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Vibration response calculation method of base casing of steam turbine generator

A turbo-generator and vibration response technology, which is applied to measuring devices, instruments, and measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as optimization and adjustment of the vibration characteristics of the generator frame structure, and achieve the effect of expanding the scope of application

Active Publication Date: 2016-04-13
SHANGHAI POWER EQUIP RES INST +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] In addition, because the existing design calculation model does not take into account the boundary of simulating the actual installation and operation of the site, it is impossible to accurately analyze the optimization and adjustment of the vibration characteristics of the generator frame structure

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  • Vibration response calculation method of base casing of steam turbine generator
  • Vibration response calculation method of base casing of steam turbine generator
  • Vibration response calculation method of base casing of steam turbine generator

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Embodiment Construction

[0042] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0043] figure 1 and figure 2 Respectively, the turbogenerator frame, rotor bearing and foundation system used in this embodiment are front and left schematic diagrams, and the turbogenerator frame, rotor bearing and foundation system are composed of frame 1, rotor 2, bearing 3. Machine base shell 4, machine base shell rib plate 5, iron core 6, concrete foundation 7, end cover and cover bearing seat 8, hydrogen cooler 9, foot 1...

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Abstract

The invention provides a vibration response calculation method of a base casing of a steam turbine generator. Casing side parts of a generator base is equivalent to a beam piece and concentrated weight combination according to the weight and structural rigidity; base feet are connected with a base plate, and elastic elements of different connection rigidities are obtained by simulating four-corner bottom load distribution data of the base; concrete foundation of the steam turbine generator is equivalent to a 3D model taking a beam unit as the principle, and the concrete foundation and the base casing form a substructure model; the base casing, the basic substructure model and a generator rotor system are rigid damping connection via bearing dynamic oil films. According to the invention, influence of factors ,including the rotor entity structure, the force of the bearing dynamic oil films, bearing boundary change of the base plate load distribution of the generator base and vibration of the basic structure, on the vibration frequency and response of the generator base casing is taken into consideration completely, and an analysis model which satisfies the practical operation state more is provided for calculating vibration characteristics of the base casing of the steam turbine generator.

Description

technical field [0001] The invention relates to a method of simulating the on-site operation state, that is, calculating the vibration response calculation of the frame shell of the steam turbine generator under the conditions of the solid structure of the generator rotor, the dynamic oil film force of the bearing, the change of the bottom load of the frame, and the influence of the basic structure of the generator. The method belongs to the technical field of power station steam turbine generators. Background technique [0002] In order to avoid excessive vibration of the key parts of the frame shell of the turbogenerator during operation, causing safety accidents such as leakage of important pipelines such as cooling water and hydrogen, and excessive noise, and to ensure the normal operation of the unit, the existing thermal power or nuclear power steam In the design of turbogenerator, it is necessary to calculate the natural frequency of the frame and the vibration respon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 孙庆张兴田李汪繁司先国蒋俊史庆峰王秀瑾邓志成
Owner SHANGHAI POWER EQUIP RES INST
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