液氦温区微小流量调节阀设计与性能分析  

Design and performance analysis of micro - flow control valve in LHe temperature

作　　者：谯厚峰 李俊杰[2] Qiao Houfeng;Li Junjie(Institutions of Physical Science and Information Technology,Anhui University,Hefei 230601,China;High Magnetic Field Laboratory,Hefei Institutes of Physical Science,CAS,Hefei 230031,China)

机构地区：[1]安徽大学物质科学与信息技术研究院,合肥230601 [2]中国科学院合肥物质科学研究院强磁场科学中心,合肥230031

出　　处：《低温与超导》2023年第7期24-30,共7页Cryogenics and Superconductivity

基　　金：中国科学院合肥研究院院长基金(YZJJ2021QN29)资助。

摘　　要：本文针对高压差比、超低温、微小流量、两相流等工况,采用包络线法设计的阀芯型面,根据低温绝热和机械性能要求设计了阀门的整体结构,并通过数值方法对不同开度下的内部流动特性进行了仿真分析。结果表明,该调节阀可实现20:1等比例调节(最大Kv值0.05),工作状态下漏热量不超过0.12 W,满足低温变温系统的需求。Based on the working conditions of high differential pressure ratio,ultra-low temperature,micro-flow and two-phase flow,molded lines of the value core were firstly designed using the envelope method.Then,the whole structure of the valve was designed with considering the requirements of thermal insulation and mechanical behaviors.Further,the heat loads and flow characteristics at different open degree were numerically simulated.The results show that the valve has an equal percentage flow characteristic and adjustable up to 20:1 ratio,which meet the design requirements.

关 键 词：低温调节阀 微小流量 液氦温区 性能分析 

分 类 号：TB661[一般工业技术—制冷工程]