main claim is further known from WO2011/120669.
During installation of the fitting the actuation5 means of the fitting are arranged so as to have the pressure member apply a pressure capable to withstand for a stand time of not less than 50 years axial forces that may act on the pipe which is received in the sleeve ; to provide sufficient pressure both on the part of the sealing member positioned be-0 tween the pressure member and the pipe and on the part of the sealing member positioned between the pressure member and the sleeve ; and to compensate for relaxation of the material of the fitting that may occur during said, fifty-year stand time. The pressures that are thus applied to the sealing member, in5 particular on the part of the sealing member between the pressure member and the sleeve are at such a high level that the sealing member, usually rubber, is overstressed in particular when the pipe diameter is larger than 300 mm. It is particularly with diameters larger than 300 mm that the reguired pre- tension on the part of the sealing member between the pressure member and the sleeve becomes too high for the rubber of the sealing member to survive and maintain its long-term physical properties .
It is therefore an object of the invention to provide a solution to this problem, and to provide a fitting having a lifetime of at least 50 years, and which can withstand axial forces that may come to work on the pipe during this lifetime whilst maintaining its sealing properties, and which can cope with the general deterioration of the fitting during its lifetime, also when the fitting is dimensioned for pipes having a diameter larger than 300 mm.
According to the invention the fitting has the features of one or more of the appended claims.
The fitting of the invention first and foremost is arranged with the feature that the at least one sealing member is connected with or pressed against the sleeve without being positioned between the pressure member and the sleeve. This arranges for a completely closed seal between the sleeve and the pipe wherein the sealing property of the fitting of the invention is not linked to the pressure applied by the pressure member. Accordingly the level of the pressure applied by the pressure member has no bearing anymore on the lifetime of the sealing between the pressure member and the sleeve.
In a suitable embodiment opposite extremities of the at least one sealing member are connected to the pressure mem¬ ber and the sleeve respectively.
In a further suitable embodiment the at least one sealing member is connected with or pressed against the sleeve without being positioned between the slanting surfaces of the pressure ring and the pressure member. This contributes to the longevity of the fitting of the invention.
In a particular embodiment it is desirable that the fitting comprises a clip for attaching the sealing member to the sleeve. This makes mounting and dismounting of the fitting very easy without sacrificing reliability.
The invention will hereinafter be further elucidated with reference to the drawing.
In the drawing of a single figure a preferred embod- iment is shown of the fitting of the invention.
The figure shows an embodiment of the fitting 1 of the invention for application with a pipe 2. The fitting has a sleeve 10 for receiving the pipe 2, at least one sealing mem- ber 4 to provide a seal between the sleeve 10 and the pipe 2, a pressure member 5 for applying a pressure to the sleeve 10 and to the pipe 2, gripper teeth 6 provided on the pressure member 5 and arranged to act on the pipe 2, and actuation means 3, 7 that are tuneable from a single point outside the sleeve 10 for arranging that a pressure is applied to the pressure member 5.
The actuation means 3, 7 comprise a pressure ring 3 acting on the pressure member 5 through adjoining slanting contacting surfaces 11', 11'' of said pressure ring 3 and pressure member 5, respectively. This a a force applied to the pressure member 5 in parallel with a longitudi¬ nal body axis of the sleeve 10 or the pipe 2, acts on the pressure member 5 with a. component perpendicular to said longitudinal body axis of the sleeve 10 on the pipe 2 received in said sleeve 10.
The sealing member 4 is in accordance with the invention positioned between the pressure member 5 and the pipe 2 and is connected with or pressed against the sleeve 10 with¬ out being positioned between the pressure member 5 and the sleeve 10.
One of the further characterizing features of the fitting 1 of the invention is that it is provided with said sealing member 4 without same being positioned between the slanting surface 11 ' of the pressure ring 3 and the slanting surface 11*' of the pressure member 5.
Furthermore it is preferable that opposite extremities of the at least one sealing member 4 are connected to the pressure member 5 and to the sleeve 10 respectively.
The figure further shows that the fitting 1 of the invention is preferably further provided with a. clip 13 for attaching the sealing member 4 to the sleeve 10. This makes mounting and dismounting of the fitting very easy without sac¬ rificing reliability .
Although the invention has been discussed in the foregoing with reference to a variety of embodiments of the fitting of the invention, the invention is not restricted to these particular embodiments which can be varied further in many ways without departing from the invention. The discussed exemplary embodiments shall therefore not be used to construe the appended claims strictly in accordance therewith. On the contrary the embodiments are merely intended to explain the wording of the appended claims without intent to limit the claims to the discussed exemplary embodiments. The scope of protection of the invention shall therefore be construed in accordance with the appended claims only, wherein a possible ambiguity in the wording of the claims shall be resolved using these exemplary embodiments.

Claims

1. A fitting (1) for coupling to at least one pipe ( 2 ) , comprising :
- a sleeve (10) for receiving the pipe (2);
- at least one sealing member (4) to provide a seal be- tween the sleeve (10) and the pipe (2);
- a pressure member (5) for applying a pressure to the sleeve (10) and to the pipe (2);
- gripper teeth (6) provided on the pressure member (5) and arranged to act on the pipe (2) ; and
- actuation means (3, 7) for exerting a pressure to the pressure member (5) comprising a pressure ring (3) acting on the pressure member (5) through adjoining slanting contacting surfaces {11*, 11'') of said pressure ring (3) and pressure member (5), respectively;
- wherein the at least one sealing member (4) is positioned between the pressure member (5) and the pipe (2); characterized in that
the at least one sealing member (4) is connected with or
pressed against the sleeve ( 10 ) without being positioned be- tween the pressure member (5) and the sleeve (10) .
2. The fitting according to claim 1, characterized in th t opposite extremities of the at least one sealing member (4) are connected to the pressure member (5) and the sleeve ( 10 ) respectively.
3. The fitting (1) according to claim 1 or 2, characterized in that the at least one sealing member (4) is connected with or pressed against the sleeve ( 10 ) without being positioned between the slanting surfaces (11', 11' ' ) of the pressure ring (3) and the pressure member (5) .
4. The fitting according to any one of the previous claims 1 - 3, characteriz it comprises a clip ( 13 ) for attaching the sealing member (4) to the sleeve ( 10 ) .
PCT/EP2015/061204 2014-05-22 2015-05-21 Fitting for coupling to a pipe WO2015177259A1 (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
CA2944828A CA2944828C (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
SG11201608279XA SG11201608279XA (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
RU2016144054A RU2664722C2 (en) 2014-05-22 2015-05-21 Mount assembly for connection with tube
SI201530396T SI3146249T1 (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
RS20180960A RS57544B1 (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
US15/311,451 US10655765B2 (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
EP15723531.8A EP3146249B1 (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
BR112016026232-8A BR112016026232B1 (en) 2014-05-22 2015-05-21 accessory (adapter) to attach to a tube
DK15723531.8T DK3146249T3 (en) 2014-05-22 2015-05-21 CONNECTOR TO CONNECT WITH A PIPE
ES15723531.8T ES2689572T3 (en) 2014-05-22 2015-05-21 Accessory to attach to a pipe
PL15723531T PL3146249T3 (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
AU2015261882A AU2015261882B2 (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
HRP20181356TT HRP20181356T1 (en) 2014-05-22 2015-05-21 PIPE CONNECTION CONNECTOR
NZ726910A NZ726910A (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe
JP2017513337A JP6588088B2 (en) 2014-05-22 2015-05-21 Fittings for connecting to pipes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL2012869A NL2012869B1 (en) 2014-05-22 2014-05-22 Fitting for coupling to a pipe.
NL2012869 2014-05-22
NL2013241 2014-07-23
NL2013241A NL2013241B1 (en) 2014-05-22 2014-07-23 Fitting for coupling to a pipe.

Publications (1)

Publication Number Publication Date
WO2015177259A1 true WO2015177259A1 (en) 2015-11-26

Family

ID=53189837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/061204 WO2015177259A1 (en) 2014-05-22 2015-05-21 Fitting for coupling to a pipe

Country Status (2)

Country Link
CA (1) CA2944828C (en)
WO (1) WO2015177259A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2019920B1 (en) * 2017-11-16 2019-05-22 Fischer Georg Waga Nv Coupling device
AT524049A4 (en) * 2020-12-15 2022-02-15 E Hawle Armaturenwerke Gmbh PIPE CONNECTION DEVICE WITH A SEAL CARRIER
AT524050A4 (en) * 2020-12-15 2022-02-15 E Hawle Armaturenwerke Gmbh Pipe connection device with a locking wedge and a braking element

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10677381B2 (en) 2017-04-19 2020-06-09 Mueller International, Llc Joint restraint device
US11215306B2 (en) 2017-04-19 2022-01-04 Mueller International, Llc Joint restraint device
US11199280B2 (en) 2017-04-19 2021-12-14 Mueller Intemational, LLC Joint restraint device
US11131412B2 (en) 2017-04-19 2021-09-28 Mueller International, Llc Joint restraint device
US10941887B2 (en) 2017-07-13 2021-03-09 Mueller International Llc Wide range coupling
US11193609B2 (en) 2018-02-28 2021-12-07 Mueller International, Llc Pipe coupling
US11473705B2 (en) 2018-08-22 2022-10-18 Mueller International, Llc Joint restraint device
US10774508B2 (en) 2018-09-04 2020-09-15 Mueller International, Llc Hydrant shoe assembly
US11162621B2 (en) 2019-02-04 2021-11-02 Mueller International, Llc Gland assembly
US11396965B2 (en) 2019-07-19 2022-07-26 Mueller International, Llc Restraint gripper cover with lockout breakaway

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0794378A2 (en) 1996-03-04 1997-09-10 Georg Fischer WAGA N.V. A coupling device
WO2003010461A1 (en) * 2001-07-25 2003-02-06 Philmac Pty Ltd Coupling or transition fitting for the connection of metal or plastic pipes
GB2415472A (en) * 2004-06-23 2005-12-28 Gloway Internat Inc A pipe coupling including hydraulically actuated pipe grippingmembers
EP1906073A1 (en) * 2006-09-26 2008-04-02 Ludwig Frischhut GmbH & Co. KG Sealing organ for a tube
WO2011120669A1 (en) 2010-04-01 2011-10-06 E. Hawle Armaturenwerke Gmbh Pipe connecting device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0794378A2 (en) 1996-03-04 1997-09-10 Georg Fischer WAGA N.V. A coupling device
WO2003010461A1 (en) * 2001-07-25 2003-02-06 Philmac Pty Ltd Coupling or transition fitting for the connection of metal or plastic pipes
GB2415472A (en) * 2004-06-23 2005-12-28 Gloway Internat Inc A pipe coupling including hydraulically actuated pipe grippingmembers
EP1906073A1 (en) * 2006-09-26 2008-04-02 Ludwig Frischhut GmbH & Co. KG Sealing organ for a tube
WO2011120669A1 (en) 2010-04-01 2011-10-06 E. Hawle Armaturenwerke Gmbh Pipe connecting device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2019920B1 (en) * 2017-11-16 2019-05-22 Fischer Georg Waga Nv Coupling device
EP3486542A3 (en) * 2017-11-16 2019-08-07 Georg Fischer WAGA N.V. Coupling device
EP3892905A1 (en) 2017-11-16 2021-10-13 Georg Fischer WAGA N.V. Coupling device
AT524049A4 (en) * 2020-12-15 2022-02-15 E Hawle Armaturenwerke Gmbh PIPE CONNECTION DEVICE WITH A SEAL CARRIER
AT524050A4 (en) * 2020-12-15 2022-02-15 E Hawle Armaturenwerke Gmbh Pipe connection device with a locking wedge and a braking element
AT524050B1 (en) * 2020-12-15 2022-02-15 E Hawle Armaturenwerke Gmbh Pipe connection device with a locking wedge and a braking element
AT524049B1 (en) * 2020-12-15 2022-02-15 E Hawle Armaturenwerke Gmbh PIPE CONNECTION DEVICE WITH A SEAL CARRIER
WO2022128906A1 (en) * 2020-12-15 2022-06-23 E. Hawle Armaturenwerke Gmbh Pipe connection device with a seal support

Also Published As

Publication number Publication date
CA2944828C (en) 2020-10-27
CA2944828A1 (en) 2015-11-26

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