The Research of the Jam Fault Features and Diagnostic Methods of the Slide Valve Oil Motive Based on DEH Data

Abstract:

The jam fault diagnosis of slide valve oil motive has great significance on the safe and stable operation of steam turbine. As limited data available from DEH, the jam fault is difficultly diagnosed directly by DEH data. This paper defines insensitivity to represent the level of the jam fault of slide valve oil motive system. Through the simulation and research of the jam fault features of the slide valve oil motive, the relationship between the rate of change of the input signal and the insensitivity of the jam fault diagnosis is be found . Then jam fault diagnosis strategy based on DEH data was put forward and it shows good results with verification by the actual data.

• Periodical: Advanced Materials Research (Volumes 860-863)
• Pages: 1791-1795
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.860-863.1791
• Online since: December 2013
• Authors: Yong Xin Feng, Sun Cai, Chong Ming Song, Si Jia Wei, Jin Fu Liu, Da Ren Yu
• Keywords: DEH Data, Diagnosis, Features, Jam Fault, Slide Valve Oil Motive

References

[1] Rusheng Zhou, Zong Xia Jiao, Shaoping Wang: Mechanical Engineering Vol. 42 (2006), pp.6-14 (in Chinese).

[2] Jin Wu, Tingtao Ming, Jianchun Shen: Hydraulic and pneumatic Vol. 6 (2011), pp.13-16 (in Chinese).

[3] Weibo Li, Wenkui Wang, Jun Ye, Xiaoli Qiao: Machine Tool & Hydraulics Vol. 4 (2006), pp.103-105 (in Chinese).

[4] Guoli Liu, Wei Gao, Shuhong Huang: Huazhong University of Science and Technology Vol. 32, pp.36-38 (in Chinese).

[5] Wenjin Hu, Donghua Zhou: System Simulation Vol. 21 (2009), pp.7553-7555 (in Chinese).

[6] Xiangming Liu: Model-based fault diagnosis method of application. Harbin: Harbin Engineering University (2004) (in Chinese).

[7] Daren Yu: Turbine Regulating System failure mechanism and jam detection method. Harbin: Harbin Institute of Technology (1996) (in Chinese).