Instructions for selecting explosion-proof tubular electric heating elements

Instructions for selecting explosion-proof tubular electric heating elements

1. When heating liquid, the effective heater must be fully immersed in the liquid and dry burning is strictly prohibited. When scale or carbon deposits are found on the surface of the pipe, they should be promptly cleaned and reused to avoid affecting heat dissipation and shortening service life.

2. When heating solid nitrate, alkali, asphalt, paraffin, etc., the operating voltage should be lowered first, and only after the medium melts can it rise to the rated voltage.

3. When heating nitrate, safety measures should be taken to prevent explosion accidents.

4. When heating the air, the components should be evenly rehearsed and crossed to provide good heat dissipation conditions for the components, so that the air flowing through can be fully heated.

5. The wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media, and moisture; The lead wire should be able to withstand the temperature and heating load of the wiring section for a long time, and excessive force should be avoided when tightening the wiring screws.

6. Heating elements should be stored in a dry place. If the insulation resistance is below 1MQ for a long time, they can be dried in an oven at around 200 degrees Celsius, or the voltage can be reduced by heating until the insulation resistance is restored.

Electric heating wires are mainly divided into nickel chromium electric heating wires and iron chromium electric heating wires. Electric heating wires are divided into civil electric heating wires and industrial electric heating wires according to their main purposes. The civil electric heating wire is mainly used for the production of civil electric heating pipes and other civil purposes, with a wire diameter generally between 0.6 and 0.15mm; The diameter of industrial electric heating wire is generally between 0.8-8mm. Industrial electric heating wire has the characteristics of wide use, fast heating, and high power. In addition to being used for industrial electric heating pipes, it is also used for other industrial equipment, such as:

1. High temperature furnace electric heating wire

2. Vacuum furnace electric heating wire

3. Annealing furnace electric heating wire

4. Industrial oven electric heating wire

5. Tin furnace heating wire, etc.

Precautions for use (special attention):

1. When designing electric furnace wires, the power wiring method should be followed, the surface load should be reasonable, and the wire diameter should be selected correctly;

2. Before installing the electric furnace wire, a comprehensive inspection of the furnace should be carried out to remove ferrite, carbon deposition, and potential hazards in contact with the electric furnace, to avoid short circuits and prevent wire breakdown;

3. The electric furnace wire should be correctly connected according to the designed wiring method during installation;

4. Before using the electric furnace wire, the sensitivity of the temperature control system should be checked to prevent temperature failure and damage to the electric furnace wire.

Www.superbheater.com