Centrifugal Compressor Lubricant Distribution System
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Solution Overview
Problem
Centrifugal compressors face challenges with increased cost, installation, and maintenance due to complex hardware components, and inefficiencies in lubricant flow and heat management.
Innovation Solution
The centrifugal compressor design includes a rotor assembly with integrated seals and multiple lubricant paths, bearing retainers with non-planar surfaces for adjustable positioning, and a heat exchanger with an integral flow control valve to reduce hardware and improve lubricant flow temperature and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional hardware components are used in centrifugal compressors, then structural strength and reliability are maintained, but cost, installation complexity, and maintenance requirements increase
Solution Approach 1:
The bearing retainer is merged with the compressor housing to form an integrated structure, eliminating the need for separate bearing retainer components and reducing hardware complexity while maintaining structural integrity and reliability
Solution Approach 2:
The bearing retainer surface serves multiple functions: it provides a mounting surface for bearings, acts as a sealing surface, and enables adjustable positioning of the rotor assembly, reducing the need for additional specialized components
2Temperature
If complex lubricant distribution systems are used, then lubricant flow and heat management are improved, but device complexity and maintenance requirements increase
Solution Approach 1:
The bearing retainer surface incorporates localized non-planar features and integrated lubricant distribution channels that direct lubricant flow precisely where needed, improving heat management and lubricant temperature control without requiring a complex system-wide lubricant distribution network
Solution Approach 2:
The integrated bearing retainer design allows the compressor housing itself to perform lubricant distribution functions, with lubricant channels and flow paths built into the housing structure, eliminating the need for separate lubricant distribution components
3Productivity
If adjustable bearing positioning is implemented, then operational efficiency and heat management are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The bearing retainer surface incorporates adjustable positioning features that allow the rotor assembly to be positioned at different axial locations, enabling optimization of operational efficiency and heat management while maintaining a relatively simple manufacturing process through the use of non-planar surfaces and integrated features
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 design simplifies installation and maintenance, reduces costs, and enhances operational efficiency by eliminating the need for additional hardware, optimizing lubricant flow, and improving heat management within the compressor system.
Implementation Method 1
a heat exchanger having an integral flow control valve, the heat exchanger including a cooling fluid supply head configured to flow a cooling fluid flow for transfer of heat between a gas pressurized by the centrifugal compressor and the cooling fluid flow
Implementation Method 2
one or more bearing components that define multiple, separate lubricant paths
Data Source
AI summary
Embodiments of the present disclosure are directed towards a bearing of a rotor assembly having a first lubricant flow path configured to flow a first lubricant flow to a first bearing surface of the rotor assembly and a second lubricant flow path separate from the first lubricant flow path and configured to flow a second lubricant flow to a second bearing surface of the rotor assembly.