CN105842047A - System for testing walking problem of submarine pipeline - Google Patents
System for testing walking problem of submarine pipeline Download PDFInfo
- Publication number
- CN105842047A CN105842047A CN201610439959.4A CN201610439959A CN105842047A CN 105842047 A CN105842047 A CN 105842047A CN 201610439959 A CN201610439959 A CN 201610439959A CN 105842047 A CN105842047 A CN 105842047A
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- pipeline
- test
- plate
- electric cylinder
- guide rail
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
Abstract
The invention discloses a system for testing a walking problem of a submarine pipeline. The system for testing the walking problem of the submarine pipeline comprises a test flume, a power system, a data collection system and a test pipeline, wherein the left side wall and the right side wall of the test flume are the same in structures, and are both provided with guide rail mounting frames, and pipe baffle plates which are connected with the guide rail mounting frames in a sliding manner along the vertical directions of guide rail mounting frames; the pipe baffle plates are provided with pipe passing-through holes; the power system consists of two symmetrically arranged power parts which are located on the left side and the right side of the test flume; each power part comprises a push plate opposite to the corresponding pipe passing-through hole; the push plates are driven by electric cylinders; the electric cylinders are controlled by a controller; the electric cylinders are mounted on sliding plates, the sliding plates are arranged on bottom frameworks; the data collection system comprises a computer, a pull pressure sensor and a data collecting instrument; the pull pressure sensor is connected among the electric cylinders and the push plate. By using the system for testing the walking problem of the submarine pipeline, a movement trajectory when the pipeline is subjected to axial acting force can be reflected more truly, and the change condition of axial force to which the pipeline is subjected is reflected more truly.
Description
Technical field
The present invention relates to modeling techniques field, particularly relate to a kind of submerged pipeline walking problem test system.
Background technology
Exploration to Yu Haiyang, the mankind never stop, and along with improving constantly of scientific level, the mankind are to Yu Haiyang
Exploring the most deep, the mankind have been able to set up on the sea level of the thousands of meters of depth of waters, so oil transportation drilling platforms
And abyssal environment is the environment of a cryogenic high pressure, the solidification produced in order to avoid wax fractionation during oil-gas transportation hinders
The normal transport of oil gas, it is necessary to pipeline carries out oil-gas transportation work in the environment of High Temperature High Pressure.Oil gas is carried at pipeline
Whole during to experience switching process repeatedly, with the opening and closing of pipeline, pipeline can experience an intensification and add
Pressure, the process of cooling blood pressure lowering.Generally, pipeline can experience during one's term of military service and repeatedly open, closes.Pipeline is being heated, is being cooled down
Time axial expansion or shrinkage occurs, simultaneously by the drag that sea bed is reverse, but owing to many reasons causes pipeline vertically
Uneven by drag, temperature returns original state rear line end and is not returned to initial position, overall axially displacement occurs.
Through cooling of repeatedly heating, this generation can open and close circulation constantly accumulation along with pipeline in pipeline axially-movable on the whole,
The generation being referred to as walking, walking of its image is very likely caused the fracture of pipeline by us, thus causes greatly
Environmental pollution and economic loss.During pipeline occurs walking, the axial drag of the soil body plays the most crucial work
With, the size of the axial drag that the soil body is provided is the most notable with situation of change impact for the generation of walking, in order to the greatest extent
Understand the situation of change of the axial drag of the soil body and the influence factor affecting the soil body axial drag size therein possibly, need
A kind of test system to reduce practical situation underground pipelines reciprocal axial motion time pipeline suffered by the generation change feelings of axial drag
Condition, designs offer experimental basis for pipeline safety.
Summary of the invention
The present invention solves technical problem present in known technology and a kind of submerged pipeline walking problem test system is provided
System, this system can be reacted pipeline movement locus when by axial force the most truly, be reacted the most truly
The axle power situation of change that pipeline is subject to.
The present invention solves that technical problem is adopted the technical scheme that present in known technology: a kind of submerged pipeline
Walking problem test system, including test flume, dynamical system, data collecting system and test pipeline；
The left and right sides wall construction of described test flume is identical, is equipped with guide rails assembling frame and is vertically slidably connected with it
Pipe dividing plate, offers one on described pipe dividing plate and crosses pore；Described dynamical system is by being positioned at the described test flume left and right sides
The power section that two are arranged symmetrically with is constituted, and each described power section includes that one is crossed, with described, the push-plate that pore is relative,
Described push-plate is driven by electric cylinder, and described electric cylinder is arranged on slide plate by controller control, described electric cylinder, described cunning
Plate is arranged on under(-)chassis, is arranged above with guide rail at described under(-)chassis, being arranged below with described at described slide plate
The slide block that guide rail coordinates, is provided with self-locking mechanism on described slide block；Described data collecting system includes computer, pressure
Sensor and data collecting instrument, described pull pressure sensor is connected between described electric cylinder and described push-plate, described tension and compression
Force transducer is connected with described sound state strain acquirement instrument, and described sound state strain acquirement instrument is connected with described computer.
In described guide rails assembling frame, it is connected with two vertical guide, is provided with in the both sides of described pipe dividing plate and vertically leads with described
The slide block that rail coordinates.
Before and after described test flume, sidewall is to use safety glass to be formed.
The present invention has the advantage that with good effect: arrange in test flume both sides can vertically move by using
Tube having holes dividing plate, pipe dividing plate can be freely-movable along vertical direction along with the motion of pipeline so that the vertical direction of pipeline
Without constraint；Electric cylinder is used to drive push-plate output power, it can be ensured that power section only exports axial force, and will not produce
Radial force, thus reaction pipeline movement locus when by axial force, reaction tube the most truly the most truly
The axle power situation of change that line is subject to.The present invention reduces the axially-movable that pipeline produces due to High Temperature High Pressure effect truly,
The electric cylinder of test flume both sides provides the axle power that pipeline moves, and test flume provides for the interaction between pipeline and the soil body
One platform, owing to pipeline both sides are mounted with electric cylinder simultaneously so that the simulation of the shuttling movement that pipeline is axial becomes can
Can, pipeline may need, due to the requirement of transport, the switch that in use carries out repeatedly so that the temperature of pipeline
The change gone round and begun again with pressure, therefore pipeline is it is possible at axially reciprocating, the present invention can simulate this fully and follow
Ring moves back and forth, and preferably reduces the walking process of pipeline, measures pipeline and occurs axial displacement past under cyclic load
The situation of change of axial drag suffered by pipeline during motion, measures the situation of change of the vertical displacement of pipeline simultaneously, enters again
And analyze and research and affect the factor of pipeline walking so that result of the test, closer to reality, provides more for Practical Project
Support for reliable data.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the test flume structural representation of the present invention；
Fig. 3 is the power section structural representation of the present invention；
Fig. 4 is the test pipeline schematic diagram of the present invention.
In figure: 1, test flume, 1-1, excessively pore, 1-2, pipe dividing plate, 1-4, guide rails assembling frame, 1-5, vertical guide,
1-6, slide block, 2-1, push-plate, 2-2, electric cylinder, 2-3, controller, 2-4, slide plate, 2-5, under(-)chassis, 2-6,
Guide rail, 2-7, slide block, 3, computer, 4, pull pressure sensor, 5, sound state strain acquirement instrument, 6, test pipeline.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate accompanying drawing
Describe in detail as follows:
The present invention relates to submerged pipeline under high temperature and high pressure environment, carry the axially-movable problem of pipeline during oil gas.Due to
The multiple switching of pipeline during oil gas transport so that pipeline is repeatedly heated, cooled down.Pipeline thus axial expansion occurs
Or shrink, pipeline is by the reverse drag of sea bed simultaneously.But owing to many reasons causes pipeline uneven by drag vertically,
Temperature returns original state rear line end and is not returned to initial position, overall axially displacement occurs.Through repeatedly heating
Cooling, this generation can open and close circulation constantly accumulation along with pipeline in pipeline axially-movable on the whole, and we are by its image
Be referred to as walking.Research for walking problem is a very stubborn problem, defeated for deep-sea High Temperature High Pressure
Oil pipeline walking problem is the most common, affects the hugest simultaneously, and the success or failure for pipeline designs serve most important
Effect.
Refer to Fig. 1～Fig. 4, a kind of submerged pipeline walking problem test system, including test flume 1, dynamical system,
Data collecting system and test pipeline.
The left and right sides wall construction of described test flume 1 is identical, is equipped with guide rails assembling frame 1-4 and vertically slides with it
The pipe dividing plate 1-2 connected, offers one on described pipe dividing plate 1-2 and crosses pore 1-1.
Described test flume 1 is the steel design of two STHs, is used for placing test soil.For the ease of observation experiment process,
Before and after described test flume, sidewall is to use safety glass to be formed.
In the present embodiment, described pipe dividing plate 1-2 with the attachment structure of described guide rails assembling frame 1-4 is: pacify at described guide rail
Frame up and be connected with two vertical guide 1-5 in 1-4, be provided with and described vertical guide 1-5 in the both sides of described pipe dividing plate 1-2
The slide block 1-6 coordinated.The left and right sidewall of test flume 1 is installed the pipe dividing plate 1-2, pipe dividing plate 1-2 that can move up and down
Freely up and down can move along the guide rail being fixed on test flume along with the motion of test pipeline, such that it is able to the truest
The movement locus of ground reaction test pipeline, and the drag change caused due to trail change.
Described dynamical system is made up of two power sections being arranged symmetrically with being positioned at described test flume 1 left and right sides, each
Described power section includes that one is driven by electric cylinder 2-2 with described excessively relative for pore 1-1 push-plate 2-1, described push-plate 2-1
Dynamic, described electric cylinder 2-2 is controlled by controller 2-3, and described electric cylinder 2-2 is arranged on slide plate 2-4, described slide plate 2-4
It is arranged on under(-)chassis 2-5, is arranged above with guide rail 2-6, under described slide plate 2-4 at described under(-)chassis 2-5
Face is provided with the slide block 2-7 coordinated with described guide rail 2-6, is provided with self-locking mechanism on described slide block 2-7.
Described data collecting system includes computer 3, pull pressure sensor 4 and data collecting instrument 5, and described pressure senses
Device 4 is connected between described electric cylinder 2-2 and described push-plate 2-1, be used for measuring described electric cylinder 2-2 export to described in push away
The horizontal axis power of dish 2-1.Described pull pressure sensor 4 is connected with described sound state strain acquirement instrument 5, described sound
State strain acquirement instrument 5 is connected with described computer 3.
In the present embodiment, test pipeline 6 is made up of the hollow thin-wall steel pipe of the different tube diameters of a length of 2 meters, during test,
Test pipeline 6 is placed on the test soil in described test flume 1, and end is installed on described mistake in pore 1-1.
Before on-test, first measure the physico mechanical characteristic banketed, when banketing as cohesiveless soil, the physics that need to measure
Mechanical index is soil body unit weight, moisture content, degree of compaction and natural slop angle.It is loaded into examination by the degree of compaction controlling the soil body
In check of foundation subsoil, according to the result of calculation of finite element, the Plastic flow of soil region that pipeline axially-movable produces is little at depth direction
In 0.5 times of caliber, therefore the bottom soil body thickness of pipeline should be greater than 0.5 times of caliber, then lays test section, according to examination
Test the fltting speed that requiring, electric cylinder is set, single pass test can be carried out, loading test can also be circulated simultaneously.
After on-test, start computer, data collecting instrument successively.First correspond to become instrument be balanced, reset, subsequently
Opening speed control chamber thus control the movement velocity of electric cylinder so that pipeline section moves with certain speed at axial direction, speed
Degree can change between 1～20mm/s, and the maximum of axial displacement is limited by the model of electric cylinder and the size of test flume
By practice, system, finds that the design system can fully reflect the displacement of pipeline section completely.
After off-test, closing velocity control chamber, data collecting instrument, computer successively, repairing experiment data.
Although the preferred embodiments of the present invention being described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned
Detailed description of the invention, above-mentioned detailed description of the invention is only schematically, is not restrictive, this area general
Logical technical staff is under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection,
Can be to make a lot of form, within these belong to protection scope of the present invention.
Claims (3)
1. a submerged pipeline walking problem test system, it is characterised in that include test flume, dynamical system, number
According to acquisition system and test pipeline；
The left and right sides wall construction of described test flume is identical, is equipped with guide rails assembling frame and is vertically slidably connected with it
Pipe dividing plate, offers one on described pipe dividing plate and crosses pore；
Described dynamical system is made up of two power sections being arranged symmetrically with being positioned at the described test flume left and right sides, Mei Gesuo
Stating power section and include that one is crossed the relative push-plate of pore with described, described push-plate is driven by electric cylinder, described electric cylinder by
Controller controls, and described electric cylinder is arranged on slide plate, and described slide plate is arranged on under(-)chassis, at described under(-)chassis
Be arranged above with guide rail, be arranged below, at described slide plate, the slide block coordinated with described guide rail, described slide block is provided with from
Latch mechanism；
Described data collecting system includes computer, pull pressure sensor and data collecting instrument, and described pull pressure sensor is even
Being connected between described electric cylinder and described push-plate, described pull pressure sensor is connected with described sound state strain acquirement instrument, institute
State sound state strain acquirement instrument to be connected with described computer.
Submerged pipeline walking problem the most according to claim 1 test system, it is characterised in that lead described
It is connected with two vertical guide in rail installing frame, is provided with, in the both sides of described pipe dividing plate, the slide block coordinated with described vertical guide.
Submerged pipeline walking problem the most according to claim 1 test system, it is characterised in that described test
Before and after groove, sidewall is to use safety glass to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610439959.4A CN105842047A (en) | 2016-06-15 | 2016-06-15 | System for testing walking problem of submarine pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610439959.4A CN105842047A (en) | 2016-06-15 | 2016-06-15 | System for testing walking problem of submarine pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105842047A true CN105842047A (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610439959.4A Pending CN105842047A (en) | 2016-06-15 | 2016-06-15 | System for testing walking problem of submarine pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449625A (en) * | 2017-08-16 | 2017-12-08 | 天津大学 | A kind of pipeline axial orientation racking test device for considering sea bed inclination angle and falling temperature gradient |
| CN107462432A (en) * | 2017-08-16 | 2017-12-12 | 天津大学 | A kind of experimental rig for considering steel catenary riser tension force effect underground pipelines axial orientation displacement |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449625A (en) * | 2017-08-16 | 2017-12-08 | 天津大学 | A kind of pipeline axial orientation racking test device for considering sea bed inclination angle and falling temperature gradient |
| CN107462432A (en) * | 2017-08-16 | 2017-12-12 | 天津大学 | A kind of experimental rig for considering steel catenary riser tension force effect underground pipelines axial orientation displacement |
| CN107449625B (en) * | 2017-08-16 | 2019-10-11 | 天津大学 | Consider the pipeline axial orientation racking test device of sea bed inclination angle and falling temperature gradient |
| CN107462432B (en) * | 2017-08-16 | 2019-12-24 | 天津大学 | Test device for axial directional displacement of tube spool under action of tension of steel catenary riser |
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