PURPOSE: To reduce the size of a device for recombining hydrogen with oxygen as a whole by housing a catalyst main body in a tube elongated in the vertical direction and installing a closing plug which is opened in connection with the pressure and/or temperature to the end face of the tube.
CONSTITUTION: A catalyst main body 2 is fixed to the projecting section 3 of the internal surface of a tube 1 and the section 3 is constituted so as to make the heat transfer between the main body 2 and tube 1 as small as possible. A closing plug 14 which is opened depending upon the temperature is installed to the end face of the tube 1. Since the end face is provided with bimetal conditions 15 elongated in parallel with each other in four segments and the conditions 15 expand outward as the temperature rises, a gas flow which is fanned when a gas is heated is generated in the tube 1. When a damage occurs, the plug 14 is opened by a generated high pressure and high temperature. As a result, the medium contained in a containment enters the tube 1. The hydrogen existing in the medium is catalytically recombined with simultaneously existing oxygen into water within the extend of the main body 2. The main body 2 is heated and a gas flow is generated in the direction shown by the arrow 16.
UIRII JIIKURAA
KURAUSUDEIITAA UERUNAA
