汽轮机轴封加热器换热性能计算  

Calculation of Heat Transfer Performance of Steam Turbine Shaft Sealing Heater

作　　者：梁岩芳 彭姝璇 崔永军 罗建超 何垚年 白林超 付经伦 LIANG Yanfang;PENG Shuxuan;CUI Yongjun;LUO Jianchao;HE Yaonian;BAI Linchao;FU Jinglun(Nanjing Institute of Future Energy System,Nanjing 210000,Jiangsu Province,China;School of Energy and MechanicalEngineering,Nanjing Normal University,Nanjing 210023,Jiangsu Province,China;Huaneng Beijing Thermal Power Co.,Ltd.,Chaoyang District,Beijing 100023,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,HaidianDistrict,Beijing 100190,China;University of Chinese Academy of Sciences,Haidian District,Beijing 100000,China)

机构地区：[1]中科南京未来能源系统研究院,江苏省南京市210000 [2]南京师范大学能源与机械工程学院,江苏省南京市210023 [3]华能北京热电有限责任公司,北京市朝阳区100023 [4]中国科学院工程热物理研究所,北京市海淀区100190 [5]中国科学院大学,北京市海淀区100000

出　　处：《发电技术》2023年第6期817-823,共7页Power Generation Technology

基　　金：国家自然科学基金项目(51776201);江苏省碳达峰碳中和科技创新专项资金(重大科技示范)(BE2022614)。

摘　　要：轴封加热器是汽轮机机组中的换热装置,对轴封系统的工作性能有重要的影响。提出一种在已知参数较少的情况下,通过迭代计算得出轴封加热器相关参数的计算方法,并与Aspen Plus软件计算得到的轴封加热器基本换热参数进行对比验证,误差在0.4%以内,表明所提出的计算方法可靠性较高。以华能北京热电有限责任公司联合循环汽轮机组实际应用为例,使用该计算方法计算进口参数改变时的壳程出口液相、气相流量并建立进口参数波动与加热器换热参数间的关联模型,验证了该方法的有效性。The shaft seal heater is a heat exchange device in a steam turbine,which plays an important role to the performance of the shaft seal system.Based on limited data,a method for calculating the relevant parameters of the shaft seal heater was proposed by using an iterative algorithm.The algorithm was validated by comparing the calculated basic heat transfer parameters of the shaft seal heater with the results from Aspen Plus software.The discrepancy is within 0.4%,which validates the iterative algorithm presented in this paper.Taking the practical application of the combined cycle steam turbine unit of Huaneng Beijing Thermal Power Co.,Ltd.as an example,the liquid phase and gas phase flow at the outlet of the shell side,under the condtion of inlet parameter change,were calculated by using this method.Moreover,the correlation model between the fluctuation of import parameters and the heat transfer parameters of the heater was established to verify the effectiveness of the method.

关 键 词：汽轮机 轴封加热器 进口参数 迭代计算 关联模型 

分 类 号：TK26[动力工程及工程热物理—动力机械及工程]