Modular Rotor Assembly Carrier for Compressor Alignment
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Solution Overview
Problem
The labor-intensive and costly process of assembling and aligning individual components in industrial machinery, such as compressors, leads to increased storage and inventory costs due to the need for precision fabrication and custom combinations, which can result in premature wear and failure if not properly aligned.
Innovation Solution
A modular pre-assembly approach where components are integrated into a carrier, allowing for quick assembly and standardization, with the carrier being precision machined to maintain component alignment and reduce assembly time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual components are assembled and aligned with significant precision, then operating reliability is improved, but assembly cost and labor time increase
Solution Approach 1:
The drive system is divided into modular components (motor, gearbox, impeller assembly) that can be pre-assembled and pre-aligned as separate units. Each module is manufactured with controlled internal alignment, then integrated into the final system, reducing on-site alignment work and labor costs while maintaining reliability.
Solution Approach 2:
Components such as the impeller, gas seal, and shaft end cap are pre-assembled into a pre-aligned configuration during manufacturing. This preliminary alignment action eliminates the need for time-consuming field alignment procedures, reducing assembly labor while ensuring proper component alignment for reliable operation.
2Manufacturing precision
If individual components are precision fabricated to facilitate alignment, then alignment accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The system is segmented into modules with built-in alignment features. Each module is precision-fabricated as a complete unit (e.g., impeller assembly with integrated gas seal and shaft end cap), transferring alignment precision requirements to the manufacturing stage where they can be controlled more efficiently, rather than requiring high-precision field assembly.
Solution Approach 2:
A pre-aligned intermediate assembly (impeller, gas seal, shaft end cap combination) serves as a mediator between individual component manufacturing and final system integration. This intermediate unit encapsulates the alignment complexity, allowing standard tolerances on individual parts while achieving high overall alignment accuracy.
3Adaptability or versatility
If multiple component options are stocked for custom assembly, then application versatility is improved, but inventory and storage cost increase
Solution Approach 1:
The modular architecture employs universal mounting interfaces and standardized connection points across different component variants. This allows a limited set of base modules to be adapted to multiple applications through configuration changes rather than requiring unique components for each application, reducing inventory requirements while maintaining versatility.
Solution Approach 2:
The system is segmented into standardized modules that can be mixed and matched to create different configurations. Instead of stocking complete custom-assembled units for each application, the inventory consists of discrete modular components (motor units, gearbox variants, impeller assemblies) that can be combined to meet diverse application requirements, reducing total inventory volume.
Data Source
AI summary
Portions of the drive system for a piece of rotating equipment are pre-assembled into a subassembly. The subassembly can be held together by a carrier that is fabricated to accept the components in a proper alignment so that the carrier can be installed as a unit. In one embodiment, the carrier becomes a gearbox housing component that is installed, saving the need for individual component alignment. This modular approach allows an assembly having a single part number to apply to a given compressor unit and further allows standardization of air ends of compressors with specific impellers and inlets added to meet requirements of a specific application.