CN106643935A - Laser scattering multi-elevation sediment transport strength synchronization measurement device - Google Patents
Laser scattering multi-elevation sediment transport strength synchronization measurement device Download PDFInfo
- Publication number
- CN106643935A CN106643935A CN201611102856.5A CN201611102856A CN106643935A CN 106643935 A CN106643935 A CN 106643935A CN 201611102856 A CN201611102856 A CN 201611102856A CN 106643935 A CN106643935 A CN 106643935A
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- Prior art keywords
- sand
- guard box
- sand tube
- laser
- collection sand
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/661—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters using light
-
- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a laser scattering multi-elevation sediment transport strength synchronization measurement device comprising multiple sand collecting pipes, a protecting box, a collecting tank which is installed at the bottom of the protecting box and a signal processor; the sand inlets of the sand collecting pipes are arranged at different heights; the lower parts of the sand collecting pipes extend into the protecting box and are connected with the collecting tank; the positions, corresponding to the sand collecting pipes, of the protecting box are provided with a laser, an optical information receiver and a photoelectric converter; the photoelectric converter is connected with the signal processor in a signal mode; the protecting box is provided with a vacuum pump and an exhaust pipe communicated with the outside. The device of the invention adopts the non-contact mode for measurement, which does not interfere sand flow to be measured; sand information of sands of various particle sizes can be captured by scattered light and the measurement precision is high; by means of the device, measurement of time series of sediment transport intensity at different heights within short time can be realized; the measurement results can be used for analyzing the temporal and spatial structure of wind and sand flow, and the law of instantaneous sediment transport intensity changing with heights.
Description
Technical field
The present invention relates to sediment transport measurement apparatus.
Background technology
In the wild dust storm measurement, especially in the observational study of transient state dust storm circulation, acquisition instrument have force cell,
Particles collision sensor (Saltiphone, SENSIT, Safire), optical measuring device (such as LDA, PIV) etc., but these measurements
Device can only measure the sediment discharge intensity of local area at a certain height or can only measure silt discharge on whole section, and cannot
The synchro measure result of the sediment discharge intensity of differing heights is obtained, this causes still to explore so far transient state sediment transport flux along height
Distribution characteristics and its over time.
The content of the invention
The present invention seeks to：The shortcoming of single-point type or section type measurement can only be carried out for existing silt discharge measurement apparatus,
A kind of experimental provision of the sediment discharge intensity of energy synchro measure differing heights is provided.
The technical scheme is that：A kind of many elevation sediment discharge intensity synchronous measuring apparatus of laser light scattering, including many collection
Sand tube, guard box, the feeder and signal processor that are arranged on guard box bottom, the sand inlet of multiple collection sand tubes is arranged at not
With height, and collection sand tube bottom is stretched into guard box and is connected with feeder, and the position of each collection sand tube of correspondence sets respectively in guard box
There are corresponding laser instrument, optical information receiver and optical-electrical converter, optical-electrical converter is connected with signal processor signal, guard box
The blast pipe for being inside provided with vavuum pump and communicating with the external world, during working condition, vavuum pump discharges guard box interior part by blast pipe
Air, makes to form negative pressure in guard box, and the grains of sand of extraneous differing heights are sucked respectively corresponding collection sand tube, are collected in guard box husky
The grains of sand in pipe are met and occur after the laser that laser instrument is launched diffraction and scattering, optical information recipient receive information and Jing opto-electronic conversions
Device passes to the mass concentration information that signal processor is converted into needing.
Preferably, the collection sand tube is divided into from the top down into husky section, inclined tube section, straight length and in guard box
Laser Measuring sand section.The straight length middle part of the collection sand tube is divided into metal hose, metal hose two ends respectively by hold-doun nut with
The straight length of collection sand tube is connected.The collection sand tube has 15, and enters husky section for external diameter 20mm, and the stainless steel of internal diameter 18mm is justified
Pipe.
Preferably, the device also includes fix bar, and the husky section of entering of each collection sand tube is connected respectively with the fix bar.
The principle of laser instrument measurement particle diameter distribution is as follows：The monochromatic light that laser instrument sends, Jing light choppers are plane wave
Directional light, the printing opacity sample cell in the middle of directive light path, the particle of different sizes being dispersed in decentralized medium is met light and different angles occurs
The diffraction of degree, scattering, the light produced after diffraction, scattering invests the optical information receiver (detector) for being arranged in different directions, Jing
The information of diffraction, scattering conversion is passed to microcomputer and is processed by optical-electrical converter, changes into the distributed intelligence of particle.
It is an advantage of the invention that：
1. the present invention adopts heed contacted measure mode, and grains of sand stream to be measured will not be interfered；Scattering luminous energy catches each
The grains of sand information of individual particle diameter, certainty of measurement is high；Differing heights sediment discharge intensity seasonal effect in time series measurement in the short time can be realized, is surveyed
Amount result can be used to analyze the space-time structure of stream, instantaneous sediment discharge intensity with the research such as height change rule.
2. metal hose is set in the straight length for collecting sand tube in the present invention, can effectively anti-locking apparatus deformation and failure.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
Fig. 1 is the side structure schematic diagram of the present invention；
Fig. 2 is the overlooking the structure diagram of the present invention.
Wherein：1 collection sand tube；11 sand inlets；12 enter husky section；13 inclined tube sections；14 straight lengths；15 Laser Measurings sand section；16 metals
Flexible pipe；17 hold-doun nuts
2 guard boxs；
3 feeders；
4 signal processors；
5 laser instruments；
6 optical information receivers；
7 optical-electrical converters；
8 vavuum pumps；
9 blast pipes；
10 fix bars.
Specific embodiment
Embodiment：As depicted in figs. 1 and 2, many elevation sediment discharge intensity synchronous measuring apparatus of a kind of laser light scattering, including many
Collection sand tube 1, guard box 2, the feeder 3 and signal processor 4 that are arranged on the bottom of guard box 2, the sand inlet of multiple collection sand tubes 1
11 are arranged at differing heights, and collection sand tube 1 bottom is stretched into guard box 2 and is connected with feeder 3, and each collection of correspondence is husky in guard box 2
The position of pipe 1 is respectively equipped with corresponding laser instrument 5, optical information receiver 6 and optical-electrical converter 7, at optical-electrical converter 7 and signal
The signal connection of reason device 4, the blast pipe 9 for being provided with vavuum pump 8 and communicating with the external world in guard box 2.
In the present embodiment, the collection sand tube 1 is divided into from the top down into husky section 12, inclined tube section 13, straight length 14 and position
Laser Measuring sand section 15 in guard box 2.The collection sand tube 1 has 15, and enters husky section 12 for external diameter 20mm, and internal diameter 18mm is not
Rust cylindrical steel tube, can measure the sediment discharge intensity of the differing heights in the range of earth's surface 300mm.
In the present embodiment, the middle part of straight length 14 of the collection sand tube 1 is divided into metal hose 16, the two ends of metal hose 16 difference
It is connected with the straight length 14 of collection sand tube 1 by hold-doun nut 17.The setting of metal hose, can effectively the deformation of anti-locking apparatus and
Destruction.
In the present embodiment, the device also includes fix bar 10, each collection sand tube 1 enter husky section 12 respectively with the fix bar 10
Connection.The fix bar can be used to the rotation and movement of limits device.
When the present invention is in running order, vavuum pump 8 discharges the interior part air of guard box 2 by blast pipe 9, makes guard box
Negative pressure is formed in 2, the grains of sand of extraneous differing heights are sucked respectively corresponding collection sand tube 1, the sand in sand tube 1 is collected in guard box 2
There is diffraction and scattering after the laser of the transmitting of grain chance laser instrument 5, simultaneously Jing optical-electrical converters 7 are passed the receive information of optical information recipient 6
To the mass concentration information that signal processor 4 is converted into needing.
The principle of laser instrument measurement particle diameter distribution is as follows：The monochromatic light that laser instrument sends, Jing light choppers are plane wave
Directional light, the printing opacity sample cell in the middle of directive light path, the particle of different sizes being dispersed in decentralized medium is met light and different angles occurs
The diffraction of degree, scattering, the light produced after diffraction, scattering invests the optical information receiver (detector) for being arranged in different directions, Jing
The information of diffraction, scattering conversion is passed to microcomputer and is processed by optical-electrical converter, changes into the distributed intelligence of particle.
The present invention adopts heed contacted measure mode, and grains of sand stream to be measured will not be interfered；Scattering luminous energy catches each
The grains of sand information of particle diameter, certainty of measurement is high；Differing heights sediment discharge intensity seasonal effect in time series measurement in the short time, measurement can be realized
As a result can be used to analyze space-time structure, the instantaneous sediment discharge intensity of stream with the research such as height change rule.
The above is only the concrete application example of the present invention, protection scope of the present invention is not limited in any way.Except above-mentioned
Implement exception, the present invention there can also be other embodiment.The technical scheme that all employing equivalents or equivalent transformation are formed,
Fall within scope of the present invention.
Claims (5)
1. many elevation sediment discharge intensity synchronous measuring apparatus of a kind of laser light scattering, it is characterised in that：Including many collection sand tube (1), protect
Protecting box (2), the feeder (3) and signal processor (4) that are arranged on guard box (2) bottom, the sand inlet of multiple collection sand tube (1)
(11) differing heights are arranged at, and collect sand tube (1) bottom and stretched into guard box (2) and be connected with feeder (3), in guard box (2)
The position of each collection sand tube (1) of correspondence is respectively equipped with corresponding laser instrument (5), optical information receiver (6) and optical-electrical converter (7),
Optical-electrical converter (7) is connected with signal processor (4) signal, the row for being provided with vavuum pump (8) and communicating with the external world in guard box (2)
Tracheae (9), during working condition, vavuum pump (8) discharges guard box (2) interior part air by blast pipe (9), makes guard box (2)
Interior formation negative pressure, the grains of sand of extraneous differing heights are sucked respectively corresponding collection sand tube (1), in guard box (2) in collection sand tube (1)
The grains of sand meet and occur after the laser of laser instrument (5) transmitting diffraction and scattering, optical information recipient (6) receive information and Jing photoelectricity turns
Parallel operation (7) passes to the mass concentration information that signal processor (4) is converted into needing.
2. many elevation sediment discharge intensity synchronous measuring apparatus of a kind of laser light scattering according to claim 1, it is characterised in that：Institute
State collection sand tube (1) to be divided into from the top down into husky section (12), inclined tube section (13), straight length (14) and in the guard box (2)
Laser Measuring sand section (15).
3. many elevation sediment discharge intensity synchronous measuring apparatus of a kind of laser light scattering according to claim 2, it is characterised in that：Institute
Straight length (14) middle part for stating collection sand tube (1) is divided into metal hose (16), and metal hose (16) two ends pass through respectively hold-doun nut
(17) it is connected with the straight length (14) of collection sand tube (1).
4. many elevation sediment discharge intensity synchronous measuring apparatus of a kind of laser light scattering according to claim 2, it is characterised in that：Institute
Stating collection sand tube (1) has 15, and enters husky section (12) for external diameter 20mm, the stainless pipe of internal diameter 18mm.
5. many elevation sediment discharge intensity synchronous measuring apparatus of a kind of laser light scattering according to claim 2, it is characterised in that：Should
Device also includes fix bar (10), and the husky section (12) of entering for respectively collecting sand tube (1) is connected respectively with the fix bar (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611102856.5A CN106643935B (en) | 2016-12-05 | 2016-12-05 | Laser scattering multi-elevation sand transmission intensity synchronous measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611102856.5A CN106643935B (en) | 2016-12-05 | 2016-12-05 | Laser scattering multi-elevation sand transmission intensity synchronous measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106643935A true CN106643935A (en) | 2017-05-10 |
| CN106643935B CN106643935B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611102856.5A Active CN106643935B (en) | 2016-12-05 | 2016-12-05 | Laser scattering multi-elevation sand transmission intensity synchronous measurement device |
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| CN (1) | CN106643935B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0915136A (en) * | 1995-06-29 | 1997-01-17 | Shimadzu Corp | Laser diffraction/scattering type particle size distribution measuring apparatus |
| CN1424572A (en) * | 2003-01-10 | 2003-06-18 | 东南大学 | Laser light scattering dust concentration on line measuring method |
| CN1475790A (en) * | 2002-07-18 | 2004-02-18 | 株式会社岛津制作所 | Method and its device for collecting yellow sand and its measuring method and device |
| CN101520398A (en) * | 2009-04-03 | 2009-09-02 | 国家海洋技术中心 | Laser instrument for measuring sand in water |
| CN102323037A (en) * | 2011-05-19 | 2012-01-18 | 中国科学院寒区旱区环境与工程研究所 | Movable and portable wind erosion tunnel |
| CN102768106A (en) * | 2012-06-29 | 2012-11-07 | 中国科学院新疆生态与地理研究所 | Sand flow sediment transportation monitoring method |
| CN203606102U (en) * | 2013-12-03 | 2014-05-21 | 内蒙古农业大学 | Rotary field soil wind erosion gradient sand collecting instrument |
| CN105258908A (en) * | 2015-11-16 | 2016-01-20 | 中国科学院寒区旱区环境与工程研究所 | Automatic gradient-type wind sand flow acquisition instrument |
| CN206399485U (en) * | 2016-12-05 | 2017-08-11 | 盐城工学院 | A kind of many elevation sediment discharge intensity synchronous measuring apparatus of laser light scattering |
-
2016
- 2016-12-05 CN CN201611102856.5A patent/CN106643935B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0915136A (en) * | 1995-06-29 | 1997-01-17 | Shimadzu Corp | Laser diffraction/scattering type particle size distribution measuring apparatus |
| CN1475790A (en) * | 2002-07-18 | 2004-02-18 | 株式会社岛津制作所 | Method and its device for collecting yellow sand and its measuring method and device |
| CN1424572A (en) * | 2003-01-10 | 2003-06-18 | 东南大学 | Laser light scattering dust concentration on line measuring method |
| CN101520398A (en) * | 2009-04-03 | 2009-09-02 | 国家海洋技术中心 | Laser instrument for measuring sand in water |
| CN102323037A (en) * | 2011-05-19 | 2012-01-18 | 中国科学院寒区旱区环境与工程研究所 | Movable and portable wind erosion tunnel |
| CN102768106A (en) * | 2012-06-29 | 2012-11-07 | 中国科学院新疆生态与地理研究所 | Sand flow sediment transportation monitoring method |
| CN203606102U (en) * | 2013-12-03 | 2014-05-21 | 内蒙古农业大学 | Rotary field soil wind erosion gradient sand collecting instrument |
| CN105258908A (en) * | 2015-11-16 | 2016-01-20 | 中国科学院寒区旱区环境与工程研究所 | Automatic gradient-type wind sand flow acquisition instrument |
| CN206399485U (en) * | 2016-12-05 | 2017-08-11 | 盐城工学院 | A kind of many elevation sediment discharge intensity synchronous measuring apparatus of laser light scattering |
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| Publication number | Publication date |
|---|---|
| CN106643935B (en) | 2023-10-17 |
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