Method for assembling an end-piece of a flexible pipe and assocated pre-assembly

Patent metadata

Field	Value
Publication number	US-2016016708-A1
Application number	US-201414772906-A
Country	US
Kind code	A1
Filing date	Mar 6, 2014
Priority date	Mar 7, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

A method comprises including the following steps: placing a rear locking collar ( 62 ) around an outer ply ( 25 ), placing a first shaping guide ( 82 ) for shaping the folding of the end segments ( 32 ) of the outer ply ( 25 ); folding the end segments ( 32 ) of the outer ply ( 25 ) rearwards, folding the end segments ( 32 ) of an inner ply ( 24 ) rearwards.
Before the step for folding the end segments ( 32 ) of the inner ply ( 24 ) rearwards, a second shaping guide ( 84 ) is placed for shaping the folding of the end segments ( 32 ) of the inner ply ( 24 ), a second shaping guide ( 84 ) being separate from the first shaping guide ( 82 ), the end segments ( 32 ) of the inner ply ( 24 ) bearing on the second shaping guide ( 84 ) after the folding step.

First claim

1 . A method for assembling an end-piece of a flexible pipe, the flexible pipe including an inner tubular structure having a central axis, an inner ply of tensile armors positioned around the inner tubular structure and an outer ply of tensile armors positioned around the inner ply, the method comprising the following steps:
placing a rear locking collar of the armor plies around the outer ply; placing a first shaping guide for shaping the folding of the end segments of the outer ply; folding the end segments of the outer ply rearwards while forming a bend in front of the locking collar, the end segments of the outer ply pressing on the first guide; folding the end segments of the inner ply rearwards; the method including, before the step for folding the end segments of the inner ply rearwards, placing a second shaping guide for shaping the folding of the end segments of the inner ply, the second shaping guide being separate from the first shaping guide, the end segments of the inner ply bearing on the second shaping guide after the folding step, the method including, after the folding steps, the following steps: inserting a front sealing assembly around the inner tubular structure; placing a vault of the end-piece in the end of the inner tubular structure; folding the end segments of the inner ply forward to place them around the vault; removing the second shaping guide; folding the end segments of the outer ply forward to place them outwardly at the end segments of the inner ply; removing the first shaping guide; and fastening an outer cover of the end-piece on the vault, the vault and the outer cover delimiting a chamber -between them for receiving the end segments of the inner ply and the outer ply.

2 . The method according to claim 1 , wherein after the folding steps, the end segments of the outer ply separate from the inner ply in a first axial position along the central axis, the end segments of the inner ply separating from the inner tubular structure in a second axial position, axially offset from the first axial position.

3 . The method according to claim 1 , wherein the step for placing the second shaping guide is carried out after the rearward folding of the end segments of the outer ply around the first shaping guide, and before the rearward folding of the end segments toward the inner ply.

4 . The method according to claim 3 , wherein the second shaping guide is positioned in front of the bend formed by the end segments of the outer ply during its placement.

5 . The method according to claim 3 , wherein the placement of the second shaping guide includes the arrangement, around the inner ply, of a front locking collar of the inner ply, the second shaping guide being placed on the front locking collar.

6 . The method according to claim 3 , including, after the folding of the end segments of the outer ply, and before the placement of the second shaping guide, cutting an anti-wear strip positioned between the inner ply and the outer ply.

7 . The method according to claim 1 , including a step for removing the front collar, after having removed the second shaping guide and before folding the end segments of the inner ply forward to place them around the vault.

8 . The method according to claim 1 , including a second step for removing the rear collar, after having removed the first shaping guide and before folding the end segments of the inner ply forward to place them outside the end segments of the inner ply.

9 . The method according to claim 1 , including inserting a filler material able to solidify in the receiving chamber.

10 . The method according to claim 1 , wherein the first guide and the second guide each have a convex front surface, with the convex side oriented forward, the respective end segments of the outer ply and the inner ply each bearing on a respective front surface of the first guide and the second guide.

11 . A pre-assembly of a flexible pipe end-piece, the flexible pipe including an inner tubular structure having a central axis, an inner ply of tensile armors positioned around the inner tubular structure and an outer ply of tensile armors positioned around the inner structure,
the pre-assembly including:
a rear locking collar of the armor plies placed around the outer ply;
a first shaping guide for the folding of the end segments of the outer ply, the end segments of the outer ply bearing on the first guide while forming a bend in front of the rear locking collar;
a second shaping guide for shaping the folding of the end segments of the inner ply, separate from the first shaping guide, the end segments of the inner ply bearing on the second guide while forming a bend in front of the rear locking collar, a front locking collar of the inner ply, the second shaping guide being placed on the front locking collar.

12 . A pre-assembly according to claim 11 , wherein the end segments of the outer ply separate from the inner ply in a first axial position along the central axis, the end segments of the inner ply separating from the inner tubular structure in a second axial position, axially offset from the first axial position.

13 . The pre-assembly according to claim 11 , including an anti-wear strip positioned between the inner ply and the outer ply, the anti-wear strip having a front edge situated between the first guide and the second guide.

14 . The pre-assembly according to claim 11 , wherein the first guide and the second guide each have a convex front surface, with the convex side oriented forward, the respective end segments of the outer ply and the inner ply each bearing on a respective front surface of the first guide and the second guide.

Assignees

• Technip France

Inventors

• Le Blan Benjamin
• Bruno German
• Peckeu Grégory
• Colmard Antoine

Classifications

• B65D59/06 Primary

  Caps · CPC title

• F16L33/01 Primary

  specially adapted for hoses having a multi-layer wall · CPC title