CN217211927U - Multifunctional solid-gas coupling testing device - Google Patents
Multifunctional solid-gas coupling testing device Download PDFInfo
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- CN217211927U CN217211927U CN202220235383.0U CN202220235383U CN217211927U CN 217211927 U CN217211927 U CN 217211927U CN 202220235383 U CN202220235383 U CN 202220235383U CN 217211927 U CN217211927 U CN 217211927U
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- 238000012360 testing method Methods 0.000 title claims abstract description 66
- 230000008878 coupling Effects 0.000 title claims abstract description 25
- 238000010168 coupling process Methods 0.000 title claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 65
- 238000003825 pressing Methods 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 16
- 230000006378 damage Effects 0.000 description 13
- 239000003245 coal Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000011435 rock Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model relates to a multifunctional solid-gas coupling test device, which comprises an air pressure kettle, wherein openings at the front side and the rear side of the air pressure kettle are internally provided with flange type transparent window assemblies for observing sample changes; the upper end and the lower end of the air pressure kettle are respectively inserted with an upper piston and a lower pressing block; the upper part of the air pressure kettle is provided with a piston hole, an upper piston passes through the piston hole from the inside of the air pressure kettle, and an upper pressure plate is connected to the top of the upper piston through a fastener; the bottom of the lower pressing block is connected with a lower pressing plate through a fastener; coaxial signal conversion ports are coaxially formed in the thick walls of the left side and the right side of the air pressure kettle, coaxial signal converters are arranged in the coaxial signal conversion ports, coaxial cables with plugs are connected to the two sides of the coaxial signal converters, and the outer portions of the coaxial cables with the plugs are fixedly sealed through sealing square flanges; the thick wall on the side surface of the pressure kettle is provided with an air exhaust and injection hole. The utility model discloses richen the monitoring means, set up two side transparent windows and multi-functional signal conversion equipment, can use with multiple measuring equipment, observation equipment cooperation.
Description
Technical Field
The utility model belongs to the technical field of gas disaster prevention and control, especially, relate to a multi-functional solid gas coupling testing arrangement.
Background
Along with the increase of the mining depth of the mine, the mining of the high gas coal seam gradually becomes a normal state. Therefore, the research on the action mechanism of the coal and the gas has important significance on the prediction and the prevention of the dynamic disasters. The coal rock mechanical property experiment is an important way for researching the occurrence mechanism of dynamic disasters. Chinese patent (publication No. CN109187760A, published: 2019, 01.11) discloses a true triaxial gas-solid coupling coal sample anelastic anisotropy detection device, Chinese patent (publication No. CN112763329A, published: 2021, 05.07) discloses a gas-solid coupling coal rock triaxial mechanical damage real-time detection device, system and method, the two devices can realize real-time test of coal rock test piece damage degree in the whole process of compression under the condition of conventional triaxial stress and gas filling, and accordingly the characteristics of the ultrasonic attenuation coefficient anisotropies in different bedding directions of coal samples with different physical mechanical properties under the common influences of different gas pressures and different triaxial loading stresses are obtained, but the invention is a solid-gas coupling device under the triaxial condition. Chinese patent (publication number: CN101354356, published: 2009, 01/28) discloses a coal rock gas-solid coupling microscopic mechanical loading device, which can perform uniaxial mechanical tests in a gas-solid accident environment and planar strain mechanical tests in a gas-solid coupling environment, but has less selectivity of test piece size and only has a transparent window which can be observed on one side.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a multi-functional solid gas coupling testing arrangement can go deep into the mechanical properties of research coal rock mass under the effect of different gas pressures in the laboratory and change law and deformation destruction characteristic. The utility model discloses satisfying under the solid gas coupling experimental condition, further richened the monitoring means, remedied the not enough of existing instrument on the observation means, set up two side transparent windows and coaxial signal converter, can use with multiple measuring equipment, observation equipment cooperation, realized the collection of test piece mechanics change process and energy accumulation process in the pressure chamber, the outside can be through high transparent window to the test piece deformation destruction process survey in real time and record simultaneously.
A multifunctional solid-gas coupling test device comprises an air pressure kettle, wherein openings on the front side and the rear side of the air pressure kettle are internally provided with flange type transparent window assemblies for observing the change of a sample; an upper piston and a lower pressing block are respectively inserted at the upper end and the lower end of the air pressure kettle, and the air pressure kettle, the flange type window assemblies at the front side and the rear side of the air pressure kettle, the upper piston and the lower pressing block form a pressure bin; the upper part of the air pressure kettle is provided with a piston hole, an upper piston passes through the piston hole from the inside of the air pressure kettle, and an upper pressure plate is connected to the top of the upper piston through a fastener; the bottom of the lower pressing block is connected with a lower pressing plate through a fastener; coaxial signal conversion ports are coaxially formed in the thick walls on the left side and the right side of the air pressure kettle and communicated with the pressure bin, coaxial signal converters are arranged in the coaxial signal conversion ports, coaxial cables with plugs are connected to the two sides of the coaxial signal converters, and the outer portions of the coaxial cables with the plugs are fixedly sealed through sealing square flanges; and the thick wall on the side surface of the air pressure kettle is provided with an air exhaust and injection hole for connecting an external pipeline.
The flange type transparent window assembly comprises a sealing flange, a transparent window and a stress flange, the sealing flange is connected to the side face of the air pressure kettle through a fastening piece, a clamping groove is formed in the sealing flange, the transparent window is installed inside the sealing flange, and the outer side of the transparent window is fixed through the stress flange.
And a sealing ring is arranged between the upper piston and the air pressure kettle.
And the sealing flange is provided with a jackscrew.
The coaxial signal converter is a converter with a sealing ring.
Sealing rings are arranged between the sealing flange and the pressure bin, between the sealing flange and the stress flange, and between the stress flange and the transparent window, so that the air tightness of the device is guaranteed.
The air pressure kettle, the sealing flange and the stress flange are all made of high-strength stainless steel materials.
The lower pressing block, the upper piston, the upper pressing plate, the lower pressing plate and the sealing square flange are all made of 40Cr high-strength alloy materials.
The transparent window is made of an impact-resistant transparent material which can bear high pressure of at least 15MPa, the appearance is circular, and the permeability is 90%.
The beneficial effects of the utility model are that: adopt the utility model provides a testing arrangement can accomplish gas pressure and axial load in the laboratory and experiment the coupling effect of test piece.
1. Transparent windows made of high-pressure-resistant impact-resistant high-transparency materials are arranged on the front side and the rear side of the device, so that an internal test piece can be observed from multiple angles; and the transparent windows on the front side and the rear side can be detached, so that the operating space for placing the test piece is enlarged.
2. This device has set up coaxial signal conversion mouth, as the signal input and output device that the device was from joining in marriage, and the coaxial cable of taking the plug can be equipped with according to specific experimental condition, has reduced experimental data acquisition's limitation.
3. The device can be connected with an acoustic emission amplifier and an acoustic emission data acquisition instrument according to experimental needs, and can observe the mechanical process of coal body destruction and energy accumulation.
4. The device is simple to mount and dismount and convenient to operate, and is made of high-strength materials and high in safety performance; each joint in the device is provided with a sealing ring, so that the device has good sealing property.
Drawings
Fig. 1 is a schematic external structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a sectional view of the front view structure of the present invention;
fig. 4 is a side view of the present invention;
fig. 5 is a side view of the present invention;
fig. 6 is a sectional view of the top view structure of the present invention;
wherein,
1-an air pressure kettle, 2-a sealing flange, 3-a transparent window, 4-a stress flange, 5-a lower pressing block, 6-an upper piston, 7-a test piece, 8-an upper pressing plate, 9-a lower pressing plate, 10-an inner hexagonal bolt, 13-a sealing square flange, 14-a coaxial signal conversion port, 15-a coaxial cable with a plug, 16-a pressure bin, 17-an air suction and injection hole and 18-a jackscrew.
Detailed Description
For better explanation of the present invention, the following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings for better understanding.
Example 1
As shown in fig. 1, a multifunctional solid-gas coupling test device comprises an air pressure kettle 1, wherein flange type transparent window assemblies are arranged in openings at the front side and the rear side of the air pressure kettle 1 and used for observing the change condition of a sample; as shown in fig. 2-6, an upper piston 6 and a lower pressing block 5 are respectively inserted into the upper end and the lower end of the air pressure kettle 1, and are used for clamping a test piece 7 from the upper end and the lower end; the pressure chamber is formed by the air pressure kettle 1, flange type window assemblies on the front side and the rear side of the air pressure kettle 1, an upper piston 6 and a lower pressing block 5; the upper part of the air pressure kettle 1 is provided with a piston hole, an upper piston 6 penetrates through the piston hole from the inside of the air pressure kettle 1, an upper pressure plate is connected to the top of the upper piston 6 through a fastener, and a press machine applies force to a test piece 7 through the upper pressure plate and the upper piston 6; the bottom of the lower pressing block 5 is connected with a lower pressing plate through a fastener, and the lower pressing block 5 and the lower pressing plate are bases of the testing device. Coaxial signal conversion ports are coaxially formed in the thick walls on the left side and the right side of the air pressure kettle 1 and communicated with the pressure bin, coaxial signal converters serving as multifunctional signal conversion devices are arranged in the coaxial signal conversion ports, coaxial cables with plugs are connected to two sides of each coaxial signal converter, and the outer portions of the coaxial cables with the plugs are fixedly sealed through sealing square flanges; the coaxial cable with the plug is used for replacing according to the experiment requirement, the inner side and the outer side of the coaxial cable are respectively used for connecting an inner probe and an external instrument, and signals in the pressure bin are transmitted to the outside of the pressure bin, so that the change characteristics of the test piece 7 can be monitored in real time. The pressure kettle is characterized in that air exhaust and injection holes are formed in the side wall of the pressure kettle 1, good sealing performance is achieved, external pipelines, namely an external air injection pressurizing pipeline and an air exhaust pipeline, are connected with a pressure sensor and a gas valve, and the pressure cabin can be vacuumized.
And a sealing ring is arranged between the upper piston 6 and the air pressure kettle 1.
The embodiment provides a multifunctional solid-gas coupling testing device which comprises an air pressure kettle 1, wherein flange type transparent window assemblies are arranged in openings on the front side and the rear side of the air pressure kettle 1, and an upper piston 6 and a lower pressing block 5 are respectively inserted into the upper end and the lower end of the air pressure kettle 1 and are used for clamping a test piece 7 from the upper end and the lower end; the top of the upper piston 6 is connected with an upper pressure plate, the top of the lower pressure block 5 is connected with a lower pressure plate, and the pressure kettle 1, the flange type window assemblies on the front side and the rear side of the pressure kettle 1, the upper piston 6 and the lower pressure block 5 form a pressure bin; the piston hole has been seted up on 1 upper portion of atmospheric pressure cauldron, goes up piston 6 and passes the piston hole from 1 inside of atmospheric pressure cauldron, and the top board passes through hexagon socket head cap screw and connects at 6 tops of top piston, and the holding down plate passes through hexagon socket head cap screw detachably and connects in the holding down plate bottom, and the base as this testing arrangement is connected to lower briquetting 5 and holding down plate through hexagon socket head cap screw after connecting. Coaxial signal conversion ports are coaxially formed in the thick walls of the left side and the right side of the air pressure kettle 1 and communicated with the pressure bin, coaxial signal converters are arranged in the coaxial signal conversion ports, coaxial cables with plugs are arranged on the two sides of each coaxial signal converter, the outer portions of the plugs are fixedly sealed through sealing square flanges, and the sealing square flanges are detachably connected to the air pressure kettle 1 through hexagon socket head bolts; the use of the coaxial cable with the plug was replaced as required by the experiment. Air exhaust and air injection holes are formed in the thick wall of the side face of the air pressure kettle 1, the external air injection pressurizing pipeline and the vacuum pump are connected through the three-way interface, and the external air injection pressurizing pipeline and the air exhaust pipeline are connected with a pressure sensor and a gas valve for observing and adjusting the pressure in the pressure bin and injecting experimental gas into the pressure bin.
Connecting a cable with a plug, which is positioned in the pressure bin, on the coaxial signal converter in the coaxial signal conversion port with the acoustic emission probe, connecting the cable with the plug outside the pressure bin with an acoustic emission preamplifier, and connecting the acoustic emission preamplifier with an acoustic emission data acquisition instrument; after the test piece 7 is placed, the acoustic emission probe is tightly attached to the periphery of the test piece 7, after the test piece 7 is placed stably, the transparent window 3 is installed, and then gas injection and subsequent experiment operations can be performed, so that the internal damage characteristics of the coal sample test piece 7 are measured, and the internal damage condition of the test piece 7 is monitored; meanwhile, the speckle camera is aligned to the transparent window, so that the speckle instrument can be used outside the pressure bin to measure the surface deformation of the test piece, and the surface deformation characteristic of the test piece 7 is obtained. The cable with the plug and located in the pressure bin can be replaced by a cable capable of being connected with the strain gauge, the strain gauge is connected, the cable with the plug and located outside the pressure bin is connected with the signal acquisition instrument, deformation data of the test piece 7 are monitored, deformation characteristics of the test piece 7 are measured, and a stress-strain curve is obtained. Because transparent windows are arranged on both sides of the testing device, a high-speed camera can be synchronously used for recording the dynamic damage process of the internal test piece in real time, and the change characteristics of the test piece under the action of different gas pressures can be observed.
Inside the pressure chamber, a test piece 7 is arranged between the lower pressing block 5 and the upper piston 6, and the size of the test piece in the embodiment is a standard cylindrical test piece of 50mm x 100 mm.
The coaxial signal converter is a converter with a sealing ring.
The flange type transparent window assembly comprises a sealing flange 2, a transparent window 3 and a stress flange 4, wherein the sealing flange 2 is connected to the side face of the air pressure kettle 1 through a fastener, a clamping groove is formed in the sealing flange 2, the transparent window 3 is installed inside the sealing flange 2, and the outer side of the transparent window 3 is fixed through the stress flange 4.
The utility model provides in this embodiment provide the transparent window subassembly of flange formula includes sealing flange 2, transparent window 3, atress flange 4, sealing flange 2 is through hexagon socket head cap screw connection in the side of atmospheric pressure cauldron 1, and it has the draw-in groove to open on sealing flange 2, and transparent window 3 carries out horizontal fixed through the draw-in groove, installs inside sealing flange 2, and the 3 outsides of transparent window are fixed through atress flange 4, and atress flange 4 is fixed on sealing flange 2 from sealing flange 2 inboards through hexagon socket head cap screw to it is fixed to seal transparent window 3.
And the sealing flange 2 is provided with a jackscrew. When the test piece is installed, the sealing flange 2 is taken down by the hexagon socket head cap screw for connecting the air pressure kettle 1, the transparent window 3 and the stressed flange 4 can be detached by jacking the jackscrew, and the internal space of the air pressure kettle 1 is exposed.
Sealing rings are arranged between the sealing flange 2 and the pressure bin, between the sealing flange 2 and the stress flange 4, and between the stress flange 4 and the transparent window 3, so that the air tightness of the device is ensured.
The air pressure kettle 1, the sealing flange 2 and the stress flange 4 are all made of high-strength stainless steel materials.
The lower pressing block 5, the upper piston 6, the upper pressing plate, the lower pressing plate and the sealing square flange are all made of 40Cr high-strength alloy materials.
The device is used for analyzing and researching the deformation and damage characteristics of the coal rock test piece under the action of high-pressure gas, and comprises the following specific steps:
the method comprises the following steps: and opening the pressure chamber after confirming that the pressure in the pressure chamber is zero. Firstly, whether pressure exists in the pressure bin is confirmed, and the confirmation mode is as follows: and opening a gas valve for exhausting gas in the pressure bin, observing a pressure sensor or a pressure gauge connected to an external pipeline connected with the gas exhaust and injection hole, and judging whether the display pressure is zero or not. If the pressure in the pressure chamber is high, whether the exhaust valve is opened or not needs to be confirmed. When the pressure value is zero, the hexagon socket head cap screw at the front end of the pressure cabin is completely screwed off, then the jackscrew 18 is screwed until the sealing ring on the sealing flange 2 is exposed, and the sealing flange 2 and the transparent window 3 can be integrally disassembled.
Step two: and (5) installing the test sample. The device is placed in the middle of a lower pressing plate of a press, and the press directly acts on an upper pressing plate in the experiment; then adhering the acoustic emission probe on the surface of the sample by using glue, then connecting a cable with a plug, which is positioned in the pressure bin, on the coaxial signal converter in the coaxial signal conversion port with the acoustic emission probe, placing the sample on the lower pressing block 5, and tightly adhering the acoustic emission probe to the periphery of the sample after the sample is placed; then the sealing flange 2, the transparent window 3 and the stressed flange 4 are installed into a whole and fixed by hexagon socket head cap screws. Connecting a cable with a plug outside the pressure bin with an acoustic emission preamplifier, and connecting the acoustic emission preamplifier with an acoustic emission data acquisition instrument, so that the crack development process inside the test piece can be acquired, and a destructive characteristic test is carried out; after the identification mark points are made on the surface of the test piece, the speckle camera is aligned to the transparent window on one side outside the pressure chamber, and the speckle camera is used for measuring the deformation of the surface of the test piece in real time to obtain the deformation characteristics of the test piece. And the high-speed camera is synchronously aligned to the transparent window on the other side of the pressure bin, so that the macro damage process of the shot test piece can be tracked.
Step three: the pressure bin is closed. The jackscrew on the sealing flange 2 is completely withdrawn, and the front end of the jackscrew is not exposed out of the end face of the sealing flange 2; and then plugging the sealing flange 2 which is integrally installed in the step two and is provided with the transparent window 3 into the openings at the front side and the rear side of the air pressure kettle 1, keeping the same axis when plugging, coating a small amount of lubricating oil on the sealing ring to lubricate the sealing ring before plugging, and aligning the sealing ring with the bolt hole when plugging. And the sealing flange 2 reaches the air pressure kettle 1 and then screws the hexagon socket head cap screw with the air pressure kettle 1.
Step four: and (5) injecting gas into the pressure bin. The air extracting and injecting hole at the side of the air pressure kettle 1 is connected with a vacuum pump and an external air injecting and pressurizing pipeline through a three-way joint. Firstly, closing the gas injection pressurization pipeline, opening the vacuum pump, closing the vacuum pump after reaching the vacuum environment required by the experiment, opening the gas injection pressurization pipeline, injecting gas into the pressure bin and pressurizing to obtain the high-pressure environment required by the experiment.
Step five: the experiment was started. And arranging a high-speed video camera or a speckle camera in front of the solid-gas coupling device, observing the change of the test piece in real time through the transparent window 3, and starting the press to pressurize the test piece until the test is finished. And after the test is finished, opening a gas valve for exhausting gas to exhaust the pressure in the pressure chamber, and then opening the pressure chamber according to the step one to take out the sample. The device can meet the requirements of solid-gas coupling experimental environment and research the coal-rock mechanical characteristics and deformation destruction characteristics under the action of different gas pressures.
Claims (9)
1. The utility model provides a multi-functional solid gas coupling testing arrangement which characterized in that: the device comprises an air pressure kettle, wherein flange type transparent window assemblies for observing the change of a sample are arranged in openings at the front side and the rear side of the air pressure kettle; an upper piston and a lower pressing block are respectively inserted at the upper end and the lower end of the air pressure kettle, and the air pressure kettle, the flange type window assemblies at the front side and the rear side of the air pressure kettle, the upper piston and the lower pressing block form a pressure bin; the upper part of the air pressure kettle is provided with a piston hole, an upper piston passes through the piston hole from the inside of the air pressure kettle, and an upper pressure plate is connected to the top of the upper piston through a fastener; the bottom of the lower pressing block is connected with a lower pressing plate through a fastener; coaxial signal conversion ports are coaxially formed in the thick walls on the left side and the right side of the air pressure kettle and communicated with the pressure bin, coaxial signal converters are arranged in the coaxial signal conversion ports, coaxial cables with plugs are connected to the two sides of the coaxial signal converters, and the outer portions of the coaxial cables with the plugs are fixedly sealed through sealing square flanges; and the thick wall on the side surface of the air pressure kettle is provided with an air exhaust and injection hole for connecting an external pipeline.
2. The multifunctional solid-gas coupling testing device of claim 1, wherein: the flange type transparent window assembly comprises a sealing flange, a transparent window and a stress flange, wherein the sealing flange is connected to the side face of the air pressure kettle through a fastener, a clamping groove is formed in the sealing flange, the transparent window is installed inside the sealing flange, and the outer side of the transparent window is fixed through the stress flange.
3. The multifunctional solid-gas coupling testing device of claim 2, wherein: and a sealing ring is arranged between the upper piston and the air pressure kettle.
4. The multifunctional solid-gas coupling testing device of claim 2, wherein: and the sealing flange is provided with a jackscrew.
5. The multifunctional solid-gas coupling testing device of claim 2, wherein: the coaxial signal converter is a converter with a sealing ring.
6. The multifunctional solid-gas coupling testing device of claim 2, wherein: sealing rings are arranged between the sealing flange and the pressure bin, between the sealing flange and the stress flange, and between the stress flange and the transparent window, so that the air tightness of the device is guaranteed.
7. The multifunctional solid-gas coupling testing device of claim 2, wherein: the air pressure kettle, the sealing flange and the stress flange are all made of high-strength stainless steel materials.
8. The multifunctional solid-gas coupling testing device of claim 2, wherein: the lower pressing block, the upper piston, the upper pressing plate, the lower pressing plate and the sealing square flange are all made of 40Cr high-strength alloy materials.
9. The multifunctional solid-gas coupling testing device of claim 2, wherein: the transparent window is made of an impact-resistant transparent material which can bear high pressure of at least 15MPa, the appearance is circular, and the permeability is 90%.
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| CN202220235383.0U CN217211927U (en) | 2022-01-28 | 2022-01-28 | Multifunctional solid-gas coupling testing device |
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| CN202220235383.0U CN217211927U (en) | 2022-01-28 | 2022-01-28 | Multifunctional solid-gas coupling testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116148036A (en) * | 2023-01-04 | 2023-05-23 | 安徽理工大学 | Experimental device and method capable of measuring strain field of loading process of gas-containing coal rock mass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116148036A (en) * | 2023-01-04 | 2023-05-23 | 安徽理工大学 | Experimental device and method capable of measuring strain field of loading process of gas-containing coal rock mass |
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