CN206945609U - Weld defects detection device - Google Patents
Weld defects detection device Download PDFInfo
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- CN206945609U CN206945609U CN201720946086.6U CN201720946086U CN206945609U CN 206945609 U CN206945609 U CN 206945609U CN 201720946086 U CN201720946086 U CN 201720946086U CN 206945609 U CN206945609 U CN 206945609U
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- iron core
- detection device
- magneto
- defects detection
- weld defects
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Abstract
The utility model discloses a kind of weld defects detection device, including master control set, iron core and the magneto-optical sensor being electrically connected with the master control set, the iron core and the magneto-optical sensor are oppositely arranged, the iron core is provided with the hot-wire coil being connected with AC power, in addition to for driving the iron core rotation to produce the driving part of alternate rotary magnetic field.Using weld defects detection device disclosed in the utility model, the hot-wire coil being powered with AC power is driven to produce alternate rotary magnetic field by driving part, butt-welding fitting carries out multi-direction excitation, realize the detection to irregular weld defect, and the dynamic magneto-optic figure by magneto-optical sensor to acquisition each defect information of weldment, analyzed and processed to obtain weldment defect type and position by master control set, realize the real-time detection of butt-welding fitting defect.
Description
Technical field
Weld Defect Testing Technology field is the utility model is related to, is filled more specifically to a kind of weld defects detection
Put.
Background technology
Visual detection needs the experience by tester, and the scope of application is narrower, the defects of can not detecting inside configuration；Ray
It is high to detect testing cost, thickness of workpiece is restricted, and detection device is larger, and caused ray Radiation On Human body injury is very big, need to examine
Consider safety prevention measure；EDDY CURRENT is only suitable for the detection of conductive material surface and near surface, it is difficult to for complex-shaped work
Part and being difficult to judges the species of weld defect, shapes and sizes, and testing result is not directly perceived；Requirement of the ultrasound detection to operating personnel
Higher, distinguishing different types of weld defect has certain difficulty and needs couplant, and display result is not directly perceived and is not easy to forever
Kubo is deposited；Liquid penetrant testing can only detect Surface-breaking defect, it is impossible to the depth of display defect, internal shape and size；Magnetic
Detection is limited to ferrimagnet, and has strict demand to workpiece surface；Magnetic Flux Leakage Inspecting is only limited to magnetic material, and testing result can not
Visualization, it is difficult to distinguish the species of defect；Magneto-optic imaging non-destructive detects under traditional single magnetic field excitation, can only be to high magnetic permeability
Weldment is detected, and is typically also served only for the extraction of regular shape defect information, it is impossible to is realized the detection of multi-direction defect, is gathered
The magneto optic images arrived are not clear enough, the Limited information that weld defect the magneto optic images include, and can also lose some important welderings sometimes
Connect defect Magnetic Field.Can laser hologram Non-Destructive Testing depends on the defects of interior of articles cause object table under external force
The corresponding deformation in face.
DC electromagnet produces the single stationary magnetic field in direction, is normally only used for the weld seam or crackle in vertical magnetic field direction
Detection, detection object are restricted；Low frequency alternating magnetic field caused by alternating electromagnet, collect for dynamic magneto-optic figure, comprising
Defect information encourages the defects of obtaining information more than DC electromagnet, but to be similarly detection object single and not for the limitation of this method
Multidirectional detection can be realized.
In summary, the problems such as how efficiently solving limited weld defects detection object, Detection results difference, is current sheet
Art personnel's urgent problem.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of weld defects detection device, to solve weld defect
The problems such as detection object is limited, Detection results difference.
In order to achieve the above object, the utility model provides following technical scheme：
A kind of weld defects detection device, including master control set, iron core and the magneto-optic being electrically connected with the master control set
Sensor, the iron core and the magneto-optical sensor are oppositely arranged, and the iron core is provided with the hot-wire coil being connected with AC power,
Also include being used to drive the iron core rotation to produce the driving part of alternate rotary magnetic field.
Preferably, in above-mentioned weld defects detection device, the iron core is provided with the mistake being connected with the AC power
Pass slip ring, the hot-wire coil are connected with the rotor of the slip ring, and the stator of the slip ring is connected with the AC power.
Preferably, in above-mentioned weld defects detection device, the driving part is stepper motor, and the iron core is provided with
The fixture being connected with the stepper motor, the iron core between the fixture and the stepper motor through being removably fixedly connected.
Preferably, in above-mentioned weld defects detection device, shaft coupling is provided between the fixture and the stepper motor.
Preferably, in above-mentioned weld defects detection device, the master control set includes being used to control the stepper motor
The speed control of rotating speed.
Preferably, in above-mentioned weld defects detection device, the fixture includes chuck body and fixed plate, the iron core
Between the chuck body and the fixed plate, the chuck body and the fixed plate are fixed through bolt.
Weld defects detection device provided by the utility model, including master control set, iron core and master control set are electrically connected with
Magneto-optical sensor, iron core and magneto-optical sensor be oppositely arranged, and iron core is provided with the hot-wire coil being connected with AC power, in addition to
For driving iron core rotation to produce the driving part of alternate rotary magnetic field.Using weld defects detection provided by the utility model
Device, the hot-wire coil being powered with AC power is driven to produce alternate rotary magnetic field by driving part, butt-welding fitting carries out multi-party
To excitation, the detection to irregular weld defect, and the dynamic by magneto-optical sensor to acquisition each defect information of weldment are realized
Magneto-optic figure, analyzed and processed to obtain weldment defect type and position by master control set, realize the real-time inspection of butt-welding fitting defect
Survey.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the weld defects detection device that the utility model embodiment provides；
Fig. 2 is the main structure diagram for the fixture that the utility model embodiment provides；
Fig. 3 is the magnetic strength imaging schematic diagram of weldment in the alternation rotating electric field that the utility model embodiment provides.
Marked in accompanying drawing as follows：
Driving part 1, iron core 2, weldment 3, magneto-optical sensor 4, speed control 5, shaft coupling 6, slip ring 7, fixture 8, friendship
Flow power supply 9, master control set 10.
Embodiment
The utility model embodiment discloses a kind of weld defects detection device, with solve weld defects detection object by
The problems such as limit, Detection results difference.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1-Fig. 3 is referred to, Fig. 1 is the structural representation for the weld defects detection device that the utility model embodiment provides
Figure；Fig. 2 is the main structure diagram for the fixture that the utility model embodiment provides；Fig. 3 provides for the utility model embodiment
Alternation rotating electric field in weldment magnetic strength imaging schematic diagram.
In a kind of specific embodiment, weld defects detection device provided by the utility model, including master control set
10th, iron core 2 and the magneto-optical sensor 4 being electrically connected with the master control set 10.Wherein, master control set 10 passes through with magnetic field sensor
Connection connects, and master control set 10 may generally be the setting such as PC, display or tablet personal computer, be sent according to magneto-optical sensor 4
Magneto-optic figure master control set 10 carry out image recognition it handled, and can be shown on the display apparatus.Set on iron core 2
Hot-wire coil is equipped with, hot-wire coil is connected with AC power 9 to produce alternating magnetic field when iron core 2 rotates, and iron core 2 and magneto-optic pass
Sensor 4 is oppositely arranged, and weldment 3 is set between the two, and driving part 1 can be the devices such as motor, can be set according to being actually needed
The concrete form of driving part 1, in the scope of protection of the utility model.
It is understood that in order to ensure safety and obtain testing result, the output voltage of AC power 9 need to select smaller
Power supply, and generally low-frequency ac power.The detection window alignment of magneto-optical sensor 4 is placed on the lower section of the defect of weldment 3, to protect
The dynamic magneto-optic figure imaging that card collects is most clear, and the interface of magneto-optical sensor 4 is connected with the interface of master control set 10.
Using weld defects detection device provided by the utility model, weldment 3 is placed on iron core 2 and magneto-optical sensor 4
Between, coil electricity and driving part 1 are rotated with dynamic iron core 2 to form alternate rotary magnetic field, and butt-welding fitting 3 carries out excitation, and magneto-optic passes
Sensor 4 obtains the dynamic magneto-optic figure for including each position defect information of weldment 3, and is sent to master control set by the magneto optic images are obtained
10, master control set 10 is handled, and obtains type and the position of workpiece, defect, realizes the real-time detection of workpiece, defect, the device
Multidirectional detection such as horizontal and vertical can be carried out to crack defect present in metal weldment 3, so as to ensure workpiece quality and
Welding quality.
Specifically, iron core 2 is provided with the slip ring 7 being connected with AC power 9, hot-wire coil is connected with the rotor of slip ring 7, sliding
The stator of ring 7 is connected with AC power 9.Slip ring 7 is generally located on the top of iron core 2, in order to prevent coil and AC power 9 straight
It is connected on when iron core 2 rotates and winds in succession, the indirect current of slip ring 7 while rotation, it is produced frequency and the rotation of size identical
Turn magnetic field, certainly, in other embodiments, rotating A.C. magnetic field can also be obtained by other means without above-mentioned setting.
Middle device is used as to the coil electricity on iron core 2 by slip ring 7, coil is avoided and is directly coupled to rotating in AC power 9
When around magnetic resistance is produced together, ensure that the accuracy of experimental result.
Further, driving part 1 is stepper motor, and iron core 2 is provided with the fixture 8 being connected with stepper motor, and iron core 2 passes through
Fixture 8 is removably fixedly connected between stepper motor.
Stepper motor should select the less type of power output, prevent rotary speed is excessive to be unfavorable for interpretation of result, fixture 8
Generally non-conductive non-magnetic material, such as plastics, result is had an impact in order to avoid producing induced field.It is wound on iron core 2
Coil can be calculated by test parameters, such as the specification of iron core 2, alternating current input voltage size, stepper motor output work
Distance of rate, iron core 2 and weldment 3 etc..
Further, shaft coupling 6 is provided between fixture 8 and stepper motor.Shaft coupling 6 need to ensure the diameter of upper and lower stomidium,
The bore dia of axle can completely coordinate on the bore dia and lower end fixture 8 of upper end stepper motor output shaft.
Specifically, master control set 10 includes being used for the speed control 5 for controlling stepper motor rotating speed.It can be driven by changing
The rotating speed of stepper motor changes excitation mode, and under the conditions of different excitations magneto-optical sensor 4 can gather under a cycle
The Magnetic fluxleakage distribution situation of defect under to different magnetic induction intensity, it can be obtained by the contrast of different the magneto optic images with clearer
The information such as shape, size, distributing position to defect.Or it can also be passed by the output voltage and magneto-optic of AC power 9
The sample frequency of sensor 4 is changed, in the scope of protection of the utility model.
Further, fixture 8 includes the body of fixture 8 and fixed plate, and iron core 2 is located between the body of fixture 8 and fixed plate, fixture
8 bodies and fixed plate are fixed through bolt.The rotary shaft of the body of fixture 8 is connected with stepper motor to be rotated with moving iron core 2, typically may be used
Fixed by four bolts, certainly, in other embodiments, fixed form or the number of bolt can be voluntarily selected, in this reality
With in new protection domain.
In a kind of specific embodiment, stepping motor is connected by shaft coupling 6 with the tape spool fixture 8 of secured core 2,
The tape spool fixture 8 of secured core 2 fixes iron core 2, thus make iron core 2 produce one rotation angular speed, stepping motor with
Speed control 5 is connected, and the output speed of motor is controlled by controller, so as to control the speed of whole rotary course.
Iron core 2 is connected by slip ring 7 with AC power 9, and slip ring 7 is fixed on the top of iron core 2, and effect is the mistake for preventing iron core 2 in rotation
Electric wire leads to alternating current while rotation around magnetic resistance is produced together to slip ring 7 in journey, it is produced frequency identical with size
Rotating excitation field.Weldment 3 is located at the lower section of iron core 2, controls the position of weldment 3 manually during experiment, weldment 3 is avoided contact to iron core 2
And optimum detection position is in, because supplying electricity to the excitation of iron core 2 with exchange under turning effort, the surface of weldment 3 can also produce sense
Answer magnetic field, it is more likely that be attached together with iron core 2, cause vibration, breaking test equipment, influence experimental result magneto-optical sensor
4 are fixed on the lower section of weldment 3 and are connected with computer, and stepper motor is with AC power 9 to caused rotation under the collective effect of iron core 2
Turn magnetic field, carry out excitation with this rotating excitation field butt-welding fitting 3, then obtained by magneto-optical sensor 4 and believed comprising each position defect of weldment 3
The dynamic magneto-optic figure of breath, finally and the magneto optic images of acquisition are input to computer, by corresponding image recognition algorithm to workpiece
Defect image is handled, and obtains type and the position of workpiece, defect, realizes the real-time detection of workpiece, defect.
The alternate rotary magnetic field that the additional turning effort of the single yoke of the device is formed, can be achieved multi-direction excitation, no matter splits
How changeable the distribution arrangement of the direction of seam defect be how changeable, always there is that the alternating magnetic field in some direction is vertical with weld seam, magnetic force
Line is vertical with defect distribution direction.The detection to irregular weld defect can be realized, the weldering to cross direction profiles can also be realized
The defects of pair cross-section area effects such as seam are little is accurately detected, applied widely, automaticity is high, detection speed
It hurry up.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (6)
1. a kind of weld defects detection device, it is characterised in that electrically connect including master control set, iron core and with the master control set
The magneto-optical sensor connect, the iron core and the magneto-optical sensor are oppositely arranged, and the iron core is provided with what is be connected with AC power
Hot-wire coil, in addition to for driving the iron core rotation to produce the driving part of alternate rotary magnetic field.
2. weld defects detection device according to claim 1, it is characterised in that the iron core is provided with and exchanged with described
Pass slip ring is crossed in power supply connection, and the hot-wire coil is connected with the rotor of the slip ring, the stator of the slip ring and the friendship
Flow power supply connection.
3. weld defects detection device according to claim 1, it is characterised in that the driving part is stepper motor,
The iron core is provided with the fixture being connected with the stepper motor, and the iron core is through removable between the fixture and the stepper motor
That unloads is fixedly connected.
4. weld defects detection device according to claim 3, it is characterised in that between the fixture and the stepper motor
Provided with shaft coupling.
5. weld defects detection device according to claim 4, it is characterised in that the master control set includes being used to control
The speed control of the stepper motor rotating speed.
6. according to the weld defects detection device described in claim any one of 3-5, it is characterised in that the fixture includes fixture
Body and fixed plate, the iron core are located between the chuck body and the fixed plate, the chuck body and the fixed plate
Fixed through bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720946086.6U CN206945609U (en) | 2017-07-31 | 2017-07-31 | Weld defects detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720946086.6U CN206945609U (en) | 2017-07-31 | 2017-07-31 | Weld defects detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206945609U true CN206945609U (en) | 2018-01-30 |
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| CN201720946086.6U Active CN206945609U (en) | 2017-07-31 | 2017-07-31 | Weld defects detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228898A (en) * | 2017-07-31 | 2017-10-03 | 广东工业大学 | Weld defects detection device |
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2017
- 2017-07-31 CN CN201720946086.6U patent/CN206945609U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228898A (en) * | 2017-07-31 | 2017-10-03 | 广东工业大学 | Weld defects detection device |
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