公开(公告)号：US09791091B2

公开(公告)日：2017-10-17

申请号：US14954545

申请日：2015-11-30

Applicant: Shawcor, Ltd.

Inventor： Masahide Yodogawa ,  Suresh Choudhary ,  Jan Peder Hegdal ,  Torgeir Sletvold ,  Eileen Wan

IPC: F16L9/14 ,  F16L59/02 ,  B23K31/02 ,  B23K37/00 ,  F16L58/10 ,  F16L59/14 ,  F16L58/18 ,  F16L59/20 ,  F16L13/02 ,  B29C39/10 ,  B29C33/00 ,  F16L1/16 ,  F16L9/02 ,  F16L9/22

CPC classification number: F16L59/029 ,  B23K31/02 ,  B23K31/027 ,  B23K37/00 ,  B29C33/0011 ,  B29C39/10 ,  F16L1/161 ,  F16L9/02 ,  F16L9/22 ,  F16L13/0272 ,  F16L58/1054 ,  F16L58/1081 ,  F16L58/181 ,  F16L59/14 ,  F16L59/143 ,  F16L59/20

Abstract: A method for forming a high temperature field joint between two insulated pipe sections, and an insulated conduit having a low temperature field joint. The conduit comprises a steel pipe with a corrosion protection coating and a pipe insulation layer comprising a polymer composition having thermal conductivity of less than about 0.40 W/mk, and/or heat resistance to continuous operating temperatures from about 150° C. to above about 205° C. After a circumferential weld joint is formed between the two pipes, a first field joint insulation layer is applied over the joint area, the first field joint insulation layer comprises a polymer composition having heat resistance to continuous operating temperatures from about 150° C. to above about 205° C.

公开(公告)号：US10161556B2

公开(公告)日：2018-12-25

申请号：US14870602

申请日：2015-09-30

Applicant: SHAWCOR LTD.

Inventor： Eileen Wan ,  Adam Jackson ,  Eirik Simonsen ,  Masahide Yodogawa

IPC: F16L59/14 ,  F16L1/16 ,  F16L59/02 ,  B23K31/02 ,  B23K37/00 ,  F16L58/10 ,  F16L58/18 ,  F16L59/20 ,  F16L13/02 ,  B29C39/10 ,  B29C33/00 ,  F16L9/02 ,  F16L9/22

Abstract: An insulated high-temperature transport conduit for use in undersea environments. The conduit comprises a continuous steel pipe having at least a first layer of thermal insulation provided over its outer surface. The first layer of thermal insulation comprises a polymer composition having a thermal conductivity of less than about 0.40 W/mK and long-term heat resistance at continuous operating temperatures within the range from about 150° C. to above about 205° C. The first thermal insulation layer comprises a polymer composition comprising a polymer selected from the group consisting of one or more fluoropolymers, hydrogenated nitrile butadiene rubber (HNBR), and a blend of one or more fluoropolymers with HNBR. The conduit may further comprise second and third layers of insulation on top of the first layer, along with a corrosion protection coating underlying the first thermal insulation layer.