Subsea insulated pipeline with pre-cured syntactic elements and methods of manufacture,申请号US20030337468-传众专利搜索

Subsea insulated pipeline with pre-cured syntactic elements and methods of manufacture

申请公布号：US6827110(B2)

申请号：US20030337468

申请日期：2003.01.07

申请公布日期：2004.12.07

申请人：

CUMING CORPORATION

发明人：WATKINS LOU W.

分类号：F16L59/14;(IPC1-7):F16L9/14

主分类号：F16L59/14

摘要：An insulated pipeline comprises an inner pipe, and an outer poly sleeve co-axial with the inner pipe. The inner pipe and the outer poly sleeve are in spaced relationship to define an annulus. An insulating core within the annulus encases lengthwise the inner pipe, and comprises a plurality of pre-cured syntactic elements. A first binder fills interstices in the annulus. The pre-cured syntactic elements include microspheres and a second binder. Each of the pre-cured syntactic elements may also include macrospheres. The pre-cured syntactic elements preferably extruded and cylindrically shaped. In addition, in one embodiment, the second binder is preferably more rigid than the first binder.