CN208091858U - A kind of experimental rig for studying NAPLs migrations and phase transformation law - Google Patents
A kind of experimental rig for studying NAPLs migrations and phase transformation law Download PDFInfo
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- CN208091858U CN208091858U CN201820692330.5U CN201820692330U CN208091858U CN 208091858 U CN208091858 U CN 208091858U CN 201820692330 U CN201820692330 U CN 201820692330U CN 208091858 U CN208091858 U CN 208091858U
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Abstract
The utility model provides a kind of experimental rig for studying NAPLs migrations and phase transformation law.The device includes：Experimental box, lucite cylinder, NAPLs gas concentration sensors and Markov bottle.The soil sample of the specified dry density and specified water content that prepare is inserted in experimental box, in lucite cylinder embedment soil sample equipped with NAPLs, metal mesh keg is fixed on the antetheca of experimental box, and it is embedded in soil sample, NAPLs gas concentration sensors are mounted in metal mesh keg, NAPLs penetrates into soil sample, and Markov bottle is connected by intake tunnel built-in in the metab of rubber hose and experimental box, and the water in Markov bottle flows to the bottom of soil sample.Experimental provision provided by the utility model and method can quantitatively measure when NAPLs migrates in unsaturated soil that gaseous phase volume score changes with time at measuring point, also the NAPLs gas phase concentrations regularity of distribution at synchronization different measuring points can be obtained, NAPLs migrations and phase transformation law under conditions of different dry densities, water content can be also measured.
Description
Technical field
The utility model is related to soil investigation technical field more particularly to a kind of monitoring NAPLs (non-aqueous
Phase liquids, non-soluble liquid) migration process and the experimental rig of phase transformation in unsaturated soil.
Background technology
For oil as current one of main energy sources object, application is more and more extensive.Some petroleum-type products are producing, fortune
It is defeated, some leakage accidents inevitably occur during storage and use, pollute underground environment, the pollutant and water of these nonaqueous phases are not
It is compatible and be difficult to degrade, long-term existing pollution sources in the soil of underground can be become.Currently, some scholars both domestic and external exist to NAPLs
Migration rule in unsaturated soil has done relevant research, but lacks direct experimental verification, also without relevant experimental provision
Monitor the phase transformation of the NAPLs during this.
Utility model content
The embodiments of the present invention provide a kind of experimental rig for studying NAPLs migrations and phase transformation law, to overcome
The shortcomings that prior art.
A kind of monitoring NAPLs migration process and experimental provision of phase transformation in unsaturated soil, including：Experimental box, organic glass
Glass cylinder and NAPLs gas concentration sensors；
The soil sample of the specified dry density and specified water content that prepare is inserted in the experimental box, it is organic equipped with NAPLs
Glass infuser is embedded in the soil sample, and the NAPLs penetrates into the soil sample, before metal mesh keg is fixed on the experimental box
On wall, the metal mesh keg is embedded in the soil sample, and the NAPLs gas concentration sensors are mounted on the metal mesh keg
In.
Further, described device further includes：Markov bottle, the gold that the Markov bottle passes through rubber hose and the experimental box
Belong to intake tunnel connection built-in in pedestal, the water in the Markov bottle flows to the bottom of the soil sample so that native in experimental box
Body maintains the level of ground water of certain altitude.
Further, the experimental box includes that experiment upper box part, experiment lower box part, metab and metal support, described
It is all by bolt hole and spiral shell to test between upper box part and the experiment lower box part, the experiment lower box part and the metab
It tethers and connects, supported and connected by metal between the experiment upper box part and the metab.
Further, the junction of the bolt hole and the bolt is equipped with sealing joint strip.
Further, the metal mesh keg is fixed on by cored screw on the antetheca of experimental box, and the metal mesh is small
Bucket is successively installed, and installs the metal mesh keg of this layer again after depth of banketing reaches this layer of position.
Further, the aperture of NAPLs gas concentration sensors entrance is reserved with before the experimental box, the aperture is straight
Diameter 4cm；Distance between the adjacent apertures center of circle is 15cm, and along centre, vertically there are 6 apertures, the small pitch bottoms of bottom
15cm, there are 3 row's apertures on the left of axis for horizontal direction, often arrange 4 apertures, and distance between row and row is 30cm.
Further, the NAPLs gas concentration sensors are positioned over by the hole reserved on experimental box in experimental box
Metal mesh keg in, the tail portion of the metal mesh keg is provided with screw thread, this is threaded on a cored screw, and screw rod is another
One is connected with rubber nut, and the junction at the cored screw both ends is equipped with seal washer, NAPLs gas concentration sensors
After wiring is pierced by by the hole at rubber nut center, hole is sealed with glue.
Further, the NAPLs gas concentration sensors are put into soil using laterally three rows, the arrangement of longitudinal row
In sample.
Further, the thickness of the organic glass case is less than its height and width, and the bottom of the lucite cylinder is set
There is metal mesh, the leakage of lucite cylinder bottom surface all directions is identical, and the barrel of the lucite cylinder is carved with
Degree.
Further, the NAPLs gas concentration sensors include semiconductor transducer.
Further, banket 1.1m high altogether in the experimental box body, and the lucite cylinder 10 is buried in the earth 10cm, described
The cylinder overall diameter of organic glass takes 7cm, high 30cm.The technical solution provided by above-mentioned the embodiments of the present invention can be seen
Go out, when the experimental provision and method that the utility model embodiment provides quantitatively can measure NAPLs and migrate in unsaturated soil
Gaseous phase volume score changes with time at measuring point, can also obtain the NAPLs gas phase concentrations at synchronization different measuring points and be distributed
Rule.NAPLs migration process and the experimental method of phase transformation in the unsaturated soil that the utility model embodiment provides, definite principle,
Clear thinking can measure NAPLs migrations and phase transformation law under conditions of different dry densities, water content.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of monitoring NAPLs migration process and phase transformation in unsaturated soil that the utility model embodiment provides
The structural schematic diagram of experimental provision；
Fig. 2 is a kind of structure chart for experimental box that the utility model embodiment provides；
Fig. 3 is the schematic diagram of junction between a kind of experimental box each section that the utility model embodiment provides；
Fig. 4 is a kind of schematic diagram for sensor metal mesh keg junction that the utility model embodiment provides；
Fig. 5 is a kind of structure chart for lucite cylinder that the utility model embodiment provides.
Reference sign：
1 experiment upper box part 2 tests 3 metab of lower box part, 4 Markov bottle
5 sensor preformed hole, 6 metal supports 7 bolt hole, 8 hose connection
9 bolt, 10 lucite cylinder, 11 sealing joint strip, 12 metal mesh keg
13 cored screw, 14 rubber nut, 15 experimental box side wall 16 surpasses fine-meshed metal net
Specific implementation mode
For ease of the understanding to the utility model embodiment, done by taking several specific embodiments as an example below in conjunction with attached drawing into
The explanation of one step, and each embodiment does not constitute the restriction to the utility model embodiment.
This embodiment offers a kind of monitoring NAPLs migration process and experimental provisions of phase transformation in unsaturated soil.
Experimental principle：In a certain range, it can be assumed that the soil body is axisymmetric, that is to say, that NAPLs is horizontal each
The migration in direction is all identical, chooses any horizontal direction along with vertical direction can be obtained by NAPLs in the soil body
Transport conditions, practical three-dimensional problem translate into ideal two-dimensional problems.To be studied for gasoline in experiment, outside gasoline
It is transparency liquid to see, and is not easy to the migration position with observation sharp side, and soudan III stain can be added, and soudan III is a kind of chemistry dye
Toner is mainly used for the dyeing of oil, machine oil and some other industrial solvents, can clearly see sharp side in this way
Position；Gasoline can be undergone phase transition after entering the soil body, and under normal circumstances, mainly gas phase and liquid phase can pass through and measure different positions
The gas phase gasoline and liquid phase gasoline concentration set change with time, currently, the dense of gas phase gasoline can be measured with semiconductor transducer
Degree, currently without suitable reliable sensor, it is water content of soil to be presently considered primary variables for the measurement of the concentration of liquid phase gasoline
And dry density, the soil body for configuring different moisture content under a certain dry density are tested, it is aqueous before changing dry density and still pressing
The amount configuration soil body, can be obtained by the experimental result of same dry density different moisture content and same water content difference dry density in this way
Experimental result；Under conditions of given a certain dry density and water content, it is dense that gas phase gasoline at a certain measuring point can also be obtained
The case where degree changes over time.
The structure for a kind of monitoring the NAPLs migration process and the experimental provision of phase transformation in unsaturated soil that the embodiment provides
As shown in Figure 1, including experimental box, lucite cylinder 10, NAPLs gas concentration sensors and Markov bottle 4.Experimental box includes experiment
Upper box part 1, experiment lower box part 2, metab 3 and metal support 6；Test upper box part 1 and experiment lower box part 2, experiment lower box part 2
Between metab 3 connected by bolt hole 7 and bolt 9, the junction of the bolt hole 7 and bolt 9 is equipped with sealing
Adhesive tape is tested between upper box part 1 and metab 3 through 6 connection of metal support.
In a concrete application of the utility model, banket 1.1m high altogether in experimental box body, and simulated leakage source is equipped with
The lucite cylinder 10 of NAPLs is buried in the earth 10cm, and the overall diameter of the lucite cylinder 10 in simulated leakage source takes 7cm, high 30cm.
Gasoline is added in lucite cylinder 10 after the completion of waiting for other preparations all.
Metal mesh keg is fixed on by cored screw on the antetheca of experimental box, and dismounting is easily installed.To banket conveniently, gold
Belong to net keg successively to install, metal mesh keg 12 and the sensor at this are installed again after depth of banketing reaches this layer of position, and
And the metal mesh keg 12 is embedded in the soil sample, NAPLs gas concentration sensors are mounted in metal mesh keg, NAPLs
Gas concentration sensor is also embedded in soil sample, it is ensured that the good working environment of sensor.
The gas phase concentration that above-mentioned NAPLs gas concentration sensors are used for measuring NAPLs in soil sample in practical applications can
With by NAPLs gas concentration sensors, using laterally three rows, the arrangement of longitudinal row is put into soil sample, substantially covers two
Maintenance and operation moves required whole region.
To be positioned over the metal mesh in experimental box small by the hole reserved on experimental box for above-mentioned NAPLs gas concentration sensors
In bucket.Above-mentioned metal mesh keg is made of fine metal mesh, and soil particle cannot be introduced into, and air can freely come in and go out, the small cylinder tail portion of metal
There is screw thread, be connected on a cored screw, screw rod other end is connected with rubber nut, and metal mesh keg is fixed by cored screw
On the wall of experimental box.The junction at above-mentioned cored screw both ends can be equipped with seal washer, NAPLs gas concentration sensors
After wiring is pierced by by the hole at rubber nut center, hole is sealed with glue.
Markov bottle 4 is connect with intake tunnel built-in in experimental box metab (if not considering underground by rubber hose 8
The influence of water or level of ground water can be not connected to Markov bottle when being far below soil depth).Water in Markov bottle 4 flows to the soil sample
Bottom.The scale that the outer wall of the experimental box upper and lower part carries horizontal and vertical direction will be protected during the experiment
Confirm the level of ground water of soil body maintenance certain altitude in tryoff.
The thickness of organic glass case (1 and 2) is much smaller than its height and width, and installs metal support 6 and ensure its stabilization, uses
To simulate the two-dimentional migration process of NAPLs in soil sample.The bottom of lucite cylinder 10 is equipped with super fine-meshed metal net, simulated leakage
Source, it is ensured that the leakage of all directions is identical, and barrel is carved with scale can read the total amount of leakage at any time.Lucite cylinder is logical
The mode being buried in the earth is crossed to fix, it is easy to operate and tally with the actual situation.
Fig. 2 is a kind of structure chart for experimental box that the utility model embodiment provides, and Fig. 3 carries for the utility model embodiment
The schematic diagram of junction between a kind of experimental box each section supplied.Experiment box main body is made of organic glass, and experimental box is high
1.2m, wide 1.2m, thick 15cm；Organic glass wall thickness 1cm, it is ensured that the safety of experimental box；Experimental box pedestal is made of metal, and
It is connected with experiment upper box part by metal support, ensures the stabilization of experimental box.
Junction between experimental box each section is equipped with the sealing joint strip of antiseep.It is reserved with before the experimental box
The aperture that NAPLs gas concentration sensors enter, hole diameter 4cm；Distance between the adjacent apertures center of circle is 15cm, in
Between vertically there are 6 apertures, the small pitch bottom 15cm of bottom, horizontal direction, there are 3 row's apertures, often arranges 4 on the left of axis
A aperture, distance between row and row is 30cm, can refer to Fig. 1.
Optionally, semiconductor transducer may be used in NAPLs gas concentration sensors.
In conclusion the experimental provision that the utility model embodiment provides can quantitatively measure NAPLs in unsaturated soil
Each phase volume fraction changes with time at measuring point when middle migration, can also obtain each phases of NAPLs at synchronization different measuring points
Concentration distribution rule.NAPLs migration process and the experimental method of phase transformation in the unsaturated soil that the utility model embodiment provides, it is former
Reason is clear, clear thinking, can measure NAPLs migrations and phase transformation law under conditions of different dry densities, water content.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the utility model.
One of ordinary skill in the art will appreciate that：The module in equipment in embodiment can describe to divide according to embodiment
It is distributed in the equipment of embodiment, respective change can also be carried out and be located in one or more equipment different from the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should
It is subject to the protection scope in claims.
Claims (10)
1. the experimental rig of a kind of research NAPLs migrations and phase transformation law, which is characterized in that including：Experimental box, lucite cylinder
With NAPLs gas concentration sensors；
The soil sample of the specified dry density and specified water content that prepare is inserted in the experimental box, and the organic glass of NAPLs is housed
Cylinder is embedded in the soil sample, and the NAPLs penetrates into the soil sample, and metal mesh keg is fixed on to the antetheca of the experimental box
On, and the metal mesh keg is embedded in the soil sample, and it is small that the NAPLs gas concentration sensors are mounted on the metal mesh
In bucket.
2. the apparatus according to claim 1, which is characterized in that described device further includes：Markov bottle, the Markov bottle pass through
Rubber hose is connect with intake tunnel built-in in the metab of the experimental box, and the water in the Markov bottle flows to the soil
The bottom of sample so that the soil body maintains the level of ground water of certain altitude in experimental box.
3. the apparatus according to claim 1, which is characterized in that the experimental box include experiment upper box part, experiment lower box part,
Metab and metal support, the experiment upper box part and experiment lower box part, the experiment lower box part and metal bottom
All it is by bolt hole and to be bolted between seat, is supported and connected by metal between the experiment upper box part and the metab
It connects.
4. device according to claim 3, which is characterized in that the junction of the bolt hole and the bolt is equipped with sealing
Adhesive tape.
5. according to the claims 1 or 2 either device described in 3 or 4, which is characterized in that the metal mesh keg passes through sky
Heart screw rod is fixed on the antetheca of experimental box, and the metal mesh keg is successively installed, after depth of banketing reaches this layer of position again
The metal mesh keg of this layer is installed.
6. device according to claim 5, which is characterized in that be reserved with NAPLs gas concentrations before the experimental box
The aperture that sensor enters, hole diameter 4cm；Distance between the adjacent apertures center of circle is 15cm, and along centre, vertically there are 6
Aperture, the small pitch bottom 15cm of bottom, there are 3 row's apertures on the left of axis for horizontal direction, often arrange 4 apertures, row and row
The distance between be 30cm.
7. device according to claim 6, which is characterized in that the NAPLs gas concentration sensors pass through on experimental box
Reserved hole is positioned in the metal mesh keg in experimental box, and the tail portion of the metal mesh keg is provided with screw thread, the screw thread
It is connected on a cored screw, screw rod other end is connected with rubber nut, and the junction at the cored screw both ends is equipped with sealing
Washer, after the wiring of NAPLs gas concentration sensors is pierced by by the hole at rubber nut center, hole is sealed with glue.
8. device according to claim 7, which is characterized in that the NAPLs gas concentration sensors use laterally three rows,
The arrangement of longitudinal row is put into soil sample.
9. the apparatus according to claim 1, which is characterized in that the thickness of the lucite cylinder is less than its height and width
The bottom of degree, the lucite cylinder is equipped with metal mesh, and the leakage of lucite cylinder bottom surface all directions is identical, institute
The barrel for stating lucite cylinder is carved with scale.
10. the apparatus according to claim 1, which is characterized in that banket 1.1m high altogether in the experimental box body, described organic
Glass infuser 10 is buried in the earth 10cm, and the cylinder overall diameter of the organic glass takes 7cm, high 30cm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108398360A (en) * | 2018-05-10 | 2018-08-14 | 北京交通大学 | A kind of experimental rig for studying NAPLs migrations and phase transformation law |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398360A (en) * | 2018-05-10 | 2018-08-14 | 北京交通大学 | A kind of experimental rig for studying NAPLs migrations and phase transformation law |
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