CN103245599A - Dust settlement experiment apparatus - Google Patents
Dust settlement experiment apparatus Download PDFInfo
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- CN103245599A CN103245599A CN2012100267494A CN201210026749A CN103245599A CN 103245599 A CN103245599 A CN 103245599A CN 2012100267494 A CN2012100267494 A CN 2012100267494A CN 201210026749 A CN201210026749 A CN 201210026749A CN 103245599 A CN103245599 A CN 103245599A
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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
Soon, its existence had stopped a large amount of universe and from the high-velocity particles of the sun, tellurian ecologic environment has been played vital protective effect after the magnetic field of the earth resulted from the earth and forms.The magnetic field of the earth can change along with room and time, and the certain law of the earth itself is being contained in these variations, but also may have direct or indirect contacting with climate change, biological activity etc.Simultaneously, the variation in magnetic field of the earth has global consistance at certain yardstick, and before for example the modern recent terrestrial magnetic field of distance south poles reversal events occurred in 780,000 years, current reversal events just can be used as a time reference mark in the earth history research.Sediment (as ocean, lake sediment) is in the process of its formation, magnetic mineral in the precipitum can the direction along the terrestrial magnetic field be arranged according to certain efficient under the effect of terrestrial magnetic field, when sediment be compacted, fixed after, Magnetic Field that can reflect when depositing that these magnetic minerals of arranging along the terrestrial magnetic field direction have been recorded in sediments just is referred to as depositional remanent magnetism.Certainly, some sediment, because granularity is thicker, the space is bigger, reasons such as compaction is not strong cause the magnetic mineral of the inside not fixed completely, and they can be arranged along the direction of later stage terrestrial magnetic field, geomagnetic field information when remanent magnetism so at this moment just can not reflect the sediment deposition is referred to as to deposit back remanent magnetism.For the Changing Pattern of the terrestrial magnetic field of studying over, the research for earth history simultaneously provides the regular hour scale, and the remanent magnetism mechanism of oceanic sediment has obtained many concerns.And as the loess of terrestrial facies wind-borne sediment, although it has been proved to be the information that can record the magnetic field of the earth, but because its sedimentary environment is different with the ocean, the remanent magnetism of oceanic sediment obtains mechanism and then can not directly bring and be applied in the loess, therefore need study the remanent magnetism acquisition mechanism of the loess of wind deposits.Such research is very ripe example not in the past, the related design of this patent can successful Application research in this respect on.
Summary of the invention
At the problem that exists in the correlation technique, the object of the present invention is to provide a kind of dust settling experimental provision, so that the device of the possible physical mechanism in a kind of settling process of studying dust to be provided.
For achieving the above object, the invention provides a kind of dust settling experimental provision, it is characterized in that, comprising: in the simulating nature circle dust kick up, the closed circulation wind-tunnel of drift diffusion and three processes of sedimentation, have for dust kick up therein, the sand and dust storehouse of drift diffusion, sedimentation; In the sand and dust storehouse, produce the magnetic field generation device of intensity and direction variation magnetic field, be located at outside the sand and dust storehouse; The rainfall simulator of simulated rainfall in the sand and dust storehouse has the shower nozzle of rainfall in the sand and dust storehouse; Sample collection device is arranged on the bottom in the sand and dust storehouse; And the environmental parameter that comprises wind speed, temperature, humidity, magnetic field in the sand and dust storehouse monitored and the monitor recording device of real time record, and be electrically connected between the fan that recirculating air is provided in magnetic field generation device, rainfall simulator, the closed circulation wind-tunnel.
Preferably, the circulation wind-tunnel also comprises: be located at outside the sand and dust storehouse and the airduct that is communicated with it and by the dust feed arrangement with dust inlet; Wherein, the fan that recirculating air is provided is two and is located in the airduct that dust inlet is located between two fans and is communicated with airduct.
Preferably, magnetic field generation device comprises three orthogonal Helmholtz coilss, and the dust settling experimental provision also comprises: with coil and two supply units that fan is electrically connected.
Preferably, rainfall simulator also comprises water pump, and water pump is positioned at outside the sand and dust storehouse and by water pipe and is connected with shower nozzle.
Preferably, monitor recording device comprises: according to the magnetic field parameter that detects from the sand and dust storehouse, the control supply unit is supplied with the strength of current of coil and the magnetic control module of direction, and the magnetic control module is electrically connected with supply unit; According to the wind speed parameter that detects from the sand and dust storehouse, the control supply unit is supplied with the fan control module of the strength of current of fan, and fan control module is electrically connected with supply unit; According to the humidity parameter that from the sand and dust storehouse, detects, the water supply module of control water pump output and water supply time, water supply module is electrically connected with water pump; The dust Control module of the dust amount of feeding of control feed arrangement, the dust Control module is electrically connected with the motor that drives feed arrangement dust brush, and wherein the dust brush is carried dust to dust inlet.
Preferably, monitor recording device also comprises: detect the sensor of wind speed parameter, the sensor that detects magnetic field intensity and direction, the sensor that detects humidity, the sensor of detected temperatures, all these sensors all are located in the sand and dust storehouse.
Preferably, the upper space in the sand and dust storehouse is that dust diffusion region, lower space are the 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 of collecting discrete samples, collection bulk sample.
Useful technique effect of the present invention is: the device that the possible physical mechanism in a kind of settling process of studying dust is provided, be particularly advantageous in the remanent magnetism acquisition mechanism of wind-borne sediments such as loess is better studied, also can study the remanent magnetism mechanism of ocean or lake sediment, so that the mutual comparative study between the DIFFERENT DEPOSITIONAL ENVIRONMENTS to be provided, to promoting association area (as archeo magnetism, paleoclimate, paleoenvironment) research has positive effect.
Description of drawings
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 among the present invention;
Fig. 3 is the vertical view of Fig. 2, has omitted the sample box firm banking for simplifying purpose;
Fig. 4 is the synoptic diagram of cylindrical sample box.
Embodiment
Below referring to accompanying drawing the specific embodiment of the present invention is described.
Referring to Fig. 1, dust settling experimental provision of the present invention comprises: circulation wind-tunnel, magnetic field generation device, rainfall simulator, sample collection device, and monitor controller.The circulation wind-tunnel can compare that real simulated occurring in nature dust is kicked up, drift diffusion and three processes of sedimentation, its have for dust kick up therein, the sand and dust storehouse 19 of drift diffusion and sedimentation; And magnetic field generation device is arranged on outside the sand and dust storehouse 19, and the magnetic field that can both change on direction and intensity can be provided in sand and dust storehouse 19; Rainfall simulator can be in sand and dust storehouse 19 process of simple analog natural precipitation, have the shower nozzle 13 of rainfall in the sand and dust storehouse 19; Sample collection device has the several samples collection mode to satisfy the demand of different experiments, is arranged on the bottom in the sand and dust storehouse 19; The Monitoring and Controlling pen recorder can play to the environmental parameter that comprises wind speed, temperature, humidity magnetic field etc. in the sand and dust storehouse 19 monitor, the effect of control, real time record, provide in this monitor controller and magnetic field generation device, rainfall simulator and the closed circulation wind-tunnel between the fan of recirculating air to be electrically connected.
Continuation is referring to Fig. 1, it is two in order to the fan that recirculating air is provided in the circulation wind-tunnel, it is the fan 6 and 7 shown in Fig. 1, the circulation wind-tunnel also comprises airduct 20, dust feed arrangement 8, fan 6,7 namely is arranged in the airduct 20, and the dust sample is mobile in wind-tunnel under preceding two fans 6 in back, 7 pressure-vaccum effect.Wherein, airduct 20 is communicated with outside sand and dust storehouse 19 and with sand and dust storehouse 19, and wind-tunnel 20 integrally closeds, and this makes the intensity of recirculating air power be protected, and can prevent that dust from leaking, and pollutes the laboratory surrounding environment; Dust feed arrangement 8 has storehouse, thing source 25, the dust brush (not shown) of storage dust and drives the motor 9 that the dust brush is transported to dust dust inlet.Dust inlet is communicated with airduct 20 between fan 6 and 7 as can be seen from Figure 1.Also show the support 14 that supports sand and dust storehouse 19 in addition among Fig. 1.
Can find out also that from Fig. 1 the dust settling experimental provision also comprises supply unit 11.As a kind of embodiment, magnetic field generation device comprises three orthogonal Helmholtz coilss 4.Supply unit 11 and this coil 4 and two fans 6,7 are electrically connected with to its power supply.
Shown in Fig. 1, the rainfall simulator among the present invention also comprises water pump 10, and water pump 10 is positioned at outside the sand and dust storehouse 19, also is connected with shower nozzle 13 by water pipe 23.Upper space in the sand and dust storehouse 19 is that dust diffusion region 1, lower space are dust settling district 2.1 owing to have the aerodynamic force of turbulent flow in the dust diffusion region, makes the sample dust to access and spread drift more fully, with the aerial state of simulation dust.Variation has all taken place with diffusion region 1 in negative area 2 on size and dimension, make negative area 2 have the aerodynamic force environment of relatively placidity, so the sample dust can be able to sedimentation.Obviously, sample collection device is arranged on the bottom in the dust settling district 2.Sample collection device can comprise: tank 3 as shown in Figure 1 (water simulation ocean being arranged, lake and palustrine, anhydrous simulation dry environment), and the anhydrous state that has in the tank 3 can be simulated the two kind situations of dust settling in doing ground and water; The sample box array 17 of collection discrete samples as shown in Figures 2 and 3 can once be collected with the parallel sample under the condition some; And the cylindrical sample box 18 of collection bulk sample as shown in Figure 3.Further, tank 3 only is used for simulating water environment, and water-less environment does not need to use, so tank 3 is transportable devices, with sample box array 17 no direct relations.
Can find out that from Fig. 2 and Fig. 3 with 4 row, 4 row mode arrays, array is on sample box firm banking 23 by 16 sample boxs 22 for sample box array 17.Sample box firm banking 23 is placed on 19 inside, sand and dust storehouse.
Monitor recording device comprises among the present invention: according to the magnetic field parameter that detects from sand and dust storehouse 19, control supply unit 11 is supplied with the strength of current of coil 4 and the magnetic control module of direction, and the magnetic control module is electrically connected with supply unit 11; According to the wind speed parameter that detects from sand and dust storehouse 19, control supply unit 11 is supplied with the fan control module of described fan 6,7 strength of current (realizing the control of fan start and stop, air quantity of fan), and fan control module is electrically connected with supply unit 11; According to the humidity parameter that from sand and dust storehouse 19, detects, the water supply module of control water pump 10 outputs and water supply time (realizing supplying water at regular time and quantity), water supply module is electrically connected with water pump 10; The dust Control module of the dust amount of feeding of control feed arrangement 8, the dust Control module is electrically connected with the motor 8 that drives the dust brush, supplies dust with the control feed arrangement at regular time and quantity in airduct 20, namely controls parameters such as dust quantity delivered, feed speed.For example, as a kind of optimal way, magnetic control module controls supply unit 11 makes coil 4 produce the magnetic field of any direction in sand and dust storehouse 20, this magnetic field be intensity between the fixed magnetic field of 0-100 μ T scope, and the variation magnetic field within this scope.Supply unit 11 can pass through monitor recording device (computing machine) 12 programmings control automatically.In addition except above-mentioned by means of water supply module control output, also can the employing mode control water spray at regular time and quantity.Monitor recording device can also be realized comprising that experimental state parameters such as above-mentioned environmental parameter and the dust amount of feeding, speed of feed carry out real time record.
Obviously be appreciated that, in order to transmit relevant parameter with the action of the above-mentioned module of monitor recording device, monitor recording device also should comprise: detect the sensor of wind speed parameter, the sensor 16 that detects magnetic field intensity and direction, the sensor that detects humidity, the sensor 15 of detected temperatures, all these sensors all are located in the sand and dust storehouse 19.
When using this device, the contrived experiment step is determined the experimental situation parameter at first according to demand, and as magnetic field, temperature has anhydrously, has or not the requirement of rainfall simulation and sampling.Sample collection device is put into dust sample negative area, confirm the closure of total system, set needed environmental parameter by monitor recording device then, ready dust sample can be put into the storehouse, thing source of sampling device with that, the dust sample under the drive of the sample introduction brush that motor drives, the wind-tunnel that advances to circulate of input at regular time and quantity.The dust sample is moved to the diffusion region under the drive of recirculating air, can slow sedimentation enter sample collection device in the negative area at the effect dust sample of gravity and magnetic force.After treating that experiment is finished, follow-up researching and analysing carried out in the sample taking-up.
To sum up, the invention provides the device of the possible physical mechanism in a kind of settling process of studying dust, be particularly advantageous in the remanent magnetism acquisition mechanism of wind-borne sediments such as loess is better studied, to promoting association area (as archeo magnetism, paleoclimate, paleoenvironment) research has positive effect.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a dust settling experimental provision is characterized in that, comprising:
In the simulating nature circle dust kick up, the closed circulation wind-tunnel of drift diffusion and three processes of sedimentation, have for dust kick up therein, the sand and dust storehouse (19) of drift diffusion, sedimentation;
In described sand and dust storehouse (19), produce the magnetic field generation device of intensity and direction variation magnetic field, be located at outside the described sand and dust storehouse (19);
The rainfall simulator of simulated rainfall in described sand and dust storehouse (19) has the shower nozzle (13) of rainfall in the described sand and dust storehouse;
Sample collection device is arranged on the bottom in the described sand and dust storehouse (19); And
The environmental parameter that comprises wind speed, temperature, humidity, magnetic field in the described sand and dust storehouse (19) is monitored and the monitor recording device of real time record, and be electrically connected between the fan (6,7) that recirculating air is provided in described magnetic field generation device, rainfall simulator, the closed circulation wind-tunnel.
2. dust settling experimental provision according to claim 1 is characterized in that,
Described circulation wind-tunnel also comprises: be located at outside the described sand and dust storehouse (19) and the airduct (20) that is communicated with it and by the dust feed arrangement (8) with dust inlet;
Wherein, the described fan (6,7) of recirculating air that provides is two and is located in the described airduct (20) that described dust inlet is communicated with described airduct (20) between described two fans (6,7).
3. dust settling experimental provision according to claim 2 is characterized in that,
Described magnetic field generation device comprises three orthogonal Helmholtz coilss (4), and described dust settling experimental provision also comprises: the supply unit (11) that is electrically connected with described coil (4) and described two fans (6,7).
4. dust settling experimental provision according to claim 3 is characterized in that,
Described rainfall simulator also comprises water pump (10), and described water pump (10) is positioned at outside the described sand and dust storehouse (19), also is connected with described shower nozzle (13) by water pipe (23).
5. dust settling experimental provision according to claim 4 is characterized in that, described monitor recording device comprises:
According to the magnetic field parameter that from sand and dust storehouse (19), detects, to control described supply unit (11) and supply with the strength of current of described coil (4) and the magnetic control module of direction, described magnetic control module is electrically connected with described supply unit (11);
According to the wind speed parameter that from sand and dust storehouse (19), detects, control the fan control module that described supply unit (11) is supplied with the strength of current of described fan (6,7), described fan control module is electrically connected with described supply unit (11);
According to the humidity parameter that from sand and dust storehouse (19), detects, 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 the motor (8) that drives described feed arrangement (8) dust brush, and wherein said dust brush is carried dust to described dust inlet.
6. dust settling experimental provision according to claim 5 is characterized in that,
Described monitor recording device also comprises: detect the sensor (15) of the sensor of described wind speed parameter, the sensor (16) that detects described magnetic field intensity and direction, the sensor that detects described humidity, the described temperature of detection, all these sensors all are located in the described sand and dust storehouse (19).
7. dust settling experimental provision according to claim 1 is characterized in that,
Upper space in the described sand and dust storehouse (19) is that dust diffusion region (1), lower space are dust settling district (2), and described sample collection device is arranged on the bottom in described dust settling district (2).
8. according to each described dust settling experimental provision among the claim 1-7, it is characterized in that,
Described sample collection device comprises: the cylindrical sample box (18) of tank (3), the sample box array (17) of 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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| CN201210026749.4A CN103245599B (en) | 2012-02-07 | 2012-02-07 | Dust settlement experiment apparatus |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543242A (en) * | 2013-11-05 | 2014-01-29 | 中海油能源发展股份有限公司惠州石化分公司 | Device for testing and evaluating dust suppression rate of dust suppressant |
| CN104390898A (en) * | 2014-11-12 | 2015-03-04 | 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 |
| CN110501265A (en) * | 2019-09-25 | 2019-11-26 | 中国科学院大气物理研究所 | Wet removing coefficient measurement method and system under a kind of Atmospheric particulates 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 |
| CN112067234A (en) * | 2020-09-11 | 2020-12-11 | 北京理工大学 | Radiator performance wind tunnel test device capable of simulating multiphase flow air inlet environment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543242A (en) * | 2013-11-05 | 2014-01-29 | 中海油能源发展股份有限公司惠州石化分公司 | Device for testing and evaluating dust suppression rate of dust suppressant |
| CN104390898A (en) * | 2014-11-12 | 2015-03-04 | 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 |
| CN110501265A (en) * | 2019-09-25 | 2019-11-26 | 中国科学院大气物理研究所 | Wet removing coefficient measurement method and system under a kind of Atmospheric particulates cloud |
| 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 |
| CN112067234A (en) * | 2020-09-11 | 2020-12-11 | 北京理工大学 | Radiator performance wind tunnel test device capable of simulating multiphase flow air inlet 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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