Patent ID: 8561569
Filing Date: 2013-10-22
Classification: B05B,B05D,F16L

Abstract:
1. A process for coating the inner walls of pipes, comprising the steps of: arranging a combined mobile heating and cooling device around or inside a pipe, the combined mobile heating and cooling device including a heating region configured to heat the pipe locally, a first cooling region arranged on a first side of the heating region and configured to cool the pipe locally, and a second cooling region arranged on a second side of the heating region opposite the first side and configured to cool the pipe locally, feeding a fluid containing a coating material into the pipe, and moving the combined mobile heating and cooling device in a first direction along the pipe in which the first cooling region trails the heating region to heat the pipe locally using the heating region to a temperature required to form a first coating until the layer formation process is completed locally, and to cool the locally heated pipe using the first cooling region that trails the heating region, and moving the combined mobile heating and cooling device along the pipe in a second direction opposite the first direction and in which the second cooling region trails the heating region to heat the pipe locally using the heating region to the temperature required to form a second coating until the layer formation process is completed locally, and to cool the locally heated pipe using the second cooling region that trails the heating region.