| 摘要 |
The process involves using a largely spherical cleaner (1) which is connected via a supply conduit (2) with a souce of pressure medium, and which exhibits a nozzle opening in the form of a largely continuous annular gap (6). This extends along the periphery of the cleaner (1) and is connected to the supply conduit (2) and the source of pressure medium. - The medium is made to discharge through the annular gap (6) in order partly to clean inner walls of the line, and partly, as a result of the forces of reaction from the discharging medium, to make the cleaner (1) move into the pipeline. The cleaner (1) is brought into contact with an inner wall of the line. A reduced pressure is established between the cleaner (1) and the inner wall and it is made to move around about the cross-section of the line by twisting of the supply conduit.
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