CN106198637A - A kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in - Google Patents
A kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in Download PDFInfo
- Publication number
- CN106198637A CN106198637A CN201610826148.XA CN201610826148A CN106198637A CN 106198637 A CN106198637 A CN 106198637A CN 201610826148 A CN201610826148 A CN 201610826148A CN 106198637 A CN106198637 A CN 106198637A
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- electrode
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- jacket tube
- rigid castors
- imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
Abstract
The invention belongs to field of non destructive testing, in particular it relates to a kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in.Multi-electrode direct imaging for jacket tube defects detection is popped one's head in, including: circular guideway, movable castor mechanism, rigid castors mechanism, battery lead plate hold-down mechanism and imaging electronics board；Movable castor mechanism is connected with rigid castors mechanism, and rigid castors mechanism is connected with battery lead plate hold-down mechanism, and imaging electrode plate is fixed on battery lead plate hold-down mechanism, and the entirety of composition is driven by rigid castors mechanism and moves on circular guideway.Probe can carry out axial and circumferential scanning to jacket tube, and all standing, without dead angle；Implementation cost is low；Probe, to jacket tube run-down, is able to defect in defect, polyurethane foam in polyethylene external protection and steel pipe surface planar defect are carried out image checking, and detection range is wide, and efficiency is high.
Description
Technical field
The invention belongs to field of non destructive testing, in particular it relates to a kind of multi-electrode for jacket tube defects detection is direct
Imaging probe, defect and steel pipe surface planar defect in defect, polyurethane foam in polyethylene external protection in jacket tube
Detection.
Background technology
Jacket tube, also known as " polyurethane heat-insulation ", is by high density polyethylene (HDPE) external protection, hard polyurethane foam layer and steel
Pipe forms, and owing to jacket tube has good mechanical performance and heat-insulating property, is widely used in liquid, transfer of gas pipe network,
Oil, chemical industry, central heating network, ventilating duct of central air conditioner and municipal works etc..
In view of popularity and the fast development of Dynamic Non-Destruction Measurement of jacket tube application, increasingly pay attention to lacking in jacket tube
It is trapped into row layered weighting, but existing lossless detection method can not meet this kind of detection demand.Existing lossless detection method
In, Magnetic Flux Leakage Inspecting can detect inside and outside defect because having stronger penetration capacity simultaneously, but can be only applied to ferromagnetic material；Magnetic
Method of perturbation is also only used for ferromagnetic material；EDDY CURRENT, ac magnetic field method alternating current potential drop send out etc. technology due to jacket tube exhausted
The impact of edge layer thickness causes lift-off distance to increase, so that accuracy of detection reduces；Unidirectional current potential drop method needs directly contact
Conductive material surface, during Aulomatizeted Detect, feasibility reduces and has surface the measurand of insulation attachment to lose efficacy；Ultrasonic inspection
There is impedance mismatch problem in survey method, it is often necessary to couplant, and effect is poor when detecting insulant；Ray detection skill
Art reduces use because of its radioactivity the most as far as possible due to the factor such as environmental protection and occupational health.
Summary of the invention
For the limitation overcoming existing lossless detection method to exist, strengthen the social service function of Non-Destructive Testing, the present invention
There is provided a kind of multi-electrode direct imaging for jacket tube defect to pop one's head in, in jacket tube defect in polyethylene external protection,
Defect and the detection of steel pipe surface planar defect in polyurethane foam.
For achieving the above object, the present invention uses following proposal:
A kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in, including: circular guideway, movable leg turbine
Structure, rigid castors mechanism, battery lead plate hold-down mechanism and imaging electrode plate；Movable castor mechanism is connected with rigid castors mechanism, Gu
Determining castor mechanism to be connected with battery lead plate hold-down mechanism, imaging electrode plate is fixed on battery lead plate hold-down mechanism；Imaging electrode plate is
Flexible, including: insulating barrier I, screen layer, insulating barrier II, detection layers and insulating barrier III, detection layers includes exciting electrode, detection
Electrode I, detecting electrode II, detecting electrode III and bucking electrode, exciting electrode, detecting electrode I, detecting electrode II and detection electricity
Pole III is positioned at the inner side of bucking electrode, and exciting electrode, detecting electrode I, detecting electrode II and detecting electrode III are shaped as square
Shape.
Preferably, circular guideway includes: half circular track I and half circular track II.
Preferably, movable castor mechanism includes: girder, cantilever I, cantilever II, movable castor I, movable castor II, movable leg
Wheel III and movable castor IV；Movable castor II and movable castor III is welded on girder, is welded with the cantilever I of movable castor I
It is connected through the hinge with girder, and is positioned at the left side of girder, be welded with the cantilever II of movable castor IV with girder also by hinge even
Connect, and be positioned at the right side of girder.
Preferably, rigid castors mechanism includes: casing, rigid castors I, rigid castors II and rigid castors III；Fixing foot
Wheel II is welded on the upside of box house, and rigid castors I and rigid castors III are welded on the downside of box house.
Preferably, battery lead plate hold-down mechanism includes: cylinder body I, cylinder body I I, cylinder body I II, spring I, spring II, spring III,
Push rod I, push rod II, push rod III, gripper shoe and connecting rod；Spring I is positioned at the inner side of cylinder body I, and push rod I is connected with gripper shoe,
Cylinder body I I equipped with spring II with push rod II is connected with gripper shoe, is positioned at the left side of gripper shoe, equipped with spring III and push rod III
Cylinder body I II be connected with gripper shoe, be positioned at the right side of gripper shoe, connecting rod is positioned at the centre of gripper shoe, push rod II, connecting rod and
Push rod III is connected with imaging electronics board.
Relative to prior art, the present invention has the advantage that probe can carry out axial and circumferential scanning to jacket tube, entirely
Cover, without dead angle；Implementation cost is low；Probe, to jacket tube run-down, is able to defect in polyethylene external protection, poly-
In urethane froth bed, defect and steel pipe surface planar defect carry out image checking, and detection range is wide, and efficiency is high；Testing result is graphically
Form directly presents；Use low pressure medium and low frequency alternating voltage as excitation, it is adaptable to Aulomatizeted Detect, the letter of device overall structure
Single, easy to operate；The jacket tube of different tube diameters can be detected by the imaging electrode plate in probe, and versatility is good.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram that a kind of multi-electrode direct imaging for jacket defects detection is popped one's head in；
Fig. 2 is the left view structural representation that a kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in；
Fig. 3 is the structural representation of circular guideway during a kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in
Figure；
Fig. 4 is that during a kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in, the structure of movable castor mechanism is shown
It is intended to；
Fig. 5 is that during a kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in, the structure of rigid castors mechanism is shown
It is intended to；
Fig. 6 is battery lead plate hold-down mechanism and imaging during a kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in
The structural representation of circuit board；
Fig. 7 a is that during a kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in, the structure of imaging electronics board is shown
It is intended to；
Fig. 7 b is the schematic diagram of detection layers in imaging electrode plate；
Figure number illustrates: 1, circular guideway 2, movable castor mechanism 3, rigid castors mechanism 4, battery lead plate compacting machine
Structure 5, polyethylene external protection 6, polyurethane foam 7, steel pipe 8, half circular track I 9, half circular track II 10, work
Dynamic castor I 11, cantilever I 12, movable castor II 13, girder 14, movable castor III 15, cantilever II 16, movable castor IV
17, rigid castors I 18, casing 19, rigid castors II 20, rigid castors III 21, push rod II 22, cylinder body I I 23, spring
II 24, gripper shoe 25, push rod I 26, cylinder body I 27, spring I 28, connecting rod 29, spring III 30, cylinder body I II 31, push away
Bar III 32, imaging electronics board 33, insulating barrier III 34, insulating barrier II 35, insulating barrier I 36, screen layer 37, detection layers
38, exciting electrode 39, detecting electrode I 40, detecting electrode II 41, detecting electrode III
Detailed description of the invention
As shown in Figure 1, Figure 2, shown in shown in Fig. 7 a, Fig. 7 b, a kind of multi-electrode direct imaging for jacket tube defects detection is visited
Head, including: circular guideway (1), movable castor mechanism (2), rigid castors mechanism (3), battery lead plate hold-down mechanism (4) and imaging electricity
Road plate (32)；Movable castor mechanism (2) is connected with rigid castors mechanism (3), rigid castors mechanism (3) and battery lead plate hold-down mechanism
(4) being connected, imaging electrode plate (32) is fixed on battery lead plate hold-down mechanism (4), and the entirety of composition is carried by rigid castors mechanism (3)
Move in the upper motion of circular guideway (1)；Imaging electrode plate (32) is flexible, including insulating barrier I (35), screen layer (36), insulation
Layer II (34), detection layers (37) and insulating barrier III (33)；Detection layers (37) include exciting electrode (38), detecting electrode I (39),
Detecting electrode II (40), detecting electrode III (41) and bucking electrode (37), exciting electrode (38), detecting electrode I (39), detection
Electrode II (40) and detecting electrode III (41) is positioned at the inner side of bucking electrode (37), exciting electrode (38) and detecting electrode I (39)
Composition I electrode pair, carries out image checking, exciting electrode (38) and detecting electrode to the defect in polyethylene external protection (5)
II (40) forms II electrode pair, and the defect in polyethylene external protection (5) and polyurethane foam (6) is carried out imaging inspection
Surveying, exciting electrode (38) and detecting electrode III (41) form III electrode pair, to polyethylene external protection (5), polyurethane foam
The defect on foam layer (6) and steel pipe (7) surface carries out image checking, exciting electrode (38), detecting electrode I (39), detecting electrode II
(40) and detecting electrode III (41) be shaped as rectangle.
As it is shown on figure 3, circular guideway (1) includes, half circular track I (8) and half circular track II (9)；Need to have outside attached
Add stand clamping circular guideway (1).
As shown in Figure 4, movable castor mechanism (2) includes, girder (13), cantilever I (11), cantilever II (15), movable castor I
(10), movable castor II (12), movable castor III (14) and movable castor IV (16)；Movable castor II (12) and movable castor
III (14) is welded on girder (13), and the cantilever I (11) being welded with movable castor I (10) is connected through the hinge with girder (13),
And it is positioned at the left side of girder (13), it is welded with the cantilever II (15) of movable castor IV (16) with girder (13) also by chain connection,
And it is positioned at the right side of girder (13).
As it is shown in figure 5, rigid castors mechanism (3) includes, casing (18), rigid castors I (17), rigid castors II (19) and
Rigid castors III (20)；Rigid castors II (19) is welded on casing (18) upper inside, rigid castors I (17) and rigid castors
III (20) is welded on casing (18) inner lower.
As shown in Figure 6, battery lead plate hold-down mechanism (4) includes, cylinder body I (26), cylinder body I I (22), cylinder body I II (30), spring
I (27), spring II (23), spring III (29), push rod I (25), push rod II (21), push rod III (31), gripper shoe (24) and company
Extension bar (28)；Spring I (27) is positioned at the inner side of cylinder body I (26), promotes push rod I (25), push rod I (25) and gripper shoe (24) phase
Connect, be connected with gripper shoe (24) with cylinder body I I (22) of push rod II (21) equipped with spring II (23), be positioned at gripper shoe (24)
Left side, is connected with gripper shoe (24) with cylinder body I II (30) of push rod III (31) equipped with spring III (29), is positioned at gripper shoe (24)
Right side, connecting rod (28) is positioned at the centre of gripper shoe (24), push rod II (21), connecting rod (28) and push rod III (31) and becomes
As circuit board (32) is connected.
Various embodiments above is only in order to illustrate technical scheme, rather than is limited；Although with reference to aforementioned
The present invention has been described in detail by each embodiment, it will be understood by those within the art that: it still can be to front
State the technical scheme described in each embodiment to modify, or the most some or all of feature is carried out equivalent；And
These amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Alternatively, as shown in Figure 7b, exciting electrode (38), detecting electrode I (39), detecting electrode II (40) and detecting electrode
The shape of III (41) can be triangle, circle, rhombus, shape, its size and its spacing such as trapezoidal, annular can be different
, concrete parameter can also be according to concrete Application Design.
Claims (5)
1. the multi-electrode direct imaging probe for jacket tube defects detection, including: circular guideway, movable castor mechanism,
Rigid castors mechanism, battery lead plate hold-down mechanism and imaging electrode plate；Movable castor mechanism is connected with rigid castors mechanism, fixing foot
Wheel mechanism is connected with battery lead plate hold-down mechanism, and imaging electrode plate is fixed on battery lead plate hold-down mechanism；Imaging electrode plate is flexible
, including: insulating barrier I, screen layer, insulating barrier II, detection layers and insulating barrier III, detection layers includes exciting electrode, detecting electrode
I, detecting electrode II, detecting electrode III and bucking electrode, exciting electrode, detecting electrode I, detecting electrode II and detecting electrode III
Being positioned at the inner side of bucking electrode, exciting electrode, detecting electrode I, detecting electrode II and detecting electrode III are shaped as rectangle.
Multi-electrode direct imaging for jacket tube defects detection the most according to claim 1 is popped one's head in, it is characterised in that: circle
Shape guide rail includes: half circular track I and half circular track II.
Multi-electrode direct imaging for jacket tube defects detection the most according to claim 1 is popped one's head in, it is characterised in that: live
Dynamic castor mechanism includes: girder, cantilever I, cantilever II, movable castor I, movable castor II, movable castor III and movable castor
IV；Movable castor II and movable castor III is welded on girder, is welded with the cantilever I of movable castor I with girder by hinge even
Connect, and be positioned at the left side of girder, be welded with the cantilever II of movable castor IV with girder also by chain connection, and be positioned at the right side of girder
Side.
Multi-electrode direct imaging for jacket tube defects detection the most according to claim 1 is popped one's head in, it is characterised in that: Gu
Determine castor mechanism to include: casing, rigid castors I, rigid castors II and rigid castors III；Rigid castors II is welded in casing
On the upside of portion, rigid castors I and rigid castors III are welded on the downside of box house.
Multi-electrode direct imaging for jacket tube defects detection the most according to claim 1 is popped one's head in, it is characterised in that: electricity
Pole plate hold-down mechanism includes: cylinder body I, cylinder body I I, cylinder body I II, spring I, spring II, spring III, push rod I, push rod II, push rod
III, gripper shoe and connecting rod；Spring I is positioned at the inner side of cylinder body I, promotes push rod I, push rod I to be connected with gripper shoe, equipped with
Spring II is connected with gripper shoe with cylinder body I I of push rod II, is positioned at the left side of gripper shoe, equipped with spring III and the cylinder of push rod III
Body III is connected with gripper shoe, is positioned at the right side of gripper shoe, and connecting rod is positioned at the centre of gripper shoe, push rod II, connecting rod and push rod
III is connected with imaging electronics board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826148.XA CN106198637A (en) | 2016-09-18 | 2016-09-18 | A kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826148.XA CN106198637A (en) | 2016-09-18 | 2016-09-18 | A kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in |
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| Publication Number | Publication Date |
|---|---|
| CN106198637A true CN106198637A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610826148.XA Pending CN106198637A (en) | 2016-09-18 | 2016-09-18 | A kind of multi-electrode direct imaging for jacket tube defects detection is popped one's head in |
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Cited By (3)
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| CN108303458A (en) * | 2018-01-24 | 2018-07-20 | 肖香福 | A kind of pipeline inspection detection device |
| CN109142462A (en) * | 2018-06-22 | 2019-01-04 | 思贝科斯(北京)科技有限公司 | Conducting probe and its manufacturing method |
| CN111458356A (en) * | 2020-04-14 | 2020-07-28 | 国网湖南省电力有限公司 | Auxiliary device for radiographic inspection of substation equipment |
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| CN111458356A (en) * | 2020-04-14 | 2020-07-28 | 国网湖南省电力有限公司 | Auxiliary device for radiographic inspection of substation equipment |
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Application publication date: 20161207 |