CN110308209A - It is used for the Sensitivity Calibration sample pipe of far-field eddy harmony pulse detection heat exchanger tube harness defects simultaneously - Google Patents
It is used for the Sensitivity Calibration sample pipe of far-field eddy harmony pulse detection heat exchanger tube harness defects simultaneously Download PDFInfo
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- CN110308209A CN110308209A CN201910686968.7A CN201910686968A CN110308209A CN 110308209 A CN110308209 A CN 110308209A CN 201910686968 A CN201910686968 A CN 201910686968A CN 110308209 A CN110308209 A CN 110308209A
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- 230000007547 defect Effects 0.000 title claims abstract description 68
- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 230000035945 sensitivity Effects 0.000 title claims abstract description 21
- 230000002950 deficient Effects 0.000 claims abstract description 7
- 239000002243 precursor Substances 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000009659 non-destructive testing Methods 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 9
- 239000004020 conductor Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000414 obstructive effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The present invention relates to a kind of Sensitivity Calibration sample pipes for being used for far-field eddy harmony pulse detection heat exchanger tube harness defects simultaneously, belong to pipeline non-destructive testing field.The radial through-hole one and radial through-hole two of the both ends difference acoustic emission detection artificial defect of cylindrical tube, the aperture of the through-hole one is less than the aperture of through-hole two, the pitch of holes of through-hole one and through-hole two is not less than 1m, between the through-hole one and through-hole two of cylindrical tube, it is successively far-field eddy defect round bottom hole, far-field eddy defective hole, the circumferentially narrow groove of far-field eddy defect, far-field eddy defect circumferential direction wide groove, far-field eddy defect circumferential recess；Advantage is structure novel, Far Field Swirl Detecting Technology harmony impulse detection technique is combined, the defect for meeting precursor in far field, meeting ping testing requirements again is produced on the same Sensitivity Calibration sample pipe, it can be applied to precursor in far field harmony pulse detection simultaneously, be suitble to multi-pipeline rapid survey.
Description
Technical field
The invention belongs to pipeline non-destructive testing fields, more particularly to one kind to be used for far-field eddy harmony pulse detection iron simultaneously
The Sensitivity Calibration sample pipe of magnetic heat exchange device tube bank defect.
Background technique
Heat exchanger tube is widely used in industries such as petroleum, chemical industry, electric power.The industries such as petroleum, chemical industry, electric power
Heat exchanger tube frequently leak, cause to stop production, not only business economic caused to lose, in addition threaten field personnel life
Safety.It is pipeline transportation system since durings manufacture, installation, military service etc., heat exchanger tube can generate various defects
System brings security risk, and pipeline frequently leaks, and leads to unplanned halt production, not only causes enterprise's huge economic losses or even prestige
Coerce the life security of field personnel.Therefore, technology or equipment fast and effeciently can be carried out non-destructive testing to military service pipeline,
It is paid close attention to by people.
It is at present that Far Field Swirl Detecting Technology and ping are examined to heat exchanger tube beam trace routine lossless detection method
Survey technology；Wherein:
(1) ping detects:
When needing ping to detect, probe right side is inserted into tested test tube, presses upper " ping detection " key of popping one's head in,
Ping detection waveform schematic diagram, high-frequency horn issue a string of driving pulse waves during pipe transmmision, when meeting with obstruction or
Defect can generate reflection echo, and audio sensor obtains the echo-signal, and analysis system is sent to after frequency-selective filtering is handled and is shown
Waveform is shown, penetrability defect such as runs through hole and the crackle of tube wall, echo-signal phase be it is first negative after just: obstructive defect, packet
Pit is included, tamper, pipe deformation etc., echo-signal phase is first just to bear afterwards.
(2) precursor in far field:
EDDY CURRENT is built upon a kind of lossless detection method on electromagnetic induction principle basis, it is suitable for conduction material
Material.As soon as being placed among alternating magnetic field when a piece conductor, in the conductor with the presence of induced current, that is, vortex is generated.Due to conductor
The variation of itself various factors (such as conductivity, magnetic conductivity, shape, size and defect), will lead to the variation of vortex, utilizes this
Kind phenomenon determines conductor nature, the detection method of state, referred to as EDDY CURRENT.
Testing principle: the principle of remote field eddy current technology work is the variation for the ac magnetic field that detection sensor issues.Electricity
Magnetic field acts on metal pipe line by sensor sending, and in the place enhancing for having metal loss, electromagnetic field is received sensor and connects
It receives, is handled after analog-digital converter is converted by digital processing unit.Detection data is stored in detector.
Precursor in far field advantage:
1, Non-contact nondestructive detects.Far-field eddy does not need to completely attach to tube wall.
2, because of the small and flexible design of outer diameter of detector, precursor in far field device can be used for the pipeline of internal diameter variation
With sharply curved pipeline (such as threeway).
3, precursor in far field device can detect that the stress on the outside of pipeline concentrates (such as dent or rock impact).
4, precursor in far field device and pipeline are " soft contacts ", can prevent damage pipeline inner wall in this way.
5, the variation of precursor in far field detection electromagnetic field phase and amplitude improves the accuracy of detection depth and to pipe
The susceptibility of line wall thickness change.
6, the two-way design of detector can allow detector to be scored from same nozzle and take ball.
7, precursor in far field device bearing capacity is strong, and the sensor of carrying is hardly damaged.
By above-mentioned analysis, precursor in far field is high-efficient；Detect inspection of the speed fastly with 100%；To corrosion type defect
Sensitivity is higher.But far-field eddy is relatively low for blocking type defect in pipe and perforation type flaw detection sensitivity.In addition, far field
Eddy-current technique directly apply to heat exchanger tube detection there are still some problems, for example, it cannot be distinguished pipe outer wall defect and
Internal flaw can not detect plugging and tube sheet existing blind area nearby.And ping detection technique is for blocking type defect in pipe
It is relatively high with perforation type flaw detection sensitivity, it has detecting distance long and detection coverage area is big, detection speed is fast, not by
The advantages that tubing influences, it can overcome the disadvantages that deficiency existing for far-field eddy, but it is insensitive to inside corrosion, is unable to detection pipe
Road external corrosion,
According to relevant criterion, precursor in far field harmony pulse detection heat exchanger tube is detection defect type, sensitive
Degree is all different, so such as combining two kinds of technologies, need to design on a Sensitivity Calibration sample pipe and meet far field whirlpool
The defect of the requirement of stream detection harmony pulse detection.
Summary of the invention
The present invention provides a kind of while being used for the sensitive of far-field eddy harmony pulse detection heat exchanger tube harness defects
Scale random sample pipe, to solve to examine currently without meeting precursor in far field and ping simultaneously on a Sensitivity Calibration sample pipe
Survey requires the problem of defect.
The technical solution adopted by the present invention is that: the radial direction of the both ends difference acoustic emission detection artificial defect of cylindrical tube
Through-hole one and radial through-hole two, the aperture of the through-hole one are less than the aperture of through-hole two, and the pitch of holes of through-hole one and through-hole two is not small
In 1m, left end of the through-hole one apart from cylindrical tube is not less than 0.3m, and right end of the through-hole two apart from cylindrical tube is not less than
0.3m；It is successively far-field eddy defect round bottom hole between the through-hole one and through-hole two of cylindrical tube, far-field eddy defect is logical
Hole, the circumferentially narrow groove of far-field eddy defect, far-field eddy defect circumferential direction wide groove, far-field eddy defect circumferential recess；
1~2mm of wall thickness of the cylindrical tube；
When the internal diameter of the cylindrical tube is less than or equal to 25mm, the aperture of through-hole one is 1mm, and the aperture of through-hole two is
2mm；
When the internal diameter of the cylindrical tube is greater than 25mm, is less than or equal to 50mm, the aperture of through-hole one is 2mm, through-hole
Two aperture is 3mm；
The far-field eddy defect round bottom hole depth is the 50% of wall thickness, and top opening diameter is 10mm；
The diameter of the far-field eddy defective hole is 11.25 times of wall thickness；
The groove depth of the circumferentially narrow groove of far-field eddy defect is the 20% of wall thickness, groove width 3mm, a length of tube body of circumferential slot
The half of perimeter；
The groove depth of the far-field eddy defect circumferential direction wide groove is the 20% of wall thickness, and groove width is greater than or equal to the 2 of bore
Times, the half of a length of tube body perimeter of circumferential slot；
The groove depth of the far-field eddy defect circumferential recess is the 60% of wall thickness, groove width 15mm, a length of tube body of circumferential slot
The 25% of perimeter.
It is an advantage of the invention that structure novel, Far Field Swirl Detecting Technology harmony impulse detection technique is combined,
The defect for meeting precursor in far field, meeting ping testing requirements again is produced on the same Sensitivity Calibration sample pipe, is made
It can be applied to precursor in far field harmony pulse detection simultaneously, be suitble to multi-pipeline rapid survey, can be widely applied to petroleum, change
The Tube Sheet of Heat Exchanger beam trace in the fields such as work, electric power, steel mill quickly detects.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is schematic cross-sectional view of the invention.
Specific embodiment
Referring to Fig. 1 and Fig. 2, it should be noted that the attached drawing is that can understand to state thin-walled of the invention, elongated, aperture etc.
Structure, and the schematic technique of painting is used to dependency structure, rather than actual product ratio, above-mentioned schematic illustration mode will not be to these
The understanding of invention has an impact.
The radial through-hole 1 and radial through-hole 23 of the both ends difference acoustic emission detection artificial defect of cylindrical tube 1,
The aperture of the through-hole 1 is less than the aperture of through-hole 23, and the pitch of holes of through-hole 1 and through-hole 23 is not less than 1m, one 2 distance of through-hole
The left end of cylindrical tube 1 is not less than 0.3m, and right end of the through-hole 23 apart from cylindrical tube 1 is not less than 0.3m；In cylindrical tube
It is successively far-field eddy defect round bottom hole 4, far-field eddy defective hole 5, far field whirlpool between the through-hole 1 and through-hole 23 of body 1
Flow the circumferentially narrow groove 6 of defect, far-field eddy defect circumferential direction wide groove 7, far-field eddy defect circumferential recess 8；
1~2mm of wall thickness of the cylindrical tube 1；
When the internal diameter of the cylindrical tube 1 is less than or equal to 25mm, the aperture of through-hole 1 is 1mm, the hole of through-hole 23
Diameter is 2mm；
When the internal diameter of the cylindrical tube 1 is greater than 25mm, is less than or equal to 50mm, the aperture of through-hole 1 is 2mm, is led to
The aperture in hole 23 is 3mm；
4 depth of far-field eddy defect round bottom hole is the 50% of wall thickness, and top opening diameter is 10mm；
The diameter of the far-field eddy defective hole 5 is 11.25 times of wall thickness；
The groove depth of the circumferentially narrow groove 6 of far-field eddy defect is the 20% of wall thickness, groove width 3mm, a length of pipe of circumferential slot
The half of 1 perimeter of body；
The groove depth of the far-field eddy defect circumferential direction wide groove 7 is the 20% of wall thickness, and groove width is greater than or equal to the 2 of bore
Times, the half of a length of 1 perimeter of tube body of circumferential slot；
The groove depth of the far-field eddy defect circumferential recess 8 is the 60% of wall thickness, groove width 15mm, a length of tube body of circumferential slot
The 25% of 1 perimeter.
Working principle:
Using ping detecting instrument on sample pipe acoustic emission detection artificial defect through-hole 1 and through-hole 23 carry out it is scarce
Detection is fallen into, and adjustment equipment parameter makes ping detection device can detecte out 23 defect of through-hole 1 and through-hole, and sensitive
Degree is higher, and saves relevant parameter；
Using precursor in far field instrument to the far-field eddy defect round bottom hole 4 on sample pipe, far-field eddy defective hole 5,
The circumferentially narrow groove 6 of far-field eddy defect, far-field eddy defect circumferential direction wide groove 7, far-field eddy defect circumferential recess 8 carry out defect
Detection, and adjustment equipment parameter makes precursor in far field equipment can detecte out associated disadvantages, and sensitivity is higher, and saves
Relevant parameter.
In work later, the relevant parameter of two kinds of equipment, detection scene test tube to be checked are used.
Claims (9)
1. a kind of Sensitivity Calibration sample pipe for being used for far-field eddy harmony pulse detection heat exchanger tube harness defects simultaneously,
It is characterized in that: the radial through-hole one and radial through-hole two of the both ends difference acoustic emission detection artificial defect of cylindrical tube, it should
The aperture of through-hole one is less than the aperture of through-hole two, and the pitch of holes of through-hole one and through-hole two is not less than 1m, and through-hole one is apart from cylinder
The left end of tube body is not less than 0.3m, and right end of the through-hole two apart from cylindrical tube is not less than 0.3m；In the through-hole of cylindrical tube
It is successively far-field eddy defect round bottom hole between one and through-hole two, far-field eddy defective hole, far-field eddy defect is circumferentially narrow recessed
Slot, far-field eddy defect circumferential direction wide groove, far-field eddy defect circumferential recess.
2. according to claim 1 a kind of simultaneously for far-field eddy harmony pulse detection heat exchanger tube harness defects
Sensitivity Calibration sample pipe, it is characterised in that: 1~2mm of wall thickness of the cylindrical tube.
3. according to claim 1 a kind of simultaneously for far-field eddy harmony pulse detection heat exchanger tube harness defects
Sensitivity Calibration sample pipe, it is characterised in that: the internal diameter of the cylindrical tube be less than or equal to 25mm when, the aperture of through-hole one
For 1mm, the aperture of through-hole two is 2mm.
4. according to claim 1 a kind of simultaneously for far-field eddy harmony pulse detection heat exchanger tube harness defects
Sensitivity Calibration sample pipe, it is characterised in that: the internal diameter of the cylindrical tube be greater than 25mm, be less than or equal to 50mm when, lead to
The aperture in hole one is 2mm, and the aperture of through-hole two is 3mm.
5. according to claim 1 a kind of simultaneously for far-field eddy harmony pulse detection heat exchanger tube harness defects
Sensitivity Calibration sample pipe, it is characterised in that: the far-field eddy defect round bottom hole depth is the 50% of wall thickness, and top opening diameter is
10mm。
6. according to claim 1 a kind of simultaneously for far-field eddy harmony pulse detection heat exchanger tube harness defects
Sensitivity Calibration sample pipe, it is characterised in that: the diameter of the far-field eddy defective hole is 11.25 times of wall thickness.
7. according to claim 1 a kind of simultaneously for far-field eddy harmony pulse detection heat exchanger tube harness defects
Sensitivity Calibration sample pipe, it is characterised in that: the groove depth of the circumferentially narrow groove of far-field eddy defect be wall thickness 20%, groove width
For 3mm, the half of a length of tube body perimeter of circumferential slot.
8. according to claim 1 a kind of simultaneously for far-field eddy harmony pulse detection heat exchanger tube harness defects
Sensitivity Calibration sample pipe, it is characterised in that: the groove depth of the far-field eddy defect circumferential direction wide groove be wall thickness 20%, groove width
More than or equal to 2 times of bore, the half of a length of tube body perimeter of circumferential slot.
9. according to claim 1 a kind of simultaneously for far-field eddy harmony pulse detection heat exchanger tube harness defects
Sensitivity Calibration sample pipe, it is characterised in that: the groove depth of the far-field eddy defect circumferential recess is the 60% of wall thickness, and groove width is
15mm, the 25% of a length of tube body perimeter of circumferential slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910686968.7A CN110308209A (en) | 2019-07-26 | 2019-07-26 | It is used for the Sensitivity Calibration sample pipe of far-field eddy harmony pulse detection heat exchanger tube harness defects simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910686968.7A CN110308209A (en) | 2019-07-26 | 2019-07-26 | It is used for the Sensitivity Calibration sample pipe of far-field eddy harmony pulse detection heat exchanger tube harness defects simultaneously |
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| CN110308209A true CN110308209A (en) | 2019-10-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106596712A (en) * | 2016-11-22 | 2017-04-26 | 西安交通大学 | Frequency band selection type pulsed eddy current nondestructive testing method based on defect depth |
| CN106908522A (en) * | 2017-02-16 | 2017-06-30 | 山东省特种设备检验研究院泰安分院 | The ultrasonic guided wave detecting of defect of pipeline axial width demarcates sample pipe and scaling method |
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| CN107505388A (en) * | 2017-07-25 | 2017-12-22 | 西安交通大学 | A kind of flexible magnetic saturation Pulsed eddy current testing probe and detection method |
| CN109507282A (en) * | 2018-11-13 | 2019-03-22 | 西安交通大学 | A kind of pipe surface defect inspection method of electromagnetic acoustic monitoring sensor installation point |
| CN210465347U (en) * | 2019-07-26 | 2020-05-05 | 吉林省电力科学研究院有限公司 | Sensitivity calibration sample tube simultaneously used for detecting defects of ferromagnetic heat exchanger tube bundle by far-field eddy current and acoustic pulse |
-
2019
- 2019-07-26 CN CN201910686968.7A patent/CN110308209A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6359434B1 (en) * | 1998-09-30 | 2002-03-19 | Hydroscope Cananda Inc. | Method and system for determining pipeline circumferential and non-circumferential wall loss defects in a water pipeline |
| CN101354380A (en) * | 2007-07-23 | 2009-01-28 | 北京航空航天大学 | Vortex flow and electromagnetic ultrasonic combined type nondestructive detection method |
| CN101458229A (en) * | 2008-12-31 | 2009-06-17 | 东北轻合金有限责任公司 | Phi 20mm-phi 38mm aluminum alloy thin walled pipe eddy current inspection method |
| JP2015055526A (en) * | 2013-09-11 | 2015-03-23 | 三菱重工業株式会社 | Inspection method of micro crack of inner surface of pipe and inspection device of micro crack of inner surface of pipe |
| US20170336360A1 (en) * | 2016-03-14 | 2017-11-23 | Board Of Trustees Of Michigan State University | Rotating Current Excitation with Array Magnetic Sensors Nondestructive Testing Probe For Tube Inspection |
| CN106596712A (en) * | 2016-11-22 | 2017-04-26 | 西安交通大学 | Frequency band selection type pulsed eddy current nondestructive testing method based on defect depth |
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