CN201965061U - Device for fatigue test of deepwater riser - Google Patents
Device for fatigue test of deepwater riser Download PDFInfo
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- CN201965061U CN201965061U CN2010206460909U CN201020646090U CN201965061U CN 201965061 U CN201965061 U CN 201965061U CN 2010206460909 U CN2010206460909 U CN 2010206460909U CN 201020646090 U CN201020646090 U CN 201020646090U CN 201965061 U CN201965061 U CN 201965061U
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- standpipe
- soil body
- loading cylinder
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- deep water
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Abstract
The utility model relates to a device for fatigue test of a deepwater riser, which is characterized in that the device comprises a main cylinder, two axial load cylinders, a riser test sample assembly, transverse servo load cylinders and soil body action servo load cylinders, wherein an external pressure interface and an air relief valve are arranged at the top of the main cylinder; the two ends of the main cylinder are connected with the two axial load cylinders, of which each has an axial force interface respectively; the two ends of the riser test sample assembly are hinged on the pistons of the axial load cylinders on the corresponding sides respectively; the riser test sample assembly comprises a test sample body and a connecting rod; a simulated soil body is arranged below the test sample body; two internal pressure interfaces are arranged at the two ends of the test sample body; a plurality of sensors are arranged on the test sample body, and the test lead wire of each senor passes through the main cylinder and then connects with a testing device; the individual transverse servo load cylinders and the individual soil body action servo load cylinders are all arranged on the main cylinder, the pistons of two of the transverse servo load cylinders are butted against the top of the test sample body, and the piston of the other transverse servo load cylinder is butted against the bottom of the junction of the test sample body and the connecting rod; and the pistons of the individual soil body action servo load cylinders are butted against the bottom of the simulated soil body.
Description
Technical field
The utility model relates to a kind of fatigue test device, particularly about a kind of deep water standpipe fatigue test device that can simulate the sea bed Contact Effect.
Background technology
The stressed more complicated of general deep water standpipe, as shown in Figure 1, stressed type generally has the seawater external pressure, press in the tube fluid, the submerged riser buoyant weight, and factor such as wave the ocean current dynamic alternation tension and compression, the flecition that cause, the location for the deep water standpipe and also have the complicated dynamic alternation effect of pipeclay.From stress state, the deep water standpipe is in complicated three-dimensional alterante stress state, is very easy to take place fatigue failure, and is very different with fatigue failure meeting under unidirectional (tension and compression, bending) stress state.
With regard to present circumstances, do not see relevant deep water standpipe both at home and abroad as yet under interior external pressure, axial force, moment of flexure and pipeclay acting in conjunction condition, the fatigue experimental device of simulation deep water standpipe complex stress condition and the document of method.Generalized case is to use conventional tension and compression, bending fatigue experimental machine, carries out the fatigue experiment research of the uniaxial stressed state of deep water standpipe material or structure, and is bigger with the force-bearing situation deviation of deep water standpipe.Therefore, on the basis of certain theoretical analysis, simulation deep water operating mode is set up rational experimental technique and device, in conjunction with the fatigue behaviour of experimental study deep water standpipe, for economical, safe and reliable mining depth aqueous hydrocarbon, has very important significance.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of the simulation under the deep water conditions, under internal pressure, external pressure, axial force, moment of flexure and pipeclay acting in conjunction, the fatigue problem that is produced is carried out the deep water standpipe fatigue test device of simulated experiment to the deep water standpipe.
For achieving the above object, the utility model is taked following technical scheme: a kind of deep water standpipe fatigue test device is characterized in that: it comprises that a master cylinder tube, two axially loads cylinder, a standpipe test specimen assembly, some horizontal servo loading cylinders, the servo loading cylinder of some soil body effects; Described master cylinder tube top one end is provided with an external pressure interface, and the other end is provided with an air release; Described two axially load the two ends that cylinder is sealedly connected on described master cylinder tube respectively, are respectively arranged with an axial force interface on the two described axial loading cylinders; Described standpipe sample assembly two ends are hinged on respectively on the piston of described axial loading cylinder of a corresponding side, and described standpipe sample assembly comprises a sample main body, and the connecting rod that is rotationally connected by straight pin with an end of described sample main body; Be provided with the simulation soil body between described sample lower body part and the described master cylinder tube; The two ends of described sample main body are respectively arranged with one and are communicated with inner interior crimping mouth; Described sample main body is provided with some displacement transducers and strain transducer, and the test lead of each described sensor passes described master cylinder tube and connects testing tool; Described horizontal servo loading cylinder is arranged on the described master cylinder tube, wherein the piston crown of two described horizontal servo loading cylinders is at described sample main body top, and the piston crown of another described horizontal servo loading cylinder is in the bottom, straight pin junction of described sample main body and described connecting rod; The servo loading cylinder of described soil body effect is arranged on the described master cylinder tube, and each piston crown on it is in the bottom of the described simulation soil body.
Described axial force interface, external pressure interface, interior crimping mouth all are communicated with hydraulic control system by hydraulic path, and each described hydraulic path is provided with pressure transducer.
Each described horizontal servo loading cylinder and the servo loading cylinder of soil body effect all are communicated with hydraulic servo control system by hydraulic path, and each described hydraulic path is provided with pressure transducer.
The joint of the described axial loading cylinder of described master cylinder tube and two ends is respectively arranged with external thread, and is integral by the clamp connection of a clasp nut formula respectively.
Described coupling arrangement between described standpipe sample assembly and the described axial loading cylinder comprises the joint that is separately positioned on described standpipe sample assembly two ends, and two described joints are connected by the piston rotation on the described axial loading cylinder of a straight pin and respective end respectively.
The bottom of described standpipe sample assembly, described simulation soil body two ends are provided with spacer pad, and described two axially are provided with the axial location ring in the loading cylinder.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is owing to be provided with standpipe sample assembly in the master cylinder tube, and be provided with axial force interface, interior crimping mouth, external pressure interface, and the loading cylinder that moment of flexure and pipeclay acting force are provided, therefore, can apply internal pressure, external pressure, axial force, moment of flexure and pipeclay acting force to standpipe sample assembly, with the three-dimensional complex stress strain regime of simulation standpipe, thereby can experimentize research to the fatigue behaviour of tubular column structures such as deep water standpipe.2, therefore the utility model, can replace the framework for support of traditional experiment machine, compact conformation, conserve space owing to adopt the bearing object of master cylinder tube as all load of standpipe sample assembly.3, the utility model sample main body two ends are connected with connecting rod with end load cylinder piston by straight pin respectively, the sample main body can be rotated around straight pin, the connecting rod other end is connected with the loading cylinder piston of the other end by straight pin, connecting rod can rotate around straight pin, therefore, connecting rod both can transmit axial force, was convenient to rotatablely moving of sample main body again, avoided transverse force to act on end axis to loading on the cylinder piston seal.4, the utility model is owing to adopt clasp nut formula clamp connection with end axis to loading being connected of cylinder with master cylinder tube two ends, therefore, be convenient to the quick mounting or dismounting of standpipe sample assembly, and can connect the secondary cylinder barrel of expansion or other annexes as required, to satisfy different experiment needs.5, the utility model internal pressure, external pressure and axial force that standpipe sample assembly can be subjected to applies by independent hydraulic system respectively, therefore, can choose suitable medium according to different needs, the optional generally speaking aqueous medium of using pollutes, reduces experimental cost to reduce.6, the utility model applies transverse curvature and soil body acting force by servo loading cylinder to standpipe sample assembly, and the applying and control of servo loading cylinder power can be adopted routine, ripe hydraulic servo control system, is easy to realize.7, the utility model laterally loads the straight pin bottom that cylinder is installed in sample main body and connecting rod, can play the effect of supporting constraint sample main body, and may command sample main body rotatablely moves again.The utility model integrates the kinds of experiments situation, compact conformation, conserve space, can be widely used in the deep water standpipe axially, in the experimentation of hoop (circumferentially), fatigue problem that radially three-dimensional stress or strain variation produced.
Description of drawings
Fig. 1 a, Fig. 1 b are the stressed synoptic diagram of sea risers section
Fig. 2 is the utility model standpipe fatigue test device synoptic diagram
Fig. 3 is the utility model standpipe sample assembly basic structure synoptic diagram
Fig. 4 is the crooked and soil body effect fatigue test device synoptic diagram of the utility model standpipe
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As Fig. 2, shown in Figure 3, the utility model device comprises a master cylinder tube 1, the two ends of master cylinder tube 1 are respectively arranged with an axial loading cylinder 2 with termination sealing function, two axially load and are respectively arranged with piston 4 that an axial force interface 3, two axially loads cylinders 2 on the cylinders 2 respectively by the be rotationally connected two ends of a standpipe sample assembly 6 of coupling arrangement 5.Standpipe sample assembly 6 comprises a sample main body 7, and the connecting rod 9 that is rotationally connected by straight pin 8 with an end of sample main body 7.Be provided with the simulation soil body 10 between sample main body 7 bottoms and the master cylinder tube 1.Master cylinder tube 1 top is provided with a pair of horizontal servo loading cylinder 11,12 at interval, and the piston crown of horizontal servo loading cylinder 11,12 is at the top of sample main body 7; Master cylinder tube 1 bottom is provided with one group of servo loading cylinder 13 of soil body effect, and the piston crown in the servo loading cylinder 13 of each soil body effect is in the bottom of the simulation soil body 10; Master cylinder tube 1 bottom also is provided with a horizontal servo loading cylinder 14, and the piston crown of horizontal servo loading cylinder 14 is in the junction bottom of sample main body 7 with the straight pin 8 of connecting rod 9.Top one end of master cylinder tube 1 is provided with an external pressure interface 15, and the other end is provided with an air release 16.The two ends of the sample main body 7 of standpipe sample assembly 6 are respectively arranged with the interior crimping mouth 17 of a connection test specimen main body 7 inside.Sample main body 7 is provided with sensors such as some displacement transducers and strain transducer, is connected with test lead 23 on the sensor, and the other end of test lead 23 passes master cylinder tube 1 and connects testing tool.
During experiment, axial force interface 3, external pressure interface 15, interior crimping mouth 17 all are communicated with hydraulic control system by hydraulic path, each hydraulic path is provided with instrument such as pressure transducer, by the software and hardware in the liquid control system, can realize applying and observing and controlling to internal pressure, external pressure and the axial force of standpipe sample assembly 6.
During experiment, each horizontal servo loading cylinder 11,12, the servo loading cylinder 13 of soil body effect, horizontal servo loading cylinder 14 all are communicated with hydraulic servo control system by hydraulic path, each hydraulic path is provided with instrument such as pressure transducer, and, realize applying and observing and controlling of transverse curvature power that standpipe sample assembly 6 is applied and soil body effect alternate load by the software and hardware in the hydraulic servo control system.
Above-mentioned hydraulic control system is mainly used in the stable control of the inside and outside pressure and the axial force of standpipe sample assembly 6, do not need too big flow and power, and, in order to save experimental cost, and the leakage pollution when reducing 6 dismounting of standpipe sample assembly, can adopt aqueous medium.
Above-mentioned hydraulic servo control system is mainly used in the transverse force of standpipe sample assembly 6 and the dynamic control of displacement and soil body acting force, needs bigger flow and power, and actuating medium is a hydraulic oil.
In the foregoing description, master cylinder tube 1 axially loads being connected of cylinder 2 with both ends, can be in the following ways: promptly be respectively arranged with external thread in master cylinder tube 1 and two end axles to the joint that loads cylinder 2, and link into an integrated entity by a clasp nut formula clip 18 respectively.
In the foregoing description, standpipe sample assembly 6 two ends are connected with the axial loading cylinder 2 of respective end by coupling arrangement 5 respectively, this coupling arrangement 5 comprises that joint 19, two joints 19 that are separately positioned on standpipe sample assembly 6 two ends are rotationally connected by the piston 4 of a straight pin 20 with the axial loading cylinder 2 of respective end respectively.
In the foregoing description, the two ends of the bottom of standpipe sample assembly 6, the simulation soil body 10 are provided with spacer pad 21,4 in the piston that its role is to guide the end axially to load in the cylinder 2 produces axially-movable, avoids sealing to bear transverse force, limits the axial location of the simulation soil body 10 simultaneously.
In the foregoing description, can axially in the loading cylinder axial location ring 22 be set as required, its effect is an axial location of adjusting and limit standpipe sample assembly 6.
In the foregoing description, sample main body 7 two ends can be provided with a connection piece respectively, two web members form hinged with connecting rod 9 and piston 19 respectively by straight pin 8,20, form 4 bending dies under two horizontal servo loading cylinder 11,12 effects, the part sample main body 7 between two horizontal servo loading cylinders 11,12 is the simple bending tune.If only select a cylinder in the two horizontal servo loading cylinders 11,12 to act on the sample main body 7, then can produce the three-point bending effect.
In the foregoing description, according to physical performance indexs such as the elastoplasticity of the actual soil body, the adsorbability preparation simulation soil body 10, the effect of the simulation soil body 10 can adopt the motion control of horizontal servo loading cylinder 14 to realize, also can adopt the motion or the Load Control of the servo loading cylinder 13 of soil body effect to realize, the work number of the servo loading cylinder 13 of soil body effect can be selected for use according to the experiment needs.
The experimental implementation method of the utility model device is:
1) before standpipe sample assembly 6 is installed, open on the interior crimping mouth 17 of sample main body 7 in press vent plug, in sample main body 7, charge into liquid, treat that gas drains after, will in press vent plug and fasten.
2) standpipe sample assembly 6 is installed in the master cylinder tube 1, opens the air release 16 on the master cylinder tube 1, in master cylinder tube 1, charge into liquid, treat that gas drains after, air release 16 is fastened.
3) at first open the hydraulic control system that is connected with axial force interface 3, external pressure interface 15, interior crimping mouth 17, and in proportion pressure is applied to predetermined value, stable control.
4) open hydraulic servo control system, according to loading spectrum horizontal servo loading cylinder 11,12 shown in Figure 4 is carried out power control, thereby standpipe sample assembly 6 is applied the transverse curvature fatigue load; According to the standpipe characteristics of motion horizontal servo loading cylinder 14 is carried out displacement control, realize the dynamic action of the standpipe and the soil body, its action rule can be by the servo loading cylinder 13 feedback acquisition and recordings of soil body effect.
5) process in the step 4) also can so realize: open hydraulic servo control system, control horizontal servo loading cylinder 11,12 shown in Figure 4 being carried out power according to loading spectrum, standpipe sample assembly 6 is applied transverse curvature load, and horizontal servo loading cylinder 14 closed, the locking displacement, the pipeclay effect directly applies according to certain rule by the servo loading cylinder of soil body effect group 13 (optional).
6) strain of standpipe sample assembly 6, distortion can be passed through strain transducer, displacement transducer and corresponding instrument test collection, and the fatigue damage of analysis and judgement standpipe sample assembly 6.
7) generation of standpipe sample assembly 6 fatigue cracks can be judged in the variation test by standpipe sample assembly 6 inside and outside pressure reduction, after crackle appears in standpipe sample assembly 6, inside and outside gang up, pressure reduction is uncontrollable, can judge that crackle produces.
8) experiment finishes, and lays down pressure, load, and after the liquid in the master cylinder tube 1 drained, dismantles standpipe sample assembly 6 again.
The various embodiments described above only are used to illustrate the utility model; although the utility model is had been described in detail with reference to preferred embodiment; those skilled in the art are to be understood that; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement all should not got rid of outside protection domain of the present utility model.
Claims (10)
1. deep water standpipe fatigue test device is characterized in that: it comprises that a master cylinder tube, two axially loads cylinders, a standpipe test specimen assembly, some horizontal servo loading cylinders, the servo loading cylinders of some soil body effects;
Described master cylinder tube top one end is provided with an external pressure interface, and the other end is provided with an air release;
Described two axially load the two ends that cylinder is sealedly connected on described master cylinder tube respectively, are respectively arranged with an axial force interface on the two described axial loading cylinders;
Described standpipe sample assembly two ends are hinged on respectively on the piston of described axial loading cylinder of a corresponding side, and described standpipe sample assembly comprises a sample main body, and the connecting rod that is rotationally connected by straight pin with an end of described sample main body; Be provided with the simulation soil body between described sample lower body part and the described master cylinder tube; The two ends of described sample main body are respectively arranged with one and are communicated with inner interior crimping mouth; Described sample main body is provided with some displacement transducers and strain transducer, and the test lead of each described sensor passes described master cylinder tube and connects testing tool;
Described horizontal servo loading cylinder is arranged on the described master cylinder tube, wherein the piston crown of two described horizontal servo loading cylinders is at described sample main body top, and the piston crown of another described horizontal servo loading cylinder is in the bottom, straight pin junction of described sample main body and described connecting rod;
The servo loading cylinder of described soil body effect is arranged on the described master cylinder tube, and each piston crown on it is in the bottom of the described simulation soil body.
2. a kind of deep water standpipe fatigue test device as claimed in claim 1 is characterized in that: described axial force interface, external pressure interface, interior crimping mouth all are communicated with hydraulic control system by hydraulic path, and each described hydraulic path is provided with pressure transducer.
3. a kind of deep water standpipe fatigue test device as claimed in claim 1, it is characterized in that: each described horizontal servo loading cylinder and the servo loading cylinder of soil body effect all are communicated with hydraulic servo control system by hydraulic path, and each described hydraulic path is provided with pressure transducer.
4. a kind of deep water standpipe fatigue test device as claimed in claim 2, it is characterized in that: each described horizontal servo loading cylinder and the servo loading cylinder of soil body effect all are communicated with hydraulic servo control system by hydraulic path, and each described hydraulic path is provided with pressure transducer.
5. as claim 1 or 2 or 3 or 4 described a kind of deep water standpipe fatigue test devices, it is characterized in that: the joint of the described axial loading cylinder of described master cylinder tube and two ends is respectively arranged with external thread, and is integral by the clamp connection of a clasp nut formula respectively.
6. as claim 1 or 2 or 3 or 4 described a kind of deep water standpipe fatigue test devices, it is characterized in that: the described coupling arrangement between described standpipe sample assembly and the described axial loading cylinder comprises the joint that is separately positioned on described standpipe sample assembly two ends, and two described joints are connected by the piston rotation on the described axial loading cylinder of a straight pin and respective end respectively.
7. a kind of deep water standpipe fatigue test device as claimed in claim 5, it is characterized in that: the described coupling arrangement between described standpipe sample assembly and the described axial loading cylinder comprises the joint that is separately positioned on described standpipe sample assembly two ends, and two described joints are connected by the piston rotation on the described axial loading cylinder of a straight pin and respective end respectively.
8. as claim 1 or 2 or 3 or 4 or 7 described a kind of deep water standpipe fatigue test devices, it is characterized in that: the bottom of described standpipe sample assembly, described simulation soil body two ends are provided with spacer pad, and described two axially are provided with the axial location ring in the loading cylinder.
9. a kind of deep water standpipe fatigue test device as claimed in claim 5 is characterized in that: the bottom of described standpipe sample assembly, described simulation soil body two ends are provided with spacer pad, and described two axially are provided with the axial location ring in the loading cylinder.
10. a kind of deep water standpipe fatigue test device as claimed in claim 6 is characterized in that: the bottom of described standpipe sample assembly, described simulation soil body two ends are provided with spacer pad, and described two axially are provided with the axial location ring in the loading cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206460909U CN201965061U (en) | 2010-12-02 | 2010-12-02 | Device for fatigue test of deepwater riser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206460909U CN201965061U (en) | 2010-12-02 | 2010-12-02 | Device for fatigue test of deepwater riser |
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| CN201965061U true CN201965061U (en) | 2011-09-07 |
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| CN2010206460909U Expired - Lifetime CN201965061U (en) | 2010-12-02 | 2010-12-02 | Device for fatigue test of deepwater riser |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087183A (en) * | 2010-12-02 | 2011-06-08 | 中国海洋石油总公司 | Fatigue experiment device for deepwater stand pipe |
| CN103906995A (en) * | 2011-11-03 | 2014-07-02 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Inductive displacement sensor |
| CN107515150A (en) * | 2017-08-09 | 2017-12-26 | 中国石油大学(北京) | A kind of off-shore pipeline mechanical property integration test experimental provision |
| CN108051313A (en) * | 2017-11-15 | 2018-05-18 | 天津大学 | In-service deep seafloor buried pipeline earthquake-high pressure load combination loading experimental rig |
| CN109374428A (en) * | 2018-08-27 | 2019-02-22 | 南方科技大学 | A kind of flexible pipe cable Apparatus for Bending at low-temp |
| 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 |
-
2010
- 2010-12-02 CN CN2010206460909U patent/CN201965061U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087183A (en) * | 2010-12-02 | 2011-06-08 | 中国海洋石油总公司 | Fatigue experiment device for deepwater stand pipe |
| CN102087183B (en) * | 2010-12-02 | 2013-05-29 | 中国海洋石油总公司 | Fatigue experiment device for deepwater stand pipe |
| CN103906995A (en) * | 2011-11-03 | 2014-07-02 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Inductive displacement sensor |
| CN107515150A (en) * | 2017-08-09 | 2017-12-26 | 中国石油大学(北京) | A kind of off-shore pipeline mechanical property integration test experimental provision |
| CN107515150B (en) * | 2017-08-09 | 2020-04-07 | 中国石油大学(北京) | Comprehensive test experimental device for mechanical properties of marine pipeline |
| CN108051313A (en) * | 2017-11-15 | 2018-05-18 | 天津大学 | In-service deep seafloor buried pipeline earthquake-high pressure load combination loading experimental rig |
| CN109374428A (en) * | 2018-08-27 | 2019-02-22 | 南方科技大学 | A kind of flexible pipe cable Apparatus for Bending at low-temp |
| 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 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20130529 |
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| RGAV | Abandon patent right to avoid regrant |