| 摘要 |
PROBLEM TO BE SOLVED: To provide a tip structure of a lead pipe of a liquefied gas tank that can suppress the entrained amount of entrainment gas.SOLUTION: A tip structure 200 of a lead pipe 1 includes a nozzle pipe 4 provided at the lower end of a vertically extending main pipe 2. Liquefied gas LG received from the upper end side of the main pipe 2 of the lead pipe 1 thereby falls inside the main pipe 2 of the lead pipe 1 and is ejected from the nozzle pipe 4 on the side lower than a liquid surface LF. The tip side of the nozzle pipe 4 is formed with a resistance part 7 and a resistance part 8 that increase flow resistance. Descending gas BOG2 staying in the lead pipe 1 thereby increases in the nozzle pipe 4 for ejecting the liquefied gas LG, that is, the flow of ascending gas BOG4 increases, and the entrained amount of entrainment gas BOG1 entrained into the lead pipe 1 as a result decreases. |
