水下连接器振动特性研究及其测试装置设计

发布时间：2018-04-27 05:05

本文选题：水下连接器 + 振动测试装置　；参考：《哈尔滨工程大学》2014年硕士论文

【摘要】：水下连接器振动测试装置是工业和信息化部海洋工程装备科研项目“水下连接系统及关键设备研制”的子课题“深水水下连接器及其配套工机具测试技术和装备研究”的研究内容之一。主要研究目的是研制出具有自主知识产权的水下连接器振动测试装置,该装置可以模拟水下连接器应用工况对其进行轴向和径向2个方向的振动测试。水下连接器振动测试装置的研制提高了我国在海洋工程装备上的自主研发能力,从而逐渐摆脱对国外相关技术的依赖,增强了我国在海洋工程开发的实力。水下连接器所承受的环境包括浪、波和地震载荷等,其中最主要的是由波浪和海流引起的管道的涡激振动。水下连接器作为海底井口的连接枢纽,因此跨接管的振动直接导致水下连接器的振动。通过对水下连接器海况进行调研,同时结合涡激振动、流体力学、材料力学及海洋工程相关经典理论对水下连接器进行振动分析,最终得出水下连接器所受振动的最大振幅及频率。通过对水下连接器的振动分析,确定了水下连接器振动测试装置的关键技术指标,并且选择液压振动装置的振动原理作为水下连接器振动测试装置的设计理念。根据水下连接器振动测试装置所确定的基本要求,拟定了水下连接器振动测试装置的机械系统、液压系统及控制系统的总体方案。根据水下连接器振动测试装置的总体方案对装置的机械系统进行详细的设计,其中包括对水下连接器所承受的载荷进行分析,根据载荷特点,对结构进行设计。利用UG NX8.0对机械结构建立三维模型,并且使用有限元分析软件ANSYS Workbench对系统结构进行模态分析,得出结构的6阶固有频率,通过系统的固有频率与振动频率相比较,验证结构设计的合理性。根据水下连接器振动测试装置的总体方案,对其液压伺服控制系统进行研究并设计,同时拟定出液压伺服系统的原理图。根据机械设计手册中液压传动及液压控制的知识对液压伺服系统元件的参数进行计算并选型。利用AMESim软件对液压伺服系统进行建模及仿真,模拟水下连接器在指定频率、振幅的振动测试时的实际情况得出液压系统工作的相关曲线,并进行分析。
[Abstract]:Vibration testing device of underwater Connector is a sub-project of "underwater connection system and key equipment development", which is a scientific research project of marine engineering equipment of Ministry of Industry and Information Technology. "Deepwater underwater Connector and its supporting equipment testing Technology and equipment" Research is one of the contents of the study. The main purpose of this study is to develop an underwater connector vibration testing device with independent intellectual property rights. The device can simulate the application of underwater connector to carry out vibration testing in two directions: axial and radial. The development of underwater connector vibration testing device has improved the independent research and development ability of our country in marine engineering equipment, thus gradually getting rid of the dependence on foreign related technology and strengthening the strength of our country in marine engineering development. Underwater connectors are subjected to waves, waves and seismic loads, the most important of which is the vortex-induced vibration of pipes caused by waves and currents. The underwater connector is the connection hub of the bottom wellhead, so the vibration of the cross-nozzle directly leads to the vibration of the underwater connector. By investigating the sea condition of underwater connectors, combining with vortex-induced vibration, hydrodynamics, mechanics of materials and classical theories of ocean engineering, the vibration analysis of underwater connectors is carried out. Finally, the maximum amplitude and frequency of the vibration of the underwater connector are obtained. By analyzing the vibration of the underwater connector, the key technical indexes of the vibration testing device of the underwater connector are determined, and the vibration principle of the hydraulic vibration device is selected as the design concept of the vibration testing device of the underwater connector. According to the basic requirements of underwater connector vibration testing device, the general scheme of mechanical system, hydraulic system and control system of underwater connector vibration test device is worked out. According to the overall scheme of vibration testing device for underwater connector, the mechanical system of the device is designed in detail, including the analysis of the load borne by the underwater connector, and the design of the structure according to the characteristics of the load. The 3D model of mechanical structure is established by UG NX8.0, and the modal analysis of the system structure is carried out by using the finite element analysis software ANSYS Workbench. The sixth order natural frequency of the structure is obtained, and the natural frequency of the system is compared with that of the vibration frequency. Verify the rationality of the structure design. According to the overall scheme of vibration testing device for underwater connector, the hydraulic servo control system is studied and designed, and the schematic diagram of hydraulic servo system is worked out. According to the knowledge of hydraulic transmission and hydraulic control in mechanical design manual, the parameters of hydraulic servo system are calculated and selected. The hydraulic servo system is modeled and simulated by AMESim software. The actual situation of underwater connector in vibration test of specified frequency and amplitude is simulated and the relevant curve of hydraulic system is obtained and analyzed.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P742

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