| 摘要 |
PURPOSE:To suppress electric discharge from the connecting part, and to prevent water leakage of a cooling water pipe or erroneous operation of an electronic circuit by a method wherein a cap nut to connect the cooling water pipes with each other is made to have a radius of curvature the same or more with the outside diameter of the cooling water pipe. CONSTITUTION:The cooling water pipe 6 is connected to a circulating pipe 8 in a thyristor valve at a lower part electrode 5 with the nut 9, the nut 9 is made to have a curvature on the cooling water pipe 6 side, and the tightening part thereof is remained on the circulating pipe 8 side. Accordingly the lower part electrode 5 and the cap nut 9 have the same electric potential and moreover have high electric potential, and because electric field outside of the cap nut 9 is mitigated and electric discharge from the part thereof is suppressed, water leakage due to deterioration to be caused by electric discharge is not generated, and the cause to make the electronic circuit to operate erroneously can be eliminated. |
