| 摘要 |
PCT No. PCT/GB96/01214 Sec. 371 Date Mar. 23, 1998 Sec. 102(e) Date Mar. 23, 1998 PCT Filed May 21, 1996 PCT Pub. No. WO96/37727 PCT Pub. Date Nov. 28, 1996An in-pipe vehicle for carrying out at least one operation in a pipeline. The vehicle includes a train of modules interlinked by suspension units to allow serpentine movement through pipe bends. The vehicle train has its own internal power supply and drive mechanism in the modules. A detector module determines the presence of a service junction using magnetic field information. A manipulative module allows the vehicle to be temporarily wedged in the pipeline while providing rotational movement to facilitate the desired operation at the junction. This may include drilling and welding of a service pipe to the main using appropriate modules. A remote probe typically containing a magnetic field generator can be used to assist in service junction location by the vehicle.
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