Experimental study on pad temperature and film thickness of tilting-pad journal bearings with an elastic-pivot pad. (August 2015)

• Record Type: Journal Article
• Authors: Zhang, Fan; Ouyang, Wu; Hong, Honglun; Guan, Yongsheng; Yuan, Xiaoyang; Dong, Guangneng
• Is Part Of: Tribology international. Volume 88(2015)
• Page Start: 228
• Page End: 235
• Publication Date: 2015-08
• Subjects: Tilting-pad journal bearing -- Pad temperature -- Film thickness -- Dynamic balancing machine; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2015.03.030
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: For the failure damage of local melting caused by a high temperature rise of an in-service bearing, which is a three-pad tilting-pad journal bearing with an 800 mm diameter and is used to support a 1150 MW nuclear power generator, the structural parameters of the bearing were redesigned and an experimental study was performed to investigate the pad temperatures and film thicknesses of the redesigned bearing and the in-service bearing on a dynamic balancing machine. Test results indicate that the test scheme is feasible and effective, and the redesigned bearing has better performances than the in-service bearing. Highlights: The real-size three-pad TPJB with a 800 mm diameter and with an elastic-pivot on the upper pad. The two real-size bearings have different structural parameters and were tested at the same time by supporting a generator shaft. The pad temperature and film thickness distribution of the bottom pads were measured. The film thicknesses were measured by displacement sensors that installed on the bottom pad.