Ways to prolong the service life of electric heating tubes

Ways to prolong the service life of electric heating tubes

The electric heating tube should be stored in a dry warehouse. If it is stored for a long time and the surface becomes damp, use a megohmmeter to measure the insulation resistance. If it is less than 1 megohm/500 volts, the heating tube should be placed in a 200 degree dry box for drying.　　2. The electric heating tube has been used for a long time. If the thick tube scale and oil scale are collected on the surface, it should be removed regularly, otherwise the heat transfer function of the electric heating tube will be reduced and the external heat load of the tube will be damaged.　　 3. Special attention should be paid to the heating medium when selecting electric heating tubes. There is no corrosive effect on the materials of electric heating tube and shell.　　4. Some of the electric heating tube heating should be fully immersed in the heating medium to prevent the unpleasant heat from exceeding the permitted heating temperature to damage the electric heating tube. In addition, some of the wiring leads should be exposed on the heater's insulation layer or outside the heater, so that some of them should not be overheated and endangered.　　5. Use two nuts to fasten the terminal of the electric heating tube when wiring. Do not use too much force to avoid the loosening of the lead screw and damage the electric heating tube.　　6. The voltage of the input power of the electric heating tube should not exceed 10% of the additional voltage marked on the various electric heating tubes. If it is applied to a voltage lower than the additional voltage, the heat generated by the electric heating tube will also be reduced.

The electric heating tube is an electrical component that specifically converts electrical energy into heat. Because of its low price, convenient use, simple equipment and no pollution, it can be widely used in various heating applications, such as various saltpeter tanks, water tanks, oil tanks, acid-base tanks, Molten metal melting furnace, air heating furnace, drying furnace, drying box, hot pressing mold and other equipment. According to different appearances, electric heating tubes can be classified into: straight single-ended heating tubes, straight double-ended heating tubes, u-shaped heating tubes, W-shaped heating tubes, special-shaped heating tubes, spiral heating tubes; The same can be divided into: heat sink electric heating tube for oven, electric heating tube for sauna bath, electric heating tube for water tank of rice steamer, tubular electric heating element for electric heating boiler of fastener equipment, tubular electric heating element for electric heating boiler of flange equipment, electric air heating Tube, liquid electric heating tube, boiler plus electric heating tube, etc.

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