CN104949818A - Sand starting wind speed observation device - Google Patents
Sand starting wind speed observation device Download PDFInfo
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- CN104949818A CN104949818A CN201410115627.1A CN201410115627A CN104949818A CN 104949818 A CN104949818 A CN 104949818A CN 201410115627 A CN201410115627 A CN 201410115627A CN 104949818 A CN104949818 A CN 104949818A
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Abstract
The invention relates to a sand starting wind speed observation device. The sand starting wind speed observation device is characterized in that soil wind erosion wind tunnel test segments are arranged at the left end and the right end of a glass transparent test segment; the glass transparent test segment has a top transparent rectangular chamber; the top of the glass transparent test segment is provided with a camera elevating bracket; the camera elevating bracket is provided with a camera and a photographing controller; the camera corresponds with a test platform at the top of the glass transparent test segment; the test platform is disc-shaped and a soil wind erosion testing sample is placed on the disc-shaped test platform; the photographing controller is connected with a computer and a display device; a digital micro-pressure anemometer fixes a wind speed measuring Pitot tube through a silica gel flexible pipe and a Pitot tube fixing seat; the wind speed measuring Pitot tube is placed at the middle part of the sectional area of the glass transparent test segment and is level with the bottom board of the chamber; the dynamic pressure port of the wind speed measuring Pitot tube is aligned with the wind; a lead which is connected with a wind speed variable-frequency controller passes through the soil wind erosion wind tunnel test segments and is connected with a motor; and the motor is connected with a propeller through a belt. The sand starting wind speed observation device has functions of settling a problem of a simulated wind direction error in the variable sand starting wind speed in a wind sand flow field, ensuring accurate measuring value of testing data, and providing a test condition for researching characteristics of wind sand motion at different wind speeds.
Description
Technical field
The present invention relates to a kind of blowing sand wind tunnel test section grains of sand threshold wind velocity observation device.
Background technology
Soil drifting wind tunnel test is the large-scale instrument and equipment designed for simulating field dust storm phenomenon.Soil drifting wind-tunnel one be divided into the parts such as power system, rectification section, contraction section, test section, sediment feeding hopper and diffuser.In the simulated experiment carrying out dust storm phenomenon, wind speed consecutive variations speed governing in the scope of 2 meter per second ~ 40 meter per seconds, wind speed size is completed by manual control variator.In scientific experiment activity, grains of sand threshold wind velocity size observation in field is very difficult, studies different earth's surfaces particle threshold wind velocity size very inconvenient, and artificially large on grains of sand impact interference, observation wind speed size data precision is not high.And variable grain deflation threshold wind velocity carries out the Soil Erosion Modelling Study of stream and an important physical amount of engineering calculation.The observation of one grains of sand threshold wind velocity is testing crew eyes observing earth soil particle threshold wind velocity size outside wind sand environment hole, decreases the interference of people.In test observation, there is such problem, observation is required great effort very much, there is personal error larger.
Summary of the invention
Based on above-mentioned, object of the present invention provides a kind of grains of sand threshold wind velocity observation device.Wind tunnel model is utilized to carry out simulated experiment, for solving a kind of device artificially developed grains of sand impact interference.
Object of the present invention can be reached by following measures:
A kind of grains of sand threshold wind velocity observation device, by test platform, glass transparent test section, measuring wind speed pitot tube, digital minute-pressure wind gage, camera, soil drifting detects sample and computing machine forms.Soil drifting test chamber occupy two ends, glass transparent test section left and right, glass transparent test section is top transparent rectangle hole body, camera lifting support is equipped with at its top, camera lifting support is equipped with camera and camera controller, test platform bottom the corresponding glass transparent test section of camera, test platform likeness in form disc, disk is placed soil drifting and detects sample; Camera controller is connected with computing machine, display, digital micro manometer fixes measuring wind speed pitot tube by silica gel hose and skin hauling pipe holder, measuring wind speed pitot tube is placed to the centre of glass transparent test section sectional area and hole body base plate maintains an equal level, its pitot aperture aims at wind speed wind speed frequency-variable controller) wire that connects is connected with variable-frequency motor through soil drifting test chamber, and variable-frequency motor is connected with screw propeller.
Advantage of the present invention is:
1, wind speed frequency-variable controller is utilized to control variable-frequency motor and screw propeller adjustment wind speed, digital minute-pressure wind gage record measuring wind speed pitot tube wind speed in glass transparent test section, take the scene of grains of sand movement under certain wind speed by high-resolution camera, and measured in real time by computing machine, display and carry out data acquisition.The invention solves grains of sand threshold wind velocity observation device simulation field wind direction experiment in sand-flow field.Solve the problem in changeable wind transmission speed Imitating wind direction error, thus ensure the making of changing model velocity and reducing test model, ensure the exact value that experimental data is measured, for dust storm motion characteristics under studying different wind friction velocity provide reliable test condition.
2, the pitot aperture of measuring wind speed pitot tube aims at the data that wind speed can gather stream under different wind speed, within the regular hour.Digital micro manometer can obtain the data of sand drift amount during this period of time.
3, structure of the present invention is simple, and reasonable in design, easy to operate, practical, cost is low.Decrease the interference of people, ensure the exact value that experimental data is measured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of grains of sand threshold wind velocity observation device, by test platform 3, glass transparent test section 2, measuring wind speed pitot tube 8, digital minute-pressure wind gage 9, camera 5, soil drifting detects sample 4 and computing machine 12 forms.Soil drifting test chamber 1 occupy glass transparent test section about 2 two ends, glass transparent test section 2 is top transparent rectangle hole body, camera lifting support 6 is equipped with at the top of glass transparent test section 2, camera lifting support 6 is equipped with camera 5 and camera controller 7.Camera lifting support 6 oscilaltion is regulated by camera controller 7.Test platform 3 bottom the corresponding glass transparent test section 2 of camera 5, test platform 3 is similar to disc, disk is placed soil drifting and detects sample 4; Camera controller 7 is connected with computing machine 12, display 13, digital minute-pressure wind gage 9 fixes measuring wind speed pitot tube 8 by silica gel hose 10 skin hauling pipe holder 11, measuring wind speed pitot tube 8 is installed to the centre of glass transparent test section 2 sectional area and hole body base plate maintains an equal level, it is fair with wind-tunnel base plate that its pitot aperture aims at the centre that wind speed 17 is placed in test section sectional area, the wire that wind speed frequency-variable controller 14 connects is connected with variable-frequency motor 15 through soil drifting test chamber 1, and variable-frequency motor 15 is equipped with screw propeller 16 with glass transparent test section 2 one end and is connected.
Test platform 3 is put into the soil drifting sample 4 fetched in field, maintains an equal level bottom soil drifting sample 4 surface and test section.After test platform being arranged test specimen completes, opening installation, at hole, glass test section 2 top, is elevated mounted high-resolution camera 5 in the body of hole, debugging camera 5 focal length, stop when camera 5 reaches the best observation angle of needs, fixing camera lifting support 6.Measuring wind speed pitot tube 8 maintains an equal level with glass transparent test section 2 base plate, its pitot aperture aims at wind speed 17, wind speed frequency-variable controller 14 controls variable-frequency motor 15 and screw propeller 16 adjusts wind speed, digital minute-pressure wind gage 9 records measuring wind speed pitot tube 8 wind speed 17 in glass transparent test section 2, when wind speed 17 controls after trial value, by camera lifting support 6 is equipped with high-resolution camera 5, takes the scene of grains of sand movement under certain wind speed, and carries out data acquisition by the measurement in real time of computing machine 12, display 13.
Claims (1)
1. a grains of sand threshold wind velocity observation device, by test platform (3), glass transparent test section (2), measuring wind speed pitot tube (8), camera (5), soil drifting detects sample (4) and computing machine (12) composition, it is characterized in that earth wind erosion test chamber (1) occupy glass transparent test section (2) two ends, left and right, glass transparent test section (2) is top and transparent pane shape hole, both sides, left and right body, camera lifting support (6) is equipped with at the top of glass transparent test section (2), camera lifting support (6) is equipped with camera (5) and camera controller (7), the test platform (3) of corresponding glass transparent test section (2) bottom of camera (5), test platform (3) likeness in form disc, disk is placed soil drifting and detect sample (4), camera controller (7) and computing machine (12), display (13) connects, digital minute-pressure wind gage (9) is by silica gel hose (10) the fixing measuring wind speed pitot tube (8) of skin hauling pipe holder (11), measuring wind speed pitot tube (8) is installed to the centre of glass transparent test section (2) sectional area and hole body base plate maintains an equal level, its pitot aperture aims at wind speed (17), the wire that wind speed frequency-variable controller (14) connects is connected with variable-frequency motor (15) through soil drifting test chamber (1), variable-frequency motor (15) is connected with screw propeller (16) by belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115627.1A CN104949818A (en) | 2014-03-26 | 2014-03-26 | Sand starting wind speed observation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115627.1A CN104949818A (en) | 2014-03-26 | 2014-03-26 | Sand starting wind speed observation device |
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| CN104949818A true CN104949818A (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410115627.1A Pending CN104949818A (en) | 2014-03-26 | 2014-03-26 | Sand starting wind speed observation device |
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| CN (1) | CN104949818A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203720A (en) * | 2015-10-29 | 2015-12-30 | 中国地质大学（北京） | Test device and test method for wind, sand and underground water interaction |
| CN106680193A (en) * | 2017-03-08 | 2017-05-17 | 河南大学 | Portable wind erosion simulation method and device used outdoors |
| CN111896214A (en) * | 2020-07-10 | 2020-11-06 | 太原理工大学 | Open-air coal pile dust-rising amount test similar experiment system and measurement method |
| CN113390603A (en) * | 2021-06-17 | 2021-09-14 | 哈尔滨工业大学 | Wind speed measuring device for low-pressure high-speed Mars wind tunnel and precision improving method thereof |
| CN113465865A (en) * | 2021-06-25 | 2021-10-01 | 扬州大学 | Soil wind power erosion process simulation experiment device and experiment method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203720A (en) * | 2015-10-29 | 2015-12-30 | 中国地质大学（北京） | Test device and test method for wind, sand and underground water interaction |
| CN106680193A (en) * | 2017-03-08 | 2017-05-17 | 河南大学 | Portable wind erosion simulation method and device used outdoors |
| CN111896214A (en) * | 2020-07-10 | 2020-11-06 | 太原理工大学 | Open-air coal pile dust-rising amount test similar experiment system and measurement method |
| CN113390603A (en) * | 2021-06-17 | 2021-09-14 | 哈尔滨工业大学 | Wind speed measuring device for low-pressure high-speed Mars wind tunnel and precision improving method thereof |
| CN113390603B (en) * | 2021-06-17 | 2022-09-13 | 哈尔滨工业大学 | Wind speed measuring device for low-pressure high-speed Mars wind tunnel and precision improving method thereof |
| CN113465865A (en) * | 2021-06-25 | 2021-10-01 | 扬州大学 | Soil wind power erosion process simulation experiment device and experiment method |
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