| 摘要 |
<p>PURPOSE:To detect leakage of the filler gas in a pressure vessel at an early stage, and prevent a decline of the bag body function by setting a bag body location sensor which is operated according to the movement of the bag body, at the side wall of the main body. CONSTITUTION:As the filler gas leaks little by little from a fitting area, for example, from a manhole fitting area, the pressure inside a gas-filled space 3 decreases and a bag body 2 does not remain at position B. When the filler gas leaks still more, the bag body 2 is raised to position A and pushes the valve 16 of a pressure sensor 11 set at the side wall of the main body. In this process, the filler gas pours into a pressure measuring space 18, pressure inside of the space 18 increases, and an alarm is raised outward.</p> |
