A failure assessment method for "four tubes" of boilers based on on-site state inspection parameters

A technology for testing parameters and failure assessment, which is applied in the field of power industry and can solve problems such as cost increase

Active Publication Date: 2019-03-26
西安西热电站信息技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These conditions determine that the development of life assessment technology is limited to professional technical institutions and personnel. Although

Method used

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  • A failure assessment method for "four tubes" of boilers based on on-site state inspection parameters
  • A failure assessment method for "four tubes" of boilers based on on-site state inspection parameters
  • A failure assessment method for "four tubes" of boilers based on on-site state inspection parameters

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Experimental program
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Embodiment Construction

[0057] 1) Clarify the evaluation object and basic information

[0058] First of all, it is clear which part of the boiler's "four-pipe" economizer, water wall, superheater and reheater the evaluation object is. In order to know the actual state of each furnace tube of the component in detail, it is generally recommended to select multiple locations (straight pipe, elbow or weld) on a furnace tube for inspection. Since this inspection point will eventually participate in the failure probability assessment, Therefore, it can also be called an evaluation point. In addition, it is also necessary to collect basic information on the design pipe diameter, design wall thickness, and design material of clear evaluation points.

[0059] 2) Clarify the life cycle stage of the assessment object

[0060] The failure probability of the "four tubes" of the boiler is closely related to its life cycle stage. In the early stage of the life cycle of the components, the failure probability is h...

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PUM

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Abstract

Provided is a boiler 'four tubes' failure evaluation method based on field state inspection parameters, comprising the steps of determining the basic information of an evaluation object and evaluation points and the life cycle stage of the evaluation object, calculating a failure probability factor corresponding to the life cycle stage, acquiring field state inspection parameters according to an inspection scheme, calculating the failure probability caused by each parameter, evaluating the failure probability of each evaluation point on the basis, and finally, evaluating the failure probability of parts. According to the invention, there is neither need for evaluation personnel to have abundant life evaluation knowledge and experience nor need to bear additional test cost, the failure probability can be evaluated only by acquiring the field state inspection parameters of 'four tubes' of a boiler, and therefore, technicians in coal-fired power plants are directly helped to make repair and replacement strategies.

Description

technical field [0001] The invention belongs to the power industry and belongs to the technical field of boiler tube state evaluation in thermal power plants, and in particular relates to a failure evaluation method for boiler "four tubes" based on on-site state inspection parameters. Background technique [0002] The "four pipes" of thermal power plant boilers include water-cooled walls, superheaters, reheaters and economizers. Due to various reasons such as design materials, manufacturing, installation, operation and maintenance, four-pipe failure accidents frequently occur. According to statistics, "four pipes" every year Pipe" leakage accidents account for 60% of boiler unplanned downtime accidents, so it has attracted great attention from power production enterprises and inspection units. Especially in recent years, on the one hand, the four boiler tubes of the units put into operation in the 1990s have gradually entered the aging stage; Pressure and other operating pa...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/20
Inventor 王大鹏杜保华李耀君孙玺王智微吴智群
Owner 西安西热电站信息技术有限公司
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