Flexible Retention Mechanism for Detonator Extraction in Boosters
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Solution Overview
Problem
Existing explosive booster systems lack effective retention mechanisms for detonators, leading to malfunctions and safety risks during handling, especially when extracting the detonator, as current solutions are either complex, costly, or fail to ensure safe and easy removal.
Innovation Solution
A retention device with flexible holding means, such as a flange, is integrated into the booster, allowing the detonator to be securely retained and easily extracted by moving the flange between a blocking and open position without direct pressure, using a polymeric or metallic material that can deform elastically, and featuring centering ribs for guidance and protection from impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no retention system is used, then the booster structure is simple, but the detonator cannot be retained securely during handling
Solution Approach 1:
The retention device is divided into distinct functional segments: a retention element with blocking portions for securing the detonator, a flexible holding means for actuation, and opening portions for detonator insertion. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure manageable and not excessively complex.
2Reliability
If an O-ring retention system is used, then the detonator is retained inside the booster, but safe extraction becomes difficult and risky
Solution Approach 1:
The retention system transitions from a static retention structure to a dynamic system where the flexible holding means can be actuated to move the blocking portions. This allows the device to switch between two states: a closed retention state for secure holding and an open extraction state for safe removal, directly addressing the contradiction between retention reliability and extraction ease.
Solution Approach 2:
The flexible holding means acts as an intermediary mechanism between the operator and the blocking portions. Instead of directly manipulating the blocking portions or forcing the detonator out, the operator actuates the flexible holding means which then moves the blocking portions to release the detonator, making extraction safe and easy.
3Reliability
If a circular casing with hollow cylinder is used, then the detonator is retained by pressure, but extraction requires forceful pulling that is dangerous and may damage the booster
Solution Approach 1:
The system transitions from a static pressure-based retention to a dynamic mechanism where blocking portions can be actively moved. The flexible holding means allows the blocking portions to be displaced in a controlled manner, enabling safe extraction without forceful pulling that could damage the booster or create safety hazards.
4Ease of operation
If existing retention systems allow detonator removal, then extraction is possible, but the systems comprise many parts and are complex with high cost
Solution Approach 1:
The invention merges multiple functions into a single integrated retention device structure. The retention element, flexible holding means, blocking portions, and opening portions are combined into one cohesive component rather than using separate retention mechanisms. This consolidation achieves easy extraction functionality while minimizing the number of parts and reducing complexity and cost.
Solution Approach 2:
The retention device structure serves multiple functions: it retains the detonator during handling, allows safe extraction when needed, and provides structural integration with the booster. The flexible holding means and blocking portions work together to provide both retention and release capabilities within a single device, reducing the need for additional separate components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures safe and reliable retention and extraction of detonators, minimizing the risk of accidents and damage to the booster, while reducing the number of parts and material used, and allowing for easy handling without specialized tools.
Implementation Method 1
using a polymeric or metallic material that can deform elastically
Data Source
AI summary
The present invention relates to a device, a system and a method for retaining detonators in an explosive booster, particularly a retention device for retaining a detonator in the blind hole of a booster which allows the safe extraction thereof from the booster. The retention device comprises a flexible holding means that is movable between a blocking position retaining the detonator inside the blind hole and an open position which allows extracting the detonator from the blind hole.