Integrated Sealing Bars and Cylinders for Rotary Piston Compressors
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Solution Overview
Problem
The existing rotary piston compressor sealing systems face inefficiencies due to separated sealing and expander components, leading to difficult assembly, reduced leak tightness, and compromised compressor performance, with issues like gas leakage and component loss during disassembly.
Innovation Solution
The sealing system integrates radial and butt sealing bars made from antifriction composite materials, configured conjointly with sealing cylinders and expanders, forming integral units that simplify assembly and maintenance, ensuring secure pressing against working surfaces and preventing gas leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separated sealing bars and sealing cylinders are used, then the assembly process becomes difficult and time-consuming, but the device complexity is reduced
Solution Approach 1:
The patent combines the sealing bar and sealing cylinder into a single integrated component. The sealing bar is formed as an integral part of the sealing cylinder, eliminating the need for separate assembly of these two elements. This merging resolves the contradiction by simplifying the assembly process (improving ease of manufacture) while maintaining the functional separation needed for the sealing system to work effectively (managing device complexity).
2Ease of manufacture
If separated expanders are used, then the assembly process becomes difficult and time-consuming, but the device complexity is reduced
Solution Approach 1:
The patent integrates the expander with the sealing cylinder and sealing bar assembly. The expander is positioned and secured as part of the integrated sealing unit, eliminating the need for separate handling and assembly of expanders. This merging resolves the contradiction by simplifying the assembly process (improving ease of manufacture) while maintaining the functional independence needed for the expander to perform its sealing function (managing device complexity).
3Reliability
If separated sealing bars and sealing cylinders are used, then the leak tightness of working chambers is reduced, but the device complexity is reduced
Solution Approach 1:
The patent creates an integrated sealing bar-cylinder assembly that eliminates gaps and interfaces between separate components. The sealing bar is formed as an integral part of the sealing cylinder, ensuring continuous contact with the working chamber surfaces. This merging resolves the contradiction by improving leak tightness (enhancing reliability) through continuous sealing surfaces while maintaining the functional separation needed for the sealing system to adapt to operating conditions (managing device complexity).
4Productivity
If separated sealing elements are pressed by separated expanders, then the operating efficiency is reduced, but the device complexity is reduced
Solution Approach 1:
The patent integrates the expander with the sealing bar and sealing cylinder into a unified assembly. This integration ensures that the expander force is directly and efficiently transmitted to the sealing elements without loss through intermediate interfaces. The merged structure eliminates misalignment and gap issues that occur with separate components, thereby improving operating efficiency (enhancing productivity) while maintaining the functional independence needed for the sealing system to respond to pressure changes (managing device complexity).
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 configuration enhances operating efficiency, leak tightness, and compressor performance by eliminating gaps and reactive forces, reducing assembly complexity, and improving durability and reliability.
Implementation Method 1
the sealing bars are tightened against the working surfaces by expanders
Implementation Method 2
radial and butt sealing bars made from antifriction composite material
Data Source
AI summary
Rotary piston machines working volume sealing systems thereof are disclosed. They can be used in gas (air) and refrigerating compressors, heat and vacuum pumps, and internal-combustion engines. The rotary piston compressor sealing system includes radial and butt sealing bars in the rotor slots, tightened towards the working surfaces by expanders and interacting with the sealing cylinders. The radial and butt sealing bars are made from an antifriction composite material. Each sealing cylinder is configured conjointly with one end of one butt sealing bar. Variations also are disclosed. The technical result involves increasing efficiency of the sealing system and the whole compressor operation, simplification of the system production process, simplification and labor intensity reduction of the system assembly and maintenance, increasing of the working chambers leakage tightness, increasing of system reliability and durability, and improvement of compressor performance related to bleeding and the dynamic pneumatic process as a whole.