Design and Experiment of Outer Wall Cleaning Machine for Convection Section

To solve the problems of energy waste and hidden danger caused by ash in the convection section of chemical equipment, a washing machine was designed with walking, guiding and over obstacle functions on the furnace tube. The washing machine was also designed to carry a spray bar and to be able spray high-pressure water, cleaning the outer wall of the furnace tube. The spray bar was arranged to be freely adjusted to achieve full cleaning the outer wall of multi-furnace tubes in different layers. According to the structure of the washing machine and the work process, a control system was designed for the washing machine. The dynamics simulation of the washing machine was carried out, and the design parameters of the washing machine were optimized. A test platform and the prototype were built. Experiment results show that, the cleaning machine can run smoothly, and the furnace tube cleaning operation can be realized with the installed high-pressure water jet.