Rotating Detonator Orientation for Safe Explosive Train Initiation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing explosive train initiation systems face challenges in safely and efficiently arming explosives for detonation, particularly in preventing accidental initiation and ensuring reliable detonation without physical interaction, due to limitations in existing technologies such as physical isolation, deflagration to detonation devices, and misaligned or blocked systems.
Innovation Solution
A device with an electronic switch and orientation mechanism that allows for remote arming by transitioning from an out-of-line to an in-line orientation upon signal receipt, using a barrier member and biasing mechanism to ensure safe arming just prior to detonation, enabling direct detonation of the explosive train without physical manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a barrier or blockage is positioned to interrupt the explosive train, then safety is improved by preventing accidental detonation, but device complexity increases due to the need for additional arming mechanisms
Solution Approach 1:
The patent extracts the barrier function from a separate physical component and integrates it into the detonator assembly itself. The detonator housing serves as the barrier when in the safe position, eliminating the need for separate blocking mechanisms while maintaining safety functionality.
Solution Approach 2:
The detonator assembly is designed to be rotatable between a safe position (where the detonation path is blocked by the housing) and a fire position (where the path is aligned). This dynamic repositioning allows the same component to provide both safety blocking and detonation functionality.
2Reliability
If an operator physically connects the detonator to the explosive train, then safety is improved by ensuring complete control, but ease of operation deteriorates due to required physical access and handling
Solution Approach 1:
The patent replaces the need for manual physical connection with an automated mechanical system. The detonator assembly rotates automatically to align the detonation path with the explosive train, eliminating the need for operators to physically handle and connect components.
Solution Approach 2:
The system performs the arming function automatically through rotation of the detonator assembly. The mechanism self-arms by aligning its internal components without requiring external manual intervention, combining safety with operational simplicity.
3Reliability
If the explosive train is kept incomplete until final usage, then safety is improved by preventing premature detonation, but productivity deteriorates due to delayed arming and positioning requirements
Solution Approach 1:
The explosive train is segmented into separate components: the detonator assembly (containing the primary explosive and detonation path) and the secondary explosive train. These segments can be handled and positioned independently, with the detonator assembly serving as both the safety barrier and the initiation source.
Solution Approach 2:
The detonator assembly can be prepared and positioned in advance in a safe state (with the detonation path blocked). The actual arming action (rotation to align the path) occurs immediately before detonation, allowing preliminary preparation without compromising safety or delaying the final operation.
4Reliability
If deflagration to detonation devices are used to detonate secondary explosives, then reliability is improved by direct detonation, but device complexity and cost increase due to specialized electrical systems
Solution Approach 1:
The patent uses an intermediary mechanical alignment mechanism (rotation of the detonator assembly) to enable direct detonation of secondary explosives. This mechanical intermediary replaces complex electrical deflagration-to-detonation systems while achieving the same reliable detonation result.
Data Source
AI summary
A detonator device includes a mechanism for shifting between an out-of-line orientation, wherein initiation of a detonator does not result in initiation of the explosive train, and an in-line orientation, wherein initiation of the detonator results in initiation of the explosive train.