华电技术 ›› 2016, Vol. 38 ›› Issue (11): 72-75.

• 节能与环保 • 上一篇    

某燃气轮机电厂余热利用系统风机故障模拟分析

  

  1. 1.中国华电集团科学技术研究总院有限公司,北京〓100160; 2.华电(北京)热电有限公司,北京〓100160;3.上海华电闵行能源有限公司,上海〓201100
  • 出版日期:2016-11-25

Simulation analysis of draught fan fault for waste heat utilization system of a certain gas turbine power plant

  1. 1.China Huadian Science and Technology Institute Company Limited, Beijing 100160, China; 2.Huadian (Beijing) Thermal Power Company Limited, Beijing 100160, China
  • Published:2016-11-25

摘要:

摘要:余热利用系统风机故障时,烟气无法通过正常系统排出,需要迅速打开余热锅炉烟囱挡板,可能导致烟气排出异常,燃气轮机出口背压会有一定的变化,进而触发燃气轮机背压保护。在建立物理模型和数学模型的基础上,对风机全故障、半故障、单机故障3种工况进行了评估,指出单机故障时对整个系统的影响较小,余热锅炉烟囱隔板在15s内打开,能够基本保证燃气轮机出口背压正常。

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Abstract:

Abstract:When the draught fan fault of waste heat utilization system occurs, the flue gas could not be discharged through normal system and it need open the flue gas damper of waste heat boiler quickly. In addition, the abnormal discharge of flue gas may lead to the variation of back pressure at gas turbine outlet, and then trigger the back pressure protection of gas turbine. Based on the established physical and mathematical models, this paper evaluated three operating conditions of full fault, semi fault and unit fault of draught fan, and pointed out that the unit fault had little influence on the whole system. If the flue gas damper of waste heat boiler is opened in 15 seconds, the back pressure at gas turbine outlet could be kept normal basically.

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