The solution to the bending of cryogenic pipes depends mainly on the degree and cause of the bending. Here are some common workarounds:
Heating recovery
If the pipe is severely bent but not yet a serious problem has occurred, the heating recovery method can be considered. A device such as a heating wire or flame heater can be used to heat the pipe locally, wait for the pipe to expand, and then slowly correct it with a tool until the pipe is back in shape.
Replace pipes
If the pipes are bent excessively and have developed serious problems that are starting to leak, replacing the pipes may be a better option. Pipe replacement needs to be carried out by professional workers, and suitable pipe replacement needs to be purchased according to the specific situation.
Prevention of bending
In order to prevent the pipeline from bending again, the following maintenance measures can be taken:
Clean the pipes regularly to prevent them from clogging.
Before the arrival of cold weather, use antifreeze and other methods to strengthen the cold resistance of the pipeline and reduce the risk of pipe bending.
In the process of pipeline design and installation, bending should be avoided as much as possible, and a design with a small bending angle and a large bending radius should be selected.
Insulation measures
For cryogenic pipes, insulation measures are particularly important. If the elbow needs to be insulated, the interface and welded joint of the pipe should be retained, and then the interface should be insulated after the hydrostatic test is qualified. In addition, the debris in the bends needs to be cleaned before the heat is warmed. Pipes that need to be insulated must meet the requirements for corrosion protection and pressure test, and civil works can only be closed after insulation is completed.
Please note that in the process of dealing with pipe bending problems, it is necessary to pay attention to safety, and it is also necessary to follow the corresponding operating specifications to ensure the effect of treatment and the safety of operation.
