CN110174234A - Multi-functional wind system - Google Patents
Multi-functional wind system Download PDFInfo
- Publication number
- CN110174234A CN110174234A CN201910036593.XA CN201910036593A CN110174234A CN 110174234 A CN110174234 A CN 110174234A CN 201910036593 A CN201910036593 A CN 201910036593A CN 110174234 A CN110174234 A CN 110174234A
- Authority
- CN
- China
- Prior art keywords
- section
- wind speed
- runner
- collection
- low wind
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 claims abstract description 48
- 239000003381 stabilizer Substances 0.000 claims abstract description 29
- 230000008602 contraction Effects 0.000 claims abstract description 19
- 238000009792 diffusion process Methods 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 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
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of multi-functional wind system, including runner, room, power section are stayed, the runner includes air inlet, stable section, contraction section, collection section, changeover portion；The power section can be sucked air from air inlet using the pattern of air-breathing, flowed through stable section, contraction section, sprayed into and stay room, then enter changeover portion after collecting from collection section, discharge after passing through power section；Easy-to-mount low wind speed stabilizer is equipped on the runner at collection port rear, flow passage resistance force of waterproof can be increased, the revolving speed of wind system motor when so as to improve the test of low wind speed improves the rotary speed precision control of motor under low wind speed, thus improves flowing field stability of the wind system under the test of low wind speed.
Description
Technical field
The present invention relates to a kind of multi-functional wind systems more particularly to one kind to have both low wind speed test stability and high wind speed examination
Test the multi-functional wind system of stability.
Background technique
Anemobiagraph is widely used in production and living as the metering of wind speed, measuring device, to measure local environment
Wind speed.Attribute due to anemobiagraph as metrical instrument, need to guarantee its measurement reliability and precision, therefore factory or
It comes into operation and middle needs that the technical indicator of anemobiagraph is calibrated and examined and determine.
The calibration and calibrating of anemobiagraph need to meet the calibrating specification of anemobiagraph, such as the QX/T84-2007 of meteorological field
" meteorological low-speed wind tunnel conformance testing specifications ", it usually needs anemobiagraph carries out the test of high and low wind speed, with complete detection anemobiagraph
Performance.Calibrating anemobiagraph, which generallys use, can simulate the wind system for generating uniform flow field, and known in the technical field at present
Wind system is usually easier to realize the flowing field stability under high wind speed (V >=5m/s), and is difficult to realize low wind speed (V < 5m/s)
Under flowing field stability, the especially flowing field stability under very low velocity (V < 2m/s).Therefore, wind system is currently known to wind
All there is the integrity problem of low anemometer certification in the calibrating of fast instrument.Thus, it is desirable to which designing one kind has both low wind speed test stability
The multi-functional wind system of stability is tested, with high wind speed to be capable of the performance of complete detection anemobiagraph.
Summary of the invention
The more of low wind speed test stability and high wind speed test stability are had both the object of the present invention is to provide a kind of
Function wind system.
To achieve the above object the present invention have following technical solution: a kind of multi-functional wind system, including runner, stay room,
Power section, the runner include air inlet, stable section, contraction section, collection section, changeover portion；The power section uses the type of air-breathing
Formula can suck air from air inlet, flow through stable section, contraction section, spray into and stay room, then enter transition after collecting from collection section
Section, discharges after passing through power section；Fairing is equipped in the stable section；The contraction section is equipped with to be exported with stable section
It the import of connection and is exported with room communicates and sectional dimension is smaller than contraction section import contraction section is stayed；The collection section, which is located at, to be stayed
The front of interior, collection section is equipped with collection port；It is described that there is the wind speed test being located between contraction section outlet and collection port in room
Region；The runner at the collection port rear is equipped with easy-to-mount low wind speed stabilizer, need to carry out in wind speed test area low
When wind speed is tested, which can be installed on the stability on runner to improve wind speed test area flow field.
Further improvement scheme: the low wind speed stabilizer is a kind of air drag device.
Further improvement scheme: the low wind speed stabilizer is flaps, and flaps is equipped with regularly arranged venthole.
Further improvement scheme: the flaps periphery, which is equipped with, is fixed on runner upper installing hole for flaps.
Further improvement scheme: the low wind speed stabilizer is resistance frame, and resistance frame includes being installed on runner
Frame and the damping screen being installed on frame.
Further improvement scheme: the low wind speed stabilizer is set on the collection section of runner.
Further improvement scheme: the collection section is equipped with lifting lug, and the top in room is equipped with guide runner, the collection section
It is hung in guide runner and is moved by lifting lug, the low wind speed stabilizer is between collection section and changeover portion.
Further improvement scheme: the low wind speed stabilizer is set on the changeover portion of runner.
Further improvement scheme: the changeover portion has coaxial diffusion structure, which is that several sections are big
The support frame of small different cylinder and connector drum, and the cylinder is concentric setting.
Further improvement scheme: the changeover portion has coaxial diffusion structure, and above-mentioned low wind speed stabilizer is removably pacified
Front loaded on coaxial diffusion structure.
Multi-functional wind system of the invention has the following beneficial effects: on the runner at collection port rear equipped with easy to disassemble
Low wind speed stabilizer, flow passage resistance force of waterproof can be increased, so as to improve low wind speed test when wind system motor revolving speed, improve
The rotary speed precision control of motor under low wind speed, thus improves flowing field stability of the wind system under the test of low wind speed.
Detailed description of the invention
Fig. 1 is the perspective cut-away schematic diagram of the multi-functional wind system of the present invention；
Fig. 2 is the side schematic view of the multi-functional wind system of the present invention；
Fig. 3 is the partial enlarged view of part-structure shown in Fig. 1；
Fig. 4 is the front schematic view of first embodiment of the invention flaps；
Fig. 5 is the partial enlarged view of circle shown in Fig. 1；
Fig. 6 is the front schematic view of second embodiment of the invention flaps；
Fig. 7 is the stereoscopic schematic diagram of coaxial diffuser shown in Fig. 1.
Specific embodiment
Please refer to shown in Fig. 1 to Fig. 7, for the invention discloses a kind of multi-functional wind system schematic diagram, wherein Fig. 6 shows
The second embodiment schematic diagram of flaps, please preferentially refering to fig. 1 to shown in Fig. 5 and Fig. 7, which includes
Bracket 1 and the runner being installed on bracket 1 stay room 5 and power section 8, and runner includes being located on same central axis and being connected to exist
Air inlet 2, stable section 3, contraction section 4, collection section 6 and changeover portion 7 together.It is sealing structure that room 5 should be stayed in a state of use,
And it is equipped with a pair of openings and door, which is interconnected with contraction section and changeover portion respectively, described to stay in room 5 in contraction section
Wind speed test area is formed between 4 and collection section 6.The mountable anemobiagraph 9 of wind speed test area in room 5, carries out
Calibration, the calibrating of anemobiagraph.The door in room 5 has the function of that facilitate disengaging to stay room operates in wind speed test area.At this
In embodiment, which is located in wind speed test area and is located in front of the collection port of collection section, is detailed later.
In the present embodiment, motor and motor-driven fan (not shown) are installed in the power section 8, it is described dynamic
Power section 8 can be sucked air from air inlet 2 using the pattern of air-breathing, flow through stable section 3, contraction section 4, stay room 5, collection section 6,
Changeover portion 7, using being discharged after power section 8；It is equipped with fairing (such as damping screen, honeycomb) in the stable section 4, with
Air-flow is rectified, keep air-flow full and uniform and is stablized；The contraction section 4 be equipped with the import of stable section outlet and with
The contraction section outlet 41 that opening in room communicates and sectional dimension is smaller than contraction section import, which can uniformly accelerate air-flow
Flowing, reaches the required flow velocity of hermetic type trial zone in indoor air velocity；The collection section 6 be located at stay room 5 in and with stay room
It communicates, the front of collection section 6 is equipped with collection port 61；The room 5 of staying is closed space structure；The room 5 of staying has positioned at receipts
Contracting section exports the wind speed test area 51 between 41 and collection port 61, and wind speed test, and above-mentioned wind are carried out under analog wind environment
Fast instrument 9 is installed in the wind speed test area 51.2 end of air inlet is equipped with separation net 21, that is, be arranged in that air flows into opens
Mouth end, which is woven by the steel wire 22 of more vertical arrangements according to certain being intervally arranged, and is formed several small
Poroid 23, to prevent foreign matter from entering in the body of hole.The multi-functional wind system is further provided with the guide runner for being located at and staying in 5 top of room
52, the collection section 6 is equipped with removable low wind speed stabilizer 62 and lifting lug 63, which is hung over by lifting lug 63 and led
It is moved left and right in sliding slot 52, facilitates the replacement or dismounting of low wind speed stabilizer 62；In the present embodiment, the low wind speed stabilizer
62 are located at 6 rear portion of collection section and using bolt fastening in staying on room, and the low wind speed stabilizer 62 is located at collection section 6 and changeover portion
Between 7, when wind speed test area 51 needs the test of low wind speed, which is installed on collection section 6, can be increased
Air flows through the resistance of collection section, the revolving speed of motor when improving low wind speed wind speed test, to improve the low wind speed wind speed
The rotary speed precision control of motor when test, the flowing field stability of wind speed test area 51 when thus improving the test of low wind speed.
Referring again to shown in Fig. 7, the changeover portion 7 has coaxial diffusion structure, and certainly, front end or rear end can also have
Straight section transition is connect with counter structure respectively, has several cylinders of different sizes in the coaxial diffusion structure, in present embodiment
In, which is gradually smaller first cylinder 71 of size, the second cylinder 72 and third cylinder 73, and passes through support frame 74
Several cylinder connections are integral, and first, second, third cylinder is concentric setting, is had the kinetic energy of air-flow
Pressure energy is reverted to, to reduce air-flow in the energy loss in 7 downstream of changeover portion, it can be seen from the above, the low wind speed stabilizer
62 are also mountable to the front of changeover portion 7, equally can solve technical problem of the invention.
Referring again to shown in Fig. 3 to Fig. 5, the low wind speed stabilizer 62 is a kind of air drag device, in this embodiment party
In formula, which is flaps, and flaps periphery is equipped with the mounting hole being fixed on flaps on collection section；
When wind system needs to carry out the test of low wind speed, low wind speed stabilizer 62 can be mounted in 6 rear of collection section, to improve wind speed test
The stability of 51 wind speed of region tears low wind speed stabilizer 61 open when wind system needs to carry out high wind speed test from collection section 6
It removes, thus, by convenient and fast removable assembling structure, the demand according to high speed or slow-speed test decides whether that installing low wind speed stablizes
Device has effects that easy to use, effect is obvious, reduces cost, and the wind system is enable to have both low wind speed test simultaneously
Stability and high wind speed test stability, overcome the defect of the prior art.
One end of the collection section 6 forms the collection port 61 towards external expansion, and the other end corresponds to the setting of changeover portion 7, outwardly
Expansion end can collect more air quantity.In the present embodiment, which is equipped with regularly arranged venthole 64, and receives
Collect multiple balance holes 65 that section 6 is equipped in front of collection port rear, flaps, which can balance into collection section
Air-flow, and cushioning balance is served to the pulsation pressure difference acted in the inside and outside wall in room 5, to weaken the shock of free jet vortex
The structural vibration caused by the room 5.
It in the present embodiment, can be in collection section 6 when anemobiagraph 9 needs to detect the reliability under 2~5m/s wind speed
Above-mentioned flaps 62 is installed, and several ventholes 64 of the flaps 62 circumferentially arrange, and can form more ventholes.?
Driving fan rotates to form wind speed air flow in the case that motor operates, due to being provided with the flaps 62 of venthole 64, from
And the air-flow flow resistance at this is increased, reduce into the air quantity in changeover portion 7.Therefore, as needed in wind speed trial zone
Domain reach with wind speed identical when not installing flaps, then need the motor in power section 8 to improve revolving speed, so that power section generates
Bigger supercharging amount removes flow passage resistance force of waterproof caused by overcoming installation flaps.To which make at low wind speeds can also accurate detection wind speed
The precision of instrument 9, and the revolving speed without reducing motor, can prevent motor from operating at the low rotational speed for a long time, prevent motor
The risk of heating burnout.
Fig. 6 is the second embodiment schematic diagram of flaps, when wind system carries out the lower wind speed measurement of anemobiagraph 9
(when such as 0.2~2m/s), most common is exactly threshold wind velocity (usually 0.5m/s) detection of anemobiagraph, can replace another resistance
Power plate 62 ', flaps 62 ' as shown in FIG. 6, the venthole 64 ' of the flaps 62 ' is substantially in the rectangular knot of transverse and longitudinal arrangement
Structure, but the actual internal area of the venthole 64 ' of the flaps 62 ' is less than the actual internal area of the venthole 64 of flaps 62, i.e.,
It is bigger than flow passage resistance force of waterproof caused by installation flaps 62 that flow passage resistance force of waterproof caused by flaps 62 ' is installed.
Certainly, above-mentioned low wind speed stabilizer 62 can also be resistance frame, i.e. resistance frame includes being installed on collection section
Frame and the damping screen being installed on frame, which, which is equipped with, is fixed on the mounting hole on collection section (not for resistance frame
Diagram).Installation can be facilitated on collection section by the resistance frame, and the venthole of the damping screen is than comparatively dense, so as to
Biggish flow passage resistance force of waterproof is provided.
When replacement, since collection section 6 is slidably connected in room 5 by lifting lug 63 and guide runner 52, it is only necessary to will collect
Section 6 is mobile towards left end, increases flaps at a distance from changeover portion, and remove previous flaps 62, changes new flaps 62 ',
And it is again that collection section 6 is mobile towards right end, make to fasten after collection section 6 is corresponding with changeover portion 7, so that air-flow can be from collection section 6
Into in changeover portion 7.Thus, it is possible to further increase flow passage resistance force of waterproof, it is lowered into the air quantity of changeover portion 7, to realize wind speed
In test area when identical test wind speed motor speed raising, can more accurately detect reliable under the low wind speed of anemobiagraph
Property.
The present invention is tried by the way that demountable flaps 62 will be arranged on the collection section of multi-functional wind system, and according to wind speed
The test demand for testing region difference wind speed, replaces different flaps, and adjustable flow passage resistance force of waterproof makes low wind speed also can when testing
Guarantee that power section motor operates under higher rotation speed, improves the rotary speed precision control of motor, take into account wind system so as to realize
The demand of low wind speed test stability realizes that a set of wind system is provided simultaneously with low wind speed test stability and high wind speed test is stablized
The multifunction test ability of property.
Embodiment of above is that low wind speed stabilizer is installed on the collection section of runner, certainly low wind speed stabilizer installation
Position is not limited to this, can also be installed on the diffuser of runner, it equally also may be implemented and adjusts flow passage resistance force of waterproof, makes low wind
It also can guarantee that power section motor operates under higher rotation speed when speed test, the rotary speed precision control of motor improved, to realize simultaneous
Care for the purpose of the low wind speed test stability of wind system.Further, which may be mounted at embodiment as above
The front of the coaxial diffusion structure of middle diffuser.
Although for illustrative purposes, the preferred embodiment of the present invention is had been disclosed, but the ordinary skill people of this field
Member will realize without departing from the scope and spirit of the invention as disclosed by the appended claims, various to change
Into, increase and replace be possible.
Claims (10)
1. a kind of multi-functional wind system, including runner, stay room, power section, the runner include air inlet, stable section, contraction section,
Collection section, changeover portion；The power section can be sucked air from air inlet using the pattern of air-breathing, flowed through stable section, shunk
Section sprays into and stays room, then enters changeover portion after collecting from collection section, discharges after passing through power section；It is set in the stable section
There is fairing；The contraction section be equipped with the import of stable section outlet and with stay room communicate and sectional dimension than shrink
The small contraction section outlet of section import；The collection section, which is located at, stays interior, and the front of collection section is equipped with collection port；It is described to have in room
Wind speed test area between contraction section outlet and collection port；It is characterized by: being set on the runner at the collection port rear
There is easy-to-mount low wind speed stabilizer, it, can be by the low wind speed stabilizer when wind speed test area need to carry out the test of low wind speed
It is installed on the stability that wind speed test area flow field is improved on runner.
2. multi-functional wind system according to claim 1, it is characterised in that: the low wind speed stabilizer is a kind of air resistance
Power device.
3. multi-functional wind system according to claim 2, it is characterised in that: the low wind speed stabilizer is flaps, resistance
Power plate is equipped with regularly arranged venthole.
4. multi-functional wind system according to claim 3, it is characterised in that: the flaps periphery, which is equipped with, consolidates flaps
Due to runner upper installing hole.
5. multi-functional wind system according to claim 2, it is characterised in that: the low wind speed stabilizer is resistance frame,
Resistance frame includes the frame being installed on runner and the damping screen that is installed on frame.
6. multi-functional wind system according to claim 1, it is characterised in that: the low wind speed stabilizer is set to runner
On collection section.
7. multi-functional wind system according to claim 6, it is characterised in that: the collection section is equipped with lifting lug, described to stay
The top of room is equipped with guide runner, which is hung in guide runner by lifting lug moves, which is located at collection section
Between changeover portion.
8. multi-functional wind system according to claim 1, it is characterised in that: the low wind speed stabilizer is set to runner
On changeover portion.
9. multi-functional wind system according to any one of claim 1 to 8, it is characterised in that: the changeover portion has same
Axis diffusion structure, the coaxial diffusion structure are the support frame of the different cylinder and connector drum of several cross-sectional sizes, and the cylinder
For concentric setting.
10. multi-functional wind system according to claim 1, it is characterised in that: the changeover portion has coaxial diffusion structure,
Above-mentioned low wind speed stabilizer is mounted at the front of coaxial diffusion structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036593.XA CN110174234A (en) | 2019-01-15 | 2019-01-15 | Multi-functional wind system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036593.XA CN110174234A (en) | 2019-01-15 | 2019-01-15 | Multi-functional wind system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110174234A true CN110174234A (en) | 2019-08-27 |
Family
ID=67689099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910036593.XA Pending CN110174234A (en) | 2019-01-15 | 2019-01-15 | Multi-functional wind system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110174234A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006838A (en) * | 2019-11-29 | 2020-04-14 | 中国航天空气动力技术研究院 | Nested movable wind tunnel collector device |
| CN111272382A (en) * | 2020-03-31 | 2020-06-12 | 杭州佐格通信设备有限公司 | Damping net mounting structure of wind tunnel and wind tunnel |
| CN113155400A (en) * | 2021-04-25 | 2021-07-23 | 华南理工大学 | Low-speed wind tunnel device |
| CN117890061A (en) * | 2024-03-18 | 2024-04-16 | 百林机电科技（苏州）有限公司 | Wind tunnel combined with robot and calibrated by full-automatic anemometer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656979Y (en) * | 2003-11-03 | 2004-11-17 | 鞍山市光学仪表有限公司 | Low speed wind tunnel detecting device |
| CN1945347A (en) * | 2006-08-31 | 2007-04-11 | 艾默生网络能源有限公司 | Air passage and its control method |
| JP2015045620A (en) * | 2013-08-29 | 2015-03-12 | 株式会社大気社 | Wind tunnel test device |
| CN105382521A (en) * | 2015-10-16 | 2016-03-09 | 北京农业智能装备技术研究中心 | Device and method for detaching and installing wind tunnel damping net |
| CN107084829A (en) * | 2017-06-12 | 2017-08-22 | 西南交通大学 | A kind of atmospheric boundary layer wind tunnel |
| CN209326927U (en) * | 2019-01-15 | 2019-08-30 | 昆山市三维换热器有限公司 | Multi-functional wind system |
-
2019
- 2019-01-15 CN CN201910036593.XA patent/CN110174234A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656979Y (en) * | 2003-11-03 | 2004-11-17 | 鞍山市光学仪表有限公司 | Low speed wind tunnel detecting device |
| CN1945347A (en) * | 2006-08-31 | 2007-04-11 | 艾默生网络能源有限公司 | Air passage and its control method |
| JP2015045620A (en) * | 2013-08-29 | 2015-03-12 | 株式会社大気社 | Wind tunnel test device |
| CN105382521A (en) * | 2015-10-16 | 2016-03-09 | 北京农业智能装备技术研究中心 | Device and method for detaching and installing wind tunnel damping net |
| CN107084829A (en) * | 2017-06-12 | 2017-08-22 | 西南交通大学 | A kind of atmospheric boundary layer wind tunnel |
| CN209326927U (en) * | 2019-01-15 | 2019-08-30 | 昆山市三维换热器有限公司 | Multi-functional wind system |
Non-Patent Citations (1)
| Title |
|---|
| 刘政崇, 刘琴, 张国彪: "低速风洞快速变速装置实验研究", 实验流体力学, vol. 19, no. 01 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006838A (en) * | 2019-11-29 | 2020-04-14 | 中国航天空气动力技术研究院 | Nested movable wind tunnel collector device |
| CN111006838B (en) * | 2019-11-29 | 2021-10-01 | 中国航天空气动力技术研究院 | Nested movable wind tunnel collector device |
| CN111272382A (en) * | 2020-03-31 | 2020-06-12 | 杭州佐格通信设备有限公司 | Damping net mounting structure of wind tunnel and wind tunnel |
| CN113155400A (en) * | 2021-04-25 | 2021-07-23 | 华南理工大学 | Low-speed wind tunnel device |
| CN117890061A (en) * | 2024-03-18 | 2024-04-16 | 百林机电科技（苏州）有限公司 | Wind tunnel combined with robot and calibrated by full-automatic anemometer |
| CN117890061B (en) * | 2024-03-18 | 2024-05-28 | 百林机电科技（苏州）有限公司 | Wind tunnel combined with robot and calibrated by full-automatic anemometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110174234A (en) | Multi-functional wind system | |
| CN100401034C (en) | Horizontal pumping system and pumping control method for automobile wind tunnel | |
| CN201060093Y (en) | 3/4 opening reversed flow type automobile model wind-tunnel test device | |
| CN106837840B (en) | It is a kind of to be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents | |
| CN209326927U (en) | Multi-functional wind system | |
| CN217358930U (en) | Air resistance detection device of gas filter | |
| CN106404340A (en) | Wind tunnel collecting port | |
| CN208458950U (en) | Building element testing machine and its building element test cover | |
| CN103743537B (en) | For pressurize delivery device and the method for PIV experiment trace particle | |
| CN208534819U (en) | Device for the test of fan aeroperformance | |
| JPS6113112A (en) | Air flow rate measuring apparatus | |
| CN202471748U (en) | Air quantity cover capable of measuring wind speed | |
| CN209296533U (en) | A kind of test device measuring air filtrate filter efficiency | |
| CN201016868Y (en) | Dynamic property testing device for air quantity control valve | |
| CN206656845U (en) | A kind of blowing sand wind tunnel Combined-type portable sand-taped instrument | |
| CN209145943U (en) | It is a kind of for testing the experimental rig of fan performance | |
| CN110207905B (en) | Guide vane water leakage detection system | |
| KR20020037174A (en) | Experimental apparatus for flight principle by using mini subsonic wind tunnel | |
| CN114778162A (en) | Ventilation system filtering performance testing device and method for railway vehicle | |
| CN203758718U (en) | Pressure maintaining put-in device used for PIV experiment tracer particle | |
| CN209469606U (en) | A kind of double testing laboratories of wind pressure noise | |
| CN208313536U (en) | Live door and window detector calibrating installation | |
| CN208366416U (en) | Barometric bin level meter | |
| CN201255677Y (en) | Air fluid pressure sensor | |
| CN204389066U (en) | There is the retardance formula total temperature probe of circular air intake opening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |