Hydraulic Machine Support Ring for Sealing Surface Flatness
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Solution Overview
Problem
Hydraulic machines experience efficiency reduction due to leakage caused by deformation of interface surfaces under hydraulic pressure, which existing support elements, such as compression rings, fail to adequately address.
Innovation Solution
A support element with varying strength in circumferential and thickness directions, adapted to the specific resistances against deformation of the member, is used, with features like asymmetrical shapes, materials, and interference fits to compensate for uneven deformations and maintain sealing surface flatness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a uniform compression ring is used to support the member, then the member gains structural support, but the sealing surface flatness deteriorates due to uneven deformation under hydraulic pressure
Solution Approach 1:
The compression ring is designed with locally varying thickness, where the thickness varies in the circumferential direction to provide different support strengths at different locations. This local quality variation allows the compression ring to compensate for uneven deformation of the member under hydraulic pressure, maintaining sealing surface flatness while providing necessary structural support.
Solution Approach 2:
The compression ring features an asymmetric thickness distribution rather than a uniform circular cross-section. The varying thickness creates asymmetric support forces that counterbalance the asymmetric deformation patterns of the member caused by hydraulic pressure acting on angled structures, thereby preserving the flatness of the sealing interface surface.
2Adaptability or versatility
If the structure for hydraulic medium runs under an angle, then functional requirements are met, but deformation resistance becomes uneven, causing leakage
Solution Approach 1:
The compression ring's thickness is locally adapted to match the deformation characteristics at different circumferential positions. Where the member experiences higher deformation due to angled hydraulic structures, the compression ring is thicker to provide stronger support. This local quality matching ensures uniform sealing pressure distribution despite the asymmetric functional configuration.
3Power
If hydraulic pressure increases, then power transmission improves, but member deformation increases, reducing efficiency
Solution Approach 1:
The compression ring is pre-installed on the member to provide preliminary support before hydraulic pressure acts on the system. This preliminary anti-action counteracts the anticipated deformation forces, maintaining sealing surface integrity even when high hydraulic pressure is applied for power transmission, thereby preventing leakage and energy loss.
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 effectively reduces leakage and maintains sealing surface flatness by counteracting uneven deformations with tailored support element forces, enhancing the overall efficiency of hydraulic machines.
Implementation Method 1
the support element comprises a strength varying in circumferential direction around the member and/or in thickness direction in a middle region of the member
Implementation Method 2
the support element is in form of a compression ring connected to the member with an interference fit, wherein the interference fit varies in circumferential direction around the member and/or in thickness direction in a middle region of the member
Data Source
AI summary
A hydraulic machine includes a first member (1) having a first structure (2) for a hydraulic medium opening in a first interface surface (3) and a second member having a second structure for the hydraulic medium opening in a second interface surface is described, the first interface surface (3) being in contact with the second interface surface, wherein at least one of the members (1) is provided with a support element (6) surrounding the member (1). Such a machine should have a good efficiency. To this end the support element (6) has a strength varying in circumferential direction around the member (1) and/or in thickness direction in a middle region of the member (1).