摘要
介绍了汽轮机复合阀、顺序阀配汽的控制原理。针对汽轮机复合阀控制节流损失大的问题,进行了复合阀方式下的阀门流量特性试验;通过试验,优化了配汽方式;提出了合理的顺序阀开阀顺序,给出了顺序阀流量特性曲线;阐述了顺序阀切换过程,实现了复合阀、顺序阀的无扰切换。顺序阀控制投运后,机组运行安全平稳,降低了节流损失,提高了机组的经济性。
An introduction was proposed to the control principles for steam distribution in mixing valve and sequence valve control mode of steam turbines. To solve the problem of large throttling loss under mixing valve control mode, flow characteristic tests were performed, based on which the steam distribution control mode was optimized. Meanwhile, reasonable operation order was proposed for the sequence valve control, with corresponding flow characteristic curves presented simultaneously. In addition, the process of valve switching was described to achieve undisturbed switching between mixing valve and sequence valve control. After application of the sequence valve control mode, the unit now runs safely and stably, resulting in reduced throttling loss and improved unit economy.
出处
《发电设备》
2016年第4期282-284,共3页
Power Equipment
关键词
汽轮机
复合阀
顺序阀
阀序切换
配汽优化
steam turbine
mixing valve
sequence valve
valve switching
steam distribution optimization
