CN107449625B - Consider the pipeline axial orientation racking test device of sea bed inclination angle and falling temperature gradient - Google Patents
Consider the pipeline axial orientation racking test device of sea bed inclination angle and falling temperature gradient Download PDFInfo
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- CN107449625B CN107449625B CN201710702297.XA CN201710702297A CN107449625B CN 107449625 B CN107449625 B CN 107449625B CN 201710702297 A CN201710702297 A CN 201710702297A CN 107449625 B CN107449625 B CN 107449625B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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Abstract
The invention discloses a kind of consideration sea bed inclination angle and the pipeline axial orientation racking test devices of falling temperature gradient, it is characterized by comprising test flume, oil transporting appliance, oil outlet pipe, oil return line, import acquisition device, outlet acquisition device, test petroleum pipeline, turning gear and hydraulic push rod devices, the device can simulate a variety of scenes for causing submarine pipeline that axial orientation displacement occurs: pipeline is during whole uniformly heating, cooling, due to the inclined effect of sea bed, so that axial orientation displacement occur；The oil product of fixed temperature is heated to during through pipeline inside, carries out energy exchange with pipeline, when along journey energy loss, pipeline generates axial orientation displacement.
Description
Technical field
The invention belongs to Yu Haiyang's oil transportation engineering field more particularly to a kind of pipeline axis for considering sea bed inclination angle and falling temperature gradient
To orientation racking test device.
Background technique
The axial orientation movement of pipeline is the new problem occurred in pipelines in deep sea engineering, and being common in cannot be complete by foundation soil body
In the pipeline of staff cultivation.Sea bed surface and opening and closing operation related frequency are placed in since pipelines in deep sea is naked, when pipeline is by seabed table
When the influence lost during the influence of plane inclination or temperature conduction, pipeline will result in along gradient one end or heating lag one
End moves integrally, and the axial orientation that this phenomenon is known as pipeline is mobile (pipeline walking).The reality of submarine pipeline
Measured data discloses, and every kilometer of submarine pipeline is in an opening-closing process, along axial amount of movement up to several tens cm, and entire
Its axial internal clearance of submarine pipeline service phase is up to several meters.Therefore, temperature and pressure synergy and reciprocating cause pipeline axially fixed
It is that pipelines in deep sea design has to consider the problems of to movement.However since routine test slot is not easy to tilt, oil transportation temperature is not easy
Monitoring, native surface evenness such as are difficult to control at the factors, currently, Global Academy and industry mainly use theory analysis and Numerical-Mode
Quasi- method studies pipeline axial orientation movement law, and experimental study field is substantially at space state, such case
It is unfavorable for the prediction of submarine pipeline axial movement, making the safety in production of seabed piping, there are certain hidden danger.
Summary of the invention
The present invention overcomes the disadvantages of the prior art, provides a kind of pipeline axis for considering sea bed inclination angle and falling temperature gradient
To orientation racking test device.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of pipeline axial orientation racking test device considering sea bed inclination angle and falling temperature gradient, including test flume, oil transportation
Equipment, oil outlet pipe, oil return line, import acquisition device, outlet acquisition device, test petroleum pipeline, turning gear and hydraulic thrust
Lever apparatus, test petroleum pipeline are set in test flume, are respectively arranged with import acquisition device at the both ends of test petroleum pipeline and are gone out
Mouth acquisition device, oil transporting appliance are connected by oil outlet pipe with import acquisition device, by oil return line and export acquisition device,
Turning gear and hydraulic push rod device are provided with below test flume；
The groove body bottom of test flume is equipped with tempered glass, is covered in groove body by upright supports, the two sides of groove body axial direction
Soil layer, pipeline road are placed on soil layer, and the both ends of groove body are provided with support frame, are respectively set on the support frame at both ends
Import acquisition device and outlet acquisition device, the import acquisition device and outlet acquisition device structure having the same, by
Sliding rail, sliding block, connector sleeve, pressure sensor, temperature sensor and laser displacement sensor are constituted, the both ends difference of pipeline road
It is connected with import acquisition device and the connector sleeve for exporting acquisition device；
The connection relationship of each component of import acquisition device are as follows: sliding rail is set on support frame, is provided on the slide rail
Sliding block, sliding block top are connected with connector sleeve, and the inside side of connector sleeve is connected with test petroleum pipeline, and the outside side of connector sleeve successively connects
Connect pressure sensor, temperature sensor and oil outlet pipe, the outlet acquisition device and import acquisition device knot having the same
Structure；
It is also equidistant on test petroleum pipeline other than being set to the temperature sensor of test petroleum pipeline inlet and outlet
Be provided with patch type temperature sensor, to measure pipeline during high temperature oil product passes through temperature along journey variation, in cunning
Laser displacement sensor is provided on rail, for measuring the displacement of sliding block on the slide rail during the experiment, the displacement be due to
Caused by the expansion for testing petroleum pipeline；
Oil transporting appliance includes upper layer fuel tank and lower layer's fuel tank, and lower layer's fuel tank connects oil outlet pipe, and upside fuel tank connects oil return
Pipeline, lower layer's fuel tank are used to collect the oil product after reflux, upper layer oil for test oil to be kept the temperature to and is passed through pipeline, upper layer fuel tank
Case is connected with lower layer fuel tank by connecting line, attemperator is provided in lower layer's fuel tank, for keeping test oil
Temperature is provided with proportioning valve in the exit of oil outlet pipe.
In the above-mentioned technical solutions, the length of the groove body is 9-9.5m, width 0.5-1m, is highly 0.5-1m.
In the above-mentioned technical solutions, groove body bottom parallel is furnished with two rows of columns, and quantity is 7-8 group, each group column
Between be spaced set.
In the above-mentioned technical solutions, the tempered glass is transparent, convenient for observation test soil thickness and pipeline fortune
The dynamic disturbance to the soil body.
In the above-mentioned technical solutions, in the proportioning valve for adjusting Extraction rate, make Extraction rate control 5mL/s extremely
1L/s。
In the above-mentioned technical solutions, the laser displacement sensor is adopted instrument by number and is connect with the end PC, measures real-time monitoring
Data.
In the above-mentioned technical solutions, the patch type temperature sensor is equidistant is set on pipeline road, and spacing is
0.8-1m。
In the above-mentioned technical solutions, the turning gear is made of the shaft of bottom fastening bracket and portion disposed thereon, is made
Entire test flume is overturn by fulcrum of shaft, and the angle of overturning is 0-8 degree.
In the above-mentioned technical solutions, the hydraulic push rod device includes hydraulic cylinder and sleeve.
In the above-mentioned technical solutions, the turning gear is set to oil return line side, and hydraulic push rod device is set to out
Oil pipe line side, the distance apart from import acquisition device are to test the 1/4-1/3 of slot length.
A kind of above-mentioned pipeline axial orientation racking test device for considering sea bed inclination angle and falling temperature gradient during the test,
It is carried out according to the following steps:
Oil pipe is connect with test pipe, opens attemperator, oil temperature is adjusted to test required temperature, then connection passes
Sensor, number adopt instrument and the end PC；After completing installment work, test flume one end is raised to desired height using hydraulic push rod device,
The big valve for opening heater box proportioning valve makes hot oil run through test pipe, and the oil for flowing out pipeline flows back into the fuel tank of upper layer,
When waiting until that pipe temperature is stablized, heater box valve is closed, so that the oil of pipeline and its inside is uniformly down to room temperature, in multiplicating
Step is stated, measures the axial displacement of pipeline and tube wall temperature, strain size in whole process, and then calculate every heating cooling
Circulating line axial orientation displacement.
When probing into pipeline and being generated axial displacement by the influence of temperature thermal gradient, it is not required to raise test flume, and
Opening low speed valve should be selected slow enough by the speed of pipeline with guarantee test oil when controlling heater box proportioning valve, it can be abundant
Heat exchange occurs with pipeline and ambient enviroment, enable the axial orientation of pipeline be displaced is influenced obviously by temperature effect.In addition to this, other
It operates consistent with the process that pipeline is generated axial displacement by the influence of seabed surface slope is probed into.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is directed to design a kind of pipeline axial orientation racking test device for being contemplated that sea bed inclination angle and falling temperature gradient,
The device can simulate a variety of scenes for causing submarine pipeline that axial orientation displacement occurs:
1, pipeline is during whole uniformly heating, cooling, due to the inclined effect of sea bed, so that axial orientation position occur
It moves；
2, the oil product of fixed temperature is heated to during through pipeline inside, energy exchange is carried out with pipeline, along journey
When energy loss, pipeline generates axial orientation displacement.
For above two scene, the present apparatus can change the size at sea bed inclination angle, measure pipe cooling gradient, thus
Relationship between submarine pipeline axial orientation displacement and inclination angle size and falling temperature gradient, prediction pipeline axial orientation displacement
Amount prevents pipeline axial displacement from the threeway/four-way connecting with pipeline or crossover piping being caused overstress, catenary riser funeral occur
Lose tension, the adverse effects such as stress is excessive at pipe level buckling.
Detailed description of the invention
Fig. 1 is overall structure of the present invention.
Fig. 2 is oil transporting appliance structural schematic diagram in the present invention.
Fig. 3 is import acquisition device structural schematic diagram in the present invention.
Fig. 4 is test flume in the present invention, turning gear and pressure push rod device attachment structure schematic diagram.
Wherein, 1 is oil transporting appliance, and 1-1 is upper layer fuel tank, and 1-2 is lower layer's fuel tank, and 1-3 is connecting line, 1-4 heat preservation dress
It sets, 1-5 is proportioning valve, and 2 be import acquisition device, and 2-1 is sliding rail, and 2-2 is sliding block, and 2-3 is connector sleeve, and 2-4 is pressure sensing
Device, 2-5 are temperature sensor, and 2-6 is laser displacement sensor, and 3 be test flume, and 3-1 is groove body, and 3-2 is support frame, and 3-3 is
Column, 4 be outlet acquisition device, and 5 be oil return line, and 6 be oil outlet pipe, and 7 be turning gear, and 8 be hydraulic push rod device.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
As described in attached drawing, a kind of pipeline axial orientation racking test device considering sea bed inclination angle and falling temperature gradient, including
Test flume 3, oil transporting appliance 1, oil outlet pipe 6, oil return line 5, import acquisition device 2, outlet acquisition device 4, test petroleum pipeline,
Turning gear 7 and hydraulic push rod device 8, test petroleum pipeline are set in test flume, are respectively set at the both ends of test petroleum pipeline
There are import acquisition device and outlet acquisition device, oil transporting appliance is connected by oil outlet pipe with import acquisition device, and oil return is passed through
Pipeline and outlet acquisition device, are provided with turning gear and hydraulic push rod device below test flume；
The bottom groove body 3-1 of test flume is supported by column 3-3, and the two sides of groove body axial direction are equipped with tempered glass, in groove body
It is inside covered with soil layer, pipeline road is placed on soil layer, the both ends of groove body is provided with support frame 3-2, the support frame at both ends
On be respectively set import acquisition device and outlet acquisition device, the import acquisition device and outlet acquisition device it is having the same
Structure is sensed by sliding rail 2-1, sliding block 2-2, connector sleeve 2-3, pressure sensor 2-4, temperature sensor 2-5 and laser displacement
Device 2-6 is constituted, and the both ends of pipeline road are connected with the connector sleeve of import acquisition device and outlet acquisition device respectively；
The connection relationship of each component of import acquisition device are as follows: sliding rail is set on support frame, is provided on the slide rail
Sliding block, sliding block top are connected with connector sleeve, and the inside side of connector sleeve is connected with test petroleum pipeline, and the outside side of connector sleeve successively connects
Connect pressure sensor, temperature sensor and oil outlet pipe, the outlet acquisition device and import acquisition device knot having the same
Structure；
It is also equidistant on test petroleum pipeline other than being set to the temperature sensor of test petroleum pipeline inlet and outlet
Be provided with patch type temperature sensor, to measure pipeline during high temperature oil product passes through temperature along journey variation, in cunning
Laser displacement sensor is provided on rail, for measuring the displacement of sliding block on the slide rail during the experiment, the displacement be due to
Caused by the expansion for testing petroleum pipeline；
Oil transporting appliance includes upper layer fuel tank 1-1 and lower layer fuel tank 1-2, and lower layer's fuel tank connects oil outlet pipe, and upside fuel tank connects
Oil pipe line is taken back, lower layer's fuel tank is used to collect the oil product after reflux for test oil to be kept the temperature to and is passed through pipeline, upper layer fuel tank,
Upper layer fuel tank is connected with lower layer fuel tank by connecting line, is provided with attemperator in lower layer's fuel tank, for keeping test
With the temperature of oil, the exit of oil outlet pipe is provided with proportioning valve 1-5.
In the above-mentioned technical solutions, the length of the groove body is 9m, width 0.5m, is highly 0.5m.
In the above-mentioned technical solutions, groove body bottom parallel is furnished with two rows of columns, and quantity is 7 groups, each group column it
Between be spaced set.
In the above-mentioned technical solutions, the tempered glass is transparent, convenient for observation test soil thickness and pipeline fortune
The dynamic disturbance to the soil body.
In the above-mentioned technical solutions, make Extraction rate control in 5mL/s for adjusting Extraction rate in the proportioning valve.
In the above-mentioned technical solutions, the laser displacement sensor is adopted instrument by number and is connect with the end PC, measures real-time monitoring
Data.
In the above-mentioned technical solutions, the patch type temperature sensor is equidistant is set on pipeline road, and spacing is
0.8m。
In the above-mentioned technical solutions, the turning gear is made of the shaft of bottom fastening bracket and portion disposed thereon, is made
Entire test flume is overturn by fulcrum of shaft, and the angle of overturning is 0-8 degree.
In the above-mentioned technical solutions, the hydraulic push rod device includes hydraulic cylinder and sleeve.
In the above-mentioned technical solutions, the turning gear is set to oil return line side, and hydraulic push rod device is set to out
Oil pipe line side, the distance apart from import acquisition device are test slot length 1/4.
Embodiment:
This test intended research pipeline is placed on the native face at 3 ° of inclination angles, is passed through 80 DEG C of conduction oils continuously and healthily, and pipeline is axial
Orient displacement law.
Test the preparation stage:
Test sand used:
The Bohai Sea sea sand for selecting homogeneous, through measuring sand maximum dry density 1732kg/m3, experimental relationship 1555kg/m3,
Then according to Dr=0.6 (density 1657kg/m3) preparation soil sample, method of raining filling test flume.
Pipeline:
9 meters of long aluminum pipes are selected in test, pipeline outer diameter 36mm, internal diameter 3mm, and 2.32*10-5/ DEG C of thermal expansion coefficient.Including two
At endpoint, every 1 meter of patch, 1 patch type temperature sensor on pipeline, totally 10 patch type temperature sensors.By sensor with
Data collecting instrument is connected with the end PC.
Test oil:
Test oil is conduction oil, and conduction oil has the performance of heat resistanceheat resistant cracking and chemical oxidation, and heat transfer efficiency is good, heat dissipation
Fastly, thermal stability is fine.
Experimental stage:
Pipeline is placed on sand, and both ends are connect with platform, and is sealed interface with adhesive waterproof tape, guarantee test process
Middle oil product is not excessive.Oil tank heating attemperator is opened, conduction oil is preheated to 80 DEG C.It operates hydraulic cylinder and rises 0.8 meter, make
Test flume tilts 5 °.Proportioning valve is opened, oil speed 1L/s is passed through rapidly pipeline, and both ends ordinary temp sensor is measured into oily, fuel-displaced
Temperature difference is no more than 1 DEG C, i.e., it is believed that without significant change when oil temperature passes through pipeline, i.e. pipeline uniformly heats up, when line temperature is steady
After being scheduled on 80 DEG C, fuel tank valve is closed, makes the oil product temperature natural heat dissipation of pipeline and remaining in-line.When heating cooling, pipe
Drive both ends platform sliding, acquisition whole process laser displacement sensor reading are shunk in line expansion, and as two end movement of pipeline becomes
Change.Temperature is cooled to room temperature, and opens oil return valve, empties remaining conduction oil in pipe.Above steps may be repeated multiple times, obtains accumulative position
Shifting amount.Whole process, observable go out pipeline movement to the range of disturbance of the soil body.
After test:
Instrument is arranged, data are handled, it is contemplated that after 15 circulations, pipeline can generate the net displacement of 5-10cm to tension side
Amount.
It describes the invention in detail, but content is only the preferred embodiment of the present invention, cannot be recognized above
For for limiting practical range of the invention.Any changes and modifications in accordance with the scope of the present application should all still return
Belong within patent covering scope of the invention.
Claims (10)
1. a kind of pipeline axial orientation racking test device for considering sea bed inclination angle and falling temperature gradient, it is characterised in that: including examination
Check of foundation subsoil, oil transporting appliance, oil outlet pipe, oil return line, import acquisition device, outlet acquisition device, test petroleum pipeline, turning gear
And hydraulic push rod device, test petroleum pipeline are set in test flume, are respectively arranged with import acquisition at the both ends of test petroleum pipeline
Device and outlet acquisition device, oil transporting appliance are connected by oil outlet pipe with import acquisition device, and oil return line and outlet are passed through
Acquisition device is provided with turning gear and hydraulic push rod device below test flume；
The groove body bottom of test flume is equipped with tempered glass, soil layer is covered in groove body by upright supports, the two sides of groove body axial direction,
Pipeline road is placed on soil layer, and the both ends of groove body are provided with support frame, import is respectively set on the support frame at both ends
Acquisition device and outlet acquisition device, the import acquisition device and outlet acquisition device are by sliding rail, sliding block, connector sleeve, pressure
Force snesor, temperature sensor and laser displacement sensor are constituted, and the both ends of pipeline road are respectively with import acquisition device and out
The connector sleeve of mouth acquisition device is connected；
The connection relationship of each component of import acquisition device are as follows: sliding rail is set on support frame, is provided with sliding block on the slide rail,
Sliding block top is connected with connector sleeve, and the inside side of connector sleeve is connected with test petroleum pipeline, and the outside side of connector sleeve is sequentially connected pressure
Force snesor, temperature sensor and oil outlet pipe, the outlet acquisition device and import acquisition device structure having the same；
Other than being set to the temperature sensor of test petroleum pipeline inlet and outlet, the also equidistant setting on test petroleum pipeline
There is patch type temperature sensor, is provided with laser displacement sensor on the slide rail；
Oil transporting appliance includes upper layer fuel tank and lower layer's fuel tank, and lower layer's fuel tank connects oil outlet pipe, and upside fuel tank connects oil return line,
For lower layer's fuel tank for test oil keep the temperature to and be passed through pipeline, upper layer fuel tank is used to collect the oil product after flowing back, upper layer fuel tank with
Lower layer's fuel tank is connected by connecting line, is provided with attemperator in lower layer's fuel tank, for keeping the temperature of test oil,
The exit of oil outlet pipe is provided with proportioning valve.
2. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
It sets, it is characterised in that: the length of the groove body is 9-9.5m, width 0.5-1m, is highly 0.5-1m.
3. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
It sets, it is characterised in that: groove body bottom parallel is furnished with two rows of columns, and it is equidistant between each group column that quantity, which is 7-8 group,
Setting.
4. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
Set, it is characterised in that: the tempered glass be it is transparent, convenient for observation test soil thickness and pipeline movement the soil body is disturbed
It is dynamic.
5. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
It sets, it is characterised in that: in the proportioning valve for adjusting Extraction rate, make Extraction rate control in 5mL/s to 1L/s.
6. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
It sets, it is characterised in that: the laser displacement sensor is adopted instrument by number and connect with the end PC, and Real-time Monitoring Data is measured.
7. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
It sets, it is characterised in that: the patch type temperature sensor is equidistant to be set on pipeline road, spacing 0.8-1m.
8. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
Set, it is characterised in that: the turning gear is made of the shaft of bottom fastening bracket and portion disposed thereon, make entire test flume with
Shaft is that fulcrum is overturn, and the angle of overturning is 0-8 degree.
9. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
It sets, it is characterised in that: the hydraulic push rod device includes hydraulic cylinder and sleeve.
10. a kind of pipeline axial orientation racking test dress for considering sea bed inclination angle and falling temperature gradient according to claim 1
It sets, it is characterised in that: the turning gear is set to oil return line side, and hydraulic push rod device is set to oil outlet pipe side,
Distance apart from import acquisition device is to test the 1/4-1/3 of slot length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710702297.XA CN107449625B (en) | 2017-08-16 | 2017-08-16 | Consider the pipeline axial orientation racking test device of sea bed inclination angle and falling temperature gradient |
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| CN201710702297.XA CN107449625B (en) | 2017-08-16 | 2017-08-16 | Consider the pipeline axial orientation racking test device of sea bed inclination angle and falling temperature gradient |
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| CN110940257B (en) * | 2018-09-25 | 2021-09-24 | 国核电站运行服务技术有限公司 | Device and method for measuring inclination angle change of pipeline |
| CN114371019A (en) * | 2021-12-15 | 2022-04-19 | 天津大学 | Submarine pipeline axial walking pipe indoor test device |
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