Hydropower station factory building vibration evaluation method based on finite-element dynamic analysis

A technology for hydropower plant and dynamic analysis, which is applied in the field of water conservancy and hydropower engineering, can solve problems such as the lack of vibration control standards for dynamic analysis of hydropower plant, and achieve the effect of authentic evaluation results and comprehensive analysis

Inactive Publication Date: 2017-10-17
POWERCHINA CHENGDU ENG
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Problems solved by technology

[0011] The technical problem solved by the present invention is: there is currently no vibrat

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  • Hydropower station factory building vibration evaluation method based on finite-element dynamic analysis
  • Hydropower station factory building vibration evaluation method based on finite-element dynamic analysis
  • Hydropower station factory building vibration evaluation method based on finite-element dynamic analysis

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[0034] The present invention will be further described below with reference to the drawings and specific embodiments.

[0035] Wherein, the method for evaluating vibration of a hydropower plant powerhouse based on finite element dynamic analysis of the present invention includes the following steps:

[0036] a. Perform finite element dynamic analysis on the powerhouse of the hydropower station, and the calculation conditions are the rated operating conditions of the powerhouse of the hydropower station;

[0037] b. According to the calculation results of the above finite element dynamic analysis, the following specific data are calculated and obtained: the horizontal amplitude A1 (mm), the vertical amplitude A2 (mm), and the peak horizontal velocity V1 (mm / s) and the peak vertical speed V2 (mm / s); the horizontal amplitude A3 (mm), the vertical amplitude A4 (mm), and the peak horizontal speed V3 (mm / s) of the floor part 4 on the generator floor in the hydropower plant And the peak v...

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Abstract

The invention discloses a hydropower station factory building vibration evaluation method based on finite-element dynamic analysis and belongs to the field of water conservancy and hydropower. The method is used for solving the problem that a vibration control standard aiming at hydropower station factory building dynamic analysis based on a finite-element method does not exist. Aiming at a generator pier part of a hydropower station factory building and a floor part which is located on an electric generator layer, the vibration control standard based on finite-element dynamic analysis is provided respectively; the problem that the vibration control standard of the hydropower station factory building based on finite-element dynamic analysis does not exist is solved, and meanwhile aiming at different structural parts of the hydropower station factory building, the vibration control numerical range of each part is also provided respectively; accordingly, the vibration condition analysis of the hydropower station factory building structure based on finite-element dynamic analysis can be more comprehensive, and then evaluation results are more real and valuable. According to the method, aiming at a volute part and a draft tube of the hydropower station factory building, vibration evaluation standards can be further provided respectively, and more comprehensive evaluation is achieved.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a method for evaluating vibration of a powerhouse of a hydropower station based on finite element dynamic analysis. Background technique [0002] The powerhouse of a hydropower station is a powerhouse. Because it is usually affected by external loads such as machinery and hydraulics, the vibration problem of the powerhouse is very common. When designing the powerhouse structure of a hydropower station, structural dynamic analysis is generally required to determine whether the vibration value meets the requirements, and then evaluate whether the structural design of the powerhouse is reasonable. [0003] At present, the evaluation of whether the powerhouse vibration meets the requirements is generally carried out in accordance with the "Code for Design of Powerhouses for Hydropower Stations" (NB / T35011-2013). Article 6.3.7 of this code stipulat...

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Application Information

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IPC IPC(8): G06F17/50G06Q50/06
CPCG06F30/23G06F2111/04G06F2119/06G06Q50/06
Inventor 肖平西罗乾坤胡晓文侯攀谭可奇卢薇吕文龙张志军马玉岩
Owner POWERCHINA CHENGDU ENG
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