CANISTER ASSEMBLY WITH PROTECTED CAP AND BOOSTER EXPLOSIVE

DE602021031158T2Active Publication Date: 2025-05-21DYNO NOBEL INC
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Patent Information

Application Number
DE602021031158
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-02-19
Filing Date
2021-02-16
Publication Date
2025-05-21
Estimated Expiration
2041-02-16

AI Technical Summary

Technical Problem

Cast booster explosives are vulnerable to damage from shockwaves generated by adjacent detonations, which can prevent downstream boreholes from initiating, leading to inefficient blasting and safety hazards due to damaged detonators in electronic delay detonators.

Method used

A canister assembly with a cap well protected by a shock-absorbing barrier, comprising a protective sleeve that encloses most of the cap well, leaving only the active section exposed to facilitate detonation, and an annular air space or snugly fitted sleeve to reduce shockwave transmission, using materials like metal, plastic, or closed cell synthetic polymeric foam.

Benefits of technology

The solution effectively reduces the risk of detonator damage from shockwaves, enhancing the reliability of blasting systems by ensuring proper initiation of downstream boreholes and maintaining efficiency.

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Abstract

A booster explosive (10) comprises a canister body (12) within which is a cap well (20) having disposed therein a detonator (24). A protective sleeve (28) encloses the cap well (20) except for that portion of the cap well, the active portion (20d), which encloses the ex- plosive end section (24a) of detonator (24). The protective sleeve serves to attenuate the force of shock waves from nearby prior explosions acting on the detonator (24). An annular air space (32) may be provided between protective sleeve (28) and cap well (20) to further attenuate the force of such shock waves. Attenuation of the shock waves reduces the likeli- hood of damage to detonators (24) by prior nearby explosions.
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