Compressor Piston Carrier Sleeve for Rapid Ring Replacement
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Solution Overview
Problem
The existing technologies for high-pressure reciprocating compressors require time-consuming and difficult replacement of piston rings, especially in tight operational spaces.
Innovation Solution
A piston design featuring a pre-assembled piston ring package on a carrier sleeve, which can be easily attached to and detached from the piston rod using a withdrawal tool, facilitating the replacement of all piston rings simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If piston rings are individually attached to the piston rod, then the piston structure is simple, but the replacement of piston rings becomes time-consuming and complex
Solution Approach 1:
The piston ring package is segmented from the piston rod through the carrier sleeve design, allowing the piston rings to be pre-assembled as a complete unit on the carrier sleeve and then attached to the piston rod as one module, enabling easy removal and replacement without disassembling individual piston rings
Solution Approach 2:
The piston rings are pre-assembled on the carrier sleeve during manufacturing, forming a complete piston ring package that is ready for installation. This preliminary assembly eliminates the need for time-consuming on-site assembly of individual piston rings and ensures proper configuration before installation
2Productivity
If piston rings are pre-assembled on a carrier sleeve, then the replacement process is simplified, but the piston structure becomes more complex
Solution Approach 1:
The carrier sleeve is nested within the piston rod structure, with the piston rings arranged on the outer circumferential surface of the carrier sleeve. This nesting approach allows the piston rings to be pre-assembled on the carrier sleeve and then installed as a complete unit on the piston rod, simplifying replacement while maintaining a compact overall structure
Solution Approach 2:
The carrier sleeve acts as an intermediary component between the piston rod and the piston rings. It provides a structured platform for pre-assembling multiple piston rings in the correct configuration and facilitates their installation and removal as a single unit, reducing the complexity of direct individual attachment
3Ease of operation
If a mechanical interface is added to the carrier sleeve for withdrawal tool attachment, then the disassembly process is facilitated, but the carrier sleeve design becomes more complex
Solution Approach 1:
The mechanical interface is extracted as a separate functional feature on the carrier sleeve, such as a protrusion or thread, that can be engaged by the withdrawal tool. This extraction approach allows the carrier sleeve to be removed from the piston rod using an external tool without requiring complex integrated disassembly mechanisms
Data Source
AI summary
A piston for a compressor comprises a piston rod which defines a longitudinal axis, and a piston ring package with a carrier sleeve which extends along the longitudinal axis, is arranged on a circumferential surface of the piston rod and is releasably fastened to the piston rod, and a plurality of piston ring devices arranged next to one another along the longitudinal axis, which are arranged on an outer circumferential surface of the carrier sleeve and are fastened to the carrier sleeve, the carrier sleeve preferably having a mechanical interface for attaching a withdrawal tool for applying a force directed along the longitudinal axis.