Precautions for the use of electric heating tubes
1. The gap inside the heating tube is filled with magnesia sand. The magnesia sand at the outlet end of the heating tube is easily contaminated due to the infiltration of impurities and moisture. Therefore, pay attention to the state of the outlet end of the heating tube during operation to avoid leakage accidents. .
2. When the electric heating tube is used for heating liquid or metal solid, it is necessary to completely put the electric heating tube into the object to be heated, and it is not allowed to burn the electric heating tube. After the electric heating tube is used, if there is scale or carbon on the outer metal shell, it should be removed in time to avoid affecting the heat dissipation performance and service life of the electric heating tube.
3. When the electric heating tube is used for air heating, pay attention to the uniform arrangement of the electric heating tube. The advantage of this is to ensure that the electric heating tube has a relatively sufficient and uniform heat dissipation space, and ensure the fluidity of the air as much as possible, and improve the heating of the electric heating tube efficiency.
4. When the electric heating tube is used to heat easily meltable metal or solid nitrate, paraffin, asphalt and other substances, the heating material must be melted first. At this time, the external voltage of the electric heating tube can be reduced, and the rated voltage will be restored when the melting is completed. In addition, when heating nitrates and other substances prone to explosion accidents by electric heating tubes, safety measures must be fully considered.
5. The storage location of the electric heating tube must be kept dry and proper insulation resistance. If the insulation resistance of the storage environment of the electric heating tube is found to be too low during use, it can be used after being restored by low-voltage power. The electric heating tube should be properly fixed before use, and the wiring part should be placed outside the insulation layer, and avoid contact with corrosive and explosive media and water.
