CN111346319B - Isolated fire extinguishing system for underground coal mine - Google Patents
Isolated fire extinguishing system for underground coal mine Download PDFInfo
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- CN111346319B CN111346319B CN202010171494.5A CN202010171494A CN111346319B CN 111346319 B CN111346319 B CN 111346319B CN 202010171494 A CN202010171494 A CN 202010171494A CN 111346319 B CN111346319 B CN 111346319B
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- 239000003245 coal Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 230000029052 metamorphosis Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 238000009835 boiling Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 230000006399 behavior Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 229960001701 chloroform Drugs 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
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- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses an isolated fire extinguishing system for underground coal mines, which comprises a mine, wherein sliding cavities are formed in the inner walls of two ends of the mine, a first magnetic block is hermetically and slidably connected in each sliding cavity, the first magnetic block is elastically connected to the top of the corresponding sliding cavity through a spring, and the sliding cavities are divided into an upper cavity and a lower cavity by the first magnetic blocks. According to the invention, by arranging the water spraying mechanism, the first magnetic block, the second magnetic block, the telescopic air bag and the memory metal sheet, when the ignition temperature in a mine rises, the evaporating liquid is heated and evaporated to push the first magnetic block to move downwards, so that the second magnetic block and the sealing cover are driven to move downwards, the first magnetic block moves downwards to extrude air in the sliding cavity into the water storage cavity, so that water in the water storage cavity is extruded out, the fire is reduced, when the sealing cover moves downwards to the bottom in the mine, a closed space is formed, so that oxygen is isolated to extinguish the fire, the memory metal sheet deforms under heat, the telescopic air bag is stretched, and the air in the closed space is extracted, so that the speed of extinguishing the fire is further increased.
Description
Technical Field
The invention relates to the field of underground fire extinguishing equipment of coal mines, in particular to an isolated fire extinguishing system for an underground coal mine.
Background
The mine is a general term of a roadway, an underground chamber, equipment, a ground building and a structure forming an underground coal mine production system, along with the rapid development of social development, the demand for the coal mine is increased, so that a plurality of mines are created for mining the coal mine, and once a fire disaster happens carelessly and the fire disaster cannot be put out in time, an unpredictable serious result can be generated due to the fact that a large amount of coal exists in the mines.
Although current electronic fire extinguisher and alarm are advanced and convenient to use, its internally mounted has more sensor and electronic chip, not only the circuit installation is comparatively troublesome, but also need regularly arrange the microelectronics professional to overhaul and maintain it, and for the mine, because its self particularity, it is not safe within the non-mining professional gets into the mine, and the mine is inside narrow and the topography is complicated, the installation and the maintenance demand of electronic fire extinguisher and alarm can't be satisfied in the injection fixation, consequently need provide a fire extinguishing apparatus that can put out the internal fire of mine automatically.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an isolated fire extinguishing system for a coal mine underground, which is provided with a water spraying mechanism, a first magnetic block, a second magnetic block, a telescopic air bag and a memory metal sheet, when the ignition temperature in a mine rises, an evaporating liquid is heated to evaporate to push the first magnetic block to move downwards so as to drive the second magnetic block and a sealing cover to move downwards, the first magnetic block moves downwards to extrude air in a sliding cavity into a water storage cavity so as to extrude water in the water storage cavity and reduce the fire, when the sealing cover moves downwards to the bottom in the mine, a closed space is formed so as to isolate oxygen to extinguish the fire, the memory metal sheet is heated to deform, the telescopic air bag is stretched, and the air in the closed space is extracted, so that the fire extinguishing speed is further accelerated.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an isolated fire extinguishing system is used in pit in colliery, includes the mine, smooth chamber has all been seted up in the both ends inner wall of mine, the sealed sliding connection in smooth chamber has first magnetic path, first magnetic path passes through spring elastic connection at smooth intracavity top, just first magnetic path divide into epicoele and cavity of resorption with smooth chamber, it has the evaporating liquid to fill in the epicoele, the mine inside wall inlays and is equipped with the heat-conducting plate, the upper end and the evaporating liquid contact of heat-conducting plate, the top is provided with semi-cylindrical's sealed cowling in the mine, the equal fixedly connected with second magnetic path of two lateral wall lower extremes of sealed cowling, there is suction between second magnetic path and first magnetic path, be equipped with the water spray mechanism of water spray in the mine when catching fire in the interior bottom wall body of mine.
Preferably, the water spraying mechanism comprises a water storage cavity arranged at the bottom in the mine, water is filled in the water storage cavity, the water storage cavity is communicated with the lower end part of the sliding cavity through a gas guide cavity, water guide pipes communicated with the water storage cavity are arranged at the bottom in the mine, and the water inlet ends of the water guide pipes are submerged below the liquid level.
Preferably, a device cavity is formed in the wall body of the sealing cover, one end of the side wall of the device cavity is fixedly connected with a telescopic air bag, the telescopic air bag is connected with the other end of the device cavity through a memory metal sheet, and an air inlet communicated with the telescopic air bag is formed in the lower end of the sealing cover.
The invention has the following beneficial effects:
1. by arranging the first magnetic block and the water spraying mechanism, when a fire occurs in a mine, the temperature rises, heat is transferred to the evaporated liquid through the heat conducting plate, the evaporated liquid is heated to gradually reach the boiling temperature, evaporation is started, the air pressure in the upper cavity is increased, the first magnetic block is pushed to overcome the elastic force of the spring to move downwards, and therefore air in the lower cavity is squeezed into the water storage cavity through the air guide cavity, the water in the water storage cavity is sprayed out from the water guide pipe under the action of the increased air pressure, the fire behavior in the mine is initially reduced, and the fire behavior is prevented from spreading rapidly;
2. by arranging the first magnetic block, the second magnetic block and the sealing cover, when a fire is caught in a mine, the temperature rises, heat is transferred to evaporated liquid through the heat conducting plate, the evaporated liquid is heated to gradually reach the boiling temperature, evaporation is started, the pressure in the upper cavity is increased, the first magnetic block is pushed to overcome the elastic force of the spring to move downwards, the second magnetic block moves downwards synchronously along with the first magnetic block under the action of magnetic force, so that the sealing cover moves downwards gradually, when the first magnetic block moves downwards to the bottom in the sliding cavity, the second magnetic block also drives the sealing cover to move downwards to the bottom in the mine, so that a sealed space is formed between the sealing cover and the bottom in the mine, the external air is isolated, oxygen in the space is rapidly consumed, and the purpose of complete fire extinguishment is achieved;
3. through setting up flexible gasbag and memory sheetmetal, when the sealed cowling moves down to the minimum, the memory sheetmetal is close to the fire source, and its temperature risees rapidly and reaches the abnormal temperature, and the memory sheetmetal begins to warp this moment, becomes the ruggedness by original arc strip, and its pitch arc length shortens, consequently can stretch flexible gasbag for produce the negative pressure in the flexible gasbag, thereby inhale the air in the airtight space through the air inlet, and then can further accelerate the speed of putting out a fire.
Drawings
FIG. 1 is a schematic structural diagram of an isolated fire extinguishing system for underground coal mine according to the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is a schematic structural diagram of an isolated fire extinguishing system for a coal mine underground according to the present invention in a fire state;
FIG. 4 is a schematic structural view of embodiment 2;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
FIG. 6 is a schematic view showing the structure of example 2 in a fire state.
In the figure: 1 mine, 2 sliding cavities, 2a upper cavity, 2b lower cavity, 3 first magnetic blocks, 4 heat conducting plates, 5 sealing covers, 6 water storage cavities, 7 air conducting cavities, 8 aqueducts, 9 springs, 10 second magnetic blocks, 11 device cavities, 12 telescopic air bags, 13 memory metal sheets and 14 air inlets.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-3, an isolated fire extinguishing system for underground coal mine comprises a mine 1, wherein sliding cavities 2 are respectively arranged in the inner walls of two ends of the mine 1, a first magnet 3 is hermetically and slidably connected in the sliding cavities 2, the first magnet 3 is elastically connected to the top in the sliding cavities 2 through a spring 9, the sliding cavities 2 are divided into an upper cavity 2a and a lower cavity 2b by the first magnet 3, an evaporation liquid is filled in the upper cavity 2a, a heat conduction plate 4 is embedded in the inner side wall of the mine 1, the upper end part of the heat conduction plate 4 is in contact with the evaporation liquid, a semi-cylindrical sealing cover 5 is arranged at the top in the mine 1, the lower ends of two side walls of the sealing cover 5 are fixedly connected with second magnets 10, the second magnets 10 are opposite to the first magnets 3 in different poles, a suction force exists between the second magnets 10 and the first magnets 3, the heat conduction plate 4 is made of a non-magnetic shielding material, and cannot interfere with the magnetic force between the two magnets, a water spraying mechanism for spraying water into the mine 1 when the fire occurs is arranged in the inner bottom wall body of the mine 1.
Further, the evaporating liquid is trichloromethane, the boiling point of the trichloromethane is 61-62 ℃, when the mine 1 catches fire, heat can be transferred into the evaporating liquid through the heat conducting plate 4, the evaporating liquid is continuously evaporated in the process of approaching and reaching the boiling point temperature, the volume is greatly changed, and accordingly the air pressure in the upper cavity 2a is increased.
The water spraying mechanism comprises a water storage cavity 6 arranged at the bottom in the mine 1, water is filled in the water storage cavity 6, the water storage cavity 6 is communicated with the lower end part of the sliding cavity 2 through a gas guide cavity 7, water guide pipes 8 communicated with the water storage cavity 6 are arranged at the bottom in the mine 1, and the water inlet ends of the water guide pipes 8 are submerged below the liquid level.
Furthermore, the air guide cavity 7 and the water storage cavity 6 are communicated and positioned above the liquid level, so that water in the water storage cavity 6 cannot be sucked into the sliding cavity 2 in the process of resetting the first magnetic block 3 after the fire is extinguished, and negative pressure can be generated in the water storage cavity 6, so that water used for extinguishing the fire in the mine 1 is sucked into the water storage cavity 6 again under the action of air pressure, and the water guide cavity and the water storage cavity are conveniently recycled and water resources are saved.
In this embodiment, when a fire occurs in the mine 1, the temperature rises, the heat is transferred to the evaporating liquid through the heat conducting plate 4, the evaporating liquid is heated to gradually reach the boiling point temperature, so as to start evaporation, the air pressure in the upper chamber 2a increases, the first magnetic block 3 is pushed to overcome the elastic force of the spring 9 to move downwards, and the air in the lower chamber 2b is pushed into the water storage chamber 6 through the air guide chamber 7, so that the water in the water storage chamber 6 is sprayed out from the water guide pipe 8 under the action of the increased air pressure, the fire behavior in the mine 1 is initially reduced, and the fire behavior is prevented from spreading rapidly.
In the process, the second magnetic block 10 moves downwards synchronously along with the first magnetic block 3 under the action of magnetic force, so that the sealing cover 5 gradually moves downwards, when the first magnetic block 3 moves downwards to the bottom in the sliding cavity 2, the second magnetic block 10 also drives the sealing cover 5 to move downwards to the bottom in the mine 1, so that a closed space is formed between the sealing cover 5 and the bottom of the mine 1, the external air is isolated, oxygen in the space is rapidly consumed, and the purpose of thoroughly extinguishing fire is achieved.
When the temperature in the mine 1 is restored to the normal temperature, the evaporating liquid is gradually liquefied, so that negative pressure is generated in the upper cavity 2a, the negative pressure and the elastic force of the spring 9 act on the first magnetic block 3 at the same time, the first magnetic block 3 resets, the second magnetic block 10 and the sealing cover 5 are driven by the first magnetic block 3 to reset synchronously, and the mine 1 can be used continuously at the next time.
Example 2
Referring to fig. 4 to 6, the difference from the embodiment is: an apparatus cavity 11 is formed in the wall body of the sealing cover 5, one end of the side wall of the apparatus cavity 11 is fixedly connected with a telescopic air bag 12, the telescopic air bag 12 is connected with the other end of the apparatus cavity 11 through a memory metal sheet 13, and an air inlet 14 communicated with the telescopic air bag 12 is formed in the lower end of the sealing cover 5.
It should be noted that the memory metal sheet 13 is made into a folded shape at a high temperature and is stretched into an arc-shaped strip at a normal temperature, so that when the temperature in the mine 1 is normal temperature, the memory metal sheet 13 is made into an arc-shaped strip and the telescopic airbag 12 is in a normal state, and when the memory metal sheet 13 reaches the metamorphosis temperature, the crystal structure of the memory metal sheet changes and is restored into a folded shape, so that the telescopic airbag 12 is stretched; and the upper end of the sealing cover 5 is provided with an air outlet communicated with the right end part of the device cavity 11 for keeping constant pressure and avoiding the deformation of the telescopic air bag 12 blocked by air pressure.
In this embodiment, when the sealing cover 5 moves down to the lowest position, the memory metal sheet 13 is close to the position of the fire source, the temperature of the memory metal sheet is rapidly raised and reaches the metamorphosis temperature, at this moment, the memory metal sheet 13 begins to deform, and is changed into the folded shape from the original arc strip shape, and the length of the arc line is shortened, so that the telescopic air bag 12 can be stretched, negative pressure is generated in the telescopic air bag 12, air in the closed space is sucked through the air inlet 14, and the speed of extinguishing fire can be further accelerated.
After the sealing cover 5 is reset, the temperature of the memory metal sheet 13 is restored to be in a normal temperature state and is changed into an arc-shaped strip again, so that the telescopic air bag 12 is restored to be deformed for the next use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. The isolated fire extinguishing system for the underground coal mine comprises a mine (1) and is characterized in that sliding cavities (2) are formed in inner walls of two ends of the mine (1), a first magnetic block (3) is connected in the sliding cavities (2) in a sealing and sliding mode, the first magnetic block (3) is elastically connected to the inner top of the sliding cavities (2) through a spring (9), the sliding cavities (2) are divided into an upper cavity (2a) and a lower cavity (2b) by the first magnetic block (3), evaporating liquid is filled in the upper cavity (2a), a heat conducting plate (4) is embedded in the inner side wall of the mine (1), the upper end of the heat conducting plate (4) is in contact with the evaporating liquid, a semi-cylindrical sealing cover (5) is arranged on the inner top of the mine (1), second magnetic blocks (10) are fixedly connected to the lower ends of two side walls of the sealing cover (5), and suction force exists between the second magnetic blocks (10) and the first magnetic block (3), a water spraying mechanism for spraying water into the mine (1) when the fire occurs is arranged in the inner bottom wall body of the mine (1); a device cavity (11) is formed in the wall body of the sealing cover (5), one end of the side wall of the device cavity (11) is fixedly connected with a telescopic air bag (12), the telescopic air bag (12) is connected with the other end of the device cavity (11) through a memory metal sheet (13), and the lower end of the sealing cover (5) is provided with an air inlet (14) communicated with the telescopic air bag (12); the water spraying mechanism comprises a water storage cavity (6) arranged at the bottom in the mine (1), water is filled in the water storage cavity (6), the water storage cavity (6) is communicated with the lower end part of the sliding cavity (2) through an air guide cavity (7), water guide pipes (8) communicated with the water storage cavity (6) are arranged at the bottom in the mine (1), and the water inlet ends of the water guide pipes (8) are submerged below the liquid level; when the sealing cover (5) moves downwards to the lowest position, the memory metal sheet (13) is close to the position of a fire source, the temperature of the memory metal sheet is rapidly increased and reaches the metamorphosis temperature, at the moment, the memory metal sheet (13) begins to deform and is changed into a folding shape from an original arc strip shape, the length of an arc line is shortened, and therefore the telescopic air bag (12) can be stretched, negative pressure is generated in the telescopic air bag (12), and air in a closed space is sucked through the air inlet (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010171494.5A CN111346319B (en) | 2020-03-12 | 2020-03-12 | Isolated fire extinguishing system for underground coal mine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010171494.5A CN111346319B (en) | 2020-03-12 | 2020-03-12 | Isolated fire extinguishing system for underground coal mine |
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| CN111346319A CN111346319A (en) | 2020-06-30 |
| CN111346319B true CN111346319B (en) | 2021-10-29 |
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| CN109132285A (en) * | 2018-10-30 | 2019-01-04 | 汪洁 | A kind of fire-retardant dustbin of water-collecting type |
| CN109399010A (en) * | 2018-11-16 | 2019-03-01 | 杨浩 | A kind of fire-retardant garbage can of isolation type |
| CN109279235A (en) * | 2018-11-27 | 2019-01-29 | 叶烨 | A kind of fire-retardant dustbin of asphyxia type |
| CN109572390A (en) * | 2018-12-25 | 2019-04-05 | 束院生 | A kind of anti-self-combustion device of new-energy automobile battery |
| CN109568840A (en) * | 2018-12-27 | 2019-04-05 | 兰州西脉记忆合金股份有限公司 | It is a kind of can self-extinguishing cabinet |
| CN209838925U (en) * | 2019-05-08 | 2019-12-24 | 南昌工程学院 | Bionic multi-cavity sucker based on shape memory alloy driving |
| CN110182489A (en) * | 2019-05-24 | 2019-08-30 | 张德贵 | A kind of anti-burning dustbin of new-energy automobile |
| CN110193154A (en) * | 2019-06-14 | 2019-09-03 | 郑州轻工业学院 | The comprehensive fire fighting extinguisher of container-type lithium ion battery energy storage system |
| CN110466919A (en) * | 2019-08-26 | 2019-11-19 | 杜月琴 | A kind of temperature-sensitive is sprayed self-extinguishing dustbin |
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