CN103233484B - Circulating water supply system for centrifugal model testing and usage method thereof - Google Patents
Circulating water supply system for centrifugal model testing and usage method thereof Download PDFInfo
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Abstract
The invention relates to a usage method of a circulating water supply system for centrifugal model testing. The method comprises the following steps: connecting a submersible pump to the base plate of a support frame fixedly; passing the power cable of the submersible pump through a line pipe; connecting the water outlet of the submersible pump with a water inlet pipe; connecting a model table to the support frame fixedly; mounting an isolation net on the support frame; placing a centrifugal model rack with the submersible pump mounted into a model box; adding water into the model box; testing the submersible pump; taking the centrifugal model rack out of the model box after the test is over and then placing the centrifugal model rack on a dam body mounting working table to fabricate a soil engineering centrifugal model; placing and fixing the centrifugal model rack into the model box in a suspension mode; placing and fixing the model box into a centrifugal basket in a suspension mode; and connecting the power cable with an external power source. According to the usage method of the circulating water supply system for the centrifugal model testing, the centrifugal model testing can be achieved with no need of supplying water outside a centrifugal machine. The invention also relates to a circulating water supply system special for the method.
Description
Technical Field
The invention relates to a water supply system applied to a geotechnical centrifugal model test and a using method thereof.
Background
Earth-rock dams account for more than 90% of the total number of built dams at home and abroad, dam break mechanism and risk regulation and control research of earth-rock dams are generally regarded by the dam industry world all the time, China is the country with the largest number of earth-rock dams in the world, and in recent years, large earth-rock dams are continuously built to meet the requirements of national flood control, drought resistance and hydropower development. The dam breaking process of the earth and rockfill dam is extremely complex, the water head fall is large when the earth and rockfill dam breaks, and the earth and rockfill dam is difficult to repair and block in time, and once the earth and rockfill dam breaks, the life and property safety of downstream residents can be seriously threatened. The current calculation theory of the dam break problem of the earth and rockfill dam is not mature, and a large amount of detailed and reliable experimental data are needed for verification in relevant theoretical research and model establishment. The centrifugal model test simulates a gravity field through a centrifugal force field, can ensure that the stress states of a prototype and a model are consistent, and is an economic and effective means for researching the damage problems of geotechnical engineering such as dam break of an earth-rock dam. The problem of water flow supply in centrifugal model tests has been a technical problem. Centrifugal model test water flow control systems driven by compressed air have been built successively at Cambridge university and Manchester university, and although the two systems have relatively stable performance, the two systems have complex structure, large volume and higher development cost; the hong Kong science and technology university develops a set of water flow control system on the basis of the thermoelectric coupling effect (see Limin Zhang & Ting Hu. development of a water control facility for central fugalmodel tests. central fuge91.1991.527-530.), and the system can provide the flow of 25l/min at most through current regulation. The above-described supply of water to the centrifuge mold box via an external water source can cause an imbalance in the counterweight during operation of the centrifuge. If continuous water supply is needed, the excessive water is directly discharged to the centrifugal machine chamber, and the service life of the centrifugal machine is influenced by the excessive air humidity. Meanwhile, the common external water source is difficult to provide enough flow.
Disclosure of Invention
The present invention provides a recirculating water supply system for centrifugal model testing and a method of using the same that reduces or avoids the aforementioned problems.
In order to solve the problems, the invention provides a use method of a circulating water supply system for a centrifugal model test, wherein the circulating water supply system comprises a centrifugal model rack, and the centrifugal model rack comprises a model platform and a supporting frame fixedly connected with the model platform; the model platform is a rectangular box body, a partition plate is arranged in the model platform, the partition plate is used as a boundary, one side of the model platform is a model part, the other side of the model platform is a water storage part, and the water storage part is provided with a line pipe and a water inlet pipe; the supporting frame is fixedly connected below the model platform and comprises a rectangular bottom plate, four corners of the bottom plate are respectively provided with an upright post, an installation beam is arranged between the tops of the adjacent upright posts, and a detachable isolation net is arranged between the adjacent upright posts; the supporting frame is fixedly connected with a submersible pump; the circulating water supply system also comprises a model box for containing a water body and placing the centrifugal model stand;
the method comprises the following steps:
step A, fixedly connecting the submersible pump to the rectangular bottom plate of the supporting frame, hanging the model platform above the supporting frame, penetrating a power cable of the submersible pump through the wire pipe, connecting a water outlet of the submersible pump with the water inlet pipe, then fixedly connecting the model platform with the supporting frame, and then installing the isolation net on the supporting frame;
step B, placing the centrifugal model rack with the submersible pump installed in the model box, connecting a power cable of the submersible pump with an external power supply, adding water into the model box, stopping adding water after the submersible pump is submerged on the water surface, testing the submersible pump, cutting off the power supply connection of the submersible pump after the test is finished, and taking the centrifugal model rack out of the model box;
step C, placing the centrifugal model rack on a dam body installation workbench, and manufacturing a geotechnical centrifugal model on the model part of the centrifugal model rack;
and D, placing the centrifugal model rack into the model box for fixing, placing the model box into a centrifuge basket for fixing, and connecting a power cable of the submersible pump with an external power supply.
Preferably, in the above usage, the partition board is provided with capacity scale marks, and in step B, when the submersible pump is tested, the time when the water surface in the water storage part reaches different scale marks is recorded, so as to calculate the water inlet flow of the water storage part.
Preferably, in step D, after the centrifugal test is started, the submersible pump can be started, the submersible pump pumps water to the water storage part through the water inlet pipe, the water in the water storage part can overflow into the model part through the partition plate after being fully stored, and the water overflowing into the model part flows back to the model box after eroding the geotechnical model, so that circulating water supply is realized.
A circulating water supply system specially used for the method comprises a centrifugal model rack, wherein the centrifugal model rack comprises a model platform for placing an earth model and a supporting frame fixedly connected with the model platform;
the geotechnical model is characterized in that the model platform is a rectangular box body with a hollow top surface and a hollow side surface, a partition board is arranged in the model platform, the partition board is used as a boundary, one side of the model platform with the hollow side surface is a model part for placing the geotechnical model, the other side of the model platform with the hollow side surface is a water storage part for storing water, and a wire pipe and a water inlet pipe for penetrating a cable are arranged in the water storage part;
the supporting frame is fixedly connected below the model platform and comprises a rectangular bottom plate, four corners of the bottom plate are respectively provided with an upright post, an installation beam is arranged between the tops of the adjacent upright posts, and a detachable isolation net is arranged between the adjacent upright posts;
a submersible pump is fixed on the bottom plate of the supporting frame, and a water outlet of the submersible pump is connected with the water inlet pipe of the water storage part;
the circulating water supply system further comprises a model box for containing a water body, and the centrifugal model rack is arranged in the model box.
Preferably, a manometer and a control valve are arranged on the water inlet pipe, the water inlet pipe is further connected with an energy consumption pipe, and the energy consumption pipe is provided with a plurality of bending parts.
Preferably, at least one speed reducer is arranged on the energy consumption pipe, a plurality of speed reduction rings arranged in parallel are arranged in the speed reducer, and the speed reduction rings are provided with a plurality of fan-shaped fins distributed at equal intervals.
Preferably, 3 ~ 10 parallel arrangement's speed reducing ring has in the reduction gear, the speed reducing ring has 3 ~ 5 fan-shaped fins of equal interval distribution, and is adjacent fan-shaped fin position on the speed reducing ring staggers each other evenly.
According to the circulating water supply system for the centrifugal model test and the using method thereof, water supply from the outside of the centrifugal machine is not needed, the structural requirement on the centrifugal machine is simplified, and meanwhile, the circulating water supply in the model box can be stable in speed by arranging the energy consumption pipe, the speed reducing pipe and other devices, so that the requirement of the geotechnical centrifugal test is met.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
FIG. 1 is a schematic diagram of a circulating water supply system for centrifugal model testing according to an embodiment of the present invention;
FIG. 2 is an exploded view of the circulating water supply system for centrifugal model test shown in FIG. 1;
FIG. 3 is a schematic top view of the mold table of FIG. 2;
FIG. 4 is a schematic structural diagram of the dissipation tube shown in FIG. 2;
FIG. 5 is a cross-sectional schematic view of the retarder shown in FIG. 4;
FIGS. 6a to 6c are schematic cross-sectional views taken along lines I-I, II-II and III-III in FIG. 5, respectively.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
The structure and the principle of a circulating water supply system for centrifugal model test and the use method thereof according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a circulating water supply system for centrifugal model testing according to an embodiment of the present invention; FIG. 2 is an exploded view of the circulating water supply system for centrifugal model test shown in FIG. 1; FIG. 3 is a schematic top view of the mold table of FIG. 2; referring to fig. 1-3, the present invention provides a method for using a circulating water supply system for a centrifugal model test, wherein the circulating water supply system comprises a centrifugal model rack 3, the centrifugal model rack 3 comprises a model platform 31 and a support frame 32 fixedly connected with the model platform 31; the model table 31 is a rectangular box body, a partition plate 311 is arranged in the model table, the partition plate 311 is used as a boundary, one side of the model table 31 is a model part 312, the other side of the model table is a water storage part 313, and the water storage part 313 is provided with a conduit 3131 and a water inlet pipe 3132; the supporting frame 32 is fixedly connected below the model platform 31, the supporting frame 32 comprises a rectangular bottom plate 321, four corners of the bottom plate 321 are respectively provided with a vertical column 322, an installation beam 323 is arranged between the tops of the adjacent vertical columns 322, and a detachable separation net 324 is arranged between the adjacent vertical columns 322; the supporting frame 32 is fixedly connected with a submersible pump 33; the circulating water supply system further comprises a model box 2 for containing a water body and placing the centrifugal model stand 3;
the method comprises the following steps:
step A, fixedly connecting the submersible pump 33 to the rectangular bottom plate 321 of the support frame 32, hanging the model platform 31 above the support frame 32, passing a power cable of the submersible pump 33 through the conduit 3131, connecting a water outlet of the submersible pump 33 with the water inlet pipe 3132, then fixedly connecting the model platform 31 with the support frame 32, and then installing an isolation net 324 on the support frame 32;
the isolation net 324 is installed at the last, so that accidental damage to the isolation net 324 in the operation process when the submersible pump 33 is installed on the rectangular bottom plate 321 and the model platform 31 is fixedly connected with the support frame 32 can be effectively avoided. A plurality of mounting tabs (e.g., L-shaped tabs) corresponding to the mounting beams 323 of the supporting frame 32 may be disposed on the bottom surface of the model platform 31 for fixedly connecting the model platform 31 and the supporting frame 32, which may facilitate assembly and fixation.
The height of the conduit 3131 may be higher than the height of the partition 311, so that the water in the reservoir 313 may be prevented from leaking out of the conduit 3131.
Step B, placing the centrifugal model stand 3 with the submersible pump 33 installed in the model box 2, connecting a power cable of the submersible pump 33 with an external power supply, adding water into the model box 2, stopping adding water after the submersible pump 33 is submerged on the water surface, testing the submersible pump 33, cutting off the power supply connection of the submersible pump 33 after the test is finished, and taking the centrifugal model stand 3 out of the model box 2;
the test of the submersible pump 33 comprises an electric leakage test and a water pumping test, the electric leakage test of the submersible pump 33 after the submersible pump 33 is submerged on the water surface can ensure that the centrifuge cannot break down due to electric leakage in the centrifugal model test process, and the water pumping test can ensure that the water supply in the centrifugal model test process is carried out.
Step C, placing the centrifugal model rack 3 on a dam body installation workbench, and manufacturing a geotechnical centrifugal model 4 on the model part 312 of the centrifugal model rack 3;
the dam body installation workbench can be an open ground or a special table, and is mainly convenient for workers to have enough operation space when the model part 312 is used for manufacturing the geotechnical centrifugal model 4.
The above steps A-C are all carried out outside the centrifuge.
And D, hanging the centrifugal model rack 3 into the model box 2 and fixing the centrifugal model rack, hanging the model box 2 into the centrifuge basket 1 and fixing the centrifuge basket, and connecting a power cable of the submersible pump 33 with an external power supply. This was followed by the centrifugal model test.
The power cable of the submersible pump 33 can pass through the slip ring and the rotating arm of the centrifuge to be connected with an external power supply outside the centrifuge, and of course, if a power line connector for providing power is arranged in the centrifuge basket 1, the power cable of the submersible pump 33 can also be connected with the power line connector in the centrifuge basket 1.
In a preferred embodiment, the model platform 31 is a rectangular box with a top surface and a side surface being empty, and is bounded by the isolation board 311, one side of the model platform 31 with the side surface being empty is a model part 312 for placing the geotechnical model, and the other side is a water storage part 313 for storing water; the height of division board 311 is less than the height of 3 lateral walls of model platform 31, after centrifugal test begins, can give immersible pump 33 adds the electricity, immersible pump 33 passes through water inlet pipe 3132 inputs to water storage portion 313, can pass through after water storage portion 313 holds full the division board 311 overflows model portion 312, overflows the water of model portion 312 is eroding it flows back behind geotechnique's centrifugal model 4 model case 2 to realize circulation water supply, need not carry out any transformation to current centrifuge moreover.
In a preferred embodiment, in the above usage method, the partition 311 is provided with a volume scale mark, and in step B, when the submersible pump 33 is tested, the time when the water level in the water storage part 313 reaches different scale marks is recorded, so as to calculate the water inlet flow of the water storage part 313.
The time when the water level in the water storage part 313 reaches the scale marks with different capacities on the separation plate 311 can be manually recorded by using a time device such as a stopwatch, so that the water inlet flow of the water storage part 313 can be conveniently calculated.
Referring to fig. 1-3, the present invention also provides a circulating water supply system specially used for the method, the circulating water supply system comprises a centrifugal model stand 3, the centrifugal model stand 3 comprises a model platform 31 for placing the geotechnical model 4 and a support frame 32 fixedly connected with the model platform 31;
the model platform 31 is a rectangular box body with a hollow top surface and a hollow side surface, a partition plate 311 is arranged in the model platform 31, the partition plate 311 is used as a boundary, one side of the model platform 31 with the hollow side surface is a model part 312 for placing the geotechnical model 4, the other side of the model platform is a water storage part 313 for storing water, and a wire pipe 3131 and a water inlet pipe 3132 for penetrating cables are arranged in the water storage part 313;
the supporting frame 32 is fixedly connected below the model platform 31, the supporting frame 32 comprises a rectangular bottom plate 321, four corners of the bottom plate 321 are respectively provided with a vertical column 322, an installation beam 323 is arranged between the tops of the adjacent vertical columns 322, and a detachable separation net 324 is arranged between the adjacent vertical columns 322;
a submersible pump 33 is fixed on the bottom plate 321 of the support frame 32, and a water outlet of the submersible pump 33 is connected with the water inlet pipe 3132 of the water storage part 313;
the circulating water supply system further comprises a model box 2 for containing water, and the centrifugal model stand 3 is arranged in the model box 2.
The height of the isolation plate 311 is less than the height of 3 side walls of the model platform 31, when a centrifugal model test is performed, the submersible pump 33 conveys water in the model box 2 to the water storage part 313, the water in the water storage part 313 can uniformly overflow to the model part 312 through the isolation plate 311 after being fully stored, and the water overflowing to the model part 312 flows back to the model box 2 through the empty side of the model platform 31 after acting (for example, eroding) on the geotechnical centrifugal model 4 or overflowing the geotechnical centrifugal model 4, so that circulating water supply is realized, and any modification of the existing centrifuge is not needed.
The main function of the water storage part 313 is to ensure that the water flow to the geotechnical centrifugal model 4 is uniform when performing centrifugal model test, so that it does not need large volume, and the volume of the water storage part 313 can be reduced as much as possible by arranging the isolation plate 311, so that enough space can be left for the model part 312 to arrange the geotechnical centrifugal model 4 with large size.
The separation net 324 can be a high mesh filter net, for example, a 60 mesh filter net, and the separation net 324 is mounted on the support frame instead of being directly mounted on the water intake of the submersible pump 33, so that in the centrifugal model test process, after the water flow washes the building materials such as sand and soil of the geotechnical centrifugal model 4 into the model box 2, even if the local part of the separation net 324 is silted up, the water intake work of the submersible pump 33 is not affected.
FIG. 4 is a schematic structural diagram of the dissipation tube shown in FIG. 2; referring to fig. 2-4, in a preferred embodiment, a manometer and a control valve are disposed on the water inlet pipe 3132, and the water inlet pipe 3132 is further connected to a power consumption pipe 5, wherein the power consumption pipe 5 has a plurality of bending portions.
The pressure gauge and the control valve can make the staff more convenient audio-visual control inflow. The energy consumption pipe 5 is used for increasing the travel of the water flow before entering the water storage part 313, and changing the flow direction and reducing the flow speed of the water flow before entering the water storage part 313 as much as possible, so that the water flow is smooth when a high-overload centrifugal model test is carried out.
The energy dissipation pipe 5 can be formed by splicing commercially available pvc pipes or metal pipes, in a preferred embodiment, as shown in fig. 4, the energy dissipation pipe 5 includes at least two serially connected U-shaped portions 51, the width range of the U-shaped portions 51 is 6-8cm, the height range of the U-shaped portions 51 is 4-7cm, the length L range of the energy dissipation pipe 5 is 25-35cm, the height H range of the energy dissipation pipe is 12-18cm, a horizontal steering pipe 52 is arranged at the bottom of the energy dissipation pipe, and a steering elbow is arranged at the end of the horizontal steering pipe 52. The horizontal diversion pipe can make water flow out from the middle position of the bottom of the water storage part 313, so that the uniformity of water overflowing from the water storage part 313 to the model part 312 can be further ensured. Tests prove that in the overload condition of more than 30g, after the energy consumption pipe 5 with the size is installed, the uniformity of water overflowing from the water storage part 313 to the model part 312 is effectively improved compared with the uniformity before the energy consumption pipe is not installed.
FIG. 4 is a schematic structural diagram of the dissipation tube shown in FIG. 2; FIG. 5 is a cross-sectional schematic view of the retarder shown in FIG. 4; FIGS. 6a to 6c are schematic cross-sectional views taken along lines I-I, II-II and III-III in FIG. 5, respectively. Referring to fig. 2, 4-6, in a preferred embodiment, at least one speed reducer 53 is disposed on the energy consumption pipe 5, as shown in fig. 4, the speed reducer 53 may be mounted on the horizontal steering pipe 52, or may be mounted at a position indicated by a dashed frame in fig. 4, that is, the speed reducer 53 may be flexibly mounted at any position of the energy consumption pipe 5 as a component.
The reducer 53 is provided with a plurality of parallel reduction rings 531, and the reduction rings 531 are provided with a plurality of fan-shaped fins 532 distributed at equal intervals. The number of the speed reduction rings 531 is 3 as shown in detail in fig. 5 to 6, and each of the speed reduction rings 531 has 4 fan-shaped fins 532 arranged at equal intervals. In a preferred embodiment of the present invention, there are 3 to 10 parallel deceleration rings 531 in the decelerator, and each deceleration ring 531 has 3 to 5 fan-shaped fins 532 distributed at equal intervals.
The speed reducer 53 provided by the invention can change the distribution angle of the fan-shaped fins 532 on the speed reducing ring 531, and can continuously change the flow direction and the speed of the water flow entering the speed reducer 53 in the flow process through the proportion of the fan-shaped fins 532 on the speed reducing ring 531 and the cavities 533, so that the water flow can be ensured to be more stable when flowing out from the energy consumption tube 5 when a high-overload centrifugal model test is carried out.
For example, in the particular embodiment shown in the figures, the reduction ring 531 has 4 fan fins 532 to cavity 533 ratios of 1: 2; the positions of the fan-shaped fins 532 on the adjacent speed reduction rings 531 are uniformly staggered, that is, since the number of the speed reduction rings 531 arranged in parallel is 3, the positions of the fan-shaped fins 532 on the adjacent speed reduction rings 531 may be staggered by 360/3=120 °. Of course, it will be understood by those skilled in the art that the angle of the staggered fan-shaped fins 532 may also be determined according to the ratio of the fan-shaped fins to the cavity 533, so as to make the water flow entering the speed reducer 53 change the flow direction and speed continuously, thereby making it possible to flow out of the energy consumption tube 5 uniformly and smoothly even when the high overload centrifugal model test is performed.
According to the circulating water supply system for the centrifugal model test and the using method thereof, water supply from the outside of the centrifugal machine is not needed, the structural requirement on the centrifugal machine is simplified, and meanwhile, the circulating water supply in the model box can be stable in speed by arranging the energy consumption pipe, the speed reducing pipe and other devices, so that the requirement of the geotechnical centrifugal test is met.
It should be appreciated by those of skill in the art that while the present invention has been described in terms of several embodiments, not every embodiment includes only a single embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including technical equivalents which are related to the embodiments and which are combined with each other to illustrate the scope of the present invention.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent alterations, modifications and combinations can be made by those skilled in the art without departing from the spirit and principles of the invention.
Claims (7)
1. A use method of a circulating water supply system for a centrifugal model test is disclosed, wherein the circulating water supply system comprises a centrifugal model rack, and the centrifugal model rack comprises a model platform and a support frame fixedly connected with the model platform; the model platform is a rectangular box body, a partition plate is arranged in the model platform, the partition plate is used as a boundary, one side of the model platform is a model part, the other side of the model platform is a water storage part, water in the water storage part overflows into the model part through the partition plate after being fully stored, and the water storage part is provided with a line pipe and a water inlet pipe; the supporting frame is fixedly connected below the model platform and comprises a rectangular bottom plate, four corners of the bottom plate are respectively provided with an upright post, an installation beam is arranged between the tops of the adjacent upright posts, and a detachable isolation net is arranged between the adjacent upright posts; the supporting frame is fixedly connected with a submersible pump; the circulating water supply system also comprises a model box for containing a water body and placing the centrifugal model stand;
characterized in that the method comprises the following steps:
step A, fixedly connecting the submersible pump to the rectangular bottom plate of the supporting frame, hanging the model platform above the supporting frame, penetrating a power cable of the submersible pump through the wire pipe, connecting the water outlet of the submersible pump with the water inlet pipe, then fixedly connecting the model platform with the supporting frame, and then installing the isolation net on the supporting frame;
step B, placing the centrifugal model rack with the submersible pump installed in the model box, connecting a power cable of the submersible pump with an external power supply, adding water into the model box, stopping adding water after the submersible pump is submerged on the water surface, testing the submersible pump, cutting off the power supply connection of the submersible pump after the test is finished, and taking the centrifugal model rack out of the model box;
step C, placing the centrifugal model rack on a dam body installation workbench, and manufacturing a geotechnical centrifugal model on the model part of the centrifugal model rack;
and D, placing the centrifugal model rack into the model box for fixing, placing the model box into a centrifuge basket for fixing, and connecting a power cable of the submersible pump with an external power supply.
2. The method of claim 1, wherein the partition is provided with a volume scale mark, and wherein in step B, when the submersible pump is tested, the time when the water level in the water storage part reaches different scale marks is recorded, so as to calculate the water inlet flow of the water storage part.
3. The method according to claim 1, wherein in step D, after the centrifugal test is started, the submersible pump is started to pump water to the water storage part through the water inlet pipe, the water in the water storage part overflows into the model part through the partition plate after being fully stored, and the water overflowing into the model part flows back to the model box after eroding the geotechnical centrifugal model, so that circulating water supply is realized.
4. A circulating water supply system dedicated to the method according to any one of claims 1 to 3, characterized in that it comprises a centrifugal modelling frame comprising a modelling table for placing an earth model and a support frame fixedly connected to said modelling table;
the model platform is a rectangular box body with a hollow top surface and a hollow side surface, a partition board is arranged in the model platform, the partition board is used as a boundary, the side surface of the model platform with the hollow side surface is a model part for placing the geotechnical model, the other side of the model platform with the hollow side surface is a water storage part for storing water, and a wire pipe for penetrating a cable and a water inlet pipe are arranged in the water storage part;
the supporting frame is fixedly connected below the model platform and comprises a rectangular bottom plate, four corners of the bottom plate are respectively provided with an upright post, an installation beam is arranged between the tops of the adjacent upright posts, and a detachable isolation net is arranged between the adjacent upright posts;
a submersible pump is fixed on the bottom plate of the supporting frame, and a water outlet of the submersible pump is connected with the water inlet pipe of the water storage part;
the circulating water supply system also comprises a model box for containing a water body, and the centrifugal model rack is arranged in the model box.
5. The circulating water supply system of claim 4, wherein the water inlet pipe is provided with a pressure gauge and a control valve, the water inlet pipe is further connected with an energy consumption pipe, and the energy consumption pipe is provided with a plurality of bending parts.
6. The circulating water supply system according to claim 5, wherein the energy consumption pipe is provided with at least one speed reducer, the speed reducer is internally provided with a plurality of speed reduction rings arranged in parallel, and the speed reduction rings are provided with a plurality of fan-shaped fins distributed at equal intervals.
7. The circulating water supply system according to claim 6, wherein the speed reducer is internally provided with 3-10 speed reducing rings which are arranged in parallel, the speed reducing rings are provided with 3-5 fan-shaped fins which are distributed at equal intervals, and the positions of the fan-shaped fins on the adjacent speed reducing rings are uniformly staggered with each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310132594.7A CN103233484B (en) | 2013-04-17 | 2013-04-17 | Circulating water supply system for centrifugal model testing and usage method thereof |
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| CN201310132594.7A CN103233484B (en) | 2013-04-17 | 2013-04-17 | Circulating water supply system for centrifugal model testing and usage method thereof |
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| CN103233484A CN103233484A (en) | 2013-08-07 |
| CN103233484B true CN103233484B (en) | 2014-11-19 |
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| CN107907295B (en) * | 2017-10-23 | 2019-05-31 | 中国地质大学（武汉） | A kind of geotechnical centrifuge case that long-range control loop simulation tsunami acts on slight slope |
| CN108946439A (en) * | 2018-07-27 | 2018-12-07 | 广船国际有限公司 | A kind of immersible pump nacelle device |
| CN108933372B (en) * | 2018-07-27 | 2024-01-16 | 中国工程物理研究院总体工程研究所 | Geotechnical centrifuge hanging basket power supply device |
| CN109374863A (en) * | 2018-11-28 | 2019-02-22 | 浙江大学 | A kind of circulating water supply device for centrifugal model test under high-g level |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3768208B2 (en) * | 2003-06-26 | 2006-04-19 | 西松建設株式会社 | Reduction model of groundwater level lowering method |
| CN2921811Y (en) * | 2006-06-09 | 2007-07-11 | 华中农业大学 | Runoff dynamics parameter test table |
| CN102535386A (en) * | 2011-12-22 | 2012-07-04 | 水利部交通运输部国家能源局南京水利科学研究院 | System for controlling high-flow water flow of centrifugal machine |
-
2013
- 2013-04-17 CN CN201310132594.7A patent/CN103233484B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3768208B2 (en) * | 2003-06-26 | 2006-04-19 | 西松建設株式会社 | Reduction model of groundwater level lowering method |
| CN2921811Y (en) * | 2006-06-09 | 2007-07-11 | 华中农业大学 | Runoff dynamics parameter test table |
| CN102535386A (en) * | 2011-12-22 | 2012-07-04 | 水利部交通运输部国家能源局南京水利科学研究院 | System for controlling high-flow water flow of centrifugal machine |
Non-Patent Citations (2)
| Title |
|---|
| 张利民等.高重力场中离心模型的水流控制设备.《成都科技大学学报》.1989,(第45期),93-97. * |
| 高重力场中离心模型的水流控制设备;张利民等;《成都科技大学学报》;19890331(第45期);93-97 * |
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