AN ASSEMBLY OF AN END-FITTING AND AN UNBONDED FLEXIBLE PIPE

WIPO Patent Application WO/2019/137591

A1

The present invention relates to an assembly of an end-fitting and an unbonded flexible pipe, where the unbonded flexible pipe comprises from the inside and out an internal pressure sheath, at least one armor layer and an outer sheath, the end-fitting further comprises sealing means. The sealing means comprises a seal casing (30) concentrically arranged around the internal pressure sheath (11), the seal casing (30) comprises a recess (31) in which a first sealing element (41) is concentrically arranged around the internal pressure sheath (11) such that the surface of the first sealing element (41) at least forms a line contact with the internal pressure sheath (11), and a second sealing element (42) is concentrically arranged around the internal pressure sheath (11) in said recess (31) such that the surface of the second sealing element (42) at least form a line contact with the surface of the seal casing (30) and form a line contact with the surface of the first sealing element (41) and wherein the Shore D hardness of the first sealing element (41) is in the range of 40 to 70 when measured according to ASTM 2240; and the Shore A hardness of the second sealing element (42) is in the range of 80 IRHD to 100 IRHD when measured according to ISO 48N.

RIES JESPER (DK)
HALSTEEN MARTIN (DK)
ROBOCK LARS (DK)
BØGELUND BO (DK)

PCT/DK2019/050009

July 18, 2019

January 10, 2019

Click for automatic bibliography generation  

NAT OILWELL VARCO DENMARK IS (DK)

F16L33/01; F16L33/00

WO1999019656A1	1999-04-22
WO2017140321A1	2017-08-24

US20040036280A1	2004-02-26
FR2210269A5	1974-07-05
US6019137A	2000-02-01
US5720503A	1998-02-24
US20040036280A1	2004-02-26
EP3040593A1	2016-07-06

See also references of EP 3737884A4

HEGNER & PARTNERS A/S (DK)

View/Download PDF      PDF Help

Previous Patent: A METHOD FOR CONTROLLING A WIND ENERGY FARM TAKING WAKE EFFECTS INTO ACCOUNT

Next Patent: AN OPEN TOP PORTABLE PISSOIR UNIT