The principle of an electric heating tube is to convert electric energy into thermal energy. If leakage occurs during operation, especially when heating in liquids, failure of the electric heating tube can easily occur if the leakage is not addressed in a timely manner. Such issues may be caused by incorrect operation or unsuitable environments. To prevent accidents, it is important to pay attention and follow the correct operating procedures:
1. When using electric heating tubes for air heating, ensure that the tubes are evenly arranged, providing sufficient and even space for heat dissipation. Additionally, ensure airflow is not obstructed as this can improve the heating efficiency of the electric heating tubes.
2. When using electric heating tubes to heat easily melting metals or solid substances such as nitrates, paraffin, asphalt, etc., the heating substance should be melted first. This can be done by reducing the external voltage to the electric heating tubes temporarily, and then restoring it to the rated voltage once melting is complete. Furthermore, when heating nitrates or other substances prone to explosion accidents, it is necessary to consider appropriate safety measures.
3. The storage location of the electric heating tubes must be kept dry with suitable insulation resistance. If the insulation resistance in the storage environment is found to be low during use, it can be restored by applying a low voltage before use. The electric heating tubes should be properly secured before use, with the wiring placed outside of the insulation layer, and avoid contact with corrosive, explosive, or water-submerged mediums.
4. The gap inside the electric heating tubes is filled with magnesium oxide sand. The magnesium oxide sand at the output end of the electric heating tubes is prone to contamination due to impurities and water seepage. Therefore, attention should be paid to the state of the output end during operation to avoid leakage accidents caused by this contamination.
5. When using the electric heating tubes for heating liquids or solid metals, it is important to completely immerse the electric heating tubes into the heating material. Dry burning (not fully submerged) of the electric heating tubes should not be allowed. After use, if there is scale or carbon buildup on the outer metal tube of the electric heating tubes, it should be promptly removed to avoid affecting the heat dissipation performance and service life of the electric heating tubes.
In addition to paying attention to the above points to effectively prevent electric heating tube leakage, it is recommended that customers purchase from larger, standardized, and reputable companies to ensure the quality of the products.
Post time: Oct-17-2023
