CN206438462U - The high-velocity flow experimental rig of inherent filtration - Google Patents

Abstract

The utility model is related to waterpower Physics Experiments field, disclose the high-velocity flow experimental rig of inherent filtration, including the experimental tank with runner, the end of experimental tank is provided with filtering ponds, multiple grating type filter screens are provided with filtering ponds, grating type filter screen, which is met to runner, to be set, and filtering ponds are divided into filtering area and settling zone by grating type filter screen.Compared with prior art, by being provided with filtering ponds at the outlet water at tail end of experimental tank, some grating type filter screens are placed with filtering ponds, the water discharged from experimental tank is recycled after filtering and precipitation, it can avoid being washed ground sample contamination experiment water body, influence antiscour flow velocity test observation and measurement, in addition, periodically and irregularly filtering ponds and grating type filter screen can also be cleared up and cleaned, it is ensured that the cleaning of filtering ponds.

Description

The high-velocity flow experimental rig of inherent filtration

Technical field

The utility model is related to the high-velocity flow experimental rig of waterpower Physics Experiments field, especially inherent filtration.

Background technology

At present, dangerous section dangerous section, relate to river engineering where the antiscour flow velocity of section sediment of bed load and basement rock be river management The knowledge question of water conservancy that department and hydraulician pay close attention to, in being total to for flood period high flow rate current and river course complicated boundary condition Under same-action, river course major trough and side slope are also easy to produce vortex and unfavorable scour, it will bed material soil, silt and basement rock are produced not Profit is washed away, and influence relates to the security and stability of river engineering and Channel slope.

For different bed material soil, silt and basement rock, how to realize accurate, quick and easily measure various riverbeds and cover The antiscour characteristic and flow velocity of cap rock ground, are the important knowledge question of water conservancy that scientific research personnel needs to solve.

Due to the complexity of ground sample hydraulic characteristic, the antiscour hydraulics test equipment that each research unit sets up is each Characteristic, because usually experimental rig is generally not provided with sediment deposition filtering ponds, the ground sample particle being washed is to experiment Water circulation system and water body can produce certain pollution, influence antiscour flow velocity test observation and measurement.

Utility model content

The purpose of this utility model is the high-velocity flow experimental rig for providing inherent filtration, it is intended to solve in the prior art, Washed away in high-velocity flow experimental rig ground sample particle contamination experiment water circulation system, influence antiscour flow velocity test observation and The problem of measurement.

The utility model is achieved in that the high-velocity flow experimental rig of inherent filtration, including the experiment water with runner Groove, the end of the experimental tank, which is provided with filtering ponds, the filtering ponds, is provided with multiple grating type filter screens, the grating type Filter screen is met to runner and set, and the filtering ponds are divided into filtering area and settling zone by the grating type filter screen.

Further, lifting gate, the water (flow) direction along along the runner, institute are provided with the outlet water at tail end of the experimental tank State the rear that lifting gate is located at the filtering ponds.

Further, along the water (flow) direction in the runner, the front of the filtering ponds is provided with run-off, the run-off Downflow weir is provided between the filtering ponds.

Further, along the water (flow) direction in the runner, the runner includes sequentially connecting accelerating sections, the transition of arrangement Section and test section, the tapering width of the accelerating sections, the width of the changeover portion is into wide arrangement.

Further, the side of the accelerating sections is in line shape arrangement, and the arc shaped that opposite side shrinks into gradual change is arranged.

Further, provided with the groove for placing ground sample in the test section, the ground sample is placed on described recessed The bottom of groove.

Further, the rectangular shape of the upper end open of the groove.

Further, the trapezoidal shape in the longitudinal cross-section of the groove.

Further, the runner includes slow section, along the water (flow) direction of the runner, and the slow section is connected to described The front of test section, the width of the slow section gradually increases.

Further, the transparent shape of the experimental tank.

Compared with prior art, it is placed with by being provided with the outlet water at tail end of experimental tank in filtering ponds, filtering ponds Some grating type filter screens, the water discharged from experimental tank enters back into settling zone precipitation after filtering area grating type strainer filtering Posterior circle is used, and can avoid being washed ground sample contamination experiment water body, so as to influence antiscour flow velocity test observation and survey Amount, further, it is also possible to periodically and irregularly filtering ponds and grating type filter screen are cleared up and cleaned, it is ensured that filtering ponds it is clear It is clean.

Brief description of the drawings

Fig. 1 is the schematic top plan view of the high-velocity flow experimental rig for the inherent filtration that the utility model is provided；

Fig. 2 is the schematic front view of the high-velocity flow experimental rig for the inherent filtration that the utility model is provided.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain The utility model, is not used to limit the utility model.

Realization of the present utility model is described in detail below in conjunction with specific embodiment.

It is shown referring to Figures 1 and 2, provide preferred embodiment for the utility model.

The high-velocity flow experimental rig for the inherent filtration that the utility model is provided can be used in ground antiscour high speed waterpower Learn experimental technique field or be used on other waterpower physics technologies, be not limited in one of which.

The high-velocity flow experimental rig of inherent filtration, including the experimental tank 11 with runner, the end of experimental tank 11 is set It is equipped with filtering ponds 113, filtering ponds 113 and is provided with multiple grating type filter screens, grating type filter screen, which is met to runner, is set, grating type filter Filtering ponds 113 are divided into filtering area and settling zone by net.

Specifically, it is provided with filtering ponds 113, filtering ponds 113 and is met to runner side at the outlet water at tail end of experimental tank 11 To multiple grating type filter screens are provided with, multiple grating type filter screens are arranged in order, and closer to experimental tank 11, grating type filter screen Grid space it is bigger so that the ground that is mingled with washes away sample particle through multiple grating type filter screen filtrations in experiment water, improves Filter efficiency；Current through multiple grating type filter screens flow into settling zone precipitation, after filtering area grating type strainer filtering, may Can have a small amount of ground sample particle without filtering clean completely, after precipitation, can further cleaning test water, so as to keep away Exempt to be washed ground sample contamination experiment water body, and then influence antiscour flow velocity test observation and measurement.

Further, since grating type filter screen is used to filter current, permanent accumulation can block filter screen space, increase the stream of current Dynamic resistance, so, periodically or irregularly filtering ponds 113 and grating type filter screen can be cleared up and cleaned, so as to ensure The cleaning of filtering ponds 113.

Lifting gate 112 is provided with the outlet water at tail end of experimental tank 11, the water (flow) direction along along runner, lifting gate 112 is set In the rear of filtering ponds 113, lifting gate 112 can adjust the water level in experimental tank 11, can discharge unnecessary water So that the water in runner, which is entered, carries out filter operation in filtering ponds 113, by adjusting the height of lifting gate 112, control examination The depth of water of tank 11 is tested, can be needed according to experiment, it is ensured that the different heights of water level of experimental tank 11.

Along the water (flow) direction of runner, run-off 114, run-off 114 and filtering ponds 113 are provided with the front of filtering ponds 113 Between be provided with downflow weir 115, when the water level in filtering ponds 113 rises to the height of downflow weir 115, the water in filtering ponds 113 It can be overflowed in run-off 114 and stored by downflow weir 115, due to after the filtering of filtering ponds 113, flowing into run-off 114 In water be all the clean water that can be reused, so, the water in run-off 114 can be reclaimed, and can also be recycled.

The runner for stream flowing of supplying water is provided with experimental tank 11, runner is arranged along the length direction of experimental tank 11, runner Including the accelerating sections, changeover portion and test section being sequentially arranged, accelerating sections be current are accelerated, changeover portion be used for adjust suitable The straight current come out from accelerating sections, test section is used to carry out ground sample washout test, stream of the accelerating sections along runner water (flow) direction Arrangement is shunk in road bore gradual change, and the width of changeover portion is into wide arrangement, and the width of the width of changeover portion and the end of accelerating sections is in Wide arrangement.

Accelerating sections is arranged to along water (flow) direction, and the runner bore of accelerating sections, which is gradually tapered up, to narrow, and shrinks the accelerating sections narrowed It is docked and connected with the changeover portion of the wide arrangement of horizontal linear, during washout test, experiment current flow into runner, due to the stream of accelerating sections Road bore, which is gradually tapered up, to narrow, and gradually constriction and accelerates so flowing through the current of accelerating sections, flow rate of water flow gradually increases, and forms high Fast current, high-velocity flow adjusts straight through changeover portion again, forms stable high-velocity flow, and stable high-velocity flow steadily reaches examination Test section and carry out antiscour experiment.

Current are tested under the acceleration for the accelerating sections that gradual change is shunk, current gradually constriction and acceleration, then by transition After section adjustment is straight, arrival test section carries out the substantially anhydrous jump of current during washout test and aeration phenomenon, and then forms stabilization High-velocity flow, the flow velocity of high-velocity flow held stationary is realized to be washed away to the ground sample in test section bottom groove, passes through observation The situation through current scour of ground sample in groove, and then study the antiscour characteristic of observation ground sample.

The side of accelerating sections be in line shape arrangement, opposite side into arc shaped arrange, formed gradual change shrink arc-shaped structure, Under the guide functions for testing the accelerating sections that current shrink arc structure in gradual change, flow width gradually constriction, flow rate of water flow is continuous Increase so that the current after accelerated section of acceleration can form high-velocity flow.

Fluted 111 are set in test section, groove 111 is used to place ground sample, and groove 111 is arranged on the bottom of test section Portion, during placement, ground sample is placed in groove 111, and the top of ground sample is flushed with the bottom plate of test section, so, ground Sample convex would not be exposed on experimental tank 11, when current are washed away in test section, the groove of current scour to test section During 111 position, washout test flow section area will not reduce because of ground sample, so as to avoid ground sample periphery from producing Unstable whirlpool and stream, it is ensured that sample exposure is easy to observe washout test achievement in the uniformity of washout test water body, The uniformity of the observation of ground sample antiscour flow velocity test result and measurement can be ensured.

The rectangular shape of upper end open of groove 111, specifically, sets the groove 111 of rectangular shape, when ground sample is placed In bottom groove 111, ground sample will not reduce washout test flow section area, and ground sample periphery can be avoided to produce not Stablize whirlpool and stream, it is ensured that sample exposure is in the uniformity of washout test water body, it is ensured that ground sample antiscour flow velocity is tested The uniformity that achievement is observed and measured.

The trapezoidal shape in longitudinal cross-section of groove 111, specifically trapezoid structure, it is big top and small bottom, during washout test, ladder The bottom space of connected in star 111 is big, and top is small, can according to ground sample number, be pre-charged with the bottom of trapezoidal groove 111 Wooden unit body, to adjust the size of ground sample rest area rectangular recess 111 so that the bottom plate at the top of ground sample with test section is neat It is flat.

Runner includes slow section, and along the water (flow) direction of runner, slow section is connected to the front of test section, the width of slow section Gradually increase, the high-velocity flow from test section outflow is again through slow section buffer deceleration, it is to avoid cause current because flow rate of water flow is too high Spill outside water sample tank, can also avoid because flow rate of water flow is too high, current persistently pat the wall of experimental tank 11 and cause to test water Groove 11 is damaged.

Experimental tank 11 is set to clear glass tank, is specifically made of the lucite of clear, colorless, both can be with Guarantee test tank 11 has good perspectivity and higher intensity, also allows for the feelings that testing crew observes washout test at any time Condition.

In the present embodiment, the high-velocity flow experimental rig of inherent filtration also includes water supply cistern 13 and reclaims cistern 12, Water supply cistern 13 is used to supply water to experimental tank 11, reclaims the recovery that cistern 12 is used to test water.

Water supply cistern 13 is located at the top of experimental tank 11, when carrying out scouring experiment, due to the Action of Gravity Field of water, supplies Water in water cistern 13 can be flowed into spontaneously in the runner of experimental tank 11, it is not necessary to the extra powered by current Original paper, moreover, the water of the top of experimental tank 11 is in due to certain potential energy, when current flow downwardly into experimental tank 11, Potential energy can cause current to have certain flow velocity into kinetic energy, then be accelerated with this flow velocity into accelerating sections.

Reclaim cistern 12 to connect with run-off 114 by return pipe 122, moreover, being provided with water in cistern 12 reclaiming Pump 124, water pump 124 connects water supply cistern 13 by upper hose 121, and the water overflowed from run-off 114 is through return pipe 122 flow into recovery cistern 12, it is to avoid the waste of water resource, save water resource；Water pump is provided with cistern 12 reclaiming 124, the water water pump 124 reclaimed in cistern 12 is transported in water supply cistern 13 through upper hose 121, so as to realize experiment Water is recycled.

Water supply cistern 13 is connected by many connection water pipes 132 with experimental tank 11, and many connection water pipes 132 can be put down Row arrangement, not parallel can also be arranged, set many connection water pipes 132 to meet the current of big flow from water supply cistern 13 In the runner of middle entrance experimental tank 11, test period can be saved, is also beneficial to realize that different flow velocitys enter ground sample Row washout test.

Control valve 133 is equipped with many connection water pipes 132, when carrying out washout test, control valve 133 is opened, makes The water that must be supplied water in cistern 13 is entered in the runner of experimental tank 11, and whole rock is controlled by switching control pilot door 133 The progress of native anti-impact attribute testing.Connected at each on water pipe 132 and be both provided with control valve 133, by controlling every company Control valve 133 on water service pipe 132 connects water pipe 132 to control to open, if experiment needs flow rate of water flow than larger, just beats Kai Duogen connects the control valve 133 of water pipe 132, allows many connection water pipes 132 while being supplied water to experimental tank 11, if desired Flow rate of water flow is smaller, turns on a control valve 133, can be in order to adjusting the water velocity of water supply.

Overflow breach 131 is provided with the side wall of water supply cistern 13, overflow breach 131 is by overflow pipe 123 with reclaiming Cistern 12 is connected, during washout test, and the unnecessary water in water supply cistern 13 is back to recovery retaining by overflow breach 131 Pond 12, so as to save water resource, realizes recycling for experiment water.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (10)

1. the high-velocity flow experimental rig of inherent filtration, it is characterised in that including the experimental tank with runner, the experimental tank End be provided with filtering ponds, the filtering ponds and be provided with multiple grating type filter screens, the grating type filter screen, which is met to runner, to be set Put, the filtering ponds are divided into filtering area and settling zone by the grating type filter screen；Multiple grating type filter screen sequentials, and Closer to the experimental tank, the grid space of the grating type filter screen is bigger.

2. the high-velocity flow experimental rig of inherent filtration as claimed in claim 1, it is characterised in that the end of the experimental tank Lifting gate is provided with water outlet, the water (flow) direction along along the runner, the lifting gate is located at the rear of the filtering ponds.

3. the high-velocity flow experimental rig of inherent filtration as claimed in claim 2, it is characterised in that the current along in the runner Direction, the front of the filtering ponds is provided with run-off, and downflow weir is provided between the run-off and the filtering ponds.

4. the high-velocity flow experimental rig of inherent filtration as claimed in claim 3, it is characterised in that the current along in the runner Direction, the runner includes the accelerating sections, changeover portion and test section for sequentially connecting arrangement, and the width of the accelerating sections gradually contracts Small, the width of the changeover portion is into wide arrangement.

5. the high-velocity flow experimental rig of inherent filtration as claimed in claim 4, it is characterised in that the side of the accelerating sections into Linear arrangement, the arc shaped arrangement that opposite side shrinks into gradual change.

6. the high-velocity flow experimental rig of inherent filtration as claimed in claim 5, it is characterised in that be provided with and put in the test section The groove of ground sample is put, the ground sample is placed on the bottom of the groove.

7. the high-velocity flow experimental rig of inherent filtration as claimed in claim 6, it is characterised in that the upper end open of the groove Rectangular shape.

8. the high-velocity flow experimental rig of inherent filtration as claimed in claim 7, it is characterised in that the longitudinal cross-section of the groove Trapezoidal shape.

9. the high-velocity flow experimental rig of inherent filtration as claimed in claim 8, it is characterised in that the runner includes slow Section, along the water (flow) direction of the runner, the slow section is connected to the front of the test section, and the width of the slow section is gradually Increase.

10. the high-velocity flow experimental rig of inherent filtration as claimed in claim 9, it is characterised in that the experimental tank is in saturating Bright shape.