CN110749470B - A pressure compensation method and structure for a pressure-maintaining cabin - Google Patents
A pressure compensation method and structure for a pressure-maintaining cabin Download PDFInfo
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- CN110749470B CN110749470B CN201911172609.6A CN201911172609A CN110749470B CN 110749470 B CN110749470 B CN 110749470B CN 201911172609 A CN201911172609 A CN 201911172609A CN 110749470 B CN110749470 B CN 110749470B
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- 238000000034 method Methods 0.000 title abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 77
- 230000002441 reversible effect Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 239000013049 sediment Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 108010066057 cabin-1 Proteins 0.000 description 29
- 239000007789 gas Substances 0.000 description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Fluid Pressure (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明涉及一种保压舱压力补偿方法及结构，属于保压取芯设备技术领域，该方法利用化学反应产生的气体推动活塞改变保压舱有效容积进行补压，或者将化学反应产生的气体通入压力舱内进行补压；所述化学反应可为固液反应、液液反应或者不同压力下发生的可逆反应，也可是电解水反应。该保压舱压力补偿结构，包括反应釜和压力舱，所述反应釜通过管道与压力舱相连，管道上设有电磁阀，当压力舱内压力低于预设值时，电磁阀打开；当压力舱内压力大于或等于预设值时，电磁阀关闭。本发明能对压力舱进行补压，利于保证保压效果，对深海沉积物保压取芯具有重要意义。
The present invention relates to a pressure compensation method and structure for a pressure chamber, and belongs to the technical field of pressure coring equipment. The method utilizes the gas generated by chemical reaction to push a piston to change the effective volume of the pressure chamber for pressure compensation, or passes the gas generated by chemical reaction into the pressure chamber for pressure compensation; the chemical reaction may be a solid-liquid reaction, a liquid-liquid reaction, or a reversible reaction occurring under different pressures, or may be a water electrolysis reaction. The pressure compensation structure for the pressure chamber includes a reactor and a pressure chamber, wherein the reactor is connected to the pressure chamber through a pipeline, and a solenoid valve is provided on the pipeline. When the pressure in the pressure chamber is lower than a preset value, the solenoid valve opens; when the pressure in the pressure chamber is greater than or equal to the preset value, the solenoid valve closes. The present invention can compensate the pressure of the pressure chamber, which is beneficial to ensuring the pressure-maintaining effect, and is of great significance for pressure coring of deep-sea sediments.
Description
Technical Field
The invention relates to the technical field of pressure-maintaining coring equipment, in particular to a pressure compensation method and a pressure compensation structure of a pressure-maintaining cabin.
Background
After the submarine drilling machine acquires a sample in the deep sea, a fidelity cabin pressure maintaining control device is required to carry out pressure maintaining sealing on the sample in an in-situ environment. In the deep sea sediment pressure maintaining coring process, the fidelity cabin is inevitably leaked due to the problems of imperfect sealing means, inaccurate assembly, change of pressure difference between the inside and the outside of the drilling machine and the like. In this case, pressure compensation is particularly important.
Disclosure of Invention
The invention aims to provide a pressure compensation method and a pressure compensation structure for a pressure maintaining cabin, which can be used for carrying out pressure compensation on the pressure cabin and have important significance on pressure maintaining and coring of deep sea sediments.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The pressure compensation method for pressure maintaining cabin includes utilizing the gas produced in chemical reaction to push piston to change the effective volume of pressure maintaining cabin for pressure compensation, or introducing the gas produced in chemical reaction into pressure cabin for pressure compensation.
Wherein the chemical reaction is a solid-liquid reaction.
Or the chemical reaction is a liquid-liquid reaction.
Or the chemical reaction is a reversible reaction that occurs at different pressures.
Or the chemical reaction is an electrolyzed water reaction.
The utility model provides a pressurize cabin pressure compensation structure, includes reation kettle and pressure cabin, reation kettle links to each other with the pressure cabin through the pipeline, be equipped with pressure sensor in the pressure cabin.
Wherein, the pipeline is provided with an electromagnetic valve.
Or sodium peroxide is placed in the reaction kettle, and liquid water is arranged in the pressure cabin.
Or hydrochloric acid is placed in the reaction kettle, and the pressure cabin is provided with sodium carbonate aqueous solution.
Or a piston is arranged between the reaction kettle and the pressure cabin.
Compared with the prior art, the invention has the following beneficial effects:
the pressure cabin pressure maintaining device can be used for pressure supplementing of the pressure cabin, is beneficial to ensuring the pressure maintaining effect, and has important significance for pressure maintaining and coring of deep sea sediments.
Drawings
FIG. 1 is a schematic structural view of a first embodiment;
FIG. 2 is a schematic view of the structure of the pressure chamber for test;
fig. 3 is a schematic structural diagram of the second embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Example 1
According to the pressure compensation method of the pressure maintaining cabin disclosed by the embodiment, gas generated by chemical reaction is utilized to introduce the gas generated by the chemical reaction into the pressure cabin for pressure compensation.
The chemical reaction may be a solid-liquid reaction or a liquid-liquid reaction. Such as sodium peroxide and liquid water, hydrochloric acid and aqueous sodium carbonate.
The chemical reaction may also be a reversible reaction that occurs at different pressures. These reversible reactions are stable in equilibrium at a certain pressure. In the equilibrium state of the reaction, if the volumes of the gases before and after the reaction are different, the original equilibrium can be broken by changing the pressure. The pressure is reduced, and the reaction can be carried out towards the direction of increasing the gas volume, so that the pressure compensation on the pressure maintaining chamber side is realized. Three reversible reactions are listed below, with the equilibrium moving to the left if the pressure is reduced.
This example illustrates only the three reversible reactions above. However, in practical application, if the pressure is reduced, the reversible reaction that the balance moves towards the direction of increasing the gas volume can be applied to compensate the pressure of the pressure maintaining cabin.
As shown in fig. 1, the pressure compensation structure of the pressure maintaining cabin disclosed by the invention comprises a reaction kettle 2 and a pressure cabin 1, wherein the reaction kettle 2 is connected with the pressure cabin 1 through a pipeline 3, and the pipeline 3 is provided with an electromagnetic valve 4.
Wherein, pressure sensor is arranged in pressure chamber 1, and pressure gauge 5 is arranged on reaction kettle 2.
The application method of the pressure compensation structure of the pressure keeping chamber in the embodiment is as follows:
Mode one: sodium peroxide is placed in the reaction kettle 2, and liquid water is arranged in the pressure cabin 1. When the pressure in the pressure cabin 1 is detected to be smaller than a preset value, the electromagnetic valve 4 is opened, water in the pressure cabin 1 enters the reaction kettle 2 through the pipeline 3 and reacts with sodium peroxide in the reaction kettle 2 to generate oxygen, so that the pressure in the reaction kettle 2 is increased, the oxygen enters the pressure cabin 1 through the pipeline 3 to increase the internal pressure of the pressure cabin 1, when the internal pressure of the pressure cabin 1 reaches the preset value, the electromagnetic valve 4 is closed, the reaction is stopped in the reaction kettle 2, and meanwhile, the pressure in the pressure cabin 1 is kept stable.
Mode two: sodium peroxide is placed in the reaction kettle 2, and when the pressure in the pressure cabin 1 is detected to be smaller than a preset value, liquid water is added into the reaction kettle 2 through a liquid inlet of the reaction kettle 2, and the liquid water reacts with the sodium peroxide in the reaction kettle 2 to generate oxygen, so that the pressure in the reaction kettle 2 is increased; opening the electromagnetic valve 4, allowing oxygen to enter the pressure cabin 1 through the pipeline 3 to increase the internal pressure of the pressure cabin 1, closing the electromagnetic valve 4 when the internal pressure of the pressure cabin 1 reaches a preset value, cutting off an oxygen passage, and stopping injecting water into the reaction kettle 2, wherein the reaction is stopped in the reaction kettle 2.
Mode three: hydrochloric acid is placed in the reaction kettle 2, and the pressure cabin 1 is provided with sodium carbonate aqueous solution. When the pressure in the pressure cabin 1 is detected to be smaller than a preset value, the electromagnetic valve 4 is opened, sodium carbonate aqueous solution in the pressure cabin 1 enters the reaction kettle 2 through the pipeline 3 and reacts with hydrochloric acid in the reaction kettle 2 to generate carbon dioxide, so that the pressure in the reaction kettle 2 is increased, the carbon dioxide enters the pressure cabin 1 through the pipeline 3 to increase the internal pressure of the pressure cabin 1, when the internal pressure of the pressure cabin 1 reaches the preset value, the electromagnetic valve 4 is closed, a passage is cut off, the reaction is stopped in the reaction kettle 2, and meanwhile, the pressure in the pressure cabin 1 is kept stable.
The pressurizing mode can be applied to a pressure maintaining characteristic test platform of the pressure maintaining cabin of the corer to provide a high-pressure environment for the test cabin. As shown in fig. 2 in particular, the pressure chamber 1 includes a cylinder 11, an upper end sealing means for sealing an upper end of the cylinder 11, and a lower end sealing means for sealing a lower end of the cylinder 11.
The upper end sealing device comprises an upper end plug 12, the upper end plug 12 is in threaded connection with the cylinder 11, a medium channel 15 communicated with the inside of the cylinder 11 is reserved on the upper end plug 12, and the medium channel 15 is externally connected with an external hydraulic source.
The lower end sealing means comprises a flap valve. The flap valve is fixed in the cylinder 11 through the spring 6, the mounting ring 7 and the external thread part 17; the bottom surface of the valve seat 51 abuts against the male screw member 17, and the male screw member 17 is screwed to the inner wall of the cylinder 11.
The spring 6 is compressed between the valve clack 52 and the mounting ring 7, the inner wall of the cylinder 11 is provided with an inner step 16 for propping the mounting ring 7, the upper end of the spring 6 is propped against the mounting ring 7 to enable the mounting ring 7 to prop against the inner step 16, the lower end of the spring 6 is propped against the valve clack 52 to provide initial sealing pressure for the valve clack 52, and a sealing ring is arranged between the valve seat 51 and the cylinder 11.
The upper end plug 12, the external thread part 17 and the inner wall of the cylinder 11 are respectively provided with a sealing ring 14 and a retainer ring to form a seal. The sealing ring 14 is made of polyurethane sealing ring and can resist high temperature and high pressure.
The structure can be used for testing the strain of the flap valve in the pressure maintaining cabin and verifying the pressure maintaining capability of the flap valves with different structures and different shapes.
The male screw member 17 is hollow, and the outer surface of the valve flap 52 can be three-dimensionally laser scanned from the hollow portion by a 3D laser sensor to measure the three-dimensional strain of the outer surface of the valve flap 52.
Example two
The difference between this embodiment and the first embodiment is that: as shown in fig. 3, the pressure compensation structure of the pressure maintaining cabin in the embodiment comprises a reaction kettle 2 and a pressure cabin 1, wherein the reaction kettle 2 is connected with the pressure cabin 1 through a pipeline 3, a piston 8 is arranged in the pipeline 3, and the piston 8 plays a role in isolating gas from liquid.
The present embodiment can use chemically reactive gases to push the piston to change the effective volume of the pressure chamber 1 for pressure make-up.
The application method of the pressure compensation structure of the pressure keeping chamber in the embodiment is as follows:
Mode one: when the pressure in the pressure cabin 1 is smaller than a preset value, the electrolytic water reaction in the reaction kettle 2 is started, oxygen and hydrogen are generated by the electrolytic water reaction, the pressure in the reaction kettle 2 is increased, the piston 8 is pushed to move towards the pressure cabin 1 side, the effective volume of the pressure cabin 1 is reduced, and the internal pressure is increased. The electrolyzed water reaction compensates for pressure by controlling the power used.
Mode two: when the pressure in the pressure cabin 1 is reduced to a certain degree, the piston 8 moves towards the pressure cabin 1 for a certain distance, and meanwhile, the pressure in the reaction kettle 2 is reduced, so that the balance of the following reversible reaction moves leftwards, the pressure in the reaction kettle 2 is continuously increased, the piston 8 is continuously pushed to move towards the pressure cabin 1, the effective volume of the pressure cabin 1 is reduced, and the internal pressure is increased. If the supply is still insufficient, the gas in the reaction vessel 2 is heated, and the piston 8 is further moved toward the pressure chamber 1.
Due to the adoption of the balance movement principle, the compensation method can not completely maintain the original pressure of the pressure maintaining cabin, but can slow down the pressure drop to a certain extent. If the pressure is required to be maintained completely, a PID temperature control module is also required to be designed to control the temperature of the reversible reaction in the reaction kettle, accurately control the balance movement and realize 100% intelligent compensation of the pressure.
In this embodiment, the gas and liquid are separated by a piston, and the areas of the two sides of the piston are preferably different, so that the area of the piston on the gas side is designed to be larger, and the pressure on the gas side is amplified.
The high-pressure container can be safely used, and has great significance for reducing the cost of the reaction kettle.
The pressure cabin pressure compensation device can actively compensate pressure of the pressure cabin, can realize feedback adjustment, is beneficial to ensuring the pressure maintaining effect of the corer, and has important significance for pressure maintaining and coring of deep sea sediments.
There are, of course, many other embodiments of the invention that can be made by those skilled in the art in light of the above teachings without departing from the spirit or essential scope thereof, but that such modifications and variations are to be considered within the scope of the appended claims.
Claims (1)
1. The utility model provides a pressurize cabin pressure compensation structure which characterized in that: the pressure-maintaining cabin pressure compensation structure comprises a reaction kettle and a pressure cabin, wherein the reaction kettle is connected with the pressure cabin through a pipeline, a piston is arranged in the pipeline, a pressure sensor is arranged in the pressure cabin, and substances capable of undergoing reversible reaction under different pressures are placed in the reaction kettle;
the pressure cabin comprises a cylinder body, an upper end sealing device for sealing the upper end of the cylinder body and a lower end sealing device for sealing the lower end of the cylinder body;
The upper end sealing device comprises an upper end plug, the upper end plug is in threaded connection with the cylinder body, a medium channel communicated with the inside of the cylinder body is reserved on the upper end plug, and the medium channel is externally connected with an external hydraulic source;
The lower end sealing device comprises a flap valve which is fixed in the cylinder body through a spring, a mounting ring and an external thread part; the bottom surface of the valve seat is propped against the external thread part, the external thread part is in threaded connection with the inner wall of the cylinder body, the spring is compressed between the valve clack and the mounting ring, the inner wall of the cylinder body is provided with an inner step for propping against the mounting ring, the upper end of the spring is propped against the mounting ring to enable the mounting ring to prop against the inner step, and the lower end of the spring is propped against the valve clack to provide initial sealing pressure for the valve clack;
the reversible reaction is a reversible reaction in which the pressure is reduced and the balance is moved to the direction of increasing the volume of the gas; the piston is pushed by the gas generated by the chemical reaction to change the effective volume of the pressure maintaining chamber for pressure compensation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911172609.6A CN110749470B (en) | 2019-11-26 | 2019-11-26 | A pressure compensation method and structure for a pressure-maintaining cabin |
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| CN201911172609.6A CN110749470B (en) | 2019-11-26 | 2019-11-26 | A pressure compensation method and structure for a pressure-maintaining cabin |
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| CN110749470A CN110749470A (en) | 2020-02-04 |
| CN110749470B true CN110749470B (en) | 2024-11-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111477084B (en) * | 2020-03-26 | 2021-09-28 | 南方海洋科学与工程广东省实验室(广州) | Deep sea cold spring ecosystem formation evolution simulation system and method |
| CN111977005B (en) * | 2020-09-02 | 2023-10-13 | 国网江苏省电力有限公司苏州供电分公司 | A transmission line inspection drone based on 5G communication |
| CN114940250B (en) * | 2022-05-17 | 2024-07-02 | 浙江杰记科技有限公司 | Deep sea automatic pressure balance control system and method |
| CN115182694B (en) * | 2022-07-19 | 2023-05-09 | 平顶山天安煤业股份有限公司 | Fidelity coring gas self-gain pressure control structure, coring device and control method |
| CN118292788B (en) * | 2024-06-06 | 2024-08-06 | 中国煤炭地质总局勘查研究总院 | Pressure maintaining coring device for deep coal seam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239187A (en) * | 1998-07-14 | 1999-12-22 | 郑彦成 | Floatage-gravity perpetual motion machine |
| CN103127880A (en) * | 2011-11-27 | 2013-06-05 | 陈晓容 | Reaction type micro-exhaust device |
| CN108999583A (en) * | 2018-08-13 | 2018-12-14 | 四川大学 | Pressure maintaining cylinder top seal structure with explosion prevention function |
| CN109113615A (en) * | 2018-08-13 | 2019-01-01 | 四川大学 | Core fidelity cabin with pressure-keeping functions |
| CN211148096U (en) * | 2019-11-26 | 2020-07-31 | 四川大学 | A pressure-compensating structure for a pressure-holding chamber |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB693379A (en) * | 1950-10-19 | 1953-07-01 | Anglo Iranian Oil Co Ltd | Improvements relating to pressure core takers |
| JPH0617888B2 (en) * | 1987-12-23 | 1994-03-09 | 東伸工業株式会社 | Pressure balance regulator |
| GB9026585D0 (en) * | 1990-12-06 | 1991-01-23 | Exal Sampling Services Limited | Sampling system |
| CN100403007C (en) * | 2004-12-09 | 2008-07-16 | 中南大学 | Deep-sea suspended particulate matter and plankton concentration pressure-holding sampler |
| US11389171B2 (en) * | 2006-11-21 | 2022-07-19 | David S. Goldsmith | Integrated system for the infixion and retrieval of implants |
| WO2010129286A2 (en) * | 2009-04-27 | 2010-11-11 | M-I L.L.C. | Sampling device for oilfield applications |
| CN104654007B (en) * | 2015-03-16 | 2017-02-22 | 西北工业大学 | Ethylene supply device and flow measuring method thereof |
| CN208967055U (en) * | 2018-08-13 | 2019-06-11 | 四川大学 | A chainmail type flap valve |
| CN108952611B (en) * | 2018-10-22 | 2023-05-05 | 吉林大学 | Frozen wireline core drilling tool and method for ocean bottom |
| CN110307364B (en) * | 2019-05-31 | 2024-08-06 | 北京航天石化技术装备工程有限公司 | Axial flow check valve and control method thereof |
-
2019
- 2019-11-26 CN CN201911172609.6A patent/CN110749470B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239187A (en) * | 1998-07-14 | 1999-12-22 | 郑彦成 | Floatage-gravity perpetual motion machine |
| CN103127880A (en) * | 2011-11-27 | 2013-06-05 | 陈晓容 | Reaction type micro-exhaust device |
| CN108999583A (en) * | 2018-08-13 | 2018-12-14 | 四川大学 | Pressure maintaining cylinder top seal structure with explosion prevention function |
| CN109113615A (en) * | 2018-08-13 | 2019-01-01 | 四川大学 | Core fidelity cabin with pressure-keeping functions |
| CN211148096U (en) * | 2019-11-26 | 2020-07-31 | 四川大学 | A pressure-compensating structure for a pressure-holding chamber |
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