CN109696468A - A kind of in-pipeline detector go-and-return test platform and test method - Google Patents
A kind of in-pipeline detector go-and-return test platform and test method Download PDFInfo
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- 238000005183 dynamical system Methods 0.000 claims abstract description 10
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Abstract
The invention belongs to test the field of test technology, a kind of in-pipeline detector go-and-return test platform and test method are disclosed, is designed to solve to lack dedicated Sea Floor Pipeline Surveying Techniques confirmatory experiment platform now.Submarine pipeline land experimental test platform of the present invention includes the pipeline and dynamical system that defective sample is preset on hollow tube wall, and the dynamical system includes traction automatic control device, working condition experimenting device, electrical power device and instrument control device.Inventive pipeline internal detector go-and-return test platform can test the operating condition under the conditions of the pure liquid of internal detector, pure gas, verify the handling capacity of internal detector, verify precision, the precision of positioning, the shapes and sizes of defect etc. that internal detector carries out defects detection, and the experiment that can carry out various parameters to domestic and international pipeline inspection technology and equipment authenticates, ensure the reliability and safety of technology, while also being provided safeguard for the independent research of pipeline inspection technology.
Description
Technical field
The invention belongs to test the field of test technology, in particular to a kind of in-pipeline detector go-and-return test is flat
Platform and test method.
Background technique
Submarine pipeline (in particular for conveying the pipeline of oil gas) working environment is severe, once excessive lack is generated on tube wall
Breakage that is sunken then being likely to result in pipeline, leakage, consequence are serious.In order to avoid the generation of this case, need periodically irregularly
Ground detects pipeline, to find defect as soon as possible, repair or replace defect tracking in time.
Common method for detecting pipeline is to place internal detector in the duct, and internal detector exists by the power of pumped (conveying) medium
It is run in pipeline, realizes the on-line checking to pipeline.Internal detector is designing, can't be directly used in pipeline after processing is completed
Detection, but need to test the reliability of instrument, it is also necessary to defects detection precision, positioning are carried out to Magnetic Flux Leakage Testing System
Precision, defect shape and size etc. carry out verification experimental verification.
Currently without the special submarine pipeline land experimental test platform that can be used for internal detector test, lead to interior detection
Device come into operation after stability, defects detection accuracy and positioning accuracy it is all not high enough；Also without special experimental method pair
Internal detector wearability performance evaluation, be easy to appear after causing internal detector to come into operation running experiment midway due to wearability not
The case where enough breaking down.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of in-pipeline detector go-and-return test platform and test sides
Method can test operating condition of internal detector under the conditions of different medium, and detection internal detector wearability performance, guarantee
The test result of internal detector more true and accurate.
The present invention is achieved by technical solution below:
A kind of in-pipeline detector go-and-return test platform, including preset on hollow tube wall defective sample pipeline and
Dynamical system, the dynamical system include traction automatic control device, working condition experimenting device, electrical power device and instrument control dress
It sets；The traction automatic control device provides tractive force for internal detector；The working condition experimenting device is filled in the pipeline
Liquid or gas test submarine pipeline working condition；The electrical power device is device power supply in platform；The instrument control device
The multiple work on the spot instruments connecting including controller and respectively with the controller, the work on the spot instrument is for detecting institute
State the performance parameter of each device in test platform.
Further, the pipeline includes fixing pipe and replacement pipe；The defect sample is arranged at the replacement pipe
Tube wall on.
Further, the pipeline outer application has erosion resistant coating.
Further, the traction automatic control device includes hoist engine.
Further, the work on the spot instrument includes the pressure gauge being arranged on the working condition experimenting device and safety
Valve and the regulating valve being arranged on the pipeline and logical ball indicator.
Further, the working condition experimenting device is pure liquid working condition experimenting device and/or pure gas working condition experimenting device；
The pure liquid working condition experimenting device includes booster pump, first service cylinder, the first ball collecting chamber and buffered water tank；Wherein,
The first service cylinder and the first ball collecting chamber are connected to the both ends of the pipeline；The booster pump setting is in first hair
The outer end of first ball collecting chamber is arranged in the outer end of ball cylinder, the buffering water pot.
The pure gas working condition experimenting device include air compressor, second service cylinder, the second ball collecting chamber, air cushion tank and
Cooling water pump；Wherein, the second service cylinder and the second ball collecting chamber are connected to the both ends of the pipeline；The air compression
The outer end of the second service cylinder is arranged in machine, and the air cushion tank is arranged in the air compressor and the second service
Between cylinder.
Further, the exit of the air cushion tank is provided with flow control valve.
A kind of test method using above-mentioned in-pipeline detector go-and-return test platform is used when testing pure liquid operating condition
As test medium, water enters after being pressurized by the booster pump through the first service cylinder threads a pipe water described in the pipeline, stream,
The booster pump is returned to after the buffering of first ball collecting chamber and the buffering water pot in the pipe end, for following
Ring utilizes；
When testing pure gas operating condition, use air as test medium, air by after the compressor boost by the sky
Gas surge tank buffering, the air after being buffered enters the pipeline, the circulation pipeline by the second service cylinder, described
Pipe end is discharged into designated position after being depressured.
Further, when testing pure gas operating condition, air is prestored in the air cushion tank before on-test.
Further, first to the quality of internal detector, material density, Media density, detection when different experiments operating condition
The parameters such as the elbow quantity of device valve number and the pipeline are detected and are recorded；It secondly is interior inspection using traction automatic control device
It surveys device and tractive force is provided, internal detector is allowed to run in the experimental channel in experiment internal detector go-and-return test platform；Every experiment
Current internal detector weight and runing time are recorded after primary, internal detector weight change until counting on current experiment and total
Runing time obtains internal detector wearability performance evaluation formula by fitting:
Wherein, coefficient of friction of the μ between internal detector and the pipe wall, constant；△ m is until current experiment
Internal detector weight change, kg；ρIt is situated betweenFor the density under different operating conditions, kg/m3；NbFor the valve number of internal detector, constant； NwFor
The elbow quantity of the pipeline, constant；ρIt is interiorFor internal detector own material density, kg/m3；L is the length of the pipeline, m；t
For runing time, s；
When using pure liquid working condition experimenting, ρIt is situated between=ρLiquid；When using pure gas working condition experimenting, ρIt is situated between=ρGas。
The beneficial effects of the present invention are:
A kind of in-pipeline detector go-and-return test platform provided by the invention, dynamical system draw internal detector in pipeline
Interior movement can test the operating condition under the conditions of the different medium (pure liquid, pure gas) of internal detector, verify the logical of internal detector
Cross ability, verifying internal detector carries out precision, the precision of positioning, the shapes and sizes of defect etc. of defects detection, and can be with
Test the stationkeeping ability of internal detector in the seawater；To reduce the probability to break down when test at sea.In addition, passing through
Replacing different replacement pipes can choose different defects for testing, and meet the use demand of various internal detectors.
A kind of in-pipeline detector go-and-return test method provided by the invention includes testing pure liquid operating condition and the pure gas work of experiment
Condition changes the working environment in pipeline by changing test medium, enables the test result more true and accurate of internal detector.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of in-pipeline detector go-and-return test platform provided by the preferred embodiment of the present invention one；
Fig. 2 is the metal loss defects classification chart that the preferred embodiment of the present invention one provides.
In above-mentioned figure: 1, defect sample；2, pipeline；3, automatic control device is drawn.
Specific embodiment
For that can further appreciate that summary of the invention of the invention, feature and effect, the following examples are hereby given, and cooperates attached drawing
Detailed description are as follows:
Preferred embodiment one:
As shown in Figure 1, this preferred embodiment provides a kind of in-pipeline detector go-and-return test platform, the test platform packet
pre-set defective samples on the hollow tube wall1pipe2and power system,pipe2the outer side of the pipe wall is coated with an anti-corrosion layer.
Dynamical system includes traction automatic control device 3, working condition experimenting device, electrical power device and instrument control device.
Wherein, traction automatic control device 3 is used to provide tractive force for internal detector, it is preferred that traction automatically controls dress
Setting 3 includes hoist engine, and hoist engine draws internal detector offer.Working condition experimenting device is for being filled with liquid in pipeline 2
Or gas, test the working environment in submarine pipeline.Electrical power device is the device power supply in test platform.Instrument control device packet
Controller, respectively multiple work on the spot instruments connected to the controller are included, work on the spot instrument is each in test platform for detecting
The performance parameter of device.
Specifically, working condition experimenting device is pure liquid working condition experimenting device and/or pure gas working condition experimenting device.Pure liquid operating condition is real
Experiment device includes booster pump, first service cylinder, the first ball collecting chamber and buffered water tank；Wherein, first service cylinder and the first ball collecting chamber
It is connected to the both ends of pipeline 2；The outer end of first service cylinder is arranged in booster pump, and the first ball collecting chamber is arranged in buffering water pot
Outer end.Pure gas working condition experimenting device includes air compressor, second service cylinder, the second ball collecting chamber, air cushion tank and cooling water
Pump；Wherein, second service cylinder and the second ball collecting chamber are connected to the both ends of pipeline 2；Air compressor is arranged in second service
The outer end of cylinder, air cushion tank are arranged between air compressor and second service cylinder；It is arranged in the exit of air cushion tank
There is flow control valve.
Pipeline 2 includes fixing pipe and replacement pipe, and defect sample 1 is arranged on the tube wall of replacement pipe or is arranged in simultaneously fixation
On the tube wall of pipe and replacement pipe.It, can be scarce to change by replacement replacement pipe to be detachably connected between fixing pipe and replacement pipe
The type of sample 1 is fallen into, to adapt to the testing requirement of different internal detectors.
Work on the spot instrument includes the pressure gauge and safety valve, setting that booster pump and air compressor import and export is arranged in
Pressure gauge and safety valve, setting on first service cylinder, the first ball collecting chamber, second service cylinder and the second ball collecting chamber is in pipeline 2
On regulating valve and logical ball indicator.
Defect sample 1 mainly includes three kinds: recess class control defect, protrusion class control defect and random defect.So-called control
Defect processed refers to the flaw manually produced, these flaws are the characteristics by studying practical defect of pipeline, finding out these defects
And obtained from carrying out classification summary, those actual defects can be represented.Controlling defect is engineer and makes, because
This their size and parameter be all it is known, this be the defects detection accuracy rate for judging internal detector, positioning accuracy, to lack
Whether the testing result for falling into shapes and sizes correctly provides reference frame.
During designing and making control defect be possible to that the defect of some unknown parameters can be generated, i.e., it is random to lack
It falls into.These defect relation control defects are more complicated, but closer to true defect of pipeline, can achieve to internal detector
The purpose that detection effect is further tested.
Recess class control defect includes geometry abnormal (recess, ovalizing deflection, displacement etc.), metal loss (draw by burn into
Wound etc.), crackle (fatigue crack, stress corrosion cracking etc.).Protruding class control defect includes weld seam and solder joint etc..
Processing criterion: 1. drawbacks of the standard processing criterion: to prevent over-heating from tube wall characteristic being caused to change, defect
Processing is using cold working.
(1) defect length error L is ± 1mm；
(2) defect length error W be ± 1mm, width measurement be outer surface of tube wall cambered surface chord length；
(3) depth of defect error is ± 0.3mm；
(4) lead angle is not added in Defect Edge, and edge should be vertical with 2 surface of pipeline, and marginal error is ± 0.2mm；
(5) blemish surface should have the radian as 2 surface of pipeline, if completing curved face processing, pipeline 2 using milling cutter
Each corner should be less than 5 degree.
2. non-standard defect processing criterion: mainly include 3 classes: it is spheroid-like, the second class that the first kind, which takes non-standard defect,
Non-standard defect deepest point deviates to a direction, third class non-standard defect tool there are two and more than two deepest points.
Note: axial maximum extended length is equal to the length of table defect, and circumferential maximum extension length is equal to the width of defect.
Fig. 2 is the metal loss defects classification chart obtained according to the size (length, width and height) of defect.Geometric parameter A in figure is pressed
Value is carried out according to following manner: A=10mm, the A=t as t>=10mm as t<10mm, wherein t is wall thickness.
How many defect, the type of manufactured defect, the size and number and defect of manufactured defect are made on tube wall
Setting position etc. it is all unlimited, depending on use demand.
This preferred embodiment additionally provides the test method based on above-mentioned in-pipeline detector go-and-return test platform:
When testing pure liquid operating condition, use water as test medium, water enters after being pressurized by booster pump through first service cylinder
Pipeline 2, circulation duct 2 return to booster pump after 2 the first ball collecting chamber of end of pipeline, and the buffering of buffering water pot, for
It recycles；
When testing pure gas operating condition, use air as test medium, air by after compressor boost by air cushion tank
Buffering, the air after being buffered enter pipeline 2, circulation duct 2 by second service cylinder, are discharged into after being depressured in 2 end of pipeline
Designated position.In view of economy, compressor (discharge capacity 3600Sm3/h)+air cushion tank form of low discharge capacity is used, i.e.,
A certain amount of air is prestored in air cushion tank before on-test, then carries out logical ball detection operation again.
Preferred embodiment two:
This preferred embodiment provides a kind of in-pipeline detector go-and-return test platform, and structure and preferred embodiment one are basic
It is identical.Test platform includes the pipeline 2 and dynamical system that defective sample 1 is preset on hollow tube wall；Dynamical system includes leading
Draw automatic control device 3, working condition experimenting device, electrical power device and instrument control device.Wherein, traction automatic control device 3 is used
In providing tractive force for internal detector, it is preferred that traction automatic control device 3 includes hoist engine, and hoist engine mentions internal detector
For being drawn.Working condition experimenting device tests the working environment in submarine pipeline for being filled with liquid or gas in pipeline 2.
Electrical power device is the device power supply in test platform.Instrument control device include controller, respectively it is connected to the controller multiple
Work on the spot instrument, work on the spot instrument are used to detect the performance parameter of each device in test platform.
The difference is that: pipeline 2 is one whole section of straight tube, and various required defect samples 1 are all disposed on tube wall, is applicable in
In the test of various internal detectors；The specific structure of pure liquid working condition experimenting device and/or pure gas working condition experimenting device is unlimited, can
Test submarine pipeline (especially oil-gas pipeline) working condition；Traction automatic control device is not limited to include hoist engine, energy
Enough the device of tractive force is provided for internal detector.
Work on the spot instrument is not limited to setting in booster pump inlet and outlet, air compressor inlet and outlet and receiving ball tube
On pressure gauge and safety valve, the regulating valve that is arranged on pipeline and logical ball indicator, can also include that others can detect
The instrument and meter of work on the spot Instrument working state.
When using pure liquid working condition experimenting, test method and preferred reality based on above-mentioned submarine pipeline land experimental test platform
It is identical to apply example one.
When using pure gas working condition experimenting, air is buffered after compressor boost by air cushion tank, the air after being buffered
Enter pipeline, circulation duct by second service cylinder, is discharged into designated position after being depressured in pipe end.The difference is that
Before on-test air will not be prestored in air cushion tank.
Preferred embodiment three:
This preferred embodiment provides a kind of minimum test number (TN) of utilization on in-pipeline detector go-and-return test platform and tests
The test method of internal detector wearability is obtained, structure and preferred embodiment one are essentially identical.
First manually to the quality of internal detector, material density, Media density, detector valve number when different experiments operating condition
It is detected and is recorded with parameters such as the elbow quantity of pipeline 2；Secondly it is provided using traction automatic control device 3 for internal detector
Tractive force allows internal detector to run in the experimental channel in experiment internal detector go-and-return test platform.Postscript of every experiment
Current internal detector weight and runing time are recorded, when counting on the internal detector weight change and total operation until current experiment
Between, statistical result is put into table 1, internal detector wearability performance evaluation formula is obtained by fitting.
Table 1
Parameter information: coefficient of friction (constant) of the μ between 2 tube wall of internal detector and pipeline, △ m are to be to current experiment
Internal detector weight change (kg) only, ρIt is situated betweenFor the density (kg/m under different operating conditions3), NbFor the valve number (constant) of internal detector,
NwFor the elbow quantity (constant) of pipeline 2, ρIt is interiorFor internal detector own material density (kg/m3), L is the length (m) of pipeline 2, t
For runing time (s).
When using pure liquid working condition experimenting, ρIt is situated between=ρLiquid；
Wearability formula are as follows:
When using pure gas working condition experimenting, ρIt is situated between=ρGas；
Wearability formula are as follows:
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of specific transformation, within these are all belonged to the scope of protection of the present invention.
Claims (10)
1. a kind of in-pipeline detector go-and-return test platform, which is characterized in that including presetting defective sample on hollow tube wall
The pipeline and dynamical system of product, the dynamical system include traction automatic control device, working condition experimenting device, electrical power device
With instrument control device；The traction automatic control device provides tractive force for internal detector；The working condition experimenting device is in the pipe
It is filled with liquid or gas in road, tests submarine pipeline working condition；The electrical power device is device power supply in platform；It is described
Instrument control device includes controller and multiple work on the spot instruments for connecting respectively with the controller, and the work on the spot instrument is used
In the performance parameter for detecting each device in the test platform.
2. a kind of in-pipeline detector go-and-return test platform according to claim 1, which is characterized in that the pipeline includes
Fixing pipe and replacement pipe；The defect sample is arranged on the tube wall of the replacement pipe.
3. a kind of in-pipeline detector go-and-return test platform according to claim 1, which is characterized in that on the outside of the pipeline
Coated with erosion resistant coating.
4. a kind of in-pipeline detector go-and-return test platform according to claim 1, which is characterized in that the traction is automatic
Control device includes hoist engine.
5. a kind of in-pipeline detector go-and-return test platform according to claim 1, which is characterized in that the work on the spot
Instrument includes the pressure gauge being arranged on the working condition experimenting device and safety valve and the regulating valve being arranged on the pipeline
With logical ball indicator.
6. a kind of in-pipeline detector go-and-return test platform according to claim 1, which is characterized in that the working condition experimenting
Device is pure liquid working condition experimenting device and/or pure gas working condition experimenting device；
The pure liquid working condition experimenting device includes booster pump, first service cylinder, the first ball collecting chamber and buffered water tank；Wherein, described
First service cylinder and the first ball collecting chamber are connected to the both ends of the pipeline；The booster pump is arranged in the first service cylinder
Outer end, the outer end of first ball collecting chamber is arranged in the buffering water pot.
The pure gas working condition experimenting device includes air compressor, second service cylinder, the second ball collecting chamber, air cushion tank and cooling
Water pump；Wherein, the second service cylinder and the second ball collecting chamber are connected to the both ends of the pipeline；The air compressor is set
Set in the outer end of the second service cylinder, the air cushion tank setting the air compressor and the second service cylinder it
Between.
7. a kind of in-pipeline detector go-and-return test platform according to claim 6, which is characterized in that the air cushion
The exit of tank is provided with flow control valve.
8. a kind of test method using in-pipeline detector go-and-return test platform described in any one of claim 6-7, special
Sign is, when testing pure liquid operating condition, uses water as test medium, water be pressurized by the booster pump after through the first service
Cylinder enters the pipeline, threads a pipe described in stream, in the pipe end through first ball collecting chamber and the buffering water pot
The booster pump is returned to after buffering, for recycling；
When testing pure gas operating condition, test medium is used air as, air is delayed after the compressor boost by the air
Tank buffering is rushed, the air after being buffered enters the pipeline, the circulation pipeline by the second service cylinder, in the pipeline
End is discharged into designated position after being depressured.
9. a kind of test method using the in-pipeline detector go-and-return test platform according to claim 8, special
Sign is, when testing pure gas operating condition, prestores air in the air cushion tank before on-test.
10. a kind of test method using the in-pipeline detector go-and-return test platform according to claim 8, special
Sign is, first to the quality of internal detector, material density, and Media density, detector valve number and institute when different experiments operating condition
The parameters such as the elbow quantity of pipeline are stated to be detected and recorded；Secondly it is provided and is led for internal detector using traction automatic control device
Gravitation allows internal detector to run in the experimental channel in experiment internal detector go-and-return test platform；Record after every experiment is primary
Current internal detector weight and runing time count on internal detector weight change and total run time until current experiment,
Internal detector wearability performance evaluation formula is obtained by fitting:
Wherein, coefficient of friction of the μ between internal detector and the pipe wall, constant；△ m be until current experiment in
Detector weight change, kg；ρIt is situated betweenFor the density under different operating conditions, kg/m3；NbFor the valve number of internal detector, constant；NwIt is described
The elbow quantity of pipeline, constant；ρIt is interiorFor internal detector own material density, kg/m3；L is the length of the pipeline, m；T is fortune
Row time, s；
When using pure liquid working condition experimenting, ρIt is situated between=ρLiquid；When using pure gas working condition experimenting, ρIt is situated between=ρGas。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110131523A (en) * | 2019-06-11 | 2019-08-16 | 智云安科技(北京)有限公司 | A kind of in-pipeline detector straight line distraction test device and distraction test method |
| CN110131524A (en) * | 2019-06-11 | 2019-08-16 | 智云安科技(北京)有限公司 | A kind of in-pipeline detector circulating draw experimental rig and distraction test method |
| CN111157046A (en) * | 2020-01-07 | 2020-05-15 | 东北大学 | Testing device of seabed oil and gas pipeline detection equipment |
| CN111237585A (en) * | 2020-01-07 | 2020-06-05 | 东北大学 | Testing device of seabed oil and gas pipeline detection equipment with speed regulation function |
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| CN111157046A (en) * | 2020-01-07 | 2020-05-15 | 东北大学 | Testing device of seabed oil and gas pipeline detection equipment |
| CN111237585A (en) * | 2020-01-07 | 2020-06-05 | 东北大学 | Testing device of seabed oil and gas pipeline detection equipment with speed regulation function |
| CN111237585B (en) * | 2020-01-07 | 2021-03-26 | 东北大学 | Testing device of seabed oil and gas pipeline detection equipment with speed regulation function |
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