Method and Device for Regenerating the Interior Surfaces of Conduits by Means of Thermal Spraying of Metals

Method for regeneration of internal conduit surfaces by thermal projection of metals, comprising the steps of:

• inserting a device carrying a thermal projection system through a manhole in a conduit installation, said device including a vehicle having a rolling assembly to permit rolling of the vehicle, such that the step of inserting includes the steps of:
• inserting the device in a conduit with the rolling assembly in a retracted position, and
• expanding said rolling assembly inside the conduit until the device is centered in said conduit;
• inserting at least one of electrical, pneumatic and hydraulic conduits as well as at least one conduit for supplying metal to be thermally projected, through the manhole, such that the conduits are connected with the vehicle;
• positioning a regeneration device including said thermal projection system connected with the vehicle by a remote-control pulling system in a particular position to be regenerated;
• thermally projecting metal from the regeneration device;
• advancing said vehicle and connected regeneration device to a new regeneration position.