| 摘要 |
A fluid conduit 130 is lined with a heat-shrinkable, fluid-tight lining tube 110. This lining tube 110 may be heated then stretched to increase its length and reduce its cross-section, prior to inserting the lining tube 110 into the conduit 130. The lining tube 110 is then heated, for example by passing a heated fluid through the tube heating it to above 100 degree Celsius, so that its cross-section expands to contact, and thus line, the fluid conduit 130. The lining tube 110 may be formed on a mandrel and be formed from a cross-linked polymer, such as polyetheretherketone (PEEK), polytetrafluoroethylene (PTFE) or fluoroelastomer. The fluid conduit 130 may comprise an organic matrix compound. The lining tube 110 may be bonded to the fluid conduit 130 by melting the inner surface of the conduit, using the same heat source that heats and expands the lining tube 110. The lined fluid conduit 100 may be formed in a panel for use in a gas turbine engine dressing or raft. |
