CN204330642U - A kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content - Google Patents
A kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content Download PDFInfo
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- CN204330642U CN204330642U CN201520035706.1U CN201520035706U CN204330642U CN 204330642 U CN204330642 U CN 204330642U CN 201520035706 U CN201520035706 U CN 201520035706U CN 204330642 U CN204330642 U CN 204330642U
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Simulate a determinator for actual subgrade soil freezing temperature and unfrozen water content, relate to the temperature measuring field of subgrade soil unfrozen water content and the soil body.The utility model is that the device of situation of freezing in order to solve the actual subgrade soil of existing simulation cannot simulate the actual Water Transport process freezing the soil body, can not accomplish, to the accurate control of temperature, to realize the gradual change of temperature, cause the problem that measuring accuracy is low.There is specimen appliance the utility model constant temperature oven inside, specimen appliance surrounding has insulating layer and thermal insulative board from inside to outside, test specimen top and bottom establish coil pipe and ethylene glycol solvent as refrigeration plant respectively, test specimen and top and all have heat conductive pad between bottom coil pipe and ethylene glycol solvent, each coil pipe two ends connect temperature detect switch (TDS) one end and cold one end respectively, the temperature detect switch (TDS) other end connects the other end of cold, data collecting instrument gathers the temperature signal of 5 temperature sensors simultaneously, the temperature information that Computer display data collecting instrument gathers.It is for simulating freezing soil temperature.
Description
Technical field
The utility model relate to simulation actual subgrade soil freeze do not freeze aquametry device.Belong to the temperature measuring field of subgrade soil unfrozen water content and the soil body.
Background technology
Because the freezing temperature of China's subgrade soil is variant, condition difference between various soil mass medium is larger, the situation of freezing getting the various soil body and the liquid water content do not freezed comparatively complicated, have the thermometric experimental provision of roadbed freezing soil at present, be characterized in accurately controlling freezing soil temperature, the gradual change of roadbed freezing soil temperature with the degree of depth can not be simulated, cause measuring accuracy low; The actual Water Transport process freezing the soil body can not be simulated, there are differences with the measuring accuracy of actual subgrade soil, can not the truth of complete reaction freezing soil.
Utility model content
The utility model is that the device of situation of freezing in order to solve the actual subgrade soil of existing simulation cannot simulate the actual Water Transport process freezing the soil body, can not accomplish, to the accurate control of temperature, to realize the gradual change of temperature, cause the problem that measuring accuracy is low.A kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content is now provided.
A kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content, it comprises constant temperature oven, a cold, No. two cold, a temperature detect switch (TDS), No. two temperature detect switch (TDS)s, specimen appliance, thermal insulative board, insulating layer, 5 temperature sensors and data acquisition system (DAS)s
The inside of described constant temperature oven is provided with specimen appliance, and the surrounding of specimen appliance is provided with insulating layer, and the surrounding of insulating layer is provided with thermal insulative board,
Described specimen appliance comprises test specimen, a dialer pipe, two dialer pipes, a heat conductive pad, No. two heat conductive pads, an ethylene glycol solvent and No. two ethylene glycol solvents,
The top of test specimen is provided with a dialer pipe and an ethylene glycol solvent as refrigeration plant, the bottom of test specimen is provided with two dialer pipes and No. two ethylene glycol solvents as refrigeration plant, test specimen and be provided with a heat conductive pad between a dialer pipe and an ethylene glycol solvent, test specimen and be provided with No. two heat conductive pads between two dialer pipes and No. two ethylene glycol solvents
One end of one dialer pipe connects one end of a temperature detect switch (TDS), and the other end of a temperature detect switch (TDS) connects one end of a cold, and the other end of a cold connects the other end of a dialer pipe,
One end of two dialer pipes connects one end of No. two temperature detect switch (TDS)s, and the other end of No. two temperature detect switch (TDS)s connects one end of No. two cold, and the other end of No. two cold connects the other end of two dialer pipes,
Data acquisition system (DAS) comprises data collecting instrument and computing machine,
In test specimen, longitudinally every 2cm, a temperature sensor is installed, altogether 5 temperature sensors are installed, the temperature sensor signal input end of the equal connection data Acquisition Instrument of temperature sensor signal output terminal of each temperature sensor, the collection signal output terminal of data collecting instrument connects the collection signal input end of computing machine.
A kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content, it also comprises 3 soil mass water sub sensors, 3 soil mass water sub sensors are respectively inserted in the position, upper, middle and lower of described test specimen, the moisture responsive signal input part of the equal connection data Acquisition Instrument of moisture responsive signal output part of 3 soil mass water sub sensors.
Beneficial effect of the present invention is: by being provided with a dialer pipe and an ethylene glycol solvent at the top of test specimen as refrigeration plant, two dialer pipes and No. two ethylene glycol solvents are provided with as refrigeration plant in the bottom of test specimen, and regulate the different temperature difference that ensure that test specimen two ends of upper and lower two ends cryogenic temperature respectively by a temperature detect switch (TDS) and No. two temperature switches, again because the soil body is uniformly transfer heat thus ensure to make test specimen inside occur the gradual change of temperature, simulate the migration situation of moisture in temperature under the frozen state of actual subgrade soil and the soil body; Make measuring accuracy high, the setting of temperature detect switch (TDS) enables equipment realize automatically maintaining design temperature, realize robotization, pass through data acquisition system (DAS), temperature sensor, soil mass water sub sensor can not freeze the content of water and the temperature variation of the soil body in the Real-Time Monitoring test specimen soil body, can record unfrozen water content and the soil temperature of soil body diverse location in time, have researching value.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of simulating the determinator of actual subgrade soil freezing temperature and unfrozen water content described in embodiment one,
Fig. 2 is the partial enlarged drawing of Fig. 1,
Fig. 3 is the vertical view of Fig. 1.
Embodiment
Embodiment one: see figures.1.and.2 and illustrate present embodiment, a kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content described in present embodiment, it comprises constant temperature oven, cold 1-1, No. two cold 1-2, temperature detect switch (TDS) 2-1, No. two temperature detect switch (TDS) 2-2, specimen appliance, thermal insulative board 6, insulating layer 7,5 temperature sensors 8 and data acquisition system (DAS)s
The inside of described constant temperature oven is provided with specimen appliance, and the surrounding of specimen appliance is provided with insulating layer 7, and the surrounding of insulating layer 7 is provided with thermal insulative board 6,
Described specimen appliance comprises test specimen, a dialer pipe 3-1, two dialer pipe 3-2, a heat conductive pad 4-1, No. two heat conductive pad 4-2, ethylene glycol solvent 5-1 and No. two ethylene glycol solvent 5-2,
The top of test specimen is provided with a dialer pipe 3-1 and No. one ethylene glycol solvent 5-1 as refrigeration plant, the bottom of test specimen is provided with two dialer pipe 3-2 and No. two ethylene glycol solvent 5-2 as refrigeration plant, a heat conductive pad 4-1 is provided with between test specimen and a dialer pipe 3-1 and No. one ethylene glycol solvent 5-1, No. two heat conductive pad 4-2 are provided with between test specimen and two dialer pipe 3-2 and No. two ethylene glycol solvent 5-2
One end of one dialer pipe 3-1 connects one end of a temperature detect switch (TDS) 2-1, and the other end of a temperature detect switch (TDS) 2-1 connects one end of a cold 1-1, and the other end of a cold 1-1 connects the other end of a dialer pipe 3-1,
One end of two dialer pipe 3-2 connects one end of No. two temperature detect switch (TDS) 2-2, and the other end of No. two temperature detect switch (TDS) 2-2 connects one end of No. two cold 1-2, and the other end of No. two cold 1-2 connects the other end of two dialer pipe 3-2,
Data acquisition system (DAS) comprises data collecting instrument 9 and computing machine 10,
In test specimen, longitudinally every 2cm, a temperature sensor 8 is installed, altogether 5 temperature sensors 8 are installed, the temperature sensor signal input end of the equal connection data Acquisition Instrument 9 of temperature sensor signal output terminal of each temperature sensor 8, the collection signal output terminal of data collecting instrument 9 connects the collection signal input end of computing machine 10.
In present embodiment, by being provided with a dialer pipe and an ethylene glycol solvent at the top of test specimen as refrigeration plant, two dialer pipes and No. two ethylene glycol solvents are provided with as refrigeration plant in the bottom of test specimen, and regulate the different temperature difference that ensure that test specimen two ends of upper and lower two ends cryogenic temperature respectively by a temperature detect switch (TDS) and No. two temperature switches, again because the soil body is uniformly transfer heat thus ensure to make test specimen inside occur the gradual change of temperature, simulate the temperature under the frozen state of actual subgrade soil, adopt and longitudinally five temperature sensors 8 are installed altogether to measure the temperature at soil body diverse location place every 2cm in test specimen.
In present embodiment, insulating layer 7 adopts the thick polyurethane PU gas-development agent of 6cm to fill, and the benzene plate that thermal insulative board 6 adopts 2cm thick, heat conductive pad 4 adopts steel plate to make, and reaches predetermined temperature required time for excellence conductor can shorten the soil body.Upper and lower two refrigeration plants be made up of coil pipe and ethylene glycol solvent when freezing, be arranged to different freezing temperatures, thus the transmission making examination carry out heat at two kinds of temperature produce a desired effect by temperature detect switch (TDS) and cold.
Embodiment two: present embodiment is described further a kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content described in embodiment one, in present embodiment, it also comprises 3 soil mass water sub sensors 12, the moisture responsive signal input part of the equal connection data Acquisition Instrument 9 of moisture responsive signal output part of 3 soil mass water sub sensors, 12,3 soil mass water sub sensors 12 is respectively inserted in the position, upper, middle and lower of described test specimen.
In present embodiment, what adopt 3 soil mass water sub sensor Simultaneously test soil body diverse location places freezes soil body unfrozen water content.
Embodiment three: illustrate present embodiment with reference to Fig. 3, present embodiment is described further a kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content described in embodiment one, in present embodiment, the thickness of insulating layer 7 is 6cm, and the thickness of thermal insulative board 6 is 2cm.
Claims (3)
1. simulate the determinator of actual subgrade soil freezing temperature and unfrozen water content for one kind, it is characterized in that, it comprises constant temperature oven, a cold (1-1), No. two cold (1-2), a temperature detect switch (TDS) (2-1), No. two temperature detect switch (TDS)s (2-2), specimen appliance, thermal insulative board (6), insulating layer (7), 5 temperature sensors (8) and data acquisition system (DAS)s
The inside of described constant temperature oven is provided with specimen appliance, and the surrounding of specimen appliance is provided with insulating layer (7), and the surrounding of insulating layer (7) is provided with thermal insulative board (6),
Described specimen appliance comprises test specimen, a dialer pipe (3-1), two dialer pipes (3-2), a heat conductive pad (4-1), No. two heat conductive pads (4-2), an ethylene glycol solvent (5-1) and No. two ethylene glycol solvents (5-2)
The top of test specimen is provided with a dialer pipe (3-1) and an ethylene glycol solvent (5-1) as refrigeration plant, the bottom of test specimen is provided with two dialer pipes (3-2) and No. two ethylene glycol solvents (5-2) as refrigeration plant, test specimen and be provided with a heat conductive pad (4-1) between a dialer pipe (3-1) and an ethylene glycol solvent (5-1), test specimen and be provided with No. two heat conductive pads (4-2) between two dialer pipes (3-2) and No. two ethylene glycol solvents (5-2)
One end of one dialer pipe (3-1) connects one end of a temperature detect switch (TDS) (2-1), the other end of a temperature detect switch (TDS) (2-1) connects one end of a cold (1-1), the other end of a cold (1-1) connects the other end of a dialer pipe (3-1)
One end of two dialer pipes (3-2) connects one end of No. two temperature detect switch (TDS)s (2-2), the other end of No. two temperature detect switch (TDS)s (2-2) connects one end of No. two cold (1-2), the other end of No. two cold (1-2) connects the other end of two dialer pipes (3-2)
Data acquisition system (DAS) comprises data collecting instrument (9) and computing machine (10),
In test specimen, longitudinally every 2cm, a temperature sensor (8) is installed, altogether 5 temperature sensors (8) are installed, the temperature sensor signal input end of the equal connection data Acquisition Instrument (9) of temperature sensor signal output terminal of each temperature sensor (8), the collection signal output terminal of data collecting instrument (9) connects the collection signal input end of computing machine (10).
2. a kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content according to claim 1, it is characterized in that, it also comprises 3 soil mass water sub sensors (12), 3 soil mass water sub sensors (12) are respectively inserted in the position, upper, middle and lower of described test specimen, the moisture responsive signal input part of the equal connection data Acquisition Instrument (9) of moisture responsive signal output part of 3 soil mass water sub sensors (12).
3. a kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content according to claim 1, is characterized in that, the thickness of insulating layer (7) is 6cm, and the thickness of thermal insulative board (6) is 2cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520035706.1U CN204330642U (en) | 2015-01-19 | 2015-01-19 | A kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content |
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| CN201520035706.1U CN204330642U (en) | 2015-01-19 | 2015-01-19 | A kind of determinator of simulating actual subgrade soil freezing temperature and unfrozen water content |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973746A (en) * | 2016-01-25 | 2016-09-28 | 天津城建大学 | Apparatus for testing unfrozen water content of frozen soil, and method thereof |
| CN106645261A (en) * | 2017-03-17 | 2017-05-10 | 安徽理工大学 | Large-sized multifunctional artificial freezing platform |
| CN118191274A (en) * | 2024-05-14 | 2024-06-14 | 长江水利委员会长江科学院 | Method and device for measuring unfrozen water content of soil and related equipment |
-
2015
- 2015-01-19 CN CN201520035706.1U patent/CN204330642U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973746A (en) * | 2016-01-25 | 2016-09-28 | 天津城建大学 | Apparatus for testing unfrozen water content of frozen soil, and method thereof |
| CN106645261A (en) * | 2017-03-17 | 2017-05-10 | 安徽理工大学 | Large-sized multifunctional artificial freezing platform |
| CN118191274A (en) * | 2024-05-14 | 2024-06-14 | 长江水利委员会长江科学院 | Method and device for measuring unfrozen water content of soil and related equipment |
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