CN209372357U - A kind of suction gust wind tunnel with porous rotating device - Google Patents
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Abstract
The utility model discloses a kind of suction gust wind tunnels with porous rotating device, it is characterized in that including sequentially connected stable section, contraction section, test section, diffuser, power section and outlet diffuser: controlling air-flow flux by porous rotating device, throughput to make power section enter test section changes to form fitful wind, by the rotation speed of control rotation porous disc, reach the speed for changing the variation of test section fitful wind.Using the gust wind tunnel of the utility model, can generate frequency has height to have low fitful wind.
Description
Technical field
The utility model relates to one of Wind Engineering technical field battle array wind wind tunnel experiment device more particularly to a kind of bands
There is the suction gust wind tunnel of porous rotating device.
Background technique
Wind-tunnel is briefly exactly an elongated pipeline Jing Guo special designing, is existed by dynamical system (motor and fan)
One flowing that air when object moves in air taking human as the air-flow freely controlled, can be simulated with it of its internal generation shows
As the case where, object receiving force, air around certain fixed objects around flow phenomenon and the aerial migration of flue gas, diffusion phenomena
Deng ".
Air pollution, also known as atmosphere pollution, according to the definition of International Organization for standardization (ISO), air pollution is usually
Refer to since mankind's activity or natural process cause Cucumber to enter in atmosphere, enough concentration is showed, when reaching enough
Between, and the phenomenon that therefore compromise the comfortable of human body, health and wellbeing or environment.For the problem of improving People's livelihood, Lee Premier of the State Council
Gram strong 14 days June in 2013 Executive Meeting of the State Council is held, deploys ten measures of prevention and control of air pollution.Meeting emphasis mentions
Environmental wind tunnel is arrived, why environmental wind tunnel experimental method has been to be concerned by more and more people, and is since it is with some uniquenesses
Function, be able to solve the problem of other methods cann't be solved.
In Pollution Study, the factor of discovery influence air pollution is more, other than pollution sources factor, also by landform
Geomorphic factors influence.The contaminated range of plains region and the contaminated range in mountain area are significantly different；Climatic factor influence such as wind direction,
Wind speed, turbulent extent, humidity etc..In addition, since there are complicated inherences to lead connection for these factors, also become time factor
It is more important, as the atmosphere pollution character of winter and summer have apparent difference.For being engaged in the work of atmosphere pollution research
For person, the social environmental factor of research area is also a problem, such as traffic, what optimal sampled point staff did not went
Situation frequently encounters etc..All of these factors taken together usually influences experimental precision and experiment progress, brings biggish material resources and financial resources
Loss, these are all obvious to all.Lift a simply example, season meteorological detection in 15 days by a definite date and 8 monitoring sampled points
Background survey, field test expense is up to 30,000 yuan or so.If it is more detailed research experiment is carried out, such as scene
Tracer research and atmospheric flow field research are discharged, expense will be up to hundreds of thousands of members even members up to a million.
Using environmental wind tunnel laboratory facilities, the above problem will obtain different degrees of solution.As previously described, environmental wind tunnel
Simulated conditions can have repeated ability for the environmental condition studied taking human as control and variation.That is it influences existing
Factor such as time, weather, traffic etc. of experiment no longer thousand will disturb wind tunnel simulation experiment.And manpower, object consumed by testing
Power and financial resources have all obtained largely saving.
It sums up, environmental wind tunnel can be the work service of two aspects；One, in terms of Environmental protection management angle,
It such as can arrange at the planning design work service of industrial and mining enterprises for plant site selection, total figure: or major polluting sources are defended
The determination work service of biological and ecological methods to prevent plant disease, pests, and erosion protecting band；It replaces field measurement to work in the small scale of complicated landform (being less than 10km) range, is big
The evaluation and prediction work service of gas environmental quality；In addition, it can be mentioned for the determination work of the arrangement, sampled point of field measurement
Data for reference calculates work for numerical value and provides reference data.Second, in terms of the research angle of atmosphere pollution mechanism, it can be with
Carry out the influence research of landform, atural object, local flow field and DIFFUSION IN TURBULENCE rule to atmosphere pollution, carries out different pollutant emission items
The work services such as research of plume rise rule under the conditions of part and environmental background.
Meanwhile in the research in Wind Engineering field, environmental wind tunnel can also be permitted for research long-span bridge, skyscraper, tower etc.
The safe design research of other more unique textures provides technical support.
However, when occupying leading role for some extreme weather event (Gust front, hurricane etc.) unstable state air-flows,
Common boundaries layer wind-tunnel lacks the ability for simulating these event transient effects.Therefore, it is necessary to a kind of battle array wind effects of capable of generating
Environmental wind tunnel.
In order to make the air-flow of test section generate battle array effect, traditional method, such as the used mechanical rocking grate lattice of forefathers
Or airfoil bodies have a disadvantage, environmental wind tunnel is that addition wedge and roughness element come simulated atmosphere side in the well-proportioned wind-tunnel in flow field
The Wind outline of interlayer, if adding a grid again on this basis, the wind speed and turbulivity of experimental section will be difficult to control,
So that the wind speed size of experimental section is all unable to control.Using change Frequency Converter Control rotation speed of the fan generate battle array, need fan without
Method reaches the optimum condition of operating, and requires electrical power required for sudden change.Simultaneously because the diameter of the fan of power section
It is larger, usually have several meters long, it means that the rotary inertia of fan is very big, so the revolving speed adjustment of fan is slow, so that
Generating velocity variations required time scale (changing the 25% of test section speed in 1~5s) can not be achieved.And it is natural
The rate that wind speed in environment changes all be it is instantaneous, therefore, current wind-tunnel can not simulate natural wind completely.
This will mention the turbulent flow in atmosphere, about the turbulent flow in atmosphere, it is necessary first to know some relationships: general turbulent flow
Scale is bigger, then the frequency of turbulent flow is lower；The scale of turbulence that the bigger barrier of scale generates is bigger.Conventional environment wind-tunnel
The scale of the turbulent flow generated by wedge and roughness element, wedge and roughness element is generally in 0.1m or so, so the turbulent flow frequency generated
Rate is relatively high.And because there is the presence of the biggish barrier of the scales such as high buildings and large mansions, hillside, the woods in real atmosphere, it is rapid
The energy of low frequency part can not be ignored in stream, and scale is larger, the lower fluctuating wind of frequency it is therefore necessary to generating in wind-tunnel, this
Sample can be more identical with true atmosphere.
It is ambient wind velocity close to static or very low meteorological condition that the premise of high pollution is generated in actual environment, because
Only in this environment, the pollutant of discharge cannot be spread apart, and lead to the heavily contaminated in some areas.Therefore it needs in wind-tunnel
Wind speed is simulated when experiment close to zero and the stable meteorological condition of wind environment.Direct current blow formula it is unsuitable main reason is that
Its power section is located at test section upstream, and gap of the blower fan when slowly running between multiple-blade is bigger to generate fixed frequency
Battle array property effect, while wind can generate multidirectional sinuous flow when spreading downwards by power section and cause wind environment unstable.Reflux
Formula wind-tunnel can not be discharged into experimental ring after pollution sources release since the characteristic of its silent reflux causes when carrying out pollutant experiment
Overseas, so that the background concentration of test section is constantly superimposed increases, the measurement of experiment is hindered.
Utility model content
Based on above-mentioned the deficiencies in the prior art, the utility model proposes a kind of suction fitful wind wind with porous rotating device
Hole, can generate frequency has height to have low fitful wind.The main operational principle of the wind tunnel experiment of the utility model is: pacifying in active section
The model of landform and building of the research area reduced by a certain percentage etc. is put, and presses certain similarity criterion, is being worked
Section simulates the similar atmospheric flow field with scene, then tracer is discharged on Air Pollutant Emission point, by the system laid
Column sampling its concentration of point sampling post analysis.Atmospheric flow field situation is then by a kind of hot-wire anemometer measurement note for being exclusively used in flow invariance
Record is got off.Finally carry out data preparation analysis, mode derives and determine the rules of diffusion with dilution of research area's atmosphere pollution.?
It can be recorded with the method for the method of photograph and camera shooting and changes rail using the white cigarette generated in active section release liquid paraffin
Then mark carries out data analysis and arrangement and finds its changing rule.
To solve the above problems, the scheme now proposed is as follows:
A kind of suction gust wind tunnel with porous rotating device, overall length are 53 meters, comprising: sequentially connected stabilization
Section, contraction section, test section, diffuser, power section and outlet diffuser；Wherein: the power section is 9.1 meters a length of, diameter 5.1
Rice, side are connected to the outlet diffuser communicated with the outside world, and the other side is connected to diffuser, and test section is 16 meters a length of, width 2.5
Rice, 2 meters a height of, the test section and diffuser are provided with porous rotating device in connectivity part, and the porous rotating device includes
The diameter of hollow fixation porous disc, rolling bearing and hollow rotation porous disc, fixed porous disc and rotation porous disc is 2
Meter, rotation porous disc inner ring is fixedly connected with rolling bearing outer ring in porous rotating device, fixed porous disc inner ring and rotation axis
It holds inner ring to be fixedly connected, the outer ring of fixed porous disc is fixedly connected on wind-tunnel inner wall, and the setting of rotation porous disc outer ring edge is with teeth
Wheel, can cooperate with the crawler belt, rotate porous disc and rolling bearing is driven by being fixed on the motor of wind-tunnel inner wall.It is described
The test section other side is connected with contraction section, contraction section be exactly in wind-tunnel cross-sectional area greatly reduce, to increase flowing velocity so that
Air-flow more evenly one section.The air quality of contraction section big end is flowed through in unit time, must flow out (matter from the small end of contraction section
Measure conservation principle).Unique mode is exactly that, when circulation area reduces, air velocity increases.As a result, air is in test section
Flowing velocity of the speed of middle flowing than before contraction section in each section is bigger.The stable section communicated with the outside world is connected to shrink
Section, main function are the uniformities for reducing turbulent flow and increasing air-flow.The section is made of multiple damping screens and honeycomb, silk screen
Voidage, or opening area ratio is 64%.The function of honeycomb is air-flow " straight device ".Aluminum honeycomb is by hexagon pipe group
At the diameter of pipe is 12.7mm, long 20.3mm.This wind-tunnel is by porous rotating device according to rotation porous disc and fixed porous disc
Circular hole align the air outlet to be formed to control air-flow flux, the fitful wind of height frequency is formed in wind-tunnel.
Preferably, connectivity part is arranged between diffuser and test section in the porous rotating device, carrys out better control wind
Hole interior air-flow flux.
Preferably, rotation porous disc inner ring is fixedly connected with rolling bearing outer ring, fixed porous disc inner ring and rolling bearing
Inner ring is fixedly connected, and the outer ring of fixed porous disc is fixedly connected on wind-tunnel inner wall.It prevents porous rotating device from falling off, plays stabilization
Effect.
Preferably, the porous rotating device includes that hollow fixation porous disc, rolling bearing and hollow rotation are porous
Disk, to control air-flow flux.
Preferably, the operation of crawler belt on motor of the porous disc by being fixedly mounted on wind-tunnel inner wall is rotated to be rotated.
Preferably, rotation porous disc outer ring edge is provided with gear, can cooperate with the crawler belt.Facilitate rotation porous disc
Rotation.
Preferably, fixed porous disc outer ring is greater than the outer ring of rotation porous disc.
Preferably, the hole location size on the rotation porous disc and fixed porous disc, shape and the complete phase of distribution situation
Together.Uniform control air-flow flux.
Preferably, the rolling bearing is hollow bearing.When hole is closed completely or beats completely on porous rotating device
When opening, conventional wind-tunnel ventilation.
Preferably, the damping screen in the stable section is set as multilayer, and there are spaces between every layer of silk screen to reduce turbulent flow.
Preferably, the stable section, contraction section, test section, porous rotating device, diffuser, power section and outlet diffusion
Section is full steel structure, plays the anti-corrosion resistant effect of strike of resistance to compression.
The utility model has the following beneficial effects: compared with prior art
A kind of suction gust wind tunnel with porous rotating device of this utility model chooses the mode of direct current suction more
Be conducive to accurate simulating pollution object diffusion.Its reason is that the downstream that power section is placed on to test section becomes direct current suction and to try
The air-flow for testing section is negative pressure, passively downstream outlet diffuser discharge, can be effectively reduced fan rotation and produces to test section flow field
Raw unstable interference, pollutant will not generate overlaying influence to test segment data after outlet drain.It is added simultaneously more
After the rotating device of hole, in the case where power section rotation speed of fan is fixed, when hole location misplaces on rotation porous disc and fixed porous disc
When closure, the air-flow flux into diffuser is minimum value, test section wind speed highest, when on rotation porous disc and fixed porous disc
Hole bit-by-bit forms maximum air outlet, and the air-flow flux into diffuser is maximum value, and test section wind speed is minimum.According to above-mentioned two
Kind of operating mode, by rotating clockwise, or rotary motion porous disc counterclockwise, air-flow are inhaled into flux hair when diffuser
Change, so that test section wind speed quickly generates height, ceaselessly variation forms fitful wind similar with natural wind, while can also change
Become the rotation speed of rotation porous disc, there is height to have low fitful wind so that generating frequency in test section.When the revolving speed of rotation porous disc
High frequency fitful wind is generated when maximum, and low frequency fitful wind is generated when rotating the revolving speed minimum of porous disc.When hole location is completely coincident or hole
Position completely close and adjusts rotate porous disc motor it is out of service when, gust wind tunnel is converted to conventional wind speed suction wind-tunnel.
The main body of the utility model gust wind tunnel includes: sequentially connected stable section, contraction section, test section, diffuser, moves
Power section and outlet diffuser.The connectivity part of diffuser and test section is provided with porous rotating device, in the porous rotating device
It is sequentially connected as fixed porous disc, rolling bearing, rotation porous disc.The porous rotating device includes that hollow fixation is porous
Disk, rolling bearing and hollow rotation porous disc, rotation porous disc inner ring is fixed with rolling bearing outer ring in porous rotating device
Connection, fixed porous disc inner ring are fixedly connected with rolling bearing inner ring, and the outer ring of fixed porous disc is fixedly connected on wind-tunnel inner wall,
Rotation porous disc outer ring edge is provided with gear, can cooperate with the crawler belt, and rotation porous disc and rolling bearing pass through fixation
The operation of crawler belt is rotated on the motor of wind-tunnel inner wall.Porous rotating device is according to rotation porous disc and fixed porous disc
Hole align the air outlet to be formed to control air-flow flux, to form the fitful wind of height frequency in diffuser, simulation comes from
Right wind.
Detailed description of the invention
Fig. 1 is the two-dimensional structure schematic diagram of gust wind tunnel disclosed in the utility model embodiment；
Fig. 2 is the two-dimensional structure schematic diagram of power section part disclosed in the utility model embodiment；
Fig. 3 is the structure diagram of porous rotating device disclosed in the utility model embodiment；
Fig. 4 is wind speed variation comparison diagram.
Wherein: 106, power section；101, stable section；102, contraction section；103, test section；105, diffuser；104, porous
Rotating device；116, front end fan shroud；119, rear end fan shroud；118, spin-ended；117, fan；120, honeycomb；121, it hinders
Buddhist nun's net；113, fixed porous disc；114, porous disc is rotated；115, rolling bearing；107, diffuser is exported.
Specific embodiment
The utility model embodiment proposes a kind of suction gust wind tunnel with porous rotating device, by control wind-tunnel
Air-flow flux, generating frequency and having high has low fitful wind.
As shown in Figure 1, a kind of suction gust wind tunnel with porous rotating device of the utility model embodiment, comprising: according to
The stable section 101 of secondary connection, contraction section 102, test section 103, diffuser 105, power section 106 export diffuser 107.Power
The rear portion of section 106 uses flaring structure, specifically, above-mentioned each independent functional section can be formed and welding or being spirally connected
One whole wind-tunnel.Wherein: 106 side of power section is provided with and communicated with outlet diffuser 107, and diffuser 105 and test section 103 connect
Logical place is provided with porous rotating device 104.As shown in Fig. 2, being provided with front end fan shroud 116, rear end fan shroud in power section 106
119, fan 117, spin-ended 118.Fan 117 is located at the front end of blower.Based on 117 position of fan and air flow direction by blower
Cover is divided into front end fan shroud 116 and rear end fan shroud 119.Spin-ended 118 is provided on the outside of rear end fan shroud 119.Such as Fig. 3 institute
Show, the porous rotating device 104 includes hollow fixation porous disc 113, rolling bearing 115 and hollow rotation porous disc
114, rotation 114 inner ring of porous disc is fixedly connected with 115 outer ring of rolling bearing in porous rotating device 104, fixation porous disc 113
Inner ring is fixedly connected with 115 inner ring of rolling bearing, and the outer ring of fixed porous disc 113 is fixedly connected on wind-tunnel inner wall, is rotated porous
114 outer ring edge of disk is provided with gear, can cooperate with the crawler belt, and rotation porous disc 114 and rolling bearing 115 pass through fixation
The operation of crawler belt is rotated on the motor of wind-tunnel inner wall.Porous rotating device 104 is according to rotation porous disc 114 with rotation
The rotation of bearing 115 and the hole of fixed porous disc 113 align the air outlet to be formed to control air-flow flux, so that from test section
103 arrive the steady air current of diffuser 105, reduce because distribution of air flow unevenness causes the problem of primary passageway stream field uniformity difference.
At runtime, blower drives fan to the suction gust wind tunnel with porous rotating device of the utility model embodiment
117 rotations are able to generate suction air-flow, become uniform and stable through stable section 101 and contraction section 102 by primary passageway stream, flow through examination
It tests section 103 to communicate with diffuser 105 when locating porous rotating device 104, the motor control crawler belt that is fixed on wind-tunnel inner wall makes
The rolling bearing 115 being fixedly connected is rotated with rotation porous disc 114, when on rotation porous disc 114 and fixed porous disc 113
Hole bit-by-bit forms small air outlet, and the air-flow flux into diffuser 105 is minimum value, when rotation porous disc 114 and fixes
Hole bit-by-bit forms big air outlet on porous disc 113, and the air-flow flux into diffuser 105 is maximum value.According to above-mentioned two
Kind of operating mode, by rotating clockwise, or rotary motion porous disc 114 counterclockwise, when air-flow is inhaled into diffuser 105
Air-flow flux hair changes, so that 103 wind speed of test section generates height, ceaselessly variation forms fitful wind similar with natural wind, simultaneously
The rotation speed of rotation porous disc 114 can also be changed, have height to have low fitful wind so that generating frequency in test section 103.Work as hole
When position is completely coincident or hole location completely closes and the motor of adjusting rotation porous disc 114 is out of service, and gust wind tunnel is converted to
Conventional wind speed suction wind-tunnel.
In the present embodiment, be further designed to: spin-ended 118 on the rear end fan shroud 119 of power section 106 can be used as
Bracket plays the role of supporting blower and fan 117 and cover.Optionally, the outer lateral edge blower of rear end fan shroud 119 is radially
It is arranged multiple spin-ended 118.It in the present embodiment, is further designed to: the equal radial sections setting of stable section 101 and contraction section 102
There are honeycomb 120 and damping screen 121, for the unstable air-flow in upstream to be rectified into the air-flow in small whirlpool.
The wind speed of nature increases sometimes, reduces sometimes.Using professional speed instrument we have found that in different time scales
Under, there are different frequencies for the wind speed variation of nature.According to " the 7th part wind direction of QXT51-2007 surface weather observation specification and
Wind observation " regulation, in surface weather observation, the mean wind speed maximum value of any 10mi n is chosen out of given the period, is made
For the maximum wind velocity of the time.This " given period " may be day, the moon, ten days etc..Compared with ten days, the observing frequency of day wants high by one
A bit, it fluctuates while meeting is larger.But compared with Wind Engineering field, this time scale is with regard to too long.The Wind Engineering of profession is surveyed
1 second measurement frequency of measuring appratus can achieve thousand times, this has been applied in actual measurement.
The natural wind profile of surface layer be since the eddying motion ground friction of the large scale of atmosphere cooperatively forms,
In order to mainly be realized by putting wedge and roughness element in wind turbine apparatus simulation of atmospheric boundary layer wind field.The master of wedge
Acting on is the vortex that large scale is formed in wind-tunnel, and roughness element is then equivalent to the dietary fibres of actual ground, passes through the method
The mean wind speed and turbulivity section of different landforms feature can be simulated.But as wind engineering test requires to be continuously improved, mould
Type ratio constantly increases, and atmospheric boundary layer wind field is debugged in wind-tunnel and is become increasingly complex.
It is measured by special instrument it can be found that after air-flow passes through wedge and roughness element high frequency waves can be generated in 1s
It is dynamic, this characteristic with the wind in actual environment very close to.But timing is elongated to 10s, 30s, can find natural wind after 1 minute
There is also the period is longer, the biggish battle array size variation of amplitude, this is that current traditional wind-tunnel can not simulate.Its reason is wind
Although the velocity perturbation in 1s of the air-flow in hole is very violent, fluctuated up and down substantially about the known air speed value that power section gives
, the variation of its wind speed can be found after long-time measures averagely less, can not simulate the low-frequency effect of nature fitful wind.For
The fitful wind of nature can be more accurately simulated, we design and utility model gust wind tunnel.The fitful wind of this utility model
Wind-tunnel can not only generate the higher fluctuation of frequency, moreover it is possible to which the fitful wind effect that low frequency variations are generated in period demand compensates for
Conventional wind-tunnel can not simulate the low frequency variations effect of nature fitful wind.
By actual measurement it is found that gust wind tunnel can be simulated preferably in the battle array simulation to natural wind size variation
Out in its short time low-frequency range transient change effect.By comparison diagram 4 it is found that in 30s the analog result of gust wind tunnel with from
Right boundary fitful wind effect is almost the same.The natural wind wind spectrum that this certain comparison diagram is listed is that it changes relatively uniform a part,
When the low such as gentle breeze environment of nature wind speed, wind speed size variation is relatively low and mechanical periodicity is slow；When nature wind speed is very high
When such as harsher wind conditions, wind speed size variation is higher and mechanical periodicity is rapid.
Different low-frequency fluctuations can also be obtained after controlling by the rotation speed to porous rotating device, fluctuated
Effect can be corresponding with the wind speed of ambient wind velocity different stage.Simultaneously because hydraulic system piston motion makes the movement week of connecting rod
Phase is intended to sine, therefore by making test section wind speed generate sinusoidal variations after its adjustment throttle valve movement.Utilize air speed measuring apparatus
It can be found that the size of measured result overlapping area of each circular hole by fixed porous disc and when rotating porous disc spins after measurement
It influences, each centre bore overlapping area of overlapping area variation tendency the calculation shows that of single circular hole isWherein x is to fix the distance between circular hole and rotation circular hole, maximum value 2R, i.e.,
Circular hole and rotation circular hole are fixed during overlapping is with dislocation without blank Accreditation Waiting Area, is produced when the porous disc rotation frequency of rotation is lower
Raw wind speed period of change is slower, and the wind speed period of change generated when the porous disc rotation frequency of rotation is higher is very fast；It tested
V in journeymaxWhen only having intermediate hollow hole to there is air-flow to pass through when misplacing completely for fixed porous disc and rotation porous disc, main channel
Test section air velocity is maximum wind velocity, vminWhen being completely coincident for fixed porous disc and rotation porous disc, in disk each aperture with
When intermediate hollow hole is all ventilated, test section air velocity is the smallest wind speed.Wind speed maximal and minmal value in test section by
It is determined to each porous disc area with hollow hole area ratio, the wind speed if necessary to adjust maximin is poor, can be in fixation
The metal mesh that different meshes are installed on each circular hole on porous disc and rotation porous disc, makes each porous to the hollow gas flow hole in main channel
Shunt volume reduce, thus reach reduce main channel air-flow shunt volume, generate the relatively small effect of wind speed size variation amplitude
Fruit forms the fitful wind that the instantaneous size variation of wind speed is similar to nature.Theoretically, when the transmission variable-frequency motor of control driving belt
Rotation acceleration generate periodical size variation, original linear wind speed size variation effect can be made to be intended to sine wind
The fitful wind of fast size variation.
Claims (10)
1. a kind of suction gust wind tunnel with porous rotating device, comprising: sequentially connected stable section (101), contraction section
(102), test section (103), diffuser (105), power section (106) and outlet diffuser (107), in which: the power section
(106) side is connected to the outlet diffuser (107) communicated with the outside world, and the other side connects diffuser (105), and diffuser (105) is another
Side joint test section (103), test section (103) other end are connected with contraction section (102), and contraction section (102) other end connects
Connect the stable section (101) communicated with the outside world, it is characterised in that: be additionally provided with porous rotating device in the suction gust wind tunnel
(104)。
2. the suction gust wind tunnel according to claim 1 with porous rotating device, it is characterised in that: the porous rotation
Connectivity part is arranged between diffuser (105) and test section (103) in rotary device (104).
3. the suction gust wind tunnel according to claim 2 with porous rotating device, it is characterised in that: the porous rotation
Rotary device (104) includes hollow fixation porous disc (113), rolling bearing (115) and hollow rotation porous disc (114).
4. the suction gust wind tunnel according to claim 3 with porous rotating device, it is characterised in that: rotation porous disc
(114) inner ring is fixedly connected with rolling bearing (115) outer ring, and fixed porous disc (113) inner ring and rolling bearing (115) inner ring are solid
Fixed connection, the outer ring of fixed porous disc (113) are fixedly connected on wind-tunnel inner wall.
5. the suction gust wind tunnel according to claim 4 with porous rotating device, it is characterised in that: rotation porous disc
(114) operation of crawler belt is rotated on the motor by being fixedly mounted on wind-tunnel inner wall.
6. the suction gust wind tunnel according to claim 5 with porous rotating device, it is characterised in that: rotation porous disc
(114) outer ring edge is provided with gear, can cooperate with the crawler belt.
7. the suction gust wind tunnel according to claim 6 with porous rotating device, it is characterised in that: fixed porous disc
(113) outer ring is greater than the outer ring of rotation porous disc (114).
8. the suction gust wind tunnel according to claim 7 with porous rotating device, it is characterised in that: the rotation is more
Hole location size on porose disc (114) and fixed porous disc (113), shape and distribution situation are identical.
9. the suction gust wind tunnel according to claim 8 with porous rotating device, it is characterised in that: the rotation axis
Holding (115) is hollow bearing.
10. have the suction gust wind tunnel of porous rotating device in -9 described in any claim according to claim 1, it is special
Sign is: the stable section (101), contraction section (102), test section (103), porous rotating device (104), diffuser (105),
Power section (106) and outlet diffuser (107) are full steel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920378890.8U CN209372357U (en) | 2019-03-23 | 2019-03-23 | A kind of suction gust wind tunnel with porous rotating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920378890.8U CN209372357U (en) | 2019-03-23 | 2019-03-23 | A kind of suction gust wind tunnel with porous rotating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209372357U true CN209372357U (en) | 2019-09-10 |
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ID=67824431
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920378890.8U Withdrawn - After Issue CN209372357U (en) | 2019-03-23 | 2019-03-23 | A kind of suction gust wind tunnel with porous rotating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799061A (en) * | 2019-03-23 | 2019-05-24 | 国电环境保护研究院有限公司 | A kind of suction gust wind tunnel with porous rotating device |
-
2019
- 2019-03-23 CN CN201920378890.8U patent/CN209372357U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799061A (en) * | 2019-03-23 | 2019-05-24 | 国电环境保护研究院有限公司 | A kind of suction gust wind tunnel with porous rotating device |
| CN109799061B (en) * | 2019-03-23 | 2024-02-06 | 国电环境保护研究院有限公司 | Suction type gust wind tunnel with porous rotating device |
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