| 摘要 |
A pair of dual-skin pipes 10, 12, each pipe comprising a casing 20, 22 and a sleeve 30, 32, are coupled by abutting free ends 34, 36 of sleeves 30, 32, connecting casings 20, 22 to form a sealed void (80, Figure 3) and injecting sealant, for example a resin, into the void, which may be plugged using a plug (98, Figure 4). End 36 of sleeve 32 preferably projects from casing 22. Preferably, casing 22 ends in a collar 50, which is sealed to casing 20 using a sealing ring 62. Collar 50 may comprise a sealing lip 56 that deflects axially to bear against casing 20. Sleeves 30, 32 may be comprised of a material inert to hydrogen sulphide, preferably glass reinforced plastic or carbon fibre, while casings 20, 22 may be comprised of stainless steel. |
