摘要
本文以高速无油离心空压机为对象,设计了一款高速离心压气机叶轮。通过Concepts NREC中的Compal模块,对压气机进行一维循环设计,同时利用AxCent模块进行离心压气机叶轮叶片几何设计。在通过商用软件ANSYS-CFX对压缩机离心叶轮、无叶扩压器及蜗壳内部流动通道进行全流道三维仿真计算,将得到的结果与一维计算结果进行对比优化。通过实验样机进行测试,结果表明,该离心压气机在设计转速下叶轮理论效率可达0.89,整机气动等熵效率可达到0.8以上,流量工作范围为0.025~0.13 kg/s。该压缩机具有较宽的工作范围,能够在低流量下稳定运行不发生喘振,压缩机具有高能效的要求。该研究成果可为高性能离心空压机的设计提供理论依据。
This article focuses on a high-speed oil-free centrifugal air compressor and designs a high-speed centrifugal compressor impeller.Using the Compal module in Concepts NREC,the compressor is designed for one-dimensional circulation,while the AxCent module is used for geometric design of centrifugal compressor impeller blades.By using the commercial software ANSYS CFX,a full channel 3D simulation calculation was conducted on the centrifugal impeller,bladeless diffuser,and internal flow channel of the volute of the compressor.The obtained results were compared and optimized with the one-dimensional calculation results.Through experimental prototype testing,the results show that the theoretical efficiency of the impeller of the centrifugal compressor can reach 0.89 at the design speed,the aerodynamic isentropic efficiency of the whole machine can reach above O.8,and the flow rate working range is 0.025-0.13 kg/s.This compressor has a wide working range and can operate stably at low flow rates without surging,at the same time,it also meets the requirement of high energy efficiency of compressors in the design conditions of automobiles.This research result can provide theoretical basis for the design of high-performance centrifugal air compressors.
作者
张现红
叶文腾
ZHANG Xianhong;YE Wenteng(Gree Electric Appliances,Inc.of Zhu Hai,Zhu Hai,519070)
出处
《制冷》
2025年第1期54-60,共7页
Refrigeration
关键词
离心压气机
CFX
流体仿真
喘振
Centrifugal Compressor
Cfx
Fluid Simulation
Surge
