| 摘要 |
The invention relates to a method for loosening and fragmenting scale ( 2 ) from the inside of particularly long and/or bent pipelines with pipe ( 1 ), characterized in that:-a line/cable ( 4 ) is blown through the pipe ( 1 ) with a gas flow ( 3 ) under pressure, in that the friction between the gas flow ( 3 ) and the length of the line/cable ( 4 ) results in a rapid transport of the line/cable ( 4 ) through the pipe ( 1 ),-a nozzle head ( 6 ) connected to a hose ( 7 ) for supplying water under high pressure is attached to the outer end of the line/cable ( 4 ),-the line cable ( 4 ) is pulled back while the water spouting from the nozzle head under pressure, forming at least a water jet ( 8 ), cuts up and crushes the scale ( 2 ) into fragments ( 2 '), said fragments ( 2 ') then being fluidised in the gas flow ( 3 ), where the water jet ( 8 ) after purging forms an aerosol fog which is mixed in with the gas flow ( 3 ) forming a three-phase regime,-the supplied gas is transported out through the pipe ( 1 ).
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