水下連接器振動特性研究及其測試裝置設(shè)計
本文選題:水下連接器 + 振動測試裝置 ; 參考:《哈爾濱工程大學》2014年碩士論文
【摘要】:水下連接器振動測試裝置是工業(yè)和信息化部海洋工程裝備科研項目“水下連接系統(tǒng)及關(guān)鍵設(shè)備研制”的子課題“深水水下連接器及其配套工機具測試技術(shù)和裝備研究”的研究內(nèi)容之一。主要研究目的是研制出具有自主知識產(chǎn)權(quán)的水下連接器振動測試裝置,該裝置可以模擬水下連接器應(yīng)用工況對其進行軸向和徑向2個方向的振動測試。水下連接器振動測試裝置的研制提高了我國在海洋工程裝備上的自主研發(fā)能力,從而逐漸擺脫對國外相關(guān)技術(shù)的依賴,增強了我國在海洋工程開發(fā)的實力。水下連接器所承受的環(huán)境包括浪、波和地震載荷等,其中最主要的是由波浪和海流引起的管道的渦激振動。水下連接器作為海底井口的連接樞紐,因此跨接管的振動直接導(dǎo)致水下連接器的振動。通過對水下連接器海況進行調(diào)研,同時結(jié)合渦激振動、流體力學、材料力學及海洋工程相關(guān)經(jīng)典理論對水下連接器進行振動分析,最終得出水下連接器所受振動的最大振幅及頻率。通過對水下連接器的振動分析,確定了水下連接器振動測試裝置的關(guān)鍵技術(shù)指標,并且選擇液壓振動裝置的振動原理作為水下連接器振動測試裝置的設(shè)計理念。根據(jù)水下連接器振動測試裝置所確定的基本要求,擬定了水下連接器振動測試裝置的機械系統(tǒng)、液壓系統(tǒng)及控制系統(tǒng)的總體方案。根據(jù)水下連接器振動測試裝置的總體方案對裝置的機械系統(tǒng)進行詳細的設(shè)計,其中包括對水下連接器所承受的載荷進行分析,根據(jù)載荷特點,對結(jié)構(gòu)進行設(shè)計。利用UG NX8.0對機械結(jié)構(gòu)建立三維模型,并且使用有限元分析軟件ANSYS Workbench對系統(tǒng)結(jié)構(gòu)進行模態(tài)分析,得出結(jié)構(gòu)的6階固有頻率,通過系統(tǒng)的固有頻率與振動頻率相比較,驗證結(jié)構(gòu)設(shè)計的合理性。根據(jù)水下連接器振動測試裝置的總體方案,對其液壓伺服控制系統(tǒng)進行研究并設(shè)計,同時擬定出液壓伺服系統(tǒng)的原理圖。根據(jù)機械設(shè)計手冊中液壓傳動及液壓控制的知識對液壓伺服系統(tǒng)元件的參數(shù)進行計算并選型。利用AMESim軟件對液壓伺服系統(tǒng)進行建模及仿真,模擬水下連接器在指定頻率、振幅的振動測試時的實際情況得出液壓系統(tǒng)工作的相關(guān)曲線,并進行分析。
[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.
【學位授予單位】:哈爾濱工程大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:P742
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