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Method for evaluating life of generator rotor and rotor retaining ring

A technology of generator rotor and rotor guard ring, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of not establishing a suitable life evaluation method and so on

Inactive Publication Date: 2011-04-20
EAST CHINA ELECTRIC POWER TEST & RES INST
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Problems solved by technology

[0003] But at present, for steam turbine generator sets, only relatively mature stress analysis and life evaluation technologies have been established for high and medium pressure rotors of steam turbines, valve casings, cylinders, steam drums and headers of boilers, but for power generation The rotor of the machine and some important rotating parts such as the retaining ring have not established a suitable life evaluation method.

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  • Method for evaluating life of generator rotor and rotor retaining ring
  • Method for evaluating life of generator rotor and rotor retaining ring

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Embodiment Construction

[0015] The life evaluation method of the generator rotor and the rotor guard ring of the present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0016] According to the life evaluation method of a kind of thermal power plant generator rotor and rotor guard ring of the present invention, its establishment process is:

[0017] Through the analysis of the structure and working principle of the generator rotor and rotor guard ring, determine the heat exchange mechanism of the components in different operating stages, so as to determine the working boundary conditions of the generator rotor and rotor guard ring; through the force analysis of the above components , to determine its mechanical model and calculation model; use the finite element method to calculate and analyze the temperature field and stress field; analyze the damage mechanism according to the calculation results, so as to establish a life assessment...

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Abstract

The invention relates to a method for evaluating the life of a generator rotor and a rotor retaining ring. The method comprises the following steps of: A, determining various states of the rotor and the rotor retaining ring and performing thermal influence analysis; B, establishing a system model for a temperature field and a stress field of the rotor and the rotor retaining ring; C, performing finite element computational analysis on the system model of the temperature field and the stress field; and D, performing life damage analysis. According to the life evaluation method, the effect of effectively evaluating the service life of the generator rotor and the rotor retaining ring can be achieved, and the life evaluation technology of the whole steam turbine generating set is perfected.

Description

technical field [0001] The invention relates to a life evaluation method for generator equipment in a thermal power plant, in particular to a life evaluation method for a generator rotor and a rotor guard ring in a thermal power plant. Background technique [0002] Life assessment of steam turbine generator set in thermal power plant is an important technical measure to ensure safe and reliable operation of the unit. In recent years, the life assessment of key components such as steam turbine rotor and boiler drum has been relatively mature, and it has played an important role in guiding the safe operation of the unit, determining a reasonable start-up and shutdown method, and safety assessment of the unit participating in peak regulation. . Especially when the life assessment technology is used in the field of unit modification and condition maintenance, the integrity of the technology is very important. [0003] But at present, for steam turbine generator sets, only rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY04S40/22Y02E60/76Y02E60/00
Inventor 李颖祝瑞金
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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