高压断路器螺旋弹簧触指分析及计算

摘要: 触指是高压断路器最核心的部件，计算其接触压力、分析滑动摩擦力的变化是研究断路器机构动态特性的关键。以螺旋弹簧触指的结构特点为基础，列出弹簧触指标准化尺寸。将一个节距的弹簧触指简化为一端固定的当量悬臂梁，建立了触指径向变形量和接触压力的变化方程，运用辛普森数值积分法进行计算，考虑不同型号触指参数对额定圈数的影响，得到触指滑动摩擦力的变化规律。
- 高压断路器 /
- 螺旋弹簧触指 /
- 接触压力 /
- 滑动摩擦力
Abstract: Contact is the core of the high-voltage circuit breaker, calculations of the contact pressure and analysis of the sliding friction change are the key points for the study of dynamic characteristics of high-voltage circuit breaker mechanism. In this paper, standardized dimensions of spring contact were listed based on structural features of screw spring contact. On the basis that one pitch of spring was considered as an equivalent cantilever, governing equations of radial deformation and pressure of spring contact were established and calculated by using Simpson numerical integration method. the changing rule of sliding friction was received by considering the effects of different type contact parameters on the rated laps of contact at the same time.
- high-voltage circuit breaker /
- screw spring contact /
- contact pressure /
- sliding friction

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参考文献(15)

[1]	Qiang R C, Rang M Z. Simulation of the contact resistance of high voltage apparatus with the method of coupling contact surface[C]//Proceedings of the 2nd International Conference on Electric Power Equipment, Matsue: IEEE, 2013:1-4
[2]	Medina S, Nowell D, Dini D. Analytical and numerical models for tangential stiffness of rough elastic contacts[J]. Tribology Letters, 2013,49(1):103-115
[3]	Hewitson L G, Brown M, Balakrishnan R. Circuit breakers[M]. Hewitson L G, Brown M, Balakrishnan R. Practical Power System Protection, Oxford: Newnes, 2005:70-82
[4]	文化宾,宋永端,邹积岩,等.新型126kV高压真空断路器的设计及开断能力试验研究[J].中国电机工程学报,2011,31(34):198-204 Wen H B, Song Y D, Zou J Y, et al. Test on novel design and breaking capacity for 126 kV high voltage vacuum circuit breaker[J]. Proceedings of the CSEE, 2011,31(34):198-204 (in Chinese)
[5]	李健.浅析弹簧触指在GIS中的应用[J].高压电器,2007,43(6):438-439 Li J. Application of the canted coil spring to GIS[J]. High Voltage Apparatus, 2007,43(6):438-439 (in Chinese)
[6]	Chen Y J, Tang W C. Dynamic contact stiffness analysis of a double-nut ball screw based on a quasi-static method[J]. Mechanism and Machine Theory, 2014,73:76-90
[7]	Taktak M, Omheni K, Aloui A, et al. Dynamic optimization design of a cylindrical helical spring[J]. Applied Acoustics, 2014,77:178-183
[8]	Chen F C. Dynamic response of spring-type operating mechanism for 69 kV SF6 gas insulated circuit breaker[J]. Mechanism and Machine Theory, 2003,38(2):119-134
[9]	Chen F C, Tzeng Y F. On the dynamics of spring-type operating mechanism for 69 kV SF6 gas insulated circuit breaker in open operation[J]. Computers & Structures, 2002,80(22):1715-1723
[10]	Kaoua S A, Taibi K, Benghanem N, et al. Numerical modelling of twin helical spring under tensile loading[J]. Applied Mathematical Modelling, 2011,35(3):1378-1387
[11]	刘伟,徐兵,杨华勇,等.高压断路器液压操动机构特性分析[J].机械工程学报,2010,46(10):148-155 Liu W, Xu B, Yang H Y, et al. Characteristic analysis of high voltage circuit breaker with hydraulic operating mechanism[J]. Journal of Mechanical Engineering, 2010,46(10):148-155 (in Chinese)
[12]	王时龙,张明明,周杰,等.振动状态下螺旋弹簧运动状态模型[J].机械工程学报,2012,48(1):78-83 Wang S L, Zhang M M, Zhou J, et al. Motion model of helical springs under vibrational condition[J]. Journal of Mechanical Engineering, 2012,48(1):78-83 (in Chinese)
[13]	过家春,张庆国,章林忠,等.基于第二类椭圆积分的椭圆弧长公式变换与应用[J].数学的实践与认识,2011,41(24):210-216 Guo J C, Zhang Q G, Zhang L Z, et al. Transformation formulas for the elliptic arc length and its application based on the elliptic integral of the second kind[J]. Mathematics in Practice and Theory, 2011,41(24):210-216 (in Chinese)
[14]	商泽进,王忠民.形状记忆合金梁的非线性弯曲变形[J].机械工程学报,2011,47(18):28-32 Shang Z J, Wang Z M. Nonlinear bending deformation of shape memory alloy beam[J]. Journal of Mechanical Engineering, 2011,47(18):28-32 (in Chinese)
[15]	黎斌.SF6高压电器设计[M].3版.北京:机械工业出版社,2009 Li B. SF6high voltage electric apparatus design[M]. 3rd ed. Beijing: Machinery Industry Press, 2009 (in Chinese)