Manufacturing process of finned tube air cooler and finned tube air cooler

Abstract

The invention provides a finned tube type air cooler manufacturing process and a finned tube type air cooler manufactured through the process, and relates to the technical field of petrochemical and coal chemical plants. According to the finned tube type air cooler manufacturing process, a finned tube and a tube plate are assembled, a tube head of the finned tube and the tube plate are welded together through a chamfering welding method, tube box welding is carried out, in the tube box welding process, step-by-step heat treatment is carried out, and the finned tube type air cooler is obtained.Compared with an existing preparing process that a tube box is welded firstly, and deep hole welding is used for welding the tube head of the finned tube and the tube plate of the tube box, the manufacturing process has the beneficial effect that the problem that deep hole welding cannot ensure that the tube end welding line has the enough section thickness, and many non-normal corrosion leakageaccidents appear in the tube head welding line portion is effectively solved.

Description

technical field [0001] The invention relates to the technical field of petrochemical and coal chemical plants, in particular to a manufacturing process of a finned tube air cooler and the manufactured finned tube air cooler. Background technique [0002] Finned tube air coolers are conventional equipment in petrochemical and coal chemical plants. They are generally composed of tube bundles, tube boxes, fans, louvers and frames. The welding of finned tubes and tube plates and the welding of tube boxes The subsequent heat treatment of the tube and box is the key to the reliable operation of the finned tube air cooler. [0003] At present, the manufacturing process of the existing finned tube air cooler is to weld the tube box first, and then put the welded tube box into the annealing furnace for annealing heat treatment, and then use the welding method of deep hole welding to weld the tube head and the tube bundle. The tube sheets of the tube box are welded together. The abo...

AI Technical Summary

Problems solved by technology

Compared with the existing preparation process of welding the tube box first, and then welding the tube head of the finned tube and the tube plate of the tube box by deep hole welding, this manufacturing process effectively alleviates the difficulty of deep hole welding. Ensure that the pipe end welds have sufficient section thickness, resulting in many leakage accidents caused by abnormal corrosion at the pipe head welds

[0008] The second object of the present invention is to provide a finned tube air cooler. Both the tube head and the tube box of the finned tube air cooler have high welding quality, which effectively alleviates the failure of deep hole welding to ensure the weld seam of the tube end. With sufficient section thickness, there are many problems of leakage accidents caused by abnormal corrosion at the welding seam of the pipe head, thus effectively ensuring the safety of use and operation of the high-pressure air cooler

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