Pressure Exchanger Flow Control for Particle-Laden Fluid Pressurization
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Solution Overview
Problem
Conventional systems using pumps to handle fluids with solid particles and high viscosity suffer from damage, reduced efficiency, increased maintenance, and shorter lifespan due to abrasion and erosion, leading to inefficiencies and higher costs.
Innovation Solution
A pressure exchanger system that exchanges pressure between two fluids, using a high-pressure, particle-free fluid to raise the pressure of a low-pressure, particle-laden fluid, reducing wear on components and requiring fewer pumps, thus minimizing maintenance and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional pumps are used to handle fluids with solid particles and high viscosity, then the fluid can be pressurized, but the pump components suffer from abrasion and erosion leading to reduced efficiency and shorter lifespan
Solution Approach 1:
A second fluid is introduced as an intermediary medium to perform the actual pressurization work. This second fluid interacts with the pump components instead of the abrasive first fluid, protecting the pump while still achieving the desired pressurization of the first fluid through fluid coupling.
Solution Approach 2:
The invention uses hydraulic principles by introducing a second fluid that couples with the first fluid through fluid interaction. The pump pressurizes the second fluid, which then transfers pressure to the first fluid, utilizing hydraulic energy transfer to avoid direct mechanical contact between the pump and abrasive particles.
2Reliability
If specialized pumps with hardened materials and large clearances are used to reduce abrasion damage, then component lifespan is extended, but system efficiency decreases and multiple pumps are required in series
Solution Approach 1:
The second fluid serves as a protective intermediary that allows the use of standard pump designs without hardened materials or large clearances. By preventing direct contact between the pump and abrasive first fluid, the system maintains high efficiency with single-stage pumping while extending component lifespan.
Solution Approach 2:
The invention replaces direct mechanical contact between the pump and abrasive fluid with a fluid-mediated pressure transfer system. This substitution eliminates the need for mechanically robust pump designs with hardened materials, allowing the use of efficient standard pumps without sacrificing reliability.
3Stress or pressure
If multiple pumps are used in series to achieve desired pressure head, then the pressure requirement is met, but system complexity and maintenance requirements increase
Solution Approach 1:
The second fluid acts as a mediator that enables a single pump to achieve the pressure head of multiple pumps in series. By transferring pressure through fluid coupling rather than direct mechanical action, the system achieves equivalent pressure multiplication with simpler single-stage architecture.
Solution Approach 2:
The invention applies hydraulic energy transfer principles where the pump pressurizes the second fluid, which then transfers this pressure to the first fluid. This hydraulic coupling mechanism allows single-stage pressurization to achieve the same effect as multi-stage mechanical pumping systems.
4Power
If pumps directly handle particle-laden fluids, then the fluid can be pressurized, but maintenance frequency increases due to wear and damage
Solution Approach 1:
The second fluid serves as a protective barrier and intermediary medium between the pump and the particle-laden first fluid. The pump only handles the clean second fluid, eliminating wear from abrasive particles, while still achieving pressurization of the first fluid through fluid-to-fluid pressure transfer.
Solution Approach 2:
The invention replaces direct mechanical handling of particle-laden fluid with a fluid-mediated pressure transfer system. This substitution eliminates mechanical wear from particle contact, dramatically reducing maintenance frequency and downtime while maintaining the pressurization function.
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 system increases efficiency, reduces component wear, decreases downtime, and extends the life of system components, allowing for a wider range of pump selection and reduced maintenance, while maintaining high performance in applications like fracking, desalination, and refrigeration.
Implementation Method 1
The PX is configured to exchange pressure between the first fluid and the second fluid
Data Source
AI summary
A system includes a pressure exchanger (PX) configured to receive a first fluid via a first inlet and a second fluid via a second inlet. The PX is to exchange pressure between the first fluid and the second fluid and provide the first fluid at a first outlet and the second fluid at a second outlet. The system further includes a first sensor to provide first sensor data associated with the first fluid prior to the first fluid entering the first inlet and a second sensor to provide second sensor data associated with the second fluid prior to the second fluid entering the second inlet. The system further includes a controller to receive user input and cause a first adjustment of the flowrate of the first fluid into the first inlet and cause a second adjustment of the flowrate of the second fluid into the second inlet.