CN205426857U - Nondestructive test structure for tidal range district sea pipe - Google Patents
Nondestructive test structure for tidal range district sea pipe Download PDFInfo
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- CN205426857U CN205426857U CN201620109456.6U CN201620109456U CN205426857U CN 205426857 U CN205426857 U CN 205426857U CN 201620109456 U CN201620109456 U CN 201620109456U CN 205426857 U CN205426857 U CN 205426857U
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- sea pipe
- pillar
- sea
- pipe
- ferrum cobalt
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Abstract
The utility model discloses a nondestructive test structure for tidal range district sea pipe, this nondestructive test structure for tidal range district sea pipe is at least including sea pipe (3), these sea pipe (3) lie in the riser position department that lands the end or go out to make a start, outer wall in these sea pipe (3) has cup jointed pillar (1), its characterized in that: sea pipe (3) and pillar (1) is the magnetism sea pipe after magnetizing, set up the space that axial length is an on pillar (1), be provided with indisputable cobalt area (2) of length for an in above -mentioned space, surface coating in the aforesaid indisputable cobalt area (2) has epoxy glue, paste in the surface of sea pipe (3) in iron cobalt area (2), the circumference size in space is not less than the half the of pillar (1) girth. Through the technical solution, the utility model has the characteristics of detection efficiency is high, and the accuracy is good.
Description
Technical field
This utility model relates to sea pipe detection equipment technical field, particularly relates to the Non-Destructive Testing structure that sea, a kind of Tidal zone is effective.
Background technology
Development along with offshore oil, the prolongation of offshore platform sea pipe Years Of Service, sea pipe is chronically exposed to high salt fog, moist, in the corrosive environment that tide etc. are severe, sea pipe occurs the risk of corrosion to be gradually increased, particularly sea pipe logs in and goes out to make a start Tidal zone standpipe section, corrosive environment is the most severe, simultaneously standpipe section log in end with the presence of pillar (pillar be logged on platform or the protection leaving platform sea pipe standpipe section and support pipeline, it is fixed on platform jacket, sea pipe is through pillar landing platform, sea, Tidal zone pipe standpipe is coated with completely), ultrasonic guided wave detecting difficulty is higher, the change of ultrasonic propagation media environment, the existence of pillar hinders contacting of probe and extra large pipe, pillar can not be completely cut through, the only pipeline of circumference 1/2 can cut off, the improvement test of ultrasonic guided wave detecting method is We conducted for this problem.
Utility model content
The technical problems to be solved in the utility model is: provide the Non-Destructive Testing structure that sea, a kind of Tidal zone is effective；This effective Non-Destructive Testing structure in sea, Tidal zone aims to solve the problem that obstruct and the impact in practical operation of the ultrasonic propagation media variations of pillar in pipe (standpipe section) ultrasonic guided wave detecting of sea, Tidal zone.
This utility model is adopted the technical scheme that by solving technical problem present in known technology:
The Non-Destructive Testing structure that sea, a kind of Tidal zone is effective, at least includes sea pipe (3)；This sea pipe (3) is positioned at and logs in end or go out the standpipe position made a start；Outer wall in this sea pipe (3) is socketed with pillar (1)；Described sea pipe (3) and pillar (1) are the magnetic sea pipe after magnetization；Described pillar (1) offers the space that axial length is a；Ferrum cobalt band (2) of a length of a it is provided with in above-mentioned space；Outer surface above-mentioned ferrum cobalt band (2) has epoxide-resin glue；Described ferrum cobalt band (2) is pasted on the outer surface in sea pipe (3)；The circumferential size in described space is not less than the half of pillar (1) girth.
Further: described a=200mm.
Further: on described ferrum cobalt band (2), be wound with the cable of banded structure；Described cable is connected with ultrasonic wave detecting system by coil adapter.
This utility model has the advantage that with good effect:
By using technique scheme, owing to this utility model offers the space that axial length is a on pillar；The ferrum cobalt band of a length of a it is provided with in above-mentioned space；Outer surface at above-mentioned ferrum cobalt band has epoxide-resin glue；Described ferrum cobalt band is pasted on the outer surface of sea pipe；The circumferential size in described space is not less than the half of pillar girth；Therefore when carrying out Ultrasonic Nondestructive, overcome the obstruct of pillar and ultrasonic propagation media variations well and affect problem in practical operation, so the efficiency height of detection (passes through experiment test, within general 2 minutes, can test), simultaneously because there is no the obstruction of pillar, and the circumferential size in space is not less than the half of pillar girth, the accuracy therefore detected is higher；Owing to cable is banded structure, therefore it is wound around and compares fastening, ensure that transmission and the reception of ultrasonic signal well.
Accompanying drawing illustrates:
Fig. 1 is Non-Destructive Testing structural representation in this utility model preferred embodiment；
Fig. 2 is the first experimental result picture of this utility model preferred embodiment, and wherein ferrum cobalt band 2 is wound in the surrounding of sea pipe；
Fig. 3 is the second experimental result picture of this utility model preferred embodiment, and wherein ferrum cobalt band 2 is wound in 1/2 girth of sea pipe；
Fig. 4 is the 3rd experimental result picture of this utility model preferred embodiment, and wherein ferrum cobalt band 2 is wound in 1/4 girth of sea pipe；
Fig. 5 is for be immersed in the water steel pipe, and ferrum cobalt band 2 is wound in experimental result picture during 1/2 girth of sea pipe.
Wherein: 1, pillar；2, ferrum cobalt band；3, Hai Guan；
Detailed description of the invention
For utility model content of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example, and it be as follows to coordinate accompanying drawing to describe in detail:
Refer to Fig. 1, the Non-Destructive Testing structure that sea, a kind of Tidal zone is effective, be socketed with the extra large pipe 3 of pillar 1 including outer wall；This sea pipe 3 is positioned at and logs in end or go out the standpipe position made a start；Described sea pipe 3 and pillar 1 are the magnetic sea pipe after magnetization；Described pillar 1 offers the space that axial length is a；The ferrum cobalt band 2 of a length of a it is provided with in above-mentioned space；Outer surface at above-mentioned ferrum cobalt band 2 has epoxide-resin glue；Described ferrum cobalt band 2 is pasted on the outer surface of sea pipe 3；The circumferential size in described space is not less than the half of pillar 1 girth.In the preferred embodiment: a=200mm.
On the basis of above preferred embodiment, described ferrum cobalt band 2 is wound with the cable of banded structure；Described cable is connected with ultrasonic wave detecting system by coil adapter.
Ultrasonic Nondestructive (ultrasonic guided wave detecting) is to send a branch of duration pulse of ultrasonic energy by coil probe, this pulse is full of whole circumferencial direction and whole pipe thickness is distally propagated, when running into the metal defect that inner and outer walls of pipeline corrodes or defect causes, owing to cross-section of pipeline (thickness) there occurs change, having flaw indication at defect to return, the reflected signal detected by same coil by instrument can find out inside and outside defective locations, size and the corrosion condition of pipeline.
Supersonic guide-wave can be divided into magnetostrictive ultrasonic guided wave system (South West USA academy SWRI) and piezoelectric ceramic ultrasonic guided wave system (Britain institute of welding TWI and guided wave company of Britain PI) according to the difference of pumping signal producing method.
The Guided waves system that this preferred embodiment is used is that Beijing special equipment detects graduate MsS supersonic guide-wave system, the Cleaning Principle of this system is magnetostrictive effect, excitation energy is propagated along the construction machine elastic wave of the structure-borne of limited shape, the boundary shape limited along component and is retrained by component border, guide.So-called magnetostriction be ferromagnetic material (magnetic material) due to the change of magnetized state, its size changes in all directions.Magnetostriction materials are under the action of a magnetic field, its length changes, can be subjected to displacement and do work or can occur repeatedly to uphold and shorten at action of alternating magnetic field, thus produce vibration or sound wave, electromagnetic energy (or electromagnetic information) can be converted into mechanical energy or acoustic energy (or mechanical displacement information or acoustic intelligence) by this material, mechanical energy (or mechanical displacement and information) can also be converted into electromagnetic energy (or electromagnetic information) on the contrary.
The processing method of the Non-Destructive Testing structure that sea, above-mentioned Tidal zone is effective, comprises the steps:
Step 101, on pillar 1 cutting gaps；And utilize steel brush to be polished by the cutting end face of pillar 1；
Step 102, magnetic conductive device is utilized sea pipe 3 and pillar 1 to be magnetized；
Step 103, selection size are equal to the ferrum cobalt band 2 in space, at the outer surface epoxide-resin glue of ferrum cobalt band 2；
Step 104, ferrum cobalt band 2 is pasted onto sea pipe 3 on；
Step 105, in order to make ferrum cobalt band 2 and sea the more preferable Rhizoma Nelumbinis of pipe 3 close, be wrapped on ferrum cobalt band 2 with rubber strip, after time T, by rubber strip dismounting.
Further: described time T is 10 minutes.
Further: described epoxide-resin glue is five minutes quick epoxide-resin glues.
The detection method of the Non-Destructive Testing structure that sea, above-mentioned Tidal zone is effective, comprises the steps:
Step 201, ultrasonic wave detecting system launch ultrasonic pulse signal by cable；This ultrasonic pulse signal is by entering ferrum cobalt band 2 after air, ultrasonic pulse signal is passed on the pillar 1 of ferrum cobalt band 2 both sides and the extra large pipe 3 of ferrum cobalt band 2 inwall by ferrum cobalt band 2 subsequently；
During step 202, ultrasonic pulse signal transmit in pillar 1 and sea pipe 3, if run into pillar 1 or sea pipe 3 generation corrosion or breakage, reflex then can occur, the ultrasonic pulse signal reflected is transferred to cable by ferrum cobalt band 2, and the ultrasonic pulse signal that cable will reflect back into subsequently is sent to ultrasonic wave detecting system；If pillar 1 and sea pipe 3 all do not occur corrosion and breakage failure, then ultrasonic pulse signal transmits to pillar 1 and the port of sea pipe 3 always, and midway will not occur above-mentioned reflex；
The ultrasonic pulse signal received is analyzed processing by step 203, ultrasonic wave detecting system.
In order to preferably illustrate described preferred embodiment, when this utility model is wound around 1/2 circumference and whole circumferencial direction by experimental verification ferrum cobalt band (coil probe), testing result has no significant effect, the most under water in the range of 3-4 rice, sea pipe outer tube wall contact medium change, sea pipe testing result is also had no significant effect by duration pulse of ultrasonic energy decay, and experiment conclusion sees below experiment, refers to Fig. 2 to Fig. 5；Wherein: Fig. 2 a, Fig. 3 a, Fig. 4 a, Fig. 5 a are shown that the functional relationship of reflected value and distance；Fig. 2 b, Fig. 3 b, Fig. 4 b, Fig. 5 b are shown that the functional relationship of amplitude and distance.
Checking test:
This experiment uses Guided waves system to be that Beijing special equipment detects graduate MsS supersonic guide-wave system.By choosing same steel pipe, same position is pasted the ferrum cobalt band (all-round length, 1/2 girth, 1/4 girth) of different length and is carried out Guided waves experiment in air being immersed in the water respectively, the feasibility that checking program platform at sea is implemented, test procedure is as follows:
1) matched group experiment:
Choose a long steel pipe of 6m, think in steel pipe fixed position and make known defect, choose at end face 40cm as Guided waves point, pipeline is polished, carries out respectively testing 1/2 after removing steel tube surface corrosion-inhibiting coating.
Experiment one: paste upper complete ferrum cobalt band, 1/2 ferrum cobalt band, 1/4 ferrum cobalt band the most respectively, carries out Guided waves test and collects Guided waves signal and as control experiment.Experimental result below figure:
By in figure Guided waves signal graph it can be seen that Guided waves result and defect one_to_one corresponding set in advance.
By figure Guided waves signal graph it can be seen that signal wave crest position is unchanged, signal strength weakening.
By Guided waves signal graph it can be seen that signal wave crest position is unchanged, signal intensity weakens again.
Experiment two: steel pipe one end is immersed in the water 5 meters, detection position is exposed on the water surface, pastes 1/2 ferrum cobalt band, carries out Guided waves, collects Guided waves signal and as control experiment.
By Guided waves signal graph it can be seen that signal wave crest position is unchanged, signal strength weakening, compare 1/2 patch ferrum cobalt band detection without substantially weakening；
2) experiment conclusion:
By 1 three groups of Experimental Comparisons of experiment results, it can be seen that paste 1/2 ferrum cobalt band and paste complete ferrum cobalt strip length to signal collection without impact, but signal intensity having an impact (ferrum cobalt band is the shortest, and signal intensity is the most weak), clutter is the most.The relative position in ferrum cobalt band sticking veneer and defect face on signal collection without impact.
Contrasted with testing result in experiment 1 by experiment 2, it can be seen that steel pipe is immersed in the water detection signal collection without impact, but signal intensity has an impact, but impact is little (Tidal zone short distance detection).
Above embodiment of the present utility model is described in detail, but described content has been only preferred embodiment of the present utility model, it is impossible to be considered for limiting practical range of the present utility model.All impartial changes made according to this utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (3)
1. the Non-Destructive Testing structure that sea, Tidal zone is effective, at least includes sea pipe (3)；This sea pipe (3) is positioned at and logs in end or go out the standpipe position made a start；Outer wall in this sea pipe (3) is socketed with pillar (1)；It is characterized in that: described sea pipe (3) and pillar (1) are the magnetic sea pipe after magnetization；Described pillar (1) offers the space that axial length is a；Ferrum cobalt band (2) of a length of a it is provided with in above-mentioned space；Outer surface above-mentioned ferrum cobalt band (2) has epoxide-resin glue；Described ferrum cobalt band (2) is pasted on the outer surface in sea pipe (3)；The circumferential size in described space is not less than the half of pillar (1) girth.
The Non-Destructive Testing structure that sea, Tidal zone the most according to claim 1 is effective, it is characterised in that: described a=200mm.
The Non-Destructive Testing structure that sea, Tidal zone the most according to claim 2 is effective, it is characterised in that: on described ferrum cobalt band (2), it is wound with the cable of banded structure；Described cable is connected with ultrasonic wave detecting system by coil adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620109456.6U CN205426857U (en) | 2016-02-03 | 2016-02-03 | Nondestructive test structure for tidal range district sea pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620109456.6U CN205426857U (en) | 2016-02-03 | 2016-02-03 | Nondestructive test structure for tidal range district sea pipe |
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| CN201620109456.6U Expired - Fee Related CN205426857U (en) | 2016-02-03 | 2016-02-03 | Nondestructive test structure for tidal range district sea pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675717A (en) * | 2016-02-03 | 2016-06-15 | 天津亿利科能源科技发展股份有限公司 | Nondestructive testing structure for submarine pipe in tidal range zone, processing method and testing method |
| CN109283175A (en) * | 2018-08-03 | 2019-01-29 | 张起 | A kind of corrugated paper box dampproof self-test packet and its fill method |
-
2016
- 2016-02-03 CN CN201620109456.6U patent/CN205426857U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675717A (en) * | 2016-02-03 | 2016-06-15 | 天津亿利科能源科技发展股份有限公司 | Nondestructive testing structure for submarine pipe in tidal range zone, processing method and testing method |
| CN109283175A (en) * | 2018-08-03 | 2019-01-29 | 张起 | A kind of corrugated paper box dampproof self-test packet and its fill method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20210203 |