Optimization of air preheater leakage control system in 670MW unit

Abstract

Abstract:

There is increasing gap between the sector plate and the rotor radial seal plate of the air preheater in 670MW unit of Huadian Weifang Power Generation Company Limited.An optimization method of control system is proposed to address the air preheater leakage. Linear variable differential transformer (LVDT) is used to measure the travel distance of the lifting mechanism, which can control the travel of sector plate accurately and effectively reduce the air leakage rate of air preheater under the premise of stable operation. The economy of unit can be improved.The method can provide reference for the safe and economic operation of units of the same type.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">air preheater, air leakage rate, LVDT, sector plate, rotor

SONG Baoyu，YUE Hao.

Optimization of air preheater leakage control system in 670MW unit [J]. Huadian Technology, 2019, 41(9): 76-77.

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Optimization of air preheater leakage control system in 670MW unit

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