Lectotype of axial flow forced draft fan with adjustable rotating blades for a 600MW unit:margin analysis and energy saving reconstruction

NING Xinyu; WANG Shuangtong

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Lectotype of axial flow forced draft fan with adjustable rotating blades for a 600MW unit:margin analysis and energy saving reconstruction

Thermal Power Generation Vol. 43, Issue 4, Pages: 15-20(2014)

更新时间：2025-09-28

- Lectotype of axial flow forced draft fan with adjustable rotating blades for a 600MW unit:margin analysis and energy saving reconstruction
- 作者机构：
  
  国电科学技术研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH443
- Published：2014
- 稿件说明：
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NING Xinyu, WANG Shuangtong. Lectotype of axial flow forced draft fan with adjustable rotating blades for a 600MW unit:margin analysis and energy saving reconstruction[J]. Thermal Power Generation, 2014, 43(4): 15-20.
DOI：

NING Xinyu, WANG Shuangtong. Lectotype of axial flow forced draft fan with adjustable rotating blades for a 600MW unit:margin analysis and energy saving reconstruction[J]. Thermal Power Generation, 2014, 43(4): 15-20. DOI：

摘要

通过调研30台600 MW级机组动叶可调轴流式送风机的设备选型及实际运行状况

发现部分送风机存在选型偏大、电机容量与风机容量不匹配等问题

这会增加机组的初期投资

降低风机实际运行效率

增加电耗。建议将送风机选型的流量裕度控制在5%左右

风机电机功率控制在1 500kW以内

并对裕量偏大的送风机进行降速降容节能改造。

Abstract

According to survey of equipment code and practical operation state of axial-flow forced draft fan with adjustable rotating blades in some 600MW units

such problems as overlarge type selection

mismatch between the electric motor capacity and the fan capacity were found

which may increase the unit initial investment

decrease the actual operation efficiency of the axial-flow forced draft fan

and raise the electricity consumption.It suggested that the flow margin during type selection of the forced draft fan should be controlled at about 5%

and the motor power be within 1 500kW.Besides

the economical benefit comparison between capacity-decreasing speedreduction retrofit and frequency conversion retrofit was performed.For reconstruction of the axial flow forced draft fan

the capacity-decreasing speed-reducing retrofit was suggested.

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