CN106501303B - A kind of research load-thermal coefficient relationship carefully sees the device and its experimental method of mechanism - Google Patents
A kind of research load-thermal coefficient relationship carefully sees the device and its experimental method of mechanism Download PDFInfo
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- CN106501303B CN106501303B CN201610944022.2A CN201610944022A CN106501303B CN 106501303 B CN106501303 B CN 106501303B CN 201610944022 A CN201610944022 A CN 201610944022A CN 106501303 B CN106501303 B CN 106501303B
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- ring mould
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
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Abstract
The invention discloses devices and its experimental method that a kind of research load-thermal coefficient relationship carefully sees mechanism.The device is made of ring mould and coaxial transition device, pressure plate.Ring mould and coaxial transition device are transparent organic glass material, and ring mould inner surface is equipped with red graduation mark.Miniature webcam is laid in the mold of ring mould side, coaxial transition device side and coaxial transition device and the upper and lower interface of ring mould.When experiment, sample is put into ring mould and coaxial transition device, film coefficient of heat transfer probe is laid on the interface up and down of ring mould and coaxial transition device, it presses after covering pressure plate, sample particle arrangement architecture and thermal coefficient under load action are obtained respectively by miniature webcam and film coefficient of heat transfer probe, and relationship between the two is established, it lays the foundation for theory analysis and numerical experiment.
Description
Technical field
The present invention relates to devices and its experimental method that a kind of research load-thermal coefficient relationship carefully sees mechanism, are suitable for
A variety of rock-soil materials such as soft rock, clay.
Background technique
Temperature field is basis and the premise for carrying out Rock And Soil Calculation of Thermal Deformation, and thermal coefficient directly restricts the shape in temperature field
At and develop.It is influenced by project management model (load property, load magnitude, action time), micro- microscopical structure in rock soil medium (
Grain-hole-water) constantly change, and influence and control its macroscopical thermal coefficient.
Initial stress state is that underground engineering forms the basic inducement for excavating " load ".Regardless of being that nature soil or heat are disturbed
It breaks ground, the direct measurement of initial stress state all has problems, such as the Deformation control and load measurement, existing of laboratory test
Elasticity hypothesis of field test etc., fails effectively to be solved.Therefore, primary stress in rock soil medium is obtained by indirect method
State has important learning value and engineering significance.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of research load-thermal coefficient
Relationship carefully sees the device and its experimental method of mechanism, can complete saturation or unsaturation Rock And Soil in a variety of pressure and loading environment
The observation of lower thermal coefficient measured with internal microstructure.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of research load-thermal coefficient relationship carefully sees the device of mechanism, including the identical ring mould of two structures, same
Axis transition apparatus, pressure plate；The coaxial transition device is the I-shaped structure that center is equipped with column-like paths, between top and bottom
Equipped with 120 ° of the reinforcing thin plate in interval；Ring mould and coaxial transition device are transparent organic glass material, two circular dies
Red graduation mark is equipped on the medial surface of tool；The upper and lower surface of coaxial transition device is respectively fixedly connected with a ring mould,
Two ring moulds and the coaxial arrangement of coaxial transition device, junction is equipped with sealing ring；It is the medial surface of two ring moulds, same
It is uniformly distributed in the mold at upper and lower interface that medial surface, coaxial transition device and two ring moulds of axis transition apparatus are formed
If miniature webcam；Film coefficient of heat transfer is laid on the upper and lower interface of sample of two ring moulds and coaxial transition device
Probe；Permeable stone and pressure plate are set gradually on the end face of two ring moulds respectively, is equipped with drainage channel in the pressure plate,
Ring mould and pressure plate junction are equipped with sealing ring.
Further, the total detection area of miniature webcam on ring mould medial surface and ring mould inner cavity side surface
Product ratio >=50%；The total detection area of miniature webcam and coaxial transition device cylindrical interior volume side on coaxial transition device medial surface
Face surface area ratio >=50%；It is circular die that the miniature webcam at the upper and lower interface, which is laid in, at a distance from mold axis
Has the 1/3~2/3 of cavity radius size；On film coefficient of heat transfer probe single side level detection area and sample interface or
Lower interface area ratio >=50%.
A kind of experimental method for carefully seeing mechanism device based on research load-thermal coefficient relationship, comprising the following steps:
Step 1, two ring moulds are separately positioned on coaxial transition device both ends and are coaxially disposed, ring mould with it is coaxial
Transition apparatus is connected by joinery and its construction, and sealing ring is installed in junction, and pressure plate installs sealing ring on side in advance；
Step 2, two section of first cylinder sample is prepared, the diameter of first cylinder sample is consistent with ring mould internal diameter,
Height is less than the height of ring mould；Special-shaped cylinder composite sample is prepared by the second cylinder sample and two sections of sizes consistent the
Three cylinder samples composition, the size of the second cylinder sample is consistent with coaxial transition device column-like paths size, third cylinder sample
Diameter it is consistent with ring mould internal diameter, height be ring mould height 1/8~1/10；
Step 3, one section of third cylinder sample is put into a ring mould first from the side of device, then in the third
Film coefficient of heat transfer probe and one section of first cylinder sample are sequentially placed on cylinder sample, then on first cylinder sample successively
Place permeable stone and pressure plate；The second cylinder sample, third cylinder sample, the thermally conductive system of film are sequentially placed into from the other side of device
Number probe, the first cylinder sample, are then sequentially placed permeable stone and pressure plate again；
Step 4, apply Mechanical loading on the pressure plate of device two sides, sample is recorded in every grade of lotus by red graduation mark
Height after load effect；Drainage channel is used to drain or be vented by preset requirement Control Assay；It is popped one's head in by film coefficient of heat transfer
The particle of the first cylinder sample and special-shaped cylinder composite sample under every grade of load action, which is observed, with miniature webcam carefully sees arrangement
Structure and thermal coefficient.
The utility model has the advantages that 1. can be measured under different loading conditions using apparatus of the present invention it is soft under saturation or unsaturated state
The thermal coefficient of the rock-soil materials such as rock, clay, a variety of pressure of analog and loading environment.
2. the relationship between rock soil medium thermal coefficient and load can be established using apparatus of the present invention, and then combine rock soil medium
Three-dimensional microstructures variation under loaded conditions, is probed between the micro- microscopical structure of imposed load, rock soil medium, thermal coefficient number
Correlation provides experiment support for DEM analysis.
3. apparatus of the present invention structure is simple, easy for installation, detachable intermediate coaxial transition apparatus meets a variety of samples and reality
Condition is tested, test operation is flexible and changeable.
Detailed description of the invention
Fig. 1 is the exterior perspective view of apparatus of the present invention；
Fig. 2 is ring mould detail drawing and coaxial transition device detail drawing；
Fig. 3 is apparatus of the present invention overall structure sectional view；
Fig. 4 is mold assay maps；
In figure: ring mould -1, coaxial transition device -2, pressure plate -3, joinery and its construction -4, red graduation mark -5, sealing
On circle -6, ring mould side -7, coaxial transition device side -8, miniature webcam -9, coaxial transition device and ring mould
Interface -10, film coefficient of heat transfer probe -11, the first cylinder sample -12, drainage channel -13, coaxial transition device and annular
Interface -14 under mold, interface -15 under sample reinforce thin plate -16, special-shaped cylinder composite sample -17, the second cylinder sample -
171, third cylinder sample -172, interface -18 on sample, permeable stone -19.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1-3, a kind of device studied load-thermal coefficient relationship and carefully see mechanism, including two structures are identical
Ring mould 1, coaxial transition device 2, pressure plate 3.Coaxial transition device 2 is the I-shaped knot that center is equipped with column-like paths
Structure is equipped with the reinforcing thin plate 16 at 120 ° of interval between top and bottom.In the present embodiment, ring mould 1 is using 15~20mm thickness
Transparent organic glass production, reinforcing thin plate 16 can be used stainless steel fitting.Ring mould 1 and coaxial transition device 2 are transparent
Organic glass material is equipped with red graduation mark 5 on the medial surface of two ring moulds 1.The upper and lower surface of coaxial transition device 2
A ring mould 1 is fixedly connected with by joinery and its construction 4 respectively, two ring moulds 1 and coaxial transition device 2 are coaxially disposed,
Junction is equipped with sealing ring 6.The medial surface 7 of two ring moulds 1, the medial surface 8 of coaxial transition device 2, coaxial transition dress
Set 2 and two ring moulds 1 formed upper and lower interface 10,14 at mold in lay miniature webcam 9.Two annulars
Film coefficient of heat transfer probe 11 is laid on the upper and lower interface 18,15 of the sample of mold 1 and coaxial transition device 2.Two annulars
Permeable stone 19 and pressure plate 3 are set gradually on the end face of mold 1 respectively, is equipped with drainage channel 13, ring mould 1 in pressure plate 3
Sealing ring 6 is equipped with 3 junction of pressure plate.
The total detection area of miniature webcam 9 and 1 inner cavity side surface area ratio of ring mould on 1 medial surface 7 of ring mould
>=50%.The total detection area of miniature webcam 9 and 2 cylindrical interior volume side of coaxial transition device on 2 medial surface 8 of coaxial transition device
Face surface area ratio >=50%；It is annular that the miniature webcam 9 at upper and lower interface 10,14, which is laid in, at a distance from mold axis
The 1/3~2/3 of 1 cavity radius size of mold.The dead size of installation miniature webcam cavity preferably takes 5~7mm.Film coefficient of heat transfer
It pops one's head in 15 area ratio >=50% of interface 18 or lower interface on 11 single side level detection areas and sample.
The experimental method of mechanism device is carefully seen based on research load-thermal coefficient relationship, comprising the following steps:
Step 1, two ring moulds 1 are separately positioned on 2 both ends of coaxial transition device and are coaxially disposed, ring mould 1 with
Coaxial transition device 2 is connected by joinery and its construction, and sealing ring 6 is installed in junction, and pressure plate installs sealing ring 6 on 3 side in advance.
Step 2, two section of first cylinder sample 12 is prepared, the diameter of the first cylinder sample 12 is consistent with 1 internal diameter of ring mould,
Height is less than the height of ring mould 1.Special-shaped cylinder composite sample 17 is prepared by the second cylinder sample 171 and two sections of sizes one
The third cylinder sample 172 of cause forms, and the size of the second cylinder sample 171 is consistent with 2 column-like paths size of coaxial transition device,
The diameter of third cylinder sample 172 is consistent with 1 internal diameter of ring mould, and height is the 1/8~1/10 of 1 height of ring mould.
Step 3, one section of third cylinder sample 172 is put into a ring mould 1 first from the side of device, then at this
Film coefficient of heat transfer probe 11 and one section of first cylinder sample 12 are sequentially placed on third cylinder sample 172, then in first circle
Permeable stone 19 and pressure plate 3 are sequentially placed on column sample 12.The second cylinder sample 171, are sequentially placed into from the other side of device
Three cylinder samples 172, film coefficient of heat transfer the 11, first cylinder sample 12 of probe, are then sequentially placed permeable stone 19 and pressurization again
Plate 3.
Step 4, apply Mechanical loading on the pressure plate 3 of device two sides, Mechanical loading process can be by MTS, GDS or routine
Test machine for mechanism control.Height of the sample 12 after every grade of load action is recorded by red graduation mark 5, drainage channel 13 is used for
It drains or is vented by preset requirement Control Assay.The first cylinder is observed by film coefficient of heat transfer probe 11 and miniature webcam 9
The particle of sample 12 and special-shaped cylinder composite sample 17 under every grade of load action carefully sees arrangement architecture and thermal coefficient, thus
Establish load, thermal coefficient, the correlation of thin portion structure.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. the device that a kind of research load-thermal coefficient relationship carefully sees mechanism, it is characterised in that: including the identical ring of two structures
Shape mold (1), coaxial transition device (2), pressure plate (3)；The coaxial transition device (2) is the work that center is equipped with column-like paths
Font structure is equipped with the reinforcing thin plate (16) at 120 ° of interval between top and bottom；Ring mould (1) and coaxial transition device (2)
It is transparent organic glass material, red graduation mark (5) is equipped on the medial surface of two ring moulds (1)；Coaxial transition dress
The upper and lower surface for setting (2) is respectively fixedly connected with a ring mould (1), and two ring moulds (1) and coaxial transition device (2) are same
Axis setting, junction is equipped with sealing ring (6)；The inside of the medial surfaces (7) of two ring moulds (1), coaxial transition device (2)
Miniature webcam (9) are laid in the mold of face (8) and coaxial transition device (2) top and bottom and sample contacts part；Two
Third cylinder sample (172) and the first cylinder sample (12) are set outward from introversive respectively in ring mould (1), in the third
Film coefficient of heat transfer probe (11) is laid on the interface of cylinder sample (172) and the first cylinder sample (12)；Two annulars
Permeable stone (19) and pressure plate (3) are set gradually on the end face of mold (1) respectively, is equipped with drainage channel in the pressure plate (3)
(13), ring mould (1) and pressure plate (3) junction are equipped with sealing ring (6).
2. the device that a kind of research load-thermal coefficient relationship according to claim 1 carefully sees mechanism, it is characterised in that:
The total detection area of miniature webcam (9) and ring mould (1) inner cavity side surface area ratio on ring mould (1) medial surface (7)
≥50%；The total detection area of miniature webcam (9) and coaxial transition device (2) column on coaxial transition device (2) medial surface (8)
Shape inner cavity side surface area ratio >=50%；Be laid in coaxial transition device (2) top and bottom with it is micro- in the mold of sample contacts part
Type camera (9) is the 1/3 ~ 2/3 of ring mould (1) cavity radius size at a distance from mold axis；The thermally conductive system of film
Interface (18) or lower interface (15) area ratio >=50% on number probe (11) single side level detection area and sample.
3. a kind of research load-thermal coefficient relationship as described in claim 1 carefully sees the experimental method of the device of mechanism, special
Sign is, experimental method the following steps are included:
Step 1, two ring moulds (1) are separately positioned on coaxial transition device (2) both ends and are coaxially disposed, ring mould (1)
It is connect with coaxial transition device (2) by joinery and its construction, sealing ring (6) are installed in junction, install in advance on pressure plate (3) side
Sealing ring (6)；
Step 2, two section of first cylinder sample (12) is prepared, the diameter of first cylinder sample (12) and ring mould (1) are interior
Diameter is consistent, is highly less than the height of ring mould (1)；Prepare special-shaped cylinder composite sample (17), the abnormity cylinder combination examination
Sample (17) is made of the second cylinder sample (171) and the consistent third cylinder sample (172) of two sections of sizes, the second cylinder sample
(171) size is consistent with coaxial transition device (2) column-like paths size, the diameter and circular die of third cylinder sample (172)
Tool (1) internal diameter is consistent, and height is the 1/8 ~ 1/10 of ring mould (1) height；
Step 3, one section of third cylinder sample (172) is put into a ring mould (1) first from the side of device, then at this
Film coefficient of heat transfer probe (11) and one section of first cylinder sample (12) are sequentially placed on third cylinder sample (172), then at this
Permeable stone (19) and pressure plate (3) are sequentially placed on first cylinder sample (12)；The second circle is sequentially placed into from the other side of device
Column sample (171), third cylinder sample (172), film coefficient of heat transfer pop one's head in (11), the first cylinder sample (12), then again according to
Secondary placement permeable stone (19) and pressure plate (3)；
Step 4, apply Mechanical loading on the pressure plate (3) of device two sides, existed by red graduation mark (5) record sample (12)
Height after every grade of load action；Drainage channel (13) is used to drain or be vented by preset requirement Control Assay；It is led by film
Hot coefficient probe (11) and miniature webcam (9) observation the first cylinder sample (12) and special-shaped cylinder composite sample (17) are at every grade
Particle under load action carefully sees arrangement architecture and thermal coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944022.2A CN106501303B (en) | 2016-11-02 | 2016-11-02 | A kind of research load-thermal coefficient relationship carefully sees the device and its experimental method of mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944022.2A CN106501303B (en) | 2016-11-02 | 2016-11-02 | A kind of research load-thermal coefficient relationship carefully sees the device and its experimental method of mechanism |
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| Publication Number | Publication Date |
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| CN106501303A CN106501303A (en) | 2017-03-15 |
| CN106501303B true CN106501303B (en) | 2019-04-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4138892A (en) * | 1977-06-22 | 1979-02-13 | Davis George B | Electrically heated mold for making test specimens of concrete |
| CN1211353A (en) * | 1996-02-15 | 1999-03-17 | 热力学技术公司 | Piezo-pyroelectric energy converter and method |
| CN101393150A (en) * | 2008-10-16 | 2009-03-25 | 大连理工大学 | Solid interface contact heat exchange coefficient measurement method and apparatus based on transient method |
| CN103776984A (en) * | 2014-02-24 | 2014-05-07 | 黑龙江省水利科学研究院 | Joint test device and method for expansion and frost heaving of soil body |
| CN104359942A (en) * | 2014-12-01 | 2015-02-18 | 哈尔滨工业大学 | Interface thermal resistance measuring method in dissimilar metal compound molding process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3748424B2 (en) * | 2002-08-21 | 2006-02-22 | 財団法人北九州産業学術推進機構 | Scaling law moisture measurement method and apparatus |
-
2016
- 2016-11-02 CN CN201610944022.2A patent/CN106501303B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4138892A (en) * | 1977-06-22 | 1979-02-13 | Davis George B | Electrically heated mold for making test specimens of concrete |
| CN1211353A (en) * | 1996-02-15 | 1999-03-17 | 热力学技术公司 | Piezo-pyroelectric energy converter and method |
| CN101393150A (en) * | 2008-10-16 | 2009-03-25 | 大连理工大学 | Solid interface contact heat exchange coefficient measurement method and apparatus based on transient method |
| CN103776984A (en) * | 2014-02-24 | 2014-05-07 | 黑龙江省水利科学研究院 | Joint test device and method for expansion and frost heaving of soil body |
| CN104359942A (en) * | 2014-12-01 | 2015-02-18 | 哈尔滨工业大学 | Interface thermal resistance measuring method in dissimilar metal compound molding process |
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