CN114910025A - Electromagnetic ultrasonic thickness measurement contrast test block - Google Patents
Electromagnetic ultrasonic thickness measurement contrast test block Download PDFInfo
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- CN114910025A CN114910025A CN202210384757.XA CN202210384757A CN114910025A CN 114910025 A CN114910025 A CN 114910025A CN 202210384757 A CN202210384757 A CN 202210384757A CN 114910025 A CN114910025 A CN 114910025A
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- pipeline
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- pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a reference test block for electromagnetic ultrasonic thickness measurement, which comprises a test block body, and a plurality of natural corrosion notches, holes and standard measurement steps which are arranged on the test block body. Further, the plurality of natural etching grooves, holes and standard measuring steps comprise natural etching grooves with different depths at 12 positions, holes with different sizes and depths at 12 positions and standard measuring steps at 6 positions. On the premise of meeting the use requirement, the test block is convenient to operate and wide in application range, the comprehensive measurement of the pipeline from thin to thick is realized, and the calibration of an instrument, the verification of the detection capability of instrument equipment and the evaluation and analysis of the pipeline safety risk can be realized more quickly, better and more intuitively.
Description
Technical Field
The invention relates to a reference block for electromagnetic ultrasonic thickness measurement, which is used for monitoring the thinning degree and safety risk evaluation of a pipeline after being corroded in the service process by matching with an electromagnetic ultrasonic instrument.
Background
With the continuous progress of science and technology, the safety condition of some metal containers or pipelines used in service is more and more complicated. With the time, different mediums contained in the device can corrode the inner wall of the device to different degrees. The detection of the thickness of the pipeline is an effective method for finding defects such as uneven thickness, corrosion, thinning and the like. At present, pipeline transportation plays an important role in national economy, but with the increase of pipelines and the increase of the age of the pipelines, pipeline leakage accidents caused by corrosion, abrasion, accidental damage and the like occur, and the safety of lives and properties and the ecological environment are seriously threatened. The detection of the thickness of the pipeline plays an important role in the industries such as nuclear power, petroleum, chemical engineering, pressure vessels, aerospace and the like. Among many nondestructive testing techniques, electromagnetic ultrasonic thickness measurement is widely applied due to the advantages of low cost, wide application, relatively high testing precision and the like.
At present, the traditional piezoelectric ultrasonic technology is mainly adopted at home and abroad to measure the thickness of the metal pipeline. When the technology is used for detection, in order to ensure that ultrasonic energy is smoothly transmitted to a metal pipeline from a transducer, a coupling agent (paste, engine oil, water and the like) is usually required to be smeared on the surface of the pipeline through pretreatment such as cleaning, polishing and the like, an instrument is required to be calibrated through a standard step test block, safety risk assessment and further analysis cannot be given when the thickness of the pipeline is reduced and the pipeline is corroded, and the efficiency and the application range of ultrasonic thickness measurement are seriously influenced.
Disclosure of Invention
In order to solve the problems and facilitate field detection and safety risk assessment work, the invention provides a reference block for electromagnetic ultrasonic thickness measurement.
The invention is realized by adopting the following technical scheme:
a reference test block for electromagnetic ultrasonic thickness measurement comprises a test block body, and a plurality of natural corrosion notches, holes and standard measurement steps which are arranged on the test block body.
A further improvement of the invention is that the plurality of natural erosion notches, holes and standard measurement steps comprise natural erosion notches of different depths at 12, holes of different sizes and depths at 12 and standard measurement steps at 6.
The further improvement of the invention is that the natural corrosion notches with different depths at 12, the holes with different sizes and depths at 12 and the standard measuring steps at 6 are uniformly distributed on the inner wall of the pipeline at the position of 45 degrees with paint and the position of 135 degrees without paint.
The invention is further improved in that the natural corrosion notches with different depths at 12 positions comprise 6 natural corrosion notches which are symmetrically arranged on the inner wall of the pipeline and have different depths relative to the wall thickness of the pipeline, and the natural corrosion notches are used for referring to the corrosion of the pipeline in service and evaluating the corrosion degree.
The invention is further improved in that the natural corrosion grooves with different depths comprise grooves with the natural corrosion depth of 5% of the wall thickness of the pipeline, grooves with the natural corrosion depth of 10% of the wall thickness of the pipeline, grooves with the natural corrosion depth of 20% of the wall thickness of the pipeline, grooves with the natural corrosion depth of 30% of the wall thickness of the pipeline, grooves with the natural corrosion depth of 40% of the wall thickness of the pipeline and grooves with the natural corrosion depth of 50% of the wall thickness of the pipeline.
The invention is further improved in that the holes with different sizes and depths at 12 positions comprise 6 holes which are symmetrically arranged on the inner wall of the pipeline and have different sizes relative to the pipeline, and the holes are used for comparing and evaluating the thinning severity when the serving pipeline is thinned in an area mode.
A further improvement of the invention is that the holes of different sizes and depths comprise
Artificially incised holes,
Artificially incised holes,
The manual carving of the holes is
Artificially incised holes,
Artificially carved hole and
and (5) manually carving the holes.
The invention has the further improvement that the 6 standard measurement steps are symmetrically arranged on the inner wall of the pipeline and used for calibrating and calibrating the instrument when the electromagnetic ultrasonic thickness measurement is carried out on the service pipeline.
A further improvement of the invention is that the 6 standard measurement steps include a pipe wall thickness 3/4T standard measurement step, a pipe wall thickness T/2 standard measurement step, and a pipe wall thickness T/4 standard measurement step.
The invention has at least the following beneficial technical effects:
the reference block for electromagnetic ultrasonic thickness measurement provided by the invention has the advantages that on the premise of meeting the use requirements, the test block is convenient to operate and wide in application range, the comprehensive measurement of the thickness of a pipeline from thin to thick is realized, and the calibration of an instrument, the verification of the detection capability of instrument equipment and the evaluation and analysis of pipeline safety risks can be realized more quickly, better and more intuitively.
Drawings
FIG. 1 is a front view of a reference block for electromagnetic ultrasonic thickness measurement;
FIG. 2 is a side view of a comparative block for electromagnetic ultrasonic thickness measurement;
fig. 3 is a partial cross-sectional view of a comparative block for electromagnetic ultrasonic thickness measurement.
Description of reference numerals:
1 is a notch groove with natural corrosion depth of 5% of the wall thickness (T) of the pipeline;
2, grooving with natural corrosion depth of 10% of the wall thickness (T) of the pipeline;
3, grooving with the natural corrosion depth of 20% of the wall thickness (T) of the pipeline;
4, grooving with natural corrosion depth of 30% of the wall thickness (T) of the pipeline;
5, a notch groove with the natural corrosion depth of 40 percent of the wall thickness (T) of the pipeline;
6 is a notch groove with the natural corrosion depth of 50 percent of the wall thickness (T) of the pipeline;
7 is
Manually carving the hole;
8 is
Manually carving the hole;
9 is
Manually carving the hole;
10 is
Manually carving the hole;
11 is
Manually carving the hole;
12 is
Manually carving the hole;
13 is the 3/4T standard measurement step for pipe wall thickness;
14 is the pipeline wall thickness T/2 standard measurement step;
15 is the pipeline wall thickness T/4 standard measurement step;
16 is 0 to 90 degree pipe with paint on the outer surface and 90 to 180 degree pipe without paint on the outer surface.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "inner", "outer" and "degree of angle" is generally described with reference to fig. 1 and 2, unless otherwise indicated.
In the invention, the size information of the reference test block is not fixed, and the reference work can be carried out during use, so that reasonable planning is needed.
The invention provides a contrast test block for electromagnetic ultrasonic thickness measurement, which comprises a test block body, natural corrosion notches, holes and standard measurement steps, wherein the natural corrosion notches, the holes and the standard measurement steps are formed in the test block body, and the natural corrosion notches, the holes and the standard measurement steps are uniformly distributed on the inner wall of a 45-degree position with paint in a pipeline and a 135-degree position without paint in the pipeline according to the natural corrosion notches with different depths at 12, the holes with different sizes and depths at 12 and the standard measurement steps at 6.
As shown in figure 1, the notches marked with the numbers 1 to 6 are all arranged on the inner wall of the pipeline, and natural corrosion notches with different depths are arranged relative to the wall thickness of the pipeline, so that the corrosion degree of the pipeline in service can be referenced and evaluated when corrosion exists.
As shown in FIG. 1, the holes marked with numbers 7 to 12 are all arranged on the inner wall of the pipeline, and have different aperture sizes relative to the pipeline, so that the comparison and the evaluation of the thinning severity can be carried out when the serving pipeline is thinned in area.
As shown in FIG. 1, the standard measurement steps marked with serial numbers 13, 14 and 15 are all arranged on the inner wall of the pipeline, and the instrument is calibrated when the electromagnetic ultrasonic thickness measurement is carried out on the service pipeline.
As shown in fig. 2, the labels R1, R2 are suitable for different sized pipes.
As shown in figures 1 to 3, the notch, the hole and the standard measuring step are respectively distributed at a 45-degree position with paint on the inner wall of the pipeline of the reference block and a 135-degree position without paint on the pipeline, so that the accuracy of the measuring result and the actual condition of the simulated service pipeline are more effective when electromagnetic ultrasonic thickness measurement is carried out.
After thickness measurement is finished, the areas with corrosion and thinning can be safely evaluated and analyzed through the reference test blocks, and the service pipeline conditions can be better known.
Claims (9)
1. The utility model provides an electromagnetism supersound is reference test block for thickness measurement which characterized in that includes the test block body to and set up a plurality of natural corrosion grooving, hole and standard measurement ladder on the test block body.
2. The reference block for electromagnetic ultrasonic thickness measurement according to claim 1, wherein the plurality of natural etching grooves, holes and standard measuring steps comprise natural etching grooves with 12 different depths, holes with 12 different sizes and depths and standard measuring steps with 6 positions.
3. The reference block for electromagnetic ultrasonic thickness measurement according to claim 2, wherein the natural etching grooves with different depths at 12, the holes with different sizes and depths at 12 and the standard measuring steps at 6 are uniformly distributed on the inner wall of the pipe at the 45-degree position with paint and the position without paint at 135 degrees.
4. The reference block for measuring thickness by electromagnetic ultrasonic waves of claim 2, wherein the natural etching grooves with different depths at 12 positions comprise 6 natural etching grooves which are symmetrically arranged on the inner wall of the pipeline and have different depths relative to the wall thickness of the pipeline, and are used for reference and evaluation of the degree of corrosion when the pipeline in service is corroded.
5. The reference block for electromagnetic ultrasonic thickness measurement according to claim 4, wherein the natural etching grooves of different depths include a groove having a natural etching depth of 5% of the wall thickness of the pipe, a groove having a natural etching depth of 10% of the wall thickness of the pipe, a groove having a natural etching depth of 20% of the wall thickness of the pipe, a groove having a natural etching depth of 30% of the wall thickness of the pipe, a groove having a natural etching depth of 40% of the wall thickness of the pipe, and a groove having a natural etching depth of 50% of the wall thickness of the pipe.
6. The reference block for electromagnetic ultrasonic thickness measurement according to claim 2, wherein the 12 holes with different sizes and depths comprise 6 holes symmetrically arranged on the inner wall of the pipeline and having different sizes relative to the pipeline, and the reference block is used for comparing and evaluating the thinning severity when the pipeline in service has an area thinning.
7. The reference block for electromagnetic ultrasonic thickness measurement according to claim 6, wherein the reference block comprises a base material and a plurality of conductive layersHoles of different sizes and depths including
Artificially incised holes,
Artificially incised holes,
The manual carving of the holes is
Artificially incised holes,
Artificially carved hole and
and (5) manually carving the holes.
8. The reference block for electromagnetic ultrasonic thickness measurement according to claim 2, wherein 6 standard measurement steps are symmetrically arranged on the inner wall of the pipeline for calibrating and calibrating the instrument when performing electromagnetic ultrasonic thickness measurement on the pipeline in service.
9. The reference block of claim 8, wherein the 6 standard measurement steps include a pipe wall thickness 3/4T standard measurement step, a pipe wall thickness T/2 standard measurement step, and a pipe wall thickness T/4 standard measurement step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210384757.XA CN114910025A (en) | 2022-04-13 | 2022-04-13 | Electromagnetic ultrasonic thickness measurement contrast test block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210384757.XA CN114910025A (en) | 2022-04-13 | 2022-04-13 | Electromagnetic ultrasonic thickness measurement contrast test block |
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| CN114910025A true CN114910025A (en) | 2022-08-16 |
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| CN202210384757.XA Pending CN114910025A (en) | 2022-04-13 | 2022-04-13 | Electromagnetic ultrasonic thickness measurement contrast test block |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2662466C1 (en) * | 2017-11-17 | 2018-07-26 | Публичное акционерное общество "Транснефть" (ПАО "Транснефть") | Underground pipeline section corrosive state evaluation method based on the corrosion surveys and in-pipe diagnostics data |
| CN110763760A (en) * | 2019-10-21 | 2020-02-07 | 中国石油天然气集团公司管材研究所 | Reference block for electromagnetic ultrasonic automatic detection of in-service oil pipe and design method |
| CN210514191U (en) * | 2019-08-20 | 2020-05-12 | 浙江省特种设备科学研究院 | Ultrasonic guided wave detection calibration reference test block |
| CN212514423U (en) * | 2020-06-23 | 2021-02-09 | 西安热工研究院有限公司 | Calibration/contrast test block for ultrasonic phased array small-angle longitudinal wave probe |
| CN213957614U (en) * | 2020-09-15 | 2021-08-13 | 上海金艺检测技术有限公司 | Curved surface step test block for ultrasonic thickness measurement of small-diameter pipe |
-
2022
- 2022-04-13 CN CN202210384757.XA patent/CN114910025A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2662466C1 (en) * | 2017-11-17 | 2018-07-26 | Публичное акционерное общество "Транснефть" (ПАО "Транснефть") | Underground pipeline section corrosive state evaluation method based on the corrosion surveys and in-pipe diagnostics data |
| CN210514191U (en) * | 2019-08-20 | 2020-05-12 | 浙江省特种设备科学研究院 | Ultrasonic guided wave detection calibration reference test block |
| CN110763760A (en) * | 2019-10-21 | 2020-02-07 | 中国石油天然气集团公司管材研究所 | Reference block for electromagnetic ultrasonic automatic detection of in-service oil pipe and design method |
| CN212514423U (en) * | 2020-06-23 | 2021-02-09 | 西安热工研究院有限公司 | Calibration/contrast test block for ultrasonic phased array small-angle longitudinal wave probe |
| CN213957614U (en) * | 2020-09-15 | 2021-08-13 | 上海金艺检测技术有限公司 | Curved surface step test block for ultrasonic thickness measurement of small-diameter pipe |
Non-Patent Citations (4)
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| 丁兵;金磊;: "超声相控阵检测用试块及其应用", 无损检测, no. 08 * |
| 富阳;马池营;孙云华;黄抚生;苗一;: "采用声速法对高温部件进行定点测厚监测", 无损检测, no. 04 * |
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