阀芯

阀芯位移测试系统控制器程序设计，实现了测试模式选择、数据帧接收、PWM信号发送以及结果显示等功能。

MCU of spool displacement testing system receive date , output signal and show the result .

2D数字伺服阀为利用阀芯的双运动自由度原理设计而成导控型阀。

2D digital servo valve is developed by utilizing both rotary and linear motions of a spool .

Al2O3陶瓷阀芯耐磨性的研究

Practical Application Wear-resisting Property of Al_2O_3 Ceramics

液压滑阀阀芯旋转现象的CFD解析

CFD Simulation of the Rotating Phenomenon of Hydraulic Slide Valve

ANSYS软件在调节阀阀芯型线设计中的应用

Application of ANSYS in the Design of the Molded Lines of the Value Core of an Adjustable Valve

基于CFD的液压锥阀阀芯启闭过程的液动力分析

Analysis on Flow Force of the Hydraulic Poppet Valve with the Moving Cone Based on CFD

应用CFD方法对阀芯运动状态下流体在锥阀内的流动状态进行了可视化计算和分析研究。

The flow field in a moving cartridge poppet valve is simulated and analysed with CFD technique .

在此基础上提出了以超磁致伸缩材料为阀芯，以DSP为控制器，带有总线型接口的高速开关阀的研究课题。

And then it puts forward study on the high speed switch valve , using GMM as valve 's core , adopting DSP as controller and designing bus communication interface .

对该阀作了建模和理论分析，并对以PWM信号输入，阀芯的运动作了数字仿真，结果与实验一致。

Thrugh model establishment and theoretical analysis of the valve , and numerical simulation for PWM signal input and valve spool movement , results agree with the experiment .

本课题主要的研究内容有：1.根据挤压油膜液压阻尼理论建立了阻尼阀流量平衡方程与力学平衡方程，并通过MATLAB软件确定了各阻尼阀工作状态下的活塞振动速度及阀芯的开启高度。

According to damping theory of squeezing film , establish flow balance equation and mechanical equilibrium equation and figure out the piston velocity and the damping valve height by MATLAB software . 2 .

2D气动数字伺服阀由阀芯双自由度设计的两级气动伺服阀和连续跟踪控制的步进电动机作为电&机械的接口两部分构成。

The digital servo valve is composed of 2 - stage pneumatic servo valve developed with rotary and linear motions of a single spool , and stepper motor under continual control .

所以本文最后建立了动态模型，给定阀芯移动速度，利用Fluent中滑动网格模型进行了动态仿真。

Therefore , this thesis finally established a dynamic model , and take dynamic simulation by the method of sliding mesh in Fluent when the velocity was given .

通过改变阀芯和阀套的轴向相对位置，即可调节开关阀的PWM占空比，并PWM占空比从0到100%连续可调。

By changing the relative axial position of the valve core and the valve sleeve , can adjust PWM duty ratio of the on-off valve . PWM duty ratio adjustment range is0to100 % .

在小dx区域，流量对阀芯关闭时间的影响主要取决于阀的静态压差&阀芯位移特性，在这些方面试验结果和作者的理论分析是完全一致的。

The effect of flowrate arises mainly from valves ' pressure drop ~ spool displacement static characteristic in the case of small d_x . The result of experiments for the effect analysis agrees with the authors ' values .

阀芯位移测试系统主要实现了不同占空比信号下OCV阀芯位移特性监测。

Displacement test system is mainly to monitor OCV spool displacement in different duty cycles .

详细讨论了采用低振动阀芯设计抗汽蚀和选用适当的XFZ降低汽蚀产生的噪声的方法，并结合抛物线阀芯和V型阀芯等具体类型讨论了这种方法的应用效果。

The measures adopting lower vibration plug design against cavitation erosion and selecting proper X Fz to reduce noise caused by cavitation are discussed in detail together with the application effects of parabola plug and V type plug .

使用有限元软件Fluent建立了阀的两相流模型，分析两相流质量流量、压力和阀芯位移之间的关系，修正阀口流量系数。

A two phase flow model is built using finite element software-Fluent . The relationship of two phase flow rate , pressure and spool displacement is analyzed , and flow coefficient of valve port is modified .

系统地研究了阀芯位移的静特性，对影响静特性从而影响整个系统性能的脉宽调制频率fc，阀结构特性参数t1，t2，t3，t4等进行了讨论；

The static , characteristics of spool traverse are completely and systematically studies , and the factors fc , t1 , t2 , t3 , t4 , that affect the static characteristics and thereby the performance of the whole on-off valve control system are discussed in detail .

结合生产流程与制造工艺，在OCV装配过程中对阀芯位移量进行测试，降低了次品率，控制了生产成本。

Due to production processes , the spool displacement of OCV can reduce the defect rate and control the cost of production .

根据生产工艺和流程的需要，本系统被划分为OCV相位控制测试系统及OCV阀芯位移测试系统。

According to practical needs , the whole system is divided into actuator phase testing system and the OCV spool displacement measurement system .

通过单片机C8051F320输出PWM（Pulsewidthmodulation）信号，经过三极管进行功率放大，驱动比例电磁铁，改变阀芯位移，从而改变阀的开口度，得到了所需的流量。

The single chip produces PWM ( Pulse Width Modulation ) signal which is amplified by crystal triode , drives proportional solenoid , changes the position of the cone and the opening size , therefore this valve meets the flow demand .

其中阀芯的设计选型与确定过程中，利用了fluent流场专用仿真工具，对几种不同限速切断阀的阀芯内部流场情况进行了分析，指导了设计过程，最后设计出了比较合理的阀芯结构。

Especially in the design and the selection of the valve , using the simulation software-fluent , the internal flow field of some kinds of different pipe rupture valve are analyzed . And a reasonable structure of valve is worked out .

研制了一种新结构的G型π桥溢流阀，该阀的先导阀部分由锥阀芯、控制活塞、液阻R1、R2、先导阀体和先导阀弹簧等构成。

A new type of G - p bridge pilot relief valve was developed . It 's pilot valve is consist of poppet , control piston , orifice R1 , orifice R2 , pilot valve body and pilot spring .

这为滑阀液动力的研究打下了基础。其次，结合三维CAD软件和Fluent前置处理软件Gambit建立了不同阀芯开度的仿真模型，并对模型进行了非结构化网格的划分。

This is a basic for the research of flow force . Second , simulation models for different coefficient opening was established by the 3D CAD software and Gambit which is pre-processing software of Fluent , and the model was division with the unstructured grid .

通过静态仿真、DSH动态仿真等手段，以实用性能价格比为基点，进行研究，从而确定经济可行的阀芯设计方案，并对近年来引起人们兴趣的控制曲线双增益问题进行了探讨。

By means of static simulation and DSH dynamic simulation , practic perfor-mance-price ratio as key point is investigated , thereby an economically practical design scheme of valve core is developed and double gain of control curve is also discussed , which recently becomes attractive subject .

灰铸铁阀芯的熔模精密铸造

Casting Gray Iron Plug by Fusible Pattern Moulding GREY QUADRATIC FORM

换阀芯平衡阀的流量特性实验研究

The experiment study of flow property on the core-exchange balance valve

液压换向阀阀芯卡紧的分析研究

Research and Analysis on Valve Element Clutch of Hydraulic Diverter Valve

超声/机械复合研磨球阀阀芯机构设计研究

Research of ultrasonic and mechanical milling technology used in spool structure

调节阀的阀杆与阀芯联接方法的改进

Measures for improving connection between stem and wick of pilot valve