【作者】 陈俊强；

【导师】 王存堂；

【作者基本信息】 江苏大学 ， 机械电子工程， 2009， 硕士

【摘要】 JBP系列径向柱塞泵是我国自主开发的具有高压力,大流量、高效率的容积式液压泵,在农业机械、工程机械、矿山机械、船舶制造等行业领域已经得到广泛应用,其性能将直接影响着液压系统的性能及运行情况。滑靴副作为该系列径向柱塞泵中的关键摩擦副之一,其性能对泵可靠性优劣起着至关重要的作用。因此,对其内部流场进行深入研究,较详细和较准确地掌握滑靴内部流体的流场和温度场分布,不仅具有理论意义,更具有很大的工程实用价值。1、本文将JBP32H径向柱塞泵滑靴-定子摩擦副作为研究对象,对其工作原理及结构进行分析研究,利用三维软件PRO/E建立了滑靴副流道的物理模型,利用GAMBIT建立了网格模型。2、根据计算流体力学的基本理论,建立描述滑靴副流道流动的数学模型,建立求解流场和温度场的控制方程和求解方程的基本假设和计算条件。并根据滑靴内液压油流动的实际流动情况,给出符合实际的初始以及边界条件。3、选用合适的仿真模型和设定相应的迭代初始参数,利用计算流体力学中有限体积法,选用laminar模型,选取FLUENT中的分离式求解器进行数值计算,得出不同工作条件下压力分布、速度分布以及温度场分布等相关数值模拟曲线。4、针对现有模型的不足,提出了一种改进的滑靴结构,并对改进后的滑靴副流道模型进行分析,数值计算结果表明改进方案可行。本文成功地将计算流体力学中的FLUENT软件引入到径向柱塞泵滑靴副研究领域,研究结果可以为以后JBP系列径向柱塞泵滑靴副进一步研究提供依据,对径向柱塞泵滑靴副结构设计和性能优化具有指导意义。更多还原

【Abstract】 JBP radial piston pump is an independent development volume type hydraulic pump of our country,which has high pressure,large flow,high efficiency.It was widely used in the agricultural machinery,construction machinery,mining machinery,ship construction and so on.Its performance directly influences hydraulic system’s performance and operational conditon.Slipper pair is one of the key friction pairs of this series pump,of which performance is playing the very important role to the pump’s reliability.Therefore,conducting the further research to its ternal flow field and grasping the slipper pair internal fluid flow field and the temperature field distribution detailedly and accurately,not only has the theoretical signiflcances,but also has very practical values.Firstly,this paper analyzed the working principles and structure of the slipperstator friction pair of JBP32H radial piston pump,used three dimensional software PRO/E to establish the slipper pair’s physical model,established the grid model by GAMBIT.Secondly,according to computational fluid dynamics’ elementary theory,the paper established mathematical model of the slipper pair field’s fluid flow,proposed the governing equations to solving flow field and the temperature fields,as well as the basic assumptions and calculation conditions of solving equation.And in term of the hydraulic oil’s actual flow situation in the slipper,the initial conditions and boundary conditions that meet the actual conditions were given out.Thirdly,by selecting the appropriate simulation model and setting the corresponding iteration initial parameters,the model equations are solved by the Finite Volume Method and the segregated solver of FLUENT based on CFD principle and laminar flow model.The numerical simulation curves of the pressure distribution,the velocity distribution as well as the temperature field distribution under the different working conditions were obtained. At last,in view of the existing model’s deficiency,this paper proposed an improved slipper structure and the improved model of slipper pair flow field was analyzed.The numerical calculation results indicated that the improved scheme was feasible.This paper applied iterative computation by using FLUENT software of CFD in the research of radial piston pump slipper pair successfully for the first time.The research results could provide evidences for the further researches on the slipper pair and have guiding significances for the radial piston pump slipper pair structure design and the performance optimization.更多还原