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Tubular body comprising two or more layers of helically bended strips

A tubular body and tubular technology, which is applied in the field of tubular bodies to achieve the effect of saving material weight and reducing stress corrosion

Inactive Publication Date: 2010-03-24
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prebending results in a helical shape

Method used

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  • Tubular body comprising two or more layers of helically bended strips
  • Tubular body comprising two or more layers of helically bended strips
  • Tubular body comprising two or more layers of helically bended strips

Examples

Experimental program
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Embodiment Construction

[0039] refer to figure 1 , 2 and 3, show a tubular body 1 comprising two superimposed elongated metal strips 2 and 3 which are helically wound around an inner sleeve 4 which 4 around the hollow core 5. Each layer consists of a metal strip. The overlap between the metal strips in these two layers is 50%. Strips 2 and 3 are made of high strength steel. The strip 3 is wound helically around the inner sleeve 4 . Strip 2 is helically wound around strip 3 in a pattern overlapping by 50%. Between the inner sleeve 4 and the strip 3 and between the strip 3 and the strip 2 there is a thin layer of adhesive. Around the outer metal strip 2 there is a thin layer of protective cladding. Figure 4 An elongated metal strip 3 is shown. In the method according to the invention, the metal strip is helically bent around lines perpendicular to line l (for example l', l" and l"'). It is evident that during the bending process the wire around which the metal strip is bent will move continu...

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PUM

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Abstract

The invention concerns an elongated, multilayered tubular body (1) comprising an elongated, tubular inner hollow core (5), an elongated, tubular inner casing (4) and an elongated, tubular outer casing, the inner casing surrounding the hollow core, the outer casing surrounding the inner casing, the outer casing comprising at least two layers (2,3), each layer consisting of one or more longitudinally preformed, flat elongated metal strips, the preforming of the strips such that the strips have been bent helically in such,a way that the consecutive windings of the helix touch or almost touch to each other, each strip in one layer overlapping with other strips in other layers, the layers in the outer casing being bound to each other by an adhesive. The invention further concerns the use of theelongated tubular bodies in the transport of hydrocarbons as oil and / or natural gas optionally containing hydrogen sulphide and / or carbon dioxide or for the transport of gasses and / or liquids as carbon dioxide, hydrogen, water or steam.

Description

technical field [0001] The present invention relates to novel tubular bodies. More particularly, the present invention relates to an elongate multilayer tubular body comprising an elongate tubular inner hollow core, an optional elongate tubular inner sleeve and an elongate tubular outer sheath A tube, an inner sleeve surrounding the hollow core, and an outer sleeve surrounding the inner sleeve, the outer sleeve comprising at least two layers of flat metal strip preformed in the longitudinal direction. The preforming of the metal strips includes in particular bending the strips such that each metal strip becomes a helix by plastic deformation. The preformed metal strip can be made, for example, of high-strength steel, in particular steel whose material has a large proportion in the martensitic phase. Preferably, there is an elongated tubular inner sleeve. The inner sleeve may eg be made of a corrosion resistant material. Such a tubular body has the advantage that by using h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/16
CPCF16L9/165
Inventor R·N·伯克R·范沙尔克维克R·J·A·史密斯N·J·维内罗
Owner SHELL INT RES MAATSCHAPPIJ BV
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