EXPLOSIVE CURRENT CIRCUIT BREAKER Russian patent published in 2016 - IPC H01H39/00 

FIELD: blasting operations.

SUBSTANCE: invention relates to explosively formed fuse opening switches containing breakable conductor, made in form of foil, on opposite sides of which explosive charge and main stops are located, arranged on breakable conductor in form of periodic structure with preset step b₁=(d₁+s₁), where d₁ is main support cross-section maximum horizontal size, s₁ is distance between adjacent main supports. At that, ratios d₁ ≤ S₁ ≤ 2.5 d₁, h₁ ≤ d₁ are met, where h₁ is main stop maximum vertical cross-section size. At that, main stops are made from material with acoustic stiffness of Bar·c·m^-1 and adjoin substrate from dielectric material. On explosive side in front of main supports additional stops are arranged, which are as well as main ones, have periodic structure with pitch of b₂, equal to main stops pitch, and are made from material with acoustic stiffness of Bar·c·m^-1. At that, m projection of each additional stop on foil lies within main stop projection opposite to it.

EFFECT: technical result is reduction of time of magnetic explosion generator (MEG) circuit opening and faster operation of circuit breaker, as well as increased power of current pulse generated by foil stretching and destruction rate increasing.

8 cl, 4 dwg