键词 楔式闸阀 平板闸阀 设计计算 摘 要:通过对现行楔式双闸板(弹性)结构电站闸阀存在问题的分析,提出采用平板闸阀结构的改进替代方案,并给出设计计算方法,供广大用户及同行参考 Design and calculation on high-temperature and high-pressure parallel slide gate valve ZHANG Jian-hua XU Xiang-lan WANG Shu-guang ( Abstract: The article introduced the structural defects of existing wedge gate valve, and introduced the improvement program of parallel slide gate valve replace the wedge gate valve. In addition, it also expatiate the calculation methods of main parts. Key words: wedge gate valve parallel slide gate valve design and calculation 一、 序言 现行600MW超临界机组主汽参数已达24.2MPa、温度538/ 这类阀门在火力发电站一般用于主蒸汽截止和隔离、主给水泵隔离、高压加热器隔离、汽轮机疏水系统等关键管线,控制高温高压汽水介质的有效切断或开启,其承压性能、密封性能、动作性能、使用寿命、维修周期等直接影响机组的可靠性、安全性,一旦发生故障,常常造成重大事故,严重威胁机组的安全运行。因为阀门故障的停机事故几乎每家电厂都曾发生。
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