CN107063772B - Continuous sampling and storing system and method for runoff and sediment in indoor soil tank test - Google Patents
Continuous sampling and storing system and method for runoff and sediment in indoor soil tank test Download PDFInfo
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- CN107063772B CN107063772B CN201710467251.4A CN201710467251A CN107063772B CN 107063772 B CN107063772 B CN 107063772B CN 201710467251 A CN201710467251 A CN 201710467251A CN 107063772 B CN107063772 B CN 107063772B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00722—Communications; Identification
- G01N35/00732—Identification of carriers, materials or components in automatic analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The invention relates to a continuous sampling and storing system and method for runoff sediment in an indoor soil box test, which comprises the following steps: the system comprises a sampling subsystem, a sample storage subsystem, a control subsystem, a power supply subsystem and a cleaning subsystem; the sampling subsystem includes: a plurality of sampling buckets that encircle around the annular sampling track that rotates intermittently according to the water intaking condition, the sampling bucket is connected with annular sampling track through automatic release mechanism. And take notes the number of times of taking a sample, draw the sampling bucket according to setting for the interval or random selection simultaneously and store to research later, whole process realizes the automatic sampling and the automatic sampling of complete unmanned, and through the measurement to the number of times of taking a sample can be accurate calculate soil box runoff sediment volume, realize the full automation sample and the storage sample to the sediment process of runoff in the soil box, the personnel's work load that has significantly reduced has practiced thrift manpower and experimental cost.
Description
Technical Field
The invention relates to a system and a method for continuously sampling and storing runoff and sediment in an indoor soil box test, in particular to a system and a method for hydrological experiments, and particularly relates to a system and a method for automatically metering water and sediment on a soil slope.
Background
The observation experiment of the water and soil loss process is an important experiment means for acquiring parameters in research and design work of developing water and soil conservation research, water and soil loss treatment, water and soil loss prevention and control of production and construction projects and the like. The experiment is usually carried out by arranging an inclined soil tank in an artificial rainfall area, filling soil in the soil tank, wherein the soil comes from an area to be researched, and arranging a water outlet at the middle part of the downstream of the soil tank. The runoff sediment process monitoring mainly adopts an equivalent shunt principle to carry out monitoring based on a secondary rainfall process. The sampling bucket is laid at the delivery port position in soil box promptly, through artifical interval certain time water sample and record sampling time, calculates water yield and runoff silt process. This kind of tradition sampling mode takes artifical sample, and this needs a large amount of manual works and repeated action, and great error can appear in experiment operation, timing etc. nevertheless in the reality, the artifical bucket that trades often can not very accurate assurance accuracy of water receiving. Although a plurality of water samples can be taken simultaneously and then averaged to reduce the error of the experiment in a manner of simultaneously performing experiments in a plurality of soil tanks, the cost of the experiment is increased by doing so. How to improve the precision of experiment to liberating the scientific research personnel from the work of numerous and complicated samples, improving work efficiency is the problem that needs to solve.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a continuous sampling and storing system and method for runoff sediment in an indoor soil box test. The system and the method realize sampling and metering without human interference through automatic sampling and storage, improve the measurement precision and save the manpower.
The purpose of the invention is realized as follows: the utility model provides an experimental runoff silt continuous sampling system of indoor soil box, includes: the system comprises a sampling subsystem, a sample storage subsystem, a control subsystem and a cleaning subsystem; the sampling subsystem comprises: a plurality of sampling buckets which surround the annular sampling crawler belt which rotates intermittently according to the water taking condition, wherein the sampling buckets are connected with the annular sampling crawler belt through an automatic unlocking mechanism; the sampling subsystem is also provided with a sampling port connected with a runoff water outlet pipeline of the soil tank, the sampling port is aligned with the upper opening of a sampling barrel and is provided with a primary water level gauge, the primary water level gauge is electrically connected with the control subsystem, the control subsystem is connected with a motor driving the annular sampling crawler belt to run, and the control subsystem is internally provided with a timer for calculating the sampling time of the sampling barrel and a time counter for counting the rainfall sampling times; the sample storage subsystem is a sample storage area provided with a snake-shaped track, the starting point of the snake-shaped track is arranged on the stop position of a sampling barrel, and the starting point of the snake-shaped track is provided with an annular storage crawler belt.
Furthermore, the sampling barrel is characterized in that the upper part of the sampling barrel is an inverted round table, the lower part of the sampling barrel is cylindrical, the bottom of the sampling barrel is provided with a valve, and the cylindrical part is provided with at least two clamping rings.
Furthermore, the circular table part of the sampling barrel is provided with a concave arc clamping groove matched with the rail.
Further, the cleaning subsystem comprises: an openable and closable shaking ring and an automatic flusher provided on a stop position of a sampling bucket.
Further, the automatic cleaning device comprises: and the flushing pump pipe is connected with a water supply pipeline, and the flushing pump is connected with a spray head capable of automatically stretching.
A method for continuously sampling and storing runoff sediment in an indoor soil tank test by using the system comprises the following steps:
starting the automatic control subsystem: when the artificial rainfall is started, the automatic control subsystem is started at the same time;
sampling: when the soil tank generates runoff, the runoff flows into a first sampling barrel through a sampling port, a primary water level meter measures the water level in the sampling barrel at a frequency of at least 50 times/second, a control subsystem starts to record the timing of the runoff generating time of a water outlet, when the water level in the sampling barrel reaches a set value, the control subsystem stops timing and drives an annular sampling crawler to rotate, so that the next sampling barrel enters the lower part of the sampling port and enters the next round of sampling, and the steps are repeated in such a circulating way, and the control subsystem continuously records the sampling times and the runoff generating time of the water outlet of the sampling barrel and is used as a basis for measuring the runoff and the sand content;
selecting a stored water sample: according to observation requirements, sampling buckets are randomly extracted at set intervals or sent to a memory for storage;
and (3) cleaning: the method comprises the following steps that a sampling barrel which is not selected for storage enters a cleaning area along an annular sampling crawler, a valve at the bottom of the sampling barrel is opened, water and silt in the sampling barrel are discharged, a vibrating ring can be opened and closed to clamp the sampling barrel and vibrate, a flushing pump is started, a nozzle extends out to clean the sampling barrel, the sampling barrel continues to move forward along the annular sampling crawler after being cleaned, and next sampling is prepared;
and (3) finishing the experiment: after the artificial rainfall is closed, the control subsystem receives a signal of rainfall stopping, the control subsystem stops running in due time according to the runoff condition and enters a standby state, if the experiment is continued, the control subsystem enters a working state again, and if the experiment is stopped, the control subsystem enters a closed state.
The invention has the following beneficial effects: according to the invention, the sampling barrel which is recycled is arranged, the sampling barrel continuously samples runoff generated in the soil tank through the annular sampling crawler, the sampling times are recorded, and the sampling barrel is extracted at set intervals or randomly for storage, so that the subsequent research is facilitated, the whole process realizes completely unmanned automatic sampling and automatic sampling, the runoff sediment amount of the soil tank can be accurately calculated through the measurement of the sampling times, the completely automatic sampling and sample storage of the runoff sediment process in the soil tank are realized, the workload of personnel is greatly reduced, and the labor and the experimental cost are saved.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the sampling subsystem according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a serpentine track according to a first embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a sampling bucket according to a second embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a sampling barrel with a concave arc according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cleaning subsystem according to a fifth embodiment of the present invention.
Detailed Description
The first embodiment is as follows:
the embodiment is a continuous sampling and storing system for runoff sediment in an indoor soil box test, and is shown in figures 1, 2 and 3. The embodiment comprises the following steps: a sampling subsystem 1, a sample storage subsystem 2, a control subsystem 3, and a washing subsystem 4, as shown in fig. 1. The sampling subsystem comprises: a plurality of sampling buckets which surround the annular sampling crawler belt which rotates intermittently according to the water taking condition, wherein the sampling buckets are connected with the annular sampling crawler belt through an automatic unlocking mechanism; the sampling subsystem is also provided with a sampling port 101 connected with a runoff water outlet pipeline of the soil tank, the sampling port is aligned with the upper opening of a sampling barrel 102 and is provided with a primary water level gauge 103, the primary water level gauge is electrically connected with the control subsystem, the control subsystem is connected with a motor driving an annular sampling crawler 104 to run (as shown in figure 2, only one sampling barrel is shown in the restriction figure 2 for drawing, a plurality of sampling barrels are required to surround the annular sampling crawler in practice), and the control subsystem is provided with a timer for sampling time of the sampling barrel and a time counter for sampling rainfall times; the sample storage subsystem is a sample storage area 202 provided with a snake track 201 (shown in fig. 3), the starting point of the snake track is arranged on the stop position of a sampling bucket, and the starting point of the snake track is provided with a storage annular crawler 203.
The soil tank described in this embodiment is an inclined tank body, and soil for experiments is buried in the tank body to form a soil experimental area with a slope. The upper end of the inclined groove body is provided with a mechanism for generating water flow so that the water flow flows down from the top of the slope to form the simulated scouring of the slope soil by the water flow. Or a mechanism for generating water flow is not arranged, but an artificial rainfall mode is used to generate runoff and simulate the effect of rainwater on the soil slope. The lower end of the trough body is provided with a structure for receiving runoff, all the rainwater of artificial rainfall on the slope surface is collected together and output through a pipeline. In this embodiment, the collected rains of artificial rainfall, including runoff produced by the slope and directly-falling rainwater, are measured together to obtain data of the slope runoff and sediment erosion process.
The sampling subsystem be one set of water receiving and the mechanism of measurement runoff, the main part of this set of mechanism is an annular sample track, has a plurality of sampling buckets, and each sampling bucket is arranged side by side as the suitable for reading is intensive, one connects one to can collect the rivers that the sample connection flows completely, outside the sampling bucket of never spilling.
The annular sampling track is driven by step motor and is rotatory, can produce intermittent type's motion, and after a sample bucket was filled with by the runoff, step motor drove annular sampling track motion one section, puts another sample bucket in the play water below, continues to collect the sample, and the continuous intermittent type of annular sampling track moves, drives the continuous water receiving below the delivery port of sample bucket one by one, forms the function of measurement water yield and silt.
The annular sampling crawler belt is provided with a hook, and the hook is combined with a clamping ring on the sampling barrel to form a connecting mechanism of the annular sampling crawler belt and the sampling barrel. When the sampling barrel needs to be separated from the annular sampling crawler belt, the annular sampling crawler belt can be adopted to descend, the sampling barrel is supported, the clamping hook is separated from the clamping ring, and the sampling barrel is separated from the annular sampling crawler belt.
Can set up the fluviograph on the sample connection, the height of water level in the measurement sampling bucket reaches certain high back, and the fluviograph informs the control subsystem promptly, and the control subsystem then controls the motion of annular sample track, makes the sampling bucket of being receiving water remove, trades an empty sampling bucket and continues the water receiving. The water level meter can adopt an ultrasonic water level meter or other water level measuring sensors capable of outputting electric signals.
The shape of the sampling bucket is a combination of an inverted truncated cone and a cylinder. The diameter of the upper end of the truncated cone is D1, the diameter of the lower end of the truncated cone is D2, the lower end of the truncated cone is connected with a cylinder with the height h2, and the height h3 of the part of the truncated cone is H3. The position 1/5 of upper end establishes the indent arc card and blocks the groove, and the lower extreme establishes the hinge and connects and seals with the bottom to realize automatic and the card of annular sample track is solid and bottom seal in the transmission in-process. The stepping motor drives the annular sampling track to do circular motion through the transmission gear. The annular sampling crawler belt is provided with sampling barrel clamping grooves every 50cm, the straight section of the annular sampling crawler belt is 1m long, and the arc section is a semicircle with the diameter of 1 m. The ultrasonic primary water level meter is used for monitoring the height of the water surface in the sampling barrel, reading water level data by the control system at high frequency, reaching a set water level, and immediately controlling the stepping motor to drive the annular sampling crawler to finish sampling. While preparing for the next sample.
The sampling bucket can also be in other shapes, such as a cylindrical shape, a polygonal prism shape and the like.
The sample storage subsystem is used for storing a plurality of sampling buckets randomly drawn in the sampling process as samples so as to carry out further analysis. The sample storage subsystem utilizes the concave arc clamping groove and the guide rail on the upper part of the sampling barrel to carry out tight arrangement and transmission. Before sampling, the sample is arranged in snake-shaped close arrangement in the preparation area, and after sampling, the sample is arranged in snake-shaped close arrangement in the storage area. The snake-shaped arrangement is to increase a plurality of turns of the track and store more sampling buckets as much as possible in a relatively small space.
The cleaning subsystem is used for discharging water and silt in the sampling barrel which is not intended to be stored as the next sampling round. When the sampling bucket reaches the cleaning position along with the annular sampling crawler, the bottom cover of the sampling bucket is opened, and one-time reciprocating cleaning of the part 2/3 below the inner wall of the sampling bucket is carried out. The cleaning subsystem comprises a water storage tank, a water pump, a water guide pipe and a spray head driven by a motor to stretch. The water pump can be connected with the storage water tank of the artificial rainfall device and used as a water source, and the water pressure is increased by using the water pump, so that the spray head sprays water flow to clean the 2/3 area below the sampling barrel. The sampling barrel is cleaned by circulating for several times under the driving of the motor, and the sampling barrel is weighed for standby application after the sampling barrel is cleaned. For the sanitization, the cleaning subsystem can set up ultrasonic vibrator, drives the vibrations of the sampling bucket in the washing, will take sediment and water in the sampling bucket to clear away completely.
The control subsystem is an electronic device with data processing and data storage functions, and can be a common PC computer, an industrial personal computer, an embedded system and the like. The control subsystem can be electrically connected with the artificial rainfall device, when the rainfall device is not started, namely under the condition of no artificial rainfall, the control subsystem is in a dormant state, and when the artificial rainfall device starts rainfall, information of rainfall starting is sent to the control subsystem, and the control subsystem is started. The control subsystem can also be connected with a rainfall sensor, and after artificial rainfall begins, the rainfall sensor obtains rainfall information to start the control subsystem.
The control subsystem controls the operation of the annular sampling crawler and the annular storage crawler, and also records the rainfall starting time t1, the rainfall intensity i and the rainfall p, monitors the community water outlet outflow time t2, and the sampling bucket receives the water sampling starting time t3 and the water sampling finishing time t 4. And controlling the ultrasonic transducer to perform ultrasonic vibration on the water sample in the sampling barrel. And recording the water depth h1 in the sampling bucket measured by the re-measuring water level meter. Recording and sampling bucket + water sample weight mGeneral assembly. And controlling to open the bottom plate of the sampling barrel and emptying the sampling barrel. And controlling the pressurizing pump and the miniature cleaning spray head to clean the sampling barrel in a reciprocating way. Recording the weight m of the sampling barrelBarrel. And calculating the clear water amount, the sediment amount and the sand content according to a formula. And controlling the stepping motor to realize automatic interval sampling or encrypted sampling according to rainfall intensity according to a set value.
Because the whole system is provided with various electronic equipment and automation equipment, a rainproof box body can be arranged for preventing the electronic equipment from being wetted and causing faults in artificial rainfall. The rain-proof box body is made of plastic or stainless steel, and the middle parts of the four side surfaces are provided with ventilation windows with shutter structures. The upper part of one side of the box body is provided with a rainproof control panel of an automatic control device.
Example two:
this embodiment is an improvement of the first embodiment, which is a refinement of the first embodiment regarding the sampling bucket. The upper portion of the sampling barrel described in this embodiment is an inverted circular truncated cone 1021, the lower portion is a cylinder 1022, the bottom portion is provided with a shutter 1023, and the cylinder portion is provided with at least two clamping rings 1024, as shown in fig. 4.
The sampling barrel can be made of stainless steel or high-strength plastic. The valve can be opened and closed by adopting an electromagnetic switch. The clamping ring is matched with the clamping hook 1041 of the annular sampling crawler belt, the clamping hook is hooked on the clamping ring, and the annular sampling crawler belt can drive the sampling barrel to operate. The clamp ring can be set to 2-4, sets up the clamp ring more, can make annular sampling track combine more firm with the sampling bucket, but too much clamp ring also can make the system too complicated, produces the trouble easily.
Example three:
this embodiment is an improvement of the above embodiment, and is a refinement of the above embodiment with respect to the sampling bucket. The circular platform portion of the sampling barrel described in this embodiment is provided with a concave arc-shaped retaining groove 1025 that mates with the rail 105, as shown in fig. 5.
The concave arc-shaped clamp groove is matched with the rail, and the rail is embedded in the groove, so that the sampling barrel can slide along the rail. The annular sampling track dropping mechanism can enable the annular sampling track to move up and down (in the direction of an arrow in figure 5), so that the annular sampling track is combined with and separated from the sampling bucket. When needs sampling, annular sampling track whereabouts makes pothook on the annular sampling track break away from with the card on the sampling bucket encircles, and in the sampling bucket slided into the track, the recess gomphosis on track and the sampling bucket had annular storage track and will imbed orbital sampling bucket and take away.
Example four:
this embodiment is an improvement of the above-described embodiment, and is a refinement of the above-described embodiment with respect to the washing subsystem. The cleaning subsystem of this embodiment includes: an openable shock ring 107 and automatic flusher provided on a stop of the sampling bucket, as shown in FIG. 6.
The openable and closable vibration ring has the following functions: when the valve of sampling bucket was opened, the water and the silt in the sampling bucket flowed out the sampling bucket, and in order to the sanitization, the vibrations ring that can open and shut closed (arrow direction in fig. 6) blocked the sampling bucket to begin vibrations, will glue and shake the falling of water and silt in the sampling bucket, cooperation self-cleaning ware will sample the bucket sanitization.
Example six:
this embodiment is a modification of the above-described embodiment, and is a refinement of the above-described embodiment with respect to the automatic washer. The automatic cleaning device of this embodiment includes: a flush pump 401 connected to a water supply line and connected to a spray head 402 capable of automatic expansion and contraction as shown in fig. 6.
The automatic cleaning device is used for cleaning silt in the sampling barrel through the pressurized water column, the pressure of the water column is provided by the water pump, the water source can be extracted from the water source used by the artificial rainfall device, and the water source is sprayed out through the sprayer after being pressurized by the water pump. The shower nozzle is installed on the pipe that can stretch out and draw back automatically, makes the shower nozzle can stretch out and draw back the rotation, carries out comprehensive washing about going up and down to the sampling bucket inner wall.
Example seven:
the embodiment is a method for continuously sampling and storing runoff silt in an indoor soil tank test by using the system, and the method comprises the following steps:
the method comprises the following steps of (I) starting an automatic control subsystem: and when the artificial rainfall is started, the automatic control subsystem is started at the same time.
The rainfall of the artificial rainfall device can simulate the gradually increased rainfall amount when the natural rainfall starts, and can also be directly started to the rainfall amount required by the experiment, so that the sampling and storing system for starting the rainfall directly enters the sampling and storing working state so as to cope with any rainfall starting state of the artificial rainfall device.
(II) sampling: when the soil tank produces runoff, the runoff flows into a first sampling barrel through the sampling port, the water level meter for initial measurement measures the water level in the sampling barrel at a frequency of at least 50 times/second, the control subsystem starts to record the timing of the runoff generating time of the water outlet, when the water level in the sampling barrel reaches a set value, the control subsystem stops timing and drives the annular sampling crawler to rotate, so that the next sampling barrel enters the lower part of the sampling port and enters the next round of sampling, and the steps are repeated in such a circulating way, and the control subsystem continuously records the sampling times and the runoff generating time of the water outlet of the sampling barrel and serves as the basis for measuring the runoff and the sand content.
The process of sample must be very accurate, consequently, the water level in the appearance bucket is got to the meter volume of passing through the fluviograph in the sample, in case reached the height of requirement, leaves the start sampling annular sampling track, changes the sampling bucket of water intaking. Because the amount of water and silt in the sampling bucket will be measured below accurately, so long as the number of times that the sampling bucket was changed is measured, the runoff amount just can be calculated accurately.
The setting value is a preset water level value, the normal water level value is slightly lower than the height of the sampling barrel, so that the water level in the sampling barrel after sampling is slightly lower than the upper edge of the sampling barrel, the sample can be stably kept in the sampling barrel, and the sample cannot be shaken out of the sampling barrel due to the movement of the sampling barrel. However, the water level value cannot be too low, and too low affects the sampling efficiency, and is generally suitable for 80-90% of the height of the sampling barrel.
(III) selecting a water sample storage step: and according to the observation requirement, the sampling barrel is randomly extracted or set at intervals and sent into a memory for storage.
Some sampling barrels are extracted at certain intervals according to experiment needs, are used as samples and are placed into a storage device to be stored so as to be used in later analysis. Due to the limited capacity of the storage, the endless sampling track can be selected to extract one or several sampling buckets per revolution. Or a plurality of sampling buckets can be randomly drawn and stored with the water and the silt in the sampling buckets so as to carry out further analysis after rainfall.
(IV) cleaning: the sampling bucket that does not select to select the storage gets into along annular sampling track and washs the district, opens sampling bucket bottom valve, emits the water and the silt in the sampling bucket, can open and shut the vibrations ring and carry sampling bucket and vibrations, opens the flush pump, and the shower nozzle stretches out and washs the sampling bucket, and the sampling bucket continues to go on along with annular sampling track after wasing, prepares for sample next time.
After some samples are extracted and stored, other unnecessary water and silt are poured out, and the silt in the sampling bucket is cleaned so as to be sampled next time.
(V) finishing the experiment: after the artificial rainfall is closed, the control subsystem receives a signal of rainfall stopping, the control subsystem stops running in due time according to the runoff condition and enters a standby state, if the experiment is continued, the control subsystem enters a working state again, and if the experiment is stopped, the control subsystem enters a closed state.
When the artificial rainfall equipment is shut down, the control subsystem also obtains information of rainfall stoppage, and because the runoff is lagged, the sampling system cannot leave the shut-down, but should continue to work for a period of time until the runoff is completely stopped.
Finally, it should be noted that the above is only intended to illustrate the technical solution of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred arrangement, it should be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solution of the present invention (such as connection to artificial rainfall equipment, form of sampling bucket, sampling process, overall composition of system, etc.) without departing from the spirit and scope of the technical solution of the present invention.
Claims (2)
1. The utility model provides an experimental runoff silt continuous sampling system of preserving of indoor soil box which characterized in that includes: the system comprises a sampling subsystem, a sample storage subsystem, a control subsystem and a cleaning subsystem; the sampling subsystem comprises: a plurality of sampling buckets which surround the sampling annular sampling crawler belt which rotates intermittently according to the water taking condition, wherein the sampling buckets are connected with the sampling annular sampling crawler belt through an automatic unlocking mechanism; the sampling subsystem is also provided with a sampling port connected with a runoff water outlet pipeline of the soil tank, the sampling port is aligned with the upper opening of a sampling barrel and is provided with a primary water level meter, the primary water level meter is electrically connected with the control subsystem, the control subsystem is connected with a motor driving the sampling annular crawler to run, and the control subsystem is internally provided with a timer for calculating the time when rainwater fills one sampling barrel and a secondary counter for counting the number of times that rainfall fills the sampling barrel; the water level meter is arranged on the sampling port and used for measuring the height of the water level in the sampling barrel, the water level meter informs the control subsystem after the water level reaches a certain height, the control subsystem controls the annular sampling crawler to move, so that the sampling barrel which is receiving water is moved away, and an empty sampling barrel is replaced to continue receiving water; the sampling barrels are arranged side by side as the upper openings of the sampling barrels are densely arranged one by one so as to be capable of completely collecting the water flow flowing out of the sampling openings and not spilling out of the sampling barrels as much as possible; the sample storage subsystem is a sample storage area provided with a snake-shaped track, the starting point of the snake-shaped track is arranged on the stop position of a sampling barrel, and the starting point of the snake-shaped track is provided with an annular storage crawler belt; the upper part of the sampling barrel is an inverted round table, the lower part of the sampling barrel is cylindrical, the bottom of the sampling barrel is provided with a valve, and the cylindrical part is at least provided with two clamping rings; the initial water level meter measures the water level in the sampling barrel at the frequency of at least 50 times/second; the circular table part of the sampling barrel is provided with a concave arc clamping groove matched with the rail; the cleaning subsystem comprises: the openable and closable shaking ring and the automatic flusher are arranged on a stop position of the sampling barrel, and the automatic flusher comprises: and the flushing pump pipe is connected with a water supply pipeline, and the flushing pump is connected with a spray head capable of automatically stretching.
2. A method for continuously sampling and storing runoff sediment in an indoor soil bin test by using the system of claim 1, which is characterized by comprising the following steps:
starting the automatic control subsystem: when the artificial rainfall is started, the automatic control subsystem is started at the same time;
sampling: when the soil tank generates runoff, the runoff flows into a first sampling barrel through a sampling port, a primary water level meter measures the water level in the sampling barrel at a frequency of at least 50 times/second, a control subsystem starts to record the water outlet runoff generating time timing, when the water level in the sampling barrel reaches a set value, the control subsystem stops timing and drives an annular sampling crawler to rotate, so that the next sampling barrel enters the lower part of the sampling port and enters the next round of sampling, and the steps are repeated in a circulating way, and the sampling barrels are arranged in parallel as the upper ports and are connected in series, so that the water flow flowing out of the sampling port can be completely collected and does not spill out of the sampling barrel as much as possible; the control subsystem continuously records the sampling times of the sampling barrel and the water outlet runoff generating time as the basis for measuring runoff and sand content;
and (3) accurately metering: after the sampling bucket gets water, the accurate measurement is carried out at the next stop position: firstly, a two-dimensional code reader of a control subsystem reads a two-dimensional code with the weight of a sampling barrel on the sampling barrel, and simultaneously, a sampling annular sampling crawler belt descends integrally to enable the sampling barrel to fall on a track, an ultrasonic vibrator on the track carries out ultrasonic vibration on sampling water to remove air in the water and crush large blocks of soil possibly existing in the water sample, and after the vibration, a water level meter is retested to determine the water depth in the sampling barrel; weighing the sampling barrel by the weighing sensor, and removing the weight of the sampling barrel to obtain accurate sampling weight;
selecting a stored water sample: sampling buckets which are accurately metered are extracted at set intervals or randomly according to observation requirements and are sent into a memory for storage;
and (3) cleaning: the sampling barrel which is not selected for storage enters a cleaning area along the sampling crawler, a valve at the bottom of the sampling barrel is opened, water and silt in the sampling barrel are discharged, a vibrating ring can be opened and closed to clamp the sampling barrel and vibrate, a flushing pump is started, a nozzle extends out to clean the sampling barrel, the sampling barrel continues to move along with the annular sampling crawler after being cleaned, and next sampling is prepared;
and (3) finishing the experiment: after the artificial rainfall is closed, the control subsystem receives a signal of rainfall stopping, the control subsystem stops running in due time according to the runoff condition and enters a standby state, if the experiment is continued, the control subsystem enters a working state again, and if the experiment is stopped, the control subsystem enters a closed state.
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| CN201229263Y (en) * | 2008-07-29 | 2009-04-29 | 河北先河科技发展有限公司 | Refrigeration type segment sample acid rain acquisition machine |
| KR101179933B1 (en) * | 2010-09-17 | 2012-09-07 | 한국지질자원연구원 | Sequential sampler for runoff water |
| CN203908819U (en) * | 2014-06-12 | 2014-10-29 | 云南大学 | Automatic real-time collecting device for runoff water sample |
| CN204085943U (en) * | 2014-10-29 | 2015-01-07 | 东北大学 | A kind of urban pavement rainwash automatic sampler at times |
| CN204903233U (en) * | 2015-08-04 | 2015-12-23 | 江西光明智能科技有限公司 | Rotation type collection appearance device |
| CN205120597U (en) * | 2015-11-09 | 2016-03-30 | 苏州怡创医疗器械有限公司 | Full -automatic chemiluminiscence tester |
| CN106323694A (en) * | 2016-10-08 | 2017-01-11 | 中国地质科学院水文地质环境地质研究所 | Full-automatic sampling device for roof runoff in different time periods |
-
2017
- 2017-06-20 CN CN201710467251.4A patent/CN107063772B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN107063772A (en) | 2017-08-18 |
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