Gas Turbine Combustor Transition Piece Guide Jig
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Solution Overview
Problem
Existing methods for detaching and attaching gas turbine combustors require complex and large devices, increasing costs and worker load, necessitating a simpler configuration to reduce these burdens.
Innovation Solution
A combustor-transition-piece guide jig with a rail and fixing member is used to support the combustor transition piece, allowing for stable movement and reduced force requirements during detachment and attachment, eliminating the need for large-scale facilities and minimizing worker load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a combustor exchanger is used to detach and attach the combustor, then the detachment and attachment process can be automated, but the device becomes complicated and large, increasing cost and worker load
Solution Approach 1:
The combustor is divided into separable components (nozzle block and combustor transition piece) that can be independently handled. The detach and attach device is segmented into a simple rail structure rather than a complex automated exchanger, reducing overall system complexity while maintaining functionality
Solution Approach 2:
A rail structure serves as an intermediary element to guide the combustor transition piece during detachment and attachment. This simple intermediary replaces the need for complex automated exchangers, reducing device complexity while still enabling controlled movement of the combustor components
2Adaptability or versatility
If a combustor exchanger is used to detach and attach the combustor, then the process can be standardized, but the device becomes large, increasing cost and worker load
Solution Approach 1:
The essential function of the combustor exchanger is extracted and simplified to just a rail structure that provides guidance. The heavy, complex automated exchanger mechanism is removed entirely, keeping only the minimal structural element (rail) needed to enable standardized detachment and attachment procedures
Solution Approach 2:
The rail structure is designed as a simple, lightweight, and potentially temporary fixture rather than a permanent heavy-duty automated exchanger. This disposable-like approach to the guiding structure reduces weight and cost while maintaining standardization benefits
3Productivity
If the combustor is detached for inspections and maintenance, then the gas turbine operation time decreases, but the load on workers increases due to the large mass of the combustor
Solution Approach 1:
The rail structure acts as an intermediary that supports and guides the combustor transition piece during movement. This intermediary bearing structure reduces the force workers must exert by distributing the load and providing mechanical guidance, making it feasible to manually handle the heavy combustor components
Solution Approach 2:
The complex mechanical system of automated exchangers is replaced with a simple rail-based mechanical guidance system. This substitution reduces the mechanical complexity and weight of the handling system while still enabling efficient combustor detachment and attachment, balancing worker load reduction with maintenance productivity
Data Source
AI summary
A combustor-transition-piece guide jig is constituted by two rails, a fixing member, and a holding member. The fixing member is provided at one ends of the rails and attached to a combustor attachment port. The rails are inserted from the combustor attachment port toward inside of the combustor casing and fixed to the combustor attachment port by the fixing member. The rails come into contact with a combustor-transition-piece guiding part provided on a combustor transition piece to guide a movement of the combustor transition piece in one direction.