CN210513999U - Multifunctional adsorption and desorption instrument - Google Patents
Multifunctional adsorption and desorption instrument Download PDFInfo
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- CN210513999U CN210513999U CN201920507822.7U CN201920507822U CN210513999U CN 210513999 U CN210513999 U CN 210513999U CN 201920507822 U CN201920507822 U CN 201920507822U CN 210513999 U CN210513999 U CN 210513999U
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- adsorption
- desorption
- rock
- switch valve
- gas
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 56
- 238000003795 desorption Methods 0.000 title claims abstract description 39
- 238000012360 testing method Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001307 helium Substances 0.000 claims abstract description 15
- 229910052734 helium Inorganic materials 0.000 claims abstract description 15
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 8
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims description 6
- 239000011435 rock Substances 0.000 abstract description 44
- 239000007789 gas Substances 0.000 abstract description 34
- 238000002474 experimental method Methods 0.000 abstract description 14
- 239000011148 porous material Substances 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 9
- 239000012266 salt solution Substances 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000002245 particle Substances 0.000 description 9
- 238000011160 research Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000002336 sorption--desorption measurement Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model relates to a multi-functional absorption desorption appearance, this absorption desorption appearance comprise insulation can, absorption desorption analysis station, water bath, dewar bottle, vacuum pump, force (forcing) pump, carbon dioxide jar, helium gas jar, methane tank, high accuracy pressure display, master switch valve, quick evacuation pipeline. The device has the main advantages that gas adsorption and steam adsorption experiments in rock pores can be realized, desorption experiments of the rock pores under the pressure reduction condition can be realized, the requirements of adjusting the temperature of a water bath and steam adsorption of different salt solutions can be realized according to different experimental requirements, the measurement of adsorption and desorption data of rock samples in two stations or three stations can be simultaneously carried out, the rock adsorption and desorption test efficiency is improved, and a basis is provided for measuring the rock strength by gas and liquid.
Description
Technical Field
The invention belongs to the field of geotechnical engineering experimental instruments, and particularly relates to adsorption and desorption of gas and steam in rock pores, which is suitable for liquid and gas distribution rules in the rock pores under different conditions of different temperatures, different salt solution types and the like, and provides experimental basis for researching the influence of the gas and the liquid on the rock front strength.
Background
In nature, the formation of rocks is subject to a series of physicochemical changes, the changes shape the nature and shape of rocks, the macroscopic shape is formed in the rock formation process, the microstructures which can not be noticed by naked eyes are also formed, the microstructures not only influence the shape of rocks, but also influence the change of rock strength, such as the softening of soft rocks when water is encountered, the softening is generated on the surface of the soft rocks but also integrally softens, but the strength of the soft rocks is recovered after the soft rocks are dried, the physical phenomena all indicate the important role played by the rock microscopic pore structures in the rock, but the current research on the adsorption and desorption of rock pores is mostly focused on the research on shale gas and coal bed gas, and the experimental efficiency is greatly reduced because no matched test instrument exists in the research on more kinds of rocks, Severely restricting the development of the research on the microstructure of the rock. Therefore, according to the ideal gas law, the multifunctional adsorption and desorption instrument is designed and developed, the adsorption and desorption experiment aiming at the gas and steam in rock pores is emphasized, the adsorption condition of the rock under different temperatures, gases and salt solutions is met, the adsorption rule of the rock is explored, the research efficiency of the rock pores is improved, and the multifunctional adsorption and desorption instrument has very important scientific significance and application value for the follow-up research on the rock properties.
Disclosure of Invention
The invention aims to solve the problem that the existing adsorption and desorption experimental instrument for rocks under different conditions is not sufficient, and provides a gas and steam adsorption and desorption experimental instrument which can be used under the conditions of different temperatures, gases and salt solutions.
A multifunctional adsorption and desorption instrument comprises a heat insulation box, an adsorption and desorption analysis station, a water bath kettle, a Dewar flask, a vacuum pump, a pressure pump, a helium tank, a carbon dioxide tank, a methane tank, a high-precision pressure display, a main switch valve and a quick vacuum pumping pipeline.
1. Heat insulation box
The heat preservation box consists of a high-temperature-resistant, high-heat-conductivity and high-transparency container, a container cover, a water inlet hole, a water outlet hole, a high-sensitivity temperature display and a steam adsorption switch valve; the insulation can is provided with an inner layer and an outer layer, the insulation can is connected with the water bath kettle, and water with constant temperature flows through the interlayer of the box body to ensure the constant temperature in the box body; the insulation can is divided into two parts, wherein the first part is used for placing a salt solution container, and the second part is used for placing a salt solution container according to the experiment requirements: and (3) putting the gas into a Dewar flask added with liquid nitrogen for adsorption, and pouring distilled water into the container for adsorption of steam, wherein the liquid nitrogen height and the distilled water height are both higher than the height 1/3 of the test tube on the analysis station.
2. Adsorption desorption analysis station
The adsorption and desorption analysis station consists of a special test tube, a high-precision pressure display, a switch valve, a screw interface and an air cushion, and comprises three stations including two sample workstations and a saturation station, wherein the saturation station has a reference function, the analysis station is tightly connected with the test tube through screws to ensure air tightness, and the special test tube is resistant to high temperature and low temperature.
3. Water bath pot
The water bath kettle can control the temperature from 5 to 80 ℃, is in an open state when steam is adsorbed, and provides constant temperature for the heat preservation box.
3. Dewar flask
The Dewar flask is only used during gas adsorption, and is used for gas adsorption and desorption experiments, at the moment, the water bath kettle is in a closed state, liquid nitrogen is placed in the Dewar flask, and an ultralow temperature environment of-196 ℃ is kept.
4. Vacuum pump
The vacuum pump is a backing vacuum pump (mechanical pump).
5. Pressure pump
The booster pump provides required gas, steam pressure for the test tube in the workstation, shortens the sample greatly and reaches the absorption saturation time, improves the experimental efficiency.
6. Helium tank
Helium in the helium tank is the most difficult gas to liquefy, so when helium is selected as a backfill gas after vacuumizing, gas residues in rock pores are few after vacuumizing for multiple times, and experimental errors are reduced.
7. Quick vacuum-pumping pipeline
The quick vacuum-pumping pipeline can shorten the distance between the sample station and the vacuum system and accelerate the time for the sample station to reach vacuum.
The invention has the following advantages:
the gas adsorption and steam adsorption experiments in rock pores and the desorption experiments in the rock pores under the pressure reduction condition can be realized, and the steam adsorption requirements of adjusting the temperature of the water bath and different salt solutions can be realized according to different conditions.
The device can simultaneously measure the adsorption and desorption data of the rock samples at two or three stations, and provides a basis for measuring the strength of the rock by gas and liquid for improving the test efficiency of the adsorption and desorption of the rock.
Drawings
Fig. 1 is a schematic view of the overall composition structure of the present invention.
FIG. 2 is a schematic view of the construction of an adsorption/desorption station.
Fig. 3 is a structural schematic diagram of the incubator.
Fig. 4 is an enlarged view of the water bath.
Figure 5 is a schematic diagram of a dewar configuration.
A. Insulation can: A1. a first high clarity container; A2. a first container lid; A3. a second high clarity container; A4. a second container lid; A5. a high sensitivity temperature display; A6. a water outlet hole; A7. a water inlet hole; A8. steam adsorption switch valve.
B. And (4) an adsorption desorption analysis station.
B1. First adsorption and desorption workstation: B11. a special test tube I; B12. a first screw; B13. a first switch valve; B14. a high-precision pressure display.
B2. And a second adsorption and desorption work station: B21. a second special test tube; B22. a second screw; B23. a second switch valve; B24. and a second high-precision pressure display.
B3. Third adsorption and desorption reference station: B31. a third special test tube; B32. a third screw; B33. a third switch valve; B34. and a third high-precision pressure display.
B4. A rock particle sample.
C. A water bath kettle: C1. a water bath main body; C2. switch valve of water bath.
D. A Dewar flask.
E. A vacuum pump: E1. a vacuum pump main machine; E2. a vacuum pump switch valve; E3. and a pressure display.
F1. A booster pump.
G. A helium tank: G1. a helium tank; G2. a helium tank switch valve; G3. and a pressure display.
H. A carbon dioxide tank: H1. a carbon dioxide tank; H2. a carbon dioxide switch valve; H3. and a pressure display.
I. A methane tank: I1. a methane tank; i2 methane switch valve; I3. and a pressure display.
J. High precision pressure display.
K. And a main switch valve.
And L, a quick vacuum pumping pipeline.
Detailed Description
The present invention will be described clearly and completely with reference to the technical solutions of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
A multifunctional adsorption and desorption instrument comprises an A. heat insulation box, a B. adsorption and desorption analysis station, a C. water bath kettle, a D. Dewar flask, an E. vacuum pump, an F. pressure pump, a G. helium tank, an H. carbon dioxide tank, an I. methane tank, a J. high-precision pressure display, a K. main switch valve and an L. quick vacuum pumping pipeline. Firstly, B4. rock particle samples are prepared, the rock samples are crushed, then filter screens with different meshes are used for filtering, B4. rock particle samples with the meshes required by the experiment are selected, a high-precision electronic scale is used for weighing B4. rock particle samples for the first time, and data are recorded; b4. rock particle samples are placed into a B11. first special test tube and a B21. second special test tube, a B13. third special test tube is not placed, B4. rock particle samples are placed, the B11. first special test tube is connected with a B1. first adsorption and desorption work station, the B21. second special test tube is connected with a B2. second adsorption and desorption work station, the B13. third special test tube is connected with a B3. third adsorption and desorption reference station, a B12, first screw, a B22. second screw and a B32. third screw are tightened to ensure air tightness, and the B13, first switch valve, the B23, second switch valve and the B33, third switch valve are opened.
A multifunctional adsorption-desorption instrument has two adsorption functions of gas adsorption and steam adsorption, and has the advantages of complete early preparation,
in the gas adsorption experiment, liquid nitrogen is injected into a D-dewar bottle, a No. 4 container cover is opened, the D-dewar bottle is placed into a No. 3 high-transparency container, three B-adsorption and desorption workstations are placed into the D-dewar bottle, the test tube is immersed in the liquid nitrogen at least 1/3, and the No. 4 container cover is closed; opening K, a main switch valve, opening E2, a vacuum pump switch valve, vacuumizing a specially-made test tube, closing the E2, the vacuum pump switch valve after vacuumizing, opening G2., a helium tank switch valve, backfilling gas to the specially-made test tube, closing G2., the helium tank switch valve, vacuumizing again, after vacuumizing, opening H2, a carbon dioxide switch valve, opening F1, a pressure pump, after gas adsorption experiments, recording readings of J.high-precision pressure displays, B14, a first high-precision pressure display, B24, a second high-precision pressure display, B34, a third high-precision pressure display, closing F1, the pressure pump, closing K, the main switch valve, determining the gas adsorption quantity of B4. rock particle samples under constant temperature and different pressure conditions according to an ideal gas state equation, and determining the pore condition.
Opening A2. a first container cover, filling the salt solution to be tested into A1. a first high-transparency container, covering the A2. a first container cover, connecting the A. incubator with the C. water bath, opening C2. water bath switch valve, opening K. a main switch valve, opening E2. a vacuum pump switch valve, vacuumizing the special test tube, closing the E2. the vacuum pump switch valve after vacuumizing, opening G2. helium tank switch valve, backfilling the special test tube with gas, closing G2. helium tank switch valve, vacuumizing again, after vacuumizing, opening A8. steam adsorption switch valve, opening F1. a pressure pump, recording the indication number of a J. high-precision pressure display after the steam adsorption experiment, closing A8. steam adsorption switch valve, closing F1. pressure pump, closing K. the main switch valve, measuring constant temperature according to an ideal gas state equation, and (3) measuring the gas adsorption quantity of B4. rock particle samples under different pressure conditions to determine the porosity condition.
In the desorption experiment, after the gas adsorption experiment and the steam adsorption experiment are finished, a K-type main switch valve is opened, an E2-type vacuum pump switch valve is opened, the special test tube is subjected to pressure reduction desorption, then the E2-type vacuum pump switch valve is closed, the K-type main switch valve is closed, the readings of a J-type high-precision pressure display, the readings of a B14-type high-precision pressure display, the readings of a B24-type high-precision pressure display and the readings of a B34-type high-precision pressure display are recorded, and the gas desorption conditions of B4. rock particle samples under the conditions of constant temperature and different pressures are measured according to an ideal gas state equation.
Claims (3)
1. A multifunctional adsorption and desorption instrument is characterized by comprising a heat insulation box, an adsorption and desorption analysis station, a water bath, a Dewar flask, a vacuum pump, a pressure pump, a helium tank, a carbon dioxide tank, a methane tank, a high-precision pressure display, a main switch valve and a quick vacuum pumping pipeline.
2. The multifunctional adsorption and desorption instrument according to claim 1, which is characterized in that: the adsorption and desorption analysis station consists of a special test tube, a high-precision pressure display, a valve, a screw interface and an air cushion, and comprises three stations including two sample workstations and a reference station, wherein the reference station has a reference function, the upper end of the analysis station is tightly connected with the test tube through a screw, so that the air tightness is ensured, and the special test tube is resistant to high temperature and low temperature.
3. The multifunctional adsorption and desorption instrument according to claim 1, which is characterized in that: the vacuum pump is a preceding stage vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920507822.7U CN210513999U (en) | 2019-04-16 | 2019-04-16 | Multifunctional adsorption and desorption instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920507822.7U CN210513999U (en) | 2019-04-16 | 2019-04-16 | Multifunctional adsorption and desorption instrument |
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| Publication Number | Publication Date |
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| CN210513999U true CN210513999U (en) | 2020-05-12 |
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| CN201920507822.7U Expired - Fee Related CN210513999U (en) | 2019-04-16 | 2019-04-16 | Multifunctional adsorption and desorption instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324057A (en) * | 2021-12-13 | 2022-04-12 | 西安科技大学 | Experiment system and method for monitoring liquid nitrogen temperature control coal gas adsorption and desorption in real time |
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2019
- 2019-04-16 CN CN201920507822.7U patent/CN210513999U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324057A (en) * | 2021-12-13 | 2022-04-12 | 西安科技大学 | Experiment system and method for monitoring liquid nitrogen temperature control coal gas adsorption and desorption in real time |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200512 Termination date: 20210416 |