CN201548519U - Wall-climbing magnetic leakage scanning detector for storage tank wallboard - Google Patents
Wall-climbing magnetic leakage scanning detector for storage tank wallboard Download PDFInfo
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- CN201548519U CN201548519U CN2009202787660U CN200920278766U CN201548519U CN 201548519 U CN201548519 U CN 201548519U CN 2009202787660 U CN2009202787660 U CN 2009202787660U CN 200920278766 U CN200920278766 U CN 200920278766U CN 201548519 U CN201548519 U CN 201548519U
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Abstract
A wall-climbing magnetic leakage scanning detector for a storage tank wallboard is mainly used for solving the problems of the prior storage tank wallboard that the shortcoming detecting manner has low efficiency, low precision and high labor intensity of the operator. The magnetic leakage scanning detector comprises a magnetizing unit, wherein the magnetizing unit comprises a gag bit, a permanent magnet and a magnetic boot; the permanent magnet is a high-performance rubidium, iron, boron, rare earth permanent magnet; the permanent magnet and the magnetic boot are respectively fixed on two lower ends of the gag bit; a driving and walking unit comprises a driving wheel, a support wheel, a walking bracket, a motor, a reducer, and the like; the driving wheel is connected with the walking bracket; and the walking bracket is fixedly connected with the gag bit of the magnetizing unit. The detector can automatically climb along the storage tank wallboard.
Description
Technical field:
The present invention relates to a kind of instrument that fields such as chemical industry, oil movement and storage utilize the Magnetic Flux Leakage Inspecting principle that the stave sheets defective is detected that is used for, relate to a kind of leakage field scanning detector that wall detects of can on stave sheets, realizing climbing automatically specifically.
Background technology:
In oil refining and petrochemical complex production, there are numerous all kinds of atmospheric vertical storage tanks to be used to store oil, petrochemical complex and chemical products.Because these products have certain corrosivity, add the continuous variation of liquid level and ground, thereby the atmospheric vertical storage tank will be subjected to certain damage or produce active defective along with the variation of time, also can cause product leakage when serious, cause contaminated environment and the generation of bringing out explosion accident, therefore, the research of the detection of atmospheric vertical storage tank and assessment technology has caused the great attention of domestic the departments concerned, but does not also have the detection of the realization stave sheets that a kind of quite good detecting device can be quick, safe in the prior art.In addition, the position of stave sheets gas-liquid two-phase was detected pretty troublesomely in the past, all needed to stop production and opened jar or scaffold erecting, and testing result is also inaccurate.Therefore, how effectively to carry out the defects detection of stave sheets and the detection of gas-liquid two-phase position and become the technical matters that industry is badly in need of solution.
Summary of the invention:
In order to solve in the prior art defects detection of stave sheets and the detection of gas-liquid two-phase position there is not a kind of device preferably, make that existing stave sheets detection means efficient is low, the problem that low precision and labor intensity of operating staff are big, the invention provides a kind of stave sheets and climb wall leakage field scanning detector, this kind stave sheets is climbed wall leakage field scanning detector and can be creeped automatically with on realizing along stave sheets, following motion scan detects or a left side, the scanning that moves right detects, move up and down original leakage field scanner realization detection and no longer need operating personnel to set up framing scaffold, satisfied the requirement that stave sheets detects.And this detector is simple in structure, volume is little, simple and efficient to handle, can realize that the online surfaces externally and internally of wallboard scans simultaneously, shows in real time and analyzes.
Technical scheme of the present invention is: this kind stave sheets is climbed wall leakage field scanning detector, comprises driving and walking unit, magnetization unit, data acquisition and analytic unit and provides the unit for other unit provide the direct supply of working power.Wherein said magnetization unit is made of armature, permanent magnet and pole shoe, and described permanent magnet is a high-performance rubidium iron boron rare-earth permanent magnet, and described armature and pole shoe are electrical pure iron.Magnetization unit can make detected wallboard local magnetized, and reaches approximate saturated.Pass the bolt hole of sensor box height adjustment bolt from armature, in order to regulate sensor height.In addition, backplate is equipped with in the both sides that surround magnetization unit at detector, plays the effect of reinforcing with the protection magnetization unit.Permanent magnet and pole shoe are fixedly linked in respectively on two lower surfaces of armature successively; Described driving and walking unit are made up of driving wheel, support wheel, mobile roof support, motor, speed reduction unit and motor control box etc.Link between described driving wheel and the described mobile roof support, and this walking support also with magnetization unit in armature for fixedlying connected.Middle part on described armature has through hole, and the height control bolt that connects sensor box therefrom passes, and passes behind the detector loam cake by the locking of sensor box setting nut, the built-in Hall element of described sensor box.Described data acquisition and analytic unit are made up of the Hall element that is positioned at sensor box and corresponding signal amplification circuit, photoimpact scrambler, data collecting card and the industrial computer that presets the magnetic leakage signal analysis software; Wherein, support wheel in the gear of described photoimpact scrambler and described driving and the walking unit links, this photoimpact scrambler passes to the corresponding signal receiving end of data collecting card by signal wire with the pulse signal that produces, and is converted into corresponding mileage by data collecting card; Described Hall element converts detected magnetic leakage signal behind the electric signal to the corresponding signal receiving end that passes to data collecting card after amplifying through signal amplification circuit, be converted into corresponding magnetic flux leakage data by data collecting card, after this, by data collecting card this mileage and magnetic flux leakage data are delivered to the industrial computer that presets the magnetic leakage signal analysis software.
The present invention has following beneficial effect: use this kind stave sheets and climb wall leakage field scanning detector when detecting stave sheets, only this detector is needed horizontal or vertical being placed on the stave sheets that will detect according to detecting, connected system power lead and data line, turn on the power switch, start industrial computer, because driver element is fixed on the magnetization unit, by magnetization unit to detected wallboard magnetic force, motor driving wheel is pressed on the detected wallboard, and the magnetic force of magnetization unit can make detector be adsorbed on the surface of stave sheets.By the driving of driving and walking unit, detector just can be walked voluntarily on storage tank shell then, the speed of detection can be controlled by the control rotating speed of motor.Hall element is gathered magnetic leakage signal in real time in testing process, be sent in the industrial computer by signal transmssion line and handle, industrial computer is gone back the signal that has mileage information that the received code device sends simultaneously, can handle in real time the magnetic leakage signal of tank skin, and can the defective of institute detection position be shown in real time.So far, this kind stave sheets is climbed wall leakage field scanning detector and can be creeped automatically to realize that upper and lower motion scan detects or left and right motion scan detects along stave sheets, move up and down original leakage field scanner realization detection and no longer need operating personnel to set up framing scaffold, satisfied the requirement that stave sheets detects.In addition, this detector is simple in structure, volume is little, simple and efficient to handle, can realize that the online surfaces externally and internally of wallboard scans simultaneously, shows in real time and analyzes, and can form band figure report directly perceived, indicate the defective locations and the order of severity, for the management and the maintenance of storage tank provides decision-making foundation.
Description of drawings:
Fig. 1 is the structural representation of the scanning detector of leakage field described in the utility model.
Fig. 2 is the work synoptic diagram of the scanning detector of leakage field described in the utility model.
Fig. 3 is the sensor and structural representation after armature connects on the scanning detector of leakage field described in the utility model.
Fig. 4 is the electrical schematic diagram that data acquisition and analytic unit and direct supply provide the unit in the utility model.
Fig. 5 is the process flow diagram of the magnetic induction signal analysis software that presets in the industrial computer described in the utility model.
1-storage tank among the figure, 2-detector, 4-signal transmssion line, the 5-industrial computer, 6-computer rack, 7-driving wheel, 8-mobile roof support backplate, 9-support wheel, 10-sensor box, the 11-photoelectric encoder, 12-sensor height setting nut, 13-speed reduction unit, 14-motor, the 15-motor control box, the 30-sensor height is adjusted bolt.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
At first introduce the principle of the utility model institute foundation: the utility model is used is leakage field Non-Destructive Testing principle in the detection technique.Leakage method Non-Destructive Testing and magnetic detection type are the leakage fluxs of overflowing by the metal surface that detection is magnetized seemingly, judge whether defective exists.After the ferrimagnet magnetization of smooth surface flawless, inner zero defect or an assorted folder thing, its magnetic line of force is the magnetic circuit by being made of ferromagnetic material in theory all.If there is defective, because ferromagnetic material is different with the magnetoconductivity of fault location material, the magnetic resistance of fault location is big, can be considered as barrier in magnetic circuit, and then magnetic flux can distort at fault location.The distortion magnetic flux that is as a rule produced is divided into three parts: part 1 is passed defective, and part 2 is walked around crackle through the ferromagnetic material around the crackle, and the 3rd part is then left ferromagnetic materials surface, walks around crackle through air or other medium.And the distortion magnetic flux of this 3rd part is exactly so-called leakage flux, and the probe of magnetic induction just can detected part.The leakage flux signal is corresponding with flaw size, and the peak-peak of magnetic leakage signal and depth of defect keep approximate linear, and the peak-peak spacing of magnetic leakage signal is corresponding with the defective width, and defect length is to almost not influence of magnetic leakage signal.Simultaneously, the amplitude and the waveform of the magnetic leakage signal that obtains from sensor also are subjected to Effect of Environmental.For example: probe is apart from the remanent magnetism of the magnetization, magnetoconductivity and the storage tank bottom plate of the lift-off value on test specimen surface, probe gait of march, tank skin etc.In the time of in actual detected, these parameters change, and their change has influenced the amplitude and the shape of signal.
The utility model just is being based on the inspiration of above-mentioned principle, attempt by inventing a kind of detector, can produce a magnetic field at pipeline outer wall, make tank skin near the magnetic saturation state, when defectiveness exists, magnetic field line can rotate and overflow, and the magnetic signal that spills will be caught by the magnetic induction part in the instrument, thereby realizes determining of defective.In addition, for realizing the automatic walking of instrument on stave sheets, driving mechanism and magnetization unit are realized being fixedly connected, like this, under the magneticaction of magnet, whole detector can be adsorbed on the stave sheets, when the driven by motor driving wheel rotates, whole detector just can be on stave sheets horizontal or vertical having moved.
At first, specifically introduce formation of the present utility model.This kind of stave sheets is climbed wall leakage field scanning detector, and comprise driving and walking unit, data acquisition and analytic unit and provide the unit for the first two unit provides the direct supply of working power, and magnetization unit.Wherein, described magnetization unit is made of armature, permanent magnet and pole shoe, described permanent magnet is a high-performance rubidium iron boron rare-earth permanent magnet, described armature and pole shoe are electrical pure iron, permanent magnet and pole shoe are fixedly linked in respectively on two lower surfaces of armature successively, armature, permanent magnet, pole shoe and detected test specimen form closed magnetic loop, tested ferromagnetic material is carried out local magnetized, and it are saturated to make detected zone reach approximate magnetic.As shown in Figure 2, described driving and walking unit are made up of driving wheel 7, support wheel 9, mobile roof support, motor 14, speed reduction unit 13 and motor control box 15 etc., link between described driving wheel 14 and the described mobile roof support, and this walking support also with magnetization unit in armature for fixedlying connected, like this, just make under the magneticaction of magnetization unit mobile roof support, driving wheel and all be attracted on the stave sheets to motor.
In addition, middle part on described armature has through hole, the height control bolt 30 that connects sensor box 10 therefrom passes, lock by sensor box setting nut 12 after passing the detector loam cake, the built-in Hall element of described sensor box, realized the fine setting of sensor height thus, to adapt to different detection requirements.
Described data acquisition and analytic unit are made up of the Hall element that is positioned at sensor box 10 and corresponding signal amplification circuit, photoimpact scrambler 11, data collecting card and the industrial computer that presets the magnetic leakage signal analysis software.Wherein, support wheel 9 in the gear of described photoimpact scrambler 11 and described driving and the walking unit links, rotation with support wheel, this photoimpact scrambler passes to the corresponding signal receiving end of data collecting card by signal wire with the pulse signal that produces, and is converted into corresponding mileage by data collecting card.Described Hall element converts detected magnetic leakage signal behind the electric signal to the corresponding signal receiving end that passes to data collecting card after amplifying through signal amplification circuit, be converted into corresponding magnetic flux leakage data by data collecting card, after this, by data collecting card this mileage and magnetic flux leakage data are delivered to the industrial computer that presets the magnetic leakage signal analysis software and analyze, its work synoptic diagram as shown in Figure 1.
Described data acquisition and analytic unit are made up of the magnetic induction part that is positioned at sensor box 10 and corresponding signal amplification circuit, photoimpact scrambler, data collecting card and the industrial computer that presets the magnetic induction signal analysis software, wherein, the data acquisition of an embodiment and analytic unit and direct supply the unit is provided electrical schematic diagram as shown in Figure 4.Described data collecting card is the PCI2036 data collecting card, described industrial computer is a 1260T touch-screen type industrial computer, described photoimpact scrambler is an e6a2 type photoimpact scrambler, described magnetic induction part adopts UGN3503 type hall effect sensor, in sensor box a plurality of hall effect sensors of this kind is upwards evenly arranged with parallel detection side along the vertical detection direction.Motor is selected for use and is 12v, the 200w dc brushless motor, but can speed governing and twocouese rotation.In order to make rotating speed of motor can drop to the speed that is suitable for detecting, speed reduction unit selects to have higher ratio of gear turbine and worm reducer casing.During work, after described photoimpact scrambler is noted the revolution of wheel, the pulse signal that produces is passed to the corresponding signal receiving end of data collecting card by signal wire, be converted into corresponding mileage by data collecting card, described magnetic induction part converts detected magnetic leakage signal behind the electric signal to the corresponding signal receiving end that passes to data collecting card after amplifying through signal amplification circuit, be converted into corresponding magnetic flux leakage data by data collecting card, after this, by data collecting card this mileage and magnetic flux leakage data are delivered to the industrial computer that presets the magnetic induction signal analysis software.In the utility model, data acquisition unit mainly realize the magnetic leakage signal data collection, write down, return and put analytical work, gather, store the pulse signal that the photoimpact scrambler produces simultaneously, be converted to corresponding mileage, merge mutually with magnetic flux leakage data, be used for the location of defective.In addition, as shown in Figure 4, direct supply provides the unit that 3 tunnel outputs are provided, and one the tunnel is output as 24V, 1A, is the industrial computer power supply; One the tunnel is output as 5V, 1A, is magnetic induction part and the power supply of photoimpact scrambler; One the tunnel is 12V, and 15A is the drive motor power supply.As shown in the figure, the 12v accumulator changes the 5v module through 12v, gives the power supply of scrambler and sensor; Changeing the 24v module through 12v powers to industrial computer.The 12v accumulator directly to motor power supply, rotates and reverse switch by motor, can realize advancing and falling back of detector.
For adapting to the needs that the Magnetic Flux Leakage Inspecting big data quantity is gathered, adopt the pci bus data acquisition unit.It can form high performance data acquisition system (DAS) with notebook or desktop computer very easily.Adopt novel 12 the A/D conversion chips of the U.S. in this example, design is particular about, the measuring accuracy height, and speed is fast, and it is easy to programme, and it is small and exquisite to have equipment volume, easy to connect, dispense with outer connecting power, peculiar advantage such as plug and play.Can satisfy the needs of the big data quantity high-speed data acquisition that detects needs.
In addition, for being increased in absorption affinity in particular cases, the magnetic holder of dress magnet in can also being fixed with in the side of described speed reduction unit 13.
Claims (3)
1. a stave sheets is climbed wall leakage field scanning detector, comprises driving and walking unit, data acquisition and analytic unit and provides the unit for the first two unit provides the direct supply of working power, it is characterized in that:
Described leakage field scanning detector also comprises a magnetization unit, described magnetization unit is made of armature, permanent magnet and pole shoe, described permanent magnet is a high-performance rubidium iron boron rare-earth permanent magnet, described armature and pole shoe are electrical pure iron, and described permanent magnet and pole shoe are fixedly linked in respectively on two lower surfaces of armature successively;
Described driving and walking unit are made up of driving wheel (7), support wheel (9), mobile roof support, motor (14), speed reduction unit (13) and motor control box etc., link between described driving wheel (7) and the described mobile roof support, and this walking support also with magnetization unit in armature for fixedlying connected;
Middle part on described armature has through hole, and the height control bolt (30) that connects sensor box (10) therefrom passes, and passes behind the detector loam cake by sensor box setting nut (12) locking, the built-in Hall element of described sensor box;
Described data acquisition and analytic unit are made up of the Hall element that is positioned at sensor box (10) and corresponding signal amplification circuit, photoimpact scrambler (11), data collecting card and the industrial computer that presets the magnetic leakage signal analysis software; Wherein, support wheel (9) in the gear of described photoimpact scrambler (11) and described driving and the walking unit links, this photoimpact scrambler passes to the corresponding signal receiving end of data collecting card by signal wire with the pulse signal that produces, and is converted into corresponding mileage by data collecting card; Described Hall element converts detected magnetic leakage signal behind the electric signal to the corresponding signal receiving end that passes to data collecting card after amplifying through signal amplification circuit, be converted into corresponding magnetic flux leakage data by data collecting card, after this, by data collecting card this mileage and magnetic flux leakage data are delivered to the industrial computer that presets the magnetic leakage signal analysis software.
2. a kind of stave sheets according to claim 1 is climbed wall leakage field scanning detector, it is characterized in that: the magnetic holder of dress magnet in described speed reduction unit (13) side is fixed with.
3. a kind of stave sheets according to claim 2 is climbed wall leakage field scanning detector, it is characterized in that: described data collecting card is the PCI2036 data collecting card, described industrial computer is a 1260T touch-screen type industrial computer, described photoimpact scrambler is an e6a2 type photoimpact scrambler, described magnetic induction part adopts UGN3503 type hall effect sensor, in sensor box (10) a plurality of hall effect sensors of this kind is upwards evenly arranged with parallel detection side along the vertical detection direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202787660U CN201548519U (en) | 2009-11-10 | 2009-11-10 | Wall-climbing magnetic leakage scanning detector for storage tank wallboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202787660U CN201548519U (en) | 2009-11-10 | 2009-11-10 | Wall-climbing magnetic leakage scanning detector for storage tank wallboard |
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| CN201548519U true CN201548519U (en) | 2010-08-11 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569142A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气集团公司 | U-shaped detection probe based on AC magnetic field detection and detection method |
| CN104698074A (en) * | 2015-03-25 | 2015-06-10 | 西南石油大学 | Wall-climbing device for magnetic leakage detection on wall defects of storage tank and measurement method |
| CN104880219A (en) * | 2015-05-13 | 2015-09-02 | 温州大学瓯江学院 | Novel wall-climbing positioning remote control device |
| CN107102062A (en) * | 2017-06-07 | 2017-08-29 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of mouse type scanning frame |
| CN107490619A (en) * | 2016-06-12 | 2017-12-19 | 西红柿科技（武汉）有限公司 | A kind of miniature Magnetic Flux Leakage Inspecting instrument probe |
| CN108132296A (en) * | 2017-11-09 | 2018-06-08 | 宁波恒信工程检测有限公司 | A kind of storage tank leakage magnetic detection device |
| CN109324112A (en) * | 2018-10-09 | 2019-02-12 | 河海大学 | A gate detection robot and detection method based on giant magnetoresistive element |
| CN109374727A (en) * | 2018-11-21 | 2019-02-22 | 中国石油大学(北京) | Tank Inspection Robot |
| CN109884171A (en) * | 2019-04-12 | 2019-06-14 | 中国石油化工股份有限公司 | A kind of operation location structure for plate Magnetic Flux Leakage Inspecting |
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2009
- 2009-11-10 CN CN2009202787660U patent/CN201548519U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569142A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气集团公司 | U-shaped detection probe based on AC magnetic field detection and detection method |
| CN104698074A (en) * | 2015-03-25 | 2015-06-10 | 西南石油大学 | Wall-climbing device for magnetic leakage detection on wall defects of storage tank and measurement method |
| CN104880219A (en) * | 2015-05-13 | 2015-09-02 | 温州大学瓯江学院 | Novel wall-climbing positioning remote control device |
| CN107490619A (en) * | 2016-06-12 | 2017-12-19 | 西红柿科技（武汉）有限公司 | A kind of miniature Magnetic Flux Leakage Inspecting instrument probe |
| CN107490619B (en) * | 2016-06-12 | 2021-02-05 | 西红柿科技（武汉）有限公司 | Miniature magnetic leakage detector probe |
| CN107102062A (en) * | 2017-06-07 | 2017-08-29 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of mouse type scanning frame |
| CN108132296A (en) * | 2017-11-09 | 2018-06-08 | 宁波恒信工程检测有限公司 | A kind of storage tank leakage magnetic detection device |
| CN108132296B (en) * | 2017-11-09 | 2021-09-21 | 宁波恒信工程检测有限公司 | Magnetic leakage detection device for storage tank |
| CN109324112A (en) * | 2018-10-09 | 2019-02-12 | 河海大学 | A gate detection robot and detection method based on giant magnetoresistive element |
| CN109374727A (en) * | 2018-11-21 | 2019-02-22 | 中国石油大学(北京) | Tank Inspection Robot |
| CN109374727B (en) * | 2018-11-21 | 2024-02-02 | 中国石油大学(北京) | Storage tank detection robot |
| CN109884171A (en) * | 2019-04-12 | 2019-06-14 | 中国石油化工股份有限公司 | A kind of operation location structure for plate Magnetic Flux Leakage Inspecting |
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Granted publication date: 20100811 Termination date: 20121110 |