Porous graphite pressure equalizing electrode for converter valve cooling system

The invention discloses a porous graphite pressure equalizing electrode for a converter valve cooling system. The porous graphite pressure equalizing electrode is inserted into inner cooling water through a base on a cooling water tube and comprises a base and a cylindrical graphite porous probe, a lead-out conductive line conductively connected with the probe is arranged in the base, one end of the cylindrical graphite porous probe is in rigid connection with the base, the other end of the cylindrical graphite porous probe is inserted into the cooling water tube, and the cylindrical graphiteporous probe comprises a porous platinum sleeve with a graphite column embedded. With pressure equalizing capability of the electrode maintained, the porous graphite pressure equalizing electrode lowers unit current density of the surface of the electrode due to use of a cylindrical electrode, thereby slowing down formation of a scale layer, in addition, the porous structure controls volume of thescale formed on the surfa