CN203534512U - Full-covering monitoring device for thickness of industrial-pipe wall - Google Patents
Full-covering monitoring device for thickness of industrial-pipe wall Download PDFInfo
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- CN203534512U CN203534512U CN201320474945.8U CN201320474945U CN203534512U CN 203534512 U CN203534512 U CN 203534512U CN 201320474945 U CN201320474945 U CN 201320474945U CN 203534512 U CN203534512 U CN 203534512U
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Abstract
The utility model discloses a full-covering monitoring device for the thickness of an industrial-pipe wall. The device includes a detection device and a magnetizing device. The detection device includes a probe frame and probes. Hall sensor arrays which are formed by a plurality of Hall sensors arranged closely and continuously is disposed in each the probe. The probes are installed on the probe frame, wherein the center of the probe frame is a circular through hole for allowing a to-be-detected pipe to pass. The probes are arranged to be surrounding the edge of the circular through hole. The diameter of a circular ring formed by surrounding arrangement of the probes matches with the diameter of the to-be-detected steel pipe. A group of Hall sensor arrays which are formed by the plurality of Hall sensors arranged closely and continuously is disposed in each the probe. The plurality of the probes are arranged to be surrounding the edge of the round through hole. The diameter of the circular ring formed by the surrounding arrangement of all the probes matches with the diameter of the to-be-detected steel pipe. The full-covering monitoring device for the thickness of the industrial pipe wall converts thickness changes of the pipe wall into intensity changes of the magnetic field at the outer surface of the pipe, and array Hall sensors are used to convert all changes of the magnetic field at the outer surface of the pipe into wall-thickness signals so that full-covering wall-thickness monitoring for a ferromagnetic pipe is realized.
Description
Technical field
The utility model relates to a kind of industrial pipeline wall thickness all standing monitoring device.
Background technology
A large amount of industrial pipelines that use in the systems such as oil, rock gas, chemical industry.Industrial pipeline consists of steel pipe.In steel pipe rolling, some intrinsic manufacturing process causes thickness of steel pipe extremely and wall defects: for example, if the axle in high speed precession and external mold decentraction can cause thickness of steel pipe extremely and wall defects problem; Equally, pipeline also can reduce at some local wall thickness after being used a period of time.Pipeline wall thickness can cause the accidents such as pipeline burst extremely.The a lot of oil fields of China are in probing and recovery process, and the direct loss that cause an accident due to pipeline quality problem just may reach several hundred million units.
The industrial pipeline that is applied in oil field claims pipe for oil.In the world for the thickness of pipe problem that extremely causes the accident for oil, the mandatory provision in API standard of up-to-date American Petroleum Institute (API): must to oil with the wall thickness of pipe carry out total length, all standing detects.
Because existing ultrasonic and thickness measurement with ray instrument exists handling safety protection and signal coupling integrity problem, the number of simultaneously being popped one's head in limits, and is difficult to realize all standing detection to pipeline.
Reliable all standing detector tube wall thickness difference or wall thickness loss, need research, the brand-new technology and equipment of design and development.
At present, for pipeline wall thickness detection technique, mainly contain following two kinds both at home and abroad:
(1) U.S. YiNDCHe OEM company is representative, produce a kind of gamma rays wall thickness checkout equipment, use radioactivity gamma rays pipe that a rotary irradiating Line beam is passed to pipe, strength retrogression while penetrating measured object according to ray carries out converted measurement thickness, measure the quantity of X-rays X that tested steel plate absorbs, according to the energy value of this ray, determine the thickness of measured piece.Because the have serious harm of gamma rays to operating personnel and annex other staff health, for the consideration to safety, is used thickness measurement with ray equipment corresponding protection to be set according to relevant safety regulation system.Meanwhile, this radioactivity gamma rays method can not detect 100% tube wall, and its coverage is limited interval, can only be by narrow helical trajectory part on the ray detection pipeline along straight line rotation.
(2) the another kind of detection method of industrial pipeline wall thickness is ultrasonic method.Use the ultrasound transducer array of rotation to detect by the pipeline of checkout equipment, often adopt the mode of immersion type or shower water coupling ultrasonic signal.China Hefei Zhongda Inspection Tech. Co., Ltd. researches and develops a kind of pipeline wall thickness ultrasonic device for measuring.By water coupling mechanism, current are sent in the sump of rotation; High-energy ultrasonic probe group is arranged in sump, and the water column that ultrasound wave sends by sump is reliably coupled on pipeline.
This pipeline wall thickness ultrasonic device for measuring detection speed is very low, need to use expensive phased-array technique ultrasonic probe, between probe and pipeline, need couplant (water or oil), and need complicated arranging to check rotation detecting or rotation pipe, be difficult to realize the wall thickness all standing of pipeline is detected.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of device that can monitor industrial pipeline wall thickness in all standing mode.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: industrial pipeline wall thickness all standing monitoring device, comprises sniffer and magnetizing assembly; Sniffer comprises probe holder and probe; The inner Hall sensor array forming with the tight continuous arrangement of a plurality of Hall elements that arranges of probe; Probe is arranged on probe holder.
As preferably, the central authorities of probe holder hold the manhole that tested pipeline passes through; Probe, is popped one's head in suitable around the circle diameter being arranged in and tested diameter of steel tube around arrangement along the edge ring of manhole.
As preferably, the inner one group of Hall sensor array forming with the tight continuous arrangement of a plurality of Hall elements that arranges of described probe; A plurality of described probes along the edge ring of manhole around arrangement; All probe is suitable around the circle diameter being arranged in and tested diameter of steel tube.
As preferably, pop one's head in as 2-8
As preferably, probe holder also comprises probe open/close mechanism; Probe open/close mechanism comprises center of circle spring and electromagnetism attracting device; The inner of probe is connected with probe holder, and the outer end of probe is connected with electromagnetism attracting device; Described center of circle spring compressing probe is adjacent to tested steel tube surface; The outer end that is about to probe after the energising of electromagnetism attracting device is mentioned and opens to periphery.
As preferably, also comprise frame, chute and guide rail, chute is fixed on the top of frame, and guide rail is fixed on the bottom of frame; Probe holder inserts in the space of chute and guide rail formation; Probe holder can be changed by pull in chute and guide rail.
As preferably, magnetizing assembly comprises magnetizing coil and the poly-magnetic annulus of being made by magnetic material; Magnetizing coil is single magnetizing coil; The distance that poly-magnetic annulus and magnetizing coil interval are set and coaxial with magnetizing coil; Poly-magnetic annulus is connected to magnetizing coil by the magnetic circuit forming with magnetic material; Probe is between magnetizing coil and poly-magnetic annulus; Probe is 50～100mm with the distance of poly-magnetic annulus.
As preferably, magnetizing assembly also comprises coil brace, base plate, supporting pillar, and coil brace, base plate, supporting pillar are made by magnetic material; Magnetizing coil is fixed on coil brace, and poly-magnetic annulus is fixed on supporting pillar upper end, and supporting pillar lower end is fixed on base plate; Coil brace, base plate, supporting pillar form the magnetic circuit that is connected to poly-magnetic annulus by magnetizing coil.
As preferably, the internal diameter of magnetizing coil is provided with the core ring that magnetic material is made, and makes magnetizing coil become the magnetizing coil of ribbon core; Poly-magnetic annulus consists of the donut of multilayer, end to end the forming of sheet material that donut is made by magnetic material, and each layer of donut is according to the whole donut of stacked formation from outside to inside of radius size separately.
As preferably, magnetic material is soft iron magnetic material.
The beneficial effects of the utility model are:
Pipeline wall thickness is changed and changes into pipeline external surface change of magnetic field strength, utilize closely continuous array Hall element that the changes of magnetic field on the full surface of pipeline is changed into wall thickness signal, and utilize software by detected mass data, display pipes wall thickness graph curve and each point wall thickness data intuitively.Realization is monitored ferromagnetic pipeline all standing wall thickness.This device can carry out the monitoring of all standing wall thickness to the steel pipe passing through at a high speed on the roll line of steel pipe, also can be used for engineering site the industrial pipeline wall thickness in construction is strictly monitored.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model industrial pipeline wall thickness all standing monitoring device embodiment.
Fig. 2 is the schematic diagram that Hall element detects wall thickness field signal.
Fig. 3 is that the array Hall element of the utility model industrial pipeline wall thickness all standing monitoring device embodiment detects schematic diagram for pipeline wall thickness.
Fig. 4 is that the Hall sensor array of the utility model industrial pipeline wall thickness all standing monitoring device embodiment is in waiting for monitoring state schematic diagram.
In figure, 1-base plate, 2-riser, 3-pipeline, 4-core ring, 5-center of circle spring, 6-magnetizes line chart, 7-connecting rod, 8-probe holder, 9-electromagnetism attracting device, 10-probe, 11-gathers magnetic annulus, 12-supporting pillar, 13-pulley, 14-slide rail, 15-magnetic field.
Embodiment
One, the structure of industrial pipeline wall thickness all standing monitoring device
Fig. 1 is industrial pipeline wall thickness all standing monitoring device, short blind area magnetizing assembly and sniffer, consists of.Wherein industrial pipeline is that ferrimagnet is made.
Sniffer is comprised of probe holder 8 and 4 probes 10.Probe concrete structure is as follows:
The width of each Hall element is 2.5 millimeters, if 4 probes are set, according to pipeline excircle length S(millimeter) difference, each probe inside arranges the S/4 * 2.5 tight continuous arrangement of a Hall element and forms one group of Hall sensor array, and wherein each Hall element is connected with external circuit by mode in parallel.
For more bigbore pipeline.Can adopt 8 probes, each probe inside is provided with the S/8 * 2.5 tight continuous arrangement of a Hall element and forms one group of Hall sensor array.
The central authorities of probe holder 8 hold the circular detection through hole that tested steel pipe passes through.4 probe 10(i.e. four groups of Hall sensor arrays) along the edge ring of circular detection through hole around being arranged in circular being arranged on probe holder, the circle diameter that 4 probes are arranged and tested pipeline 3 diameters are suitable.
Probe holder is provided with probe open/close mechanism.The inner of probe 10 is connected with probe holder, and the outer end of probe 10 is connected with electromagnetism attracting device 9.Mention to periphery be about to pop one's head in after electromagnetism attracting device energising 10 outer end, and at this moment 4 probes 10 are the wait detected state opening.After the power-off of electromagnetism attracting device, spring 5 compressing probes 10 in the center of circle are adjacent to tested steel pipe 3 surfaces, and at this moment 4 probes 10 are closed detected state.
For convenience of changing, be provided with the different probe holders that detect through-hole diameter, probe holder 8 adopts plug-in type charging crane.Wherein chute is fixedly connected with the top of riser 2 by connecting rod 7, and slide rail 14 is fixed on the bottom of frame.Probe holder 8 bottoms are provided with pulley 13, can insert easily in the space of chute and slide rail formation.Probe holder can be changed by pull in chute and slide rail.
For overcoming current twin coil magnetizing apparatus, detect the long shortcoming in blind area, the present embodiment adopts the short blind area magnetizing assembly consisting of magnetizing coil 6 and the poly-magnetic annulus 11 made by magnetic material.
The distance that poly-magnetic annulus and magnetizing coil interval are set and coaxial with magnetizing coil; Poly-magnetic annulus is connected to magnetizing coil by the magnetic circuit forming with magnetic material.Probe 10 is arranged between magnetizing coil and poly-magnetic annulus, but the more close poly-magnetic annulus of probe detects blind area to shorten.In the present embodiment, probe is 50mm with the distance of poly-magnetic annulus.
The internal diameter of magnetizing coil is provided with the core ring 4 that magnetic material is made, and makes magnetizing coil become the magnetizing coil of ribbon core.
Poly-magnetic annulus consists of the donut of multilayer, end to end the forming of sheet material that donut is made by magnetic material, and each layer of donut is according to the whole donut of stacked formation from outside to inside of radius size separately.
In the present embodiment, for making magnetic property better, magnetic material all adopts soft iron magnetic material.
Two, know-why
The boundary condition of the know-why of the present embodiment based on following stationary magnetic field:
The medium internal magnetic field that is μ 1 at magnetic permeability is B1, and entering magnetic permeability is that in μ 2 media, rear magnetic field is B2, and in the interphase both sides of two kinds of different magnetic medium, the medium internal magnetic field that is μ 1 at magnetic permeability is B1, and entering magnetic permeability is that in μ 2 media, rear magnetic field is B2.In the interphase both sides of two kinds of different magnetic medium, the normal component B of magnetic induction density
2nwith tangential component B
2t, the normal component H of magnetic field intensity
2nwith tangential component H
2t, meet following boundary condition:
(1) normal component of magnetic induction density is continuous, and the normal component of magnetic field intensity is discontinuous:
B
1n=B
2n μ
1H
1n=μ
2H
2n
(2) tangential component of magnetic field intensity is continuous, and the tangential component of magnetic induction density is discontinuous:
H
1t=H
2t
According to the boundary condition of stationary magnetic field, when ferromagnetism industrial pipeline is carried out to axial constant magnetic field magnetisation, pipeline is externally executed magnetic field following effect:
1, pipeline converges to the effect in duct wall by the magnetic line of force;
2, duct wall is externally executed stationary magnetic field shielding action;
3, the defect in duct wall (comprising wall thickness change) is externally executed stationary magnetic field refraction action.
Therefore while ferromagnetism industrial pipeline being carried out to axial constant magnetic field magnetisation, if there is wall thickness change or defect on duct wall, the variation that can leak outside in formation magnetic field, pipeline external surface space of these wall thickness change or defect.
Adopt the special array Hall element of making to surround pipeline scanning, can carry out total length all standing wall thickness to the pipeline passing through at a high speed and monitor, way is as follows:
When array Hall element is during in the even position of duct wall, the uniform magnetic field of pipe surface, vertically by sensor, forms original levels at its output terminal, is stored in the nominal wall thickness that is defined as pipeline in database; When the artificial cutting position of array Hall element in duct wall attenuation 5%, this wall thickness is lost in pipe surface a magnetic field increment, is stored in database, to be defined as pipeline wall thickness attenuation 5%; Equally, when the artificial cutting position of array Hall element at duct wall attenuation 10% and 12.5%, wall thickness is lost in pipe surface again magnetic field increment, is stored in database, to be defined as pipeline wall thickness attenuation 10% and 12.5%.
Adopt array Hall element to surround along pipe circumference 360 degree all standings, can carry out total length all standing wall thickness to the pipeline passing through at a high speed and monitor.
Three, the short blind area of pipeline magnetizing assembly
The present embodiment adopts short blind area magnetizing assembly, can overcome the following shortcoming of the twin coil magnetizing apparatus of current employing: when pipe head passes first coil of magnetizing apparatus, coil becomes part from air core coil and take the iron-core coil that flow string is iron core, there is to increase phenomenon in its impedance, magnetization cycle electric current diminishes, and causes pipe head magnetization not enough; The disturbance of magnetic field simultaneously changing forms strong disturbance in sensor; Until pipe head passes through after second coil, the variation of coil impedance and the disturbance in magnetic field just start to finish, and form very long termination and laterally detect blind area.
Short blind area magnetizing assembly overcomes above-mentioned shortcoming like this: when pipe head is during through magnetizing coil independently, cause magnetizing apparatus impedance variation, magnetization current diminishes; But, when pipe head arrives poly-magnetic device, poly-magnetic device does not have the variation of coil impedance and the disturbance in magnetic field, the variation of absolute coil impedance and the disturbance in magnetic field simultaneously finishes, disturbance of magnetic field is interval is the distance between probe and poly-magnetic device, and the various wall thickness change on body are by reliable detection.Short blind area magnetizing assembly makes the detection blind area of wall thickness monitoring device be less than 50mm.
Four, the array wall thickness monitoring sensor based on hall principle
1, Hall element
Hall element is the device starting by DC current of being made by semiconductor material, and it can export one and by voltage--the Hall voltage that their magnetic field is directly proportional, and is called Hall effect.
The formation of Hall voltage is as shown in Figure 2: the electric current I of passing through in Hall element along the vertical direction with defect magnetic field B by time, in Hall element both sides, produce Hall voltage Hr:
Hr=RH IB/t=KHIB
In above formula, RH is Hall coefficient, and KH is Hall element sensitivity, is Hall coefficient RH and the ratio of Hall element thickness t.
When Hall coefficient RH and electric current I one timing, Hall voltage Hr only depends on magnetic induction density B, and irrelevant in the movement velocity of stray field with elements relative.
Fig. 3 is for adopting the schematic diagram of array Hall element to pipeline wall thickness monitoring.In Fig. 3, approximately 2.5 millimeters of the Hall element length of each passage, arrange by 20～150 single channel Hall elements are accurate, form one group of Hall sensor array.By common 360 degree 100% all standings that realize tube wall of at least four group Hall sensor arrays, four groups of Hall sensor arrays, first, second, third and fourth quadrant in pipeline 3 peripheries respectively wherein, when they close up, cover separately the locus of 90 degree.
Five, the course of work of new pipeline total length all standing wall thickness monitoring
1, the wait monitoring state that Hall sensor array opens
In Fig. 4, when pipeline does not arrive or leaves between monitoring section, four groups of Hall sensor arrays open under the effect of probe open/close mechanism, in waiting status, avoid pipe head box cupling to clash into Hall sensor array.Around here, at the center of coil, the outside along the longitudinal axis and coil distributes in the magnetic field 15 that magnetizing apparatus sends, and all Hall sensor arrays are in closing the cut-off stage, no signal output.
The process that four groups of Hall arrays open under the effect of probe open/close mechanism is such:
In order to dodge termination box cupling and the end tail thread protector of pipeline, four groups of Hall sensor arrays are being controlled by probe open/close mechanism:
In Fig. 1, in cylindrical one side of four groups of Hall sensor arrays 10, by electromagnetism attracting device 9, respectively four groups of Hall arrays are applied the pretension of an outside circular direction.
1) under the perception of pipeline location detection system, when there is no the light condition that device for cleaning pipeline is out-of-date, electromagnetism attracting device is in "on" position, and Hall sensor array is subject to outside circular direction, to open under the effect of electromagnetism attracting device;
2) under the perception of pipeline location detection system, when tested steel pipe 3 terminations arrive probe positions, steel pipe position detecting system drive unit is the waiting period of time delay, electromagnetism attracting device is in "on" position, Hall array is subject to outside circular direction, to open under the effect of electromagnetism attracting device, reality is respectively organized Hall array and is dehisced to be greater than the box cupling of pipeline and the external diameter of screw thread, has avoided pipeline coupling shock;
3) when the termination of pipeline is passed through, after probe, to finish the waiting period of time delay, electromagnetism attracting device down circuitry, each organizes Hall array under the contention effect to center of circle spring 5, fits tightly pipeline external surface and carries out reliable carrying out flaw detection;
4) the tail end thread protector part when pipeline will arrive before Hall array, and electromagnetism attracting device is again in "on" position, and Hall array is subject to outside circular direction, to open under the effect of electromagnetism attracting device, avoid pipeline thread protector to clash into Hall array.
2, the detected state of Hall sensor array closure
In ferromagnetic conduit enters between detection zone, a large amount of lines of flux will concentrate in duct wall.If there is a super thick pipe of pipeline wall thickness to put into coil, the magnetic flux line in outer wall space is pooled in duct wall, thereby has reduced the magnetic field B by Hall element, and Hall voltage reduces.
On the contrary, if increased by the magnetic flux line of Hall element, illustrate that pipeline wall thickness attenuation is partly examined out.
3, the separating monitoring to same outer diameter different size pipeline
In transportation, store or process new during with used pipeline, although the external diameter of pipe is identical, the pipe of different-thickness may mix.Before pipe comes into operation, the pipeline that is mixed with different wall is detected and distinguishes by fast and reliable is necessary.
When identical internal-and external diameter and uniform wall thickness device for cleaning pipeline are crossed array Hall element, the uniform magnetic field of pipe surface vertically passes through sensor, at its output terminal, form the original levels that represents nominal wall thickness, the original levels of all monitored pipelines is all qualified pipeline mutually.
When mixing while having different wall device for cleaning pipeline to cross array Hall element, the uniform magnetic field of pipe surface vertically, by sensor, can form the level that represents different nominal wall thicknesses at its output terminal all the time.By the monitored pipeline of all level that the has nominal wall thickness same position of pulling over, they are exactly the qualified pipeline of same size.So just will mix and have different wall pipeline to separate.
4, monitoring same specification pipeline wall thickness being changed
In the identical ferromagnetic conduit of nominal wall thickness enters between detection zone, a large amount of lines of flux will concentrate in tube wall.The uniform magnetic field of pipe surface, vertically by sensor, forms original levels at its output terminal, with the nominal wall thickness data that are stored in this pipeline in database relatively after, at the nominal wall thickness of the correspondence position display pipes of display;
When duct wall attenuation partly enters monitored area, there is an inwall wall thickness loss area just at pipe surface, to have a magnetic field increment, the Hall output level that this magnetic field increment forms be stored in various pipeline wall thickness attenuation level data comparison in database, draw wall thickness attenuation amount and the residue pipeline wall thickness in this region, at this place's wall thickness attenuation grade and residual wall thickness of the correspondence position display pipes of display.
The wall thickness attenuation grade of pipeline can be divided into 5%, 10% and 12.5% of pipeline wall thickness.The wall thickness attenuation of general pipeline reaches nominal wall thickness 12.5% or more serious situation, should report to the police, and must reject.
5, the identification to pipeline wall thickness version
The wall attenuation form of pipeline is various: have the straight trough dress attenuation parallel with conduit axis; There is the attenuation of the circumferential spiral groove of pipeline; The wall unevenness that has inner circle and cylindrical decentraction to cause is even; The wall thickness attenuation that has the hole piece of a few regions to cause; Large area wall thickness attenuation that the densely covered shape pit that has a large amount of inner wall corrosions to form causes etc.
As shown in table 1, can the various attenuation forms of pipeline wall thickness be monitored and be identified by common realization of four groups of Hall arrays that are distributed in four quadrants.
The identification of table 1 pair pipeline wall thickness version
In order to monitor better and identify the variation of pipeline wall thickness, the present embodiment adopts pipe detection special software, and by pipeline, quality information is graphical everywhere.
Pipe detection special software is according to the output of hyperchannel treatment circuit and the corresponding Hall voltage relation of the actual wall thickness of pipeline, and further compensation finally shows below figure on computer monitoring interface:
The wall thickness attenuation grade of pipeline is 5% of the actual wall thickness of pipeline;
The wall thickness attenuation grade of pipeline is 10% of the actual wall thickness of pipeline;
The wall thickness attenuation grade of pipeline is 12.5% of the actual wall thickness of pipeline;
The wall thickness attenuation of general pipeline reaches pipeline wall thickness 12.5% or more serious, should report to the police, and indication driving mechanism is rejected.
Seven, the key technical indexes of the present embodiment
Generally, the present embodiment meets the requirement of the latest edition API-5CT of American Petroleum Institute (API), 5D, 5L standard.
Wherein:
1, monitoring outer diameter tube scope: 60≤d≤180mm
88.9≤d≤250mm
140≤d≤340mm
250≤d≤400mm
2, monitoring pipeline wall thickness range: 4.0～25.0m
3, monitoring pipeline length range: 6.0～18.0m
4, sensitivity: reliably find that 25mm * 25mm * N5 pipeline nominal wall thickness changes;
Reliable 25mm * 25mm * the N10 of discovery pipeline nominal wall thickness changes;
Reliable 25mm * 25mm * the N12.5 of discovery pipeline nominal wall thickness changes, and reports to the police.
5, monitoring steel pipe velocity variations scope: (30～40) m/min
6, Piping specimen wall thickness change recall rate: 100%
7, Piping specimen wall thickness change rate of failing to report :≤0.01%
8, Piping specimen wall thickness change rate of false alarm :≤1%
9, pipeline monitoring coverage rate: circumference 100% covers; Except blind area, termination, pipeline total length covers.
10, monitoring display mode: Computer Graphic Demonstration observation process.
11, wall thickness change mark precision: mark is hindered deviation ± 20mm
12, sorting capability: to pipeline certified products and the correct sorting of waste product.
13, circumferential poor sensitivity: pipeline is defect inspection poor sensitivity <2dB along the circumferential direction.
14, monitor the mode of filing: pipeline wall thickness monitoring result is set up to Graphic Documentation.
Claims (10)
1. industrial pipeline wall thickness all standing monitoring device, comprises sniffer and magnetizing assembly; It is characterized in that: described sniffer comprises probe holder and probe; The inner Hall sensor array rearranging with a plurality of Hall elements that arranges of described probe; Described probe is arranged on probe holder.
2. industrial pipeline wall thickness all standing monitoring device according to claim 1, is characterized in that: the central authorities of described probe holder hold the manhole that tested pipeline passes through; Described probe, is popped one's head in suitable around the circle diameter being arranged in and tested diameter of steel tube around arrangement along the edge ring of manhole.
3. industrial pipeline wall thickness all standing monitoring device according to claim 2, is characterized in that: the inner one group of Hall sensor array forming with the tight continuous arrangement of a plurality of Hall elements that arranges of described probe; A plurality of described probes along the edge ring of manhole around arrangement; All probe is suitable around the circle diameter being arranged in and tested diameter of steel tube.
4. industrial pipeline wall thickness all standing monitoring device according to claim 3, is characterized in that: described probe is 2-8.
5. industrial pipeline wall thickness all standing monitoring device according to claim 2, is characterized in that: described probe holder also comprises probe open/close mechanism; Described probe open/close mechanism comprises center of circle spring and electromagnetism attracting device; The inner of described probe is connected with probe holder, and the outer end of probe is connected with electromagnetism attracting device; Described center of circle spring compressing probe is adjacent to tested steel tube surface; The outer end that is about to probe after described electromagnetism attracting device energising is mentioned and opens to periphery.
6. according to the industrial pipeline wall thickness all standing monitoring device described in claim 2 or 3, it is characterized in that: also comprise frame, chute and guide rail, described chute is fixed on the top of frame, and described guide rail is fixed on the bottom of frame; Described probe holder inserts in the space of chute and guide rail formation; Probe holder can be changed by pull in chute and guide rail.
7. industrial pipeline wall thickness all standing monitoring device according to claim 1, is characterized in that: described magnetizing assembly comprises magnetizing coil and the poly-magnetic annulus of being made by magnetic material; Described magnetizing coil is single magnetizing coil; The distance that described poly-magnetic annulus and magnetizing coil interval are set and coaxial with magnetizing coil; Described poly-magnetic annulus is connected to magnetizing coil by the magnetic circuit forming with magnetic material; Described probe is between magnetizing coil and poly-magnetic annulus; The distance of described probe and poly-magnetic annulus is 50～100mm.
8. industrial pipeline wall thickness all standing monitoring device according to claim 7, is characterized in that: described magnetizing assembly also comprises coil brace, base plate, supporting pillar, and described coil brace, base plate, supporting pillar are made by magnetic material; Described magnetizing coil is fixed on coil brace, and described poly-magnetic annulus is fixed on supporting pillar upper end, and supporting pillar lower end is fixed on base plate; Described coil brace, base plate, supporting pillar form the magnetic circuit that is connected to poly-magnetic annulus by magnetizing coil.
9. industrial pipeline wall thickness all standing monitoring device according to claim 7, is characterized in that: the internal diameter of described magnetizing coil is provided with the core ring that magnetic material is made, and makes magnetizing coil become the magnetizing coil of ribbon core; Described poly-magnetic annulus consists of the donut of multilayer, end to end the forming of sheet material that donut is made by magnetic material, and each layer of donut is according to the whole donut of stacked formation from outside to inside of radius size separately.
10. the industrial pipeline wall thickness all standing monitoring device described in any one according to claim 7-9, is characterized in that: described magnetic material is soft iron magnetic material.
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| CN201320474945.8U CN203534512U (en) | 2013-08-06 | 2013-08-06 | Full-covering monitoring device for thickness of industrial-pipe wall |
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|---|---|---|---|
| CN201320474945.8U CN203534512U (en) | 2013-08-06 | 2013-08-06 | Full-covering monitoring device for thickness of industrial-pipe wall |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471495A (en) * | 2013-08-06 | 2013-12-25 | 合肥中大检测技术有限公司 | Full-covering monitoring device for industrial-pipe wall thickness |
| CN104506816A (en) * | 2014-12-31 | 2015-04-08 | 中国电子科技集团公司第五十研究所 | Pipeline internal sonar data collection transmission system |
| CN109357645A (en) * | 2018-12-12 | 2019-02-19 | 四川沐迪圣科技有限公司 | A kind of packaged type ultrasonic wave bend pipe measuring thickness device |
-
2013
- 2013-08-06 CN CN201320474945.8U patent/CN203534512U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471495A (en) * | 2013-08-06 | 2013-12-25 | 合肥中大检测技术有限公司 | Full-covering monitoring device for industrial-pipe wall thickness |
| CN104506816A (en) * | 2014-12-31 | 2015-04-08 | 中国电子科技集团公司第五十研究所 | Pipeline internal sonar data collection transmission system |
| CN109357645A (en) * | 2018-12-12 | 2019-02-19 | 四川沐迪圣科技有限公司 | A kind of packaged type ultrasonic wave bend pipe measuring thickness device |
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