NL2028338B1 - An integrated leak detection and sealing device for methane gas drainage drilled hole - Google Patents
An integrated leak detection and sealing device for methane gas drainage drilled hole Download PDFInfo
- Publication number
- NL2028338B1 NL2028338B1 NL2028338A NL2028338A NL2028338B1 NL 2028338 B1 NL2028338 B1 NL 2028338B1 NL 2028338 A NL2028338 A NL 2028338A NL 2028338 A NL2028338 A NL 2028338A NL 2028338 B1 NL2028338 B1 NL 2028338B1
- Authority
- NL
- Netherlands
- Prior art keywords
- pipe
- methane gas
- leak detection
- sealing
- left end
- Prior art date
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 238000007789 sealing Methods 0.000 title claims abstract description 54
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 11
- 239000002002 slurry Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007405 data analysis Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000010223 real-time analysis Methods 0.000 abstract description 4
- 238000005065 mining Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 59
- 238000010586 diagram Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention relates to the technical field of coal methane gas mining, and in particular, to an integrated leak detection and sealing device for methane gas drainage drilled hole, including a feeding pipe, a suction pipe and a drainage pump, where the left end of the feeding pipe extends into a collection hole, the 5 middle part of the feeding pipe is sleeved with a sealing element, the left end of the feeding pipe is distributed with through holes, the right end of the feeding pipe is provided with a guide pipe, a surface on the left end of the feeding pipe is fixedly connected to a scraper, the inside of the guide pipe is further provided with the suction pipe, and the right side of the guide pipe is provided with a drainage pump. A gas analyzer is configured to analyze methane gas in the collection hole for real-time analysis and measurement of a 10 concentration of the methane gas and other data during methane gas collection. Whether there is a methane gas leak is judged through data analysis, to achieve an effect of leak detection. The slurry is injected into the collection hole via the through hole on the surface of the feeding pipe, and the scraper is driven by a motor to rotate to evenly apply slurry on the inner wall of the collection hole to block a ?ssure on the inner wall of the collection hole.
Description
TECHNICAL FIELD The present invention relates to the technical field of coal methane gas mining, and in particular, to an integrated leak detection and sealing device for methane gas drainage drilled hole.
BACKGROUND The methane gas is generated through decomposition of cellulose and organic matter by anaerobic bacteria at the initial stage of coal generated from accumulated ancient plants. When coal was formed in a high-temperature and high-pressure environment, methane gas was generated continuously due to physical IO and chemical effects. The methane gas is a colorless and tasteless gas, but sometimes it smells like the scent of apple. This is due to the aromatic hydrocarbon gas and methane gas gushing out at the same time. The density of methane gas relative to air is 0.554. The density of methane gas is 0.716kg/m in the standard state. The permeability of methane gas is 1.6 times that of air. The methane gas is difficult to dissolve in water and cannot support combustion or maintain respiration. When it reaches a certain concentration, people may suffer from suffocation due to lack of oxygen, and combustion or explosion may occur. The methane gas presents in a free state or is dissolved in coal or surrounding rock.
The methane gas is a kind of clean and high-efficiency energy source. In the context of high oil prices across the world and unprecedented pressure on emission cut, it is urgent task to accelerate the development and utilization of methane gas as an important resource, to optimize China's energy structure.
The methane gas drainage is not only a regional measure for effectively preventing and controlling disasters caused by the methane gas in coal mines to achieve safety-oriented production, but also a major technical means to exploit coalbed methane in coal mining areas in China. The extraction and utilization of the methane gas in coal mines is not only conducive to enhancing the safety level of coal mines, but also conducive to increasing energy supply, thereby optimizing the energy structure, enhancing energy utilization efficiency, promoting energy conservation and emission cut, and protecting the ecological environment.
It is difficult for the existing methane gas drainage equipment to effectively seal the fissure on the inner wall of the collection hole during drainage operation, resulting in easy leakage of methane gas.
SUMMARY An objective of the present invention is to provide an integrated leak detection and sealing device for methane gas drainage drilled hole, to resolve the problem raised in the foregoing background.
To achieve the foregoing objective, the present invention provides a technical solution as follows: An integrated leak detection and sealing device for methane gas drainage drilled hole, comprising a feeding pipe, a suction pipe and a drainage pump, where the left end of the feeding pipe extends into a collection hole, the middle part of the feeding pipe is sleeved with a sealing element, the left end of the feeding pipe is distributed with through holes, the right end of the feeding pipe is provided with a guide pipe, a surface on the left end of the feeding pipe is fixedly connected to a scraper, the inside of the guide pipe is further provided with the suction pipe, the right end of the suction pipe is provided with the drainage pump, the left end of the feeding pipe is provided with a sealing lid, and the right side of the guide pipe is provided with a feeding pump.
2.
Furthermore, the inside of the guide pipe is provided with a collection pipe, the left end of the collection pipe extends into the feeding pipe, and the left end of the collection pipe extends through the sealing lid to reach the left side of the sealing lid. and the right end of the collection pipe extends through a side wall of the guide pipe to reach the outside of the guide pipe.
Furthermore, the right end of the collection pipe is provided with a gas analyzer.
Furthermore, the outer side wall of the sealing element abuts against the inner wall of the collection hole, and the sealing element is rotationally connected to the feeding pipe.
Furthermore, the scraper abuts against the inner wall of the collection hole.
Furthermore, the guide pipe is connected to the feeding pipe by using a rotary joint, a side wall of IO the guide pipe is fixedly connected to a motor, a shaft extension end of the motor is sleeved with a gear, the feeding pipe is sleeved with a gear ring, and the gear ring meshes with the gear.
Furthermore, the sealing lid is rotationally connected to the feeding pipe by using a bearing, and the left end of the suction pipe extends through the sealing lid to reach the left side of the sealing hd. Furthermore, the outer wall of the sealing lid is provided with a filter mesh.
Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: in an embodiment of the present invention, methane gas is extracted by using a drainage pump for methane gas collection, a gas analyzer is configured to analyze the methane gas in the collection hole for real-time analysis and measurement of a concentration of the methane gas and other data during methane gas collection; whether there is a methane gas leak is judged through data analysis, to achieve an effect of leak detection; in the case that there is a fissure on the inner wall of the collection hole, it is required to seal the fissure; the feeding pump is configured to transport shurry to the feeding pipe, and the slurry is injected into the collection hole via the through hole on the surface of the feeding pipe; at the same time, the motor is configured to drive the scraper to rotate to evenly apply the shury on the inner wall of the collection hole to block the fissure on the inner wall of the collection hole, to prevent the methane gas leak and achieve the sealing effect. thereby resolving the problem that it is difficult for the existing methane gas drainage equipment to effectively seal the fissure on the inner wall of the collection hole.
DESCRIPTION OF DRAWINGS FIG. 1 is a schematic structural diagram of an integrated leak detection and sealing device for methane gas drainage drilled hole in Embodiment 1; FIG. 2 is a schematic structural diagram of a feeding pipe of an integrated leak detection and sealing device for methane gas drainage drilled hole in Embodiment 1: FIG. 3 is a stereoscopic diagram of a feeding pipe of an integrated leak detection and sealing device for methane gas drainage drilled hole in Embodiment 1: Description of labels in the schematic diagrams: 1 - coal rock mass: 2 - collection hole: 3 - feeding pipe; 4 - sealing element; 5 - scraper; 6 - guide pipe; 7 - rotary joint; 8 - motor; 9 - gear ring: 10 - gear; 11 - sampling pipe; 12 - gas analyzer; 13 - suction pipe; 14 - drainage pump; 15 - sealing lid; 16 - bearing; 17 - filter mesh; 18 - feeding pump.
DESCRIPTION OF EMBODIMENTS The following clearly and completely describes the technical solution in the embodiments of the 40 present invention with reference to the accompanying drawings in the embodiments of the present invention.
“3. Apparently, the described embodiments are merely some but not all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. The present invention will be further described below with reference to the embodiments. Embodiment 1 Refer to FIGs. 1-3. In the embodiment of the present invention, an integrated leak detection and sealing device for methane gas drainage drilled hole includes a feeding pipe 3, a suction pipe 13 and a drainage pump 14, where a collection hole 2 is arranged on a coal rock mass 1, the left end of the feeding pipe 3 extends into the collection hole 2, the middle part of the feeding pipe 3 is sleeved with a scaling element 4, the outer IO wall of the sealing element 4 abuts against the inner wall of the collection hole 2, the sealing element 4 is rotationally connected to the feeding pipe 3, and the sealing element 4 is configured for the purpose of sealing. The left end of the feeding pipe 3 is distributed with through holes, a surface on the left end of the feeding pipe 3 is fixedly connected to a scraper 5, the scraper 5 abuts against the inner wall of the collection hole 2, and the right end of the feeding pipe 3 is provided with a guide pipe 6, and the guide pipe 6 is connected 15 to the feeding pipe 3 by using a rotary joint 7, a side wall of the guide pipe 6 is fixedly connected to a motor
8. a shaft extension end of the motor 8 is sleeved with a gear 10, and the feeding pipe 3 is sleeved with a gear ring 9. the gear ring 9 meshes with the gear 10; the motor 8 drives the gear 10 to rotate when it is running, and further drives the feeding pipe 3 to rotate through the gear ring 9; the inside of the guide pipe 6 is further provided with the suction pipe 13, the left end of the suction pipe 13 extends into the feeding pipe 3, and the 20 right end of the suction pipe 13 extends through a side wall of the guide pipe 6 to reach the outside of the guide pipe 6, the right end of the suction pipe 13 is provided with the drainage pump 14, and the drainage pump 14 is configured to extract the methane gas, to perform a methane gas collection operation. The left end of the feeding pipe 3 is provided with a sealing lid 15, the sealing lid 15 is connected to the feeding pipe 3 by using a bearing 16, the left end of the suction pipe 13 extends through the sealing lid 15 25 to reach the left side of the sealing lid 15, the outer wall of the sealing lid 15 is provided with a filter mesh
17. which is configured to filter dust, the right side of the guide pipe 6 is provided with a feeding pump 18, and a discharge port of the feeding pump 18 is connected with the guide pipe 6; in the case that there is a fissure on the inner wall of the collection hole 2, it is required to seal the fissure; the feeding pump 18 is configured to transport slurry to the feeding pipe 3, and the shury is injected into the collection hole 2 via the 30 through hole on the surface of the feeding pipe 3; and the motor 8 is started at the same time to drive the gear to rotate, and further drive the feeding pipe 3 to rotate by using the gear ring 9, so as to drive the scraper 5 to rotate and evenly apply the slurry on the inner wall of the collection hole 2 to block the fissure on the inner wall of the collection hole 2, thereby preventing methane gas leak and achieving the sealing effect. Embodiment 2 On the basis of Embodiment 1, the inside of the guide pipe 6 is provided with a collection pipe 11, the left end of the collection pipe 11 extends into the feeding pipe 3, and the left end of the collection pipe 11 extends through the sealing lid 15 to reach the left side of the sealing hd 15 to collect methane gas, the right end of the collection pipe 11 extends through a side wall of the guide pipe 6 to reach the outside of the guide pipe 6, the right end of the collection pipe 11 is provided with a gas analyzer 12, and the gas analyzer 12 is 40 configured to analyze the methane gas in the collection hole 2 for real-time analysis and measurement of a concentration of the methane gas and other data during methane gas drainage: if a leak occurs, the concentration of the methane gas and other data are bound to fluctuate greatly, and whether there is a methane gas leak is judged through data analysis, to achieve the effect of leak detection.
The working principle of the present invention. which combines both Embodiment 1 and Embodiment 2, is as follows: the feeding pipe 3 is inserted into the collection hole 2, the outer side wall of the sealing member 4 abuts against the inner wall of the collection hole 2, the sealing member 4 is configured for the purpose of sealing, the drainage pump 14 is configured to pump out methane gas, to perform a methane gas collection operation; the gas analyzer 12 is configured to analyze the methane gas in the collection hole 2 for real-time analysis and measurement of a concentration of the methane gas and other data during a methane gas collection operation: if a leak occurs, the concentration of the methane gas and other data are bound to fluctuate greatly, and whether there is a methane gas leak is judged through data analysis, to achieve the effect of leak detection; in the case that there is a fissure on the inner wall of the collection hole 2, it is required to seal the fissure; the feeding pump 18 is configured to transport the slurry to the feeding pipe 3, and the slurry is injected into the collection hole 2 via the through hole on the surface of the feeding pipe 3; at the same time, the motor 8 is started to drive the gear 10 to rotate, and further drive the feeding tube 3 to rotate through the gear ring 9, and thus driving the scraper 5 to rotate to evenly apply the slurry on the inner wall of the collection hole 2 to block the fissure on the inner wall of the collection hole 2, thereby preventing the methane gas leak and achieve the effect of plugging.
It should be noted that the feeding pipe 3, the suction pipe 13 and the drainage pump 14 in the present application are the application of the prior art.
What is the innovation of the present application lies in that it effectively resolves the problem that it is difficult for the existing methane gas drainage equipment to effectively seal the fissure on the inner wall of the collection hole.
The present invention and its implementation manners are schematically described above.
The description is not restrictive, what is shown in the drawings is merely one of the implementation manners of the present invention, and an actual structure is not limited to this.
Therefore, all structural modes and embodiments that are similar to those of the technical solution and that are uncreatively designed by a person of ordinary skill in the art under the enlightenment of the present invention and without departing from the creative purpose of the present invention shall fall within the protection scope of the present invention.
In addition, it should be understood that although the specification is described according to the embodiments, it is not the case that every embodiment only contains one independent technical solution.
Such a narrative mode of the specification is only for the sake of clarity.
A person skilled in the art should regard the specification as a whole, and the technical solution in each embodiment may also be combined as appropriate to form another implementation that can be understood by a person skilled in the art.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2028338A NL2028338B9 (en) | 2021-05-31 | 2021-05-31 | An integrated leak detection and sealing device for methane gas drainage drilled hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2028338A NL2028338B9 (en) | 2021-05-31 | 2021-05-31 | An integrated leak detection and sealing device for methane gas drainage drilled hole |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL2028338A NL2028338A (en) | 2021-08-30 |
| NL2028338B1 true NL2028338B1 (en) | 2022-06-24 |
| NL2028338B9 NL2028338B9 (en) | 2022-09-02 |
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ID=77558769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2028338A NL2028338B9 (en) | 2021-05-31 | 2021-05-31 | An integrated leak detection and sealing device for methane gas drainage drilled hole |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL2028338B9 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083613A (en) * | 2017-06-14 | 2018-12-25 | 西安科技大学 | A kind of leak detection of mash gas pumping drilling and leak stopping integrated apparatus |
| CN207194943U (en) * | 2017-09-30 | 2018-04-06 | 西安科技大学 | A kind of Drillhole gas pumping laboratory analog system |
| CN110056389A (en) * | 2019-05-29 | 2019-07-26 | 华北科技学院 | A kind of leak detection of mash gas pumping drilling and leak stopping integrated apparatus |
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2021
- 2021-05-31 NL NL2028338A patent/NL2028338B9/en active
Also Published As
| Publication number | Publication date |
|---|---|
| NL2028338A (en) | 2021-08-30 |
| NL2028338B9 (en) | 2022-09-02 |
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Effective date: 20220907 |