| 摘要 |
PURPOSE:To early detect gas crossover and quickly take a suitable countermeasure by mounting an oxygen sensor just downstream in a fuel electrode and a flammable gas sensor just downstream in an oxidizing agent electrode. CONSTITUTION:Hydrogen gas enters a fuel electrode through a valve 9 and exhausted from a valve 7. Air is mixed with carbon dioxide through a valve 10 and enters an oxidizing agent electrode 2 and exhausted from a valve 8. When the hydrogen gas leaks to the oxidizing agent electrode 2 from the fuel electrode 1 through an electrolyte plate 3, a flammable gas sensor 5 mounted just downstream in the electrode 2 senses the hydrogen gas and a signal is sent to a controller 6. When the mixed gas of air and carbon dioxide gas leaks to the fuel electrode 1 from the oxidizing agent electrode 2 through the electrolyte plate 3, an oxygen sensor 4 mounted downstream in the fuel electrode senses the oxygen and a signal is sent to the controller 6. The controller 6 sends a signal to an alarm 19, and sends a signal to valves 7 and 8 to operate them. |
