LI Furong. Design and Optimization of Stiffener of Circuit-breaker’s Gas Box in a SF6 Gas Insulated Ring-network Cabinet[J]. High voltageapparatus, 2020, 56(2): 226-231.
LI Furong. Design and Optimization of Stiffener of Circuit-breaker’s Gas Box in a SF6 Gas Insulated Ring-network Cabinet[J]. High voltageapparatus, 2020, 56(2): 226-231. DOI: 10.13296/j.1001-1609.hva.2020.02.034.
This study is aimed at the problems that the gas box of circuit breaker in a 40.5 kV SF
6
gas insulated ringnetwork cabinet suffers excessive deformation and local stress concentration of its weld exceeds the allowable stress after inflation
which will result in gas leakage risk.The sectional inertia moment of the stiffener is calculated to analyze the influence of the stiffener design on the strength of the gas box.Then the software Ansys is used to perform structural strength simulation analysis of the gas box to obtain its deformation and the local stress distribution.Without increasing the number of the stiffeners and adjusting their welding positions
an optimized stiffener design an
d layout scheme of the gas box with better structural strength are achieved
which can reduce the deformation of the air box and make the local stress of each part of the gas box within the allowable stress range of the material.