行星齿轮流量计的理论研究

发布时间：2018-06-10 18:49

本文选题：齿轮流量计 + 优化设计　；参考：《安徽理工大学》2016年硕士论文

【摘要】：随着我国经济的蓬勃发展以及对自动化工业生产水平需求的不断提高,对流量信号的测量要求也越来越高,容积式流量计是在众多仪表中发展并应用起步比较早的一种。但由于齿轮啮合时会产生振动以及流体的流动复杂性,使得容积式流量计一般情况下只能适用于液压系统中压力不大的回油侧。可见,液压系统中的动态流量测量是液压测试中的难题,特别是高压侧的动态流量测量。论文在研究传统齿轮流量计的结构基础上,研究设计并加工了新型行星齿轮流量计。介绍分析了该流量计的结构创新点、测试组件结构以及测试原理。计算了流量计的几何排量和流量,利用MATLAB软件对流量计齿轮参数优化设计得到最佳参数,对得到的参数进行强度校核。在workbench中对流量计静态液压力情况进行仿真分析,研究了流量计材料的适用情况并得出尼龙材料替代合金钢材料的可行性。利用AMESim仿真,搭建了伺服阀模拟动态流量信号测试系统,对伺服阀给出特定信号仿真分析。研究了动态液压缸在液压系统中的响应情况以及旁路法测流量时,支油路与动态液压缸的流量信号关系及响应情况。旁路法测流量时,溢流阀是压力控制上的重要元件,所以论文在FLUENT仿真软件中,设计了溢流阀仿真模型,利用GAMBIT对模型划分网格。分析了滑阀式溢流阀和锥芯式溢流阀在旁路法测流量时,相同负载及相同进口速度下,对液压系统动态流量特性的影响情况。最后,提出了一种以动态液压缸的位移信号求出流量信号方法,并加工了伺服阀模拟动态流量信号实验台,介绍了试验台的工作原理、主要元件以及操作流程。在该实验台上进行实验,通过给出不同条件,采集动态液压缸的位移信号,处理信号求出速度信号,研究了液压缸对液压系统动态流量信号的响应情况,与系统的实际信号大致相同。
[Abstract]:With the rapid development of our economy and the increasing demand for the production level of automation industry, the measurement requirements for flow signals are becoming more and more high. The volumetric Flowmeter is one of the early ones developed and applied in many instruments. However, due to the vibration of gear meshing and the complexity of fluid flow, the volumetric Flowmeter can only be applied to the return side of hydraulic system with little pressure. It can be seen that dynamic flow measurement in hydraulic system is a difficult problem in hydraulic testing, especially in high pressure side. On the basis of studying the structure of traditional gear Flowmeter, a new type of planetary gear Flowmeter is designed and manufactured. The structure innovation, test component structure and test principle of the Flowmeter are introduced and analyzed. The geometric displacement and flow rate of the Flowmeter are calculated. The optimum parameters are obtained by using MATLAB software to optimize the parameters of the Flowmeter gear, and the strength of the obtained parameters is checked. The static hydraulic force of Flowmeter is simulated and analyzed in workbench. The application of Flowmeter material is studied and the feasibility of replacing alloy steel material with nylon material is obtained. Using AMESim simulation, a servo valve simulation dynamic flow signal testing system is set up, and the specific signal simulation analysis is given to the servo valve. The response of the dynamic hydraulic cylinder in the hydraulic system and the relationship and response of the flow signal between the supporting oil path and the dynamic hydraulic cylinder when the flow rate is measured by bypass method are studied. The relief valve is an important component in pressure control when measuring the flow rate by bypass method, so the simulation model of relief valve is designed in fluent simulation software, and the model is meshed by gambit. The influence of sliding valve relief valve and cone core relief valve on the dynamic flow characteristics of hydraulic system under the same load and same inlet velocity is analyzed. Finally, a method of calculating the flow signal from the displacement signal of the dynamic hydraulic cylinder is put forward, and the servo valve simulation dynamic flow signal experimental platform is machined. The working principle, main components and operation flow of the test-bed are introduced. On the experimental bench, the displacement signal of the dynamic hydraulic cylinder is collected, the velocity signal is obtained by processing the signal, and the response of the hydraulic cylinder to the dynamic flow signal of the hydraulic system is studied. The signal is roughly the same as the actual signal of the system.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH814.8

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