船舶双燃料发动机LNG供气系统模拟仿真技术应用研究

Application research on simulation technology of vessel gas supply system

数字孪生技术能够打破信息空间和物理空间信息交互融合的界限,利用数字孪生技术,把复杂工艺流程的物理对象在数字化环节中模拟拷贝,仿真工艺对象在现实环境中的行为动作。本文针对船舶双燃料发动机LNG供气系统,阐述其运动学模型的构建方法、工艺流程的搭建过程以及自动化模型的程序编制,模拟供气系统恒压供气和变压供气2种运行工况,分析LNG供气系统模拟仿真数据,验证供气系统工艺流程及控制逻辑合理性,探讨了模拟仿真技术对于船舶供气系统研制的指导意义。

Digital twin technology can break the boundary between information space and physical space information interaction and fusion. Using digital twin technology, the physical objects of complex process flow are simulated and copied in the digital link to simulate the behavior of process objects in the real environment. Aiming at the LNG gas supply system of marine dual fuel engine, this paper expounds the construction method of kinematic model, the construction process of process flow and the programming of automatic model, simulates the two operating conditions of constant pressure gas supply and variable pressure gas supply of gas supply system, analyzes the simulation data of LNG gas supply system, and verifies the rationality of process flow and control logic of gas supply system, The guiding significance of simulation technology for the development of ship gas supply system is discussed.