Telescopic Fire Nozzle for Underbody Agent Delivery
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Solution Overview
Problem
Existing fire extinguishing systems for armored wheeled land vehicles are not sufficiently effective in combating fires underneath the vehicle, particularly in high ground clearance vehicles like SUVs, due to dispersion of extinguishing agents by wind or fire-induced air currents.
Innovation Solution
A telescopic fire extinguishing nozzle system that extends from the vehicle's underbody to deliver pressurized extinguishing agents directly to the ground, forming an extinguishing agent layer close to the fire source, with a fixed nozzle section and movable sections that extend upon receiving pressure, ensuring effective application without the need for active mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the extinguishing agent is released from close to the underbody of the wheeled land vehicle, then the device complexity is reduced, but the extinguishing agent is dispersed by wind or fire-induced air draw
Solution Approach 1:
The nozzle incorporates movable nozzle sections that can change position dynamically. The movable sections are configured to extend from the fixed nozzle section upon receiving pressurized extinguishing agent, transforming the nozzle from a static to a dynamic structure that adapts to operational requirements.
Solution Approach 2:
The movable nozzle sections are arranged to be nested within or adjacent to the fixed nozzle section in a telescopic configuration. When retracted, the movable sections are contained within the overall nozzle structure; when extended, they project forward to deliver the extinguishing agent closer to the ground.
2Object-affected harmful factors
If a telescopic nozzle arrangement is used to extend close to the ground, then wind interference is reduced, but the device complexity increases
Solution Approach 1:
The movable nozzle sections are configured to extend automatically upon receiving pressurized extinguishing agent. The pressure of the extinguishing agent itself provides the force needed to move the sections from retracted to extended position, eliminating the need for separate actuators or control mechanisms.
Solution Approach 2:
The extension of the movable nozzle sections is driven by the pressure of the extinguishing agent flowing through the nozzle. The pressurized fluid provides the mechanical force to move the telescopic sections, utilizing pneumatic or hydraulic principles to achieve the desired motion.
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 telescopic nozzle arrangement allows for highly effective fire fighting by directing the extinguishing agent close to the ground, reducing wind interference and enhancing the application's directness and effectiveness, even in high ground clearance vehicles.
Implementation Method 1
the plurality of movable nozzle sections are configured to extend from the fixed nozzle section in a telescoping manner upon receiving a pressurized extinguishing agent at the extinguishing agent connection
Implementation Method 2
the extinguishing agent may be released close to the ground and may spread along the ground for forming an extinguishing agent layer on the ground
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A fire extinguishing nozzle (20) for a fire extinguishing system (10) of a wheeled land vehicle (2) includes: a mounting portion (22) for mounting the fire extinguishing nozzle (20) to an outside portion of the wheeled land vehicle (2), in particular to an underbody (6) of the wheeled land vehicle (2); an extinguishing agent connection (24) for coupling the fire extinguishing nozzle (20) to an extinguishing agent reservoir (12) of the fire extinguishing system (10); a fixed nozzle section (30), fixedly mounted to the mounting portion (22); and a plurality of movable nozzle sections (40, 50, 60), movably arranged with respect to the fixed nozzle section (30); wherein the fixed nozzle section (30) and the plurality of movable nozzle sections (40, 50, 60) form a telescopic nozzle arrangement, wherein the plurality of movable nozzle sections (40, 50, 60) are configured to extend from the fixed nozzle section (30) in a telescoping manner upon receiving a pressurized extinguishing agent (18) at the extinguishing agent connection (24).