Kakšno je delovno načelo cevastih grelnikov?

Delovni načelo cevastih grelnikov temelji na različnih metodah prenosa toplote za prenos toplote na ogrevani objekt .

Heat transfer source: The heating source of tubular heaters can be in various forms. For example, in some tubular heating furnaces, the heating source can be a resistance heating element, a gas burner or other heating equipment. For tubular electric heaters, electrical energy is converted into thermal energy, and the heat generated by the resistance wire when the current passes through is used to heat the medium in the Tube . Njegova struktura je običajno sestavljena iz kovinskih cevi, upornih žic in izolacijskih materialov . Kovinska cev lahko zaščiti uporno žico in učinkovito izvaja toploto .

Metoda prenosa toplote: Ko se toplota ustvari, se v cevastem grelniku prenese na različne načine . v cevasti ogrevalni peči se toplota, ki jo ustvari ogrevalni vir Konvekcija . Na primer, v surovi benzenski cevasti peči surovina vstopi v ogrevalno peč skozi dovodno cev, gorivo ali plin pa se prenaša skozi ogrevalno cev . toplota, ki se sprosti z zgorevanjem goriva, ki se ogreva, da se temperatura cevi vzgaja in povzroči, da se temperatura cevi vzbudi in povzroči, da se temperatura cevi dvigne in povzroči, da se temperatura cev V tem postopku bo igrala tudi določeno vlogo . Če želite izboljšati učinkovitost prenosa toplote, se ponavadi namesti toplotni izmenjevalec ali pa se sprejme večplastna zasnova . Toplotni izmenjevalec lahko poveča kontaktno območje med cevjo in delovnim objektom in tako izboljša učinkovitost prenosa toplote .

Temperature control mechanism: During the heating process, the heating speed and temperature can be controlled by controlling the heat supply of the heating source or adjusting the flow rate of the fluid in the pipe. For example, the water pipe heater uses a digital temperature regulator, a solid-state relay and a temperature measuring element to form a measurement, adjustment and control circuit.

During the heating process, the temperature measuring element sends the outlet temperature electrical signal to the digital temperature regulator for amplification and comparison, and then displays the measured temperature value. At the same time, the signal is output to the input end of the solid-state relay, thereby controlling the heating process of the heater, so that it has good control accuracy and adjustment characteristics, and the interlocking device can be used to Na daljavo zaženite in izklopite grelnik vodnih cevi .