有哪些信誉好的足球投注网站Thermal-hydraulic modelling and analysis of hydraulic damper for impact cylinder with large flow.pdf
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Thermal-hydraulic modelling and analysis of hydraulic damper for impact cylinder with large flow
1108 ? VIBROENGINEERING. JOURNAL OF VIBROENGINEERING. SEPTEMBER 2013. VOLUME 15, ISSUE 3. ISSN 1392-8716
1036. Thermal-hydraulic modelling and analysis of
hydraulic damper for impact cylinder with large flow
Y. Guo, C. P. Liu, B. W. Luo
1036. THERMAL-HYDRAULIC MODELLING AND ANALYSIS OF HYDRAULIC DAMPER FOR IMPACT CYLINDER WITH LARGE FLOW.
Y. GUO, C. P. LIU, B. W. LUO
Y. Guo
1
, C. P. Liu
2
, B. W. Luo
3
1
Engineering Research Centre of Advanced Mining Equipment, Ministry of Education
Hunan University of Science and Technology, Xiangtan, China
2
College of Mechanical and Electrical Engineering, Central South University, Changsha, China
3
Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Xiangtan, China
1
Corresponding author
E-mail:
1
gy012702@163.com,
2
liuchengpei2008@163.com,
3
luobow@163.com
(Received 3 May 2013; accepted 4 September 2013)
Abstract. The hydraulic damper has a great sense for impact machine to extend life and improve
the environmental performance. The objective of this paper is to provide a systematic investigation
to design or evaluation of a hydraulic damper used in the impact machine. A novel hydraulic
damper using guiding sleeve to enlarge buffer chamber area is designed and manufactured by
ingenious tactics. The performance of a prototype hydraulic damper is acquired by the test. A
nonlinear thermal-hydraulic model for the hydraulic damper is presented by analyzing the internal
fluid dynamic phenomenon and heat transfer with respect to the prototype. Comparisons between
test data and simulation result confirm the validity of the thermal-hydraulic model. In the
meantime, evaluation of the importance of some key factors using the model for designing is
discussed. It shows the influence of orifice diameter, inner diameter of buffer chamber and setting
pressure of the relief valve to hydraulic damper characteristics with large flow, which gives a
theoretical basis to design and optimize
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