尾气回收式烟雾机雾化影响因素及能量回收试验  

Factors Affecting Atomization of Exhaust Gas Recovery Type Smoke Machine and Energy Recovery Test

作　　者：何龙 佟灵茹 潘江如 谷峥 HE Long;TONG Lingru;PAN Jiangru;GU Zheng(College of Mechanical and Electrical Engineering,Xinjiang Institute of Engineering,Urumqi Xinjiang 830027,China)

机构地区：[1]新疆工程学院机电工程学院,新疆乌鲁木齐830027

出　　处：《农业工程》2023年第3期14-19,共6页AGRICULTURAL ENGINEERING

基　　金：新疆维吾尔自治区自然科学基金项目(2020D01B20)。

摘　　要：基于YN系列38CRD2型柴油发动机,在排气管加装尾气回收式烟雾机进行负荷特性试验,研究发动机转速、喷头流量和烟雾剂浓度变化对烟雾机雾化效果的影响,通过排气管前后端温度变化及加装烟雾机前后油耗变化得到尾气能量回收效率。试验结果表明,发动机转速在2400r/min时,雾滴颗粒粒径最佳;在定发动机转速工况下,烟雾剂浓度为30%时,雾滴颗粒粒径最佳;喷头流量为7.5L/min时喷头雾化较优。安装烟雾机后,发动机转速在2200~2400r/min时,发动机工作稳定且烟雾机雾滴颗粒粒径均匀;通过采集发动机排气管前后端温度数据计算出尾气回收再利用率为11%,即多利用88g柴油,提高了燃油利用效率,实现节能减排。该研究为农业机械的多功能开发提供了新的方向。Load characteristic tests were conducted by installing an exhaust gas recovery smoke engine in exhaust pipe based on a YN series 38CRD2 diesel engine.Influence of engine speed,nozzle flow rate and aerosol concentration changes on atomization effect of smoke machine were studied.Exhaust energy recovery efficiency was obtained by changing temperature at the front and rear ends of exhaust pipe and fuel consumption before and after installing smoke machine.Test results indicated that when engine speed was 2400 r/min,droplet size was the best.Under constant engine speed conditions,when concentration of smoke agent was 30%,droplet size was the best.When nozzle flow rate was 7.5 L/min,nozzle atomization was better.After installing smoke machine,when engine speed was between 2200 to 2400 r/min,engine operated stably and droplet size of smoke machine was uniform.By collecting temperature data from front and rear ends of engine exhaust pipes,it was calculated that exhaust gas recovery and reuse rate was 11%,which meaned that 88 g diesel fuel was used more frequently.Fuel utilization efficiency was improved and energy saving and emission reduction was achieved.It provided a new direction for multifunctional development of agricultural machinery.

关 键 词：尾气回收 烟雾机 能量回收效率 雾滴颗粒粒径 发动机 负荷特性 燃油经济性 

分 类 号：S220[农业科学—农业机械化工程]