Regarding the heater leak

This post was last edited by sinoeng on 2023-11-19 at 12:48. Such conditions are likely caused by factors such as local overheating or thermal stress, steam quality, scaling, and chemical corrosion. The posts on the forum are somewhat enlightening: https://bbs.hcbbs.com/thread-3353400-1-1.html

The common causes of leaks in the tube bundle of a tubular heater are as follows: 1. Material defects: Quality issues with the tubes themselves, such as impurities, microcracks, or corrosion, can all lead to leaks during their use. 2. Corrosion: The corrosive nature of the medium causes the pipe wall to thin gradually, eventually leading to perforation. Steam may contain certain chemical components, such as oxygen or other substances, which can accelerate the corrosion of pipes. Asphalt can produce compounds that are somewhat corrosive to metals at high temperatures. 3. Thermal expansion and thermal stress: The thermal expansion and contraction of the tube bundle during heating and cooling can lead to thermal stress, and repeated exposure to such stress over time can cause fatigue and cracking in the tubes. 4. Scaling and blockage: Deposits inside the pipes (such as scale and asphalt residues) can cause localized overheating, leading to damage to the pipe walls and leaks. Furthermore, scaling can also lead to a decrease in heat transfer efficiency, increasing energy consumption. 5. Design or installation issues: If the heater is poorly designed or installed incorrectly, it may cause excessive stress on the tube bundle, leading to leaks at the pipe connections or in the pipes themselves. 6. Mechanical damage: During transportation, installation, or maintenance, accidental collisions or improper handling may cause mechanical damage to the tube bundle, leading to leaks. 7. Overload operation: If the heater operates above its designed pressure or temperature limits, it may cause the pipes to crack and leak due to being overloaded. 8. Poor pipe joints and seals: Poor welding quality at pipe joints, or aging and damage to seals, can all lead to leaks. To resolve leaks in the heater tube bundle, it is necessary to accurately diagnose the cause of the leak and then take appropriate repair or replacement actions. At the same time, the design, operation, and maintenance strategies of the heater should be reviewed and optimized to prevent leaks from occurring in the future. .