LINING HOSE TO APPLY COATING ONTO INTERNAL PIPELINE SURFACE USING STEAM AS HEAT CARRIER Russian patent published in 2014 - IPC F16L58/04 

FIELD: machine building.

SUBSTANCE: lining hose comprises a reinforcing shell 2, a tubular thermoplastic shell 3 and a tubular inner film shell 4. The shell 2 is made of at least one layer of fibrous and/or woven material with its further impregnation by thermosetting binder. The shell 3 is inseparably connected to the inner surface of the shell 2 along its whole circumference. The shell 4 embraced by the shell 3 is made from heat resistant thermoplastic polymer materials and can be separated from the shell 3 after thermosetting of the shell 2 material. The shell 2 layer connected to the shell 3 is fitted by a fibreglass reinforcing layer 5. The radial distance T1 between the fibreglass reinforcing layer 5 and the shell 3 is less than the radial distance R1 between the fibreglass reinforcing layer 5 and the outer surface of this shell 2 layer.

EFFECT: improved quality of the applied coating, lower buckling and stretching of a thermoplastic shell and the lining hose reinforcing shell layer connected to it in the course of coating application.

9 cl, 3 dwg