Nitrogen Generator Compressor Power Control via Pressure Feedback
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Solution Overview
Problem
The maintenance of compressors in nitrogen gas generators is unnecessarily frequent when the generators are not in use, leading to shortened maintenance intervals.
Innovation Solution
A power supply control device that includes a pressure gauge and flowmeter to monitor and control the power supply to the compressor, ensuring it operates only when necessary, thereby prolonging the time between maintenance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the nitrogen gas generator is operated at the time of non-use of nitrogen gas, then the compressor runs continuously, but the time until maintenance is required is shortened
Solution Approach 1:
The control unit receives feedback signals from the pressure gauge and flowmeter to monitor the actual nitrogen gas supply status. When the pressure gauge indicates sufficient pressure or the flowmeter detects no flow (indicating non-use conditions), the control unit automatically shuts off power to the compressor, preventing unnecessary operation and extending maintenance intervals.
Solution Approach 2:
The system uses its own measurement devices (pressure gauge and flowmeter) to automatically determine when maintenance is needed, eliminating the need for external monitoring. The compressor serves itself by shutting down when the system detects non-use conditions through its built-in sensors.
2Reliability
If the compressor operates continuously to ensure nitrogen gas availability, then gas supply reliability is improved, but energy consumption increases
Solution Approach 1:
The compressor operation transitions from static continuous running to dynamic on-demand operation. The control unit dynamically adjusts the compressor state based on real-time feedback from pressure and flow measurements, allowing the system to maintain reliability while optimizing energy consumption by running only when necessary.
Solution Approach 2:
The system changes the operational parameters of the compressor from continuous operation to intermittent operation based on measured pressure and flow parameters. When pressure reaches a sufficient level or flow is detected as zero, the control unit changes the power supply state, thereby reducing energy consumption while maintaining gas supply reliability.
Data Source
AI summary
A power supply control device of a nitrogen gas generator includes: a pipe having a nitrogen gas inlet for receiving input of nitrogen gas from a nitrogen gas generator that compresses air by a compressor to separate the nitrogen gas from the air, and a nitrogen gas outlet for outputting, to outside, the nitrogen gas received by the nitrogen gas inlet; a pressure gauge that measures pressure inside the pipe; a flowmeter that measures a flow rate of the nitrogen gas flowing inside the pipe; and a control unit that controls supply of power to the compressor and shut-off of the supply of the power in accordance with a measurement result of at least one of the pressure gauge and the flowmeter.