CN103245599B - Dust settlement experiment apparatus - Google Patents
Dust settlement experiment apparatus Download PDFInfo
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- CN103245599B CN103245599B CN201210026749.4A CN201210026749A CN103245599B CN 103245599 B CN103245599 B CN 103245599B CN 201210026749 A CN201210026749 A CN 201210026749A CN 103245599 B CN103245599 B CN 103245599B
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Abstract
The invention provides a dust settlement experiment apparatus, comprising: an enclosed circulation wind tunnel for simulating dust evolution, drifting diffusion and settlement three processes, wherein the enclosed circulation wind tunnel comprises a dust cabin (19) in which dust rises, drifts, diffuses and settles; a magnetic field generation device for generating intensity and direction changing magnetic field in the dust cabin (19), wherein the magnetic field generation device is arranged out of the dust cabin (19); a rainfall simulation device for simulating rainfall in the dust cabin (19), wherein the rainfall simulation device comprises spray nozzle for raining to the dust cabin (13); a sample collecting device which is arranged on the bottom of the dust cabin (19); a monitoring and recording device for monitoring and real-time recording environmental parameters comprising wind speed, temperature, humidity and magnetic field in the dust cabin (19), wherein the monitoring and recording device is electrically connected with the magnetic field generation device, the rainfall simulation device, and fans (6, 7) for providing circulation wind in the enclosed circulation wind tunnel. The invention provides a device for researching possible physical mechanism in a dust settlement process.
Description
Technical field
The present invention relates to a kind of dust settling experimental provision.
Background technology
Magnetic field of the earth result from the earth formed after soon, its existence blocks a large amount of universe and the high-velocity particles from the sun, serves vital protective effect to tellurian ecological environment.Magnetic field of the earth can change along with room and time, and the certain law of the earth itself is contained in these changes, but also may have direct or indirect contacting with climate change, biological activity etc.Meanwhile, the change in magnetic field of the earth has global uniformity on certain yardstick, and such as, before occurring in 780,000 years apart from modern recent earth's magnetic field south poles reversal events, current reversal events just can as the time controling point of in earth history research.Deposit (as ocean, lake sediment) is in its process formed, magnetic mineral in precipitum can arrange according to certain efficiency along the direction in earth's magnetic field under the effect in earth's magnetic field, when deposit is compacted, after consolidation, these magnetic minerals along the arrangement of direction, earth's magnetic field are Magnetic Field when can reflect deposition for recorded in sediments just, is referred to as depositional remanent magnetization.Certainly, some deposit, because granularity is thicker, space is larger, the reasons such as compaction is not strong, cause the magnetic mineral of the inside not fixed completely, and they can arrange along the direction in later stage earth's magnetic field, so at this moment, remanent magnetism just can not reflect geomagnetic field information during deposits, is referred to as Post-depositional remanent magnetization.In order to the Changing Pattern in the earth's magnetic field of studying over, simultaneously for the research of earth history provides regular hour scale, the remanent magnetism mechanism of marine sediment obtains many concerns.And as the loess of terrestrial facies aeolian deposit, although it has been proved to be the information that can record magnetic field of the earth, but because its depositional environment is different from ocean, the remanent magnetism acquisition mechanism of marine sediment then directly can not be brought and be applied in loess, therefore needs to obtain mechanism to the remanent magnetism of the loess of aeolian deposit and studies.The example that such research is very unripe in the past, the design involved by this patent can in successful Application research in this respect.
Summary of the invention
For Problems existing in correlation technique, the object of the present invention is to provide a kind of dust settling experimental provision, to provide a kind of device of the possible physical mechanism studied in the infall process of dust.
For achieving the above object, the invention provides a kind of dust settling experimental provision, it is characterized in that, comprising: in simulating nature circle dust kick up, the closed circulation wind-tunnel of drift diffusion and sedimentation three processes, have kick up wherein for dust, drift diffusion, sedimentation sand and dust storehouse; In sand and dust storehouse, produce the magnetic field generation device of intensity and variation magnetic field, direction, be located at outside sand and dust storehouse; The rainfall simulator of simulated rainfall in sand and dust storehouse, has the shower nozzle of rainfall in sand and dust storehouse; Sample collection device, is arranged on the bottom in sand and dust storehouse; And wind speed is comprised to sand and dust storehouse, temperature, humidity, magnetic field monitors and the monitor recording device of real time record in interior ambient parameter, be electrically connected with providing between the fan of circulated air in magnetic field generation device, rainfall simulator, closed circulation wind-tunnel.
Preferably, circulation wind-tunnel also comprises: to be located at outside sand and dust storehouse and the airduct be communicated with it and by the dust feed arrangement with dust inlet; Wherein, provide the fan of circulated air to be two and be located in airduct, dust inlet is located between two fans and is communicated with airduct.
Preferably, magnetic field generation device comprises the orthogonal Helmholtz coil of three axles, and dust settling experimental provision also comprises: the supply unit be electrically connected with coil and two fans.
Preferably, rainfall simulator also comprises water pump, and water pump to be positioned at outside sand and dust storehouse and to be connected with shower nozzle by water pipe.
Preferably, monitor recording device comprises: according to the magnetic field parameter detected from sand and dust storehouse, and control the supply unit supply current strength of coil and the magnetic control module in direction, magnetic control module is electrically connected with supply unit; According to the wind speed parameter detected from sand and dust storehouse, control the fan control module of the current strength of supply unit supply fan, fan control module is electrically connected with supply unit; According to the humidity parameter detected from sand and dust storehouse, control the water supply module of water pump output and water supply time, water supply module is electrically connected with water pump; Control the dust Control module of the dust amount of feeding of feed arrangement, dust Control module is electrically connected with driving the motor of feed arrangement dust brush, and wherein dust brush carries dust to dust inlet.
Preferably, monitor recording device also comprises: detect the sensor of wind speed parameter, detect the sensor in magnetic field intensity and direction, detect the sensor of humidity, the sensor of detected temperatures, all these sensors are all located in sand and dust storehouse.
Preferably, the upper space in sand and dust storehouse is dust recycling district, lower space is dust settling district, and sample collection device is arranged on the bottom in dust settling district.
Preferably, sample collection device comprises: the cylindrical sample box of tank, the sample box array collecting discrete samples, collection bulk sample.
Advantageous Effects of the present invention is: the device providing a kind of possible physical mechanism studied in the infall process of dust, be particularly advantageous in obtaining mechanism to the remanent magnetism of the aeolian deposits such as loess better to study, also can study the remanent magnetism mechanism of ocean or lake sediment, to provide the mutual comparative study between DIFFERENT DEPOSITIONAL ENVIRONMENTS, to promotion association area (as paleomagnetism, geologic climate, palaeoenvironment) research there is positive effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of dust settling experimental provision of the present invention;
Fig. 2 is the vertical frontal view of sample box array in the present invention;
Fig. 3 is the top view of Fig. 2, eliminates sample box firm banking for simplifying object;
Fig. 4 is the schematic diagram of cylindrical sample box.
Detailed description of the invention
See accompanying drawing, the specific embodiment of the present invention is described below.
See Fig. 1, dust settling experimental provision of the present invention, comprising: circulation wind-tunnel, magnetic field generation device, rainfall simulator, sample collection device, and monitor controller.Circulation wind-tunnel can in more real simulating nature circle dust kick up, drift diffusion and sedimentation three processes, its have kick up wherein for dust, the sand and dust storehouse 19 of drift diffusion and sedimentation; And magnetic field generation device is arranged on outside sand and dust storehouse 19, the magnetic field that can change on direction and intensity can be provided in sand and dust storehouse 19; Rainfall simulator can in sand and dust storehouse 19 process of simple analog natural precipitation, there is the shower nozzle 13 of rainfall in sand and dust storehouse 19; Sample collection device has several samples collection mode to meet the demand of different experiments, is arranged on the bottom in sand and dust storehouse 19; Monitoring and Controlling tape deck can play that the ambient parameter comprising wind speed, temperature, humidity magnetic field etc. to sand and dust storehouse 19 is monitored, controlled, the effect of real time record, and this monitor controller is electrically connected with providing between the fan of circulated air in magnetic field generation device, rainfall simulator and closed circulation wind-tunnel.
Continue see Fig. 1, in order to provide the fan of circulated air to be two in circulation wind-tunnel, namely the fan 6 and 7 shown in Fig. 1, circulation wind-tunnel also comprises airduct 20, dust feed arrangement 8, namely fan 6,7 is arranged in airduct 20, and powder sample moves under the pressure-vaccum effect of rear the first two fan 6,7 in wind-tunnel.Wherein, airduct 20 is outside sand and dust storehouse 19 and be communicated with sand and dust storehouse 19, and wind-tunnel 20 integrally closed, this makes the intensity of circulated air power be protected, and can prevent dust from leaking, and pollutes laboratory surrounding environment; Dust feed arrangement 8 has storehouse, thing source 25, the dust brush (not shown) of storage dust and drives dust brush dust to be transported to the motor 9 of dust inlet.Dust inlet is communicated with airduct 20 between fan 6 and 7 as can be seen from Figure 1.The support 14 supporting sand and dust storehouse 19 is also show in addition in Fig. 1.
Also can find out from Fig. 1, dust settling experimental provision also comprises supply unit 11.As a kind of embodiment, magnetic field generation device comprises the orthogonal Helmholtz coil 4 of three axles.Supply unit 11 is electrically connected to power to it with this coil 4 and two fans 6,7.
Shown in Fig. 1, the rainfall simulator in the present invention also comprises water pump 10, and water pump 10 to be positioned at outside sand and dust storehouse 19 and to be connected with shower nozzle 13 by water pipe 23.Upper space in sand and dust storehouse 19 is dust recycling district 1, lower space is dust settling district 2.In dust recycling district 1 owing to having the air force of turbulent flow, make sample dust can obtain spreading drift more fully, with the aerial state of simulating dust.Decanting zone 2 and diffusion region 1 all there occurs change on size and dimension, and make decanting zone 2 have the aerodynamic environment of relatively placidity, therefore sample dust can be able to sedimentation.Obviously, sample collection device is arranged on the bottom in dust settling district 2.Sample collection device can comprise: tank 3 (having Fluid Dynamics ocean, lake and palustrine, without Fluid Dynamics dry environment) as shown in Figure 1, in tank 3 have anhydrous state can simulating dust be deposited in dryly with kind of the situation of two in water; The sample box array 17 of collection discrete samples as shown in Figures 2 and 3, the parallel sample can once collected under same condition is some; And the cylindrical sample box 18 of collection bulk sample as shown in Figure 3.Further, tank 3 is only used to simulate water environment, and water-less environment does not need to use, and therefore tank 3 is transportable devices, with sample box array 17 without direct relation.
Can find out from Fig. 2 and Fig. 3, sample box array 17 is by 16 sample boxs 22 with 4 row 4 row mode arrays, and array is on sample box firm banking 23.Sample box firm banking 23 is placed on inside, sand and dust storehouse 19.
In the present invention, monitor recording device comprises: according to the magnetic field parameter detected from sand and dust storehouse 19, and control supply unit 11 and supply the current strength of coil 4 and the magnetic control module in direction, magnetic control module is electrically connected with supply unit 11; According to the wind speed parameter detected from sand and dust storehouse 19, control the fan control module that supply unit 11 supplies the current strength (realizing the control of fan start and stop, air quantity of fan) of described fan 6,7, fan control module is electrically connected with supply unit 11; According to the humidity parameter detected from sand and dust storehouse 19, control the water supply module of water pump 10 output and water supply time (realizing supplying water at regular time and quantity), water supply module is electrically connected with water pump 10; Control the dust Control module of the dust amount of feeding of feed arrangement 8, dust Control module is electrically connected with driving the motor 8 of dust brush, supplies dust to control feed arrangement at regular time and quantity in airduct 20, namely controls the parameters such as dust quantity delivered, feed speed.Such as, as a kind of preferred embodiment, magnetic control module controls supply unit 11 and makes coil 4 in sand and dust storehouse 20, produce the magnetic field of any direction, and this magnetic field is the fixed magnetic field of intensity between 0-100 μ T scope, and the variation magnetic field within this scope.Supply unit 11 can pass through monitor recording device (computer) 12 programming and automatically control.Control output except above-mentioned by means of water supply module in addition, also can adopt the water spray that mode controls at regular time and quantity.Monitor recording device can also realize carrying out real time record to comprising the experimental state parameter such as above-mentioned ambient parameter and the dust amount of feeding, feed speed.
Obviously be appreciated that, in order to relevant parameter is transmitted in the action of the above-mentioned module with monitor recording device, monitor recording device also should comprise: detect the sensor of wind speed parameter, detect the sensor 16 in magnetic field intensity and direction, detect the sensor of humidity, the sensor 15 of detected temperatures, all these sensors are all located in sand and dust storehouse 19.
When using this device, first will contrived experiment step according to demand, determine experimental situation parameter, as magnetic field, temperature, has anhydrous, with or without the requirement of rainfall simulation and sampling.Sample collection device is put into powder sample decanting zone, confirm the closure of whole system, then required ambient parameter is set by monitor recording device, ready powder sample can be put into the storehouse, thing source of sampling device with that, under the drive of the sample introduction brush that powder sample drives at motor, input is at regular time and quantity entered to circulate wind-tunnel.Powder sample is moved to diffusion region under the drive of circulated air, slow sedimentation can enter sample collection device at the effect powder sample of gravity and magnetic force in decanting zone.After experiment completes, sample is taken out and carries out follow-up researching and analysing.
To sum up, the invention provides a kind of device of the possible physical mechanism studied in the infall process of dust, be particularly advantageous in obtaining mechanism to the remanent magnetism of the aeolian deposits such as loess better to study, to promotion association area (as paleomagnetism, geologic climate, palaeoenvironment) research there is positive effect.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a dust settling experimental provision, is characterized in that, comprising:
In simulating nature circle dust kick up, the closed circulation wind-tunnel of drift diffusion and sedimentation three processes, have kick up wherein for dust, drift diffusion, sedimentation sand and dust storehouse (19);
The magnetic field generation device of intensity and variation magnetic field, direction is produced in described sand and dust storehouse (19), be located at outside described sand and dust storehouse (19), described magnetic field generation device comprises the orthogonal Helmholtz coil of three axle (4), described Helmholtz coil (4) produces the magnetic field of any direction in described sand and dust storehouse (19), described magnetic field is the fixed magnetic field of intensity between 0-100 μ T scope, and the variation magnetic field within this scope;
In described sand and dust storehouse (19), the rainfall simulator of simulated rainfall, has the shower nozzle (13) of rainfall in described sand and dust storehouse;
Sample collection device, is arranged on the bottom in described sand and dust storehouse (19); And
Wind speed is comprised to described sand and dust storehouse (19), temperature, humidity, magnetic field monitors and the monitor recording device of real time record in interior ambient parameter, be electrically connected with providing in described magnetic field generation device, rainfall simulator, closed circulation wind-tunnel between the fan of circulated air (6,7);
Described circulation wind-tunnel also comprises: to be located at outside described sand and dust storehouse (19) and the airduct (20) be communicated with it and by the dust feed arrangement (8) with dust inlet;
Wherein, described provides the fan of circulated air (6,7) to be two and is located in described airduct (20), and described dust inlet is communicated with described airduct (20) between described two fans (6,7).
2. dust settling experimental provision according to claim 1, is characterized in that,
Described dust settling experimental provision also comprises: the supply unit (11) be electrically connected with described coil (4) and described two fans (6,7).
3. dust settling experimental provision according to claim 2, is characterized in that,
Described rainfall simulator also comprises water pump (10), and described water pump (10) to be positioned at outside described sand and dust storehouse (19) and to be connected with described shower nozzle (13) by water pipe (23).
4. dust settling experimental provision according to claim 3, is characterized in that, described monitor recording device comprises:
According to the magnetic field parameter detected from sand and dust storehouse (19), control described supply unit (11) and supply the current strength of described coil (4) and the magnetic control module in direction, described magnetic control module is electrically connected with described supply unit (11);
According to the wind speed parameter detected from sand and dust storehouse (19), control the fan control module that described supply unit (11) supplies the current strength of described fan (6,7), described fan control module is electrically connected with described supply unit (11);
According to the humidity parameter detected from sand and dust storehouse (19), control the water supply module of described water pump (10) output and water supply time, described water supply module is electrically connected with described water pump (10); And
Control the dust Control module of the dust amount of feeding of described feed arrangement (8), described dust Control module is electrically connected with driving the motor (8) of described feed arrangement (8) dust brush, and wherein said dust brush is to described dust inlet conveying dust.
5. dust settling experimental provision according to claim 4, is characterized in that,
Described monitor recording device also comprises: the sensor (15) detecting the sensor of described wind speed parameter, detect the sensor (16) in described magnetic field intensity and direction, detect the sensor of described humidity, detect described temperature, and all these sensors are all located in described sand and dust storehouse (19).
6. dust settling experimental provision according to claim 1, is characterized in that,
Upper space in described sand and dust storehouse (19) is dust recycling district (1), lower space is dust settling district (2), and described sample collection device is arranged on the bottom of described dust settling district (2).
7. the dust settling experimental provision according to any one of claim 1-6, is characterized in that,
Described sample collection device comprises: the cylindrical sample box (18) of tank (3), the sample box array (17) collecting discrete samples, collection bulk sample.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210026749.4A CN103245599B (en) | 2012-02-07 | 2012-02-07 | Dust settlement experiment apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210026749.4A CN103245599B (en) | 2012-02-07 | 2012-02-07 | Dust settlement experiment apparatus |
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| CN103245599A CN103245599A (en) | 2013-08-14 |
| CN103245599B true CN103245599B (en) | 2015-04-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103543242B (en) * | 2013-11-05 | 2016-04-06 | 中海油能源发展股份有限公司惠州石化分公司 | A kind of dust suppressant dust suppression rate test evaluation device |
| CN104390898B (en) * | 2014-11-12 | 2017-03-22 | 山东科技大学 | Simulation experiment device for spraying and dust-settling law under airflow field and experimental method of simulation experiment device |
| CN110018088A (en) * | 2019-03-05 | 2019-07-16 | 中国矿业大学 | A kind of opencut dust dirt environment simulation test system and method |
| CN110501265B (en) * | 2019-09-25 | 2020-05-01 | 中国科学院大气物理研究所 | Method and system for measuring wet clearance coefficient of atmospheric particulate matter under cloud |
| CN111318193A (en) * | 2020-03-15 | 2020-06-23 | 上海市计量测试技术研究院 | Dust generating device of constant-temperature and constant-humidity dust environment simulation device |
| CN111982796A (en) * | 2020-09-01 | 2020-11-24 | 内蒙古农业大学 | Experimental device for simulating raindrop splashing in all-dimensional windy environment |
| CN112067234B (en) * | 2020-09-11 | 2022-02-01 | 北京理工大学 | Radiator performance wind tunnel test device capable of simulating multiphase flow air inlet environment |
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