Design and Verification Test of the Primary and Secondary Stage Compression Gap Size of Miniature High Pressure Air Compressor. Issue 2 (March 2021)

• Record Type: Journal Article
• Authors: Yang, Lihua; Fang, Bo; Qu, Shengguan; Li, Xiaoqiang; Mao, Tao; Gao, Hongyun; Xia, Yumeng
• Is Part Of: Journal of physics. Volume 1802:Issue 2(2021)
• Publication Date: 2021-03
• Subjects: Mini high-pressure air compressor -- connecting rod -- cylinder -- finite element analysis -- verification test; Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1802/2/022080
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Aiming at the prominent problem of the primary and secondary pistons hitting the cylinder head in the current miniature high-pressure three-stage air compressor, a design study on the size of the primary and secondary compression gap is carried out. Through the theoretical force analysis of the connecting rod, the force situation of the connecting rod at the top and bottom dead centers is obtained. The three-dimensional models of connecting rod and cylinder are established based on SolidWorks software, and the three-dimensional models are simplified. Based on Ansys Workbench software, the connecting rod and cylinder models are pre-processed, model discretized and post-processed. The structural statics and steady-state thermal comprehensive analysis of the connecting rod at the upper and lower dead points and the steady-state thermal analysis of the cylinder under working conditions are completed. Through analysis, the total axial deformation of the connecting rod and the total axial deformation of the cylinder under high temperature and high speed working conditions are obtained. According to the simulation analysis results, the first and second compression gap size is designed. Based on the design results, ten sets of air compressors are tested for dimensional design verification. The test results show that the air compressors of each test group can complete the charging requirements within the specified time, and there is no phenomenon of piston hitting the cylinder head, indicating the size design reliability.