CN103900786A - Sand wind environment wind tunnel experiment model device for simulating different field wind directions - Google Patents
Sand wind environment wind tunnel experiment model device for simulating different field wind directions Download PDFInfo
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- CN103900786A CN103900786A CN201410134891.XA CN201410134891A CN103900786A CN 103900786 A CN103900786 A CN 103900786A CN 201410134891 A CN201410134891 A CN 201410134891A CN 103900786 A CN103900786 A CN 103900786A
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Abstract
The invention relates to a sand wind environment wind tunnel experiment model device for simulating different field wind directions. The sand wind environment wind tunnel experiment model device is characterized in that cylindrical roll balls are placed on the circumference of a circular roll ball tray arranged on a lifting support to support an experiment platform; the experiment platform is a circular disc, a sample is placed on the experiment platform, the disc is marked with a 360-degree dividing rule, a circumference rotating track is arranged below the experiment platform, a platform rotating shaft is arranged in the middle of the experiment platform, the bottom of the platform rotating shaft is provided with a variable speed big gear, a control switch controls a stepping motor, a stepping motor rotating shaft drives a small gear to rotate, the small gear drives the big gear at the bottom of the platform rotating shaft to rotate, the big gear drives the platform rotating shaft and the experiment platform to rotate, the circular roll ball tray on the lifting support on the lower portion is driven by the circumference rotating track below the experiment platform to rotate, and the experiment platform is embedded in the bottom of a sand wind environment wind tunnel experiment section to be flush with the bottom of the wind tunnel experiment section. The sand wind environment wind tunnel experiment model device can simulate the field wind directions comprehensively, solves the problem of the wind direction simulating error under changeable wind velocities and directions and provides experiment conditions for studying the sand wind movement characteristics under conditions of the different wind directions and the different wind velocities.
Description
Technical field
The present invention relates to
oneplant the different wind direction test units in blowing sand wind tunnel empirical model simulation field.
Background technology
Blowing sand wind tunnel test is the large-scale instrument and equipment designing for simulation field dust storm phenomenon.Blowing sand wind tunnel is generally divided into the parts such as power system, steady flow segment, contraction section, test section and diffuser.Carrying out in the simulated experiment of dust storm phenomenon, wind speed changes continuously speed governing in the scope of 2 meter per second～40 meter per seconds, and wind speed size is completed by manual control variator.In scientific experiment activity, the wind direction in wind-tunnel is fixed single, can not be as field 360 ° of wind directions all changing.Therefore studying different wind directions is an important physical amount of carrying out the research of stream and engineering calculation to the deflation of model.In the experimental study of wind sand environment hole observation wind-driven sediment, there is such problem, after a kind of wind direction has been tested, needing a period of time replacing model experiment angle to change empirical model is the problem that blowing sand wind tunnel test needs solve to the wind direction of experiment.
Summary of the invention
Object of the present invention provides for addressing the above problem exactly
oneplant the different wind direction test units in blowing sand wind tunnel empirical model simulation field.
Object of the present invention can reach by following measures:
oneplant the different wind direction test units in blowing sand wind tunnel empirical model simulation field, mainly by blowing sand wind tunnel test section, test specimen model, the round hole of test platform, circular ball pallet, test section bottom and lifting support composition.Lifting support is nested in support, puts into column type ball and support test platform with it on lifting support on the circular ball pallet circumference being equipped with, test platform is circular discs, test specimen model is placed on test platform top, on disk, be carved with 360 ° of rules, the round hole surrounding of rotation scale and test section bottom is lined with sponge block, there is circumference swing-around trajectory test platform below, platform rotating shaft is equipped with in centre, platform rotating shaft bottom, speed change is housed in support and has gear wheel, gauge tap control step motor, stepping motor rotating shaft drives pinion rotation, pinion wheel band moving platform rotating shaft bottom portion gear wheel rotates, gear wheel is with again moving platform rotating shaft and test platform rotation, circular ball pallet rotation on lifting support below driving by the circumference swing-around trajectory of below, in the round hole that test platform embedding blowing sand wind tunnel test section bottom has, and with fair at the bottom of test chamber.
Advantage of the present invention is:
1, simple in structure, easy to operate, practical, cost is low.In blowing sand wind tunnel test, as long as rotational model angle just can change the deflation of the wind direction of testing to model, the wind direction having solved in current wind-tunnel is the problem of fixed single.When gathering the data of stream under different wind direction and wind velocities, as long as rotate test platform, allow model sample just to wind direction surface, within the regular hour.Data in can obtaining during this period of time.
2, deft design is reasonable.On the disk of test platform top, be carved with the angle of 360 °, 1 ° of every lattice.In the middle of platform, there is rotating shaft below, has speed gear motoring ring test platform to rotate in rotating shaft, and test platform below has circular orbit to be connected with ball; Thereby reduce test platform rotation friction.On test platform support, stepper motor is housed, on motor axis, has pinion wheel, gear is connected with the gear wheel in platform rotating shaft, makes test platform slow rotation, thereby subtracts low-angle error.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1,
oneplant the different wind direction test units in blowing sand wind tunnel empirical model simulation field, formed by blowing sand wind tunnel test section 13, test specimen model 1, diameter 1000 ㎜ test platforms 2, support 3 and lifting support 9.Lifting support 9 is nested in support 3, and it supports test platform 2 on lifting support 9, to have circular ball pallet 6 circumference to put into column type ball 5 use; Test specimen model 1 is placed on test platform 2 tops, and test platform 2 is circular discs, is carved with 360 ° of rules 15 on disk, 1 ° of the every lattice of rule.Rotation scale 15 is lined with sponge block 17 with the round hole surrounding of test section 13 bottoms, there is circumference swing-around trajectory 4 test platform 2 belows, platform rotating shaft 7 is equipped with in centre, platform rotating shaft 7 bottoms, gear wheel 8 is housed in support 3, gauge tap 12 control step motors 11, on stepper motor 11, rotating shaft drives pinion wheel 10 to rotate, pinion wheel 10 drives gear wheel 8 to rotate, gear wheel 8 is with again moving platform rotating shaft 7 and test platform 2 to rotate, there is circular ball pallet 6 on the lifting support 9 below 4 drives of circumference swing-around trajectory to rotate by below, diameter 1000 ㎜ test platforms 2 embed blowing sand wind tunnel test section 13 bottoms and open in a round hole of 1004 ㎜.
The test specimen model 1 that field is fetched is put on test platform 2, starts lifting support 9, and sample surfaces and test section 13 bottoms are maintained an equal level.After arranging that test model completes on test platform 2, open moving stepper motor 11 switches, start gauge tap 12, stepper motor 11 rotates motoring ring test platform 2 and rotates, in the time reaching the wind direction angle needing, closing switch, test platform 2 stops the rotation, and starts blower fan and starts wind erosion sample to carry out wind speed deflation experiment, after one wind erosion period, closing control blower fan 12, starts to carry out measured data of experiment collection.Complete after the collection of wind erosion sample data, then open gauge tap 12, stepper motor 11 rotates when motoring ring test platform 2 turns to next the wind direction angle needing and stops the rotation, and starts next wind direction simulation weathering test.Thereby the making that guarantees to change model velocity and reduce test model, guarantees the exact value that experimental data is measured, and provides reliable test condition for studying dust storm motion characteristics under different wind direction and wind velocity conditions.
Claims (1)
1.
oneplant the different wind direction test units in blowing sand wind tunnel empirical model simulation field, mainly by blowing sand wind tunnel test section (13) test specimen model (1), the round hole (16) of test platform (2), circular ball pallet (6), test section (13) bottom and lifting support (9) composition, it is characterized in that lifting support (9) is nested in support (3), on circular ball pallet (6) circumference being equipped with on lifting support (9), put into column type ball (5) and support test platform (2) with it, test platform (2) is circular discs, test specimen model (1) is placed on test platform (2) top, on disk, be carved with 360 ° of rules (15), test platform (2) is lined with sponge block (17) with the round hole surrounding of blowing sand wind tunnel test section (13) bottom, there is circumference swing-around trajectory (4) test platform (2) below, platform rotating shaft (7) is equipped with in centre, platform rotating shaft (7) bottom, speed change is housed in support (3) and has gear wheel (8), gauge tap (12) control step motor (11), the upper rotating shaft of stepper motor (11) drives pinion wheel (10) to rotate, pinion wheel (10) band moving platform rotating shaft (7) bottom gear wheel (8) rotates, gear wheel (8) is with again moving platform rotating shaft (7) and test platform (2) rotation, circumference swing-around trajectory by below (, 4) drive the upper circular ball pallet (6) of lifting support (9) of below to rotate, in the round hole (16) that test platform (2) embedding blowing sand wind tunnel test section (13) bottom has, and maintain an equal level with test chamber (13) end.
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| CN201410134891.XA CN103900786A (en) | 2014-04-04 | 2014-04-04 | Sand wind environment wind tunnel experiment model device for simulating different field wind directions |
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| CN201410134891.XA CN103900786A (en) | 2014-04-04 | 2014-04-04 | Sand wind environment wind tunnel experiment model device for simulating different field wind directions |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104568372A (en) * | 2015-01-09 | 2015-04-29 | 吉林大学 | Wind tunnel experiment scale model supporting rack |
| CN104729823A (en) * | 2015-04-09 | 2015-06-24 | 中国科学院电工研究所 | Sand wind two-phase flow experiment device for buildings and building wind sand experiments |
| CN105628332A (en) * | 2016-03-25 | 2016-06-01 | 哈尔滨工业大学深圳研究生院 | Device for adjusting boundary layer wind tunnel test bottom turbulence degree by changing cylinder rotation speed |
| CN105806584A (en) * | 2016-05-09 | 2016-07-27 | 兰州大学 | Portable earth's surface sand-dust release observation instrument |
| CN105955186A (en) * | 2016-06-16 | 2016-09-21 | 河北工程大学 | Rotary table control system for sand-dust wind tunnel |
| CN107796590A (en) * | 2016-08-29 | 2018-03-13 | 长城汽车股份有限公司 | Support meanss and vehicle scale model wind tunnel test platform for vehicle test |
| CN107860553A (en) * | 2017-11-08 | 2018-03-30 | 重庆交通大学 | A kind of wind and snow environmental wind tunnel analogue means |
| CN107991055A (en) * | 2017-11-20 | 2018-05-04 | 重庆交通大学 | Gobi Integrated environment wind tunnel simulation device |
| CN108303230A (en) * | 2018-01-25 | 2018-07-20 | 广州大学 | A kind of test system for wind energy collecting device direction vibration wind tunnel test |
| CN108680329A (en) * | 2018-06-13 | 2018-10-19 | 郑州大学 | A kind of flow tunnel testing device and method of adjustable test piece relative position |
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| CN105955186A (en) * | 2016-06-16 | 2016-09-21 | 河北工程大学 | Rotary table control system for sand-dust wind tunnel |
| CN107796590A (en) * | 2016-08-29 | 2018-03-13 | 长城汽车股份有限公司 | Support meanss and vehicle scale model wind tunnel test platform for vehicle test |
| CN107860553A (en) * | 2017-11-08 | 2018-03-30 | 重庆交通大学 | A kind of wind and snow environmental wind tunnel analogue means |
| CN107991055A (en) * | 2017-11-20 | 2018-05-04 | 重庆交通大学 | Gobi Integrated environment wind tunnel simulation device |
| CN108303230A (en) * | 2018-01-25 | 2018-07-20 | 广州大学 | A kind of test system for wind energy collecting device direction vibration wind tunnel test |
| CN108303230B (en) * | 2018-01-25 | 2023-05-23 | 广州大学 | Test system for bidirectional vibration wind tunnel test of wind energy collector |
| CN108680329A (en) * | 2018-06-13 | 2018-10-19 | 郑州大学 | A kind of flow tunnel testing device and method of adjustable test piece relative position |
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Application publication date: 20140702 |