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Method and system for classifying and detecting oxide scales in boiler pipes

A technology for scale and boiler application in the processing of detection response signals and the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids. Pipeline hazards and other issues to achieve the effect of avoiding the danger of pipe explosion

Active Publication Date: 2021-02-02
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

[0003] At present, the industry does not have an effective method to detect the scale accumulation degree in the heating surface pipeline, so it is impossible to evaluate the scale accumulation degree in the pipeline, and it is impossible to deal with it in a timely and effective manner according to the accumulation degree, so that it is impossible to effectively eliminate the cause Risk of tube explosion caused by scale peeling

Method used

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  • Method and system for classifying and detecting oxide scales in boiler pipes
  • Method and system for classifying and detecting oxide scales in boiler pipes
  • Method and system for classifying and detecting oxide scales in boiler pipes

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Embodiment 1

[0048] figure 1 A step-by-step flow chart of a method for graded detection of scale in boiler pipes provided in the embodiment of the present application.

[0049] like figure 1 As shown, the graded detection method of this embodiment is used to detect the scale generated in the boiler pipes after long-term operation, and output the graded detection results, especially for the detection of steam side pipes of power plant boilers. The graded detection method Specifically include the following steps:

[0050] S101: Detect the water-filled boiler pipe to be inspected to obtain the echo amplitude thereof.

[0051] The detection is to use the corresponding ultrasonic detection equipment to detect the boiler pipe to be inspected, and obtain the echo wave amplitude of the ultrasonic echo generated by the ultrasonic wave in the boiler pipe to be inspected. Specifically, two longitudinal wave straight probes are selected, one as the transmitting probe and the other as the receiving ...

Embodiment 2

[0088] Figure 4 A structural block diagram of a system for grading and detecting oxide scales in boiler pipes provided in an embodiment of the present application.

[0089] like Figure 4 As shown, the graded detection system of this embodiment is used to detect the scale generated in the boiler pipes after long-term operation, and output the graded detection results, especially for the detection of steam side pipes of power plant boilers. The graded detection system It specifically includes an ultrasonic detection module 30 , a table lookup calculation module 40 and an information output module 50 .

[0090] The ultrasonic detection module is used to detect the water-filled boiler pipe to be inspected to obtain the echo wave amplitude.

[0091] The detection is to use the corresponding ultrasonic detection equipment to detect the boiler pipe to be inspected, and obtain the echo wave amplitude of the ultrasonic echo generated by the ultrasonic wave in the boiler pipe to be ...

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Abstract

The invention provides a method and a system for performing grading detection on oxide skin in a boiler pipeline. The method particularly comprises the following steps: detecting a to-be-detected boiler pipeline filled with water by utilizing ultrasonic detection equipment to obtain echo wave amplitude of the to-be-detected boiler pipeline; according to the echo wave amplitude, seeking from a preset amplitude-oxide skin volume ratio reference curve to obtain oxide skin volume ratio corresponding to the echo wave amplitude; and according to the oxide skin volume ratio, outputting processing suggestion information for processing the to-be-detected boiler pipeline. Through the above detection, the stacking degree of the oxide skin in the boiler pipeline can be obtained and the processing suggestion information corresponding to the stacking degree can be acquired, so that corresponding measures can be taken according to the stacking degree or the processing suggestion information and the pipe explosion danger of the boiler pipeline can be avoided.

Description

technical field [0001] The present application relates to the technical field of boilers, and more specifically, to a method and system for grading detection of scale in boiler pipes. Background technique [0002] With the continuous increase of the unit capacity of power generation equipment and the continuous improvement of boiler operating parameters, the pipes on the steam side of power plant boilers are easily oxidized to produce oxide scales, and then the oxide scales will fall off. If the superheater, reheater and other heating surfaces of the boiler are oxidized and fall off, the pipeline will be blocked, which will cause the boiler tube to burst, which will damage the turbine blades and even seriously threaten the safe operation of large thermal power units. Therefore, it is an important means to prevent the boiler from bursting by adopting an appropriate method to detect the distribution of scale in the tube so that it can be disposed of in time according to the te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04G01N29/48
CPCG01N29/04G01N29/48
Inventor 王强张广兴牛晓光郝晓军王志永郑相锋代小号杨新军
Owner 国能锅炉压力容器检验有限公司
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