船閘液壓啟閉系統(tǒng)的狀態(tài)監(jiān)測及仿真研究
[Abstract]:The project of water conservancy project plays an irreplaceable role in the life of the people today because it undertakes many important functions such as water transportation, flood control, hydropower and so on. As an important part of the lock system of hydraulic lock, the lock hydraulic hoist will lead to the abnormal opening and closing of the lock if it breaks down, resulting in the paralysis of the whole waterway. Restricted by the existing technical conditions, most of the domestic shiplock systems have problems such as low level of operation and management, low maintenance efficiency of equipment and facilities, which is not conducive to the long-term safety, stability and efficient operation of the lock. The condition monitoring system of hydraulic hoist system of ship lock can effectively monitor the working condition of every component of hydraulic system, which not only saves manpower, but also can be found in time for minor parameter aberration. Can effectively avoid the occurrence of major failures. Taking Gezhouba shiplock system as a reference, this paper first summarizes the whole situation of Gezhouba hydraulic project and the operation principle of lock hydraulic hoist, and points out the problems existing in the current operation management of hydraulic hoist. Then, according to the requirement of the system, the whole design idea of the state monitoring system is put forward, and the corresponding sensor layout scheme is put forward. Combined with the characteristics of hydraulic hoist system of ship lock and the theory of power bond graph analysis, the influence of common faults on each measuring point is analyzed and combed, and then the data is analyzed by grey correlation degree theory. The selection of measuring points for measuring sensors is optimized. In order to further verify whether the selection of measuring points is scientific and accurate, this paper selects the components and sets the parameters according to the relevant data of the research object. Finally, the hydraulic hoist system is simulated and modeled by AMESim software. The state of internal operation of the system is also analyzed. On the basis of establishing the normal working condition model, this paper establishes the AMESim simulation model for the oil cylinder leakage and the hydraulic pump "cavitation" fault, and analyzes the dynamic data of different measuring points in the fault mode. And compared with the dynamic data under normal working conditions, the correctness of the measurement point selection of the monitoring system is verified.
【學(xué)位授予單位】:大連海事大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:U641
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