Understanding electric tubular heater can make him serve you better
We know that the electric tubular heater is very precautionary in life and production. Under working conditions, it is a state of being charged and generating high heat. We know that the general substance will produce a certain change in the structure of the substance after being heated for a long time. The same is true for electric heating tubes, but as long as we use it correctly, we often maintain it. It is very helpful to the service life of the electric heating tube. Below we introduce the instructions for the use of the electric tubular heater.
1. Components are allowed to work under the following conditions: A. The relative humidity of the air is not more than 95%, without explosive and corrosive gases. B. The operating voltage should not be greater than 1.1 times the rated value, and the enclosure should be effectively grounded. C. Insulation resistance ≥1MΩ Dielectric strength: 2KV / 1min.
Second, the electric heating tube should be positioned and fixed, the effective heating area must be immersed in liquid or metal solid, and empty burning is strictly prohibited. When scale or carbonization is found on the surface of the pipe body, it should be cleaned and reused in time to avoid shadow heat dissipation and shorten the service life.
3. When heating fusible metal or solid nitrate, alkali, bitumen, paraffin, etc., the operating voltage should be reduced first, and the medium can be raised to the rated voltage after the medium melts.
4. When heating the air, the components should be arranged evenly, so that the components have good heat dissipation conditions, so that the air flowing through can be fully heated.
5. Safety measures should be considered when heating nitrate to prevent explosion accidents.
Sixth, the wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media, moisture; the lead wire should be able to withstand the temperature and heating load of the wiring part for a long time, and the tightening of the screw should avoid excessive force.
7. The components should be stored in a dry place. If the insulation resistance is lower than 1MΩ due to long-term storage, it can be dried in an oven at about 200 ° C or reduced in voltage and heated until the insulation resistance is restored.
8. The magnesium oxide powder at the outlet end of the electric tubular heater should be protected from the penetration of pollutants and moisture at the place of use to prevent the occurrence of electric leakage accidents. High temperature wire, thermocouple, bimetal thermometer, temperature control instrument.
