CN207423884U - Multichannel geomagnetism detector based on magnetic force chromatographic technique - Google Patents
Multichannel geomagnetism detector based on magnetic force chromatographic technique Download PDFInfo
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Abstract
The utility model discloses a kind of multichannel geomagnetism detector based on magnetic force chromatographic technique, including nonmetallic mechanically moving platform and the detection system installed thereon；Detection system include three-dimensional magnetic probe, data acquisition module, meter step encoder and pedometer module, GPS module, power supply module, one-chip computer module and, host computer pad processing display modules；One-chip computer module is connected to receive three-dimensional magnetic field strength signal, moving distance data and location information data respectively with data acquisition module, pedometer module and GPS module, and data are carried out with computing, processing and sends the data to host computer pad processing display modules by communication serial port；The utility model is detected by the chromatography that Distribution of Magnetic Field carries out above oil-gas pipeline, find out improper stress existing for metallic conduit, and the size of the defects of to causing improper stress, position resolve, it was found that insecurity existing for pipeline, provides the grade evaluation of in-service oil-gas pipeline body construction integrality and safety in operation.
Description
Technical field
The utility model is related to a kind of multichannel geomagnetism detectors based on magnetic force chromatographic technique, belong to non-destructive testing neck
Domain.
Background technology
Ferrimagnet has splendid mechanical property, is one of the most widely used material in petroleum industry field.
Ferromagnetic metal oil pipeline is acted in use be subject to various stress, when stress concentration to a certain extent when, component
It is present with local deformation or even develops into gross imperfection, cause component failure, causes the generation of security incident.China is defeated at present
Oil-gas pipeline laying amount is big, buries underground for a long time, excavates difficulty, therefore realizes buried pipeline area of stress concentration under the conditions of no-dig technique
The problem of detection is a urgent need to resolve in security performance detection.
Traditional method for detecting pipeline is although more mature, but there are significant limitations.It is detected to realize outside pipeline
It needs to excavate buried pipeline into the non-contact detecting for carrying out contact detection or lift-off very little height, and pipeline detection is then
Must be by means of pipe robot, the pipeline robot technique in China is not perfect at present, not only to the diameter and pipeline of pipeline
Interior liquid level requires, and robot can need to be implanted into pipe section breakage.Therefore, traditional sensing techniques are also inapplicable
In the ground non-contact detecting of buried pipeline.
Magnetic memory detection technology emerging in recent years is one kind in numerous non-destructive testing technologies, with traditional non-destructive testing
Technology is compared, its superiority highly significant.Since ferrimagnet Distribution of Magnetic Field and stress loading have certain correspondence,
Therefore metal magnetic memory detecting method can be used to carry out the stress mornitoring of effective metal surface or near surface, this method is also
A kind of current lossless detection method that can be effectively early diagnosed, you can to make anticipation before accident occurs, it is seen that gold
The research for belonging to Magnetic memory testing is particularly important to non-destructive testing.
Under geomagnetic field action, pipeline in the soil is buried if there is defect, while has cyclically-varying in pipeline
Load pressure, then during pressure change is increased, the defects of tube body at will form larger internal stress.Due to iron
The magnetoelastic effect of magnetic substance under the stress generated inside pipeline, forms outer stray field at defect of pipeline.With the cycle
The effect of property stress, stray field constantly enhances at defect of pipeline.If it is carried out using high-precision magnetometer along pipeline direction
It measures, the Magnetic fluxleakage distribution at defect of pipeline has following feature：In the horizontal direction of measurement, i.e. Hp (x) directions stray field
There are maximum, in Hp (y) the directions stray field of vertical pipe, there are zeros.Feelings are distributed by detecting ferromagnetic component Surface field
Condition can accurately infer stress concentration or defect.
The Magnetic Memory phenomenon of the exactly ferrimagnet of newest magnetic force chromatography detection technique application, essence is ferromagnetism
The magnetoelastic effect of substance.Newly-built and longtime running ferromagnetic pipeline is carried out by not merging in the case of no-dig technique, gas
It is detected caused by hole, crackle, corrosion etc. the defects of stress concentration.Pointedly propose that repair is built according to defect exception level
View, the generation of the accidents such as prevention pipe perforation, cracking, so as to improve oil-gas pipeline safety service ability and Integrity Management water
It is flat.Therefore Magnetic Detection System is used in oil field with developing a kind of contactless portable multichannel based on magnetic force chromatographic technique
The stress mornitoring of ferrimagnet detects the security performance of iron magnetic material, prevents security incident from occurring to have great meaning
Justice.
Utility model content
The purpose of this utility model is that making up the deficiency of existing Magnetic memory testing equipment, a kind of easy to operate, inspection is provided
Survey accurately contactless portable multichannel ground magnetic indicator loop.
The utility model technical scheme applied to solve the technical problem is as follows：
A kind of multichannel geomagnetism detector based on magnetic force chromatographic technique, including nonmetallic mechanically moving platform and thereon
The detection system of installation；The detection system includes：
Three-dimensional magnetic probe, the three-dimensional magnetic probe are used to gather X, Y of the generation of metallic conduit surface and Z-direction three-dimensional magnetic field
Signal；
Data acquisition module, the data acquisition module are connected with three-dimensional magnetic probe, for by three-dimensional magnetic field strength signal
Digital signal is converted to by analog signal and is transmitted to one-chip computer module；
Meter step encoder and pedometer module, the meter step encoder are connected with pedometer module, are used to implement to non-
The calculating of metal mechanically moving platform displacement distance；
GPS module, the GPS module is for positioning and transmission of location information data；
Power supply module, the power supply module are used to power to detection system；
One-chip computer module, the one-chip computer module connect respectively with data acquisition module, pedometer module and GPS module
It connects, for receiving three-dimensional magnetic field strength signal, nonmetallic mechanically moving platform moving distance data and location information number respectively
According to, and data are carried out with computing, processing and host computer pad processing display modules are sent the data to by communication serial port；
Host computer pad handles display module, and the host computer pad processing display modules come from microcontroller mould for receiving
The data of block, and carry out data and calculate storage and display.
Further, the nonmetallic mechanically moving platform includes idler wheel, probe bracket, display/panel bracket and flexible pushes away
Bar, wherein bottom installation idler wheel, the top mounting knob of the telescopic putter；Flexible push away is fixed in the middle part of the probe bracket
The lower part of bar and vertical with telescopic putter；The display/panel bracket is fixed on the top of telescopic putter.
Further, the meter step encoder is mounted on idler wheel, and the three-dimensional magnetic probe is three, is arranged in parallel respectively
In the both ends of probe bracket and centre, for gathering the axial magnetic field intensity letter of X, Y, Z tri- of three different positions of metallic conduit
Number.
Further, the data acquisition module selects ADS1248 high-precision integrated analog digit converters, can will gather
Differential analog signal be converted to single ended digital signals and be transmitted to one-chip computer module.
Further, the power supply module be LDO power supply modules, the 7V voltage conversions that lithium battery power supply can be supplied
It is used for stable 5V and 3.3V for system components.
Further, the one-chip computer module selects C8051 chips.
Further, the three-dimensional magnetic probe uses three-component high-precision giant magnetoresistance sensor.
Further, the GPS module（5）Using U-BLOX NEO-6M modules.
Further, the host computer pad processing display module uses the portable pad machines equipped with Windows systems.
The utility model is detected by the chromatography that Distribution of Magnetic Field carries out above oil-gas pipeline, finds out metallic conduit presence
Improper stress, and size the defects of to causing improper stress, position resolve, and find dangerous existing for pipeline
Factor determines the pipeline section position needed to be serviced, and predicts following a period of time it is possible that problem, needs are paid close attention to
Pipeline section etc., provide the grade evaluation of in-service oil-gas pipeline body construction integrality and safety in operation.Prevent paroxysmal damage
It is bad, it is a kind of new detection means of field of non destructive testing.
Description of the drawings
Fig. 1 is nonmetallic mechanically moving platform structure schematic diagram in the utility model；
Fig. 2 is the whole hardware architecture block diagram of detection system in the utility model；
Fig. 3 underlying system control flow charts；
Fig. 4 upper systems work block diagram；
In Fig. 1：1 is idler wheel, and 2 be meter step encoder, and 3,4,5 be high-precision three-dimensional magnetic probe, and 6 be probe bracket, and 7 be to stretch
Contracting push rod, 8 be display/panel bracket, and 9 be handle.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment combination attached drawing to this programme into traveling
The elaboration of one step.
Embodiment 1
A kind of multichannel geomagnetism detector based on magnetic force chromatographic technique, including nonmetallic mechanically moving platform and thereon
The detection system of installation.
Referring to Fig. 1, nonmetallic mechanically moving platform includes idler wheel 1, probe bracket 6, display/panel bracket 8 and telescopic putter
7, wherein bottom installation idler wheel 1, the top mounting knob 9 of telescopic putter 9；The middle part of probe bracket 6 is fixed on telescopic putter 7
Lower part and vertical with telescopic putter 7；Display/panel bracket 8 is fixed on the top of telescopic putter 7.Position machine pad is mounted on display screen branch
It is convenient for tester's Real Time Observation Magnetic Field on frame 8
Referring to Fig. 2, detection system include three-dimensional magnetic probe, data acquisition module, data acquisition module, meter step encoder with
And pedometer module, GPS module, LDO power supply modules, one-chip computer module and host computer pad handle display module, wherein three-dimensional
Magnetic probe is used to gather X, Y and Z-direction three-dimensional magnetic field strength signal of metallic conduit surface generation；Data acquisition module and three-dimensional
Magnetic probe connects, for three-dimensional magnetic field strength signal to be converted to digital signal by analog signal and is transmitted to one-chip computer module；
Meter step encoder is connected with pedometer module, is used to implement the calculating to nonmetallic mechanically moving platform displacement distance；GPS module
For positioning simultaneously transmission of location information data；LDO power supply modules are used to power to detection system；One-chip computer module respectively with data
Acquisition module, pedometer module and GPS module connection, for receiving three-dimensional magnetic field strength signal, nonmetallic moving machine respectively
Tool platform moving distance data and location information data, and data are carried out with computing, processing and by communication serial port by number
Display module is handled according to host computer pad is sent to；Host computer pad processing display modules come from one-chip computer module for receiving
Data, and carry out data and calculate storage and display.
Embodiment 2
Referring to Fig. 1-2, a kind of multichannel geomagnetism detector based on magnetic force chromatographic technique, on the basis of 1 structure of embodiment
On, further include following preferred embodiment：
Meter step encoder is mounted on idler wheel, is carried out pulse recording to turnning circle, is realized the calculating of distance.
Three-dimensional magnetic probe is three, the both ends and centre of probe bracket is arranged in parallel in respectively, for gathering metallic conduit
The magnetic field intensity signal of tri- axial direction of X, Y, Z of three different positions.Three-dimensional magnetic probe is selected using the huge magnetoelectricity of three-component high-precision
Hinder sensor（GMR）The sensor is to form Huygens's electric bridge with four giant magnetoresistances, and resistance value changes in the presence of having external magnetic field
Become, have the advantages that signal-to-noise ratio is high.It gathers on X, Y and Z-direction three-dimensional magnetic field basis of signals that stand under load ferromagnetic component surface generates,
It analyzed using vector synthesis, handle to obtain Magnetic Memory tangential component Hp (x) and normal component Hp (y) signals, and it is real
Apply the operations such as judgement and storage.
Data acquisition module selects ADS1248 high-precision integrated analog digit converters, which has used AFE(analog front end) technology,
Programmable gain amplifier is integrated with, adjustable digital wave filter and 3 nd order modulators etc. believe the difference analogue of magnetic probe acquisition
Number being converted to single-ended analog signal is transmitted to one-chip computer module.
LDO power supply modules select low pressure difference linear voltage regulator, have micro energy lose, and the higher power supply of extremely low own noise inhibits
Than the advantages that, 7V voltage conversions that lithium battery power supply is supplied are stable 5V and 3.3V for sensor and cpu uses.
GPS module uses U-BLOX NEO-6M modules, and compact is had excellent performance.Module can be carried out various by serial ports
Parameter setting, and EEPROM can be stored in, it is easy to use.Module carries SMA interfaces, can connect various active antennas, module
Compatible 3.3V/5V level, facilitates connection SCM system and transmission of location information data.
One-chip computer module selects C8051f120 chips to have multichannel I/O interface, can external 3 circuit-switched data acquisition module simultaneously
GPS information module counts step information module all the way all the way；With DSP instruction set, quick complicated data operation and place can be carried out
Then the data of processing are passed to host computer by reason by serial ports.
Host computer pad handles display module（8）Using the portable pad machines equipped with Windows systems, inside it is equipped with
Labview softwares, can design interface can realize signal acquisition, data preserve, signal is shown and processing function, and to collecting
X, Y, Z three-dimensional magnetic memory signal change over time the corresponding presentation of information such as magnetic field intensity, gradient of display, are directed to magnetic memory signal
It is easily disturbed by environmental magnetic field, using Vector modulation analytic approach, eliminates noise signal interference, retrieve Grad and with reference to GPS
With meter step information to realize that the full information of magnetic memory signal detects, sentence for surveying machinery equipment operating status and failure
It is disconnected.
Such as Fig. 2 as can be seen, this programme includes data acquisition module, one-chip computer module, meter step information module, GPS moulds
Block, LDO power supply modules and upper computer module.Data acquisition module senses three groups of horizontal distribution high-resolution three-dimensional magnetic fields
The weak magnetic signal of three axial directions of x, y, z for the metallic conduit different position that device collects is filtered amplification A/D conversions, then will
Data sending that treated is to SCM system.The location information collected is sent to one-chip computer module by GPS module in real time.Meter
Step information module sends the pulse signal that the encoder on idler wheel obtains to microcontroller processing.Last microcontroller is by institute
There is signal to send host computer to by serial ports, host computer carries out data and calculates storage display.
Upper system work block diagram as shown in Figure 4, data processing close magnetic field x-axis signal and magnetic field y-axis signal with vector
It analyzed into method, handle to obtain Magnetic Memory tangential component Hp (x) and normal component Hp (y) signals.Then it is real in display
Shi Jinhang Magnetic field strength curves are shown, digital filtering, gradient are handled, synthesis Lie groupoid, with tangential magnetic field component X peak values and method
To the zero crossing of magnetic-field component Y come accurate judgement stress concentration position, and stress is judged with Lie groupoid closed interval size
Intensity.
Using the multichannel geomagnetism detector based on magnetic force chromatographic technique of this programme development, the magnetic field above oil-gas pipeline
The chromatography detection that distribution carries out, finds out improper stress existing for metallic conduit, and the defects of to causing improper stress
Size, position are resolved, and insecurity existing for discovery pipeline determines the pipeline section position needed to be serviced, and predicts
Following a period of time is it is possible that pipeline section that problem, needs are paid close attention to etc., it is complete to provide in-service oil-gas pipeline body construction
Property and safety in operation grade evaluation.It prevents paroxysmal damage, is a kind of new detection means of field of non destructive testing.
In the above-described embodiments, embodiment 2 is that further optimization design has been done to embodiment 1, but the utility model
Above-mentioned embodiment is not limited to, in the knowledge possessed in those skilled in the art, this reality can also not departed from
With making a variety of changes on the premise of new objective, the content after variation still falls within the scope of protection of the utility model.
Claims (9)
1. a kind of multichannel geomagnetism detector based on magnetic force chromatographic technique, it is characterised in that：It is put down including nonmetallic mechanically moving
Platform and the detection system installed thereon；The detection system includes：
Three-dimensional magnetic probe, the three-dimensional magnetic probe are used to gather X, Y and Z-direction three-dimensional magnetic field intensity of metallic conduit surface generation
Signal；
Data acquisition module, the data acquisition module are connected with three-dimensional magnetic probe, for by three-dimensional magnetic field strength signal by mould
Intend signal to be converted to digital signal and be transmitted to one-chip computer module；
Meter step encoder and pedometer module, the meter step encoder are connected with pedometer module, are used to implement to nonmetallic
The calculating of mechanically moving platform displacement distance；
GPS module, the GPS module is for positioning and transmission of location information data；
Power supply module, the power supply module are used to power to detection system；
One-chip computer module, the one-chip computer module are connected respectively with data acquisition module, pedometer module and GPS module, are used
In reception three-dimensional magnetic field strength signal, nonmetallic mechanically moving platform moving distance data and location information data respectively, and
Data are carried out with computing, processing and host computer pad is sent the data to by communication serial port handling display module；
Host computer pad handles display module, and the host computer pad processing display modules come from one-chip computer module for receiving
Data, and carry out data and calculate storage and display.
2. the multichannel geomagnetism detector according to claim 1 based on magnetic force chromatographic technique, it is characterised in that：It is described non-
Metal mechanically moving platform includes idler wheel, probe bracket, display/panel bracket and telescopic putter, wherein the bottom of the telescopic putter
End installation idler wheel, top mounting knob；The lower part of telescopic putter is fixed in the middle part of the probe bracket and is hung down with telescopic putter
Directly；The display/panel bracket is fixed on the top of telescopic putter.
3. the multichannel geomagnetism detector according to claim 2 based on magnetic force chromatographic technique, it is characterised in that：The meter
Encoder is walked to be mounted on idler wheel, the three-dimensional magnetic probe is three, is arranged in parallel in the both ends and centre of probe bracket respectively,
For gathering the axial magnetic field intensity signal of X, Y, Z tri- of three different positions of metallic conduit.
4. the multichannel geomagnetism detector according to claim 1 based on magnetic force chromatographic technique, it is characterised in that：The number
ADS1248 high-precision integrated analog digit converters are selected according to acquisition module, the differential analog signal of acquisition can be converted to list
Digital data transmission is held to one-chip computer module.
5. the multichannel geomagnetism detector according to claim 1 based on magnetic force chromatographic technique, it is characterised in that：The confession
Electric module is LDO power supply modules, can the 7V voltage conversions that lithium battery power supply is supplied be supplied system for stable 5V and 3.3V
Each several part uses.
6. the multichannel geomagnetism detector according to claim 1 based on magnetic force chromatographic technique, it is characterised in that：The list
Piece machine module selects C8051 chips.
7. the multichannel geomagnetism detector according to claim 1 based on magnetic force chromatographic technique, it is characterised in that：Described three
It ties up magnetic probe and uses three-component high-precision giant magnetoresistance sensor.
8. the multichannel geomagnetism detector according to claim 1 based on magnetic force chromatographic technique, it is characterised in that：It is described
GPS module uses U-BLOX NEO-6M modules.
9. the multichannel geomagnetism detector according to claim 1 based on magnetic force chromatographic technique, it is characterised in that：On described
Position machine pad processing display modules use the portable pad machines equipped with Windows systems.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108986870A (en) * | 2018-05-31 | 2018-12-11 | 沈阳工业大学 | A kind of Magnetic Memory experimental provision of novel change external world magnetic propagation medium environment |
| CN110108788A (en) * | 2019-05-15 | 2019-08-09 | 上海市特种设备监督检验技术研究院 | Integration probe and detection method are detected in pipe leakage based on impulse eddy current |
| CN113008975A (en) * | 2021-02-18 | 2021-06-22 | 德安福(天津)汽车技术有限公司 | Be used for new energy automobile battery pipeline performance quick detection system |
-
2017
- 2017-11-20 CN CN201721552577.9U patent/CN207423884U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108986870A (en) * | 2018-05-31 | 2018-12-11 | 沈阳工业大学 | A kind of Magnetic Memory experimental provision of novel change external world magnetic propagation medium environment |
| CN108986870B (en) * | 2018-05-31 | 2021-04-27 | 沈阳工业大学 | Magnetic memory experimental device for changing external magnetic propagation medium environment |
| CN110108788A (en) * | 2019-05-15 | 2019-08-09 | 上海市特种设备监督检验技术研究院 | Integration probe and detection method are detected in pipe leakage based on impulse eddy current |
| CN110108788B (en) * | 2019-05-15 | 2023-04-07 | 上海市特种设备监督检验技术研究院 | Pipeline magnetic flux leakage internal detection integrated probe based on pulse eddy current and detection method |
| CN113008975A (en) * | 2021-02-18 | 2021-06-22 | 德安福(天津)汽车技术有限公司 | Be used for new energy automobile battery pipeline performance quick detection system |
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