作者：范伟军1, 张天琦1, 汶攀杰2, 郭斌2
作者单位：1. 中国计量大学计量测试工程学院, 浙江 杭州 310018;
2. 杭州沃镭智能科技股份有限公司, 浙江 杭州 310018
关键词：空气干燥器;自动化检测;高温高湿高压;干燥效能
摘要：
依据国家汽车制动系统行业相关标准研制汽车空气干燥器干燥效能自动化试验系统。设计加热装置、饱和装置、汽水分离装置、混合装置，实现温度、湿度、压力自动可调的高温高湿高压模拟气源，采用PID控制反馈加热器、电动调节阀、电气比例阀实现对气源温度（室温~80 ℃）、相对湿度0~100%、压力0~1.6 MPa的精准控制，满足干燥效能测试所需的气源条件；基于比例流量阀设计自动可调节负载气容45.7 ~2 156.14 L，实现对露点降、干燥器负载率的控制，满足干燥器干燥效能测试要求，计算机实时控制，测量压力、流量、温湿度等参数值，自动分析处理测试数据，实现全过程自动化。试验表明，该系统能够准确地检测空气干燥器的干燥效能，不确定度小于0.05，满足工业现场的要求。
Design of drying performance test system for automobile air dryers
FAN Weijun1, ZHANG Tianqi1, WEN Panjie2, GUO Bin2
1. College of Metrology Technology and Engineering, China Jiliang University, Hangzhou 310018, China;
2. Hangzhou Wolei Intelligent Technology Co., Ltd., Hangzhou 310018, China
Abstract: Based on the relevant standards of the national automotive brake system industry, the first domestic automotive air dryer drying efficiency automatic test system was developed. The heating device, saturation device, steam-water separation and mixing device were designed to realize high-temperature, high-humidity, high-pressure simulated air source with automatic adjustment of temperature, humidity and pressure. Heater controlled feedback by PID, electric control valve and electric proportional valve were used to achieve the precise control of air temperature (room temperature to 80℃), humidity 0-100% and pressure 0-1.6 MPa, to meet the air source conditions required for drying performance test; based on the proportional flow valve, an automatically adjustable gas tank with load capacity 45.7-2 156.14 L was designed to achieve the control of the dew point drop and dryer load rate, to meet the dryness test requirements of the dryer. Real-time, and dynamic displayed the parameter values of pressure, flow, temperature, humidity and the like have been controlled and measured on the computer, and automatically analyzing of test data, which achieved full process automation. The test shows that the system can accurately detect the drying capacity and drying efficiency of the air dryer. The uncertainty is less than 0.05, which meets the requirements of the industrial site.
Keywords: air dryer;automatic detection;high temperature and humidity and pressure;drying performance
2019, 45(6):88-95 收稿日期: 2018-09-16;收到修改稿日期: 2018-10-25
基金项目: 国家自然科学基金资助项目（51405463）；浙江省基础公益研究计划项目（LGG18E050009）
作者简介: 范伟军(1973-),男,湖南邵阳市人,副教授,博士,主要从事汽车零部件检测及仿真研究
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