Composite Pipe And A Method Of Manufacturing A Composite Pipe
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Abstract
A composite pipe having at least one metal end piece (2, 3) with a free end and a non-metal tubular component (10). The tubular component (10) is coupled to the at least one end piece (2, 3) opposite of the free end of the end piece (2, 3), by means of at least one peripherally extending, axially acting groove (6, 7) that the non-metallic tubular component (10) engages. The non-metallic tubular component (10) generally comprises axial fibres (11) extending down into the at least one groove (6, 7). The groove (6, 7) has a bottom (13) and a flank (14), which flank is located furthest away from the free end of the end piece (2, 3). Between the flank (14) and the axial fibres (11) there is provided an intermediate layer (15). Also described is a method of manufacturing such a composite pipe.
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Citations
20 Claims
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1-10. -10. (canceled)
- 11. A composite pipe having at least one metal end piece with a free end and a non-metallic tubular component, wherein the tubular component is coupled to the at least one end piece opposite of the free end of the end piece, by means of at least one peripherally extending, axially acting groove which the non-metallic tubular component engages, the non-metallic tubular component comprising generally axial directed fibres extending down into the at least one groove, which groove has a bottom and a flank, and which flank is located furthest away from the free end of the end piece, characterized in that an intermediate layer is provided between the flank and the axial fibres, having a thickness that clears the axial fibres away from one or several areas near the flank which, when the pipe is placed under tension, are subject to particularly high stress concentrations, and that the intermediate layer has a thickness of at least 2 mm.
- 17. A method of manufacturing a composite pipe having at least one metal end piece with a free end and a non-metallic tubular component, where the tubular component is coupled to the at least one end piece opposite the free end of the end piece, by means of at least one peripherally extending, axially acting groove that the non-metallic tubular component engages, which groove has a bottom and a flank, and which flank is located furthest away from the free end of the end piece, characterized in that an intermediate layer is applied at the flank, having a thickness that clears the axial fibres away from one or several areas near the flank which, when the pipe is placed under tension, are subject to particularly high stress concentrations, the intermediate layer having a thickness of at least 2 mm, that axial fibres are subsequently laid along the bottom of the groove and along the intermediate layer, and that fibres are then wound on the outside of the axial fibres in the peripheral direction of the pipe.
Specification