| 摘要 |
PURPOSE:To facilitate maintenance, installation, and dismounting of a pump for liquefied gas by forming the collar part with which the stepped part of the casing of said pump is locked, on the inner peripheral wall of the cylindrical barrel for feeding liquid which is suspended in a liquefied-gas tank. CONSTITUTION:When a pump 3 is operated in the state where the stepped part 10a of the casing 10 installed onto a pump 5 is locked with the collar part 2a on the inside of a cylindrical barrel 2, the liquid whose pressure is increased by the pump 5 is discharged from a discharge port (not shown in the figure) installed in the upper part through the cylindrical barrel 2. At this time, the contact surface between the stepped part 10a and the collar part 2a is sealed by the liquid having the increased pressure. |
