RU2015153580A - METHOD FOR IN-TUBE DEFECTOSCOPY OF PIPELINES WALLS - Google Patents
METHOD FOR IN-TUBE DEFECTOSCOPY OF PIPELINES WALLS Download PDFInfo
- Publication number
- RU2015153580A RU2015153580A RU2015153580A RU2015153580A RU2015153580A RU 2015153580 A RU2015153580 A RU 2015153580A RU 2015153580 A RU2015153580 A RU 2015153580A RU 2015153580 A RU2015153580 A RU 2015153580A RU 2015153580 A RU2015153580 A RU 2015153580A
- Authority
- RU
- Russia
- Prior art keywords
- pipe wall
- pipeline
- electrodes
- frequency
- electrical impedance
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 10
- 230000007547 defect Effects 0.000 claims abstract 7
- 239000002344 surface layer Substances 0.000 claims abstract 5
- 238000007689 inspection Methods 0.000 claims abstract 4
- 230000008878 coupling Effects 0.000 claims abstract 2
- 238000010168 coupling process Methods 0.000 claims abstract 2
- 238000005859 coupling reaction Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims abstract 2
- 238000005259 measurement Methods 0.000 claims abstract 2
- 239000000523 sample Substances 0.000 claims abstract 2
- 238000001514 detection method Methods 0.000 claims 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
- G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
1. Способ внутритрубной дефектоскопии стенок трубопроводов, заключающийся в измерении величины электрического тока, распределенного в стенке трубы, электродами, расположенными кольцевыми рядами, аксиальным перемещением по трубопроводу, и выявлении зоны дефекта в стенке трубопровода путем определения отклонений распределенного в стенке трубы электрического тока от заданных значений с привязкой к текущим координатам, затем по сформированной в системе управления команде электроды возвращают к координатам участка трубопровода с выявленным отклонением и проводят повторную дефектоскопию с последующей обработкой результатов измерений и регистрацией информации о состоянии структуры материала стенки трубопровода, отличающийся тем, что дефекты в стенке трубы выявляют отклонением частотной характеристики электрического импеданса приповерхностного слоя стенки трубы от заданных значений, измеренных зондирующим сигналом в диапазоне частот, задаваемом в зависимости от глубин зондирования стенки и межэлектродного расстояния, с последующей обработкой отклонений частотной характеристики электрического импеданса с привязкой к текущим координатам трубопровода.2. Способ по п. 1, отличающийся тем, что частотную характеристику электрического импеданса приповерхностного слоя стенки трубы измеряют бесконтактной емкостной связью электродов с внутренней поверхностью трубопровода.3. Способ по п. 1, отличающийся тем, что электроды перемещают по трубопроводу как непрерывно, так и дискретно с интервалом, равным межэлектродному расстоянию.4. Способ по п. 1, отличающийся тем, что дефект в стенке трубы выявляют сравнением частотн1. The method of in-pipe inspection of the walls of pipelines, which consists in measuring the magnitude of the electric current distributed in the pipe wall, by electrodes located in circular rows, axial movement through the pipeline, and identifying the defect zone in the pipe wall by determining the deviations of the electric current distributed in the pipe wall from the specified values with reference to the current coordinates, then, according to the command formed in the control system, the electrodes are returned to the coordinates of the pipeline section with deviation and re-inspection, followed by processing the measurement results and recording information about the state of the structure of the pipe wall material, characterized in that defects in the pipe wall are detected by the deviation of the frequency characteristic of the electrical impedance of the surface layer of the pipe wall from the set values measured by the probe signal in the frequency range, set depending on the depth of sounding of the wall and interelectrode distance, with subsequent processing of frequency deviations oh characteristics of the electrical impedance with reference to the current coordinates of the pipeline. 2. A method according to claim 1, characterized in that the frequency response of the electrical impedance of the surface layer of the pipe wall is measured by non-contact capacitive coupling of the electrodes with the inner surface of the pipeline. A method according to claim 1, characterized in that the electrodes are moved through the pipeline both continuously and discretely with an interval equal to the interelectrode distance. The method according to claim 1, characterized in that the defect in the pipe wall is detected by comparing the frequency
Claims (5)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2015153580A RU2622355C2 (en) | 2015-12-14 | 2015-12-14 | Method of intra-tube defectoscopy of pipeline walls |
| PCT/RU2016/000856 WO2017105281A2 (en) | 2015-12-14 | 2016-12-07 | Inline pipeline wall inspection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2015153580A RU2622355C2 (en) | 2015-12-14 | 2015-12-14 | Method of intra-tube defectoscopy of pipeline walls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2015153580A true RU2015153580A (en) | 2016-06-10 |
| RU2622355C2 RU2622355C2 (en) | 2017-06-14 |
Family
ID=56115013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2015153580A RU2622355C2 (en) | 2015-12-14 | 2015-12-14 | Method of intra-tube defectoscopy of pipeline walls |
Country Status (2)
| Country | Link |
|---|---|
| RU (1) | RU2622355C2 (en) |
| WO (1) | WO2017105281A2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402233B (en) * | 2017-07-12 | 2024-03-05 | 温州职业技术学院 | Photoelectric detection alarm device for submarine pipeline |
| CN108773598B (en) * | 2018-08-13 | 2020-06-09 | 西安石油大学 | Online monitoring device and method for leakage of buried oil tank |
| RU2702408C1 (en) * | 2019-01-09 | 2019-10-08 | Анатолий Николаевич Наянзин | Method and device for scanning flaw detection of internal protective-insulating coatings of pipelines |
| RU2718711C1 (en) * | 2019-07-01 | 2020-04-14 | Леонтий Рустемович Григорьян | Method of diagnosing insulating coating defects of pipelines |
| RU2718136C1 (en) * | 2019-10-08 | 2020-03-30 | Общество с ограниченной ответственностью "Газпромнефть Научно-Технический Центр" (ООО "Газпромнефть НТЦ") | Method and device for monitoring of technical condition of internal protective-insulating coatings of operating field pipelines |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2109206C1 (en) * | 1996-04-11 | 1998-04-20 | Научно-производственное объединение машиностроения | Method of inter-tube flaw detection and flaw detector- projectile for realization of this method |
| FR2903187B1 (en) * | 2006-06-30 | 2008-09-26 | Setval Sarl | NON-DESTRUCTIVE CONTROL, ESPECIALLY FOR TUBES DURING MANUFACTURING OR IN THE FINAL STATE |
| RU2451867C2 (en) * | 2010-06-17 | 2012-05-27 | Открытое акционерное общество "Газпром" | In-tube control apparatus and method for moving it in gas main with preset uniform velocity |
-
2015
- 2015-12-14 RU RU2015153580A patent/RU2622355C2/en not_active IP Right Cessation
-
2016
- 2016-12-07 WO PCT/RU2016/000856 patent/WO2017105281A2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017105281A2 (en) | 2017-06-22 |
| RU2622355C2 (en) | 2017-06-14 |
| WO2017105281A3 (en) | 2017-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20181215 |