The electric heating pipes must be sealed

     Article Center: Lin Diao Hot/Xiaobian: Lin Diao Hot (Dongguan) Co., LTD


Lin called the heat to take you to understand how the electric heating tube is sealed? In the electric heating tube structure, the spiral heating wire and the metal tube shell are filled with dense powder-like filling material. The filling material has good thermal conductivity and insulation properties when it is dry and dense. However, they all have different degrees of moisture absorption, and the filling material exposed at both ends of the heating tube will greatly reduce its electrical insulation performance once it is moisture-absorbent. When the end of the heating tube is not sealed, the moisture absorption of the filler has a great effect on the insulation performance of the electric tube. On the other hand, when the magnesium oxide is hygroscopic, a part of the magnesium oxide (especially the part of the crystal state is not good or imperfect) will occur hydration. The hydrated magnesium oxide will make its molecular particle size increase and caking. For the electric heating pipe, the tube mouth absorbs the most moisture, so the caking is also serious. Once the tube mouth caked, the moisture absorbed by the deeper filling from the tube mouth is more difficult to discharge, resulting in the electric heating tube can not make the insulation recovery when it heats itself, and even the water in the heating tube is heated and vaporized and expanded, causing the false heating tube wall bulge and burst phenomenon. The insulation decreases when it is wet, and the molecular particle size increases after hydration affects the recovery of the insulation resistance of the heating tube. In terms of these two points, Lin thermal suggests that the electric heating tube needs to be sealed.


For more information about electric heating products, please contact: Lin Zhi Electric/Zhang Yu 18988721575