CN102466656B - Detection method and device of meshing thread defects of milling barrel - Google Patents
Detection method and device of meshing thread defects of milling barrel Download PDFInfo
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- CN102466656B CN102466656B CN201010550569.7A CN201010550569A CN102466656B CN 102466656 B CN102466656 B CN 102466656B CN 201010550569 A CN201010550569 A CN 201010550569A CN 102466656 B CN102466656 B CN 102466656B
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Abstract
The invention relates to a detection method and a device of the meshing thread defects of a milling barrel; the milling barrel which is to be detected and comprises an external threaded connector, a sleeve and an internal thread connector is arranged on a roller wheel, so that external detection boot components and internal detection boot components are fully distributed on the milling barrel as well as an external thread connector detection area and an internal thread connector detection area thereof along a circumferential direction; a magnetic coil is used for axially magnetizing the milling barrel; the external detection boot components and the internal detection boot components are axially scanned on a pipe wall; acquired analog signals of thread defect leakage magnetic fields first are filtered by a filter and then are magnified by a magnifier, and finally detection signals which are converted into digital quantity through an analog/digital (A/D) converter are transmitted to a computer to detect the bare threads and made-up threads of the milling barrel.
Description
Technical field
The present invention relates to a kind of casing section mill thread engagement defect inspection method and device, particularly casing section mill thread engagement defect inspection method and the device based on Magnetic Flux Leakage Inspecting.
Background technology
At present, according to casing section mill operational method (SY/T 5247-1997) and casing section mill (SY5487-92), casing section mill should be done strict flaw detection, inspection before cover milling.Therefore, need regularly the defect of casing section mill thread engagement to be detected.
For the inefficacy of casing section mill thread engagement, for many years never have corresponding on-the-spot quick nondestructive detection technique.Have abroad the optical principle of employing method to carry out double thread and detect (threadinspection apparatus and method, patent number:3,250,383), but its detection method has problems with the reliability that device detects after all; In main electromagnetic detection, have and adopt conventional flux-leakage detection method to realize the relevant paper of having of screw thread defects detection and special train (apparatus for detecting substantialiy longitudianal flaws in the endarea of a tubular member using magnetic excitation and a scanningsensor to device, patent number:4,739,273; Pipe thread inspection apparatusutilizing a threaded sensor for engaging the threads of the pipe, patentnumber:3,327,205), but detection method is all more traditional, pick-up unit complexity, detection speed is slow, the more important thing is and can only detect dropout screw thread, helpless for the detection of casing section mill make-up screw thread; At home double thread detect research more and produce drill rod thread checkout equipment mainly contain Central China University of Science and Technology's Mechanical Academy (Tubing thread inspection by magnetic fluxleakage, NDT & E international), for the detection of thread engagement, among associating related scientific research institutes of tubing research institute of CNPC is is also researching and developing.
Summary of the invention
The object of this invention is to provide a kind of casing section mill thread engagement defect inspection method and device, the method and device can detect the casing section mill thread engagement defect the screw thread under engagement (that is make-up) state, have higher detection efficiency.
Casing section mill thread engagement defect detecting device of the present invention is made up of data Collection & Processing System, sleeve pipe, male connection detecting unit, female adapter detecting unit, detection assistant dolly, running roller; Male connection detecting unit and female adapter detecting unit lay respectively on detection assistant dolly; Data Collection & Processing System is connected with male connection detecting unit and female adapter detecting unit respectively; Sleeve pipe is positioned on running roller, and two ends connect respectively male connection, female adapter; Male connection, female adapter lay respectively in male connection detecting unit, female adapter detecting unit.
Male connection detecting unit, female adapter detecting unit are visited boots by magnetizing coil, slide rail, slide block, contiguous block, detection respectively and are formed; Outer detection is visited boots and is arranged in magnetizing coil inner chamber, is arranged on slide rail by contiguous block and slide block, and slide rail is fixed near magnetizing coil place; Interior detection is visited boots and is fixedly connected on slide block by contiguous block, and slide block is arranged on slide rail, and slide rail is positioned at the center of magnetizing coil, and one end is fixed on installing plate, and installing plate is vertically fixed on detection assistant dolly.
Detection assistant dolly is made up of track, VTOL (vertical take off and landing) parts, web joint, go-cart; VTOL (vertical take off and landing) parts are fixedly connected in go-cart, and web joint is arranged on VTOL (vertical take off and landing) parts.
It is that arcs of recesses is visited boots that boots are visited in outer detection, it is that convex is visited boots that boots are visited in interior detection, intermediate package magneto sensor, and arcs of recesses is visited boots along circumferential alternative arrangement, encircles sleeve pipe to be measured and joint outer wall, detect between two to visit between boots and partially overlap, form outer detection of annular and visit boots assembly, convex is visited boots along circumferential alternative arrangement, partially overlaps between between two, around sleeve pipe to be measured and inner nosepiece wall, form in annular and detect and visit boots assembly.
Data acquisition and processing system is composed in series by wave filter, amplifier, A/D converter, computing machine, and wave filter is visited boots assembly with outer detection, interior detection is visited boots assembly and is connected.
While detection, by to be measured by male connection, sleeve pipe, the casing section mill of female adapter composition is placed on running roller, make outer detection visit boots assembly, interior detection is visited boots assembly along being circumferentially covered with sleeve pipe and external thread thereof, female adapter detection zone, casing section mill is carried out to axial magnetized with magnetizing coil, boots assembly is visited in outer detection, interior detection is visited boots assembly and is scanned vertically in tube wall, the first device filtering after filtering of the simulating signal of the screw thread defect magnetic flux leakage field picking up, then amplify through amplifier, the detection signal that is converted to digital quantity finally by mistake A/D converter is sent in computing machine.
Casing section mill thread engagement defect inspection method provided by the invention, it is characterized in that: it comprises the outer coarse thread of casing section mill male connection, the outer fine thread detecting unit of sleeve pipe, fine thread detecting unit in male connection, coarse thread, fine thread detecting unit in female adapter, the outer fine thread detecting unit of sleeve pipe and signals collecting and processor.In the outer coarse thread of casing section mill male connection, the outer fine thread detecting unit of sleeve pipe and male connection, fine thread detecting unit is positioned at the sleeve pipe one end with male connection, and in female adapter, the outer fine thread detecting unit of coarse thread, fine thread detecting unit and sleeve pipe is positioned at the sleeve pipe one end with female adapter.Four detecting unit centers are centered close to sustained height with the sleeve pipe being placed on support.Signals collecting is connected with above-mentioned four detecting units respectively with processor, picks up respectively the laterally simulating signal of the stray field of wound of Bottom of Thread, then after filter and amplification and A/D conversion, obtains the detection signal of digital quantity.
The feature of casing section mill thread engagement detection method provided by the invention is: adopt magnetizing coil to carry out axial superpower magnetization to casing section mill thread engagement section, inspire the upper fault leakage of screw thread (particularly make-up screw thread) field, then adopt magnetic sensitive probe to pick up this leakage field.Adopt outer detecting unit to detect fine thread in male connection, interior detecting unit the outer coarse thread of male connection is detected and the sleeve pipe that is connected with male connection in fine thread detect; Adopt outer detecting unit to detect coarse thread, fine thread in female adapter, interior detecting unit detects the outer fine thread of the sleeve pipe being attached thereto.Detection probe is covered with screw thread detection zone, and pickup tube and joint screw thread place defect are revealed magnetic field the formal output with voltage, and the existence of determining wound by having or not of voltage jump whether.In a word, the present invention has realized the casing section mill thread engagement defect the screw thread under engagement (that is make-up) state has been detected, and has higher detection efficiency.
Brief description of the drawings
Fig. 1 a sleeve pipe and male connection screw thread defects detection principle schematic;
Fig. 1 b sleeve pipe and female adapter screw thread detect principle schematic;
Fig. 2 a casing section mill thread engagement defect detecting device structural representation;
The outer detection probe structural representation of Fig. 2 b casing section mill thread engagement defect detecting device;
Detection probe structural representation in Fig. 2 c casing section mill thread engagement defect detecting device;
Fig. 2 d casing section mill thread engagement defect detecting device detection assistant dolly schematic diagram;
Fig. 3 a casing section mill thread engagement defect detecting device detection probe schematic diagram;
The outer detection probe cell schematics of Fig. 3 b casing section mill thread engagement defect detecting device;
Detection probe cell schematics in Fig. 3 c casing section mill thread engagement defect detecting device;
The inside and outside detection probe cell data of Fig. 3 d casing section mill thread engagement defect detecting device gathers and disposal system schematic diagram;
Fig. 3 e arcs of recesses is visited boots schematic diagram;
Fig. 3 f convex is visited boots schematic diagram;
Wherein: 1 magnetizing coil, 2 magneto sensors, 3 sleeve pipes, 4 magnetic conduction terminations, 5 male connections, 6 female adapters, 7 male connection detecting units, 8 female adapter detecting units, 9 detection assistant dollies, 10 running rollers, 11 data Collection & Processing Systems, 12 slide rails, 13 slide blocks, 14 contiguous blocks, boots are visited in 15 outer detections, 16 sleeve pipes and joint, 17 installing plates, 18 web joints, 19 VTOL (vertical take off and landing) assemblies, 20 tracks, 21 go-carts, boots assembly is visited in 22 outer detections, 23 arcs of recesses are visited boots, boots assembly is visited in 24 interior detections, 25 convexs are visited boots, 26 wave filters, 27 amplifiers, 28A/D converter, 29 computing machines, boots are visited in 30 interior detections.
Embodiment
Casing section mill thread engagement defect detecting device of the present invention is made up of data Collection & Processing System 11, sleeve pipe 3, male connection detecting unit 7, female adapter detecting unit 8, detection assistant dolly 9, running roller 10; Male connection detecting unit 7 and female adapter detecting unit 8 lay respectively on detection assistant dolly 9; Data Collection & Processing System 11 is connected with male connection detecting unit 7 and female adapter detecting unit 8 respectively; Sleeve pipe 3 is positioned on running roller 10, and two ends connect respectively male connection 5, female adapter 6; Male connection 5, female adapter 6 lay respectively at that in male connection detecting unit 7, female adapter detecting unit 8, (Fig. 2 a).
Male connection detecting unit 7, female adapter detecting unit 8 are visited boots by magnetizing coil 1, slide rail 12, slide block 13, contiguous block 14, detection respectively and are formed; Outer detection is visited boots 15 and is arranged in magnetizing coil 1 inner chamber, is arranged on slide rail 12 by contiguous block 14 and slide block 13, and slide rail 12 is fixed near magnetizing coil 1 place; Interior detection is visited boots 30 and is fixedly connected on slide block 13 by contiguous block 14, slide block 13 is arranged on slide rail 12, slide rail 12 is positioned at the center of magnetizing coil 1, and one end is fixed on installing plate 17, and installing plate 17 is vertically fixed on (Fig. 2 b, 2c) on detection assistant dolly 9.
Detection assistant dolly 9 is made up of track 20, VTOL (vertical take off and landing) parts 19, web joint 18, go-cart 21; VTOL (vertical take off and landing) parts 19 are fixedly connected in go-cart 21, and web joint 18 is arranged on that on VTOL (vertical take off and landing) parts 19, (Fig. 2 d).
Outer detection is visited boots 15 for arcs of recesses spy boots 23, interior detection is visited boots 30 for convex spy boots 25, intermediate package magneto sensor 2, and arcs of recesses is visited boots 23 along circumferential alternative arrangement, encircles sleeve pipe to be measured and joint 16 outer walls, detect between two to visit between boots and partially overlap, form outer detection of annular and visit boots assembly 22, convex is visited boots 25 along circumferential alternative arrangement, partially overlaps between between two, around sleeve pipe to be measured and joint 16 inwalls, form in annular and detect and visit boots assembly 24 ().
Data acquisition and processing system 11 is composed in series by wave filter 26, amplifier 27, A/D converter 28, computing machine 29, and wave filter 26 is visited boots assembly 22 with outer detection, interior detection is visited boots assembly 24 and is connected.
While detection, casing section mill to be measured (being made up of male connection 5, sleeve pipe 3, female adapter 6) is placed on running roller 10, detection assistant dolly 9 approaches casing section mill along track 20 from two ends, during to detection station, stop, magnetizing coil 1 carries out axial magnetized to casing section mill, boots assembly 22 is visited in outer detection, 24 scannings vertically of boots assembly are visited in interior detection, first device 26 filtering after filtering of the simulating signal of the screw thread defect magnetic flux leakage field picking up, then pass through amplifier 27 and amplify, the detection signal that is converted to digital quantity finally by mistake A/D converter 28 is sent in computing machine 29.
As Fig. 1 a, adopt magnetizing coil 1 to carry out axial magnetized to sleeve pipe 3 and male connection 5 thereof, because joint is in end, in order to obtain better magnetization effect, increase by one at joint end face and extend magnetic conduction termination 4, in tube wall scanning vertically, reveal magnetic field to pick up screw thread defect with magneto sensor 2.Wherein, the interior fine thread defect leakage magnetic field that magneto sensor 2 is connected with sleeve pipe 3 for picking up male connection 5, the outer fine thread of sleeve pipe 3 ends, outside the end of male connection 5, coarse thread defect is revealed magnetic field.
As Fig. 1 b, adopt magnetizing coil 1 to carry out axial magnetized to sleeve pipe 3 and female adapter 6 thereof, in order to obtain better magnetization effect, increase by one at joint end face and extend magnetic conduction termination 4, in tube wall scanning vertically, reveal magnetic field to pick up screw thread defect with magneto sensor 2.Wherein, the interior fine thread defect leakage magnetic field that magneto sensor 2 is connected with sleeve pipe 3 for picking up female adapter 6, the outer fine thread defect of sleeve pipe 2 ends is revealed magnetic field, and in the end of female adapter 6, coarse thread defect is revealed magnetic field.
Visit boots assembly along being circumferentially covered with sleeve pipe and external thread thereof, female adapter detection zone with detecting, when magnetizing coil magnetizes casing section mill, detect and visit boots in the time that tube wall scans vertically, just can complete the detection of double thread defect.
Claims (1)
1. a casing section mill thread engagement defect detecting device, is characterized in that: be made up of data Collection & Processing System, sleeve pipe, male connection detecting unit, female adapter detecting unit, detection assistant dolly, running roller; Male connection detecting unit and female adapter detecting unit lay respectively on detection assistant dolly; Data Collection & Processing System is connected with male connection detecting unit and female adapter detecting unit respectively; Sleeve pipe is positioned on running roller, and two ends connect respectively male connection, female adapter; Male connection, female adapter lay respectively in male connection detecting unit, female adapter detecting unit;
Male connection detecting unit, female adapter detecting unit are visited boots by magnetizing coil, slide rail, slide block, contiguous block, detection respectively and are formed; Outer detection is visited boots and is arranged in magnetizing coil inner chamber, is arranged on slide rail by contiguous block and slide block, and slide rail is fixed near magnetizing coil place; Interior detection is visited boots and is fixedly connected on slide block by contiguous block, and slide block is arranged on slide rail, and slide rail is positioned at the center of magnetizing coil, and one end is fixed on installing plate, and installing plate (17) is vertically fixed on detection assistant dolly;
Detection assistant dolly is made up of track, VTOL (vertical take off and landing) parts, web joint, go-cart; VTOL (vertical take off and landing) parts are fixedly connected in go-cart, and web joint is arranged on VTOL (vertical take off and landing) parts;
It is that arcs of recesses is visited boots that boots are visited in outer detection, it is that convex is visited boots that boots are visited in interior detection, intermediate package magneto sensor, and arcs of recesses is visited boots along circumferential alternative arrangement, encircles sleeve pipe to be measured and joint outer wall, detect between two to visit between boots and partially overlap, form outer detection of annular and visit boots assembly, convex is visited boots along circumferential alternative arrangement, partially overlaps between between two, around sleeve pipe to be measured and inner nosepiece wall, form in annular and detect and visit boots assembly;
Data acquisition and processing system is composed in series by wave filter, amplifier, A/D converter, computing machine, and wave filter is visited boots assembly with outer detection, interior detection is visited boots assembly and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010550569.7A CN102466656B (en) | 2010-11-18 | 2010-11-18 | Detection method and device of meshing thread defects of milling barrel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010550569.7A CN102466656B (en) | 2010-11-18 | 2010-11-18 | Detection method and device of meshing thread defects of milling barrel |
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| CN102466656A CN102466656A (en) | 2012-05-23 |
| CN102466656B true CN102466656B (en) | 2014-08-06 |
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Citations (5)
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| US3177758A (en) * | 1960-10-07 | 1965-04-13 | Technicon Instr | Spectral flame burners and burner apparatus |
| US4739273A (en) * | 1984-03-02 | 1988-04-19 | Exxon Production Research Company | Apparatus for detecting substantially longitudinal flaws in the end area of a tubular member using magnetic excitation and a scanning sensor |
| CN1588035A (en) * | 2004-09-24 | 2005-03-02 | 华中科技大学 | Pipe rod screw fault detection sensor |
| CN2718577Y (en) * | 2003-09-25 | 2005-08-17 | 辽河石油勘探局 | Portable flaw detector for drilling tool |
| CN101498686A (en) * | 2009-02-25 | 2009-08-05 | 中国石油天然气股份有限公司 | Drilling tool screw thread magnetism detector |
-
2010
- 2010-11-18 CN CN201010550569.7A patent/CN102466656B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3177758A (en) * | 1960-10-07 | 1965-04-13 | Technicon Instr | Spectral flame burners and burner apparatus |
| US4739273A (en) * | 1984-03-02 | 1988-04-19 | Exxon Production Research Company | Apparatus for detecting substantially longitudinal flaws in the end area of a tubular member using magnetic excitation and a scanning sensor |
| CN2718577Y (en) * | 2003-09-25 | 2005-08-17 | 辽河石油勘探局 | Portable flaw detector for drilling tool |
| CN1588035A (en) * | 2004-09-24 | 2005-03-02 | 华中科技大学 | Pipe rod screw fault detection sensor |
| CN101498686A (en) * | 2009-02-25 | 2009-08-05 | 中国石油天然气股份有限公司 | Drilling tool screw thread magnetism detector |
Non-Patent Citations (2)
| Title |
|---|
| 丁劲锋.石油管具螺纹漏磁检测方法研究.《中国博士学位论文全文数据库》.2008,第58-60,83-85页. |
| 石油管具螺纹漏磁检测方法研究;丁劲锋;《中国博士学位论文全文数据库》;20080331;第58-60,83-85页 * |
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