CN108716980A - A kind of wind tunnel test machine - Google Patents
A kind of wind tunnel test machine Download PDFInfo
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- CN108716980A CN108716980A CN201810776492.1A CN201810776492A CN108716980A CN 108716980 A CN108716980 A CN 108716980A CN 201810776492 A CN201810776492 A CN 201810776492A CN 108716980 A CN108716980 A CN 108716980A
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- tunnel
- blower
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 230000033228 biological regulation Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims 1
- 239000000428 dust Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 8
- 230000001629 suppression Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a kind of wind tunnel test machine, it is compact-sized, can it is portable, wind speed adjustable range is wide.Including：Shell, axial flow blower, sample holder and wind speed adjustable plate；Shell is the hollow structure that both ends are open, including blower housing, pipeline reducing diameter shell and the wind-tunnel shell sequentially coaxially docked；The axial flow blower and for provided for axial flow blower power blower motor be mounted on blower housing inside；Wind speed adjustable plate is mounted on the opening at blower housing place end, and the adjustable air intake passage of incoming air area is provided on wind speed adjustable plate, and intake is adjusted by adjusting the incoming air area of air intake passage；Pipeline reducing diameter shell includes conical section and the cylindrical portion in conical section big end is arranged, and the cylindrical portion is connected with the blower housing, and conical section small end is connected with the wind-tunnel shell；Wind-tunnel shell be equal diameter cylindrical shell, inside be fixed with horizontal sample holder, the pallet for being placed with detected sample is placed on sample holder.
Description
Technical field
Invention is related to a kind of testing machine, and in particular to a kind of wind tunnel test machine.
Background technology
Particulate matter is one of the primary pollutant of China urban air pollution, and airborne dust is then urban atmosphere particulate matter
Main source, airborne dust, which refers to earth's surface loose particulate material, to be entered under natural force or manpower effect and forms one in surrounding air
Determine the air particle of particle size range.According to《It prevents city raised dust and pollutes technical specification》(HJ/T393-2007) regulation, city
City's airborne dust can be broadly divided into soil airborne dust, four class of construction fugitive dust, dust on the roads and stockyard airborne dust.
Wind is the power that airborne dust generates, and when extraneous wind-force reaches a certain level, particle will leave earth's surface or pile heap surface
Airborne dust is formed, wind speed and turbulence intensity account for leading role in emission quantity.Anti-wind net, watering, spray dust suppressant and fabric covering are all
It is to administer the effective means of airborne dust, but effect is different.Carry out continuing dust suppression efficiency test by wind tunnel test, can it is easy,
The quickly efficiency and treatment cost of evaluation dust suppression measure.
But traditional wind tunnel test machine size is big, and wind speed adjusting is carried out using alternating frequency conversion technique, and wind speed adjustable range is narrow,
Power and of high cost, and since using exchanging, use is more inconvenient.In addition, in wind tunnel experiment, need with holder measured object
Support is in the gas flow.The presence of holder will produce the interference to being tested Flowing Field, referred to as support interferences.Although experiment can be passed through
Method corrects the influence of holder, but is difficult to correct totally.
Invention content
In view of this, the present invention provides a kind of wind tunnel test machine, by carrying out air quantity adjusting to the design of its structure and adding
Speed, wind speed adjustable range is wide, power and at low cost, and size is small, easy to use.
The wind tunnel test machine includes：Shell, axial flow blower, sample holder and wind speed adjustable plate；
The shell is the hollow structure that both ends are open, including blower housing, the pipeline reducing diameter shell sequentially coaxially docked
Body and wind-tunnel shell；The axial flow blower and for provided for axial flow blower power blower motor be mounted on blower housing in
Portion；
The wind speed adjustable plate is mounted on the opening at blower housing place end, is provided on the wind speed adjustable plate
The adjustable air intake passage of incoming air area adjusts intake by adjusting the incoming air area of air intake passage；
The pipeline reducing diameter shell includes conical section and is arranged the cylindrical portion in conical section big end, the cylindrical portion with it is described
Blower housing is connected, and conical section small end is connected with the wind-tunnel shell；
The wind-tunnel shell be equal diameter cylindrical shell, inside be fixed with horizontal sample holder, be placed with to be detected
The pallet of sample is placed on sample holder.
The wind tunnel test machine further includes the deflector being arranged between sample holder and pipeline reducing diameter shell, and being used for will
Wind into wind-tunnel enclosure is guided in the cavity above the detected sample；
Specially：The end set of the sample holder towards pipeline reducing diameter shell one end has the vertical branch upwardly extended
Frame, the deflector are skewback, and one end and the periphery of wind-tunnel outer casing end are affixed, and the other end tilts rear support and exists upwards
The top of the vertical rack.
Advantageous effect：
(1) the wind tunnel test machine it is compact-sized, can be portable, utilize that wind speed adjusts Moving plate, pipeline reducing diameter and deflector carry out
Air quantity adjusts and accelerates, in terms of comparing the wind-tunnel for carrying out wind speed regulative mode using alternating frequency conversion technique, power and product cost
It substantially reduces.
(2) it utilizes deflector to close wind-tunnel inner support structure, eliminates support interferences, while utilizing tilting deflector in wind-tunnel
Big turbulence effect is generated, the abundant airborne dust purpose of pedotheque can be reached.
(3) 220V alternating currents are used, take capacitance easy, it is easy to use.
Description of the drawings
Fig. 1 is the structural schematic diagram of the wind tunnel test machine；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is the B-B sectional views of Fig. 1；
Fig. 4 is the C-C sectional views of Fig. 1；
Fig. 5 is the D-D sectional views of Fig. 1；
Fig. 6 is that the incoming air area of air inlet hole in embodiment 2 adjusts schematic diagram.
Wherein：1- wind speed regulation handles；2- wind speed adjusts Moving plate；3- wind speed adjusts quiet disk；4- fans entrance end housing bodies；
5- wind turbines stage casing outer housing；6- axial flow blowers；7- blower motors；8- fan outlet end housing bodies；9- is buckled；10- pipeline reducing diameters
Shell；11- wind-tunnel shells；12- wind speed detectors；13- sample holders；14- vertical racks；15- deflectors；16- equipment supporters；
17- terminal boxes；18- securing members；19- spacing collars；20- multi-diameter shafts；21- locking nuts；22- pedotheques
Specific implementation mode
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Embodiment 1：
The present embodiment provides a kind of for carrying out the wind tunnel test machine of dust suppression efficiency test, and the testing machine structure is compact, can
It is portable, wind speed adjustable range is wide.
As shown in Figure 1, the wind tunnel test machine includes：Shell, axial flow blower 6, sample holder 13, wind speed adjustable plate and water conservancy diversion
Plate 15.
Its middle casing is the hollow structure that both ends are open, including fans entrance end housing body 4, the wind sequentially coaxially docked
Machine stage casing outer housing 5, fan outlet end housing body 8, pipeline reducing diameter shell 10 and wind-tunnel shell 11.Wherein fans entrance end housing
Body 4 and fan outlet end housing body 8 include conical section and the cylindrical portion positioned at conical section small end, wind turbine stage casing outer housing 5
One end is connected by securing member 18 with the conical section big end of fans entrance end housing body 4, and the other end passes through securing member
18 are connected with the conical section big end of fan outlet end housing body 8.It is provided with axial flow blower 6 in wind turbine stage casing outer housing 5 and is used for
The blower motor 7 that power is provided for axial flow blower 6, equipment supporter 16 is provided with outside wind turbine stage casing outer housing 5 and with it inside
Blower motor 7 be electrically connected terminal box 17.
The open end of 4 cylindrical portion of fans entrance end housing body is provided with wind speed adjustable plate, wind speed adjustable plate as air intake
On be provided with the adjustable air inlet hole of incoming air area, by adjusting air inlet hole area carry out wind speed adjusting.
Pipeline reducing diameter shell 10 is including conical section and the cylindrical portion in conical section big end is arranged, and the two of pipeline reducing diameter shell 10
End is connected with fan outlet end housing body 8 and wind-tunnel shell 11 respectively, specially：The both ends of pipeline reducing diameter shell 10 are respectively set
There is linkage section, the linkage section of wherein cylindrical portion end is sleeved on outside fan outlet end housing body 8, then by circumferentially distributed
The linkage section of 10 cylindrical portion end of pipeline reducing diameter shell is fixed together by multiple buckles 9 with fan outlet end housing body 8, taper
The linkage section of the ends Duan little Duan is sleeved on outside wind-tunnel shell 11, easy to disassemble and assembling.
Wind-tunnel shell 11 is equal diameter cylindrical shell, and inner space is fixed with water as wind-tunnel inside wind-tunnel shell 11
Flat sample holder 13, sample holder 13 are located at the lower half portion of wind-tunnel shell 11, and detected sample is pedotheque 22, detection
When the pallet for being placed with pedotheque 22 to be detected is placed on sample holder 13.
To eliminate support interferences, while big turbulence effect is generated, in sample holder 13 towards pipeline reducing diameter shell 10 1
End is provided with deflector 15, the top for wind to be guided to pedotheque 22.Specially：Sample holder 13 is towards pipeline reducing diameter
The end set of 10 one end of shell has the vertical rack 14 vertical with sample holder 13, the wind-tunnel shell of vertical rack 14 and the side
Deflector 15 is provided between 11 end face, deflector 15 is skewback, and one end and the periphery of 11 end of wind-tunnel shell are solid
It connects, the other end is located at the top of vertical rack 14, the top for wind to be guided to pedotheque 22 after tilting upwards.Outside wind-tunnel
Inside shell 11,22 top of pedotheque, the corresponding both ends for placing 22 region of pedotheque are respectively arranged with wind speed detector 12.
Wind-tunnel shell 11 can be made of clear material, and can be used in the other aspects that urban environment is administered, and can be used for commenting
The efficiency of nitrogen oxides in photocatalyst for degrading vehicle exhaust under the conditions of valence natural lighting in bituminous paving.
The application method of the airborne dust wind tunnel test machine is：
(1) first by pedotheque 22 be put into adapt to this testing machine test space size pallet in, then use anti-wind net,
A kind of means in the dust suppressions measures such as watering, spray dust suppressant or fabric covering carry out dust suppression processing to sample；Pedotheque is claimed
It weighs and records；Air inlet hole area on wind speed adjustable plate is adjusted to maximum.
(2) pallet for being placed with pedotheque is placed in wind-tunnel on horizontal stand；Power supply is connected, fan motor is sent
Electricity；Incoming air area by adjusting wind speed adjustable plate upper air inlet sky adjusts wind speed, observes the measured value of wind speed detector 12, measures
Value stops the adjusting to wind speed adjustable plate when reaching experimental condition.Then 6 continuous service of axial flow blower is shut down after five minutes.Most
Pedotheque is weighed and recorded afterwards, obtains the variation difference of pedotheque weight before and after the test.
The principle of the airborne dust wind tunnel test machine is：Using 220V alternating currents, air-flow is generated come natural wind simulating by axial flow blower 6
Power.Air inlet hole area by adjusting wind speed adjustable plate adjusts intake to realize the adjusting to wind speed in wind-tunnel.Utilize pipeline
Reducing shell 10 and deflector 15 realize that wind speed accelerates so that the wind speed in wind-tunnel shell 11 is noticeably greater than the wind at fan outlet end
Speed.Generating big turbulence effect using deflector 15 achievees the purpose that the abundant airborne dust of pedotheque simultaneously.The detection device wind speed
Adjustable range is 3~17m/s, corresponds to about 2~8 grades of natural wind.Before being tested under different wind conditions by weighing sample
The variation of weight obtains the dust suppression efficiency of dust suppression measure under corresponding wind speed afterwards.
The present apparatus at the trial, if pedotheque 22 does not take any dust suppression measure, the soil within 5 minute testing time
Sample can all be blown away, it can be seen that turbulence effect is notable, and airborne dust is with obvious effects.
Embodiment 2：
The present embodiment apoplexy speed adjustable plate includes：Wind speed adjusts Moving plate 2 and wind speed adjusts quiet disk 3, and wherein wind speed adjusts dynamic
It is the circumferentially distributed disc-shaped structure for having multiple circular holes as air inlet hole that disk 2 and wind speed, which adjust quiet disk 3, and wherein wind speed is adjusted
Quiet disk 3 and fans entrance end housing body 4 are affixed, and wind speed adjusts Moving plate 2 and adjusts quiet 3 coaxial phase of disk by multi-diameter shaft 20 and wind speed
Even, and on the multi-diameter shaft 20 stretched out outside wind speed adjusting Moving plate 2 it is set with spacing collar 19, passes through multi-diameter shaft 20 and spacing collar
19 realize the axial limiting that Moving plate 2 is adjusted to wind speed.Ventilation hole number is identical on wind speed adjusting Moving plate 2 and the quiet disk 3 of wind speed adjusting,
It is completely superposed when wind speed adjusting Moving plate 2 and wind speed adjust quiet 3 enterprising air holes of disk, the enterprising air holes incoming air area of wind speed adjustable plate is most
Greatly, when velocity modulation section Moving plate 2 and wind speed, which adjust the air inlet hole on quiet disk 3, to be staggered completely, wind speed adjustable plate closes fans entrance end
The open end of 4 cylindrical portion of outer housing, as shown in Figure 6.Wind speed, which is adjusted, to be provided on 2 end face of Moving plate for driving it around central shaft
The wind speed regulation handle 1 of rotation adjusts the incoming air area that Moving plate 2 adjusts air inlet hole by rotating wind speed, that is, adjusts intake, with
Realize the adjusting to wind speed in wind-tunnel.Wind speed adjusts the locking screw by being sleeved on outside multi-diameter shaft 20 after Moving plate 2 rotate in place
Mother 21 carries out locking positioning to it.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (8)
1. a kind of wind tunnel test machine, which is characterized in that including：Shell, axial flow blower (6), sample holder (13) and wind speed are adjusted
Plate；
The shell is the hollow structure that both ends are open, including blower housing, the pipeline reducing diameter shell sequentially coaxially docked
(10) and wind-tunnel shell (11)；The axial flow blower (6) and blower motor (7) peace for being used to provide power for axial flow blower (6)
Inside blower housing；
The wind speed adjustable plate is mounted on the opening at blower housing place end, and air inlet is provided on the wind speed adjustable plate
The adjustable air intake passage of area adjusts intake by adjusting the incoming air area of air intake passage；
The pipeline reducing diameter shell (10) includes conical section and is arranged the cylindrical portion in conical section big end, the cylindrical portion with it is described
Blower housing is connected, and conical section small end is connected with the wind-tunnel shell (11)；
The wind-tunnel shell (11) be equal diameter cylindrical shell, inside be fixed with horizontal sample holder (13), placement needs
The pallet of detection sample is placed on sample holder (13).
2. wind tunnel test machine as described in claim 1, which is characterized in that further include that setting becomes in sample holder (13) and pipeline
Deflector (15) between diameter shell (10) is guided to the detected sample for will enter the internal wind of wind-tunnel shell (11)
In the cavity of top；
Specially：The end set of the sample holder (13) towards pipeline reducing diameter shell (10) one end have upwardly extend it is vertical
Holder (14), the deflector (15) be skewback, one end and the periphery of wind-tunnel shell (11) end are affixed, the other end to
Top of the upper inclination rear support in the vertical rack (14).
3. wind tunnel test machine as claimed in claim 1 or 2, which is characterized in that the wind speed adjustable plate includes：Wind speed adjusts dynamic
Disk (2) and wind speed adjust quiet disk (3), and the wind speed adjusts quiet disk (3) and is fixed in the blower housing open end, is arranged on end face
There is the disc-shaped structure of air intake passage；Wind speed adjusts Moving plate (2) and adjusts the coaxial phase of quiet disk (3) by multi-diameter shaft (20) and wind speed
Even；The area that Moving plate (2) changes quiet disk (3) the upper air inlet channel of wind speed adjusting that it is blocked is adjusted by rotating the wind speed, into
And change the incoming air area of air intake passage；After the incoming air area of air intake passage is adjusted to setting value, by locking member to described
Wind speed adjusts Moving plate (2) and carries out locking positioning.
4. wind tunnel test machine as claimed in claim 3, which is characterized in that the wind speed adjusts Moving plate (2) and wind speed adjusting is quiet
Disk (3) is the circumferentially arranged disc-shaped structure there are two the above air inlet hole, and wind speed adjusts the air inlet hole conduct on quiet disk (3)
Air intake passage；The wind speed adjusting Moving plate (2) is identical with the wind speed quiet enterprising air holes number of disk (3) of adjusting, when wind speed adjusts Moving plate
(2) when turning to air inlet hole and wind speed thereon and adjusting quiet disk (3) upper air inlet hole site and correspond, the wind speed adjustable plate is enterprising
Wind aisle spare is maximum, and when wind speed is adjusted, Moving plate (2) turns to air inlet hole thereon and the air inlet hole on the quiet disk (3) of wind speed adjusting is complete
Completely wrong when opening, the wind speed adjustable plate closes the blower housing open end.
5. wind tunnel test machine as described in claim 3 or 4, which is characterized in that the wind speed is adjusted to be arranged on Moving plate (2) end face
It is useful for that wind speed is driven to adjust the wind speed regulation handle (1) that Moving plate (2) is rotated around central shaft.
6. wind tunnel test machine as claimed in claim 1 or 2, which is characterized in that the wind-tunnel shell (11) is internal, test sample to be checked
The axial both ends of product region are separately provided for measuring the wind speed detector (12) of the internal wind speed of wind-tunnel shell (11).
7. wind tunnel test machine as claimed in claim 1 or 2, which is characterized in that the wind-tunnel shell (11) can be by transparent material
It is made.
8. wind tunnel test machine as claimed in claim 1 or 2, which is characterized in that the blower housing includes entrance end housing
(4), wind turbine middle housing (5) and fan outlet end housing (8), the axial flow blower (6) and blower motor (7) are mounted on wind turbine
Middle housing (5) is internal；The fans entrance end housing body (4) and fan outlet end housing body (8) include conical section and position
In the cylindrical portion of conical section small end, one end of wind turbine stage casing outer housing (5) by securing member and fans entrance end outside
The conical section big end of shell (4) is connected, the conical section big end that the other end passes through securing member and fan outlet end housing body (8)
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776492.1A CN108716980B (en) | 2018-07-10 | 2018-07-10 | Wind tunnel testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776492.1A CN108716980B (en) | 2018-07-10 | 2018-07-10 | Wind tunnel testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108716980A true CN108716980A (en) | 2018-10-30 |
| CN108716980B CN108716980B (en) | 2024-06-25 |
Family
ID=63913552
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810776492.1A Active CN108716980B (en) | 2018-07-10 | 2018-07-10 | Wind tunnel testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108716980B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696291A (en) * | 2019-02-01 | 2019-04-30 | 国电环境保护研究院有限公司 | A kind of direct-firing gust wind tunnel of band shunting disk |
| CN110320002A (en) * | 2019-07-31 | 2019-10-11 | 中国航发沈阳发动机研究所 | A kind of device controlling channel-style component incoming flow parameter in icing tunnel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696291A (en) * | 2019-02-01 | 2019-04-30 | 国电环境保护研究院有限公司 | A kind of direct-firing gust wind tunnel of band shunting disk |
| CN109696291B (en) * | 2019-02-01 | 2024-02-06 | 国电环境保护研究院有限公司 | Direct blowing gust wind tunnel with flow dividing disc |
| CN110320002A (en) * | 2019-07-31 | 2019-10-11 | 中国航发沈阳发动机研究所 | A kind of device controlling channel-style component incoming flow parameter in icing tunnel |
| CN110320002B (en) * | 2019-07-31 | 2021-05-25 | 中国航发沈阳发动机研究所 | Device for controlling inflow parameters of channel-type member in icing wind tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108716980B (en) | 2024-06-25 |
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