Design, simulation of flow field characteristics and experiment of unidirectional microsphere valve

LU Hongguang; MIAO Xiaodan; LIU Shihai; CHEN He

doi:10.13873/J.1000-9787(2021)12-0026-05

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Design, simulation of flow field characteristics and experiment of unidirectional microsphere valve

更新时间：2025-09-11

- Design, simulation of flow field characteristics and experiment of unidirectional microsphere valve
- Issue 12, Pages: 26-30(2021)
- 作者机构：
  
  上海工程技术大学机械与汽车工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2021)12-0026-05
  CLC： TH134
- Published：2021
- 稿件说明：
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LU Hongguang, MIAO Xiaodan, LIU Shihai, et al. Design, simulation of flow field characteristics and experiment of unidirectional microsphere valve[J]. 2021, (12): 26-30.
DOI：

LU Hongguang, MIAO Xiaodan, LIU Shihai, et al. Design, simulation of flow field characteristics and experiment of unidirectional microsphere valve[J]. 2021, (12): 26-30. DOI： 10.13873/J.1000-9787(2021)12-0026-05.

摘要

设计了一种单向微球阀

微球阀主要由阀体、球体、阀口组成。其中

阀口包括阀入口和设有中心孔和边缘扇状的类轮辐阀出口

阀入口、类轮辐阀出口和球体三者相互配合可以控制液体单向流动。通过FLUENT软件对不同直径大小球体及其在不同开启高度下的微球阀进行流场仿真分析。仿真结果表明:微球阀的球体越小

开启高度越高

微球阀内部压力越小

同时

内部速度越小

流通性能越好。通过实验

研究微球阀正向导流和反向截流流量特性。实验结果表明:微球阀的球体越小

其正向导流流量特性越好

但反向截流流量特性相对较差。结合工作环境

最终选用Φ2.5 mm氮化硅陶瓷球体的微球阀。本研究为单向微球阀的集成化应用和微型化优化提供了理论依据。

Abstract

An unidirectional microsphere valve is designed.The microsphere valve is mainly composed of valve body

sphere and valve port.The valve port includes a valve inlet and a spoke-like valve outlet with a central hole and a fan-shaped edge.The valve inlet

spoke-like valve outlet and the sphere cooperate with each other to control the one-way flow of liquid.The flow field simulation analysis of microsphere valves with different diameters and different opening heights is carried out by FLUENT software.The simulation results show that the smaller the sphere and the higher the opening height are

the smaller the internal pressure of the ball valve is

at the same time

the smaller the internal speed and the better the flow performance are.The flow characteristics of forward diversion and reverse closure of microsphere valve are studied by experiments.The experimental results show that the smaller the sphere is

the better the forward diversion flow characteristics are

but the reverse closure flow characteristics are relatively poor.Combined with the working environment

it is finally adopted the microsphere valve of Φ2.5 mm silicon nitride ceramic sphere.This study provides a theoretical basis for the integrated application and miniaturization optimization of unidirectional microsphere valve.

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