A shell-and-tube heat exchanger

By using a soft transition sleeve and radial boss structure in the shell-and-tube heat exchanger, the problem of friction and wear between the heat exchange tubes and the baffles is solved, extending the equipment life and improving efficiency, preventing leakage, and achieving effective protection and convenient installation.

CN224353640UActive Publication Date: 2026-06-12HIMILE MECHANICAL MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HIMILE MECHANICAL MFG
Filing Date
2025-05-12
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

During operation, shell-and-tube heat exchangers experience frictional wear between the heat exchange tubes and the baffle tube holes due to fluid flow or mechanical vibration in the shell side. This is especially detrimental to heat exchange tubes made of high-value special materials. Traditional solutions are costly and have limited effectiveness.

⚗Method used

A soft transition sleeve is used, with first and second radial bosses and notches. The transition sleeve, in conjunction with the heat exchange tube and baffle, reduces metal contact, prevents wear, and fills the gap after thermal expansion, thus improving installation convenience.

🎯Benefits of technology

It effectively isolates the heat exchange tubes from frictional damage to the baffles, extends equipment life, reduces leakage, improves heat exchange efficiency, and enhances the fixing effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a shell-and-tube heat exchanger, belonging to the field of heat exchange equipment. It includes a baffle plate and heat exchange tubes, the heat exchange tubes passing through a tube hole in the baffle plate. It also includes a transition sleeve fitted between the outer wall of the heat exchange tubes and the inner wall of the tube hole. A first radial boss is provided at the first end of the transition sleeve, the maximum outer diameter of which is larger than the inner diameter of the tube hole. A notch is provided along the axial direction of the transition sleeve on its sidewall. The transition sleeve is made of a soft material. This design effectively reduces friction between the heat exchange tubes and the baffle plate tube hole caused by fluid flow or mechanical vibration in the shell side of the heat exchanger, thus improving the service life of the equipment.
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