Cleaning of heat distribution tubes by electrohydraulic method from solid waste

Abstract

The article is devoted to the method of cleaning the deposits of tubes and tube bundles forming on the inner surfaces with long-term use of heat exchangers. Due to the fact that solid scale significantly reduces the efficiency of the heat exchange process, the methods of their purification were considered. Various types of equipment are used to solve the problems of descaling tubes. All of them have their own characteristics and limitations depending on their application. In our experience, we have seen that there is no single way to solve all the emerging production tasks for cleaning heat exchange equipment. With the consistent application
of each type of equipment for cleaning devices and pipelines, it is possible to solve the tasks. One of the new methods of solid waste treatment on heat exchange surfaces is electrohydraulic method. During the development of the electrohydraulic installation, the main attention was paid to the possibility of cleaning pipelines from scale of high strength. Also an important criterion for the creation of this equipment was: the compactness of the installation, the safety of technology, the minimum use of consumables. The parameters were proposed when cleaning the flat tube by electrohydraulic method. The results of the practice are of interest from a scientific and practical point of view. With long-term and continuous operation, the optimal parameters of copper with isolated polyethylene insulation are selected, due to the reduction of the working electrode and its insulation. The uniqueness of the electrohydraulic installation is that it is able to clean solid waste of high strength, and in some cases allows to clean silted tubes completely .