Pyrotechnic Cleaning Cartridge With Movable Detonator Isolation
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Solution Overview
Problem
Existing pyrotechnic cartridges for cleaning installations lack sufficient mechanical strength and safety measures against accidental detonation, particularly during transport and use, posing risks due to sparks or static electricity.
Innovation Solution
A cartridge design with a housing that moves between safe and primed positions, incorporating a detonator with enhanced electrical current resistance and safety features like synthetic encapsulation, and a blocking mechanism to prevent inadvertent priming, along with a casing made of thermoplastic material for reduced risk of contamination and misfires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pyrotechnic cartridges are used for cleaning installations, then cleaning effectiveness is improved, but safety against accidental detonation deteriorates due to sparks or static electricity during transport and use
Solution Approach 1:
The cartridge is divided into separate compartments: the pyrotechnic mixture in the casing and the detonator in the movable housing. This segmentation allows the explosive material to be transported safely isolated from ignition sources, while enabling controlled initiation when needed.
Solution Approach 2:
The pyrotechnic mixture is prepared and sealed in the casing in advance, but the detonator remains isolated in the housing until the moment of use. The movable housing can be positioned to engage with the mixture only when required, preventing accidental detonation during transport and storage.
2Speed
If the detonator is always in contact with the pyrotechnical mixture for quick initiation, then operational speed is improved, but safety against inadvertent priming deteriorates
Solution Approach 1:
The housing containing the detonator is designed to be movable between a retracted safe position and an extended primed position. This dynamic configuration allows the system to transition from a safe transport state to an operational state only when intentionally activated, preventing accidental priming while enabling rapid initiation when needed.
Solution Approach 2:
The movable housing acts as an intermediary mechanism between the detonator and the pyrotechnic mixture. It controls their interaction by allowing the detonator to engage with the mixture only when deliberately positioned, providing a mechanical safeguard against inadvertent contact and priming.
3Ease of manufacture
If traditional materials are used for the casing, then manufacturing simplicity is maintained, but contamination risk and misfire risk increase
Solution Approach 1:
The casing is made from thermoplastic material, which combines ease of manufacturing through molding with superior properties: reduced static electricity generation, lower contamination risk, and improved safety against misfires. This composite material solution maintains manufacturing simplicity while eliminating the harmful effects associated with traditional materials.
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
Enhances safety by minimizing accidental detonation risks and contamination, allowing controlled priming and deflagration initiation, thus improving operational safety and efficiency.
Implementation Method 1
comprising an electrical detonator for initiating deflagration of the mixture
Implementation Method 2
electrical detonator for initiating deflagration of the mixture
Data Source
Figure 1~3
Figure 4A~5B
AI summary
The invention relates to a cartridge (1) for cleaning installations, such as incinerators, heat exchangers, flue gas channels, and silos, comprising a casing, e.g. a sleeve (2), containing a pyrotechnical mixture (5) and/or components of a pyrotechnical mixture and comprising an electrical detonator (3) for initiating deflagration of the mixture. The cartridge further comprises a housing (4) which accommodates the detonator (3) and which housing (4) is attached to the casing (3) and movable between a first position, wherein the detonator (3) is isolated from the pyrotechnical mixture (5), and a second position, wherein the detonator (3) extends in the pyrotechnical mixture (5).