CN209945932U - A test instrument for rock gas high pressure adsorption - Google Patents
A test instrument for rock gas high pressure adsorption Download PDFInfo
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- CN209945932U CN209945932U CN201920556255.4U CN201920556255U CN209945932U CN 209945932 U CN209945932 U CN 209945932U CN 201920556255 U CN201920556255 U CN 201920556255U CN 209945932 U CN209945932 U CN 209945932U
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- 238000012360 testing method Methods 0.000 title claims abstract description 190
- 239000011435 rock Substances 0.000 title claims abstract description 111
- 238000001179 sorption measurement Methods 0.000 title claims description 38
- 239000007789 gas Substances 0.000 claims abstract description 329
- 239000001307 helium Substances 0.000 claims abstract description 74
- 229910052734 helium Inorganic materials 0.000 claims abstract description 74
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000011148 porous material Substances 0.000 claims description 6
- 239000010985 leather Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 abstract description 4
- 239000002250 absorbent Substances 0.000 abstract description 4
- 230000035882 stress Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 239000007919 dispersible tablet Substances 0.000 description 5
- 239000003826 tablet Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model discloses a test instrument for rock gas high pressure is absorbent. The device comprises a constant temperature system, a fixing unit for testing a rock test piece, a buffer gas tank, a helium gas tank, a test gas tank, an oil pump, a gas pipeline, a barometer and a gas switch, wherein the fixing unit comprises an upper cover, a unit main body, a lower seat and a fixing bolt; and a helium gas storage tank, a test gas storage tank, a helium switch and a test gas switch are arranged outside the constant temperature system, and the buffer gas tank is respectively communicated with the helium gas storage tank and the test gas storage tank through helium and test gas pipelines. It has the characteristics of simple structure, convenient assembly, safe and reliable work and the like.
Description
Technical Field
The utility model relates to a test instrument for rock gas high pressure is absorbent.
Background
The phenomenon of rock gas high-pressure adsorption has very important significance in many fields, for example, the gas high-pressure adsorption of coal rock/shale directly determines the size of the coal rock/shale gas reserves and further determines the economy of a mining project, and the gas high-pressure adsorption capacity of mudstone/salt rock is an important evaluation factor for evaluating the gas tightness and the gas tightness of the rock, and has important effects on the aspects of natural gas storage and carbon dioxide geological sequestration. The invention discloses a testing method and an instrument for measuring constant temperature adsorption of a rock mass and monitoring strain of the rock mass in Chinese patent specification CN105043920A, belonging to the testing method and the instrument for constant temperature and strain of the rock mass. According to the testing method, the constant-temperature adsorption capacity of the rock mass is tested by an indirect gravity method, meanwhile, transverse and longitudinal strain gages can be attached to the side surface of the tested sample, the strain condition of the rock sample is monitored simultaneously in the process that the rock sample achieves adsorption balance, and the relation between rock mass adsorption and rock mass micro stress is conveniently analyzed; and a plurality of adsorption tanks are additionally arranged to simultaneously carry out adsorption tests on rock samples in different particle size ranges, the particle size measurement range of the rock sample is wide, and the particle size test range covers 100 mu m-20 mm. The method for measuring the constant-temperature adsorption of the rock mass and monitoring the strain of the rock mass calculates the adsorption quantity of a sample by weighing a high-precision balance, and is different from the previous method for measuring the adsorption quantity by a volume method. The method can be used for determining the adsorption amount of the gas to the rock in laboratories, test enterprises and government departments. The testing instrument is single, the number of joints is small, the sealing performance of the system is enhanced, the operation is simple, the calculation method is simple and reliable, and the accuracy is high. At present, the rock gas high-pressure adsorption only focuses on the influence of conditions such as temperature and pressure of test gas on the rock adsorption, but does not focus on the influence of the state of the rock on the result, and particularly the change rule of the rock gas high-pressure adsorption under different underground environmental stress conditions cannot further improve the knowledge of the rock gas high-pressure adsorption.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned prior art, the to-be-solved technical problem of the utility model lies in providing a test instrument for rock gas high pressure is absorbent. It has the characteristics of simple structure, convenient assembly, safe and reliable work and the like. The gas high-pressure adsorption rule of the large rock centimeter-level test piece under different temperatures and gas pressures can be quickly, simply and conveniently obtained; the stress environment of the rock can be changed through confining pressure of the fixing unit, the underground stress state of the rock is truly simulated, the gas high-pressure adsorption rule of the rock in different stress states is searched, and powerful foundation guarantee is provided for improving gas exploitation efficiency of the rock rich in gas and increasing gas storage capacity of the sealed rock.
In order to solve the technical problem, the utility model provides a test instrument for rock gas high pressure is absorbent. The device comprises a constant temperature system, a fixing unit for testing a rock test piece, a buffer gas tank, a helium gas tank, a test gas tank, an oil pump, an oil way, a gas pipeline, a barometer and a gas switch, wherein the gas switch comprises an upper gas inlet switch, a lower gas inlet switch, a helium gas switch and a test gas switch, the gas pipeline comprises an upper gas inlet pipeline, a lower gas inlet pipeline, helium gas and a test gas pipeline, the fixing unit is arranged in the constant temperature system, the buffer gas tank, the oil pump, the oil way, the upper gas inlet pipeline, the lower gas inlet pipeline, the barometer and the upper gas inlet switch are arranged in the constant temperature system, the fixing unit comprises an upper cover, a unit main body, a lower seat and a fixing bolt, the unit main body is arranged on the lower seat, the upper cover is arranged on the unit main body, the test rock test piece is arranged in the unit main body, the test rock test piece is arranged on the lower seat, the upper end, an upper air inlet switch and an air pressure gauge are arranged on the upper air inlet pipeline, a lower air inlet switch is arranged on the lower air inlet pipeline, and the oil pump is communicated with the inner cavity of the unit main body of the fixed unit through an oil way; the constant temperature system is externally provided with a helium gas storage tank, a test gas storage tank, a helium switch and a test gas switch, the buffer gas tank is respectively communicated with the helium gas storage tank and the test gas storage tank through helium gas and test gas pipelines, and the helium gas and the test gas pipelines are respectively provided with the helium switch and the test gas switch.
The upper side and the lower side of the test rock test piece are both provided with the gas dispersible tablets, so that the gas inlet paths are subjected to dispersion treatment by the gas dispersible tablets arranged on the upper side and the lower side of the test rock test piece, the gas inlet paths are more uniform (as shown in figure 2), a pressure head is arranged on the test rock test piece, the test rock test piece is fixedly arranged on a lower seat through a base, and is sealed by a rubber leather sheath and a metal hoop.
The buffer gas tank is used for providing pressure for porosity testing, the upper end of the buffer gas tank is connected with a testing rock test piece of the inner cavity of the fixed unit main body through an upper gas inlet pipeline, and the lower end of the buffer gas tank is connected with the testing rock test piece of the inner cavity of the fixed unit through a lower gas inlet pipeline.
The helium gas storage tank is used for providing helium gas for the buffer gas tank and calibrating the pore volume of rocks, is communicated with the buffer gas tank through a helium gas and test gas pipeline, and is provided with a helium gas switch.
The test gas storage tank is used for providing test gas for the buffer gas tank, the test gas storage tank is communicated with the buffer gas tank through a helium and test gas pipeline, and a test gas switch is arranged on the helium and test gas pipeline.
The barometer is used for measuring the pressure of the gas, and the barometer is used for testing the gas pressure of the buffer gas tank.
The oil pump is used for providing confining pressure for the inner cavity of the unit main body of the fixed unit, and the oil pressure gauge is arranged on the oil pump and used for measuring the confining pressure of the inner cavity of the unit main body of the fixed unit.
The gas switch is used for controlling the flow of gas in the pipeline, wherein the upper gas inlet pipeline of the upper gas inlet switch control fixing unit, the lower gas inlet pipeline of the lower gas inlet switch control fixing unit, and the helium gas switch and the test gas switch respectively control a helium gas storage tank and a test gas storage tank to be gas pipelines for injecting gas into the buffer gas tank.
Compared with the prior art, the utility model discloses the beneficial effect who produces is: owing to adopted above-mentioned structure, during the use, the utility model discloses not only can obtain gas high pressure absorption law under the different temperature of large-scale rock centimetre level test piece and the gas pressure fast, portably, can also change the stress environment of rock through the fixed unit confined pressure above all, the stress state of true simulation rock in the underground to seek the gas high pressure absorption law of rock under the different stress state, improve gas exploitation efficiency, sealed rock increase gas storage capacity and provide powerful basic guarantee for being rich in gas rock.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the rock test piece testing device of the present invention;
in the figure: 1-upper cover, 2-unit main body, 3-test rock test piece, 4-fixing bolt, 5-lower seat, 6-base, 7-oil path, 8-oil pump, 9-constant temperature system, 10-helium and test gas path, 11-helium switch, 12-test gas switch, 13-test gas storage tank, 14-helium gas storage tank, 15-buffer gas tank, 16-upper gas inlet path, 17-barometer, 18-upper gas inlet switch, 19-lower gas inlet switch, 20-lower gas inlet path, 21-gas dispersing tablet, 22-pressure head, 23-metal hoop and 24-rubber leather sheath.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
Fig. 1 and 2 show various schematic structural diagrams of the present invention. As shown in fig. 1 to 2, the utility model provides a test instrument for rock gas high pressure adsorption. The device comprises a constant temperature system 9, a fixing unit for testing a rock test piece 3, a buffer gas tank 15, a helium gas storage tank 14, a test gas storage tank 13, an oil pump 8, an oil way 7, a gas pipeline, a barometer 17 and a gas switch, wherein the gas switch comprises an upper gas inlet switch 18, a lower gas inlet switch 19, a helium gas switch 11 and a test gas switch 12, the gas pipeline comprises an upper gas inlet pipeline 16, a lower gas inlet pipeline 20, helium gas and a test gas pipeline 10, the fixing unit is arranged in the constant temperature system 9, the buffer gas tank 15, the oil pump 8, the oil way 7, the upper gas inlet pipeline 16, the lower gas inlet pipeline 20, the barometer 17, the upper gas inlet switch 18 and the lower gas inlet switch 19, the fixing unit comprises an upper cover 1, a unit main body 2, a lower seat 5 and a fixing bolt 4, the unit main body 2 is arranged on the lower seat 5, the upper cover 1 is arranged on the unit main body 2, the unit main body 2 is internally provided with a test rock test piece 3, the test rock test piece 3 is arranged on the lower seat 5, namely, the upper side and the lower side of the test rock test piece 3 are provided with gas dispersible tablets 21 to disperse the gas inlet path, so that the gas inlet path is more uniform (as shown in fig. 2). The sum of all the volumes in the closed gas line formed by the upper inlet switch 18, the lower inlet switch 19, the helium switch 11 and the test gas switch 12, including the volume of the buffer gas tank 15 and the volume of the gas line connected thereto, has been determined by the standard as V1. The test rock specimen 3 is a cylindrical rock specimen having a diameter of 50cm and a height of 20 to 100 mm. The upper end and the lower end of the buffer gas tank 15 are respectively connected with the fixed unit through an upper gas inlet pipeline 16 and a lower gas inlet pipeline 20, an upper gas inlet switch 18 and a gas pressure gauge 17 are arranged on the upper gas inlet pipeline 16, a lower gas inlet switch 19 is arranged on the lower gas inlet pipeline 20, and the oil pump 8 is communicated with the inner cavity of the unit main body 2 of the fixed unit through an oil way 7; a helium gas storage tank 1 is arranged outside the constant temperature system 94. The test gas storage tank 13, the helium switch 11 and the test gas switch 12, the buffer gas tank 15 is respectively communicated with the helium gas storage tank 14 and the test gas storage tank 13 through a helium gas and test gas pipeline 10, and the helium gas and test gas pipeline 10 is respectively provided with the helium switch 11 and the test gas switch 12. The upper and lower sides of the test rock specimen 3 are provided with gas dispersing tablets 21, and the gas dispersing tablets 21 disperse gas and then uniformly permeate through the whole surface of the test rock specimen 3, but not through the air pipe. Thus, the upper and lower sides of the test rock specimen 3 are provided with the gas dispersible tablets 21 to disperse the gas inlet path, so that the gas inlet path is more uniform (as shown in fig. 2), the upper surface of the test rock specimen 3 is provided with the pressure head 22, the test rock specimen 3 is fixedly arranged on the lower seat 5 through the base 6, and is sealed by the rubber leather sheath 24 and the metal hoop 23. Namely, the upper side and the lower side of a test rock test piece 3 are provided with gas dispersible tablets 21, the lower side of the test rock test piece 3 is arranged on a base 6, the base 6 is arranged on a lower seat 5, a pressure head 22 is arranged on the test rock test piece 3, the test rock test piece 3 is fixedly arranged on the lower seat 5 through the base 6, and sealing is carried out by using a rubber leather sheath 24 and a metal hoop 23. The buffer gas tank 15 is used for providing pressure for porosity testing, the upper end of the buffer gas tank 15 is connected with the testing rock test piece 3 in the inner cavity of the fixed unit main body 2 through the upper gas inlet pipeline 16, and the lower end of the buffer gas tank 15 is connected with the testing rock test piece 3 in the inner cavity of the fixed unit through the lower gas inlet pipeline 20. The helium gas storage tank 14 is used for providing helium gas for the buffer gas tank 15 and calibrating the pore volume of rock, the helium gas storage tank 14 is communicated with the buffer gas tank 15 through a helium gas and test gas pipeline 10, and a helium gas switch 11 is arranged on the helium gas and test gas pipeline 10. The test gas storage tank 13 is used for providing test gas for the buffer gas tank 15, the test gas storage tank 13 is communicated with the buffer gas tank 15 through a helium and test gas pipeline 10, and a test gas switch 12 is arranged on the helium and test gas pipeline 10. The barometer 17 is used for measuring the pressure of the gas, and the barometer 17 is used for testing the gas pressure of the buffer gas tank 15. The oil pump 8 is used for providing confining pressure for the inner cavity of the unit main body 2 of the fixed unit, and the oil pressure gauge is arranged on the oil pump 8 and used for measuring the confining pressure of the inner cavity of the unit main body 2 of the fixed unit. The gas switch is arranged on the gas pipe,the helium switch 11 and the test gas switch 12 respectively control the helium gas storage tank 14 and the test gas storage tank 13 to be gas pipelines for injecting gas into the buffer gas tank 15.
The utility model discloses not only can obtain gas high pressure adsorption law under the different temperature of large-scale rock centimetre level test piece and the gas pressure fast, portably, can also change the stress environment of rock through the fixed unit confined pressure the most important, the stress state of true simulation rock underground to seek the gas high pressure adsorption law of rock under the different stress state, improve gas exploitation efficiency, sealed rock increase gas storage capacity and provide powerful basic guarantee for being rich in gas rock.
The utility model discloses a test principle is ideal gas equation:
PV＝nRT
where P is the pressure of the ideal gas, typically in atm or kPa; v is the volume of the ideal gas, and the unit is L;
n is the amount of gas substances in the ideal gas, and the unit is mol; r is an ideal gas constant, 8.314J/mol.K; t is the absolute temperature of the ideal gas in K. Firstly, helium gas is used as calibration gas, the pore volume of the rock is calculated by using the change of gas pressure, and then the test gas is used for filling the volume, wherein the gas molecules in the excess volume of the test gas compared with the helium test volume are the adsorption molecular weight. The sum of all the volumes in the closed gas line formed by the upper inlet switch 18, the lower inlet switch 19, the helium switch 11 and the test gas switch 12, including the volume of the buffer gas tank 15 and the volume of the gas line connected thereto, has been determined by the standard as V1. The test rock specimen 3 is a cylindrical rock specimen having a diameter of 50cm and a height of 20 to 100 mm.
A certain fixed temperature T1The following test procedures were used to test the porosity of the rock test piece 3:
(1) the diameter D and the height H of the rock test piece 3 are tested by a vernier caliper, and the volume V of the test piece is calculatedS：
(2) The installation of the fixing unit and the connection of the gas pipeline are shown in figure 1, the installation of the cylindrical steel test piece with the same volume as the test rock test piece 3 is carried out, all switches are determined to be closed, the constant temperature system 9 is switched on, and the fixed temperature T is set1。
(3) The manual oil pump 8 valve is opened to provide a confining pressure Pv in the fixed unit main body 2.
(4) The helium switch 11 is turned on to fill the buffer gas tank 15 with helium gas and provide a pressure (less than P)V) (ii) a The helium switch 11 is closed, and after the gas pressure is stable, the pressure P of the barometer 17 is recorded1；
(5) The lower air inlet switch 19 and the upper air inlet switch 18 are opened, and after the air pressure is stabilized, the pressure gauge 171 is recorded to display the pressure P2(ii) a According to an ideal gas equation, the equal volume V of the lower air inlet switch 19, the upper air inlet switch 18, the sealed pipeline and the gas dispersing tablet 21 is calculated according to the following formula2Comprises the following steps:
(6) closing the lower air inlet switch 19, closing and detaching the manual oil pump 8, disassembling the fixing unit, taking out the cylindrical steel test piece, installing the test rock test piece 3 in the unit main body 2 of the fixing unit, and connecting the gas pipeline as shown in figure 1.
(7) The manual oil pump 8 is installed and turned on, the oil for confining pressure is supplied to the fixed unit, and confining pressure Pv is applied.
(8) Opening the helium switch 11 provides pressure (less than P) to the buffer tank 15V) The helium switch 11 is closed, and after the gas pressure is stabilized, the reading of the barometer 17 is recorded as the pressure P1；
(9) The lower air inlet switch 19 and the upper air inlet switch 18 are opened, and after 6 hours, the pressure gauge 17 is recorded to display the reading of the pressure P3Calculating the pore volume V of the test rock specimen 3 according to the ideal gas equation and the following formula3Comprises the following steps:
(11) and closing and detaching the lower air inlet switch 19 and the upper air inlet switch 18, releasing the helium gas in the buffer gas tank 15 and the connected gas pipeline, and reconnecting the lower air inlet switch 19 and the upper air inlet switch 18 after 4 hours.
(12) Open the test gas switch 12 to fill the buffer tank 15 with test gas and provide pressure (less than P)V) (ii) a The helium switch 11 is closed, and after the gas pressure is stable, the pressure P of the barometer 17 is recorded1；
(13) The lower air inlet switch 19 and the upper air inlet switch 18 are opened, and after 6 hours, the pressure P displayed by the barometer 17 is recorded4The pore volume V of the test rock specimen 3 is calculated according to the ideal gas equation as follows3Comprises the following steps:
(14) test gas at temperature T1Confining pressure Pv and gas pressure P4The adsorption amount n per unit volume of the test rock specimen 3 is:
the operation steps are used for testing the adsorption n of the rock sample in unit volume under the action of fixed temperature, confining pressure and gas pressure, so that the adsorption n of the rock sample 3 in unit volume can be tested by changing the parameters of the constant temperature system 9 such as temperature, confining pressure, gas pressure and the like, and the change rule of the adsorption n can be obtained.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art.
Claims (9)
1. The utility model provides a test instrument for rock gas high pressure adsorption, it includes constant temperature system (9), a fixed unit for testing rock test piece (3), buffer gas jar (15), helium gas holder (14), test gas holder (13), oil pump (8), oil circuit (7), gas line, barometer (17) and gas switch, gas switch includes last air inlet switch (18), air inlet switch (19) down, helium switch (11) and test gas switch (12), gas line includes last air inlet line (16), air inlet line (20) and helium and test gas line (10) down, its characterized in that: a fixed unit, a buffer gas tank (15), an oil pump (8), an oil circuit (7), an upper gas inlet pipeline (16), a lower gas inlet pipeline (20), a barometer (17), an upper gas inlet switch (18) and a lower gas inlet switch (19) are arranged in the constant temperature system (9), the fixed unit comprises an upper cover (1), a unit main body (2), a lower seat (5) and a fixing bolt (4), the unit main body (2) is arranged on the lower seat (5), the upper cover (1) is arranged on the unit main body (2), the lower seat (5) is connected with the upper cover (1) through the fixing bolt (4), a test rock test piece (3) is arranged in the unit main body (2), the test rock test piece (3) is arranged on the lower seat (5), the upper end and the lower end of the buffer gas tank (15) are respectively connected with the fixed unit through the upper gas inlet pipeline (16) and the lower gas inlet pipeline (20), the upper gas inlet switch (18) and the barometer (17, a lower air inlet switch (19) is arranged on the lower air inlet pipeline (20), and the oil pump (8) is communicated with the inner cavity of the unit main body (2) of the fixing unit through an oil way (7); the constant temperature system (9) is externally provided with a helium gas storage tank (14), a test gas storage tank (13), a helium switch (11) and a test gas switch (12), the buffer gas tank (15) is communicated with the helium gas storage tank (14) and the test gas storage tank (13) through a helium gas and test gas pipeline (10), and the helium gas and test gas pipeline (10) is respectively provided with the helium gas switch (11) and the test gas switch (12).
2. A test instrument for high pressure adsorption of rock gases according to claim 1, wherein: the upper side and the lower side of the test rock test piece (3) are respectively provided with a gas dispersing tablet (21), a pressure head (22) is arranged on the test rock test piece (3), the test rock test piece (3) is fixedly arranged on the lower seat (5) through a base (6), and a rubber leather sleeve (24) and a metal hoop (23) are adopted for sealing.
3. A test instrument for high pressure adsorption of rock gases according to claim 1, wherein: the buffer gas tank (15) is used for providing pressure for porosity testing, the upper end of the buffer gas tank (15) is connected with a testing rock test piece (3) of the inner cavity of the fixed unit main body (2) through an upper gas inlet pipeline (16), and the lower end of the buffer gas tank (15) is connected with the testing rock test piece (3) of the inner cavity of the fixed unit through a lower gas inlet pipeline (20).
4. A test instrument for high pressure adsorption of rock gases according to claim 1, wherein: the helium gas storage tank (14) is used for providing helium gas for the buffer gas tank (15) and calibrating the pore volume of rock, the helium gas storage tank (14) is communicated with the buffer gas tank (15) through a helium gas and test gas pipeline (10), and a helium gas switch (11) is arranged on the helium gas and test gas pipeline (10).
5. A test instrument for high pressure adsorption of rock gases according to claim 1, wherein: the test gas storage tank (13) is used for providing test gas for the buffer gas tank (15), the test gas storage tank (13) is communicated with the buffer gas tank (15) through a helium and test gas pipeline (10), and a test gas switch (12) is arranged on the helium and test gas pipeline (10).
6. A test instrument for high pressure adsorption of rock gases according to claim 1, wherein: the barometer (17) is used for measuring the pressure of the gas, and the barometer (17) is used for testing the gas pressure of the buffer gas tank (15).
7. A test instrument for high pressure adsorption of rock gases according to claim 1, wherein: the oil pump (8) is used for providing confining pressure for the inner cavity of the unit main body (2) of the fixed unit, and the oil pressure gauge is arranged on the oil pump (8) and used for measuring the confining pressure of the inner cavity of the unit main body (2) of the fixed unit.
8. A test instrument for high pressure adsorption of rock gases according to claim 1, wherein: the gas switch is used for controlling the flow of gas in the pipeline, wherein an upper gas inlet switch (18) controls an upper gas inlet pipeline (16) of the fixing unit, a lower gas inlet switch (19) controls a lower gas inlet pipeline (20) of the fixing unit, and a helium switch (11) and a test gas switch (12) respectively control a helium gas storage tank (14) and a test gas storage tank (13) to be gas pipelines for injecting gas into the buffer gas tank (15).
9. A test instrument for high pressure adsorption of rock gases according to any one of claims 1 to 8, wherein: the test rock test piece (3) is a cylindrical rock test piece with the diameter of 50cm and the height of 20-100 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019200235560 | 2019-01-08 | ||
| CN201920023556 | 2019-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209945932U true CN209945932U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920556255.4U Withdrawn - After Issue CN209945932U (en) | 2019-01-08 | 2019-04-23 | A test instrument for rock gas high pressure adsorption |
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| Country | Link |
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| CN (1) | CN209945932U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959578A (en) * | 2019-01-08 | 2019-07-02 | 江苏城工建设科技有限公司 | A kind of test equipment and its test method for rock gas High Pressure Absorption |
| CN113740202A (en) * | 2021-09-01 | 2021-12-03 | 清华大学 | Volumetric adsorption measurement method and device |
-
2019
- 2019-04-23 CN CN201920556255.4U patent/CN209945932U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959578A (en) * | 2019-01-08 | 2019-07-02 | 江苏城工建设科技有限公司 | A kind of test equipment and its test method for rock gas High Pressure Absorption |
| CN109959578B (en) * | 2019-01-08 | 2024-04-30 | 江苏城工建设科技有限公司 | Testing instrument for rock gas high-pressure adsorption and testing method thereof |
| CN113740202A (en) * | 2021-09-01 | 2021-12-03 | 清华大学 | Volumetric adsorption measurement method and device |
| CN113740202B (en) * | 2021-09-01 | 2022-06-10 | 清华大学 | Volumetric adsorption measurement method and device |
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