CN203672833U - Magnetic flux leakage detecting device for defects of underground oil storage tanks - Google Patents
Magnetic flux leakage detecting device for defects of underground oil storage tanks Download PDFInfo
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- CN203672833U CN203672833U CN201320840052.0U CN201320840052U CN203672833U CN 203672833 U CN203672833 U CN 203672833U CN 201320840052 U CN201320840052 U CN 201320840052U CN 203672833 U CN203672833 U CN 203672833U
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Abstract
The utility model relates to a magnetic flux leakage detecting device for the defects of underground oil storage tanks and aims to provide the detecting device, which can effectively solve the problems of incapability of detecting the underground oil storage tanks, low magnetization intensity and fuzzy calibration data of the existing magnetic flux leakage detecting device. The utility model adopts the technical scheme as follows: the magnetic flux leakage detecting device for the defects of the underground oil storage tanks is characterized by comprising a main body helm and an electric control cabinet, wherein the main body helm comprises a curvature-adjustable magnetization detecting system, an automatic traveling system and a signal acquiring system.
Description
Technical field
The utility model relates to buried tank detection technique field, specifically a kind of buried tank defect and magnetic leakage detection device.
Background technology
At present, approximately there are 300,000 buried tanks in China, all adopts direct buried mode to arrange, owing to being subject to the impact of underground complex working condition, the defects such as that storage tank material inevitably there will be is aging, corrosion, thus the leakage of medium very easily caused, cause serious economy and social loss.Prevent now the measure of storage tank leakage accident mainly to comprise preservative treatment and periodic inspection, but due to the restriction of examined means, underground oil storage tank skin damage status majority can not definitely be differentiated and locate, and often causes blindly excavation, blindness to scrap, keep in repair unnecessary losses such as lacking science.The leakage magnetic field intensity of the ferromagnetic material surface of the work that Magnetic Flux Leakage Inspecting is magnetized by measurement judges the size of workpiece, defect, has higher safety and reliability, and is easy to realize the robotization detecting.
Because buried tank entrance is narrow and small, inner space is little, detection person and checkout equipment turnover are inconvenient, and buried tank non-tablet, often with certain curvature, and existing Magnetic Flux Leakage Testing Instrument is often flat, each magnetization configuration and sensor are arranged in same plane, therefore can not effectively magnetize curved tank skin, and the magnetization is not high, easily cause collection signal data distortion, location defect position and quantitatively defect size effectively.Meanwhile, because magnetization configuration is three groups of independently structures, make to have certain interval between sensor, easily cause the problems such as nominal data distortion.
Utility model content
The utility model object is the deficiency overcoming in above-mentioned background technology, a kind of buried tank defect and magnetic leakage detection device is provided, can effectively solves that existing leakage magnetic detection device can not detect buried tank, the magnetization is not high, the problem of nominal data distortion.
For realizing above object, the utility model has adopted following technical scheme:
Buried tank defect and magnetic leakage detection device, is characterized in that: described pick-up unit comprises main body important department and electric control box;
Described main body important department comprises the adjustable magnetization detection system of curvature, running gear and signal acquiring system automatically;
A) the adjustable magnetization detection system of curvature, comprises the adjustable testing agency of magnetization configuration and curvature; Described magnetization configuration comprises the left armature, center armature and the right armature that are arranged side by side, and the bottom surface of each armature is all fixed with at least one permanent magnet, and the bottom surface of each permanent magnet is fixed with a pole shoe; Described curvature is adjustable testing agency comprises be separately fixed at left armature front end and rear end two left web joints, be separately fixed at center armature front end and rear end two center connecting plates, be separately fixed at two right web joints of right armature front end and rear end, each center connecting plate is connected by latch with right web joint with the left web joint of same one end respectively;
B) automatic running gear, comprise be positioned at three armature fronts electric machine support, be arranged on motor on electric machine support, by motor-driven motor wheel, six castors, be hinged on the hinged air spring of handle on electric machine support and upper end and handle; Described electric machine support is hinged by side plate and described center armature; Described six castors are arranged on respectively on two left web joints, two right web joints and two center connecting plates; Castor rotating shaft on the center connecting plate of the lower end of described air spring and armature rear end, center is hinged;
C) signal acquiring system, comprise be separately fixed at left armature, center armature and right armature bottom surface three sensor boxes, be arranged on the amplification case on handle and be arranged on the scrambler of left armature rear end, described three sensor boxes and scrambler are all connected with amplification case, and amplification case and described motor are all connected with electric control box.
Described scrambler is arranged on the rear end of left armature by scrambler frame, in the castor rotating shaft of left armature rear side, gear is installed, and this scrambler engages to realize the collection of real time data by gear 13 and the gear in castor rotating shaft.
To glue iron glue by PVC bonding with the permanent magnet of self bottom surface respectively for described left armature, center armature, right armature; It is bonding that the pole shoe of each permanent magnet and self bottom surface glues iron glue by PVC.
The both sides of the described center connecting plate first half respectively by jointed shaft with hinged with the left web joint of one end, right web joint; The both sides of center connecting plate Lower Half are shaped with the arc adjustment hole being arranged symmetrically with, two arc adjustment holes are respectively taking two jointed shafts of the center connecting plate first half as the center of circle, in each arc adjustment hole, be inserted with respectively a bearing pin, center connecting plate is connected with left web joint, right web joint respectively by two bearing pins.
Described electric control box comprises casing and is arranged on industrial computer, data collecting card, the accumulator in casing, and casing is provided with the main control wire terminal, Electric Machine Control wire terminal, battery main switch, the detection starting switch that are connected with industrial computer; Described main control wire terminal is connected with described amplification case by Aviation Connector and wire; Described Electric Machine Control wire terminal is connected with described motor by Aviation Connector and wire.
The beneficial effects of the utility model are: the utility model has designed split type buried tank leakage magnetic detection device, main body important department and electric main control box are separated, make Magnetic Flux Leakage Testing System easy to use, owing to thering is the adjustable testing agency of curvature, make can relatively rotate between three armature in magnetization configuration, thereby can detect the buried tank with different curvature, can effectively magnetize tank skin, improve the magnetization of tested tank skin, therefore can greatly improve the detection quality of buried tank defect; Meanwhile, be to improve the accuracy of nominal data, make for sensor arrangement inhomogeneously, adopt innovatively the method for separately demarcating successively, improve the accuracy of demarcating.
Brief description of the drawings
Fig. 1 is perspective view of the present utility model.
Fig. 2 is the main TV structure schematic diagram of the adjustable magnetization detection system of curvature.
Fig. 3 is the right TV structure schematic diagram (omission scrambler) of the adjustable magnetization detection system of curvature.
Fig. 4 is the main TV structure schematic diagram of electric control box.
Fig. 5 is workflow diagram of the present utility model.
Fig. 6 is three groups of independence calibration maps of the present utility model.
In figure, have: amplification case support 1, amplification case 2, handle 3, air spring top connection 4, left armature 5-1, center armature 5-2, right armature 5-3, air spring 6, scrambler frame 7, left web joint 8, scrambler 9, side plate 10, electric machine support 11, motor 12, gear 13, center connecting plate 14, arc adjustment hole 14-1, 14-6, bearing pin 14-2, 14-5, jointed shaft 14-3, 14-4, motor wheel 15, right web joint 16, permanent magnet 17, pole shoe 18, sensor box 19, air spring lower sub 20, castor 21, electric control box 22, industrial computer 23, main control wire terminal 24, Electric Machine Control wire terminal 25, battery main switch 26, detect starting switch 27, wire 28, Aviation Connector 29.
Embodiment
Below in conjunction with instructions figure, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 1, buried tank defect and magnetic leakage detection device described in the utility model comprises main body important department and electric control box 22.
Described electric control box 22 comprises casing and is arranged on industrial computer 23, data collecting card (NI capture card), the accumulator in casing.Data collecting card is connected with industrial computer, and accumulator, to industrial computer, data collecting card power supply, is provided with battery main switch 26 between accumulator and industrial computer.Casing is provided with the main control wire terminal 24, Electric Machine Control wire terminal 25, the detection starting switch 27 that are connected with data collecting card; Described main control wire terminal is connected with described amplification case by Aviation Connector 29 and wire 28; Described Electric Machine Control wire terminal is connected with described motor by Aviation Connector and wire.
Can as required, above-mentioned buried tank defect and magnetic leakage detection device be done further optimize or improve.
Main body important department comprises the adjustable magnetization detection system of curvature, automatic running gear and signal acquiring system.
The magnetization detection system that curvature is adjustable, comprises the adjustable testing agency of magnetization configuration and curvature.Described magnetization configuration comprises three armature that are arranged side by side, and is from left to right followed successively by left armature 5-1, center armature 5-2 and right armature 5-3, and the bottom surface of each armature is all fixed with at least one permanent magnet 17, and the bottom surface of each permanent magnet is fixed with a pole shoe 18.To glue iron glue by PVC bonding with the permanent magnet of self bottom surface respectively for described left armature, center armature, right armature; It is bonding that the pole shoe of each permanent magnet and self bottom surface glues iron glue by PVC.
As shown in Figure 3, the adjustable testing agency of described curvature comprise be separately fixed at left armature front end and rear end two left web joints 8, be separately fixed at center armature front end and rear end two center connecting plates 14, be separately fixed at two right web joints 16 of right armature front end and rear end.
At the front end of three armature, the left web joint 8 that passes on left jointed shaft 14-3 and three armature front ends of the first half of center connecting plate 14 is hinged, and the right side of the first half of center connecting plate 14 is hinged by the right web joint 16 of jointed shaft 14-4 and three armature front ends.The left side of center connecting plate Lower Half and right side are shaped with the arc adjustment hole (having certain curvature) being arranged symmetrically with, the arc adjustment hole 14-1 in left side is taking the jointed shaft 14-3 in above-mentioned center connecting plate left side as the center of circle, the arc adjustment hole 14-6 on right side is taking the jointed shaft 14-4 on above-mentioned center connecting plate right side as the center of circle, in each arc adjustment hole, be inserted with respectively a bearing pin, the bearing pin 14-2 that passes on left of center connecting plate is connected with left web joint, and the right side of center connecting plate is connected with right web joint by another bearing pin 14-5.The center connecting plate of three armature rear ends and left web joint, right web joint connected mode are identical with three armature front ends.Because two arc adjustment holes are respectively taking two jointed shafts as prototype, therefore two bearing pins rotatable certain angle in two arc adjustment holes respectively, make can occur between three armature the deflection of certain angle, thereby adapt to the tank skin of different curvature, realize curvature adjustable function.
Automatically running gear, comprise be positioned at three armature fronts electric machine support 11, be arranged on motor 12 on electric machine support, by motor-driven motor wheel 15, six castors, be hinged on handle 3 on electric machine support and upper end by the hinged air spring 6 of air spring top connection 4 and handle.Described electric machine support is hinged by two blocks of side plates 10 and described center armature.Described six castors are arranged on respectively on two left web joints 8, two right web joints 16 and two center connecting plates 14; The lower end of described air spring is hinged by the castor rotating shaft on the center connecting plate of armature rear end, air spring lower sub 20Yu center.Driving by motor wheel 15 drives castor 21, thereby whole magnetization testing agency is normally walked.
Signal acquiring system, comprise that three sensor box 19(that are separately fixed at left armature, center armature and right armature bottom surface adopt Hall element boxes, inside is provided with Hall element), the scrambler 9(that is arranged on the amplification case 2 on handle and is arranged on left armature rear end adopts gear scrambler).Amplification case is fixed on arm by amplification case support 1.Described three sensor boxes and scrambler are all connected to carry out data transmission communicates by letter with amplification case, and amplification case and described motor are all connected to carry out data transmission and communicate by letter with electric control box.Described scrambler is arranged on the rear end of left armature by scrambler frame 7, in the castor rotating shaft of left armature rear side, gear is installed, and this scrambler engages to realize the collection of real time data by gear and the gear in castor rotating shaft.Between sensor box 19 and each armature, be bolted, tank skin magnetized and rely on the Hall element being arranged in sensor box 19 to gather defect tank skin coherent signal by three groups of magnetization configuration, amplify and conduct to industrial computer analysis by wire transmission to the pre-amplification circuit in amplification case 2.
As shown in Figure 1 and Figure 4, the original signal that amplification case 2 is come Hall element collection is carried out preliminary processing and amplification, by main control wire terminal 24, coherent signal is transferred in electric control box and is further processed.Motor outputting drive voltage is given in Electric Machine Control wire terminal 25, first presses battery main switch 26, and to whole system, for electric preheating, secondly Pen-down detection starting switch 27 starter motors 12 carry out testing.
As shown in Figure 5, buried tank defect and magnetic leakage testing process is: first magnetization configuration is magnetized tank skin defect to be detected, by the Hall element in sensor box, the defect magnetic flux leakage field collecting is converted into faint defect and magnetic leakage electric signal, rely on scrambler, amplifying circuit, by wire, signal is transferred to data collecting card, and further transfer to industrial computer, by Correlation method for data processing software, implementation pattern identification, the functions such as color ribbon figure and map report.
As shown in Figure 6, carry out respectively the independent calibration maps afterwards of demarcating in three groups of left, center, rights, the data of demarcating for three times in Fig. 6 are variant, if only once demarcated, obviously can make resultant error larger, can accurately not detect defect, and after independently demarcating through three times, can effectively solve the problem of the nominal data distortion inhomogeneous caused due to sensor arrangement.
The utility model is considered testing environment and the face shaping characteristic of buried tank, has designed the leakage magnetic detection device that main body important department and electric control box are separated from each other; According to the inner pot wall construction feature of buried tank, design the adjustable magnetizable body of curvature, and selected applicable magnetic circuit form, calculate the basic parameter of magnetization configuration by magnetic conductance method, and be combined with finite element analysis and carry out the optimal design of magnetization configuration; In conjunction with the optimum velocity of magnetization configuration in Magnetic Flux Leakage Inspecting process, select suitable direct current generator and speed reduction unit, be equipped with corresponding motor wheel and castor; Design multiple sensor arraies (being multiple sensor boxes), between array by physical construction can spacing, curvature; Select suitable data data collecting card and scrambler, signals collecting reasonable in design and transmission circuit; Owing to having certain interval between magnetization configuration left, center, right, make sensor arrangement inhomogeneous, so adopt the method (data processing method is identical with existing leakage magnetic detection device) that scaling board is separately demarcated, each sensor box gathers respectively the magnetization data of an armature below, thereby improves the accuracy of demarcating.
In the utility model, described industrial computer, data collecting card (or overall outsourcing electric control box), Hall element box, amplification case, the equal buyable of scrambler obtain.
Claims (5)
1. buried tank defect and magnetic leakage detection device, is characterized in that: described pick-up unit comprises main body important department and electric control box (22);
Described main body important department comprises the adjustable magnetization detection system of curvature, running gear and signal acquiring system automatically;
A) the adjustable magnetization detection system of curvature, comprises the adjustable testing agency of magnetization configuration and curvature; Described magnetization configuration comprises the left armature (5-1), center armature (5-2) and the right armature (5-3) that are arranged side by side, and the bottom surface of each armature is all fixed with at least one permanent magnet (17), and the bottom surface of each permanent magnet is fixed with a pole shoe (18); Described curvature is adjustable testing agency comprises be separately fixed at left armature front end and rear end two left web joints (8), be separately fixed at center armature front end and rear end two center connecting plates (14), be separately fixed at two right web joints (16) of right armature front end and rear end, each center connecting plate is connected by latch with right web joint with the left web joint of same one end respectively;
B) automatic running gear, comprise be positioned at three armature fronts electric machine support (11), be arranged on motor (12) on electric machine support, by motor-driven motor wheel (15), six castors (21), be hinged on the hinged air spring (6) of handle (3) on electric machine support and upper end and handle; Described electric machine support is hinged by side plate (10) and described center armature; Described six castors are arranged on respectively on two left web joints (8), two right web joints (16) and two center connecting plates (14); Castor rotating shaft on the center connecting plate of the lower end of described air spring and armature rear end, center is hinged;
C) signal acquiring system, comprise be separately fixed at left armature, center armature and right armature bottom surface three sensor boxes (19), be arranged on the amplification case (2) on handle and be arranged on the scrambler (9) of left armature rear end, described three sensor boxes and scrambler are all connected with amplification case, and amplification case and described motor are all connected with electric control box.
2. buried tank defect and magnetic leakage detection device according to claim 1, it is characterized in that: described scrambler is arranged on the rear end of left armature by scrambler frame, in the castor rotating shaft of left armature rear side, gear is installed, this scrambler engages to realize the collection of real time data by gear (13) and the gear in castor rotating shaft.
3. buried tank defect and magnetic leakage detection device according to claim 1 and 2, is characterized in that: to glue iron glue by PVC bonding with the permanent magnet of self bottom surface respectively for described left armature, center armature, right armature; It is bonding that the pole shoe of each permanent magnet and self bottom surface glues iron glue by PVC.
4. buried tank defect and magnetic leakage detection device according to claim 3, is characterized in that: the both sides of the described center connecting plate first half respectively by jointed shaft (14-3,14-4) with hinged with the left web joint (8) of one end, right web joint (16); The both sides of center connecting plate Lower Half are shaped with the arc adjustment hole (14-1,14-6) being arranged symmetrically with, two arc adjustment holes are respectively taking two jointed shafts of the center connecting plate first half as the center of circle, in each arc adjustment hole, be inserted with respectively a bearing pin (14-2,14-5), center connecting plate is connected with left web joint, right web joint respectively by two bearing pins.
5. buried tank defect and magnetic leakage detection device according to claim 4, it is characterized in that: described electric control box comprises casing and be arranged on industrial computer (23), data collecting card, the accumulator in casing, casing is provided with the main control wire terminal (24), Electric Machine Control wire terminal (25), the battery main switch (26) that are connected with industrial computer, detects starting switch (27); Described main control wire terminal is connected with described amplification case by Aviation Connector (29) and wire (28); Described Electric Machine Control wire terminal is connected with described motor by Aviation Connector and wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320840052.0U CN203672833U (en) | 2013-12-18 | 2013-12-18 | Magnetic flux leakage detecting device for defects of underground oil storage tanks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320840052.0U CN203672833U (en) | 2013-12-18 | 2013-12-18 | Magnetic flux leakage detecting device for defects of underground oil storage tanks |
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| CN203672833U true CN203672833U (en) | 2014-06-25 |
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| CN201320840052.0U Expired - Fee Related CN203672833U (en) | 2013-12-18 | 2013-12-18 | Magnetic flux leakage detecting device for defects of underground oil storage tanks |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698390A (en) * | 2013-12-18 | 2014-04-02 | 浙江省特种设备检验研究院 | Defect and magnetic leakage detection device for underground oil storage tank |
| CN108254432A (en) * | 2017-08-04 | 2018-07-06 | 西红柿科技（武汉）有限公司 | A kind of novel diameter reducing steel tube truss probe |
-
2013
- 2013-12-18 CN CN201320840052.0U patent/CN203672833U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698390A (en) * | 2013-12-18 | 2014-04-02 | 浙江省特种设备检验研究院 | Defect and magnetic leakage detection device for underground oil storage tank |
| CN108254432A (en) * | 2017-08-04 | 2018-07-06 | 西红柿科技（武汉）有限公司 | A kind of novel diameter reducing steel tube truss probe |
| CN108254432B (en) * | 2017-08-04 | 2021-10-01 | 西红柿科技（武汉）有限公司 | Reducing steel pipe magnetic leakage test probe |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20201218 |