Precautions for use of explosion-proof electric heating pipe:
1. The components must be allowed to work under the following conditions: a. the relative humidity of the air shall not be greater than 95%, and there shall be no explosive and corrosive gases. B. The working voltage should not be more than 1.1 times of the rated value, and the shell should be effectively grounded.
2. The explosion-proof electric heating pipe should be well positioned and fixed. The effective heating area must be immersed in liquid or metal solid, and no empty burning is allowed. When the scale or carbon is found on the surface of the pipe body, it should be cleaned and reused in time to avoid affecting the heat dissipation and shortening the service life.
3. When heating fusible metal or solid nitrate, alkali, asphalt, paraffin, etc., the service voltage should be reduced first, and then the rated voltage can be raised after the medium is melted.
4. When heating the air, the elements should be arranged in a cross and uniform way, so that the components have good heat dissipation conditions and the air flowing through can be fully heated.
5. Safety measures should be considered when heating nitrate to prevent explosion accidents.
6. The wiring part shall be placed outside the thermal insulation layer to avoid contact with corrosive and explosive media and water; the lead wire shall be able to withstand the temperature and heating load of the wiring part for a long time, and excessive force shall be avoided when the wiring screws are tightened.
7. The components should be stored in a dry place. If the insulation resistance is lower than 1m Ω for a long time, it can be dried in the oven at about 200 ℃, or the voltage can be reduced and electrified for heating until the insulation resistance is restored.
8. The magnesia powder at the outlet end of the explosion-proof electric heating pipe can avoid the penetration of pollutants and moisture in the use place, so as to prevent the occurrence of leakage accidents. |
