Compressor Outlet Housing Repair With Welded Bearing Support Insert
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Solution Overview
Problem
Compressor outlet housings face challenges in repair due to complex manufacturing and high costs, with existing methods often requiring replacement of entire components, which is inefficient and costly, especially when damage occurs beyond the bearing support.
Innovation Solution
A method involving the removal of damaged sections from the bearing support, web, and ledge, followed by the insertion and welding of replacement inserts to create a repaired compressor housing, utilizing precision machining and electron beam welding for structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire compressor outlet housing is replaced when damage occurs, then reliability is restored, but manufacturing cost and loss of time increase significantly
Solution Approach 1:
The outlet housing is divided into separable components: the main housing body and the bearing support assembly (which includes the bearing support, web, and ledge). This segmentation allows the bearing support assembly to be removed and replaced independently when damaged, rather than replacing the entire housing. The bearing support assembly can be detached by removing fasteners securing it to the housing body, enabling quick replacement that restores reliability while minimizing downtime.
Solution Approach 2:
The damaged bearing support assembly is removed and discarded, while the main housing body is retained and reused. This approach recovers the majority of the original housing structure, avoiding the need to manufacture a completely new housing. The replaced bearing support assembly can potentially be refurbished or recycled, further reducing waste and cost.
2Reliability
If the entire compressor outlet housing is replaced when damage occurs, then reliability is restored, but manufacturing cost increases significantly
Solution Approach 1:
The outlet housing is divided into separable components: the main housing body and the bearing support assembly. This segmentation allows the bearing support assembly to be removed and replaced independently when damaged, rather than replacing the entire housing. The bearing support assembly can be detached by removing fasteners securing it to the housing body, enabling quick replacement that restores reliability while minimizing downtime.
Solution Approach 2:
The damaged bearing support assembly is removed and discarded, while the main housing body is retained and reused. This approach recovers the majority of the original housing structure, avoiding the need to manufacture a completely new housing. The replaced bearing support assembly can potentially be refurbished or recycled, further reducing waste and cost.
3Manufacturing precision
If complex machining is used to manufacture the outlet housing, then manufacturing precision is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The outlet housing is divided into separable components: the main housing body and the bearing support assembly. The bearing support assembly includes the bearing support with its precisely machined bore, the web, and the ledge. By segmenting the design, the complex precision machining is concentrated in the smaller bearing support assembly rather than the entire housing. This allows for easier manufacturing and repair, as only the precision-bearing support assembly needs to be machined with high precision, while the main housing body can be manufactured with standard tolerances.
4Ease of repair
If the bearing support is replaced with an insert, then ease of repair is improved, but damage can occur elsewhere in the housing
Solution Approach 1:
The outlet housing is divided into separable components: the main housing body and the bearing support assembly. The bearing support assembly includes the bearing support with its precisely machined bore, the web, and the ledge. By segmenting the design, the complex precision machining is concentrated in the smaller bearing support assembly rather than the entire housing. This allows for easier manufacturing and repair, as only the precision-bearing support assembly needs to be machined with high precision, while the main housing body can be manufactured with standard tolerances.
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 method allows for cost-effective and precise repair of damaged compressor outlet housings by replacing only the damaged sections, maintaining operational precision and reducing the need for expensive new parts.
Implementation Method 1
The insert is then welded to the remaining part to provide a repaired compressor housing
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A method of repairing a compressor outlet housing includes the steps of obtaining a damaged compressor outlet housing having a radially outer volute, a radially inwardly extending finger extending to an axially extending ledge, a radially inwardly extending web extending radially inwardly from the ledge, and a radially inner bearing support defining a bore. The method identifies a damaged section within at least one of the bearing support, the web, and the ledge, and removes at least the bearing support and the web to leave a remaining part. The method then inserts an insert having at least a replacement bearing support and a replacement web into the remaining part after the removal step. The method then welds the insert to the remaining part to provide a repaired compressor housing. A method of replacing a compressor outlet housing and a replacement compressor outlet housing are also disclosed.