Structure Design And Analysis Of Acoustic Release

As the country attaches more importance to marine development,more and more investment has been made in ocean research.The marine environment observing system is an important part of marine science and technology.As an essential equipment of the marine monitoring system in place,the acoustic release device is generally hung on the bottom of the marine monitoring system,connecting the anchor block,floating body and various sensors,etc.,and it needs to withstand enormous deep water pressure and system tension.When the marine monitoring system recovers,it responds to or releases operations based on acoustic signals from the water deck unit to recover the ocean monitoring system.This article relies on public science and technology research funds projects of ocean to carry out research work on “acoustic releaser productization”.Firstly,the status of acoustic release devices at home and abroad is introduced,and the gap between domestic and foreign similar technologies is analyzed.This paper presented the structural components of the acoustic releaser and the basic working principle,and proposed the significance.Determine the main research objectives and research content,and this paper presented a structural design scheme and technical route,perform finite element simulation analysis on the acoustic release device structure designed,and complete the hydrostatic pressure experiment and tension experiment,obtain experimental data,and limited Meta simulation data for comparative analysis.In the structural design of the acoustic release device,this article focuses on the design method and design process of the pressure-resistant sealed housing and end cap,as well as the seal design and stability check;then the force distribution of the release structure is analyzed.The force-reducing multiple of the release structure and the magnitude of the force are applied;then the finite element simulation analysis is performed on the pressure-resistant sealed shell of the acoustic releaser to obtain the force simulation situation when it is under normal underwater operation,and at the same time,the release structure is performed.Finite element simulation analysis simulates the distribution of tension force during normal operation.At the end,the acoustic releaser completes the hydrostatic pressure experiment,tensile experiment and seabed deployment recovery experiment,during the hydrostatic pressure experiment and tension experiment process.The strain measurement device was used to record the pressure-resistance sealed shell and release structural strain data of the acoustic release device during the experiment.The deployment and recovery experiments at sea verified the feasibility of the design.During the hydrostatic pressure experiment and tensile experiment,strain measurement devices were used to collect the strain data of each part.According to the results of the simulation analysis and the characteristics of the acoustic release mechanism,several test points were selected to mount the strain gauges to collect data.The analysis results show that under the conditions of hydrostatic pressure of 60 MPa,the pressure of the acoustic release device designed in this paper is less than the permissible stress of the material used in the shell and end cap,which can satisfy the requirements of underwater work.The acoustic release device designed in this paper is released under the condition of 5000kg(49000N)tension,and the release structure can meet the design requirements and work requirements.The above work has guiding and reference significance for structural design of the acoustic release in the future.