The working principle of the electrically traced loading arm
The working principle of the electrically traced loading arm is to provide continuous and stable heat to the conveying pipeline of the loading arm through electric tracing technology, so as to maintain the transmission medium (such as easy-to-solidify, high-viscosity liquids, etc.) in the pipeline to flow within a set temperature range. This prevents the medium from solidifying, increasing viscosity, or crystallizing due to excessively low temperatures, ensuring the smooth progress of loading and unloading operations.
Specifically, its core working mechanism is as follows:
Heat Supply: Electric tracing tapes are laid on the surfaces of the conveying pipelines such as the outer arm and horizontal pipe of the loading arm. When energized, the electric tracing tapes convert electrical energy into thermal energy, transferring heat directly or indirectly to the pipelines.
Temperature Control: The system is equipped with temperature-sensing elements such as thermal resistors to monitor the temperature of the pipeline surface or the medium in real time, and feed the signals back to the temperature control circuit. Based on the set temperature range, the control circuit automatically adjusts the output power of the electric tracing tapes to ensure that the medium temperature remains within the required range (for example, above the critical temperature to prevent medium solidification in low-temperature environments).
Heat Conduction and Maintenance: The heat generated by the electric tracing tapes is conducted through the pipeline wall to the medium inside the pipe, compensating for the temperature loss of the medium during transportation due to environmental heat dissipation and other factors. This maintains the fluidity of the medium, ensuring that it can flow smoothly through the loading arm into storage tanks or transportation equipment during loading and unloading operations.
This working principle enables the electrically traced loading arm to operate without relying on traditional heat sources such as steam, allowing for more precise temperature control, more flexible installation and operation, and making it suitable for loading and unloading scenarios where the medium is sensitive to temperature. Hence, this question arises.
