CN102735418A - Dirt adding method and device for wind tunnel test - Google Patents
Dirt adding method and device for wind tunnel test Download PDFInfo
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- CN102735418A CN102735418A CN2012101797708A CN201210179770A CN102735418A CN 102735418 A CN102735418 A CN 102735418A CN 2012101797708 A CN2012101797708 A CN 2012101797708A CN 201210179770 A CN201210179770 A CN 201210179770A CN 102735418 A CN102735418 A CN 102735418A
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- dirty
- wind tunnel
- add
- dirt
- dunghill
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a dirt adding method and device for a wind tunnel test. The dirt adding device comprises a frequency converter and a wind tunnel body, wherein a dirt adding system is arranged on the upper end of the wind tunnel body, and a convection system is arranged on the lower end of the wind tunnel body; dirt is added in a dirt adding cylinder and is scattered on a mesh; a dirt adding fan and a convection fan are started, and dirt particles are dispersed in the wind tunnel body through the mesh under the action of wind of the dirt adding fan; the frequency converter is regulated to ensure that the dirt adding fan and the convection fan are started at lowest working frequency; the concentration of the dirt is measured, and when a measurement result is constant, the concentration of the dirt is x1 indicating the concentration of the dirt in the wind tunnel body when the dirt adding device works at frequency y1Hz; and the frequency y2 of the frequency converter is regulated to be equal to (y1+5)Hz, and the corresponding concentration x2 of the dirt is measured. The invention can be widely applied to tests related to dirt, such as an external insulation wind tunnel test of power, an atmosphere pollutant dispersion test, and the like.
Description
Technical field
The present invention relates to and filthy relevant wind-tunnel technique, relate in particular to a kind of adding of wind tunnel test dirty method and device that is used for.
Background technology
The world today is in the period of comprehensive high speed development, and the mankind constantly improve science and technology, production, life efficient and automaticity, makes electric range of application more and more widely, and the degree that depends on electricity is also more and more stronger.Thing followed problem is that original balance of natural society is broken; Various industrial or agricultural flue dust, exhaust gas discharging; The change that global atmosphere is waited produces greenhouse effect, and disasteies such as hurricane, sandstorm, acid rain constantly take place, and electric system is produced the negative effect that can not be ignored.The electric system pollution flashover accident is continuous, has caused transmission line of electricity and electric substation's station equipment tripping operation, loss and huge.At present, the insulation flashover accident number of times that filth causes is occupied second in total accident number of times of electrical network, be only second to the damage to crops caused by thunder accident, and the loss that pollution flashover accident causes is 10 times of the damage to crops caused by thunder accident.This shows that pollution flashover accident serious threat the safe and stable operation of electrical network.
Anti-pollution measures such as power external insulation design, accent are climbed, hand sweeping all need be with power external insulation filth degree for instructing foundation; Therefore realize monitoring of power external insulation filth degree and prediction; Can effectively instruct the design and running of power external insulation to safeguard, and then realize the prevention of pollution flashover accident.Therefore, " insulator surface amasss dirty " test is very necessary, and this test needs wind-tunnel platform simulation atmospheric environment, so it is particularly important to add dirty method, must accomplish to add dirt evenly, and concentration is controlled.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art, provide a kind of add dirty even, filthy concentration controlled be used for adding of wind tunnel test dirty method and device.
The present invention realizes through following technical proposals:
A kind of dirty device of adding of wind tunnel test that is used for comprises frequency converter, wind tunnel noumenon, is provided with in the upper end of wind tunnel noumenon to add dirty system, is provided with convection system in the lower end of wind tunnel noumenon; Saidly add dirty system and comprise and add dirty tube, add to be disposed with from top to bottom in the dirty tube and add dirty blower fan, gauze; Said convection system comprises convective tube, and is arranged on the convection flow fan in the convective tube; Saidly add dirty blower fan, convection flow fan is connected with frequency converter.Saidly add dirty tube, convective tube flexibly connects with wind tunnel noumenon respectively.
A kind of dirty method of adding of wind tunnel test that is used for, following steps:
One, adds dirt
Add dunghill toward adding in the dirty tube, dunghill is scattered on the gauze, and the suction-operated between the filthy particle of dunghill can't see through gauze and fall in the wind tunnel noumenon;
Startup adds dirty blower fan and convection flow fan, is adding under the wind action of dirty blower fan, and filthy particle is scattering in the wind tunnel noumenon through gauze, and under the wind action of convection flow fan, filthy particle fully disperses in wind tunnel noumenon;
Two, regulate concentration
(1) regulate frequency converter, make to add under the low-limit frequency that dirty blower fan, convection flow fan be in work to start, low-limit frequency is made as y
1Hz;
(2) measure dunghill concentration, when the result who measures was constant, this moment, the concentration of dunghill was that to add dirty device busy frequency be y
1During Hz, the dunghill concentration x of dunghill in wind tunnel noumenon
1
(3) frequency of adjusting frequency converter is y
2=(y
1+ 5) Hz, and measure corresponding dunghill concentration x
2
(4) repeating step (3) up to the data that measure more than 5 groups, and utilizes data fitting to go out to add the rotating speed of dirty blower fan, convection flow fan and the funtcional relationship between the dunghill concentration.
Beneficial effect compared with prior art of the present invention is:
The present invention can realize in wind tunnel noumenon, adding dunghill equably, through dirty blower fan, convection flow fan and silk screen, dunghill is fully disperseed, and the concentration of convenient, flexible control dunghill.Add dirty tube, convective tube and the movable dismounting of silk screen.
Technological means of the present invention is simple and easy to do, can be widely used in the tests relevant with filth such as power external insulation wind tunnel test, atmosphere pollution diffusion test.
Description of drawings
Fig. 1 is a dirty apparatus structure synoptic diagram of adding of wind tunnel test of the present invention.
Embodiment
Below in conjunction with specific embodiment the present invention is done further concrete detailed description the in detail, but embodiment of the present invention is not limited thereto, the technological parameter for not indicating especially can carry out with reference to routine techniques.
Embodiment
As shown in Figure 1.The present invention is used for dirty device of adding of wind tunnel test, comprises frequency converter, wind tunnel noumenon 4, is provided with in the upper end of wind tunnel noumenon 4 to add dirty system, is provided with convection system in the lower end of wind tunnel noumenon 4; Saidly add dirty system and comprise and add dirty tube 2, add to be disposed with from top to bottom in the dirty tube 2 and add dirty blower fan 1, gauze 3; Said convection system comprises convective tube 5, and is arranged on the convection flow fan 6 in the convective tube 5; Saidly add dirty blower fan 1, convection flow fan 6 is connected with frequency converter.
Said dirt tube 2, the convective tube 5 of adding flexibly connects with wind tunnel noumenon 4 respectively, is convenient to dismounting.
Said gauze 3 adopts flexible connection with adding dirty tube 2, is convenient to change the gauze in different nets footpath, satisfies different requirement of experiment.
Be used for dirty method of adding of wind tunnel test, following steps:
One, adds dirt
Add dunghill 7 toward adding in the dirty tube 2, dunghill 7 is scattered on the gauze 3, and the suction-operated between the filthy particle of dunghill 7 can't see through gauze 3 and fall in the wind tunnel noumenon 4;
Startup adds dirty blower fan 1 and convection flow fan 6, and under the wind action that adds dirty blower fan 1, filthy particle is scattering in the wind tunnel noumenon 4 through gauze 3; Under the wind action of convection flow fan 6, filthy particle fully disperses in wind tunnel noumenon 4;
Two, regulate concentration
(1) regulate frequency converter, make to add under the low-limit frequency that dirty blower fan 1, convection flow fan 6 be in work to start, low-limit frequency is made as y
1Hz;
(2) measure dunghill 7 concentration, when the result who measures was constant, this moment, the concentration of dunghill 7 was that to add dirty device busy frequency be y
1During Hz, the dunghill 7 concentration xs of dunghill 7 in wind tunnel noumenon 4
1
(3) frequency of adjusting frequency converter is y
2=(y
1+ 5) Hz, and measure corresponding dunghill 7 concentration x
2
(4) repeating step (3) up to the data that measure more than 5 groups, and utilizes data fitting to go out to add dirty blower fan 1, the rotating speed of convection flow fan 6 and the funtcional relationship between dunghill 7 concentration.
After debugging finishes, in the function that simulates the needed concentration x substitution of test, obtain the frequency y of correspondence;
The frequency of regulating frequency converter is y, start add dirty blower fan 1, convection flow fan 6 begins to add dirt.Concentration in wind-tunnel 4 no longer changes, and dunghill 7 concentration in the wind-tunnel 4 are the concentration x of needed dunghill 7 at this moment, can begin to make an experiment.
Claims (3)
1. one kind is used for dirty device of adding of wind tunnel test, it is characterized in that: comprise frequency converter, wind tunnel noumenon, be provided with in the upper end of wind tunnel noumenon and add dirty system, be provided with convection system in the lower end of wind tunnel noumenon; Saidly add dirty system and comprise and add dirty tube, add to be disposed with from top to bottom in the dirty tube and add dirty blower fan, gauze; Said convection system comprises convective tube, and is arranged on the convection flow fan in the convective tube; Saidly add dirty blower fan, convection flow fan is connected with frequency converter.
2. according to the said dirty device of adding of wind tunnel test that is used for of claim 1, it is characterized in that: saidly add dirty tube, convective tube flexibly connects with wind tunnel noumenon respectively.
3. one kind is used for dirty method of adding of wind tunnel test, it is characterized in that following steps:
One, adds dirt
Add dunghill toward adding in the dirty tube, dunghill is scattered on the gauze, and the suction-operated between the filthy particle of dunghill can't see through gauze and fall in the wind tunnel noumenon;
Startup adds dirty blower fan and convection flow fan, is adding under the wind action of dirty blower fan, and filthy particle is scattering in the wind tunnel noumenon through gauze, and under the wind action of convection flow fan, filthy particle fully disperses in wind tunnel noumenon;
Two, regulate concentration
(1) regulate frequency converter, make to add under the low-limit frequency that dirty blower fan, convection flow fan be in work to start, low-limit frequency is made as y
1Hz;
(2) measure dunghill concentration, when the result who measures was constant, this moment, the concentration of dunghill was that to add dirty device busy frequency be y
1During Hz, the dunghill concentration x of dunghill in wind tunnel noumenon
1
(3) frequency of adjusting frequency converter is y
2=(y
1+ 5) Hz, and measure corresponding dunghill concentration x
2
(4) repeating step (3) up to the data that measure more than 5 groups, and utilizes data fitting to go out to add the rotating speed of dirty blower fan, convection flow fan and the funtcional relationship between the dunghill concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210179770.8A CN102735418B (en) | 2012-06-01 | 2012-06-01 | Dirt adding method and device for wind tunnel test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210179770.8A CN102735418B (en) | 2012-06-01 | 2012-06-01 | Dirt adding method and device for wind tunnel test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102735418A true CN102735418A (en) | 2012-10-17 |
| CN102735418B CN102735418B (en) | 2015-07-01 |
Family
ID=46991319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210179770.8A Expired - Fee Related CN102735418B (en) | 2012-06-01 | 2012-06-01 | Dirt adding method and device for wind tunnel test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175672A (en) * | 2013-02-28 | 2013-06-26 | 山东大学 | Construction machinery radiator air tunnel capable of simulating wind and sand impact and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0466830A (en) * | 1990-07-09 | 1992-03-03 | Mitsubishi Heavy Ind Ltd | Smoke wind tunnel |
| JPH0755632A (en) * | 1993-08-13 | 1995-03-03 | Ishikawajima Harima Heavy Ind Co Ltd | Wind-tunnel test facility |
| CN101196435A (en) * | 2007-12-26 | 2008-06-11 | 江苏大学 | Vehicle fuel oil consumption testing device through exhaustion dilution measurement |
| CN202661244U (en) * | 2012-06-01 | 2013-01-09 | 华南理工大学 | Filth adding device used in wind tunnel experiment |
-
2012
- 2012-06-01 CN CN201210179770.8A patent/CN102735418B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0466830A (en) * | 1990-07-09 | 1992-03-03 | Mitsubishi Heavy Ind Ltd | Smoke wind tunnel |
| JPH0755632A (en) * | 1993-08-13 | 1995-03-03 | Ishikawajima Harima Heavy Ind Co Ltd | Wind-tunnel test facility |
| CN101196435A (en) * | 2007-12-26 | 2008-06-11 | 江苏大学 | Vehicle fuel oil consumption testing device through exhaustion dilution measurement |
| CN202661244U (en) * | 2012-06-01 | 2013-01-09 | 华南理工大学 | Filth adding device used in wind tunnel experiment |
Non-Patent Citations (1)
| Title |
|---|
| 李玲 等: "颗粒浓度及颗粒尺寸对管内气固两相流动速度结构的影响", 《水动力学研究与进展》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175672A (en) * | 2013-02-28 | 2013-06-26 | 山东大学 | Construction machinery radiator air tunnel capable of simulating wind and sand impact and using method thereof |
| CN103175672B (en) * | 2013-02-28 | 2015-08-19 | 山东大学 | A kind of construction machinery radiator air tunnel and using method thereof simulating dust storm impact |
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| Publication number | Publication date |
|---|---|
| CN102735418B (en) | 2015-07-01 |
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