Hydraulic Connection Angular Misalignment Compensation
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Solution Overview
Problem
The existing hydraulic connections in turbine engines, which involve telescopic rods for fluid transfer between a fixed and movable portion, are prone to locking and failure due to misalignment under high mechanical stresses, leading to critical system failures.
Innovation Solution
A hydraulic connection design that allows for angular displacement between the tubular rod and the part it connects to, using a seal with an annular groove and a resilient element to maintain impermeability and prevent locking, while enabling limited rotation to compensate for misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid nipple-nozzle connection is used to ensure sealing, then sealing integrity is improved, but angular displacement capability deteriorates leading to locking under misalignment
Solution Approach 1:
The connection device transforms the rigid static connection into a dynamic system that can adapt its configuration. The resilient element allows the connection to dynamically adjust to angular misalignments while maintaining sealing, resolving the contradiction between rigid sealing and angular adaptability.
Solution Approach 2:
The invention changes the physical state of the connection by introducing a resilient element that can deform elastically. This parameter change allows the connection to accommodate angular displacements through elastic deformation while maintaining fluid tightness, solving the contradiction between rigidity for sealing and flexibility for alignment compensation.
2Adaptability or versatility
If telescopic rods are used to accommodate axial position variations, then adaptability to axial movement is improved, but locking risk increases under high pressure and misalignment
Solution Approach 1:
The resilient element acts as an intermediary between the telescopic rod and the rigid connection components. It mediates the forces transmitted through the telescopic mechanism, preventing the transmission of locking forces while maintaining the adaptability to axial movements, thus resolving the contradiction between axial adaptability and locking prevention.
Solution Approach 2:
The resilient element provides beforehand cushioning by absorbing and distributing mechanical stresses before they can propagate through the telescopic rod system. This preemptive stress distribution prevents the conditions that lead to locking, maintaining both axial adaptability and reliability under high pressure.
3Stability of the object's composition
If the connection is made rigid to prevent angular displacement, then stability is improved, but misalignment compensation capability deteriorates
Solution Approach 1:
The invention changes the mechanical properties of the connection by introducing elasticity through the resilient element. This parameter change allows the connection to exhibit both stability (through elastic restoring forces) and misalignment compensation (through elastic deformation), resolving the contradiction between stability and adaptability.
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 prevents locking and failure of the telescopic rod system, ensuring continuous hydraulic fluid transfer regardless of axial position and high pressure, while maintaining the sealing integrity of the fluid circuit.
Implementation Method 1
a seal (15) being interposed between the opening (111a) and the end piece (131) of the rod (13), wherein one of the two surface portions comprises an annular groove (111c), and the seal is received in the annular groove
Data Source
AI summary
The invention relates to a hydraulic connection device comprising a part with an opening for the throughflow of hydraulic fluid and a tubular rod with an end fitting, the end fitting of the rod being hydraulically connected to the opening for the throughflow of the fluid, wherein the opening and the end fitting of the rod each have a portion of surface which is shaped so as to allow a certain angular movement between the part and the rod, a seal being inserted between said two surface portions.