CN101419191B - Portable drill rod magnetic memory detector - Google Patents
Portable drill rod magnetic memory detector Download PDFInfo
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- CN101419191B CN101419191B CN2008102389682A CN200810238968A CN101419191B CN 101419191 B CN101419191 B CN 101419191B CN 2008102389682 A CN2008102389682 A CN 2008102389682A CN 200810238968 A CN200810238968 A CN 200810238968A CN 101419191 B CN101419191 B CN 101419191B
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Abstract
The invention relates to a portable magnetic memory detector for a drill rod, which is applied to nondestructive examination for a petroleum drill rod. The detector body is fixed with a magnetic memory sensor; a detector stander is provided with a right-angled steel plate of which the shape is of a right angle square; and the middle of the right-angled steel plate is fixed with a diaphragm plate on which a bearing and a roller are fixed. Two ends of the right-angled steel plate are fixed a motor box and an electric motor respectively. The outside of the right-angled steel plate is fixed with a split detecting ring. The magnetic memory sensor is fixed on the inner wall of the split detecting ring. A stroke sensor is arranged on the roller. The inner wall of the split detecting ring is provided with 16 magnetic memory sensors evenly. The portable magnetic memory detector has the advantages that the magnetic memory detector detects residual magnetic field intensity of the drill rod, provides a fire-new nondestructive examination method for the petroleum drill rod, provides data for evaluating surface damage of the drill rod, and plays a quite important role in reducing drilling accidents and ensuring drilling production safety.
Description
Technical field
The present invention relates to a kind of oil drill rocker the cannot-harm-detection device, be mainly used in and detect damage of the oil drill rocker body of rod and unrelieved stress, for the grading of drilling rod provides foundation.
Background technology
Drilling rod is the important component part of oil drill string, is mainly used in transferring power and and conveying drilling fluid.In drilling process, drilling rod bears tensile, compressive, bending, turns round the additional dynamic load that impact shock causes in load and the drilling process, and its outside surface then is subjected to concentrated wear and dielectric corrosion.Oil drill rocker is a rigidity cylinder hollow rods, owing to be in the rugged surroundings of high temperature pressure corrosion soaked with liquid and complicated alterante stress in use, drilling rod can be because reasons such as the broken ring of wearing and tearing, fatigue damage and corrosion lose its basic function gradually.Drilling rod through being on active service often has defectives generations such as tired and corrosion cracking, as can not in time finding, will cause piercing through, inefficacy such as fracture, causes serious drilling failure.In the deep-well in oil field, Tarim Basin, ultra deep well drilling engineering, particularly outstanding by the tired drilling failure that causes of drilling rod, drilling well production is caused heavy economic losses.
Usually use lossless detection method in the petroleum drilling engineering field and detect the drilling rod defective, thereby realization, is avoided drilling well work is caused heavy economic losses to reduce the generation of drilling rod failure accidents to the grading of oil drill rocker.Therefore, in time detecting the fatigue damage of military service drilling rod delicately and its state of the art is made accurate evaluation, prevent that effectively drilling rod from destroying the drilling failure that causes, is the key technical problem of being badly in need of solution during the Tarim Basin oil drilling is produced.
It is a kind of new Dynamic Non-Destruction Measurement that develops rapidly in the world in the later stage nineties 20th century that the magnetic memory detects, its ultimate principle is: the carrying ferrimagnet is subjected to the excitation of terrestrial magnetic field, can have the magnetic domain tissue orientation of magnetostrictive effect at stress and distortion concentrated area, and produce irreversible reorientation; This irreversible magnetic state still can be kept after operating load is eliminated and be relevant with maximum stress, its characteristic feature is, zone in defective and stress concentration, metal magnetic conducting rate minimum, the surface then forms maximum stray field, the tangential component maximum in this magnetic field, normal component then symbol change and have a null value.Therefore, by the variation in scanning detection ferromagnetic piece surface leakage magnetic field, just can determine microdefect or the stress concentrated position and the feature of workpiece, thereby the earlier damage of workpiece is made clearly judgement.
The existing nondestructive testing technique (as ultrasonic, eddy current, magnetic etc.) that is used for the drilling rod detection, can only detect the defective that has occurred, can't go up from the root (being microdefect or area of stress concentration) of drilling rod generation fatigue damage and make early stage evaluation to its state of the art, prevention is in the fatigue breakdown that meets accident of labour drilling rod.The magnetic memory sensor then has significant superiority in magnetic memory context of detection, and this method need not special magnetizing equipment simultaneously, and it is little influenced by Lift-off effect, condition of work requires low, swift to operate, simple, convenient, sensitivity, repeatable accuracy and reliability height are more suitable for using at the scene.Therefore, the appearance of magnetic memory sensor product is used for the drilling rod fatigue detecting with the magnetic accumulating method and the state of the art evaluation has bright development prospect.
The fatigue damage that magnetic memory detecting method has been used for load-carrying construction spares such as undercarriage, aircraft girder screw, the turbine disk, compressor blade, turbo blade, turbine blade, oil and gas pipes and pressure vessel detects and various defects detection, wherein is no lack of to carry out the example that drill rod magnetic memory detection research provides a reference.However, the achievement in research that yet there are no the drill rod magnetic memory detection is delivered.
Summary of the invention
The purpose of this invention is to provide a kind of portable drill rod magnetic memory detector, adopt highly sensitive magnetic memory sensor, according to the on-the-spot characteristics that detect of oil drill rocker, make portable drill rod magnetic memory detector, thereby provide brand-new detection means with microscopic damage for oil drill rocker stress is concentrated.Effectively prevent to improve the drilling rod utilization benefit, reduce the drilling well production cost because of the tired drilling failure that causes of drilling rod.Overcome conventional nondestructiving detecting means and can not satisfy the present situation that oil drill rocker stress is concentrated and microscopic damage effectively detects,
Technical solution of the present invention is: portable drill rod magnetic memory detector comprises apparatus subject, detects control box, telepilot and computing machine.Detect control box and connect apparatus subject by cable, be the apparatus subject power supply, be fixed with wireless receiver on the apparatus subject, telepilot is by wireless receiver control instrument main body, make apparatus subject move and detect along tested drilling rod body, be fixed with the magnetic memory sensor on the apparatus subject, the magnetic memory sensor detects drilling rod volume defect and recording detection data; The magnetic memory sensor connects computing machine by signal wire, and computing machine is finished initialization data collection and analysis detecting data.The use of this split-type structural design and remote control equipment reduces apparatus subject weight, has improved the portability of instrument.
Described apparatus subject comprises instrument frame, motor box, opposite opened detection ring, stroke sensor, roller and bearing.The instrument frame has the right angle steel plate of two try square shapes at least, two right angle steel plate center fixed diaphragm plate is arranged, and is fixed with bearing on the diaphragm plate, and roller is installed on the bearing, and the direction of roller center line is identical with the direction on a limit of right angle steel plate.When roller rolls along the drilling rod body, can drive apparatus subject and slide along the drilling rod body.Be fixed with motor box respectively at steel plate two ends, right angle.The motor box internal fixation has motor, and motor output end is connected with roller.Motor rotates and can drive the roller rotation, can drive apparatus subject and slide along the drilling rod body.Be fixed with the opposite opened detection ring in the outside of right angle steel plate.The opposite opened detection ring is made up of two semicircular ring, and one of them semicircular ring is fixed on the outside of right angle steel plate, and another semicircular ring is connected with the semicircular ring that is fixed on the right angle steel plate by bearing pin, and two semicircular ring can be opened and close up.Drilling rod is entered in the opposite opened detection ring; After closing up, two semicircular ring become an annulus.Described magnetic memory sensor is fixed on the opposite opened detection ring inwall.When detecting drilling rod, rotate when electronic function drives roller, when mobile, the magnetic memory sensor in the opposite opened detection ring detects apparatus subject on drilling rod.
When detecting drilling rod,, away from motor terminal a stroke sensor is installed at a roller for the distance that can the register instrument main body on drilling rod, moves.Stroke sensor connects computing machine by signal wire, and the distance that apparatus subject moves on drilling rod sends computing machine to.When the drilling rod position at apparatus subject place occurs that stress is concentrated and during microscopic damage, calculates the stress of this position of function record drilling rod and concentrate and the microscopic damage signal.
For the ease of carrying, be convenient to operation, on described right angle steel plate, be fixed with handle, the position of handle is in right angle steel plate two arm intersections.
In order to improve monitoring accuracy and, on the inwall of described opposite opened detection ring, evenly to be fixed with 16 magnetic memory sensors to the drilling-rod external wall comprehensive monitoring.
Described magnetic memory detector also comprises the MMC storage card, and the MMC storage card directly inserts in the draw-in groove on the collector, can store and detect data.
The invention has the beneficial effects as follows: portable drill rod magnetic memory detector, employing magnetic memory sensor detects the residual magnetic field intensity of drilling rod,
Adopt highly sensitive magnetic memory sensor as detecting components and parts, have the characteristics of high sensitivity, low Lift-off effect; The outside of employing right angle steel plate is fixed with the version of opposite opened detection ring, be convenient to distribute detection ring and drive motor; Utilize the roller of motor-driven annular knurl to rotate, the realization detecting instrument is creeped on drilling rod automatically; The mode that adopts annular 16 channel parallels to detect realizes full week of drilling rod is measured; The control of employing remote control mode, convenient easy-to-use; Adopt the storage card storage to detect data, reduced detection part quantity, improved detection efficiency, be convenient to rig-site utilization.Detect microscopic damage district and the stress concentration point and the earthquake intensity thereof of the drilling rod body of rod by non-contacting mode, provide brand-new lossless detection method for oil drill rocker detects.Provide data for estimating the damage of drilling rod surface volume, can be on the other hand and detect that the drilling rod internal stress is concentrated and fatigue damage provides means.Can realize damage of oil drill rocker interior microscopic and the concentrated noncontact Non-Destructive Testing of stress, thereby provide foundation for the drilling rod classification.
Portable drill rod magnetic memory detector is for the Non-Destructive Testing of drilling rod provides important means.Have broad application prospects in the drilling engineering field, for reducing drilling failure, ensureing that the drilling well production safety has important effect, can produce great economic benefit.
Description of drawings
Fig. 1 is a portable drill rod magnetic memory detector three-dimensional structure synoptic diagram of the present invention.
Among the figure, 1. instrument frame, 2. handle, 3. motor box, 4. opposite opened detection ring, 5. stroke sensor, 6. roller, 7. bearing.
Embodiment
Following conjunction with figs. and specific embodiment are described in further detail portable drill rod magnetic memory detector embodiment of the present invention.The present embodiment portable drill rod magnetic memory detector is applicable to that the drill pipe diameter of detection is 127mm.
Consult Fig. 1.The general structure of portable drill rod magnetic memory detector is made up of apparatus subject, detection control box, telepilot and notebook four parts.Wherein, detecting control box powers to apparatus subject by cable.Be fixed with wireless receiver on the apparatus subject, telepilot is by the motion and the detection action of wireless receiver control instrument main body, apparatus subject realize along tested drilling rod body move, detection and record, notebook is responsible for initialization collector and analysis detecting data.Fixing 16 on the apparatus subject respectively has the magnetic memory sensor, and the magnetic memory sensor connects computing machine by signal wire.Apparatus subject is the core of a complete set of instrument, also is innovative point of the present invention place.
Consult Fig. 2.The apparatus subject of portable drill rod magnetic memory detector comprises instrument frame 1, motor box 3, opposite opened detection ring 4, stroke sensor 5, roller 6 and bearing 7.Instrument frame 1 has the right angle steel plate of three try square shapes, places side by side discharging at three blocks of right angle steel plates, in per two right angle steel plate center fixed four diaphragm plates is arranged, and per two diaphragm plates are one group.Be fixed with a bearing 7 on each diaphragm plate, 6 on roller is installed on the bearing 7, and the direction of roller 6 center lines is identical with the direction on a limit of right angle steel plate.Two groups of rollers arranged side by side 6 are promptly arranged, every group of two rollers 6, total four rolling 6 between three blocks of right angle steel plates.The outside surface of roller 6 has annular knurl.Away from motor terminal a stroke sensor is installed at a roller 6.
Be fixed with a motor box 3 respectively at steel plate two ends, right angle.Be fixed with a motor in the motor box 3 respectively, motor output end is connected with roller 6.Motor rotates and can drive roller 6 rotations, can drive apparatus subject and slide along the drilling rod body.Be fixed with opposite opened detection ring 4 in the outside of right angle steel plate.Opposite opened detection ring 4 is made up of two semicircular ring, and one of them semicircular ring is fixed on the outside of right angle steel plate, and another semicircular ring is connected with the semicircular ring that is fixed on the right angle steel plate by bearing pin (hinge), and two semicircular ring can be opened or close up.Can make external diameter after two semicircular ring are opened is that the drilling rod of 127mm enters in the opposite opened detection ring 4; After closing up, two semicircular ring become an annulus.Described magnetic memory sensor is fixed on opposite opened detection ring 4 inwalls.At even 16 the magnetic memory sensors that distribute of the circumferential equal angles in the inwall upper edge of circular opposite opened detection ring 4, be used to detect drilling rod defective and stress and concentrate.The model of magnetic memory sensor is the MMM-1 type sensor of Chinese Petroleum Univ.'s development.When detecting drilling rod, rotate when electronic function drives roller 6, when mobile, the magnetic memory sensors in the opposite opened detection ring 4 detect apparatus subject on drilling rod.On instrument frame 1, be fixed with a stroke sensor 5.Stroke sensor 5 connects computing machine by signal wire, and the model of stroke sensor 5 is OSS-02 type scramblers of Guangzhou Trapaceae company.
Be fixed with handle 2 on the right angle steel plate, the position of handle 2 is in right angle steel plate two arm intersections.
Described magnetic memory detector also comprises the MMC storage card, and the MMC storage card directly inserts in the draw-in groove on the collector, can store and detect data.The model of MMC storage card is the TRANSCEND mmc card.
During detection, the gait of march of apparatus subject on drilling rod is 0.12m/s, 16 of magnetic memory sensors (acquisition channel), and frequency acquisition 0 ~ 14400HZ is adjustable, range of signal ± 10V.
This instrument portable drill rod magnetic memory detector can detect the microdefect district and the stress concentration point of the oil drill rocker body of rod, and its concrete using method is as follows:
At first apparatus subject is placed on the drilling rod to be measured, and entangle drilling rod with splitting detection ring 4, thereby make body of rod cylindrical and this detection ring inner circle in concentric position and keep certain interval, use a teleswitch and start collector image data and motor rotation, this moment apparatus subject can creep on the drilling rod and record data to the MMC storage card, stop motor with telepilot when treating that apparatus subject moves to the top of drilling rod.Detect other drilling rod duplicate detection processes, collector of every switching can write down a file on the MMC storage card.After detect finishing, take off the MMC storage card, the microdefect district of the drilling rod that can have been detected with computer processing data and the position and the earthquake intensity of stress concentration point, thus provide foundation for drilling rod evaluation classification.
Claims (6)
1. portable drill rod magnetic memory detector, comprise apparatus subject, detect control box, telepilot and computing machine, detect control box and connect apparatus subject by cable, be fixed with wireless receiver on the apparatus subject, be fixed with the magnetic memory sensor on the apparatus subject, the magnetic memory sensor connects computing machine by signal wire, it is characterized in that: described apparatus subject comprises instrument frame (1), motor box (3), opposite opened detection ring (4), stroke sensor (5), roller (6) and bearing (7), instrument frame (1) has the right angle steel plate of two try square shapes at least, two right angle steel plate center fixed diaphragm plate is arranged, be fixed with bearing (7) on the diaphragm plate, roller (6) is installed on the bearing (7), and the direction of roller (6) center line is identical with the direction on a limit of right angle steel plate; Be fixed with motor box (3) respectively at steel plate two ends, right angle, motor box (3) internal fixation has motor, motor output end is connected with roller (6), be fixed with opposite opened detection ring (4) in the outside of right angle steel plate, opposite opened detection ring (4) is made up of two semicircular ring, one of them semicircular ring is fixed on the outside of right angle steel plate, another semicircular ring is connected with the semicircular ring that is fixed on the right angle steel plate by bearing pin, two semicircular ring can be opened and close up, become an annulus after two semicircular ring are closed up, described magnetic memory sensor is fixed on opposite opened detection ring (4) inwall.
2. portable drill rod magnetic memory detector according to claim 1 is characterized in that: a roller (6) away from motor terminal a stroke sensor is installed, stroke sensor (5) connects computing machine by signal wire.
3. portable drill rod magnetic memory detector according to claim 1 is characterized in that: be fixed with handle (2) on described right angle steel plate, the position of handle (2) is in right angle steel plate two arm intersections.
4. portable drill rod magnetic memory detector according to claim 1 is characterized in that: evenly be fixed with 16 magnetic memory sensors on the inwall of described opposite opened detection ring (4).
5. according to claim 1,2,3 or 4 described portable drill rod magnetic memory detectors, it is characterized in that: the outside surface of described roller (6) has annular knurl.
6. according to claim 1,2,3 or 4 described portable drill rod magnetic memory detectors, it is characterized in that: the quantity of described right angle steel plate is three.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102389682A CN101419191B (en) | 2008-12-08 | 2008-12-08 | Portable drill rod magnetic memory detector |
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|---|---|---|---|
| CN2008102389682A CN101419191B (en) | 2008-12-08 | 2008-12-08 | Portable drill rod magnetic memory detector |
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| CN101419191A CN101419191A (en) | 2009-04-29 |
| CN101419191B true CN101419191B (en) | 2011-06-22 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551360B (en) * | 2009-04-22 | 2011-07-27 | 中国海洋石油总公司 | A magnetic memory detection device of oil drill rod micro-crack |
| CN102759564B (en) * | 2012-07-31 | 2015-10-14 | 中国石油天然气集团公司 | A kind of variable diameter pipe external magnetic memory detection device |
| CN103474197A (en) * | 2013-09-26 | 2013-12-25 | 昆山佑翔电子科技有限公司 | Magnet ring |
| CN104502462B (en) * | 2014-12-26 | 2017-06-16 | 四川曜诚无损检测技术有限公司 | For drill pipe thickening area and the ultrasonic wave on-line checking defect-detecting equipment of friction welding seam |
| CN106526097B (en) * | 2017-01-12 | 2019-04-02 | 长江大学 | A kind of automatic folding type drilling rod damage detection apparatus |
| CN109100417B (en) * | 2018-09-13 | 2023-09-08 | 中国石油大学(北京) | Nondestructive testing device for pipe fitting |
| CN110426447A (en) * | 2019-08-01 | 2019-11-08 | 捷航设备制造股份有限公司 | A kind of magnaflux for taking into account Multiple Type torsion bar |
| CN112903808A (en) * | 2021-03-19 | 2021-06-04 | 河北石探机械制造有限责任公司 | Magnetic memory online detection system for drill rod |
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| US5321356A (en) * | 1992-05-26 | 1994-06-14 | Ndt Technologies, Inc. | Magnetic inspection device for elongated objects and inspection method |
| CN201311410Y (en) * | 2008-12-08 | 2009-09-16 | 中国石油天然气股份有限公司 | Portable drilling rod magnetic memory detecting instrument |
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