CN209103628U - A kind of reynolds test instrument - Google Patents
A kind of reynolds test instrument Download PDFInfo
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- CN209103628U CN209103628U CN201820307160.4U CN201820307160U CN209103628U CN 209103628 U CN209103628 U CN 209103628U CN 201820307160 U CN201820307160 U CN 201820307160U CN 209103628 U CN209103628 U CN 209103628U
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- water tank
- constant pressure
- pressure water
- pipe
- wall
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Abstract
The utility model discloses a kind of reynolds test instruments, including water tank, constant pressure water tank, overflow pipe, test pipe, tracer bottle, tracer bottle pipeline, collector pipe and collecting-tank, wherein, steady boom, differential manometer and watermeter flowing rate regulating valve are sequentially installed on the test pipe；Seepage flow wall, weir divider and seepage flow block are disposed in the constant pressure water tank；Overflow pipe is equipped with overflow launder Liquid level adjusting valve.The utility model effectively reduces existing internal disturbance when experiment, experiment time-consuming and error, substantially increases experimental precision and demonstrating effect.
Description
Technical field
The utility model relates to experiment teaching instrument more particularly to a kind of improved reynolds test instruments.
Background technique
Reynolds test instrument is the conventional teaching instrument used in the experimental teaching of the hydrodynamics or hydraulics in China, is used
In the flow characteristics and its transformation situation of observation laminar flow and turbulent flow, deepen the understanding to motion morphology.
When being tested using traditional reynolds test instrument, water flow enters constant water tank via water inlet pipe, and water reaches certain
It is flowed out after height along overflow pipe, meanwhile, the colored liquid in water flow and external tracer bottle flows into flowmeter by testing tube, passes through
The fluid state in flow velocity and testing tube in observation flowmeter obtains experiment conclusion, and in the prior art, the water tank passes through
Collector pipe is connected with collecting-tank, while water tank is connected by overflow pipe with constant pressure water tank；The external experimental channel of constant pressure water tank,
Experimental channel is connected by tracer bottle pipeline tracer bottle.
But when in the actual operation process, being ejected due to water flow from the upper hose nozzle of constant water tank, it can generate dark
Stream, fluctuation effect lead to the water and liquid fluctuating of entire constant pressure water tank storage, cause laminar flow and turbulent flow to mutually convert the stage and drill
Show ineffective；In addition, when the inflow of dashpot is greater than the liquid level of storage setting, can be spilt into excessive in constant water tank
Chute is back to water tank through overflow pipe, at this point, the liquid level of overflow launder is low, level head difference is big, and damping of shocks slot bottom causes to buffer
Liquid level vibrates in slot slot, and experimental precision is caused to reduce；Traditional experiment instrument is only capable of by by the water flow of instrument flow meter simultaneously
Amount valve rotation adjusts 90 ° to complete the coarse adjustment from maximum stream flow to closed state, and inconvenience control frequently results in laminar region and nearby surveys
Very few, the failure of an experiment of point；When reading the registration of differential manometer, often because of water flow fluctuation in experimental channel, lead to head in differential manometer
It is unstable, it can not precise measurement；Further, when measurement of discharge, two people is needed to cooperate to complete, if water receiving and clock not simultaneously into
Row, will generate error；In addition it tests in addition to needing reynolds test instrument, also to use the instruments such as electronic scale, beaker and stopwatch, step
It is rapid relatively complicated.
Utility model content
Purpose of utility model: the purpose of this utility model is to provide a kind of measuring accuracy height, demonstrating effects intuitively, just
In the reynolds test instrument for finely tuning and reducing manpower and material resources cost.
Technical solution: reynolds test instrument described in the utility model, including water tank, constant pressure water tank, overflow pipe, developmental tube
Road, tracer bottle, tracer bottle pipeline, collector pipe and collecting-tank, the water tank is connected by collector pipe with collecting-tank, while water tank
It is connected by overflow pipe with constant pressure water tank；The external experimental channel of constant pressure water tank, experimental channel pass through tracer bottle pipeline and tracer
Bottle is connected, it is characterised in that: steady boom, differential manometer and watermeter flowing rate regulating valve are sequentially installed on the test pipe；Institute
It states and is disposed with seepage flow wall, weir divider and seepage flow block in constant pressure water tank；Overflow pipe is equipped with overflow launder Liquid level adjusting valve.
Preferably, it is also connected with water pump between constant pressure water tank and water tank, water is pumped into from water tank by constant pressure water tank by water pump
It is interior.
Preferably, experimental channel overall length: distance=17:(1~5 of the watermeter flowing rate regulating valve away from experimental channel water outlet).
Preferably, seepage flow wall uses polyurethane sponge as material；Seepage flow wall height: constant pressure water tank inside wall height=7:(10
~13)；The weir divider height: constant pressure water tank inside wall height=9:(10~13).
Further, the pipeline overall length: steady distance=170:(1~5 of the boom away from constant pressure water tank outer wall)；Steady boom is total
Spacing between two layers, two layers: bottom width is 1:(7~11 in constant pressure water tank)；Circular hole is evenly distributed on steady boom；It is preferred that
Ground, circular hole are the consistent circular hole of several shape sizes.
Preferably, seepage flow block height: constant pressure water tank inside wall height=7:(10~13)；Seepage flow block width: in constant pressure water tank
Wall wide degree=7:(9~13)；Seepage flow block length: constant pressure water tank inner wall length=1:(2~3)；The seepage flow block material therefor is
Polyurethane sponge.
Further, it is preferable to ground, it is provided with overflow launder Liquid level adjusting valve on overflow pipe, away from pipe upper section 15cm.
The utility model has the advantages that compared with prior art, the utility model has the advantages that (1) setting overflow launder liquid level is adjusted
Liquid level in overflow launder is maintained certain altitude by valve, and the level head for reducing dashpot and overflow launder is poor；(2) setting is seeped
Stream block reduces impact of the overflow launder water flow to dashpot bottom, reduces the vibration of constant pressure water tank；(3) polyurethane sponge material is set
The seepage flow wall of matter, the generation of upper hose nozzle injection water is effectively eliminated by way of infiltration springs up undercurrent, reduces interior
Portion's water flow interference, so that the head of storage area is more stable；(4) steady boom is set and improves differential manometer head stability, is convenient for
Precise measurement；(5) setting watermeter flowing rate regulating valve can not only be finely adjusted flow in experimental channel, can also directly obtain
It is accurate to manage interior flow value, reduce human and material resources cost；It is above improve effectively reduce existing internal disturbance when experiment,
Experiment time-consuming and error, substantially increase experimental precision and demonstrating effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial structural diagram of constant pressure water tank in the utility model.
Fig. 3 is the transversal cross-section structural schematic diagram of steady boom in the utility model.
Specific embodiment
The technical solution of the utility model is described further with reference to the accompanying drawing.
As shown in Figure 1, Figure 2 and Figure 3, when carrying out the experiment of hydraulics, 2 water flow to be measured passes through the upper of water pump 3 in water tank
Water pipe enters the dashpot 20 of constant pressure water tank 14；Water flow a part infiltrates through in the seepage flow block 18 fixed by seepage flow partition 7, i.e.,
Overflow launder 19, by 5 reflow tank 2 of overflow pipe, effectively eliminate the generation of upper hose nozzle injection water springs up undercurrent, reduces
Water flow inside interference, so that the head of storage area 21 is more stable；Later, overflow launder Liquid level adjusting valve 15 is adjusted, by overflow
Liquid level in slot 19 maintains certain altitude, and the level head for reducing dashpot 20 and overflow launder 19 is poor, reduces overflow launder
Impact of the water flow to 20 bottom of dashpot, reduces the vibration of constant pressure water tank.Water flow another part, which is infiltrated through, to be surrounded by seepage flow wall 6
Permeable areas, i.e. storage area 21 are closed, test pipe 10 is flowed into；Test pipe 10 is provided with close to the end of constant pressure water tank 14
Steady boom 17, steady boom 17 have circular hole the vertical longitudinal cross-section of water (flow) direction is uniformly distributed, amount to 19, when water flow passes through two
Differential manometer head stability more orderly can be improved when the steady boom of layer, be convenient for precise measurement；Stablize flow velocity via steady boom
Water flow and colored liquid flow through differential manometer 11 and watermeter flowing rate regulating valve 12 jointly, by differential manometer 11 read pressure difference registration, by
Watermeter flowing rate regulating valve 12 is finely adjusted flow in experimental channel, and obtains accurately managing interior flow value, in summary real
Result is tested to draw a conclusion.
Claims (6)
1. a kind of reynolds test instrument, including water tank (2), constant pressure water tank (14), overflow pipe (5), test pipe (10), tracer bottle
(8), tracer bottle pipeline (9), collector pipe (13) and collecting-tank (16), it is characterised in that: successively pacify on the test pipe (10)
Equipped with steady boom (17), differential manometer (11) and watermeter flowing rate regulating valve (12)；Infiltration is disposed in the constant pressure water tank (14)
Flow wall (6), weir divider (7) and seepage flow block (18)；Overflow pipe (5) is equipped with overflow launder Liquid level adjusting valve (15).
2. a kind of reynolds test instrument according to claim 1, it is characterised in that: the constant pressure water tank (14) and water tank (2)
Between be also connected with water pump (3).
3. a kind of reynolds test instrument according to claim 1, it is characterised in that: test pipe (10) overall length compares water meter
Distance of the flow control valve (12) away from test pipe (10) water outlet is 17:(1~5).
4. a kind of reynolds test instrument according to claim 1, it is characterised in that: the seepage flow wall (6) uses polyurethane sponge
As material, seepage flow wall (6) is highly 7:(10~13 than constant pressure water tank (14) inside wall height)；Weir divider (7) height
It is 9:(10~13 than constant pressure water tank (14) inside wall height).
5. a kind of reynolds test instrument according to claim 1, it is characterised in that: pipeline (10) overall length is than steady boom
(17) distance away from constant pressure water tank (14) outer wall is 170:(1~5)；Spacing compares constant pressure between steady two layers totally, two layers of boom (17)
Water tank (14) interior bottom width is 1:(7~11)；Circular hole is evenly distributed on steady boom (17).
6. a kind of reynolds test instrument according to claim 1, characterized in that seepage flow block (18) height compares constant pressure water tank
(14) inside wall height is 7:(10~13)；Width is 7:(9~13 than constant pressure water tank (14) inner wall width)；Length is than constant pressure water tank (14)
Inner wall length is 1:(2~3)；Seepage flow block (18) material therefor is polyurethane sponge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820307160.4U CN209103628U (en) | 2018-03-06 | 2018-03-06 | A kind of reynolds test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820307160.4U CN209103628U (en) | 2018-03-06 | 2018-03-06 | A kind of reynolds test instrument |
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| Publication Number | Publication Date |
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| CN209103628U true CN209103628U (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820307160.4U Active CN209103628U (en) | 2018-03-06 | 2018-03-06 | A kind of reynolds test instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767046A (en) * | 2019-10-31 | 2020-02-07 | 长安大学 | Reynolds experiment instrument and method for observing turbulence characteristics |
-
2018
- 2018-03-06 CN CN201820307160.4U patent/CN209103628U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767046A (en) * | 2019-10-31 | 2020-02-07 | 长安大学 | Reynolds experiment instrument and method for observing turbulence characteristics |
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