| 摘要 |
PROBLEM TO BE SOLVED: To avoid inflammable gas such as hydrogen and carbon monoxide contained in a leakage gas discharged to the atmosphere, when the gas leaks from a reforming device 5, in a fuel cell system wherein electricity is generated by reacting hydrogen obtained by reforming a raw material gas comprising a city gas and the like with oxygen in the air and heat generated by the reaction can be used. SOLUTION: A leakage gas collecting part 20 is provided so as to airtightly cover the reforming device 5, and a leakage gas passage 21 to lead the leakage gas in the collecting part 20 to a combustion part 15 for processing anode off gas in the fuel cell 12 is provided. A sweep gas passage 22 to introduce a part of the air in an air introducing passage 2 to the collecting part 20 as a sweep gas is also provided. In addition, a sensor 23 to detect the leakage gas is provided in the collecting part 20. |
