Internal structure and appearance of electric heating tubes

Internal structure and appearance of electric heating tubes

Electric heating tube is a metal tubular electric heating element, with a metal tube as the outer shell (including stainless steel electric heating tube and copper electric heating tube), and spiral electric heating alloy wires (nickel chromium, iron chromium alloy) are uniformly distributed along the central axis of the tube. The gaps are tightly filled and compacted with crystalline magnesium oxide powder with good heat resistance, thermal conductivity, and insulation. The ends of the tube mouth are sealed with silicone and processed by other processes, This metal armored electric heating element has the characteristics of simple structure, safety and reliability, high thermal efficiency, high mechanical strength, and long service life.

Electric heating tube is a tubular electric heater element that converts electrical energy into thermal energy. Simply put, it is an electric heating device made by placing an electric heating element in a metal tube and processing it through a process. It is also a common type of electric heating equipment, with its biggest advantages being simple structure, low price, and the ability to heat air, metal molds, and various liquids; Widely applicable to various saltpeter tanks, water tanks, oil tanks, acid and alkali tanks, melting furnaces for fusible metals, air heating furnaces, drying furnaces, drying boxes, hot pressing molds and other devices. According to the different uses of electric heating tubes, their external structures also vary greatly, including single end heating tubes, single end fin heating tubes, right angle single head heating tubes, U-shaped heating tubes, W-shaped heating tubes, hexagonal nut heating tubes, hexagonal nut heating tubes, z-shaped titanium heating tubes, etc.

In the electric heating equipment market, electric heating tubes have been widely used, which is mainly determined by the advantages of electric heating tubes. The advantages of electric heating tubes mainly include:

1. The electric heating tube is clean and hygienic, free from smoke, oil, and environmental pollution.

2. Electric heating methods may concentrate and generate a large amount of heat energy within a very small range, thus enabling high-speed heating and reaching a predetermined temperature.

3. The electric heating power can be easily adjusted, making it easy to adjust the temperature and achieve automatic control.

4. There is no need for environmental atmosphere conditions, unlike the use of oxygen during fuel combustion, so the heated substance is not easily oxidized.

5. The heated items can easily achieve mobile mechanization and automation in the heating area, creating extremely favorable conditions for the use of electric heating in assembly and automatic lines.

6. Electric heating products and equipment are easy to make with a compact structure, convenient for maintenance, and can greatly improve the labor conditions of operators.

7. High thermal efficiency. Compared with other energy sources, the thermal efficiency of coal is about 12% -20%, that of liquid fuel is about 20% -40%, that of gas fuel is about 50% -60%, that of steam is about 45% -60%, and that of electricity is about 50% -95%.

8. Low thermal inertia, high temperature control accuracy, and good heating effect.

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