Automated Analyzer Valve Blockage Prevention via Gas Stirring
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Solution Overview
Problem
Automated analyzers used in process metrology face maintenance challenges due to blockages in valves and fluid lines caused by particle loads in sample liquids, which can distort analytical results and require frequent servicing.
Innovation Solution
Introducing a gas or gas mixture into the analyzer's chamber to stir up particles in the liquid, preventing them from settling and causing blockages during drainage, which is managed through controlled valve operations and pumping sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If particles are allowed to settle in the chamber during drainage, then drainage efficiency is improved, but blockages occur in valves and fluid lines
Solution Approach 1:
The patent applies periodic action by introducing gas in alternating phases with liquid drainage. The gas is introduced first to stir particles, then liquid is drained, creating a periodic cycle that prevents particle settlement and valve blockage while maintaining efficient drainage operation.
Solution Approach 2:
The patent uses pneumatics by introducing gas (air) into the chamber to stir up particles before drainage. This pneumatic action suspends particles in the liquid, preventing them from settling and causing blockages in valves and fluid lines during the subsequent drainage phase.
2Reliability
If gas is introduced to stir particles, then particle settlement is prevented, but energy consumption increases
Solution Approach 1:
The patent applies partial action by introducing gas only for the specific purpose of stirring particles during drainage operations, rather than continuous stirring. The gas introduction is limited to the necessary duration and intensity to prevent blockages, avoiding excessive energy consumption while maintaining reliability.
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
Significantly reduces the risk of blockages in valves and fluid lines, ensuring continuous operation and accurate analysis by maintaining fluid flow and preventing particle settlement in narrow sections.
Implementation Method 1
Introducing a gas or gas mixture, in particular air, into the chamber, in particular through the liquid present in the chamber, so that the particles in the liquid are stirred up
Data Source
AI summary
The disclosure concerns a method for operating an automated analyzer, including transporting a liquid containing a plurality of particles into a chamber, such as a reactor chamber and/or measuring cell chamber of the analyzer, introducing a gas or gas mixture, for example, air into the chamber, such as through the liquid present in the chamber so that the particles in the liquid are stirred up, and subsequently draining at least part of the liquid from the chamber through a fluid line ending in the chamber and an open valve arranged in the fluid line.