CN107764715B - Pressure-bearing device and thermo-hydro-mechanical coupling device - Google Patents
Pressure-bearing device and thermo-hydro-mechanical coupling device Download PDFInfo
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- CN107764715B CN107764715B CN201710950442.6A CN201710950442A CN107764715B CN 107764715 B CN107764715 B CN 107764715B CN 201710950442 A CN201710950442 A CN 201710950442A CN 107764715 B CN107764715 B CN 107764715B
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- 230000008878 coupling Effects 0.000 title claims abstract description 15
- 238000010168 coupling process Methods 0.000 title claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 10
- 239000011435 rock Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 239000002103 nanocoating Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010952 in-situ formation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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Abstract
The invention provides a pressure-bearing device and a thermo-hydro-mechanical coupling device, which relate to the technical field of oil-gas scientific research and comprise six pressure-bearing table bodies, wherein the six pressure-bearing table bodies are arranged in pairs in opposite and are spliced into a cube structure with a cavity; the pressure-bearing table body comprises four pressure-bearing sub-table bodies which are arranged in a matrix manner and connected and spliced pairwise to form the pressure-bearing table body; a buffer filling layer is arranged between the adjacent pressure-bearing sub-table bodies. In the technical scheme, the rigid part of the pressure-bearing device is six pressure-bearing table bodies, and in the composition structure of each pressure-bearing table body, the four pressure-bearing sub-table bodies and the buffer filling layer arranged among the four pressure-bearing sub-table bodies are included.
Description
Technical Field
The invention relates to the technical field of oil and gas scientific research, in particular to a pressure-bearing device and a thermo-hydro-mechanical coupling device.
Background
At present, the seepage physical model device and the method commonly used in the field of oil and gas scientific research mainly have three types:
(1) one-dimensional permeability measurement, wherein fluid is injected from one end and flows out from the other end, only stress loading in one direction is realized, only permeability in the direction vertical to the end face can be measured, and the ground stress state permeability characteristic of the three-dimensional stress of the actual stratum cannot be truly reflected;
(2) the method comprises the following steps of simulating three-dimensional permeability measurement, loading axial stress on two bottom surfaces of a cylinder while applying confining pressure on the side surface of the cylinder, so that the measurement of the rock core permeability under one axial stress and one horizontal stress can be realized, the measurement of the uniaxial permeability can be realized only, and the two-dimensional stress state and the actual stratum condition still have larger errors;
(3) the three-dimensional permeability measurement can realize independent loading of stress in three directions of the cuboid core and measurement of the three-dimensional permeability under a true triaxial crustal stress condition. However, when the hardness is small or the permeability of the soil body is measured, mutual interference of three-direction pressing plates around the rock core is easily caused, and triaxial independent stress loading cannot be really realized.
The loading flat plate in the conventional heat fluid-solid coupling device is generally rigid, so that the pressure-bearing device can easily cause three-axis mutual interference when pressing in the process of an actual test, which indicates that the conventional heat fluid-solid coupling device cannot completely realize a true three-axis test in practice.
Disclosure of Invention
The invention aims to provide a pressure-bearing device and a thermo-fluid-solid coupling device, and aims to solve the technical problem that three shafts of the pressure-bearing device are easy to interfere with each other in the experimental process of the thermo-fluid-solid coupling device in the prior art.
The invention provides a pressure-bearing device which comprises six pressure-bearing table bodies, wherein the six pressure-bearing table bodies are arranged in pairs in an opposite mode and are spliced into a cube structure with a cavity;
the pressure-bearing table body comprises four pressure-bearing sub-table bodies which are arranged in a matrix manner and connected and spliced pairwise to form the pressure-bearing table body;
and a buffer filling layer is arranged between the adjacent pressure bearing sub-table bodies.
In the technical scheme, the rigid part of the pressure-bearing device comprises six pressure-bearing table bodies, and each pressure-bearing table body comprises four pressure-bearing sub-table bodies and a buffer filling layer arranged among the four pressure-bearing sub-table bodies.
When a pressure bearing test is carried out, the buffer filling layer can deform, so that the relative distance between the four pressure bearing sub-tables in the pressure bearing table body in each direction changes along with the deformation of the rock, and then the six pressure bearing tables deform correspondingly, therefore, the pressure bearing device can form a rigid-flexible mixed pressure bearing structure.
Further, in the embodiment of the invention, the inner surface of the bearing table body is provided with a buffer sheet layer.
Further, in the embodiment of the invention, the buffer sheet layers arranged on the inner surfaces of the adjacent pressure bearing table bodies are connected.
Further, in the embodiment of the present invention, the surface of the buffer sheet layer is provided with radial guide grooves.
Further, in the embodiment of the invention, a fluid channel is arranged on the buffer filling layer on at least one pressure bearing table body;
the fluid channel extends to the buffer sheet layer on the inner surface of the pressure bearing table body.
Further, in an embodiment of the present invention, a material of the buffer filling layer includes nitrile rubber.
Further, in an embodiment of the present invention, a material of the cushion sheet layer includes rubber.
Further, in the embodiment of the invention, a plurality of the pressure-bearing table bodies are connected through rivets.
Further, in the embodiment of the invention, a plurality of the pressure-bearing sub-tables are connected through a mortise and tenon mechanism.
Further, in the embodiment of the invention, the pressure-bearing sub-table body is bonded with the buffer filling layer through a modified epoxy adhesive.
The application also provides a thermo-fluid-solid coupling device, which comprises the pressure-bearing device.
In the technical scheme, the true triaxial tester adopts the rigid-flexible combined pressure-bearing device, when a pressure-bearing test is carried out, the buffer filling layer can deform, so that the relative distance between the four pressure-bearing sub-tables in the pressure-bearing table in each direction changes along with the deformation of rocks, and then the six pressure-bearing tables deform correspondingly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a pressure-bearing device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pressure-bearing table body according to an embodiment of the present invention;
FIG. 3 is a top view of the pressure bearing table body shown in FIG. 2;
FIG. 4 is a side view of the pressure bearing table body shown in FIG. 2;
fig. 5 is a schematic structural diagram of a diversion trench according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a shaft pressure loading device according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a thermo-fluid-solid coupling device provided in accordance with an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a thermo-fluid-solid coupling device according to an embodiment of the present invention;
fig. 9 is an internal structural schematic view of a pressure-bearing mechanism provided in an embodiment of the present invention;
fig. 10 is a schematic internal overall structure diagram of a pressure-bearing mechanism according to an embodiment of the present invention.
Reference numerals:
1-a pressure-bearing table body; 2-a shell; 3-X axis pressure applying rod; 4-Y axis pressure applying rod;
5-Z axis pressure applying rod; 6-a pressure-bearing frame; 7-a heating mechanism; 8-an outer shell;
11-a pressure-bearing sub-table body; 12-a buffer filling layer; 13-a buffer layer;
14-a diversion trench; 15-a fluid channel; 16-mortise and tenon mechanisms;
61-guide groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic structural diagram of a pressure-bearing device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pressure-bearing table body 1 according to an embodiment of the present invention;
fig. 3 is a top view of the pressure-containing table body 1 shown in fig. 2.
Firstly, as shown in fig. 1, fig. 2 and fig. 3, the pressure-bearing device provided by the present embodiment includes six pressure-bearing table bodies 1, and the six pressure-bearing table bodies 1 are arranged in pairs and are spliced to form a cube structure having a cavity. That is, six pressure-bearing table bodies 1 are respectively arranged in six directions, namely, up, down, front, rear, left and right, and all face the center. Referring to the structure of the pressure-bearing table body 1 in fig. 2, the oblique sides of the six pressure-bearing table bodies 1 are combined, then approach to the center, and are spliced to form a cube structure.
Preferably, in the embodiment of the present invention, a plurality of the pressure-bearing table bodies 1 are connected by rivets.
Specifically, with reference to fig. 2, the pressure-bearing table body 1 includes four pressure-bearing sub-table bodies 11, and the four pressure-bearing sub-table bodies 11 are arranged in a matrix and connected and spliced two by two to form the pressure-bearing table body 1. That is, the four pressure-bearing sub-tables 11 of each pressure-bearing table 1 are arranged in a matrix as in fig. 2, and it is important that, in order to realize the pressing of true triaxial, a cushion filling layer 12 is provided between the adjacent pressure-bearing sub-tables 11.
Fig. 9 is an internal structural schematic view of a pressure-bearing mechanism provided in an embodiment of the present invention;
fig. 10 is a schematic internal overall structure diagram of a pressure-bearing mechanism according to an embodiment of the present invention.
Alternatively, as shown in fig. 9 and 10, in the embodiment of the present invention, a plurality of the pressure-bearing sub-tables 11 are connected by a mortise and tenon mechanism 16.
From the above, the rigid part of the pressure-bearing device is six pressure-bearing table bodies 1, and in the composition structure of each pressure-bearing table body 1, four pressure-bearing sub-table bodies 11 and a buffer filling layer 12 arranged between the four pressure-bearing sub-table bodies 11 are included.
Therefore, when a bearing test is performed, the buffer filling layer 12 is deformed so that the relative distance of the four bearing sub-tables 11 in the bearing table 1 in each direction is changed along with the deformation of the rock.
When the relative distance between the four pressure-bearing sub-tables 11 in the pressure-bearing table 1 in each direction changes, the structure of each pressure-bearing table 1 deforms correspondingly, so that the pressure-bearing device can form a rigid-flexible mixed pressure-bearing structure, compared with the rigid pressure-bearing structure in the prior art, in the process of pressure-bearing test, the rigid-flexible combined pressure-bearing structure can realize that the rock and the pressure-bearing table 1 in each direction are simultaneously pressed and deformed, when each pressure-bearing table 1 is pressed, the area of the inner surface of the pressure-bearing table 1 changes along with the size of the pressed force, and in the changing process, the area of the inner surface of the pressure-bearing table 1 is always equal to the area of the inner rock.
Compared with the prior art, the rigid-flexible combined bearing structure can well avoid the phenomenon of mutual interference of three shafts, realize the change of the true three shafts and avoid the problem of blank angles, so that the phenomenon of stress concentration caused by the blank angles is avoided, and the whole structure has good stability.
Preferably, the material of the cushion filling layer 12 includes nitrile rubber.
Fig. 4 is a side view of the pressure-containing table body 1 shown in fig. 2.
As shown in fig. 4, in the embodiment of the present invention, the inner surface of the pressure-bearing table body 1 is provided with the buffer sheet layer 13, and the buffer sheet layer 13 can further make the acting force applied to the core more uniform, so as to avoid the phenomenon of uneven stress of the core.
Preferably, the material of the cushion sheet layer 13 includes rubber.
Further, in the embodiment of the present invention, the buffer sheet layers 13 disposed adjacent to the inner surface of the pressure-bearing table body 1 are connected, and when the adjacent buffer sheet layers 13 are connected with each other, good sealing performance can be achieved in the whole structure.
In the process of actual operation, after the pressure-bearing table body 1 is stressed, the adjacent buffer sheet layers 13 can be contacted with each other, so that the sealing of a seepage system in the pressure-bearing device is realized, and the smooth performance of permeability measurement is ensured.
Fig. 5 is a schematic structural view of a flow guide groove according to an embodiment of the present invention
As shown in fig. 5, in the embodiment of the present invention, the surface of the buffer sheet layer 13 is provided with the radial guide grooves 14, but the guide grooves 14 are preferably not formed throughout the entire buffer sheet layer 13 when being provided.
The radial guide grooves 14 can ensure that the maximum contact area is formed between the fluid and the rock core, so that the surface filling fluid is formed, and the experimental error is further reduced.
Further, in the embodiment of the present invention, a fluid channel 15 is disposed on the buffer filling layer 12 on at least one pressure bearing table body 1, the fluid channel 15 extends to the buffer sheet layer 13 on the inner surface of the pressure bearing table body 1, and the fluid channel 15 is used for filling fluid to enable the fluid to flow into the inner cavity of the pressure bearing device.
Preferably, as shown in fig. 1, such a fluid passage 15 is generally disposed at the center of each pressure-bearing table body 1, so as to ensure better uniformity of fluid flow into the interior of the pressure-bearing apparatus, thereby enabling triaxial permeability measurement.
Preferably, in the embodiment of the present invention, the pressure-bearing sub-table body 11 is bonded to the buffer filling layer 12 and the buffer sheet layer 13 by a modified epoxy adhesive.
The application also provides a thermo-fluid-solid coupling device, which comprises the pressure-bearing device.
Since the specific structure, functional principle and technical effect of the pressure-bearing device have been described in detail in the foregoing, further description is omitted here.
Therefore, any technical content related to the pressure-bearing device can be referred to the above description of the pressure-bearing device.
In the technical scheme, the true triaxial tester adopts the rigid-flexible combined pressure-bearing device, when a pressure-bearing test is carried out, the buffer filling layer 12 can deform, so that the relative distance between the four pressure-bearing sub-tables 11 in the pressure-bearing table 1 in each direction changes along with the deformation of rocks, and then the six pressure-bearing tables 1 deform correspondingly.
Fig. 6 is a schematic structural diagram of a shaft pressure loading device according to an embodiment of the present invention.
FIG. 7 is a cross-sectional view of a thermo-fluid-solid coupling device provided in accordance with an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a thermo-fluid-solid coupling device according to an embodiment of the present invention.
First, as shown in fig. 6 to 8, the present embodiment provides a shaft pressure loading device including a device body including a housing 2.
In addition, the device body also comprises at least two X-axis pressure applying rods 3, at least two Y-axis pressure applying rods 4 and at least two Z-axis pressure applying rods 5 which are arranged on the shell 2;
at least two X-axis pressure applying rods 3 are arranged oppositely along the X axis, at least two Y-axis pressure applying rods 4 are arranged oppositely along the Y axis, and at least two Z-axis pressure applying rods 5 are arranged oppositely along the Z axis.
In a preferred embodiment, the number of the X-axis pressure applying levers 3, the Y-axis pressure applying levers 4, and the Z-axis pressure applying levers 5 is two, and two of the X-axis pressure applying levers 3, two of the Y-axis pressure applying levers 4, and two of the Z-axis pressure applying levers 5 are provided as in the structure shown in fig. 6, and two of the X-axis pressure applying levers 3, two of the Y-axis pressure applying levers 4, and two of the Z-axis pressure applying levers 5 are respectively opposed two by two and then face a pressure receiving device provided toward the center.
As can be seen from the above, in order to realize the application of true triaxial stress, pressure applying rods are provided in all three directions of the X-axis, the Y-axis and the Z-axis, so based on the structures of the two X-axis pressure applying rods 3, the two Y-axis pressure applying rods 4 and the two Z-axis pressure applying rods 5, the two pressure applying rods in each direction are used for performing opposite pressing to form a three-dimensional axial pressure loading device.
Therefore, the X, Y and the two X-axis pressure applying rods 3, the two Y-axis pressure applying rods 4 and the two Z-axis pressure applying rods 5 in the Z directions can be used for realizing the independent loading of the axial pressure in the three directions, so that the formation condition is simulated to the maximum extent, and a foundation is laid for the measurement of the permeability under the in-situ formation condition.
Axial pressure can be provided by six hydraulic cylinders which are opposite in pairs, and pressure of the hydraulic cylinders acts on the two X-axis pressure applying rods 3, the two Y-axis pressure applying rods 4 and the two Z-axis pressure applying rods 5, and then is continuously applied to the rock core through the two X-axis pressure applying rods 3, the two Y-axis pressure applying rods 4 and the two Z-axis pressure applying rods 5.
With continued reference to fig. 6, in the embodiment of the present invention, a bearing frame 6 is further included, and the bearing frame 6 limits the movement of the two X-axis pressing rods 3, the two Y-axis pressing rods 4, and the two Z-axis pressing rods 5.
The X-axis pressure applying rod 3, the Y-axis pressure applying rod 4 and the Z-axis pressure applying rod 5 are all provided with axial guide grooves 61.
The pressure-bearing frame 6 is slidably connected to the guide groove 61, and is configured to limit the X-axis pressure applying rod 3, the Y-axis pressure applying rod 4, and the Z-axis pressure applying rod 5 to move axially.
The pressure-bearing frame 6 is arranged to ensure that the pressures exerted by the X-axis pressure-applying rod 3, the Y-axis pressure-applying rod 4 and the Z-axis pressure-applying rod 5 can be aligned with the pressure-bearing device, so that the central action point is not deviated.
As shown in fig. 6, the X-axis pressing bar 3, the Y-axis pressing bar 4, and the Z-axis pressing bar 5 can be controlled in four directions, i.e., up, down, left, and right, by the cooperation of the pressure receiving means and the guide groove 61.
Preferably, the pressure-bearing frame 6 can be arranged into a mortise and tenon structure so as to improve the stability.
Wherein, the tenon part, namely the stable structure is fixed on the wall surface of the middle system, the pressure applying rod respectively carves the guide rail groove, namely the mortise part, the stable structure and the guide rail groove are integrally assembled to form the integral stable structure,
further, in the embodiment of the present invention, the inner wall of the housing 2 is provided with a heating mechanism 7, and the inside can be heated by the heating mechanism 7.
Preferably, the heating mechanism 7 comprises a circular PTC thermistor arranged on the inner wall of the shell 2, and the PTC thermistor has the characteristics of small thermal resistance and high heat exchange efficiency.
The PTC thermistor can be set to a plurality of grades below 200 ℃, can automatically keep constant temperature according to the performance of the material, and does not need a temperature control system.
Compared with the conventional electric heating mode in the prior art, the PTC thermistor has the characteristics of high electric-heat conversion rate, no luminescence and heating, good safety and stability, long service life and the like. In addition, the PTC thermistor can also realize self-control constant temperature heating, does not need excessive temperature protection devices, and is simple and practical.
Further, in the embodiment of the present invention, the X-axis pressing rod 3 includes a first rod and a second rod, the diameter of the second rod is smaller than that of the first rod, and the second rod is coaxially disposed at the outer end of the first rod.
Or, Y axle pressure application rod 4 includes the first body of rod and the second body of rod, the diameter of the second body of rod is less than the first body of rod, the coaxial setting of the second body of rod is in the outer end of the first body of rod.
Or, Z axle pressure applying rod 5 includes the first body of rod and the second body of rod, the diameter of the second body of rod is less than the first body of rod, the coaxial setting of the second body of rod is in the outer end of the first body of rod.
The first rod body and the second rod body can be of an integral structure or a splicing structure.
Preferably, in an embodiment of the present invention, the first rod has a diameter of 100mm and a length of 100 mm.
Preferably, in an embodiment of the present invention, the second rod has a diameter of 50mm and a length of 40 mm.
Further, in the embodiment of the present invention, an outer casing 8 is further included, and the outer casing 8 is disposed outside the casing 2.
The mode that adopts shell body 8 and casing 2 matched with can improve heat retaining effect, forms the heat preservation system of interior external combination, improves temperature variation's stability to can practice thrift the energy consumption.
Preferably, in the embodiment of the present invention, the material of the housing 2 includes epoxy glass.
Preferably, in the embodiment of the present invention, the outer casing 8 is formed by laminating two layers of EVA/ITO transparent materials.
Preferably, the housing 2 has a cylindrical structure, and the housing 2 has a diameter of 400mm and a height of 400 mm.
Preferably, in an embodiment of the present invention, the housing has a cylindrical structure.
During the assembly process, the first rod body is inserted into the inner hole of the shell 2, and the second rod body is inserted into the outer hole of the outer shell 8.
The bearing frame 6 is matched with the guide function of the bearing frame 6, so that the bearing frame 6 is matched with the inner hole of the shell 2 and the outer hole of the shell body 8, the stability of a stress center can be ensured, and the measurement deviation caused by inaccurate loading is avoided.
Further, in the embodiment of the present invention, the surface of the X-axis pressing bar 3 is coated with a nano-coating.
Alternatively, the surface of the Y-axis pressing bar 4 is coated with a nano-coating.
Alternatively, the surface of the Z-axis pressing bar 5 is coated with a nano-coating.
The surfaces of the X-axis pressure applying rod 3, the Y-axis pressure applying rod 4 and the Z-axis pressure applying rod 5 are coated with nano coatings, so that the function of reducing heat loss can be achieved.
Preferably, in an embodiment of the present invention, the nanocoating comprises a UGL-9 nanocoating.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The pressure-bearing device is characterized by comprising six pressure-bearing table bodies (1), wherein every two of the six pressure-bearing table bodies (1) are arranged oppositely and spliced into a cube structure with a cavity;
the pressure-bearing table body (1) comprises four pressure-bearing sub-table bodies (11), and the four pressure-bearing sub-table bodies (11) are arranged in a matrix manner and are connected and spliced pairwise to form the pressure-bearing table body (1);
a buffer filling layer (12) is arranged between the adjacent pressure bearing sub-table bodies (11);
the pressure-bearing table bodies (1) are connected through rivets, and the pressure-bearing sub-table bodies (11) are connected through a mortise and tenon mechanism (16).
2. Bearing device according to claim 1, characterized in that the inner surface of the bearing table body (1) is provided with a buffer sheet layer (13).
3. Bearing device according to claim 2, characterized in that the buffer lamellae (13) arranged adjacent to the inner surface of the bearing table body (1) are connected.
4. Bearing device according to claim 2, characterized in that the surface of the buffer sheet (13) is provided with radial flow channels (14).
5. The bearing device according to claim 2, characterized in that a fluid channel (15) is provided on the cushion filling layer (12) on at least one of the bearing table bodies (1);
the fluid channel (15) extends to the buffer sheet layer (13) on the inner surface of the pressure bearing table body (1).
6. Bearing device according to claim 1, characterized in that the material of the cushioning filling layer (12) comprises nitrile rubber.
7. Bearing device according to claim 2, characterized in that the material of the damping sheet (13) comprises rubber.
8. A thermo-fluid-solid coupling device, characterized in that it comprises a pressure-bearing device according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710950442.6A CN107764715B (en) | 2017-10-13 | 2017-10-13 | Pressure-bearing device and thermo-hydro-mechanical coupling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710950442.6A CN107764715B (en) | 2017-10-13 | 2017-10-13 | Pressure-bearing device and thermo-hydro-mechanical coupling device |
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| CN107764715A CN107764715A (en) | 2018-03-06 |
| CN107764715B true CN107764715B (en) | 2020-09-01 |
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| CN101441208B (en) * | 2008-12-19 | 2012-02-22 | 河海大学 | True triaxial instrument of deformation without side direction interference |
| CN106442255B (en) * | 2016-09-07 | 2019-04-02 | 辽宁工程技术大学 | A kind of the coal petrography seepage flow test macro and method of the coupling of true triaxial multiple physical field |
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