| 摘要 |
The invention relates to means of electric blasting of charges of explosive substances with use of groups of connected in series electric detonators protected against wandering currents and side electric sources with voltage up to 500 V. In the capacitor blast device (VPK-1) as voltage transformer one uses a single stroke pulse generator on transistor, voltage divider and capacitor connected to primary windings of the transformer, and at the output – to secondary winding, intermediate capacitor, diode block and accumulating capacitor with a system of accumulation capacitor charge control signal, this is connected to electric blasting system through a switch thyristor controlled electrode of which is connected by circuit: start key – safety block. The invention makes it possible to increase efficiency of the device and reliability of control of electric blasting, to decrease overall dimensions and as result to increase safety of carrying blast operations in industrial conditions of mines and pits and at testing explosive substances at range conditions of basis and spent stocks of explosive materials. |
