Correct use of electric heating pipe and precautions for 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:

First of all, before ordering heating pipes, make sure that the electric heating tube is dry or water burned before the heating pipe is used to avoid the heat load per unit area too large, which allows the electric heating tube to be damaged. In addition, the drawing part of the connection should be exposed to the heat insulation layer or heater of the heater so that the part should not be overheated and damaged.

The input voltage can not exceed 10% of the rated voltage on all kinds of electric heating tubes, otherwise it will cause accidents. Meanwhile, the input voltage should not be lower than the rated voltage, otherwise the heat generated by the electric heating tube will also decrease.

The end should be kept clean and dry connection electric heating tube, 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;

When heating some viscose and other substances, such as sodium nitrate, stearic acid and paraffin wax, when heating, the power supply voltage should be reduced, so as to reduce the calorific value of the single ended stainless steel electric heating tube. When it is melted into liquid, it will rise to the rated voltage for heating.

The heating medium should be paid special attention to the heating medium in order to avoid the corrosion of the electric heating tube and shell material.

The use of electric heating tube 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;

The electric heating tube should be stored in a dry warehouse. If the surface is wet due to long-term placement, the insulation resistance should be measured with megaohmmeter before use. If less than 1 megawatts /500 volt, the electric heating tube should be placed in the drying oven of 200 degrees for drying.