CN201795915U - Mechanical loading analog device for slope seabed pipeline on-bottom stability - Google Patents
Mechanical loading analog device for slope seabed pipeline on-bottom stability Download PDFInfo
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- CN201795915U CN201795915U CN2010205291674U CN201020529167U CN201795915U CN 201795915 U CN201795915 U CN 201795915U CN 2010205291674 U CN2010205291674 U CN 2010205291674U CN 201020529167 U CN201020529167 U CN 201020529167U CN 201795915 U CN201795915 U CN 201795915U
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- soil body
- drag
- model pipeline
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Abstract
The utility model relates to a mechanical loading analog device for slope seabed pipeline on-bottom stability, which comprises a transparent soil bin, wherein a soil body with an oblique upper surface is arranged in the soil bin, and a model pipeline is laid on the upper surface of the soil body; a mechanical loading device for exerting pull force is arranged on the model pipeline; and a pull force sensor, a vertical laser displacement sensor and a parallel laser displacement sensor are arranged on the mechanical loading device. The mechanical loading analog device for the slope seabed pipeline on-bottom stability is ingenious in structural design, convenient in operation and easy in realization, and can be extensively applied in the process of analog measurement of the slope seabed pipeline on-bottom stability.
Description
Technical field
The utility model relates to offshore engineering, marine soil mechanics, submarine pipeline engineering etc., particularly about the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope.
Background technology
Submarine pipeline is an effective tool of carrying oil gas in the marine petroleum development process.Under current load, vertical with slope sea bed vergence direction on the sea bed of slope, the pipeline that level is laid will be subjected to being parallel to the drag of sea bed and perpendicular to the hydrodynamism of the lift of sea bed; Simultaneously, its below soil body holding power and resistance on the throne perpendicular to sea bed of providing also is provided pipeline, and the effect of self gravitation, and when soil body resistance on the throne is not enough to drag that the balance ocean current causes, pipeline will produce big horizontal shift and unstability.On the sea bed of slope with the pipeline of slope sea bed vergence direction parallel laid, because the effect of self gravitation, existence is to the trend of lower slider, pipeline is subjected to deadweight, below soil body holding power and pipe-native friction force effect, when pipe-native friction force is not enough to the equalizing main deadweight, need on pipeline, apply an extra pulling force, when this pulling force acquires a certain degree, may cause pipeline to damage.This shows, directly be layed in the submarine pipeline on the sea bed, the stability on the throne under marine environment load, can be related to piping system normally run, therefore, simulate pipeline before the tubing at the force-bearing situation in seabed and verify that its stability on the throne is particularly important.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope, and this device can be simulated under the current load, the stability on the throne of the force-bearing situation of pipeline and checking pipeline on the sea bed of slope.
For achieving the above object, the utility model is taked following technical scheme: the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope, it is characterized in that: it comprises a transparent soil box, be provided with the soil body that a upper surface tilts in the described soil box, described soil body upper surface is equipped with a model pipeline; Described model pipeline is provided with a machinery loading device that is used to apply pulling force; Described machinery loading device be provided with pulling force sensor, with the vertical vertical laser displacement sensor of soil body upper surface, the parallel laser displacement transducer parallel with soil body upper surface.
Described model pipeline is vertical with the vergence direction of the described soil body, level is laid on described soil body upper surface, described machinery loading device comprises the vertical supporting construction that is separately positioned on the described soil box two opposite side walls, two described supporting constructions be provided with one be positioned at described model pipeline top and with the parallel cant beam of described soil body upper surface; Described cant beam bottom surface is provided with sliding rail, and described sliding rail is provided with a slide block; Described parallel laser displacement transducer is arranged on the described supporting construction of the high origin or beginning of the described soil body, and described vertical laser displacement sensor is arranged on the bottom surface of described cant beam; Described slide block vertically is provided with the drag-line of the described model pipeline two axial ends of two connections, each drag-line is provided with a described pulling force sensor, described slide block is provided with another drag-line along described cant beam direction, this drag-line is by being successively set on two fixed pulleys on the described supporting construction, and connection one is arranged on the motor of described soil box outside.
Described two fixed pulleys are separately positioned on the described supporting construction of the high origin or beginning of the described soil body.
Described two fixed pulleys are separately positioned on the described supporting construction of described soil body low side.
The sliding rail of described slide block moving direction rear end is provided with an anti-rolling device, and the other end of described anti-rolling device connects described model pipeline both ends of the surface respectively.
Described model pipeline is consistent with the vergence direction of the described soil body, be laid on described soil body upper surface, described machinery loading device comprises that one is arranged on the crossbeam at described soil box top, be arranged on the supporting construction on the described soil box sidewall, described parallel laser displacement transducer is arranged on the described supporting construction of the high origin or beginning of the described soil body, and described vertical laser displacement sensor is arranged on the bottom surface of described crossbeam; Described model pipeline end is provided with a drag-line, and described drag-line connects the motor that is arranged on described soil box outside by the fixed pulley that is arranged on the described supporting construction; Drag-line between described model pipeline and the described fixed pulley is provided with described pulling force sensor.
Described drag-line is arranged on the upper end of described model pipeline, and described fixed pulley is arranged on the described supporting construction of the high origin or beginning of the described soil body.
Described drag-line is arranged on the bottom of described model pipeline, and described fixed pulley is arranged on the described supporting construction of described soil body low side.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is owing to carry out simulation test in soil box, and sidewall adopts transparent tempered glass to make around the soil box, therefore, can be so that in the measuring process, observe the situation of soil box inner model pipeline.2, the utility model is because vertical with the vergence direction of soil body upper surface, when level is laid model pipeline, can be provided for measuring the vertical laser displacement sensor of vertical deviation in the cant beam bottom surface, between model pipeline and slide block, pulling force sensor is set, on supporting construction, be provided for measuring parallel laser displacement transducer along slope direction displacement, therefore, can analyze the steadiness of submarine pipeline by the measurement data of the said equipment.3, the utility model is vertical with the vergence direction of soil body upper surface, when level is laid model pipeline, can anti-rolling device be set in the model pipeline both sides, translation only takes place with the analogy model pipeline when the unstability, and situation about not rotating; Also anti-rolling device can be set, when the unstability, the situation with translation take place freely to rotate with the analogy model pipeline.4, the utility model is because consistent with the vergence direction of soil body upper surface, when laying model pipeline, be provided for measuring the vertical laser displacement sensor of vertical deviation in the crossbeam bottom surface, on the drag-line of pulling model pipeline, pulling force sensor is set, on supporting construction, be provided for measuring horizontal laser light displacement transducer along slope direction displacement, therefore, can analyze the antiskid dynamic resistance and the steadiness of submarine pipeline by the measurement data of the said equipment.5, the utility model can be by being arranged on the motor of soil box outside, and model pipeline is applied up or down pulling force, therefore, can be used for simulating the ocean current that upwards flows along the slope sea bed horizontal drag and the vertical lift to pipeline.The utility model structural design is ingenious, and is easy to operate, is easy to realize, can be widely used in the analogue measurement process of pipeline stability on the throne on the sea bed of slope.
Description of drawings
Fig. 1 is the utility model device operation scheme one structural representation
Fig. 2 is the utility model device operation scheme two structural representations
Fig. 3 is the utility model device operation scheme three structural representations
Fig. 4 is the utility model device operation scheme four structural representations
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
Shown in Fig. 1～4, device of the present utility model comprises a soil box 1, and sidewall is transparent tempered glass around the soil box 1.Preset the soil body 2 that a upper surface has certain angle of inclination in the soil box 1, be used for the analog ramp sea bed.The soil body 2 upper surfaces are equipped with a model pipeline 3; Model pipeline 3 is provided with a machinery loading device that is used to apply pulling force; Machinery loading device be provided with pulling force sensor 4, with the vertical vertical laser displacement sensor 5 of the soil body 2 upper surfaces, the parallel laser displacement transducer 6 parallel with the soil body 2 upper surfaces.
As shown in Figure 1 and Figure 2, when model pipeline 3 vertical with the vergence direction of the soil body 2 upper surfaces, when level is laid on the soil body 2 upper surfaces, machinery loading device comprises that vertical supporting construction 7, two supporting constructions 7 that are separately positioned on soil box 1 two opposite side walls are provided with one and are positioned at model pipeline 3 tops and the cant beam 8 parallel with the soil body 2 upper surfaces; Cant beam 8 bottom surfaces are provided with sliding rail, and sliding rail is provided with a slide block 9.Slide block 9 vertically is provided with the drag-line 10 of two link model pipelines, 3 two axial ends, and pulling force sensor 4 is arranged on each drag-line 10 between model pipeline 3 and the slide block 9.Slide block 9 is provided with another drag-line 11 along cant beam 8 directions, and drag-line 11 is by being successively set on two fixed pulleys 12 on the supporting construction 7, and connection one is arranged on the motor 13 of soil box 1 outside.Vertical laser displacement sensor 5 is arranged on the bottom surface of cant beam 8, and parallel laser displacement transducer 6 is arranged on the supporting construction 7 of the soil body 2 high origin or beginnings.
In the foregoing description, model pipeline 3 can rotate and translation along the soil body 2 upper surfaces, in order to prevent model pipeline 3 rotations, can be provided with an anti-rolling device 14 on the sliding rail of slide block 9 moving direction rear ends, the other end of anti-rolling device 14 is link model pipeline 3 both ends of the surface respectively.
In the foregoing description, as shown in Figure 1, two fixed pulleys 12 can be separately positioned on the supporting construction 7 of the soil body 2 high origin or beginning one sides, apply the oblique pulling that makes progress along the soil body 2 upper surfaces by 11 pairs of model pipeline 3 of drag-line.
In the foregoing description, as shown in Figure 2, two fixed pulleys 12 can be separately positioned on the supporting construction 7 of the soil body 2 low sides one side, apply along the downward oblique pulling of the soil body 2 upper surfaces by 11 pairs of model pipeline 3 of drag-line.
As shown in Figure 3, Figure 4, when model pipeline 3 consistent with the vergence direction of the soil body 2 upper surfaces, when being laid on the soil body 2 upper surfaces, machinery loading device comprises that one is arranged on the crossbeam 15 at soil box 1 top, be arranged on the supporting construction 7 on soil box 1 sidewall, parallel laser displacement transducer 6 is arranged on the supporting construction 7 of the soil body 2 high origin or beginnings, and vertical laser displacement sensor 5 is arranged on the bottom surface of crossbeam 15; Model pipeline 3 ends are provided with a drag-line 16, and drag-line 16 connects the motor 13 that is arranged on soil box 1 outside by the fixed pulley 12 that is arranged on the supporting construction 7; Pulling force sensor 4 is arranged on the drag-line 16 between model pipeline 3 and the fixed pulley 12.
In the foregoing description, as shown in Figure 3, only the soil body 2 high origin or beginning one sides are provided with a supporting construction 7, and drag-line 16 is arranged on the upper end of model pipeline 3, and fixed pulley 12 is arranged on this supporting construction 7.
In the foregoing description, as shown in Figure 4, the soil body 2 high origin or beginnings and low side are respectively arranged with a supporting construction 7, and drag-line 16 is arranged on the bottom of model pipeline 3, and fixed pulley 12 is arranged on the supporting construction 7 of the soil body 2 low sides one side.
In the foregoing description, soil box 1 outside can also be provided with a particle image velocimeter, can test model pipeline 3 belows by particle image velocimeter, and the displacement of soil particle, speed and other data.
In the foregoing description, motor 13 can be a stepper motor, also can be servomotor.
The utility model device mainly comprises following four kinds of operation schemes.
The side's of operation example one, as shown in Figure 1, it may further comprise the steps:
1) adopts sand rain legal system to be equipped with the soil body 2, make the soil body 2 upper surfaces reach given angle of inclination, with the analog ramp sea bed.
2) vergence direction with the soil body 2 upper surfaces is vertical, lay model pipeline 3 in the soil body 2 upper surface levels, when model pipeline 3 has just contacted with the soil body 2 upper surfaces, discharging model pipeline 3 makes it produce initial settlement at the soil body 2 upper surfaces, start the vertical laser displacement sensor 5 of cant beam 8 bottoms simultaneously, by vertical laser displacement sensor 5, measurement model pipeline 3 is at the initial settlement amount of the soil body 2 upper surfaces, the i.e. vertical deviation of model pipeline 3.
3) at model pipeline 3 two ends anti-rolling device 14 is set respectively, when the unstability, translation only takes place along the soil body 2 upper surfaces with analogy model pipeline 3, and situation about not rotating; Anti-rolling device 14 perhaps is not set, directly apply pulling force in model pipeline 3 two axial ends in the heart, can analogy model pipeline 3 when unstability, situation with translation takes place freely to rotate along the soil body 2 upper surfaces.
4) open motor 13 (displacement control: given motor 13 rotating speeds), the drag-line 11 that is provided with by slide block 9 oblique uppers spurs model pipeline 3, model pipeline 3 is applied mechanical oblique pulling, the ocean current that upwards flows along the slope sea bed with simulation is to the horizontal drag and the vertical lift of pipeline, the tilt adjustable of pulling force, the horizontal drag that pipeline is applied with the simulation ocean current and the different ratios of vertical lift.
5) by being arranged on the pulling force sensor 4 on the drag-line 10 between model pipeline 3 and the slide block 9, measure the pulling force that is applied on the model pipeline 3; By being arranged on the parallel laser displacement transducer 6 on the supporting construction 7, in the measurement model pipeline 3 unstability processes on the throne, be parallel to the displacement of the soil body 2 upper surface vergence directions; By being arranged on the vertical laser displacement sensor 5 of cant beam 8 bottoms, in the measurement model pipeline 3 unstability processes on the throne, at the subsequent settlement of the soil body 2 upper surfaces, i.e. vertical deviation.
6), change the weight under water of the model pipeline 3 of unit length, return step 2 by the increase and decrease balancing weight) carry out the sunykatuib analysis of different model pipeline 3 weight.
7) can analyze the steadiness of different submarine pipelines by all data of measuring in the above-mentioned steps.
The side's of operation example two is with the difference of operation side's example one: as shown in Figure 2, in the step 4), open motor 13, the drag-line 11 that is provided with by slide block 9 oblique belows spurs model pipeline 3, model pipeline 3 is applied mechanical oblique pulling, the ocean current that flows downward along the slope sea bed with simulation is to the horizontal drag and the vertical lift of pipeline, the tilt adjustable of pulling force, the horizontal drag that pipeline is applied with the simulation ocean current and the different ratios of vertical lift.
In aforesaid operations side's example one and operation side's example two, owing to be used for the parallel laser displacement transducer 6 and the vertical laser displacement sensor 5 of 3 parallel displacements of measurement model pipeline and vertical deviation, be positioned on the water surface, therefore, the attached reference substance that is higher than the water surface can be set on the anti-rolling device 14 at model pipeline 3 two ends, by measuring attached reference substance, and then obtain the parallel displacement and the vertical deviation of the following model pipeline 3 of the water surface along the displacement of soil body upper surface direction with perpendicular to the displacement of soil body upper surface.
In the step 5) in aforesaid operations side's example one and the operation side example two, can also be by being arranged on the particle image velocimeter of soil box 1 outside, through in the wall measurement model pipeline 3 unstability processes on the throne of transparent limit, below displacement field on the soil body 2.
The side's of operation example three: as shown in Figure 3, it may further comprise the steps:
1) adopts sand rain legal system to be equipped with the soil body 2, make the soil body 2 upper surfaces reach given angle of inclination, with the analog ramp sea bed.
2) consistent with the vergence direction of the soil body 2 upper surfaces, lay model pipeline 3 at the soil body 2 upper surfaces, when model pipeline 3 has just contacted with the soil body 2 upper surfaces, discharging model pipeline 3 makes it produce initial settlement at the soil body 2 upper surfaces, start the vertical laser displacement sensor 5 of crossbeam 15 bottoms simultaneously, by the initial settlement amount of vertical laser displacement sensor 5 measurement model pipelines 3 at the soil body 2 upper surfaces, the i.e. vertical deviation of model pipeline 3.
3) open motor 13, along model pipeline 3 axis, the drag-line 16 pulling model pipeline 3 by its oblique upper is provided with apply mechanical oblique pulling to model pipeline 3, make model pipeline 3 upwards produce and slide.
4) pulling force sensor 4 by being provided with on the drag-line 16 is measured the pulling force that applies; By being arranged on the parallel laser displacement transducer 6 on the supporting construction 7, in the measurement model pipeline 3 unstability processes on the throne, be parallel to the displacement of sea bed direction; By being arranged on the vertical laser displacement sensor 5 of crossbeam 15 bottoms, in the measurement model pipeline 3 unstability processes on the throne, at the subsequent settlement of soil body upper surface, i.e. vertical deviation.
5), change the weight of model pipeline 3 by the increase and decrease balancing weight; By pasting the sand paper of different meshes on model pipeline 3 surfaces, change the roughness on model pipeline 3 surfaces, return step 2), measure under the conditions such as different model pipeline 3 weight, soil body characteristic (for example soil body relative density etc.) and model pipeline 3 surfacenesses the antiskid dynamic resistance that 2 pairs of model pipeline of the soil body 3 are downward.
6) can analyze the steadiness of different submarine pipelines by all data of measuring in the above-mentioned steps.
The side's of operation example four is with the difference of operation side's example three: as shown in Figure 4, in the step 3), open motor 13, along model pipeline 3 axis, drag-line 16 pulling model pipeline 3 by its oblique below is provided with apply mechanical oblique pulling to model pipeline 3, make model pipeline 3 generation downwards slide.Be used for the consistent soil body 2 that is laid on the vergence direction of the soil body 2 upper surfaces of analogy model pipeline 3, load acts on situation on the model pipeline 3 downwards along the soil body 2 upper surfaces.
The various embodiments described above only are used to illustrate the utility model; wherein the structure of each parts, connected mode etc. all can change to some extent; 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 (8)
1. the mechanical load analogue means of pipeline stability on the throne on the slope sea bed, it is characterized in that: it comprises a transparent soil box, is provided with the soil body that a upper surface tilts in the described soil box, described soil body upper surface is equipped with a model pipeline; Described model pipeline is provided with a machinery loading device that is used to apply pulling force; Described machinery loading device be provided with pulling force sensor, with the vertical vertical laser displacement sensor of soil body upper surface, the parallel laser displacement transducer parallel with soil body upper surface.
2. the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope as claimed in claim 1 is characterized in that:
Described model pipeline is vertical with the vergence direction of the described soil body, level is laid on described soil body upper surface, described machinery loading device comprises the vertical supporting construction that is separately positioned on the described soil box two opposite side walls, two described supporting constructions be provided with one be positioned at described model pipeline top and with the parallel cant beam of described soil body upper surface; Described cant beam bottom surface is provided with sliding rail, and described sliding rail is provided with a slide block;
Described parallel laser displacement transducer is arranged on the described supporting construction of the high origin or beginning of the described soil body, and described vertical laser displacement sensor is arranged on the bottom surface of described cant beam;
Described slide block vertically is provided with the drag-line of the described model pipeline two axial ends of two connections, each drag-line is provided with a described pulling force sensor, described slide block is provided with another drag-line along described cant beam direction, this drag-line is by being successively set on two fixed pulleys on the described supporting construction, and connection one is arranged on the motor of described soil box outside.
3. the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope as claimed in claim 2, it is characterized in that: described two fixed pulleys are separately positioned on the described supporting construction of high origin or beginning one side of the described soil body.
4. the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope as claimed in claim 2, it is characterized in that: described two fixed pulleys are separately positioned on the described supporting construction of described soil body low side one side.
5. as the mechanical load analogue means of pipeline stability on the throne on claim 2 or the 3 or 4 described a kind of slope sea beds, it is characterized in that: the sliding rail of described slide block moving direction rear end is provided with an anti-rolling device, and the other end of described anti-rolling device connects described model pipeline both ends of the surface respectively.
6. the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope as claimed in claim 1, it is characterized in that: described model pipeline is consistent with the vergence direction of the described soil body, be laid on described soil body upper surface, described machinery loading device comprises that one is arranged on the crossbeam at described soil box top, be arranged on the supporting construction on the described soil box sidewall, described parallel laser displacement transducer is arranged on the described supporting construction of the high origin or beginning of the described soil body, and described vertical laser displacement sensor is arranged on the bottom surface of described crossbeam; Described model pipeline end is provided with a drag-line, and described drag-line connects the motor that is arranged on described soil box outside by the fixed pulley that is arranged on the described supporting construction; Drag-line between described model pipeline and the described fixed pulley is provided with described pulling force sensor.
7. the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope as claimed in claim 6, it is characterized in that: described drag-line is arranged on the upper end of described model pipeline, and described fixed pulley is arranged on the described supporting construction of high origin or beginning one side of the described soil body.
8. the mechanical load analogue means of pipeline stability on the throne on the sea bed of a kind of slope as claimed in claim 6, it is characterized in that: described drag-line is arranged on the bottom of described model pipeline, and described fixed pulley is arranged on the described supporting construction of described soil body low side one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205291674U CN201795915U (en) | 2010-09-13 | 2010-09-13 | Mechanical loading analog device for slope seabed pipeline on-bottom stability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205291674U CN201795915U (en) | 2010-09-13 | 2010-09-13 | Mechanical loading analog device for slope seabed pipeline on-bottom stability |
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| CN201795915U true CN201795915U (en) | 2011-04-13 |
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| CN2010205291674U Expired - Lifetime CN201795915U (en) | 2010-09-13 | 2010-09-13 | Mechanical loading analog device for slope seabed pipeline on-bottom stability |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963542A (en) * | 2010-09-13 | 2011-02-02 | 中国海洋石油总公司 | Slope seabed pipeline in-place stability mechanical loading analog device and method thereof |
| CN102323150A (en) * | 2011-08-10 | 2012-01-18 | 中国地质科学院地质力学研究所 | Simulated test unit and method for slope stability with faulting |
| CN102944438A (en) * | 2012-11-09 | 2013-02-27 | 中国科学院力学研究所 | Mechanical experiment loading device with two-parameter control |
-
2010
- 2010-09-13 CN CN2010205291674U patent/CN201795915U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963542A (en) * | 2010-09-13 | 2011-02-02 | 中国海洋石油总公司 | Slope seabed pipeline in-place stability mechanical loading analog device and method thereof |
| CN102323150A (en) * | 2011-08-10 | 2012-01-18 | 中国地质科学院地质力学研究所 | Simulated test unit and method for slope stability with faulting |
| CN102944438A (en) * | 2012-11-09 | 2013-02-27 | 中国科学院力学研究所 | Mechanical experiment loading device with two-parameter control |
| CN102944438B (en) * | 2012-11-09 | 2015-02-11 | 中国科学院力学研究所 | Mechanical experiment loading device with two-parameter control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110413 Effective date of abandoning: 20120502 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110413 Effective date of abandoning: 20120502 |