Axial clearance calculation and differential expansion analysis of Dongfang Turbine Company Limited X300P turbine

Abstract

Abstract:

To cut down the power consumption level of a unit, No.2 turbine in a power plant upgraded its parameter.After the transformation, there were problems of large HP/IP cylinders differential expansion and worsening adaptability to varied load. Accordingly，it calculated and analyzed various clearances in flow passage of HP/IP cylinders, according to the structure and actual operating parameter of turbines.The parts that are prone to rubbing were found out. After analyzing the reason of differential expansion,suggestion and warnings for designing and manufacturing during reforming are put forward.

Key words:

turbine, axial clearance, parameter upgrade, flow passage upgrade, dynamic and static axial clearance calculation, power consumption, differential expansion

LIU Guanjun.

Axial clearance calculation and differential expansion analysis of Dongfang Turbine Company Limited X300P turbine

[J]. Huadian Technology, 2019, 41(1): 40-44.

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Axial clearance calculation and differential expansion analysis of Dongfang Turbine Company Limited X300P turbine

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