CN201697891U - Pipeline defect and flux leakage detector - Google Patents
Pipeline defect and flux leakage detector Download PDFInfo
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- CN201697891U CN201697891U CN2010201538964U CN201020153896U CN201697891U CN 201697891 U CN201697891 U CN 201697891U CN 2010201538964 U CN2010201538964 U CN 2010201538964U CN 201020153896 U CN201020153896 U CN 201020153896U CN 201697891 U CN201697891 U CN 201697891U
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Abstract
The utility model relates to the technical field of pipeline defect detection, and relates to a pipeline defect and flux leakage detector which includes a central shaft, a flux conducting device and a leakage magnetic flux detecting device; the two ends of the central shaft are fixedly provided with a left packing cup and a right packing cup through a flange plate and a platen; the central shaft between the left packing cup and the right packing cup is provided with the flux conducting device capable of conducting flux for a detected pipeline; and the leakage magnetic flux detecting device capable of detecting a flux signal is arranged outside the middle part of the flux conducting device. The pipeline defect and flux leakage detector has a reasonable and compact structure, is convenient to be used, can effectively magnetize an oil tube, and improves the magnetization intensity of the wall of the tube to be detected; therefore, the pipeline defect and flux leakage detector can greatly improve the defect detecting quality of oil conveying pipelines; as a leaf spring is arranged which can better deform, the pipeline defect and flux leakage detector is hard to be plugged when passing through a pipeline reducing part.
Description
One, technical field
The utility model relates to defect of pipeline detection technique field, is a kind of pipeline defect and magnetic leakage detection device.
Two, background technology
At present, the serious problems that China's oil gas long distance pipeline faces are: most of in-service pipelines are to build for 60 to the seventies, aged phase in now having entered, multiple stage of the accident that is in.China is used for the maintenance cost of oil and gas pipes every year up to several hundred million units, and the trend that progressively increases is arranged.Because the restriction of examined means, pipe damage situation majority can not definitely be differentiated and locate, and often causes blindly and excavates, blindly scraps, keeps in repair unnecessary loss such as lacking science.Leakage method is one of important means of the oil gas long distance pipeline being carried out Non-Destructive Testing, and the leakage field intensity of the ferromagnetic material surface of the work that it is magnetized by measurement is judged the size of workpiece, defect.The detection principle of leakage method is that the requirement testee has magnetic flux characteristic preferably, after the local flux of testee is saturated, the two poles of the earth of magnet and testee form the magnetic field of sealing, if homogeneous media distributes in the testee, tight, the inside and outside defective of nothing, thinking under the perfect condition does not have magnetic flux to pass through from outer wall.Because it is very expensive to introduce external device price, quantitatively can not satisfy application demand, and existing magnetizing assembly can not magnetize to oil pipe effectively, the magnetization is not high, therefore it is low to detect quality, and by the pipeline reducing diameter position time blocking problem takes place easily.
Three, summary of the invention
The utility model provides a kind of pipeline defect and magnetic leakage detection device, overcome the deficiency of above-mentioned prior art, it can effectively solve existing magnetizing assembly and can not magnetize oil pipe effectively, and the magnetization is not high, and blocking problem easily takes place by the pipeline reducing diameter position time.
The technical solution of the utility model realizes by following measure: a kind of pipeline defect and magnetic leakage detection device comprises central shaft, magnetic conduction device and leakage flux pick-up unit; Two ends at central shaft are installed with left leather cup and right leather cup by ring flange and pressing plate; The magnetic conduction device that can give detected pipeline magnetic conduction is installed on the central shaft between left leather cup and the right leather cup, the leakage flux pick-up unit that can detect magnetic leakage signal is installed in the outside, magnetic conduction device middle part.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
Above-mentioned magnetic conduction device can adopt split blade type magnetic conduction device, and this split blade type magnetic conduction device comprises yoke, magnet steel and steel brush hair; Left end and right-hand member at central shaft are installed with left flange plate and right ring flange; On the periphery of the central shaft between left flange plate and the right ring flange, plate spring groups is arranged uniformly at intervals, each plate spring groups comprises at least two laminated springs, each laminated spring all is fixedly mounted on the central shaft, have and the corresponding yoke of plate spring groups in the outside of each plate spring groups, the left end of each yoke is by left connecting rod and left flange plate and central shaft is hinged and energy is inside and outside mobile, the right-hand member of each yoke is by right connecting rod and right ring flange and central shaft is hinged and energy is inside and outside mobile, and the bottom of yoke is pressed on the top of plate spring groups; On the left part of yoke and right part, be fixed with magnet steel respectively, on each magnet steel, be installed with the steel brush hair.
The left end of above-mentioned yoke and right-hand member are can be respectively hinged by the left outer end of the right outer end of bearing pin and left connecting rod and right connecting rod, the left side of left side connecting rod is inner hinged with left flange plate and central shaft, and right the inner of right connecting rod and right ring flange and central shaft are hinged; There is slotted hole left outer end at right connecting rod, and pin sleeve is contained in the slotted hole and yoke is moved inside and outside slotted hole.
Between above-mentioned left flange plate and the central shaft mounting groove can be arranged, the left side of left connecting rod is inner to be hinged in the mounting groove by bearing pin, between right ring flange and the central shaft mounting groove is arranged, and the right inner of right connecting rod is hinged in the mounting groove by bearing pin.
The bottom of above-mentioned laminated spring can be installed on the central shaft by clamping plate and screw retention.
Above-mentioned magnetic conduction device can adopt circumference formula magnetic conduction steel brush, and this circumference formula magnetic conduction steel brush comprises bristle and bristle holder; Bristle holder is the U-lag body circle of shape coiling formation hollow in the shape of a spiral, is installed with bristle on the U-lag body, and the U-lag body is fixedly mounted on the central shaft.
Above-mentioned bristle can take the shape of the letter U, and bristle is fixedly mounted on the bottom of U-lag body bristle by the U-shaped bottom that steel wire is pressed in bristle, and the two ends of steel wire are fixedly mounted on the two ends of U-lag body.
The two ends of above-mentioned steel wire can be pressed on the two ends of U-lag body after bending 180 °, and perhaps, the two ends of steel wire are welded on the two ends of U-lag body.
Above-mentioned leakage flux pick-up unit can comprise Magnetic Flux Leakage Inspecting probe and ring body, on ring body, evenly be installed with the Magnetic Flux Leakage Inspecting probe, on the Magnetic Flux Leakage Inspecting probe, be fixed with Hall element or magnetic induction coil, on Hall element or magnetic induction coil, be connected with the magnetic leakage signal pipeline, ring body passes through at least three connecting rod and central shaft and yoke is hinged and energy is inside and outside moves, and is equipped with between ring body and yoke and the corresponding extension spring of connecting rod.
Above-mentioned Magnetic Flux Leakage Inspecting probe can comprise base plate, upper plate and left swash plate that is parallel to each other and right swash plate, the left end of base plate and right-hand member are fixed together with the lower end of left swash plate and right swash plate respectively, the left end of upper plate and right-hand member are fixed together with the upper end of left swash plate and right swash plate respectively, at the upper plate internal fixation Hall element or magnetic induction coil are installed, the inner of magnetic leakage signal pipeline and Hall element or magnetic induction coil link together, the outer end of magnetic leakage signal pipeline is positioned at the outside of upper plate, and base plate is fixedly mounted on the ring body.
The utility model reasonable and compact in structure, easy to use, it can magnetize oil pipe effectively, improved the magnetization of tested tube wall, therefore can greatly improve the detection quality of oil pipeline defective, can well be out of shape owing to be provided with laminated spring, therefore by the pipeline reducing diameter position time, be difficult for stopping up.
Four, description of drawings
Accompanying drawing 1 is the main TV structure synoptic diagram of the utility model most preferred embodiment.
Accompanying drawing 2 be in the accompanying drawing 1 A-A to the sectional structure synoptic diagram.
Accompanying drawing 3 is looked half section structure for amplifying synoptic diagram for the master of leakage flux pick-up unit in the utility model.
Accompanying drawing 4 is the main TV structure synoptic diagram of circumference formula magnetic conduction steel brush in the utility model.
Accompanying drawing 5 be in the accompanying drawing 4 B-B to the sectional structure synoptic diagram.
Coding in the accompanying drawing is respectively: 1 is central shaft, and 2 is pressing plate, and 3 is left leather cup, 4 is right leather cup, and 5 is yoke, and 6 is magnet steel, 7 is the steel brush hair, and 8 is left flange plate, and 9 is right ring flange, 10 is laminated spring, and 11 is left connecting rod, and 12 is right connecting rod, 13 is bearing pin, and 14 is slotted hole, and 15 is clamping plate, 16 are the Magnetic Flux Leakage Inspecting probe, and 17 is ring body, and 18 is Hall element or magnetic induction coil, 19 is the magnetic leakage signal pipeline, and 20 is connecting rod, and 21 are extension spring, 22 is base plate, and 23 is upper plate, and 24 is left swash plate, 25 is right swash plate, 26 is bristle, and 27 is the U-lag body, and 28 is steel wire.
Five, embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
Shown in accompanying drawing 1,2, this pipeline defect and magnetic leakage detection device comprises central shaft 1, magnetic conduction device and leakage flux pick-up unit; Two ends at central shaft 1 are installed with left leather cup 3 and right leather cup 4 by ring flange and pressing plate 2; The magnetic conduction device that can give detected pipeline magnetic conduction is installed on the central shaft 1 between left leather cup 3 and the right leather cup 4, the leakage flux pick-up unit that can detect magnetic leakage signal is installed in the outside, magnetic conduction device middle part.
Can according to actual needs above-mentioned pipeline defect and magnetic leakage detection device be made further optimization and/or improvements:
Shown in accompanying drawing 1,2, the magnetic conduction device adopts split blade type magnetic conduction device, and this split blade type magnetic conduction device comprises yoke 5, magnet steel 6 and steel brush hair 7; Left end and right-hand member at central shaft 1 are installed with left flange plate 8 and right ring flange 9; On the periphery of the central shaft 1 between left flange plate 8 and the right ring flange 9, plate spring groups is arranged uniformly at intervals, each plate spring groups comprises at least two laminated springs 10, each laminated spring 10 all is fixedly mounted on the central shaft 1, have and the corresponding yoke 5 of plate spring groups in the outside of each plate spring groups, the left end of each yoke 5 is hinged and can inside and outsidely move by left connecting rod 11 and left flange plate 8 and central shaft 1, the right-hand member of each yoke 5 is hinged and can inside and outsidely move by right connecting rod 12 and right ring flange 9 and central shaft 1, and the bottom of yoke 5 is pressed on the top of plate spring groups; On the left part of yoke 5 and right part, be fixed with magnet steel 6 respectively, on each magnet steel 6, be installed with steel brush hair 7.
Shown in accompanying drawing 1,2, the left end of yoke 5 and the right-hand member left outer end of the right outer end by bearing pin 13 and left connecting rod 11 and right connecting rod 12 respectively are hinged, the left side of left side connecting rod 11 is inner hinged with left flange plate 8 and central shaft 1, and right the inner of right connecting rod 12 and right ring flange 9 and central shaft 1 are hinged; There is slotted hole 14 left outer end at right connecting rod 12, and bearing pin 13 is sleeved in the slotted hole 14 and can makes yoke 5 along slotted hole 14 inside and outside moving.
Shown in accompanying drawing 1,2, between left flange plate 8 and the central shaft 1 mounting groove is arranged, the left side of left side connecting rod 11 is inner to be hinged in the mounting groove by bearing pin 13, between right ring flange 9 and the central shaft 1 mounting groove is arranged, and the right inner of right connecting rod 12 is hinged in the mounting groove by bearing pin 13.
Shown in accompanying drawing 1,2, the bottom of laminated spring 10 is installed on the central shaft 1 by clamping plate 15 and screw retention.
Shown in accompanying drawing 4,5, the magnetic conduction device adopts circumference formula magnetic conduction steel brush, and this circumference formula magnetic conduction steel brush comprises bristle 26 and bristle holder; Bristle holder is U-lag body 27 circle of shape coiling formation hollow in the shape of a spiral, is installed with bristle 26 on U-lag body 27, and U-lag body 27 is fixedly mounted on the central shaft 1.
Shown in accompanying drawing 4,5, bristle 26 takes the shape of the letter U, and bristle 26 is fixedly mounted on the bottom of U-lag body 27 bristle 26 by the U-shaped bottom that steel wire 28 is pressed in bristle 26, and the two ends of steel wire 28 are fixedly mounted on the two ends of U-lag body 27.
Shown in accompanying drawing 4,5, the two ends of steel wire 28 are bent on the two ends that are pressed on U-lag body 27 after 180 °, and perhaps, the two ends of steel wire 28 are welded on the two ends of U-lag body 27.
As shown in Figure 3, the leakage flux pick-up unit comprises Magnetic Flux Leakage Inspecting probe 16 and ring body 17, on ring body 17, evenly be installed with Magnetic Flux Leakage Inspecting probe 16, on Magnetic Flux Leakage Inspecting probe 16, be fixed with Hall element or magnetic induction coil 18, on Hall element or magnetic induction coil 18, be connected with magnetic leakage signal pipeline 19, ring body 17 connecting rod 20 by at least three and central shaft 1 and yoke 5 are hinged and can inside and outsidely move, and are equipped with between ring body 17 and yoke 5 and connecting rod 20 corresponding extension springs 21.
As shown in Figure 3, Magnetic Flux Leakage Inspecting probe 16 comprises base plate 22, upper plate 23 and the left swash plate 24 and the right swash plate 25 that are parallel to each other, the left end of base plate 22 and right-hand member are fixed together with the lower end of left swash plate 24 and right swash plate 25 respectively, the left end of upper plate 23 and right-hand member are fixed together with the upper end of left swash plate 24 and right swash plate 25 respectively, at upper plate 23 internal fixation Hall element or magnetic induction coil 18 are installed, the inner of magnetic leakage signal pipeline 19 and Hall element or magnetic induction coil 18 link together, the outer end of magnetic leakage signal pipeline 19 is positioned at the outside of upper plate 23, and base plate 22 is fixedly mounted on the ring body 17.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of the utility model most preferred embodiment: the utility model is installed the back send in the oil pipe by left front right back direction, liquid in the oil pipe promotes left leather cup 3 and right leather cup 4 and the utility model is advanced along oil pipe, by steel brush hair 7, magnet steel 6 and yoke 5 are magnetized the tube wall of oil pipe fully, after the local flux of testee is saturated, the two poles of the earth of magnet and testee form the magnetic field of sealing, when arriving the defective local time of oil pipe tube wall, can cause fault location and near magnetic resistance thereof to increase, and make near the magnetic field the defective distort, at this moment most of magnetic flux can be walked around defective in workpiece inside, also have the small part magnetic flux can pass defective, also have at last the part magnetic flux leave workpiece on, lower surface and walk around defective through air, the latter is exactly so-called leakage flux, they can be recorded by Hall element on the pipeline defect and magnetic leakage detection device or mobile coil 18, thereby can detect the defective place of oil pipe tube wall fast and accurately.
Claims (10)
1. a pipeline defect and magnetic leakage detection device is characterized in that comprising central shaft, magnetic conduction device and leakage flux pick-up unit; Two ends at central shaft are installed with left leather cup and right leather cup by ring flange and pressing plate; The magnetic conduction device that can give detected pipeline magnetic conduction is installed on the central shaft between left leather cup and the right leather cup, the leakage flux pick-up unit that can detect magnetic leakage signal is installed in the outside, magnetic conduction device middle part.
2. pipeline defect and magnetic leakage detection device according to claim 1 is characterized in that the magnetic conduction device adopts split blade type magnetic conduction device, and this split blade type magnetic conduction device comprises yoke, magnet steel and steel brush hair; Left end and right-hand member at central shaft are installed with left flange plate and right ring flange; On the periphery of the central shaft between left flange plate and the right ring flange, plate spring groups is arranged uniformly at intervals, each plate spring groups comprises at least two laminated springs, each laminated spring all is fixedly mounted on the central shaft, have and the corresponding yoke of plate spring groups in the outside of each plate spring groups, the left end of each yoke is by left connecting rod and left flange plate and central shaft is hinged and energy is inside and outside mobile, the right-hand member of each yoke is by right connecting rod and right ring flange and central shaft is hinged and energy is inside and outside mobile, and the bottom of yoke is pressed on the top of plate spring groups; On the left part of yoke and right part, be fixed with magnet steel respectively, on each magnet steel, be installed with the steel brush hair.
3. pipeline defect and magnetic leakage detection device according to claim 2, the left outer end of the right outer end by bearing pin and left connecting rod and right connecting rod is hinged respectively to it is characterized in that the left end of yoke and right-hand member, the left side of left side connecting rod is inner hinged with left flange plate and central shaft, and right the inner of right connecting rod and right ring flange and central shaft are hinged; There is slotted hole left outer end at right connecting rod, and pin sleeve is contained in the slotted hole and yoke is moved inside and outside slotted hole.
4. pipeline defect and magnetic leakage detection device according to claim 3, it is characterized in that between left flange plate and the central shaft mounting groove being arranged, the left side of left side connecting rod is inner to be hinged in the mounting groove by bearing pin, between right ring flange and the central shaft mounting groove is arranged, the right inner of right connecting rod is hinged in the mounting groove by bearing pin.
5. pipeline defect and magnetic leakage detection device according to claim 4 is characterized in that the bottom of laminated spring is installed on the central shaft by clamping plate and screw retention.
6. pipeline defect and magnetic leakage detection device according to claim 1 is characterized in that the magnetic conduction device adopts circumference formula magnetic conduction steel brush, and this circumference formula magnetic conduction steel brush comprises bristle and bristle holder; Bristle holder is the U-lag body circle of shape coiling formation hollow in the shape of a spiral, is installed with bristle on the U-lag body, and the U-lag body is fixedly mounted on the central shaft.
7. pipeline defect and magnetic leakage detection device according to claim 6, it is characterized in that bristle takes the shape of the letter U, bristle is fixedly mounted on the bottom of U-lag body bristle by the U-shaped bottom that steel wire is pressed in bristle, and the two ends of steel wire are fixedly mounted on the two ends of U-lag body.
8. pipeline defect and magnetic leakage detection device according to claim 7 is characterized in that the two ends of steel wire are bent on the two ends that are pressed on the U-lag body after 180 °, and perhaps, the two ends of steel wire are welded on the two ends of U-lag body.
9. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described pipeline defect and magnetic leakage detection devices, it is characterized in that the leakage flux pick-up unit comprises Magnetic Flux Leakage Inspecting probe and ring body, on ring body, evenly be installed with the Magnetic Flux Leakage Inspecting probe, on the Magnetic Flux Leakage Inspecting probe, be fixed with Hall element or magnetic induction coil, on Hall element or magnetic induction coil, be connected with the magnetic leakage signal pipeline, ring body passes through at least three connecting rod and central shaft and yoke is hinged and energy is inside and outside moves, and is equipped with between ring body and yoke and the corresponding extension spring of connecting rod.
10. pipeline defect and magnetic leakage detection device according to claim 7, it is characterized in that the Magnetic Flux Leakage Inspecting probe comprises base plate, upper plate and the left swash plate and the right swash plate that are parallel to each other, the left end of base plate and right-hand member are fixed together with the lower end of left swash plate and right swash plate respectively, the left end of upper plate and right-hand member are fixed together with the upper end of left swash plate and right swash plate respectively, at the upper plate internal fixation Hall element or magnetic induction coil are installed, the inner of magnetic leakage signal pipeline and Hall element or magnetic induction coil link together, the outer end of magnetic leakage signal pipeline is positioned at the outside of upper plate, and base plate is fixedly mounted on the ring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201538964U CN201697891U (en) | 2010-04-09 | 2010-04-09 | Pipeline defect and flux leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201538964U CN201697891U (en) | 2010-04-09 | 2010-04-09 | Pipeline defect and flux leakage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697891U true CN201697891U (en) | 2011-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201538964U Expired - Lifetime CN201697891U (en) | 2010-04-09 | 2010-04-09 | Pipeline defect and flux leakage detector |
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| Country | Link |
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| CN (1) | CN201697891U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819181A (en) * | 2010-04-09 | 2010-09-01 | 新疆三叶管道技术有限责任公司 | Pipeline defect and magnetic leakage detection device |
| CN108459074A (en) * | 2017-12-20 | 2018-08-28 | 北京华航无线电测量研究所 | A kind of two-dimentional relocation mechanism for pipe detection |
| US20220146455A1 (en) * | 2016-08-11 | 2022-05-12 | Novitech Inc. | Magnetizer With Cushion |
-
2010
- 2010-04-09 CN CN2010201538964U patent/CN201697891U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819181A (en) * | 2010-04-09 | 2010-09-01 | 新疆三叶管道技术有限责任公司 | Pipeline defect and magnetic leakage detection device |
| US20220146455A1 (en) * | 2016-08-11 | 2022-05-12 | Novitech Inc. | Magnetizer With Cushion |
| US11946903B2 (en) * | 2016-08-11 | 2024-04-02 | Novitech, Inc. | Magnetizer with cushion |
| CN108459074A (en) * | 2017-12-20 | 2018-08-28 | 北京华航无线电测量研究所 | A kind of two-dimentional relocation mechanism for pipe detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110105 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |