Method for coating the inside of pipes and coating system

A coating system to coat the inside of pipes (1) and similar longitudinally stretched hollow objects in the form of a vehicle with a distributor which can travel lengthwise through a pipe whereas the components of the coating agent are separated up to the distributor in a common section of piping, are then intensively mixed and as a mixture applied onto the inner walls of the pipe in travel direction behind the vehicle, the vehicle is designed with space holders that compensate irregularities of the inner wall of the pipe and that can be adjusted to fit the individual diameter of the inner wall of the pipe and that it can be moved forwards and backwards inside the pipe to correct mistakes whereas the pulling section of piping is always kept tight and at the points where it changes the direction it is guided by rollers that secure the predetermined angle of redirection and it is also guided during the rolling on and off process of the spool and thus always remains connected with the coating agent storage container, which is equipped with a vehicle (3) that is guided along the inner wall (26) of the pipe (1) by a drive and which features a distributor (19) for the coating agent, the vehicle (3) is connected with at least one coating agent storage container (8) via a flexible section of piping (4) whereas the section of piping (4) is connected with a spool (7) positioned outside the pipe (1)

• characterized by the fact
• that the spool (7) features a drive (47) and a central, pipe-shaped spool axis (49) whose at least one free end is equipped with a sealed pivotal connector (52, 53) at whose solid part at least one feed line (54) from a coating agent supply container (8) comes it and whose part that is connected with the pivotal part of the spool (7) is connected to one of the product lines (21, 22) in the section of piping (4) which in turn forms the tensile section of piping (4) together with if necessary additional for the operation of the vehicle required supply lines, the section of piping (4) can be rolled onto the spool (7), the vehicle (3) then also features a camera car (142) and a rope (9, 144) on the side where the rotating distributor (19) is located, wherein the section of piping (4) consists of the two separate product lines (21, 22) which can be heated and two partial shells (98, 100) and a middle piece (99) which features channels (101, 102) or partial channels (103, 104, 105) for the product lines (21, 22) and additional support lines (106).