| 摘要 |
INSULATED PIPE APPARATUS An insulated pipe apparatus including an inner conduit for carrying fluids wherein insulating material surrounds the inner conduit and extends substantially the length of said inner conduit. The insulating material is formed of a sheet of approximately trapezoidal sections defined by "V"-shaped grooves which when wrapped around the inner conduit form a circumferentially and longitudinally contiguous sleeve along the length of the inner conduit. A rigid outer casing resistant to mechanical stress and moisture ingress is disposed coaxial and coextensive with said inner conduit and surrounds the insulating material. Means defining a plurality of longitudinal elongated voids of substantially constant cross section and coextensive with said insulating material is disposed between the outer casing and the insulating material. Interconnecting means for interconnecting the elongated voids and sealing the ends of the insulating material are disposed between the outer surface of the inner conduit and the rigid outer casing.
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