An explosion-proof electric heater is a device that converts electrical energy into thermal energy to heat the required materials. During operation, the low-temperature fluid medium enters the input port under pressure through the pipeline, flows along the specific heat exchange channels inside the electric heating container, following the path designed based on fluid thermodynamics principles, and carries away the high-temperature thermal energy generated by the electric heating elements during operation, thereby raising the temperature of the heated medium. The outlet of the electric heater provides the high-temperature medium required by the process. The internal control system of the electric heater automatically adjusts the output power of the electric heater based on the temperature sensor signal at the outlet, ensuring uniform temperature of the medium at the outlet. When the heating element overheats, the independent overheat protection device of the heating element immediately cuts off the heating power supply, preventing the heated material from overheating and causing coking, deterioration, or carbonization, which could severely damage the heating element, effectively extending the service life of the electric heater.
Explosion-proof heaters are generally used in hazardous locations where explosions may occur. Due to the presence of flammable and explosive oils, gases, dust, etc., in the surrounding environment, contact with electric sparks can cause explosions. Therefore, explosion-proof heaters are required for heating in such locations. The main explosion-proof measure of an explosion-proof heater is the installation of an explosion-proof device in the junction box, which eliminates the risk of ignition by electric sparks. For different heating applications, the explosion-proof rating requirements of the heater vary, depending on the specific situation.
Typical applications of explosion-proof electric heaters mainly include:
1. Heating of chemical materials in the chemical industry, drying of certain powders under pressure, chemical processes, and spray drying.
2. Heating of hydrocarbons, including crude oil, heavy oil, fuel oil, thermal oil, lubricating oil, paraffin, etc.
3. Heating of process water, superheated steam, molten salt, nitrogen (air) gas, water gas, and other fluids that require temperature increase.
4. Due to the advanced explosion-proof structure, the equipment can be widely used in hazardous locations such as chemical industry, military, petroleum, natural gas, offshore platforms, ships, mining areas, etc. Application examples
