Development Of Detecting And Replenishing Technology And Equipment For Capsizing Ship

With the increasing prosperity of the water transport industry,the number of ships coming and going increases rapidly,and the frequency of ship accidents also increases.Ship capsized is a common type of accident,because there is a certain amount of air in the cabin to form an air layer,so that the wrecked hull can float on the water,part of the ship personnel can not escape,trapped in the inside of the capsized ship.In order to improve the efficiency of capsized ship rescue,this thesis analyzes the advantages and disadvantages of different detection modes of traditional rescue modes,and designs detection and replenishment equipment for capsized ship rescue to effectively utilize the rescue time before the hull is fixed and improve the efficiency of rescue.The equipment is composed of detection module,supply module,main shell,plugging mechanism and other parts.When rescuing the trapped people in the capsized ship,the equipment should be placed on the bottom of the ship for detection using the detection module.After the trapped people are found,the supply module will be used for material supply to appease the trapped people.Using the finite element analysis method,the strength check and lightweight design of the equipment are carried out.Then it analyzes the different factors that may affect the equipment in the actual work,and uses the simulation software to simulate the corresponding working conditions for analysis.The control system of the device was designed.According to the actual work flow,the test-bed was built and tested to verify the rationality and safety of the device design.The specific research contents of this thesis are as follows:(1)By comparing the characteristics of the diver detection mode and the open hole detection mode in the traditional detection mode,the technical requirements and design indicators of the capsizing ship detection and replenishing equipment are determined.According to the installation position of the equipment,the equipment is divided into three areas: the successful module,the main shell and the bottom plugging mechanism,and a variety of schemes are designed for each area.After comparing different schemes,the final structure form is determined.Then detailed design of the size of each component,and different contact surface between the sealing way.(2)Parameterized modeling of the equipment size and checking the strength of the equipment.Based on response surface analysis(RSM),the lightweight design of the overturned ship detection and replenishment equipment is carried out.The design variable is the size of the equipment that can be changed,the constraint condition is the maximum deformation and maximum stress of the equipment under ideal working conditions,and the optimization objective is the heavy weight of the equipment.The sensitivity of each parameter to the output of the device and the final optimized size of the device were obtained through lightweight analysis.3)Three different working conditions that may be encountered by the overturned ship detection and replenishing equipment in practical application are analyzed,including wind load,water load and load caused by accidental fall of staff.The simulation analysis of the equipment is carried out through finite element software,and the reliability of the equipment is verified under different working conditions.(4)Process the equipment entity,and build the test bed and control circuit.The data acquisition and control system was built based on Lab VIEW software,and the sealing and pressure stabilization tests were carried out on the equipment.Through the tests,the sealing reliability of the equipment and the rationality of the control scheme were proved.