All-welded wide channel plate heat exchanger
All-welded wide channel plate heat exchanger is specially created for the special needs of customers. It is especially suitable for processing media containing a large number of solid particles, fiber suspensions and viscous fluid in the production processes of metallurgy, paper making, sugar making, alcohol, chemical engineering, sewage treatment and other industries.
1. Sheet forming
The plate size of welded wide channel plate heat exchanger is large, the maximum length is more than 10000mm, and the width is 1,200 mm. By adopting the technology of continuous compression molding of the whole plate in sections, a plate is divided into several parts, which are pressed step by step on a 10,000-ton oil press, and finally the whole plate is molded. The length and structural dimensions of each section of the pressed plate are completely consistent. This forming method is developed on the basis of the traditional plate forming technology of plate heat exchanger, which ensures the assembly and welding quality of plate pairs.
2. Plate inspection
In order to ensure the manufacturing quality of plate, referring to the national standard of plate heat exchanger, and according to the special requirements of all-welded wide channel plate heat exchanger, the plate inspection specification is specially formulated.
3. Welding method
The welding between plate-distance column-plate adopts laser welding method, and the weld trajectory is circular and the weld width is narrow. Then, seam welding is adopted to weld the longitudinal long welds on both sides of the plate, and automatic argon arc welding is adopted to weld the outer welds at the ends.
The world's leading laser welding technology ensures the superb quality of the equipment, fully adapts to the harsh working conditions of various temperatures and pressures, and does not cause quality problems such as shutdown and leakage.
In order to ensure the absolute safety of welding quality, after the welding is completed, nondestructive testing and hydraulic pressure test are carried out to verify the feasibility of welding process and design and calculation strength.
4. After the welding of each plate pair is completed, the airtight test of 0.6-0.7MPa should be conducted to ensure the tightness of the single plate pair.
Advanced processing technology has achieved the quality of products, and excellent quality will make the equipment better serve the customers' process system safely for a long time.