Systems and methods for isolating condensate in a condensation particle counter
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Solution Overview
Problem
Condensate migration in condensation particle counters poses a challenge during transportation and handling, particularly with viscous and wettable condensates like glycerol, which can damage sensitive components and interfere with flow control devices, necessitating the development of systems to prevent condensate migration.
Innovation Solution
The implementation of a condensation particle counter system with automatic valve mechanisms that isolate sensitive components from condensate reservoirs and saturators when the system is not in use or powered off, using pinch valves to prevent condensate migration during transportation, allowing for safe shipping without draining the condensate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the condensation particle counter is transported or moved, then the system can be relocated to different destinations, but condensate migrates from components designed to contain it to sensitive components that may be damaged
Solution Approach 1:
The system is divided into separate functional zones: a condensate-containing zone (reservoir, saturator, condenser) and a sensitive component zone (optics, flow control devices). Isolation valves create segmentations in the fluid pathway, allowing the condensate zone to be physically separated from sensitive components during transport, preventing condensate migration while maintaining system mobility.
Solution Approach 2:
Isolation valves act as intermediary elements between the condensate-containing components and sensitive components. These valves serve as controllable barriers that can be closed to prevent direct fluid communication, allowing the system to transition between operational mode (valves open) and transport mode (valves closed), thus protecting sensitive components from condensate during relocation.
2Stability of the object's composition
If the saturator and condenser are positioned to prevent condensate migration while upright, then condensate stays in designated components, but the system cannot be transported in non-upright positions
Solution Approach 1:
The isolation valves provide dynamic control over fluid pathways, allowing the system to adapt to different operational states. When the system is upright and operational, valves remain open for normal function. When transportation occurs in any orientation, valves close to dynamically reconfigure the fluid system, preventing condensate migration regardless of gravitational orientation, thus providing transportation orientation flexibility.
Solution Approach 2:
The isolation valves are positioned and configured to preemptively prevent condensate migration before transportation begins. By closing the valves prior to moving the system in non-upright positions, the patent applies preliminary protective action that counteracts the potential harmful effect of gravity-driven condensate flow, allowing flexible transportation orientations without risking component damage.
3Ease of operation
If viscous and wettable condensate (e.g., glycerol) is used, then certain operational advantages are achieved, but the condensate has higher propensity to be retained and migrate to different device components
Solution Approach 1:
The isolation valves extract or remove the potential migration pathway for viscous condensate from the system architecture. By placing controllable barriers at strategic points in the fluid pathway, the system prevents the inherently migratory viscous condensate from reaching sensitive components, allowing the use of operationally advantageous viscous fluids like glycerol without suffering from their migration problems.
4Quantity of substance
If the condensate reservoir is drained before shipping, then most condensate is removed, but residual condensate remains and can still migrate during transportation
Solution Approach 1:
The isolation valves provide preliminary protection by creating a barrier before condensate migration can occur. Even if draining is performed incompletely or not at all, the closed valves preemptively prevent any residual condensate from migrating to sensitive components during transport, eliminating the need for complete draining and associated operational interruptions.
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
This solution effectively prevents condensate migration, protecting sensitive components and enabling the safe transportation of condensation particle counters with condensate in situ, eliminating the need for pre-draining and ensuring the purity of the working fluid by isolating it from external contaminants.
Implementation Method 1
The saturator is in fluid communication with a condensate reservoir which provides condensate to the saturator, where it is heated to ensure it is sufficiently in the vapor phase
Implementation Method 2
The sample stream, now mixed with condensate vapor, then flows into a condenser which cools the sample stream, causing the condensate to condense as a liquid around particles contained in the sample stream
Data Source
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AI summary
The systems and methods provided herein relate generally to the prevention of migration of condensate in a condensation particle counter between components designed to handle condensate (e.g. saturator, condenser, condensate reservoir) and components which may be damaged by the condensate (e.g. detection and flow control devices).