【作者】 张驰；

【导师】 贾鹏；

【作者基本信息】 哈尔滨工程大学 ， 机械工程， 2018， 硕士

【摘要】 水下生产系统是海洋油气开发的重要生产方式,其中全电式水下生产系统具有响应速度快,功耗小,成本低,扩展性强,零排放等优点,更适应于深水环境下的油气井开发,是未来海洋油气开发的重要方向。全电式水下控制模块是全电式水下生产系统的核心装备,本课题研制出国内首台500米水深全电式水下控制模块原理样机。本论文完成了全电式水下控制模块总体方案设计与结构研究,搭建了双冗余控制系统,并完成了全电式水下控制模块原理样机的实验研究,具体完成的工作如下:在分析了全电式水下控制系统工作原理的基础上,提出了全电式水下控制模块的设计要求以及性能指标,完成了全电式水下控制模块机械结构及电气系统的总体方案设计。完成了耐压壳体、对接锁紧机构、水下ROV操作电连接器的结构研究。针对水下电子模块及驱动箱,采用有限元法完成了二者的温度场分析、耐压壳体强度及稳定性分析。完成了锁紧机构的结构设计,通过对锁紧过程的力学分析和锁紧块、剪断销的ANSYS仿真,完成了锁紧块斜面接触强度与剪断销剪切强度分析。完成了对接盘的布局设计,确定了对接盘上电连接器布置方式,完成了对中精度的计算及对接盘的ANSYS应力应变分析,保证了对接盘上电连接器的安全稳定插拔。提出了水下ROV操作电连接器设计要求及性能指标,完成了整体结构设计。提出了基于滑销套管式动密封结构和锁紧钩解锁环式插拔结构,实现了电连接器的水下ROV操作带电插拔。依据线弹性理论,完成了水下ROV操作电连接器在插拔过程中锁紧机构力学模型的建立与插拔力的分析。采用变形能法完成了插拔过程中锁紧环与锁紧钩形变与力的分析,通过理论推导得到了插拔力与锁紧钩形变量的关系式,得到了插拔力的最大值。通过对水下ROV操作电连接器的模型简化,完成了温度场的数值模拟,得到了接触电阻与环境温度对水下ROV操作电连接器温度场的影响。针对双冗余控制系统的特点,对水下电子模块控制模块与控制电路进行了详细设计。硬件上两套水下电子模块系统热备份方式,采用软硬件可剪裁的PC104板卡技术完成了双冗余控制系统的硬件搭建,实现了控制系统的功能冗余化,采用冗余供电技术实现了电力输送的冗余化,极大的提高了水下控制系统的可靠性与稳定性;基于Vxworks嵌入式实时操作系统,完成了水下电子模块多任务程序设计,完成了软件系统主作业模块、CAN通讯模块、数据采集模块以及TCP通讯模块的详细设计。基于永磁同步电机驱动技术,完成了驱动系统的硬件及软件的详细设计,从而实现了对全电式阀门执行器的驱动。针对全电式水下控制模块所需验证的功能,完成了全电式水下控制模块测试平台的搭建。完成了对所设计500米水深全电式水下控制模块原理样机的功能测试。通过对全电式水下控制模块的监测功能、控制功能及机械功能的完整测试,验证了全电式水下控制模块功能的完整性和可靠性。所研制的全电式水下控制模块达到设计要求。更多还原

【Abstract】 Seabea production system is an important production method for offshore oil and gas development.The all-electric Subsea production system has the advantages of fast response,low power consumption,low cost,strong expansibility,zero emission and so on.The all-electric subsea production system is more suitable for the development of oil and gas wells in the deep water environment,and it is an important direction for the future development of marine oil and gas.The Electric Subsea Control Module(ESCM)is the core equipment of the all-electric subsea production system.In this subject the first prototype of the 500 meters water depth ESCM in China is developed.In this paper,the design of ESCM and the analysis of the key structure are completed,a dual redundant control system is built,and the experimental research of the ESCM prototype is completed.The work completed is as follows:Fully investigate the domestic and foreign subsea production system,study the related technologies of all-electric subsea control system,put forward the design requirements and performance indicators of ESCM,and complete the overall design of ESCM mechanical structure and electrical system.The structure of the pressure resistant shell,the butt locking mechanism and the subsea ROV operating electrical connector are completed.For the Subsea Electrics Module and drive box,using the finite element method to complete the two temperature field analysis,strength and stability of the pressure hull analysis.The structural design of the locking mechanism is completed.Through the mechanical analysis of the locking process and the ANSYS simulation of the locking block and the shear pin,the contact strength of the locking block and the shear strength of the shear pin are analyzed.The layout of the docking tray is completed,the layout of the electrical connectors on the docking tray is determined,the alignment accuracy calculation and the ANSYS stress and strain analysis of the docking tray are completed,and the secure and stable docking and docking of the electrical connectors on the tray is ensured.The design requirements and performance indexes of subsea ROV operating electrical connector are proposed,and the overall structure design is completed.A slip ring pin-type dynamic sealing structure and a locking hook unlocking ring plug-instructure are proposed,which realizes subsea ROV operating electrical connector.According to the theory of linear elasticity,the establishment of the mechanical model of the locking mechanism and the analysis of the insertion and extraction force of the subsea ROV operating electrical connector are completed.The deformation and force analysis of the locking ring and the locking hook are completed by the deformation energy method.The relationship between the insertion force and the locking hook deformation is deduced theoretically,and the maximum insertion removal force was obtained.Through the simplification of the model of the ROV connector,the numerical simulation of the temperature field is completed and the influence of the contact resistance and the ambient temperature on the temperature field of the subsea ROV operating electrical connector is obtained.According to the characteristics of dual redundancy control system,the control module and control circuit of underwater electronic module are designed in detail.Hardware,two sets of Subsea Electrics Module system hot backup mode,the use of hardware and software can be tailored PC104 board technology to complete the dual redundancy control system hardware to achieve the control system function redundancy,using redundant power supply technology The power transmission redundancy,which greatly improves the reliability and stability of the subsea control system;based on the Vxworks embedded real-time operating system,completed the underwater electronic module multitasking program design,completed the software system master module,CAN communication module,data acquisition module and TCP communication module detailed design.Based on the drive technology of permanent magnet synchronous motor,the detailed design of the hardware and software of the drive system is completed,so as to realize the drive of the all-electric valve actuator.In view of the function that ESCM needs to verify,the building of the ESCM test platform is completed.The function test of the ESCM principle prototype of the 500 meters water depth is completed.The integrity and reliability of the ESCM function is verified through the complete monitoring experiment of ESCM’s monitoring function,control function and mechanical function.The response of the control system is real-time,accurate and stable.The developed ESCM meets the design requirements.更多还原