Customer always give feedback about the immersion heater tube explosion phenomenon when it is working.
Aujourd'hui, nous résumons une raison de ce problème :
1. Lorsque l'élément chauffant est humide et que la résistance d'isolation est inférieure à 10 mégohms, il est facile de provoquer la rupture de l'isolation et l'explosion du tube chauffant.
2. If the connection of heating connecting rod and heating wire is a wire smashing connection, the bottom of the wire is cylindrical. In the process of loading powder, the tube may be hollow or not dense after shrinking.
Après un chauffage à long-terme, en raison d'une mauvaise conductivité thermique et d'une dissipation lente de la chaleur, le fil chauffant est fusionné ou fondu et casse le tube.
3. There will be scale or oil scale on the surface when heating oil or water, oil scale and scale will directly affect the heat transfer of heating tube, electric heating tube is easy to burn out due to high internal temperature,causing serious explosion.
4. High temperature magnesia powder will be used in the heater element as high level quality. Working temperature of high temperature powder need to be less than 800 degree , but some design of the surface load is very large (that the power per meter is big in the hot zone), once the dehydration dry, temperature continues to rise, will soon reach above 1000 degree , this will lead to magnesium oxide powder burning; In the long run, the insulation performance of magnesium powder decreases, resulting in electric leakage explosion tube.
