引进中间变量确定汽轮机中间分隔轴封漏汽量的方法研究  

Method of Determining Gland Seal Leakage of Steam Turbine by Introducing Intermediate Variable

作　　者：郭容赫 潘宏刚 GUO Ronghe;PAN Honggang(Northeast Branch of Huadian Electric Power Research Institute Co.Ltd,Shenyang 110180,China;School of Energy and Power Engineering,Shenyang Institute of Engineering,Shenyang 110136,China)

机构地区：[1]华电电力科学研究院有限公司东北分公司,沈阳110180 [2]沈阳工程学院能源与动力学院,沈阳110136

出　　处：《动力工程学报》2024年第5期752-758,共7页Journal of Chinese Society of Power Engineering

摘　　要：针对高、中合缸汽轮机的中间分隔轴封漏汽测量较难的问题,提出一种引进中间变量确定汽轮机中间分隔轴封漏汽量的方法,经理论推导得出计算方法,并通过变工况试验,将中间分隔轴封平衡管漏汽分量作为中间变量,计算出不同工况下的高压中间分隔轴封漏汽总量以及中压中间分隔轴封漏汽分量。以某台亚临界600 MW汽轮机为例,将计算结果与其设计工况进行对比验证。结果表明:该机组中间分隔轴封漏汽量相对误差在1%以内;与变汽温法计算结果相比,中压中间分隔轴封漏汽量相对误差在5%以内。本文方法理论可靠,计算精度高,操作简单,具有可行性。Aiming at the measurement problem of gland seal leakage of high pressure(HP)and intermedia(IP)combined turbine,a method of determining the gland seal leakage by introducing intermediate variable was proposed.And a calculation method was derived through theoretical analysis.The total amount of gland seal leakage of HP and the component of IP side gland seal leakage at different conditions were calculated by taking the leakage of IP balance piping of gland leakage as an intermediate variable.Taking a subcritical 600 MW steam turbine as an example,the calculation results were compared with the design conditions.Results show that the relative error of gland seal leakage is within 1%.Compared with the calculated values by the variable steam temperature method,the relative error of the IP side gland seal leakage is within 5%.Research results prove that the proposed method is reliable in theory and has high accuracy in calculation,also simple in operation and feasibility.

关 键 词：汽轮机 中间分隔轴封 中间变量 漏汽量计算 误差分析 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]