CN209264625U - A kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique - Google Patents
A kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique Download PDFInfo
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- CN209264625U CN209264625U CN201822089715.5U CN201822089715U CN209264625U CN 209264625 U CN209264625 U CN 209264625U CN 201822089715 U CN201822089715 U CN 201822089715U CN 209264625 U CN209264625 U CN 209264625U
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Abstract
The utility model discloses a kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique, including weak magnetic sensor array, signal picker, computer data acquiring processing system and detecting tool, the weak magnetic sensor array passes through transmission cable connection signal collector, the signal picker connects computer data acquiring processing system by data line, the detecting tool includes the slide plate and slide assemblies for carrying weak magnetic sensor array, and the slide plate can slide on the slide assemblies.The utility model uses modularized design, and computer operation is small in size, light-weight, and scene is easy to carry, easy to operate, easy to implement.
Description
Technical field
The utility model belongs to pipeline non-destructive testing technical field, and in particular to a kind of based on the buried of weak magnetic detection technique
Metallic conduit Indirect testing device.
Background technique
It is generally excavated using interior detection or sampling for the detection of buried metal pipeline body defects and is directly detected at present.Pipe
Detection generallys use Magnetic Flux Leakage Inspecting technology in road, by equipped with non-destructive detecting device and data sampling and processing and storage system
Intelligent pig is run in the duct, is completed the scanning step by step to tube body, is reached to defect size, the testing goal of position.Pipe
The implementation detected in road has strict requirements to transmitting-receiving detector means, caliber, discharge pressure, lateral, radius of curvature,
So detection range is limited, and the risk with " card ball ", testing cost is expensive, and there is still a need for excavate to verify for testing result.
It is that a kind of pair of erosion resistant coating damage location carries out excavating direct detection according to a certain percentage that directly detection is excavated in sampling, right
Excavate point removal erosion resistant coating or insulating layer after, using the technologies such as visual, supersonic testing method, ray detection method, electromagnetic detection method into
Row detection.Obviously this is a kind of destructive detection, and the representativeness of detection data, the reliability of assessment result are excavated by sampling
The influence of points and its distribution, missing inspection possibility are larger.
Utility model content
The utility model provides a kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique, can both solve
Certainly interior detection method requires height to pipeline laying condition, there are problems that " card ball " risk, and overcomes sampling and excavate directly detection
Person ignorant of the law's mesh excavates, the risk of missing inspection, realizes the quick online detection to buried metal pipeline.
A kind of the technical solution adopted in the utility model are as follows: buried metal pipeline no-dig technique inspection based on weak magnetic detection technique
Device, including weak magnetic sensor array, signal picker, computer data acquiring processing system and detecting tool are surveyed, it is described weak
Magnetic sensor array connects computer data by data line by transmission cable connection signal collector, the signal picker
Acquisition processing system, the detecting tool include the slide plate and slide assemblies for carrying weak magnetic sensor array, the cunning
Plate can slide on the slide assemblies.
Further, the slide assemblies include sliding rail and bracket, and the sliding rail is installed on the bracket.
Further, the sliding rail is cylindrical metal pipe fitting, and the slide plate is equipped with idler wheel, and the slide plate can be along institute
Sliding rail is stated to slide.
Further, the weak magnetic sensor array includes 5 three axis high-precision fluxgate vector sensors.
Further, the present apparatus further includes odograph, and the odograph is mobile for recording weak magnetic sensor
Mileage.
The utility model proposes the buried metal pipeline Indirect testing device based on weak magnetic detection technique, pass through weak magnetic
Sensor array measures the variation of the magnetic field strength and attenuation of buried pipeline, is deposited using computer data acquiring processing system
Storage, analysis detecting data, to obtain the relevant information of defect of pipeline, such as position, size.The weak magnetic array of the utility model
Sensor, to magnetic field possessed by pipeline inside after the magnetization of pipeline itself, is not necessarily to active excitation, is not necessarily to for natural earth's magnetic field
Excavate, without pre-processing to pipeline to be checked, improve detection efficiency and defect detection rate, reduce defect missed detection risk and
Testing cost can be widely applied to the metallic conduit non-destructive testing of the industrial circles such as petroleum, petrochemical industry.The utility model uses module
Change design, computer operation is small in size, and light-weight, scene is easy to carry, and it is easy to operate, it is easy to implement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Appended drawing reference: 1- weak magnetic sensor array, 2- signal picker, 3- computer data acquiring processing system,
4- slide plate, 5- sliding rail, 6- bracket, 7- transmission cable, 8- data line, 9- idler wheel.
Specific embodiment
Referring to Fig.1, a kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique, including weak magnetic array
Sensor 1, signal picker 2, computer data acquiring processing system 3 and detecting tool, the weak magnetic sensor array 1 pass through
7 connection signal collector 2 of transmission cable, the signal picker 2 connect computer data acquiring processing system by data line 8
3, the detecting tool includes the slide plate 4 and slide assemblies for carrying weak magnetic sensor array 1, and the slide plate 4 can be in institute
It states and is slided on slide assemblies.
Preferably, the slide assemblies include sliding rail 5 and bracket 6, and the sliding rail 5 is installed on the bracket 6, the bracket
6 use dismountable connection structure, and assembly and disassembly is conveniently applicable to field detection.
Preferably, the sliding rail 5 is cylindrical metal pipe fitting, and the slide plate 4 is equipped with idler wheel 9, and the slide plate 4 can be along
The sliding rail 5 slides.Cylindrical sliding rail 5 can effectively avoid weak magnetic sensor array 1 from generating when carry mobile by slide plate 4
Shake the influence to detection sensitivity.
Preferably, the weak magnetic sensor array 1 includes 5 three axis high-precision fluxgate vector sensors, it can be achieved that magnetic
Field gradient measurement.
Preferably, the present apparatus further includes odograph, and the odograph is for recording the shifting of weak magnetic sensor array 1
Dynamic mileage, the mileage recorded by odograph is combined with the variation of weak magnetic signal more accurately judges the specific position of pipeline
It sets.
Using the present apparatus to buried metal pipeline carry out defects detection the following steps are included:
Step 1: data collection obtains duct size information.Collect and survey design, installation, operation, maintenance and the inspection of pipeline to be checked
It the data such as tests, obtains pipeline name, specification, wall thickness and the information there may be defect, such as position, size.
Step 2: land clearing marks route.The barrier of tested pipeline earth surface effects testing result should be cleared up before detection
With the foreign matter of Interference Detection.Pipeline path and buried depth are detected using LD-PCM type pipe locator, and marks pipeline road using tape measure
Diameter, and the position of tape measure is overlapped with conduit axis as far as possible.Utilize GPS positioning system or temporary marker stake record detection starting
Point, end point and intersecting point, and start from scratch mark the number of temporary marker stake in order, finally close pipe locator power supply.
Step 3: commissioning device.Weak magnetic sensor array 1 is connect by transmission cable 7 with signal picker 2, signal is adopted
Storage 2 is connect by data line 8 with computer data acquiring processing system 3, opening signal collector 2 and computer data acquiring
The power supply of processing system 3 runs computer data acquiring processing system 3, carries out system functionality inspection and debugging, and comparing
The enterprising line sensitivity of sample pipe and stability calibration.
Step 4: detection pipeline.When examinations, operator's first first runs computer data acquiring processing system 3, operation
Weak magnetic sensor array 1 is installed on slide plate 4 by member's second；Operator's first provides " beginning " instruction, while click data acquisition is soft
START button on part interface, operator's second at the uniform velocity pushes forward slide plate 4, and guarantees that weak magnetic sensor array 1 is constantly in
Right above tested conduit axis, maximum Scanning speed is not more than 3m/min, and system, which automatically records, saves collected detection data；
At the end of detection, operator's second provides " stopping " instruction, while " stopping " on operator's first click data acquisition software interface
Button stops data acquisition.
Step 5: data processing, marking of defects position.By scanning to initial data by data processing system at
Reason, obtains the specifying information of defect, existing using GPS positioning system or temporary marker stake such as defective locations, Defect Equivalent size
The ground location of field flag defect.
Step 6: evaluation and processing.The defective locations of label are directly excavated, erosion resistant coating are removed, using ultrasound
Detection method, ray detection method or electromagnetic detection method further assess the information such as defect type, area, depth, fill in original record
And film recording, finally carry out assessment of remaining strength.
The foregoing is merely specific embodiment of the present utility model, it is not used to limit the protection of the utility model
Range, for the utility model person of an ordinary skill in the technical field, before not departing from the utility model design
It puts, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the protection scope of the utility model.
Claims (5)
1. a kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique, it is characterised in that: including weak magnetic battle array
Sensor, signal picker, computer data acquiring processing system and detecting tool, the weak magnetic sensor array pass through biography
Defeated cable connection signal collector, the signal picker connects computer data acquiring processing system by data line, described
Detecting tool includes the slide plate and slide assemblies for carrying weak magnetic sensor array, and the slide plate can be in the slide assemblies
On slide.
2. the buried metal pipeline Indirect testing device according to claim 1 based on weak magnetic detection technique, feature
Be: the slide assemblies include sliding rail and bracket, and the sliding rail is installed on the bracket.
3. the buried metal pipeline Indirect testing device according to claim 2 based on weak magnetic detection technique, feature
Be: the sliding rail is cylindrical metal pipe fitting, and the slide plate is equipped with idler wheel, and the slide plate can be slided along the sliding rail.
4. the buried metal pipeline Indirect testing device according to claim 1 based on weak magnetic detection technique, feature
Be: the weak magnetic sensor array includes 5 three axis high-precision fluxgate vector sensors.
5. the buried metal pipeline Indirect testing dress according to any one of claims 1 to 4 based on weak magnetic detection technique
It sets, it is characterised in that: further include odograph, the odograph is for recording in the movement of weak magnetic sensor array
Journey.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822089715.5U CN209264625U (en) | 2018-12-12 | 2018-12-12 | A kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822089715.5U CN209264625U (en) | 2018-12-12 | 2018-12-12 | A kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646852A (en) * | 2019-08-29 | 2020-01-03 | 中国地质大学（武汉） | Low-power-consumption security inspection detection system and method based on MEMS weak magnetic sensor array |
| CN111722022A (en) * | 2020-05-09 | 2020-09-29 | 上海达铭科技有限公司 | Cable path detection method based on weak magnetic signal measurement |
| CN112230292A (en) * | 2020-11-05 | 2021-01-15 | 沈阳仪表科学研究院有限公司 | Intelligent patrol dog for detecting long-distance oil and gas buried pipeline |
-
2018
- 2018-12-12 CN CN201822089715.5U patent/CN209264625U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646852A (en) * | 2019-08-29 | 2020-01-03 | 中国地质大学（武汉） | Low-power-consumption security inspection detection system and method based on MEMS weak magnetic sensor array |
| CN110646852B (en) * | 2019-08-29 | 2021-07-20 | 中国地质大学（武汉） | Low-power-consumption security inspection detection system and method based on MEMS weak magnetic sensor array |
| CN111722022A (en) * | 2020-05-09 | 2020-09-29 | 上海达铭科技有限公司 | Cable path detection method based on weak magnetic signal measurement |
| CN111722022B (en) * | 2020-05-09 | 2023-02-14 | 上海达铭科技有限公司 | Cable path detection method based on weak magnetic signal measurement |
| CN112230292A (en) * | 2020-11-05 | 2021-01-15 | 沈阳仪表科学研究院有限公司 | Intelligent patrol dog for detecting long-distance oil and gas buried pipeline |
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