NL2013065B1 - Coupling or fitting for a pipe. - Google Patents

Coupling or fitting for a pipe. Download PDF

Info

Publication number
NL2013065B1
NL2013065B1 NL2013065A NL2013065A NL2013065B1 NL 2013065 B1 NL2013065 B1 NL 2013065B1 NL 2013065 A NL2013065 A NL 2013065A NL 2013065 A NL2013065 A NL 2013065A NL 2013065 B1 NL2013065 B1 NL 2013065B1
Authority
NL
Netherlands
Prior art keywords
coupling
fitting
pipe
fibers
tape
Prior art date
Application number
NL2013065A
Inventor
Hulsebos Michel
Giesen Leo
Wellink Roel
Nijsen Dries
Wijlens Jeroen
Original Assignee
Fischer Georg Waga Nv
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 Fischer Georg Waga Nv filed Critical Fischer Georg Waga Nv
Priority to NL2013065A priority Critical patent/NL2013065B1/en
Application granted granted Critical
Publication of NL2013065B1 publication Critical patent/NL2013065B1/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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/04—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
    • 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
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/10—Joints with packing adapted to sealing by fluid pressure the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe
    • 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
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • F16L47/065—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket, the sealing rings being placed previously on the male part
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • F16L47/12—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end 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
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Coupling or fitting for a pipe, provided with an externally wound fiber reinforced tape. Said tape comprises a thermoplastic material and is melted on the coupling's or fitting's external surface with laser heating. Preferably said coupling or fitting also comprises a thermoplastic material. The fibers are selected from the group comprising glass fibers, carbon fibers, aramide fibers.

Description

Coupling or fitting for a pipe
The invention relates to a coupling or fitting for a pipe.
Particularly when the coupling or fitting is made of a plastic material, said coupling or fitting has limited reliability when subjected to continued stress. As a result such plastic couplings or fittings regularly fail and are not acceptable or suitable for applications requiring long stand times, such as several decades up to 50 years or more.
In the prior art this problem has been recognized and efforts to resolve it concentrate on applying increased wall thicknesses, or complicated constructions of the walls of the coupling or fitting. Notable examples are EP 1 579 141; US 4,023,835; and US 2011/01686.
Is an object of the invention to increase the reliability and stand time of existing couplings or fittings at low costs .
The coupling or fitting of the invention has the features of one or more of the appended claims.
In a first aspect of the invention the coupling or fitting is provided with an externally wound fiber reinforced tape. This surprisingly simple measure has a tremendous effect on the reliability and security of the coupling or fitting.
The fibers can be of any suitable material, but preferably the fibers are selected from the group comprising glass fibers, carbon fibers, aramide fibers. Particularly glass fibers provide good results.
Its ease of applying the tape externally on the surface of the coupling or fitting is promoted by arranging that the tape substantially comprises a thermoplastic material. It further provides the notable advantage that the tape can be melted on the coupling's or fitting's external surface, preferably with laser heating. Practice has proven that this is an effective and swift way of applying the reinforced tape externally on the coupling or fitting, with little impact on the manufacturing costs. It is shown that the results are particularly satisfying when also said coupling or fitting comprises a thermoplastic material. Particularly desirable is that the fibers are predominantly oriented in the tape's longitudinal direction, which is circumferentially around the coupling's or fitting's external surface.
The invention will hereinafter be further elucidated with reference to the drawing of an exemplary embodiment of an apparatus according to the invention that is not limiting as to the appended claims.
In the drawing: -figure 1 shows schematically a first embodiment of a coupling or fitting according to the invention; -figures 2A and 2B show a second embodiment of the coupling or fitting according to the invention with different seals; and -figure 3A and 3B show a third embodiment of the coupling or fitting according to the invention with different seals .
Whenever in the figures the same reference numerals are applied, these numerals refer to the same parts.
In all figures 1, 2A/B and 3A/3B a coupling 1 is shown as applied for coupling to a pipe 2.
In figure 1 the coupling 1 comprises the parts 1A and IB that are connected with each other by a bolt 3 and nut 4 connection. By tightening the bolt 3 and nut 4 connection, the slanting inner surfaces of the parts 1A and IB acting on the pressure organ 5 cause that said pressure organ 5 is pressed against the pipe 2. A seal 6 that is provided between the pressure organ 5 and the pipe part 1A as well as between the pressure organ 5 and the pipe 2 prevents leakage when the coupling 1 is applied to the pipe 2.
In figure 2A and figure 2B the coupling 1 comprises a circumferentially outer part 1C and a circumferentially inner part ID. The coupling 1 also comprises a pressure organ 5 between slanting surfaces of the outer part 1C and inner part ID. By means of bellows 6 that can be pressurized from outside the coupling 1, the inner part ID is pressed towards the slanting inner surface of the outer part 1C with the pressure organ 5 in between. This action causes that the pressure organ 5 presses against the pipe 2. In figure 2A a seal 6 is applied which runs from a position between the pressure organ 5 and the pipe 2 to a position where the seal 6 is connected to the inner part ID. In figure 2B the seal 6 runs from a position between the pressure organ 5 and the pipe 2 to a position where the seal 6 is positioned between the pressure organ 5 and the slanting inner surface of the outer part 1C. Both embodiments provide an effective seal against leakage when the coupling 1 is mounted on the pipe 2.
In figure 3A and figure 3B the coupling 1 comprises a circumferentially outer part IE cooperating with a circumferentially inner part IF. The outer part IE and the inner part IF are provided with cooperating screw threads and with slanting inner surfaces acting on a pressure organ 5, to arrange that said slanting surfaces of said outer part IE and inner part IF cause that the pressure organ 5 is pressed towards and against pipe 2 when the inner part IF and outer part IE are screwed into each other. In both embodiments of figure 3A and figure 3B a seal 6 is provided. In the embodiment of figure 3A the seal 6 runs from a position between the pressure organ 5 and the pipe 2 until a position between the pressure organ 5 and the inner part IF of the coupling 1. In the embodiment of figure 3B the seal 6 runs from a position between the pressure organ 5 and the pipe 2 until a position where the seal 6 is connected to the inner part IF of the coupling 1. Again the seal 6 effectively prevents leakage of the coupling 1 as applied to the pipe 2.
All the variant embodiments of the coupling 1 as shown in figures 1, 2A/2B and 3A/3B are at predefined positions provided with an externally wound fiber reinforced tape 7. Preferably the tape 7 comprises a thermoplastic material and is melted on the coupling's or fitting's external surface 8. This can be effectively done with laser heating, particularly in the embodiment wherein said coupling 1 or fitting comprises a thermoplastic material.
The fibers of the fiber reinforced tape 7 that are schematically indicated with reference 9 are selected from the group comprising glass fibers, carbon fibers, aramide fibers. The figures clearly show that preferably the fibers 9 are predominantly oriented in the longitudinal direction of the tape 7, which is circumferentially around the external surface 8 of the coupling 1 or fitting.
Although the invention has been discussed in the foregoing with reference to an exemplary embodiment of the apparatus of the invention, the invention is not restricted to this particular embodiment which can be varied in many ways without departing from the gist of the invention. The discussed exemplary embodiment shall therefore not be used to construe the appended claims strictly in accordance therewith. On the contrary the embodiment is merely intended to explain the wording of the appended claims without intent to limit the claims to this exemplary embodiment. 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 this exemplary embodiment.

Claims (8)

1. Coupling (1) or fitting for a pipe (2), characterized in that said coupling (1) or fitting is provided with an externally wound fiber reinforced tape (7).
2. Coupling (1) or fitting for a pipe (2) according to claim 1, characterized in that the tape (7) comprises a thermoplastic material.
3. Coupling (1) or fitting for a pipe (2) according to claim 1 or 2, characterized in that the tape (7) is melted on the coupling's or fitting's external surface (8).
4. Coupling (1) or fitting for a pipe (2) according to claim 3, characterized in that the tape (7) is melted on the coupling's or fitting's external surface (8) with laser heating.
5. Coupling (1) or fitting for a pipe (2) according to any one of claims 1-4, characterized in that said coupling (1) or fitting comprises a thermoplastic material.
6. Coupling (1) or fitting for a pipe (2) according to any one of the previous claims 1-5, characterized in that the fibers (9) are selected from the group comprising glass fibers, carbon fibers, aramide fibers.
7.
Coupling (1) or fitting for a pipe (2) according to any one of the previous claims 1-6, characterized in that the fibers (9) are predominantly oriented in the tape's longitudinal direction, which is circumferentially around the coupling's or fitting's external surface (8).
NL2013065A 2014-06-25 2014-06-25 Coupling or fitting for a pipe. NL2013065B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2013065A NL2013065B1 (en) 2014-06-25 2014-06-25 Coupling or fitting for a pipe.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2013065A NL2013065B1 (en) 2014-06-25 2014-06-25 Coupling or fitting for a pipe.

Publications (1)

Publication Number Publication Date
NL2013065B1 true NL2013065B1 (en) 2016-07-07

Family

ID=51358049

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2013065A NL2013065B1 (en) 2014-06-25 2014-06-25 Coupling or fitting for a pipe.

Country Status (1)

Country Link
NL (1) NL2013065B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH652472A5 (en) * 1982-11-05 1985-11-15 Hitachi Shipbuilding Eng Co CONDUIT JOINING DEVICE.
US4559974A (en) * 1982-10-01 1985-12-24 Fawley Norman Apparatus and method of arresting ductile fracture propagation
EP0794378A2 (en) * 1996-03-04 1997-09-10 Georg Fischer WAGA N.V. A coupling device
US20010015234A1 (en) * 2000-02-22 2001-08-23 Hans-Georg Hillenbrand Pipe with crack stopper feature, and process of protecting a pipe against propagation of cracks
WO2005063465A1 (en) * 2003-12-22 2005-07-14 Ads Drainage Systems Inc. Method and device for applying a reinforcement to a plastic pipe by way of a wrap welding process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559974A (en) * 1982-10-01 1985-12-24 Fawley Norman Apparatus and method of arresting ductile fracture propagation
CH652472A5 (en) * 1982-11-05 1985-11-15 Hitachi Shipbuilding Eng Co CONDUIT JOINING DEVICE.
EP0794378A2 (en) * 1996-03-04 1997-09-10 Georg Fischer WAGA N.V. A coupling device
US20010015234A1 (en) * 2000-02-22 2001-08-23 Hans-Georg Hillenbrand Pipe with crack stopper feature, and process of protecting a pipe against propagation of cracks
WO2005063465A1 (en) * 2003-12-22 2005-07-14 Ads Drainage Systems Inc. Method and device for applying a reinforcement to a plastic pipe by way of a wrap welding process

Similar Documents

Publication Publication Date Title
CN107681624B (en) End piece device of superconducting cable corrugated pipe and using method thereof
CA2944828C (en) Fitting for coupling to a pipe
NZ748068A (en) Repair of pipes
MX353135B (en) A safety connecting device, in particular for piping, an end-coupler for such device, and a method for manufacturing a nut therefor.
US20150267729A1 (en) Profile clamp
WO2017202421A3 (en) Curable liners for the rehabilitation of fluid-conducting systems
CA2888031A1 (en) Connection system for corrugated pipes
WO2013000556A3 (en) Lining tube for refurbishing fluid-conveying systems
MX2018007647A (en) Pipe connection.
SA523442891B1 (en) Threaded tubular end protector
WO2020064910A8 (en) Two-part high-strength screw
NL2013065B1 (en) Coupling or fitting for a pipe.
KR102033181B1 (en) Screw joint apparatus for connecting flange-like pipe ends of two pipes
BR112017012082A2 (en) improvement of mechanically coated rigid pipe bending behavior
CN105114422A (en) Detachable expansion bolt
EP3146249B1 (en) Fitting for coupling to a pipe
CN104653923B (en) Quick coupling
US2472455A (en) Dual grip contractible hose coupling
JP6087689B2 (en) Union fitting
US20090085346A1 (en) Connecting structure for a pipe
KR20160143258A (en) The coupler for plumbing connection
SI2202439T1 (en) Threaded clamp connection for mounting elongated objects or tubes
IT201800009957A1 (en) TIGHTENING FITTING FOR PIPES INCLUDING AN SWINGING FLANGE
KR20150003179U (en) Sealed nuts
CN204692696U (en) With the high-temperature resistant ball valve of plastic joint

Legal Events

Date Code Title Description
MM Lapsed because of non-payment of the annual fee

Effective date: 20170701