CN207717497U - Consider experimental rig of the deep-sea underground pipe under by axial force and pipeclay coupling - Google Patents
Consider experimental rig of the deep-sea underground pipe under by axial force and pipeclay coupling Download PDFInfo
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- CN207717497U CN207717497U CN201721783862.1U CN201721783862U CN207717497U CN 207717497 U CN207717497 U CN 207717497U CN 201721783862 U CN201721783862 U CN 201721783862U CN 207717497 U CN207717497 U CN 207717497U
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- oil cylinder
- pipeclay
- axial
- pipe fitting
- coupling
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Abstract
The utility model is related to a kind of experimental rig of consideration deep-sea underground pipe under by axial force and pipeclay coupling, include the native case of pipeclay coupling of deepwater high-pressure cabin and position in the inner, for simulating the interaction for testing pipe fitting and the soil body under deepwater environment, the both ends for testing pipe fitting couple the babinet both sides stretching of native case from pipeclay and are connect with box sealing, the native case of pipeclay coupling includes that the native upper box part end cap of pipeclay coupling, axle power oil cylinder, axial excitation device, lateral exciting device and vertical exciting device, upper part end cap are provided with data line punched out；The side for testing pipe fitting is connected with the axial oil cylinder for applying axial force to it, and axial oil cylinder is fixed on the inside in the deepwater high-pressure cabin of homonymy；Its other side is connected with external oil cylinder, and external oil cylinder applies vertical and lateral exciting force for applying axial exciting force, while testing the vertical of pipe fitting and being laterally utilized respectively external oil cylinder.
Description
Technical field
The utility model is related to a kind of experimental rigs of the simulation in-service buried pipeline pipeclay coupling in deep-sea, utilize the dress
It sets, may be implemented to make deep-sea buried pipeline in the joint of a series of complex external force such as external high pressure, axial force and the power that impulses
With.
Background technology
Pipeline be always oil gas transport in most efficiently, most economical reliable major way.It is provided however as ocean
The exploitation in source is gradually promoted to deep-sea, although China has had accumulated a large amount of experience in shallow sea field, in deep-sea field,
Environment residing for in-service seabed underground pipe is complicated and changeable, and pipeline needs to bear deep sea water high pressure, the effect of the pipeline soil body, is
To the test of the extreme loads such as submarine earthquake, tsunami.Therefore true sea situation is realized by certain experimental rig and test method
Under pipeclay coupling, while by the dynamic response problem of high pressure and responsive to axial force be the utility model research direction.
In temperature and internal pressure collective effect, submarine pipeline volume will occur submarine pipeline during transfer oil
The boundary condition limitation of expansion, pipeclay interaction and submarine pipeline is axial to be moved freely and generates huge axle power, temperature
Degree and internal pressure are to generate two principal elements of axle power, thus can not be ignored to the effect of deep-sea underground pipe to axial force；Meanwhile
Correlative study shows that the relevant parameter of seabed soil and the buried depth of pipeline occur bending deformation to pipeline and suffer from various degree
Influence, thus consider the pipeclay coupling under different situations, reliability design to deep-sea underground pipe pipe-line system and just
The dynamic control often run can play the role of vital.
For presently, complicated pipeclay coupling stress problem must be managed by on-the-spot test technology, finite element analysis
By the methods of studied, can need further to send out with the experimental rig and test method of real simulation pipeclay coupling
Exhibition, domestic and international related scientific research institution is designed with some pipeclay simulation test soil casees, but this kind of experimental rig shortcoming is also very bright
It is aobvious：
1. repeatable usability is poor.
2. the native case cost of experiment is higher.
Thus for deep seafloor pipeline, requirement of engineering that the experimental provision preferably gears to actual circumstances is needed, thus
It is a kind of scientific and effective research method that pipeline and the soil body, which are narrowed down to according to a certain percentage in experimental provision,.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art to design a kind of knot for deep seafloor pipeline
Structure is simple, convenient disassembly, can be used for simulating deep-sea buried pipeline in the case where considering the effect of the load such as axial force, earthquake, pipeclay coupling
The special purpose test equipment of effect.The utility model is considering by extreme loads such as high temperature and pressure, pipeline interaction and earthquakes
It influences under the premise of causing axial force, native case is coupled, it can be achieved that during to seabed buried pipeline transfer oil using pipeclay
Pipeclay coupling simulation, to for the structure design of deep-sea buried pipeline provide Technical Reference.The skill of the utility model
Art scheme is as follows：
It is a kind of to consider experimental rig of the deep-sea underground pipe under by axial force and pipeclay coupling, including deepwater high-pressure cabin and
The native case 17 of pipeclay coupling of position in the inner tests pipe fitting for simulating the interaction for testing pipe fitting 6 and the soil body under deepwater environment
The babinet both sides that 6 both ends couple native case 17 from pipeclay are stretched out and are connect with box sealing, which is characterized in that the pipeclay coupling
It includes that pipeclay couples native upper box part end cap 2, axle power oil cylinder 10, axial excitation device 11,12, lateral exciting device 18 to close native case 17
And vertical exciting device 7,8,9, upper part end cap 2 is provided with data line punched out 5；
The side for testing pipe fitting 6 is connected with the axial oil cylinder 10 for applying axial force to it, and axial oil cylinder 10 is fixed on
The inside in the deepwater high-pressure cabin of homonymy；Its other side is connected with external oil cylinder 12, and external oil cylinder 12 is used to apply axial exciting force,
It is testing the vertical of pipe fitting 6 simultaneously and is laterally being utilized respectively the vertical and lateral exciting force of the application of external oil cylinder 9,21；It is each outer
The connection of portion's oil cylinder and experiment pipe fitting 6 is all made of the connection type of spherical link slot and multi-directional ball, is simulated by poles such as earthquakes with this
Hold lower axial, the vertical and lateral exciting force generated of load effect.
The utility model is directed to in-service deep-sea buried pipeline, provides a kind of approximate simulation considered under pipeclay coupling
Experimental rig couples native case using pipeclay and the true deep-sea soil body or the approximate soil body can be used, and simulation deep-sea buried pipeline is practical
Military service operating mode is realized the simulation of pipeclay coupling, is had the advantage that compared with the domestic and international prior art：
(1) design of the native upper box part end cap of pipeclay coupling can adjust its soil according to a certain percentage according to actual conditions
Body thickness, to simulate the buried depth of buried pipeline under true sea situation；
(2) according to soil mechanics theory, native influence area is semicircle for the design lower part of the native case of pipeclay coupling, thus under pipeline
Portion uses semicircular structure, saves the quality of native box space and the required soil body.
(3) the lateral trepanning of the native case of pipeclay coupling uses elastomer washer, can be by changing gasket thickness, using different rulers
Very little pipeline is simulated so that the experimental provision practicability higher.
Description of the drawings
Fig. 1 pipeclay coupling test equipment
Figure label explanation：1- elastomer washers；The native upper box part end cap of 2- pipeclays coupling；3- inside pipe fitting high temperature conveys
Oil；The 4- soil bodys；5- data line punched out；6- tests pipe fitting；7- spherical shape link slots；The vertical exciting operating bars of 8-；The vertical excitings of 9-
Force application rod；10- axle power oil cylinders；11- axial excitation operating bars；12- axial excitation force application rods；13- pressurizations hole；14- data acquire
Hole；15- water injection holes；16- osculums；The native case of 17- pipeclays coupling；The lateral exciting devices of 18-；22- deep sea pressure chamber devices.
The native case schematic diagram of Fig. 2 pipeclays coupling
Figure label explanation：1- elastomer washers；The native upper box part end cap of 2- pipeclays coupling；3- inside pipe fitting high temperature conveys
Oil；The 4- soil bodys；5- data line punched out；6- tests pipe fitting；7- spherical shape link slots；The vertical exciting operating bars of 8-；The vertical excitings of 9-
Force application rod；10- axle power oil cylinders；11- axial excitation operating bars；12- axial excitation force application rods；The native case of 17- pipeclays coupling；The sides 18-
To exciting device.
Fig. 3 Section A-A schematic diagrames
Figure label explanation：1- elastomers；The native upper box part end cap of 2- pipeclays coupling；3- inside pipe fitting high temperature conveying oil；
The 4- soil bodys；6- tests pipe fitting；The vertical exciting spherical shape link slots of 7-；The vertical exciting operating bars of 8-；The vertical exciting force application rods of 9-；12-
Axial excitation force application rod；The native case of 17- pipeclays coupling；The lateral exciting spherical shape link slots of 19-；The lateral exciting operating bars of 20-；The sides 21-
To exciting force application rod.
Specific implementation mode
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described further：
A kind of experimental rig considering deep-sea underground pipe under by axial force and pipeclay coupling, is set using deepwater high-pressure cabin
It is standby to form closed hyperbaric environment (such as Fig. 1), simulate the high hydraulic pressure in outside in the case of deep-sea；Native case simulation pipe is coupled using pipeclay
The interaction (such as Fig. 2) of road and the soil body.Pipeclay coupling soil case 17 is mainly by elastomer washer 1, the native upper box part of pipeclay coupling
End cap 2, axle power oil cylinder 10, axial excitation device 11,12, lateral exciting device 18 and vertical exciting device 7,8,9 form.And
Upper part end cap 2 is provided with data line punched out 5.
As shown in Figures 2 and 3, it is to consider that experimental rig of the deep-sea underground pipe under by axial force and pipeclay coupling shows
It is intended to, cardinal principle is as follows：
High temperature high pressure oil is inputted into experiment pipe fitting 6 using relevant device, and pipe fitting both ends are shut.The side of pipeline is solid
It is scheduled on pipeclay coupling 17 inner wall of native case, and applies axial force using internal axial oil cylinder 10 in the side, pipeline axial force is applied
Add, more the stressing conditions close to deep seafloor buried pipeline under high-temperature and high-pressure conditions；The other side of pipeline then utilizes outside
Oil cylinder 12 apply axial exciting force, while the vertical of pipeline and be laterally utilized respectively external oil cylinder 9,21 application it is vertical and lateral
Exciting force, three directions act on respectively, and use spherical link slot and multi-directional ball, it is ensured that three direction excitings simultaneously plus
It carries, does not interfere, simulated with this and act on lower axial, the vertical and lateral exciting force generated by extreme loads such as earthquakes.
After testing the fixation of 6 relative position of pipe fitting, it can determine its buried depth according to corresponding experimental data, be loaded into native case
The corresponding soil body, to the relative position for adjusting top end cap 2 with testing pipe fitting, to realize the simulation of native environment around pipe fitting；
It is provided with data line punched out 5 on the soil upper box part of pipeclay coupling simultaneously end cap 2, it is ensured that DATA REASONING line and high pressure water all can be smooth
Pass through；The trepanning of pipeclay coupling soil case 17 is provided with elastomer washer 1, and outer wall couples native case 17 with pipeclay and contacts, inner wall
It is contacted with experiment pipe fitting 6, cross section is annulus and model is had nothing in common with each other, and can meet the pipeclay coupling test of various outer diameter pipeline
Progress while ensure the soil body will not be scattered in except native case during the test；Deep-sea high voltage cabin is finally utilized, in pipeclay
Apply corresponding hydraulic pressure outside the native case of coupling, simulation pipeline finally realizes that deep-sea is buried with the deep-sea water environment outside the soil body, the equipment
Combination loading of the ground pipeline under internal high temperature and pressure, external high hydraulic pressure and earthquake loading.
Using the experimental rig, using the different soil bodys (its density, soil body friction coefficient, Poisson's ratio etc. are had nothing in common with each other),
The pipeclay coupling under different environments such as subsea can be simulated, verifies relative horizontal displacement of the different seabed soils to pipeline, i.e.,
The influence of the horizontal buckling of submarine pipeline.Simultaneously by applying hydraulic pressure, buckling situation of the approximate simulation pipeline under different buried depth can
To carry out actual verification and discussion to the conclusion obtained to use numerical analysis techniques by the experimental rig and test method,
Theory combines experiment, and research conclusion can be made more genuine and believable.
It is as follows to test process：
1. testing preparation
Derusting and light grinding process are carried out to experiment pipe fitting 6, choose respective cross-section, and delimit foil gauge patch at the section
Panel region and pressure sensor sticking area.
2. the assembly of the native case of pipeclay coupling
As shown, native 17 both sides of case of pipeclay coupling are inserted at 6 both ends of experiment pipe fitting and fix its relative position, selection is closed
The elastomer washer 1 of suitable size fills up the gap between pipe fitting and native case both sides outside plate, to ensure the watertightness of native case；It will answer
Become piece connecting line and pressure sensor connecting line to be bonded with experiment pipe fitting 6, and the number on native upper box part end cap 2 is coupled via pipeclay
It is stretched out according to line punched out 5；Pipeclay is coupled native case 17 to be horizontally arranged, the corresponding soil body 4 is loaded thereto, until the pipe fitting top soil body
Thickness can reach the requirement for simulating practical sea situation, and the native upper box part end cap 2 of pipeclay coupling, such elastomer are installed after filling
Washer 1, the native upper box part end cap 2 of pipeclay coupling, the experiment soil body 4 and experiment pipe fitting 6 just constitute an entirety, keep pipeclay coupling
Data line punched out 5 on native case 17 is upward.
3. the processing at pipe fitting both ends
High temperature high pressure oil is inputted into experiment pipe fitting 6, experiment pipe fitting both ends are shut, simulates the practical military service operating mode of pipe fitting, and
It is fixed on the both ends of axle power oil cylinder 10.
4. fitting into cabin
After experiment pipe fitting 6, pipeclay coupling soil case 2,17, pipe fitting both ends flange components are assembled, promoted using end cap
Equipment imports the test specimen assembled inside High-Voltage Experimentation nacelle.
5. connecting excitation head
After experiment pipe fitting 6 and pipeclay coupling soil case 2,17 are installed in place, 10 vertical exciting of connection axial static load load cylinder
Device 7,8,9；Axial excitation device 11,12；Lateral exciting device 18,19,20,21.
6. pressure chamber water filling
The water filling into deep sea pressure cabin 22 simulates deep-sea underground pipe external aqueous environment, and by hole 13 of pressurizeing, utilizes pressurization
Pump is loaded into required pressure.
7. implementing experiment
Axial oil cylinder is opened, static load is applied to pipeline；Vertical, lateral, axial excitation device is opened, input-to-state stabilization is composed,
Realize the load of seismic (seismal.
Claims (1)
1. a kind of experimental rig considering deep-sea underground pipe under by axial force and pipeclay coupling, including deepwater high-pressure cabin and position
The native case (17) of pipeclay coupling in the inner, for simulating the interaction for testing pipe fitting (6) and the soil body under deepwater environment, developmental tube
The babinet both sides that the both ends of part (6) couple native case (17) from pipeclay are stretched out and are connect with box sealing, which is characterized in that described
The native case (17) of pipeclay coupling include the native upper box part end cap (2) of pipeclay coupling, axle power oil cylinder (10), axial excitation device (11,12),
Lateral exciting device (18) and vertical exciting device (7,8,9), upper part end cap (2) are provided with data line punched out (5)；Examination
The side for testing pipe fitting (6) is connected with the axial oil cylinder (10) for applying axial force to it, and axial oil cylinder (10) is fixed on homonymy
Deepwater high-pressure cabin inside；Its other side is connected with external oil cylinder (12), and external oil cylinder (12) is used to apply axial exciting force,
It is testing the vertical of pipe fitting (6) simultaneously and is laterally being utilized respectively the vertical and lateral exciting force of external oil cylinder (9,21) application；Respectively
A external oil cylinder is all made of the connection type of spherical link slot and multi-directional ball with the connection of experiment pipe fitting (6), is simulated by ground with this
Lower axial, the vertical and lateral exciting force generated of the extreme loads such as shake effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783862.1U CN207717497U (en) | 2017-12-19 | 2017-12-19 | Consider experimental rig of the deep-sea underground pipe under by axial force and pipeclay coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783862.1U CN207717497U (en) | 2017-12-19 | 2017-12-19 | Consider experimental rig of the deep-sea underground pipe under by axial force and pipeclay coupling |
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| Publication Number | Publication Date |
|---|---|
| CN207717497U true CN207717497U (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721783862.1U Expired - Fee Related CN207717497U (en) | 2017-12-19 | 2017-12-19 | Consider experimental rig of the deep-sea underground pipe under by axial force and pipeclay coupling |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470533A (en) * | 2019-07-18 | 2019-11-19 | 常州大学 | Union elbow failure analysis experimental rig under a kind of soil environment |
| CN111624109A (en) * | 2020-05-06 | 2020-09-04 | 天津大学 | System for simulating interaction force of pipeline, soil body fault and water in deepwater environment |
| CN112362452A (en) * | 2020-11-18 | 2021-02-12 | 中国科学院力学研究所 | Experimental device and method for simulating axial pipe walking of submarine pipeline on shallow layer of soft clay seabed |
| CN112577826A (en) * | 2020-12-02 | 2021-03-30 | 天津大学 | Test platform for simulating uniform load of pipeline in deepwater environment |
| CN112577827A (en) * | 2020-12-02 | 2021-03-30 | 天津大学 | Test method for simulating uniform load of pipeline in deepwater environment |
| CN113409670A (en) * | 2021-04-23 | 2021-09-17 | 海南大学 | Pipeline shield construction device for simulating deep sea environment |
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2017
- 2017-12-19 CN CN201721783862.1U patent/CN207717497U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470533A (en) * | 2019-07-18 | 2019-11-19 | 常州大学 | Union elbow failure analysis experimental rig under a kind of soil environment |
| CN110470533B (en) * | 2019-07-18 | 2022-02-08 | 常州大学 | Analysis test device for destruction of elbow joint under soil environment |
| CN111624109A (en) * | 2020-05-06 | 2020-09-04 | 天津大学 | System for simulating interaction force of pipeline, soil body fault and water in deepwater environment |
| CN112362452A (en) * | 2020-11-18 | 2021-02-12 | 中国科学院力学研究所 | Experimental device and method for simulating axial pipe walking of submarine pipeline on shallow layer of soft clay seabed |
| CN112577826A (en) * | 2020-12-02 | 2021-03-30 | 天津大学 | Test platform for simulating uniform load of pipeline in deepwater environment |
| CN112577827A (en) * | 2020-12-02 | 2021-03-30 | 天津大学 | Test method for simulating uniform load of pipeline in deepwater environment |
| CN112577827B (en) * | 2020-12-02 | 2022-03-29 | 天津大学 | Test method for simulating uniform load of pipeline in deepwater environment |
| CN113409670A (en) * | 2021-04-23 | 2021-09-17 | 海南大学 | Pipeline shield construction device for simulating deep sea environment |
| CN113409670B (en) * | 2021-04-23 | 2023-03-31 | 海南大学 | Pipeline shield construction device for simulating deep sea environment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20181219 |