Multicomponent Cylinder Compressor Minimized Piston Clearance
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Solution Overview
Problem
In reciprocation type multistage compressors, forming cylinders from a single member is difficult, leading to challenges in minimizing the width of the minute gap between the piston and cylinder, which is critical for preventing gas leakage, especially in high-pressure compression chambers.
Innovation Solution
The compressor configuration includes multiple cylinder components and pistons fitted together, with ring member groups in annular grooves to minimize the minute gap, and a reduced stroke for the second pressing part to reduce wear and leakage, particularly in the second compression part handling high-pressure gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cylinder is formed from a single member, then manufacturing precision can be improved, but device complexity increases making it difficult to process
Solution Approach 1:
The cylinder body is divided into multiple cylinder components (first cylinder component, second cylinder component, third cylinder component) that can be assembled together. This segmentation allows each component to be manufactured with standard precision while achieving the required overall precision through careful assembly and gap control at the interfaces.
2Device complexity
If a cylinder is formed from a plurality of divided bodies, then device complexity is reduced, but manufacturing precision of the minute gap deteriorates
Solution Approach 1:
The patent applies different gap width specifications to different locations: the minute gap at the front end side of the cylinder (where high-pressure gas is introduced) is controlled to be 0.01-0.05mm, while other gaps can be larger. This local quality approach focuses precision control where it is most critical for preventing gas leakage.
Solution Approach 2:
The patent specifies precise parameter ranges for the minute gap (0.01-0.05mm) and uses this controlled parameter to balance between assembly feasibility and gas leakage prevention. By defining this specific parameter range, the patent transforms the assembly problem into a controllable manufacturing specification.
3Reliability
If the minute gap width is minimized in high-pressure compression chambers, then gas leakage is reduced, but device complexity increases
Solution Approach 1:
The piston is divided into multiple pressing parts (first pressing part, second pressing part, third pressing part) corresponding to different compression chambers. This segmentation allows each pressing part to be optimized for its specific pressure condition, with the second pressing part specifically designed for high-pressure conditions with minimized gap width.
Solution Approach 2:
Different gap width requirements are applied to different pressing parts based on their operating conditions. The second pressing part operating in high-pressure conditions has a minimized minute gap (0.01-0.05mm), while other pressing parts can have larger gaps, optimizing reliability where needed without unnecessarily complicating the entire assembly.
Data Source
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AI summary
A compressor of the present invention comprises a crankshaft, a first compression part, and a second compression part for further compressing a gas discharged from the first compression part. The first compression part comprises a first reciprocating motion conversion part, a first pressing part, and a first cylinder body comprising a plurality of cylinder components, while the second compression part comprises a second reciprocating motion conversion part, a second pressing part, and a second cylinder body comprising a plurality of cylinder components. The number of the cylinder components of the second cylinder body is smaller than that of the cylinder components of the first cylinder body.