文档介绍：
蒸汽管网水力热力耦合计算方法
高鲁锋,郑海村,朱启振,孙德锋
(山东电力工程咨询院有限公司,济南 250013)
摘要:针对目前蒸汽管网水力计算中忽略水力、热力工况相互影响导致计算结果误差偏大及
计算方法适用范围小等问题,基于蒸汽输送过程中流动和传热特性,综合考虑蒸汽的可压缩
性、状态变化、摩擦和传热等多种因素的作用,建立适用性广的水力热力耦合计算模型。采
用标准四阶 Runge-Kutta 公式对数学模型进行求解。通过实例管网对其验证表明,耦合计算
结果能够准确描述管网运行中蒸汽压力和温度的变化关系,各管段计算结果与实际运行数据
的最大误差小于 5%,耦合计算结果与运行数据吻合较好,精度高,可应用于实际蒸汽管网
的设计计算和分析。
关键词:蒸汽管线;耦合;数学模型;可压缩性;黏性
中图分类号:TK212
文献标志码:A
Hydraulic and thermal coupling calculation for steam
heating work
Gao Lufeng, Zheng Haicun, Zhu Qizhen, Sun Defeng
(Shandong Electric Power Engineering Consulting Institute CORR, LTD, JiNan 250013)
Abstract: Currently, the hydraulic calculation for heating works ignores the interaction
between thermodynamic loss and power loss, which often results in big errors and a limited range of
application. We develop a hydraulic-thermal coupling calculation model, taking into account the steam
flow and heat-transfer characteristics and fully considering the actions of multiform factors, such as
coercibility, change of state, and friction. The model is suitable for high- and low-pressure steam pipe
networks. The differential equation of the model is solved using the Runge-Kutta formula. Finally,
taking a real steam work as a case, the coupling calculation is verified to be able to accurately
describe the relation between steam pressure and temperature in the operation period, and the
maximum error bet