Aerosol Fire Suppression Explosion Venting Mechanism
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Solution Overview
Problem
Existing aerosol fire suppression apparatuses lack effective measures to prevent injuries caused by powerful recoil forces generated during deflagration, which can lead to serious accidents, including the cylinder body exploding or the inner cylinder assembly flying outwards at high speeds.
Innovation Solution
An explosion-venting method for aerosol fire suppression apparatuses, incorporating a friction layer, connecting rod, guiding unit, clamping claw, buffering component, and flanging, which limits the displacement of the connecting rod and cylinder cover assembly to dissipate kinetic energy through friction and elastic buffering, preventing excessive recoil and explosion risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pyrotechnic compound grain is used as the main charge to generate high-temperature aerosols for fire suppression, then the fire suppression effectiveness is improved, but the risk of sudden pressure rise and deflagration increases due to coating defects, grain cracks, or gas channel blockages
Solution Approach 1:
The patent applies beforehand cushioning by installing an explosion-venting device before deflagration can occur. The device includes a venting channel with a venting area of 1-5 cm² that opens to the external environment, allowing pressure to be released safely before it can cause deflagration. This preventive measure directly addresses the harmful effect of sudden pressure rise while maintaining the fire suppression function.
2Power
If the cylinder body is designed to contain high-pressure gas for aerosol generation, then the aerosol discharge capability is improved, but the recoil force generated during deflagration increases, causing injury risk to operators
Solution Approach 1:
The patent applies the taking out principle by extracting the harmful high-pressure gas from the closed cylinder body through the explosion-venting device. The venting channel provides a controlled escape path for the gas, removing the source of recoil force before it can act on the cylinder body and cause injury to operators.
3Stress or pressure
If the cylinder body is sealed to maintain pressure for aerosol generation, then the aerosol pressure is improved, but the hot air stream accumulation during deflagration increases, leading to cylinder explosion risk
Solution Approach 1:
The patent applies beforehand cushioning by providing a venting channel that prevents hot air stream accumulation before it can reach dangerous levels. The venting area of 1-5 cm² ensures that pressure can be released in advance, cushioning against the potential cylinder explosion while maintaining normal aerosol generation pressure.
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
Effectively consumes and disperses the kinetic energy generated by deflagration, preventing operator injury and reducing the risk of the cylinder cover assembly flying outwards, thereby ensuring safe pressure ventilation and preventing cylinder explosions.
Implementation Method 1
the friction layer (7) generates a frictional resistance at the moment because an elastic effect of the friction layer acts on the connecting rod (5) and the outer wall of the cylinder body (3)
Implementation Method 2
the buffering component (11) is to buffer a collision force between the extremity of the connecting rod (5) and the front end of the cylinder body (3) of the aerosol fire suppression apparatus (1), and consume a part of motion kinetic energy with an elastic effect of itself
Data Source
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AI summary
An explosion-venting method for an aerosol fire suppression apparatus, comprising the following steps: 1) when the aerosol fire suppression apparatus explodes, an explosion-venting device matching the aerosol fire suppression apparatus generating a limited displacement along a direction that a hot air stream of the aerosol fire suppression apparatus is jetting towards; 2) when an extremity of the explosion-venting device reaches an edge of the aerosol fire suppression apparatus, being limited, the explosion-venting apparatus stops the displacement along the direction that the hot air stream of the aerosol fire suppression apparatus is jetting towards, thus achieving for the aerosol fire suppression apparatus the effects of explosion-venting and reduced recoil force. The explosion-venting method, within a limited displacement of the explosion-venting device, completely consumes powerful kinetic energy of a relative motion between a cylinder body and a cylinder cover assembly generated by the explosion, thus allowing smooth ventilation of the powerful explosion, thereby preventing a powerful recoil force generated thereby from injuring an operator, while at the same time preventing the cylinder cover a from flying outwards at a great speed and causing accidents resulting in injuries and damages.