CN108426943A - A kind of pipeline magnetic flux leakage detection device of variable-diameter - Google Patents
A kind of pipeline magnetic flux leakage detection device of variable-diameter Download PDFInfo
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- CN108426943A CN108426943A CN201810391436.6A CN201810391436A CN108426943A CN 108426943 A CN108426943 A CN 108426943A CN 201810391436 A CN201810391436 A CN 201810391436A CN 108426943 A CN108426943 A CN 108426943A
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- flux leakage
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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
- 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
- G01N27/84—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 by applying magnetic powder or magnetic ink
Abstract
The invention discloses a kind of pipeline magnetic flux leakage detection devices of variable-diameter, including variable-diameter support device, Magnetic Flux Leakage Inspecting to visit boots and universal wheel running gear.Magnetic Flux Leakage Inspecting spy boots are supported on inside pipe wall by variable-diameter support device, and so that Magnetic Flux Leakage Inspecting is visited between boots and tube wall has suitable distance to carry out Magnetic Flux Leakage Inspecting, ensures detection result.Simultaneously can active control Magnetic Flux Leakage Inspecting visit boots stretching, extension and contraction, the diameter of adjusting supporting device, to adapt to different calibers.Magnetic Flux Leakage Inspecting is visited boots and is made of detection sensor and magnetizing assembly, for detecting defect of pipeline.Passive walking of the universal wheel running gear for realizing detection device in pipeline.Magnetic Flux Leakage Inspecting visits boots and universal wheel running gear is distributed in variable-diameter support device.The present invention realizes the Magnetic Flux Leakage Inspecting of industrial variable diameters pipeline, has the advantages of adaptable to pipeline, to be convenient for manipulation.The invention simultaneously can also be connected with mobile robot in pipeline, composition automation Pipeline Magnetic Flux Leakage Inspection system.
Description
Technical field：
The invention belongs to electromagnetic nondestructive fields, are related to a kind of pipeline magnetic flux leakage detection device of variable-diameter.
Background technology：
It is largely used in fields such as power generation, metallurgy, oil, chemical industry, natural gas, the supply of city hot-water heating, building and military affairs
Various pipelines carries the transportation work of material needed for human lives, production and construction, industrial development etc., in national economy
In occupy extremely important position.In use, due to mechanical damage, corrosion and fatigue destruction and service life the problems such as,
In-service pipeline can be inevitably resulted in and the defects of apparent or potential corrosion thinning, hole, crackle occur, and if these are lacked
Sunken problem timely do not found and handled, then the later stage easily cause the accident of material leakage, to property and life security band
Carry out huge loss.
The defect non-destructive testing of pipeline mainly has leakage method, ultrasonic method, eddy-current method, electromagnetic acoustic method etc. at present.But work
Industry pipeline is located at buried underground or is erected at high-altitude mostly, and detection means is limited, and many detection methods are all difficult to realize.Example
Such as, ultrasound detection needs couplant in detection process, this is difficult to realize inside pipeline.With other pipeline common detection methods
It compares, Magnetic Flux Leakage Inspecting method has many advantages, such as that principle is simple, is easy to acquire and handle without couplant, signal, is examined in industrial pipeline
It is widely used in terms of survey.
Currently, the external equipment for Pipeline Magnetic Flux Leakage Inspection has the Pipescan corrosive pipelines of Silverwing companies of Britain
Magnetic Flux Leakage Testing System.The equipment is mainly used for detecting the corrosion of pipeline outside pipeline using the surface sweeping probe of three kinds of forms.Germany
The Magnetic Flux Leakage Inspecting pipeline pig RoCorrMFL-A of Rosen companies exploitation, the equipment are moved together with pipeline medium, leakage therein
The detection signal that Magnetic Sensor generates is recorded and stored, it can be achieved that long-distance pipe defects detection by internal storage medium.It is domestic
There are 103712066 B of CN to disclose a kind of to be useful in Magnetic Flux Leakage Inspecting outside the pipe of industrial pipeline for the Magnetic Flux Leakage Inspecting equipment of pipeline
Thus device, the device are obtained by using the detection crawl device for being equipped with leakage magnetic detection device in the movement of pipeline outer wall
The detection signal of pipeline.101988902 B of CN disclose the detection device including removable probe, which ties equipped with connection
Structure can detect the object with various diameters, while the device can also carry ultrasound and eddy current testing device.CN 1525140
A discloses oil-gas pipeline wall thickness and defect detecting system, which passes through sensor fastening device, achievable radial coarse adjustment and bullet
The components such as the axial array measuring probe that spring adaptively adjusts realize the Magnetic Flux Leakage Inspecting of pipeline inner periphery.CN 101819181
B discloses Pipeline Magnetic Flux Leakage Inspection device, and 101685064 B of CN disclose pipeline reducing diameter detecting device, and 101324477 B of CN are public
Fine definition Pipeline Magnetic Flux Leakage Inspection mechanical system is opened.These systems belong to pipeline pig type Pipeline Magnetic Flux Leakage Inspection equipment, principle
It is that the pressure pushing meanss of sealing element are moved using liquid in pipeline or gas, utilizes the Magnetic Flux Leakage Inspecting being mounted on device
The Online magnetic leakage flux inspection of equipment realization Large Diameter Pipeline, high pressure, high flow capacity pipeline.105181790 A of CN disclose a kind of efficiently leakage
Magnetic detection device and its detection method, 103837894 B of CN disclose a kind of steel tube truss device and its detection method,
Both devices are mainly used for the offline Magnetic Flux Leakage Inspecting of minor-diameter steel-tube.
On the whole, at present for pipeline Magnetic Flux Leakage Inspecting equipment application object mostly be major diameter, Large Diameter Pipeline, high pressure,
The pipeline of high flow capacity or the pipeline offline inspection of minor diameter.For medium size, the Magnetic Flux Leakage Inspecting equipment of non-high-pressure pipe
It is less.Detection device can only adapt to determine the pipeline of diameter mostly, or use passive diameter changing mechanism, and a kind of equipment is commonly used in only
It can be used for a kind of pipeline of diameter, tapered pipeline to usually require multiple devices when detecting, caliber adaptability is insufficient.Separately there is part
Equipment carries out Magnetic Flux Leakage Inspecting outside pipeline to pipeline, but the detection depth of Magnetic Flux Leakage Inspecting is shallower, the pipeline thicker to wall thickness into
The defect close to inner surface can be can't detect when row detection, lead to missing inspection.In addition, the buried underground of most pipeline or being erected at height
Sky is detected outside pipeline and has many difficulties.
Invention content：
In order to solve the above technical problem, the present invention provides a kind of pipeline magnetic flux leakage detection devices of variable-diameter.
Technical solution of the present invention is：A kind of pipeline magnetic flux leakage detection device of variable-diameter, feature exist
In：Boots and universal wheel running gear are visited including variable-diameter support device, Magnetic Flux Leakage Inspecting；
The variable-diameter support device is used to Magnetic Flux Leakage Inspecting spy boots being supported in pipeline, and being capable of active reducing；Institute
State variable-diameter support device and spring also be added being visited in the link mechanism that connect of boots with Magnetic Flux Leakage Inspecting, make Magnetic Flux Leakage Inspecting visit boots and
The connection of support device has flexibility, can reduce the impact visited when boots are contacted with tube wall to support device, additionally it is possible to make leakage field
Detection visits boots and preferably contacts tube wall；The Magnetic Flux Leakage Inspecting visits three, boots point, is separated by 120 ° and is distributed in variable-diameter support device
On, for detecting defect in pipeline；Three groups of the universal wheel walking mechanism point, is separated by 120 ° and is distributed in variable-diameter support device
On, it visits boots with Magnetic Flux Leakage Inspecting and is separated by 60 °, for realizing passive walking of the detection device in pipeline；
The reducing support device includes hexagonal frame, fore bearing end cap, forebay lid, rear bearing (ball) cover, rear machine
Frame lid, leading screw shaft coupling, spindle motor seat, spindle motor, main leading screw, bearing, long connecting rod attaching nut, short connecting rod link block,
Long connecting pin, long connection plunger, long connecting rod, short connecting rod, long connecting rod limited block, long connecting rod mobile bar, long connecting rod connector, long company
Bar spring, short connecting pin, short connection plunger；
The forebay lid and afer bay lid are fixed by screws in before and after hexagonal frame；
The spindle motor is fixed in afer bay by spindle motor seat and covers, and passes through leading screw shaft coupling and main leading screw phase
Even, power is transmitted to the opposite main leading screw of left and right thread rotary orientation, wherein main leading screw both ends are connect by bearing with front and back housing cap；
The short connecting rod link block is fixed on main leading screw intermediate step both sides by holding screw；
The long connecting rod attaching nut is connect by screw thread with main leading screw, leadscrew-nut mechanism is formed, simultaneously because main silk
Thick stick or so screw thread on the contrary, when main leading screw rotates, the long connecting rod attaching nut on both sides can simultaneously closer or far from；
The long connecting rod connects plunger by long connecting pin and long connecting rod and is connect with long connecting rod attaching nut, and short connecting rod passes through
Long connecting pin and long connecting rod connection plunger are connect with short connecting rod link block, long connecting rod by short connecting pin and short connection plunger with it is short
Connecting rod connects, and forms link mechanism；
The long connecting rod limited block is connect by screw thread with long connecting rod, and long connecting rod mobile bar leads to knot in long connecting rod one end
Movement in structure, while being limited by long connecting rod limited block, unlikely to deviate from out of long connecting rod, long connecting rod connector passes through screw thread and length
Connecting rod mobile bar connects, and visits boots for connecting Magnetic Flux Leakage Inspecting, spring, above-mentioned component are equipped between long connecting rod connector and long connecting rod
Spring_slide structure is collectively constituted, visits the flexibility that boots are connected with rack for increasing Magnetic Flux Leakage Inspecting, while spy boots being made to become to float
Formula improves and visits the tight ness rating that boots are contacted with tube wall；
The long connecting rod connector is visited boots with Magnetic Flux Leakage Inspecting by short connecting pin and short connection plunger and is connect；
It includes arc magnetic that Magnetic Flux Leakage Inspecting, which visits boots, in a kind of pipeline magnetic flux leakage detection device of above-mentioned variable-diameter, pipeline
Makeup set, sensor fastening device, Magnetic Flux Leakage Inspecting sensor, wear-resisting separation layer；
The radian of the arc magnetizing assembly is set as 60 °, and 180 ° of pipeline inner periphery can be detected in the case where being arranged 3
Pipeline range, after one-time detection, the detection of 360 ° of pipeline inner periphery may be implemented in change detection device posture.
The sensor fastening device is fixed in the arc groove of arc magnetizing assembly；
The Magnetic Flux Leakage Inspecting sensor is fixed in 5 grooves of sensor fixing device cambered surface；
The wear-resisting separation layer is attached to outside arc magnetizing assembly cambered surface, for arc magnetizing assembly and pipeline to be isolated, is avoided
Magnetizing assembly is in direct contact with pipeline.
In a kind of pipeline magnetic flux leakage detection device of above-mentioned variable-diameter, the universal wheel running gear includes wheel
Link, wheel connecting rod, wheel limited block, wheel mobile bar, wheel spring, universal wheel；
The wheel link is connect by screw with the hexagonal frame of reducing support device, and wheel connecting rod passes through
Screw is connect with wheel link；
For the wheel limited block by screw thread and wheel connecting rod, wheel mobile bar leads to knot in wheel connecting rod one end
Movement in structure, while being limited by wheel limited block, unlikely to deviate from out of wheel mobile bar, wheel mobile bar passes through with universal wheel
Nut fastens, and is detected simultaneously equipped with spring for universal wheel to be supported on tube wall between wheel connecting rod and wheel mobile bar
When device passes through tapered pipeline, the passive reducing of the flexible realization of spring can be passed through.
Beneficial effects of the present invention：1. Magnetic Flux Leakage Inspecting spy boots are supported in inner wall of the pipe by variable-diameter support device, should
Active reducing may be implemented in device under the control of motor, improves the caliber accommodation of the leakage magnetic detection device, while can
Boots are visited when ensureing Magnetic Flux Leakage Inspecting at a distance from tube wall, improve accuracy of detection；2. the long connecting rod rear end of variable-diameter support device
Spring_slide structure is added, Magnetic Flux Leakage Inspecting is increased and visits the flexibility that boots are connect with variable-diameter support device, it is possible to reduce leakage
Magnetic testi visits the rigid shock to variable-diameter support device when boots are contacted with tube wall, while spring_slide structure also examines leakage field
Probing boots become floating type, improve and visit the tight ness rating that boots are contacted with tube wall.3. Magnetic Flux Leakage Inspecting visits boots and uses cambered design, compare
Rectangular design evenly with the interval of tube wall improves magnetic efficiency of the magnetizing assembly to tube wall, while the radian for visiting boots is
60 °, in the case where being arranged three, after detection is primary, changes leakage magnetic detection device posture, the inspection of 360 ° of tube wall may be implemented
It surveys.4. universal wheel running gear point 3, is separated by 120 ° and is distributed in variable-diameter support device, universal wheel and variable-diameter branch
Spring_slide structure is additionally provided between support arrangement, it, can be passive by the flexible realization of spring when detection device passes through tapered pipeline
Reducing.
Description of the drawings：
Fig. 1 is the overall structure stereogram of the embodiment of the present invention.
Fig. 2 is the variable-diameter support device of the embodiment of the present invention, Magnetic Flux Leakage Inspecting visits boots, the assembly of universal wheel running gear is closed
It is stereogram.
Fig. 3 is the structural perspective of the variable-diameter support device of the embodiment of the present invention.
Fig. 4 is each design of part stereogram of the variable-diameter support device of the embodiment of the present invention.
Fig. 5 is the link mechanism stereogram of the variable-diameter support device of the embodiment of the present invention.
Fig. 6 is the slide block mechanism stereogram of the variable-diameter support device of the embodiment of the present invention.
Fig. 7 is that the Magnetic Flux Leakage Inspecting of the embodiment of the present invention visits the structural perspective of boots.
Fig. 8 is that the Magnetic Flux Leakage Inspecting of the embodiment of the present invention visits each design of part stereogram of boots.
Fig. 9 is the structural perspective of the universal wheel running gear of the embodiment of the present invention.
Figure 10 is each design of part stereogram of the universal wheel running gear of the embodiment of the present invention.
In figure：1, variable-diameter support device, 2, Magnetic Flux Leakage Inspecting visit boots, 3, universal wheel running gear, 101, front axle socket end
Lid, 102, forebay lid, 103, hexagonal frame, 104, main leading screw, 105, long connecting rod nut, 106, long connecting rod, 107, short company
Bar, 108, short connecting rod link block, 109, afer bay lid, 110, rear bearing (ball) cover, 111, spindle motor seat, 112, leading screw shaft coupling
Device, 113, spindle motor, 114, long connecting rod spring, 115, long connecting rod connector, 116, long connecting rod mobile bar, 117, long connecting rod limit
Position block, 118, short connection plunger, 119, short connecting pin, 120, long connecting pin, 121, long connection plunger, 122, bearing, 123, spiral shell
Nail, 201, arc magnetizing assembly, 202, wear-resisting separation layer, 203, sensor fastening device, 204, Magnetic Flux Leakage Inspecting sensor, 301,
Wheel link, 302, wheel connecting rod, 303, wheel spring, 304, wheel limited block, 305, wheel mobile bar, 306, universal
Wheel, 307, screw, 308, nut.
Specific embodiment：
For convenience those skilled in the art understand that with the present invention is implemented, below in conjunction with the accompanying drawings and implement example to the present invention
It is described in further detail, it should be understood that implementation example described herein is merely to illustrate and explain the present invention, and is not had to
It is of the invention in limiting.
See Fig. 1 and Fig. 2, a kind of pipeline magnetic flux leakage detection device of variable-diameter provided by the invention, including can straighten
Diameter support device 1, Magnetic Flux Leakage Inspecting visit boots 2 and universal wheel walking mechanism 3；Variable-diameter support device 1 is for visiting Magnetic Flux Leakage Inspecting
Boots 2 are supported in pipeline, have the characteristics that active reducing and, and make Magnetic Flux Leakage Inspecting visit boots 2 and variable-diameter support device 1 company
It connects with flexibility；Magnetic Flux Leakage Inspecting visits boots 2 and divides three, is separated by 120 ° and is distributed in variable-diameter support device 1, for detecting pipeline
Interior defect；Universal wheel walking mechanism 3 divides three groups, is separated by 120 ° and is distributed in variable-diameter support device 1, and boots are visited with Magnetic Flux Leakage Inspecting
2 are separated by 60 °, for realizing passive walking of the detection device in pipeline.
See Fig. 3, Fig. 4, Fig. 5 and Fig. 6, variable-diameter support device 1 of the invention includes fore bearing end cap 101, preceding machine
Frame lid 102, hexagonal frame 103, main leading screw 104, long connecting rod nut 105, long connecting rod 106, short connecting rod 107, short connecting rod connection
Block 108, afer bay lid 109, rear bearing (ball) cover 110, spindle motor seat 111, leading screw shaft coupling 112, spindle motor 113, long company
Bar spring 114, long connecting rod connector 115, long connecting rod mobile bar 116, long connecting rod limited block 117, short connection plunger 118, short company
Outbound 119, long connecting pin 120, long connection plunger 121；Forebay lid 102 and afer bay lid 109 are fixed on six by screw 123
Before and after side shape rack 103；Spindle motor 113 is fixed on afer bay lid 109 by spindle motor seat 111, and is joined by leading screw
Axis device 112 is connected with main leading screw 104, power is transmitted to the opposite main leading screw 104 of left and right thread rotary orientation, wherein 104 liang of main leading screw
End is connect by bearing 122 with forebay lid 102 and afer bay lid 109；Short connecting rod link block 108 is fixed on by holding screw
104 intermediate step both sides of main leading screw；Long connecting rod attaching nut 105 is connect by screw thread with main leading screw 104, and feed screw nut machine is formed
Structure, simultaneously because 104 or so screw thread of main leading screw is on the contrary, when main leading screw rotates, the long connecting rod attaching nut 105 on both sides can be simultaneously
Closer or far from；Long connecting rod 106 is connect by long connecting pin 120 and long connection plunger 121 with long connecting rod attaching nut 105, short
Connecting rod 107 is connect by long connecting pin 120 and long connection plunger 121 with short connecting rod link block 108, and long connecting rod 106 passes through short company
Outbound 119 and short connection plunger 118 are connect with short connecting rod 107, form link mechanism；Long connecting rod limited block 117 by screw thread with
Long connecting rod 106 connects, and long connecting rod mobile bar 116, which is led in 106 one end of long connecting rod in structure, to be moved, while being limited by long connecting rod
The limit of block 117, the unlikely abjection out of long connecting rod 106, long connecting rod connector 115 are connected by screw thread and long connecting rod mobile bar 116
It connects, visits boots for connecting Magnetic Flux Leakage Inspecting, spring 114 is equipped between long connecting rod connector 115 and long connecting rod 106, above-mentioned component is total
With composition spring_slide structure, the flexibility that boots are connected with rack is visited for increasing Magnetic Flux Leakage Inspecting, while spy boots being made to become floating type,
It improves and visits the tight ness rating that boots are contacted with tube wall；Long connecting rod connector 115 by short connecting pin 119 and short connection plunger 118 with
Magnetic Flux Leakage Inspecting is visited boots 2 and is connected.
See Fig. 7 and Fig. 8, leakage magnetic detection device 2 of the invention, including arc magnetizing assembly 201, sensor fastening device
203, Magnetic Flux Leakage Inspecting sensor 204, wear-resisting separation layer 202；Sensor fastening device 203 is fixed on arc magnetizing assembly 201
In arc groove；Magnetic Flux Leakage Inspecting sensor 204 is fixed in 5 grooves of 203 cambered surface of sensor fixing device；Wear-resisting separation layer
202 are attached to outside 201 face of arc magnetizing assembly arc, for arc magnetizing assembly 201 and pipeline to be isolated, avoid magnetizing assembly and pipeline
It is in direct contact.
See Fig. 9 and Figure 10, universal wheel running gear of the invention, including wheel link 301, wheel connecting rod 302,
Wheel limited block 304, wheel mobile bar 305, wheel spring 303, universal wheel 306；Wheel link 301 by screw 307 with
The hexagonal frame 103 of reducing support device connects, and wheel connecting rod 302 is connected by 308 screws and wheel link 301
It connects；Wheel limited block 304 is by screw thread and wheel connecting rod 302, and wheel mobile bar 305 is in 302 one end of wheel connecting rod
Movement in logical structure, while by the limit of wheel limited block 304, unlikely abjection, wheel mobile bar out of wheel mobile bar 302
305 are fastened with universal wheel 306 by nut 308, and spring 303 is equipped between wheel connecting rod 302 and wheel mobile bar 305, are used
It is supported on tube wall in by universal wheel 306, while when detection device passes through tapered pipeline, it can be passive by the flexible realization of spring
Reducing.
The operation principle of the present invention is that：
The present invention is for Magnetic Flux Leakage Inspecting in pipeline, since the equipment is unpowered Magnetic Flux Leakage Inspecting equipment, in forebay lid 102
On load onto the attachment devices such as universal joint after, can be moved in pipeline by mobile robot dragging in manpower or pipeline.
In straight tube, variable-diameter pipeline magnetic flux leakage detection device central axis is overlapped with conduit axis, and robot is by people
The power that mobile robot provides in power or pipeline can be transported using universal wheel running gear 3 as walking mechanism in straight tube
It is dynamic.When encountering the tube environments such as reducer pipe, obstacle, bend pipe, universal wheel running gear 2 is under the effect of external force to pipeline axle center
It draws close, wheel mobile bar 305, which is led in 302 one end of wheel connecting rod in structure, to be moved, and wheel spring 303 compresses, universal wheel
Walking mechanism adapts to caliber under the effect of external force.After robot passes by reducer pipe, obstacle, bend pipe, 305 He of wheel mobile bar
Wheel spring 303 restores, and universal wheel running gear 2 is unfolded, and robot continues to travel in pipeline.
When variable-diameter pipeline magnetic flux leakage detection device is without detection, spindle motor 113 passes through leading screw shaft coupling 112
It drives main leading screw 104 to move, adjusts long connecting rod nut 105 and move out simultaneously；Long connecting rod nut 105 drive by long connecting rod 106,
The link mechanism of the compositions such as short connecting rod 107 collapses Magnetic Flux Leakage Inspecting spy boots 2, and avoiding Magnetic Flux Leakage Inspecting from visiting boots 2 influences robot motion.
When variable-diameter pipeline magnetic flux leakage detection device detects, spindle motor 113 drives main leading screw 104 by leading screw shaft coupling 112
Movement adjusts the inwardly movement simultaneously of long connecting rod nut 105, and link mechanism stretches Magnetic Flux Leakage Inspecting spy boots 2, and Magnetic Flux Leakage Inspecting is visited boots
2 are supported on tube wall, carry out Magnetic Flux Leakage Inspecting.
Although this specification has more used variable-diameter support device 1, Magnetic Flux Leakage Inspecting to visit boots 2, universal wheel walking dress
Set 3, fore bearing end cap 101, forebay lid 102, hexagonal frame 103, main leading screw 104, long connecting rod nut 105, long connecting rod
106, short connecting rod 107, short connecting rod link block 108, afer bay lid 109, rear bearing (ball) cover 110, spindle motor seat 111, leading screw connection
Axis device 112, spindle motor 113, long connecting rod spring 114, long connecting rod connector 115, long connecting rod mobile bar 116, long connecting rod limit
Block 117, short connection plunger 118, short connecting pin 119, long connecting pin 120, long connection plunger 121, bearing 122, screw 123, arc
Shape magnetizing assembly 201, wear-resisting separation layer 202, sensor fastening device 203, Magnetic Flux Leakage Inspecting sensor 204, wheel link
301, wheel connecting rod 302, wheel spring 303, wheel limited block 304, wheel mobile bar 305, universal wheel 306, screw 307,
The terms such as nut 308, but the possibility using other terms is not precluded.The use of these items is only for more easily retouch
The essence for stating the present invention, is construed as any one of the additional limitations and is all disagreed with spirit of that invention.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
It should be understood that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this
The limitation of invention patent protection range, those skilled in the art under the inspiration of the present invention, are not departing from power of the present invention
Profit requires under protected ambit, can also make replacement or deformation, each fall within protection scope of the present invention, this hair
It is bright range is claimed to be determined by the appended claims.
Claims (3)
1. a kind of pipeline magnetic flux leakage detection device of variable-diameter, it is characterised in that：Including variable-diameter support device (1), leakage
Magnetic testi visits boots (2) and universal wheel running gear (3)；
The variable-diameter support device (1) is used to Magnetic Flux Leakage Inspecting visiting boots (2) and be supported in pipeline, and being capable of active reducing；
The variable-diameter support device (1) is also visiting addition spring (114) in the link mechanism that boots (2) are connect with Magnetic Flux Leakage Inspecting, makes
Magnetic Flux Leakage Inspecting, which visits boots (2) and the connection of support device (1), has flexibility, can reduce and visit when boots (2) are contacted with tube wall to support
The impact of device, additionally it is possible to make Magnetic Flux Leakage Inspecting visit boots (2) and preferably contact tube wall；The Magnetic Flux Leakage Inspecting visits three, boots (2) point, phase
It is distributed in variable-diameter support device (1) every 120 °, for detecting defect in pipeline；The universal wheel walking mechanism (3) point
Three groups, it is separated by 120 ° and is distributed in variable-diameter support device (1), visiting boots (2) with Magnetic Flux Leakage Inspecting is separated by 60 °, for realizing inspection
Survey passive walking of the device in pipeline；
The reducing support device includes hexagonal frame (103), fore bearing end cap (101), forebay lid (102), rear axle
Socket end lid (110), afer bay lid (109), leading screw shaft coupling (112), spindle motor seat (111), spindle motor (113), main silk
Thick stick (104), bearing (122), long connecting rod attaching nut (105), short connecting rod link block (108), long connecting pin (120), long connection
Plunger (121), long connecting rod (106), short connecting rod (107), long connecting rod limited block (117), long connecting rod mobile bar (116), long connecting rod
Connector (115), long connecting rod spring (114), short connecting pin (119), short connection plunger (118)；
The forebay lid (102) and afer bay lid (109) are fixed on by screw (123) before and after hexagonal frame (103)；
The spindle motor (113) is fixed in by spindle motor seat (111) on afer bay lid (109), and passes through leading screw shaft coupling
Device (112) is connected with main leading screw (104), power is transmitted to the opposite main leading screw (104) of left and right thread rotary orientation, wherein main leading screw
(104) both ends are connect by bearing (122) with forebay lid (102) and afer bay lid (109)；
The short connecting rod link block (108) is fixed on main leading screw (104) intermediate step both sides by holding screw；
The long connecting rod attaching nut (105) is connect by screw thread with main leading screw (104), composition leadscrew-nut mechanism, while by
In main leading screw or so screw thread on the contrary, when main leading screw (104) rotates, the long connecting rod attaching nut (105) on both sides can be close simultaneously
Or it is separate；
The long connecting rod (106) connects plunger (121) and long connecting rod attaching nut by long connecting pin (120) and long connecting rod
(105) it connects, short connecting rod (107) connects plunger (121) and short connecting rod link block by long connecting pin (120) and long connecting rod
(108) it connects, long connecting rod (106) is connect by short connecting pin (119) and short connection plunger (118) with short connecting rod (107), is formed
Link mechanism；
The long connecting rod limited block (117) is connect by screw thread with long connecting rod (106), and long connecting rod mobile bar (116) is in long connecting rod
(106) lead to movement in structure in one end, while by the limit of long connecting rod limited block (117), it is unlikely to be taken off out of long connecting rod (106)
Going out, long connecting rod connector (115) is connect by screw thread with long connecting rod mobile bar (116), and boots (2) are visited for connecting Magnetic Flux Leakage Inspecting,
Spring is equipped between long connecting rod connector (115) and long connecting rod (106), above-mentioned component collectively constitutes spring_slide structure, is used for
Increase Magnetic Flux Leakage Inspecting spy boots (2) and connect the flexibility of (103) with hexagonal frame, while spy boots being made to become floating type, improves spy
The tight ness rating that boots are contacted with tube wall；
The long connecting rod connector (115) visits boots (2) by short connecting pin (119) and short connection plunger (118) with Magnetic Flux Leakage Inspecting
Connection.
2. a kind of pipeline magnetic flux leakage detection device of variable-diameter according to claim 1, it is characterised in that：Leakage in pipeline
Magnetic testi visit boots (2) include arc magnetizing assembly (201), it is sensor fastening device (203), Magnetic Flux Leakage Inspecting sensor (204), resistance to
Grind separation layer (202)；
The radian of the arc magnetizing assembly (201) is set as 60 °, and pipeline inner periphery can be detected in the case where being arranged 3
180 ° of pipeline range, after one-time detection, the detection of 360 ° of pipeline inner periphery may be implemented in change detection device posture；
The sensor fastening device (203) is fixed in the arc groove of arc magnetizing assembly (201)；
The Magnetic Flux Leakage Inspecting sensor (204) is fixed in 5 grooves of sensor fastening device cambered surface (203)；
The wear-resisting separation layer (202) is attached to outside arc magnetizing assembly (201) cambered surface, for arc magnetizing assembly and pipe to be isolated
Road avoids magnetizing assembly from being in direct contact with pipeline.
3. a kind of pipeline magnetic flux leakage detection device of variable-diameter according to claim 1, it is characterised in that：Universal wheel row
Walking apparatus (3) include wheel link (301), wheel connecting rod (302), wheel limited block (304), wheel mobile bar (305),
Wheel spring (303), universal wheel (306)；
The wheel link (301) is connect by screw (307) with the hexagonal frame (103) of reducing support device (1),
Wheel connecting rod (302) is connect by screw with wheel link (301)；
The wheel limited block (304) is by screw thread and wheel connecting rod (302), and wheel mobile bar (305) is in wheel connecting rod
(302) lead to movement in structure in one end, while by the limit of wheel limited block (304), it is unlikely out of wheel mobile bar (305)
Abjection, wheel mobile bar (305) are fastened with universal wheel (306) by nut (308), wheel connecting rod (302) and wheel movement
Spring is equipped between bar (305), for universal wheel (306) to be supported on tube wall, while when detection device passes through tapered pipeline,
The passive reducing of the flexible realization of spring can be passed through.
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| CN109342550A (en) * | 2018-09-17 | 2019-02-15 | 西华大学 | Small diameter pipeline leakage magnetic detection device |
| CN109738520A (en) * | 2019-01-04 | 2019-05-10 | 陈英锋 | A kind of new-type pipeline and container damage detection device |
| CN110118820A (en) * | 2019-06-11 | 2019-08-13 | 智云安科技(北京)有限公司 | A kind of pipeline high-definition magnetic leakage detection device |
| CN110579529A (en) * | 2019-10-17 | 2019-12-17 | 浙江越新检测技术有限公司 | Supporting device for pipeline magnetic flux leakage detection probe |
| CN110887510A (en) * | 2019-12-10 | 2020-03-17 | 湖南博锐泰仪表有限公司 | Flexible anticorrosive magnetostrictive probe of poly tetrachloroethylene |
| CN111595934A (en) * | 2020-06-06 | 2020-08-28 | 广东省特种设备检测研究院 | Magnetic flux leakage intelligent detection system based on Internet of things |
| CN113155955A (en) * | 2021-05-25 | 2021-07-23 | 江苏省特种设备安全监督检验研究院 | Detection device and detection method for carbon fiber wound hydrogen storage cylinder liner |
| CN113406195A (en) * | 2021-05-25 | 2021-09-17 | 江苏省特种设备安全监督检验研究院 | Device and method for detecting inner container of hydrogen storage cylinder based on single-coil probe |
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| CN117517465A (en) * | 2024-01-05 | 2024-02-06 | 山东中能节能科技有限公司 | Nondestructive testing equipment for large steel pipe |
| CN113155955B (en) * | 2021-05-25 | 2024-04-26 | 江苏省特种设备安全监督检验研究院 | Detection device and detection method for carbon fiber wound hydrogen storage cylinder liner |
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| CN109342550A (en) * | 2018-09-17 | 2019-02-15 | 西华大学 | Small diameter pipeline leakage magnetic detection device |
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| CN110118820A (en) * | 2019-06-11 | 2019-08-13 | 智云安科技(北京)有限公司 | A kind of pipeline high-definition magnetic leakage detection device |
| CN110579529A (en) * | 2019-10-17 | 2019-12-17 | 浙江越新检测技术有限公司 | Supporting device for pipeline magnetic flux leakage detection probe |
| CN110887510A (en) * | 2019-12-10 | 2020-03-17 | 湖南博锐泰仪表有限公司 | Flexible anticorrosive magnetostrictive probe of poly tetrachloroethylene |
| CN111595934A (en) * | 2020-06-06 | 2020-08-28 | 广东省特种设备检测研究院 | Magnetic flux leakage intelligent detection system based on Internet of things |
| CN113155955A (en) * | 2021-05-25 | 2021-07-23 | 江苏省特种设备安全监督检验研究院 | Detection device and detection method for carbon fiber wound hydrogen storage cylinder liner |
| CN113406195A (en) * | 2021-05-25 | 2021-09-17 | 江苏省特种设备安全监督检验研究院 | Device and method for detecting inner container of hydrogen storage cylinder based on single-coil probe |
| CN113155955B (en) * | 2021-05-25 | 2024-04-26 | 江苏省特种设备安全监督检验研究院 | Detection device and detection method for carbon fiber wound hydrogen storage cylinder liner |
| CN116146823A (en) * | 2022-12-14 | 2023-05-23 | 北华航天工业学院 | But two-way movement's small-bore pipeline detects magnet festival |
| CN116146823B (en) * | 2022-12-14 | 2023-10-24 | 北华航天工业学院 | But two-way movement's small-bore pipeline detects magnet festival |
| CN116773648A (en) * | 2023-06-30 | 2023-09-19 | 国网江苏省电力有限公司泰州供电分公司 | Crawling detection device and method for transformer substation structure support |
| CN117517465A (en) * | 2024-01-05 | 2024-02-06 | 山东中能节能科技有限公司 | Nondestructive testing equipment for large steel pipe |
| CN117517465B (en) * | 2024-01-05 | 2024-03-26 | 山东中能节能科技有限公司 | Nondestructive testing equipment for large steel pipe |
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