Research On Modeling And Simulation Of Marine Auxiliary Boiler System

Marine auxiliary boiler is an important part of marine auxiliary equipment,With the increasing degree of ship automation and the extensive application of computer simulation technology in the automation of the engine room,the technical requirements for the management of marine engineers are getting higher and higher.The simulation system of marine auxiliary boiler is mostly for large oil tanker.The modeling and simulation about small fired boiler is simplification too much and the division is rough,so it is often difficult to obtain satisfactory simulation results.This article takes the small and medium sized auxiliary boiler of the Atlantic project in Dalian Maritime University as the research object,the function composition and the principle of control process are analyzed,the theoretical research on the marine auxiliary boiler system and how to realize the modeling and simulation of marine auxiliary boiler system are carried out.The auxiliary boiler system is divided into several parts,such as boiler body,fuel system,water supply system,steam water system and so on,The oil fired boiler is divided into the chamber of furnace zone,the first convection zone,the second convection zone,the metal zone,the water and steam zone.Based on the basic theory of energy conservation,mass conservation,thermodynamics and heat transfer,the mathematical models of each subsystem of the auxiliary boiler of small cargo ship are established.According to the mathematical model of each subsystem,the sub model of auxiliary boiler simulation system is created by using Matlab/Simulink simulation tool,connecting the sub model according to the operating principle and the work order,a set of auxiliary boiler simulation system aiming at the small and medium sized cargo ship is designed.The simulation system is designed and developed by using C#.a set of multifunctional ship auxiliary boiler simulation system is designed,testing and debugging the ultimately system to find and solve the existing problems and the formation of the final system with perfect function,the simulation results are compared with the actual data to verify the accuracy of the system.On this basis,this article analyzes and summarizes the problems in the whole design process and puts forward some solutions.