摘要：This paper briefly describes the development process of sealing technology for vacuum interrupter, analyze the main characteristics of each stage and difficulties in realizing one-time sealing. Five design schemes are put forward to achieve complete one-time sealing, and the vacuum brazing tests were carried out according to the scheme. The test samples were dissected and analyzed, This article it contrastive analysis. The contact structure was chosen as the best structure for a complete one-time sealing, and made into a vacuum interrupter. The vacuum interrupter has passed the vacuum, the contact resistance, the power-frequency voltage-withstand test, BIL and the breaking test. It is proved that the one-time sealing of this structure can meet the requirements.
