Porous Phase Separator for Cavitation-Free Pump Feed
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Solution Overview
Problem
Conventional flow systems face damage due to gas/vapor presence and large particles in the pump suction side, leading to cavitation and system failure, as existing technologies fail to effectively prevent gas/vapor flow and capture solid particles.
Innovation Solution
A multifunctional phase separation apparatus utilizing a porous tube and phase separator creates a capillary force barrier to prevent vapor/gas flow and capture solid particles, storing non-condensable gas in a reservoir and recirculating the liquid phase to ensure a gas-free feed to the pump, minimizing pressure drop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional flow system is used without a gas/vapor barrier, then the system structure is simple, but gas/vapor enters the pump suction side causing cavitation and pump damage
Solution Approach 1:
The flow system is segmented into distinct functional zones: a gas/vapor barrier section with porous media, a liquid collection section with modules, and a reservoir section. This segmentation allows each component to address specific problems (gas barrier, liquid collection, particle filtration) independently, protecting the pump while maintaining manageable system complexity
Solution Approach 2:
A gas/vapor barrier comprising porous media is introduced as an intermediary component between the heat exchanger and the pump. This barrier selectively allows liquid to pass while blocking gas/vapor, preventing cavitation without requiring complete system redesign
2Reliability
If a gas/vapor barrier is introduced to protect the pump, then pump reliability improves, but pressure drop increases
Solution Approach 1:
The porous media in the gas/vapor barrier is designed with specific local properties (porosity, pore size distribution) that allow liquid to pass through with minimal resistance while effectively blocking gas/vapor. This localized optimization reduces pressure drop while maintaining protective function
Solution Approach 2:
The system dynamically adapts to two-phase flow conditions by allowing the porous media to selectively transmit liquid while retarding gas/vapor based on flow conditions. The liquid collection modules dynamically collect and redirect liquid to maintain steady flow to the pump, minimizing pressure fluctuations
3Reliability
If porous media is used to block particles, then particle capture improves, but flow resistance increases
Solution Approach 1:
Porous media with controlled pore size and distribution is used in the gas/vapor barrier to achieve particle filtration. The porous structure captures particles through physical blocking while maintaining sufficient open area to limit flow resistance, balancing filtration effectiveness with flow efficiency
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
The apparatus effectively prevents vapor/gas and solid particle entry into the pump suction side, reducing the risk of cavitation and damage, while maintaining a liquid-filled feedline with minimal pressure drop penalty.
Implementation Method 1
The multifunctional phase separation apparatus utilizes capillary force created by a porous media and a liquid phase of a working fluid to form a barrier to prevent any vapor/gas flow into the pump suction side
Implementation Method 2
The porous media can also serve as a filter to block particles
Implementation Method 3
The multifunctional phase separation apparatus utilizes capillary force created by a porous media and a liquid phase of a working fluid to form a barrier
Data Source
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AI summary
A multifunctional phase separation apparatus (100) is provided herein. The multifunctional phase separation apparatus includes a porous tube (110), a phase separator (120), and liquid collecting modules (130). The porous tube (110) includes a first entry port and an exit port. The phase separator (120) includes a second entry port. The multifunctional phase separation apparatus also includes a reservoir (140). The reservoir (140) is on a first end of the liquid collecting modules (130).