Pressure Exchanger Inserts for Abrasion Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pressure exchangers in high-pressure fluid systems, such as hydraulic fracturing and desalination, suffer from wear and efficiency loss due to abrasion and erosion caused by solid particles, leading to increased maintenance, downtime, and reduced yield.
Innovation Solution
Incorporating durable inserts made of materials like tungsten carbide or polycrystalline diamond between rotor and end cover ports to resist abrasion and erosion, reducing wear and extending the life of pressure exchanger components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure exchanger components (rotor, end covers) are made from standard materials, then the device complexity and manufacturing cost are kept low, but the components suffer from abrasion and erosion by solid particles, leading to wear and efficiency loss over time
Solution Approach 1:
The pressure exchanger components are segmented into base structure (rotor, end covers) and replaceable inserts. The inserts are separate components that can be independently replaced when worn, allowing the main structure to remain intact. This segmentation enables targeted replacement of wear-prone areas without replacing entire components, improving reliability while managing complexity through modular design.
Solution Approach 2:
The patent employs composite material strategy by combining standard base materials with specialized insert materials (e.g., ceramic, metal matrix composite, or hardened steel) that provide superior abrasion and erosion resistance. The inserts are made from materials specifically selected to resist solid particle damage, creating a composite structure that combines the advantages of different materials - structural integrity from the base and wear resistance from the inserts.
2Duration of action of stationary object
If durable inserts are installed in pressure exchanger components, then wear resistance and component life are improved, but the manufacturing complexity and initial cost increase
Solution Approach 1:
By segmenting the component into base structure and inserts, the manufacturing process is divided into separate steps: manufacturing the base component with recesses, and separately manufacturing the inserts. This allows each part to be optimized independently - the base can be made from easily manufactured standard materials, while inserts can be produced using specialized processes only where needed, reducing overall manufacturing complexity despite the added durability feature.
Solution Approach 2:
The inserts are designed as replaceable, potentially sacrificial components that protect the more expensive and critical base structure (rotor and end covers). When inserts wear out, they can be replaced without replacing the entire pressure exchanger assembly. This approach uses relatively simple, replaceable components to protect complex, expensive components, extending service life while managing manufacturing complexity.
3Productivity
If standard pressure exchanger components are used without inserts, then the device structure remains simple, but maintenance frequency increases due to wear from solid particles in high-pressure fluids
Solution Approach 1:
The segmented design with replaceable inserts allows for quick maintenance - when inserts wear out, only the inserts need to be replaced, not the entire pressure exchanger. This significantly reduces maintenance downtime compared to replacing entire components or assemblies, thereby improving system productivity and reducing loss of time during maintenance operations.
Solution Approach 2:
The durable inserts provide preliminary protection against wear, preventing the base components from degrading during normal operation. This preliminary protective action extends the time between maintenance intervals, allowing the system to operate at full productivity for longer periods before maintenance is required, thus reducing overall maintenance downtime and improving system yield.
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 inserts maintain high efficiency and reliability of pressure exchangers, decrease maintenance needs, and increase system yield by reducing wear and downtime, while also minimizing the need for pre-filtration of fluids.
Implementation Method 1
components of pressure exchangers become worn down and lose efficiency over time Due to movement of parts, high pressure of fluid, solid particles in one or more of the fluids, etc.
Implementation Method 2
components of pressure exchangers become worn down and lose efficiency over time Due to movement of parts, high pressure of fluid, solid particles in one or more of the fluids, etc.
Data Source
AI summary
A system includes an isobaric pressure exchanger (IPX) configured to exchange pressure between a first fluid and a second fluid. The IPX includes a rotor configured to rotate about a longitudinal axis of the rotor. The rotor forms rotor ports arranged substantially symmetrically around the longitudinal axis at a distal end of the rotor. The IPX further includes an end cover configured to be disposed at the first distal end of the rotor. The end cover forms end cover ports. The rotor ports are arranged for hydraulic communication with the end cover ports. The IPX further includes an insert disposed between two of the rotor ports or between two of the end cover ports.