To design a excellent performance and highly reliable hydraulic buffer of spring operating mechanism

it should analyze the flow field character and oil cylinder strength. Firstly

base on the CFD technology

this article major in geometric modeling

iterative and simulation for hydraulic buffer of 252 kV CB by the dynamic mesh model function in FLUENT software. And then getting the pressure nephogram of hydraulic buffer internal flow field when the circuit breaker is under opening operation. Next

analyze the flow field character of model key part.According to the result

this article also do the finite element analysis by Ansys Workbench for the hydraulic buffer working condition when it under the biggest oil pressure

and get the stress and strain nephogram. After referring to the material yield strength

an improved plans are submitted. This paper provides a new method for design and research of buffer of spring operating mechanism

which has very strong application value.