CN214374529U - Be used for magnetostriction supersound guided wave detectivity calibration test block - Google Patents
Be used for magnetostriction supersound guided wave detectivity calibration test block Download PDFInfo
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- CN214374529U CN214374529U CN202120371862.0U CN202120371862U CN214374529U CN 214374529 U CN214374529 U CN 214374529U CN 202120371862 U CN202120371862 U CN 202120371862U CN 214374529 U CN214374529 U CN 214374529U
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- 238000012360 testing method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 230000035945 sensitivity Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 230000007547 defect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005297 material degradation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a be used for magnetostrictive ultrasonic guided wave detectivity calibration test block, the pipeline comprises a pipe, the outer wall of pipeline is equipped with a plurality of ring grooving, the ring grooving is followed the axial direction of pipeline evenly arranges, the degree of depth of ring grooving is followed the axial direction crescent of pipeline is adjacent the degree of depth difference between the ring grooving is the same, and this device simple structure can use with the check out test set cooperation of difference.
Description
Technical Field
The utility model relates to a calibration test block, in particular to be used for magnetostriction supersound guided wave detectivity calibration test block.
Background
Pressure pipes may experience various forms of damage such as corrosion, fatigue, creep, material degradation, etc. in service, with corrosion damage being the most common. Pressure vessels and pressure pipelines used in the fields of oil refining, chemical engineering, underground urban pipe networks and the like have disastrous accidents caused by corrosion damage due to strong corrosivity of contacted media, influence of soil environment and humidity of buried pipelines, and often accompanied by severe working conditions such as high temperature, high pressure, abrasion and the like. Therefore, the online detection and long-term state monitoring of the corrosion of the reinforced pressure pipeline have great significance for guaranteeing continuous production and preventing safety accidents. The corrosion of the pressure pipeline can be locally detected by using a conventional nondestructive detection technology, and the corrosion position and the corrosion degree can be determined. However, conventional non-destructive testing has many limitations for corrosion testing of pressure pipes, such as: only partial sampling inspection can be carried out, and 100% coverage detection cannot be achieved; the overhead pipelines with the heat-insulating layers or the anticorrosive layers need to be completely stripped and scaffolds need to be built; the buried and crossing pipelines need to be excavated, the detection cost is high, and the danger is high; the high temperature pipeline and the pipeline with the heat tracing pipeline cannot be detected; only detection can be carried out, and the corrosion change of the pipeline cannot be monitored for a long time.
The magnetostrictive ultrasonic guided wave has three modes of longitudinal wave, torsional wave, bending wave and the like in the pipeline, and because only the sound velocity of the torsional wave is unique and constant in the frequency dispersion curve of the pipeline and does not change along with the change of the frequency of the guided wave, the torsional wave is only transmitted in a solid, and the liquid transmitted in the pipeline has no influence on the transmission characteristic, the magnetostrictive ultrasonic guided wave technology adopts a torsional wave mode in the pipeline detection. Although the propagation characteristics of the ultrasonic guided wave are complex, as long as the guided wave mode and frequency are correctly selected and the propagation direction is controlled, the guided wave can rapidly propagate along the pipeline from the position of a sensor of the guided wave, and the 100% pipeline volume scanning detection of the pipeline with the length of hundreds of feet is instantly completed. The establishment of the calibration of the detection sensitivity of the magnetostrictive ultrasonic guided wave system becomes a very critical problem, and a distance amplitude curve needs to be drawn by using the reflected echoes of the artificial defects on the reference block, and then the subsequent calibration work can be carried out.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned current problem, the to-be-solved technical problem of the utility model lies in simple structure, can cooperate one kind with the check out test set of difference and use to be used for magnetostriction supersound guided wave detectivity calibration test block.
The utility model provides a be used for magnetostrictive ultrasonic guided wave detectivity calibration test block, the pipeline comprises a pipe, the outer wall of pipeline is equipped with a plurality of ring grooving, the ring grooving is followed the axial direction of pipeline is evenly arranged, the degree of depth of ring grooving is followed the axial direction crescent of pipeline is adjacent the degree of depth difference between the ring grooving is the same.
Preferably, the thickness of the pipe is greater than 1 mm.
Preferably, the length of the conduit is greater than 18 m.
Preferably, the outer diameter of the pipe is larger than 8mm, and the outer diameter of the pipe is smaller than 1100 mm.
Preferably, the pipeline is a seamless steel pipe.
The beneficial effects of the utility model reside in that:
the utility model discloses a be used for magnetostriction supersound guided wave detectivity calibration test block, before the use of this device, need utilize the reflection echo of the artificial defect on the reference block to draw apart from the wave amplitude curve, again will draw good apart from wave amplitude curve data and keep in the magnetostriction guided wave detector, then use this device and the cooperation of magnetostriction guided wave detector and calibrate before beginning calibration work at every turn, if the defect that shows on the magnetostriction guided wave detector can complete the demonstration the different degree of depth on the pipeline the cross-sectional loss defect of ring grooving then explains magnetostriction guided wave detector is normal, can use magnetostriction guided wave detector to carry out the actual testing operation to pipeline under pressure, and this device can cooperate the magnetostriction guided wave detector use of different models, and simple structure facilitates the use moreover.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
Fig. 1 is the utility model relates to a perspective view of an overall structure for magnetostrictive ultrasonic guided wave detectivity calibration test block.
In the figure, 1 is a pipe, and 2 is a circular cutting groove.
Detailed Description
In order to better understand the technical content of the present invention, the following embodiments are provided, and the present invention is further described with reference to the accompanying drawings.
Referring to fig. 1, the utility model provides a be used for magnetostrictive ultrasonic guided wave detection sensitivity calibration test block, including pipeline 1, the outer wall of pipeline 1 is equipped with a plurality of ring grooving 2, ring grooving 2 is along the axial direction of pipeline 1 evenly arranges, the degree of depth of ring grooving 2 increases gradually along the axial direction of pipeline 1, adjacent the degree of depth difference between ring grooving 2 is the same, before the use of this device, need utilize the reflection echo of the artificial defect on the comparison test block to draw the distance amplitude curve, again will draw good distance amplitude curve data and keep in the magnetostrictive guided wave detector, then use this device with the cooperation of magnetostrictive guided wave detector and calibrate before beginning calibration work each time, if the defect that shows on the magnetostrictive guided wave detector can the complete demonstration the different degree of depth the cross-section loss defect of ring grooving 2 on pipeline 1, the magnetostrictive guide wave detector is normal, actual detection operation can be carried out on the pressure pipeline by using the magnetostrictive guide wave detector, and the magnetostrictive guide wave detector can be matched with magnetostrictive guide wave detectors of different models for use, and is simple in structure and convenient to use.
Specifically, the thickness of the pipeline 1 is larger than 1 mm.
In particular, the length of the pipe 1 is greater than 18 m.
Specifically, the outer diameter of the pipeline 1 is larger than 8mm, and the outer diameter of the pipeline 1 is smaller than 1100 mm.
Specifically, the pipeline 1 is made of a seamless steel pipe, and the condition of the pressure pipeline under the actual condition can be simulated by the device through the seamless steel pipe, so that the calibration reliability of the device is ensured.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The calibration test block for the detection sensitivity of the magnetostrictive ultrasonic guided wave comprises a pipeline, wherein a plurality of annular cutting grooves are formed in the outer wall of the pipeline and are uniformly arranged along the axial direction of the pipeline, the depth of each annular cutting groove is gradually increased along the axial direction of the pipeline, and the depth difference between every two adjacent annular cutting grooves is the same.
2. The calibration block for the detection sensitivity of the magnetostrictive ultrasonic guided wave according to claim 1, wherein the thickness of the pipeline is more than 1 mm.
3. The calibration block for the detection sensitivity of the magnetostrictive ultrasonic guided wave according to claim 2, wherein the length of the pipeline is more than 18 m.
4. The calibration block for the detection sensitivity of the magnetostrictive ultrasonic guided wave according to claim 3, wherein the outer diameter of the pipeline is more than 8mm, and the outer diameter of the pipeline is less than 1100 mm.
5. The calibration block for the detection sensitivity of the magnetostrictive ultrasonic guided wave according to claim 1, wherein the pipeline is a seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120371862.0U CN214374529U (en) | 2021-02-10 | 2021-02-10 | Be used for magnetostriction supersound guided wave detectivity calibration test block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120371862.0U CN214374529U (en) | 2021-02-10 | 2021-02-10 | Be used for magnetostriction supersound guided wave detectivity calibration test block |
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| Publication Number | Publication Date |
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| CN214374529U true CN214374529U (en) | 2021-10-08 |
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| CN202120371862.0U Active CN214374529U (en) | 2021-02-10 | 2021-02-10 | Be used for magnetostriction supersound guided wave detectivity calibration test block |
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2021
- 2021-02-10 CN CN202120371862.0U patent/CN214374529U/en active Active
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