CN106996955A - A kind of magnetic memory detection device for curved surface - Google Patents
A kind of magnetic memory detection device for curved surface Download PDFInfo
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- CN106996955A CN106996955A CN201610051146.8A CN201610051146A CN106996955A CN 106996955 A CN106996955 A CN 106996955A CN 201610051146 A CN201610051146 A CN 201610051146A CN 106996955 A CN106996955 A CN 106996955A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
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Abstract
The present invention is applied to field of non destructive testing, a kind of magnetic memory detection device for curved surface is provided, including circular arc bottom plate, the circular arc bottom plate is up to provided with an engagement sleeves component for carrying slot less, an activity detection part is inserted with wherein at least one slot, the activity detection part includes the expansion plate of an insertion slot, the expansion plate rear end is provided with perforate, elastic parts is also equipped with expansion plate perforate, the flexible front edge of board is provided with steamboat and Magnetic Memory sensor probe, the minimum point of a little higher than steamboat of minimum point of the Magnetic Memory sensor probe, the curved plate centre position is also vertically and fixedly provided with dolly, shaft position sensor and radial displacement transducer are installed on the dolly.In Magnetic memory testing, the lift-off value between Magnetic Memory sensor probe and device under test curved surface immobilizes, it is ensured that accuracy in detection.The radial positioning of dolly in measurement is solved the problems, such as by radial displacement transducer simultaneously.Other present apparatus structure is consolidated very much, and at work, twisting angle is greatly reduced Magnetic Memory sensor probe, and the data drawn are relatively reliable.
Description
Technical field
The invention belongs to technical field of nondestructive testing, more particularly to a kind of magnetic memory detection device for curved surface.
Background technology
Ferromagnetic material when in use, spontaneous manetization can be produced under plus load or stress repeatedly, this
Natural phenomena is defined as metal magnetic memory (Metal Magnetic Memory).Hereafter Magnetic Memory is employed
In field of non destructive testing, while the detecting instrument of various design forms occurs in succession.
There is the pipe detection device of fixed curvature at present, the tank body detection means for also having fixed curvature.But this
The device designed a bit is only applicable to the detection object of certain fixation, does not possess versatility typically.Meanwhile, it is different
Design, the difference of object is detected according to it, the Movement consistency of also one Magnetic Memory sensor probe asks
Topic, that is, the angle that the possibility popped one's head in the detection occurs are twisted and variation issue.This problem is for magnetic
It is most important for memory detection, because what is measured in Magnetic memory testing is the spontaneous leakage field in surface of device under test
The size and Orientation of field (Self-Magnetic Leakage Field, SMLF), the angle popped one's head in Magnetic Memory
In the case of changing, the size and Orientation data drawn, it is unreliable all to become.
The curved surface scanning detection of boiler or storage tank be it is actually detected in a problem frequently encountering.This
In the case of because its surface imperfection to be detected, displacement transducer record can not accurate recording displacement data,
So often there is missing inspection situation.It is also a problem that the display of its data simultaneously, which reappears, due to lacking Magnetic Memory
The corresponding positional information of data, causes to be difficult to correspond between data and actual device under test.
The surfaces externally and internally detection of variable diameters pipeline is actually detected middle another problem through being commonly encountered.General shows
Field detection means, is designed using wheelbarrow, and Plantago minuta installs a few probe, to be checked to be close to as far as possible
Survey curved surface.In this case, by taking variable diameters pipeline as an example, axial displacement energy is recorded.But
In the motion process of detection means, radial displacement is just ignored, and this is equally unfavorable for the data obtained and to be measured
, often there is position deviation in the one-to-one corresponding of pipeline, and puzzlement is brought to testing staff.
The content of the invention
In view of the above problems, it is an object of the invention to provide a kind of magnetic memory detection device for curved surface,
Aim to solve the problem that existing Curved dectection device does not have versatility and the larger technical problem of testing result deviation.
The present invention is adopted the following technical scheme that：
The magnetic memory detection device for curved surface includes one piece of circular arc bottom plate, and the circular arc bottom plate is up to few
It is provided with what is be communicated with an engagement sleeves component for carrying slot, the circular arc bottom plate and engagement sleeves component
An activity detection part is inserted with perforate, wherein at least one slot, the activity detection part includes one
The expansion plate of slot is inserted, the expansion plate rear end is provided with perforate, expansion plate perforate and is also equipped with elastic group
Part, for the expansion plate, the movement in the slot is provided before restoring force, the expansion plate elastic parts
End is provided with steamboat and Magnetic Memory sensor probe, a little higher than institute of minimum point of the Magnetic Memory sensor probe
The minimum point of steamboat is stated, the curved plate centre position is also vertically and fixedly provided with dolly, pacified on the dolly
Equipped with for record dolly and bottom plate direction of advance displacement shaft position sensor and for record dolly and
The radial displacement transducer of bottom plate radial displacement, the shaft position sensor and radial displacement transducer are vertical
Install.
Further, the elastic parts is adjustable spring, and the circular arc bottom plate and expansion plate are in respective perforate
An aperture is nearby all provided with, adjustable spring one end hook is arranged on the aperture of the circular arc bottom plate,
Other end hook is on the aperture of the expansion plate.
Further, the engagement sleeves component includes U-shaped a guide plate and cover plate, will be described by bolt
U-shaped guide plate, cover plate are fixed on the circular arc bottom plate, the circular arc bottom immediately below the cover plate and cover plate
Board position is all provided with perforate, and the space of the circular arc bottom plate, U-shaped guide plate and cover plate formation is the slot.
Further, folded plate is also vertically and fixedly provided with the side of the flexible front edge of board, the steamboat is arranged on
On the folded plate, Magnetic Memory sensor probe side is additionally provided with tabletting, by the tabletting by the magnetic
Memory sensor probe is fixed on the flexible front edge of board, and the Magnetic Memory sensor probe direction is stretched with described
Rectilinear direction where contracting plate is parallel.
Further, minimum point high 1-2mm of the minimum point of the Magnetic Memory sensor probe than the steamboat.
Further, the shaft position sensor and radial displacement transducer are connected with the dolly.
Further, the magnetic memory detection device also includes and the circular arc base plate configuration identical circular arc group
Plywood, circular arc bottom plate and circular arc the compoboard two ends are equipped with connecting hole, described by adjacent connecting hole
Circular arc bottom plate is spliced into an annulus with circular arc compoboard.
Further, one or more activity detection parts are also equipped with the circular arc compoboard.
The beneficial effects of the invention are as follows：The invention provides a kind of reliable, simple curved surface Magnetic memory testing dress
Put, include the inside and outside Curved dectection of tapered pipeline Surface testing and cylinder, be also common to some radiuses difference
Little Curved dectection；In detection process, detection person's promotion dolly is moved on curved surface, activity detection part
Also moved with dolly；Under the active force of elastic parts, in whole detection process, activity detection part
Steamboat remain intimate surface contact with device under test, it is bent even if device under test surface changes
The radius of curvature in face is changed, and the Magnetic Memory sensor probe that steamboat relative position is fixed can just be kept
Fixed lift-off value, then with the use of shaft position sensor and radial displacement transducer, is conducive to the later stage
Data processing, and data and the control and the mark that detect device, improve the standard of detection efficiency and data
True property.Other circular arc bottom plate is slab construction, is fixed with cart vertical, structure is consolidated very much, Magnetic Memory is passed
Sensor is popped one's head at work, and twisting angle is greatly reduced, and the data drawn are relatively reliable.
Brief description of the drawings
Fig. 1 is a kind of structure chart of the magnetic memory detection device provided in an embodiment of the present invention for curved surface.
Fig. 2 is the structure chart of circular arc bottom plate in Fig. 1；
Fig. 3 is the structure chart of activity detection part in Fig. 1；
Fig. 4 is the structure chart of dolly in Fig. 1；
Fig. 5 is another structure chart of the magnetic memory detection device provided in an embodiment of the present invention for curved surface.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and reality
Example is applied, the present invention will be described in further detail.It should be understood that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Fig. 1 shows the structure of the magnetic memory detection device provided in an embodiment of the present invention for curved surface, Fig. 2
For the structure of circular arc bottom plate therein, Fig. 3 is the structure of activity detection part, and Fig. 4 is the structure of dolly, is
It is easy to illustrate to illustrate only the part related to the embodiment of the present invention.
With reference to shown in Fig. 1-Fig. 4, the magnetic memory detection device for curved surface that the present embodiment is provided includes one piece
One engagement sleeves component 2 for carrying slot 21 is at least installed on circular arc bottom plate 1, the circular arc bottom plate 1,
Set on the center of circle that the slot 21 is open towards circular arc bottom plate 1, the circular arc bottom plate 1 and engagement sleeves component 2
Have and an activity detection part 3 is inserted with the perforate of connection, wherein at least one slot 21, the activity inspection
Surveying part 3 includes the expansion plate 31 of an insertion slot, and the rear end of expansion plate 31 is provided with perforate, expansion plate
Elastic parts 32 is also equipped with perforate, the elastic parts 32 is that the expansion plate is moved in the slot
Dynamic to provide restoring force, the front end of expansion plate 31 is provided with steamboat 33 and Magnetic Memory sensor probe 34, institute
State the minimum point of a little higher than steamboat 33 of minimum point of Magnetic Memory sensor probe 34, the curved plate
1 centre position is also vertically and fixedly provided with dolly 4, before being provided with the dolly 4 for recording dolly and bottom plate
Enter the shaft position sensor 41 of direction displacement, and for recording the radial direction position of dolly and bottom plate radial displacement
Displacement sensor 42, shaft position sensor 41 and radial displacement transducer 42 right angle setting.
In the present embodiment, the dolly 4 is vertically fixed on circular arc bottom plate 1, the lower edge of the circular arc bottom plate 1
Approximately the parts to be tested curve form, can detect a series of the parts to be tested that radius of curvature is more or less the same,
With certain versatility.At least it is provided with an engagement sleeves component 2, Fig. 1 and shows on the circular arc bottom plate 1
Three engagement sleeves components 2 are gone out.There is a slot 21 in the middle of the engagement sleeves component, for inserting activity detection
The expansion plate 31 of part 3.Perforate is provided with the circular arc bottom plate 1 and engagement sleeves component 2, both perforates
Communicated through the slot.The rear end of the expansion plate 31 is equally also provided with the perforate of same shape, opens here
Hole is rectangle, naturally it is also possible to be set as other suitable shapes., will after the rear end of expansion plate 31 insertion slot
The elastic parts 32 is arranged in the perforate of expansion plate so that elastic parts 32 gives expansion plate one effect
Power, expansion plate is outwards ejected, and simultaneous retractable plate is also without departing from slot.So in actually detected, inspection
Survey person's promotion dolly is moved on the parts to be tested curved surface, be connected to activity detection part 3 on circular arc bottom plate also with
Dolly is moved together.Simultaneously as the active force that the elastic parts 32 of connection expansion plate 31 is provided so that living
The steamboat 33 of dynamic detection piece 3 remains the intimate surface contact with device under test, even if device under test surface
Change, the radius of curvature of curved surface changes, and the Magnetic Memory sensor that steamboat relative position is fixed is visited
First 34 also keep fixed lift-off value, are then sensed with the use of shaft position sensor 41 and radial displacement
Device 42, is easy to later data to handle, and data and the control and the mark that detect device, improves detection effect
The accuracy of rate and data.
Other circular arc bottom plate 1 is slab construction, vertical with dolly 4 fixed, such as is bolted, ties
Structure is consolidated very much, and at work, twisting angle is greatly reduced Magnetic Memory sensor probe, and the data drawn are more
Plus it is reliable.Shaft position sensor 41 described here is used for the axial displacement data for recording dolly, that is, records small
Car is in the forward travel distance along device under test curved surface, and the radial displacement transducer 42 is used for the radial direction for recording dolly
Displacement data, that is, record distance change data of the dolly apart from the parts to be tested axle center.The dolly at least two
Individual wheel, to keep the Movement consistency in detection as far as possible.The wiring board (being not drawn into figure) of car interior
The magnetic field data of Magnetic Memory sensor probe output and the displacement data of two displacement transducer output are received,
Exported after the pooling by wired or wireless mode to main frame.
As a kind of concrete structure of the engagement sleeves component 2, as shown in Fig. 2 including a U-shaped guiding
Plate 22 and cover plate 23, the circular arc bottom is fixed on by bolt by the U-shaped guide plate 22, cover plate 23
On plate 1, the position of circular arc bottom plate 1 immediately below the cover plate 23 and cover plate is all provided with perforate, the circular arc bottom
The space of plate 1, U-shaped guide plate 22 and the formation of cover plate 23 is the slot 21.Here U-shaped guide plate 22
Main function be to be oriented to activity detection part 3, limit it and swing, i.e., the width of described slot 21 is omited
More than the width of expansion plate 31 so that expansion plate 31 can just insert the slot 21.Described U-shaped
Cover plate 23 above guide plate 22, also has a rectangle perforate in the middle of it.The main function of cover plate 23 is
With circular arc bottom plate 1 together, the dynamic swing of detection piece 3 is limited, i.e., the thickness of described slot 21, which is slightly larger than, to be stretched
The thickness of contracting plate 31 so that expansion plate 31 can just insert the slot 21.
When implementing, the elastic parts 32 is chosen as adjustable spring, the circular arc bottom plate 1 and expansion plate
31 near respective perforate, is provided with an aperture 35, facilitates hook of the adjustable spring at two ends to install, specifically
, adjustable spring one end hook is on the aperture of the circular arc bottom plate, and other end hook is arranged on
On the aperture of the expansion plate.Here the rectangle perforate phase interworking on circular arc bottom plate, expansion plate and cover plate
Close, facilitate the installation and activity of adjustable spring.And the circular arc bottom plate, U-shaped guide plate and cover plate phase interworking
Close, fixed using bolt by 6 mounting holes on its both sides.
As a kind of concrete structure of the activity detection part 3, also hung down on the side of the front end of expansion plate 31
Straight to be fixed with folded plate 36, the steamboat 33 is arranged on the folded plate 36, the Magnetic Memory sensor probe
34 sides are additionally provided with tabletting 37, and the Magnetic Memory sensor probe 34 is fixed on into institute by the tabletting 37
State in the front end of expansion plate 31, Fig. 3, tabletting 37 is bolted on above expansion plate 31, by loosening
Bolt, can adjust the position of Magnetic Memory sensor probe 34, realize adjustment lift-off value.But no matter such as
What is adjusted, it is desired nonetheless to ensure the direction of the Magnetic Memory sensor probe 34 and the place of expansion plate 31
Rectilinear direction is parallel.Generally, the minimum point of the Magnetic Memory sensor probe is than the steamboat most
The high 1-2mm of low spot, this difference in height is lift-off value, can freely be set, and in whole measurement process
It is middle to keep constant.
The magnetic memory detection device of foregoing description is generally used for the Curved dectection of the parts to be tested such as boiler, storage tank,
For tapered pipeline detection, further the present apparatus can be extended.As illustrated, the Magnetic Memory inspection
Surveying device also includes and the shape identical circular arc compoboard 5 of circular arc bottom plate 1, the circular arc bottom plate and circle
Arc compoboard two ends are equipped with connecting hole 51, by adjacent connecting hole, and the circular arc bottom plate 1 is combined with circular arc
Plate 5 is spliced into an annulus.One or more activity detection parts, installation side can be installed on circular arc compoboard
Formula is identical with the mounting means that activity detection part is arranged on circular arc bottom plate, i.e., circular arc compoboard is provided with cooperation
Component is covered, the activity detection part is inserted in the slot of engagement sleeves component.In detection process, if dolly
Whole device radial motion is driven, then radial displacement transducer has output, records in this case to original
The skew of track is axially moved, facilitates the data in later stage and the correspondence on detection surface.
It is last especially, it should be noted that, magnetic memory detection device shown in the drawings, slot opening is towards circular arc
The center of circle of bottom plate, activity detection part is located on the inside of circular arc bottom plate, and the Inner arc of circular arc bottom plate is close to device under test
External surface shape, can be used for detect device outer surface and external diameter change pipeline.Certain the present embodiment
In, the slot opening direction can also be in reverse to the center of circle direction of the circular arc bottom plate, activity detection part position
In the outside of circular arc bottom plate, the external arc of circular arc bottom plate can be used for close to the inner surface configuration of device under test
Detect the pipeline of device inner surface and internal diameter change.Both implementations are in protection scope of the present invention
Within.
To sum up, by technical solution of the present invention, in Magnetic memory testing, Magnetic Memory sensor probe and device to be measured
Lift-off value between part curved surface immobilizes, it is ensured that accuracy in detection.Pass through radial displacement transducer simultaneously
Solve the problems, such as the radial positioning of dolly in measurement.Other present apparatus structure is consolidated very much, Magnetic Memory sensor
At work, twisting angle is greatly reduced probe, and the data drawn are relatively reliable.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in this hair
Any modifications, equivalent substitutions and improvements made within bright spirit and principle etc., should be included in the present invention
Protection domain within.
Claims (8)
1. a kind of magnetic memory detection device for curved surface, it is characterised in that the magnetic memory detection device
Including one piece of circular arc bottom plate, the circular arc bottom plate is up to provided with an engagement sleeves component for carrying slot less,
One is inserted with the perforate being communicated with the circular arc bottom plate and engagement sleeves component, wherein at least one slot
Individual activity detection part, the activity detection part includes the expansion plate of an insertion slot, the expansion plate
Rear end, which is provided with perforate, expansion plate perforate, is also equipped with elastic parts, and the elastic parts is the expansion plate
Mobile in the slot to provide restoring force, the flexible front edge of board is provided with steamboat and Magnetic Memory sensor is visited
Head, the minimum point of a little higher than steamboat of minimum point of the Magnetic Memory sensor probe, the curved plate
Centre position, which is also vertically and fixedly provided with dolly, the dolly, to be provided with for recording dolly and bottom plate direction of advance
The shaft position sensor of displacement and the radial displacement transducer for recording dolly and bottom plate radial displacement,
Shaft position sensor and the radial displacement transducer right angle setting.
2. it is used for the magnetic memory detection device of curved surface as claimed in claim 1, it is characterised in that the elasticity
Component is adjustable spring, and the circular arc bottom plate and expansion plate are all provided with an aperture, institute near respective perforate
Adjustable spring one end hook is stated on the aperture of the circular arc bottom plate, other end hook is arranged on described stretch
On the aperture of contracting plate.
3. it is used for the magnetic memory detection device of curved surface as claimed in claim 2, it is characterised in that the cooperation
Covering component includes U-shaped a guide plate and cover plate, is fixed on the U-shaped guide plate, cover plate by bolt
On the circular arc bottom plate, the circular arc bottom Board position immediately below the cover plate and cover plate is all provided with perforate, the circle
The space of arc bottom plate, U-shaped guide plate and cover plate formation is the slot.
4. it is used for the magnetic memory detection device of curved surface as claimed in claim 3, it is characterised in that described flexible
Folded plate is also vertically and fixedly provided with the side of front edge of board, the steamboat is arranged on the folded plate, the Magnetic Memory
Sensor probe side is additionally provided with tabletting, and the Magnetic Memory sensor probe is fixed on into institute by the tabletting
Flexible front edge of board is stated, the Magnetic Memory sensor probe direction is parallel with rectilinear direction where the expansion plate.
5. it is used for the magnetic memory detection device of curved surface as claimed in claim 4, it is characterised in that the magnetic note
Recall minimum point high 1-2mm of the minimum point than the steamboat of sensor probe.
6. it is used for the magnetic memory detection device of curved surface as claimed in claim 5, it is characterised in that the axial direction
Displacement transducer and radial displacement transducer are connected with the dolly.
7. it is used for the magnetic memory detection device of curved surface as described in claim any one of 1-6, it is characterised in that
The magnetic memory detection device also includes and the circular arc base plate configuration identical circular arc compoboard, the circular arc
Bottom plate and circular arc compoboard two ends are equipped with connecting hole, pass through adjacent connecting hole, the circular arc bottom plate and circular arc
Compoboard is spliced into an annulus.
8. it is used for the magnetic memory detection device of curved surface as claimed in claim 7, it is characterised in that the circular arc
One or more activity detection parts are also equipped with compoboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051146.8A CN106996955B (en) | 2016-01-26 | 2016-01-26 | A kind of magnetic memory detection device for curved surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051146.8A CN106996955B (en) | 2016-01-26 | 2016-01-26 | A kind of magnetic memory detection device for curved surface |
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| Publication Number | Publication Date |
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| CN106996955A true CN106996955A (en) | 2017-08-01 |
| CN106996955B CN106996955B (en) | 2019-10-08 |
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| CN201610051146.8A Active CN106996955B (en) | 2016-01-26 | 2016-01-26 | A kind of magnetic memory detection device for curved surface |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346446A (en) * | 2019-07-31 | 2019-10-18 | 中国石油大学(北京) | Non-destructive testing device |
| CN112505136A (en) * | 2020-11-27 | 2021-03-16 | 陕西工业职业技术学院 | Curved surface detection device based on magnetic memory and detection method thereof |
| CN113049672A (en) * | 2021-01-22 | 2021-06-29 | 马勇男 | Self-adaptive curved surface magnetic memory detection method |
| CN113720500A (en) * | 2021-08-31 | 2021-11-30 | 西红柿科技（武汉）有限公司 | Stress monitoring sensor and method for steel structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113049672A (en) * | 2021-01-22 | 2021-06-29 | 马勇男 | Self-adaptive curved surface magnetic memory detection method |
| CN113720500A (en) * | 2021-08-31 | 2021-11-30 | 西红柿科技（武汉）有限公司 | Stress monitoring sensor and method for steel structure |
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| Publication number | Publication date |
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| CN106996955B (en) | 2019-10-08 |
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