CN206656846U - A kind of small agricultural single flow low-speed wind tunnel - Google Patents
A kind of small agricultural single flow low-speed wind tunnel Download PDFInfo
- Publication number
- CN206656846U CN206656846U CN201720501822.7U CN201720501822U CN206656846U CN 206656846 U CN206656846 U CN 206656846U CN 201720501822 U CN201720501822 U CN 201720501822U CN 206656846 U CN206656846 U CN 206656846U
- Authority
- CN
- China
- Prior art keywords
- air
- chamber
- single flow
- wind tunnel
- flow low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Test air tunnel technical field is the utility model is related to, more particularly, to a kind of small agricultural single flow low-speed wind tunnel, including air-inlet cavity, contraction chamber, current stabilization chamber, diffusion chamber and the air-out chamber being detachably connected successively；Motor, propeller and control unit are provided with the air-inlet cavity, motor is electrically connected with control unit, and the output shaft of motor is connected with propeller；The current stabilization intracavitary is provided with honeycomb and damping screen perpendicular to wind direction, and is located at the front of damping screen according to wind direction honeycomb；The air velocity transducer electrically connected with control unit is provided with the air-out chamber；The rotating speed for the blast velocity control motor that control unit detects according to air velocity transducer.A kind of small agricultural single flow low-speed wind tunnel of the utility model, simple in construction, small volume, manufacturing cost is low, and dismounting assembling is flexible, is adapted to use indoors, can meet droplet drift experiment and the environmental requirement of surroundings wind field simulated test.
Description
Technical field
Test air tunnel technical field is the utility model is related to, it is low more particularly, to a kind of small agricultural single flow
Fast wind-tunnel.
Background technology
The use of agricultural chemicals is to control the important means of disease pest and weed.At present, plant protection unmanned plane sprays dispenser by low latitude, can be fast
Speed efficiently completes the preventing and treating of disease pest and weed, has operating efficiency high, it is possible to increase the advantages that pesticide efficacy.But due to
The influence of aerial work condition and air-flow, unmanned plane spraying operation easily produce agricultural chemicals drift, it will produce agricultural chemicals waste and ring
The problems such as border is polluted, reduce float of mist droplet, improve deposition of the agricultural chemicals on target as Chinese plant protection pesticide application technology field
Research emphasis.The research meanses of droplet drift at present are mainly field test and wind tunnel test, due to the environment in field test
Wind speed and direction is uncontrollable during actual job, causes experiment repetition otherness big, and uses wind tunnel test mould
Intend field actual job condition, can the accurate job parameter such as controlled wind speed, wind direction, external condition can be avoided to test repeatability
Influence, so as to instruct application of the plant protection unmanned plane in produce reality.But current wind-tunnel is mostly complicated, volume is huge
Greatly, manufacturing cost is high, and dismantles assembling inconvenience, is not suitable for using indoors, and this restricts droplet drift experiment and ambient wind significantly
The progress of field stimulation experiment.
The content of the invention
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of small agricultural single flow low speed
Wind-tunnel, simple in construction, small volume, manufacturing cost is low, and dismounting assembling is flexible, is adapted to use indoors, can meet droplet drift examination
Test and the environmental requirement of surroundings wind field simulated test.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of small agricultural single flow low-speed wind tunnel is provided, including be detachably connected successively air-inlet cavity, contraction chamber,
Current stabilization chamber, diffusion chamber and air-out chamber；Motor, propeller and control unit, motor and control unit electricity are provided with the air-inlet cavity
Connection, the output shaft of motor are connected with propeller；The current stabilization intracavitary is provided with honeycomb and damping screen perpendicular to wind direction,
And it is located at the front of damping screen according to wind direction honeycomb；The wind speed electrically connected with control unit is provided with the air-out chamber to pass
Sensor；The rotating speed for the blast velocity control motor that control unit detects according to air velocity transducer.Four sides of honeycomb respectively with surely
Four inwalls connection of chamber is flowed, four sides of damping screen are connected with four inwalls of current stabilization chamber respectively.
In such scheme, the driving propeller air-supply of control unit controlled motor, more stable gas is produced by contraction chamber
Enter current stabilization chamber after stream, then pass sequentially through the honeycomb in current stabilization intracavitary portion and damping screen carries out the steady of rectification output low turbulence
It is fixed distinguished and admirable, then uniform air-flow is produced by diffusion chamber, finally enter in air-out chamber, air velocity transducer detects wind speed and passed in real time
Pass control unit, control unit is according to the rotating speed of the blast velocity control motor detected, to ensure that wind speed is stable.The utility model
A kind of small agricultural single flow low-speed wind tunnel, simple in construction, small volume, manufacturing cost is low, and dismounting assembling is flexible, is adapted to
Indoor use, droplet drift experiment and the environmental requirement of surroundings wind field simulated test can be met.
Preferably, the air inlet of the air-inlet cavity is provided with screen pack.Energy filtering inlet air chamber air inlet is so set
Debris, prevent that debris from hindering the smooth rotation of propeller, and then can guarantee that the wind field environment of more preferable simulation actual job.Enter one
Preferably, the screen pack is wire netting to step；So set and can ensure that the intensity of screen pack, prevent screen pack deform easily and then
Influence filter effect.
Preferably, honeycomb and damping screen are respectively two groups, and honeycomb and damping screen are arranged in a crossed manner.Honeycomb includes the
One honeycomb and the second honeycomb, damping screen include the first damping screen and the second damping screen, the first honeycomb, the first damping screen,
Second honeycomb and the second damping screen are set gradually.It is more preferable that honeycomb can make current stabilization chamber air outlet go out to flow orientation consistency, reduces
Distinguished and admirable turbulivity, damping screen not only can be more uniformly distributed the distinguished and admirable speed on section, and can be incident wind flow toward normal
Direction reflects, and then further reduces distinguished and admirable turbulence intensity.Honeycomb and damping screen are respectively set to two groups and intersected set
Put, the low turbulence and stability of the air-flow of current stabilization chamber output can be further ensured that.
Preferably, the percent opening of damping screen is 0.33.Percent opening is lower, and rectification effect is more notable, so sets and can guarantee that
Rectification effect.
Preferably, the wall portion of air-inlet cavity, contraction chamber, current stabilization chamber, diffusion chamber and air-out chamber is galvanized iron sheet structure.So
The intensity of the small-sized DC formula low-speed wind tunnel can be further ensured that by setting, and be easy to being smoothed out for experiment.
Preferably, it is equipped with angle bar support frame in air-inlet cavity, contraction chamber, current stabilization chamber, diffusion chamber and air-out chamber.So set
Air-inlet cavity, contraction chamber, current stabilization chamber, diffusion chamber and air-out chamber can be preferably supported, is easy to being smoothed out for experiment.
Preferably, in addition to fastener, fastening is passed through between air-inlet cavity, contraction chamber, current stabilization chamber, diffusion chamber and air-out chamber
Part connects.The assembly and disassembly between cavity are easy in the setting of fastener.It is further preferred that the fastener is screw.
Preferably, contraction chamber is consistent with the size of diffusion chamber.So setting reduces one of production process, is easy to wind-tunnel
Make.
Compared with prior art, the beneficial effects of the utility model are：
A kind of small agricultural single flow low-speed wind tunnel of the utility model, control unit controlled motor driving propeller are sent
Wind, enter current stabilization chamber after contraction chamber produces more stable air-flow, then pass sequentially through current stabilization intracavitary portion honeycomb and
Stablizing for damping screen progress rectification output low turbulence is distinguished and admirable, then produces uniform air-flow by diffusion chamber, finally enters air-out
Intracavitary, air velocity transducer detect wind speed and pass to control unit in real time, and control unit is according to the blast velocity control motor detected
Rotating speed, to ensure that wind speed is stable, the small-sized DC formula low-speed wind tunnel, simple in construction, small volume, manufacturing cost is low, dismounting group
Dress is flexible, is adapted to use indoors, can meet droplet drift experiment and the environmental requirement of surroundings wind field simulated test；By entering
The air inlet of wind chamber sets screen pack, the debris of energy filtering inlet air chamber air inlet, prevents debris from hindering the smooth of propeller
Rotate, and then can guarantee that the wind field environment of more preferable simulation actual job；By the way that honeycomb and damping screen are respectively set into two
Group, and honeycomb and damping screen is arranged in a crossed manner, the low turbulence and stability of the air-flow of current stabilization chamber output can be further ensured that；
By setting fastener, and make to connect by fastener between air-inlet cavity, contraction chamber, current stabilization chamber, diffusion chamber and air-out chamber, just
Assembly and disassembly between cavity；By the way that contraction chamber and diffusion chamber are sized to unanimously, to reduce one of production process,
It is easy to the making of wind-tunnel.
Brief description of the drawings
Fig. 1 is a kind of structural representation of small agricultural single flow low-speed wind tunnel of the present embodiment, and wherein arrow is wind
Flow direction.
Fig. 2 is the connection diagram of current stabilization intracavitary honeycomb and damping screen in Fig. 1.
Embodiment
The utility model is further described with reference to embodiment.Wherein, being given for example only property of accompanying drawing
Illustrate, expression is only schematic diagram, rather than pictorial diagram, it is impossible to is interpreted as the limitation to this patent；In order to which this reality is better described
With new embodiment, some parts of accompanying drawing have omission, zoomed in or out, and do not represent the size of actual product；To ability
For field technique personnel, some known features and its explanation may be omitted and will be understood by accompanying drawing.
Same or analogous label corresponds to same or analogous part in the accompanying drawing of the utility model embodiment；In this practicality
In new description, it is to be understood that if thering is the orientation of the instructions such as term " on ", " under ", "left", "right" or the position relationship to be
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore retouched in accompanying drawing
State term the being given for example only property explanation of position relationship, it is impossible to the limitation to this patent is interpreted as, for the common skill of this area
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
Embodiment
A kind of schematic diagram of small agricultural single flow low-speed wind tunnel of the present embodiment as shown in Figure 1 to Figure 2, including successively
Air-inlet cavity 1, contraction chamber 2, current stabilization chamber 3, diffusion chamber 4 and the air-out chamber 5 being detachably connected；Motor, spiral shell are provided with the air-inlet cavity 1
Rotation oar and control unit, motor are electrically connected with control unit, and the output shaft of motor is connected with propeller；Hung down in the current stabilization chamber 3
Honeycomb 7 and damping screen 8 directly are provided with wind direction, and is located at the front of damping screen 8 according to wind direction honeycomb 7；Institute
State the air velocity transducer for being provided with air-out chamber 5 and being electrically connected with control unit；The wind that control unit detects according to air velocity transducer
The rotating speed of fast controlled motor.
In the present embodiment, four sides of honeycomb 7 are connected with four inwalls of current stabilization chamber 3 respectively, four sides of damping screen 8
It is connected respectively with four inwalls of current stabilization chamber 3；Control unit is control chip STM32, and motor is the sharp source Q5L motors of four perseverances,
Propeller is 18 cun of propellers；The gradient of contraction chamber is 30 °, mainly for generation of uniform and stable air-flow, is reduced into windage loss
Lose.
During using the environment of wind tunnel simulation droplet drift experiment and surroundings wind field simulated test, control unit controlled motor
Propeller air-supply is driven, it is distinguished and admirable to enter from air-inlet cavity 1 in contraction chamber 2, it can produce more stable air-flow simultaneously after contraction chamber 2
Into current stabilization chamber 3, then pass sequentially through the honeycomb 7 inside current stabilization chamber 3 and damping screen 8 carries out the steady of rectification output low turbulence
It is fixed distinguished and admirable, then uniform air-flow is produced by diffusion chamber 4, finally enter in air-out chamber 5, air velocity transducer detects wind speed simultaneously in real time
Pass to control unit, control unit is according to the rotating speed of the blast velocity control motor detected, to ensure that wind speed is stable.This practicality is new
A kind of small agricultural single flow low-speed wind tunnel of type, simple in construction, small volume, manufacturing cost is low, and dismounting assembling is flexible, is adapted to
Use indoors, droplet drift experiment and the environmental requirement of surroundings wind field simulated test can be met.
Wherein, the air inlet of the air-inlet cavity 1 is provided with screen pack 6.The air inlet of energy filtering inlet air chamber 1 is so set
Debris, prevent that debris from hindering the smooth rotation of propeller, and then can guarantee that the wind field environment of more preferable simulation actual job.This reality
Apply in example, the screen pack 6 is wire netting.So set and can ensure that the intensity of screen pack 6, prevent screen pack 6 deform easily into
And influence filter effect.
In addition, honeycomb 7 and damping screen 8 are respectively two groups, and honeycomb 7 and damping screen 8 are arranged in a crossed manner.Honeycomb 7 wraps
The first honeycomb and the second honeycomb are included, damping screen 8 includes the first damping screen and the second damping screen, the first honeycomb, the first resistance
Buddhist nun's net, the second honeycomb and the second damping screen are set gradually.Honeycomb 7 can make the air outlet of current stabilization chamber 3 go out to flow orientation consistency more
It is good, distinguished and admirable turbulivity is reduced, damping screen 8 not only can be more uniformly distributed the distinguished and admirable speed on section, and can be incident wind
Normal direction refraction is flowed to, and then further reduces distinguished and admirable turbulence intensity.Honeycomb 7 and damping screen 8 are respectively set to two
Group is simultaneously arranged in a crossed manner, can be further ensured that the low turbulence and stability of the air-flow that current stabilization chamber 3 exports.
Honeycomb unit length drag losses increases with the reduction of honeycomb length and port size；In the present embodiment,
The length of honeycomb chooses 0.075m, and port size takes 0.02m.
Wherein, the percent opening of damping screen is 0.33.Percent opening β=w2/ (w+d) 2, wherein w are mesh width, and d grows for mesh
Degree, general percent opening are less than 0.5；Percent opening is lower, and rectification effect is more notable, so sets and can guarantee that rectification effect.
In addition, air-inlet cavity 1, contraction chamber 2, current stabilization chamber 3, the wall portion of diffusion chamber 4 and air-out chamber 5 are galvanized iron sheet structure.
The intensity of the small-sized DC formula low-speed wind tunnel can be further ensured that by so setting, and be easy to being smoothed out for experiment.
Wherein, it is equipped with angle bar support frame in air-inlet cavity 1, contraction chamber 2, current stabilization chamber 3, diffusion chamber 4 and air-out chamber 5.So
Setting can preferably support air-inlet cavity 1, contraction chamber 2, current stabilization chamber 3, diffusion chamber 4 and air-out chamber 5, be easy to being smoothed out for experiment.
In addition, also including fastener, pass through between air-inlet cavity 1, contraction chamber 2, current stabilization chamber 3, diffusion chamber 4 and air-out chamber 5
Fastener connects.The assembly and disassembly between cavity are easy in the setting of fastener.In the present embodiment, fastener is screw.
Wherein, contraction chamber 2 is consistent with the size of diffusion chamber 4.So setting reduces one of production process, is easy to wind-tunnel
Make.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.All made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., should be included in
Within the protection domain of the utility model claims.
Claims (10)
1. a kind of small agricultural single flow low-speed wind tunnel, it is characterised in that including the air-inlet cavity being detachably connected successively
（1）, contraction chamber（2）, current stabilization chamber（3）, diffusion chamber（4）And air-out chamber（5）；The air-inlet cavity（1）It is interior be provided with motor, propeller and
Control unit, motor are electrically connected with control unit, and the output shaft of motor is connected with propeller；The current stabilization chamber（3）It is interior perpendicular to
Wind direction is provided with honeycomb（7）And damping screen（8）, and according to wind direction honeycomb（7）Positioned at damping screen（8）Before
Side；The air-out chamber（5）It is interior provided with the air velocity transducer electrically connected with control unit；Control unit detects according to air velocity transducer
The rotating speed of the blast velocity control motor arrived.
A kind of 2. small agricultural single flow low-speed wind tunnel according to claim 1, it is characterised in that the air-inlet cavity
（1）Air inlet be provided with screen pack（6）.
A kind of 3. small agricultural single flow low-speed wind tunnel according to claim 2, it is characterised in that the screen pack
（6）For wire netting.
A kind of 4. small agricultural single flow low-speed wind tunnel according to claim 1, it is characterised in that honeycomb（7）
And damping screen（8）Respectively two groups, and honeycomb（7）And damping screen（8）It is arranged in a crossed manner.
5. a kind of small agricultural single flow low-speed wind tunnel according to claim 1, it is characterised in that damping screen is opened
Porosity is 0.33.
A kind of 6. small agricultural single flow low-speed wind tunnel according to claim 1, it is characterised in that air-inlet cavity（1）、
Contraction chamber（2）, current stabilization chamber（3）, diffusion chamber（4）And air-out chamber（5）Wall portion be galvanized iron sheet structure.
A kind of 7. small agricultural single flow low-speed wind tunnel according to claim 1, it is characterised in that air-inlet cavity（1）、
Contraction chamber（2）, current stabilization chamber（3）, diffusion chamber（4）And air-out chamber（5）Inside it is equipped with angle bar support frame.
8. a kind of small agricultural single flow low-speed wind tunnel according to claim 1, it is characterised in that also include fastening
Part, air-inlet cavity（1）, contraction chamber（2）, current stabilization chamber（3）, diffusion chamber（4）And air-out chamber（5）Between connected by fastener.
A kind of 9. small agricultural single flow low-speed wind tunnel according to claim 8, it is characterised in that the fastener
For screw.
A kind of 10. small agricultural single flow low-speed wind tunnel according to any one of claim 1 to 9, it is characterised in that
Contraction chamber（2）With diffusion chamber（4）Size it is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720501822.7U CN206656846U (en) | 2017-05-08 | 2017-05-08 | A kind of small agricultural single flow low-speed wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720501822.7U CN206656846U (en) | 2017-05-08 | 2017-05-08 | A kind of small agricultural single flow low-speed wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206656846U true CN206656846U (en) | 2017-11-21 |
Family
ID=60320350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720501822.7U Expired - Fee Related CN206656846U (en) | 2017-05-08 | 2017-05-08 | A kind of small agricultural single flow low-speed wind tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206656846U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107985628A (en) * | 2017-12-13 | 2018-05-04 | 南京林业大学 | The simulation of wind device that wind resistance detects in a kind of agricultural unmanned plane room |
| CN109307582A (en) * | 2018-11-30 | 2019-02-05 | 重庆大学 | A kind of the wind field detection device and detection method of increasing material manufacturing equipment |
| CN111307395A (en) * | 2020-03-09 | 2020-06-19 | 西南交通大学 | Large-caliber multi-channel straight-flow wind tunnel |
| CN113903243A (en) * | 2021-11-18 | 2022-01-07 | 上汽通用汽车有限公司 | Pneumatic resistance piece and scaling automobile model |
| CN114199497A (en) * | 2021-10-29 | 2022-03-18 | 东风商用车有限公司 | Wind field environment simulation wind tunnel structure for engine bench test |
-
2017
- 2017-05-08 CN CN201720501822.7U patent/CN206656846U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107985628A (en) * | 2017-12-13 | 2018-05-04 | 南京林业大学 | The simulation of wind device that wind resistance detects in a kind of agricultural unmanned plane room |
| CN109307582A (en) * | 2018-11-30 | 2019-02-05 | 重庆大学 | A kind of the wind field detection device and detection method of increasing material manufacturing equipment |
| CN109307582B (en) * | 2018-11-30 | 2020-11-10 | 重庆大学 | Wind field detection device and detection method of additive manufacturing equipment |
| CN111307395A (en) * | 2020-03-09 | 2020-06-19 | 西南交通大学 | Large-caliber multi-channel straight-flow wind tunnel |
| CN114199497A (en) * | 2021-10-29 | 2022-03-18 | 东风商用车有限公司 | Wind field environment simulation wind tunnel structure for engine bench test |
| CN113903243A (en) * | 2021-11-18 | 2022-01-07 | 上汽通用汽车有限公司 | Pneumatic resistance piece and scaling automobile model |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206656846U (en) | A kind of small agricultural single flow low-speed wind tunnel | |
| CN107436220A (en) | A kind of reverse-flow type frequency control multi-fan array wind-tunnel and its test method | |
| CN207114131U (en) | A kind of reverse-flow type multi-fan array wind-tunnel | |
| CN103807102B (en) | The narrow pipe wind-collecting wind generating system of through type | |
| CN208283033U (en) | A kind of experimental study device based on downburst wind-tunnel | |
| CN104806459B (en) | Tower barrel-type wind power generation device | |
| CN104176241A (en) | High-efficiency pneumatic layout structure of synergistic jet for high-altitude propeller and control method | |
| CN207100277U (en) | A kind of agricultural unmanned plane | |
| CN206686781U (en) | A kind of device that humidity is supplemented for rainforest cylinder humidity inductive and intelligence | |
| CN111661336B (en) | Agricultural unmanned aerial vehicle sprinkler | |
| CN108423173A (en) | One kind plunderring dynamic formula flapping wing aircraft device | |
| CN109552630A (en) | A kind of agricultural spray unmanned plane for realizing drainage using negative pressure booster | |
| CN207471750U (en) | A kind of industrial big fan of novel belt spraying device | |
| CN206037303U (en) | Have air cycle fan of humidification function concurrently | |
| CN206055783U (en) | A kind of indoor temperature regulating device | |
| CN106653618B (en) | A kind of integrated antenna package dispensing room | |
| CN109869886B (en) | Directional air supply arrangement of energy-conserving air conditioner based on rotatory efflux | |
| CN104401492B (en) | Agricultural depopulated helicopter | |
| CN207325118U (en) | A kind of air-assisted type spraying machine of automatic rotary | |
| CN206291377U (en) | A kind of building fan with spraying function | |
| CN104014453A (en) | Hydraulic type spraying machine | |
| CN209617519U (en) | A kind of culvert type is without leaf aircraft | |
| CN103089545A (en) | Closed wind power generating equipment | |
| CN208439434U (en) | A kind of plant protection monitoring unmanned plane for spraying insecticide | |
| CN206221379U (en) | Roof ventilation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |