Analysis of the reasons for the expansion and bursting of heat exchange tubes

1. The bulging and shrinking phenomenon of heat exchange tubes

The bulging and shrinking of heat exchange tubes refers to the phenomenon where the tubes appear to expand and contract, and this causes excessive stress on exposed devices, piping, and other auxiliary equipment, resulting in many serious problems such as water leakage, rupture, and confidential leakage.

2. Causes of the bulging and shrinking of heat exchange tubes

1. Inadequate design

When the tube wall is too thin or the length of the tube is too long, bulging and shrinking phenomena are likely to occur during use. Additionally, if a new type of heat exchanger that has not been fully tested is used, bulging and shrinking phenomena may occur during use.

2. Operating conditions

The temperature and pressure at which the heat exchange tubes are used are the main causes of bulging. Generally, when the temperature and pressure exceed the rated values, the heat exchange tubes will bulge. In addition, if the heat exchange tubes are over-fixed or placed improperly, bulging may occur.

3. Operating environment

The operating environment is also one of the reasons for the bulging of heat exchange tubes. If the heat exchanger is located in an environment with corrosive media, such as chloride ions, they will inevitably cause corrosion and damage to the tube wall, leading to bulging.

3. How to prevent the bulging and shrinking phenomenon of heat exchange tubes

1. Correct design

To prevent the bulging and shrinking phenomenon, it is best to select tubes with sufficient wall thickness and appropriate length, and test new heat exchangers to minimize the possibility of problems.

2. Reasonable use and management

When using heat exchangers, operations must be carried out according to the specified temperature, pressure, and flow rate. In addition, proper installation to ensure that the connection between the heat exchanger and other equipment is not affected by excessive stress can reduce the occurrence of bulging.

3. Correct maintenance

Regularly inspect the heat exchanger, especially the corrosion stress caused by long-term use, changes in operating conditions, etc. If necessary, the heat exchanger should be replaced in time and managed with anti-corrosion measures.

4. Summary

The bulging of heat exchangers is a common problem caused by improper equipment design, operation, or maintenance. We can take certain preventive measures to prevent this phenomenon. These measures include reasonable design, reasonable use and management, and regular maintenance. This can reduce the losses and impacts caused by the bulging of heat exchangers.

The difference between the advantages and disadvantages of welded pipes.