A Fatigue Evaluation Method and System for Nuclear Power Plant Pipeline Thermal Delamination Effect

A technology of fatigue evaluation and thermal stratification, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as high technical difficulty, large resource consumption, and inaccurate evaluation results, so as to reduce technical difficulty and save The effect of resource consumption

Active Publication Date: 2019-05-17
中广核工程有限公司 +1
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Problems solved by technology

[0013] The embodiment of the present application provides a method and system for fatigue evaluation of nuclear power plant pipeline thermal delamination effect, which solves the technical problems of high resource consumption, high technical difficulty and inaccurate evaluation results of nuclear power plant pipeline thermal delamination effect fatigue evaluation in the prior art. The technical effect of saving resource consumption in fatigue evaluation of pipeline thermal delamination effect, reducing the technical difficulty of pipeline thermal delamination effect fatigue evaluation and obtaining more accurate fatigue evaluation results in line with actual application conditions is realized

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  • A Fatigue Evaluation Method and System for Nuclear Power Plant Pipeline Thermal Delamination Effect
  • A Fatigue Evaluation Method and System for Nuclear Power Plant Pipeline Thermal Delamination Effect
  • A Fatigue Evaluation Method and System for Nuclear Power Plant Pipeline Thermal Delamination Effect

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Embodiment 1

[0068] The embodiment of this application provides a fatigue evaluation method for thermal delamination effect of nuclear power plant pipelines, please refer to figure 2 , the method comprises the steps of:

[0069] S1. Based on the actual dynamic characteristics of the liquid in the pipeline of the nuclear power plant, analyze and obtain the parameters of the thermal stratification distribution law of the pipeline;

[0070] S2. Obtain a thermal delamination stress parameter of the pipeline based on the thermal delamination distribution rule parameter;

[0071] S3. Perform thermal delamination effect fatigue evaluation on the pipeline based on the thermal delamination stress parameters, obtain a fatigue cumulative use factor of the pipeline, and evaluate whether the design of the pipeline is qualified based on the fatigue cumulative use factor.

[0072] Taking the wave pipe and main pipe of the pressurized water reactor nuclear power plant in service as an example, first of ...

Embodiment 2

[0118] Based on the same inventive concept, the embodiment of this application also provides a fatigue evaluation system for thermal delamination effect of nuclear power plant pipelines, please refer to Figure 9 , where the system includes:

[0119] The thermal stratification distribution rule parameter acquisition unit 901 is used to analyze and obtain the thermal stratification distribution rule parameter of the pipeline based on the actual dynamic characteristics of the liquid in the pipeline of the nuclear power plant;

[0120] A thermal delamination stress parameter acquisition unit 902, configured to obtain a thermal delamination stress parameter of the pipeline based on the thermal delamination distribution rule parameter;

[0121] The fatigue evaluation unit 903 is configured to perform thermal delamination effect fatigue evaluation on the pipeline based on the thermal delamination stress parameters, obtain the fatigue cumulative use factor of the pipeline, and evalua...

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Abstract

The invention discloses a nuclear power plant pipe thermal stratification effect fatigue evaluation method and system, which are used for solving the technical problems that the consumption of resources for nuclear power plant pipe thermal stratification effect fatigue evaluation in the prior art is great, the technical difficulty is great and the evaluation results are not accurate. The method comprises the steps of analyzing to obtain a thermal stratification distribution rule parameter of a pipe based on actual dynamic features of liquid in the pipe; obtaining a thermal stratification stress parameter of the pipe based on the thermal stratification distribution rule parameter; conducting thermal stratification effect fatigue evaluation to the pipe based on the thermal stratification stress parameter, obtaining a fatigue accumulation use factor of the pipe, and judging whether the design of the pipe is qualified or not based on the fatigue accumulation use factor.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant pipeline design, in particular to a fatigue evaluation method and system for nuclear power plant pipeline thermal layering effect. Background technique [0002] Pipes are widely used, mainly in water supply, drainage, heat supply, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. The fatigue cumulative use factor of the pipeline (a positive number less than or equal to 1) is an important parameter to measure the service life of the pipeline. Specifically, the smaller the value of the fatigue cumulative use factor, the longer the service life of the pipeline. Relatively, the fatigue cumulative use factor The closer the value of is to 1, the shorter the service life of the pipeline. It can be seen that before the pipeline design, the estimation of the fatigue cumulative service factor of the pip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 徐晓金挺
Owner 中广核工程有限公司
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