eCite Digital Repository

Study of the thermo-mechanical couple deformation of the meshing pairs of a single-screw compressor

Citation

Meng, X and Zhang, Z and Li, X and Wu, W and Wang, X and Wu, G and Wang, S and Zhu, Z, Study of the thermo-mechanical couple deformation of the meshing pairs of a single-screw compressor, Institution of Mechanical Engineers. Proceedings. Part E: Journal of Process Mechanical Engineering, 235, (4) pp. 1175-1187. ISSN 0954-4089 (2021) [Refereed Article]

Copyright Statement

IMechE 2021

DOI: doi:10.1177/09544089211028775

Abstract

Single-screw compressor has attracted attentions from the scientific community due to its excellent performance. However, thermal deformations of the star wheel, screw, and casing substantially affect the clearance between the components, and hence reduce the performance of the single-screw compressor. In this study, the thermal deformation of a meshing pair of the single-screw compressor was investigated using a finite-element-based thermo-mechanical coupled model. This model was developed based on measured thermal boundary conditions during compressor operation. The effect of thermal deformation on the compressor sealing clearance was then studied. The results showed that the thermal deformation of the casing, screw, screw shaft, and star wheel significantly affected the clearance between the tooth tip and the groove bottom as well as the meshing pair clearance distribution. The change of clearance between the casing and screw is up to 0.03 mm while the change of the clearance between the star wheel tooth tip and screw groove is up to 0.05 mm. Furthermore, it was found that the spatial position meshing error caused by the thermal deformation was one of the major reasons for the wear of the meshing pair of the single-screw compressor. The simulated thermal deformation results agreed well with the experimental data. The clearances of the compressor were modified based on the thermal deformation in a single-screw compressor with a capacity of 6 m3/min and the results showed that the modified compressor can operate reliably. This indicated that the developed model could be used in the design of the single-screw compressor. It provides guidance for the design and optimization of large single-screw compressors.

Item Details

Item Type:Refereed Article
Keywords:single-screw compressor, meshing pair, thermal deformation, thermo-mechanical
Research Division:Engineering
Research Group:Mechanical engineering
Research Field:Energy generation, conversion and storage (excl. chemical and electrical)
Objective Division:Energy
Objective Group:Energy storage, distribution and supply
Objective Field:Energy systems and analysis
UTAS Author:Wang, X (Professor Xiaolin Wang)
ID Code:146639
Year Published:2021
Web of Science® Times Cited:1
Deposited By:Engineering
Deposited On:2021-09-20
Last Modified:2021-11-29
Downloads:0

Repository Staff Only: item control page