几何体组合结构素描.ppt

THERMAL ANALYSIS OF MINIATURE CIRCUIT BREAKER
ABSTRACT
With the continuous development of industry and improvement of power transmission and distribution system capacity, the request for the switch of the low voltage apparatus is more strictly. In order to improve the space efficiency of the switching device, another request for the switch es out that is the requirement of miniaturization design. Switching apparatus miniaturization design makes products cooling area reduced, and ponents of the heating make the unit volume heat quantity increase, it has bad influence on the safety and reliability of switch equipment. So how to make the electrical products meet the thermal requirements in miniaturized condition, at the same time, improve the work performance is the key problem to be solved urgently.
New-style miniature circuit breaker as the ponent of advanced power distribution system has a wide range of application, with small volume pact structure characteristics, its working temperature distribution directly influences the aerospace equipment distribution system reliability. Therefore, the importance of its working temperature distribution is self-evident.
In this paper, it illustrates the 3D temperature simulating and thermal analysis on a new-style miniature circuit breaker as the research object by using the analysis software ANSYS based on the finite element method, and gets ponents temperature distribution. Another result is that it obtains the deformation of the bimetallic strip according to the temperature simulation result. Finally, the calculation results pared with the experimental results. Based on the temperature and the deformation result of the simulation, we can put forward the improvement design, to achieve the satisfactory result of temperature distribution, to reduce product design period and improve the design level.
KEY WORDS:circuit breaker, temperature field simulation, bimetallic strip
目录
第一章绪论.........................................