Water Tank Boiler Thermal Oil Preheating Rod
Dali Electric recommends
Stainless steel double-head electric heating tube uses a metal tube as the shell, with spiral electric heating alloy wires (nickel-chromium, iron-chromium alloy) uniformly 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. Both ends of the tube are sealed with silicone or ceramic. This metal-sheathed electric heating element can heat air, metal molds, and various liquids. Depending on the different usage states, safety, and installation requirements of the heating tube, it may also include sealing structures, terminal part structures, flanges, temperature controllers, or fuses and other structures.
2. Product Performance
The stainless steel electric heating tube is made by placing heating elements inside 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 processing techniques. It features simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation, and long service life. It is widely used in various saltpeter tanks, water tanks, oil tanks, acid and alkali tanks, molten metal furnaces, air heating furnaces, drying ovens, drying boxes, hot press molds, and other equipment.
3. Precautions for Using Electric Heating Tubes
1) The element should be stored in a dry place. If the insulation resistance drops below 1 megohm due to long-term storage, it can be dried in an oven at about 200°C for several hours (or pass low voltage through the element for several hours) to restore the insulation resistance.
2) If carbon deposits are found on the tube surface, they must be completely removed before reuse to avoid reducing efficiency or even burning out the element.
3) When melting solid oils such as asphalt and paraffin, the voltage should be reduced during use, and then increased to the rated voltage after melting. This prevents concentrated electrical energy from reducing the element's service life.
Note: The above information and technical parameters are compiled and released by Yangzhou Dali Electric Co., Ltd.
