CN103868984B - Ground high pressure pipe joint internal surface damage detecting device - Google Patents
Ground high pressure pipe joint internal surface damage detecting device Download PDFInfo
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- CN103868984B CN103868984B CN201410105532.1A CN201410105532A CN103868984B CN 103868984 B CN103868984 B CN 103868984B CN 201410105532 A CN201410105532 A CN 201410105532A CN 103868984 B CN103868984 B CN 103868984B
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Abstract
The present invention is a kind of ground high pressure pipe joint internal surface damage detecting device, this detecting device includes cylindrical structural frame, this structure-steel framing is evenly equipped with multiple radially-directed groove along its circumference, being provided with a guide pad in each gathering sill slidably, guide pad top is stretched out gathering sill and is positioned on the periphery of structure-steel framing；Guide pad end face is provided with Magnetic Memory sensor, is provided with elasticity and shores element between guide pad bottom surface and the bottom land of gathering sill；Gathering sill is provided with restricted guidance block and departs from the limiting section of gathering sill；The axial two ends of structure-steel framing are fixed with an end cap respectively, and the circumferential outer rim along each end cap is provided with multiple axially directed take turns.This device adopts Magnetic Memory sensor, by detecting the change of metal tube inwall magnetic memory signal, manifold carries out flaw detection location；Can guarantee that conjunction manifold inwall is close to by Magnetic Memory sensor such that it is able to obtaining magnetic memory signal more accurately, detection accuracy is higher.This apparatus structure is simple, mobile flexibly, it is possible to small size straight tube or bend pipe are detected a flaw.
Description
Technical field
The present invention is about a kind of pipeline flaw detection device, particularly relates to a kind of by the magnetic memory signal of inner-walls of duct is acquired, is analyzed, and then the ground high pressure pipe joint internal surface damage detecting device that the damage location of pipeline is detected a flaw, positioned.
Background technology
Pipe fitting is applied to the industry such as oil, chemical industry mostly, these pipe fitting majorities will bear high pressure, high torsion, and want long term corrosive gas, liquid environment in, these environment infringement especially severe to pipeline, if pipe interior has any defect, it will cause serious accident.So pipe fitting being carried out regular detection and flaw detection is very important.Inspection technique conventional at present has X ray, gamma-rays, ultrasound wave.The person can be caused serious injury by X ray, gamma-rays, and the flaw detection of both modes is required for thick stereotype housing, so causing equipment volume big, uses very inconvenient.Additionally X ray can produce a lot of heats, the problem such as cause service life of equipment short.Current ultrasonic test equipment, is also that structure is complicated mostly, and floor space is big, and precision is not high.And pipe fitting flaw detection at present all uses these three mode mostly so that detection technique repeats, it is difficult to pipe fitting is more fully detected.
Application number is the utility model of 201220204350.6 is a kind of online pipeline flaw detection device utilizing eddy current inspection, namely ferromagnetic pipe fitting is when by eddy current flaw detec, magnetized by alternating magnetic field, eddy current is formed at outer surface of pipe fittings, when body is defective, electric current in eddy current loop can change, thus causing that the alternating magnetic field vertical with eddy current magnetism also changes, thus detecting defect.But this vortex flow formed in ac magnetization process has kelvin effect, so what detect can only be the damage of outer surface of pipe fittings；And the defect of pipeline is usually and starts from inside, so the detection accuracy of above-mentioned existing apparatus is not high, and bend pipe can not be well detected by this existing apparatus.
Thus, the present inventor is by experience and the practice of being engaged in relevant industries for many years, it is proposed to a kind of ground high pressure pipe joint internal surface damage detecting device, to overcome the defect of prior art.
Summary of the invention
It is an object of the invention to provide a kind of ground high pressure pipe joint internal surface damage detecting device, be, from inner surface of pipeline, pipeline is carried out nondestructive inspection；By the magnetic memory signal of pipeline damaged part is detected, analyzes, thus the damaged part to pipeline is detected a flaw, positioned.
Another object of the present invention is to provide a kind of ground high pressure pipe joint internal surface damage detecting device, by regulating the effect of spring, enable magnetic probe to be fitted in inner-walls of duct closely, thus pipeline being carried out flaw detection accurately, location.
A further object of the present invention is in that to provide a kind of ground high pressure pipe joint internal surface damage detecting device, and this device is light, flexible, and simple in construction, size are little, it is possible to for the Non-Destructive Testing of small size straight tube and bend pipe.
The object of the present invention is achieved like this, a kind of ground high pressure pipe joint internal surface damage detecting device, described detecting device includes cylindrical structural frame, this structure-steel framing is evenly equipped with multiple radially-directed groove along its circumference, being provided with a guide pad in each gathering sill slidably, described guide pad top is stretched out gathering sill and is positioned on the periphery of structure-steel framing；Described guide pad end face is provided with Magnetic Memory sensor, is provided with elasticity and shores element between described guide pad bottom surface and the bottom land of gathering sill；Described gathering sill is provided with restricted guidance block and departs from the limiting section of gathering sill；The axial two ends of described structure-steel framing are fixed with an end cap respectively, and the circumferential outer rim along described each end cap is provided with multiple axially directed take turns.
In a better embodiment of the present invention, described gathering sill is that bottom surface is rectangular and cell body axially through structure-steel framing two ends；Described guide pad is the slide mass that cross section is T-shaped；Described guide pad is made up of sliding part and the supporting part for installing described Magnetic Memory sensor, and described supporting part is integrally connected to above sliding part；The width of described sliding part is identical with the width of gathering sill, the width of described supporting part is more than the width of gathering sill, the length of sliding part and supporting part is respectively less than the length of gathering sill, and the projection one respectively of the axial two ends bottom described sliding part can be arranged in the block of limiting section.
In a better embodiment of the present invention, described structure-steel framing be axially arranged with centre bore；The bottom land of each gathering sill is provided with through the radial through holes of described centre bore；The end face of described supporting part is provided with a deep gouge, and described Magnetic Memory sensor is fixedly installed in described deep gouge；Described guide pad is provided with the through hole through to guide pad bottom surface by the bottom land of deep gouge, and described radial through holes is corresponding with the center of described through hole.
In a better embodiment of the present invention, described guide pad bottom surface is provided with the first counterbore, and the bottom land of described gathering sill is provided with the second counterbore, and it is the compression spring being arranged in the first relative counterbore and the second counterbore that described elasticity shores element.
In a better embodiment of the present invention, described first counterbore and the second counterbore are oppositely arranged two respectively.
In a better embodiment of the present invention, described end cap is made up of the connecting portion being fixedly connected on structure-steel framing end outer rim and the end cap body being positioned at connecting portion side；Described end cap central is provided with axial center hole.
In a better embodiment of the present invention, the limiting section that described each gathering sill is arranged is made up of the connecting portion of end cap.
In a better embodiment of the present invention, the periphery of described end cap body is provided with an annular groove；The periphery of end cap body is also uniformly provided with multiple axially arranged separate slot；The plurality of axially directed wheel is arranged in corresponding separate slot, is provided with a retainer ring in described annular groove, and described retainer ring is arranged in multiple axially directed core wheel taken turns.
From the above mentioned, ground of the present invention high pressure pipe joint internal surface damage detecting device, adopt Magnetic Memory sensor, by detecting the change of metal tube inwall magnetic memory signal, manifold carries out flaw detection location；It is uniformly distributed six Magnetic Memory sensors along structure-steel framing hoop, each sensor can be made at hoop, radially, axially flexible, ensure that Magnetic Memory sensor can be good at laminating manifold inwall such that it is able to obtaining more accurate magnetic memory signal, detection accuracy is higher.The present invention adopts six wheeled constructions, it is possible to ensure that detecting device is when manifold inwall is close to by Magnetic Memory sensor, in the internal smooth and easy operation of manifold.The detecting device size of the present invention is little, light weight, simple in construction, it is possible to move flexibly, easy to use, both can small size straight tube be detected a flaw, it is possible to small size bend pipe is detected a flaw.
Accompanying drawing explanation
The following drawings is only intended to, in the present invention being schematically illustrated and explaining, not delimit the scope of the invention.Wherein:
Fig. 1: for the structural representation of ground of the present invention high pressure pipe joint internal surface damage detecting device.
Fig. 2: for the sectional structure schematic diagram of Fig. 1.
Fig. 3: for the decomposition texture schematic diagram of Fig. 1.
Fig. 4: for the structural representation of structure-steel framing in the present invention.
Fig. 5 A: for the structural representation of guide pad in the present invention.
Fig. 5 B: look up structural representation for Fig. 5 A.
Fig. 5 C: for the side-looking structural representation of Fig. 5 A.
Fig. 6: for the structural representation of end cap in the present invention.
Fig. 7: the schematic diagram detected in the duct for the ground high pressure pipe joint internal surface damage detecting device of the present invention.
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and effect are more clearly understood from, now comparison accompanying drawing illustrates the specific embodiment of the present invention.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention proposes a kind of ground high pressure pipe joint internal surface damage detecting device 100, described detecting device 100 includes cylindrical structural frame 1, this structure-steel framing 1 is evenly equipped with multiple radially-directed groove 11(as shown in Figure 4 along its circumference), being provided with a guide pad 2 in each gathering sill 11 slidably, described guide pad 2 top is stretched out gathering sill 11 and is positioned on the periphery of structure-steel framing 1；It can be arc corresponding with inner-walls of duct that described guide pad 2 end face is provided with the top of Magnetic Memory sensor 3(Magnetic Memory sensor), it is provided with elasticity between described guide pad 2 bottom surface and the bottom land of gathering sill 11 and shores element 4；Described gathering sill 11 is provided with restricted guidance block 2 and departs from the limiting section of gathering sill 11；The axial two ends of described structure-steel framing 1 are fixed with an end cap 5 respectively, and the circumferential outer rim along described each end cap 5 is provided with multiple axially directed takes turns 6.
In the present embodiment, the physical dimension of described ground high pressure pipe joint internal surface damage detecting device, set according to the physical dimension of the manifold detected, for instance: the diameter of structure-steel framing is less than the internal diameter of tested pipeline.In the high pressure pipe joint internal surface damage detecting device of described ground, circumference along structure-steel framing is evenly equipped with multiple Magnetic Memory sensor (in the present embodiment, described gathering sill, guide pad and Magnetic Memory sensor are correspondingly provided with six respectively), to form corresponding sonde configuration, (metal magnetic memory principle and ferrimagnet are before fatigue and breakage for principle according to metal magnetic memory test, there is stress concentration effect in capital, owing to the impact in earth's magnetic field and the magnetic domain tissue of metal material change, change is freeed in the magnetic field making surrounding materials, this change is after material deformation-recovery, without disappearance, the state of metal material is judged thereby through the magnetic field detecting metallic perimeter.), undertaken detecting, analyzing by gathering the Magnetic Memory characteristic signal of tested pipeline inwall, thus realizing the damaged part of pipeline is detected a flaw, positioned；Before manifold detection, it is not necessary to manifold is magnetized and clears up, easy to use；Owing to arranging guide pad in each gathering sill slidably, and be provided with elasticity between guide pad bottom surface and the bottom land of gathering sill and shore element, thus, guide pad is made to move along gathering sill to structure-steel framing outer radial, ensure that Magnetic Memory sensor is well fitted manifold inwall, more accurately detect signal to obtain；Owing to end cap that structure-steel framing two ends are fixing is provided with multiple axially directed take turns, when this detecting device uses, driven by outside haulage gear, it is possible to ensure its smooth and easy movement in pipeline；On the structure-steel framing and guide pad of device, it is both provided with corresponding through hole, through hole is for guiding wire, is drawn from through hole by the wire of each Magnetic Memory sensor, then draws from the centre bore of structure-steel framing, through pipeline, thus passing signal measured by Magnetic Memory sensor back computer, it addition, centre bore is also for drawing haulage chain, manually or haulage gear drag, detecting device is drawn from the opposite side of manifold.The ground high pressure pipe joint internal surface damage detecting device of present embodiment, its simple in construction, easy to operate, and it is small and exquisite, flexible, both the straight tube of small size ferromagnetism material can be detected a flaw, as shown in Figure 7, also small size bend pipe 9 can be detected a flaw (in the present embodiment, described bend pipe 9 refers to the angle of bend bend pipe be more than or equal to 90 degree).
Further, as shown in Figure 4, in the present embodiment, described gathering sill 11 is that bottom surface is rectangular and cell body axially through structure-steel framing 1 two ends；Described guide pad 2 is the T-shaped slide mass (as shown in Fig. 5 A～Fig. 5 C) of cross section；Described guide pad 2 is made up of sliding part 21 and the supporting part 22 for installing described Magnetic Memory sensor 3, and described supporting part 22 is integrally connected to above sliding part 21；The width of described sliding part 21 is identical with the width of gathering sill 11, the width of described supporting part 22 is more than the width of gathering sill 11, the length of sliding part 21 and supporting part 22 is respectively less than the length of gathering sill 11, and the projection one respectively of the axial two ends bottom described sliding part 21 can be arranged in the block 211 of limiting section.Described limiting section can be fixedly mounted at the limited block (not shown) of described gathering sill 11 both upper ends thereof, when sliding part 21 by elasticity shore element 4 act on and move up along gathering sill 11 time, described limited block keeping out block 211 can be passed through, it is to avoid guide pad 2 removes and departs from gathering sill 11.
As shown in Figure 4, described structure-steel framing 1 be axially arranged with centre bore 12；The bottom land of each gathering sill 11 is provided with through the radial through holes 121 of described centre bore 12；As shown in Figure 5A, the end face of described supporting part 22 is provided with a deep gouge 221, and described Magnetic Memory sensor 3 is fixedly installed in described deep gouge 221；Described guide pad 2 is provided with the through hole 23 that the bottom land by deep gouge 221 is through to guide pad bottom surface, described radial through holes 121 is corresponding with the center of described through hole 23, by described centre bore 12, radial through holes 121 and through hole 23, it is possible to guide the holding wire of each Magnetic Memory sensor 3 described.
As shown in Fig. 4, Fig. 5 A and Fig. 5 B, in the present embodiment, described guide pad 2 bottom surface is provided with two the first counterbores 24, bottom land correspondence said two first counterbore 24 of described gathering sill 11 is provided with two the second counterbores 111, and it is the compression spring (as shown in Figure 3) being arranged in the first relative counterbore 24 and the second counterbore 111 that described elasticity shores element 4；Owing to compression spring self can have swing, and the length of the sliding part 21 of guide pad is less than the length of gathering sill 11, and therefore, described guide pad 2 also is able to axially slightly adjusting along structure-steel framing 1.
Further, as shown in Fig. 3, Fig. 6, in the present embodiment, described end cap 5 is made up of the connecting portion 51 being fixedly connected on structure-steel framing 1 end outer rim and the end cap body 52 being positioned at connecting portion side；Described end cap 5 center also is provided with axial center hole 53, for wearing the holding wire of each Magnetic Memory sensor 3 described.The limiting section arranged on described each gathering sill 11 can be made up of the connecting portion 51 of end cap, as shown in Figure 1 and Figure 2, after end cap 5 is fixedly connected on structure-steel framing 1 end outer rim, connecting portion 51 is located exactly at each gathering sill 11 both upper ends thereof, when sliding part 21 is moved up along gathering sill 11 by compression spring effect, by described connecting portion 51, block 211 is kept out, such that it is able to avoid guide pad 2 to remove and depart from gathering sill 11.
As shown in Figure 6, in the present embodiment, the periphery of described end cap body 52 is provided with annular groove 521(or a groove)；The periphery of end cap body 52 is also uniformly provided with multiple axially arranged separate slot 522；The plurality of axially directed take turns 6 be arranged on correspondence separate slots 522 in (in the present embodiment, six directive wheels 6 are set, also be correspondingly arranged six separate slots 522), be provided with a retainer ring 523 in described annular groove 521, described retainer ring 523 be arranged in multiple axially directed take turns 6 core wheel；Thus, it is possible to make the plurality of axially directed to take turns 6 under haulage gear (not shown) effect, along the axial smooth and easy movement (as shown in Figure 7) of pipeline (straight tube or bend pipe).
Ground of the present invention high pressure pipe joint internal surface damage detecting device, adopts Magnetic Memory sensor, by detecting the change of metal tube inwall magnetic memory signal, manifold carries out flaw detection location；It is uniformly distributed six Magnetic Memory sensors along structure-steel framing hoop, owing to the natural resiliency of elasticity support element is flexible and swings, each guide pad can be made radially, axially to go up flexible, it is thus possible to make each sensor at hoop, radially, axially flexible, make sensor no matter can both fit well tube wall in pipe bent position or straight tube place, ensure that sensor obtains relatively accurate magnetic memory signal, improve the precision of detecting device.The present invention adopts six wheeled constructions, when detecting device runs at manifold inwall, it is possible to auxiliary detection device is when manifold inwall is close to by Magnetic Memory sensor, in the internal smooth and easy operation of manifold；Especially in pipe bent position, (elasticity is shored the contraction flexibly of element, adjusted) is coordinated with multiple guide pads by multiple axially directed wheels, it is ensured that the smooth and easy operation of detecting device.The detecting device size of the present invention is little, light weight, simple in construction, it is possible to move flexibly, easy to use, both can small size straight tube be detected a flaw, it is possible to small size bend pipe is detected a flaw.
The foregoing is only the schematic detailed description of the invention of the present invention, be not limited to the scope of the present invention.Any those skilled in the art, equivalent variations done under without departing from the design of the present invention and the premise of principle and amendment, all should belong to the scope of protection of the invention.
Claims (8)
1. a ground high pressure pipe joint internal surface damage detecting device, it is characterized in that: described detecting device includes cylindrical structural frame, this structure-steel framing is evenly equipped with multiple radially-directed groove along its circumference, being provided with a guide pad in each gathering sill slidably, described guide pad top is stretched out gathering sill and is positioned on the periphery of structure-steel framing；Described guide pad end face is provided with Magnetic Memory sensor, is provided with elasticity and shores element between described guide pad bottom surface and the bottom land of gathering sill；Described gathering sill is provided with restricted guidance block and departs from the limiting section of gathering sill；The axial two ends of described structure-steel framing are fixed with an end cap respectively, and the circumferential outer rim along described each end cap is provided with multiple axially directed take turns.
2. ground as claimed in claim 1 high pressure pipe joint internal surface damage detecting device, it is characterised in that: described gathering sill is that bottom surface is rectangular and cell body axially through structure-steel framing two ends；Described guide pad is the slide mass that cross section is T-shaped；Described guide pad is made up of sliding part and the supporting part for installing described Magnetic Memory sensor, and described supporting part is integrally connected to above sliding part；The width of described sliding part is identical with the width of gathering sill, the width of described supporting part is more than the width of gathering sill, the length of sliding part and supporting part is respectively less than the length of gathering sill, and the projection one respectively of the axial two ends bottom described sliding part can be arranged in the block of limiting section.
3. ground as claimed in claim 2 high pressure pipe joint internal surface damage detecting device, it is characterised in that: described structure-steel framing be axially arranged with centre bore；The bottom land of each gathering sill is provided with through the radial through holes of described centre bore；The end face of described supporting part is provided with a deep gouge, and described Magnetic Memory sensor is fixedly installed in described deep gouge；Described guide pad is provided with the through hole through to guide pad bottom surface by the bottom land of deep gouge, and described radial through holes is corresponding with the center of described through hole.
4. ground as claimed in claim 3 high pressure pipe joint internal surface damage detecting device, it is characterized in that: described guide pad bottom surface is provided with the first counterbore, the bottom land of described gathering sill is provided with the second counterbore, and it is the compression spring being arranged in the first relative counterbore and the second counterbore that described elasticity shores element.
5. ground as claimed in claim 4 high pressure pipe joint internal surface damage detecting device, it is characterised in that: described first counterbore and the second counterbore are oppositely arranged two respectively.
6. ground as claimed in claim 2 high pressure pipe joint internal surface damage detecting device, it is characterised in that: described end cap is made up of the connecting portion being fixedly connected on structure-steel framing end outer rim and the end cap body being positioned at connecting portion side；Described end cap central is provided with axial center hole.
7. ground as claimed in claim 6 high pressure pipe joint internal surface damage detecting device, it is characterised in that: the limiting section arranged on described each gathering sill is made up of the connecting portion of end cap.
8. ground as claimed in claim 6 high pressure pipe joint internal surface damage detecting device, it is characterised in that: the periphery of described end cap body is provided with an annular groove；The periphery of end cap body is also uniformly provided with multiple axially arranged separate slot；The plurality of axially directed wheel is arranged in corresponding separate slot, is provided with a retainer ring in described annular groove, and described retainer ring is arranged in multiple axially directed core wheel taken turns.
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| CN201410105532.1A CN103868984B (en) | 2014-03-20 | 2014-03-20 | Ground high pressure pipe joint internal surface damage detecting device |
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| CN201410105532.1A CN103868984B (en) | 2014-03-20 | 2014-03-20 | Ground high pressure pipe joint internal surface damage detecting device |
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| CN103868984B true CN103868984B (en) | 2016-07-13 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106855557A (en) * | 2015-12-09 | 2017-06-16 | 中国石油天然气股份有限公司 | A kind of test device for testing interior detection sensor |
| CN105909182A (en) * | 2016-05-30 | 2016-08-31 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Determining method for strength failure of high-pressure manifold |
| CN108548048A (en) * | 2018-06-27 | 2018-09-18 | 中国石油大学(北京) | Reducing automatic creeping marine riser internal detector |
| CN109060949A (en) * | 2018-08-14 | 2018-12-21 | 中国石油大学(北京) | Integrated pipe channel detector |
| CN109100417B (en) * | 2018-09-13 | 2023-09-08 | 中国石油大学(北京) | Nondestructive testing device for pipe fitting |
| CN109374727B (en) * | 2018-11-21 | 2024-02-02 | 中国石油大学(北京) | Storage tank detection robot |
| CN114183122A (en) * | 2021-12-09 | 2022-03-15 | 荆州市世纪派创石油机械检测有限公司 | Depth detection device and detection method for corrosion pits on inner wall of well cementation fracturing manifold |
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