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Supercritical or ultra-supercritical boiler steam-water separator tube socket and connecting tube state evaluation method

A technology of ultra-supercritical boilers and steam-water separators, which is applied in the fields of instruments, geometric CAD, design optimization/simulation, etc., and can solve the problems of power plant maintenance costs and labor cost increases

Active Publication Date: 2021-09-24
XIAN THERMAL POWER RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These complicated conditions determine that the development of technologies such as stress analysis and life loss calculation is limited to professional technical institutions and personnel, and the collection of these basic materials and data, complete and comprehensive metal inspection and laboratory analysis will lead to power plant maintenance costs and increase in labor costs

Method used

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  • Supercritical or ultra-supercritical boiler steam-water separator tube socket and connecting tube state evaluation method
  • Supercritical or ultra-supercritical boiler steam-water separator tube socket and connecting tube state evaluation method
  • Supercritical or ultra-supercritical boiler steam-water separator tube socket and connecting tube state evaluation method

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Embodiment Construction

[0084] The present invention will be further described below in conjunction with the accompanying drawings and examples of implementation.

[0085] Such as figure 1 Shown:

[0086] 1) Clarify the evaluation object and basic information

[0087] First of all, it is clear that the evaluation object is the supercritical or ultra supercritical boiler steam-water separator nozzle and socket.

[0088] In addition, it is also necessary to collect and clarify the design drawings, design diameter, design wall thickness, design material and the latest maintenance record file of the evaluation object.

[0089] 2) Clear detailed evaluation points

[0090] In order to understand the actual state of the evaluation object in detail, it is generally recommended to select multiple locations (connectors and pipe sockets) for inspection on the evaluation object. Since the inspection points will eventually participate in the state evaluation, they are also called evaluation points. And the e...

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Abstract

The invention discloses a supercritical or ultra-supercritical boiler steam-water separator tube base and connecting tube state evaluation method. The method comprises the following steps of: 1) determining an evaluation object and basic information; 2) determining detailed evaluation points; 3) determining the specific stage of the full operation life cycle of the evaluation object; 4) calculating a state factor; 5) calculating a correction factor; 6) formulating and implementing a metal inspection scheme; 7) obtaining a metal inspection result; 8) evaluating the state of the evaluation point; 9) evaluating the state of the evaluation object; and 10) filing and feeding back evaluation results. The method can help thermal power plant technical boilers or metal professionals to make maintenance strategies better.

Description

technical field [0001] The invention belongs to the technical field of state evaluation of thermal power plant equipment, in particular to a method for state evaluation of a supercritical or ultra-supercritical boiler steam-water separator pipe seat and connecting pipe. Background technique [0002] Supercritical or ultra-supercritical boiler steam-water separator is an important part of the boiler system of thermal power plants. The steam-water separator is in relatively harsh working conditions during operation, and is easily affected by thermal alternating loads. In particular, there is a large stress concentration phenomenon in the pipe seat and the connecting pipe area of ​​the steam-water separator. The more the pipes are, the more obvious the stress concentration is. Moreover, the welds at the pipe seat are dense. Under the influence of high temperature and high pressure variable load, the weld seam The deterioration of the organizational state and the fragility of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/20G06F113/14G06F119/02G06F119/14
CPCG06F30/17G06F30/20G06F2119/02G06F2113/14G06F2119/14
Inventor 王大鹏杜保华吴智群黄廷辉何新
Owner XIAN THERMAL POWER RES INST CO LTD