摘要
为研究静电喷雾系统（ESS）温室喷雾器的喷雾特性、荷电喷雾场的空间形态及雾滴的尺寸分布，并为具体的喷雾施药场合选择最佳的雾滴大小，运用Oxford激光粒子图像分析测试系统（PDIA）对气流中群体荷电雾滴流场进行实验研究。选取荷电喷雾场中的不同位置，通过对雾滴的粒谱范围、尺寸分布及发散度的测试与分析，为ESS静电喷雾器在温室内的喷施与操作提供实验依据。研究表明：沿轴向距离喷嘴越远，喷雾发展越充分，荷电雾滴粒径越小、分布越均匀；沿横向雾滴粒径呈中间小两边大的分布状况；雾滴粒径谱范围集中在4．4～31．2μm之间；相对尺寸范围和发散边界随着喷雾场轴向距离的增大而增大、扩散比基本不随距离变化且保持相对稳定。实验结果表明ESS喷雾器的雾化质量很高，具有优良的综合技术性能。
In order to study the spray characteristics of ESS greenhouse electrostatic sprayer and the spatial structure and distribution of droplet diameter, the agricultural electrostatic spray field was tested and analyzed in greenhouse using PDIA measurement system. The range of spray particle size, distribution of droplet diameter and divergence angle are obtained in different spray distance. It provides a basis gist for ESS electrostatic sprayer. The experimental results indicate that, along the nozzle axis, the farther the distance form the nozzle is, the smaller the electrostatic droplet diameter is, And its distributions are more symmetrical. The droplet size is smaller in the middle and bigger on both sides along with the transverse axis; The spray particle size ranges from 4.4μm to 31.2μm; The range of relative size and divergent border increase along with the increase of spray distance in nozzle axis, but particle diffu- sivity would not change with the spray distance. The results show that the ESS electrostatic sprayer is a spraying machine with high quality of atomization and excellent comprehensiveness technology performance.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2009年第7期1661-1666,共6页
High Voltage Engineering
基金
基金资助项目：国家高技术研究发展计划（863计划）（2008AA100904）
国家自然科学基金（30571240）
江苏省自然科学基金（BK2008229）
现代农业装备与技术省部共建教育部重点实验室/江苏省重点实验室开放基金（NZ200701）
镇江市农业科技计划（NY2008050）.
