Impulse Body Module Base Projection for Turbine Vibration
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Solution Overview
Problem
Existing impulse body modules for turbomachines, such as gas turbines, face challenges in simplifying installation and ensuring positional security due to oscillation and vibration of blade arrangements, which can lead to damage from resonances.
Innovation Solution
The impulse body module incorporates a base projection extending from the receiving component to prevent falling and twisting, with configurations such as varying heights and cross-sectional areas to facilitate secure installation, and is produced using additive processes like selective laser melting for enhanced stability and airtight sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional impulse body modules are used without base projections, then the structure is simpler, but the positional security and resistance to vibration-induced displacement deteriorates
Solution Approach 1:
The base projection is designed in advance as an integral part of the receiving component, extending from the base to engage with a corresponding depression in the blade arrangement. This preliminary structural feature ensures that when the module is installed, the base projection automatically provides positional security and prevents displacement due to vibrations, without requiring additional securing operations or complex assembly steps.
2Ease of manufacture
If additive manufacturing processes are used to produce the impulse body module, then manufacturing flexibility and integration are improved, but production cost and process complexity increases
Solution Approach 1:
The receiving component, insert component, and closure component are merged into a single integrated structure produced by additive manufacturing. The base projection is formed as an integral part of the receiving component, eliminating the need for separate manufacturing and assembly operations. This merging approach simplifies the overall manufacturing process while maintaining design flexibility and structural integrity.
3Reliability
If the receiving space is completely closed with a closure component, then airtight sealing is improved, but access for maintenance and inspection deteriorates
Solution Approach 1:
The closure component is designed as a separate, removable segment that can be detached from the receiving component. This segmentation allows the closure component to provide airtight sealing when assembled, while enabling easy removal for maintenance and inspection of the impulse bodies and cavities. The closure component can be reattached after maintenance to restore the sealed configuration.
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 simplifies installation, enhances positional security, and ensures airtight sealing, reducing the risk of damage from vibrations and protecting the impulse bodies from hot gas oxidation and sulfidation, while allowing for cost-effective mass production.
Implementation Method 1
a one-piece closure component which is materially bonded to the receiving component in such a way that the receiving space is closed
Implementation Method 2
generative methods, such as in particular laser melting methods
Data Source
Figure 1A~1B
Figure 2~4
Figure 5A~5B
AI summary
The invention relates to a pulse body module (110) for a turbomachine, in particular a turbine stage of a gas turbine, comprising: a one-piece receiving component (112) with a base (114) and side walls (118a, 118b, 120a, 120b) arranged circumferentially on the base (114), wherein the side walls (118a, 118b, 120a, 120b) and the base (114) define a receiving chamber (132); a one-piece insert component that is inserted into the receiving chamber (132) of the receiving component (112), wherein the receiving component (112) and the insert component received therein are configured such that they together define several separate cavities, and wherein a pulse body, in particular a sphere, is received in each cavity; and a one-piece closure component that is materially interlocked with the receiving component. (112) is connectedsuch that the receiving chamber (132) is closed and the insert component is surrounded by the receiving component (112) and the closure component. According to the invention, it is proposed that the receiving component (112) has at least one base projection (170) in the region of its base (114) which extends away from the receiving chamber (132).