CN107192606A - A kind of new ocean compliance umbilical stretching, compression and bending combined experimental device - Google Patents
A kind of new ocean compliance umbilical stretching, compression and bending combined experimental device Download PDFInfo
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- CN107192606A CN107192606A CN201710595250.8A CN201710595250A CN107192606A CN 107192606 A CN107192606 A CN 107192606A CN 201710595250 A CN201710595250 A CN 201710595250A CN 107192606 A CN107192606 A CN 107192606A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a kind of new ocean compliance umbilical stretching, compression and bending combined experimental device, including base and along the adjustable fixed dolly arranged in a straight line on the base and moving cart；The lower end of the adjustable fixed dolly is connected by toothed track with the base, and the sawtooth of the toothed track extends perpendicularly to the straight line, and the lower end of the adjustable fixed dolly has the flank of tooth matched with the toothed track；The lower end both sides of the moving cart are respectively equipped with multiple wheels, and the wheel is slidably connected by horizontal concrete chute with the base, the bearing of trend of the horizontal concrete chute and the straight line parallel.Nover practical of the present invention, only relies on hydraulic cylinder for power resources, you can realize kinds of experiments mode.Moreover, the application of respective load can be controlled effectively.Meanwhile, any conversion of loading sequence can be realized according to engineering and design requirement.
Description
Technical field
Large-scale elongated umbilical shape test specimen realization stretching, compression and bending combination can be added the present invention relates to a kind of new
The Mechanics Performance Testing device of load, specifically a kind of new ocean compliance umbilical stretching, compression and bending combination are real
Experiment device.
Background technology
China's Marine oil and gas resource rich reserves, and most of it is distributed in the deep water sea areas such as the South Sea.And extra large cable, umbilical cables with
And flexible duct etc. is one of indispensable equipment in deep-sea oil gas exploitation.This kind of equipment can be collectively referred to as ocean compliance pipe
Cable, its structure is generally made up of corresponding building blocks of function and stiffener such as armouring wire etc..For different engineering demands, choosing
With the umbilical of corresponding function；Extra large cable is mainly responsible for seabed production equipment and provides electric energy, and umbilical cables are connected to water floating body and sea
Between the equipment of bottom, provide electric power, signal transmission etc. for seabed manifold and realize remote control, flexible duct is mainly responsible between equipment
Oil-gas transportation.Ocean flexible pipe cable is in installation or operating mode in place, it will usually be stretched bending combined load.Due to soft
Pliable umbilical is from as complicated spiral winding structure, and mutual friction behavior between bending load lower member is by obvious under tension
The influence of size, the mechanical behavior of its umbilical will be extremely complex.Simultaneously as the effect of stormy waves stream, and platform is in Complex Sea
The behavior of alternating bending will be presented in reciprocating motion under foreign environment, the umbilical for being connected to floating body, and then produces fatigue damage, causes
Fatigue rupture.Fatigue directly concerns the service life of umbilical, moreover, the service life of umbilical is major manufacturers and design machine
One of most concerned performance parameter of structure, therefore, the research of umbilical fatigue problem are very important important in umbilical design cycle
Link.In addition, the flexible pipe cable run in place bears obvious compression load at touchdown point, armouring easily occurs when serious and bends
Song failure, bigger difficulty is brought to repair.In summary, stretch, compression and bending are that ocean compliance umbilical is held
The typical duty load received.
In view of the above-mentioned problems, theoretical and numerical method is often difficult to umbilical agenda under the accurate description combined load.
Therefore, in order to study the structural response after the above-mentioned mechanical behavior of umbilical, and fatigue failure mechanism and failure in detail, it is necessary to logical
Overtesting method to carry out independent load or combined load simulated experiment to the dangerous section of ocean flexible pipe cable.And then pass through experiment
To optimize the design of structure, the probability destroyed during reduction umbilical use ensures whole umbilical service life.Flexible pipe cable
Combined load test is the important test to pipe applications situation, because the research of domestic flexible pipe cable is still in starting state,
Without the experiment experience under related pure bending and combined load, need a set of complete experimental provision badly and umbilical is tested and tested
Card.
The content of the invention
According to technical problem set forth above, and a kind of new ocean compliance umbilical stretching, compression are provided and bent
Combined experimental device.The mechanical behavior feature and fatigue failure mechanism of umbilical can be studied by the present invention, so that comprehensively
The experiment key technology of dynamic standpipe cable is grasped, while can be carried out to the correlation performance parameters (rigidity, intensity and fatigue) of umbilical
Optimization design.
According to actual condition, using the equivalent method of load, umbilical is carried out repeatedly in the range of certain bending radius curved
Song, and stretching and compression combined load.Therefore testing equipment needs to bring it about comprising stretching, compression device and application moment of flexure
The equipment of oscillation cycle flexural deformation.In addition, experimentation need configure measuring apparatus, such as foil gauge or sensor with
Just umbilical deformation process relevant parameter index (middle or direct physical quantity) is extracted.Experiment flow is generally as follows：Sampling,
Fixation, pieces of cloth, loading, measurement and post processing mode expansion.Experiment will formulate corresponding testing scheme and to umbilical sample before starting
Chosen, then umbilical to be tested is fixed on test stand, foil gauge cloth is carried out in test position according to requirement of experiment
Put, and be coupled with data acquisition equipment.The errorless rear start-up loading equipment of aforesaid operations is ensured, while gathering dependency number in real time
According to.Finally, the data obtained is analyzed and processed and forms perfect laboratory report.
The technological means that the present invention is used is as follows：
A kind of new ocean compliance umbilical stretching, compression and bending combined experimental device, including base and along straight
Line is arranged in adjustable fixed dolly and moving cart on the base；
The lower end of the adjustable fixed dolly is connected by toothed track with the base, and the sawtooth of the toothed track prolongs
Direction is stretched perpendicular to the straight line, and the lower end of the adjustable fixed dolly has the flank of tooth matched with the toothed track, institute
Adjustable fixed dolly is stated provided with two the first supporting plates and the first slideway parallel to each other, first slideway is located at two institutes
State between the first supporting plate, first slideway is along the linear extension, and first slideway is provided with the first rack, it is described can
Adjust and be additionally provided with the first hydraulic cylinder for promoting first rack to be slided along first slideway, two described first on fixed dolly
Provided with the first cylindrical bending apparatus between the upper end of supporting plate, the two ends of the described first cylindrical bending apparatus have the respectively
One connecting flange faces, the both sides side wall of the described first cylindrical bending apparatus is revolved by the first rotary shaft and first supporting plate
Turn connection, the downside side wall of the described first cylindrical bending apparatus is fixed with the first sector gear, first sector gear
The engagement of sawtooth and first rack；
The lower end both sides of the moving cart are respectively equipped with multiple wheels, and the wheel is slided by horizontal concrete chute and the base
Connection, the bearing of trend of the horizontal concrete chute and the straight line parallel, the moving cart is provided with two parallel to each other the
Two supporting plates and the second slideway, second slideway are located between two second supporting plates, and second slideway is described in
Linear extension, second slideway, which is provided with the second rack, the moving cart, is additionally provided with promotion second rack along institute
State between the second hydraulic cylinder of the second slideway slip, the upper end of two second supporting plates provided with the second cylinder bending dress
Put, the two ends of the described second cylindrical bending apparatus have the second connecting flange faces, the described second cylindrical bending apparatus respectively
Both sides side wall be rotatably connected by the second rotary shaft with second supporting plate, the downside of the second cylindrical bending apparatus
Side wall is fixed with the second sector gear, the engagement of the sawtooth of second sector gear and second rack；
Axis of the axis of described first cylindrical bending apparatus perpendicular to first rotary shaft；
Axis of the axis of described second cylindrical bending apparatus perpendicular to second rotary shaft；
The axis of described first cylindrical bending apparatus and the intersection point of the axis of first rotary shaft and second circle
The intersection point of the axis of cylindrical bending device and the axis of second rotary shaft is located in the same horizontal plane, i.e., highly consistent, is made
After relative the first connecting flange faces and the second connecting flange faces are connected with the two ends of umbilical respectively, umbilical can be in level；
It is additionally provided with the 3rd hydraulic cylinder for promoting the moving cart to be slided along the horizontal concrete chute on the base, described the
The one end of three hydraulic cylinders away from the moving cart is connected by fixed wall with the base.
The base includes being provided with the toothed track, the horizontal concrete chute, the 3rd hydraulic cylinder and the fixed wall
Above plate and lower panel, between the top panel and the lower panel be provided with truss.
The axial location of described first cylindrical bending apparatus and the second cylindrical bending apparatus is equipped with center and led to
Hole, the one end of the first cylindrical bending apparatus away from the described second cylindrical bending apparatus is provided with first flange, and described the
The one end of two cylindrical bending apparatus away from the described first cylindrical bending apparatus is provided with second flange
During work, the first relative connecting flange faces and the second connecting flange faces are connected with the two ends of umbilical respectively；
3rd hydraulic cylinder drives the moving cart to be moved horizontally on the horizontal concrete chute, so make umbilical by
To stretching action；The first hydraulic cylinder and the second hydraulic cylinder drive first sector gear and described the simultaneously respectively
Two sector gear opposite direction rotatings rotate round about, so that umbilical is by flecition, now, the vertical position in umbilical two ends
Shifting is zero；
To adapt to the umbilical of different length, the adjustable fixed dolly realizes position adjustments by the toothed track；Institute
It can prevent contact surface from getting rusty with coating butter between the lower end flank of tooth and the toothed track of stating adjustable fixed dolly；
Carry out crooked experiment when, the first hydraulic cylinder and the second hydraulic cylinder is synchronously applied load, it is ensured that umbilical by
Pure bending is acted on, and can be realized by programming tuning controller；
It can be applied between first slideway and first rack and between second slideway and second rack
Smear butter, it is ensured that slip is smooth, realize effective transmission of power, and then reduce experimental error.
It is as follows that method of testing is carried out using the experimental provision：
1. according to the length of umbilical to be measured, adjustable fixed dolly is fixed on to the correct position in toothed track；
2. the first rack is connected with first hydraulic cylinder, the second rack is connected with second hydraulic cylinder, it is ensured that both are in fortune
Relative displacement can not occur when dynamic；
3. the first relative connecting flange faces and the second connecting flange faces are connected with the two ends of umbilical respectively, it is ensured that umbilical water
It is flat, and without preloading；
4. according to requirement of experiment, foil gauge is pasted in umbilical surface appropriate location.Foil gauge can be bonded in pipe with glue
Inside cable in respective members (steel pipe, carcass layer steel wire), internal winding displacement passes through the first cylindrical bending apparatus and the second cylinder
The central through hole of shape bending apparatus is drawn.The first cylinder is fixed in the winding displacement one end for being connected to foil gauge with adhesive tape simultaneously curved
Bent device and the second cylindrical bending apparatus, prevent from test process causing the fluctuation of test data because winding displacement is rocked,
The other end is connected to acquisition system, realizes strain data real-time Transmission；
5. first hydraulic cylinder and second hydraulic cylinder are connected on same controller, the first hydraulic pressure can be made by controller
Cylinder and second hydraulic cylinder are coordinated to apply load, make umbilical by expected flecition；
6. after the completion of whole experimental provision is built, preliminary debugging is first carried out to whole test system.Pass through each hydraulic cylinder
Driving is loaded by a small margin to umbilical, the curve that the strain that analysis is gathered is changed over time.After test request to be achieved, it can divide
Group carries out experiment；
7. controlling first hydraulic cylinder and second hydraulic cylinder, a variety of load modes such as realization distribution, synchronous pass through three hydraulic pressure
Cylinder sets the stretching, compression or bending combination loading of different proportion；
8. when being stretched or during compression experiment, by controlling the 3rd hydraulic cylinder, stretching and compression experiment that pipe pulls are realized；
When carrying out crooked experiment, by controlling first hydraulic cylinder and second hydraulic cylinder, the alternating bending test that pipe is pulled is realized；Work as progress
When stretching, compression and bending combination experiment, by controlling three hydraulic cylinders, the combination experiment that pipe is pulled is realized；
9. the power that record first hydraulic cylinder and second hydraulic cylinder are applied, the first sector gear of measurement and the second sector gear
Radius, the moment of flexure that must can be put in umbilical；Meanwhile, the horizontal pull that the 3rd hydraulic cylinder of record is applied；
10. many times are tested and simultaneously the data collected are counted and error analysis, rational test result and most is provided
End form is reported into full experiment.
The present invention proposes a kind of new to make umbilical be stretched, compress or bend and combined load is while the reality acted on
Experiment device, Detailed Experimental method need to be determined according to experimental provision and experiment condition.
The present invention has the advantage that：
1. Nover practical of the present invention, only relies on hydraulic cylinder for power resources, you can realize kinds of experiments mode.Moreover, energy
Enough effectively control the application of respective load.Meanwhile, any conversion of loading sequence can be realized according to engineering and design requirement.
2. for different length umbilical, the position adjustments of adjustable fixed dolly can be realized by toothed track, the present invention
With superior flexibility.
3. in umbilical BENDING PROCESS, the requirement of experiment of pure bending can be achieved by identical Moment in umbilical two ends, and logical
Cross the moment of flexure that hydraulic cylinder put on umbilical sample relatively stable, facilitate later data to record and handle.
4. the base of the present invention is constituted using truss structure and steel plate, load-bearing is big, and saves steel, is ensureing integral rigidity
With overall structure weight is efficiently reduced on the premise of intensity.The features such as with designability, economy.
5. the umbilical of the suitable different lengths of the present invention, load mode meets the reality during the compliance umbilical use of ocean
Working condition requirement, umbilical actual loading behavior situation can be reacted well.
6. three hydraulic cylinder power resources of the present invention, record data is convenient, and calculates the calculation of Bending Moment for putting on umbilical
Formula is simple, easily calculates and operates.
7. will be sealed on the left of the first cylindrical bending apparatus using first flange, applied on the right side of the second cylindrical bending apparatus
Plus interior compression testing device, test can be applied internal pressure to umbilical.
8. because the axial location of the first cylindrical bending apparatus and the second cylindrical bending apparatus is equipped with central through hole,
Test device can be put into umbilical by central through hole, compared to contact bend testing apparatus, can ring without dead angle measure
Strain, can more accurately test umbilical performance.
9. umbilical surrounding space is larger, convenient addition corresponding instrument is recorded to umbilical deformation measurement.For the foregoing reasons originally
Invention can be widely popularized in fields such as experiment tests.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to do simply to introduce, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of new ocean compliance umbilical stretching, compression and bending group in embodiment of the invention
Close the space structure schematic diagram of experimental provision.
Fig. 2 is the second cylindrical bending apparatus, the second sector gear and second flange in embodiment of the invention
Assembling schematic diagram.
Fig. 3 is Fig. 2 right view.
Fig. 4 is Fig. 2 left view.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As Figure 1-Figure 4, a kind of new ocean compliance umbilical 31 stretches, compresses and bent combined experimental device,
Including base 1 and along the adjustable fixed dolly 2 arranged in a straight line on the base 1 and moving cart 3；
The lower end of the adjustable fixed dolly 2 is connected by toothed track 4 with the base 1, the saw of the toothed track 4
Tooth extends perpendicularly to the straight line, and the lower end of the adjustable fixed dolly 2 has the tooth matched with the toothed track 4
Face, the adjustable fixed dolly 2 is provided with two the first supporting plates 5 and the first slideway 6 parallel to each other, first slideway 6
Between two first supporting plates 5, first slideway 6 is along the linear extension, and first slideway 6 is provided with the
The first liquid for promoting first rack 7 to be slided along first slideway 6 is additionally provided with one rack 7, the adjustable fixed dolly 2
Provided with the first cylindrical bending apparatus 9 between cylinder pressure 8, the upper end of two first supporting plates 5, the first cylinder bending
The two ends of device 9 have the first connecting flange faces 10 respectively, and the both sides side wall of the described first cylindrical bending apparatus 9 passes through first
Rotary shaft 11 is rotatably connected with first supporting plate 5, and the downside side wall of the described first cylindrical bending apparatus 9 is fixed with first
Sector gear 12, the engagement of the sawtooth of first sector gear 12 and first rack 7；
The lower end both sides of the moving cart 3 be respectively equipped with it is multiple wheel 13, it is described wheel 13 by horizontal concrete chute 14 with it is described
Base 1 is slidably connected, and bearing of trend and the straight line parallel of the horizontal concrete chute 14, the moving cart 3 are provided with two
Second supporting plate 15 parallel to each other and the second slideway 16, second slideway 16 be located at two second supporting plates 15 it
Between, second slideway 16 is provided with the second rack 17, the moving cart 3 along the linear extension, second slideway 16
On be additionally provided with the second hydraulic cylinder 18 for promoting second rack 17 to be slided along second slideway 16, two described second support
Provided with the second cylindrical bending apparatus 19 between the upper end of plate 15, the two ends of the described second cylindrical bending apparatus 19 have respectively
Second connecting flange faces 20, the both sides side wall of the described second cylindrical bending apparatus 19 passes through the second rotary shaft 21 and described second
Supporting plate 15 is rotatably connected, and the downside side wall of the described second cylindrical bending apparatus 19 is fixed with the second sector gear 22, described
The engagement of the sawtooth of second sector gear 22 and second rack 17；
Axis of the axis of described first cylindrical bending apparatus 9 perpendicular to first rotary shaft 11；
Axis of the axis of described second cylindrical bending apparatus 19 perpendicular to second rotary shaft 21；
The intersection point and described second of the axis and the axis of first rotary shaft 11 of described first cylindrical bending apparatus 9
The intersection point of the axis of cylindrical bending apparatus 19 and the axis of second rotary shaft 21 is located in the same horizontal plane；
The 3rd hydraulic cylinder 23 for promoting the moving cart 3 to be slided along the horizontal concrete chute 14 is additionally provided with the base 1,
The described one end of 3rd hydraulic cylinder 23 away from the moving cart 3 is connected by fixed wall 24 with the base 1.
The base 1 is included provided with the toothed track 4, the horizontal concrete chute 14, the 3rd hydraulic cylinder 23 and described
Plate 25 and lower panel 26 above fixed wall 24, are provided with truss 27 between the top panel 25 and the lower panel 26.
The axial location of described first cylindrical bending apparatus 9 and the second cylindrical bending apparatus 19 is equipped with center
Through hole 28, the described first cylindrical left side of bending apparatus 9 is sealed using first flange 29, in the described second cylindrical bending apparatus
19 right sides apply internal pressure test device, and internal pressure test, or the described second cylindrical right side of bending apparatus 19 can be carried out to umbilical 31
Sealed using second flange 30, apply internal pressure test device in the described first cylindrical left side of bending apparatus 9, umbilical 31 can be entered
Row internal pressure is tested.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (3)
1. a kind of new ocean compliance umbilical stretching, compression and bending combined experimental device, it is characterised in that including base
And along the adjustable fixed dolly arranged in a straight line on the base and moving cart；
The lower end of the adjustable fixed dolly is connected by toothed track with the base, the sawtooth extension side of the toothed track
To perpendicular to the straight line, the lower end of the adjustable fixed dolly has a flank of tooth matched with the toothed track, it is described can
Fixed dolly is adjusted provided with two the first supporting plates and the first slideway parallel to each other, first slideway is located at two described the
Between one supporting plate, first slideway is along the linear extension, and first slideway is provided with the first rack, described adjustable solid
Determine to be additionally provided with the first hydraulic cylinder for promoting first rack to slide along first slideway on dolly, two first supports
Provided with the first cylindrical bending apparatus between the upper end of plate, the two ends of the described first cylindrical bending apparatus have first to connect respectively
Acting flange face, the both sides side wall of the described first cylindrical bending apparatus is rotated by the first rotary shaft and first supporting plate to be connected
Connect, the downside side wall of the described first cylindrical bending apparatus is fixed with the first sector gear, the sawtooth of first sector gear
With the engagement of first rack；
The lower end both sides of the moving cart are respectively equipped with multiple wheels, and the wheel is slided by horizontal concrete chute and the base to be connected
Connect, the bearing of trend of the horizontal concrete chute and the straight line parallel, the moving cart are provided with two parallel to each other second
Supporting plate and the second slideway, second slideway are located between two second supporting plates, and second slideway is along described straight
Line extends, and second slideway, which is provided with the second rack, the moving cart, is additionally provided with promotion second rack described in
Provided with the second cylindrical bending apparatus between the second hydraulic cylinder that second slideway is slided, the upper end of two second supporting plates,
The two ends of described second cylindrical bending apparatus have the second connecting flange faces, the two of the described second cylindrical bending apparatus respectively
Side side wall is rotatably connected by the second rotary shaft with second supporting plate, the downside side wall of the described second cylindrical bending apparatus
It is fixed with the second sector gear, the engagement of the sawtooth of second sector gear and second rack；
Axis of the axis of described first cylindrical bending apparatus perpendicular to first rotary shaft；
Axis of the axis of described second cylindrical bending apparatus perpendicular to second rotary shaft；
The axis of described first cylindrical bending apparatus and the intersection point of the axis of first rotary shaft and second cylinder
The intersection point of the axis of bending apparatus and the axis of second rotary shaft is located in the same horizontal plane；
The 3rd hydraulic cylinder for promoting the moving cart to be slided along the horizontal concrete chute, the 3rd liquid are additionally provided with the base
The one end of cylinder pressure away from the moving cart is connected by fixed wall with the base.
2. a kind of new ocean compliance umbilical stretching, compression and bending combined experimental device according to claim 1,
It is characterized in that：The base includes being provided with the toothed track, the horizontal concrete chute, the 3rd hydraulic cylinder and the fixation
Plate and lower panel above wall, are provided with truss between the top panel and the lower panel.
3. a kind of new ocean compliance umbilical stretching, compression and bending combined experimental device according to claim 1,
It is characterized in that：The axial location of described first cylindrical bending apparatus and the second cylindrical bending apparatus is equipped with center
Through hole, the one end of the described first cylindrical bending apparatus away from the described second cylindrical bending apparatus is provided with first flange, described
The one end of second cylindrical bending apparatus away from the described first cylindrical bending apparatus is provided with second flange.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595250.8A CN107192606B (en) | 2017-07-20 | 2017-07-20 | Marine flexible pipe cable stretching, compressing and bending combined experimental device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595250.8A CN107192606B (en) | 2017-07-20 | 2017-07-20 | Marine flexible pipe cable stretching, compressing and bending combined experimental device |
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| CN107192606B CN107192606B (en) | 2023-06-16 |
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| CN108037018A (en) * | 2017-12-23 | 2018-05-15 | 宁波沈南知识产权运营有限公司 | A kind of stretching capacity checking device for adapting to different thicknesses wire jumper |
| CN108181177A (en) * | 2017-10-30 | 2018-06-19 | 武汉船用机械有限责任公司 | A kind of device for testing tensile force and test method |
| CN108287115A (en) * | 2018-02-13 | 2018-07-17 | 大连理工大学 | The test method and device that non-adherent umbilical armor prestressing force influences bending property |
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