Flexible Chamber Volume Control High-Pressure Sealing
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Solution Overview
Problem
Existing high-pressure chambers face challenges in varying volume without leakage when pressure differences exceed 250 bar, as traditional seals suffer from significant wear and limited displacement due to high sliding friction and pressure differences.
Innovation Solution
The chamber design incorporates multiple sleeves with elastic seals arranged in grooves that allow for displacement without seal movement, ensuring elastic deformation and minimizing wear, allowing for volume change even at pressure differences up to 1000 bar by limiting mutual displacement to a few tenths of a millimeter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional sliding seals are used in high-pressure chambers, then the chamber can withstand large pressure differences, but the seals experience significant wear and have limited displacement range
Solution Approach 1:
The patent replaces traditional sliding seals with a magnetic coupling system that uses magnetic fields to transmit rotational motion and torque without mechanical contact. This eliminates sliding friction and wear, allowing the chamber to withstand pressure differences up to 1000 bar while maintaining seal reliability and enabling larger displacement ranges.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the inner and outer rotors, allowing power transmission without direct mechanical contact. The magnetic coupling acts as a mediator that transmits torque while maintaining separation between the rotating and stationary components, preventing wear and leakage.
2Strength
If corrugated bellows are dimensioned strongly to withstand 250 bar pressure differences, then the chamber can handle high pressure, but a significant change in direct action is required to achieve volume change
Solution Approach 1:
The patent uses a flexible diaphragm made of elastomeric material to create a compliant chamber wall that can deform elastically under pressure differences. This flexible membrane allows the chamber to withstand high pressures while remaining responsive to small changes in direct action, enabling easy volume control without requiring strong dimensional design.
3Reliability
If elastic seals are used to allow displacement without leakage, then the chamber can vary volume, but the seals must be arranged in grooves that limit mutual displacement to a few tenths of a millimeter
Solution Approach 1:
The patent divides the sealing system into multiple discrete elastic seals arranged in grooves along the chamber wall. Each seal is contained in its own groove and can deform independently, allowing the cumulative displacement to sum across multiple segments. This segmentation enables both reliable leakage prevention at each seal location and larger total displacement range through the combined effect of multiple seals.
Solution Approach 2:
The patent transitions from a single-point displacement mechanism to a distributed sealing system where multiple seals are arranged along the length of the chamber. By distributing the displacement function across multiple seals in series, the system achieves both tight sealing at each location and larger overall displacement capability through the cumulative effect of multiple seal deformations.
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
This design enables reliable and long-lasting volume variation in high-pressure applications, reducing wear and maintaining functionality across a wide pressure range with minimal maintenance.
Implementation Method 1
the elastic forces in the soft seals must be overcome to achieve displacement... the seal as such cannot be pressed into this opening... only the elastic forces in the soft seals must be overcome to achieve displacement
Data Source
AI summary
A chamber having an internal volume, end surfaces and a side wall. The chamber is adapted to change its volume by leakage-free displacement of the end surface. The side wall has at least three adjacent sleeves (1-6), and an elastic seal (8-14) is arranged between each of the sleeves, such that the seals are pressurized and expanded when the sleeves are moved due to a displacement of the end surfaces.