CN105738464A - Early-stage corrosion fatigue monitoring process suitable for offshore wind power steel structure base - Google Patents
Early-stage corrosion fatigue monitoring process suitable for offshore wind power steel structure base Download PDFInfo
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- CN105738464A CN105738464A CN201610094949.1A CN201610094949A CN105738464A CN 105738464 A CN105738464 A CN 105738464A CN 201610094949 A CN201610094949 A CN 201610094949A CN 105738464 A CN105738464 A CN 105738464A
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- defect
- angle welding
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- steel structure
- detection
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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
Abstract
The invention discloses an early-stage corrosion fatigue monitoring process suitable for an offshore wind power steel structure base. The early-stage corrosion fatigue monitoring process includes the step that a pulse electromagnetism method is adopted to detect cracks on the surface or near the surface of the wind power steel structure base with paint, and the cracks include fatigue, corrosion and technological surface cracks. It is not required to clear the surface of a detected member or conduct manual magnetization, a paint anti-corrosion system is not damaged, the corrosion and fatigue cracks can be effectively detected, and the effect of nondestructive testing of a steel structure in the offshore corrosion environment is safely and effectively achieved.
Description
Technical field
The present invention relates to the corrosion fatigue early monitoring technical field of offshore wind farm industry, particularly relate to a kind of corrosion fatigue early monitoring technique being suitable to offshore wind farm steel structure basis.
Background technology
Offshore wind power foundation is in the aggressive marine corrosive environment of sea water, salt fog, adds fan start and stop mode of operation frequently, and corrosion fatigue is inevitable, becomes the potential safety hazard running blower fan.To corrosion fatigue early detection, early discovery, early process, imperative.Traditional lossless detection method needs removal antifouling paint, surface finish smooth, just can detect the crackle including corrosion fatigue, be unsuitable for the offshore wind turbine foundation operational monitoring under corrosive environment；Traditional scaffold safety measure, is unsuitable for the region construction that basis, Intertidal zone is high, sea mud is sagging.
Accordingly, it is desirable to provide a kind of basic corrosion fatigue early monitoring technique of offshore wind farm steel structure that is suitable to is to solve the problems referred to above.
Summary of the invention
In order to solve this problem, the invention discloses a kind of corrosion fatigue early monitoring technique being suitable to offshore wind farm steel structure basis, it is a kind of employing pulse eletromagnetic method, the crackle of wind-powered electricity generation steel structure surface of base, nearly surface is carried out band paint detection, including fatigue, corrosion and manufacturability face crack.The method does not require to clear up tested component surface, does not need artificial magnetization.The detection weld seam sensitivity of butt welded seam face crack: the degree of depth >=0.5mm, length >=5mm, width >=0.01mm.A kind of corrosion fatigue early monitoring technique being suitable to offshore wind farm steel structure basis, described technique comprises the following steps:
(1) test plate (panel) is made: making detection test plate (panel) under the equal welded condition in many pile tubes steel structure basis, inside set simulated defect, then coated with the anticorrosive coat of same thickness, through contrast test, pulse eletromagnetic method can detect the simulated defect of corresponding size in test block；
(2) detection test plate (panel): the defect of well in advance in test plate (panel) is carried out non-destructive monitoring, the checking sensitivity of Non-Destructive Testing, calibration function and monitoring personnel's judgement level to defect by testing staff；
(3) make hanging basket: according to dam site investigation result, carry out pacifying and arrange the making of instrument；
(4) on-the-spot peace arranges preview and optimizing: testing staff and detection, peace arrange paraprofessional personnel to adopt the peace that hanging basket, cat ladder, seat belt, safety rope, life jacket combine to arrange mode, carry out detection simulation at the scene, guarantee the detection that each monitoring location carries out safely, has the quality assurance, according to analog case, hanging basket, cat ladder are rectified and improved, optimized；
(5) shape of a saddle angle welding is divided into angle welding top, bottom toe of weld, region, three, angle welding surface detect respectively；
(6), during detection toe of weld region, angle welding upper and lower, popping one's head in, major axis is consistent with toe of weld bearing of trend to be placed on toe of weld；
(7) instrument zero-bit is arranged；
(8) probe is moved along toe of weld；
(9) pop one's head in each scanning zone with previous scanning time have 10% overlapping, and cover whole angle welding surface；
(10) defect is judged: show signal according to instrument, it is judged that crack defect position, size；
(11) marking of defects: the defect black marking pen detected is carried out labelling, takes pictures；
(12), during detection angle welding surface, popping one's head in, major axis is consistent with weld seam bearing of trend to be placed on toe of weld；
(13) instrument zero-bit is arranged；
(14) probe sweeps angle welding surface along angle welding direction；
(15) pop one's head in each scanning zone with previous scanning time have 10% overlapping, and cover whole angle welding surface；
(16) defect is judged: show signal according to instrument, it is judged that crack defect position, size；
(17) marking of defects: the defect black marking pen detected is carried out labelling, takes pictures；
(18) examining report is gone out: the defective locations detected is carried out uniqueness description the detailed description of defective length, width, the degree of depth, the big figure of attached defective locations and closeup photograph by report.
Preferably: the present invention is that lossless detection method and the safety measure technique of corrosion-inhibiting coating are not destroyed in a kind of offshore wind farm steel structure basis, it solve offshore wind farm steel structure subcoat thickness, conventional lossless detection method scene coating polishing, to repair difficulty big, construction safety risk greatly and the problem such as detection sensitivity.A kind of corrosion fatigue early monitoring technique being suitable to offshore wind farm steel structure basis.
The invention have the benefit that
The present invention is a kind of by design that pulse eletromagnetic method Non-Destructive Testing and hanging basket, ladder are main safety measure technique, neither injury paint corrosion protection system, can effectively detect again corrosion fatigue crack, the safe and effective problem solving marine corrosive environment steel structure Non-Destructive Testing.
Introducing the concept of a series of reduced form in Summary, this will further describe in detailed description of the invention part.Present invention part is not meant to the key feature and the essential features that attempt to limit technical scheme required for protection, does not more mean that the protection domain attempting to determine technical scheme required for protection.
In conjunction with advantages and features of the invention described further below.
Accompanying drawing explanation
Nothing.
Detailed description of the invention
In the following description, a large amount of concrete details is given to provide more thorough understanding of the invention.It will be apparent, however, to one skilled in the art that the present invention can be carried out without these details one or more.In other example, in order to avoid obscuring with the present invention, technical characteristics more well known in the art are not described.
In order to thoroughly understand the present invention, detailed technique will be proposed in following description.Obviously, the execution of the present invention is not limited to the specific details that those skilled in the art has the knack of.Presently preferred embodiments of the present invention is described in detail as follows, but except these detailed descriptions, the present invention can also have other embodiments.
Hereinafter embodiments of the invention are described in detail.
A kind of corrosion fatigue early monitoring technique being suitable to offshore wind farm steel structure basis, described technique comprises the following steps:
(1) test plate (panel) is made: making detection test plate (panel) under the equal welded condition in many pile tubes steel structure basis, inside set simulated defect, then coated with the anticorrosive coat of same thickness, through contrast test, pulse eletromagnetic method can detect the simulated defect of corresponding size in test block；
(2) detection test plate (panel): the defect of well in advance in test plate (panel) is carried out non-destructive monitoring, the checking sensitivity of Non-Destructive Testing, calibration function and monitoring personnel's judgement level to defect by testing staff；
(3) make hanging basket: according to dam site investigation result, carry out pacifying and arrange the making of instrument；
(4) on-the-spot peace arranges preview and optimizing: testing staff and detection, peace arrange paraprofessional personnel to adopt the peace that hanging basket, cat ladder, seat belt, safety rope, life jacket combine to arrange mode, carry out detection simulation at the scene, guarantee the detection that each monitoring location carries out safely, has the quality assurance, according to analog case, hanging basket, cat ladder are rectified and improved, optimized；
(5) shape of a saddle angle welding is divided into angle welding top, bottom toe of weld, region, three, angle welding surface detect respectively；
(6), during detection toe of weld region, angle welding upper and lower, popping one's head in, major axis is consistent with toe of weld bearing of trend to be placed on toe of weld；
(7) instrument zero-bit is arranged；
(8) probe is moved along toe of weld；
(9) pop one's head in each scanning zone with previous scanning time have 10% overlapping, and cover whole angle welding surface；
(10) defect is judged: show signal according to instrument, it is judged that crack defect position, size；
(11) marking of defects: the defect black marking pen detected is carried out labelling, takes pictures；
(12), during detection angle welding surface, popping one's head in, major axis is consistent with weld seam bearing of trend to be placed on toe of weld；
(13) instrument zero-bit is arranged；
(14) probe sweeps angle welding surface along angle welding direction；
(15) pop one's head in each scanning zone with previous scanning time have 10% overlapping, and cover whole angle welding surface；
(16) defect is judged: show signal according to instrument, it is judged that crack defect position, size；
(17) marking of defects: the defect black marking pen detected is carried out labelling, takes pictures；
(18) examining report is gone out: the defective locations detected is carried out uniqueness description the detailed description of defective length, width, the degree of depth, the big figure of attached defective locations and closeup photograph by report.
Preferably: the present invention is a kind of employing pulse eletromagnetic method, the crackle of wind-powered electricity generation steel structure surface of base, nearly surface is carried out band paint detection, including fatigue, corrosion and manufacturability face crack.The method does not require to clear up tested component surface, does not need artificial magnetization.The detection weld seam sensitivity of butt welded seam face crack: the degree of depth >=0.5mm, length >=5mm, width >=0.01mm.
Preferably: the present invention is non-destructive monitoring method and the safety measure technique that corrosion-inhibiting coating is not destroyed on a kind of offshore wind farm steel structure basis, it solving offshore wind farm steel structure subcoat thickness, conventional lossless detection method scene coating polishing, repair that difficulty is big, construction safety risk big and the problem such as detection sensitivity, it is a kind of corrosion fatigue early monitoring technique being suitable to offshore wind farm steel structure basis.
Having the beneficial effect that of the present embodiment
The present invention is a kind of by design that pulse eletromagnetic method Non-Destructive Testing and hanging basket, ladder are main safety measure technique, neither injury paint corrosion protection system, can effectively detect again corrosion fatigue crack, the safe and effective problem solving marine corrosive environment steel structure Non-Destructive Testing.
The present invention is illustrated already by above-described embodiment, but it is to be understood that, above-described embodiment is only intended to citing and descriptive purpose, and is not intended to limit the invention in described scope of embodiments.In addition it will be appreciated by persons skilled in the art that and the invention is not limited in above-described embodiment, more kinds of variants and modifications can also be made according to the teachings of the present invention, within these variants and modifications all fall within present invention scope required for protection.Protection scope of the present invention is defined by the appended claims and equivalent scope thereof.
Claims (1)
1. the corrosion fatigue early monitoring technique being suitable to offshore wind farm steel structure basis, it is characterised in that described technique comprises the following steps:
(1) test plate (panel) is made: making detection test plate (panel) under the equal welded condition in many pile tubes steel structure basis, inside set simulated defect, then coated with the anticorrosive coat of same thickness, through contrast test, pulse eletromagnetic method can detect the simulated defect of corresponding size in test block；
(2) detection test plate (panel): the defect of well in advance in test plate (panel) is carried out non-destructive monitoring, the checking sensitivity of Non-Destructive Testing, calibration function and monitoring personnel's judgement level to defect by testing staff；
(3) make hanging basket: according to dam site investigation result, carry out pacifying and arrange the making of instrument；
(4) on-the-spot peace arranges preview and optimizing: testing staff and detection, peace arrange paraprofessional personnel to adopt the peace that hanging basket, cat ladder, seat belt, safety rope, life jacket combine to arrange mode, carry out detection simulation at the scene, guarantee the detection that each monitoring location carries out safely, has the quality assurance, according to analog case, hanging basket, cat ladder are rectified and improved, optimized；
(5) shape of a saddle angle welding is divided into angle welding top, bottom toe of weld, region, three, angle welding surface detect respectively；
(6), during detection toe of weld region, angle welding upper and lower, popping one's head in, major axis is consistent with toe of weld bearing of trend to be placed on toe of weld；
(7) instrument zero-bit is arranged；
(8) probe is moved along toe of weld；
(9) pop one's head in each scanning zone with previous scanning time have 10% overlapping, and cover whole angle welding surface；
(10) defect is judged: show signal according to instrument, it is judged that crack defect position, size；
(11) marking of defects: the defect black marking pen detected is carried out labelling, takes pictures；
(12), during detection angle welding surface, popping one's head in, major axis is consistent with weld seam bearing of trend to be placed on toe of weld；
(13) instrument zero-bit is arranged；
(14) probe sweeps angle welding surface along angle welding direction；
(15) pop one's head in each scanning zone with previous scanning time have 10% overlapping, and cover whole angle welding surface；
(16) defect is judged: show signal according to instrument, it is judged that crack defect position, size；
(17) marking of defects: the defect black marking pen detected is carried out labelling, takes pictures；
(18) examining report is gone out: the defective locations detected is carried out uniqueness description the detailed description of defective length, width, the degree of depth, the big figure of attached defective locations and closeup photograph by report.
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| CN201610094949.1A CN105738464A (en) | 2016-02-17 | 2016-02-17 | Early-stage corrosion fatigue monitoring process suitable for offshore wind power steel structure base |
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| CN201610094949.1A CN105738464A (en) | 2016-02-17 | 2016-02-17 | Early-stage corrosion fatigue monitoring process suitable for offshore wind power steel structure base |
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| CN105738464A true CN105738464A (en) | 2016-07-06 |
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| CN201610094949.1A Pending CN105738464A (en) | 2016-02-17 | 2016-02-17 | Early-stage corrosion fatigue monitoring process suitable for offshore wind power steel structure base |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624325A (en) * | 2019-02-28 | 2020-09-04 | 上海捷规建筑工程咨询有限公司 | Steel structure weld nondestructive testing method and system based on BIM |
| CN116297818A (en) * | 2023-05-17 | 2023-06-23 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1194376A (en) * | 1997-01-10 | 1998-09-30 | 新日本制铁株式会社 | Diagnostic method for steel structure fatigue life and iron and steel parts with life diagnostic function |
| JP4766472B1 (en) * | 2010-10-22 | 2011-09-07 | 国立大学法人 岡山大学 | Nondestructive inspection apparatus and nondestructive inspection method |
| CN202119748U (en) * | 2011-05-27 | 2012-01-18 | 河北科技大学 | Testing device for corrosion fatigue crack growth |
-
2016
- 2016-02-17 CN CN201610094949.1A patent/CN105738464A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1194376A (en) * | 1997-01-10 | 1998-09-30 | 新日本制铁株式会社 | Diagnostic method for steel structure fatigue life and iron and steel parts with life diagnostic function |
| JP4766472B1 (en) * | 2010-10-22 | 2011-09-07 | 国立大学法人 岡山大学 | Nondestructive inspection apparatus and nondestructive inspection method |
| CN202119748U (en) * | 2011-05-27 | 2012-01-18 | 河北科技大学 | Testing device for corrosion fatigue crack growth |
Non-Patent Citations (1)
| Title |
|---|
| 张钢 等: "浅谈海上风电钢构基础腐蚀疲劳及早期检测", 《风能》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624325A (en) * | 2019-02-28 | 2020-09-04 | 上海捷规建筑工程咨询有限公司 | Steel structure weld nondestructive testing method and system based on BIM |
| CN116297818A (en) * | 2023-05-17 | 2023-06-23 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
| CN116297818B (en) * | 2023-05-17 | 2023-08-04 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
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Application publication date: 20160706 |