CN109298161A - A kind of test device of soil sample internal water branch and temperature field - Google Patents
A kind of test device of soil sample internal water branch and temperature field Download PDFInfo
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- CN109298161A CN109298161A CN201811305124.5A CN201811305124A CN109298161A CN 109298161 A CN109298161 A CN 109298161A CN 201811305124 A CN201811305124 A CN 201811305124A CN 109298161 A CN109298161 A CN 109298161A
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Abstract
The invention discloses the test devices of a kind of soil sample internal water branch and temperature field, its high temperature bath device (2) freezes liquid box by the high temperature at the top of pipeline connection sample box (3), and low temperature water bath device (1) is connected to the low-temperature frozen liquid box of sample box (3) bottom by pipeline；Sample is filled up in sample box (3), the sensor (4) of measurement temperature and humidity is placed in sample, the input channel of data collecting instrument (7) connects sensor (4), the control terminal of data collecting instrument (7) is connected to A.C. contactor (7) by intermediate relay (6), and A.C. contactor (7) connects on low temperature water bath device (1) power bus in parallel with high temperature bath device (2).The present invention solves the test problem of soil layer internal water branch and thermo parameters method under different temperatures gradient effect, is automatically performed test assignment, and output data when off-test, device is automatically closed, and sampled point is more, and measurement accuracy is high, convenient and efficient, time saving and energy saving.
Description
Technical field
The invention belongs to the field of test technology of civil engineering, and in particular to a kind of automatic measurement soil sample internal water branch and
The test device in temperature field.
Background technique
More and more engineerings will be built in seasonal and permanent Frozen Ground Area, the seasonal and permanent basic object of frozen soil
Reason mechanical property becomes the hot spot studied at present.In mine, shaft construction and construction of subway during, are frequently encountered high rich water ovum
The unfavorable geologies such as gravel, weak soil and mud stone, construction freezing method are the effective means for passing through poor strata, are designed in construction freezing method
It in the process must the clear basic physico-mechanical properties in stratum.It is to determine in the distribution that temperature gradient effect is lauched branch and temperature field
The key factor of the basic physico-mechanical properties of soil layer, it is therefore necessary to verify under different temperatures gradient effect soil layer internal water branch and
The regularity of distribution in temperature field.
Currently without the test device dedicated for soil layer internal water branch and temperature field under measurement different temperatures gradient.
Summary of the invention
In view of the problems of the existing technology, the technical problem to be solved by the invention is to provide a kind of soil sample internal waters
The test device of branch and temperature field, it can be automatically performed test assignment, and output data when off-test, device is automatically closed,
Sampled point is more, and measurement accuracy is high, convenient and efficient, time saving and energy saving.
It is realized the technical problem to be solved by the present invention is to technical solution in this way, it includes low temperature water-bath dress
It sets, high temperature bath device, sample box, sensor, data collecting instrument, intermediate relay and A.C. contactor, high temperature bath device
The high temperature at the top of sample box is connected to by pipeline and freezes liquid box, and low temperature water bath device is connected to the low-temperature frozen of sample box bottom by pipeline
Liquid box；Sample is filled up in sample box, the sensor for measuring temperature and humidity is placed in sample, and the input channel of data collecting instrument connects
Sensor is connect, the control terminal of data collecting instrument is connected to A.C. contactor by intermediate relay, and A.C. contactor connects in low temperature
On the water bath device power bus in parallel with high temperature bath device.
The working principle of the invention is: cryogenic freezing liquid is perfused to the low-temperature frozen liquid box of sample box bottom in low temperature water bath device
(according to the suitable freezing liquid of experimental design Scheme Choice, being typically chosen alcohol is freezing liquid), high temperature bath device is to sample box
The high temperature at top freezes liquid box and freezing liquid more higher than cryogenic freezing liquid is perfused, and the sample in sample box is filled with high and low temperature freezing liquid
Divide after carrying out heat exchange, formation temperature gradient in sample；When temperature sensor and all stable humidity sensor measurement data, number
Alarm signal when alarm (alarm signal is switching signal, and data collecting instrument is normally opened when working normally, be closed) is issued according to Acquisition Instrument,
A.C. contactor of the alarm signal by intermediate relay control external circuits, A.C. contactor cutting circuit, high temperature bath dress
It sets out of service with low temperature water bath device.
Test can test different measurement points, the temperature of different periods, humidity data, obtain sample temperature under different moments
Degree, humidity cloud atlas, analysis can obtain specimen temperature field, moisture field changes over time rule, be the basic physical mechanics examination of subsequent frozen soil
Offer theoretical direction is provided.
The solution have the advantages that: solve soil layer internal water branch and thermo parameters method under different temperatures gradient effect
Test problem, be automatically performed test assignment, output data when off-test, device is automatically closed, and sampled point is more, measurement accuracy
It is high, convenient and efficient, time saving and energy saving.
Detailed description of the invention
Detailed description of the invention of the invention is as follows:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the sample box combination assumption diagram of the present embodiment；
Fig. 3 is that the sample box in Fig. 2 splits structure chart；
Fig. 4 is the cooperation figure of cartridge body and sample box base；
Fig. 5 is the constitutional diagram of cartridge body and sample box base；
Fig. 6 is the structural schematic diagram of sample box base；
Fig. 7 is the inner-cavity structure figure that high temperature freezes liquid box and low-temperature frozen liquid box；
Fig. 8 is low temperature water bath device or high temperature bath principle of device structure chart.
In figure: 1. low temperature water bath devices；2. high temperature bath device；3. sample box；31. high temperature freezes liquid box；32. sample box
Body；321. outer hoop；33. low-temperature frozen liquid box；34. sample box base；341. boss；342. decorative cover；35. testing bracket；4. sensing
Device；5. data collecting instrument；6. intermediate relay；7. A.C. contactor；11, compressor；12, condenser；13, filter；14, it steams
Send out device；15, temperature controller；16, freeze water-circulating pump.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
As shown in Figure 1, the present invention includes low temperature water bath device 1, high temperature bath device 2, sample box 3, sensor 4, data acquisition
Instrument 5, intermediate relay 6 and A.C. contactor 7, high temperature bath device 2 freeze liquid by the high temperature that pipeline is connected to 3 top of sample box
Box, low temperature water bath device 1 are connected to the low-temperature frozen liquid box of 3 bottom of sample box by pipeline；Sample, measurement temperature are filled up in sample box 3
Degree and the sensor 4 of humidity are placed in sample, and the input channel of data collecting instrument 7 connects sensor 4, the control of data collecting instrument 7
End processed is connected to A.C. contactor 7 by intermediate relay 6, and A.C. contactor 7 connects to be filled in low temperature water bath device 1 and high temperature bath
It sets on 2 power bus in parallel.
As shown in Figures 2 and 3, sample box 3 includes that high temperature freezes liquid box 31, cartridge body 32, low-temperature frozen liquid box 33, sample box
Pedestal 34 and test bracket 35；It tests bracket 35 and supports sample box base 34, cartridge body 32 is installed on sample box base 34, it is low
Temperature freezes the bottom that liquid box 33 blocks cartridge body 32, and the drainage tube of low-temperature frozen liquid box 33 passes through sample box base 33 and holds in the palm from test
35 hollow portion of frame is stretched out, and high temperature freezes liquid box 31 and covers 32 top opening of cartridge body.
Around cartridge body 32 and top and bottom can be with covering and heat insulating heat insulation foam.
As shown in Figure 4 and Figure 5, cartridge body 32 is mounted on sample box base 34, and cartridge body 32 is by 321 He of outer hoop
At least two pieces of side plates are constituted, and side plate encloses a side of side plate around the boss 341 of 34 central part of sample box base
The tape edge that the tape edge that has interior loop-drive to extend out, another side have outer loop-drive sagging, the tape edge of each side plate circumferentially successively overlapping pair
It connects, outer hoop 321 blocks sample box lower part, middle part and top respectively, forms truss structure, is reserved with temperature sensor on side plate
With the aperture of humidity sensor wiring.Side plate is arc armoured glass plate.
32 top dimension of cartridge body is small, bottom size is big, and outer hoop 321 can penetrate at the top of side plate, and be stuck in side pressure
Plate proper site is implemented to fix.In frozen soil experiment, temperature is usually lower when due to test, and sample is linked as after freezing with sample box
One, so that it is very difficult when unloading sample, it thoroughly solves the problems, such as to unload sample, sample box assembling of the present invention using side pressure board combining structure
Convenient disassembly, it is simple that dress sample unloads sample, tests convenient and efficient.Sample box intensity is high, can sufficiently resist generating when sample freezes
Frost-heave force；Sample preparation precision is high.
As shown in figure 4, being reserved with the inlet and outlet of low-temperature frozen liquid box drainage tube, such as Fig. 6 on the boss 341 of sample box base
Shown, the bottom surface of sample box base is equipped with decorative cover 342, to be stuck on test bracket.
As shown in fig. 7, high temperature freezes liquid box or low-temperature frozen liquid box is made of box body and drainage tube, tray interior is cavity, cold
Freeze liquid to flow in the cavities；Fig. 7 a is the inner cavity that high temperature freezes liquid box, and two drainage nozzles that high temperature freezes liquid box are provided with box body
Top surface；Fig. 7 b is the inner cavity of low-temperature frozen liquid box, and the feed liquor nozzle of low-temperature frozen liquid box is located at box bottom, liquid outlet close in box body
Top surface, ensure that cryogenic freezing liquid in the box intracorporal residence time, low-temperature frozen liquid box and sample can fully heat exchange, improve energy
Measure transformation efficiency.
As shown in Figures 2 and 3, test 35 top of bracket is half collar that lower section wanes, and can be caught in sample box bottom completely
In the decorative cover 342 of seat.
As shown in figure 8, the low temperature water bath device 1 include compressor 11, condenser 12, filter 13, evaporator 14,
Temperature controller 15 and cold water circulation pump 16, freezing liquid and refrigerant reduce chilled liquid temperature in the progress heat exchange of evaporator 14；
Cold water circulation pump 16 realizes that freezing liquid recycles between low temperature water bath device 1 and low-temperature frozen liquid box 33.High temperature bath device 2 with it is low
Warm water bath apparatus is identical.
As shown in Figure 1, by low temperature water bath device 1 it is in parallel with high temperature bath device 2 after series AC contactor 7, access supply
In electric line, A.C. contactor 7 is accessed by intermediate relay 6 in the warning output end of data collecting instrument 5；2 upper end of sample box
High temperature freezes 31 drainage tube of liquid box and is connected with high temperature bath device 2, and freezing liquid enters high temperature and freezes 31 tray interior of liquid box；Sample box 2
33 drainage tube of low-temperature frozen liquid box of lower part is connected with low temperature water bath device 1, and freezing liquid enters 33 tray interior of low-temperature frozen liquid box；It is high
Temperature is frozen between liquid box 31 and low-temperature frozen liquid box 33 there are temperature difference, and the sample in sample box 2 forms required temperature gradient.Examination
Sample freezes in low temperature environment, is embedded in the temperature sensor and humidity sensor lead and data collecting instrument 5 of many places inside sample
It is connected, data collecting instrument 5 reads sample internal temperature and humidity in real time.
When temperature sensor and all stable humidity sensor measurement data, data collecting instrument 5 issues alarm signal, alarm
Signal controls the A.C. contactor 7 of external circuits by intermediate relay 6, and A.C. contactor 7 cuts off circuit, high temperature bath device
2 and low temperature water bath device 4 it is out of service.
Claims (8)
1. the test device of a kind of soil sample internal water branch and temperature field, it is characterized in that: including low temperature water bath device (1), high temperature
Water bath device (2), sample box (3), sensor (4), data collecting instrument (5), intermediate relay (6) and A.C. contactor (7) are high
Warm water bath apparatus (2) freezes liquid box by the high temperature at the top of pipeline connection sample box (3), and low temperature water bath device (1) is connected by pipeline
The low-temperature frozen liquid box of logical sample box (3) bottom；Sample is filled up in sample box (3), the sensor (4) for measuring temperature and humidity is placed in
In sample, the input channel of data collecting instrument (7) connects sensor (4), and the control terminal of data collecting instrument (7) passes through intermediate relay
Device (6) is connected to A.C. contactor (7), A.C. contactor (7) connect low temperature water bath device (1) and high temperature bath device (2) simultaneously
On the power bus of connection.
2. the test device of soil sample internal water according to claim 1 branch and temperature field, it is characterized in that: the sample box
It (3) include that high temperature freezes liquid box (31), cartridge body (32), low-temperature frozen liquid box (33), sample box base (34) and test bracket
(35)；Bracket (35) support sample box base (34) is tested, cartridge body (32) are installed on sample box base (34), low-temperature frozen liquid
Box (33) blocks the bottom of cartridge body (32), and the drainage tube of low-temperature frozen liquid box (33) passes through sample box base (33) and holds in the palm from test
Frame (35) hollow portion is stretched out, and high temperature freezes liquid box (31) and covers cartridge body (32) top opening.
3. the test device of soil sample internal water according to claim 2 branch and temperature field, it is characterized in that: the sample box
Around body (32) and top and bottom are covered with insulation cotton.
4. the test device of soil sample internal water according to claim 2 or 3 branch and temperature field, it is characterized in that: the examination
By outer hoop (321) and at least, two pieces of side plates are constituted sample box body (32), and side plate is enclosed in sample box base (34) central part
Around boss (341), the tape edge that tape edge that a side of side plate has interior loop-drive to extend out, another side have outer loop-drive sagging, respectively
Circumferentially successively overlapping docking, outer hoop (321) block sample box lower part, middle part and top, side plate to the tape edge of side plate respectively
On be reserved with the aperture of temperature sensor and humidity sensor wiring.
5. the test device of soil sample internal water according to claim 4 branch and temperature field, it is characterized in that: the sample box
Body (32) top dimension is small, bottom size is big.
6. the test device of soil sample internal water according to claim 5 branch and temperature field, it is characterized in that: the sample box
The inlet and outlet of low-temperature frozen liquid box drainage tube are reserved on the boss (341) of pedestal (34), the bottom surface of sample box base is equipped with lid
It encloses (342).
7. the test device of soil sample internal water according to claim 6 branch and temperature field, it is characterized in that: the high temperature freezes
Liquid box (31) is made of box body and drainage tube, and tray interior is cavity, and two drainage nozzles that high temperature freezes liquid box (31) open up
In box body top surface.
8. the test device of soil sample internal water according to claim 7 branch and temperature field, it is characterized in that: the low-temperature frozen
Liquid box (33) is made of box body and drainage tube, and tray interior is cavity, and the feed liquor nozzle of low-temperature frozen liquid box (33) is located at box body bottom
Face, liquid outlet are close to box body inner top surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305124.5A CN109298161A (en) | 2018-11-05 | 2018-11-05 | A kind of test device of soil sample internal water branch and temperature field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305124.5A CN109298161A (en) | 2018-11-05 | 2018-11-05 | A kind of test device of soil sample internal water branch and temperature field |
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| CN109298161A true CN109298161A (en) | 2019-02-01 |
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| CN201811305124.5A Pending CN109298161A (en) | 2018-11-05 | 2018-11-05 | A kind of test device of soil sample internal water branch and temperature field |
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Citations (8)
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|---|---|---|---|---|
| CN102520003A (en) * | 2011-11-29 | 2012-06-27 | 中国科学院寒区旱区环境与工程研究所 | Device for testing ambient-temperature gradient freezing and thawing processes |
| KR20130021894A (en) * | 2011-08-24 | 2013-03-06 | 아산엔텍 주식회사 | Simulation system for soil characteristics change |
| CN104237483A (en) * | 2013-06-07 | 2014-12-24 | 上海大学 | Soil body temperature gradient and moisture movement test device |
| CN204302276U (en) * | 2014-12-31 | 2015-04-29 | 河海大学 | Thermograde drives the experimental rig of Water Transport in lower unsaturated soil |
| CN104655823A (en) * | 2015-02-12 | 2015-05-27 | 中南大学 | Frost heaving meter |
| CN104990947A (en) * | 2015-07-22 | 2015-10-21 | 哈尔滨工业大学 | Bilateral frost-heaving test device for porous materials and testing method |
| CN205157553U (en) * | 2015-11-05 | 2016-04-13 | 西安科技大学 | Frozen soil body temperature degree moisture movement test instrument |
| CN207036827U (en) * | 2017-07-25 | 2018-02-23 | 中国科学院武汉岩土力学研究所 | A kind of jolt ramming bucket suitable for surface vibration compaction test |
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2018
- 2018-11-05 CN CN201811305124.5A patent/CN109298161A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130021894A (en) * | 2011-08-24 | 2013-03-06 | 아산엔텍 주식회사 | Simulation system for soil characteristics change |
| CN102520003A (en) * | 2011-11-29 | 2012-06-27 | 中国科学院寒区旱区环境与工程研究所 | Device for testing ambient-temperature gradient freezing and thawing processes |
| CN104237483A (en) * | 2013-06-07 | 2014-12-24 | 上海大学 | Soil body temperature gradient and moisture movement test device |
| CN204302276U (en) * | 2014-12-31 | 2015-04-29 | 河海大学 | Thermograde drives the experimental rig of Water Transport in lower unsaturated soil |
| CN104655823A (en) * | 2015-02-12 | 2015-05-27 | 中南大学 | Frost heaving meter |
| CN104990947A (en) * | 2015-07-22 | 2015-10-21 | 哈尔滨工业大学 | Bilateral frost-heaving test device for porous materials and testing method |
| CN205157553U (en) * | 2015-11-05 | 2016-04-13 | 西安科技大学 | Frozen soil body temperature degree moisture movement test instrument |
| CN207036827U (en) * | 2017-07-25 | 2018-02-23 | 中国科学院武汉岩土力学研究所 | A kind of jolt ramming bucket suitable for surface vibration compaction test |
Non-Patent Citations (1)
| Title |
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| 上海市热处理协会 编: "《实用热处理手册》", 31 January 2009 * |
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