CN108877429A - A kind of hydrodynamics comprehensive experimental device - Google Patents
A kind of hydrodynamics comprehensive experimental device Download PDFInfo
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- CN108877429A CN108877429A CN201810991865.7A CN201810991865A CN108877429A CN 108877429 A CN108877429 A CN 108877429A CN 201810991865 A CN201810991865 A CN 201810991865A CN 108877429 A CN108877429 A CN 108877429A
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Abstract
The invention discloses a kind of hydrodynamics comprehensive experimental devices, including body and the water tank of voltage regulation being mounted on body, water tank, metering water tank, survey pressing plate and experiment pipeline；Indicator bottle is mounted on water tank of voltage regulation, and indicator bottom of bottle portion passes through rubber tube and reynolds experiment pipeline connection；The inside of water tank of voltage regulation is equipped with vertical overflow plate and stabilier, and the bottom of water tank of voltage regulation passes through overflow pipe, water supplying pipe and water tank respectively and connects, and water pump is equipped with inside water tank, one end of water pump is connect with water supplying pipe.Hydrodynamics comprehensive experimental device of the invention can carry out following test：1) reynolds experiment；2) coefficient of partial resistance measurement experiment；3) Venturi meter measurement of discharge is tested；4) orifice flowmeter is tested；5) Pitot tube is tested；6) Bernoulli equation is tested；7) frictional resistant coefficient measurement experiment；Application method is simple, and measurement result is accurate, and market popularization value is high.
Description
Technical field
The present invention relates to a kind of experimental provision, specifically a kind of hydrodynamics comprehensive experimental device.
Background technique
Hydrodynamics is to struggle in the mankind with nature and gradually grow up in production practice.Hydrodynamics was both
Basic theory comprising natural science further relates to the application in terms of engineering technology file.Above is mainly from the angle of research object
Degree is to illustrate hydromechanical content and branch.In addition, can then be divided into hydrostatics, stream such as from the angle of fluid force
Body kinematics and fluid dynamics；Divide from the research to different " mechanical models ", then has ideal fluid dynamics, viscous fluid
Dynamics, incompressible flow body dynamics, compressible fluid dynamics and non-Newtonian fluid mechanic etc..
In order to observe fluid phenomenon, there is Hydromechanics experimental device, but current Hydromechanics experimental device function
Can be more single, reynolds experiment in hydrodynamic calculations, coefficient of partial resistance measurement experiment, venturi flow cannot be carried out simultaneously
Measure flux experiment, orifice flowmeter experiment, Pitot tube experiment, Bernoulli equation experiment and frictional resistant coefficient measurement experiment.
Therefore the present invention provides a kind of hydrodynamics comprehensive experimental device.
Summary of the invention
The purpose of the present invention is to provide a kind of hydrodynamics comprehensive experimental devices, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the present invention provides the following technical solutions：
A kind of hydrodynamics comprehensive experimental device, including body and the water tank of voltage regulation being mounted on body, water tank, metering water
Case surveys pressing plate and experiment pipeline；Indicator bottle is mounted on water tank of voltage regulation, and indicator bottom of bottle portion passes through rubber tube and reynolds experiment
Pipeline connection；The inside of water tank of voltage regulation be equipped with vertical overflow plate and stabilier, the bottom of water tank of voltage regulation pass through respectively overflow pipe,
Water supplying pipe is connect with water tank, water pump is equipped with inside water tank, one end of water pump is connect with water supplying pipe；It is set to and overflows at the top of the overflow pipe
Between flowing plate and the water tank of voltage regulation side wall of overflow plate side, the overflow plate other side is equipped with stabilier, is set to overflow at the top of water supplying pipe
Between plate and stabilier；It measures water tank and water tank is connected to by return pipe；
The experiment pipeline includes Bernoulli equation experiment pipeline, frictional resistant coefficient measurement experiment pipeline, Pitot tube reality
Test pipeline, orifice flowmeter experiment pipeline, Venturi meter measurement of discharge experiment pipeline, coefficient of partial resistance measurement experiment pipeline
With reynolds experiment pipeline, each one end for testing pipeline is connected to water tank of voltage regulation, and the other end for testing pipeline is set to metering water
Above case.
As a further solution of the present invention：The particle with current stabilization effect is equipped between the overflow plate and stabilier.
As a further solution of the present invention：The height of the overflow plate is greater than the height of stabilier.
As a further solution of the present invention：The hydrodynamics comprehensive experimental device further includes client；The instruction
Agent bottle, overflow pipe, water supplying pipe, return pipe, Bernoulli equation test pipeline, frictional resistant coefficient measurement experiment pipeline, Pitot tube
It tests pipeline, orifice flowmeter experiment pipeline, Venturi meter measurement of discharge and tests pipeline, coefficient of partial resistance measurement experiment pipe
Valve on road and reynolds experiment pipeline is connected to client, and water pump is also connected to client.
As a further solution of the present invention：The client is PC.
Compared with prior art, the beneficial effects of the invention are as follows：
Hydrodynamics comprehensive experimental device of the invention can carry out following test：1) reynolds experiment；2) local resistance system
Number measurement experiment；3) Venturi meter measurement of discharge is tested；4) orifice flowmeter is tested；5) Pitot tube is tested；6) Bernoulli Jacob side
Journey experiment；7) frictional resistant coefficient measurement experiment；Remote operation can be achieved, automatization level is high, and application method is simple, measurement knot
Fruit is accurate, and market popularization value is high.
Detailed description of the invention
Fig. 1 is the main view of hydrodynamics comprehensive experimental device.
Fig. 2 is the top view of hydrodynamics comprehensive experimental device.
Wherein：1- indicator bottle；2- water tank of voltage regulation；3- overflow pipe；4- water supplying pipe；5- water tank；6- water pump；7- return pipe；
8- measures water tank；9- surveys pressing plate；10- overflow plate；11- stabilier；12- Bernoulli equation tests pipeline；13- frictional resistant coefficient
Measurement experiment pipeline；14- Pitot tube tests pipeline；15- orifice flowmeter tests pipeline；16- Venturi meter measurement of discharge is real
Test pipeline；17- coefficient of partial resistance measurement experiment pipeline；18- reynolds experiment pipeline.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
Embodiment 1
A kind of hydrodynamics comprehensive experimental device referring to FIG. 1-2, including body and the water tank of voltage regulation being mounted on body
2, water tank 5, metering water tank 8, survey pressing plate 9, Bernoulli equation are tested pipeline 12, frictional resistant coefficient measurement experiment pipeline 13, are finished
Trustship tests pipeline 14, orifice flowmeter experiment pipeline 15, Venturi meter measurement of discharge and tests pipeline 16, coefficient of partial resistance
Measurement experiment pipeline 17 and reynolds experiment pipeline 18；Surveying pressing plate includes several pressure-measuring pipes；
Water tank of voltage regulation 2 is mounted on rack left upper end, and indicator bottle 1 is mounted on water tank of voltage regulation 2, and 1 bottom of indicator bottle is logical
Rubber tube is crossed to be connected to reynolds experiment pipeline 18；The inside of water tank of voltage regulation 2 is equipped with vertical overflow plate 10 and stabilier 11, overflow
Plate 10 is set to the left side of stabilier 11, and the bottom of water tank of voltage regulation 2 passes through overflow pipe 3 respectively, water supplying pipe 4 is connect with water tank 5, water tank
5 inside are equipped with water pump 6, and one end of water pump 6 is connect with water supplying pipe 4；Overflow plate 10 and water tank of voltage regulation are set at the top of the overflow pipe 3
Between 2 left walls, it is set between overflow plate 10 and stabilier 11 at the top of water supplying pipe 4；Metering water tank 8 is mounted on rack right end；Metering
Water tank 8 is connected to water tank 5 by return pipe 7；
Bernoulli equation experiment pipeline 12, frictional resistant coefficient measurement experiment pipeline 13, Pitot tube experiment pipeline 14,
Orifice flowmeter tests pipeline 15, Venturi meter measurement of discharge tests pipeline 16, coefficient of partial resistance measurement experiment pipeline 17
It is connected to water tank of voltage regulation 2 with one end of reynolds experiment pipeline 18, Bernoulli equation tests pipeline 12, frictional resistant coefficient measurement
It tests pipeline 13, Pitot tube experiment pipeline 14, orifice flowmeter experiment pipeline 15, Venturi meter measurement of discharge and tests pipeline
16, the other end of coefficient of partial resistance measurement experiment pipeline 17 and reynolds experiment pipeline 18 is set to 8 top of metering water tank.
Embodiment 2
On the basis of embodiment 1, the particle with current stabilization effect is equipped between the overflow plate 10 and stabilier 11.
Embodiment 3
On the basis of embodiment 1, the height of the overflow plate 10 is greater than the height of stabilier 11.
Embodiment 4
On the basis of embodiment 1, the hydrodynamics comprehensive experimental device further includes client, built in the client
App software；The indicator bottle 1, overflow pipe 3, water supplying pipe 4, return pipe 7, Bernoulli equation test pipeline 12, on-way resistance system
Number measurement experiment pipeline 13, Pitot tube experiment pipeline 14, orifice flowmeter experiment pipeline 15, the experiment of Venturi meter measurement of discharge
Valve on pipeline 16, coefficient of partial resistance measurement experiment pipeline 17 and reynolds experiment pipeline 18 is connected to client, water pump 6
It is also connected to client.In use, opening general supply, client is opened；By client choice experiment type, and open water pump
Water tank 5 is filled into water；Then it is tested, after the completion of experiment, experimental data or control printer work is saved by client；
Terminate to test by client, closes all valves, cut off the power.The client is PC.
1 reynolds experiment of experimental example
Using apparatus of the present invention and combine existing experimental method：Power on, opens 6 feed-tank 5 of water pump and supply water；To water
After water in case 5 starts overflow, the end valve of reynolds experiment pipeline 18 is gently opened, makes pipeline by small flow, then open instruction
Agent switch, makes color water inflow pipe；Slowly increase (or reduction) flow repeatedly, examines laminar flow and turbulent flow phenomenon.From big
Flow is slowly adjusted to small (or from small to large), in critical flow velocity (when fluidised form starts conversion), measures its Reynolds number.Experiment
After, indicator switch is first closed, water pump is then shut off, pulls out power supply.
1 reynolds experiment result of table
| It surveys secondary | Flow Q (cm3/s) | Flow velocity v (cm/s) | Reynolds number Re | State |
| 1 | 22.11 | 14.36 | 2242 | Straight line is swung |
| 2 | 19.36 | 12.58 | 1964 | Stability line |
| 3 | 22.32 | 14.50 | 2264 | Straight line is swung |
| 4 | 22.62 | 14.69 | 2294 | Straight line is swung |
2 coefficient of partial resistance measurement experiment of experimental example
Using apparatus of the present invention and combine existing experimental method：Power on, opens 6 feed-tank 5 of water pump and supply water；To water
After water in case 5 starts overflow, gas in purging line, pressure-measuring pipe, and whether the water level in pressure-measuring pipe is observed in same water
In plane.The end valve for opening coefficient of partial resistance measurement experiment pipeline 17 makes pipeline by water flow, and adjusts uninterrupted, makes
Piezometric level is in height appropriate.The piezometric head for measuring each section measures flow with measurement water tank.Check that data are errorless
Afterwards, change flow, measure again.It switches off the pump, pulls out power supply, terminate experiment.
2 coefficient of partial resistance measurement experiment result of table
3 pipe stream sudden enlargement calculation of local head loss table of table
Capillary diameter d1=1.4cm, extra heavy pipe diameter d2=2.0cm；4 pipe stream of table reduces calculation of local head loss table suddenly
Extra heavy pipe diameter d1=2.0cm, capillary diameter d2=1.4cm；
The experiment of 3 Venturi meter measurement of discharge of experimental example
Using apparatus of the present invention and combine existing experimental method：Power on, opens 6 feed-tank 5 of water pump and supply water；To water
After water in case 5 starts overflow, gas in purging line, pressure-measuring pipe closes end valve, the gas in purging line and pressure-measuring pipe
Body, until the water level reading of pressure-measuring pipe is equal.The end valve for opening Venturi meter measurement of discharge experiment pipeline 16, passes through pipeline
Larger flow, and the water level of pressure-measuring pipe can be read.After waterflow stabilization, start to measure piezometric level and flow, and remember
Record.The end valve for controlling Venturi meter measurement of discharge experiment pipeline 16, reduces flow, and piezometric level difference is made to reduce 4cm or so,
After waterflow stabilization, continue to measure.After surveying secondary be greater than 6 times, and Pressure difference distribution is uniform, and experiment can terminate.Close power supply.
5 Venturi meter measurement of discharge experimental result of table
| Serial number | h1(cm) | h2(cm) | h3(cm) | h4(cm) | Actual flow (cm3/s) |
| 1 | 41.42 | 0.7 | 48.08 | 30.85 | 153.08 |
| 2 | 39 | 3.9 | 38 | 7.85 | 132.7 |
| 3 | 32.7 | 9.4 | 33.1 | 14.78 | 109.9 |
| 4 | 30.8 | 12.6 | 29.8 | 19.0 | 88.6 |
| 5 | 27.5 | 16 | 26.1 | 14.4 | 62.6 |
Venturi tube cross section diameter, area：d1=1.4cm, d2=0.8cm；
6 Venturi meter measurement of discharge experimental result of table
The experiment of 4 orifice flowmeter of experimental example
Using apparatus of the present invention and combine existing experimental method：Power on, opens 6 feed-tank 5 of water pump and supply water；Hole
Air before and after flowmeter in pressure stabilizing chamber drains.The small valve of two pressure taps is opened, is tested.Regulating water inlet valve door and outlet valve
Door, makes manometer maximum differential pressure occur, tests as first time, gradually turns flow down later, reduces pressure difference and (reduces 10cm every time
Left and right) it is tested.
7 orifice flowmeter experimental result of table
| N0 | h1(cm) | h2(cm) | △h(cm) | Q0(cm3/s) | μ |
| 1 | 52.12 | 51.87 | 0.25 | 20.87 | 0.1115 |
| 2 | 52.10 | 51.72 | 0.38 | 30.61 | 0.2360 |
| 3 | 52.10 | 51.53 | 0.57 | 38.96 | 0.2374 |
| 4 | 52.04 | 51.16 | 0.88 | 51.48 | 0.2510 |
| 5 | 52.04 | 50.92 | 1.12 | 58.43 | 0.2538 |
| 6 | 52.01 | 50.53 | 1.48 | 66.78 | 0.2527 |
| 7 | 51.99 | 50.30 | 1.69 | 72.35 | 0.2559 |
Wherein, △ h is pressure difference before and after orifice plate.
The experiment of 5 Pitot tube of experimental example
Using apparatus of the present invention and combine existing experimental method：Water pump is opened, flow is adjusted to maximum.It excludes in time
Pitot tube and the gas in communicating pipe, can be tested.Change flow velocity, can get three kinds of different constant water levels and respective streams
Speed makees the experimental implementation of different operating conditions.The flow velocity point of ozzle submerged jets is observed with vertical change point position along longitudinal direction respectively
Cloth.Experimental record and calculating are inserted into table, write out laboratory report.
8 trustship experimental result of table
The experiment of 6 Bernoulli equation of experimental example
Using apparatus of the present invention and combine existing experimental method：Water supply is turned on the switch, water tank is made to be filled with water to water tank overflow.
Whether all piezometric surfaces flush after checking regulating valve closing.It needs to find out that failure cause (is obstructed, is leaked example communicating pipe if uneven
Gas or gas enclosure bubble etc.) and excluded, until leveling.The tail portion regulating valve for opening Bernoulli equation experiment pipeline 12, adjusts it
Aperture is surveyed after stability of flow and remembers each piezometric surface reading, while surveying and remembering that (Pitot tube is for demonstrating, it is not necessary to survey note for empirical flow
Reading).Change flow 2 times, repeats above-mentioned measurement.Wherein a valve opening, which arrives greatly, makes No. 13 test tube liquid levels close to scale zero
Point.Experiment terminates, and switches off the pump, arranging desktop.
9 Bernoulli equation experimental result of table
10 Bernoulli equation experimental result of table
7 frictional resistant coefficient measurement experiment of experimental example
Using apparatus of the present invention and combine existing experimental method：Power on, opens water pump feed-tank and supply water.Until water
After starting overflow, the gas in pressure-measuring pipe is excluded.The end valve of frictional resistant coefficient measurement experiment pipeline 13 is opened to the maximum, at this moment
The maximum flow that experimental channel passes through, the liquid level difference of pressure-measuring pipe are maximum (i.e. pressure difference is maximum).After waterflow stabilization, start measuring flow
And pressure difference, and record.Reduce the end valve aperture of frictional resistant coefficient measurement experiment pipeline 13, reduce empirical flow, pressure difference subtracts
A small amount of controls are after 4cm or so (i.e. pressure difference reduced 2cm than last time), waterflow stabilization, then start to measure water temperature, flow and pressure difference,
And it records.It repeats to test, each pressure difference decline will uniformly, until flow is 0.After checking that data are errorless, power supply is closed, is terminated real
It tests.Caliber d=1.4cm tests segment length L=120cm.
11 frictional resistant coefficient measurement experiment result of table
Note：First high h1, high h eventually2Refer to the water level in measurement water tank.
It should be strongly noted that exerting sharp equation experiment pipeline 12, frictional resistant coefficient measurement experiment pipeline in the application
13, Pitot tube experiment pipeline 14, orifice flowmeter experiment pipeline 15, Venturi meter measurement of discharge experiment pipeline 16 and part resistance
Force coefficient measurement experiment pipeline 17 is the application of the prior art, obtains various experiment pipelines are compound a kind of comprehensive experimental device and is
The innovative point of the application solves the problems, such as to have a single function.
The preferred embodiment of the patent is described in detail above, but this patent is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be under the premise of not departing from this patent objective
Various changes can be made.
Claims (5)
1. a kind of hydrodynamics comprehensive experimental device, which is characterized in that including body and the water tank of voltage regulation being mounted on body
(2), water tank (5), metering water tank (8), survey pressing plate (9) and experiment pipeline；Indicator bottle (1) is mounted on water tank of voltage regulation (2), is referred to
Show that agent bottle (1) bottom is connected to by rubber tube with reynolds experiment pipeline (18)；The inside of water tank of voltage regulation (2) is equipped with vertical overflow
Plate (10) and stabilier (11), the bottom of water tank of voltage regulation (2) passes through overflow pipe (3) respectively, water supplying pipe (4) is connect with water tank (5),
Water pump (6) are equipped with inside water tank (5), one end of water pump (6) is connect with water supplying pipe (4)；Overflow is set at the top of the overflow pipe (3)
Between plate (10) and water tank of voltage regulation (2) side wall of overflow plate (10) side, overflow plate (10) other side is equipped with stabilier (11), supplies
It is set between overflow plate (10) and stabilier (11) at the top of water pipe (4)；Metering water tank (8) is connected to water tank by return pipe (7)
(5)；
The experiment pipeline includes Bernoulli equation experiment pipeline (12), frictional resistant coefficient measurement experiment pipeline (13), Pitot
Pipe tests pipeline (14), orifice flowmeter experiment pipeline (15), the experiment of Venturi meter measurement of discharge pipeline (16), local resistance
Coefficient determination tests pipeline (17) and reynolds experiment pipeline (18), and each one end for testing pipeline is connected to water tank of voltage regulation (2), real
The other end for testing pipeline is set to above metering water tank (8).
2. hydrodynamics comprehensive experimental device according to claim 1, which is characterized in that the overflow plate (10) and current stabilization
The particle with current stabilization effect is equipped between plate (11).
3. hydrodynamics comprehensive experimental device according to claim 1, which is characterized in that the height of the overflow plate (10)
Greater than the height of stabilier (11).
4. hydrodynamics comprehensive experimental device according to claim 1, which is characterized in that the hydrodynamics Comprehensive Experiment
Device further includes client；The indicator bottle (1), overflow pipe (3), water supplying pipe (4), return pipe (7), Bernoulli equation experiment
Pipeline (12), frictional resistant coefficient measurement experiment pipeline (13), Pitot tube experiment pipeline (14), orifice flowmeter test pipeline
(15), Venturi meter measurement of discharge experiment pipeline (16), coefficient of partial resistance measurement experiment pipeline (17) and reynolds experiment pipe
Valve on road (18) is connected to client, and water pump (6) is also connected to client.
5. hydrodynamics comprehensive experimental device according to claim 1 to 4, which is characterized in that the client is
PC。
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109410717A (en) * | 2018-12-20 | 2019-03-01 | 嘉兴学院 | A kind of multi-functional fluid experiment of machanics platform being convenient for changing measured tube |
| CN109712492A (en) * | 2019-01-17 | 2019-05-03 | 郑州轻工业学院 | A kind of full-automatic real-time monitoring reynolds experiment instructional device |
| CN110220575A (en) * | 2019-07-02 | 2019-09-10 | 西南交通大学 | A kind of device measuring Venturi meter coefficient |
| CN110277007A (en) * | 2019-07-23 | 2019-09-24 | 顺德职业技术学院 | A fluid mechanics experiment device |
| CN110570732A (en) * | 2019-08-29 | 2019-12-13 | 河海大学 | A high-precision hydraulic pipe flow test bench |
| CN111862738A (en) * | 2020-07-02 | 2020-10-30 | 桂林理工大学 | Remote controllable local drag loss experimental platform |
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| CN109410717A (en) * | 2018-12-20 | 2019-03-01 | 嘉兴学院 | A kind of multi-functional fluid experiment of machanics platform being convenient for changing measured tube |
| CN109712492A (en) * | 2019-01-17 | 2019-05-03 | 郑州轻工业学院 | A kind of full-automatic real-time monitoring reynolds experiment instructional device |
| CN110220575A (en) * | 2019-07-02 | 2019-09-10 | 西南交通大学 | A kind of device measuring Venturi meter coefficient |
| CN110220575B (en) * | 2019-07-02 | 2020-09-22 | 西南交通大学 | A device for measuring flow coefficient of venturi flowmeter |
| CN110277007A (en) * | 2019-07-23 | 2019-09-24 | 顺德职业技术学院 | A fluid mechanics experiment device |
| CN110570732A (en) * | 2019-08-29 | 2019-12-13 | 河海大学 | A high-precision hydraulic pipe flow test bench |
| CN111862738A (en) * | 2020-07-02 | 2020-10-30 | 桂林理工大学 | Remote controllable local drag loss experimental platform |
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| CN112349187A (en) * | 2020-12-08 | 2021-02-09 | 南京工业大学 | Assembled hydrodynamics comprehensive experiment device |
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| CN113077691B (en) * | 2021-03-09 | 2022-06-28 | 浙江大学 | Experiment teaching device for researching object streaming problem |
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Application publication date: 20181123 |