塔式光热电站定日镜清洗技术研究

Research on heliostat-washing technology in solar thermal power tower plant

根据塔式光热电站定日镜镜面清洗的需要,分析了定日镜主要的脏污成因和灰尘的形态及其对电站运行的影响,参考国外同类光热电站已有的设计和运维经验,对比片上机器人等清洗技术,设计一种移动式定日镜清洗车。考虑定日镜清洗的工作环境,清洗车以高离去角的车身行走系统为基础,采用喷淋清洗和扫盘刷扫负压吸尘两种清洗方法,设计镜场控制系统和清洗车操作控制装置,并根据不同的清洗工况设计了三种清洗作业模式,然后完成反射率测试,为定日镜的正常运行维护和光热电站的高效率运行提供了重要保障。

According to the needs of heliostats cleaning in the solar tower thermal power tower plant,the factors of the main soiling,the dust form and influence on the operation of solar plant is analyzed.Referring to the existing design and operation experience of similar thermal plant abroad and comparing the cleaning technology of the on-mirror robot,the mobile heliostat cleaning device is designed.Considering the operating environment of heliostats’cleaning,the cleaning device based on the vehicle walking system with high departure angle,equips spray cleaning and brush scrubbing with negative-pressure dust collection,designs field control system and the single device control equipment,and designs three kinds of cleaning mode according to different cleaning conditions,then completes the cleanliness test,which provides important guarantee for the normal operation and maintenance of the heliostats and high efficiency running of the solar power plant.