| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure tank in which a structure of an abnormal state detecting device arranged therein is simple and its cost can be reduced. SOLUTION: There is provided an abnormal state detecting device 58 comprised of a switching element 59 for outputting a signal upon mechanical direct reception of a pressing force and changing a signal value to be outputted in response to a value of the pressing force, and a pressing member 54 having at one end a head segment 54a protruded from a hole 19 arranged in a pressure tank 52 into the pressure tank 52 and having at the other end a pressing rod 54b for applying a direct mechanical pressing against the switching element 59.
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