聂涛,胡桂川,周群,赵杭,李显勇
NIE Tao,HU Guichuan,ZHOU Qun,ZHAO Hang,LI Xianyong

• 1:重庆科技学院机械与动力工程学院

摘要(Abstract)：

为了开展超高压笼套式节流阀的自主研发，解决压降比小(10～15 MPa)、冲蚀破坏严重、寿命短等问题，提出三级套筒小孔阀芯和出口带底座节流小孔的新型流道结构，通过对不同阀芯结构下连续单相流仿真计算，对比分析了不同结构阀芯对节流阀内部湍流流动、压力、速度、质量流量以及最终节流效果的影响。最后，对阀芯小孔位置进行布局和节流阀内部结构进行设计。此研究提高了阀芯使用安全性能和节流效果，多级节流降压值比一级节流大1.85倍左右，为25 MPa左右。为提高节流阀的使用寿命提供了一定程度上的技术支撑。
In order to carry out the independent research and development of ultra-high pressure cage type throttle valve，solve the problems of small pressure drop ratio(10～15 MPa)，serious erosion damage and short life，a three-stage sleeve orifice spool and a new type of flow channel structure with a base orifice at the outlet was proposed.Through the simulation calculation of continuous single-phase flow under different spool structures，the influences of different spool structures on the turbulent flow，pressure，velocity，mass flow and the final throttling effect of the throttle valve were compared and analyzed.Finally，the position of the spool orifice and the internal structure of the throttle valve were designed.This research improves the safety performance and throttling effect of the spool，the step-down value of multi-stage throttling is about 1.85 times larger than that of one-stage throttling，which is about 25 MPa，and provides certain technical support for improving the service life of the throttle valve.

关键词(KeyWords)： 压降比小;冲蚀破坏高;新型流道结构;装配设计
low pressure drop ratio;high erosion damage;new flow channel structure;assembly design

Abstract:

Keywords:

基金项目(Foundation): 重庆市技术创新与应用示范专项产业项目(cstc2018jszx-cyzdX0061);; 重庆科技学院研究生科技创新计划项目(YKJCX1920313)

作者(Author): 聂涛,胡桂川,周群,赵杭,李显勇
NIE Tao,HU Guichuan,ZHOU Qun,ZHAO Hang,LI Xianyong

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