CN211973346U - Movable type counter-slope water rising device for movable bed area of river model - Google Patents
Movable type counter-slope water rising device for movable bed area of river model Download PDFInfo
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- CN211973346U CN211973346U CN202020311229.8U CN202020311229U CN211973346U CN 211973346 U CN211973346 U CN 211973346U CN 202020311229 U CN202020311229 U CN 202020311229U CN 211973346 U CN211973346 U CN 211973346U
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Abstract
The utility model discloses a portable adverse slope of river model movable bed district device that rises, the device includes: the water supply device is used for controlling the water supply flow by the control terminal; the water diversion device is communicated with the water supply device and divides and homogenizes the water provided by the water supply device; the water flow buffer device is arranged in a movable depression area, and the flow speed of the water flow is reduced by the flow-divided and homogenized water through the water flow buffer device; and the flow velocity measuring device is arranged at the sand surface outside the water flow buffer device, measures the flow velocity of water flowing through the water flow buffer device and transmits the flow velocity data to the control terminal. The utility model discloses a movable bed low-lying district water injection's portable adverse slope device that rises in advance can realize that the low-lying basin bottom zone's slow adverse slope rises water, reduces the destruction of laying the topography to the movable bed by a wide margin.
Description
Technical Field
The utility model relates to the technical field of electric machine, especially, relate to a portable adverse slope water rising device in river model moving bed district.
Background
The method of moving bed river work model test is often adopted in the laboratory for researching the water flow scouring problem, the moving bed area is the river bed appearance form that non-hardened bed sand is laid according to the river bed appearance, and the scouring evolution characteristics of the river bed are reflected through the interaction with the hydrodynamic force. Before the test is operated, after the precise sand paving and various preparation works of the riverbed are completed, the riverway is in a dry state, a water body needs to be injected into the model, and the strict initial water depth condition is met.
In order to avoid unnecessary damage of water flow to movable bed sand-laying terrain, a boundary water pump is often adopted to supply water at a low power and a low speed at a low power at present, the method is easy to cause movable bed terrain erosion due to a long distance between an operator and a site, particularly for a similar basin type model with a high terrain at a water boundary, a low terrain at a middle movable bed area and a large fall, the slow water supply at the water boundary has a large defect, although the water boundary can provide a small flow, a thin water layer can still automatically accelerate along a slope under the action of gravity due to the fact that a water flow positive slope exists in the model, certain damage is caused to the initial sand-laying terrain, the test precision is influenced, if a basin bottom is also in the movable bed area, a damaged area is larger, much time is needed to repair and restore the damaged area in water, and the test efficiency and precision are influenced.
Therefore, the water is supplied separately in advance in the model basin bottom area with lower elevation, the water flow slowly rises in a reverse slope at a low flow speed without starting with lower bottom sand, and boundary water supply is supplemented after a water layer with a certain depth is injected into an important moving bed area, so that the acceleration effect of a positive slope is reduced, and the sand surface quality of the moving bed is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable adverse slope rising water installation in river model moving bed district to solve the problem that the water border positive slope rivers that exist among the correlation technique are easy to destroy the moving bed topography.
In order to achieve the above object, an embodiment of the present invention provides a movable type adverse slope water rising device for a river model moving bed area, including:
the water supply device is used for controlling the water supply flow by the control terminal;
the water diversion device is communicated with the water supply device and divides and homogenizes the water provided by the water supply device;
the water flow buffer device is arranged in a movable depression area, and the flow speed of the water flow is reduced by the flow-divided and homogenized water through the water flow buffer device;
and the flow velocity measuring device is arranged at the sand surface outside the water flow buffer device, measures the flow velocity of water flowing through the water flow buffer device and transmits the flow velocity data to the control terminal.
Further, water supply installation includes clear water tank, first self priming pump and second self priming pump, the rated flow of first self priming pump is less than the rated flow of second self priming pump, the entry of first self priming pump and second self priming pump all is linked together with clear water tank, the export all with the water diversion device is linked together, the second self priming pump links to each other with the converter, the converter is controlled by control terminal.
Furthermore, first self priming pump and second self priming pump are respectively through respective inlet tube water intaking in the clear water tank.
Furthermore, each water inlet pipe is provided with a valve.
Furthermore, a water return pipe is connected to a water outlet pipe of the first self-sucking pump, and the water return pipe is communicated with a clear water tank.
Furthermore, a valve is installed on the water return pipe.
Furthermore, the water diversion device comprises a water diversion box, a water collection hole for the water supply device to enter is formed in the water diversion box, a plurality of water diversion holes are formed in the bottom of the water diversion box, a water diversion pipe is connected to each water diversion hole, and the water diversion pipes extend to the position above the water flow buffering device.
Furthermore, the tail end of the water distribution pipe is connected with a hose.
Further, the water flow buffering device adopts a rubber cushion, and the surface of the rubber cushion is provided with unsmooth wavy stripes.
Furthermore, the flow velocity measuring device adopts a flow velocity measuring rod and a flow velocity meter connected with the flow velocity measuring rod, and the flow velocity meter is connected to the control terminal.
According to the embodiment of the utility model, the utility model discloses a water supply installation is by control terminal control water supply flow, earlier supply water at a slow speed, reach the required requirement of velocity of flow measurement until the depth of water, and then do not start the velocity of flow according to the bed sand, and the velocity of flow data that velocity of flow measurement device surveyed, rely on control terminal, control water supply installation's flow continues the water injection, divide water through the water diversion device homogenization, realize that the adverse slope of moving bed district water level is stable to rise, make key moving bed district topography and appearance stable, do not corrode, thereby reduce in the past through the destruction of water border normal slope water supply method to initial topography by a wide margin. In addition, the water flow buffer device is arranged in a movable depression area, and the flow speed of water flow can be well reduced and disturbance of the water flow is reduced by the aid of the water flow buffer device after the water flow is divided and homogenized.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:
FIG. 1 is a diagram of a moving bed river model in elevation along a body line;
fig. 2 is a structural diagram of a movable counter-slope water-rising device of a river model moving bed area according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of the water cut-off section B of FIG. 2;
FIG. 4 is a cross-sectional view of the water-dividing segment A-A of FIG. 3;
in the figure, a fixed bed riverbed 1, a moving bed sand layer 2, a control terminal 3, a frequency converter 4, a clean water tank 5, a first self-priming pump 6, a second self-priming pump 7, a water outlet pipe 8, a water inlet pipe 9, a water return pipe 10, a valve 11, a support 12, a steel bridge 13, a current meter 14, a water collecting hole 15, a water distribution box 16, a water distribution pipe 17, a hose 18, a rubber cushion 19, a handle 20, a support rod 21, a current measuring rod 22, a water distribution section B, a deep Hongyan C, an upstream water boundary D, a downstream water boundary E, a moving bed boundary F and a moving bed sand surface G.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
FIG. 1 is a vertical view of a movable bed river model along a direction of a deep body line C, the river model is a part of a river channel, the side wall and the bottom surface of the model main body are both made of red bricks and concrete, and the model is a closed body and does not leak water. The water flow movement is simulated through two water boundaries, namely an upstream boundary and a downstream boundary, of the model together, a moving bed area which is mainly researched is positioned in the middle of the model, and a water body with a certain depth needs to be injected into the model before the water flow movement is simulated. A fixed bed riverbed 1 in a riverway is a hardened cement surface, water flow cannot erode and wash, a movable bed area is positioned in the middle of the riverway, a movable bed sand laying layer 2 is model sand selected according to a similar principle of bed sand starting, the surface form of the model sand which is finely manufactured according to actual test requirements is a movable bed sand surface G, and the sand laying layer can be flushed under the condition of conventional test water flow. As shown in fig. 1, the present example is a model including two water boundaries, namely an upstream water boundary and a downstream water boundary, and can be used for simulating the scouring of the riverbed by tide and flood current movement, wherein the moving bed area is located in the middle of a river and the terrain is relatively low, when water is injected before a test, water flows to a lower position, if water is firstly supplied at an upstream water boundary D or a downstream water boundary E, accelerated water flow can damage a moving bed sand-laying surface G to a certain extent, and the scouring test precision of the riverbed is influenced. The movable counter-slope water rising device is adopted for the middle moving bed area. In combination with experimental experience, the opposite impact of the boundary water flow on the topography of the moving bed area basically does not cause bottom erosion when the water level rises to the vicinity of the outer side 2m of the moving bed, so the reverse slope water rising device aims to pre-fill the middle low-lying area to the safe water level of the moving bed (the water level rises to the vicinity of the outer side 2m of the boundary of the moving bed).
Combine fig. 2 to 4 to show, according to the utility model discloses an embodiment provides a portable adverse slope of river model moving bed district device that rises, is applied to river model test field, mainly for realizing the initial, stable water injection of model of moving bed river reach.
The following is an example of a moving bed model including two water boundaries, namely an upstream water boundary and a downstream water boundary, which can simulate tide and flood power to wash a river bed, and the device comprises:
the water supply device is used for controlling the water supply flow by the control terminal;
the water diversion device is communicated with the water supply device and divides and homogenizes the water provided by the water supply device;
the water flow buffer device is arranged in a movable depression area, and the flow speed of the water flow is reduced by the flow-divided and homogenized water through the water flow buffer device;
and the flow velocity measuring device is arranged at the sand surface outside the water flow buffer device, measures the flow velocity of water flowing through the water flow buffer device and transmits the flow velocity data to the control terminal.
According to the above embodiment, the utility model discloses a water supply installation is by control terminal control water supply flow, the speed supplies water at first, reach the required requirement of velocity of flow measurement until the depth of water, and then do not start the velocity of flow according to the bed sand, and the velocity of flow data that velocity of flow measuring device surveyed, rely on control terminal, control water supply installation's flow continues the water injection, divide water through the water diversion device homogenization, realize that the adverse slope of moving bed district water level is stable to rise, make key moving bed district topography stable, do not corrode, thereby reduce in the past through the destruction of water border normal slope water supply method to initial topography by a wide margin. In addition, the water flow buffer device is arranged in a movable depression area, and the flow speed of water flow can be well reduced and disturbance of the water flow is reduced by the aid of the water flow buffer device after the water flow is divided and homogenized.
According to the utility model discloses an embodiment, water supply installation includes clear water tank 5, first self priming pump 6 and second self priming pump 7, the entry of first self priming pump 6 and second self priming pump 7 is linked together with clear water tank 5 through respective inlet tube 9 respectively, the export respectively through respective outlet pipe 8 with the water diversion device is linked together, second self priming pump 7 links to each other with converter 4, converter 4 is controlled by control terminal. The second self-priming pump 7 supplies water with relatively large flow under the control of the frequency converter under the condition of ensuring that bottom sand is not started basically.
The water supply device is divided into two paths of self-priming pumps, the first path is a first self-priming pump 6, and the rated flow of the first self-priming pump is 1m3Within/h, the frequency is manually adjusted for slow water supply before the flow rate measuring rod 22 can normally work. The other path is a second self-priming pump 7 which is connected with a control terminal 3 through a frequency converter 4, and the rated flow of the second self-priming pump is 5-10 m3And h, under the condition of ensuring that the bottom sand is basically not started, water supply with relatively large flow is carried out through the control of the frequency converter.
Optionally, a valve 11 is mounted on each inlet pipe 9 for easy adjustment.
Optionally, be connected with wet return 10 on the outlet pipe 8 of first self priming pump 6, wet return 10 lets in clear water tank 5, install valve 11 on the wet return 10, but like this greatly increased miniflow dispatch.
According to the utility model discloses an embodiment, the water diversion apparatus is including dividing box 16, it has the confession to divide to open on the box 16 water supply apparatus lets in catchment hole 15, divide 16 bottoms of box to open and have 5 ~ 10 distributive holes, be connected with distributive pipe 17 on every distributive hole, pipe diameter 1cm, distributive pipe 17 end-to-end connection has hose 18, and hose length is comparatively nimble, adaptable different height riverbed form, and each hose all is furnished with the stagnant water clamp, to different models, can control the apopore by different positions and flow. The water diversion pipe 17 extends to the upper part of the water flow buffering device.
According to the utility model discloses an embodiment, can connect through steel bridge 13 between water supply installation and the water diversion device, support 12 supports is passed through at both ends. The two water outlet pipes 8 are arranged on the steel bridge 13 and extend to the position of the water collecting hole 15. Along the journey have a plurality of water collecting hole 15 on the steel bridge 13 to adapt to different deep trouth positions, the steel bridge adopts U shaped steel, and the width is 10 ~ 15 cm. The two water outlet pipes are arranged in the U-shaped groove of the steel bridge and extend to the position of the water collecting hole 15, and water flows through the pipeline and then is gathered into the water distributing box 16 fixed below the water collecting hole through the water collecting hole.
According to the utility model discloses an embodiment, rivers buffer adopts rubber cushion 19, rubber cushion 19's surface has the unsmooth wave stripe (protruding range more than 5 mm), does benefit to the velocity of flow that reduces rivers through increasing the roughness. Optionally, the rubber cushion side has two handles 20, the convenient cloth accuse.
According to the utility model discloses an embodiment, velocity of flow measuring device adopts velocity of flow measuring rod 22 and the current meter 14 that links to each other with velocity of flow measuring rod 22, and current meter 14 access control terminal 3.
Optionally, a supporting rod 21 is anchored at the side edge of the steel bridge at the water collecting box 16, the flow rate measuring rod 22 is fixed on the supporting rod and is inserted into a measuring point at the upper part of the riverbed, and the rotary grouting can be placed along the deep body line.
The control terminal is an industrial controller.
The utility model discloses a river model movable bed district movable type adverse slope water rising method, including following step:
s101, paving a water flow buffer device in a low-lying area of a movable bed along the direction of a deep body line, erecting a steel bridge and a water distribution device right above the water flow buffer device, and arranging a flow velocity measuring device on a sand surface outside the water flow buffer device;
step S102, because the flow velocity measuring rod has a certain measuring blind area, firstly inserting a turbidity meter (not marked in the figure) into water, starting the first self-priming pump 6, monitoring the turbidity on site without increasing basically, manually carrying out pressure fine adjustment on the first self-priming pump, slowly lifting the water level at the bottom of the river model until the flow velocity measuring device can normally measure, closing the first self-priming pump 6, and moving out the turbidity meter;
step S103, acquiring flow speed data through a flow speed measuring device, wherein the measuring frequency of a flow speed probe is 10S, the flow speed value is continuously 5S average, a second self-priming pump 7 is started from a lower frequency, the flow speed data V is synchronously acquired by a control terminal 3, when V is less than V0, the frequency of the second self-priming pump 7 is gradually increased (the frequency amplification per minute is limited within 1 hz), and when V is greater than V0, the increase is immediately stopped, so that bottom sand in a moving bed area is not started, and water is continuously injected into a moving bed pit; wherein V0 is the flow rate for bottom sand flush initiation;
and step S104, when the water surface reaches the target water level identification position, the second self-priming pump 7 can be closed.
And in the water surface stabilization period, the rubber cushion, the steel bridge, the water diversion device, the flow velocity measuring rod 22 and the like are removed, so that the water supply task of the movable type counter-slope water rising device is completed. The conventional water supply of the water boundary can not influence the terrain of the moving bed area.
Before the step test, the model sand start flow rate value which plays a role in judging the bottom sand start needs to be determined. Model sand paved in a moving bed area is selected according to the requirement of model scale conversion, the model sand with the similar model sand scouring starting characteristic to that of a natural river channel is selected, the flow velocity V0 of bottom sand scouring starting is a necessary parameter of a moving bed test, and after the flow velocity reaches the value, the bottom sand can be continuously scoured and eroded along with the increase of the flow velocity. Conventional sand is typically obtained by direct look-up, and new sand is provided by additional starting tests.
The frequency converter 4 and a second self-priming pump 7 switch controlled by the frequency converter are both installed in the circuit control box and connected with the water pump and the control terminal 3 through cables and signal lines, and a voltage stabilizer is required to be connected to the model total power configuration in order to stabilize the relation between the flow rate and the frequency of the water pump.
The current meter 14 is arranged outside the model in a dry place and is directly connected with the control terminal 3 through a signal wire. For convenient wiring, the flow velocity measuring rod 22 for measuring the flow velocity is wireless, the upper part of the probe is provided with a replaceable rechargeable battery and a wireless module, wireless signals can be sent to the flow velocity meter 14 in real time, and flow velocity data are transmitted to the control terminal 3 after signal conversion. Control terminal 3 is worth comparing according to preset's the speed of flow of not starting with the actual measurement velocity of flow, judges the increase and decrease of water supply flow, and by the frequency control of converter 4 again, realizes the reasonable regulation of 7 flows of second self priming pump for under the circumstances that the sediment was not started, the water is injected into to the adverse slope, does benefit to and stabilizes rivers.
The flow velocity measuring rod 22 is fixed below the support rod 21 and vertically suspended, a lower probe is arranged at a position to be measured, and the propeller direction needs to be arranged along the water flow direction, so that the flow velocity can be accurately measured.
The clear water tank 5 is a water supply container, and the upper part of the clear water tank is not provided with a cover, so that water can be supplemented in time. The bottom of the water tank is provided with a PVC pipe hole and a valve, and the volume of the water tank is about 1m3The two self-priming pumps are arranged outside the model, enter the water pump through the water inlet pipe and finally converge into the model through the water outlet pipe and the water distribution device, and each water pipe adopts a plastic hose.
In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a portable adverse slope rising water installation in river model movable bed district which characterized in that includes:
the water supply device is used for controlling the water supply flow by the control terminal;
the water diversion device is communicated with the water supply device and divides and homogenizes the water provided by the water supply device;
the water flow buffer device is arranged in a movable depression area, and the flow speed of the water flow is reduced by the flow-divided and homogenized water through the water flow buffer device;
and the flow velocity measuring device is arranged at the sand surface outside the water flow buffer device, measures the flow velocity of water flowing through the water flow buffer device and transmits the flow velocity data to the control terminal.
2. The movable bed area movable type counter-slope water expansion device for the river model according to claim 1, wherein the water supply device comprises a clean water tank, a first self-sucking pump and a second self-sucking pump, the rated flow of the first self-sucking pump is smaller than the rated flow of the second self-sucking pump, inlets of the first self-sucking pump and the second self-sucking pump are communicated with the clean water tank, outlets of the first self-sucking pump and the second self-sucking pump are communicated with the water distribution device, the second self-sucking pump is connected with a frequency converter, and the frequency converter is controlled by a control terminal.
3. The movable bed area movable type counter-slope water rising device of the river model according to claim 2, wherein the first self-sucking pump and the second self-sucking pump respectively take water from the clean water tank through respective water inlet pipes.
4. The movable bed area movable type counter-slope water rising device of the river model as claimed in claim 3, wherein each water inlet pipe is provided with a valve.
5. The movable bed area movable type counter-slope water rising device of the river model as claimed in claim 3, wherein a water return pipe is connected to a water outlet pipe of the first self-sucking pump, and the water return pipe leads into a clear water tank.
6. The movable bed area movable type counter-slope water rising device of the river model as claimed in claim 5, wherein a valve is installed on the water return pipe.
7. The movable bed movable type adverse slope water rising device of river engineering model according to claim 1, wherein the water diversion device comprises a water diversion box, a water collection hole for the water supply device to enter is formed in the water diversion box, a plurality of water diversion holes are formed in the bottom of the water diversion box, a water diversion pipe is connected to each water diversion hole, and the water diversion pipe extends to the position above the water flow buffering device.
8. The movable bed area movable type counter-slope water rising device of the river model as claimed in claim 7, wherein a hose is connected to the end of the water dividing pipe.
9. The movable type counter-slope water rising device for the river model moving bed area as claimed in claim 1, wherein the water flow buffering device is a rubber cushion, and the surface of the rubber cushion is provided with unsmooth wave-shaped stripes.
10. The movable bed area movable type adverse slope water rising device of the river model as claimed in claim 1, wherein the flow velocity measuring device adopts a flow velocity measuring rod and a flow velocity meter connected with the flow velocity measuring rod, and the flow velocity meter is connected to the control terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020311229.8U CN211973346U (en) | 2020-03-13 | 2020-03-13 | Movable type counter-slope water rising device for movable bed area of river model |
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| CN202020311229.8U CN211973346U (en) | 2020-03-13 | 2020-03-13 | Movable type counter-slope water rising device for movable bed area of river model |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236137A (en) * | 2020-03-13 | 2020-06-05 | 浙江省水利河口研究院 | Movable type counter-slope water rising device and method for river model moving bed area |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236137A (en) * | 2020-03-13 | 2020-06-05 | 浙江省水利河口研究院 | Movable type counter-slope water rising device and method for river model moving bed area |
| CN111236137B (en) * | 2020-03-13 | 2024-03-26 | 浙江省水利河口研究院 | River model moving bed area movable type reverse slope water rising device and method |
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