CN104502444B - A kind of defect of pipeline scanning equipment - Google Patents
A kind of defect of pipeline scanning equipment Download PDFInfo
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- CN104502444B CN104502444B CN201410718200.0A CN201410718200A CN104502444B CN 104502444 B CN104502444 B CN 104502444B CN 201410718200 A CN201410718200 A CN 201410718200A CN 104502444 B CN104502444 B CN 104502444B
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- scanning
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- connecting plate
- probe
- defect
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Abstract
The invention discloses a kind of defect of pipeline scanning equipment, the scanning equipment includes four sets of driven by quill shaft units, scanning path adjustment structure, magnetic sucking mechanism and adjustable probe mechanism.Often set driven by quill shaft unit is made up of motor, flexible axle, flexible shaft protecting, wheel group and shaft coupling.Scanning path governor motion is made up of four sets of wheel groups and connecting plate.Magnetic sucking mechanism is made up of two opposite polarity permanent magnet groups and armature, and the direction of magnetization of magnet is vertical with conduit axis direction.Adjustable probe mechanism is two level governor motion, uses flat probe.The device uses circumferential magnetization method, can detect the longitudinal defect of pipeline；Adjustable horizontal, which is popped one's head in, is suitable for the scanning of plurality of specifications pipeline；And the device scanning path is adjustable, the kind of drive is novel, and compact-sized, small volume is in light weight, the defects of can be widely applied to pipeline scanning.
Description
Technical field
The invention belongs to non-destructive detecting device field, and in particular to a kind of using Magnetic Flux Leakage Inspecting principle scanning defect of pipeline
Device.
Background technology
Normal life of the pipeline for industrial production and people has extremely important effect, feedwater, draining, heat supply,
Give gas, fully should have been obtained in long distance delivery oil and natural gas, agricultural irrigation, hydraulic engineering and various commercial plants
With.Pipeline is influenceed in long-term operation by temperature, medium, stress and environment, can cause corrosion and material degradation, if
Without effective monitoring or maintenance, very big loss will be caused to enterprise.Importantly, pipe leakage and blast etc. will be right
Environment causes greatly pollution and harm.
Publication number CN 1745985A patent document discloses a kind of heat exchanger for being directed to multiple rows of pipeline composition and is heated
Face pipe detection device.Authorization Notice No. CN 2747088Y patent document discloses a kind of single motor single driving straight wheel type
Small pipeline robot moving mechanism, it is a kind of small diameter pipeline internal robot travel mechanism.Publication number CN103712066 A
Patent document disclose it is a kind of be suitable to the leakage magnetic detection device outside the pipe with industrial pipeline, using axial magnetized mode,
Can only detect transverse defect, and due to using axial magnetized mode, in order to adapt to the pipe detection of different size, it is necessary to
The arcuate probe of different size is changed, it is inconvenient for operation.
The content of the invention
It is an object of the invention to for insufficient existing for above-mentioned detection device, there is provided a kind of defect of pipeline scanning equipment,
The device can detect Longitudinal Defects in Pipes, and the defect of pipeline of plurality of specifications is adapted in the case where that need not change probe
Scanning, while can conveniently realize that the scope of each scanning covers whole pipeline.
A kind of defect of pipeline scanning equipment provided by the invention, it is characterised in that the device includes scanning path regulation machine
Structure, magnetic sucking mechanism, adjustable probe mechanism and four sets of driven by quill shaft units；
The scanning path governor motion is used to change the scanning path of defect of pipeline scanning equipment, realize circumferential scan and
Spiral scanning；Scanning path governor motion is provided with the connection for installing four sets of driven by quill shaft units and magnetic sucking mechanism
Plate；Four sets of driven by quill shaft units are respectively positioned at the surrounding of the connecting plate upper surface of scanning path governor motion, for driving
The motion of whole device；
The magnetic sucking mechanism is arranged on below the connecting plate of scanning path governor motion, is provided with the direction of magnetization and pipe
The vertical magnet of road axis direction；On the one hand magnetic sucking mechanism is used to provide the magnetic field needed for Magnetic Flux Leakage Inspecting, be on the one hand used for
Absorption affinity needed for device along pipe surface progress scanning is provided；
Adjustable probe mechanism is connected with magnetic sucking mechanism, and the scanning to whole defect of pipeline is realized using flat probe.
Compared with prior art, the advantage of the invention is that：
1. scanning equipment uses circumferential magnetization method, the longitudinal defect of pipeline is can detect, and can using circumferential magnetization method
The scanning of defect is carried out using flat probe, probe need not be changed for the pipeline of different size, it is easy to operate.
2. apparatus of the present invention can conveniently change the scanning path of scanning equipment, the pitch that can adjust scanning path can be with
Realize that the scope of each scanning covers whole pipeline, the device thus additionally turned to without increase, to mitigate whole device
Weight and volume.
3. the probe positions of scanning equipment can be adjusted flexibly, probe positions can be adjusted up and down, therefore scanning equipment can fit
Answer the defect inspection demand of plurality of specifications.
4. scanning equipment uses soft axle transmission, whole device is compact-sized.As used soft axle transmission between motor and roller,
Motor can be made to be placed on above connecting plate without being joined directly together with wheel carrier, in the case where not changing motor position, changed
The not motion-affecting transmission in wheel carrier group position so that whole device is compact-sized.
Brief description of the drawings
Fig. 1 is the structural representation of defect of pipeline scanning equipment；
Fig. 2 is that driven by quill shaft unit and scanning path adjust structural representation；
Fig. 3 is wheel group structural representation；
Fig. 4 is magnetic sucking mechanism and adjustable probe schematic diagram；
Fig. 5 a are wheel carrier screwed hole hole system schematic diagram；B is connecting plate through hole hole system schematic diagram；C, d is wheel carrier and connecting plate
Hole system relative position schematic diagram；
Fig. 6 is that the scope of scanning of defect of pipeline scanning equipment can cover the schematic diagram of whole pipeline.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.Herein it should be noted that for
The explanation of these embodiments is used to help understand the present invention, but does not form limitation of the invention.It is in addition, disclosed below
As long as each embodiment of the invention in involved technical characteristic do not form conflict can each other and be mutually combined.
As shown in Figure 1, the defect of pipeline scanning equipment that present example provides includes four sets of driven by quill shaft units 2, swept
Look into track governor motion 3, magnetic sucking mechanism 4 and adjustable probe mechanism 5.
Scanning path governor motion 3 is provided with the connection for installing four sets of driven by quill shaft units 2 and magnetic sucking mechanism 4
Plate, scanning path governor motion 3 are used for the scanning path for changing defect of pipeline scanning equipment, realize that circumferential scan and spiral are swept
Look into.
Four sets of driven by quill shaft units 2 are located at the surrounding of scanning path governor motion 3, for driving the motion of whole device.
Magnetic sucking mechanism 4 is arranged on the lower section of scanning path governor motion 3, is provided with the direction of magnetization and conduit axis side
To vertical magnet.The one side of magnetic sucking mechanism 4 is used to provide the magnetic field needed for Magnetic Flux Leakage Inspecting, is on the one hand used to provide device
The absorption affinity needed for scanning is carried out along pipe surface；
Adjustable probe mechanism 5 is installed with magnetic sucking mechanism 4, and the scanning of defect is carried out using flat probe.
As shown in Figure 2 and Figure 3, driven by quill shaft unit is often covered by motor 25, first, second shaft coupling 23,24, flexible axle 22, soft
Axle sleeve 21 and motor support plate 26 are formed, and motor 25 is connected by screw with motor support plate 26, and motor support plate 26 passes through spiral shell
Nail is fixed on connecting plate 31, and the output shaft of motor 25 is connected through first shaft coupling 23 with flexible axle 22, and flexible axle 22 is logical with wheel group 32
Cross second shaft coupling 24 to be connected, flexible shaft protecting 21 is enclosed on outside flexible axle 22, plays protection flexible axle effect.
Scanning path governor motion 3 is made up of connecting plate 31 and four sets of wheel groups 32, and the wheel carrier 321 of four sets of wheel groups 32 is logical
The surrounding that screw is fixed on connecting plate 31 is crossed, often covers perforate system of institute and the hole of connecting plate 31 on the wheel carrier 321 of wheel group 32 by adjusting
Relative position between system, thus it is possible to vary the angle between the axis and the axis of pipeline 1 of wheel 322, and then change scanning path,
Circumferential scan and spiral scanning can be achieved.
As shown in Figure 3, wheel group 32 is made up of wheel carrier 321, wheel 322 and axletree 324.Wheel 322 and axletree
324 are arranged on wheel carrier 321 by deep groove ball bearing 323.Motor 25 is through flexible axle 22 and the direct drive of wheel of second shaft coupling 24
322 rotate.
By changing the relative position of wheel group 32 and connecting plate 31, it can conveniently change the scanning path of scanning equipment,
The pitch of adjustment scanning path is not more than length of the group of magnets on conduit axis direction, it is possible to achieve the scanning model of each scanning
Enclose the whole pipeline of covering.The device that this mode turns to without the extra control wheel group 32 of increase, alleviate the weight of whole device
Amount and volume.
As shown in Figure 4, magnetic sucking mechanism 4 is connected with connecting plate 31 by bolt and is located at the lower section of connecting plate 31,
It specifically includes armature 41 and two permanent magnet groups 42, and 42 ', two permanent magnet groups 42,42 ' are fixed by screws in armature
41 both sides, armature 41 are connected with connecting plate 31 by bolt 61, nut 63 and thrust ball bearing 62.Two permanent magnet groups
42,42 ' opposite polarity, the direction of magnetization of magnet is vertical with conduit axis direction, and the position of armature 41 can be by rotating spiral shell
Mother about 63 is adjusted, and thrust ball bearing 62 can make regulation lighter；Using circumferential magnetization method, the longitudinal direction of detectable pipeline lacks
Fall into.The pitch of adjustment scanning path is not more than length of the group of magnets on conduit axis direction,
Adjustable sonde configuration 5 is connected by screw with the armature 41 in magnetic sucking mechanism 4, and is located at two permanent magnetics
Between iron group 42,42 '.Adjustable sonde configuration 5 specifically includes probe connecting plate 51, probe socket 52, spring 53 and flat probe 54.
Mounting hole is provided with probe connecting plate 51, is connected by screw 64 with armature 52, probe connecting plate 51 passes through spiral shell with probe socket 52
Nail connects, and plane surrounding is provided with circular hole on flat probe 54, and circular hole is connected built with spring 53 by spring 53 with probe socket 52.
Flat probe 54 is provided with waist type groove in two sides, is connected by holding screw with probe socket 52.Pass through adjusting screw 64 and nut 63
Position-adjustable flat probe 54 position, and then be suitable for the scanning of different size pipeline.Defect is carried out using flat probe
Scanning, probe need not be changed for the pipeline of different size, it is easy to operate.
The present invention can change probe positions, and thrust ball axle by changing the nut of connection armature 41 and connecting plate 31
Holding 62 use makes this regulation lighter；The position of probe connecting plate 51 and the screw of armature 41 can also be connected by changing
Put change probe positions.
As shown in Figure 5, the screwed hole hole system schematic diagram opened on wheel carrier 321 is shown in a, and b is shown to be shown with a figures
Screwed hole corresponding to through hole hole system schematic diagram on the relevant position of connecting plate 31.The screwed hole 1,5 on wheel carrier 321 is shown in c,
9 overlap with the axis of through hole 1 ', 5 ', 9 ' on connecting plate 31 respectively.Now the scanning path of the scanning equipment is circumferential scan.Wheel
After the axis in the threadingly hole 9 of group 32 rotates a certain angle, wheel group 32 and the hole system position view of connecting plate 31, now wheel carrier
On screwed hole 3,7,9 respectively with the axis of through hole on connecting plate 3 ', 7 ', 9 ' overlap.Now the scanning path of the scanning equipment is
Spiral scanning.
According to the scanning path adjusting method shown in accompanying drawing 5, the scanning scope that single scanning can be achieved covers whole pipeline,
Adjusting method is simple, it is not necessary to extra governor motion, while the position of motor 25 is constant during regulation.
As shown in Figure 6, magnetic box 42 is L along conduit axis direction length, and line t is for center probe in scanning equipment in spiral shell
Scanning path during scanning is revolved, S is the pitch of the scanning path, as shown in Figure 6, and when S is not more than L, then the defect scanning
The scanning scope of scanning of device can cover whole pipeline.
The course of work of the invention device is as follows：First according to the position of each part of device and annexation before detection
By its correct helical angle assembled, suitable scanning path is secondly determined according to detection demand, and then change connecting plate and wheel carrier
Relative position and be screwed, then the device is placed on pipeline, adjustment magnetizing assembly and probe to correct position,
The stray field signal that the defects of below flat probe is formed will be detected by flat probe.Power drives device fortune is provided to motor
Dynamic, the stray field signal formed with the movement of whole device, the defects of below flat probe scanning path will be detected by flat probe
Arrive, by analyzing the signal received during flat probe scanning, you can obtain defect of pipeline situation, and then complete defect of pipeline
Scanning.It must be noted that the scanning equipment is not merely applied to the scanning of the defects of pipeline, for in-service cable and horizontal
The scanning of the defects of storage tank, the device are equally applicable.
Described above is presently preferred embodiments of the present invention, but the present invention should not be limited to the embodiment and accompanying drawing institute
Disclosure.So every do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, guarantor of the present invention is both fallen within
The scope of shield.
Claims (5)
1. a kind of defect of pipeline scanning equipment, it is characterised in that the device includes scanning path governor motion (3), permanent magnetic suck
Mechanism (4), adjustable probe mechanism (5) and four sets of driven by quill shaft units (2)；
The scanning path governor motion (3) is used to change the scanning path of defect of pipeline scanning equipment, realize circumferential scan and
Spiral scanning；Scanning path governor motion (3) is provided with for installing four sets of driven by quill shaft units (2) and magnetic sucking mechanism
(4) connecting plate (31)；Four sets of driven by quill shaft units (2) are located at the connecting plate of scanning path governor motion (3) respectively
(31) surrounding, for driving the motion of whole device；
The magnetic sucking mechanism (4) is arranged on below the connecting plate (31) of scanning path governor motion (3), is provided with magnetization side
To the magnet vertical with conduit axis direction；Magnetic sucking mechanism (4) is on the one hand used to providing magnetic field needed for Magnetic Flux Leakage Inspecting, and one
Aspect is used to provide the absorption affinity needed for device along pipe surface progress scanning；
Adjustable probe mechanism (5) is connected with magnetic sucking mechanism (4), is realized using flat probe and whole defect of pipeline is swept
Look into；
The scanning path governor motion (3) is made up of the connecting plate (31) and four sets of wheel groups (32), four sets of wheel groups
(32) wheel carrier (321) is fixed on the surrounding of connecting plate (31), by the relative position for changing wheel group (32) and connecting plate (31)
Put, can conveniently change the scanning path of scanning equipment；
Wheel group (32) is made up of wheel carrier (321), wheel (322) and axletree (324), and wheel (322) and axletree (324) are logical
Deep groove ball bearing (323) is crossed on wheel carrier (321), motor (25) directly drives through flexible axle (22) and second shaft coupling (24)
Wheel (322) rotates, be provided with wheel carrier (321) with the hole system that hole system matches on connecting plate (31), by adjusting its relative position,
The angle between the axis of wheel (322) and pipeline (1) axis can be changed, and then change scanning path, realize circumferential scan
With spiral scanning.
2. defect of pipeline scanning equipment according to claim 1, it is characterised in that the driven by quill shaft unit is by motor
(25), first, second shaft coupling (23,24), flexible axle (22), flexible shaft protecting (21) and motor support plate (26) composition, motor (25)
It is connected with motor support plate (26), motor support plate (26) is fixed on connecting plate (31), and motor (25) output shaft is through first
Axle device (23) is connected with flexible axle (22), and flexible axle (22) is connected with wheel group (32) by second shaft coupling (24), flexible shaft protecting (21)
It is outside to be enclosed on flexible axle (22), plays protection flexible axle effect.
3. defect of pipeline scanning equipment according to claim 1 or 2, it is characterised in that magnetic sucking mechanism (4) includes rank
Iron (41) and two permanent magnet groups (42,42 '), two permanent magnet groups (42,42 ') are fixed on the both sides of armature (41), rank
Iron (41) is connected with connecting plate (31) by bolt (61), nut (63) and thrust ball bearing (62), two permanent magnet groups
The opposite polarity of (42,42 '), the position of armature (41) are adjusted up and down by rotating nuts (63), and thrust ball bearing (62) makes tune
Section is lighter；The direction of magnetization of magnet is vertical with conduit axis direction, uses circumferential magnetization mode to detect the longitudinal direction of pipeline
Defect, the pitch for adjusting scanning path is less than or equal to length of the group of magnets on conduit axis direction, to realize each scanning
Scanning scope covers whole pipeline.
4. defect of pipeline scanning equipment according to claim 1 or 2, it is characterised in that adjustable probe mechanism (5) with forever
Armature (41) connection in magnetic suck mechanism (4), and between two permanent magnet groups (42,42 ').
5. defect of pipeline scanning equipment according to claim 1 or 2, it is characterised in that adjustable probe mechanism (5) includes
Pop one's head in connecting plate (51), probe socket (52), spring (53) and flat probe (54), be provided with connecting plate (51) of popping one's head in for connection
The mounting hole of armature (41), probe connecting plate (51) are connected with probe socket (52), and plane surrounding is provided with circular hole on flat probe (54),
Circular hole is connected built with spring (53) by spring (53) with probe socket (52)；Flat probe (54) is provided with waist type groove in two sides,
It is connected by holding screw with probe socket (52)；By the position of adjusting screw (64) and nut (63) to adjust flat probe (54)
Position, and then adapt to different size pipeline scanning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410718200.0A CN104502444B (en) | 2014-12-01 | 2014-12-01 | A kind of defect of pipeline scanning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410718200.0A CN104502444B (en) | 2014-12-01 | 2014-12-01 | A kind of defect of pipeline scanning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104502444A CN104502444A (en) | 2015-04-08 |
| CN104502444B true CN104502444B (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410718200.0A Expired - Fee Related CN104502444B (en) | 2014-12-01 | 2014-12-01 | A kind of defect of pipeline scanning equipment |
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| CN (1) | CN104502444B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546359B (en) * | 2016-01-20 | 2017-10-03 | 合肥中大检测技术有限公司 | The online permanent magnetic detection device of portable pressure-bearing industrial pipeline |
| CN109580785A (en) * | 2017-09-29 | 2019-04-05 | 上海金艺检测技术有限公司 | Scanning tooling and method for turbine blade root defect |
| CN109100418B (en) * | 2018-08-21 | 2024-03-22 | 华中科技大学 | Scanning device for pulse eddy current detection of non-ferromagnetic pipeline |
| CN111766293A (en) * | 2019-04-02 | 2020-10-13 | 中国石油天然气集团有限公司 | Multi-specification continuous pipe defect detection device |
| CN110220969B (en) * | 2019-06-28 | 2024-04-12 | 苏州大学 | Magnetic flux leakage detection probe with high sensitivity |
| CN110295544B (en) * | 2019-07-29 | 2024-02-06 | 武汉冠油科技有限公司 | Rotary crawling detector for detecting external cross section shape of bridge inhaul cable |
| CN113588775A (en) * | 2020-04-30 | 2021-11-02 | 新疆金风科技股份有限公司 | Detection device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8606564D0 (en) * | 1986-03-17 | 1986-04-23 | Atomic Energy Authority Uk | Magnetic discontinuity detection |
| CN100503342C (en) * | 2007-09-29 | 2009-06-24 | 华中科技大学 | Wheeled type permanent magnetism adsorption pipeline creeping robot |
| US20110234212A1 (en) * | 2010-03-29 | 2011-09-29 | Benoit Lepage | Magnetic flux leakage inspection device |
| CN101915339B (en) * | 2010-07-29 | 2012-09-12 | 中国科学院深圳先进技术研究院 | Pipeline robot |
| GB201105193D0 (en) * | 2011-03-29 | 2011-05-11 | Silverwing Uk Ltd | Methods and apparatus for the inspection of plates and pipe walls |
| CN102507874B (en) * | 2011-11-08 | 2014-09-24 | 华中科技大学 | Detecting device of storage tank soleplate |
| CN103712066B (en) * | 2013-12-20 | 2016-04-13 | 华中科技大学 | A kind ofly be suitable for the outer leakage magnetic detection device of the pipe of industrial pipeline |
| CN204269599U (en) * | 2014-12-01 | 2015-04-15 | 华中科技大学 | A kind of defect of pipeline scanning equipment |
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2014
- 2014-12-01 CN CN201410718200.0A patent/CN104502444B/en not_active Expired - Fee Related
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| CN104502444A (en) | 2015-04-08 |
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