| 摘要 |
PURPOSE:To prevent a pole change by lack of hydrogen by providing a fuel gas flow control valve in a gas pipe connected with each separated fuel gas manifold and controlling the valve opening degree of the control valve so as to equalize voltage distribution along the height of an electric furnace. CONSTITUTION:The inside of a fuel gas outlet side manifold 13 is separated by partition plates 18 capable of shielding gas, and a gas pipe 16 for discharging fuel gas are connected to each separated manifold. An automatic fuel gas flow control valve 19 is provided in each gas pipe 16. The partition plates 18 and a layer-built cell 17 are electrically insulated from each other by means of gaskets 11 so as to prevent shortcircuit of the layer-build cell 17. The voltage of the layer-bilt cell 17 is measured by a voltage senser installed for every several cells, and signals are inputted into a controlling computer. The computer sends control signals to each control valve 19 so as to equalize voltage distributin along the height of the cell. A pole change by lack of hydrogen in a lower cell can thus be prevented. |
