Solvent Supply Pump Phase Control for Stable Composition
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Solution Overview
Problem
Existing solvent supply systems for composite solvents face issues with unfavourable frequency and phase relations between pump units, leading to composition instabilities, pressure fluctuations, and reduced accuracy in solvent delivery, affecting measurement quality in applications like liquid chromatography.
Innovation Solution
A solvent supply system with coordinated operation of pump units, where a control unit adjusts the phase and frequency relations between pump units to prevent unfavourable phase and frequency correlations, ensuring stable and precise solvent composition through empirical determination and control of phase and frequency ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pump units operate periodically with high speed, then productivity is improved, but composition stability deteriorates due to frequency and phase relations
Solution Approach 1:
The control unit dynamically adjusts the operating parameters of pump units based on real-time conditions. By continuously monitoring and adapting pump operation, the system maintains stable solvent composition even at high delivery speeds, resolving the contradiction between productivity and composition stability.
Solution Approach 2:
The system changes operational parameters such as pump frequency and phase relationships to optimize performance. By adjusting these parameters dynamically, the control unit ensures that solvent composition remains stable while maintaining high productivity in the solvent delivery system.
2Productivity
If pump units operate with high frequency, then productivity is improved, but measurement precision deteriorates due to composition instabilities
Solution Approach 1:
The control unit implements a feedback mechanism that monitors solvent composition and pump operation in real-time. This feedback allows the system to maintain high delivery rates while ensuring composition stability, thereby preserving measurement precision in chromatography applications.
Solution Approach 2:
By dynamically adjusting pump operation based on real-time conditions, the system can operate at high frequencies for productivity while maintaining the composition stability required for accurate measurements.
3Productivity
If pump units operate with high speed, then productivity is improved, but pressure stability deteriorates due to phase relations
Solution Approach 1:
The control unit changes operational parameters including pump phase relationships to optimize system performance. By adjusting these parameters, the system achieves high solvent flow rates while maintaining pressure stability, resolving the contradiction between productivity and pressure stability.
Data Source
AI summary
A solvent supply system for supplying a composite includes a first supply path with a first pump unit, the first supply path being adapted for supplying a first solvent to a mixing unit, the first pump unit operating periodically, and a second supply path with a second pump unit, the second supply path being adapted for supplying a second solvent to the mixing unit, the second pump unit operating periodically. The mixing unit is adapted for mixing the first and the second solvent and for supplying a composite solvent. The solvent supply system further includes a control unit adapted for controlling operation of the first and the second pump unit.