CN110376276A - Pipeline magnetic leakage detection device - Google Patents
Pipeline magnetic leakage detection device Download PDFInfo
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- CN110376276A CN110376276A CN201910731039.3A CN201910731039A CN110376276A CN 110376276 A CN110376276 A CN 110376276A CN 201910731039 A CN201910731039 A CN 201910731039A CN 110376276 A CN110376276 A CN 110376276A
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- magnetic flux
- flux leakage
- pipeline
- inspection device
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 230000004907 flux Effects 0.000 claims abstract description 88
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000007689 inspection Methods 0.000 claims description 35
- 229920001971 elastomer Polymers 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 210000001550 testis Anatomy 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- 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
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a pipeline magnetic flux leakage detection device, and belongs to the technical field of pipeline maintenance. According to the invention, the permanent magnets and the steel brushes are telescopically connected to the first mounting plate through the connecting rods and the springs, the magnetic field sensors are telescopically connected to the second mounting plate, and the ends of the steel brushes form a closed ring for being attached to the inner side of the circular pipe wall. Before installing above-mentioned pipeline magnetic leakage detecting element into the pipeline, can adjust steel brush and magnetic field sensor to the height with the pipeline internal diameter adaptation for pipeline magnetic leakage detection device is after getting into the pipeline, and pipeline inner wall is hugged closely to steel brush and magnetic field sensor. The pipeline that has realized using same pipeline magnetic leakage detection device to not unidimensional detects, has reduced the detection cost when improving and has detected the accuracy.
Description
Technical field
The present invention relates to tubular service technical field, in particular to a kind of Pipeline Magnetic Flux Leakage Inspection device.
Background technique
Pipeline is one of petroleum, the most important mode of movement of natural gas, currently, China's long oil and gas pipeline face it is serious
Problem is: most of in-service pipelines are 60 to the seventies of construction, entered in the aged phase, be in the Frequent Accidents stage.By
To the restriction of detection means, pipe damage situation majority definitely cannot differentiate and position, and often result in and blindly excavate or blindly report
The unnecessary loss such as useless.It is at present usually that Pipeline Magnetic Flux Leakage Inspection device is mounted in oil pipeline, to oil pipeline
Tube wall is detected, so that it is determined that the degree and specific location of oil pipeline damage.
Pipeline Magnetic Flux Leakage Inspection device usually used at present includes: that permanent magnet and probe utilize in long distance pipeline detection
The tube wall saturated magnetization of pipeline is formed magnetic loop in tested tube wall, when tube wall does not have defect, the magnetic line of force is in by permanent magnet
Within tube wall, when tube wall existing defects, the magnetic line of force can be pierced by tube wall, form magnetic flux leakage.It is picked up at trunking loss using probe
Magnetic leakage signal, the damaged condition in pipeline and the position of damage can be determined, to carry out fixed point maintenance.
In existing Pipeline Magnetic Flux Leakage Inspection device, permanent magnet and probe are fixed structures, in various sizes of pipeline
In in use, the alnico magnets and probe of the Pipeline Magnetic Flux Leakage Inspection device of small size can not be close to the pipe of large-sized pipeline
Wall causes the accuracy of detection low.Therefore, the pipeline of every kind of size needs the Pipeline Magnetic Flux Leakage Inspection device using correspondingly-sized,
This considerably increases testing costs.
Summary of the invention
The embodiment of the invention provides a kind of Pipeline Magnetic Flux Leakage Inspection device, it is able to solve pipe leakage usually used at present
Detection device detection accuracy is low and the higher problem of testing cost.The technical solution is as follows:
A kind of Pipeline Magnetic Flux Leakage Inspection device is provided, which includes: Magnetic Flux Leakage Inspecting unit, power supply list
Member and control unit；
The Magnetic Flux Leakage Inspecting unit and the control unit respectively with the power supply unit electric property coupling；
The Magnetic Flux Leakage Inspecting unit includes: Magnetic Flux Leakage Inspecting section, the first mounting disc, the second mounting disc, terminal pad, multiple permanent magnetism
Iron, multiple steel brushes and multiple magnetic field sensors；
The Magnetic Flux Leakage Inspecting section is cylindrical body, and first mounting disc has removably been sequentially connected in the Magnetic Flux Leakage Inspecting section, has been somebody's turn to do
Second mounting disc and the terminal pad, the terminal pad is for connecting the power supply unit；
Multiple mounting holes are circumferentially uniformly provided on the outer wall of first mounting disc, each permanent magnet connects at least one company
The other end of one end of connection mechanism, each bindiny mechanism is inserted into corresponding mounting hole, removable on the outer wall of each permanent magnet
Connect a steel brush with unloading；
Each bindiny mechanism includes: the connecting rod that first end is connect with the permanent magnet, and is sleeved in the connecting rod
Spring, the second end of the connecting rod are locked in a mounting hole by engaging structure, the both ends of the spring respectively with the permanent magnetism
Iron and first mounting disc offset；
Multiple magnetic field sensor is circumferentially telescopically connected on the outer wall of second mounting disc, for carrying out leakage field
It detects and sends magnetic leakage signal to the control unit.
In a kind of possible design, which includes: the snap ring and set being inwardly arranged in the end of the mounting hole
Mounted in the stop collar of the second end of the connecting rod, the snap ring is for making to prevent the stop collar from deviating from from the mounting hole.
In a kind of possible design, which includes: the groove being arranged on the inner wall of the mounting hole and fixation
Sliding block in the side of the connecting rod, the sliding block are locked in the groove, and the groove is for preventing the sliding block from the mounting hole
Abjection.
In a kind of possible design, multiple threaded holes have been uniformly arranged in the circumferential direction in second mounting disc；
Each connecting plate is connected in a threaded hole by a threaded rod, detachably connected on each connecting plate
There is a magnetic field sensor.
In a kind of possible design, the Pipeline Magnetic Flux Leakage Inspection device further include: anti-to ram；
This prevents raming including conical section and the spherical segment connecting with the first end of the conical section；
The second end of the conical section and the Magnetic Flux Leakage Inspecting section are detachably connected；
The diameter of the first end of the conical section is less than the diameter of the second end of the conical section.
In a kind of possible design, which includes: first shell, which is cylinder, this first
Multiple support frames are hinged on the outer wall of shell, the free end of each support frame is equipped with a mileage wheel；
Be equipped with battery inside the first shell, the battery respectively with the Magnetic Flux Leakage Inspecting unit and the control unit electrical property coupling
It connects；
The both ends of the outer wall of the first shell are set with the first rubber cup.
In a kind of possible design, the power supply unit further include: be uniformly arranged in the circumferential direction the outer wall in the first shell
On multiple support bases；
Each support base includes two parallel annulus, has circular hole in the first end of each support frame, each support frame
It is rotatably connected on two annulus of a support base by the circular hole and bolt arrangement.
In a kind of possible design, which includes: second shell, which is cylinder, and inside is set
There is controller；
The controller and the Magnetic Flux Leakage Inspecting unit electric property coupling carry out Magnetic Flux Leakage Inspecting for controlling the Magnetic Flux Leakage Inspecting unit；
The both ends of the outer wall of the second shell are set with the second rubber cup.
In a kind of possible design, which has radiused edges.
In a kind of possible design, which connects the power supply unit by the first universal joint；
The power supply unit connects the control unit by the second universal joint；
First universal joint and second universal joint include: cross axle, the first universal-joint fork and the second universal-joint fork；
The cross axle includes orthogonal first axle and the second axis, and the both ends of first universal-joint fork are rotatably coupled
At the both ends of the first axle, the both ends of second universal-joint fork are rotatably connected to the both ends of second axis.
By the way that multiple permanent magnets and multiple steel brushes are telescopically connected in the first mounting disc by connecting rod and spring,
Multiple magnetic field sensors are telescopically connected in the second mounting disc, and the end of multiple steel brushes forms a close ring, are used for
It is bonded on the inside of circular tube wall.It, can be by steel brush and magnetic field before above-mentioned Pipeline Magnetic Flux Leakage Inspection unit is installed into pipeline
Sensor is adjusted to the height being adapted to internal diameter of the pipeline so that Pipeline Magnetic Flux Leakage Inspection device enter pipeline after, steel brush and magnetic field
Sensor is close to inner wall of the pipe.It realizes and various sizes of pipeline is detected using the same Pipeline Magnetic Flux Leakage Inspection device,
Testing cost is reduced while improving detection accuracy.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of Pipeline Magnetic Flux Leakage Inspection device provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram for engaging structure provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of another locking structure provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of Magnetic Flux Leakage Inspecting unit provided in an embodiment of the present invention.
Each label declaration in attached drawing is as follows:
1- Magnetic Flux Leakage Inspecting unit；
11- Magnetic Flux Leakage Inspecting section；
The first mounting disc of 12-；
121- mounting hole；
The second mounting disc of 13-；
131- threaded hole, 132- threaded rod, 133- connecting plate；
14- terminal pad；
15- permanent magnet；
16- steel brush；
17- magnetic field sensor；
18- bindiny mechanism；
181- connecting rod, 182- spring；
19- engages structure；
191- snap ring, 192- stop collar, 193- groove, 194- sliding block；
2- power supply unit；
21- first shell, 22- support frame, 23- mileage wheel, the first rubber cup of 24-, 25- support base, 26-
First universal joint；
3- control unit；
31- second shell, the second universal joint of 32-, the second rubber cup of 33-；
4- is anti-to ram；
41- conical section, 42- spherical segment.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structural schematic diagram of Pipeline Magnetic Flux Leakage Inspection device provided in an embodiment of the present invention, referring to Figure 1, should
Pipeline Magnetic Flux Leakage Inspection device includes: Magnetic Flux Leakage Inspecting unit 1, power supply unit 2 and control unit 3；The Magnetic Flux Leakage Inspecting unit 1 and the control
Unit 3 processed respectively with 2 electric property coupling of power supply unit；The Magnetic Flux Leakage Inspecting unit 1 includes: Magnetic Flux Leakage Inspecting section 11, the first mounting disc
12, the second mounting disc 13, terminal pad 14, multiple permanent magnets 15, multiple steel brushes 16 and multiple magnetic field sensors 17；The Magnetic Flux Leakage Inspecting
Section 1 is cylindrical body, has removably been sequentially connected with first mounting disc 12, second mounting disc, 13 and in the Magnetic Flux Leakage Inspecting section 1
The terminal pad 14, the terminal pad 14 is for connecting the power supply unit 2；It is circumferentially uniformly provided on the outer wall of first mounting disc 12
Multiple mounting holes 121, each permanent magnet 15 connect one end of at least one bindiny mechanism 18, and each the bindiny mechanism 18 is another
End is inserted into corresponding mounting hole 121, a detachably connected steel brush 16 on the outer wall of each permanent magnet 15；Each connection machine
Structure 18 includes: the connecting rod 181 that first end is connect with the permanent magnet 15, and the spring 182 being sleeved in the connecting rod 181,
The second end of the connecting rod 181 by engage structure 19 be locked in a mounting hole 121, the both ends of the spring 182 respectively with
The permanent magnet 15 and first mounting disc 12 offset；Multiple magnetic field sensor 17 is circumferentially telescopically connected to second peace
On the outer wall of sabot 13, for carrying out Magnetic Flux Leakage Inspecting and sending magnetic leakage signal to the control unit 3.
The working principle of Pipeline Magnetic Flux Leakage Inspection device provided in an embodiment of the present invention is described in detail below:
Before the leakage magnetic detection device is pushed into pipeline, existed according to the multiple magnetic field sensors 17 of the big minor adjustment of line size
Height in second mounting disc 13, after so that the device is entered pipeline, end and the inner wall of the pipe of magnetic field sensor 17 offset；It is above-mentioned
The end of multiple steel brushes 16 forms the annulus of a closure, offsets with the inner wall of pipeline, the spring 182 in first mounting disc 12
All in compressive state.
The leakage magnetic detection device is towed by pipe detection from crawling device in the duct, leakage magnetic detection device when walking,
For Magnetic Flux Leakage Inspecting unit 1 preceding, magnetic field is passed to the steel brush 16 being directly connected to, the steel brush in Magnetic Flux Leakage Inspecting unit 1 by permanent magnet 15
16 offset with tube wall, and constantly rub, and the annulus that steel brush 16 forms is by the rubbed fully saturated magnetization of inner wall of the pipe, in pipeline
Magnetic loop is formed on inner wall, the amount in various magnetic fields and its variation can be transformed into magnetic leakage signal by magnetic field sensor 17.
By the way that multiple permanent magnets 15 and multiple steel brushes 16 are telescopically connected to the by connecting rod 181 and spring 182
In one mounting disc 12, multiple magnetic field sensors 17 are telescopically connected in the second mounting disc 13, the end shape of multiple steel brushes 16
At a close ring, for being bonded with circular tube wall inside.By above-mentioned Pipeline Magnetic Flux Leakage Inspection unit 1 be installed into pipeline it
Before, steel brush 16 and magnetic field sensor 17 can be adjusted to the height being adapted to internal diameter of the pipeline, so that Pipeline Magnetic Flux Leakage Inspection device
After entering pipeline, steel brush 16 and magnetic field sensor 17 are close to inner wall of the pipe.It realizes and is filled using the same Pipeline Magnetic Flux Leakage Inspection
It sets and various sizes of pipeline is detected, reduce testing cost while improving detection accuracy.
Wherein, along the axial direction of the first mounting disc 12, the quantity of the mounting hole 121 can be it is multiple, for example, it may be 2,
4 etc., a permanent magnet 15 is fixed on along axial multiple mounting holes 121 of the first mounting disc 12.
Fig. 2 is a kind of schematic diagram for engaging structure provided in an embodiment of the present invention, refers to Fig. 2, possible is set a kind of
In meter, which includes: the snap ring 191 being inwardly arranged in the end of the mounting hole 121 and is sleeved on the connecting rod 181
Second end stop collar 192, the snap ring 191 is for making to prevent the stop collar 192 from deviating from from the mounting hole 121.
The snap ring 191 is provided in each mounting hole 121, which is located at 121 top of mounting hole.For example, can be with
It is fixed by the modes such as welding, being bonded.There is circular hole among the snap ring 191, the second end of the connecting rod 181 passes through the snap ring 191
Circular hole, protrude into the mounting hole 121；The stop collar 192 is annular structure, is sleeved on the connecting rod by intermediate hole
In 181 second end, for example, can be fixed by the modes such as welding, being bonded.When connecting rod 181 is moved upward to stop collar 192
Top and the bottom of the snap ring 191 when offseting, connecting rod 181 can not continue to move up, to avoid connecting rod 181 from peace
Dress skids off in hole 121, to make the permanent magnet 15 being fixed in connecting rod 181 and steel brush 16 without departing from the first mounting disc 12.
When the device runs on tube wall the position for having recess, since the elastic force of compressed spring 182 acts on, connection
Bar 181 applies thrust to permanent magnet 15, so that permanent magnet 15 and steel brush 16 move outwardly to the tube wall for continuing to be close to recess, thus
Steel brush 16 can be by the tube wall saturated magnetization of recessed position；When the device, which runs to tube wall, the position of protrusion occurs, due to steel brush
16 offset with tube wall, and reaction force of the steel brush 16 by tube wall, the steel brush 16 and permanent magnet 15 move down, and then compressed spring
182, it still keeps offseting with low-force between steel brush 16 and tube wall, so that steel brush 16 will not be damaged because of tube wall protrusion.
After steel brush 16 magnetizes tube wall, magnetic field sensor 17 rapidly detects the tube wall of the position, in pipe
Wall occurs being recessed or the position of protrusion, and the magnetic loop of the position of recess or protrusion is different from the magnetic loop of smooth tube wall, therefore, magnetic
Field sensor 17 will detect abnormal magnetic loop, generate magnetic leakage signal, and magnetic leakage signal is transmitted at control unit 3
Reason.
Fig. 3 is the schematic diagram of another locking structure provided in an embodiment of the present invention, Fig. 3 is referred to, a kind of possible
In design, which includes: the groove 193 being arranged on the inner wall of the mounting hole 121 and is fixed on the connecting rod 181
Side sliding block 194, which is locked in the groove 193, and the groove 193 is for preventing the sliding block 194 from the installation
Deviate from hole 121.
Wherein, the groove 193 is in long strip, for example, section can be semicircle, which is fixedly connected on the company
On extension bar 181；The shape of sliding block 194 is to be adapted with the groove 193, for example, end can be hemispherical, the sliding block 194 with
193 phase of groove is agreed with and can be slided in groove 193.When the sliding block 194 is at 193 bottom of groove, the connecting rod 181
Bottom end also reaches the bottom of the mounting hole 121；When sliding to the top of the groove 193 on sliding block 194, the top of the groove 193
The sliding block 194 is blocked, the length which stretches out first mounting disc 12 reaches maximum value, i.e., the connecting rod 181 can not
It is moved up from the mounting hole 121 again, which is slided in the mounting hole 121 without from the installation
Deviate from hole 121, guarantee permanent magnet 15 be telescopically connected in the first mounting disc 12 without departing from.
Fig. 4 is a kind of structural schematic diagram of Magnetic Flux Leakage Inspecting unit provided in an embodiment of the present invention, Fig. 4 is referred to, in one kind
In possible design, multiple threaded holes 131 have been uniformly arranged in the circumferential direction in second mounting disc 13；Each connecting plate 133 passes through
One threaded rod 132 is connected in a threaded hole 131, and a magnetic field is detachably connected on each connecting plate 133 and is passed
Sensor 17.
Wherein, the quantity of multiple threaded hole 131 can be at least four, for example, it may be 4,6 or 8 etc..Often
A threaded hole 131 is connect by screw thread with the first end of the threaded rod 132, and the second end and connecting plate 133 of the threaded rod 132 are solid
Fixed connection；The connecting plate 133 is the laminated structure with the external shape fits of magnetic field sensor 17, for example, the magnetic field sensor 17
Bottom surface is circle, and connecting plate 133 is slightly larger than the circle of the round diameter also for radius.First face of the connecting plate 133 and the spiral shell
The second end of rasp bar 132 is fixedly connected, and the second face of the connecting plate 133 is bolted with the magnetic field sensor 17.For example,
Multiple through-holes can be equipped on the connecting plate 133, the pedestal of the magnetic field sensor 17 is equipped with the through-hole of multiple adaptations, by bolt
It penetrates in the through-hole on the pedestal of connecting plate 133 and magnetic field sensor 17, is fixed by nut.
By the way that threaded rod 132 is screwed in the threaded hole 131, it can make the threaded rod 132 in second mounting disc 13
Extension elongation reduces；By the way that threaded rod 132 is screwed out the threaded hole 131, the threaded rod 132 can be made in second mounting disc 13
On extension elongation increase.Since extension elongation of the threaded rod 132 in second mounting disc 13 is adjustable, so that the screw thread
The magnetic field sensor 17 that bar 132 connects is adapted to the pipeline of different inner diameters, to obtain accurate detection result.
In a kind of possible design, the Pipeline Magnetic Flux Leakage Inspection device further include: anti-to ram 4；It 4 includes taper that this is anti-, which to ram,
Section 41 and the spherical segment 42 being connect with the first end of the conical section 41；The second end of the conical section 41 and the Magnetic Flux Leakage Inspecting section 11
It is detachably connected；The diameter of the first end of the conical section 41 is less than the diameter of the second end of the conical section 41.
Wherein, when Pipeline Magnetic Flux Leakage Inspection device is walked in the duct, this is anti-ram 4 spherical segment 42 in entire pipe leakage
The front end of detection device, conical section 41 is in the rear end of the spherical segment 42.Specifically, which can also include tapered portion
And cylindrical portion, the one end of the tapered portion being relatively large in diameter is connect with the cylindrical portion, to reinforce the intensity of the conical section 41.
When walking, this prevents raming 4 in the front of Magnetic Flux Leakage Inspecting section 11, when the anti-tamper ramed in 4 and pipeline is hit
When generate impact force, which is conducive to disperse impact force, which is conducive to weaken impact force, so as to
It is directly collided with tamper to avoid Magnetic Flux Leakage Inspecting section 11, reduces the impact force generated due to direct collision to Magnetic Flux Leakage Inspecting unit
Magnetic Flux Leakage Inspecting unit 1 is protected in 1 damage.
In a kind of possible design, which includes: first shell 21, which is cylinder, should
Multiple support frames 22 are hinged on the outer wall of first shell 21, the free end of each support frame 22 is equipped with a mileage wheel 23；
Inside the first shell 21 be equipped with battery, the battery respectively with the Magnetic Flux Leakage Inspecting unit 1 and 3 electric property coupling of control unit；It should
The both ends of the outer wall of first shell 21 are set with multiple rubber cups 24.
Wherein, which is provided with battery, which can be rechargeable battery, for being the Magnetic Flux Leakage Inspecting list
Member 1 and the control unit 3 are powered, and multiple support frames 22 are hinged in the first shell 21, in being connected on each support frame 22
Journey wheel 23；Weight is distributed on multiple support frame 22 by the first shell 21, then by this on multiple support frame 22
Weight is distributed on tube wall by journey wheel 23, and the mileage wheel 23 and the support frame 22 together play a supporting role to first shell 21,
The weight of battery is dispersed on multiple support frames 22 and mileage wheel 23, reduces the resistance that cell section is walked in pipeline.
The power supply unit 2 further include: be uniformly arranged in the circumferential direction multiple support bases 25 on the outer wall of the first shell 21；
Each support base 25 includes two parallel annulus, has circular hole in the first end of each support frame 22, and each support frame 22 is logical
It crosses the circular hole and bolt arrangement is rotatably connected on two annulus of a support base 25.
Wherein, parallel annulus there are two removably setting on the pedestal of the support base 25, which can be in the branch
It supports and is relatively moved on the pedestal of seat 25, the pedestal of the support base 25 is fixedly connected in first shell 21, and bolt passes through the support
25 annulus of seat and the circular hole of 22 first end of support frame by screwing bolts and nut keep two annulus close to each other,
Support frame 22, which is fixed to, to be rotated.The support frame 22 can be rotated to the position for being fitted in the first shell 21, can also be around branch
Support seat 25 is rotated to perpendicular to first shell 21.
Before Pipeline Magnetic Flux Leakage Inspection device is put into pipeline, the fixed angle of support frame 22 is adjusted according to caliber, is made
Height where mileage wheel 23 is adapted to caliber.
In a kind of possible design, which includes: second shell 31, which is cylinder, interior
Portion is equipped with controller；The controller and 1 electric property coupling of Magnetic Flux Leakage Inspecting unit, are leaked for controlling the Magnetic Flux Leakage Inspecting unit 1
Magnetic testi；The both ends of the outer wall of the second shell 31 are set with the second rubber cup 33.
Wherein, which is the main part of control unit 3, which can be used for storing and issuing detection and refer to
Show, receive and store magnetic leakage signal, connection remote control equipment etc..Leakage magnetic detection device is walked in pipeline, when controller not
By cable connection remote control equipment, the detection instruction that controller calls it to store is sent to Magnetic Flux Leakage Inspecting unit 1, and will leakage
The magnetic leakage signal of Magnetic testi unit 1 stores, and believes after leakage magnetic detection device is dragged out from pipeline, then by the leakage field of storage
Number it is transferred to other equipment；When controller is by cable connection remote control equipment, remote control equipment is issued to controller and is examined
Instruction is surveyed, then detection instruction is issued to Magnetic Flux Leakage Inspecting unit 1 by controller, magnetic leakage signal is dealt into long-range control by controller
In equipment.
In a kind of possible design, second rubber cup 33 has radiused edges.
Wherein, which is circular ring structure, can be and is fixed by screws in second shell 31.Second
Rubber cup 33 has flexibility, and when the second shell 31 is by raised position on tube wall, which can
It can collide with tube wall, which is conducive to absorb the impact force that second shell 31 may be subject to, and makes this
Control unit 3 will not be damaged.Simultaneously as the edge of the second rubber cup 33 has the structure to front projection, the control list
When member 3 is walked in pipeline, be conducive to reduce resistance to the structure of front projection, so that walking is more smoothly, it will not be raised
It blocks.
First rubber cup 24 it is structurally and functionally similar to the second rubber cup 33, details are not described herein.
In a kind of possible design, which connects the power supply unit 2 by the first universal joint 26；It should
Power supply unit 2 connects the control unit 3 by the second universal joint 32；
First universal joint 26 and second universal joint 32 include: cross axle, the first universal-joint fork and the second universal joint
Fork；
The cross axle includes orthogonal first axle and the second axis, and the both ends of first universal-joint fork are rotatably coupled
At the both ends of the first axle, the both ends of second universal-joint fork are rotatably connected to the both ends of second axis.
Wherein, first universal joint 26 and second universal joint 32 are respectively by Magnetic Flux Leakage Inspecting unit 1, power supply unit 2 and control
Unit 3 processed is connected.
When leakage magnetic detection device is walked in the duct, for example, when running to pipeline position bending to the left, with this
The connected first axle of one Magnetic Flux Leakage Inspecting unit 1 can turn left, to make the Magnetic Flux Leakage Inspecting unit 1 relative to the power supply unit
2 turn left, to adapt to the bending of pipeline；When running to the position of duct bottom appearance protrusion, with first Magnetic Flux Leakage Inspecting
The connected first axle of unit 1 can be rotated up, so that it is rotated up the Magnetic Flux Leakage Inspecting unit 1 relative to the power supply unit 2,
To adapt to the protrusion of pipeline.Second universal joint 32 is similar with the working method of first universal joint 26, no longer goes to live in the household of one's in-laws on getting married one by one herein
It states.Therefore, which can adapt to the change of pipeline rout by first universal joint 26 and second universal joint 32
Change, so that Pipeline Magnetic Flux Leakage Inspection device is unlikely to be stuck in the knee of pipeline or overturn in concave-convex fault location, improves pipeline leakage
The stability of magnetic detection device.
All the above alternatives can form alternative embodiment of the invention using any combination, herein no longer
It repeats one by one.
It above are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Pipeline Magnetic Flux Leakage Inspection device, which is characterized in that the Pipeline Magnetic Flux Leakage Inspection device includes: sequentially connected leakage field
Detection unit (1), power supply unit (2) and control unit (3)；
The Magnetic Flux Leakage Inspecting unit (1) and described control unit (3) respectively with the power supply unit (2) electric property coupling；
The Magnetic Flux Leakage Inspecting unit (1) includes: Magnetic Flux Leakage Inspecting section (11), the first mounting disc (12), the second mounting disc (13), connection
Disk (14), multiple permanent magnets (15), multiple steel brushes (16) and multiple magnetic field sensors (17)；
The Magnetic Flux Leakage Inspecting section (11) is cylindrical body, has removably been sequentially connected with described first on the Magnetic Flux Leakage Inspecting section (11)
Mounting disc (12), second mounting disc (13) and the terminal pad (14), the terminal pad (14) is for connecting the power supply
Unit (2)；
It is circumferentially uniformly provided with multiple mounting holes (121) on the outer wall of first mounting disc (12), each permanent magnet (15) is even
One end of at least one bindiny mechanism (18) is connect, the other end of each bindiny mechanism (18) is inserted into corresponding mounting hole
(121) in, a detachably connected steel brush (16) on the outer wall of each permanent magnet (15)；
Each bindiny mechanism (18) includes: the connecting rod (181) that first end is connect with the permanent magnet (15), and is sleeved on institute
The spring (182) on connecting rod (181) is stated, the second end of the connecting rod (181) is locked to one by engaging structure (19)
In mounting hole (121), the both ends of the spring (182) respectively with the permanent magnet (15) and first mounting disc (12) phase
It supports；
The multiple magnetic field sensor (17) is circumferentially telescopically connected on the outer wall of second mounting disc (13), is used for
It carries out Magnetic Flux Leakage Inspecting and sends magnetic leakage signal to described control unit (3).
2. Pipeline Magnetic Flux Leakage Inspection device according to claim 1, which is characterized in that the locking structure (19) include:
The limit of snap ring (191) and the second end for being sleeved on the connecting rod (181) that the end of the mounting hole (121) is inwardly arranged
Ring (192), the snap ring (191) prevent the stop collar (192) abjection from the mounting hole (121) for making.
3. Pipeline Magnetic Flux Leakage Inspection device according to claim 1, which is characterized in that the locking structure (19) include:
The sliding block of the groove (193) and the side for being fixed on the connecting rod (182) that are arranged on the inner wall of the mounting hole (121)
(194), the sliding block (194) is locked in the groove (193), the groove (193) for prevent the sliding block (194) from
Abjection in the mounting hole (121).
4. Pipeline Magnetic Flux Leakage Inspection device according to claim 1, which is characterized in that along week on second mounting disc (13)
To being evenly arranged with multiple threaded holes (131)；
Each connecting plate (133) is connected in a threaded hole (131) by a threaded rod (132), each connecting plate
(133) magnetic field sensor (17) is detachably connected on.
5. Pipeline Magnetic Flux Leakage Inspection device according to claim 1, which is characterized in that the Pipeline Magnetic Flux Leakage Inspection device also wraps
It includes: anti-to ram (4)；
Anti- ram (4) include conical section (41) and the spherical segment (42) connecting with the first end of the conical section (41)；
The second end of the conical section (41) and the Magnetic Flux Leakage Inspecting section (11) are detachably connected；
The diameter of the first end of the conical section (41) is less than the diameter of the second end of the conical section (41).
6. Pipeline Magnetic Flux Leakage Inspection device according to claim 1, which is characterized in that the power supply unit (2) includes: first
Shell (21), the first shell (21) are cylinder, are hinged with multiple support frames on the outer wall of the first shell (21)
(22), the free end of each support frame (22) is equipped with a mileage wheel (23)；
Be equipped with battery inside the first shell (21), the battery respectively with the Magnetic Flux Leakage Inspecting unit (1) and the control
Unit (3) electric property coupling；
The both ends of the outer wall of the first shell (21) are set with the first rubber cup (24).
7. Pipeline Magnetic Flux Leakage Inspection device according to claim 6, which is characterized in that the power supply unit (2) further include: edge
The multiple support bases (25) being circumferentially uniformly arranged on the outer wall of the first shell (21)；
Each support base (25) includes two parallel annulus, there is circular hole in the first end of each support frame (22), described each
Support frame (22) is rotatably connected on two annulus an of support base (25) by the circular hole and bolt arrangement.
8. Pipeline Magnetic Flux Leakage Inspection device according to claim 1, which is characterized in that described control unit (3) includes: second
Shell (31), the second shell (31) are cylinder, and inside is equipped with controller；
The controller and Magnetic Flux Leakage Inspecting unit (1) electric property coupling, are leaked for controlling the Magnetic Flux Leakage Inspecting unit (1)
Magnetic testi；
The both ends of the outer wall of the second shell (31) are set with the second rubber cup (33).
9. device according to claim 8, which is characterized in that the second rubber cup (33) has radiused edges.
10. Pipeline Magnetic Flux Leakage Inspection device according to claim 1, which is characterized in that the Magnetic Flux Leakage Inspecting unit (1) passes through
First universal joint (26) connects the power supply unit (2)；
The power supply unit (2) passes through the second universal joint (32) connection described control unit (3)；
First universal joint (26) and second universal joint (32) include: cross axle, the first universal-joint fork and the 20000th
It is pitched to section；
The cross axle includes orthogonal first axle and the second axis, and the both ends of first universal-joint fork are rotatably coupled
At the both ends of the first axle, the both ends of second universal-joint fork are rotatably connected to the both ends of second axis.
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| CN201910731039.3A CN110376276B (en) | 2019-08-08 | 2019-08-08 | Pipeline magnetic leakage detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910731039.3A CN110376276B (en) | 2019-08-08 | 2019-08-08 | Pipeline magnetic leakage detection device |
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| CN110376276B CN110376276B (en) | 2022-11-04 |
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| CN110822214A (en) * | 2019-11-07 | 2020-02-21 | 中国石油天然气股份有限公司 | Pipeline detection device |
| CN112147213A (en) * | 2020-09-24 | 2020-12-29 | 中石油西北联合管道有限责任公司 | Gas transmission pipeline magnetic leakage internal detector core structure |
| CN112305064A (en) * | 2020-11-27 | 2021-02-02 | 大连环宇安迪科技有限公司 | Pipeline corrosion detection system |
| CN112344220A (en) * | 2020-11-06 | 2021-02-09 | 李赞 | Floating type magnetization detection device for leakage of oil and gas pipeline |
| CN112924538A (en) * | 2021-01-22 | 2021-06-08 | 北京埃彼咨能源科技有限公司 | Three-dimensional magnetic flux leakage imaging detector in single pipeline |
| CN114113303A (en) * | 2021-12-02 | 2022-03-01 | 国家石油天然气管网集团有限公司 | Demagnetizing adjusting device in buried pipeline |
| CN115290227A (en) * | 2022-10-10 | 2022-11-04 | 四川大学 | Method and device for detecting stress of shale gas pipeline in mountainous area |
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| CN114113303B (en) * | 2021-12-02 | 2023-08-29 | 国家石油天然气管网集团有限公司 | Demagnetizing adjusting device in buried pipeline |
| CN115290227A (en) * | 2022-10-10 | 2022-11-04 | 四川大学 | Method and device for detecting stress of shale gas pipeline in mountainous area |
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