Product Performance:
Stainless steel electric heating tube (electric heating tube) is made by placing electric heating elements in a metal tube, and tightly filling the gaps with crystalline magnesium oxide powder that has good heat resistance, thermal conductivity, and insulation, followed by other process treatments. It features simple structure, high mechanical strength, high thermal efficiency, safe and reliable operation, easy installation, and long service life. It is widely used in various devices such as nitre tanks, water tanks, oil tanks, acid-alkali tanks, fusible metal melting furnaces, air heating furnaces, drying furnaces, drying ovens, and hot pressing molds.
Product Structure:
Stainless steel electric heating tube (electric heating tube) uses a metal tube as the outer shell, with spiral electric heating alloy wires (nickel-chromium, iron-chromium alloy) evenly distributed along the central axis inside the tube. The gaps are filled and compacted with magnesium oxide sand that has good insulation and thermal conductivity. The tube ends are sealed with silicone or ceramic. This metal-clad electric heating element can heat air, metal molds, and various liquids.
BGY4/BGY2 Constant Temperature Explosion-Proof Tubular Electric Heater Direct Sales from Manufacturer Working Principle:
It converts electrical energy into heat 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 obtains 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 immediately cuts off the heating power supply, preventing the heated material from overheating, coking, deterioration, or carbonization, and in severe cases, burning out the heating element, effectively extending the service life of the electric heater.
Application Occasions:
1. Heating and temperature raising of chemical materials in the chemical industry, drying of some powders under certain pressure, chemical processes, and spray drying.
2. Heating of hydrocarbons, including crude oil, heavy oil, fuel oil, heat transfer oil, lubricating oil, paraffin, etc.
3. Heating of process water, superheated steam, molten salt, nitrogen (air) gas, water gas, and other fluids that need temperature raising.
4. Due to the advanced explosion-proof structure, the equipment can be widely used in chemical, military, petroleum, natural gas, offshore platforms, ships, mining areas, and other places requiring explosion-proof measures.
Precautions:
1. The element is allowed to work under the following conditions:
A. The relative humidity of the air is not more than 95%, and there is no explosive or corrosive gas. Except for explosion-proof heaters
B. The working voltage should not exceed 1.1 times the rated value, and the shell should be effectively grounded.
C. Insulation resistance ≥ 1MΩ; Dielectric strength: 2KV/1min.
2. The electric heating tube should be properly fixed, and the effective heating area must be completely immersed in liquid or solid metal. Dry burning is strictly prohibited. If scale or carbon deposits are found on the tube surface, they should be cleaned promptly to avoid affecting heat dissipation and shortening service life.
3. When heating fusible metals or solid nitrates, alkalis, asphalt, paraffin, etc., first reduce the operating voltage, and only after the medium melts can it be raised to the rated voltage.
4. When heating air, the elements should be arranged crosswise and evenly to ensure good heat dissipation conditions and fully heat the flowing air.
5. When heating nitrates, safety measures should be considered to prevent explosion accidents.
6. The wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media, and moisture. The lead wires should be able to withstand the temperature of the wiring part and the heating load for a long time. When tightening the wiring screws, avoid excessive force.
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