Repairing Leaky Heat Exchange Tubes
What are the situations leading to heat exchanger leakage?
Heat exchanger leakage occurs due to cracks and perforations caused by corrosion, wear, scouring, assembly strain, tube defects, or significant wall thickness deviations.
How to repair leaking heat exchange tubes?
1. Tube leakage at the nozzle is generally repairable, but internal tube sheet repair is not feasible.
2. If the number of leaking pipes is limited and blocked pipes suffice for production needs, conical metal plugging heads can be used to plug both ends of the tube. For high-pressure pipe passes, welding the end of the tube mouth after plugging prevents the plug head from dislodging.
Heat exchanger leakage occurs due to cracks and perforations caused by corrosion, wear, scouring, assembly strain, tube defects, or significant wall thickness deviations.
How to repair leaking heat exchange tubes?
1. Tube leakage at the nozzle is generally repairable, but internal tube sheet repair is not feasible.
2. If the number of leaking pipes is limited and blocked pipes suffice for production needs, conical metal plugging heads can be used to plug both ends of the tube. For high-pressure pipe passes, welding the end of the tube mouth after plugging prevents the plug head from dislodging.
