CN103184885A - Safe air regeneration device for coal mine underground emergency shelter - Google Patents
Safe air regeneration device for coal mine underground emergency shelter Download PDFInfo
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- CN103184885A CN103184885A CN2011104522844A CN201110452284A CN103184885A CN 103184885 A CN103184885 A CN 103184885A CN 2011104522844 A CN2011104522844 A CN 2011104522844A CN 201110452284 A CN201110452284 A CN 201110452284A CN 103184885 A CN103184885 A CN 103184885A
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Abstract
The invention relates to a safe air regeneration device for a coal mine underground emergency shelter. The device comprises an air regeneration unit, and is characterized in that the air regeneration unit comprises a shell and a potassium superoxide medicinal plate group arranged in the shell, wherein an air inlet passage and an air outlet passage are formed in the shell. According to the device, reaction temperature is greatly reduced, and the pressure of a cooling system is reduced. The air regeneration device has the beneficial effects that the oxygen yield can be controlled, the oxygen concentration can be kept between 18.5 to 22 percent all the time according to the number and the state of people in a pit, and energy resources are not required; the device is easy and convenient to operate, and secondary disasters caused by maloperation can be avoided; the device is high in safety; the system is simple; and the air regeneration cost can be greatly lowered, and huge social benefits and economic benefits after the device is popularized and used are created.
Description
Technical field
The present invention relates to urgent danger prevention device under a kind of coal mine, especially relate to urgent danger prevention place safety type air regeneration unit under a kind of coal mine.
Background technology
Urgent danger prevention place under the coal mine: after referring under coal mine emergency takes place, for wrecked personal security hedging provides the place of life support, by two kinds of refuge chamber and survival capsules, based on refuge chamber.
Air regenesis: about 576 liters of human body normal consumption every day oxygen, discharge 490 liters of carbon dioxide, discharge moisture 180g (this numerical value reduces significantly under the whole day inactive state).Oxygen content is at 20-21% in the normal atmosphere, and carbon dioxide content is 0.02%, and moisture is between 15-80%, when many people placed the small enclosed space, oxygen content gradually reduced in the air, and carbon dioxide content rises, moisture rises, and loses the primary condition of human survival very soon.Air regenesis keeps all kinds of indexs in the air exactly, makes foul air be regenerated as ozone.
Safety for protection people lives and properties; promote the safety of coal mines supportability; the requirement of " State Council is about the notice of the work of further strengthening safety in production " (No. (2010) 23, promulgated by the State Council); " monitoring and controlling system, personnel in the pit's navigation system, urgent danger prevention system, compressed air self-help system, the technical equipments such as system and channel of communication of suing and labouring that supply water will be installed in the colliery, and finish in 3 years.It is uninstalled to exceed the time limit, and provisionally suspends safety in production license, production licence in accordance with the law." in safe hedging six big systems, the urgent danger prevention system needs the new safe avoiding systems of building.
In January, 2011 national security supervision general bureau has issued " urgent danger prevention system implementation management temporary provisions under the coal mine " (No. (2011) 15, total coal dress of safety supervision) urgent danger prevention system under the coal mine has been done specific requirement: " in whole specified guard time; the oxygen content in the urgent danger prevention facility content environment should be between 18.5%--23.0%; gas concentration lwevel is not more than 1.0%; methane concentration is not more than 1.0%; carbonomonoxide concentration is not more than 0.0024%; temperature is not higher than 35 degrees centigrade, and humidity is not more than 85%."; " national security supervision general bureau, the Ministry of Science and Technology are about the notice of the science and technology support work of further strengthening safety in production " (No. (2011) 65, the total science and technology of safety supervision); require to adhere to preventing accident as safety in production scientific and technical research main direction; put forth effort to improve manufacturing enterprise and prevent, manage, monitor scientific and technological ability, carry out research and development around coal mine downhole safety hedging " six big systems " key technology and equipment.
At present, using in colliery all is that air regenesis is carried out in the compression oxygen supply, and for example: middle coal group refuge chamber in Xu Zhuan ore deposit is just with 60 oxygen cylinders.The compression oxygen system is made up of equipment such as oxygen cylinder group, bus-bar, automatic switchover console (also can manually), safety valve, warning devices usually.The compression oxygen-supplying technology has following deficiency:
1) the oxygen bottle many, have a big risk: the filling of hyperbaric oxygen bottle is dashed, major safety risks all can appear in links such as carrying and long term storage, and can not there be the situation of sharp pounding, high temperature to occur in its work, transportation and the storage condition, personnel are had relatively high expectations, each chamber uses the oxygen bottle to reach tens, whole mine has several to arrive the dozens of chamber, and hazards increase a lot.Oxygen cylinder is high-pressure bottle; wanting filling pressure in the bottle is the oxygen of 150 atmospheric pressure (15 MPa); bottled oxygen is strong oxidant, thus producing, transportation, handling and safeguard, if occur that oxygen bottle quality does not pass a test, improper use etc. is through regular meeting's explosion accident that sets off an explosion.In case accident occurs, its destructive power is quite big.For example certain unit, strikes a gas cylinder on another gas cylinder when unloading with trailer fortune dress oxygen cylinder, causes that two gas cylinders explode simultaneously, fly out farthest about 200 meters of gas cylinder fragment, the wall of next door storehouse is punched, and casualty accident has been caused in about 1000 * 800 millimeters of maximum hole.Since the second half year in this year, the ground oxygen cylinder explosion accident all took place in every month in China, and the accident lesson is startling.
2) maintainability is relatively poor: China's hyperbaric oxygen bottle leakage rate every day is 0.3%, can't long preservation, and for the facility that guarantees to take refuge can play a role, regularly (being generally every half a year) needs to change oxygen cylinder, increases maintenance cost and maintenance difficulties.
3) operating personnel are had relatively high expectations: the dozens of high-pressure oxygen cylinder constitutes the air supply system of a complexity, and any maloperation all can lead to grave consequences.Comprise: the temperature that produces when high speed pure oxygen gas flow and organic matter impact can cause fire; High pressure oxygen can cause moment supercharging in the enclosure space, might cause the supercharging disaster, and pressure leak process also easy same fuel gas out of my cabin is mixed into the quick-fried hazardous gas of easy height.Oxygen concentration was wayward etc. when instrumentation loses efficacy.
4) system complex.The compression oxygen generation system produces oxygen, and diffusion system and absorbing carbon dioxide and moisture technology is arranged, system complex, financial cost height.
5) air quality is not high.The compressed air oxygenerating technology, the air frowziness of seal cavity, air quality is very poor.
Summary of the invention
The technical problem to be solved in the present invention provides urgent danger prevention place safety type air regeneration unit under a kind of coal mine.Drawbacks such as the oxygen bottle that exists at present China's coal-mine underground emergency hedging place compression oxygenerating technology is many, have a big risk, system complex, the present invention utilizes potassium superoxide medicine plate absorbing carbon dioxide and moisture, the principle of oxygenous air is designed air regeneration unit, this device non-transformer does not have pressure, be not afraid of collision, be not afraid of maloperation, belong to the safety type device; This device not only provides the living environment of safety and comfort for the personnel of taking refuge under the coal mine, and has eliminated the risk of urgent danger prevention place compression oxygenerating technology under the coal mine, has improved the safety of coal mines supportability.
For solving the problems of the technologies described above, urgent danger prevention place safety type air regeneration unit comprises the air regenesis unit under a kind of coal mine of the present invention; This air regenesis unit comprises housing and is arranged on the interior potassium superoxide medicine plate group of housing that described housing is provided with inlet channel and outlet passageway.
Preferably, be provided with control air mass flow unit between described inlet channel and air regenesis unit.
Preferably, described control air mass flow unit is manual control air mass flow unit.
Preferably, described potassium superoxide medicine plate group comprises at least two blocks of potassium superoxide medicine plates that be arranged in parallel, and the distance between the potassium superoxide medicine plate is 15～25 millimeters.
Preferably, described potassium superoxide medicine plate group comprises 12～20 blocks of potassium superoxide medicine plates, and the distance between the potassium superoxide medicine plate is 18～22 millimeters.
Preferably, described potassium superoxide medicine plate group is made up of 18 blocks of potassium superoxide medicine plates, and the distance between the potassium superoxide medicine plate is 20 millimeters.
Preferably, described air regenesis unit is of a size of 300～400 millimeters of 200～300 millimeters * of 300～400 millimeters * (the wide * height of long *).
Preferably, described air regenesis unit is of a size of 350 millimeters of 260 millimeters * of 350 millimeters * (the wide * height of long *).
Preferably, described air regenesis unit is provided with three, and three air regenesis unit are vertically stacked;
Preferably, described air regenesis is provided with dividing plate between the unit, and this dividing plate is provided with air duct.
Preferably, described block board thickness is 35～45 millimeters;
Preferably, described block board thickness is 40 millimeters.
The present invention has following beneficial effect:
1) apparatus of the present invention have reduced the temperature when reacting significantly, have lowered the pressure of cooling system; The device interior reaction temperature is 45～60 degree, has reduced by 15～40%; The consumption of potassium superoxide medicine plate is reduced to 60～65/8 people/skies from 76/8 people/skies; Oxygen concentration remains between 19～21%, satisfies the condition of taking refuge and use in the down-hole fully.Air regeneration unit oxygen-producing amount of the present invention can be controlled, and remains oxygen concentration between 18.5-22% according to quantity and the state of personnel in the cave, and this is adjusted and does not need the energy;
2) easy and simple to handle, can not produce secondary disaster because of maloperation.
3) safety is good.Extra power supports such as this device non-transformer, this device and annex thereof can be because of when carrying vibrations, store and the common factor in down-hole such as workplace high temperature, high humidity, pernicious gas intrusion, long preservation and air regenesis quality when influencing its work and cause secondary disaster; Material after reaction is finished is harmless fully, can not cause any harm to personnel.
4) system is simple.This device can form air convection channel automatically, and absorbing carbon dioxide absorbs, moisture produces oxygen, for the personnel of taking refuge provide high-quality air; Do not have systems such as special absorbing carbon dioxide, oxygen decompression, can reduce the cost of air regenesis significantly, it is very huge to apply back social benefit and economic benefit.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail
Fig. 1 is a kind of specific embodiment structural representation of the present invention;
Oxygenic reaction figure when Fig. 2 is simulated test under the hot and humid situation;
Oxygenic reaction figure when Fig. 3 is simulated test under the low temperature and low humidity situation;
Fig. 4 is for using oxygen curve map in the existing potassium superoxide air regenesis unit process cabin;
Device start test oxygen curve map when Fig. 5 is simulated test;
Fig. 6 is the simulation chamber plan view of taking refuge of in-site modeling chamber test;
Fig. 7 is gas measuring point distribution map in the simulation chamber of taking refuge of in-site modeling chamber test;
Fig. 8 changes schematic diagram for the G2 measuring point oxygen concentration of in-site modeling chamber test;
Fig. 9 is the simulation chamber variations in temperature schematic diagram of in-site modeling chamber test;
Figure 10 changes schematic diagram for the simulation chamber humidity of in-site modeling chamber test;
Figure 11 changes schematic diagram for gas concentration lwevel in the simulation chamber of in-site modeling chamber test.
The specific embodiment
Embodiment 1
Referring to shown in Figure 1, urgent danger prevention place safety type air regeneration unit under a kind of coal mine of the present invention comprises upper air regeneration unit 100, air regenesis unit, middle part 200, air regenesis unit, bottom 300, dividing plate 400, manually controls air mass flow unit 500, inlet channel 600 and outlet passageway 700;
Described upper air regeneration unit 100 comprises housing 101 and is arranged on 18 blocks of potassium superoxide medicine plates 102 that vertically arrange in the housing 101, be parallel to each other between the potassium superoxide medicine plate 102 and potassium superoxide medicine plate 102 between distance be 20 millimeters; 102 of potassium superoxide medicine plates are air duct; The potassium superoxide medicine plate that the present invention uses is existing product, is for example produced by the permanent letter in Beijing chemical company; Described upper air regeneration unit 100 is of a size of 350 millimeters of 260 millimeters * of 350 millimeters * (the wide * height of long *);
Air regenesis unit, described middle part 200 comprises housing 201 and is arranged on 18 blocks of potassium superoxide medicine plates 202 that vertically arrange in the housing 201, be parallel to each other between the potassium superoxide medicine plate 202 and potassium superoxide medicine plate 202 between distance be 20 millimeters; 102 of potassium superoxide medicine plates are air duct; The potassium superoxide medicine plate that the present invention uses is existing product, is for example produced by the permanent letter in Beijing chemical company; Air regenesis unit, described middle part is of a size of 350 millimeters of 260 millimeters * of 350 millimeters * (the wide * height of long *);
Air regenesis unit, described bottom 300 comprises housing 301 and is arranged on 18 blocks of potassium superoxide medicine plates 302 that vertically arrange in the housing 301, be parallel to each other between the potassium superoxide medicine plate 302 and potassium superoxide medicine plate 302 between distance be 20 millimeters; 102 of potassium superoxide medicine plates are air duct; The potassium superoxide medicine plate that the present invention uses is existing product, is for example produced by the permanent letter in Beijing chemical company; Air regenesis unit, described bottom is of a size of 350 millimeters of 260 millimeters * of 350 millimeters * (the wide * height of long *);
The below of air regenesis unit, described bottom 300 sets gradually manual control air mass flow unit 500 and inlet channel 600; Described outlet passageway 700 is arranged on the top of upper air regeneration unit 100; Between described upper air regeneration unit 100, air regenesis unit, middle part 200 and the air regenesis unit, bottom 300 dividing plate 400 is set, this dividing plate 400 is provided with air duct 401; Described block board thickness is 40 millimeters;
By above-mentioned setting, make that the air duct height of whole device is the 350*3+40*2=1130 millimeter.
Operating principle is as follows:
Potassium superoxide (KO
2) be a kind of alkali metal oxide, itself be a kind of oxidant.Former powder is yellow powder, and 546 ℃ of fusing points begin to decompose at 145 ℃, can emit oxygen with water vapour and carbon dioxide reaction, and final reacting product is nontoxic potash.Potassium superoxide air regenesis and people's breathing entropy is complementary.The fundamental reaction principle is as follows:
4KO
2+2H
2O→4KOH+O
2↑
2KOH+CO
2→K
2CO
3+H
2O
4KO
2+3H
2O+2CO
2→2(K
2CO
3·3/2H
2O)+3O
2↑
From top reaction principle, potassium superoxide air regenesis technology has following characteristics as can be seen:
1) the air regenesis link is few.Potassium superoxide air assembly absorbing carbon dioxide generates oxygen, and is similar with human breathing, compares with the compressed air regenerative system, do not need the link of special absorbing carbon dioxide.
2) risk is little.Potassium superoxide air regenesis technology is passive reaction, and the no high pressure energy stores, and need not the outside power is provided, transportation, carrying and easy to operate.
3) safeguard simply.As long as the medicine plate is not revealed between the storage life good airproof performance, service free in 5 years period of validity.
4) moisture absorption purifies air.Potassium superoxide possesses certain absorption steam ability, and the seal cavity air quality is good.
Simulated test
The China's coal-mine mining depth is generally hundreds of rice, even going up km, temperature and high humidity contain pernicious gases such as methane, carbon monoxide, carbon dioxide and hydrogen sulfide, we have carried out a series of test at the particular surroundings under the coal mine at seal cavity for this reason.
1) medicine plate subsurface environment compatibility test.In the shelter, down-hole, common toxic and harmful mainly is methane, carbon monoxide and hydrogen sulfide etc.In order to check down-hole pernicious gas commonly used for the influence of potassium superoxide medicine plate, we are respectively different flow velocitys, the methane of variable concentrations, carbon monoxide and hydrogen sulfide gas be by potassium superoxide medicine plate, and through evidence: potassium superoxide does not absorb methane, carbon monoxide, can absorb H
2The S pernicious gas purifies underground air.
2) different temperatures, humid test.This summer,, we carried out high temperature and humidity test, ambient temperature 32 degree, humidity 80%, oxygen concentration 20.4～21.4% (see figure 2)s in south; This autumn has been carried out the low temperature and low humidity test in the north, ambient temperature 4～12 degree, humidity 20%, oxygen concentration 19-20.8% (see figure 3).This shows that living oxygen and temperature are irrelevant substantially, and be little with humidity effect.
3) controlled type oxygen supply test.Oxygen-producing amount is wayward when using existing air regeneration unit, and oxygen content reached 35% very soon at that time, and gas concentration lwevel also exceeds standard, and it is higher to produce heat, and the cabin internal pressure raises, the pressure release (see figure 4) of having to.Adopt device of the present invention to test again, oxygen concentration control is in 20.4～21.4% left and right sides (see figure 2)s, temperature of reactor reduces more than 20 degree, every day, the oxygen consumed plate reduced nearly 30%, absorb moisture simultaneously, air quality reaches the requirement of " colliery packaged type hardware survival capsule general technical specifications ".
4) device start test.The present invention needs certain start-up time, makes device potassium superoxide medicine plate begin reaction and produces heat, forms air stream; After device starts, automatically the bottom from enclosure space sucks muddy air, oxygen containing regeneration air is flowed out on top, and during on-test, 8 people run outside 100 meters and enter the sealed cabin body that is provided with air regeneration unit of the present invention, again air regeneration unit is started, prevailing circumstances temperature 12 degree, humidity 25%, oxygen concentration 20.7%, oxygen concentration reduces to 19.6% after one hour, and oxygen concentration begins the (see figure 5) that rises then.
In-site modeling chamber test report:
(1) test period: on December 5th, 2011, continue 12 hours;
(2) test number: 20 people;
(3) content of the test: test colliery simulation chamber air index and air regeneration unit
Air regenesis performance for test safety type air regeneration unit, on December 5th, 2011 China National Coal Group Corp., go up permanent letter chemical company of marine Yao development in science and technology Co., Ltd and Beijing and organized 20 colliery chamber ground simulation tests that the volunteer participates at last marine Yao development in science and technology Co., Ltd Stall factory building, the air index of chamber and experimenter's life parameters are simulated in the test colliery.Test begins to finish to 21:40 from 9:40, and oxygen content reaches ideal effect in the chamber air, and is existing as follows test report.
One, testing circumstance
The coal mine ground simulation chamber that is positioned at No. 37, Mei Fu road, Minhang District Mei Long town, Shanghai City adopts the thick insulation color steel of 75mm to build inside dimension (length) 7500x 3000x2000, cumulative volume 45m
3For guarantee test carries out smoothly, chamber adopts gas-tight design, but heating and moistening.
Colliery simulation chamber is divided into personnel chamber and transition chamber, and a flexible door curtain is carried additionally in the centre, two-layer air tight door, and one of observation port holds 20 people at most.This test shares two air regeneration units, respectively places a (see figure 6) simulation chamber front (on the right side) back row (centre).Be placed with chair in the chamber, playing card and song amusement equipment.Test initial environment: oxygen concentration 20.6%, temperature 16 degree, humidity 65%.Adopt M40 portable comprehensive tester to measure gases such as oxygen, utilize the MA carbon dioxide meter to measure gas concentration lwevel.
Two, experimental data
1, oxygen is in the chamber spatial distributions
We have selected 21 test points, distribute to see Fig. 7.
Carried out 5 tests altogether, it is 0.1% that the oxygen concentration in each place that the same time records differs minimum, is 0.4% to the maximum, average out to 0.2% (each measuring point oxygen content sees the following form 1).Test CO at ordinary times
2And O
2Sample point is G2; Temperature, humidity sample point are D2.
Table 1: each measuring point oxygen content table
The test just begin, the device 1 hour start-up time, oxygen begins content and drops to minimum point 19.5%, after maintain near 20.5% always; Be example with the G2 measuring point, oxygen concentration changes schematic diagram referring to Fig. 8.
2, temperature and humidity
The reducing temperature and humidity measure has been adopted in experiment this time, adopts the desiccant moisture absorption, uses the 20w blower fan, and humidity is dropped to 78%, feels good.The variations in temperature schematic diagram is referring to Fig. 9; Humidity changes schematic diagram referring to Figure 10.
3, gas concentration lwevel
This is tested gas concentration lwevel and changes schematic diagram such as Figure 11.
4, the consumption of materials
Potassium superoxide medicine plate: 36 (45)
Soda lime: 35 kilograms
Mineral water: 250g, totally 60 bottles
Food: biscuit 20 bags, 40 bottles of 250g tinned fruits, 50g salted vegetables 50 bags, 40 of ham sausage.
Three, conclusion (of pressure testing)
During on-test, 20 gays advance the chamber test, and 4 womans assist in the chamber outside.In the middle of the test, have two male experimenters to end test because of thing, after changed two womans and participated in test.Through overtesting, everybody is consistent to think, air regenerative system reliably, the air odorless, tasteless, comfort level is good.Can draw to draw a conclusion by testing us:
1, product of the present invention can satisfy in January, 2011 national security supervision general bureau and issued the specific requirement of " urgent danger prevention system implementation management temporary provisions under the coal mine " (No. (2011) 15, total coal dress of safety supervision) to urgent danger prevention system under the coal mine." in whole specified guard time; the oxygen content in the urgent danger prevention facility content environment should be between 18.5%--23.0%; gas concentration lwevel is not more than 1.0%; methane concentration is not more than 1.0%; carbonomonoxide concentration is not more than 0.0024%; temperature is not higher than 35 degrees centigrade, and humidity is not more than 85%.”
2, safe regenerating unit dependable performance is produced the oxygen safety and stability and is evenly distributed.Test that oxygen content drops to minimum point 19.5% after one hour, after the air regeneration unit operate as normal, oxygen content is between 20.4--20.9%.In each position of chamber, oxygen content is evenly distributed, and same time measurement data differ and are no more than 0.4%.
3, air quality is good, step for regeneration is few.The air odorless, tasteless feels comfortable.Chemistry air quality regeneration absorbing carbon dioxide and moisture have reduced the operation of special absorbing carbon dioxide.Operation is few, means after this project application to produce huge economic benefit.
The word in the description orientation that adopts herein " on ", D score, " left side ", " right side " etc. all be for the convenience that illustrates based on the orientation shown in the drawing in the accompanying drawing, these orientation may be because the disposing way of device and different in actual device.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give exhaustive to all embodiments.Everyly belong to the row that apparent variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.
Claims (10)
1. urgent danger prevention place safety type air regeneration unit under the coal mine comprises the air regenesis unit; It is characterized in that: this air regenesis unit comprises housing and is arranged on the interior potassium superoxide medicine plate group of housing that described housing is provided with inlet channel and outlet passageway.
2. air regeneration unit according to claim 1 is characterized in that: be provided with control air mass flow unit between described inlet channel and air regenesis unit.
3. air regeneration unit according to claim 2 is characterized in that: described control air mass flow unit is manual control air mass flow unit.
4. according to arbitrary described air regeneration unit in the claim 1,2 or 3, it is characterized in that: described potassium superoxide medicine plate group comprises at least two blocks of potassium superoxide medicine plates that be arranged in parallel, and the distance between the potassium superoxide medicine plate is 15～25 millimeters.
5. air regeneration unit according to claim 4, it is characterized in that: described potassium superoxide medicine plate group comprises 12～20 blocks of potassium superoxide medicine plates, and the distance between the potassium superoxide medicine plate is 18～22 millimeters.
6. air regeneration unit according to claim 5, it is characterized in that: described potassium superoxide medicine plate group is made up of 18 blocks of potassium superoxide medicine plates, and the distance between the potassium superoxide medicine plate is 20 millimeters.
7. according to the arbitrary described air regeneration unit of claim 1～6, it is characterized in that: the wide * height of the long * of described air regenesis unit is of a size of 300～400 millimeters of 200～300 millimeters * of 300～400 millimeters *.
8. air regeneration unit according to claim 7, it is characterized in that: the wide * height of the long * of described air regenesis unit is of a size of 350 millimeters of 260 millimeters * of 350 millimeters *.
9. according to the arbitrary described air regeneration unit of claim 1～8, it is characterized in that: described air regenesis unit is provided with three, and three air regenesis unit are vertically stacked; Described air regenesis is provided with dividing plate between the unit, and this dividing plate is provided with air duct.
10. air regeneration unit according to claim 9, it is characterized in that: described block board thickness is 35～45 millimeters; Preferably, described block board thickness is 40 millimeters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104522844A CN103184885A (en) | 2011-12-29 | 2011-12-29 | Safe air regeneration device for coal mine underground emergency shelter |
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|---|---|---|---|
| CN2011104522844A CN103184885A (en) | 2011-12-29 | 2011-12-29 | Safe air regeneration device for coal mine underground emergency shelter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832979A (en) * | 2013-12-30 | 2014-06-04 | 上海垚远科技发展有限公司 | Self-aid chemical oxygen supply purification device of mining emergency refuge system |
| CN113970936A (en) * | 2020-07-23 | 2022-01-25 | 中国人民解放军69007部队 | Novel intelligent oxygen generation technology for closed space under nuclear biochemical condition, and equipment and manufacturing method applied to novel intelligent oxygen generation technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832979A (en) * | 2013-12-30 | 2014-06-04 | 上海垚远科技发展有限公司 | Self-aid chemical oxygen supply purification device of mining emergency refuge system |
| CN103832979B (en) * | 2013-12-30 | 2016-04-20 | 上海垚远科技发展有限公司 | A kind of mining emergency hedge system self-contained type chemistry oxygen supply refining plant |
| CN113970936A (en) * | 2020-07-23 | 2022-01-25 | 中国人民解放军69007部队 | Novel intelligent oxygen generation technology for closed space under nuclear biochemical condition, and equipment and manufacturing method applied to novel intelligent oxygen generation technology |
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Application publication date: 20130703 |