| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure vessel which facilitates the positioning of a door on a main unit, prevents a lock pin from being automatically unlocked in a condition where there is pressure in the mainunit, does not allow the door to rapidly opene even in case that the lock pin comes out in a condition where there is pressure in the main unit and has high safety. SOLUTION: A door 2 is provided openably and closeably in the front of a main unit 1, a block member 5 provided with a first and a second insertion hole 17, 18 is provided in one side part of the main unit 1, and a hook member 6 having a door side insertion hole 21 and notched part 22 is provided capable of swiveling in one side part of the door 2. The notched part 22 of the hook member 6 is engaged with a shaft large diametric part 25 of a guide shaft 9 when a lock pin 7 is placed in an unlock position, the notched part 22 of the hook member 6 oppositely faces a shaft small diametric part 26 of the guide shaft 9 when the lock pin 7 is placed in a lock position, and a pin small diametric part 24 of the lock pin 7 is inserted through the door side insertion hole 21. |
