widely used in petroleum, chemical, food, machinery and other industries. Below is a detailed introduction to the flange electric heater, including its working principle, application scope, structural layout, usage and maintenance, etc.
Working Principle
The flange electric heater is mainly composed of multiple U-shaped tubular electric heating elements, which are welded or threaded to a flange cover for easy installation and removal. The electric heating element contains high-resistance heating wire inside, filled with thermal conductive material around it. When current passes through these electric heating elements, the heating wire generates heat, converting electrical energy into thermal energy. This heat is transferred to the heated medium through the thermal conductive material, raising the medium temperature to meet the required process requirements. The control system adjusts the output power of the electric heater through PID calculation based on the signal fed back by the temperature sensor, achieving precise control of the medium temperature.
Structural Layout
The basic structure of the flange electric heater includes:
Electric heating element: U-shaped tubular electric heating element, with resistance wire inside.
Flange cover: used to fix the position of the electric heating element.
Insulation layer: prevents direct contact between the electric heating element and external objects, ensuring safety.
Control system: includes temperature sensor, PID controller, etc., used to monitor and regulate temperature.
Interlock protection device: automatically cuts off power in case of overtemperature or low liquid level, protecting the equipment.
Application Scope
Flange electric heaters are mainly used in:
Petroleum: heating of crude oil, heavy oil, etc.
Chemical: heating of chemical reaction kettles, pipelines.
Food: heating and insulation during food processing.
Machinery: heating of materials in various storage tanks, containers, oil tanks.
Usage and Maintenance
Distinguish connection methods: ensure correct distinction between delta connection and star connection, and the operating voltage must not exceed the rated voltage.
Grounding protection: the electric heating tube must be effectively grounded.
Selection of terminal lugs: use correct terminal lug models and power cord specifications, and ensure tight wire connections.
Regular cleaning: regularly remove the heating tube and use a soft cloth for mechanical wiping; chemical cleaning solutions are strictly prohibited.
Position fixing: ensure the heating tube is well fixed to avoid damage due to vibration or movement.
Summary
Flange electric heaters occupy an important position in the industrial heating field due to their reasonable design, excellent process, safety, reliability, and long lifespan. Through proper maintenance and use, their long-term stable operation can be ensured to meet various heating needs. If you need more detailed information or encounter specific problems, please feel free to ask.
