The design and use of electric heating tape

　　With the progress of science and technology, electric accompanied by tropical as a kind of high efficiency, safe heat preservation solution, gradually in the industrial and civil field is widely used. Whether it is pipeline, tank anti-freezing heat preservation, or road, bridge snow melting ice, electric accompanied by tropical show its unique advantages. This article will be from the electric accompanied by the design principle of tropical, the use of methods and precautions and other aspects of a detailed introduction.

　　First, the electric accompanies the design principle of the tropical

　　The electricity accompanies the tropical is a new kind of band constant temperature electric heater, its core material is conductive polymer composite material (plastic) and two parallel metal wires. This material has positive temperature coefficient (PTC) characteristics, that is, as the temperature rises, the resistance will automatically increase, thus limiting the output power. This kind of self-limiting characteristic makes the electric accompanying tropical belt can automatically adjust the heating power in different temperature environment, avoid overheating phenomenon occurs.

　　The working principle of electric accompanied by the tropical working principle is through the current flow through the conductive polymer composite material when the heat generated to achieve the accompanying heat effect. When the ambient temperature is lowered, the conductive material in the carbon particles connected to form a circuit, the current through these circuits to produce heat; when the ambient temperature rises, the conductive material in the carbon particles gradually separated, the circuit terminals, the resistance rises, the heating power is automatically reduced. This kind of automatic adjustment function makes the electric accompanies the tropical belt to be able to always keep in the best working condition, both energy-saving and safe.

　　Second, the use of electric accompanied by tropical

　　The use of electric accompanied by tropical relatively simple, but in order to ensure its normal work and extend the service life, still need to follow certain installation and use of norms.

　　Installation steps:

　　1. Preparation: Before installing the electric accompanied by the tropical, should ensure that the pipeline or equipment surface clean, dry, and has completed all the necessary installation and testing work.

　　2. Laying the electric accompanying heat tape: Lay the electric accompanying heat tape along the surface of the pipeline or equipment tightly, and avoid twisting and repeated bending as much as possible. For pipes, spiral winding or parallel laying can be used. For the tank, can be used flat or ring laying way. 3.

　　3. Fixed electric accompanying heat tape: Use heat-resistant tape to fix the electric accompanying heat tape along the radial direction on the surface of pipeline or equipment, fix it once every 0.5 metre to make sure that the electric accompanying heat tape is in close contact with the heated body.

　　4. Wiring and grounding: Connect the terminal of the electric heat tracing tape with the power supply and thermostat, and connect the braided network to ground to ensure safety.

　　5. Installation of heat preservation layer: after the electric accompanied by the tropical all installation, debugging end and power supply normal, then carry on the construction of heat preservation layer.

　　Precautions for use:

　　1. avoid damaging the outer sheath: in the process of storing, handling, installing and using, should avoid the electric accompanied by the heat by twisting, bending and external damage, so as not to destroy the insulation layer.

　　2. Avoid flammable and explosive medium: when installing, should avoid flammable and explosive medium may accumulate in the ditch pits and dark corners and other parts, and choose the appropriate explosion-proof temperature group.

　　3. Regular inspection and maintenance: although the electric accompanied by the tropical with self-limiting temperature characteristics and long service life, but still need to regularly check and maintain to ensure its normal work.

　　4. Reasonable setting of temperature controller: For the electric accompanying heat tape system equipped with temperature controller, the starting and closing temperature of temperature controller should be set reasonably according to the actual need, in order to realise the best accompanying heat effect and energy-saving effect.

　　Third, the electric accompanied by the tropical application occasions

　　The application range of electric accompanied by the tropical tape is very wide, almost covers all the occasions that need heat preservation. In the industrial field, the electric accompanies the tropical belt commonly used in petroleum, chemical industry, electric power, metallurgy, light industry, food, freezing, construction, gas, agricultural and sideline products production, processing and other industries of pipeline, storage tank accompanies the heat preservation, anticoagulation, anti-freezing. In the civil field, the electric accompanies the tropical belt commonly used in the family water pipe antifreeze, the road bridge melts the snow to melt the ice, the building roof and the drainage ditch antifreeze blocking and so on.

　　As a kind of efficient, safe and convenient heat preservation solution, electric accompanied by heat tape has been widely used in various fields. Through the reasonable design and correct use method, the electric accompanying heat tape can give full play to its advantages, and bring more convenience and safety guarantee for our production and life.