CN102879458B - Damage detector based on piezomagnetic effect - Google Patents
Damage detector based on piezomagnetic effect Download PDFInfo
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- CN102879458B CN102879458B CN201210277785.8A CN201210277785A CN102879458B CN 102879458 B CN102879458 B CN 102879458B CN 201210277785 A CN201210277785 A CN 201210277785A CN 102879458 B CN102879458 B CN 102879458B
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Abstract
The invention relates to a damage detector based on a piezomagnetic effect, which comprises a signal acquisition system, a photoelectric ranging system, a signal processing system and a base plate system, wherein the signal acquisition system is a scanning probe provided with a transverse rod, and a magnetic induction sensor array and a temperature sensor are integrated on the transverse rod; the signal processing system comprises an amplification and filter circuit, a signal amplification circuit, a multiway switch, an A/D conversion circuit and a computer system; a signal processing software is installed in the computer system of the signal processing system, and the computer system is connected with a human interface device and a warning device; and the damage detector is further provided with the transverse rod which can be movably connected and a base plate which has the effect of vibration reduction and can adapt to the pipe reducer, is a damage detector with multiple purposes and strong reliability based on the piezomagnetic effect, and has very important significance of improving the technical level of safety testing of domestic oil and gas pipelines , and timely and effectively preventing safety accidents caused by damage and ruin of the pipelines.
Description
Technical field
The application relates to a kind of damage check instrument, and particularly a kind of metal memory hyperchannel damage check instrument, can carry out efficient detection to pipeline peace aircraft panels.
Background technology
The major way that pipeline transportation is oil, natural gas transportation adopts.At present, transported by pipeline at the crude oil of China nearly 70%, the rock gas of 100%.According to incompletely statistics, the built oil of China, natural gas line total kilometrage have exceeded 80,000 kilometers, and under construction and pipeline that is that plan to build also has nearly ten thousand kilometers, oil field gathering and transportation pipe network, refinery, urban pipe network is accumulative reaches hundreds thousand of kilometer.Due to delivery line, to pass through region wide, and Service Environment is complicated, and position is hidden, once there is failure damage, often causes huge economic loss, cause the catastrophic failures such as personal injury, also can cause very large destruction to environment.According to statistics, in the existing long distance oil-gas delivery line of China, existing 70% enters the Frequent Accidents phase, annual because pipeline corrosion, the aging pipeline accident caused very frequently, also exist great potential danger, therefore before accident occurs, detection is carried out to pipeline and have very important significance.
When piezomagnetic effect refers to that ferrimagnet is subject to the effect of mechanical force, its inside produces strain, causes magnetoconductivity to change, thus magnetic field is changed.Distribution of Magnetic Field on ferromagnetic metal parts surface and component stress load have certain relation, and the Distribution of Magnetic Field situation therefore by detection part surface is diagnosed parts indirectly.Steel oil and gas pipes is under the effect of Cemented filling pressure, its stress is concentrated and the magnetic field intensity at the hurt place such as corrosion exists obvious feature: tangential magnetic field component Hp (x) has maximal value, normal magnetic field component Hp (y) reindexing and have null value.Based on the pipeline inspection technology of piezomagnetic effect by the pressure magnetic signal of record pipeline, extract pressure magnetic magnetic signature value, set up pipe stress and concentrate and the hurt position judgment criterion such as corrosion, and analyze the stressing conditions of hurt place pipeline.Piezomagnetic effect theory can provide strong technical support for the analysis of feeromagnetic metal component failure and life appraisal, has the advantage of its uniqueness at field of non destructive testing.
Common method for detecting pipeline has ultrasound examination and magnetic-leakage type pipe detection etc., and they all exist certain defect.Hyperacoustic propagation must rely on liquid medium, and is easily absorbed by wax, so ultrasonic detection instrument is not suitable for detecting at gas pipeline and the very high oil pipeline of the content of wax.Magnetic-leakage type pipe detection needs special magnetizing equipment, and detect and terminate rear needs demagnetization process, testing cost is high, there is the problems such as electromagnetic pollution.The natural magnetization phenomenon that piezomagnetic effect can utilize pipeline to be formed in operational process, the information of detection is more comprehensive, does not need special magnetizing assembly, simple to operation, and the cost of detection is lower, has good application prospect in field of non destructive testing.Have developed a kind of damage check instrument based on piezomagnetic effect herein, stress for existing in on-line checkingi pipeline is concentrated, corrosion, the damaged metals such as fault in material, the damage check instrument of existing piezomagnetic effect is generally only limitted to use in laboratory, and circumstance complication out of doors, in general laboratory, instrument cannot adapt to the variable-diameter structure of pipeline, vibration in detection and severe outdoor site environment, cause testing result inaccurate or cannot measure at all, the application devises a kind of multi-usage for this reason, the damage check instrument based on piezomagnetic effect that reliability is strong, to the safety detection technology level improving domestic oil and gas pipes, timely and effective preventing is of great significance because pipe damage destroys the security incident tool caused.
Summary of the invention
The invention provides a kind of damage check instrument based on piezomagnetic effect, it is made up of signal acquiring system, electro-optical distance measurement system, signal processing system and chassis system, signal acquiring system is one scan probe, scanning head has a cross bar, and magnetic induction sensor array, temperature sensor are integrated on cross bar; Signal processing system comprises filtering and amplifying circuit, signal amplification circuit, multi-way switch, A/D change-over circuit, computer system, in the computer system of signal processing system, signal processing software is installed, and computer system is connected with warning device with interpersonal interactive device, the signal that the magnetic induction sensor array of signal acquiring system gathers enters computer system through signal amplification circuit filter, multi-way switch, A/D change-over circuit; Electro-optical distance measurement system is directly connected with computer system; The signal of temperature sensor collection enters computer system through signal amplification circuit, multi-way switch, A/D change-over circuit, it is characterized in that: wireless transmitting and receiving device is equipped with at damage check instrument top, can the moving forward and backward of remote control damage check instrument by described wireless transmitting and receiving device, and data are sent in computer system; Described magnetic induction sensor array is fixed on the cross bar of scanning head, and the position of magnetic induction sensor can free adjustment, and described cross bar is coupled together by turning joint by multistage aluminium alloy, can according to the shape free bend of detected component.
Be more preferably, described magnetic induction sensor is screwed on cross bar, the quantity of magnetic induction sensor can be selected as required, when the more magnetic induction sensor of needs, magnetic induction sensor is fixed on the reserved passageway of cross bar by direct screw, and damage check instrument can identify automatically; When certain magnetic induction sensor damages, can directly change.
Be more preferably, above described cross bar, have a rule, for the equidistant arrangement of multiple magnetic induction sensor.
Be more preferably, electro-optical distance measurement system comprises light emitting diode, lens subassembly, imaging sensor and control chip, and electro-optical distance measurement system is without the need to calibration.
Be more preferably, described chassis system comprises carrier frame, variable speed drive system, bevel gear drive assembly, front axle, rear axle, outer train and interior train, chassis system is used for carrying aforesaid signal acquiring system, the functional module element of electro-optical distance measurement system, and can carry out advancing or retreating according to the instruction of operator, wherein, variable speed drive system, bevel gear drive assembly, outer train, interior train is all fixed on carrier frame, variable speed drive system is according to instruction outputting power, through bevel gear drive component passes to front axle and rear axle, front axle and rear axle are equipped with outer train and interior train, before outer train has 4 wheels to be positioned at, the end of rear axle, interior train also has 4 wheels, coaxial and be positioned at the inner side of outer train with outer train, interior wheel diameter is less than foreign steamer.
Be more preferably, described interior train coaxial wheels is apart from adjustable.
Be more preferably, described carrier frame is rectangle, its right angle is provided with vertically through hole, snubber assembly is installed in hole, interior land is provided with in hole, snubber assembly comprises buffering long spiro nail, pad, buffing pad, first spring, second spring, when mounted, the sheathed pad of buffering long spiro nail, interior land from bottom to top through hole after first spring, the top, upper end of the first spring is located at below interior land, the top, lower end of the first spring is located on pad, be provided with in buffing pad and the blind screw hole cushioning long spiro nail and match, fix with buffering long spiro nail screw thread after sheathed second spring of buffing pad, buffing pad is supported in the upper end of the second spring, the upper surface of interior land is supported in its lower end, buffering long spiro nail is followed successively by from the bottom to top to which form, pad, first spring, interior land, second spring, the arrangement of buffing pad, be installed on four buffing pads after each functional module of damage check instrument is assembled into entirety.
Be more preferably, also comprise automatically controlled support sub-scanning, damage check instrument is placed on the slide plate of the track of automatically controlled support, test specimen is placed on the panel of the bottom of automatically controlled support, wherein panel can move up and down, and track is fixing, by carrying out remote control to slide plate, at the uniform velocity control damage check instrument sweep velocity artificially.
Be more preferably, respectively have 5 minute bubbles at the top of damage check instrument and rear wall, show that damage check instrument is in horizontality when five minute bubbles at top are all placed in the middle; Show that damage check instrument is in plumbness when 5 minute bubbles of rear wall are all placed in the middle, thus assist the level of damage check instrument magnetic induction sensor, vertical calibration.
Be more preferably, also comprise horizontal stand auxiliary corrective magnetic induction sensor, horizontal stand comprises the shank of a flat board and 4 support plate, each shank has screw for regulating dull and stereotyped height, flat board there are 4 bubbles, when damage check instrument is placed on horizontal stand, can by reversing the screw of shank and make the bubble in flat board placed in the middle thus making horizontal stand be up to the standard state.
Beneficial effect of the present invention:
1, the scanning head of damage check instrument have employed flexible cross bar, better adapts to the detected member of various shape.
2, damage check instrument have employed radio transmission apparatus, both remote-controlled damage check instrument, reduce the error of either scans, the data that signal acquiring system and electro-optical distance measurement system can be obtained again are by being wirelessly transmitted in signal processing system, reduce the trouble of wire transmission, substantially increase the dirigibility of damage check instrument; And damage check instrument chassis system comprises outer interior two trains, snubber assembly, damage check instrument is travelled can smooth transition to pipeline reducing diameter district, guarantee handling safety, and chassis system running part have employed one-level bevel gear drive assembly, the kind of drive is very succinct, reliable, enables damage check instrument tackle various severe, complex detection environment at detected component better during larger or outdoor detection.
Accompanying drawing illustrates:
Fig. 1, damage check instrument structural representation of the present invention
Fig. 2, be scanning head structural representation of the present invention
Fig. 3, be chassis system structural representation of the present invention
Fig. 4, be buffer unit structure schematic diagram of the present invention
Fig. 5, be the automatically controlled support schematic diagram of the present invention
Fig. 6, schematic diagram for level frame of the present invention
Reference numeral:
1, damage check instrument, 2-1, signal amplification circuit, 2-2, signal amplification circuit filter, 3, multi-way switch, 4, A/D conversion circuit, 5, computer system, 6, signal processing software, 7, interpersonal interactive device, 8, warning device, 9, control chip, 10, imaging sensor, 11, prism, 12, lens subassembly, 13, light emitting diode, 14, wired data transfer interface, 15, wireless transmitting and receiving device, 16, bevel gear drive assembly, 17, interior train, 18, front axle, 19, outer train, 20, snubber assembly, 21, carrier frame, 22, rear axle, 23, variable speed drive system, 24, buffing pad, 25, second spring, 26, first spring, 27, pad, 28, buffering long spiro nail, 29, interior land, 30, rule, 31, probe, 32, track, 33, sample to be tested, 34, slide plate, 35, minute bubbles, 36, shank, A, signal acquiring system, B, electro-optical distance measurement system, C, signal processing system
Embodiment:
See accompanying drawing 1, should be made up of signal acquiring system A, electro-optical distance measurement system B, signal processing system C and chassis system based on the damage check instrument of piezomagnetic effect.
Signal acquiring system is one scan probe, scanning head comprises magnetic induction sensor array, temperature sensor and cross bar, in order to improve detection efficiency, this magnetic induction sensor array is the hyperchannel form adopting multiple sensor composition, magnetic induction sensor adopts the AMR HMC1021 series 4 end bridge-type anisotropic magnetoresistive sensor of the up-to-date production of Honeywell company, compared with traditional universal magnetic induction sensor of 3 end, there is highly sensitive (can reach the magnitude of 10-9T), volume is little, price is low, good temp characteristic, frequency of operation advantages of higher.Particularly chip carries offset and set/reset function pin, can get rid of stilling the theatre interference and resist strong magnetic and destroy.HMC1021 type magnetic resistance being combined with reset circuit, computing circuit, for measuring Weak magentic-field, three magnitudes will be exceeded than the precision of Hall chip sensor.This scanning head is configurable pulse degaussing circuit and magnetic shielding circuit also, to eliminate external magnetic field interference and the impact of self residual magnetism, ensures in weak magnetic survey, have higher precision.
Fig. 2 is scanning head structural representation of the present invention, and magnetic induction sensor array is secured on the cross bar of scanning head by screw, and the position of magnetic induction sensor can manual free adjustment.What cross bar adopted is aluminum alloy materials, avoids forming interference to testing result.The quantity of magnetic induction sensor can freely be changed as required, and when the more magnetic induction sensor of needs, be directly screwed by magnetic induction sensor in reserved duct, machine can identify automatically; When certain magnetic induction sensor damages, can directly change, convenient maintenance in the future.Cross bar type can be divided into the type such as 4 ducts, 8 ducts, 16 ducts, also can select the duct of other numbers as required.In the prior art, cross bar is nonadjustable rigid member, bad adaptability, and therefore in the application, cross bar is designed to be coupled together by movable joint by multistage aluminium alloy, can free bend as required.Such as, when instrument is for detecting circular pipeline, cross bar can be bent to circle; During for detecting steel plate, can be stretching by cross bar; When for detecting square member, cross bar can be bent to form an angle of 90 degrees.
In order to adjust the position of magnetic induction sensor more exactly, above cross bar, add a rule.Wherein 0 middle, numerical value increases progressively respectively to both sides, unit is mm, and minimum scale is 1mm.The material of rule is aluminium alloy, to avoid magnetic field to the interference of measurement result.
As can be seen from Figure 1, electro-optical distance measurement system forms primarily of light emitting diode 13, lens subassembly 12, prism 11, imaging sensor 10 and control chip 9.This system sends light by light emitting diode 13, after the reflection of prism 11, light with 30 degree of angle directive detected member surfaces, and then by reflectance-transmittance one piece of lens feedback of plane on imaging sensor 10.
When damage check instrument moves time, imaging sensor 10 record obtains continuous print pattern, then passes through control chip 9 to front and back every pictures comparative analysis process, with the direction of judgment means movement and displacement, thus obtains auto levelizer X, the mobile numerical value of Y-direction.Control chip 9, to after these numerical value process, passes to the computer system 5 of signal processing system C.The sample frequency of electro-optical distance measurement system B is the highest can reach 3000Frames/sec(frame/second), that is its energy acquisition and processing 3000 image in 1 second, and traditional mechanical guide wheel measuring distance device, its maximum sweep rate (when step-length is 1mm) can only reach 0.2-0.3 meter per second, minimum measurement step-length is only 1mm, and the precision adopting this electro-optical distance measurement system B to reach is higher than the former far away, sweep velocity can reach 5 meter per seconds the soonest, and minimum measurement step-length can reach 0.01mm.And user can set the precision required for oneself in computer system 5.Without the need to correcting when the more important thing is that native system is found range, automatically carrying out calculating distance by electro-optical distance measurement service system, avoiding the error that loaded down with trivial details trimming process and correction bring.
Signal processing system C transmits for the treatment of with analytic signal acquisition system A and electro-optical distance measurement system B the signal come, and these signals send signal processing system C to by wireless transmitting and receiving device 15 or wired data transfer interface 14.The signal that the magnetic induction sensor array of signal acquiring system A gathers enters computer system 5 through signal amplification circuit filter 2-2, multi-way switch 3, A/D change-over circuit 4, the wherein input end of the output termination A/D change-over circuit 4 of signal amplification circuit filter 2-2, the input end of the output termination computer system 5 of A/D change-over circuit 4; Electro-optical distance measurement system B is directly connected with computer system 5; The signal of temperature sensor collection enters computer system through signal amplification circuit 2-1, multi-way switch 3, A/D change-over circuit 4, in the computer system 5 of signal processing system C, signal processing software 6 is installed, and computer system 5 is connected with warning device 8 with interpersonal interactive device 7.
A wireless transmitting and receiving device 15 is arranged at the top of damage check instrument, when using wirelessly transmitting data, the power supply of damage check instrument is provided by battery, both remote-controlled damage check instrument when using wireless communication mode, reduce the error of either scans, the data that signal acquiring system and electro-optical distance measurement system can be obtained again are by being wirelessly transmitted in signal processing system, substantially increase the dirigibility of damage check instrument, enable damage check instrument during larger or outdoor detection, tackle various severe, complex detection environment better at detected component.The rear side of damage check instrument has a wired data transfer interface 14, is sent on signal processing system C by cable data line by data, and the power supply now of damage check instrument is also provided by cable data line.When Indoor measurement or detection means less time, carry out transmission data with cable data line more convenient.
Fig. 3 is chassis system structural representation of the present invention, chassis system is made up of carrier frame 21, variable speed drive system 23, bevel gear drive assembly 16, front axle 18, rear axle 22, outer train 19, interior train 17 and snubber assembly 20, chassis system is used for carrying the functional module element of aforesaid signal acquiring system, electro-optical distance measurement system, and can carry out advancing or retreating according to the instruction of operator.Carrier frame 21 can design according to actual needs, and be preferably rectangle, variable speed drive system 23, bevel gear drive assembly 16, outer train 19, interior train 17 and snubber assembly 20 are fixed on carrier frame 21.Variable speed drive system is according to instruction outputting power, front axle 18 and rear axle 22 is passed to through bevel gear drive assembly 16, front axle 18 and rear axle 22 are equipped with outer train 19 and interior train 17, before outer train 19 has four wheels to be positioned at, the end of rear axle, interior train also has four wheels, coaxial and be positioned at the inner side of outer train with outer train 19, when damage check instrument detects out of doors, often can run into the situation of pipeline reducing diameter, and some pipeline can in very short distance repeatedly reducing, existing detector only has outer train, wheelspan between two coaxial wheels is fixed, when detected caliber is less than wheelspan, detector cannot be led by pipeline effectively, even have the possibility fallen from pipeline, this is more dangerous when detecting the pipeline of high-altitude erection.In this application, in order to overcome the shortcoming of prior art, introduce the concept of interior train, interior train is positioned at the inner side of outer train, and the diameter of inside taking turns is less than foreign steamer, when damage check instrument is walked on large-diameter pipeline or planar member, interior train idle running, when sailing reducing region into when damage check instrument on pipeline and drive towards pipe with small pipe diameter section from Large Diameter Pipeline section, the interior wheel on front axle is conjunctival tubules footpath pipe outer wall gradually, and the foreign steamer on front axle departs from the outer wall of Large Diameter Pipeline pipe gradually and enters idling conditions; And when from pipe with small pipe diameter reducing to Large Diameter Pipeline, the foreign steamer of front axle is gradually in conjunction with the outer wall of Large Diameter Pipeline pipe, inside take turns to depart from from the outer wall of pipe with small pipe diameter pipe gradually and enter idling conditions, so just make damage check instrument in the smooth transition of reducing place, namely ensure that equipment reliability of operation and security, in turn ensure that the stationarity detecting data.Preferably, the coaxial wheels distance of interior train is adjustable.
Fig. 4 is buffer unit structure schematic diagram of the present invention, when damage check instrument travels at pipeline reducing diameter place, there is the situation that center of gravity is raised or reduced sometimes, this can cause the body vibration of damage check instrument, and the impact of the vibration of this rank on this highly sophisticated device of damage check instrument is huge, this is also the reason why existing detector can not adapt to severe testing environment very well, in order to eliminate the impact of vibration on damage check instrument, carrier frame 21 has installed snubber assembly 20, and snubber assembly 20 is preferably mounted at four right angle of rectangle carrier frame 21.The snubber assembly 20 of the application is according to the vibrationproof specialized designs of the chassis system of damage check instrument, the right angle being specially rectangle carrier frame 21 is provided with vertically through hole, interior land 29 is provided with in hole, snubber assembly 20 comprises buffering long spiro nail 28, pad 27, buffing pad 24, first spring 26, second spring 25, when mounted, the sheathed pad 27 of buffering long spiro nail 28, interior land 29 from bottom to top through hole after first spring 26, the top, upper end of the first spring 26 is located at below interior land 29, the top, lower end of the first spring 26 is located on pad 27, be provided with in buffing pad 24 and the blind screw hole cushioning long spiro nail 28 and match, fix with buffering long spiro nail 28 screw thread after sheathed second spring 25 of buffing pad 24, buffing pad 24 is supported in the upper end of the second spring 25, the upper surface of interior land 29 is supported in its lower end, buffering long spiro nail 28 is followed successively by from the bottom to top to which form, pad 27, first spring 26, interior land 29, second spring 25, the arrangement of buffing pad 24, be installed on four buffing pads 20 after each functional module of damage check instrument is assembled into entirety.Because snubber assembly 20 have employed two springs, the up and down vibration transmitted of different directions in motion of damage check instrument therefore can well be tackled.
Fig. 5 is the automatically controlled support schematic diagram of the present invention, when detecting test specimen and being less, manual manipulation mode may be adopted directly on test specimen, to push away damage check instrument, but this can be with the problem of serving.First, when surface of test piece is irregular time, if adopt traditional mechanical gear to find range, the distance recorded can be caused not conform to the actual conditions conjunction, or can not measuring distance.In order to the error brought when overcoming and manually directly push away damage check instrument, an automatically controlled support need be designed, for the advance of damage check instrument.
The all material of automatically controlled support is all made with aluminium alloy or other nonferromagnetic materials, effectively can avoid the interference to testing result.Tested component is placed on the panel under the track of automatically controlled support, and panel can move up and down, and track is fixing, thus adjusts the distance of track and detection means by moving up and down panel.Track there are four pieces of slide plates, put damage check instrument above.Slide plate there is chip, and is connected with computer system 5, control slide plate movement in orbit by computer system 5 thus control the advance of damage check instrument.The field signal of tested component is obtained by damage check instrument, and the distance of scanning is then controlled by computer system 5 and obtains, thus obtains the distribution of magnetic field on whole test specimen.Scanning distance both can be obtained by the electro-optical distance measurement system B of damage check instrument, also can be controlled to obtain by computer system 5.
About the orientation problem of scanning head, the zero graduation point consistency from top to bottom on the zero graduation point of panel and track.First by slide plate position zero in orbit, being then placed on slide plate by damage check instrument, aligns with slide plate in the center of scanning head, just can guarantee that the distance scanned is corresponding with actual distance.
Fig. 6 is horizontal stand schematic diagram of the present invention, and damage check instrument will correct to the vertical magnetic induction sensor to magnetic field measurement level before use.Require damage check instrument difference horizontal positioned when correction and vertically place, if directly manually correct, easily occur deviation when horizontal positioned and vertical placement, be difficult to correct exactly.Therefore a level frame is adopted, in order to facilitate the calibration of sensor., there are 4 minute bubbles at the top of level frame as shown in Figure 6, is used for display support plate whether level.When 4 minute bubbles all occupy middle time, show horizontal stand level.Support level support plate be 4 shanks, a screw is arranged at the top of each shank, can adjust the height of leg when rotation among a small circle, thus adjusts dull and stereotyped distance.
At top and the rear wall of damage check instrument, add five minute bubbles respectively, whether place level with vertical for display instrument.Damage check instrument is lain in a horizontal plane on level frame, adjusting screw, until five of top minute bubbles are all placed in the middle, show damage check instrument placement level, calibration can be started.Again damage check instrument is vertically placed, adjusting screw, until five of rear wall minute bubbles are all placed in the middle, show that damage check instrument has been placed vertically, calibration can be started.
Obviously, those skilled in the art are according to grasped technical know-how and conventional techniques means, and according to above-described content, can also make the multiple test format not departing from basic fundamental thought of the present invention, these are all within protection scope of the present invention.
Claims (6)
1. the damage check instrument based on piezomagnetic effect, be made up of signal acquiring system, electro-optical distance measurement system, signal processing system and chassis system, signal acquiring system is one scan probe, and scanning head has a cross bar, and magnetic induction sensor array, temperature sensor are integrated on cross bar, signal processing system comprises filtering and amplifying circuit, signal amplification circuit, multi-way switch, A/D change-over circuit, computer system, in the computer system of signal processing system, signal processing software is installed, and computer system is connected with warning device with interpersonal interactive device, the signal that the magnetic induction sensor array of signal acquiring system gathers enters computer system through signal amplification circuit filter, multi-way switch, A/D change-over circuit, electro-optical distance measurement system is directly connected with computer system, the signal of temperature sensor collection enters computer system through signal amplification circuit, multi-way switch, A/D change-over circuit, it is characterized in that: wireless transmitting and receiving device is equipped with at damage check instrument top, can the moving forward and backward of remote control damage check instrument by described wireless transmitting and receiving device, or data are sent in computer system, described magnetic induction sensor array is fixed on the cross bar of scanning head, the position of magnetic induction sensor can free adjustment, described cross bar is coupled together by turning joint by multistage aluminium alloy, can according to the shape free bend of detected component, described magnetic induction sensor is screwed on cross bar, the quantity of magnetic induction sensor can be selected as required, when the more magnetic induction sensor of needs, magnetic induction sensor is fixed on the reserved passageway of cross bar by direct screw, and damage check instrument can identify automatically, when certain magnetic induction sensor damages, can directly change, above described cross bar, have a rule, for the equidistant arrangement of multiple magnetic induction sensor, electro-optical distance measurement system comprises light emitting diode, lens subassembly, imaging sensor and control chip, and electro-optical distance measurement system is without the need to calibration, and described chassis system comprises carrier frame, variable speed drive system, bevel gear drive assembly, front axle, rear axle, outer train and interior train, chassis system is used for carrying aforesaid signal acquiring system, the functional module element of electro-optical distance measurement system, and can carry out advancing or retreating according to the instruction of operator, wherein, variable speed drive system, bevel gear drive assembly, outer train, interior train is all fixed on carrier frame, and variable speed drive system, according to instruction outputting power, through bevel gear drive component passes to front axle and rear axle, front axle and rear axle is equipped with outer train and interior train, before outer train has 4 wheels to be positioned at, the end of rear axle, interior train also has 4 wheels, and coaxial and be positioned at the inner side of outer train with outer train, interior wheel diameter is less than foreign steamer.
2. damage check instrument according to claim 1, described interior train coaxial wheels is apart from adjustable.
3. damage check instrument according to claim 1, described carrier frame is rectangle, its right angle is provided with vertically through hole, snubber assembly is installed in hole, interior land is provided with in hole, snubber assembly comprises buffering long spiro nail, pad, buffing pad, first spring, second spring, when mounted, the sheathed pad of buffering long spiro nail, interior land from bottom to top through hole after first spring, the top, upper end of the first spring is located at below interior land, the top, lower end of the first spring is located on pad, be provided with in buffing pad and the blind screw hole cushioning long spiro nail and match, fix with buffering long spiro nail screw thread after sheathed second spring of buffing pad, buffing pad is supported in the upper end of the second spring, the upper surface of interior land is supported in its lower end, buffering long spiro nail is followed successively by from the bottom to top to which form, pad, first spring, interior land, second spring, the arrangement of buffing pad, be installed on 4 buffing pads after each functional module of damage check instrument is assembled into entirety.
4. damage check instrument according to claim 3, also comprise automatically controlled support sub-scanning, damage check instrument is placed on the slide plate of the track of automatically controlled support, test specimen is placed on the panel of the bottom of automatically controlled support, wherein panel can move up and down, and track is fixing, by carrying out remote control to slide plate, at the uniform velocity control damage check instrument sweep velocity artificially.
5. damage check instrument according to claim 3, is characterized in that: respectively have 5 minute bubbles at the top of damage check instrument and rear wall, shows that damage check instrument is in horizontality when 5 minute bubbles at top are all placed in the middle; Show that damage check instrument is in plumbness when 5 minute bubbles of rear wall are all placed in the middle, thus assist the level of damage check instrument magnetic induction sensor, vertical calibration.
6. damage check instrument according to claim 3, it is characterized in that: also comprise horizontal stand auxiliary corrective magnetic induction sensor, horizontal stand comprises the shank of 1 flat board and 4 support plate, each shank has screw for regulating dull and stereotyped height, flat board there are 4 bubbles, when damage check instrument is placed on horizontal stand, can by reversing the screw of shank and make the bubble in flat board placed in the middle thus making horizontal stand be up to the standard state.
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| CN106053592B (en) * | 2016-06-13 | 2018-04-20 | 河海大学 | Real bridge welding seam scanner and its scan method |
| CN106442706B (en) * | 2016-08-26 | 2024-03-01 | 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 | Underground steel wire dynamic detector |
| CN107917952A (en) * | 2017-11-15 | 2018-04-17 | 四川钜莘信合科技有限公司 | Oil-gas pipeline detection device and method |
| CN112881514B (en) * | 2021-01-22 | 2023-08-29 | 北京埃彼咨能源科技有限公司 | Magnetic leakage imaging internal detector for oil and gas pipeline |
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