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    • 3. 发明申请
    • IMPROVED SPACER
    • 改进间隔
    • WO2007057695A1
    • 2007-05-24
    • PCT/GB2006/004311
    • 2006-11-20
    • NYLACAST LIMITEDBRADFIELD, HowardMAHOMED, Mussa
    • BRADFIELD, HowardMAHOMED, Mussa
    • F16L9/19
    • F16L7/00
    • A pipe in pipe spacer (10) for use in coaxial spacing a first pipe within a second pipe, for example, an oil pipe within a carrier pipe. The spacer (10) has an inner face (2) which contacts and engages with the outer surface of the first pipe and an outer surface (3) which contacts the carrier pipe. The inside face (2) of the pipe in pipe spacer (10) is coated with a coating (8) relatively of a soft deformable material, such as zinc, so that the coefficient of friction between the outer surface of the first pipe and the inside face of the pipe in pipe spacer is higher than the coefficient of friction between the outer surface of the first pipe and the inside face of the uncoated pipe in pipe spacer.
    • 管间隔件(10)中的管道,其用于同轴间隔第二管道内的第一管道,例如载体管道内的油管。 间隔件(10)具有与第一管的外表面接触并接合的内表面(2)和与承载管接触的外表面(3)。 管间隔件(10)中的管的内表面(2)涂覆有诸如锌的软的可变形材料相对的涂层(8),使得第一管的外表面与 管间隔件内管的内表面高于第一管的外表面和管间隔件中的未涂覆管的内表面之间的摩擦系数。