An experimental device for simulating the migration of pollutants in a medium

Abstract

The utility model discloses a kind of test device simulating the migration of pollutant in medium, belong to pollutant migration simulation test technical field.The test device includes test kettle, embedding pipe and sampling pipe bundle;Embedding pipe includes first pipe body and a plurality of second pipe body communicated with first pipe body, a plurality of sampling ports are equipped on second pipe body, embedding pipe is fixed in test kettle, the central axis of first pipe body is parallel to the central axis of test kettle, the central axis of second pipe body is perpendicular to the central axis of test kettle and intersects with it;Sampling pipe bundle includes a plurality of sampling tubes, sampling pipe bundle is worn in the first pipe body of embedding pipe, and the sampling tube in sampling pipe bundle is communicated with the sampling port equipped on second pipe body one by one.The utility model is additionally provided with embedding pipe in test kettle, and sampling pipe bundle is worn in embedding pipe, based on embedding pipe and sampling pipe bundle, can carry out comprehensive sampling to pollutant in medium, and then explore the overall migration law of pollutant in medium.

Description

Technical Field

[0001] This utility model relates to the field of pollutant migration simulation test technology, and in particular to a test device for simulating the migration of pollutants in a medium. Background Technology

[0002] The purpose of studying the environmental behavior of pollutants in underground media, such as migration and fate, is to clarify the controlling factors and potential risks of pollutant transport with groundwater, and to provide a scientific basis and approach for pollution prediction and prevention.

[0003] Currently, most research on pollutant migration patterns focuses on the migration of pollutants in saturated porous media, typically using homogeneous media such as quartz sand or disturbed soil media for migration simulation experiments. Patent CN116625885A discloses an experimental device and method for simulating the vertical migration of nanoplastics in a medium. The experimental device includes a medium-filled column, a first dispensing device, a second dispensing device, a first collecting device, a second collecting device, a pressure measuring device, a temperature control device, and a rainfall simulation device. The first dispensing device dispenses the test solution from the bottom of the medium-filled column, the second dispensing device dispenses the test solution from the top of the medium-filled column, the first collecting device collects and measures the test solution flowing out of the medium-filled column from the bottom, and the second collecting device samples the test solution from the medium-filled column.

[0004] However, in the above-mentioned experimental setup, the second collection device can only analyze the vertical migration of pollutants in the medium filling column, but cannot analyze the horizontal migration of pollutants in the medium filling column, so the experimental conclusions are not comprehensive enough. Utility Model Content

[0005] The purpose of this invention is to provide an experimental device for simulating the migration of pollutants in a medium, based on the existing technology. It is based on a buried tube and a sampling tube bundle, and the sampler can comprehensively sample the pollutants in the medium to explore the overall migration law of pollutants in the medium.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An experimental apparatus for simulating the migration of pollutants in a medium includes a test vessel, a buried tube, and a sampling tube bundle;

[0008] The embedded tube includes a first tube body and several second tube bodies connected to the first tube body. Several sampling ports are provided on the second tube bodies. The embedded tube is fixed inside the test vessel. The central axis of the first tube body is parallel to the central axis of the test vessel, and the central axis of the second tube body is perpendicular to and intersects the central axis of the test vessel.

[0009] The sampling tube bundle includes several sampling tubes, which are inserted into the first tube body of the buried tube, and the sampling tubes in the sampling tube bundle are connected to the sampling ports provided on the second tube body.

[0010] Furthermore, a filter screen is provided in the sampling port.

[0011] Furthermore, the sampling port is located on the lower side of the second tube.

[0012] Furthermore, it also includes a sampling adapter, which is connected to each sampling tube in the sampling tube bundle, and is used to connect the sampling tube to the sampler.

[0013] Furthermore, the sampling adapter is provided with several sampling channels. Each sampling tube in the sampling tube bundle is connected to a sampling channel on the sampling adapter. The end of the sampling channel away from the sampling tube is provided with a conversion port. The sampling adapter is provided with a sampling switch corresponding to each sampling channel. The sampling switch is used to control the opening and closing of the corresponding sampling channel.

[0014] Furthermore, the upper end of the test vessel is provided with a flange, and the first tube is provided with a support plate, which is fixedly connected to the flange at the upper end of the test vessel.

[0015] Furthermore, it also includes a support frame, on which the test vessel is fixed.

[0016] Furthermore, the test vessel includes an upper vessel body and a lower vessel body. The lower end of the upper vessel body and the upper end of the lower vessel body are both provided with flanges. The flange at the lower end of the upper vessel body is sealed to the flange at the upper end of the lower vessel body. The support frame includes an upper connecting ring and a lower connecting ring, as well as several support rods connected between the two. The upper connecting ring is connected to the flange at the lower end of the upper vessel body and / or the flange at the upper end of the lower vessel body.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention provides an experimental device for simulating the migration of pollutants in a medium. A buried tube is added inside the test vessel, and a sampling tube bundle is inserted through the buried tube. Based on the buried tube and the sampling tube bundle, the pollutants in the medium can be comprehensively sampled by the sampler, thereby exploring the overall migration law of pollutants in the medium. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an experimental device for simulating the migration of pollutants in a medium according to the present invention;

[0020] Figure 2 This is a schematic diagram of the sampling adapter in a test device for simulating the migration of pollutants in a medium according to this utility model.

[0021] Labeling instructions: 1. Upper vessel body, 2. Lower vessel body, 3. Pipe connector, 4. Upper connecting ring, 5. Support rod, 6. Lower connecting ring, 7. First tube body, 8. Second tube body, 9. Sampling port, 10. Support plate, 11. Sampling tube bundle, 12. Sampling adapter, 13. Sampling channel, 14. Adapter port, 15. Sampling switch. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Example 1:

[0024] Please see Figure 1 As shown, a test apparatus for simulating the migration of pollutants in a medium includes a test vessel, a buried tube, and a sampling tube bundle 11.

[0025] The bottom of the test vessel is equipped with a pipe joint 3, through which liquid is injected into the test vessel or drained from the test vessel.

[0026] The embedded tube includes a first tube body 7 and several second tube bodies 8 connected to the first tube body 7. Several sampling ports 9 are provided on the second tube bodies 8. The embedded tube is fixed inside the test vessel. The central axis of the first tube body 7 is parallel to the central axis of the test vessel, and the central axis of the second tube body 8 is perpendicular to and intersects the central axis of the test vessel. The first tube body 7 and the second tube body 8 are rigid tubes.

[0027] Specifically, in order to fix the embedded pipe inside the test vessel, a flange is provided at the upper end of the test vessel, and a support plate 10 is provided on the first pipe body 7. The support plate 10 is fixedly connected to the flange at the upper end of the test vessel.

[0028] The sampling tube bundle 11 includes several sampling tubes, which are inserted into the first tube body 7 of the buried tube, and the sampling tubes in the sampling tube bundle 11 are connected to the sampling ports 9 provided on the second tube body 8. The sampling tubes are flexible tubes.

[0029] Preferably, a filter screen is provided in the sampling port 9. During the sampling process, the filter screen can prevent the medium from entering the sampling tube.

[0030] Preferably, the sampling port 9 is located on the lower side of the second tube body 8. Because the sampling port 9 faces downwards, the filter screen also prevents the medium from entering the sampling tube during the sampling process.

[0031] According to the above design, after the initial pollutant migration test is completed, the subsequent sampling process is as follows:

[0032] By connecting the sampler to the sampling tube in the sampling tube bundle 11, sampling can be performed at the corresponding sampling port 9. After sampling is completed one by one, the pollutants in the medium can be comprehensively sampled, and the overall migration law of pollutants in the medium can be explored.

[0033] Example 2:

[0034] Please see Figures 1-2 As shown, based on Embodiment 1, a sampling adapter 12 is also included. The sampling adapter 12 is connected to each sampling tube in the sampling tube bundle 11 and is used to quickly connect the sampling tube to the sampler to complete the sampling.

[0035] Specifically, the sampling adapter 12 is provided with a number of sampling channels 13. Each sampling tube in the sampling tube bundle 11 is connected to the sampling channel 13 provided on the sampling adapter 12. The end of the sampling channel 13 away from the sampling tube is provided with a conversion port 14. The sampling adapter 12 is provided with a sampling switch 15 corresponding to each sampling channel 13. The sampling switch 15 is used to control the opening and closing of the corresponding sampling channel 13.

[0036] In this embodiment, for example, the number of second tubes 8 is 4, and the number of sampling ports 9 provided on each second tube 8 is 6; the number of sampling adapters 12 is 4, and the number of sampling channels 13 provided in each sampling adapter 12 is 6.

[0037] According to the above design, during the later sampling process, after connecting the sampler to the adapter port 14, sampling can be performed at the corresponding sampling port 9.

[0038] Example 3:

[0039] Please see Figure 1 As shown, based on Example 1, a support frame is also included, and the test vessel is fixed on the support frame.

[0040] Specifically, the test vessel includes an upper vessel body 1 and a lower vessel body 2. Both the lower end of the upper vessel body 2 and the upper end of the lower vessel body 2 are provided with flanges. The flange at the lower end of the upper vessel body 1 is sealed to the flange at the upper end of the lower vessel body 2. The support frame includes an upper connecting ring 4 and a lower connecting ring 6, as well as several support rods 5 connected between the two. The upper connecting ring 4 is connected to the flange at the lower end of the upper vessel body 1 and / or the flange at the upper end of the lower vessel body 2.

[0041] In this embodiment, for example, the upper connecting ring 4, the lower connecting ring 6, and the support rod 5 are all metal parts; the upper connecting ring 4, the flange at the lower end of the upper vessel body 1, and the flange at the upper end of the lower vessel body 2 are connected.

[0042] Of course, the above are only preferred embodiments of this utility model and are not intended to limit the scope of application of this utility model. Therefore, any equivalent changes made to the principle of this utility model should be included within the protection scope of this utility model.

Claims

1. An experimental apparatus for simulating the migration of pollutants in a medium, characterized in that: Includes test vessel, embedded tube and sampling tube bundle; The embedded tube includes a first tube body and several second tube bodies connected to the first tube body. Several sampling ports are provided on the second tube bodies. The embedded tube is fixed inside the test vessel. The central axis of the first tube body is parallel to the central axis of the test vessel, and the central axis of the second tube body is perpendicular to and intersects the central axis of the test vessel. The sampling tube bundle includes several sampling tubes, which are inserted into the first tube body of the buried tube, and the sampling tubes in the sampling tube bundle are connected to the sampling ports provided on the second tube body.

2. The experimental apparatus for simulating the migration of pollutants in a medium according to claim 1, characterized in that: The sampling port is equipped with a filter screen.

3. The experimental apparatus for simulating the migration of pollutants in a medium according to claim 1 or 2, characterized in that: The sampling port is located on the lower side of the second tube.

4. The experimental apparatus for simulating the migration of pollutants in a medium according to claim 1, characterized in that: It also includes a sampling adapter, which is connected to each sampling tube in the sampling tube bundle, and is used to connect the sampling tube to the sampler.

5. The experimental apparatus for simulating the migration of pollutants in a medium according to claim 4, characterized in that: The sampling adapter is provided with several sampling channels. Each sampling tube in the sampling tube bundle is connected to a sampling channel on the sampling adapter. The end of the sampling channel away from the sampling tube is provided with a conversion port. The sampling adapter is provided with a sampling switch corresponding to each sampling channel. The sampling switch is used to control the opening and closing of the corresponding sampling channel.

6. The experimental apparatus for simulating the migration of pollutants in a medium according to claim 1, characterized in that: The upper end of the test vessel is provided with a flange, and the first tube is provided with a support plate, which is fixedly connected to the flange at the upper end of the test vessel.

7. The experimental apparatus for simulating the migration of pollutants in a medium according to claim 1, characterized in that: It also includes a support frame, on which the test vessel is fixed.

8. The experimental apparatus for simulating the migration of pollutants in a medium according to claim 7, characterized in that: The test vessel includes an upper vessel body and a lower vessel body. The lower end of the upper vessel body and the upper end of the lower vessel body are both provided with flanges. The flange at the lower end of the upper vessel body is sealed to the flange at the upper end of the lower vessel body. The support frame includes an upper connecting ring and a lower connecting ring, as well as several support rods connected between the two. The upper connecting ring is connected to the flange at the lower end of the upper vessel body and / or the flange at the upper end of the lower vessel body.

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