Multi-section porcelain shell type vacuum arc-extinguishing chamber with outer shielding structure

The utility model discloses a multi-section porcelain shell type vacuum arc-extinguishing chamber with an outer shielding structure. The multi-section porcelain shell type vacuum arc-extinguishing chamber comprises a vacuum arc-extinguishing chamber body (1) and a shielding structure (2), the vacuum arc-extinguishing chamber body (1) is provided with a plurality of sections of porcelain shells, an inner shielding cover is arranged between every two adjacent sections of porcelain shells, and a shielding structure (2) protruding towards the outside of the porcelain shell is arranged in the circumferential direction of the root of each inner shielding cover. According to the utility model, under the condition that the diameter of the vacuum arc-extinguishing chamber is not obviously increased, the shielding structure is additionally arranged at the position where the inner shielding cover is welded between the porcelain shells, so that the effect of balancing an electric field outside the vacuum arc-extinguishin