High-voltage transmission joint device for vacuum instrument

The invention provides a high-voltage transmission joint device for a vacuum instrument. The high-voltage transmission joint device comprises a copper electrode, a first sealing ring, a cavity external insulation sealing element, a second sealing ring, a cavity internal insulation sealing element and a nut, a through hole is formed in the center of the insulating sealing piece in the cavity, and the copper electrode penetrates through the middle through hole; inner grooves larger than the first sealing ring and the second sealing ring in size are formed in the two ends of the cavity outer insulation sealing piece, the first sealing ring is used for insulation sealing between the copper electrode and the cavity outer insulation sealing piece, and the second sealing ring is used for insulation sealing between the cavity and the cavity outer insulation sealing piece. And the insulating sealing element in the cavity is used for insulating connection between the cavity and the nut. 本发明提供了一种用于真空仪器的高压电传输接头装置，包括铜电极，第