Analysis Method of Shafting Static Characteristics for Large Steam Turbine-Generators

doi:10.11930/j.issn.1004-9649.2017.02.052.05

Abstract

Abstract: The installation parameters of the shafting for large steam turbine-generators are directly related to the safe and stable operation of the unit. As a result, the installation catenarty curve should be designed reasonably to determine the bearing elevation and the static properties such as the loads, and be ensured during the installation. In this paper, the mathematical model based on the theory of three-moment equation and transfer matrix is established with the method to calculate the shafting’s catenarty curve and static characteristics and the computing program being proposed. Taking a shafting of a 1 000-MW level steam turbine-generator as an example, the catenarty curve and static characteristics of the shafting are calculated under the given boundary conditions and compared to the results of the finite element method. The comparison verifies the accuracy of the method, enabling it to provide technical support for the large shafting installation.

Key words: steam turbine-generator, shafting, catenarty curve, bearing elevation, transfer matrix method

CLC Number:

TK263.6

LI Wangfan, JIANG Jun, SUN Qing, WANG Chao, WANG Kun. Analysis Method of Shafting Static Characteristics for Large Steam Turbine-Generators[J]. Electric Power, 2017, 50(2): 52-56.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2017.02.052.05

https://www.electricpower.com.cn/EN/Y2017/V50/I2/52

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