There are many types of electric heat tracing, and their uses are different, which leads to the difference in the properties of electric heat tracing. In addition to the different heating temperature of electric heat tracing
The outer sheath of the belt is one of the important factors affecting the use of the heating cable. We divide the electric heating cables into shielded electric heating cables, explosion-proof electric heating cables, and anti-corrosion electric heating cables.
When the belt and other models are used, it is also determined by the material of the outer sheath of the electric heating cable. Below we will introduce the commonly used electric heating cable outer sheath.
Basic electric heating cable: It is composed of copper core wire, conductive plastic layer and insulating layer. The insulating layer is the outer sheath layer of heat tracing, and the outer sheath of the insulating layer serves as insulation
The role of polyolefin (PVC) is generally used, which is a polymer material with relatively small molecular structure density, which is non-flammable, high-strength
degree, weather resistance and excellent geometric stability. This type of electric heating cable is suitable for thermal insulation and heating of pipes in humid areas and outdoor.
Hazardous area to be grounded.
Shielded heating cable (explosion-proof electric heating cable): It is to add a metal shielding layer on the basis of the basic electric heating cable. The metal shielding layer can not only connect
Ground, plays the role of grounding protection, effectively reduces static electricity, can also reduce the harm caused by static electricity, and effectively reduce the possibility of explosion in dangerous areas.
Moreover, the metal shielding layer of explosion-proof heat tracing also provides good mechanical properties for the electric heating cable, which can effectively protect the electric heating cable from damage caused by external factors and improve the
The service life of the heating cable.
Anti-corrosion electric heating cable: The main structure of the outer sheath layer is anti-corrosion materials such as (PF46 and PF26), fluorine materials have good anti-corrosion properties and can effectively
To prevent the adverse effects of external harsh environment on the heat tracing, it can protect the heating cable to a certain extent, so that the electric heating cable has a longer service life.
Anti-corrosion and explosion-proof electric heating cable: It has the dual characteristics of anti-corrosion heating and explosion-proof electric heating cable. It is covered with a layer of anti-corrosion fluorine material on the basis of explosion-proof heating.
The fluorine material anti-corrosion layer is the source of the anti-corrosion properties of the electric heating cable, which can effectively prevent the external environment from affecting the electric heating cable.
It is used for thermal insulation and antifreeze of industrial, petroleum, fire protection and outdoor pipeline equipment. The function of the metal shielding layer of the electric heating cable is basically the same as that of the explosion-proof electric heating cable.
The same, play the role of explosion-proof, in addition to static grounding protection.