Research on axis orbit of the journal bearing lubricated with oil and refrigerant mixtures in a twin-screw refrigeration compressor

被引：19

作者：

Wang, Chuang ^{[1
]}

Xing, Ziwen ^{[1
]}

Hou, Feng ^{[1
]}

Wu, Huagen ^{[1
]}

Yu, Zhiqiang ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R China

[2] Yantai Moon Corp, Yantai 264000, Peoples R China

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2018年 / 90卷

基金：

美国国家科学基金会;

关键词：

Twin-screw refrigeration compressor; Rotor-bearing system; Axis orbit; Oil refrigerant mixtures; TEMPERATURE HEAT-PUMP; RECOVERY;

D O I：

10.1016/j.ijrefrig.2018.04.008

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In twin-screw refrigeration compressor for high pressure applications, journal bearing has been a preferred option to bear larger and larger radial force. Hence, the stability of rotor-journal bearing system is worth investigating to ensure the reliability of a twin-screw refrigeration compressor, which can be reflected on axis orbit. This paper presents a homogeneous two-phase flow model to calculate the axis orbit of journal bearing used in a twin-screw compressor, considering gas-induced force, unbalanced force and gravitational force. In order to compute gas-induced force acting on bearings by FEM, the p-V indicator diagram is measured experimentally. In addition, axial orbit under different evaporating temperature and different built-in volume ratio was investigated experimentally. Meanwhile it verifies that the proposed two-phase flow model has a good agreement in terms of orbit shape with the experimental result. Moreover, the effects of refrigerant mass fraction at supply groove and structural parameters are analyzed theoretically. (C) 2018 Elsevier Ltd and IIR. All rights reserved.

引用

页码：1 / 11

页数：11

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