Layered Pump Barrier Can Structure for Leakage and Wear Control
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Solution Overview
Problem
Existing fluid pump systems in aircraft thermal management systems face challenges in efficiently transferring heat between fluids while maintaining optimal pressure and flow rates, leading to potential wear and inefficiencies.
Innovation Solution
The development of layered barrier cans for pumps, which include integrated bearing systems and radially coupled fluid pump systems, along with magnetic couplings to minimize physical contact and ensure efficient heat transfer and pressure regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional single-material barrier cans are used, then manufacturing is simpler, but protection against fluid leakage and corrosion is insufficient
Solution Approach 1:
The barrier can employs a composite structure consisting of an inner shell made from corrosion-resistant material (such as Hastelloy, titanium, or Inconel) and an outer shell made from stronger structural material (such as aluminum alloy or stainless steel). This composite construction provides both corrosion resistance and structural strength, resolving the contradiction between reliability and device complexity by using materials that complement each other's properties rather than relying on a single material to provide all functions.
2Reliability
If magnetic couplings are used to minimize physical contact, then wear is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent replaces traditional mechanical contact-based sealing and coupling systems with magnetic couplings that transfer torque through magnetic fields without physical contact. This substitution eliminates wear from friction and contact while maintaining reliable power transmission. The design incorporates magnetic couplings between the driver impeller and follower impeller, allowing the follower impeller to be driven without direct mechanical connection, thus resolving the contradiction by prioritizing reliability through wear reduction while managing manufacturing precision through careful magnetic coupling design.
3Reliability
If integrated bearing systems are implemented, then support for rotating shafts is improved, but device complexity increases
Solution Approach 1:
The patent integrates the bearing system directly into the barrier can structure, combining the functions of shaft support and barrier containment into a single integrated component. The bearing assembly is incorporated within the barrier can, eliminating the need for separate bearing housings and simplifying the overall device structure. This merging approach resolves the contradiction by improving shaft support stability while reducing device complexity through functional integration.
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 solution enhances the efficiency and durability of heat transfer processes by maintaining optimal pressure and flow rates, reducing wear, and minimizing the physical size of the thermal management system components.
Implementation Method 1
magnetic couplings to minimize physical contact and ensure efficient heat transfer and pressure regulation
Data Source
AI summary
Layered barrier cans and methods of producing the same are disclosed herein. An example shroud disclosed herein includes an inner shell including a first non-metallic material, an outer shell including the first non-metallic material or a second non-metallic material, and a metal core shell positioned between the inner shell and the outer shell.