600MW汽轮机旁路系统泄漏热经济性分析.doc

PAGE 分类号　　　　 毕 业 设 计（论 文）  题 目：600MW汽轮机旁路系统泄漏的热经济性分析 Title：Thermal economic analysis of 600 MW steam turbine bypass leakage  摘要：旁路系统泄漏的安全性与经济性不容忽视，通过对600MW汽轮机热力系统高低压旁路泄漏的相关研究，从而定量分析对汽轮机组经济性影响的大小，指导现场机组的节能改造。正确认识旁路泄漏因素对机组热经济性影响的规律和热力学实质，指导机组热力系统正确运行和检修，提高电厂的运行水平。采用等效热降的方法定量分析热力系统能损的变化，以采取有效措施防止安全隐患的发生和热经济性的下降，使汽轮发电机组达到高效经济运行的目的。并提出一些应当引起电厂重视解决的问题，对如何提高电厂运行经济性给出了一些建议。 关键词：旁路泄漏，等效热降，热经济性 Abstract: leak bypass system security and economy can not be ignored, 600MW steam turbine thermal system high and low pressure bypass leakage study, and thus quantitative analysis of the size of the economic impact of the steam turbine unit to guide the scene unit for energy saving. Correct understanding of the bypass leakage on Thermal Economy of Unit rules and thermodynamics in real terms, the guidance of the correct operation and maintenance of the unit thermal system, improve the level of power plant operation. Equivalent enthalpy drop method for quantitative analysis of the thermal energy loss changes, to take effective measures to prevent the occurrence and the decline of the hot economy of the security risks, so that the turbine generator to achieve the purpose of efficient and economic operation. And should cause power plants pay attention to solving problems, and gives some suggestions on how to improve the plant operation economy.Keywords: bypass leakage, equivalent enthalpy drop, heat economy 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc326580510 1 前 言 PAGEREF _Toc326580510 \h 1 HYPERLINK \l _Toc326580511 2 高压旁路与低压旁路热力系统概述 PAGEREF _Toc326580511 \h 3 HYPERLINK \l _Toc326580512 2.1 旁路系统的作用及类型 PAGEREF _Toc326580512 \h 3 HYPERLINK \l _Toc326580513 2.2 旁路泄漏对汽轮机安全性和经济性的影响 PAGEREF _Toc326580513 \h 4 HYPERLINK \l _Toc326580514 3 热力系统计算方法 PAGEREF _Toc326580514 \h 6 HYPERLINK \l _Toc326580515 3.1 简捷计算 PAGEREF _Toc326580515 \h 6 HYPERLINK \l _Toc326580517 3.2 等效热降 PAGEREF _Toc326580517 \h 9 HYPERLINK \l _Toc326580522 4 汽轮机发电机组热力系统计算 PAGEREF _Toc326580