| 摘要 |
PURPOSE:To prevent the exfoliation of a lining material when electrode plates are attached or detached by providing a step which is larger than the lining material at the lower part of a bolt for fixing a sacrificial positive electrode plate and the outer diameter including the lining material of the stage circumference is made smaller than the outer diameter at the upper part thereof in a sea water system container. CONSTITUTION:The step, whose thickness is the same as the thickness (t) of a rubber lining 6, is provided at the lower end part of the attaching bolt 22, which is welded to a front water chamber 1 and has an outer diameter d1. After the lining has been applied, the outer diameter d2 of the attaching part is set so that it is made smaller than the outer diameter d1 of the bolt 22. A cushion 20 is inserted into the bolt 22, and the sacrificial positive plate 17 is attached. In this constitution, since nothing is protruded from the outer diameter d1 of the bolt 22, the part of the diameter d1 of the attaching bolt 22 serves as a guide when the cushion 20 is inserted, fabrication becomes smooth, and the damages and exfoliation of the lining can be prevented. |
