CN105547991B - A kind of steel pipe inner wall Corrosion monitoring probe and steel pipe inner wall corrosion detecting method - Google Patents
A kind of steel pipe inner wall Corrosion monitoring probe and steel pipe inner wall corrosion detecting method Download PDFInfo
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- CN105547991B CN105547991B CN201610069816.9A CN201610069816A CN105547991B CN 105547991 B CN105547991 B CN 105547991B CN 201610069816 A CN201610069816 A CN 201610069816A CN 105547991 B CN105547991 B CN 105547991B
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- Prior art keywords
- steel pipe
- probe
- wall
- chip
- voussoir
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/04—Corrosion probes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
Abstract
The present invention provides steel pipe inner wall Corrosion monitoring probe, and the chip of multiple centripetal arrangements is provided in probe.Compared with prior art, probe provided by the invention greatly reduces the number of probe movement during steel pipe inner wall Corrosion monitoring, and cost of manufacture cheap voussoir is only needed to change when detecting the steel pipe of different size, without replacing entire probe, have the advantages that measurement efficiency is high, measurement cost is low, can be widely applied in the fields of measurement such as steel pipe inner wall corrosion.
Description
Technical field
The present invention relates to a kind of inner wall of metal tube Corrosion monitoring probe and inner wall of metal tube corrosion detecting methods, specifically
It is a kind of steel pipe inner wall Corrosion monitoring probe and steel pipe inner wall corrosion detecting method.
Background technology
Ultrasonic wave is a kind of sound wave of the frequency higher than 20000 hertz, its good directionality, penetration capacity is strong, is easily obtained
Compared with the acoustic energy of concentration, since its processing is convenient, and there is good directive property, therefore be frequently used for measuring various planks, tubing wall
The case where thick, boiler vessel wall thickness and its local corrosion, corrosion, main work is played to equipment safety operation and modern management
With.Ultrasonic thickness measurement is to carry out thickness measure according to Ultrasonic Pulse-Echo principle, when the ultrasonic pulse of probe transmitting
When reaching material interface by testee, pulse is reflected back toward probe by accurately measuring what ultrasonic wave was propagated in the material
Time determines the thickness of measured material.It is a kind of common to carry out steel pipe thickness measuring using ultrasonic wave to detect inner wall corrosion degree
Measurement technique, since steel pipe easily corrodes thinned in use, thus periodic measurement thickness of steel pipe is a kind of necessary
Production safety management measure.Traditional pipe corrosion detection dissipates ultrasonic acoustic beam using Single crystal probe and carries out thickness survey
Amount, its shortcoming is that the tested primary thickness for being only capable of measuring single locus of probe often contact, measure workpiece other when need not
Disconnected mobile probe, so mobile number increase in entire measurement process, measurement efficiency is low and is susceptible to the feelings of missing inspection
Shape.Thus, how to realize that single carries out thickness measure to multiple measurement points of steel pipe, reduces the shifting popped one's head in during Corrosion monitoring
Dynamic number, is a technical problem to be solved urgently to improve detection efficiency.
Invention content
In view of the above-mentioned problems existing in the prior art, the object of the present invention is to provide a kind of crystalline substances using multiple centripetal arrangements
Piece carries out steel pipe inner wall thickness measure to detect the detection probe and corrosion detecting method of extent of corrosion, and specific invention content is such as
Under：
A kind of steel pipe inner wall Corrosion monitoring probe is provided with the chip of multiple centripetal arrangements in probe.By in probe
Multiple chips, which are arranged, can realize that disposably multiple measured points progress thickness measure to steel pipe is to detect the extent of corrosion of steel pipe,
Reduce probe in the mobile number of tested outer wall of steel pipe, improves measurement efficiency.Preferably, chip can be in uniline arrangement or
Multirow is arranged.It is highly preferred that in order to realize that chip has the dual function of transmitting ultrasonic wave and reception echo, pressure can be selected in chip
Electric chip, preferably, rectangular wafer can be selected, the length range of rectangular wafer can be 5mm to 15mm, at this time in adjacent chip
Heart distance range is preferably 0.5mm to 1.5mm.In addition, the measurement of the steel pipe walls in order to meet different-thickness, the present invention is carried
Frequency can be selected as 1MHz to 15MHz piezoelectric chips in the probe of confession.
Preferably, chip is arranged in a probing shell.It is further preferred that probing shell is equipped with one in cylinder planar
The chip of the surface of emission, multiple centripetal settings is arranged along the surface of emission.At this time chip transmitting ultrasonic wave can by the surface of emission into
Enter tested steel pipe walls.It is further preferred that multiple chips are arranged along the surface of emission in uniline or multirow.Preferably, the transmitting
The width dimensions in face should be not less than the length dimension of chip.In addition, it is contemplated that the outer wall shape feature of steel pipe, the arc of the surface of emission
Degree should be more than 0 degree but be not more than 180 degree.
The chip popped one's head in order to prevent is worn in measurement process by coarse outer wall of steel pipe, further includes one and probing shell
The voussoir that inner surface agrees with, when the probe measurement, the voussoir is between probing shell and tested outer wall of steel pipe.Its
In, the face coupled with probing shell is joint face, and the face coupled with tested outer wall of steel pipe is measuring surface.Preferably, joint face with
The surface of emission of probing shell is bonded, and measuring surface is bonded with tested steel tubing portions outer wall.It is highly preferred that in order to make voussoir match with probe
Set uses, and the ultrasonic wave of each chip transmitting passes sequentially through the surface of emission, joint face and measuring surface.Preferably, in order to preferably coordinate
Measuring surface can be arranged to a cylindrical surface by the outer wall shape of steel pipe.At this point, the joint face of voussoir and the width of measuring surface and radian
Respectively it is not less than the width and radian of the surface of emission.
It is further preferred that in order to make voussoir and probe coordinate more preferably, totally one symmetry axis is arranged joint face with measuring surface.
It is noted that in order to after so that ultrasonic wave is passed through voussoir with 0 degree of incident angles steel pipe, in other words, in order to make ultrasonic wave exist
In steel pipe walls by path be just steel pipe wall thickness, can will measure radius surface and be set smaller than connection radius surface, go forward side by side one
Joint face and measuring surface are coaxially disposed by step, at this point, passage path of the ultrasonic wave in voussoir and joint face, the radius of measuring surface
Direction overlaps.In addition, voussoir is made of organic glass.
It is noted that in order to which the steel pipe different to plurality of specifications in the case where being changed without probe carries out thickness survey
Amount, inventor are creatively that probe is equipped with multiple voussoirs, the joint face all same of each voussoir, but measuring surface radius size is equal
It differs.When using the steel pipe for measuring different size when probe provided by the invention, it is only necessary to replace radius size and tested steel pipe
The matched voussoir of specification.At this point, the steel pipe for common specification measures, the measuring surface radius of voussoir is preferably
10mm to 100mm.Preferably, probing shell is connect with voussoir with movable connection method.Preferably, probing shell is used with voussoir
Bolt and nut connects.
A kind of steel pipe inner wall corrosion detecting method is carried out using the calibrator including aforementioned any probe in steel pipe
Wall erosion detects.
Step a:The probe of the calibrator is bonded with outer wall of steel pipe to be measured and carries out Corrosion monitoring；
Step b:Steel pipe thickness value to be measured is measured through calibrator.
It is highly preferred that in order to realize accurate detection, voussoir used of popping one's head in step a is bonded completely with steel pipe to be measured.
It is further preferred that the oxide etc. of outer wall of steel pipe interferes testing result in order to prevent, step a further includes
It polishes outer wall of steel pipe to be measured, and couplant is applied in outer wall of steel pipe to be measured.
It is noted that chip excitation program and thickness value calculation procedure built in calibrator.Calibrator first simultaneously or according to
Secondary exciting wafer generates inverse piezoelectric effect, and each chip is made simultaneously or sequentially to send out ultrasonic wave respectively；Simultaneously or sequentially excitation is each again
Chip generates direct piezoelectric effect, and each chip is made simultaneously or sequentially to receive the back wave that the ultrasonic wave respectively sent out generates respectively.
The thickness data result that calibrator is shown is a two-dimensional coordinate system, and wherein abscissa is wafer number 1,2,3 ...
N, ordinate are the thickness value of the corresponding measurement point of each chip.
In addition, when measuring the steel pipe of different size, it is only necessary to a measuring surface be selected to be connected to the matched voussoir of steel pipe specification
Probing shell is simultaneously measured according to above-mentioned steps.
Steel pipe inner wall Corrosion monitoring probe and steel pipe inner wall corrosion detecting method provided by the invention, using multiple centripetal rows
The chip of cloth carries out the thickness measure of steel pipe to detect its inner wall corrosion degree, and is equipped with size for the steel pipe of different size
Different voussoirs, compared with prior art, probe provided by the invention are popped one's head in during greatly reducing steel pipe thickness measure
Mobile number, and while measuring the steel pipe of different size only need to change the cheap voussoir of cost of manufacture, it is whole without replacing
A probe has the advantages that measurement efficiency is high, measurement cost is low, can be widely applied to steel pipe inner wall Corrosion monitoring and its
Related field.
Description of the drawings
Fig. 1 is a kind of preferred embodiment of steel pipe inner wall Corrosion monitoring provided by the present invention probe；
Fig. 2 is the structural schematic diagram of the probing shell of steel pipe inner wall Corrosion monitoring probe；
Fig. 3 is arrangement schematic diagram of the piezoelectric chip on the surface of emission；
Fig. 4 is the structural schematic diagram of voussoir；
Wherein, 1 is probing shell, and 2 be voussoir, and 3 be the surface of emission, and 4 be piezoelectric chip, and 5 be joint face, and 6 be measuring surface, 7
It is voussoir b for voussoir a, 8,9 be voussoir c, and 10 be voussoir d, and 11 be voussoir e.
Specific implementation mode
With reference to the accompanying drawings of the specification the present invention is made further in detail, completely to illustrate.
As shown in Figure 1, 2, a kind of steel pipe inner wall Corrosion monitoring probe, including along the sequentially connected spy of the ultrasonic wave direction of the launch
Casing 1 and voussoir 2, probing shell are equipped with the surface of emission 3 in cylinder planar, and specifically, the radian of the surface of emission is 150 degree,
Width is 12mm, radius 100mm, as shown in figure 3, it is in uniline and centripetal arrangement to be provided with 64 in probing shell along the surface of emission
Piezoelectric chip 4, the length of piezoelectric chip is 10mm, and the centre distance between adjacent piezoelectric chip is 10mm, the frequency of chip
Rate is 7MHz；In order to coordinate probe to use, voussoir also is provided with a joint face 5 and measuring surface 6 in cylinder planar, wherein joint face
It is identical with surface of emission size.It is noted that in order to be entered again with 0 degree after so that ultrasonic wave is passed through voussoir with zero degree incidence angle
Firing angle incidence steel pipe, in other words, in order to make ultrasonic wave in steel pipe walls by path just be steel pipe wall thickness, inventor will
Voussoir is arranged to semi-annular shape, measures radius surface and is set smaller than connection radius surface, in other words, ultrasonic wave is in voussoir at this time
Passage path is overlapped with the radial direction of joint face, measuring surface.In addition, the radian of voussoir is preferably 150 degree, i.e. joint face and survey
Amount face radian is 150 degree, and the material of voussoir is organic glass.
It is noted that diversified in specifications due to the tested steel pipe in practical tested, this requires use and tested steel
The matched probe of pipe outer wall carries out thickness measure, however the cost of manufacture popped one's head in is high, such as equal for the steel pipe of each specification
A matched probe is made then to substantially increase measurement cost and cause to waste, thus, in order to the case where being changed without probe
Lower to realize that the steel pipe different to plurality of specifications carries out thickness test, inventor is creatively that probe is equipped with multiple coordinate not
With the voussoir that the steel pipe of size measures, as shown in figure 4, specifically 5 joint faces of setting are identical, and radius surface matching is measured
The semi-annular shape voussoir of common steel pipe, the wherein radius of voussoir a7 are 38mm, the radius 45mm of voussoir b8, the radius of voussoir c9
Radius for 51mm, voussoir d10 is 60mm, the radius of voussoir e11 is 63mm.Correspondingly, for the ease of dismounting, voussoir uses spiral shell
Bolt nut connection type is movably connected on probing shell.
A kind of steel pipe inner wall corrosion detecting method, includes the following steps：
Step 1：By probe access host provided by the present invention, chip excitation program and thickness value calculate built in host
Program compiles each chip in chip excites program and thickness value calculation procedure using 1,2,3 ... 64 from left to right
Number；
Step 2：It polishes the outer wall of steel pipe to be measured, and couplant is applied in outer wall area to be measured；
Step 3：The measuring surface of the voussoir of probe is in contact with outer wall of steel pipe to be measured, each chip is right respectively from left to right
Answer different measurement points.Host controls the chip that number is 1,2,3 ... 64 according to preset program and generates inverse pressure successively
Electrical effect makes each chip become ultrasonic transmitter, and each chip simultaneously or sequentially sends out ultrasonic wave respectively at this time, and ultrasonic wave is with 0 degree
Incidence angle passes sequentially through voussoir, couplant and is finally tested steel pipe with 0 degree of incident angles；When the ultrasonic wave that each chip is sent out reaches
Back wave is generated when the inner wall of its corresponding measured point, at the same time host control successively by program to number be 1,2,
3 ... 64 chip generates direct piezoelectric effect, so that chip is become echo receiver, at this point, each chip simultaneously or sequentially connects respectively
Receive the back wave that the ultrasonic wave respectively sent out generates；
Step 4：The metrical information of acquisition is transmitted to the host of data connection by probe, and host calculates journey by thickness value
Sequence calculates the thickness value of the corresponding measurement point of each chip, and the data processed result of thickness value calculation procedure is shown as a two dimension and sits
Mark system, wherein abscissa are wafer number, and ordinate is the thickness value of the corresponding measurement point of each chip, and worker is by observing host
The thickness value of display judges steel pipe inner wall extent of corrosion.
When measuring the steel pipe of different size, it is only necessary to a measuring surface be selected to be connected to probe shell with the matched voussoir of steel pipe specification
Body is simultaneously measured according to above-mentioned steps.
Claims (19)
1. a kind of steel pipe inner wall Corrosion monitoring probe, it is characterised in that：The chip of multiple centripetal arrangements is provided in probe, it is described
Probe further includes a voussoir agreed with probing shell inner surface, and when the probe measurement, the voussoir is located at probing shell
Between tested outer wall of steel pipe, the face coupled with probing shell is joint face, and the face coupled with tested outer wall of steel pipe is measuring surface,
Probe configures multiple voussoirs, and the joint face of multiple voussoirs is identical and the radius size of measuring surface is different.
2. probe according to claim 1, it is characterised in that：Chip is arranged in uniline.
3. probe according to claim 1, it is characterised in that：Chip is piezoelectric chip.
4. probe according to claim 1, it is characterised in that：Chip is rectangular wafer.
5. probe according to claim 1, it is characterised in that：Chip is arranged in a probing shell.
6. probe according to claim 5, it is characterised in that：Probing shell is equipped with the surface of emission in cylinder planar, more
The chip of a centripetal setting is arranged along the surface of emission.
7. probe according to claim 6, it is characterised in that：Multiple chips are arranged along the surface of emission in uniline or multirow.
8. probe according to claim 6, it is characterised in that：The radian of the surface of emission is more than 0 degree but is not more than 180 degree.
9. probe according to claim 1, it is characterised in that：Joint face is bonded with the surface of emission of probing shell, measuring surface
It is bonded with tested steel tubing portions outer wall.
10. probe according to claim 9, it is characterised in that：The ultrasonic wave of each chip transmitting passes sequentially through the surface of emission, connects
Junction and measuring surface.
11. probe according to claim 10, it is characterised in that：Measuring surface is a cylindrical surface.
12. probe according to claim 11, it is characterised in that：Totally one symmetry axis is arranged joint face with measuring surface.
13. probe according to claim 12, it is characterised in that：Joint face is coaxially disposed with measuring surface and measures radius surface
Less than connection radius surface.
14. probe according to claim 1, it is characterised in that：Probing shell is connect with voussoir with movable connection method.
15. probe according to claim 1, it is characterised in that：Voussoir is organic glass.
16. a kind of steel pipe inner wall corrosion detecting method, it is characterised in that：Using including any spy of claim 1~15
The calibrator of head carries out steel pipe inner wall Corrosion monitoring.
17. according to the method for claim 16, it is characterised in that：It the described method comprises the following steps：
Step a:The probe of the calibrator is bonded with outer wall of steel pipe to be measured and carries out Corrosion monitoring；
Step b:Steel pipe thickness value to be measured is measured through calibrator.
18. according to the method for claim 17, it is characterised in that：Voussoir and steel pipe to be measured used in popping one's head in step a are complete
Fitting.
19. according to the method for claim 18, it is characterised in that：Step a further includes polishing outer wall of steel pipe to be measured, and is being waited for
It surveys outer wall of steel pipe and applies couplant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610069816.9A CN105547991B (en) | 2016-01-30 | 2016-01-30 | A kind of steel pipe inner wall Corrosion monitoring probe and steel pipe inner wall corrosion detecting method |
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|---|---|---|---|
| CN201610069816.9A CN105547991B (en) | 2016-01-30 | 2016-01-30 | A kind of steel pipe inner wall Corrosion monitoring probe and steel pipe inner wall corrosion detecting method |
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| CN105547991B true CN105547991B (en) | 2018-11-09 |
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| CN109932429A (en) * | 2017-12-15 | 2019-06-25 | 湘潭宏远电子科技有限公司 | Foreign matter non-destructive testing device and method in a kind of high-temperature pipe |
| CN109932421A (en) * | 2017-12-15 | 2019-06-25 | 湘潭宏远电子科技有限公司 | Foreign matter lossless detection method and device in metallic conduit |
| CN109030623A (en) * | 2018-06-08 | 2018-12-18 | 国网浙江省电力有限公司培训中心 | A kind of supersonic detection device of livewire work insulation tube |
| CN111766293A (en) * | 2019-04-02 | 2020-10-13 | 中国石油天然气集团有限公司 | Multi-specification continuous pipe defect detection device |
| CN111493929B (en) * | 2020-05-21 | 2021-03-02 | 河南科技大学第一附属医院 | Medical ultrasonic detection device |
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