人民黄河2018，Vol.40Issue(3)：132-134,3.DOI:10.3969/j.issn.1000-1379.2018.03.030
万家寨水电站活动导叶立面密封改造
Reform of Hydraulic Turbine Guide Vane Facade Seal at Wanjiazhai Hydropower Station
摘要
Abstract
In high-velocity and hyper-concentrated flow long-term erosion,the guide vane rigid facade seal surfaces of Wanjiazhai hydraulic turbine wore seriously by sand abrasion and cavitations,which caused water leakage increased and the appearance of unit shunt running,so the safety running of units was being seriously affected. The guide vane rigid facade seal surfaces wore seriously after a minor repair cycle when the welding polishing repair treatment was adopted. Therefore, in order to solve the above problems, it was necessary to reform the guide vane facade seal to ensure the safe operation of the turbine units and reach the purpose of energy saving and efficiency increasing. The reason of sealing failure was analyzed, then a viable technology solution was put forward and the steel-plastic composite polyurethane seal plates invented by Yellow River Institute of Hydraulic Research were used firstly for the improvement of No.1 and No.4 units and the technical details and the installation process were controlled precisely and strictly. After two flood seasons running test,the results show that this seal-ing sets improve the sealing performance under the conditions of full closed wicket gate and restrain the abrasion and leakage. This technical transformation is very useful for the sealing failure of wicket gate for Wanjiazhai Hydropower Station and provides a reference of guide vane seal transformation for other hydropower stations.关键词
活动导叶/磨蚀/聚氨酯/密封板/水轮机组/技术改造Key words
guide vane/erosion by sand abrasion and cavitation/polyurethane/seal plate/hydraulic turbine/technical reform分类
建筑与水利引用本文复制引用
李进军,张雷,张腾飞,王伟博,栾少帅,翁陈成..万家寨水电站活动导叶立面密封改造[J].人民黄河,2018,40(3):132-134,3.基金项目
水利部技术示范项目(SF-201604) （SF-201604）
黄河水利科学研究院科研成果推广转化示范项目(HKYTZJJ-2016-01). （HKYTZJJ-2016-01）
