Fluid Transfer Interface for Fast Sealed Turbomachine Mounting

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing fluid transfer devices between a stator and a rotor in turbomachines require complex alignment and disassembly for hydraulic connections, leading to lengthy and costly maintenance processes.

Innovation Solution

A fluid transfer device with a stator and rotor portion that allows for quick and automatic hydraulic and mechanical connections through a compact design, featuring an attachment interface with captive attachment members and passages for tool access, facilitating easy mounting and dismounting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the transfer device uses a complex alignment arrangement for hydraulic connections, then the connection reliability is improved, but the mounting and dismounting time increases significantly

Engineering Contradiction:
Improvehydraulic connection reliabilityVSAvoidmounting and dismounting time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The transfer device is divided into a stator portion and a rotor portion that can be independently assembled and disassembled. The attachment interface separates the hydraulic connection function from the mechanical mounting, allowing the rotor portion to be quickly attached to the stator portion without complex realignment procedures.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The attachment interface includes self-aligning features where the pipeline and conduit automatically coincide when the attachment members are engaged. The captive attachment members guide the alignment process, eliminating the need for external alignment tools or procedures during mounting and dismounting.

Inventive Principle:
Principle #25Self-service

2Stability of the object's composition

If the transfer device requires dismounting the actuator assembly to access the transfer device, then the structural integrity is maintained, but the repair time increases

Engineering Contradiction:
Improvestructural integrityVSAvoidtransfer device accessibility
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The rotor portion of the transfer device can be extracted from the actuator assembly by simply disengaging the attachment members at the attachment interface. This allows the rotor portion to be removed for repair or replacement without dismounting the entire actuator assembly, significantly reducing maintenance time while maintaining structural integrity during operation.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If the attachment interface requires precise alignment for hydraulic connection, then the sealing reliability is improved, but the mounting complexity increases

Engineering Contradiction:
Improvesealing reliabilityVSAvoidmounting complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The attachment members are designed as captive elements that are already positioned on the stator portion before the rotor portion is attached. This preliminary positioning ensures that when the rotor portion is brought into place, the pipeline and conduit are pre-aligned, eliminating the need for complex alignment procedures during mounting while maintaining sealing reliability.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12448902B2Fluid transfer device with hydraulic and mechanical connection means
Publication Date: 2025.10.21 SAFRAN AIRCRAFT ENGINES SAS
  • US12448902B2 patent drawing
  • US12448902B2 patent drawing
  • US12448902B2 patent drawing

AI summary

A fluid transfer device for a turbomachine with longitudinal axis X, which includes a stator portion intended to be connected to a stator equipment of the turbomachine and a rotor portion engaged in the stator portion. The stator equipment including at least one conduit fluidly connected to at least one pipeline of the stator portion, the stator portion and the stator equipment including an attachment interface intended to releasably receive attachment members, the attachment interface and the attachment members being configured so as to make a sealed coincidence of the pipelines and conduit, and the transfer device comprising at least one passage allowing the access of an external tool upstream of the transfer device for accessing the attachment members and passing through the transfer device in either side.