Correct use of electric heating tube and matters needing attention in maintenance

With the explosion-proof heater is used more and more widely, the demand of the electric heating pipe is also increasing, while the service life of the electric heating pipe has got the maximum extension, but if the improper use and maintenance will lead to shorten the service life of electric heating tube, the following Xiaobian I will introduce the correct method of using electricity the heating pipe, and the maintenance of the electric heating pipe:

1. first of all: before ordering the heating pipe, first make sure the electric heating pipe, use dry burning or water burning, in order to avoid heat load per unit area is too large, more than allowing heating temperature, so that the electric heating pipe damage. In addition, the wiring lead shall be exposed outside the heater's insulation layer or heater so that it shall not be overheated;

2. voltage input power cannot exceed the various electrothermal tube marking the rated voltage of 10%, otherwise easy to cause the accident, voltage input at the same time should not be lower than the rated voltage, otherwise the heat generated by the electric heating pipes will fall;

3. electric terminal should keep clean and dry, otherwise it will reduce the insulation performance and short circuit breakdown, if the application has chemical corrosion, inflammable and explosive gas or liquid environment, should be electric wiring insulation sealing device in part to strict protection, to prevent accidents;

4. heating some viscose and other substances, such as sodium nitrate, stearic acid, paraffin, beginning when heated should be reduced to reduce the supply voltage, single ended stainless steel tube heat to all melt and become a liquid, and then heated to the rated voltage;

5. the use of electric heating pipe should pay special attention to heating medium, to avoid erosion of dielectric pipe shell material;

6. electric heating tube using time after a period of time, if the tube surface scale and gathered thick grease should be removed regularly, otherwise it will make the electric heating tube heat transfer performance is reduced, resulting in tube surface heat load over rated to damage;

7. electric heating pipe should be stored in dry warehouse, if the long-term placement due to the surface moisture, before use should use zhaooubiao measuring the insulation resistance, if less than 1 volt megohm /500 should be placed on the heating tube 200 degrees for drying oven