CN109100415A - The non-destructive testing device of pipe insulating layer can be penetrated - Google Patents
The non-destructive testing device of pipe insulating layer can be penetrated Download PDFInfo
- Publication number
- CN109100415A CN109100415A CN201811018123.2A CN201811018123A CN109100415A CN 109100415 A CN109100415 A CN 109100415A CN 201811018123 A CN201811018123 A CN 201811018123A CN 109100415 A CN109100415 A CN 109100415A
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- sensor
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- insulating layer
- collecting card
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
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- Chemical Kinetics & Catalysis (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The present invention provides the non-destructive testing devices that one kind can penetrate pipe insulating layer, comprising: multiple sensor boxes, the permanent magnet that the inside of each sensor box is provided with Hall sensor and is symmetrically fixed in sensor box front end and rear end；Travel wheel is provided with travel wheel outside outside the front end of each sensor box and rear end, and travel wheel is able to drive sensor box and advances；Total wire box is fixed on one of sensor box, and data collecting card and difference channel are provided in total wire box, and data collecting card is electrically connected with the Hall sensor in multiple sensor boxes, and difference channel is electrically connected with data collecting card.The beneficial effects of the invention are as follows, pipe under test is magnetized by permanent magnet, then pipeline flux change is picked up by Hall sensor, difference processing is carried out to signal eventually by difference channel, interference of the other factors to detection is reduced, completes defects detection under the premise of not destroying the integrality of insulating layer, erosion resistant coating and pipe under test to reach.
Description
Technical field
The present invention relates to pipeline flaw detection device fields, and in particular to one kind can penetrate the non-destructive testing dress of pipe insulating layer
It sets.
Background technique
Thermal isolation technique is widely used in petrochemical pipe transmission process as one of energy conservation measure.Natural gas line
Insulating layer has three-decker: erosion resistant coating, insulating layer and rain-proof outer layer.Erosion resistant coating is one layer of anticorrosive paint.Insulating layer is mainly
Nonconducting thermal insulation material, thus it is called heat insulation layer, the thermal loss of medium in pipe can be reduced, common used material has polyurethane, rock
Cotton, calcium silicates etc..Under open-air atmosphere, for the infiltration for preventing moisture, heat insulation layer is usually enclosed with the rain-proof of 0.2~1mm thickness outside
Outer layer can be divided into stainless steel sheet|, aluminium skin and three kinds of galvanized iron sheet by the difference of material.
Heat preservation layer material in pipeline includes mineral salt component more, loose porous and easily absorb water, when insulating layer pipe
When the outer layer metal protective layer in road ruptures, the natural mediums such as rainwater enter in heat preservation layer material and occur with metal pipe-wall
Oxidation and electrochemical reaction have resulted in the pipeline wall thickness outer wall corrosion under insulating layer for a long time.Steel pipe inner wall is also easy
Corrosion, corrosion mechanism is related with the medium type of inside carrying, is broadly divided into flowing accelerated corrosion (Flow Accelerated
Corrosion, FAC) and droplet impact erosion (Liquid Droplet Impingement Erosion, LDIE).FAC exists
In fluid and metal structure surface contact process, two processes can be divided into, one is corrosion (chemistry) process, i.e. metallic walls table
The oxidation film that face shields dissolves in high-velocity fluid, secondly be fluid dynamics (physics) process, and the former is to cause
The main reason of FAC.The leakage as caused by corrosive pipeline has often led to serious personal injury and property loss accident, gives
State and society causes heavy losses.Chinese corrosion and protection association, Chinese Petroleum Society (CPS) and Chemical Industry and Engineering Society of China joint investigation
Statistics indicate that, for all trades and professions, caused by corrosion loss account for about the 3% of gross national product, for petroleum and stone
It is especially serious to change industry, accounts for about the 6% of the output value.
Due to the buffer action of insulating layer, the pipe corrosion situation under insulating layer that detects is always one during pipeline management
A problem.Corrosion default is the one of the major reasons for influencing pipeline service life, but since the covering of insulating layer is isolated, traditional
Detection means requires first to remove coating, just can be carried out detection, not only greatly reduces the efficiency of detection in this way, but also increase
Testing cost.Show that the total kilometrage of national Land petroleum long distance pipeline at present has reached 120,000 kilometers according to latest data,
It is wherein more than that half has been run 15 years or more, some major hidden danger moment threaten pipeline transportation safety.And under insulating layer
Gathering line, due to the features such as its active time is long, distribution is wide, bad environments, detection difficult, this problem is then more prominent.
Summary of the invention
The present invention provides the non-destructive testing devices that one kind can penetrate pipe insulating layer, arrived the feelings for not removing insulating layer
The purpose detected a flaw under condition to pipeline.
The technical solution adopted by the present invention to solve the technical problems is: one kind can penetrate the non-destructive testing of pipe insulating layer
Device, comprising: multiple sensor boxes, the inside of each sensor box are provided with Hall sensor and are symmetrically fixed on sensor
Permanent magnet in box front end and rear end；Travel wheel is provided with travel wheel outside outside the front end of each sensor box and rear end, capable
Sensor box is able to drive into wheel to advance；Total wire box is fixed on one of sensor box, is provided with number in total wire box
According to capture card and difference channel, data collecting card is electrically connected with the Hall sensor in multiple sensor boxes, difference channel with
Data collecting card electrical connection.
Further, photoelectric sensing record component, photoelectric sensing record component and data collecting card are provided in travel wheel
Electrical connection.
Further, the battery component for power supply is provided in total wire box.
Further, battery component is battery, and the charging for charging to battery component is provided in total wire box
Interface.
Further, defective sensor interface is set in total wire box, and data collecting card and each Hall sensor are logical
Cross the connection of defect sensor interface.
Further, data transmission interface is provided in total wire box, data collecting card is by data transmission interface and calculates
Machine connection.
Further, handle is provided at the top of total wire box.
Further, it is connected by hinge between multiple sensor boxes.
The invention has the advantages that being magnetized by permanent magnet to pipe under test, then picked up by Hall sensor
Pipeline flux change is taken, difference processing is carried out to signal eventually by difference channel, reduces interference of the other factors to detection, from
And reach the defects detection that pipe under test is completed under the premise of not destroying the integrality of insulating layer, erosion resistant coating and pipe under test.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Appended drawing reference in figure: 10, total wire box；11, charging interface；12, defect sensor interface；13, data transmission interface；
14, range sensor interface；20, sensor box；30, travel wheel；40, handle；50, hinge.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the embodiment of the invention provides the non-destructive testing device that one kind can penetrate pipe insulating layer, including it is more
20, two travel wheels 30 of a sensor box and total wire box 10.The inside of each sensor box 20 be provided with Hall sensor and
The permanent magnet being symmetrically fixed in 20 front end of sensor box and rear end；It is all provided with outside the front end of each sensor box 20 and outside rear end
It is equipped with travel wheel 30, travel wheel 30 is able to drive the traveling of sensor box 20.Total wire box 10, is fixed at one of sensor
On box 20, it is provided with data collecting card and difference channel in total wire box 10, in data collecting card and multiple sensor boxes 20 suddenly
You are electrically connected sensor, and difference channel is electrically connected with data collecting card.
Pipe under test is magnetized by permanent magnet, pipeline flux change is then picked up by Hall sensor, finally
Difference processing is carried out to signal by difference channel, interference of the other factors to detection is reduced, is not destroying heat preservation to reach
The defects detection of pipe under test is completed under the premise of the integrality of layer, erosion resistant coating and pipe under test.
It should be noted that being connected between multiple sensor boxes 20 by hinge 50 in the embodiment of the present invention.Above-mentioned sensing
The quantity of device box 20 can be chosen according to the diameter of pipe under test, to maximize the area of covering pipe under test.The present invention
Embodiment is made of three groups of sensor boxes 20.
In the embodiment of the present invention, photoelectric sensing record component, photoelectric sensing record component and number are provided in travel wheel 30
It is electrically connected according to capture card.It is close to the surface of pipe under test when travel wheel 30 works, to cooperate photoelectric sensing record component to defect
Position is positioned.
Specifically, above-mentioned photoelectric sensing record component is able to record travel distance and the data is passed through cable transmission to number
According to capture card, wherein above-mentioned cable is connect by the range sensor interface 14 being arranged in total wire box 10 with data collecting card.
The battery component for power supply is provided in total wire box 10.Preferably, which is accumulator cell assembly, bus
The charging interface 11 for charging to battery component is provided on box 10.In the embodiment of the present invention, above-mentioned battery component is
The self-powered to sensor module may be implemented in intrinsic safety type power supply in the case where electric quantity of power supply abundance.When not enough power supply, need
The charging operations to power supply are carried out by charging interface 11.
In the embodiment of the present invention, the Hall sensor in above-mentioned each sensor box 20 is electrically connected with data collecting card,
And data collecting card is connect by cable with computer.I.e. multiple sensor boxes 20 arrive collected defect information uniform transmission
In data collecting card, and it is transferred in computer by data collecting card and displays data and analyze.
Specifically, as shown in Figure 1, defective sensor interface 12 is arranged in total wire box 10, data collecting card and it is each suddenly
You are connected sensor by defect sensor interface 12.
Further, data transmission interface 13 is provided in total wire box 10, data collecting card passes through data transmission interface 13
It is connect with computer.
The top of above-mentioned total wire box 10 is provided with handle 40, by handle 40, single unit system can be made more portable.
It is as follows using the specific work process of the embodiment of the present invention: be integrated in sensor box 20 multiple Hall sensors,
With non-contact velocity sensor.The defect that Hall sensor detects pipeline generates electric signal, and by the electric signal transmission to bus
Data acquisition, which is opened and handled by subsequent difference channel, in box 10 is converted into analog signal it.Then by the analog signal output
To 32 ARM single-chip microcontrollers in total wire box 10, chip microcontroller analog-to-digital conversion and signal processing, and useful signal is converted into
CAN bus signal is transmitted to computer.Non-contact velocity sensor (photoelectric sensing record component) completes to pick up the rolling of travel wheel 30
It moves signal and is converted to output of pulse signal and give ARM single-chip microcontroller, be used for targeted duct damage position.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
The present apparatus can detect the pipeline of package insulating layer, and can penetrate certain thickness galvanized iron sheet, and
And suitable sensor can be selected to hang quantity according to the needs of caliber.
The above, only specific embodiments of the present invention cannot limit the range that invention is implemented with it, so it is equivalent
The displacement of component, or according to equivalent variations made by the invention patent protection scope and modification, should all still fall within what this patent was covered
Scope.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical solution, technical solution with
Use can be freely combined between technical solution.
Claims (8)
1. the non-destructive testing device that one kind can penetrate pipe insulating layer characterized by comprising
Multiple sensor boxes (20), the inside of each sensor box (20) are provided with Hall sensor and are symmetrically fixed on sensing
Permanent magnet in device box (20) front end and rear end；
Travel wheel (30) is provided with travel wheel (30) outside outside the front end of each sensor box (20) and rear end, travel wheel (30)
It is able to drive sensor box (20) traveling；
Total wire box (10), is fixed on one of sensor box (20), is provided with data collecting card in total wire box (10)
And difference channel, the data collecting card are electrically connected with the Hall sensor in multiple sensor boxes (20), the difference
Parallel circuit is electrically connected with the data collecting card.
2. the non-destructive testing device according to claim 1 for penetrating pipe insulating layer, which is characterized in that the travel wheel
(30) photoelectric sensing record component is provided on, the photoelectric sensing record component is electrically connected with the data collecting card.
3. the non-destructive testing device according to claim 1 for penetrating pipe insulating layer, which is characterized in that total wire box (10)
In be provided with battery component for power supply.
4. the non-destructive testing device according to claim 3 for penetrating pipe insulating layer, which is characterized in that the battery pack
Part is battery, and the charging interface (11) for charging to the battery component is provided on total wire box (10).
5. the non-destructive testing device according to claim 1 for penetrating pipe insulating layer, which is characterized in that total wire box (10)
The upper defective sensor interface (12) of setting, the data collecting card and each Hall sensor pass through defect sensor
Interface (12) connection.
6. the non-destructive testing device according to claim 1 for penetrating pipe insulating layer, which is characterized in that total wire box (10)
On be provided with data transmission interface (13), the data collecting card is connect by data transmission interface (13) with computer.
7. the non-destructive testing device according to claim 1 for penetrating pipe insulating layer, which is characterized in that total wire box (10)
Top be provided with handle (40).
8. the non-destructive testing device according to claim 1 for penetrating pipe insulating layer, which is characterized in that multiple sensors
It is connected between box (20) by hinge (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811018123.2A CN109100415A (en) | 2018-09-03 | 2018-09-03 | The non-destructive testing device of pipe insulating layer can be penetrated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811018123.2A CN109100415A (en) | 2018-09-03 | 2018-09-03 | The non-destructive testing device of pipe insulating layer can be penetrated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109100415A true CN109100415A (en) | 2018-12-28 |
Family
ID=64864862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811018123.2A Pending CN109100415A (en) | 2018-09-03 | 2018-09-03 | The non-destructive testing device of pipe insulating layer can be penetrated |
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| CN (1) | CN109100415A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021096367A1 (en) * | 2019-11-11 | 2021-05-20 | Kaefer Energy As | An apparatus and a method for securing at least one measuring device to an object |
| CN113586963A (en) * | 2021-08-16 | 2021-11-02 | 中国石油化工股份有限公司 | Pipeline heat preservation automatic checkout device |
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| FR2350600A1 (en) * | 1976-05-06 | 1977-12-02 | Noranda Mines Ltd | MAGNETIC TESTING DEVICE TO DETECT FAULTS IN LONG OBJECTS |
| EP0732595A2 (en) * | 1995-03-16 | 1996-09-18 | Eastman Kodak Company | Magnetic field detector |
| US6371691B1 (en) * | 1995-11-13 | 2002-04-16 | Siemens Aktiengesellschaft | Method of introducing optical cable into a solid bed |
| CN1447918A (en) * | 2000-08-24 | 2003-10-08 | 国际壳牌研究有限公司 | Inspecting object of electrically conducting material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021096367A1 (en) * | 2019-11-11 | 2021-05-20 | Kaefer Energy As | An apparatus and a method for securing at least one measuring device to an object |
| AU2020384849B2 (en) * | 2019-11-11 | 2023-06-01 | Kaefer Blu AS | An apparatus and a method for securing at least one measuring device to an object |
| US11940296B2 (en) | 2019-11-11 | 2024-03-26 | Kaefer Blu AS | Apparatus and a method for securing at least one measuring device to an object |
| CN113586963A (en) * | 2021-08-16 | 2021-11-02 | 中国石油化工股份有限公司 | Pipeline heat preservation automatic checkout device |
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