CN104296917A - Device for online monitoring pressure change in penetrating experiment - Google Patents
Device for online monitoring pressure change in penetrating experiment Download PDFInfo
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- CN104296917A CN104296917A CN201410611965.4A CN201410611965A CN104296917A CN 104296917 A CN104296917 A CN 104296917A CN 201410611965 A CN201410611965 A CN 201410611965A CN 104296917 A CN104296917 A CN 104296917A
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- pressure change
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- line monitoring
- pressure
- breakthrough experiment
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Abstract
The invention discloses a device for online monitoring pressure change in a penetrating experiment, wherein the device for online monitoring the pressure change in the penetrating experiment is easy and convenient to operate and accurate in pressure measuring. The device comprises a water supplying container, a peristaltic pump, a columnar device, a collector, a sensor and a computer. The water inlet end of the peristaltic pump is connected with the water supplying container, and the water outlet end of the peristaltic pump is communicated with the lower end of the columnar device. The upper end of the columnar device is connected with the collector through a pipeline, and two sensor connecting ends are arranged at the upper portion and the lower portion of the side wall of the columnar device respectively and are connected with the sensor. The computer is electrically connected with the sensor. The device is easy to operate, accurate and quick in pressure measuring and very suitable for online measuring change of pressure in the penetrating experiment.
Description
Technical field
The present invention relates to penetration test equipment technical field, especially relate to the device of pressure change in a kind of on-line monitoring breakthrough experiment.
Background technology
Thering is provided foundation for evaluating the impact of effluent seepage on quality of groundwater, can be simulated the infiltration process of sewage by soil column-leaching test, the absorption of research pollutant in aeration zone, conversion, self-cleaning mechanism, determine the protective capacities of aeration zone.
Darcy's law: in a certain period t, the seepage flow Q that water flows through from sand and the difference ⊿ h of the water position in water-carrying section A and soil body two ends piezometric tube is directly proportional, and the distance L of the soil body between piezometric tube is inversely proportional to and namely permeates energy loss and seepage velocity is first power equation.
As shown in Figure 1, the upright cylinder of device to be xsect be F, locates opening, has two at a distance of the piezometric tube for L on the right side of upright cylinder darcy Experimental equipment at its upper end.At the bottom of cylinder, with the certain position place below upper and lower piezometric tube, one piece of filter plate is installed, filter plate put into uniform particles, join the good sand of level.Water is injected by cylinder upper end, and unnecessary water overflows from left side water pipe, and water level in cylinder is maintained on a steady state value.The water penetrating layer of sand flows into measuring cup from right side short piece, calculates infiltration capacity Q with this.Suppose that the flow flowing into measuring cup within the t time is Q, if the infiltration capacity in the unit interval is q, so there is q=Q/t.The liquid level simultaneously reading upper piezometric tube and lower piezometric tube is respectively H
1and H
2, the loss of flood peak between two piezometric tube is H
1-H
2namely
, so following two formula can be drawn by Darcy's law: (order
)
or
Common Leaching Experiments, what generally adopt is the size that piezometric surface height carrys out characterization pressure, and the method needs manually to remove reading and carrys out by calculating force value the situation whether judgment experiment has blocking.The method can not carry out real-time detection, can not the safe pressure scope of test experience device, and there is error during artificial reading, likely extends the time of experiment.And the operating process of common Leaching Experiments is numerous and diverse, trouble.
Summary of the invention
Instant invention overcomes shortcoming of the prior art, provide the device of a kind of easy to use, pressure survey pressure change in on-line monitoring breakthrough experiment accurately.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: the device of pressure change in a kind of on-line monitoring breakthrough experiment, comprises water supply container, peristaltic pump, column device, gatherer, sensor and computing machine; The water inlet end of described peristaltic pump connects water supply container, and water side is communicated with the lower end of column device; The upper end of described column device connects gatherer by pipeline, and the top and the bottom of its sidewall respectively have a sensor link to be connected with sensor; Described computing machine is connected with sensor electrical.
Preferably, described column device comprises the body with sensor link of column, is detachably arranged at the end cap at body two ends, and is arranged at the filtering plug in end cap.
Preferably, the sidewall of described body is provided with multiple vertical arrangement, sample tap able to turn on or off.
Preferably, described sample tap is four.
Preferably, described filtering plug is provided with filter membrane close to the one end in the middle part of body.
Preferably, described body is made up of organic glass.
Preferably, described body and end cap are bolted.
Compared with prior art, tool of the present invention has the following advantages:
Pressure changeable device in on-line monitoring breakthrough experiment provided by the invention, this technology utilization column device, uses Darcy's law, and the situation pressure representative blocked by column device in experiment is out; Column device and pressure transducer couple together, and pressure signal are converted to electric signal and feed back on computer and directly show pressure value.Therefore we can analyze the situation of column device blocking according to the data on computer.Can also carry out by pressure the scope that test experiments instrument bears pressure, easy to use, pressure measurement accuracy is high simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of existing darcy experimental provision.
Fig. 2 is structure diagram of the present invention.
Fig. 3 is structure diagram of the present invention.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the vertical view of Fig. 3.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not paying the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The device of pressure change in the breakthrough experiment of on-line monitoring shown in Fig. 2-5, comprises water supply container 1, peristaltic pump 2, column device 3, gatherer 4, sensor 5 and computing machine 6; The water inlet end of described peristaltic pump 2 connects water supply container 1, and water side is communicated with the lower end of column device 3; The upper end of described column device 3 connects gatherer 4 by pipeline, and the top and the bottom of its sidewall respectively have a sensor link 35 to be connected with sensor 5; Described computing machine 6 is electrically connected with sensor 5, and the pressure value measured for receiving sensor 5 also shows.
Described column device 3 comprises the body 31 with sensor link 35 of column, is detachably arranged at the end cap 32 at body 31 two ends, and is arranged at the filtering plug 33 in end cap 32.The sidewall of described body 31 is provided with four vertically arrangements, sample tap 34 able to turn on or off, sample tap is preferably circular, and opened and closed by rubber plug, its quantity suitably can adjust according to sampling demand.
Wherein, described filtering plug 33 is provided with filter membrane (not shown) close to the one end in the middle part of body 31, for preventing mineral chip Particle Blocking filtering plug 33.
Wherein, described body 31 preferably adopts organic glass to make, and is convenient to the process that observation fluid penetrates in column device 3.
Wherein, described body 31 is connected by bolt 36 with end cap 32, the bolt comprising length running through two end cap outer rims in this embodiment longer is connected the shorter bolt of two end cap outer rim length respectively with multiple, bolted form is convenient to dismounting, obviously can also by the mode that removably connects of screw, the form such as to be threaded.
Using method of the present invention is as follows, and this using method is described with the migration of simulated groundwater:
(1) contrived experiment
The migration of simulated groundwater, determines the size of obtain solution used, packed column and the type of filling material.
(2) column device is loaded
Before filling, need the order number measuring all mineral.
Adopt dry heap method during filling, according to different filling column dimensions, the height of each filling must between 5-10 cm at H, and the mineral of each filling are between 40 to 100 orders.
After the mineral of each loading regulation, it is made to reach regulation earth pillar height H.
Control the mineral porosity under the factor of porosity simulation its natural environment of mineral in filling column device.The migration situation of simulated groundwater thus.
(3) peripheral hardware is prepared
The components and parts preparing size, type matching are needed according to test design.
(4) data are recorded
The mode of record data is set according to different experiment purposes.
(5) interpretation of result
Record data are processed, analysis design mothod result; Then need to verify data and result, finally must be with conclusion and suggestion.
Pressure changeable device in on-line monitoring breakthrough experiment provided by the invention, this technology utilization column device, uses Darcy's law, and the situation pressure representative blocked by column device in experiment is out; Column device and pressure transducer couple together, and pressure signal are converted to electric signal and feed back on computer and directly show pressure value.Therefore we can analyze the situation of column device blocking according to the data on computer.Can also carry out by pressure the scope that test experiments instrument bears pressure, easy to use, pressure measurement accuracy is high simultaneously.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a device for pressure change in on-line monitoring breakthrough experiment, is characterized in that: comprise water supply container, peristaltic pump, column device, gatherer, sensor and computing machine; The water inlet end of described peristaltic pump connects water supply container, and water side is communicated with the lower end of column device; The upper end of described column device connects gatherer by pipeline, and the top and the bottom of its sidewall respectively have a sensor link to be connected with sensor; Described computing machine is connected with sensor electrical.
2. the device of pressure change in on-line monitoring breakthrough experiment according to claim 1, it is characterized in that: described column device comprises the body with sensor link of column, is detachably arranged at the end cap at body two ends, and is arranged at the filtering plug in end cap.
3. the device of pressure change in on-line monitoring breakthrough experiment according to claim 2, is characterized in that: the sidewall of described body is provided with multiple vertical arrangement, sample tap able to turn on or off.
4. the device of pressure change in on-line monitoring breakthrough experiment according to claim 3, is characterized in that: described sample tap is four.
5. the device of pressure change in on-line monitoring breakthrough experiment according to claim 2, is characterized in that: described filtering plug is provided with filter membrane close to the one end in the middle part of body.
6. the device of pressure change in on-line monitoring breakthrough experiment according to claim 2, is characterized in that: described body is made up of organic glass.
7. the device of pressure change in on-line monitoring breakthrough experiment according to claim 2, is characterized in that: described body and end cap are bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611965.4A CN104296917A (en) | 2014-11-04 | 2014-11-04 | Device for online monitoring pressure change in penetrating experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611965.4A CN104296917A (en) | 2014-11-04 | 2014-11-04 | Device for online monitoring pressure change in penetrating experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104296917A true CN104296917A (en) | 2015-01-21 |
Family
ID=52316747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410611965.4A Pending CN104296917A (en) | 2014-11-04 | 2014-11-04 | Device for online monitoring pressure change in penetrating experiment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332160A (en) * | 1979-04-19 | 1982-06-01 | Baragar Harold A | Penetrometer |
| CN101539563A (en) * | 2009-04-29 | 2009-09-23 | 长安大学 | High-pressure permeability consolidometer |
| CN102411044A (en) * | 2011-12-05 | 2012-04-11 | 中国石油大学(华东) | Diagenesis simulation experimental apparatus and method |
| CN102590063A (en) * | 2012-02-22 | 2012-07-18 | 吉林大学 | Test device and test method for penetration clogging of soil |
| CN204214586U (en) * | 2014-11-04 | 2015-03-18 | 西南科技大学 | The device of pressure change in a kind of on-line monitoring breakthrough experiment |
-
2014
- 2014-11-04 CN CN201410611965.4A patent/CN104296917A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332160A (en) * | 1979-04-19 | 1982-06-01 | Baragar Harold A | Penetrometer |
| CN101539563A (en) * | 2009-04-29 | 2009-09-23 | 长安大学 | High-pressure permeability consolidometer |
| CN102411044A (en) * | 2011-12-05 | 2012-04-11 | 中国石油大学(华东) | Diagenesis simulation experimental apparatus and method |
| CN102590063A (en) * | 2012-02-22 | 2012-07-18 | 吉林大学 | Test device and test method for penetration clogging of soil |
| CN204214586U (en) * | 2014-11-04 | 2015-03-18 | 西南科技大学 | The device of pressure change in a kind of on-line monitoring breakthrough experiment |
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Application publication date: 20150121 |