| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an internal pressure explosion proof system which can urge the inspection of pneumatic machinery by providing a means for detecting the high pressure abnormality in an internal pressure explosion proof mechanism and for informing the abnormality to a user, and also can lower the excessive pressure in an internal pressure chamber. <P>SOLUTION: A high pressure abnormality detecting means 8 and a pressure regulating valve 74 are provided in an air discharging section 7 for releasing the air discharged from the internal pressure explosion proof mechanism 2. The operating pressure of the high pressure abnormality detecting means 8 is set to be lower than the operating pressure of the pressure regulating valve 74. When the pressure in the air discharging section 7 has become higher than the set operating pressure, the high pressure abnormality detecting means 8 transmits a signal to a control unit 1 so that the control unit 1 gives the alarm via an alarming means 9, and opens a releasing valve 73, and lowers the excessive pressure in the internal pressure chamber of the internal pressure explosion proof mechanism 2. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
