| 摘要 |
The device (10) is a remotely thermally activatable device (10) for delivering a payload (12) to a predetermined location within a pipe. It comprises a carrier (14) for supporting the payload (12), a driver arrangement (16) to move the carrier (14) axially of the pipe, and a thermally activatable trigger (20) connected to the driver arrangement (16) for actuation thereof. In operation, the device (10) and payload (12) are placed within a pipe, for example near the end of a pipe (36) to be welded to an adjoining pipe (38). Subsequently to welding of the pipes (36,38), the device (10) is actuated by outside heating of the pipeline in the vicinity of the device (10), thereby causing the device (10) to move the payload 12 to the area of the weld. |
