Titanium-steel composite adapter tube and equipment for adopting titanium-steel composite adapter tube

Abstract

The invention relates to a titanium-steel composite adapter tube, and further relates to equipment for adopting the composite adapter tube. The composite adapter tube comprises a steel adapter tube body, a titanium bushing and a titanium bowl-shaped angle joint ring, wherein the bushing is sleeved in an adapter tube body, the bowl-shaped angle joint ring comprises an angle joint ring tube part, which is laminated with an inner wall of the adapter tube body, and an angle joint ring loop part, which is laminated with an end face of the bottom end of the adapter tube body; the composite adapter tube is adopted by the equipment, the bottom end of the composite adapter tube is welded on a hole wall of an adapter tube hole of an equipment body, the angle joint ring loop part of the bowl-shaped angle joint ring stretches to an inner side of an inner wall of the equipment body around the adapter tube hole and is laminated with the inner wall of the equipment body. The titanium-steel compositeadapter tube can be used for reducing or eliminating a phenomenon that the stress at a welding position between an adapter tube titanium bushing and a titanium backing ring of the equipment body is excessively concentrated, the cracks of welding seams are reduced or avoided, and the titanium-steel composite adapter tube can be widely applied to titanium-steel composite board petrochemical equipment with an external adapter tube and a flange.

Description

technical field [0001] The invention relates to a titanium-steel composite connecting pipe, and also relates to a device using the titanium-steel composite connecting pipe, which belongs to the technical field of petrochemical equipment. Background technique [0002] Due to the characteristics of the medium, titanium-steel composite plate equipment is often used in the field of petrochemical equipment. In order to meet the process requirements and the needs of manufacturing, installation and maintenance, titanium-steel composite equipment needs to be equipped with connecting pipes and flanges. In these equipment, due to the welding characteristics of the titanium-steel composite plate equipment itself, a welding method different from that of pure steel structures should be adopted. [0003] The titanium-steel composite joint mainly includes the main body of the joint and the sleeve sleeved in the main body of the joint. The main body of the joint is made of steel, and the sl...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the welding joint between the titanium liner and the titanium backing ring inside the equipment body is a fillet weld, there is a large structural mutation here, so there is a large stress concentration. The higher the temperature and pressure, the weld here more likely to crack;

[0005] 2. The silver brazing around the sealed titanium plate is cracked. Since the silver brazing itself only plays a sealing role, it cannot bear stress such as stretching and bending. However, the pre-tightening force of the steel flange and the stress of the pipeline force and temperature difference during operation Under such action, the sealing surface is easy to crack;

[0006] 3. The sealing surface is easily damaged. During the installation of equipment, the sealing titanium plates of the existing structure are generally thin, and the weld seam is weak and bears bending and shearing stress, especially when entering and exiting the manhole, or when the nozzle is connected to the agitator. Vulnerable

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