单点系泊用10.5 kV/600 A中压电滑环温度场数值模拟分析

Numerical Simulation of Effect of Joule Heat on Temperature Field of 10.5 kV/600 A Mid-Voltage Slip Ring for Single Mooring of FPSO

针对单点系泊系统10.5 kV/600 A中压电滑环设计中电流对产品温度异常升高的问题,对中压电滑环的载流能力和产生的焦耳热关系进行数值分析:10.5 kV/600 A中压滑环及其摩擦副的焦耳热与电流的二次方成正比,在法向载荷和速度保持不变的情况下,随着电流增大,焦耳热引起的温升在温度变化值中比例显著增大;由于单点系泊系统用10.5 kV/600 A中压滑环的转动摩擦磨损速度低于1 r/min,在载流水平保持不变的情况下,由电流产生的焦耳热对温度场的影响最大。

Aiming at the abnormal temperature rise of the 10.5 kV/600 A mid-voltage slip ring in the single-point mooring system of FPSO, the relationship between the current carrying capacity and Joule heat of the mid-voltage slip ring is analyzed numerically. The Joule heat of the mid-voltage slip ring and its friction pair is proportional to the quadratic of the current. When the normal load and velocity remain unchanged, the ratio of temperature rise caused by Joule heat to temperature change increases significantly with the increase of the current. Since the rotating friction wear velocity of the 10.5 kV/600 A mid-voltage slip ring is lower than 1 R/min, when the current carrying level is constant, the Joule heat caused by the current accounts for the largest proportion in the analysis of the influence on temperature field.