CN108169050B - Gas hydrate saturation monitoring devices - Google Patents
Gas hydrate saturation monitoring devices Download PDFInfo
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- CN108169050B CN108169050B CN201711453187.0A CN201711453187A CN108169050B CN 108169050 B CN108169050 B CN 108169050B CN 201711453187 A CN201711453187 A CN 201711453187A CN 108169050 B CN108169050 B CN 108169050B
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- electromagnetic valve
- sensors
- pressure
- pressurizing block
- temperature
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- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000012806 monitoring device Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 230000005484 gravity Effects 0.000 claims abstract description 18
- 238000003860 storage Methods 0.000 claims abstract description 8
- 239000003245 coal Substances 0.000 claims description 44
- 238000007789 sealing Methods 0.000 claims description 12
- 239000004484 Briquette Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 23
- 238000012544 monitoring process Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to the technical field of gas hydrate detection, and discloses a gas hydrate saturation monitoring device, which comprises: the device comprises a reaction kettle, a pressurizing block, a hydraulic cylinder, a plurality of gravity sensors, a constant-temperature water tank, a high-pressure water pump, a first electromagnetic valve, a high-pressure water pipe, a gas storage tank, a second electromagnetic valve, an air inlet pipe, a vacuum air pump, a third electromagnetic valve, an air exhaust pipe, a data acquisition module, a vacuum meter, a computer, a temperature controller, a barometer, a plurality of pressure sensors and a plurality of temperature sensors; the gas hydrate saturation monitoring device is simple in structure, automatic in control and convenient to use.
Description
Technical Field
The invention relates to the technical field of gas hydrate detection, in particular to a gas hydrate saturation monitoring device.
Background
High-pressure water is injected into the coal seam to enable gas and water to generate solid hydrate, so that the aim of preventing coal and gas outburst is fulfilled. The gas hydrate is an ice-like cage-shaped crystal compound formed by interaction of gases such as methane with smaller molecular weight and the like with water under certain conditions. Research results show that the hydrate in the coal body can improve the rigidity and cohesive force and has stronger damage resistance.
However, how to monitor the saturation state of the hydrate in the coal becomes the key for researching the hydrate of the coal, and the existing monitoring device has a complex structure and is inconvenient to use.
Disclosure of Invention
The invention provides a gas hydrate saturation monitoring device which can solve the problems in the prior art.
The invention provides a gas hydrate saturation monitoring device, which comprises: the device comprises a reaction kettle, a vacuum air pump, a data acquisition module, a vacuum meter, a barometer, a pressure sensor and a temperature sensor, wherein the pressure sensor and the temperature sensor are respectively connected with the data acquisition module through leads;
the briquette, the pressurizing block and the gravity sensors are all arranged in a reaction kettle, the gravity sensors are evenly arranged at the bottom of the briquette, the pressurizing block is positioned above the briquette, the pressurizing block is connected with the lower end of a hydraulic rod of a hydraulic cylinder, the constant-temperature water tank is sleeved on the circumferential outer side of the reaction kettle, a temperature controller is arranged at the bottom of the constant-temperature water tank, one end of a high-pressure water pipe penetrates through the pressurizing block in a sealing manner and is positioned above the briquette, the other end of the high-pressure water pipe is connected with a high-pressure water pump through a first electromagnetic valve, one end of an air inlet pipe penetrates through the pressurizing block in a sealing manner and is positioned above the briquette, the other end of the air inlet pipe penetrates through an air pressure gauge and a second electromagnetic valve in a sealing manner and is connected with a gas storage tank, one end of an air exhaust pipe penetrates through the pressurizing block in a sealing manner and is positioned above the briquette, the other end, the air pressure meter and the vacuum meter are respectively connected with the data acquisition module through leads, the data acquisition module is connected with the computer, and the hydraulic cylinder, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the temperature controller are respectively connected with the computer.
Preferably, the plurality of gravity sensors, the plurality of pressure sensors and the plurality of temperature sensors are all waterproof sensors.
Preferably, the bottom of the reaction kettle is provided with a water outlet, and the water outlet is provided with a one-way valve.
Compared with the prior art, the invention has the beneficial effects that:
the invention uses the pressurizing block to connect the hydraulic rod of the hydraulic cylinder, controls the hydraulic cylinder to apply pressure to the pressurizing block through the hydraulic rod according to the data of a plurality of pressure sensors in the reaction kettle, thereby applying pressure to the molded coal in the reaction kettle, controls the temperature controller to heat the constant temperature water tank according to the data of a plurality of temperature sensors, thereby heating the reaction kettle at constant temperature, monitors the gas pressure of the gas in the reaction kettle through the gas pressure gauge, controls the input of the gas through the second electromagnetic valve, controls the input of high-pressure water through the first electromagnetic valve, monitors the weight change of the molded coal through a plurality of weight sensors, when the weight of the molded coal is not changed any more and the gas pressure is increased, namely the gas hydrate is in a saturated state, the monitoring device has simple structure, automatic control and convenient use, applies different pressures to the molded coal through the hydraulic cylinder and the pressurizing block, the saturation of the gas hydrate is monitored by changing the temperature in the reaction kettle and monitoring the weight change of the briquette through a weight sensor.
Drawings
Fig. 1 is a schematic structural diagram of a gas hydrate saturation monitoring device provided by the invention.
Description of reference numerals:
1-molded coal, 2-reaction kettle, 3-pressurizing block, 4-hydraulic cylinder, 5-gravity sensor, 6-constant temperature water tank, 7-high pressure water pump, 8-first electromagnetic valve, 9-high pressure water pipe, 10-gas storage tank, 11-second electromagnetic valve, 12-air inlet pipe, 13-vacuum air pump, 14-third electromagnetic valve, 15-air exhaust pipe, 16-data acquisition module, 17-vacuum meter, 18-computer, 19-temperature controller and 20-barometer.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
As shown in fig. 1, a gas hydrate saturation monitoring apparatus provided in an embodiment of the present invention includes: the device comprises a briquette 1, a reaction kettle 2, a pressurizing block 3, a hydraulic cylinder 4, a plurality of gravity sensors 5, a constant temperature water tank 6, a high pressure water pump 7, a first electromagnetic valve 8, a high pressure water pipe 9, a gas storage tank 10, a second electromagnetic valve 11, an air inlet pipe 12, a vacuum air pump 13, a third electromagnetic valve 14, an air pumping pipe 15, a data acquisition module 16, a vacuum meter 17, a computer 18, a temperature controller 19, a barometer 20, a plurality of pressure sensors and a plurality of temperature sensors;
the molded coal production device comprises a molded coal 1, a pressurizing block 3 and a plurality of gravity sensors 5 which are all arranged in a reaction kettle 2, the gravity sensors 5 are evenly arranged at the bottom of the molded coal 1, the pressurizing block 3 is positioned above the molded coal 1, the pressurizing block 3 is connected with the lower end of a hydraulic rod of a hydraulic cylinder 4, a constant-temperature water tank 6 is sleeved on the circumferential outer side of the reaction kettle 2, a temperature controller 19 is arranged at the bottom of the constant-temperature water tank 6, one end of a high-pressure water pipe 9 penetrates through a pressurizing block 3 in a sealing manner and is positioned above the molded coal 1, the other end of the high-pressure water pipe 9 is connected with a high-pressure water pump 7 through a first electromagnetic valve 8, one end of an air inlet pipe 12 penetrates through the pressurizing block 3 in a sealing manner and is positioned above the molded coal 1, the other end of the air inlet pipe 12 sequentially passes through a barometer 20 and a second electromagnetic valve 11 and is connected with, the gravity sensors 5, the pressure sensors and the temperature sensors respectively penetrate through the pressurizing block 3 through leads in a sealing mode to be connected with the data acquisition module 16, the air pressure meter 20 and the vacuum meter 17 are respectively connected with the data acquisition module 16 through leads, the data acquisition module 16 is connected with the computer 18, and the hydraulic cylinder 4, the first electromagnetic valve 8, the second electromagnetic valve 11, the third electromagnetic valve 14 and the temperature controller 19 are respectively connected with the computer 18.
Preferably, the gravity sensors 5, the pressure sensors and the temperature sensors are all waterproof sensors, and the waterproof sensors avoid high-pressure water damage.
Preferably, the bottom of reaction kettle 2 is equipped with the outlet, is equipped with the check valve on the outlet, and the outlet can discharge the surplus water in the reaction kettle, avoids the surface of water to exceed the gravity sensor surface and causes buoyancy to lead to the test inaccurate.
Monitoring process and principle:
on putting into a plurality of gravity sensor 5 in reation kettle 2 with moulded coal 1 that detects the usefulness, arrange a plurality of temperature sensor and a plurality of pressure sensor around moulded coal 1, a plurality of gravity sensor 5, briquetting 3 is worn out to a plurality of temperature sensor and a plurality of pressure sensor's wire, install briquetting 3, connect the hydraulic stem of the hydraulic pump 4 of being connected with the briquetting 3, the high pressure water pipe 9 is ensured in the inspection, sealing connection between intake pipe 12 and blast pipe 15 and the briquetting 3, make first solenoid valve 8 simultaneously, second solenoid valve 11, third solenoid valve 14 is in the closed condition, put into constant temperature water tank 6 with reation kettle 2.
And starting the third electromagnetic valve 14 to enable the vacuum air pump 13 to work, sucking air in the pores and around the molded coal 1, controlling the vacuum degree in the molded coal 1 through a vacuum gauge, and closing the third electromagnetic valve 14 to stop vacuumizing after the vacuum degree reaches a set requirement.
Start first solenoid valve 8 and second solenoid valve 11, let in the high pressure water in to reation kettle 2 through high pressure water pump 7, let in gas through gas storage jar 10 in to reation kettle 2, simultaneously through the temperature in a plurality of temperature sensor monitoring reation kettle 2, through the temperature in temperature controller 19 control reation kettle 2, the pressure that the moulded coal received in the simultaneously through a plurality of pressure sensor monitoring reation kettle 2, reciprocate through 4 control hydraulic stem of pneumatic cylinder, thereby the pressure that moulded coal 1 received in the control reation kettle 2.
The gas shuttles among the pores of the molded coal 1 and forms crystal gas hydrate under the combined action of temperature, pressure and water, the gas pressure in the reaction kettle 2 is monitored to be reduced through the pressure gauge 20 due to the generation of the crystal gas hydrate, the computer 18 controls the second electromagnetic valve 11 to enable the gas storage tank 10 to input the gas into the reaction kettle 2, meanwhile, the weight of the molded coal 1 is increased due to the generation of the crystal gas hydrate, after the set time period is kept, the weight of the molded coal 1 is not increased any more, and meanwhile, when the gas pressure in the reaction kettle 2 is increased to exceed the set value of the pressure gauge 20, the gas hydrate is in a saturated state.
Because the lower part of the briquette 1 is provided with a plurality of weight sensors 5, redundant high-pressure water is left at the bottom of the reaction kettle, and the monitoring value of the weight sensors 5 cannot be influenced.
The invention uses the pressurizing block to connect the hydraulic rod of the hydraulic cylinder, controls the hydraulic cylinder to apply pressure to the pressurizing block through the hydraulic rod according to the data of a plurality of pressure sensors in the reaction kettle, thereby applying pressure to the molded coal in the reaction kettle, controls the temperature controller to heat the constant temperature water tank according to the data of a plurality of temperature sensors, thereby heating the reaction kettle at constant temperature, monitors the gas pressure of the gas in the reaction kettle through the gas pressure gauge, controls the input of the gas through the second electromagnetic valve, controls the input of high-pressure water through the first electromagnetic valve, monitors the weight change of the molded coal through a plurality of weight sensors, when the weight of the molded coal is not changed any more and the gas pressure is increased, namely the gas hydrate is in a saturated state, the monitoring device has simple structure, automatic control and convenient use, applies different pressures to the molded coal through the hydraulic cylinder and the pressurizing block, the saturation of the gas hydrate is monitored by changing the temperature in the reaction kettle and monitoring the weight change of the briquette through a weight sensor.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (3)
1. A gas hydrate saturation monitoring device comprising: the device comprises a reaction kettle (2), a vacuum air pump (13), a data acquisition module (16), a vacuum meter (17), a barometer (20), a pressure sensor and a temperature sensor, wherein the pressure sensor and the temperature sensor are respectively connected with the data acquisition module through leads, and the device is characterized by further comprising briquette coal (1), a pressurizing block (3), a hydraulic cylinder (4), a plurality of gravity sensors (5), a constant-temperature water tank (6), a high-pressure water pump (7), a first electromagnetic valve (8), a high-pressure water pipe (9), a gas storage tank (10), a second electromagnetic valve (11), an air inlet pipe (12), a third electromagnetic valve (14), an air exhaust pipe (15), a computer (18) and a temperature controller (19);
the molded coal (1), the pressurizing block (3) and the gravity sensors (5) are all arranged in the reaction kettle (2), the gravity sensors (5) are evenly arranged at the bottom of the molded coal (1), the pressurizing block (3) is positioned above the molded coal (1), the pressurizing block (3) is connected with the lower end of a hydraulic rod of the hydraulic cylinder (4), the thermostatic water tank (6) is sleeved on the circumferential outer side of the reaction kettle (2), a temperature controller (19) is arranged at the bottom of the thermostatic water tank (6), one end of a high-pressure water pipe (9) penetrates through the pressurizing block (3) in a sealing manner and is positioned above the molded coal (1), the other end of the high-pressure water pipe (9) is connected with a high-pressure water pump (7) through a first electromagnetic valve (8), one end of an air inlet pipe (12) penetrates through the pressurizing block (3) in a sealing manner and is positioned above the molded coal (1), the other end of the air inlet pipe (12) is connected with a second gas storage, one end of the exhaust pipe (15) penetrates through the pressurizing block (3) in a sealing mode and is located above the molded coal (1), the other end of the exhaust pipe (15) sequentially penetrates through a vacuum meter (17) and a third electromagnetic valve (14) to be connected with a vacuum exhaust pump (13), the gravity sensors (5), the pressure sensors and the temperature sensors penetrate through the pressurizing block (3) in a sealing mode through leads to be connected with a data acquisition module (16), a barometer (20) and the vacuum meter (17) are connected with the data acquisition module (16) through leads respectively, the data acquisition module (16) is connected with a computer (18), and the hydraulic cylinder (4), the first electromagnetic valve (8), the second electromagnetic valve (11), the third electromagnetic valve (14) and the temperature controller (19) are connected with the computer (18) respectively.
2. Gas hydrate saturation monitoring device according to claim 1, wherein the gravity sensors (5), pressure sensors and temperature sensors are all of the waterproof type.
3. The gas hydrate saturation monitoring device according to claim 1, wherein a water outlet is provided at the bottom of the reaction kettle (2), and a one-way valve is provided on the water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453187.0A CN108169050B (en) | 2017-12-28 | 2017-12-28 | Gas hydrate saturation monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453187.0A CN108169050B (en) | 2017-12-28 | 2017-12-28 | Gas hydrate saturation monitoring devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108169050A CN108169050A (en) | 2018-06-15 |
| CN108169050B true CN108169050B (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711453187.0A Expired - Fee Related CN108169050B (en) | 2017-12-28 | 2017-12-28 | Gas hydrate saturation monitoring devices |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110057715B (en) * | 2019-04-23 | 2020-05-19 | 青岛海洋地质研究所 | Calculation analysis method for hydrate saturation in experiment and numerical simulation processes |
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| CN201747338U (en) * | 2010-07-01 | 2011-02-16 | 青岛海洋地质研究所 | Natural gas hydrate simulating mining experimental apparatus |
| CN201749073U (en) * | 2010-07-01 | 2011-02-16 | 青岛海洋地质研究所 | Hydrate acoustical characteristic testing device |
| RU2438009C1 (en) * | 2010-05-04 | 2011-12-27 | Государственное образовательное учреждение высшего профессионального образования Российский государственный университет нефти и газа имени И.М. Губкина | Procedure for development of gas-hydrates deposits |
| CN103116077A (en) * | 2013-01-17 | 2013-05-22 | 中国科学院广州能源研究所 | Device for in site measurement of hydrate sediment resistivity |
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| CN105510143A (en) * | 2016-01-16 | 2016-04-20 | 黑龙江科技大学 | Experimental device for coal mass in-situ mechanical properties and gas hydrate saturation monitoring device and method based on same |
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| CN107063921A (en) * | 2017-03-03 | 2017-08-18 | 华南理工大学 | The device and method of hydrate concentration in a kind of quick measurement hydrate sediment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9519072B2 (en) * | 2006-05-11 | 2016-12-13 | Schlumberger Technology Corporation | Method and apparatus for locating gas hydrate |
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2017
- 2017-12-28 CN CN201711453187.0A patent/CN108169050B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| RU2438009C1 (en) * | 2010-05-04 | 2011-12-27 | Государственное образовательное учреждение высшего профессионального образования Российский государственный университет нефти и газа имени И.М. Губкина | Procedure for development of gas-hydrates deposits |
| CN201747338U (en) * | 2010-07-01 | 2011-02-16 | 青岛海洋地质研究所 | Natural gas hydrate simulating mining experimental apparatus |
| CN201749073U (en) * | 2010-07-01 | 2011-02-16 | 青岛海洋地质研究所 | Hydrate acoustical characteristic testing device |
| CN103116077A (en) * | 2013-01-17 | 2013-05-22 | 中国科学院广州能源研究所 | Device for in site measurement of hydrate sediment resistivity |
| CN105259003A (en) * | 2015-11-25 | 2016-01-20 | 中国科学院广州能源研究所 | Experiment device and method for synthesizing marine natural gas hydrate sample |
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| Title |
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