1. Core Structure and Materials
Low-temperature material: The main pipeline and rotating joints are made of stainless steel, low-temperature steel, or aluminum alloy, ensuring structural stability and crack resistance at extreme temperatures down to -196°C (such as LNG, liquid nitrogen).
Insulation Measures: Some models are equipped with vacuum insulation layers or thermal insulation jackets, reducing heat loss during the transportation of low-temperature mediums and preventing frost formation on the outer surface of the pipes.
2. Features and Performance Characteristics
Flexible Operation: The outer arm supports 360° rotation horizontally and adjustment vertically, paired with a spring balancing system to achieve quick and precise alignment with the tanker's opening, accommodating the loading and unloading needs of various vehicle types.
Drive System: Optional hydraulic, pneumatic, or electric drive to meet the automation control needs in low-temperature environments, reducing the risk of manual operation.
Safety Protection: Equipped with static grounding devices (resistance < 2Ω), explosion-proof control systems, and emergency ejection mechanisms to ensure safe handling of flammable and explosive media such as liquefied gases.
3. Typical Application Scenarios
Industry Sectors: LNG fueling stations, air separation equipment accessories, industrial gas storage and transportation, low-temperature chemical production, etc.
4. Installation and Usage Guidelines
Environmental Requirements: Install rain and snow protection when outdoors, maintain ventilation in the operating area, and keep away from fire sources and static electricity generators.
Operation Process:
After the hopper truck comes to a stop, connect the static grounding wire, and check the对接 status between the crane pipe and the tank opening.
Start the refrigeration system, open valves for loading and unloading, and monitor flow and pressure in real-time.
After completion of operations, drain the remaining fluid from the pipes, disassemble the joints, and reset the crane pipe.
Maintenance Points: Regularly inspect the aging of seals, maintain rotating parts with low-temperature lubricants, and prevent frozen moving parts in winter.
5. Market Supply and Selection Recommendations
Supplier Examples: Shenzhen Aotuwel Technology (LNG Low-Temperature鹤管), Lianyungang Guangyou Machinery (Customized Low-Temperature Steel鹤管), etc., supporting PLC control, vacuum insulation, and other high-end configurations.
Selection Parameters:
Nominal Diameter: DN50~DN200 (based on flow requirements)
Design Temperature: -196°C to +50°C (customized according to medium)
Pressure Rating: 1.6~4.0 MPa (High-pressure type available)
