Pipe, pipe connection and pipeline system
Assignee8193053 Canada Ltd..
InventorsSamuel Glen Bouey, David McLeod, Dave Sheehan
Life of this patent
Estimating the term…
Abstract
A pipeline system is enclosed including unlined or plastic lined pipes. A mechanical metal to metal connection is employed that can provide a fluid tight seal. A pipe coupling may be employed to span the connection. Plastic lined pipes can have their plastic liners connected to form a fluid tight bladder. Electro-fusion may be employed.
Claims60
A pipe connection assembly comprising:
- a first pipe section and a second pipe section, each of the first pipe section and the second pipe section including:
- a metal tube having a length, an inner surface defining an inner diameter, an outer surface, and a wall thickness defined by the distance between the inner surface and the outer surface;
- and;
- a pipe coupling for mechanically engaging the first pipe section to the second pipe section, the pipe coupling formed as a cylindrical tube and including a first tubular end configured to mechanically engage the first pipe section and a second tubular end configured to mechanically engage the second pipe section.
A pipe connection assembly comprising:
- a first pipe section and a second pipe section, each of the first pipe section and the second pipe section including:
- a metal tube having a length, an inner surface defining an inner diameter, an outer surface, and a wall thickness defined by the distance between the inner surface and the outer surface, and a plastic liner within the metal tube, the plastic liner formed of a plastic material compatible with electro-fusion and having a length and an inner bore;
- a pipe coupling for connecting between the first pipe section and the second pipe section;
- and,
- an electro-fusion assembly including:
- a plastic sleeve;
- an electrical conductor supported by the plastic sleeve;
- and an electrical contact for conducting electricity to the electrical conductor, the electrical contact exposed at the outer surface of the metal coupling shell.
A method for pipeline construction comprising:
- joining a first pipe section to a second pipe section by mechanically engaging a pipe coupling to a first metal tube of the first pipe section and mechanically engaging the pipe coupling to a second metal tube of the second pipe section.
A pipe section for construction of a pipeline comprising:
- a metal tube having a length, an inner surface, an outer surface, and a wall thickness defined by the distance between the inner surface and the outer surface, the metal tube having a bell end wherein the bell end has an inner diameter greater than a normal inner diameter along a portion of the metal tube adjacent the bell end;
- and
- a plastic liner formed of a plastic material compatible with electro-fusion, the plastic liner having a length, an inside diameter and an outer diameter substantially equal to the normal inner diameter, the plastic liner being positioned within the metal tube with a portion of the plastic liner extending into the bell end with an annulus formed between the plastic liner and the bell end.
An electro-fusion assembly installed in a metal shell, the electro-fusion assembly including:
- a plastic sleeve within the metal shell;
- an electrical conductor supported by the plastic sleeve;
- an electrical contact for conducting electricity to the electrical conductor, the electrical contact exposed on an outer surface of the metal shell;
- and
- a fluid tight seal and an electrically insulative liner between the contact and the metal shell.
Dependencies are inferred from the claim text.