大型立式轴流泵水导机械密封技术改造与运行评价  

Technical Transformation and Operation Evaluation of Hydraulic Mechanical Seal for Large Vertical Axial Flow Pumps

作　　者：颜蔚[1] 滕军[1] 李扬[1] YAN Wei;TENG Jun;LI Yang(Jiangdu Water Management Division of Jiangsu Province,Jiangdu 225200,Jiangsu Province,China)

机构地区：[1]江苏省江都水利工程管理处,江苏扬州225200

出　　处：《中国农村水利水电》2018年第9期96-100,共5页China Rural Water and Hydropower

摘　　要：江都第四抽水站立式全调节轴流泵水导机械密封静环座弹簧座结构经过2次改造,2009年江都四站整体改造后机械密封在使用中存在弹簧松动、锈蚀难以更换等问题,2012年通过在弹簧座轴孔切出一个角,从而增加弹簧座轴孔接触面的方法,解决了弹簧安装检修时难以压入的问题。但是实际使用中出现多组弹簧脱落、锈蚀现象,在将材质更换为不锈钢的基础上经过计算增加弹簧长度,通过运行基本解决了脱落锈蚀等问题。2013年进一步进行改进,将弹簧座由连体式改为哈夫式,实现了检修时无需拆卸动静环系统即可便捷更换弹簧的效果,提高了动静环机械密封的检修效率。经运行检验,此次改造提升了立式全调节轴流泵水导机械密封检修效率和运行安全可靠性,为工程运行提供了保障,具有结构简单、可靠性高和价格便宜的优点。Adjustable axial-flow pump hydraulic mechanical seal static ring seat spring seat structure after 2 vertical transformation of Jiangdu Fourth Pumping Station,Jiangdu Station in 2009 after the overall transformation of the mechanical seal in the use of the existing spring loose,the problem of corrosion is difficult to solve. In 2012 through the spring seat shaft hole cut out of a corner,the contact surface of the shaft hole method expanded. The spring installation is solved and maintenance is difficult. But many groups of off spring,corrosion phenomenon in actual use,will replace the stainless steel materials on the basis of the calculated increase in the length of the spring. By running the basic solution of 2013,shedding corrosion and other problems were further improved.The secondary transformation has improved the efficiency and reliability of the mechanical seal of the water seal of the vertical fully adjustable axial flow pump,and provided a guarantee for the operation of the project,which has the advantages of simple structure,high reliability and low price.

关 键 词：立式轴流泵 机械密封 静环座改造 

分 类 号：TV675[水利工程—水利水电工程] S277.9[农业科学—农业水土工程]