CN104751711A - Hydroelectric analogue simulation experimental device with two-dimensional motion platform measurement function - Google Patents
Hydroelectric analogue simulation experimental device with two-dimensional motion platform measurement function Download PDFInfo
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- CN104751711A CN104751711A CN201510172219.4A CN201510172219A CN104751711A CN 104751711 A CN104751711 A CN 104751711A CN 201510172219 A CN201510172219 A CN 201510172219A CN 104751711 A CN104751711 A CN 104751711A
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- 238000005259 measurement Methods 0.000 title claims abstract description 31
- 238000004088 simulation Methods 0.000 title abstract 6
- 238000002474 experimental method Methods 0.000 claims description 51
- 230000003321 amplification Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 3
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- 238000002791 soaking Methods 0.000 abstract 1
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- 230000005611 electricity Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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- 230000005236 sound signal Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
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- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
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Abstract
The invention discloses a hydroelectric analogue simulation experimental device with a two-dimensional motion platform measurement function. The hydroelectric analogue simulation experimental device comprises a model basin, a probe and a hydroelectric analogue simulation experimental instrument connected with the probe. An electricity-conducting two-dimensional motion platform is arranged on the model basin. An X-axis ruler and a Y-axis ruler are marked on the two-dimensional motion platform. The probe is mounted on the two-dimensional motion platform and is electrically connected with the two-dimensional motion platform. The hydroelectric analogue simulation experimental device has the advantages that the electricity-conducting two-dimensional motion platform is applied to the hydroelectric analogue simulation experimental device innovatively, a dragging guide line conventionally applied to the probe is omitted, and a drag-free guide line is used, so that the problem that a flow field is affected by the fact that the dragging guide line is prone to soaking is solved; the X-axis ruler and the Y-axis ruler are marked on the two-dimensional motion platform, so that the problem of measurement errors caused by the fact that the probe is out of plumb easily as being held by hands is solved; a full-scale amplification and regulation circuit is applied innovatively, equipotential line values, in percentage, of measuring points can be displayed directly by the experimental instrument, and manual conversion is not needed.
Description
Technical field
The present invention relates to teaching and experiment equipment field, be specifically related to the hydroelectric analoguesi-mulation experimental provision that a kind of nothing drags the band two-dimension moving platform taking wire to measure.
Background technology
Hydroelectric analoguesi-mulation experiment is one of experiment content of traditional allusion.This experiment is a kind of hydroelectric analoguesi-mulation experiment of simulating seepage flow flow field or Laminar Flow with electric current flow field, its experimental principle is that electric field and these two kinds of physical fields of seepage flow (laminar flow) field can describe with the mathematical equation of same form, namely be all same granny rag Lars equation, the master variable flow field of equation is head H, and electric field is voltage V.This experimental principle is theoretical ripe, and experimental technique allusion is credible, experiment purpose be measure and draw out the voltage V of simulated flow pattern 10%, 20% ... 90% totally 9 equipotential lines.
Traditional hydroelectric analoguesi-mulation experimental provision drags chaining pin, the grid millimeter coordinate paper of pond basin dianegative lower liner, ac voltage signal generator and the general-purpose voltage table etc. taking electric wire to form by model basin basin, band.In model basin basin, can place the flow field model that different experiments requires, model boundary material impervious to water is gone along with sb. to guard him and is formed, according to boundary condition, border is respectively arranged with height, zero equipotential cylinder manifold, and other borders are the non-conductive border that insulating material makes.Insulating material commonly uses glass plate, organic glass, asphalt mixture, plasticine and insullac etc. traditionally.The conduction liquid of 1-2 centimetre is had, as tap water or light salt brine in the model boundary of model basin basin.Experimental work voltage is connected respectively at the high low side of current potential cylinder manifold, polarize to prevent cylinder manifold, the high-frequency ac voltage of usual employing 1000-2000HZ, the no-voltage of low termination ground connection, high-end conventional 10V voltage traditionally, and the flow field voltage equipotential line in border is divided into 1V 9 equipotential lines of the 1-9V being interval, with 10% of simulated flow pattern, 20% ... the equipotential line of 90%.If operating voltage is not 10V, 9 equipotential lines, magnitude of voltage possibility non integer value, makes troubles in experiment measuring.When measuring these equipotential lines in flow field, as measured with multimeter, then the negative terminal of multimeter is connected on the cylinder manifold of zero potential, and vertically insert in conduction liquid with the high-end chaining pin of multimeter, mobile chaining pin searches out required voltage point, writes down the coordinate on the pond basin dianegative lower liner grid millimeter coordinate paper of chaining pin indication.Each equipotential line needs to measure nearly 10 measuring points by such as the method.Be decorated with the grid graph paper of model boundary figure again with one by a certain percentage, according to each measuring point coordinate, in proportion measuring point be labeled on the figure being decorated with model grid graph paper.By waiting measuring point of voltage to be linked to be a curve, draw the equipotential line in flow field.
Traditional experiment devices and methods therefor has the following disadvantages and defect:
1, measurement instrument needs loose mail to configure, and the 10V audio signal generator lacked needed for experiment, the in recent years same quasi-instrument of what is called energy output audio 10V voltage purchased of market, reality can export ceiling voltage and be only below 9V, a lot of multimeter frequency does not respond, and causes inconvenience to user.Develop a hydroelectric analoguesi-mulation electric pilot electronic product, the blank filling up this field is necessary.
2, traditional experiment device, its chaining pin all takes formula conductor wire with dragging, and has dragged a long-tail bar, when measuring in pond, drag on the other hand and take wire, arrest chaining pin on the other hand, moving when measuring in model basin basin seeks a little, both inconvenient, again because wire immersion or chaining pin out of plumb cause measuring error.The hope that this " drags the tail taken " and be experimenter is cut off with innovation.
3, in traditional experiment device, with the grid millimeter coordinate paper of pond basin dianegative lower liner as survey coordinate reading, in experiment, coordinate student is easy to misread in length and breadth.Especially as a kind of experiment device for teaching, this grid graph paper as coordinate paper, tangible technology grade not.Do not welcome by student very much, often suffer that teachers and students blame for.If develop a kind of simple and easy and measurement of coordinates system of practicality, meeting experimental teaching requirement, is highly significant.
4, full scale verification will repeatedly be carried out in experimentation, and the verification of conventional apparatus full scale is inconvenient with adjustment, if can increase full scale verification regulatory function, can be experiment and brings convenience.
Summary of the invention
The invention provides a kind of hydroelectric analoguesi-mulation experimental provision measured with two-dimension moving platform, that is innovated by the two-dimension moving platform measurement mechanism that can conduct electricity is applied in hydroelectric analoguesi-mulation experimental provision, wire is pulled when having cut off traditional use chaining pin, realize taking wire without dragging, overcome and pull wire and easily soak and affect the problem in flow field, two-dimension moving platform is marked with X-axis scale and Y-axis scale simultaneously, overcomes the problem of the measuring error that the easy out of plumb of hand-held chaining pin causes.
A kind of hydroelectric analoguesi-mulation experimental provision measured with two-dimension moving platform, the hydroelectric analoguesi-mulation experiment instrument comprising model basin basin, chaining pin and be connected with described chaining pin, described model basin basin is provided with the two-dimension moving platform of conduction, described two-dimension moving platform is marked with X-axis scale and Y-axis scale, and described chaining pin to be arranged on described two-dimension moving platform and to be electrically connected with described two-dimension moving platform.
In the present invention, adopting the two-dimension moving platform of conduction, when having cut off traditional use chaining pin, pull wire, realizing taking wire without dragging, be marked with X-axis scale and Y-axis scale at two-dimension moving platform, the position that X-axis scale and Y-axis scale read chaining pin directly and accurately can be led to.
Following as preferred structure of the present invention:
Described hydroelectric analoguesi-mulation experiment instrument, comprising: signal generator, amplifying circuit and A.C. voltmeter; Described model basin basin is provided with two conducting strips, is the first conducting strip and the second conducting strip;
Earth terminal one pole of described signal generator is connected with described second conducting strip, and another pole of described signal generator is connected with described first conducting strip;
The earthmeter end of described A.C. voltmeter is connected with described second conducting strip, and another measuring junction of described A.C. voltmeter is electrically connected with described chaining pin by described amplifying circuit.
Described hydroelectric analoguesi-mulation experiment instrument, also comprises: the digital display frequency meter be connected with described signal generator.For measuring the frequency of its signal generator.
Described signal generator can specifically adopt audio voltage generator.Described A.C. voltmeter can adopt the alternating voltage gauge outfit of band micro computer.
In hydroelectric analoguesi-mulation experiment instrument of the present invention, traditional amplifying circuit is used in hydroelectric analoguesi-mulation experiment instrument, close by the A.C. voltmeter head group of amplifying circuit with band micro computer, that innovates applies full scale amplification regulating circuit, and be integrated with signal generator and frequency measurement gauge outfit, devise a special hydroelectric analoguesi-mulation experiment instrument.Hydroelectric analoguesi-mulation experiment purpose be measure and draw out the supply voltage of simulated flow pattern 10%, 20% ... 90% totally 9 equipotential lines.Therefore, hydroelectric analoguesi-mulation experiment instrument undesired signal generator output voltage of the present invention whether standard 10v, actual measurement voltage or current potential is removed with voltage table or pot table, manually calculate 10% ~ 90% equipotential line value again, during use, generator output voltage is adjusted to 10v by amplifying circuit by hydroelectric analoguesi-mulation experiment instrument of the present invention, be input in the alternating voltage gauge outfit of band micro computer again, then in the alternating voltage gauge outfit of band micro computer, set constrained input and show 10 times of linear relationships, i.e. 0v-0, 5v-50, 10v-100, directly like this alternating voltage gauge outfit is become a special hydroelectric analoguesi-mulation experiment flow field equipotential line value indicator gauge, directly can measure the equipotential line value of the number percent demonstrating measuring point, without the need to manual conversion, the equipotential line point of convenient searching 10% ~ 90% in model basin basin, fill up the blank of hydroelectric analoguesi-mulation experiment measuring field instrument.
Described two-dimension moving platform comprises: two the Y-axis conductive sliders be fixedly mounted on two Y-axis conductiving slide rails of described model basin basin both sides, being slidably connected with described two Y-axis conductiving slide rails, the X-axis conductive slider being arranged on the X-axis conductiving slide rail on described two Y-axis conductive sliders and being slidably connected with described X-axis conductiving slide rail, described chaining pin is electrically connected with described X-axis conductive slider.
Described X-axis conductiving slide rail is vertical with Y-axis conductiving slide rail.
Described Y-axis scale is two, is marked on respectively on described two Y-axis conductiving slide rail limits.
Two described Y-axis conductive sliders are fixed with measurement bridge, and described X-axis scale is marked on described measurement bridge.
Set up the two-dimension moving platform of conduction by above-mentioned two-dimension moving platform, and X-axis scale and Y-axis scale are rationally set.
The two ends of described measurement bridge are connected with the first coaxial double grooved pulley and the second coaxial double grooved pulley, described model basin basin is provided with the first staple of rectanglar arrangement, second staple, 3rd staple and the 4th staple, first staple and the distribution of the 4th staple diagonal angle, second staple and the distribution of the 3rd staple diagonal angle, the adjacent both sides of this rectangle are parallel with Y-axis scale with X-axis scale respectively, first staple, second staple, 3rd staple is taken turns slip with the first coaxial double grooved pulley and the second coaxial double grooved pulley by first round slip and second with the 4th staple and is connected.
One free end of described first round slip is connected with described first staple, and another free end of described first round slip was fixed on described 4th staple after turning around the first groove in the described second coaxial double grooved pulley after turning around the first groove in the described first coaxial double grooved pulley again;
Described second free end of taking turns slip is connected with described second staple, and described second another free end of taking turns slip was fixed on described 3rd staple after turning around the second groove in the described second coaxial double grooved pulley after turning around the second groove in the described first coaxial double grooved pulley again.
Said structure can ensure to measure moving in parallel of bridge, ensures that chaining pin shows position accurately.
Compared with prior art, tool of the present invention has the following advantages:
That 1, is innovated by the two-dimension moving platform measurement mechanism that can conduct electricity being applied in hydroelectric analoguesi-mulation experimental provision, and the wire that pulls when having cut off traditional use chaining pin easily soaks and affects the problem in flow field, and the measuring error that the easy out of plumb of hand-held chaining pin causes.
2, in hydroelectric analoguesi-mulation experiment instrument of the present invention, close with A.C. voltmeter head group, that innovates applies full scale amplification regulating circuit, and be integrated with signal generator and frequency measurement gauge outfit, devise a special hydroelectric analoguesi-mulation experiment instrument, undesired signal generator output voltage whether standard 10v, voltage table or pot table remove actual measurement voltage or current potential, manually calculate 10% ~ 90% equipotential line value again, this experiment instrument directly just can demonstrate the equipotential line value of the number percent of measuring point, without the need to manual conversion, the equipotential line point of convenient searching 10% ~ 90% in experiment pool basin, fill up the blank of hydroelectric analoguesi-mulation experiment measuring field instrument.
3, as experiment instrument for teaching, the creativity consciousness of student can be inspired, useful to cultivation innovation ability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hydroelectric analoguesi-mulation experimental provision that band two-dimension moving platform of the present invention is measured;
Fig. 2 is the part-structure schematic diagram of the hydroelectric analoguesi-mulation experimental provision that band two-dimension moving platform of the present invention is measured;
Fig. 3 is the part-structure schematic diagram of the hydroelectric analoguesi-mulation experimental provision that band two-dimension moving platform of the present invention is measured;
Fig. 4 is the external structure schematic diagram of hydroelectric analoguesi-mulation experiment instrument in the present invention.
Embodiment
As depicted in figs. 1 and 2, for a kind of hydroelectric analoguesi-mulation experimental provision measured with two-dimension moving platform, the hydroelectric analoguesi-mulation experiment instrument 1 comprising model basin basin 2, chaining pin 7 and be connected with chaining pin 7, model basin basin 2 is provided with the two-dimension moving platform of conduction, two-dimension moving platform is marked with X-axis scale 5 and Y-axis scale 10, and chaining pin 7 to be arranged on two-dimension moving platform and to be electrically connected with two-dimension moving platform.
Two-dimension moving platform comprises: two the Y-axis conductive sliders 6 be fixedly mounted on two Y-axis conductiving slide rails 9 of model basin basin 2 both sides, being slidably connected with two Y-axis conductiving slide rails 9, the X-axis conductive slider 3 being arranged on the X-axis conductiving slide rail 16 on two Y-axis conductive sliders 6 and being slidably connected with X-axis conductiving slide rail 16, conductive slider 3 is slidably connected with X-axis conductiving slide rail 16 by conduction chute 8, and chaining pin 7 is electrically connected with X-axis conductive slider 3.X-axis conductiving slide rail 16 is vertical with Y-axis conductiving slide rail 9.Y-axis scale 10 is two, is marked on respectively on two Y-axis conductiving slide rail 9 limits.Two Y-axis conductive sliders 6 are fixed with and measure bridge 4, X-axis scale mark 5 is on measurement bridge 4.XY axis coordinate system is set up by X-axis scale mark 5 and Y-axis scale 10.
As shown in figures 1 and 3, the first staple 17 is not drawn in Fig. 1, second staple 18, 3rd staple 19, 4th staple 20 and first round slip 23 and second take turns slip 24, the two ends measuring bridge 4 are connected with the first coaxial double grooved pulley 21 and the second coaxial double grooved pulley 22, four edged surfaces of model basin basin 2 are provided with the first staple 17 of rectanglar arrangement, second staple 18, 3rd staple 19 and the 4th staple 20, first staple 17 and the distribution of the 4th staple 20 diagonal angle, second staple 18 and the distribution of the 3rd staple 19 diagonal angle, the adjacent both sides of this rectangle are parallel with Y-axis scale 10 with X-axis scale 5 respectively, first staple 17, second staple 18, 3rd staple 19 is taken turns slip 24 with the first coaxial double grooved pulley 21 and the second coaxial double grooved pulley 22 by first round slip 23 and second with the 4th staple 20 and is connected.One free end of first round slip 23 is connected with the first staple 17, and another free end of first round slip 23 was fixed on the 4th staple 20 after turning around the first groove in the second coaxial double grooved pulley 22 after turning around the first groove in the first coaxial double grooved pulley 21 again; Second free end of taking turns slip 24 is connected with the second staple 18, and second another free end of taking turns slip 24 was fixed on the 3rd staple 20 after turning around the second groove in the second coaxial double grooved pulley 21 after turning around the second groove in the first coaxial double grooved pulley 21 again.
As shown in Figure 1 and Figure 4, hydroelectric analoguesi-mulation experiment instrument 1, comprising: the condition selecting button 11 etc. of signal generator, amplifying circuit and A.C. voltmeter 13 (i.e. digital display full scale voltage percent value table), the digital display frequency meter 14 be connected with signal generator, full scale voltage adjusting knob 12 and full scale and flow field survey; Model basin basin 2 is provided with two conducting strips, is the first conducting strip and the second conducting strip; Earth terminal one pole of signal generator is connected with the second conducting strip, and another pole of signal generator is connected with the first conducting strip; The earthmeter end of A.C. voltmeter 13 is connected with the second conducting strip, and another measuring junction of A.C. voltmeter 13 is electrically connected with chaining pin 7 by amplifying circuit.A.C. voltmeter 13 specifically adopts the alternating voltage gauge outfit of band micro computer.The voltage that signal generator exports is amplified by full scale voltage adjusting knob 12 by amplifying circuit, realizes full scale voltage and regulates.Signal generator specifically adopts audio voltage generator, hydroelectric analoguesi-mulation experiment instrument 1 operating voltage is mains 220V, audio frequency full scale voltage is provided by conventional audio voltage generator, hydroelectric analoguesi-mulation experimental voltage is all can be used as at any audio voltage of below 20V, full scale voltage adjusting knob 12 and A.C. voltmeter 13 (i.e. digital display full scale voltage percent value table), have and the detection voltage transition in experimental voltage and flow field be the full scale voltage percent ratio of 0-100% and the function of real-time digital display; The full scale that condition selecting button 11 possesses in flow field survey process shows and calibration function.And the opening and closing that total power switch 15 carries out hydroelectric analoguesi-mulation experiment instrument 1 are set.
As shown in figures 1-4, it having power supply and the Full Featured hydroelectric analoguesi-mulation experiment instrument 1 of electricity regulation and control, having the model basin basin 2 of coordinate and conducting function, can move in parallel the measurement bridge 4 of coordinatometer, being with chaining pin 7 without dragging the X-axis conductive slider 3 taking wire.
Model basin basin 2 is a rectangular parallelepiped water tank, if rectangular parallelepiped surface level long side direction is X axis, minor face is Y direction.Along being outwards fixed with 2 blocks of rectangle wing plates isometric with minor face on the minor face of casing side, side by side parallel from inside to outside in wing plates on two sides, respectively be provided with the Y-axis scale 10 isometric with pond basin minor face and Y-axis conductiving slide rail 9 successively, and two Y-axis conductiving slide rails 9 of model basin basin 2 left and right sides are communicated with fixing cord, the measurement bridge 4 of the strip of X-direction is across above model basin basin 2, Y-axis conductive slider 6 frame connected by two ends is on the Y-axis conductiving slide rail 9 of model basin basin 2 both sides minor face wing plate, and can move along the Y-direction of Y-axis conductiving slide rail 9, Y-axis conductive slider 6 can conductive communication with Y-axis conductiving slide rail 9.
Measure bridge 4 and be provided with X-axis scale mark 5, X-axis conductiving slide rail 16 and X-axis conductive slider 3, X-axis conductive slider 3 is provided with conduction chute 8, and is slided with X-axis conductiving slide rail 16 be connected by conduction chute 8, can horizontally slip measuring on bridge 4 along X-direction.In addition, X-axis conductive slider 3 is also fixed with a vertical chaining pin 7, and the chaining pin 7 conduction chute 8 of wire and X-axis conductive slider 3 is connected.During experiment measuring, chaining pin 7, at the point position of model basin basin 2, is surveyed by X-axis scale 5 and Y-axis scale 10 and is read.On conductive path, the voltage signal that chaining pin records can to export to hydroelectric analoguesi-mulation experiment instrument 1 without the Y-axis conductiving slide rail 9 dragging the form of taking wire by model basin basin 2, Y-axis conductive slider 6, X-axis conductiving slide rail 16, conduction chute 8, X-axis conducting block 3.
By in order to realize measure bridge 4 along parallel smooth the moving around of Y-direction, translating device design is as Fig. 3, the first coaxial double grooved pulley 21 and the second coaxial double grooved pulley 22 is fixed with below the two ends measuring bridge 4, the axis of rolling of 2 coaxial double grooved pulleys is installed vertically on from the bottom up to be measured on bridge 4, four edged surfaces of pond basin respectively have a staple, be respectively first staple 17 in the upper left corner, second staple 18 in the lower left corner, 3rd staple 19 in the upper right corner, 4th staple 20 in the lower right corner, first pulley line 23 and the second pulley line 24 two are installed respectively and are strained and fixed as shown in Fig. 3 solid line and dotted line.Solid line represents: first pulley line 23 one end is fixed on first staple 17 in model basin basin 2 upper left corner, around the clockwise circle of the first coaxial double grooved pulley 21, again around the counterclockwise circle of the second coaxial double grooved pulley 22, finally, the other end is strained and is fixed on the 4th staple 20 in model basin basin 2 lower right corner.Another dotted line represents: second pulley line 24 one end is fixed on second staple 19 in the upper right corner, around the counterclockwise circle of the second coaxial double grooved pulley 22, again around the clockwise circle of a coaxial double grooved pulley 21, finally, the other end is strained and fixed on second staple 18 in model basin basin 2 lower left corner.Should remain when bracing wire and measure the parallel of bridge 4, make the left and right rod reading of model basin basin 2 equal.Free and relaxed when bracing wire degree of tightness should make 4 translation of measurement bridge, and left and right rod reading error is no more than+0.5 millimeter is advisable.
Hydroelectric analoguesi-mulation experiment instrument 1 is provided by the conventional low-frequency ac voltage signal generator of 1KHZ, hydroelectric analoguesi-mulation experimental voltage is all can be used as at any audio voltage of below 20V, full scale voltage adjusting knob 12 and A.C. voltmeter 13 (i.e. digital display full scale voltage percent value table), have and the detection voltage transition in experimental voltage and flow field be the full scale voltage percent ratio of 0-100% and the function of real-time digital display; The full scale that the condition selecting button 11 of full scale and flow field survey possesses in flow field survey process shows and calibration function.
For percolation model experiment under lock, on the left of the coboundary of model basin basin 2, two pieces of copper coins are installed respectively in right side, as voltage cylinder manifold.
The sound signal height low side of 1, being drawn by hydroelectric analoguesi-mulation experiment instrument 1 receives the high low side of cylinder manifold respectively, chaining pin line is received the terminals of the Y-axis conductiving slide rail 9 on model basin basin 2,
2, to fetch boiling water the total power switch 15 of electrical analogy experiment instrument 1, condition selecting button is pointed to full scale, regulates full scale voltage adjusting knob 12, make full scale voltage percent value table be shown as 100.0%.(real work magnitude of voltage is not 10V, is the arbitrary fixed value of 0.93V-8.26V in experiment).
3, traverse measurement bridge 4, motionless to the position needing to measure, record Y-coordinate value, then the X-axis conductive slider 3 that slides, finds respectively and records each point X-coordinate value of 10%-90%.And then traverse measurement bridge stops to the new position measured that needs, repeat said process, slip X-axis conductive slider 3, carries out survey record.
4, after the measuring point of each equipotential line necessity has all been measured, close hydroelectric analoguesi-mulation experiment instrument 1 general supply, experiment terminates.
Claims (9)
1. the hydroelectric analoguesi-mulation experimental provision measured with two-dimension moving platform, the hydroelectric analoguesi-mulation experiment instrument comprising model basin basin, chaining pin and be connected with described chaining pin, it is characterized in that, described model basin basin is provided with the two-dimension moving platform of conduction, described two-dimension moving platform is marked with X-axis scale and Y-axis scale, and described chaining pin to be arranged on described two-dimension moving platform and to be electrically connected with described two-dimension moving platform.
2. the hydroelectric analoguesi-mulation experimental provision of band two-dimension moving platform measurement according to claim 1, it is characterized in that, described hydroelectric analoguesi-mulation experiment instrument, comprising: signal generator, amplifying circuit and A.C. voltmeter; Described model basin basin is provided with two conducting strips, is the first conducting strip and the second conducting strip;
Earth terminal one pole of described signal generator is connected with described second conducting strip, and another pole of described signal generator is connected with described first conducting strip;
The earthmeter end of described A.C. voltmeter is connected with described second conducting strip, and another measuring junction of described A.C. voltmeter is electrically connected with described chaining pin by described amplifying circuit.
3. the hydroelectric analoguesi-mulation experimental provision of band two-dimension moving platform measurement according to claim 2, it is characterized in that, described hydroelectric analoguesi-mulation experiment instrument, also comprises: the digital display frequency meter be connected with described signal generator.
4. the hydroelectric analoguesi-mulation experimental provision of band two-dimension moving platform measurement according to claim 1, it is characterized in that, described two-dimension moving platform comprises: two the Y-axis conductive sliders be fixedly mounted on two Y-axis conductiving slide rails of described model basin basin both sides, being slidably connected with described two Y-axis conductiving slide rails, the X-axis conductive slider being arranged on the X-axis conductiving slide rail on described two Y-axis conductive sliders and being slidably connected with described X-axis conductiving slide rail, described chaining pin is electrically connected with described X-axis conductive slider.
5. the hydroelectric analoguesi-mulation experimental provision of band two-dimension moving platform measurement according to claim 4, it is characterized in that, described X-axis conductiving slide rail is vertical with Y-axis conductiving slide rail.
6. the hydroelectric analoguesi-mulation experimental provision of band two-dimension moving platform measurement according to claim 4, it is characterized in that, described Y-axis scale is two, is marked on respectively on described two Y-axis conductiving slide rail limits.
7. the hydroelectric analoguesi-mulation experimental provision of band two-dimension moving platform measurement according to claim 4, it is characterized in that, two described Y-axis conductive sliders are fixed with measurement bridge, and described X-axis scale is marked on described measurement bridge.
8. the hydroelectric analoguesi-mulation experimental provision of band two-dimension moving platform measurement according to claim 7, it is characterized in that, the two ends of described measurement bridge are connected with the first coaxial double grooved pulley and the second coaxial double grooved pulley, described model basin basin is provided with the first staple of rectanglar arrangement, second staple, 3rd staple and the 4th staple, first staple and the distribution of the 4th staple diagonal angle, second staple and the distribution of the 3rd staple diagonal angle, the adjacent both sides of this rectangle are parallel with Y-axis scale with X-axis scale respectively, first staple, second staple, 3rd staple is taken turns slip with the first coaxial double grooved pulley and the second coaxial double grooved pulley by first round slip and second with the 4th staple and is connected.
9. the hydroelectric analoguesi-mulation experimental provision of band two-dimension moving platform measurement according to claim 8, it is characterized in that, one free end of described first round slip is connected with described first staple, and another free end of described first round slip was fixed on described 4th staple after turning around the first groove in the described second coaxial double grooved pulley after turning around the first groove in the described first coaxial double grooved pulley again;
Described second free end of taking turns slip is connected with described second staple, and described second another free end of taking turns slip was fixed on described 3rd staple after turning around the second groove in the described second coaxial double grooved pulley after turning around the second groove in the described first coaxial double grooved pulley again.
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