CN207515994U - A kind of self-loopa wind-tunnel experimental provision - Google Patents
A kind of self-loopa wind-tunnel experimental provision Download PDFInfo
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- CN207515994U CN207515994U CN201721716016.8U CN201721716016U CN207515994U CN 207515994 U CN207515994 U CN 207515994U CN 201721716016 U CN201721716016 U CN 201721716016U CN 207515994 U CN207515994 U CN 207515994U
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Abstract
The utility model discloses a kind of self-loopa wind-tunnel experimental provisions.Water storage box is equipped with below its bottom part body, there is atomizer in case, atomizer is connect by smoke guide pipe with babinet, inside set many places rectification section, flow straightening grid is equipped in rectification section, the smoke guide pipe into babinet is equipped with behind flow straightening grid, it is detachable model loading tablet after smoke guide pipe, observation babinet is connect with loading tablet, detachable experiment package is equipped in babinet, it observes babinet both sides and is equipped with suspension parts, observe babinet rear connection outlet rectification section, flow straightening grid is equipped in outlet rectification section, condensate section is connected after exporting rectification section, it is provided with radiator, setting freezing machine below radiator, below freezing machine and in condensate section, equipped with condensate grid, collecting pipe is equipped with below condensate grid, flow diverter is equipped with after condensate section.The utility model design is light rationally, can visually demonstrate wind tunnel experiment, be the preferable instrument of modern teaching.
Description
Technical field
The utility model belongs to experimental demonstration instrument field, and in particular to a kind of self-loopa wind-tunnel experimental provision.
Background technology
Wind-tunnel, be can it is artificially generated and control air-flow, with the flowing of simulated flight device or object ambient gas, and can measure
For air-flow to the effect of object and a kind of pipe-like testing equipment of observation physical phenomenon, it is that progress aerodynamic experiment is most normal
With, most effective tool.Wind tunnel experiment has following four advantages：1. experiment condition can be relatively accurately controlled, such as the speed of air-flow
Degree, pressure, temperature etc.；It is carried out indoors 2. testing, the influence of climate condition and time are small, the peace of model and test equipment
Dress operates, using more convenient；3. experimental project and content are varied, the accuracy of experimental result is higher；4. experiment is compared
Safety, and it is efficient, at low cost.Therefore, wind tunnel experiment is studied, aerodynamic in terms of the development of various aircraft,
And it in the industrial aerodynamics field related with air-flow or wind with other, is all widely used.
Smoke flow method is a kind of most commonly seen wind-tunnel observation method, it is released on smoke pipe special in wind-tunnel or model
Plume shows mobile graphic of the gas around model.Many smoke wind tunnels have been built in countries in the world.Typically it is not easy a little in wind-tunnel outer grip
The mineral oil wire electrified regulation of combustion and the cigarette that generates introduces wind-tunnel；Also the stainless steel or tungsten filament that will be coated with oil are placed on mould
It is powered before type, during experiment and heats tungsten filament, generate fine and closely woven smog.In order to ensure that cigarette beam does not dissipate clearly, it is necessary to be shunk using big
Than contraction section, stable section or wind-tunnel entrance install anti-turbulent flow net additional and using measures such as the good material manufacture hole walls of vibration absorbing performance,
Holding plume is laminar condition.Smoke flow method removes the flowing for observing around model, may further be used to Measured Boundary layer transition point position
With research vortex structure.
However, usually using poisonous and hazardous smog as display medium in smoke flow method, end usually requires connection flue gas
Processing unit.And for small-sized instruments used for education, the operating cost and manufacture cost of flue gas processing device are all excessive, can not
It promotes the use of.And its use environment is typically the closing place such as classroom, and flue gas processing device can generate certain make an uproar again in itself
Sound pollution or other secondary pollutions, thus be not suitable for such wind tunnel device.
Invention content
The purpose of this utility model solves problems of the prior art, and provides a kind of self-loopa wind tunnel experiment dress
It puts.Specific technical solution is as follows used by the utility model：
Self-loopa wind-tunnel experimental provision, including demonstration box and air duct, air duct is in C fonts, and both ends are respectively communicated with demonstration box
Entrance and exit, formed circulation loop；The flow diverter for providing flue gas recirculation power is provided in air duct；Pacify in demonstration box
It is inserted with a block models and loads tablet, the hanging part for mounting test model is provided on model loading tablet；The demonstration
Entrance flow straightening grid is installed as entrance rectification section in the air duct before tank inlet, also pacifies in the air duct after demonstration box outlet
Equipped with outlet flow straightening grid；Freezing machine is installed in the air duct of outlet flow straightening grid rear end, as condensate section；The condensate of freezing machine
Grid is located in the condensate section in air duct, and the catchment area of condensate grid bottom is connected to by diversion pipe outside air duct；Rectification section
The smoke guide pipe of one end closing is provided between demonstration tank inlet, offers several outlet flues in smoke guide pipe, smoke guide pipe it is another
One end connects the fog outlet of atomizer, and atomizer is set to below the liquid level of water storage box.
Flue gas is used as using the water mist of atomizer generation in the smoke wind tunnel, it is sufficient to realize shown in small-sized wind tunnel experiment
The effect in flow field, and wind-tunnel is arranged to self-loopa form, the external disturbance in open wind-tunnel can be prevented, more favorably
Accurate, true flow location form is formed in inside.
Preferably, also being provided with bend flow straightening grid in each bent angle position in the air duct, bent angle position is susceptible to disorderly
Stream, it is therefore desirable to strengthen arranging.
Preferably, the demonstration box both sides are provided with the suspension parts for suspension, easily instrument can be hung
It is demonstrated on the wall.
Preferably, the air duct has one section of raised-diameter segment, the process of enlarged-diameter before entrance rectification section
In, air velocity is minimized, with reference to subsequent flow straightening grid, can enable to have originally the air-flow of disturbance turbulent flow smoothly into
Enter to demonstrate tank inlet.
Preferably, the water conservancy diversion pipe end is back in water storage box, the recycling of experimental water is realized.
Preferably, the radiator for heat dissipation is provided in the freezing machine so that condensate grid held stationary work
Make.
Preferably, every piece of flase floor is streamlined in each flow straightening grid, air-flow is disturbed in itself with reducing flase floor
It is dynamic.
It is installed on demonstration box preferably, the model loading tablet is detachable, can facilitate after having tested
Ground is dismounted.
Preferably, the flow straightening grid in the entrance rectification section is uniformly distributed on the cross section in air duct, keep whole
The air-flow flowed through in a cross section is steady.
Preferably, the outlet flue is uniformly distributed on the cross section of air duct, so that fog is evenly distributed.
In terms of existing technologies, it is as follows the advantages of the utility model：
1) poisonous and hazardous flue gas is replaced to carry out wind tunnel test with nontoxic water mist, water mist can clearly show gas
The fluidised form on test model periphery is flowed, while can be recycled after being intended for single use by condensing, is recycled.
2) test model is installed on by detachable model loading tablet on demonstration box, makes experiment is more convenient to replace experiment
Component.
3) this wind tunnel experiment instrument is designed as the circular experimental babinet of self-circulation type, has prevented the air interference stream outside babinet
State.
Description of the drawings
Fig. 1 is a kind of self-loopa wind-tunnel experimental provision structure diagram；
In figure：Air duct 1, bend flow straightening grid 2, entrance rectification section 3, outlet flue 4, model loading tablet 5, demonstration box 6, examination
It tests model 7, suspension parts 8, flow straightening grid 9, condensate section 10, radiator 11, freezing machine 12, condensate grid 13, diversion pipe 14, draw
Flow device 15, water storage box 16, atomizer 17, smoke guide pipe 18.
Specific embodiment
The utility model is further elaborated and illustrated below in conjunction with the accompanying drawings.Each embodiment in the utility model
Technical characteristic can carry out the corresponding combination under the premise of not conflicting with each other.
As shown in Figure 1, for a kind of self-loopa wind-tunnel experimental provision in the present embodiment, including air duct 1, bend honeycomb screen
Grid 2, entrance rectification section 3, outlet flue 4, model loading tablet 5, demonstration box 6, test model 7, suspension parts 8, flow straightening grid 9,
Condensate section 10, freezing machine 12, condensate grid 13, diversion pipe 14, flow diverter 15, water storage box 16, atomizer 17, is led at radiator 11
Smoke pipe 18.
Demonstration box 6 has transparent organic glass to be made, and internal flow location form can be seen from exterior washings.Demonstration box 6
Behind side wall by assign a block models load tablet 5 seal, the two is coordinated by card slot, realizes detachable fixation.Mould
Type loads tablet 5 using dark material, can understand the form for reflecting white water mist.It is set on model loading tablet 5 useful
Can be hook or plunger etc. in the hanging part of mounting test model 7.1 both sides of demonstration box are provided with the suspension for suspension
Component 8.Air duct 1 is in C fonts, and both ends are respectively communicated with the entrance and exit of gas passage in demonstration box 6, form circulation loop.Wind
Rectangular-ambulatory-plane construction is integrally formed in road 1 and demonstration box 6.
There is one section as entrance rectification section 3 in air duct before 6 entrance of demonstration box, on the cross section of entrance rectification section 3
Entrance flow straightening grid uniformly is installed, every flase floor is using streamlined, to reduce disturbance.Flase floor uniform cloth from top to bottom
If in cross-section.Outlet flow straightening grid 9 is also installed in the air duct after the outlet of demonstration box 6.Export 9 rear end of flow straightening grid
Also there is one section to be used as condensate section 10 in air duct, freezing machine 12 is installed in condensate section 10, the condensate grid 13 of freezing machine 12 is located at
In the condensate section 10 in air duct.The cooling assembly of freezing machine 12 continuously provides cold for condensate grid 13, in freezing machine 12
It is additionally provided with the radiator 11 for heat dissipation.Condensate grid 13 need to be made of waterproof material, may be used point with cooling assembly
Body formula structure can also use integrated cooling piece.
A smoke guide pipe 18 is provided between 6 entrance of rectification section 3 and demonstration box, smoke guide pipe 18 is located at the end in air duct 1
Closing, the other end stretch out air duct 1, connect the fog outlet of atomizer 17.Atomizer 17 is set to below the liquid level of water storage box 16.It leads
Several outlet flues 4 are offered on the part that smoke pipe 18 is located in air duct 1, outlet flue 4 is preferably uniformly distributed in air duct 1, and
Each outlet flue 4 can have valve control opening and closing, when needing to adjust smoke position, can be realized by controlled valve.Valve
Solenoid valve may be used in door, can also use the mechanical valve controlled manually.Smoke guide pipe 18 is preferably pacified in a manner of removable
In air duct 1.
13 bottom of condensate grid can set a water-collecting tray, be then connected to outside air duct 1 by diversion pipe 14.In order to
Realize recycling for water, diversion pipe 14 can be directly taken back in water storage box 16.Diversion pipe 14 leads steam from condensate grid 13
Go out to outside air duct 1, prevent steam in babinet from excessively influencing each assembly property in demonstration box 6, can also reduce in the water of test model 7
Drop attachment ensures that fluidised form is true.
It also needs to be provided with the flow diverter 15 for providing flue gas recirculation power in air duct 1.Flow diverter 15 may be used negative
Air extractor is pressed, preferably keeps certain distance with demonstration box 6, to avoid disturbance is generated.In the present embodiment, flow diverter 15 is set
In 10 rear of condensate section, the fluidised form in demonstration box 6 is made integrally to tend to be steady as far as possible.
In addition, the air duct tool in the present embodiment is also required to be equipped with bend flow straightening grid in each bent angle position there are four bent angle
2.Particularly at the air duct before entrance rectification section 3, other than in corner location setting bend flow straightening grid 2, it is also necessary to
It will be arranged to the form of diameter flaring herein.Because this, which is in bend, easily generates turbulent flow, and can be reduced after diameter flaring
Fluid velocity can eliminate these disturbances well with reference to the effect of flow straightening grid.Every piece of flase floor is most in each flow straightening grid
It measures streamlined.
The course of work of wind-tunnel in the present embodiment is：Flow diverter 15 is opened, starts to generate flow field in demonstration box 6, open
Atomizer 17, for air-flow by 2 stabilization of fluidized of bend flow straightening grid, water mist enters entrance rectification section 3 by smoke guide pipe 18, white
When water mist is by test model 7, the fluidised form of air-flow can be clearly observed, water mist stablizes gas again by outlet flow straightening grid 9
Stream enters condensate section 10, due to the effect by freezing machine 12 when water mist passes through condensate grid 13, passes through water conservancy diversion after congealing into droplet
Pipe 14 is exported outside demonstration box 6, and air then continues to recycle in air duct 1.
Embodiment described above is several preferable schemes of the utility model, and so it is not to limit this practicality
Technical solution novel, that all modes for taking equivalent substitution or equivalent transformation are obtained all falls within the protection model of the utility model
In enclosing.
Claims (10)
1. a kind of self-loopa wind-tunnel experimental provision, which is characterized in that including demonstration box (6) and air duct (1), air duct (1) is in C words
Shape, both ends are respectively communicated with the entrance and exit of demonstration box (6), form circulation loop；It is provided with to provide flue gas in air duct (1)
The flow diverter (15) of circulation power；A block models is assigned to load tablet (5) in demonstration box (6), model loading tablet is set on (5)
It is equipped with the hanging part for mounting test model (7)；Entrance rectification is installed in air duct before described demonstration box (6) entrance
Grid is also equipped with outlet flow straightening grid (9) as entrance rectification section (3) in the air duct after demonstration box (6) outlet；It exports whole
It flows in the air duct of grid (9) rear end and freezing machine (12) is installed, as condensate section (10)；The condensate grid (13) of freezing machine (12)
In the condensate section (10) in air duct, the catchment area of condensate grid (13) bottom is connected to air duct (1) by diversion pipe (14)
It is external；The smoke guide pipe (18) of one end closing is provided between rectification section (3) and demonstration box (6) entrance, smoke guide pipe opens up on (18)
There are several outlet flues (4), the fog outlet of the other end connection atomizer (17) of smoke guide pipe (18), atomizer (17) is set to storage
Below the liquid level of water tank (16).
2. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that in each bent angle position in the air duct
Equipped with bend flow straightening grid (2).
3. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that demonstration box (6) both sides setting
It is useful for the suspension parts (8) of suspension.
4. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that the air duct is in entrance rectification section
(3) there is one section of raised-diameter segment before.
5. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that diversion pipe (14) end reflux
Into water storage box (16).
6. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that be provided in the freezing machine (12)
For the radiator (11) of heat dissipation.
7. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that every piece of flase floor is equal in each flow straightening grid
It is streamlined.
8. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that the model loading tablet (5) can
Detachable is installed on demonstration box (6).
9. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that in the entrance rectification section (3)
Flow straightening grid is uniformly distributed on the cross section in air duct.
10. self-loopa wind-tunnel experimental provision as described in claim 1, which is characterized in that the outlet flue (4) is uniformly distributed
In on the cross section of air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721716016.8U CN207515994U (en) | 2017-12-11 | 2017-12-11 | A kind of self-loopa wind-tunnel experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721716016.8U CN207515994U (en) | 2017-12-11 | 2017-12-11 | A kind of self-loopa wind-tunnel experimental provision |
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| Publication Number | Publication Date |
|---|---|
| CN207515994U true CN207515994U (en) | 2018-06-19 |
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ID=62544000
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721716016.8U Active CN207515994U (en) | 2017-12-11 | 2017-12-11 | A kind of self-loopa wind-tunnel experimental provision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525479A (en) * | 2020-12-25 | 2021-03-19 | 武汉航空仪表有限责任公司 | Ice-proof and drainage device for corners of icing wind tunnel |
| CN112642510A (en) * | 2020-12-24 | 2021-04-13 | 重庆工业职业技术学院 | Experiment table for education and teaching |
-
2017
- 2017-12-11 CN CN201721716016.8U patent/CN207515994U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642510A (en) * | 2020-12-24 | 2021-04-13 | 重庆工业职业技术学院 | Experiment table for education and teaching |
| CN112525479A (en) * | 2020-12-25 | 2021-03-19 | 武汉航空仪表有限责任公司 | Ice-proof and drainage device for corners of icing wind tunnel |
| CN112525479B (en) * | 2020-12-25 | 2022-09-20 | 武汉航空仪表有限责任公司 | Ice-proof and drainage device for corners of ice wind tunnel |
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