Correct use and maintenance rules for stainless steel electric heating tubes

- Jul 02, 2019-

Stainless steel electric heating tube scientific name tubular electric heater element, is a coiled heating wire (resistance wire) placed in a metal tube, has a simple structure, high mechanical strength, high thermal efficiency, easy installation, long service life, etc., improper The use and maintenance methods will lead to damage to stainless steel electric heating equipment and even cause safety accidents. Let us introduce the correct use of stainless steel electric heating equipment and its maintenance rules:


1. When using, the heating part of the stainless steel electric heating equipment should be fully immersed in the heating medium to avoid the heat dissipation and the damage of the stainless steel electric heating equipment exceeds the allowable heating temperature. In addition, the wiring lead-out part should be exposed outside the heater insulation layer or heater so that this part should not be overheated and damaged;


2. The voltage of the input power supply should not exceed 10% of the rated voltage indicated on various stainless steel electric heating equipment. Otherwise, it is easy to cause an accident, and the input voltage should not be lower than the rated voltage. Otherwise, the heat generated by the stainless steel electric heating equipment is also Will decline accordingly;


3. When the terminal of stainless steel electric heating equipment is connected, use 2 nuts to be relatively fastened. Do not use excessive force to avoid loosening the screws and damage the stainless steel electric heating equipment.


4. The terminal of stainless steel electric heating equipment should be kept clean and dry, otherwise it will reduce the insulation performance and be short-circuited. If it is chemically corrosive, flammable, explosive or other liquid or gas environment, stainless steel electric heating equipment should be used. The wiring part is protected by an insulating sealing device to prevent accidents;


5. When heating certain adhesives and other materials, such as sodium nitrate, stearic acid, paraffin, etc., the power supply voltage should be lowered when heating, so as to reduce the heat generation of the single-end stainless steel stainless steel electric heating tube. Then rise to the rated voltage for heating;


6. When selecting stainless steel electric heating equipment, special attention should be paid to the heating medium to avoid the medium eroding the stainless steel electric heating equipment materials;


7. After using the stainless steel electric heating equipment for a period of time, if the surface gathers thick pipe scale and grease, it should be removed regularly. Otherwise, the heat transfer performance of the stainless steel electric heating equipment will be reduced, resulting in the surface heat load exceeding the rated allowable damage;


8. Stainless steel electric heating equipment should be stored in a dry warehouse. If the surface is damp due to long-term placement, the insulation resistance should be measured with a megohmmeter before use. If it is less than 1 megohm/500 volt, the product should be placed at 200. The drying oven is dried.