BURST PLATE DEVICE FOR PREVENTING EXPLOSION HAZARD

摘要

PURPOSE:To securely prevent a hermetically sealed device itself from being broken, by a method wherein when an explosion occurs in the interior of a hermetically sealed device, the explosion is detected, and a safety burst plate is bursted immediately and securely. CONSTITUTION:When an explosion occurs at the position of a heater 23 in a pressure vessel 1, light generated in the initial stage of the explosion is inputted into a photo-electric converting element in a photo-electric converting circuit 28a through an optical fiber 27a, so that a solenoid valve 17 is operated to make the pressure in an intermediate pressure chamber 16 equal to the atmospheric pressure, whereby the first burst plate 9 is immediately bursted. As a result, the second burst plate 10 is also bursted consecutively. Accordingly, the explosion pressure in the vessel 1 is released to a safe space through a release pipe.