高参数汽轮机高调门内流动失稳故障的一种经济性解决方法  

An Economic Solution of Flow Instability Fault in High-parameter Turbine's HP-valve

作　　者：万杰[1] 唐海峰[2] 邢阁玉 王勇[2] 刘金福[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001 [2]神华河北国华沧东发电有限责任公司,河北沧州061113

出　　处：《节能技术》2015年第2期159-164,共6页Energy Conservation Technology

基　　金：国家重点基础研究发展计划资助项目(2012CB215201);哈尔滨市应用技术研究与开发攻关项目(2012DB2CP022)

摘　　要：目前,规模化随机波动不确定性新能源电源的并网进一步增大了电网的峰谷差,使得越来越多的高参数大功率火电机组不得不参与调峰。然而,部分负荷进汽方式极大影响着调峰机组的安全高效运行。本文针对高参数汽轮机高调门局部进汽时由于设计缺陷引发汽流流动失稳故障,基于理论分析和试验测试提出了一种基于高调门局部进汽策略设计的经济性解决方法,避免了直接停机更换高调门阀体部件或者直接切换至全周进汽方式运行等现场常用的根本性解决措施所带来的各种损失。最后,通过对几台机组进行实际改造的效果验证了该方法的有效性和实用性。这对提高大功率火电机组深度变负荷运行时的安全高效性具有极大的工程实践价值。Currently,the new energy with random fluctuations uncertainty has a larger scale grid connection,which further increases the difference between power grid ’s peak and valley,making more and more thermal power units with advanced parameter and large capacity participating peak shaving. However,part-load admission way affects the safety and efficient operation of peaking units greatly. In this paper,specific to a high parameters turbine’s high-pressure control valve stream flow instability during part inlet due to design flaws,an economic solution is proposed based on theoretical analysis and experimental testing of a high-pressure control valve locally inlet strategy. This method avoids various losses of other commonly carried fundamental field solutions,like directly shutdown and replace valve body parts or switch to full admission. Finally,the effect of several units with actual transformation verified the validity and usefulness of the method. This method will improve high-power thermal power plants’ safety and efficiency during depth variable load,which has great practical value.

关 键 词：汽轮机 高调门 局部进汽 流动失稳 综合优化 安全高效 

分 类 号：TK263.4[动力工程及工程热物理—动力机械及工程]