CN219348715U - Experimental device for research is taken soil water salt to be moved to package gas - Google Patents
Experimental device for research is taken soil water salt to be moved to package gas Download PDFInfo
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- CN219348715U CN219348715U CN202223098811.9U CN202223098811U CN219348715U CN 219348715 U CN219348715 U CN 219348715U CN 202223098811 U CN202223098811 U CN 202223098811U CN 219348715 U CN219348715 U CN 219348715U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The utility model provides an experimental device for researching migration of salt and water in soil of a gas-covered belt, which comprises a base, a testing module and a data acquisition module, wherein the testing module comprises a testing cylinder, an annular electrode and an electrode head, the testing cylinder is vertically arranged on the base, and an annular constant-temperature sleeve is coaxially fixed on the outer wall of the testing cylinder; the annular electrodes are horizontally and uniformly distributed and fixed on the inner wall of the testing cylinder along the height direction, the number of the electrode heads is the same as that of the annular electrodes, one ends of the electrode heads penetrate through the constant temperature sleeve and the testing cylinder and are connected with the annular electrodes, the other ends of the adjacent electrode heads are connected through first wires, each first wire is connected with a second wire, and all second wires are connected with the data acquisition module; the bottom of the test cylinder is sequentially provided with a gauze component and a collecting funnel, and the aperture of the gauze component is smaller than the particle size of the soil to be tested. The experimental device can carry out experimental study on the migration of the soil water salt in the air-packing belt, and the experimental data is accurate and reliable.
Description
Technical Field
The utility model relates to the technical field of research on soil water and salt migration mechanisms, in particular to an experimental device for researching migration of soil water and salt in a gas-covered zone.
Background
Along with the growth of world population and ecological environment construction, the reasonable utilization and development of limited land resources become one of the problems concerned by countries around the world, the resource attribute of soil water is more and more valued by scholars, and the prevention and treatment of soil salinization and the improvement of salinized soil are the core of the problem.
To solve the core problem, the research on the soil water salt migration mechanism is particularly important, and the soil water salt migration is quite complex. At present, related experimental devices for soil water and salt migration research are available, but the existing devices are used for collecting data in a punching-sensor-sampling mode, in continuous experiments, continuous sampling is needed for soil, and the continuous sampling easily causes structural morphology of the soil to change, so that experimental test data are inaccurate, and the existing experimental devices are lack in data dynamic, visual and real-time collection.
In addition, the soil water and salt migration mechanism can be influenced by various factors, such as slight vibration of external environment, temperature change and the like, which can influence the accuracy of experimental results, and in the existing testing device, the influence factors are not well solved.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the experimental device for researching the migration of the soil water salt in the air-packing belt, and the experimental device can perform experimental research on the migration of the soil water salt in the air-packing belt, and has accurate and reliable experimental data.
The technical scheme adopted for achieving the purposes of the utility model is as follows:
the experimental device for researching migration of water and salt in the soil of the air-packing belt at least comprises a base, a testing module and a data acquisition module, wherein the testing module comprises a testing cylinder, an annular electrode and an electrode head, the testing cylinder is vertically arranged on the base, and an annular constant-temperature sleeve is coaxially fixed on the outer wall of the testing cylinder, so that the testing cylinder is in a constant-temperature state; the annular electrodes are horizontally and uniformly distributed and fixed on the inner wall of the testing cylinder along the height direction, the number of the electrode heads is the same as that of the annular electrodes, one ends of the electrode heads penetrate through the constant temperature sleeve and the testing cylinder and are connected with the annular electrodes, the other ends of the adjacent electrode heads are connected through first wires, each first wire is connected with a second wire, and all second wires are connected with the data acquisition module; the bottom of the test cylinder is sequentially provided with a gauze component and a collecting funnel, the aperture of the gauze component is smaller than the particle size of the measured soil, and the tail end of the collecting funnel is connected with a beaker.
The data acquisition module comprises a conductivity tester, a hub, a data collection card and a PC, wherein all second wires are connected with the conductivity tester, the conductivity tester is connected with the hub, the hub collects conductivity signals, the hub, the data collection card and the PC are sequentially connected, and conductivity data are displayed on the PC.
The temperature sensor is connected with the hub, and the hub collects temperature signals and transmits the temperature signals to the PC.
The constant temperature cover is a closed cavity structure, and the constant temperature cover is communicated with the constant temperature water tank through the upper water guide pipe and the lower water guide pipe, and the constant temperature water tank works to enable the constant temperature cover to be in a constant temperature state.
The test cylinder is vertically arranged on the base through a supporting fixing frame, the supporting fixing frame comprises an upper fixing frame, a lower fixing frame and supporting rods which are connected to four corners of the base in a distributed mode, and the upper fixing frame and the lower fixing frame are respectively and horizontally fixed at the upper part and the lower part between the four supporting rods;
the upper fixing frame and the lower fixing frame have the same structure and comprise square supporting frames, positioning screws, screw caps, fixing blocks and springs, wherein the four positioning screws penetrate through the middle parts of four sides of the square supporting frames respectively, each positioning screw is connected with one screw cap in the square supporting frame, the tail end of each positioning screw is fixedly connected with one fixing block, each positioning screw is sleeved with one spring between the screw cap and each fixing block, and the springs are clamped between the screw caps and the fixing blocks;
the one side that the fixed block kept away from positioning screw is the arc, and curved central angle all is less than 90, adjusting nut, hold-down spring, makes four fixed blocks laminating clamp of upper mount in test cylinder upper portion or constant temperature cover's upper portion to make four fixed blocks laminating clamp of lower mount in the upper portion of collecting funnel or constant temperature cover's lower part, thereby install the test cylinder on the base vertically.
The lower fixing frame is characterized in that connecting rods are connected to four corners of the lower portion of the lower fixing frame, the connecting rods are inclined downwards along the diagonal direction, annular ferrules are fixedly connected in the middle of the four connecting rods, and when the lower fixing frame clamps the upper portion of the collecting funnel or the lower portion of the constant temperature sleeve in a fitting mode, the ferrules are just sleeved on the middle portion or the upper portion of the collecting funnel in a fitting mode.
Foot spirals are uniformly distributed and connected to the bottom of the base, and level bubbles are mounted on the upper surface of the base.
The gauze member is connected to the inner side wall of the bottom of the test cylinder through threads; the collecting funnel is connected to the outer side wall of the bottom of the testing cylinder through threads.
The gauze element comprises an annular connecting piece and a gauze connected to the middle of the annular connecting piece, and matched threads are arranged on the outer circular surface of the annular connecting piece and the inner side wall of the bottom of the testing cylinder.
The annular electrode is made of a copper electrode or other electrode materials with higher conductivity than copper, and the wall thickness of the annular electrode is 1mm and the height of the annular electrode is 5mm.
Compared with the prior art, the technical scheme provided by the utility model has the following advantages: 1. the utility model provides an experimental device for researching the salt-water migration of soil in an air-bag belt, which can be used for carrying out the salt-water migration experiment of soil in the air-bag belt by rainfall, the salt-water migration experiment of soil in the air-bag belt under the dry and wet circulation condition, the salt-water migration experiment of soil in the air-bag belt by temperature and the like, and the apparent migration rate of water in the air-bag belt in the water occurrence state change and migration rule, driving mechanism, infiltration and redistribution stage can be experimentally researched through the experiments.
2. In the test module of the experimental device for researching migration of the salt and the water in the air-in-soil, annular electrodes are uniformly distributed in the height direction in the test cylinder, electrode heads are connected to each annular electrode, adjacent electrode heads are connected through the first lead wires, the second lead wires are connected to the middle part of each first lead wire, the second lead wires are connected with the conductivity tester, soil between the two adjacent electrode heads forms a closed loop, and therefore a resistor is formed, and conductivity of a soil layer between the two adjacent electrode heads is tested. The migration rule of the water can be reflected through the change rule of the conductivity, and the data such as the apparent migration rate of the water can be obtained by combining the height and time rate of infiltration and the water obtained by the collecting device.
3. The experimental device for researching the migration of the water and salt in the air-packing belt soil provided by the utility model can directly feed back data, does not need continuous sampling, and does not damage soil samples, so that experimental data cannot be influenced.
4. According to the utility model, the bottom of the test barrel is connected with the gauze component and the collecting funnel, and when the soil water salt migration law is researched through rainfall and dry-wet circulation experiments, the experimental water is timely discharged through the collecting funnel, so that the influence of residual water after infiltration on experimental data is avoided.
5. According to the utility model, the constant temperature sleeve is sleeved outside the test barrel, so that the test sample in the test barrel is in a constant temperature state, the influence of external environment (temperature change) on an experiment result is avoided, and the experiment data is accurate and reliable. And install temperature sensor on the constant temperature cover, temperature sensor inserts data acquisition module, can real-time supervision experiment temperature.
6. According to the utility model, the test module is installed through the base, the support rod, the upper fixing frame and the lower fixing frame, so that the test module is always in a vertical state, the soil is prevented from shaking during experiments, the test stability is further ensured, and the experimental data are accurate and reliable.
Drawings
FIG. 1 is a schematic connection diagram of an experimental device for researching the migration of water and salt in a gas-coated belt soil;
FIG. 2 is a schematic diagram of a connection structure of a test module according to the present utility model;
FIG. 3 is a schematic diagram showing the internal structure of a test module according to the present utility model;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
FIG. 5 is an enlarged schematic view of portion B of FIG. 3;
FIG. 6 is a schematic view of the structure of the upper fixing frame in the present utility model;
FIG. 7 is a schematic view showing the connection between the lower holder and the ferrule according to the present utility model;
FIG. 8 is a schematic diagram of the connection between the test module and the base, upper mount and lower mount of the present utility model;
in the figure: 1-base, 2-test cylinder, 3-ring electrode, 4-electrode head, 5-constant temperature cover, 6-upper water guide pipe, 7-lower water guide pipe, 8-constant temperature water tank, 9-temperature sensor, 10-first wire, 11-second wire, 12-pipe, 13-gauze component, 14-collecting funnel, 15-upper fixing frame, 1501-square supporting frame, 1502-positioning screw, 1503-nut, 1504-fixed block, 1505-spring, 16-lower fixing frame, 17-supporting rod, 18-connecting rod, 19-ferrule, 20-foot screw, 21-level bubble, 22-conductivity tester.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The experimental device for researching the migration of the soil water salt in the air-packing belt provided by the utility model is shown in figure 1, and at least comprises a base 1, a testing module and a data acquisition module. Specifically, the test module comprises a test cylinder 2, an annular electrode 3 and an electrode head 4, as shown in fig. 2, wherein the test cylinder is an acrylic pipe with the thickness of 5mm, the annular electrode is made of a material with strong conductivity, such as a copper coil or other electrode materials with stronger conductivity than copper, and the wall thickness of the annular electrode is 1mm and the height of the annular electrode is 5mm.
The outer wall of the test tube is coaxially fixed with an annular constant temperature sleeve 5, and in the embodiment, the top and the bottom of the test tube are not sleeved by the constant temperature sleeve, so that the fixing of the test tube and the connection of the collecting funnel are facilitated. The constant temperature cover is closed cavity structure, see fig. 3, and the constant temperature cover is connected as an organic whole structure with the test tube, and the constant temperature cover passes through last aqueduct 6 and lower aqueduct 7 intercommunication constant temperature water tank 8, and the constant temperature water tank work makes the constant temperature water get into the closed cavity of constant temperature cover from lower aqueduct in, in quiet last aqueduct inflow constant temperature water tank from closed cavity to make the hydrologic cycle, and then guarantee that the test tube in constant temperature cover and the constant temperature cover is in the constant temperature state. In this embodiment, the temperature sensor 9 for detecting the temperature of the constant temperature sleeve is installed on the constant temperature sleeve, that is, the probe of the temperature sensor extends into the closed cavity from the side wall of the constant temperature sleeve, see fig. 3, and the temperature of the constant temperature sleeve is accurately detected, that is, the temperature of the test tube is detected, see fig. 2. The annular electrodes are horizontally and uniformly distributed and fixed on the inner wall of the test cylinder along the height direction, and can be glued and the like, and the distribution distance between the annular electrodes is determined according to experimental precision; the number of the electrode heads is the same as that of the annular electrodes, one end of each electrode head penetrates through the constant temperature sleeve and the testing cylinder and is connected with the annular electrodes, the electrode heads only need to be in contact with the annular electrodes, the other ends of the adjacent electrode heads are connected through first wires 10, and each first wire is connected with a second wire 11, as shown in fig. 3 and 4. All the second wires are connected with the conductivity tester of the data acquisition module, and soil between two adjacent electrode heads forms a closed loop, so that a resistor is formed, and the conductivity of a soil layer between two adjacent electrode heads is tested.
The bottom of the testing cylinder is sequentially provided with a gauze member 13 and a collecting funnel 14, the aperture of the gauze member is smaller than the grain diameter of the tested soil, the gauze member is connected to the inner side wall of the bottom of the testing cylinder through threads, specifically, the gauze member comprises an annular connecting piece and a gauze connected to the middle of the annular connecting piece, and matched threads are arranged on the outer circular surface of the annular connecting piece and the inner side wall of the bottom of the testing cylinder, as shown in fig. 5. The collecting funnel is connected to the outer side wall of the bottom of the testing cylinder through threads, specifically, the upper portion of the collecting funnel is cylindrical, the upper portion of the collecting funnel is provided with internal threads, the outer side wall of the bottom of the testing cylinder is provided with matched external threads, the middle portion and the lower portion of the collecting funnel are funnel-shaped, and the tail end of the collecting funnel is connected to a beaker (not shown in the figure) through a guide pipe 12. When studying the soil water salt migration law through rainfall and dry-wet cycle experiments, the experimental water is discharged through a collecting funnel.
The test cylinder is vertically installed on the base, specifically, the test cylinder is vertically installed on the base through a supporting fixing frame, the supporting fixing frame comprises an upper fixing frame 15, a lower fixing frame 16 and supporting rods 17 which are connected to four corners of the base in a distributed mode, and the upper fixing frame and the lower fixing frame are respectively and horizontally fixed on the upper portion and the lower portion between the four supporting rods, as shown in fig. 1. In this embodiment, the structure of the upper fixing frame is the same as that of the lower fixing frame, here, the structure of the upper fixing frame is shown in fig. 6, and the upper fixing frame comprises a square supporting frame 1501, positioning screws 1502, nuts 1503, fixing blocks 1504 and springs 1505, wherein the four positioning screws respectively penetrate through the middle parts of four sides of the square supporting frame, nuts are connected to each positioning screw in the square supporting frame, fixing blocks are fixedly connected to the tail ends of each positioning screw, springs are sleeved between the nuts and the fixing blocks, and the springs are clamped between the nuts and the fixing blocks, namely, the outer diameters of the springs are smaller than the outer diameters of the nuts.
The one side that the fixed block kept away from positioning screw is the arc, and curved central angle all is less than 90, adjusting nut, hold-down spring, makes four fixed blocks laminating clamp in the upper portion of test tube or the upper portion of constant temperature cover of upper fixing frame to make four fixed blocks laminating clamp of lower mount in the upper portion of collecting funnel or the lower part of constant temperature cover, thereby install the test tube on the base vertically. The force is transmitted to the screw cap from the fixing block through the spring, the fixing effect is achieved by combining the positioning screw rod, and the test tube is good in fixing effect and not easy to loose. In this embodiment, the four fixing blocks of the upper fixing frame are attached and clamped on the upper portion of the testing cylinder, that is, the arcs of the four fixing blocks of the upper fixing frame are matched with the outer diameter of the testing cylinder, the four fixing blocks of the lower fixing frame are attached and clamped on the lower portion of the constant temperature sleeve, that is, the arcs of the four fixing blocks of the lower fixing frame are matched with the outer diameter of the constant temperature sleeve. Thereby vertically mounting the test cartridge on the base. The arc structures of the upper fixing frame and the lower fixing frame ensure the vertical installation of the test cylinder all the time. In order to further ensure the connection stability of the whole test module, the four corners of the lower part of the lower fixing frame are connected with connecting rods 18, the connecting rods are inclined downwards along the diagonal direction, and annular ferrules 19 are fixedly connected in the middle of the four connecting rods, as shown in fig. 7, when the lower fixing frame clamps the upper part of the collection funnel or the lower part of the constant temperature sleeve in a fitting manner, the ferrules are just sleeved on the middle part or the upper part of the collection funnel in a fitting manner. In this embodiment, the four fixing blocks of the lower fixing frame are attached and clamped at the lower part of the constant temperature sleeve, so that the ferrule is just attached and sleeved at the upper part of the collecting funnel, see fig. 5 and 8.
In this embodiment, the bottom equipartition of base is connected with foot spiral 20, specifically, is connected with four foot spirals in the bottom four corners department of base, and the upper surface mounting of base has level bubble 21, and rotatory foot spiral makes the level bubble be in intermediate position to leveling to the upper surface of base, thereby ensure that the test section of thick bamboo can be in vertical state all the time, avoid because the influence of test section of thick bamboo slope to experimental data, as shown in fig. 8.
The data acquisition module comprises a conductivity tester 22, a hub, a data collection card and a PC, wherein all wires II are connected with the conductivity tester, the conductivity tester and the temperature sensor are respectively connected with the hub, the hub collects conductivity signals and temperature signals, the hub, the data collection card and the PC are sequentially connected, and temperature data and conductivity data are displayed on the PC, as shown in figure 1.
When experiments need to be carried out, the upper fixing frame and the lower fixing frame are loosened, the test cylinder and the constant temperature sleeve are taken out, the soil sample is filled in the test cylinder by means of the sampler in a layered filling mode, after the soil sample is filled, the test cylinder is filled and collected on the funnel to form a whole, the upper fixing frame and the lower fixing frame are clamped, the whole device is fixed up and down completely, whether the device is vertical or not is determined by observing whether the base level bubble is in the center or not, if not, the whole device is centered by rotating the foot screw at the bottom, so that the whole device is vertical, the constant temperature water tank works, the test cylinder is in a constant temperature state, then a first lead and a second lead are connected, the temperature sensor and the conductivity tester are connected with the hub, and finally the hub, the data collection card and the PC are sequentially connected, and the experiment can be started after the whole system is connected completely. The experimental device provided by the utility model can be used for researching the experiment of rainfall on the migration of the water salt in the soil of the air-packing belt, the experiment of the migration of the water salt in the air-packing belt under the dry and wet circulation condition, the experiment of the migration of the water salt in the soil of the air-packing belt under the temperature, and the like.
Claims (10)
1. Experimental device for research package gas area soil water salt migration includes base, test module and data acquisition module at least, its characterized in that: the testing module comprises a testing cylinder, an annular electrode and an electrode head, wherein the testing cylinder is vertically arranged on the base, and an annular constant-temperature sleeve is coaxially fixed on the outer wall of the testing cylinder, so that the testing cylinder is in a constant-temperature state; the annular electrodes are horizontally and uniformly distributed and fixed on the inner wall of the testing cylinder along the height direction, the number of the electrode heads is the same as that of the annular electrodes, one ends of the electrode heads penetrate through the constant temperature sleeve and the testing cylinder and are connected with the annular electrodes, the other ends of the adjacent electrode heads are connected through first wires, each first wire is connected with a second wire, and all second wires are connected with the data acquisition module; the bottom of the test cylinder is sequentially provided with a gauze component and a collecting funnel, the aperture of the gauze component is smaller than the particle size of the measured soil, and the tail end of the collecting funnel is connected with a beaker.
2. The experimental set-up for studying the migration of salt with soil water in a gas-enclosed zone according to claim 1, wherein: the data acquisition module comprises a conductivity tester, a hub, a data collection card and a PC, wherein all second wires are connected with the conductivity tester, the conductivity tester is connected with the hub, the hub collects conductivity signals, the hub, the data collection card and the PC are sequentially connected, and conductivity data are displayed on the PC.
3. The experimental set-up for studying the migration of salt with soil water in a gas-enclosed zone according to claim 1, wherein: the temperature sensor is connected with the hub, and the hub collects temperature signals and transmits the temperature signals to the PC.
4. The experimental set-up for studying the migration of salt with soil water in a gas-enclosed zone according to claim 1, wherein: the constant temperature cover is a closed cavity structure, and the constant temperature cover is communicated with the constant temperature water tank through the upper water guide pipe and the lower water guide pipe, and the constant temperature water tank works to enable the constant temperature cover to be in a constant temperature state.
5. The experimental set-up for studying the migration of salt with soil water in a gas-enclosed zone according to claim 1, wherein: the test cylinder is vertically arranged on the base through a supporting fixing frame, the supporting fixing frame comprises an upper fixing frame, a lower fixing frame and supporting rods which are connected to four corners of the base in a distributed mode, and the upper fixing frame and the lower fixing frame are respectively and horizontally fixed at the upper part and the lower part between the four supporting rods;
the upper fixing frame and the lower fixing frame have the same structure and comprise square supporting frames, positioning screws, screw caps, fixing blocks and springs, wherein the four positioning screws penetrate through the middle parts of four sides of the square supporting frames respectively, each positioning screw is connected with one screw cap in the square supporting frame, the tail end of each positioning screw is fixedly connected with one fixing block, each positioning screw is sleeved with one spring between the screw cap and each fixing block, and the springs are clamped between the screw caps and the fixing blocks;
the one side that the fixed block kept away from positioning screw is the arc, and curved central angle all is less than 90, adjusting nut, hold-down spring, makes four fixed blocks laminating clamp of upper mount in test cylinder upper portion or constant temperature cover's upper portion to make four fixed blocks laminating clamp of lower mount in the upper portion of collecting funnel or constant temperature cover's lower part, thereby install the test cylinder on the base vertically.
6. The experimental apparatus for studying the migration of salt and water in a gas-coated belt soil according to claim 5, wherein: the lower fixing frame is characterized in that connecting rods are connected to four corners of the lower portion of the lower fixing frame, the connecting rods are inclined downwards along the diagonal direction, annular ferrules are fixedly connected in the middle of the four connecting rods, and when the lower fixing frame clamps the upper portion of the collecting funnel or the lower portion of the constant temperature sleeve in a fitting mode, the ferrules are just sleeved on the middle portion or the upper portion of the collecting funnel in a fitting mode.
7. The experimental set-up for studying the migration of salt with soil water in a gas-enclosed zone according to claim 1, wherein: foot spirals are uniformly distributed and connected to the bottom of the base, and level bubbles are mounted on the upper surface of the base.
8. The experimental set-up for studying the migration of salt with soil water in a gas-enclosed zone according to claim 1, wherein: the gauze member is connected to the inner side wall of the bottom of the test cylinder through threads; the collecting funnel is connected to the outer side wall of the bottom of the testing cylinder through threads.
9. The experimental set-up for studying the migration of salt with soil water in a gas-enclosed zone of claim 8, wherein: the gauze element comprises an annular connecting piece and a gauze connected to the middle of the annular connecting piece, and matched threads are arranged on the outer circular surface of the annular connecting piece and the inner side wall of the bottom of the testing cylinder.
10. The experimental set-up for studying the migration of salt with soil water in a gas-enclosed zone according to claim 1, wherein: the annular electrode is made of a copper electrode or an electrode material with higher conductivity than copper, and the wall thickness of the annular electrode is 1mm and the height of the annular electrode is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223098811.9U CN219348715U (en) | 2022-11-22 | 2022-11-22 | Experimental device for research is taken soil water salt to be moved to package gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223098811.9U CN219348715U (en) | 2022-11-22 | 2022-11-22 | Experimental device for research is taken soil water salt to be moved to package gas |
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| CN219348715U true CN219348715U (en) | 2023-07-14 |
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| CN202223098811.9U Active CN219348715U (en) | 2022-11-22 | 2022-11-22 | Experimental device for research is taken soil water salt to be moved to package gas |
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