Blind Coupling Device for Turbomachine Pitch Control
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Solution Overview
Problem
The integration of fluidic and electrical supplies into the complex and confined environment of a turbomachine fan's pitch control system is challenging due to difficult access and limited space, requiring lengthy intervention times for connection establishment.
Innovation Solution
A device for blind coupling of fluidic and electrical supplies to a receiving control mechanism, comprising a hollow cylindrical body, a cover, and a ring that allows for coaxial housing and secure connection within the cylindrical sleeve, reducing the need for extensive piping and electrical connections, ensuring correct coupling and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If simple piping and cables are used to connect supplies inside the sleeve to the control mechanism, then the connection is straightforward, but the integration becomes complicated and tricky due to difficult access and reduced space, requiring lengthy intervention times
Solution Approach 1:
The coupling device is housed coaxially inside the cylindrical sleeve, with the hollow cylindrical body accepting the control mechanism in its housing. The cover connects hidden supplies to passages of the body, while the ring collects and distributes supplies from passages to the control mechanism, creating a nested arrangement that simplifies integration within the confined space
Solution Approach 2:
The coupling device integrates multiple functions into a single compact unit: the hollow cylindrical body provides housing and passage connectivity, the cover establishes connections from hidden supplies to internal passages, and the ring distributes supplies from passages to the control mechanism. This multi-functional integration reduces the number of separate components needed
2Reliability
If the coupling device is introduced into the sleeve via translational movement, then blind coupling is achieved guaranteeing correct connections, but the space and access requirements for assembly must be met
Solution Approach 1:
The coupling device is divided into three main segments: the hollow cylindrical body, the cover, and the ring. This segmentation allows each component to be optimized for its specific function while fitting together in a compact configuration that can be introduced into the sleeve via translational movement
Solution Approach 2:
The coupling device utilizes coaxial arrangement along the longitudinal axis of the sleeve, with components positioned at different axial locations. The hollow cylindrical body is introduced first, followed by the cover and ring, creating a compact axial configuration that minimizes the volume required for assembly while ensuring correct blind coupling
Data Source
AI summary
A device can be housed coaxially inside a sleeve in which the supplies are situated, and includes: a hollow cylindrical body that fits inside the sleeve and accepts the mechanism in the housing of the hollow body, with passages for respectively connecting the supplies to said mechanism; and a cover which is integrated or fixed, removably, on the front side of the cylindrical body and connects the hidden supplies to the respective passages of the body.