Nitrogen Generator Bypass for Fast Sprinkler Pipe Pressurization
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Solution Overview
Problem
Existing nitrogen generation systems face challenges in generating sufficient nitrogen to fill sprinkler system piping to a target pressure within a specified duration due to the inefficiencies in nitrogen production from compressed air.
Innovation Solution
An automatic bypass mechanism is introduced to detect pressure conditions and bypass the nitrogen generator, allowing direct delivery of compressed air from the air source to the piping when target pressure is near, ensuring timely filling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If nitrogen generator is used to produce nitrogen from compressed air, then nitrogen is generated for filling sprinkler system piping, but the filling process takes too long to reach target pressure within specified duration
Solution Approach 1:
The system segments the gas delivery process into two distinct phases: an initial rapid filling phase using compressed air directly from the air source, and a subsequent nitrogen generation phase using the nitrogen generator. This segmentation allows the system to achieve target pressure within the specified duration by using the faster compressed air delivery method first, then transitioning to nitrogen production for maintenance of pressure levels.
Solution Approach 2:
The system dynamically switches between different gas sources based on real-time pressure conditions. A controller monitors the pressure in the sprinkler system piping and automatically transitions from compressed air delivery to nitrogen generator operation when target pressure is approached, optimizing both filling speed and operational efficiency throughout the process.
2Loss of time
If compressed air is delivered directly to piping, then filling speed increases to meet target pressure within duration, but nitrogen generation capability is lost
Solution Approach 1:
The system employs periodic action by alternating between compressed air delivery and nitrogen generator operation based on pressure thresholds. The controller periodically monitors pressure levels and switches gas sources accordingly: using compressed air when pressure is below target and transitioning to nitrogen generator when target pressure is reached or approached, ensuring both timely filling and adequate nitrogen supply.
Solution Approach 2:
The system incorporates feedback through a controller that continuously monitors pressure in the sprinkler system piping and adjusts gas delivery accordingly. The controller receives pressure feedback and automatically transitions between compressed air and nitrogen generator based on whether target pressure is being approached, optimizing the balance between filling speed and nitrogen generation.
3Quantity of substance
If nitrogen generator operates continuously, then sufficient nitrogen is produced, but system complexity and operational overhead increase
Solution Approach 1:
The system extracts the nitrogen generation function from continuous operation and activates it only when needed. By separating the compressed air delivery system from the nitrogen generator and using a controller to manage transitions, the system takes out the complexity of continuous nitrogen generation and activates it only when target pressure is approached or when nitrogen is specifically required.
Solution Approach 2:
The system provides self-service through automatic controller management of the gas delivery process. The controller autonomously monitors pressure conditions and switches between compressed air and nitrogen generator without requiring manual intervention, reducing operational overhead while maintaining adequate nitrogen supply when needed.
Data Source
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AI summary
A nitrogen generation system includes a nitrogen generator and a bypass device. The nitrogen generator receives air and outputs nitrogen using the air along a first flow path to an outlet. The bypass device is coupled with an air source and the nitrogen generator. The bypass device controls flow of air from the air source to flow along the first path through the nitrogen generator or along a second path to the outlet based on a pressure condition.