LINING OF PIPELINE LAID ON WATER BOTTOM

摘要

PURPOSE:To obtain a method for lining of the inner surface of a pipeline laid on the water bottom such as sea water by turning out the inside of an inner lining material at a folded-back part formed on a circular fixed part by water pressure and by discharging water in the pipeline from another end of the pipeline at the same time. CONSTITUTION:Water is poured into a water tower 8 form a water supplying nozzle 9. The water reaches the back part of the circular fixed part of a lining material 10 and applies a water pressure corresponding to the water height in the water tower 8 and the lining material 10 is thereby pushed forward to form a folded-back part 17. While the water is pouring into the water tower 8, the folded-back part 17 advances forward in an oil pipeline 7 laid in the sea bottom. The lining material 10 is accordingly pulled out from a reel 11 and the inner surface is passed through a part where an adhesive is sealed to be coated with the adhesive 12, while the coated amt. of which is adjusted by means of nip rollers 14. The lining material 10 then reaches the folded-back part 17 through itself having been already turned out and is there turned inside out and to be adhered under pressure on the inner surface of the oil pipeline 7 on the sea bottom.