沈峰,朱鹏达,谭锐
SHEN Feng,ZHU Pengda,TAN Rui

• 1:国电科学技术研究院

摘要(Abstract)：

200 MW机组三缸三排汽式汽轮机由于其特殊的设计方式,在早期供热改造后供热能力较差,能耗指标较高。对此,首先通过供热升级改造,将汽轮机的通流方式由三排汽改为两排汽,提高机组的供热可调节能力。在此基础上,为进一步降低机组的发电煤耗,进行高背压供热改造,改造后机组的控制能力较差,则利用发电厂内其他机组进行调峰,以最大限度发挥改造机组的经济性优势。
Due to its special design mode, a 200 MW triple-cylinder triple-exhaust steam turbine is low in heat supply capacity and its energy consumption index is high after retrofit long before. Therefore, throughflow of the unit is transformed from three exhausts into two ones to improve its adjustable heat supply capacity. On the basis, the use of high back pressure heat supply transformation is implemented to further reduce coal consumption of generating units. After transformation, control capacity of the unit is poor, and other units in the plant are used for peak shaving to exert economic advantage of the transformed unit to the great extent.

关键词(KeyWords)： 三缸三排汽;供热;高背压;煤耗率
triple-cylinder triple-exhaust;heat supply;high back pressure;coal consumption rate

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 沈峰,朱鹏达,谭锐
SHEN Feng,ZHU Pengda,TAN Rui

DOI: 10.19585/j.zjdl.2017.03.012

参考文献(References)：

• [1]钟史明,章礼道,于希曾,等.N200-12.75/535/535型三缸三排汽汽轮机组供热改造成热电两用机[J].区域供热,2006(2):6-13.
• [2]孔令先,李继伟,李宏伟,等.220 MW汽轮机组供热改造研究与应用[J].节能技术,2010,28(4):319-322.
• [3]林闽城.300 MW纯凝机组供热改造技术可行性分析[J].浙江电力,2010,29(3):40-43.
• [4]林俊光,任渊源,张卫灵,等.两种利用电厂热量采暖供热的方案比较[J].浙江电力,2013,32(10):55-57.
• [5]王学栋,姚飞,郑威,等.两种汽轮机高背压供热改造技术的分析[J].电站系统工程,2013,29(2):47-50.
• [6]李文涛,袁卫星,付林,等.汽轮机高背压供热方式能耗分析[J].区域供热,2015(4):10-17.
• [7]刘伟,王建强,谢安进,等.215 MW机组供热改造后的控制策略及运行[J].浙江电力,2014,33(1):38-42.
• [8]江浩,黄嘉驷,王浩.200 MW高背压循环水供热机组热力特性研究[J].热力发电,2015,44(4):17-21.
• [9]张玉中.浅析集中供热系统运行调节方案[J].区域供热,2014(4):64-66.