Spiral plate heat exchanger is a new type of heat exchanger with good heat transfer efficiency and high operating stability. It can work with multiple units. The heat transfer element is a heat exchanger consisting of spiral plates. Spiral plate heat exchanger is a high-efficiency heat exchanger equipment suitable for steam-steam, steam-liquid, liquid-liquid, heat transfer to liquid. It is suitable for chemical, petroleum, solvent, food, light industry, textile, metallurgy, steel rolling, coking and other industries. According to the structure, it can be divided into non-detachable (type I) spiral plate type and detachable (type II, type III) spiral plate heat exchanger. How to solve the fault situation of spiral plate heat exchanger?
(1) In the production process, due to the erosion of the tube sheet of the spiral tube plate heat exchanger by moisture, cavitation and corrosion of trace chemical media, leakage often occurs at the tube sheet welds. As a result, water and chemical materials are mixed, and the production process temperature is difficult to control, resulting in the production of other products, which seriously affects product quality and reduces product grade.
(2) After the weld of the condenser tube sheet leaks, the company usually repairs it with traditional repair welding methods. The internal stress of the tube sheet is prone to be generated, and it is difficult to eliminate the internal stress of the tube sheet.
Through suppression, the company inspected the repair of the equipment, repeated welding and experiments. 2 to 4 people need several days to complete the repair. After several months of use, corrosion of the tube sheet welds again occurs, which will bring waste of manpower, material resources and financial resources to the enterprise, and increase production costs.