Electric heat tracing is also called heating cable and electric heating cable. It is composed of a conductive polymer, two parallel metal wires and an insulating sheath. It is a very practical insulation material for pipelines. The principle of electric heating is actually very simple. , Friends who don’t know can read this article carefully.

The heat tracing bag is a strip-shaped constant temperature electric heater. The resistivity of the heating element of the electric heat tracing has a high positive temperature coefficient and is connected in parallel with each other. It can automatically limit the temperature during heating, and automatically Adjust the output power without any additional equipment, it can be shortened arbitrarily or connected to a certain length for use, and allows multiple overlapping without the fear of high temperature hot spots and burning.

The principle of heat tracing bag is as follows:

1. In each heating cable, the number of circuits between the bus bars changes with the influence of temperature. When the temperature around the heating cable becomes cold, the conductive plastic shrinks the micromolecules and makes the carbon particles connect to form a circuit, and the current passes through these circuit, heating the heating cable.

2. When the temperature rises, the conductive plastic will expand the micromolecules, and the carbon particles will gradually separate, causing the circuit terminal and the resistance to rise, and the heating cable will automatically reduce the power output.

3. When the temperature becomes cold, the plastic returns to the shrinkage state of the micromolecules, and the carbon particles are connected accordingly to form a circuit, and the heating power of the heating belt increases automatically.

4. The self-limiting temperature heating cable has the advantages that other heating equipment does not have. The temperature it controls will not be too high or too low, because the temperature is automatically adjusted.

5. Electric heating has the advantages of preventing overheating, easy maintenance and energy saving, and can be cut into any length on site, connected by two-way or three-way junction box, which can be said to be very practical.

By comparing the electric heating cable with the traditional heating form, its characteristics have the following obvious advantages:

1. In terms of industry: the traditional form of heat tracing is to use steam and hot water to trace heat, and the investment cost is large (generally there are a series of equipment such as boilers, heating pipes, and water pumps). The electric heating cable only needs cables, electric heating cables and explosion-proof devices for special occasions, and the investment cost is greatly reduced.

2. In terms of energy saving: During the long-distance transportation of steam and hot water, the heat loss is considerable, and the heat energy that can be directly used on the heated pipeline also has the problem of uneven temperature. These can be avoided when using electric heating cables, which makes the heating efficiency high and saves unnecessary energy loss.

3. In terms of maintenance: the pipes used in traditional heat tracing are easy to rust, block, and corrode, so it is difficult to maintain. However, after the electric heating belt is installed and operated, it does not need maintenance under normal conditions.

4. In terms of economic benefits: the installation, operation and maintenance costs of electric heating cables are low.

5. Social benefit: it lies in environmental protection and energy saving. Construct a harmonious environment for the society.

6. For civil use: electric heating cables have unique advantages, which are incomparable to other products. For example, solar water heaters are commonly seen in the cold winter. Now families and some offices in the northern region are seeking heating with electric heating cables (such as: Ground heating, roof heating snow, road melting ice, etc.) are constantly heating up in the process of replacing steam.