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Life estimation method and device of high-temperature thick-wall pipeline

A technology for life estimation and pipelines, which is applied to measuring devices, using one-time impact force to test the strength of materials, instruments, etc., can solve problems such as long time consumption, and achieve the effect of solving the problem of long time consumption and fast estimation time

Active Publication Date: 2019-01-01
国能锅炉压力容器检验有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, this application provides a method and device for estimating the life of high-temperature thick-walled pipelines, which are used to quickly estimate the life of high-temperature thick-walled pipelines in power stations, so as to solve the problem that traditional estimation methods take too long

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  • Life estimation method and device of high-temperature thick-wall pipeline
  • Life estimation method and device of high-temperature thick-wall pipeline
  • Life estimation method and device of high-temperature thick-wall pipeline

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Embodiment 1

[0049] figure 1 It is a flowchart of a method for estimating the life of a high-temperature thick-walled pipeline provided in an embodiment of the present application.

[0050] Such as figure 1As shown, the life estimation method provided in this embodiment is used to estimate the remaining life of the high-temperature thick-walled pipeline in the power station, and the life estimation method specifically includes the following steps:

[0051] S1. Sampling the high-temperature thick-walled pipeline in the initial state.

[0052] The sampling of the high-temperature thick-walled pipeline can be carried out before the pipeline is put into operation, or the current state can be taken as the initial state. A small sample is obtained by sampling as a pipe sample, which is used to make the initial test piece and the failure test piece. Due to less sampling, it will not have any impact on the structure, strength and life of high-temperature thick-walled pipelines.

[0053] S2. Ma...

Embodiment 2

[0088] image 3 A block diagram of a life estimation device for a high-temperature thick-walled pipeline provided in an embodiment of the present application.

[0089] Such as image 3 As shown, the life estimating device provided in this embodiment is used to estimate the remaining life of the high-temperature thick-walled pipeline in a power station. The life estimating device specifically includes a first sampling module 10, a sample processing module 20, a sample aging module 30, The second sampling module 40 and the life calculation module 50 .

[0090] The first sampling module is used for sampling the high-temperature thick-walled pipeline in an initial state.

[0091] The sampling of the high-temperature thick-walled pipeline can be carried out before the pipeline is put into operation, or the current state can be taken as the initial state. A small sample is obtained by sampling as a pipe sample, which is used to make the initial test piece and the failure test pie...

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Abstract

The invention provides a life estimation method and device of a high-temperature thick-wall pipeline. According to the life estimation method and device, by sampling the high-temperature thick-wall pipeline, a pipeline sample is obtained, the pipeline sample is used for producing multiple initial specimens and failure specimens, then small punch tests are conducted on the multiple initial specimens and failure specimens, through an obtained deflection-time curve, failure thickness is obtained, then an in-service high-temperature thick-wall pipeline is sampled and subjected to a small punch test to obtain corresponding equivalent thickness, and finally, according to the failure thickness, to-be-inspected thickness and in-service time, a residual life of the high-temperature thick-wall pipeline is calculated. Due to the fact that estimation time of the method is short, an endurance strength test is not needed to be conducted, therefore, the residual life can be estimated fast, and then the problem of excessive long time consumption of a traditional estimation method is solved.

Description

technical field [0001] The present application relates to the technical field of power generation, and more specifically, to a method and device for estimating the life of a high-temperature thick-walled pipeline. Background technique [0002] High-temperature thick-walled pipelines in power stations operate under high temperature and high pressure. With the prolongation of service time, the microstructure and mechanical properties of pipeline materials will change slowly. resulting in further component failure. The operating parameters of ultra (super) critical units are higher, and the parameters of power plant units are further improved. In order to ensure the safe operation of high-temperature thick-walled pipelines in power plants, it is necessary to estimate their life. [0003] The current life estimation of high-temperature thick-walled pipelines is based on the durability strength, that is, a section of the pipeline is cut off for the durability strength test, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/30
CPCG01N3/30G01N2203/001
Inventor 代小号郝晓军王强张广兴郑相锋王志永杨新军陶业成
Owner 国能锅炉压力容器检验有限公司
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