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针对FPSO油气泄漏引发的火灾风险,建立热-结构耦合分析模型,采用ANSYS Workbench软件对工艺区设备泄漏、火灾事故及灾害下结构响应进行数值模拟,重点分析工艺处理模块Ⅰ区设备温度分布及热变形情况。通过对比不同油气泄漏速率和环境风速下火灾发展、危害范围和结构受损程度,探讨油气泄漏孔孔径和风速对火灾后果的影响。结果表明:稳定发展火灾下工艺处理模块Ⅰ区设备周围环境维持高温状态;泄漏孔附近结构受损最严重,原油热处理器受火灾损害发生大的变形;随泄漏孔孔径增大,火灾危害范围扩大,结构发生大变形的区域增大,d=40 mm时原油热处理器受损最严重,d=60mm时结构受损区域最大,大部分结构受损程度加剧;来风风速的变大使得火灾更加剧烈,设备受损区域扩大,受损程度加剧,结构火灾风险加大。
Aiming at the fire risk caused by oil and gas leakage caused by FPSO, a thermo-structural coupling analysis model is established. The ANSYS Workbench software is used to simulate the equipment leakage, fire accident and structural response under disaster. The temperature distribution and heat Deformation. By comparing the different oil and gas leakage rate and the development of the fire under the environment wind speed, the harm scope and the damage degree of the structure, the influence of the pore size and the wind speed of the oil and gas on the fire consequences is discussed. The results show that the surrounding environment of equipment in zone Ⅰ of the process development unit under fire of stable development maintains a high temperature condition; the structure near the leakage hole is damaged most seriously, and the crude heat treatment heat exchanger undergoes large deformation due to fire damage. As the aperture of the leak hole increases, , The area with large deformation of structure increases, the damage of crude oil heat-treatment device is the most serious when d = 40 mm, the area with structural damage is the largest when d = 60mm, and most of the structures are damaged more; Severe, equipment damaged area to expand, the degree of damage aggravated, structural fire risk increases.