600MW超临界空冷机组双背压低真空供热改造  

Retrofitting for Low-Vacuum Heat Supply with Dual Back-Pressure in a 600MW Supercritical Air-Cooling Unit

作　　者：包伟伟[1] 孙桂军 李贺莱 刘鑫[1] 叶东平[1] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046 [2]国家电投朝阳燕山湖发电有限公司,朝阳122000 [3]陆军航空兵学院,北京101123

出　　处：《热力透平》2017年第4期252-257,共6页Thermal Turbine

摘　　要：在响应国家节能减排的政策要求,提高能源的综合利用率的背景下,低真空供热技术近年来获得了快速的发展。以国内首台600MW超临界直接空冷机组双背压低真空供热改造为例,对影响改造的相关设计问题进行了全面的论述及分析。结果表明,改造后该机组成功实现了35/13kPa双背压低真空供热工况运行,达到了预期的设计效果,取得了圆满成功。To meet the demand of energy conservation and emission reduction policy as well as to improve the comprehensive utilization of energy, the low-vacuum heat supply technology has been developing rapidly in recent years. With the case of low-vacuum heat supply improved in the first domestic 600 MW supercritical ai~ cooling unit with dual back-pressure being used as an example, the design issues related to the retrofitting are discusssed and analized comprehensively. The result shows that the unit can operate under low-vacuum heat supply condition with 35/13 kPa dual back-pressure after improvement, and the expectant design effect has been successfully achieved.

关 键 词：汽轮机 热电联产 余热利用 低真空供热 双背压 热经济性 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]