Blow-Off Nozzle Cover for Weather Protection and Fast Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Fixed fire monitors with nozzles are often exposed to the elements, leading to degradation and questionable operational readiness due to UV radiation, rain, snow, and ice exposure, making them difficult to protect and maintain.
Innovation Solution
A protective covering system for nozzles comprising a cap, lock ring, clamp, and flexible collar that secures to the nozzle, disengaging under pressure to allow operation and reattaching post-use, with optional features like high visibility and UV resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nozzles are left uncovered in high overlooking positions, then they remain easily accessible and operational, but they are exposed to UV radiation, rain, snow, and ice which degrades equipment life and operational readiness
Solution Approach 1:
A protective cover is pre-installed on the nozzle before fire suppression is needed. The cover remains in place during normal conditions, protecting the nozzle from environmental degradation. When fire suppression is activated, the cover is automatically or manually removed to allow nozzle operation.
Solution Approach 2:
The protective cover is designed as a separate, removable component distinct from the nozzle itself. This segmentation allows the cover to provide protection during storage and non-operational periods while being easily removed or blown off when the nozzle needs to function, thus resolving the contradiction between protection and operational accessibility.
2Reliability
If protective covers are installed on nozzles, then nozzles are protected from environmental degradation, but it becomes difficult to remove the covering within the timeframe needed when fire suppression is required
Solution Approach 1:
The protective cover is designed with a blow-off mechanism that allows the operating pressure from the nozzle to automatically remove the cover itself. When the nozzle is activated and fluid flows through it, the pressure builds up and blows the cover off, eliminating the need for manual removal and ensuring rapid deployment within the required timeframe.
Solution Approach 2:
The cover transitions from a static protective state to a dynamic removal state based on operating conditions. During normal conditions, the cover remains stationary and protective. When the nozzle is activated, the dynamic pressure from the flowing fluid automatically removes the cover, ensuring both protection and rapid accessibility.
3Reliability
If a secure cover is used to protect the nozzle, then environmental protection is improved, but the cover may detach unintentionally during transport or handling
Solution Approach 1:
The cover attachment mechanism uses different engagement strengths at different locations and conditions. During transport and handling, the cover is securely attached to prevent accidental detachment. When the nozzle is activated and fluid pressure builds up, the local quality of the attachment changes to allow automatic blow-off, thus providing both secure transport and functional accessibility.
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 system effectively protects nozzles from environmental degradation while ensuring operational readiness by allowing activation and function without hindrance, with the cap detaching under pressure and reattaching post-use.
Implementation Method 1
the cap disengages from the second collar when a threshold pressure is exerted on a nozzle-facing surface of the cap from the discharge end
Data Source
AI summary
A covering is provided to protect nozzles from outdoor elements while allowing the nozzle to discharge fluid when needed. The covering includes a water way portion with a cap, a lock ring, a clamp, and a flexible collar, and may also include a body cover attached to the water way portion and extending over the body of the nozzle. The cap is configured to cover the water way of the nozzle and is attached such that when pressure is applied from the water way, the cap is released allowing water to flow from the nozzle. The cap may then be reattached to the collar when the nozzle is not is use. In this way, the cover protects and covers fire nozzles up to the moment that the equipment is activated.