CN103837594A - Magnetic flux leakage detecting device for steel pipe and detection method thereof - Google Patents
Magnetic flux leakage detecting device for steel pipe and detection method thereof Download PDFInfo
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- CN103837594A CN103837594A CN201410070775.6A CN201410070775A CN103837594A CN 103837594 A CN103837594 A CN 103837594A CN 201410070775 A CN201410070775 A CN 201410070775A CN 103837594 A CN103837594 A CN 103837594A
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Abstract
The invention provides a magnetic flux leakage detecting device for a steel pipe and a detection method thereof. The device comprises a first magnetizing coil, a hollow rotator and a second magnetizing coil, wherein the hollow rotator is provided with a probe rack with an inductive probe and drives the probe rack to rotate under the action of a rotation driving device; a probe shell is sleeved on the inductive probe; a plurality of inductive probes are distributed at equal degrees around the periphery of a through hole of the steel pipe; a steel pipe guider is arranged between the probe rack and the second magnetizing coil and provided with an axial driving device and a radial driving device; the end face of the steel pipe guider, close to the probe rack, is provided with a contact sensor and the end face of the other side is provided with a position sensor. By adopting the movement design of an anti-collision probe shell and the steel pipe guider, the detection of the end part of the steel pipe becomes possible, and the blank that the magnetic flux leakage detection of the pipe body and the end part cannot be simultaneously achieved by the existing magnetic flux leakage detection device is filled up.
Description
Technical field
The present invention relates to steel pipe Magnetic Flux Leakage Inspecting technical field, specifically a kind of steel pipe leakage magnetic detection device and detection method thereof.
Background technology
Steel pipe must detect to determine whether defectiveness of this steel pipe after creating.In recent years, Magnetic Flux Leakage Inspecting technology is fast with its detection speed, and precision is high, the advantage such as easily is automated, and uses more and more extensive in steel pipe detects.
The leakage magnetic detection device of steel pipe can only complete the Magnetic Flux Leakage Inspecting of body at present, can not complete the detection of body end simultaneously, exists steel tube end part to detect blind area in steel pipe leakage magnetic detection device.Steel pipe Magnetic Flux Leakage Inspecting exists the reason of detection blind area, end to be: in High-speed Steel Tube testing process, in the time that steel tube end part just arrives pick-up unit, for preventing steel tube end part impact microphone, most of leakage magnetic detection device is all just to make probe press close to steel pipe after waiting steel pipe to cross probe, and this process does not detect end sections region; And when steel tube end part is magnetized, there is magnetic line of force scattering phenomenon in end, make general magneto-dependent sensor saturated, brow leakage field signal is submerged.But in the use procedure of steel pipe, steel tube end part is many times main force part, the existence of detection blind area, end has very large potential safety hazard.
For the problems referred to above, mainly by the later stage, steel tube end part is carried out to aimed detection both at home and abroad and detect blind area to eliminate steel tube end part, as magnetic detection method, so greatly increase production cost, extend manufacture cycle, develop that a set of can to realize steel pipe leakage magnetic detection device body and end detecting extremely urgent simultaneously.Meanwhile, in the time changing the steel pipe of different tube diameters, the probe in existing steel pipe leakage magnetic detection device need manually be adjusted.Can have a strong impact on the accuracy of detection of steel pipe and manually adjust probe, and need to stop detection line could to probe adjust, reduced detection efficiency.
Summary of the invention
The present invention is in order to solve the problem of prior art, provide a kind of and can complete steel pipe leakage magnetic detection device and the detection method thereof that body end is detected, and probe can be adjusted automatically while changing the steel pipe of different tube diameters.
Pick-up unit provided by the invention comprises detection casing, detect tank ends and be respectively equipped with import scroll chuck and outlet scroll chuck, between the upper plate of detection casing and lower plate, along steel pipe working direction, the first magnetizing coil is housed successively, hollow rotary body and the second magnetizing coil, probe holder with inductive probe group is installed on hollow rotary body, hollow rotary body drives probe holder to walk around the rotation of steel pipe through hole under rotating driving device effect, each device center all has through hole, described inductive probe group comprises some inductive probes that steel pipe through hole surrounding equal angles distributes that were looped around, on inductive probe, cover has probe shell, between probe holder and the second magnetizing coil, be provided with steel pipe and draw body, steel pipe draws body axial drive means and radial drive is housed, and steel pipe draws body and is provided with feeler near the end face of probe holder, and opposite side end face is provided with position transducer.
Further improve, on described probe holder, be provided with some with inductive probe position to corresponding centripetal flexible motor, centripetal flexible motor is connected with the shell of popping one's head in by screw mandrel.
Further improve, between probe shell and centripetal flexible motor, be provided with spring.
Further improve, on described probe shell and the workplace of tested steel pipe, rounding is set.
Further limit, the rotating driving device of described hollow rotary body comprise be arranged in the external motor of detection case, master tape driving wheel and hollow rotary body outer rim from driven wheel, motor is by master tape driving wheel and be connected from driven wheel.
Further limit, described steel pipe draws body axial drive means and comprises servo cylinder, line slideway, slide block and contiguous block, servo cylinder draws body by contiguous block and steel pipe and is connected, and contiguous block is connected on line slideway by slide block, and contiguous block slides along line slideway under servo cylinder drives.
Further limit, described steel pipe draws body radial drive and comprises vertical movement guide rod and vertical movement cylinder, and axial drive means is connected to and is detected on casing by vertical movement guide rod, under vertical movement cylinder action, slides along vertical movement guide rod.
Further improve, the pawl mouth place of described import scroll chuck and outlet scroll chuck is provided with wheel.
The present invention also provides a kind of detection method of steel pipe leakage magnetic detection device, comprises the following steps:
1) steel pipe draws body and was arranged on steel pipe through hole near probe holder, and tested steel pipe, through after being arranged on the clamping centering of the wheel on scroll chuck, through the first magnetizing coil axial magnetized, draws body through hollow rotary body with probe holder and steel pipe and contacts;
2) in the time being embedded in steel pipe and drawing the feeler on end of body surface and sense that tested steel pipe contact steel pipe draws body, servo cylinder drives contiguous block to drive steel pipe to draw body to move in the same way than the slightly slow speed of tested steel pipe and tested steel pipe;
3) in the time that inductive probe has completed the detection of tested steel tube end part, servo cylinder driving steel pipe draws body and advances with the speed slightly faster than tested steel pipe, in the time that steel pipe draws the lip-deep feeler of end of body and senses that steel pipe draws body and departed from tested steel pipe, vertical movement air cylinder driven steel pipe draws body and moves vertically upward, allow tested steel pipe pass through smoothly, inductive probe detects body simultaneously;
4) in the time being placed on steel pipe and drawing the position transducer on body end side surface and sense that the afterbody of tested steel pipe has left, vertical movement air cylinder driven steel pipe draws body and drops to original level height, and simultaneously servo cylinder drives steel pipe to draw body to make it get back to original position to wait for next velamen inspection steel pipe;
5) complete tested steel pipe that a side end and body detect and arrive through bridging table the leakage magnetic detection device of another same detection function, now do not detect a side steel tube end part and first enter pick-up unit and complete end and detect.
Further improve, in the time that the diameter of tested steel pipe changes, centripetal flexible motor drives the motion of probe shell by screw mandrel, is adjusted to corresponding diameter.
Beneficial effect of the present invention is:
1, the present invention has designed anticollision probe shell, the shell that makes to pop one's head in makes probe without the impact of dodging tested steel tube end part at the very start in optimum detection position, directly start from end to detect, and draw by steel pipe the detection blind area that body has avoided steel tube end part to form because of magnetic line of force scattering, make the detection of steel tube end part become possibility, filled up existing leakage magnetic detection device and cannot complete the blank that body and brow leakage detect simultaneously.
2, utilize the motion of centripetal flexible Electric Machine Control probe, thereby realize the detection of different tube diameters steel pipe, solved because the artificial detection error of popping one's head in and bringing of adjusting has improved equipment automatization level and detection efficiency, reduced artificial work intensity.
3, on the surface of contact of probe shell and tested steel pipe, rounding is set, further avoid popping one's head in shell and tested steel pipe clash into.
4, between probe shell and centripetal flexible motor, be provided with spring, the shell that prevents from popping one's head in departs from optimum detection position because of the centrifugal force that High Rotation Speed produces.
Accompanying drawing explanation
Fig. 1 is steel pipe leakage magnetic detection device structural representation provided by the invention.
Fig. 2 is sonde configuration schematic diagram in steel pipe leakage magnetic detection device.
Fig. 3 is two steel pipe leakage magnetic detection device co-operation scheme of installations.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Steel pipe leakage magnetic detection device provided by the invention as shown in Figure 1, comprise detection casing, detect tank ends and be respectively equipped with import scroll chuck 1 and outlet scroll chuck 11, between the upper plate 20 of detection casing and lower plate 21, along steel pipe working direction, the first magnetizing coil 4 is housed successively, hollow rotary body 5 and the second magnetizing coil 10, hollow rotary body 5 is arranged on upper plate 20 by support 7, probe holder 8 with inductive probe group is installed on it, hollow rotary body 5 drives probe holder 8 to walk around the rotation of steel pipe through hole under rotating driving device effect, each device center all has through hole, described inductive probe group comprises some inductive probes that steel pipe through hole surrounding equal angles distributes that were looped around, on inductive probe, cover has probe shell 25, between probe holder 8 and the second magnetizing coil 10, be provided with steel pipe and draw body 9, steel pipe draws body 9 axial drive means and radial drive is housed, and steel pipe draws body 9 and is provided with feeler near the end face of probe holder 8, and opposite side end face is provided with position transducer.
Sonde configuration wherein as shown in Figure 2, on probe holder 8, be provided with some with inductive probe position to corresponding centripetal flexible motor 23, centripetal flexible motor 23 is connected with probe shell 25 by screw mandrel 26, between probe shell 25 and centripetal flexible motor 23, be provided with spring 24, on the workplace of probe shell 25 and tested steel pipe 3, rounding be set.
The rotating driving device of described hollow rotary body 5 comprise be arranged in the external motor of detection case 19, master tape driving wheel 18 and hollow rotary body 5 outer rims from driven wheel 6, motor 19 by master tape driving wheel 18 be connected from driven wheel 6.
Described steel pipe draws body 9 axial drive means and comprises servo cylinder 12, line slideway 15, slide block 16 and contiguous block 17, servo cylinder 12 draws body 9 by contiguous block 17 and steel pipe and is connected, contiguous block 17 is connected on line slideway by slide block, and contiguous block 17 slides along line slideway 15 under servo cylinder 12 drives.
Described steel pipe draws body 9 radial drive and comprises vertical movement guide rod 13 and vertical movement cylinder 14, and axial drive means is connected to and is detected on casing by vertical movement guide rod 13, under 14 effects of vertical movement cylinder, slides along vertical movement guide rod 13.The pawl mouth place of described import scroll chuck 1 and outlet scroll chuck 11 is provided with wheel 2.
Method of work of the present invention comprises the following steps:
1) steel pipe draws body 9 and was arranged on steel pipe through hole near probe holder 8, and tested steel pipe 3, through after being arranged on the clamping centering of the wheel 2 on scroll chuck 1, through the first magnetizing coil 4 axial magnetizeds, draws body 9 through hollow rotary body 5 with probe holder 8 and steel pipe and contacts;
2) in the time being embedded in steel pipe and drawing the feeler of body 9 end surfaces and sense that tested steel pipe 3 contacts steel pipe and draws body, servo cylinder 12 drives contiguous block 17 to drive steel pipe to draw body 9 to move in the same way than the slightly slow speed of tested steel pipe 3 and tested steel pipe 3;
3) in the time that inductive probe has completed the detection of tested steel tube end part, servo cylinder 12 drives steel pipe to draw body 9 to advance than the slightly fast speed of tested steel pipe 3, in the time that steel pipe draws feeler on body 9 end surfaces and senses that steel pipe draws body 9 and departed from tested steel pipe 3, vertical movement cylinder 14 drives steel pipe to draw body 9 and moves vertically upward, allow tested steel pipe 3 pass through smoothly, inductive probe detects body simultaneously;
4) in the time being placed on steel pipe and drawing the position transducer on body 9 end side surfaces and sense that the afterbody of tested steel pipe 3 has left, vertical movement cylinder 14 drives steel pipe to draw body 9 to drop to original level height, and servo cylinder 12 drives steel pipe to draw body 9 to make it get back to original position to wait for next velamen inspection steel pipe 3 simultaneously;
5) as shown in Figure 3, complete tested steel pipe that a side end and body detect and arrive through bridging table 22 leakage magnetic detection device of another same detection functions, now do not detect a side steel tube end part and first enter pick-up unit and complete end and detect.
In the time that the diameter of tested steel pipe 3 changes, centripetal flexible motor 23 drives probe shell 25 to move by screw mandrel 26, is adjusted to corresponding diameter.
Claims (10)
1. a steel pipe leakage magnetic detection device, comprise detection casing, detect tank ends and be respectively equipped with import scroll chuck (1) and outlet scroll chuck (11), between the upper plate (20) of detection casing and lower plate (21), along steel pipe working direction, the first magnetizing coil (4) is housed successively, hollow rotary body (5) and the second magnetizing coil (10), probe holder (8) with inductive probe group is installed on hollow rotary body (5), hollow rotary body (5) drives probe holder (8) to walk around the rotation of steel pipe through hole under rotating driving device effect, each device center all has through hole, it is characterized in that: described inductive probe group comprises some inductive probes that steel pipe through hole surrounding equal angles distributes that were looped around, on inductive probe, cover has probe shell (25), between probe holder (8) and the second magnetizing coil (10), be provided with steel pipe and draw body (9), steel pipe draws body (9) axial drive means and radial drive is housed, steel pipe draws body (9) and is provided with feeler near the end face of probe holder (8), and opposite side end face is provided with position transducer.
2. steel pipe leakage magnetic detection device according to claim 1, it is characterized in that: on described probe holder (8), be provided with some with inductive probe position to corresponding centripetal flexible motor (23), centripetal flexible motor (23) by screw mandrel (26) with pop one's head in shell (25) be connected.
3. steel pipe leakage magnetic detection device according to claim 2, is characterized in that: between described probe shell (25) and centripetal flexible motor (23), be provided with spring (24).
4. steel pipe leakage magnetic detection device according to claim 1 and 2, is characterized in that: on described probe shell (25) and the workplace of tested steel pipe (3), rounding is set.
5. steel pipe leakage magnetic detection device according to claim 1 and 2, it is characterized in that: the rotating driving device of described hollow rotary body (5) comprise be arranged in the external motor of detection case (19), master tape driving wheel (18) and hollow rotary body (5) outer rim from driven wheel (6), motor (19) is by master tape driving wheel (18) and being connected from driven wheel (6).
6. steel pipe leakage magnetic detection device according to claim 1 and 2, it is characterized in that: described steel pipe draws body (9) axial drive means and comprises servo cylinder (12), line slideway (15), slide block (16) and contiguous block (17), servo cylinder (12) draws body (9) by contiguous block (17) and steel pipe and is connected, contiguous block (17) is connected on line slideway by slide block, and contiguous block (17) slides along line slideway (15) under servo cylinder (12) drives.
7. steel pipe leakage magnetic detection device according to claim 1 and 2, it is characterized in that: described steel pipe draws body (9) radial drive and comprises vertical movement guide rod (13) and vertical movement cylinder (14), axial drive means is connected to and is detected on casing by vertical movement guide rod (13), under vertical movement cylinder (14) effect, slides along vertical movement guide rod (13).
8. steel pipe leakage magnetic detection device according to claim 1 and 2, is characterized in that: the pawl mouth place of described import scroll chuck (1) and outlet scroll chuck (11) is provided with wheel (2).
9. the detection method of the steel pipe leakage magnetic detection device described in more than one any one claims, is characterized in that comprising the following steps:
1) steel pipe draws body (9) and was arranged on steel pipe through hole near probe holder (8), tested steel pipe (3) is through after being arranged on the clamping centering of the wheel (2) on scroll chuck (1), through the first magnetizing coil (4) axial magnetized, draw body (9) through hollow rotary body (5) with probe holder (8) and steel pipe and contact;
2) in the time being embedded in steel pipe and drawing the feeler of body (9) end surface and sense that tested steel pipe (3) contact steel pipe draws body, servo cylinder (12) drives contiguous block (17) to drive steel pipe to draw body (9) to move in the same way than the slightly slow speed of tested steel pipe (3) and tested steel pipe (3);
3) in the time that inductive probe has completed the detection of tested steel tube end part, servo cylinder (12) drives steel pipe to draw body (9) to advance than the slightly fast speed of tested steel pipe (3), in the time that steel pipe draws feeler on body (9) end surface and senses that steel pipe draws body (9) and departed from tested steel pipe (3), vertical movement cylinder (14) drives steel pipe to draw body (9) and moves vertically upward, allow tested steel pipe (3) pass through smoothly, inductive probe detects body simultaneously;
4) in the time being placed on steel pipe and drawing the position transducer on body (9) end side surface and sense that the afterbody of tested steel pipe (3) has left, vertical movement cylinder (14) drives steel pipe to draw body (9) and drop to original level height, and servo cylinder (12) drives steel pipe to draw body (9) to make it get back to original position to wait for next velamen inspection steel pipe (3) simultaneously;
5) complete tested steel pipe that a side end and body detect and arrive through bridging table (22) leakage magnetic detection device of another same detection function, now do not detect a side steel tube end part and first enter pick-up unit and complete end and detect.
10. the detection method of steel pipe leakage magnetic detection device according to claim 9, it is characterized in that: in the time that the diameter of tested steel pipe (3) changes, centripetal flexible motor (23) drives probe shell (25) motion by screw mandrel (26), is adjusted to corresponding diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410070775.6A CN103837594B (en) | 2014-02-28 | 2014-02-28 | Magnetic flux leakage detecting device for steel pipe and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410070775.6A CN103837594B (en) | 2014-02-28 | 2014-02-28 | Magnetic flux leakage detecting device for steel pipe and detection method thereof |
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| CN103837594A true CN103837594A (en) | 2014-06-04 |
| CN103837594B CN103837594B (en) | 2017-01-11 |
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| CN201410070775.6A Expired - Fee Related CN103837594B (en) | 2014-02-28 | 2014-02-28 | Magnetic flux leakage detecting device for steel pipe and detection method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181790A (en) * | 2015-08-03 | 2015-12-23 | 南京博克纳自动化系统有限公司 | High-efficiency pipe magnetic flux leakage detection device and detection method |
| CN106770629A (en) * | 2017-02-22 | 2017-05-31 | 南京航空航天大学 | A kind of non-blind area steel tube truss device and method for being suitable for different tube diameters |
| CN107643338A (en) * | 2017-08-25 | 2018-01-30 | 上海市特种设备监督检验技术研究院 | A kind of experimental provision for being used to evaluate Pipeline Magnetic Flux Leakage Inspection performance |
| CN113340982A (en) * | 2021-05-14 | 2021-09-03 | 中石化石油机械股份有限公司沙市钢管分公司 | Magnetic flux leakage detection equipment calibration device and detection method for surface quality of steel pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181790A (en) * | 2015-08-03 | 2015-12-23 | 南京博克纳自动化系统有限公司 | High-efficiency pipe magnetic flux leakage detection device and detection method |
| CN106770629A (en) * | 2017-02-22 | 2017-05-31 | 南京航空航天大学 | A kind of non-blind area steel tube truss device and method for being suitable for different tube diameters |
| CN107643338A (en) * | 2017-08-25 | 2018-01-30 | 上海市特种设备监督检验技术研究院 | A kind of experimental provision for being used to evaluate Pipeline Magnetic Flux Leakage Inspection performance |
| CN113340982A (en) * | 2021-05-14 | 2021-09-03 | 中石化石油机械股份有限公司沙市钢管分公司 | Magnetic flux leakage detection equipment calibration device and detection method for surface quality of steel pipe |
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