CN107621534A - The device of expansive force is measured under isoperibol - Google Patents
The device of expansive force is measured under isoperibol Download PDFInfo
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- CN107621534A CN107621534A CN201711068150.6A CN201711068150A CN107621534A CN 107621534 A CN107621534 A CN 107621534A CN 201711068150 A CN201711068150 A CN 201711068150A CN 107621534 A CN107621534 A CN 107621534A
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Abstract
The invention provides the device that expansive force is measured under a kind of isoperibol.Including pressure chamber, device for controlling sucking force and thermostatically-controlled equipment.Pressure chamber is connected with device for controlling sucking force.Pressure chamber includes base, ring specimen room, annular cover plate, piston, dynamometer top plate, dynamometer and threaded rod.Device for controlling sucking force includes air circulation pump, saturated salt solution container and transition container, and is connected successively using conduit.Thermostatically-controlled equipment includes casing, heater, refrigerating plant, temperature controller, temperature sensor, agitating device, display device and supply unit.The device of the present invention is compared with the device of general measure expansive force, using heating and refrigerating plant, the temperature of soil sample in pressure chamber can be accurately controlled, temperature in controlled suction control device inside saturated salt solution container and transition container, realize the expansive force of soil sample under the conditions of measure different temperatures and suction；The apparatus structure is simple, easy to operate, and cost is low.
Description
Technical field
The present invention relates to the device that expansive force is measured under Geotechnical Engineering field, more particularly to a kind of isoperibol.
Background technology
Swelled ground is widely distributed, and mechanical property is complicated, causes swelled ground area Geotechnical Engineering disaster to take place frequently.Swelled ground has
The characteristic of water-swellable, dehydration shrinkage, when limiting soil deformation, expansive force will be produced in swelled ground slaking process.Expansive force
It is one of important indicator for evaluating soil capability.Therefore, how expansive force of the accurate measurement soil body under unsaturated state has
Very important meaning.For same soil sample, the expansive force size of swelled ground is related to temperature and suction.It is currently used for measuring
The experimental rig of expansive force uses relative humidity method controlled suction more under unsaturated state.It is molten for the saturated salt of given type
Liquid, the rh value of its superjacent air are related to temperature.Therefore, the measurement for the expansive force of unsaturated state controls
Temperature is vital.
However, only include heater in expansive force tester for testing of the prior art, without refrigerating plant, because
This can not test the constant temperature effect of active.
The content of the invention
The embodiment provides the device that expansive force is measured under a kind of isoperibol, and pressure is accurately controlled to realize
The temperature of soil sample in power chamber.
To achieve these goals, this invention takes following technical scheme.
The device of expansive force is measured under a kind of isoperibol, including：Pressure chamber, device for controlling sucking force and thermostatic control dress
Put, the pressure chamber is connected with the device for controlling sucking force, and the pressure chamber and the part device for controlling sucking force are placed in
In the storage tank of the thermostatically-controlled equipment.
Further, the pressure chamber includes base, ring specimen room, annular cover plate, piston, dynamometer top plate, survey
Power meter and threaded rod.
Further, the base and the internal piston leave two and cross gas path, and apertura lateralis fills with suction control
Connection is put, the top surface of the base leaves two concentric circular grooves, placed respectively from inside to outside in the concentric circular grooves
The permeable stone of sample bottom surface and ring specimen room, the top surface of the permeable stone flush with the top surface of the base, the ring cover
Plate is positioned over the top surface of the ring specimen room, and the piston is embedded in the ring specimen room, the lower end of the piston and institute
The permeable stone contact in ring specimen ceiling face is stated, the top surface of the dynamometer is consolidated with the dynamometer top board undersurface by bolt
Fixed, the dynamometer is placed on piston.
Further, six circular holes, the center of circle institute of six circular holes are all left on the base and the annular cover plate
It is concentric circles in the circular outward flange with base and cover plate；The ring specimen room is hollow structure, is placed on the base；
The O-ring to seal is placed in the annular groove that the bottom surface of the ring specimen room and the top surface of the base stay；It is described
The top surface of annular cover plate is fixed by nut and the threaded rod, plays a part of fixed sample chamber.
Further, the lower end outside of the piston leaves a circular groove, and sealing has been placed in the circular groove and has been made
O-ring；Six circular holes are left on the top plate of the dynamometer, the shape of six circular holes and position and six on base
Circular hole it is consistent, circular hole on the top plate of the dynamometer passes through threaded rod and the circular hole on the annular cover plate, the base
It is connected；The top surface of the dynamometer top plate is fixed by nut and the threaded rod, and plays a part of fixed top plate.
Further, the device for controlling sucking force includes air circulation pump, saturated salt solution container and transition container, utilizes
Conduit successively connects the air circulation pump, the saturated salt solution container and the transition container, the air circulation pump
The other end be connected by aperture of the Y-type three way type joint respectively with the base in the pressure chamber and piston side, the mistake
The other end for crossing container is connected with the base of the pressure chamber and the aperture of piston opposite side respectively by Y-type three way type joint,
So as to form closed air circulation loop.
Further, the pressure chamber, the saturated salt solution container and the transition container are placed in the constant temperature
In the storage tank of control device；The thermostatically-controlled equipment includes casing, heater, refrigerating plant, temperature controller, temperature
Sensor, agitating device, display device and supply unit, the casing include cabinet shell, heat-insulation layer, inner bag, heating chamber, appearance
Groove and case lid are put, the heater is placed in the heating chamber, and the heating chamber is located on the inner bag of the bottom half,
The refrigerating plant is arranged on the left and right sides of the casing, and the temperature sensor is arranged in the casing, the stirring
Device includes motor and is arranged on the propeller of box inside bottom, and the display device and the supply unit are positioned over water-bath
Outside case.
Further, the heat-insulation layer of the casing uses polyethylene warming plate, the inner bag and storage tank of the casing
Use aluminium sheet, add running water between box liner and storage tank during use, is full of conduction oil, the casing in the heating chamber
Heating chamber use soft metal conductive structure.
Further, the refrigerating plant includes the cool guiding block, semiconductor chilling plate, fin being arranged on the casing
And radiator fan, the temperature sensor are arranged between inner bag and the storage tank of the casing, the agitating device is set
In the inside bottom of the casing, for water body in circulator bath.
Further, the display device and the supply unit are positioned over outside the water bath, the heater, institute
State cooling device with the temperature controller to be connected, the temperature controller and the temperature controller temperature sensor, power supply
Device, heater, refrigerating plant, agitating device are connected with display device, wherein the temperature controller passes through I/O ports point
It is not connected with the heater and the cooling device, the temperature controller controls water between the box liner and storage tank
Temperature.
The device of the embodiment of the present invention is surveyed with conventional it can be seen from the technical scheme provided by embodiments of the invention described above
The device of amount expansive force is compared, and using heating and refrigerating plant, is accurately controlled the temperature of soil sample in pressure chamber, accurate to control
Temperature in device for controlling sucking force processed inside saturated salt solution container and transition container, realize measure different temperatures and suction bar
The expansive force of soil sample under part；The apparatus structure of the embodiment of the present invention is simple, easy to operate, and cost is low.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other
Accompanying drawing.
Fig. 1 is the structural representation for the device that expansive force is measured under a kind of isoperibol provided in an embodiment of the present invention.
Fig. 2 is the principle schematic that a kind of temperature control provided in an embodiment of the present invention is implemented.
Fig. 3 is a kind of structural representation of temperature controller provided in an embodiment of the present invention.
Wherein：
1 --- base
2 --- sample chamber
3 --- annular cover plate
4 --- piston
5 --- dynamometer top plate
6 --- dynamometer
7 --- threaded rod
8 --- cross gas path
9 --- permeable stone
10 --- groove
11 --- O-ring
12 --- air circulation pump
13 --- saturated salt solution container
14 --- transition container
15 --- conduit
16 --- storage tank
17 --- cabinet shell
18 --- heat-insulation layer
19 --- inner bag
20 --- heating chamber
21 --- cool guiding block
22 --- semiconductor chilling plate
23 --- fin
24 --- radiator fan
25 --- temperature sensor
26 --- agitating device.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is individual ", " described " and "the" may also comprise plural form.It is to be further understood that what is used in the specification of the present invention arranges
Diction " comprising " refer to the feature, integer, step, operation, element and/or component be present, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their groups.It should be understood that when we claim member
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " can include wireless connection or coupling.Wording used herein
"and/or" includes any cell of one or more associated list items and all combined.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) with the general understanding identical meaning with the those of ordinary skill in art of the present invention.Should also
Understand, those terms defined in such as general dictionary, which should be understood that, to be had and the meaning in the context of prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the implication of overly formal be explained.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with accompanying drawing
Explanation, and each embodiment does not form the restriction to the embodiment of the present invention.
The embodiment of the present invention in order to overcome it is existing measurement expansion power apparatus above-mentioned deficiency, there is provided one kind include heater
With the device of the measurement expansive force of refrigerating plant, the device can be used for the expansion row of unsaturated soil under research condition of different temperatures
For.
Structural representation such as Fig. 1 institutes of the device of expansive force are measured under a kind of isoperibol provided in an embodiment of the present invention
Show, including：Pressure chamber, device for controlling sucking force and thermostatically-controlled equipment.Pressure chamber is connected with device for controlling sucking force, pressure chamber
Room and part device for controlling sucking force are placed in the storage tank of thermostatically-controlled equipment.Pressure chamber's combination is implemented：Pressure chamber includes
Base -1, ring specimen room -2, annular cover plate -3, piston -4, dynamometer top plate -5, dynamometer -6 and threaded rod -7.Base and
Internal piston leaves two and crosses gas path -8, and the apertura lateralis of its center base and piston is connected with device for controlling sucking force；Base top
Two concentric circular grooves are left in face, and diameter is respectively 50mm and 74mm, places the permeable of sample bottom surface respectively from inside to outside
Stone -9 and ring specimen room -2, the height and diameter of permeable stone are respectively 5mm and 50mm, the top surface of permeable stone and the top surface of base
Flush；Six a diameter of 10mm circular hole is left on base, round diameter where the center of circle of six circular holes is 90mm, with base -1
Outward flange is concentric circles；Ring specimen room -2 is annular hollow structure, and inner and outer diameter is 50mm and 74mm respectively, is placed in base -1
On；The bottom surface of ring specimen room -2 and the top surface of base -1 are respectively kept with annular groove -10, the center line of annular groove -10 it is straight
Footpath is 60mm, and annular groove -10 is used to place the O-ring to seal；Annular cover plate -3 is positioned over ring specimen room -2
A circular groove is left in top surface, the bottom surface of cover plate -3, a diameter of 74mm, and six on six circular holes, with base are left on cover plate
Individual circular hole size and position consistency, the circular hole on cover plate are connected with the circular hole on base by threaded rod -7.
The top surface of annular cover plate -3 is fixed by nut and threaded rod -7, and plays a part of fixed sample chamber；Piston -4
In sample chamber -2, the lower end of piston -4 contacts with the permeable stone -9 of sample top surface；A circle is left on the outside of piston
Groove, the circular groove are used to place the O-ring -11 to seal；The top surface of dynamometer -6 and the bottom of dynamometer top plate -5
Face is bolted, and dynamometer -6 is placed on piston -4；Six circular holes, hole shape and position are left on dynamometer top plate -5
Put consistent with base -1, circular hole on dynamometer top plate -5 passes through threaded rod -7 and the circle on annular cover plate -3, base -1
Hole is connected；The top surface of dynamometer top plate -5 is fixed by nut and threaded rod -7, and plays a part of fixed top plate -5.
Suction control is implemented：With reference to figure 1, device for controlling sucking force includes air circulation pump -12, saturated salt solution container -13
With transition container -14.Using conduit -15 by the gas outlet of air circulation pump, saturated salt solution container and transition container by leading
Pipe is sequentially connected in series；The gas outlet of transition container is passed through into conduit and the base -1 with pressure chamber and the work respectively of Y-type three way type joint
The aperture of -4 sides of plug is connected；By the air inlet of air circulation pump by conduit and Y-type three way type joint respectively with pressure chamber
Base -1 is connected with the aperture of the opposite side of piston -4, forms closed air circulation loop；Sample bottom surface and two phases of top surface
To the circulation canal of humidity gas, the equilibration time of sample and target control suction is shortened.
Fig. 2 is the principle schematic that a kind of temperature control provided in an embodiment of the present invention is implemented, and Fig. 3 is the embodiment of the present invention
A kind of structural representation of the temperature controller provided.With reference to figure 2, pressure chamber, saturated salt solution container and transition container are equal
It is placed in the storage tank -16 of thermostatically-controlled equipment；Thermostatically-controlled equipment includes casing, heater, refrigerating plant, temperature control
Device, temperature sensor, agitating device, display device and supply unit.Casing include cabinet shell -17, heat-insulation layer -18, inner bag -
19th, heating chamber -20 and storage tank -16.Cabinet insulation layer -18 uses polyethylene warming plate.The inner bag -19 of casing and accommodating
Groove -16 uses aluminium sheet, adds appropriate running water between the inner bag and storage tank of casing during use.Heater is placed in heating chamber
In, heating chamber is located on bottom half.The inside of heating chamber -20 is provided with electrical heating wire, is full of conduction oil, heating chamber in heating chamber
Using soft metal conductive structure.
Refrigerating plant be arranged on casing the left and right sides, refrigerating plant include be arranged on casing on cool guiding block -21, partly lead
Body cooling piece -22, fin -23, radiator fan -24.Temperature sensor -25 is arranged on box liner -19 and storage tank -16
Between.Agitating device -26 is arranged on box inside bottom, for water body in recirculated water bath cabinet, makes uniformity of temperature profile in water bath.
Display device and supply unit are positioned over outside casing.Heater, cooling device are connected with temperature controller, temperature controller control
The temperature of water bath processed, temperature control scope are 10-90 DEG C, and precision is ± 0.5 DEG C.Temperature controller fills with temperature sensor, power supply
Put, heater, refrigerating plant, agitating device are connected with display device, wherein temperature controller by I/O ports respectively with adding
Thermal is connected with cooling device.
In summary, the device of the embodiment of the present invention is compared with the device of general measure expansive force, using heating and refrigeration
Device, can accurately control the temperature of soil sample in pressure chamber, saturated salt solution container and mistake in controlled suction control device
The temperature crossed inside container, realize the expansive force of soil sample under the conditions of measure different temperatures and suction；The dress of the embodiment of the present invention
Put simple in construction, easy to operate, cost is low.
The expansive force of the soil body, can actively control pressure under the measurable different temperatures of device and suction of the embodiment of the present invention
The temperature of chamber interior, the temperature inside device for controlling sucking force container, cheap, occupied space can be actively controlled
It is small, it can be directly placed on testing stand, partial component is detachable, simple structure, is easily assembled to, easy to operate.
One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that：The part in device in embodiment can describe to divide according to embodiment
It is distributed in the device of embodiment, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.On
The part for stating embodiment can be merged into a part, can also be further split into multiple subassemblies.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Especially for device or
For system embodiment, because it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to method
The part explanation of embodiment.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates can be or may not be it is physically separate, can be as the part that unit is shown or
Person may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can root
Factually border needs to select some or all of module therein realize the purpose of this embodiment scheme.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
1. the device of expansive force is measured under a kind of isoperibol, it is characterised in that including：Pressure chamber, device for controlling sucking force and
Thermostatically-controlled equipment, the pressure chamber are connected with the device for controlling sucking force, the suction control of the pressure chamber and part
Device processed is placed in the storage tank of the thermostatically-controlled equipment.
2. device according to claim 1, it is characterised in that the pressure chamber includes base, ring specimen room, annular
Cover plate, piston, dynamometer top plate, dynamometer and threaded rod.
3. device according to claim 2, it is characterised in that the base and the internal piston leave two and cross gas
Path, apertura lateralis are connected with device for controlling sucking force, and the top surface of the base leaves two concentric circular grooves, the circular concentric
Place permeable stone and the ring specimen room of sample bottom surface, the top surface of the permeable stone and the base in groove respectively from inside to outside
Top surface flush, the annular cover plate is positioned over the top surface of the ring specimen room, and the piston is embedded in the ring specimen room
In, the lower end of the piston contacts with the permeable stone in the ring specimen ceiling face, the top surface of the dynamometer and the dynamometry
Meter top board undersurface is bolted, and the dynamometer is placed on piston.
4. device according to claim 3, it is characterised in that six circles are all left on the base and the annular cover plate
Hole, the circular outward flange with base and cover plate where the center of circle of six circular holes is concentric circles；During the ring specimen room is
Hollow structure, it is placed on the base；Put in the annular groove that the bottom surface of the ring specimen room and the top surface of the base stay
Put the O-ring to seal；The top surface of the annular cover plate is fixed by nut and the threaded rod, plays fixed sample chamber
Effect.
5. device according to claim 3, it is characterised in that the lower end outside of the piston leaves a circular groove,
The O-ring to seal is placed in the circular groove；Six circular holes are left on the top plate of the dynamometer, six circular holes
Shape and position are consistent with six circular holes on base, and the circular hole on the top plate of the dynamometer passes through threaded rod and the ring
Circular hole on shape cover plate, the base is connected；The top surface of the dynamometer top plate is fixed by nut and the threaded rod, and is risen
To the effect of fixed top plate.
6. device according to claim 1, it is characterised in that the device for controlling sucking force includes air circulation pump, saturation
Salting liquid container and transition container, using conduit successively by the air circulation pump, the saturated salt solution container and the mistake
Cross container series connection, the other end of the air circulation pump by Y-type three way type joint respectively with the base in the pressure chamber and
The aperture of piston side is connected, and the other end of the transition container passes through the Y-type three way type joint bottom with the pressure chamber respectively
Seat is connected with the aperture of piston opposite side, so as to form closed air circulation loop.
7. device according to claim 1, it is characterised in that the pressure chamber, the saturated salt solution container and institute
Transition container is stated to be placed in the storage tank of the thermostatically-controlled equipment；The thermostatically-controlled equipment include casing, heater,
Refrigerating plant, temperature controller, temperature sensor, agitating device, display device and supply unit, the casing are included outside casing
Shell, heat-insulation layer, inner bag, heating chamber, storage tank and case lid, the heater are placed in the heating chamber, the heating chamber position
On the inner bag of the bottom half, the refrigerating plant is arranged on the left and right sides of the casing, the temperature sensor
In the casing, the agitating device includes motor and is arranged on the propeller of box inside bottom, the display dress
Put and be positioned over the supply unit outside water bath.
8. device according to claim 7, it is characterised in that the heat-insulation layer of the casing is incubated using polyethylene
Plate, the inner bag and storage tank of the casing use aluminium sheet, add running water during use between box liner and storage tank, it is described plus
Hot intracavitary is full of conduction oil, and the heating chamber of the casing uses soft metal conductive structure.
9. device according to claim 7, it is characterised in that the refrigerating plant includes being arranged on leading on the casing
Cold piece, semiconductor chilling plate, fin and radiator fan, the temperature sensor are arranged on the inner bag of the casing and the appearance
Between putting groove, the agitating device is arranged on the inside bottom of the casing, for water body in circulator bath.
10. device according to claim 7, it is characterised in that the display device and the supply unit are positioned over institute
State outside water bath, the heater, the cooling device are connected with the temperature controller, the temperature controller with it is described
Temperature controller temperature sensor, supply unit, heater, refrigerating plant, agitating device are connected with display device, wherein institute
State temperature controller by I/O ports respectively with the heater and the cooling device to be connected, the temperature controller control
Make the temperature of water between the box liner and storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068150.6A CN107621534A (en) | 2017-11-03 | 2017-11-03 | The device of expansive force is measured under isoperibol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068150.6A CN107621534A (en) | 2017-11-03 | 2017-11-03 | The device of expansive force is measured under isoperibol |
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| Publication Number | Publication Date |
|---|---|
| CN107621534A true CN107621534A (en) | 2018-01-23 |
Family
ID=61093458
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711068150.6A Pending CN107621534A (en) | 2017-11-03 | 2017-11-03 | The device of expansive force is measured under isoperibol |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141720A (en) * | 2018-10-18 | 2019-01-04 | 大连理工大学 | A kind of device measuring clay swell power |
| CN110095498A (en) * | 2019-04-10 | 2019-08-06 | 浙江华电器材检测研究所有限公司 | A kind of method of detection cable conduit heat dissipation performance |
| CN110749644A (en) * | 2019-12-05 | 2020-02-04 | 苏州冠德能源科技有限公司 | Shale free oil analysis device |
| CN116087470A (en) * | 2023-01-18 | 2023-05-09 | 青岛理工大学 | XRD-based soil body expansion pressure testing device under salinity field change |
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| JPH0560744A (en) * | 1991-09-04 | 1993-03-12 | Takenaka Komuten Co Ltd | Laboratory testing device for finding horizontal stress of in situ ground by using in situ frozen ground sample |
| CN2919253Y (en) * | 2006-07-14 | 2007-07-04 | 长安大学 | Portable lever low-temperature concretion meter |
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| CN102495199A (en) * | 2011-12-09 | 2012-06-13 | 南京大学 | Temperature and suction control high-pressure consolidometer |
| CN102854055A (en) * | 2012-08-14 | 2013-01-02 | 同济大学 | Multi-stage temperature-control unsaturated-soil creepmeter |
| CN105372130A (en) * | 2015-12-08 | 2016-03-02 | 桂林理工大学 | Temperature control-type high suction unsaturated soil consolidation apparatus |
| CN205182771U (en) * | 2015-11-12 | 2016-04-27 | 山东科技大学 | Intelligence water bath with thermostatic control device |
| CN207742196U (en) * | 2017-11-03 | 2018-08-17 | 北京交通大学 | The device of expansive force is measured under isoperibol |
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| JPH0560744A (en) * | 1991-09-04 | 1993-03-12 | Takenaka Komuten Co Ltd | Laboratory testing device for finding horizontal stress of in situ ground by using in situ frozen ground sample |
| CN2919253Y (en) * | 2006-07-14 | 2007-07-04 | 长安大学 | Portable lever low-temperature concretion meter |
| CN102323393A (en) * | 2011-08-22 | 2012-01-18 | 同济大学 | Double-lever high-temperature, high-pressure and unsaturated consolidometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109141720A (en) * | 2018-10-18 | 2019-01-04 | 大连理工大学 | A kind of device measuring clay swell power |
| CN110095498A (en) * | 2019-04-10 | 2019-08-06 | 浙江华电器材检测研究所有限公司 | A kind of method of detection cable conduit heat dissipation performance |
| CN110095498B (en) * | 2019-04-10 | 2024-03-29 | 浙江华电器材检测研究所有限公司 | Method for detecting heat dissipation performance of cable duct |
| CN110749644A (en) * | 2019-12-05 | 2020-02-04 | 苏州冠德能源科技有限公司 | Shale free oil analysis device |
| CN116087470A (en) * | 2023-01-18 | 2023-05-09 | 青岛理工大学 | XRD-based soil body expansion pressure testing device under salinity field change |
| CN116087470B (en) * | 2023-01-18 | 2024-05-31 | 青岛理工大学 | XRD-based soil body expansion pressure testing device under salinity field change |
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