What are the key components of an LPG loading arm, and what special functions do they have?
The key components of an LPG loading arm include swivel joints, telescopic arm sections, quick-connect couplers, valve systems, pressure/temperature sensors, and support frames, each with special functions tailored to LPG transfer. First, swivel joints: made of high-strength alloy materials with pressure-resistant and corrosion-resistant properties, allowing multi-directional flexible rotation to adapt to the docking of different transport vehicles. Second, telescopic arm sections: with precise length adjustment functions, ensuring accurate alignment with the LPG tank port, and the arm body is usually insulated to prevent LPG vaporization caused by temperature changes. Third, quick-connect couplers: equipped with self-locking and double-sealing structures, which can be quickly connected and disconnected, and effectively prevent LPG leakage during connection and disconnection. Fourth, valve systems: including emergency shut-off valves, pressure relief valves, and control valves. Emergency shut-off valves can be automatically triggered to close by sensors in case of overpressure, leakage, or fire; pressure relief valves can release excess pressure in the arm to avoid equipment damage; control valves adjust the LPG transfer flow rate stably. Fifth, pressure/temperature sensors: real-time monitoring of the pressure and temperature of LPG in the arm, and send alarm signals when parameters exceed the safe range. Sixth, support frames: with anti-vibration and stable support functions, ensuring the stability of the loading arm during high-pressure LPG transfer.
