CN-122016900-A - Method, device and equipment for determining three-dimensional hydrogen distribution of girth welding joint

CN122016900ACN 122016900 ACN122016900 ACN 122016900ACN-122016900-A

Abstract

The application discloses a method, a device and equipment for determining three-dimensional hydrogen distribution of a girth welding joint, and relates to the technical field of hydrogen distribution characterization of metal materials. The method comprises the steps of constructing a three-dimensional sampling coordinate system according to the radial direction, the axial direction and the circumferential direction of a girth joint to be analyzed, further determining at least two samples to be analyzed and corresponding three-dimensional coordinate information, sequentially carrying out electrochemical hydrogen charging treatment and hydrogen microprinting reaction on the samples to be analyzed to obtain silver-containing particle deposition samples, determining silver particle distribution images by adopting a scanning electron microscope, correlating the silver particle distribution images with the three-dimensional coordinate information of each sample to be analyzed to obtain a silver particle spatial distribution data set, and determining a three-dimensional hydrogen distribution model of the girth joint to be analyzed by combining the preset corresponding relation between silver particle density and hydrogen content. According to the scheme, the intuitiveness and the accuracy of the determination of the three-dimensional hydrogen distribution of the girth weld joint are improved by establishing the three-dimensional sampling coordinate system and combining the improved hydrogen micro-printing and the three-dimensional reconstruction technology.

Inventors

JIANG YOUWEN
JIAO XIAOLI
QI LIPENG
SUN CHAO
SUN YONG
LIU XIN
ZHANG SHICHAO
HU YABO
YAN BINGCHUAN
FENG QINGSHAN
FU LIWU
DAI LIANSHUANG
GONG XULIANG
LI CHONGCHAO

Assignees

国家石油天然气管网集团有限公司
国家管网集团储运技术发展有限公司
管网集团(徐州)管道检验检测有限公司

Dates

Publication Date: 20260512
Application Date: 20260228

Claims (10)

1. A method for determining three-dimensional hydrogen distribution of a girth weld joint, comprising: Constructing a three-dimensional sampling coordinate system according to the radial direction, the axial direction and the circumferential direction of the girth welding joint to be analyzed, and determining at least two samples to be analyzed and three-dimensional coordinate information of each sample to be analyzed according to the three-dimensional sampling coordinate system; carrying out electrochemical hydrogen charging treatment on the sample to be analyzed to obtain a hydrogen-containing sample to be analyzed, and carrying out hydrogen micro-printing reaction on the hydrogen-containing sample to be analyzed by adopting a pre-prepared safe hydrogen micro-printing reagent to obtain a silver-containing particle deposition sample; Imaging the silver-containing particle deposition sample by adopting a scanning electron microscope to obtain a silver particle distribution image, and correlating the silver particle distribution image with three-dimensional coordinate information of each sample to be analyzed to obtain a silver particle spatial distribution data set; And determining a three-dimensional hydrogen distribution model of the girth welding joint to be analyzed according to the silver particle space distribution data set and the preset corresponding relation between the silver particle density and the hydrogen content.
2. The method according to claim 1, wherein the determining the three-dimensional hydrogen distribution model of the girth weld joint to be analyzed according to the silver particle spatial distribution dataset and the preset correspondence between silver particle density and hydrogen content comprises: according to a preset corresponding relation between silver particle density and hydrogen content, silver particle density data in the silver particle spatial distribution data set are converted into relative hydrogen content grades, and a hydrogen content spatial distribution data set is obtained; and carrying out three-dimensional reconstruction on the hydrogen content spatial distribution data set by adopting three-dimensional reconstruction software and a preset spatial interpolation algorithm to obtain a three-dimensional hydrogen distribution model of the girth welding joint to be analyzed.
3. The method of claim 1, wherein prior to correlating the silver particle distribution image with three-dimensional coordinate information of each sample to be analyzed to obtain a silver particle spatial distribution dataset, the method further comprises: carrying out gray enhancement and noise removal on the silver particle distribution image to obtain a processed silver particle distribution image, and extracting silver particle distribution data in the processed silver particle distribution image by adopting a preset image recognition algorithm; correspondingly, the silver particle distribution image is correlated with three-dimensional coordinate information of each sample to be analyzed to obtain a silver particle spatial distribution data set, which comprises the following steps: And correlating the silver particle distribution data with three-dimensional coordinate information of each sample to be analyzed to obtain a silver particle spatial distribution data set.
4. The method of claim 1, wherein determining three-dimensional coordinate information of at least two samples to be analyzed and each sample to be analyzed from the three-dimensional sampling coordinate system comprises: selecting at least two sampling layers in the three-dimensional sampling coordinate system, wherein the sampling layers cover a weld zone, a heat affected zone and a base metal zone of the girth weld joint to be analyzed; Dividing the sampling layers according to preset intervals for each sampling layer to obtain at least two samples to be analyzed, and determining three-dimensional coordinate information of each sample to be analyzed according to the three-dimensional sampling coordinate system and the samples to be analyzed.
5. The method of claim 1, wherein the pre-formulated safe hydrogen micro-printing reagent comprises a silver bromide-nitrite mixed emulsion and a cleaning solution, wherein the silver bromide-nitrite mixed emulsion is prepared from silver bromide powder, soluble nitrite and deionized water, and the cleaning solution is a mixed solution of 100-200g/L sodium thiosulfate and 100g/L sodium nitrite.
6. The method according to claim 1, wherein the electrochemical hydrogen-charging treatment of the sample to be analyzed to obtain a hydrogen-containing sample to be analyzed comprises: Immersing the sample to be analyzed serving as a cathode and a platinum electrode serving as an anode in electrolyte containing 0.2mol/L sulfuric acid and 2.5g/L thiourea, and carrying out constant-current hydrogen charging at room temperature at a current density of 1-15mA/cm 2 to obtain the sample to be analyzed.
7. A girth weld joint three-dimensional hydrogen distribution determining apparatus, comprising: The system comprises a sample to be analyzed and a coordinate information determining module, wherein the sample to be analyzed and the coordinate information determining module are used for constructing a three-dimensional sampling coordinate system according to the radial direction, the axial direction and the circumferential direction of the girth welding joint to be analyzed, and determining three-dimensional coordinate information of at least two samples to be analyzed and each sample to be analyzed according to the three-dimensional sampling coordinate system; the silver-containing particle deposition sample determining module is used for carrying out electrochemical hydrogen charging treatment on the sample to be analyzed to obtain the sample to be analyzed, and carrying out hydrogen micro-printing reaction on the sample to be analyzed by adopting a pre-prepared safe hydrogen micro-printing reagent to obtain the silver-containing particle deposition sample; The silver particle space distribution data set determining module is used for imaging the silver particle deposition sample by adopting a scanning electron microscope to obtain silver particle distribution images, and correlating the silver particle distribution images with three-dimensional coordinate information of each sample to be analyzed to obtain silver particle space distribution data sets; And the three-dimensional hydrogen distribution model determining module is used for determining a three-dimensional hydrogen distribution model of the girth welding joint to be analyzed according to the silver particle space distribution data set and the preset corresponding relation between the silver particle density and the hydrogen content.
8. An electronic device, comprising: one or more processors; A memory for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the girth joint three dimensional hydrogen profile determination method of any one of claims 1-6.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the girth joint three-dimensional hydrogen distribution determining method according to any one of claims 1 to 6.
10. A computer program product comprising a computer program which, when executed by a processor, implements the girth joint three dimensional hydrogen profile determination method according to any one of claims 1 to 6.

Description

Method, device and equipment for determining three-dimensional hydrogen distribution of girth welding joint Technical Field The embodiment of the application relates to the technical field of safe service of hydrogen transmission pipelines, in particular to the technical field of hydrogen distribution characterization of metal materials, and particularly relates to a method, a device and equipment for determining three-dimensional hydrogen distribution of a girth welding joint. Background The girth weld joint is a core connection part of pressure-bearing equipment such as a hydrogen transmission pipeline, a pressure vessel and the like, residual stress and microstructure non-uniformity generated in the welding process easily cause enrichment of hydrogen atoms at the core connection part, and the failure problems such as hydrogen induced cracking and the like are caused, so that the safe service of the pipeline and the equipment is seriously threatened. Therefore, the three-dimensional hydrogen distribution characteristic of the girth weld joint is accurately represented, and the method is a key precondition for revealing a hydrogen embrittlement mechanism and optimizing a welding process. In the prior art, no accurate characterization technology specially aiming at the three-dimensional hydrogen distribution of the girth weld joint is available, for example, atomic-level quantitative analysis can be realized by three-dimensional atomic probe chromatography, but the preparation difficulty of a sample is high, the testing cost is extremely high, the complex three-dimensional area of the girth weld joint is difficult to cover, and the thermal desorption spectrum technology can only measure the total hydrogen content, has no space resolution capability and can not reflect the local enrichment state of hydrogen. Disclosure of Invention The application provides a method, a device and equipment for determining three-dimensional hydrogen distribution of a girth joint, which are used for improving the intuitiveness and the accuracy of determining the three-dimensional hydrogen distribution of the girth joint. According to an aspect of the present application, there is provided a method for determining three-dimensional hydrogen distribution of a girth weld joint, the method comprising: Constructing a three-dimensional sampling coordinate system according to the radial direction, the axial direction and the circumferential direction of the girth welding joint to be analyzed, and determining at least two samples to be analyzed and three-dimensional coordinate information of each sample to be analyzed according to the three-dimensional sampling coordinate system; carrying out electrochemical hydrogen charging treatment on the sample to be analyzed to obtain a hydrogen-containing sample to be analyzed, and carrying out hydrogen micro-printing reaction on the hydrogen-containing sample to be analyzed by adopting a pre-prepared safe hydrogen micro-printing reagent to obtain a silver-containing particle deposition sample; Imaging the silver-containing particle deposition sample by adopting a scanning electron microscope to obtain a silver particle distribution image, and correlating the silver particle distribution image with three-dimensional coordinate information of each sample to be analyzed to obtain a silver particle spatial distribution data set; And determining a three-dimensional hydrogen distribution model of the girth welding joint to be analyzed according to the silver particle space distribution data set and the preset corresponding relation between the silver particle density and the hydrogen content. According to another aspect of the present application, there is provided a three-dimensional hydrogen distribution determining apparatus for a girth weld joint, the apparatus comprising: The system comprises a sample to be analyzed and a coordinate information determining module, wherein the sample to be analyzed and the coordinate information determining module are used for constructing a three-dimensional sampling coordinate system according to the radial direction, the axial direction and the circumferential direction of the girth welding joint to be analyzed, and determining three-dimensional coordinate information of at least two samples to be analyzed and each sample to be analyzed according to the three-dimensional sampling coordinate system; the silver-containing particle deposition sample determining module is used for carrying out electrochemical hydrogen charging treatment on the sample to be analyzed to obtain the sample to be analyzed, and carrying out hydrogen micro-printing reaction on the sample to be analyzed by adopting a pre-prepared safe hydrogen micro-printing reagent to obtain the silver-containing particle deposition sample; The silver particle space distribution data set determining module is used for imaging the silver particle deposition sample by adopting a scanning electron microscop