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Method and device for detecting surface of weld joint of nuclear fuel rod

A technology for welding seam surface and nuclear fuel rods, which is applied in image data processing, instruments, calculations, etc., can solve the problems that detection sensitivity cannot find small defects of fuel rods, and the influence of direction, so as to achieve the effect of rapid detection and unified detection.

Pending Publication Date: 2019-07-05
CNNC JIANZHONG NUCLEAR FUEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The detection sensitivity of these techniques cannot detect tiny defects on the surface of fuel rods and is affected by orientation

Method used

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  • Method and device for detecting surface of weld joint of nuclear fuel rod
  • Method and device for detecting surface of weld joint of nuclear fuel rod
  • Method and device for detecting surface of weld joint of nuclear fuel rod

Examples

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Embodiment 1

[0022] figure 1 It is a flow chart of a method for detecting the surface of a nuclear fuel rod weld seam provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of detecting surface defects of weld seam. Typically, this embodiment is applicable to the inspection of the weld seam at the end of nuclear fuel cladding. The method can be implemented by a device for detecting the surface of a weld seam of a nuclear fuel rod, and the device can be realized by software and / or hardware. like figure 1 As shown, a method for detecting the surface of a nuclear fuel rod weld provided in this embodiment may specifically include the following steps:

[0023] Step 110, acquiring the overall 3D point cloud data of the weld surface to be tested.

[0024] Wherein, the surface of the weld seam to be tested is the surface of the weld seam that needs to be inspected for defects.

[0025] Typically, the weld surface to be tested is the weld formed by ar...

Embodiment 2

[0070] Figure 4 It is a flow chart of a method for detecting the surface of a nuclear fuel rod weld seam provided by Embodiment 2 of the present invention. This embodiment is an optional solution proposed on the basis of the foregoing embodiments. Such as Figure 4 As shown, a method for detecting the surface of a nuclear fuel rod weld provided in this embodiment may specifically include the following steps:

[0071] Step 410, acquiring the overall 3D point cloud data of the weld surface to be tested.

[0072] Step 420, based on the depth information in the overall 3D point cloud data, determine the surface defect of the weld seam to be tested.

[0073] Step 430: Determine at least two defect elements from each defect according to the number of rows and columns included in each defect on the surface of the weld to be tested.

[0074] Wherein, each of the above-mentioned defects is a defect area included in the surface defects of the weld.

[0075] Specifically, for each ...

Embodiment 3

[0099] Figure 5 A structural diagram of a device for detecting the surface of a nuclear fuel rod weld seam provided by Embodiment 3 of the present invention. A method for surface detection of nuclear fuel rod welds provided by any embodiment of the present invention can be implemented, see Figure 5 , a device for nuclear fuel rod weld surface inspection provided by an embodiment of the present invention includes: a 3D point cloud data acquisition module 510 and a surface defect determination module 520 .

[0100] Wherein, the 3D point cloud data acquisition module 510 is used to acquire the overall 3D point cloud data of the weld surface to be tested.

[0101] The surface defect determining module 520 is configured to determine the surface defect of the weld seam to be tested based on the depth information in the overall 3D point cloud data.

[0102]The embodiment of the present invention realizes automatic defect detection on the surface of the weld to be tested based on ...

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Abstract

The embodiment of the invention discloses a method and device for detecting the surface of a weld joint of a nuclear fuel rod, and relates to the technical field of object detection. The method comprises the steps of obtaining the overall 3D point cloud data of the surface of a to-be-measured welding seam; and based on the depth information in the integral 3D point cloud data, determining the surface defect of the to-be-detected welding seam. According to the method, the device, the equipment and the medium for detecting the surface of the weld joint of the nuclear fuel rod provided by the embodiment of the invention, the accurate, rapid and unified detection on the surface defect of the weld joint is realized.

Description

technical field [0001] The invention relates to the technical field of object detection, in particular to a method and a device for detecting the surface of a nuclear fuel rod weld. Background technique [0002] Nuclear fuel rods are the first safety barrier of nuclear reactors and play a vital role in preventing nuclear leakage. Excessive surface defects of nuclear fuel rod cladding and welds may cause damage to nuclear fuel rods and directly affect the safe operation of nuclear power plant reactors. Therefore, the detection of nuclear fuel rod cladding and weld surface defects is necessary. [0003] At present, the surface inspection method of fuel rods is usually manual visual inspection, and the depth of the damage is measured with a microscope after the defect is found. Due to the subjectivity and limitations of human beings in the judgment of defects, it is often only possible to detect some serious defects to a certain extent. , but some subtle defects cannot be det...

Claims

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/0008G06T2207/10012G06T2207/30152
Inventor 谭耘邓话张多军瞿小龙彭海青尤亚飞龙鑫云陈浩戚翔尔朱江兵牛广升肖鸣波金鳞徐小武
Owner CNNC JIANZHONG NUCLEAR FUEL
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