Primer-free electronic detonator and control method thereof

Abstract

The invention discloses a primer-free electronic detonator and a control method of the primer-free electronic detonator. The primer-free electronic detonator comprises a control circuit, a high voltage conversion device, a semiconductor initiating unit and a main blasting charge, the control circuit, the high voltage conversion device, the semiconductor initiating unit and the main blasting chargeare encapsulated in a detonator shell, and the high voltage conversion device comprises a voltage increasing device, a high voltage energy storage device and a high voltage detonation circuit sequentially connected electrically; the high voltage conversion device is used to convert a low voltage communication instruction except an initiating instruction into high voltage and stores the high voltage, the initiating instruction is converted into the high voltage, and the high voltage is transmitted to the semiconductor initiating unit; the semiconductor initiating unit is stimulated by the instantaneous high current to directly produce a plasma; the plasma directly bombards the main blasting charge to detonate; on one hand, the use of an explosive is avoided, so that the safety of a systemis improved, and the acting precision of the detonator is improved; on the other hand, the cost and the size of the system are reduced, and the primer-free electronic detonator can replace the existing electric detonator and the electronic detonator in batches.

Description

technical field [0001] The invention relates to the detonation technology of pyrotechnics, in particular to an electronic detonator without priming charge and a control method thereof. Background technique [0002] The existing electronic detonator adopts a classic electric detonator structure, and its explosion sequence adopts the form of primary pyrotechnic product-priming charge-boosting charge-main charge explosive. Due to the use of sensitive primary explosives, this explosion sequence brings safety hazards to the detonator during production, transportation and use. In the above-mentioned process, the priming charge is extremely susceptible to the influence of the electromagnetic environment, temperature environment and mechanical environment, and accidental explosion occurs, resulting in loss of personnel and property. In addition, the consistency between the production and assembly process of the priming charge is poor, resulting in low precision of the delay of the ...

AI Technical Summary

Problems solved by technology

The shock plate detonator better solves the safety hazards caused by the priming charge, and also improves the accuracy of the detonator’s action, but its output voltage is as high as hundreds of volts or even thousands of volts, resulting in complex system structure, large volume, high cost, and multi-purpose Based on a high-value platform, it is difficult to replace the existing electric detonators and electronic detonators in batches

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