The working principle and scope of application of explosion-proof heaters include points for attention
Explosion-proof heater is a kind of electric energy consumption is converted into heat energy to heat the material to be heated. The temperature of the heated medium is increased, and the outlet of the electric heater obtains the high-temperature medium required by the process. Avoid overheating of heating materials to cause coking, deterioration, carbonization, and in serious cases, burnout of heating elements, effectively prolong the service life of electric heaters. The main explosion-proof measure of explosion-proof heaters is that there is an explosion-proof device in the junction box of the heater to eliminate the hidden danger of electric spark detonation. For different heating occasions, the explosion-proof level requirements of the heater are also different, depending on the specific situation. The main application occasions are: hydrocarbon heating, applied in chemical industry, military industry, oil, natural gas, offshore platforms, ships, mining areas and other places where explosion-proof is required. Online shopping for explosion-proof heaters has become a form of equipment purchase for many companies, and the sales methods of explosion-proof electric heaters have also changed, because customers only see product pictures, technical information and corporate images on the website on the Internet. All of them are manufacturers on the Internet. In fact, there are not many manufacturers with real scale in China, so the quality of explosion-proof electric heaters ordered online must be strictly checked. Explosion-proof heaters are designed and manufactured with different emphasis on different heating methods. Since the heat is generated from the heated object itself, it belongs to internal heating and has high thermal efficiency. Indirect resistance heating needs to be made of special alloy materials or non-metallic materials to produce heating elements. The heating elements generate heat energy, which is transmitted to the heated object through radiation, convection and conduction. With the development of power electronic technology, IF inverter power supply with thyristor is now used. This intermediate frequency power supply uses thyristors to convert the power frequency alternating current into direct current, and then convert the direct current into alternating current of the required frequency. Due to the small size, light weight, noiselessness, and reliable operation of such frequency conversion equipment, it has gradually replaced the intermediate frequency generator set.
At the same time, the explosion-proof heater organic heat carrier furnace is a new type of special explosion-proof industrial furnace that is safe, energy-saving and efficient, and can provide high-temperature thermal energy on the basis of absorbing foreign advanced technology. After being unloaded by the thermal equipment, the heat transfer oil passes through the circulation pump again, returns to the electric heating furnace and absorbs heat to be transmitted to the thermal equipment, and so on, so as to realize the continuous transmission of heat. Such as:
① Conventional electrical protection, leakage protection, short circuit protection, etc.
② There are multiple interlocking interfaces to effectively monitor the oil pump, flow rate and pressure at any time.
③A set of over-temperature alarm system independent of normal temperature control is provided. When the conventional temperature control is out of control due to various reasons, the system can not only alarm in time, but also irreversibly turn off the electric heater to ensure the safe operation of the system. And input the contact signal. The internal control system of the electric heater automatically adjusts the output power of the electric heater according to the temperature sensor signal of the output port to make the medium temperature of the output port uniform;
