船闸液压启闭系统的状态监测及仿真研究

发布时间：2018-07-21 11:30

【摘要】：水利枢纽工程承担着水运、防洪、水电等多项重要的职能,在当今的国民生活中发挥着不可替代的作用。船闸液压启闭机作为水利枢纽船闸系统中的重要组成部分,一旦发生故障,将直接致使船闸启闭不正常,导致整个水运航线的瘫痪。受到现有技术条件的制约,目前国内的大部分船闸系统存在运行管理精细化水平不高、设备及设施维护效率不高等问题,不利于船闸实现长期安全、稳定、高效运行。船闸液压启闭系统的状态监测系统能够对液压系统各元件的工况实现有效的监控,不仅节省了人力,而且对于细微的参数失常也能做到及时的发现,能够有效避免重大故障的发生。本文以葛洲坝船闸系统为参照,首先概述了葛洲坝水利枢纽工程的整体情况及船闸液压启闭机的运行原理,指出了液压启闭机目前运行管理中存在的问题。随后,针对系统需求,提出了状态监测系统的整体设计思路,提出了相应的传感器布设方案。重点结合船闸液压启闭系统特点,结合功率键合图分析理论,分析了常见故障对各个测量点的影响并进行梳理,随后通过灰色关联度理论进行数据分析,对测量传感器的测量点的选择进行优化。为进一步验证测量点的选择是否科学准确,本文针对研究对象的相关数据进行元件的选型及参数设定,最后通过AMESim软件对液压启闭系统进行仿真建模,并分析了系统内部运行的状态。在建立了正常工况模型的基础上,本文针对油缸泄漏、液压泵"气穴"两种故障建立AMESim仿真模型,对不同测量点在故障模式下的动态数据进行分析,并与正常工况下的动态数据进行对比,验证监测系统测量点选择的正确性。
[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.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U641

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