CN2463793Y - Sand transition catching device - Google Patents
Sand transition catching device Download PDFInfo
- Publication number
- CN2463793Y CN2463793Y CN 01202733 CN01202733U CN2463793Y CN 2463793 Y CN2463793 Y CN 2463793Y CN 01202733 CN01202733 CN 01202733 CN 01202733 U CN01202733 U CN 01202733U CN 2463793 Y CN2463793 Y CN 2463793Y
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- CN
- China
- Prior art keywords
- sand
- base
- small hole
- grains
- little
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model belongs to an instrument used for observing motion angle distribution of a sand grain at some point in physical space in sand driving wind. The utility model is composed of a small hole cover (1), a sampling disk (2), and a base (3), wherein, the small hole cover (1) is a conical casing, and a conical center is provided with a small hole (4); the bottom part of the sampling disk (2) is uniformly coated with silicone grease (9) and is inserted in the base (3), and the small hole cover (1), the sampling disk (2), and the base (3) are mutually combined into a whole through screw threads between the small hole cover and the base (3). In the field test, a sand grain can jump into the small hole (4) and is glued at the vacuum silicone grease (9) in the sampling disk (2) in a certain time, the sand grain is observed by using a microscope and is taken with photos, the angular distribution at some point and the statistical parameter of the sand grain can be obtained, and the difficult problems in the sand storm physics can be solved.
Description
The utility model belongs to a kind of instrument of the stream grains of sand in the motion angle distribution of physical space point place that be used for observing.
China is a country that desertification is more serious, and national desertification land (sand dune, wind erosion sand ground) has reached 35.8 ten thousand square kilometres, accounts for 3.7% of national land area, and desertification land is still with 246 square kilometres/year speed increment.In order to prevent and treat desertification, improve the dust storm engineering and prevent and treat quality, must the research stream characteristics of motion and and environmental relation thereof.And grains of sand motion track distributes in the stream, and the angle when especially the grains of sand impact the drift sand bed surface distributes and statistical parameter is the difficult problem that blown sand physics need solve always.
The utility model through long-term experimental study, is developed a kind of instrument from this demand.This instrument is made up of little escutcheon, sampling dish and base, smear the vacuum silicone grease on the sampling dish equably, in the open air in the process of the test, this instrument is imbedded husky bed with certain inclination angle, the aperture that grains of sand saltation is gone into aperture cover tap web place in the stream is secured on the vacuum silicone grease in the sampling dish.Take out sampling dish microscopic, photograph can obtain the radial distribution of the grains of sand on the sampling dish, exists one-to-one relationship θ=0.4 π-arctgr/10.4 (r:mm) according to the radial distribution and the angle of shock; R=f
r(n).The grains of sand angle of shock distributes and statistical parameter also can obtain.
The utility model can be realized by following measure
A kind of grains of sand saltation is caught instrument, mainly is made up of little escutcheon, sampling dish and base.Little escutcheon is the housing of taper, and its tapering is 160 °, and there is aperture at the tap web place, and the aperture is 2mm, the thick 0.1mm of peritreme.The pinprick that housing seamed edge place has several to be evenly distributed.Base has screw and pin-and-hole, and pin extends outside the base, and the sampling tray bottom embeds in the base after smearing the vacuum silicone grease equably, by the screw thread between little escutcheon and base, they is become one.
The good effect of advantage of the present utility model and generation is:
1, simple in structure, novel.In wind-tunnel and field test, grains of sand saltation in the stream is gone into the aperture of little escutcheon, and is secured on the sampling dish, by to the distributive observation of grains of sand motion track, just can obtain the grains of sand angle of shock and distribute and statistical parameter, provide complete data for solving a blown sand physics difficult problem.
2, volume is little, field trial is easy to carry.Secondly, different according to the purpose of observation with requirement, also the single instrument of catching can be embedded in husky bed surface with certain inclination angle, also several can be caught the instrument ordering, be screwed on bearing, the angle that also can obtain the different gradient grains of sand distributes and statistical parameter.
Fig. 1, grains of sand saltation is caught the cut-open view of instrument
In conjunction with the accompanying drawings, be described in further detail again with regard to the utility model:
Embodiment 1, and a kind of grains of sand saltation is caught instrument and is made up of aperture cover 1, sampling dish 2, base 3.Aperture cover 1 is the housing of taper, and tapering is 160 °, path length 100mm, there is aperture 4 at the tap web place, and the aperture is 2mm, the thick 0.1mm of peritreme, and the rib end of housing has 18 pinpricks that are evenly distributed 5, base 3 have screw 6 and pin-and-hole 7,7 ', outside pin 8, the 8 ' protuberate basic unit 3.Sampling is coiled 2 bottoms and is smeared vacuum silicone grease 9 back equably and embed in the bases 3, by the screw thread of 3 of aperture cover 1 and bases, they is become one mutually.
Reach in the open air in the wind tunnel test, this instrument is imbedded husky bed surface with an inclination angle (0-90 ° of chassis and bed surface angle), by certain hour, grains of sand saltation is gone into aperture 4 and is secured on the vacuum silicone grease 9 in the sampling dish 2 in the stream.Simultaneously, the air-flow that enters aperture 4 with the grains of sand is discharged from pinprick 5.
Use microscopic, taking a picture then to obtain grains of sand radial distribution on garden shape sampling dish 2, exists relation one to one according to the radial distribution and the angle of shock, and the grains of sand angle of shock distributes and parameter also can obtain.
Embodiment 2, and is different with requirement according to the purpose of observation, also several can be caught instrument and arrange in regular turn, is screwed on bearing.In the test, also can obtain different gradient grains of sand angle and distribute and statistical parameter in the open air.
Claims (2)
1, a kind of grains of sand saltation is caught instrument, mainly is made up of little escutcheon (1), sampling dish (2), base (3), and it is characterized in that: little escutcheon (1) is the housing of taper, and there is aperture (4) at the tap web place, and the housing seamed edge also has several pinpricks that is evenly distributed (5); Have on the base (3) outside screw (6) and pin-and-hole (7,7 '), pin (8, the 8 ') protuberate basic units (3); Sampling dish (2) bottom is smeared vacuum silicone grease (9) back uniformly and is embedded in the base (3), by the screw thread between little escutcheon (1) and base (3), they is become one.
2, catch instrument according to the described grains of sand saltation of claim 1, it is characterized in that: small aperture φ is 2mm, the thick 0.1mm of peritreme, and the tapering of little escutcheon (1) is 160 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01202733 CN2463793Y (en) | 2001-01-02 | 2001-01-02 | Sand transition catching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01202733 CN2463793Y (en) | 2001-01-02 | 2001-01-02 | Sand transition catching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2463793Y true CN2463793Y (en) | 2001-12-05 |
Family
ID=33624448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01202733 Expired - Fee Related CN2463793Y (en) | 2001-01-02 | 2001-01-02 | Sand transition catching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2463793Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542998A (en) * | 2013-11-12 | 2014-01-29 | 北京师范大学 | Sand wind measuring device and sand wind measuring method through sand wind measuring device |
| CN108572125A (en) * | 2018-06-09 | 2018-09-25 | 中国农业科学院草原研究所 | Dust storm region sand particle size and distributed number acquisition statistic device and method |
-
2001
- 2001-01-02 CN CN 01202733 patent/CN2463793Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542998A (en) * | 2013-11-12 | 2014-01-29 | 北京师范大学 | Sand wind measuring device and sand wind measuring method through sand wind measuring device |
| CN103542998B (en) * | 2013-11-12 | 2014-07-16 | 北京师范大学 | Sand wind measuring device and sand wind measuring method through sand wind measuring device |
| CN108572125A (en) * | 2018-06-09 | 2018-09-25 | 中国农业科学院草原研究所 | Dust storm region sand particle size and distributed number acquisition statistic device and method |
| CN108572125B (en) * | 2018-06-09 | 2023-08-22 | 中国农业科学院草原研究所 | Sand grain size and quantity distribution acquisition and statistics device and method for sand blasting area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |