Structural characteristics of electric radiation tubes

Electric radiation tube is a device that consumes electrical energy and converts it into thermal energy to heat materials that need to be heated. The electric heating element is encapsulated in a protective sleeve. After electric heating, the heat is indirectly radiated to the lining and the heated workpiece through the sleeve. The heating of electric radiation tubes is suitable for furnaces with protective and corrosive atmospheres, such as continuous furnaces, drum furnaces, well furnaces, etc. Electric heating radiation tube is a type of thermal energy that converts energy consumption into thermal energy and can be used to heat materials that require heating. During operation, the heating tube enters its input port through a low-temperature fluid medium under pressure, and follows the specific heat transfer channel inside the electric heating container. The path is designed using the fluid thermodynamics principle of the air electric heating tube to remove the high-temperature heat energy generated during operation. This increases the temperature of the heating medium in the air electric heating tube and heats the electric heating tube. The high-temperature medium required for this process can be obtained at the outlet.

The internal control system of the electric radiation tube automatically adjusts the output power of the electric heating tube based on the temperature sensor signal at the output port, so that the medium temperature at the outlet of the air electric heating tube is uniform. When the heating element of the wind power heating pipe overheats, the independent overheating protection device of the heating element immediately cuts off the heating power supply to avoid coking caused by overheating of the heating material inside the air power heating pipe. Deterioration and carbonization can cause the heating elements in the air electric heating tube to burn out, effectively extending the service life of the electric heating tube.

Classification of electric radiation tubes

1. Linear spiral annular radiation tube

This type of electric heating radiation tube consists of a heat-resistant alloy steel casing and a heater. Heaters generally use electric heating wires wrapped around heat-resistant insulating ceramic pipe cores with spiral grooves.

2. Ribbon spiral annular radiation tube

The structure of the heater is basically the same as the first heater, except that the heating elements are wrapped with resistance tape. The core of the heater mainly consists of several sets of core tubes. Under the same surface load, the radiation surface is larger, which can save materials. In general, radiation tubes heated at high power points use this form.

3. Axial corrugated cage electric heating radiation tube (commonly known as squirrel cage)

Its structure is to bend the resistance wire (strip) of the heating element into a "U" shape, string it into several insulated and high-temperature resistant ceramic support plates, and fix it with a heat-resistant rod in the middle. The lifespan of the radiation tube is longer.

Characteristics of electric radiation tubes

1. The core material is DC argon arc welding, which ensures technical indicators such as surface load and resistance difference.

2. Heat-resistant insulating ceramics have good thermal shock resistance, high temperature resistance, and long service life. The specifications of high, medium, and low temperature furnaces and special atmosphere furnaces can be selected. The shell system adopts seamless high-temperature resistant alloy pipes, plate rolled pipes, centrifugal cast pipes, non-metallic special anti-seepage carbon sleeves, etc., which are easy to install, inspect, and maintain, all carried out outside the furnace.

3. Compact structure, stable performance, single power supply, and several times the service life of ordinary electric heating tubes.

The above content is organized by Superb heater Company, super heater. Mainly professional production: industrial heating elements, temperature measuring elements, production equipment, accessories, and raw materials such as tubular heaters, tubular heaters, belt heaters, ceramic heaters, silicone rubber heaters, thermocouples, etc.

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