Gas Compression Element Outlet Design for Overcompression Relief
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Solution Overview
Problem
Existing gas compression elements experience dynamic overcompression and efficiency loss due to incomplete evacuation of compressed gas, leading to potential damage and increased power consumption.
Innovation Solution
The outlet opening in the gas compression element is redesigned with a tongue-shaped protrusion that intentionally allows controlled leakage to reduce overcompression, featuring smaller tongue edge radii and adjusted edge positions to enhance gas evacuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outlet opening is designed with a conventional sealing line-based shape, then the compression chamber is properly sealed from high-pressure gas, but dynamic overcompression occurs and compressed gas cannot be completely evacuated
Solution Approach 1:
The outlet opening is designed with non-uniform edge characteristics: the first tongue edge has a smaller radius than the sealing line trajectory radius, while the second tongue edge maintains or exceeds its corresponding sealing line radius. This local differentiation allows the first tongue edge to enable controlled leakage for complete gas evacuation, while the second tongue edge maintains proper sealing, thus resolving the contradiction between sealing effectiveness and gas evacuation completeness.
2Reliability
If the outlet opening follows the sealing line trajectory, then high-pressure gas is separated from low-pressure gas, but overcompression causes potential damage and increased power consumption
Solution Approach 1:
The invention intentionally introduces a controlled defect by making the first tongue edge radius smaller than the sealing line trajectory radius. This creates a deliberate leakage path that converts the harmful effect of overcompression into a beneficial pressure-relief mechanism, allowing excess pressure to be released and preventing damage while maintaining effective pressure separation through the second tongue edge.
3Productivity
If the outlet opening is positioned at the compression chamber outlet side, then compressed gas can be evacuated, but incomplete evacuation leads to efficiency loss
Solution Approach 1:
The invention changes the geometric parameters of the outlet opening edges, specifically setting the first tongue edge radius to be smaller than the sealing line trajectory radius. This parameter modification creates a pressure differential that drives complete gas evacuation from the compression chamber, eliminating the energy loss associated with incomplete evacuation while maintaining the outlet opening's strategic positioning.
Data Source
AI summary
An element for compressing a gas, having a housing (2) in which a first and second rotor (3, 4) are mounted, wherein the housing (2) is provided with an axial outlet opening (8) formed by: a tongue-shaped protrusion (14) between first and second proximal edge (9b), wherein an edge of the tongue-shaped protrusion (14) is formed by a first and second tongue edge (13a, 13b) that is further from the rotational axis of the first or second rotor (3, 4) than the second or first tongue edge (13a, 13b); and a first tongue edge radius of the first tongue edge (13a) relative to the first rotational axis is smaller than a parallel radius of a first geometric path relative to the first rotational axis, which path is a point of contact, situated furthest from the first rotational axis, between the end surfaces of a first and second lobe (5a, 5b).