CN2411484Y - Corrosion defect detection device for underground on-service long distance pipeline - Google Patents
Corrosion defect detection device for underground on-service long distance pipeline Download PDFInfo
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- CN2411484Y CN2411484Y CN 00204917 CN00204917U CN2411484Y CN 2411484 Y CN2411484 Y CN 2411484Y CN 00204917 CN00204917 CN 00204917 CN 00204917 U CN00204917 U CN 00204917U CN 2411484 Y CN2411484 Y CN 2411484Y
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Abstract
The utility model relates to a corrosion defect detection device for an underground on-service long distance pipeline, which comprises a detector and a PC; the detection device also comprises a land mark box; a front leather cup 1 is arranged around the detector and tightly contacted with the inner wall of the pipeline; ring-shaped steel brushes 6 are arranged on a magnet 8 and contacted with the inner wall of the pipeline; a probe head 7 is arranged between the ring-shaped steel brushes 6; the probe head 7 is closely contacted with the pipe wall; more than one mileage wheel 10 is arranged on the detector; the mileage wheel 10, and a recorder 9 and the probe head 7 are electrically connected with an integrated circuit U61, and meanwhile, the U61 is connected with a single-chip computer U41. No power driver is arranged in the pipe of the utility model. The utility model is suitable for on-service detection of the long distance pipeline, and the coupling method is suitable for multiple deformation and bending on the pipeline. The utility model has the advantage of high precision.
Description
The utility model belongs to the harmless magnetic inspection field of robotization, specifically is that long distance pipeline corrodes detection technique in labour, is that a kind of detection is underground at labour long distance pipeline corrosion default pick-up unit.
Underground long distance pipeline is embedded in underground all the year round, environment badly in addition the defective in the preservative treatment be easy to form corrosion, cause the decline of tube wall strength, reveal the massive losses and the serious environmental that cause economically until pipeline and pollute.For in time finding defective, at present nondestructive testing techniques that adopt more.
Magnaflux is immersed in workpiece to adsorb in the suitable magnetic flaw detection ink and forms the magnetic trace, is carrying out the judgement of defective by visual or scan camera shooting; Thereby Rotational magnetic field method will magnetize workpiece and carry out forming the magnetic trace synchronously with the sprinkling magnetic flaw detection ink, carry out the defective judgement by visual examination.This kind detection mode is mainly used in the weld seam manual detection of sheet material.Chinese patent ZL90109231 discloses a kind of automatic defect detection technology using electromagnetic ultrasonic, thereby this technology is passed through the electric field of alternation at tested workpiece internal excitation alternating magnetic field excitation ultrasound ripple, utilize ultrasound wave that tested workpiece is detected, only be applicable to the nondestructive examination of sheet metal.Above method and apparatus all is not applied to the detection in long distance pipeline field, more is not suitable for detecting in labour of long distance pipeline.
Chinese patent CN1136169A discloses a kind of magnetic fault detector, and purpose is to survey buried underground oil transportation, the defective of gas transmission line tubing inside, this device part that comes with some shortcomings:
Driving is moved in long distance pipeline by microkinetic, because it is characteristics that long distance pipeline is carried with long distance, institute's energy requirement is big, and battery can only provide finite energy, although device also proposes to utilize the interior pressure reduction of pipe as power source, but on its structure not with the sealing of tube wall, can not realize, so be not suitable for detecting of long distance pipeline in labour.
Adopt displacement signal that computing machine write down be with computer recording begin to be starting point, but long distance pipeline is buried all the year round underground and situation is complicated, the actual displacement signalling means can not accurately be determined defective locations.
Adopt the gap coupling process, owing to have a large amount of distortion and elbow on the pipeline, the normal running clearance for assurance device when long distance pipeline detects can not be too little, to such an extent as to most of magnetic line of force is revealed and can't make tube wall reach magnetic saturation, influences accuracy of detection.
Self does not have sealing system, and the not stopping transportation detection case complexity and the environment of long distance pipeline are abominable, and detecting instrument is devoted in the pumped (conveying) medium of High Temperature High Pressure, can not guarantee the safe operation in pipeline of electrical equipment, mechanical part.
The utility model purpose be overcome the deficiencies in the prior art part and the long distance detecting of a kind of suitable long distance pipeline is provided, can accurately determines defective locations, the detection that accuracy of detection is high is underground is using as a servant long distance pipeline corrosion default pick-up unit.
The utility model purpose realizes by following content:
Underground at labour long distance pipeline corrosion default pick-up unit, comprise detecting device and PC, detecting device is formed by being divided into the preceding leather cup 1, preceding steel brush 2, leather cup 4, universal joint 5, steel brush 6, probe 7, magnet 8, registering instrument 9, the mileage wheel 10 that drive joint, magnet probe joint and record etiquette, magnet 8 is housed on detecting device, magnet 8 is collar plate shape magnet, the centre has the coupling soft iron to connect, and pick-up unit also has the land mark box.
The utility model purpose also realizes by following content:
The preceding leather cup 1 that closely contacts with inner-walls of duct is arranged around detecting device; The annular steel brush 6 that contacts with inner-walls of duct is housed on magnet 8; Probe 7 is housed between annular steel brush 6, and probe 7 is adjacent to tube wall, at the mileage wheel 10 that is equipped with on the detecting device more than; Mileage wheel 10 is electrically connected integrated circuit U61 with registering instrument 9 and probe 7, and U61 is connected with the U41 single-chip microcomputer simultaneously.
Annular brace leather cup 4 and preceding steel brush 2 are housed on the detecting device.
Mileage wheel 10 is made of Hall element and contacts with the tube wall rolling.
At the detecting device connecting portion universal joint 5 is housed.
The land mark box is made up of shell 11, battery 12, circuit board 13, panel communication port 14, circuit board 13 comprises sensor and analog signal processing circuit, single-chip microcomputer digitized processing circuit, data communication circuit, it is characterized in that: sensor is connected with operational amplifier, the operational amplifier amplifier is connected with single-chip microcomputer U1 through A/D chip U2, and single-chip microcomputer U1 is connected with storer U6.
Sensor adopts the induction type magnetic sensor.
The box-packed clock crystal oscillator circuit that the high precision temperature compensating crystal oscillator is arranged of detecting device and land mark, power supply adopts high-energy battery.
The PC that ground data is handled adopts universal microcomputer, and detecting device and land mark box all have the rs-232 standard Asynchronous Serial Interface.
The utility model advantage is: unpowered driving in the pipe, utilize the interior pressure reduction of pipe as power source, applicable to detecting in labour of long distance pipeline.Adopt the actual displacement signalling means, can accurately determine defective locations.The coupling process that adopts is applicable to and has a large amount of distortion and elbow, accuracy of detection height on the pipeline.
The utility model description of drawings is as follows:
Fig. 1 is underground structural representation at labour long distance pipeline corrosion default pick-up unit detecting device;
Fig. 2 is the circuit diagram of detector recording instrument;
Fig. 3 is underground at labour long distance pipeline corrosion default pick-up unit land mark box structural drawing;
Fig. 4 is the principle schematic of marker cassette;
Fig. 5 is the circuit diagram of marker cassette.
Be described in detail embodiment below in conjunction with accompanying drawing.
The main application of detecting device is to determine or the inside and outside metal loss that causes that corrodes of description pipeline, secondly also can detect indenture, hard spot and the conduit fittings etc. of pipeline.Principle of work is to detect organ pipe to be coupled by special steel brush inner the branch with self-contained magnet, produces an axial magnetized loop band with tested tube wall.Whole detecting device is by cup leather packing when moving in pipeline, by the pressure differential of pumped (conveying) medium before and after the detecting device promote its in pipeline to preceding walking, if tube wall does not have defective, then the magnetic line of force is limited within the tube wall, if inside pipe wall or outer wall defectiveness, then the magnetic line of force will pass outside the tube wall and produce so-called leakage field (Magnetic Flux leakage-MFL).Stray field is positioned at probe between two magnetic poles, that be close to tube wall and detects, and produces corresponding induced signal, and these signals are recorded to after filtering, processing and amplifying in the storer on the detecting device, again through data playback process, it are judged identification.The mileage wheel produced the mileage signal when detecting device moved in pipeline, recorded in the storer together with data.The outside at pipeline also is placed with marker cassette, be used for when the pipe internal detector by the time note the time that detecting device at that time passes through, after the data of taking out data and detecting device taking-up from marker cassette are carried out joint account, get final product the position of the defective of accurate localization long distance pipeline.
Detecting device is made up of preceding leather cup 1, preceding steel brush 2, battery 3, leather cup 4, universal joint 5, steel brush 6, probe 7, magnet 8, registering instrument 9, mileage wheel 10, can be divided into upper-part driving joint, magnet probe joint and record etiquette.
Driving joint is the source of whole pipe internal detector electronic section energy and the power resources of whole detecting device mechanical part.It is by preceding leather cup 1, preceding steel brush 2, battery 3 three parts, and preceding leather cup 1 closely contacts with inner-walls of duct and seals, and makes to form pressure differential in the delivery pipe 11 before and after the medium, thereby promotes detector motion.Preceding steel brush 2 contacts with inner-walls of duct plays a supporting role to battery 3.Battery 3 is by on line linkage record etiquette.Driving joint connects with magnet probe joint by universal joint 5.
Magnet probe joint has magnet 8 and probe 7, and magnet 8 has coupling soft iron two collar plate shape magnet to constitute in the middle of being.Steel brush 6 contacts with inner-walls of duct, tube wall is coupled in magnetic field tube wall is fully magnetized, and probe 7 is adjacent to tube wall by spring, and probe 7 lead-in wires are introduced the record etiquettes, import induction type magnetic sensor or the detected signal of Hall element into registering instrument.Magnet probe joint is connected with the record etiquette by universal joint.
The record etiquette is made of registering instrument 9, mileage wheel 10, leather cup 4.Mileage wheel 10 forms the mileage pulse signal when detecting device moves, record in the data by registering instrument 9, and leather cup 4 is played a supporting role.The mileage of registering instrument 9 wheel 10 is made of Hall element, when contacting, provide signal owing to electromagnetic action with tube wall, the mileage pulse is respectively by four circuit-switched data inputs: ODO1S, ODO1C, ODO2S, ODO2C be at first by among the U61, skids the wheel of preferred pulse the best as active wheel in order to prevent mileage wheel 10.Preferred process is handled by single-chip microcomputer U61.The mileage pulse that obtains enters the U41 single-chip microcomputer.Handle mileage signal IRQ2 of output.U41 also exports a foot signal, i.e. IRQ5 signal when the mileage wheel moves one foot.Single-chip microcomputer U4 also exports vernier time signal IRQ3.Signal IRQ2, IRQ3, IRQ5 give the PC host computer processes respectively.IRQ2, IRQ3, IRQ5 are respectively through the down trigger of principal computer.IRQ2 triggers principal computer and carries out data acquisition and data storage.IRQ3 triggers principal computer and carries out time accumulative total.IRQ5 triggers principal computer and carries out a foot record.
According to the internal diameter of the pipeline difference, the joint number joint number of detecting device is few more good more, but the driving of detecting device saves, probe saves, the record etiquette is indispensable, its lump can certainly be arrived together.Detecting device should reduce length as far as possible, increase handling capacity.
The land mark part is made up of land mark box shell 11, battery 12, circuit board 13, panel communication port 14, pilot lamp 15, switch 16 etc.Circuit board 3 comprises sensor and analog signal processing circuit, single-chip microcomputer digitized processing circuit, clock circuit, data communication circuit; Sensor adopts the induction type magnetic sensor, and when detecting device passed through, the induction type magnetic sensor utilized the variation of the magnetic flux in the inductive coil magnetic core to determine the variation in magnetic field.Single-chip microcomputer is as the control core of system, the collection of control signal, conversion and analyzing and processing, the magnetic detection sensor to simulating signal through carrying out waveform processing through first order operational amplifier, be amplified into A/D chip U2 through two three-stage operational amplifiers, form digital signal through conversion process, read in by single-chip microcomputer U1 and form the magnetic leakage signal Wave data.Single-chip microcomputer is analyzed, is handled and store the signal of gathering.Single-chip microcomputer stored up among the storer U6 with the leakage field Wave data by the clock chip U3 access present clock time.The U5 chip is gone here and there and is changed the memory address that forms the U6 memory chip.U3 is a high accuracy clock source, be used for writing down the pipe interior detecting device by the time time.Data communication is undertaken by U12 standard asynchronous serial line interface RS-232.
The utility model detecting device and land mark close all by the clock crystal oscillator of high precision temperature compensating crystal oscillator as single-chip microcomputer, and power supply adopts high-energy battery.The PC that ground data is handled adopts universal microcomputer, and carries out communication by the rs-232 standard Asynchronous Serial Interface between the three.The main devices model is in the utility model example circuit diagram: U1-68hc705c8; U2-ADC0834; U3-ICM7170PG; U4-MAX638; U5-74HC164; U6-6264; U7-TXCO; U9-MAX764; U10-CAM3240; U11-LM358; U12-MAX3232; U61-PIC16C71; U51-74L373; U41-68hc705c8p.
Claims (9)
- One kind underground at labour long distance pipeline corrosion default pick-up unit, comprise detecting device and PC, detecting device is formed by being divided into the preceding leather cup (1), preceding steel brush (2), leather cup (4), universal joint (5), steel brush (6), probe (7), magnet (8), registering instrument (9), the mileage wheel (10) that drive joint, magnet probe joint and record etiquette, magnet (8) is housed on detecting device, magnet (8) is collar plate shape magnet, the centre has the coupling soft iron to connect, and it is characterized in that: pick-up unit also has the land mark box.
- 2. according to claim 1 underground at labour long distance pipeline corrosion default pick-up unit, it is characterized in that: the preceding leather cup (1) that closely contacts with inner-walls of duct is arranged around detecting device; The annular steel brush (6) that contacts with inner-walls of duct is housed on magnet (8); Probe (7) is housed between annular steel brush (6), and probe (7) is adjacent to tube wall, at the mileage wheel (10) that is equipped with on the detecting device more than; Mileage wheel (10) is electrically connected integrated circuit (U61) with registering instrument (9) and probe (7), (U61) is connected with (U41) single-chip microcomputer simultaneously.
- 3. according to claim 1,2 described underground, it is characterized in that: annular brace leather cup (4) and support steel brush (2) are housed on the detecting device at labour long distance pipeline corrosion default pick-up unit.
- 4. according to claim 1,2 described underground at labour long distance pipeline corrosion default pick-up unit, it is characterized in that: mileage wheel (10) is made of Hall element and rolls with tube wall and contacts.
- 5. according to claim 1 underground at labour long distance pipeline corrosion default pick-up unit, it is characterized in that: universal joint (5) is housed at the detecting device connecting portion.
- 6. according to claim 1 underground at labour long distance pipeline corrosion default pick-up unit, the land mark box is made up of shell (11), battery (12), circuit board (13), panel communication port (14), circuit board (13) comprises sensor and analog signal processing circuit, single-chip microcomputer digitized processing circuit, data communication circuit, it is characterized in that: sensor is connected with operational amplifier, the operational amplifier amplifier is connected with single-chip microcomputer (U1) through A/D chip (U2), and single-chip microcomputer (U1) is connected with storer (U6).
- 7. according to claim 1,6 described underground at labour long distance pipeline corrosion default pick-up unit, it is characterized in that: sensor adopts the induction type magnetic sensor.
- 8. according to claim 1,6 described underground at labour long distance pipeline corrosion default pick-up unit, it is characterized in that: the box-packed clock crystal oscillator circuit that the high precision temperature compensating crystal oscillator is arranged of detecting device and land mark, power supply adopts high-energy battery.
- 9. according to claim 1,6 described underground at labour long distance pipeline corrosion default pick-up unit, it is characterized in that: the PC that ground data is handled adopts universal microcomputer, and detecting device and land mark box all have the rs-232 standard Asynchronous Serial Interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00204917 CN2411484Y (en) | 2000-03-03 | 2000-03-03 | Corrosion defect detection device for underground on-service long distance pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00204917 CN2411484Y (en) | 2000-03-03 | 2000-03-03 | Corrosion defect detection device for underground on-service long distance pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN2411484Y true CN2411484Y (en) | 2000-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00204917 Expired - Lifetime CN2411484Y (en) | 2000-03-03 | 2000-03-03 | Corrosion defect detection device for underground on-service long distance pipeline |
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Cited By (30)
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|---|---|---|---|---|
| CN1294412C (en) * | 2002-06-26 | 2007-01-10 | 谢自力 | Round inspection monitoring system and method for cathode protection signal of long conveying pipeline |
| CN100354624C (en) * | 2002-01-14 | 2007-12-12 | R·布鲁克斯合伙人公司 | Device for remote inspection of steam generator tubes |
| CN101324477B (en) * | 2007-06-13 | 2011-04-20 | 中国石油天然气集团公司 | High definition mechanical system of pipe leakage detector |
| CN101685064B (en) * | 2008-09-28 | 2011-08-03 | 中国石油化工股份有限公司 | Pipeline reducing diameter detecting device |
| CN101319983B (en) * | 2007-06-06 | 2011-09-07 | 中国石油天然气集团公司 | Probe spring of pipe corrosion detector |
| CN102435669A (en) * | 2010-09-29 | 2012-05-02 | 中国石油大学(北京) | Supporting roller type pipeline inner inspection device and supporting roller type pipeline inner inspection system |
| CN101672429B (en) * | 2009-10-12 | 2012-07-11 | 哈尔滨工程大学 | Petroleum pipeline detecting system |
| CN101655183B (en) * | 2008-09-23 | 2012-07-25 | 天津大学 | Land marking method and land making system of pipe interior detector |
| CN102607939A (en) * | 2012-03-06 | 2012-07-25 | 浙江大学 | Combined type hydraulic loading device for underground pipeline vibration simulation test |
| CN101685062B (en) * | 2008-09-28 | 2012-09-05 | 中国石油化工股份有限公司 | Pipeline reducing diameter detecting device |
| CN102798666A (en) * | 2012-08-06 | 2012-11-28 | 中国石油天然气集团公司 | Axial crack defect internal detector for pipe wall based on magnetostrictive effect |
| CN103308591A (en) * | 2012-03-16 | 2013-09-18 | 中国石油天然气股份有限公司 | Weak magnetic internal detection device for long oil and gas transmission pipeline |
| CN103470959A (en) * | 2013-09-16 | 2013-12-25 | 北京埃彼咨石化科技有限公司 | Oil and gas pipeline intelligent internal detection device based on multi-module combined location |
| CN103604022A (en) * | 2013-11-23 | 2014-02-26 | 清华大学 | High-precision inner detecting device for seabed oil and gas pipeline flaws |
| CN105423138A (en) * | 2016-01-18 | 2016-03-23 | 肖兴江 | Intelligent detector for detecting leakage of oil-gas pipeline |
| CN105674941A (en) * | 2014-11-21 | 2016-06-15 | 中国石油化工集团公司 | Pipeline double-row deformation detection mechanism |
| CN105864644A (en) * | 2016-06-21 | 2016-08-17 | 深圳市发利构件机械技术服务有限公司 | Intelligent detector for deep sea submarine pipelines and detection method |
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| CN106152931A (en) * | 2016-08-25 | 2016-11-23 | 何仕刚 | The high performance pipeline geometry deformation detector measured based on space magnetic field |
| CN107654848A (en) * | 2017-09-28 | 2018-02-02 | 北京华航无线电测量研究所 | A kind of pipeline location and direction detection method |
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| CN110082482A (en) * | 2019-04-29 | 2019-08-02 | 北京航空航天大学 | A kind of oil-gas pipeline internal detector |
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| CN111664784A (en) * | 2019-03-09 | 2020-09-15 | 中国石油天然气股份有限公司 | Device and method for determining deformation position of pipeline |
| CN111964637A (en) * | 2019-05-20 | 2020-11-20 | 北京零偏科技有限责任公司 | Deformation detection portion and pipeline deformation detection device with same |
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- 2000-03-03 CN CN 00204917 patent/CN2411484Y/en not_active Expired - Lifetime
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| CN100354624C (en) * | 2002-01-14 | 2007-12-12 | R·布鲁克斯合伙人公司 | Device for remote inspection of steam generator tubes |
| CN1294412C (en) * | 2002-06-26 | 2007-01-10 | 谢自力 | Round inspection monitoring system and method for cathode protection signal of long conveying pipeline |
| CN101319983B (en) * | 2007-06-06 | 2011-09-07 | 中国石油天然气集团公司 | Probe spring of pipe corrosion detector |
| CN101324477B (en) * | 2007-06-13 | 2011-04-20 | 中国石油天然气集团公司 | High definition mechanical system of pipe leakage detector |
| CN101655183B (en) * | 2008-09-23 | 2012-07-25 | 天津大学 | Land marking method and land making system of pipe interior detector |
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| CN105423138A (en) * | 2016-01-18 | 2016-03-23 | 肖兴江 | Intelligent detector for detecting leakage of oil-gas pipeline |
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| CN106152931A (en) * | 2016-08-25 | 2016-11-23 | 何仕刚 | The high performance pipeline geometry deformation detector measured based on space magnetic field |
| CN107654848A (en) * | 2017-09-28 | 2018-02-02 | 北京华航无线电测量研究所 | A kind of pipeline location and direction detection method |
| CN108413919A (en) * | 2018-01-30 | 2018-08-17 | 中国石油大学(北京) | Pipeline drift diameter detection device |
| CN108955622A (en) * | 2018-04-27 | 2018-12-07 | 福建中海油应急抢维修有限责任公司 | One kind calibrating pigging device and calibrates pigging method |
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| CN111664784A (en) * | 2019-03-09 | 2020-09-15 | 中国石油天然气股份有限公司 | Device and method for determining deformation position of pipeline |
| CN110082482A (en) * | 2019-04-29 | 2019-08-02 | 北京航空航天大学 | A kind of oil-gas pipeline internal detector |
| CN111964637A (en) * | 2019-05-20 | 2020-11-20 | 北京零偏科技有限责任公司 | Deformation detection portion and pipeline deformation detection device with same |
| CN110118819A (en) * | 2019-06-11 | 2019-08-13 | 智云安科技(北京)有限公司 | A kind of pipeline ultra high-definition leakage magnetic detection device with double detection sections |
| CN112130099A (en) * | 2020-09-04 | 2020-12-25 | 中国石油天然气股份有限公司 | Residual magnetism detection device in buried pipeline |
| CN112130099B (en) * | 2020-09-04 | 2024-07-30 | 中国石油天然气股份有限公司 | Residual magnetism detection device in buried pipeline |
| CN112903214A (en) * | 2021-01-12 | 2021-06-04 | 中国石油天然气股份有限公司 | Pipeline leakage point detection device and detection method |
| CN112903214B (en) * | 2021-01-12 | 2022-10-04 | 中国石油天然气股份有限公司 | Pipeline leakage point detection device and detection method |
| CN116106404A (en) * | 2023-04-11 | 2023-05-12 | 东方空间技术(山东)有限公司 | Rocket body defect detection system and method for rocket sub-grade recovery |
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