Kaip visi žinome, elektriniai šildymo kabeliai skirstomi į pastovios galios elektrinius šildymo kabelius ir savaime{0}}ribojančios temperatūros elektrinius šildymo kabelius, o pastovios galios elektriniai šildymo kabeliai dar skirstomi į serijinius pastovios galios elektrinius šildymo kabelius ir lygiagrečius pastovios galios elektros kabelius. šildymo kabeliai. Žmonės dažnai painioja tokius elektros šildymo kabelių tipus ir neaišku, kuo jie skiriasi. Čia paaiškinamas skirtumas tarp nuoseklaus ir lygiagretaus nuolatinės galios elektros šildymo kabelių ir savaime-ribojančios temperatūros elektrinių šildymo kabelių.
1. Skirtumas tarp serijinio pastovios galios elektrinio šildymo kabelio ir lygiagrečios pastovios galios elektrinio šildymo kabelio
1. The constant power electric heating cable in series cannot be cut, and the constant power electric heating cable in parallel can be cut.
2. The heating elements of the two are different: the series electric heating cable adopts nickel-chromium alloy wire (the metal bus inside is heated), and the parallel electric heating cable adopts nickel-chromium winding wire for heating (that is, the winding wire wound on the outside, the metal busbar inside to conduct electricity).
3. The parallel constant power electric heating cable is suitable for large tanks and pipelines with high temperature requirements and explosion-proof areas, and the series electric heating cable is suitable for long-distance pipelines such as oil long-distance pipeline heating and large-scale tank insulation.
2. Skirtumas tarp savaime-ribojančios temperatūros elektrinio šildymo kabelio ir pastovios galios elektrinio šildymo kabelio:
1. Working principle
Savaime ribojantis{0}}temperatūrinis šildymo kabelis: įjungus maitinimą, srovė tiekiama vienu iš laidų ir per PTC šerdį nukreipiama į kitą laidą, kad susidarytų kilpa, o šerdis su varžos verte įkaista. aukštyn.
Pastovios galios šildymo kabelis: Kai izoliuotas laidas yra maitinamas, srovė praeina per šildymo laidą, o šildymo laidas generuoja šilumą ir perduoda šilumą.
2. Structural differences
Self-limiting temperature heating cable: PTC polymer conductive material is filled between the two wires.
Constant power heating cable: The copper-nickel heating wire is wound around the insulated wire and connected to the insulated wire at a distance.
3. Use environment
Self-limiting temperature tracing cable: used in places where the environment is not very complicated and the temperature requirements are not high.
Constant power heating cable: suitable for occasions where the user environment is more complicated and the temperature requirements are higher.
4. Use effect
Self-limiting temperature heating cable: It can adjust its own heating temperature according to the ambient temperature.
Constant power heating cable: the temperature remains unchanged, the calorific value and power are constant, and the stability performance is relatively strong.