LNG trailers are used to transport cryogenic liquefied gases, such as Liquefied Natural Gas, Liquid Nitrogen, and Liquid Oxygen. They are cryogenic pressure tank semi-trailers and are commonly used in long-distance natural gas transportation, distributed energy supply, and urban gas station refueling.
Production time: 20 – 30 days
Capacity: Customizable
$40,000.00
LNG cryogenic liquid transport semi-trailers consist of a tank body, running gear, support devices, towing seat, and side protection.
The tank body comprises a carbon steel outer cylinder and a concentric austenitic stainless steel inner cylinder. Dozens of layers of aluminum foil are wrapped between the inner and outer cylinders and evacuated to a high vacuum. An absorbent is also placed in the interlayer to maintain the vacuum long-term.
1.The LNG tank trailer tank has a valve box at the rear, where operating valves and instruments are typically located. To ensure stable and safe storage and transportation of cryogenic liquids, the tank is equipped with multiple safety devices and instruments: a pressure gauge and level gauge assembly, an outer cylinder explosion-proof device in the interlayer, and a combined safety system (a four-safety-valve system) in the inner cylinder. The safety valves are set at 0.68/0.73 MPa, and two sets of safety valves are controlled by a three-way switching valve.
2.When the LNG tank trailer is overfilled (greater than 92% fill rate) or parked at high temperatures for an extended period, causing the tank pressure to exceed the working pressure, the safety valves will activate. The tank pressure will then drop. When the tank pressure reaches 0.9 times the set pressure, the safety valves will automatically reseat. However, for safety and economic reasons, and to avoid frost jamming during automatic reseatment, the three-way switching valve can be used to close the currently operating safety valve, forcing it to reseat and putting the other safety valve set into operation. A pressure gauge is installed in front of the tank, along with pipeline safety valves. Gases released from the safety valves and vent valves are centrally discharged via flame arresters. The bottom inlet pipeline, pressurization pipeline, and gas phase pipeline for loading and unloading are equipped with triple protection (an emergency shut-off valve at the base, a stop valve, and a blind flange).
| Internal tank | External tank | |
| Design pressure | 0.63/-0.07MPa | |
| Tank body and end cap materials | S30408 | Q345R |
| Air tightness test | Helium detection | |
| Design temperature | -196℃ | 50℃ |
| Adiabatic form | Vacuum insulation | |
| Suspension | FUWA Air suspension |
| Axle brand | FUWA |
| Landing gear | 28T FUWA |
| Tire type | 12R22.5 |
INTAI trailers also offer tank trailers, including LPG and fuel transport trailers. INTAI Trailers have consistently received positive feedback from customers in Africa, Southeast Asia, and the Americas.
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