CN103306706B - Device and process for preparing aerosol for preventing coal from spontaneous combustion - Google Patents
Device and process for preparing aerosol for preventing coal from spontaneous combustion Download PDFInfo
- Publication number
- CN103306706B CN103306706B CN201310234094.4A CN201310234094A CN103306706B CN 103306706 B CN103306706 B CN 103306706B CN 201310234094 A CN201310234094 A CN 201310234094A CN 103306706 B CN103306706 B CN 103306706B
- Authority
- CN
- China
- Prior art keywords
- aerosol
- jet
- pneumatic
- pressure
- retardant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to a device and a process for preparing aerosol for preventing coal from spontaneous combustion, and solves the problem of spontaneous combustion of coal in a coal mine goaf, in particular to residual coal in a high space. The device comprises a jet current proportion device, an aerosol atomization device and a pneumatic conveying device, wherein the jet current proportion device comprises a jet current proportioner, a pressure water inlet connected with a spray nozzle of the jet current proportioner, as well as an inhibitor inlet connected with a liquid absorption chamber of the jet current proportioner, and a delivery outlet of the jet current proportioner is connected with a liquid inlet of the aerosol atomization device; the aerosol atomization device comprises an atomization chamber, and an aerosol delivery outlet of the atomization chamber is connected with a suction inlet of the pneumatic conveying device; and the pneumatic conveying device comprises a pneumatic conveyor, a pneumatic conveying device suction inlet communicated with the pneumatic conveyor as well as a pressure gas inlet and a pneumatic conveying device delivery outlet which are communicated with the pneumatic conveyor. According to the device and the process, an inhibitor is diluted by water and then atomized, and finally, atomized inhibiting aerosol is conveyed to the goaf with pressure gas.
Description
Technical field
The present invention relates to coal spontaneous combustion fireproofing technique field, goaf.
Background technology
The whole nation has the mine of 56% to there is the danger of spontaneous fire in colliery, direct and nearly 10,000,000,000 yuan of the indirect economic loss caused every year.Existing preventing and extinguishing fire technology is all realize fire extinguishing by reducing or reduce mixture of coal with oxygen, and the resistance inerting difficulty for comparatively unobstructed goaf of leaking out is larger.Especially combine to adopt and strengthen with the employing pit mining intensity of Longwall top coal caving technology, ventilating system relative complex, goaf scope constantly expands, and goaf is the most also the region that freely burning fire the most often occurs, and significantly increases the frequency of mine coal spontaneous combustion and the difficulty of control.Goaf drop has a large amount of float coal; There is oxygen supply of continuously leaking out; Possess good something lost coal accumulation of heat environment, and goaf area is large, spontaneous combustion " three bands " be dynamic mobile with the propelling of working face, loses that coal high temperature range is large, high temperature dot is hidden, once it is large-area often that spontaneous combustion occurs, difficulty of putting out a fire is very large.
The Main Means of current control coal spontaneous combustion is cooling (as water filling, slip casting, glue injection body, note three-phase froth etc.) and goaf inerting (as nitrogen injection, carbon dioxide injection etc.), although the fire extinguishing of these means in the low bit space in Close Quarters Goaf, colliery has played positive role, the high bit space for remote goaf has caught fire and can't prove effective completely.Because coal spontaneous combustion mostly occurs in goaf, the area in goaf is larger, burning things which may cause a fire disaster point is more hidden and be difficult to determine its particular location, conventional fireproofing extinguishing materials is difficult to carry out large area filling, and do not possess good accumulation, undesirable to region coal spontaneous combustion fire effects such as preventing and controlling face goafs.So goaf can be made to fall oxygen, inerting in the urgent need to research, take remote hidden region resistanceization spontaneous combustion of remaining coal to hindering formed material, and arrive the fire proofing material of goaf height bit space, equipment and technique for applying.
Summary of the invention
The invention provides a kind of aerosol fabrication equipment and technique of preventing and treating coal spontaneous combustion, it can prevent and treat the spontaneous combustion that coal is lost in the regions such as coal mine gob, resistance formed material is taken to remote hidden region, particularly takes goaf height bit space resistanceization spontaneous combustion of remaining coal to.
The thinking that the present invention solves the problem is: diluted by retardant, and is atomized into aerosol feeding coal spontaneous combustion deathtrap, goaf.
For solving above technical problem, the present invention provides following technical scheme:
The aerosol fabrication equipment of control coal spontaneous combustion provided by the present invention, its special character is: comprise the jet-flow proportioning device, aerosol atomization plant and the pneumatic conveyor that are connected successively,
Wherein, jet-flow proportioning device comprises jet-flow proportioning device, the press water import be connected with jet-flow proportioning device nozzle, the retardant import that is connected with jet-flow proportioning device imbibition room, and jet-flow proportioning device delivery outlet is connected with aerosol atomization plant inlet;
Aerosol atomization plant comprises and is placed in spray chamber in explosion-resistant enclosure and supply terminals, and be provided with pulverizer plate in spray chamber, the vaporific aerosol delivery outlet of spray chamber is connected with pneumatic conveyor suction inlet;
Pneumatic conveyor comprises pneumatic conveyer, the pneumatic conveyor suction inlet be communicated with pneumatic conveyer, the pressed gas import be communicated with pneumatic conveyer and pneumatic conveyor delivery outlet, described pressed gas is nitrogen or carbon dioxide, consider the safety to staff, preferred nitrogen.
Preferred version of the present invention is that above-mentioned jet-flow proportioning device comprises nozzle, is positioned at the imbibition room of nozzle periphery, the trunnion be connected with imbibition room and the anemostat be connected with trunnion, when the pressure of press water is 1 ~ 2Mpa, the volume flow ratio of retardant and press water is 1: 3 ~ 1: 4.
Above-mentioned pulverizer plate preferably adopts integrated form ultrasonic atomization plate.
In order to real-time monitored jet-flow proportioning installs pipes the pressure of upper liquid and flow, also in order to ensure atomization quality, prevent impurity from entering into aerosol atomization plant, the press water inlet pipeline and retardant inlet pipeline of jet-flow proportioning device are respectively equipped with Pressure gauge, flowmeter and filter screen.
The aerosol preparation technology of control coal spontaneous combustion provided by the invention, its special character is: comprise the following steps:
1) preparation of retardant mixed liquor: use jet-flow proportioning device, sucks retardant by the negative pressure that press water jet produces, carries out dilution mixture, obtain retardant mixed liquor;
2) being atomized: by step 1) the retardant mixed liquor that obtains is transported to aerosol atomization plant by jet-flow proportioning device and carries out atomization and process, and obtains vaporific resistanceization aerosol;
3) pneumatic output: use pneumatic conveyor, with pressure nitrogen gas or pressure carbon dioxide gas by step 2) the vaporific resistanceization aerosol that obtains sucks the pneumatic conveyer of pneumatic conveyor, vaporific resistanceization aerosol mixes with pressure nitrogen gas or pressure carbon dioxide gas, and by the power of pressure nitrogen gas or pressure carbon dioxide gas, vaporific resistanceization aerosol is outputted to goaf.
The preferred version of this method is: step 1) in the pressure of press water be 1 ~ 2Mpa, the volume flow ratio of retardant and press water is 1: 3 ~ 1: 4; Step 2) in atomization after resistance aerosol particles diameter be 1 ~ 10 μm.
Above-mentioned steps 3) in the pressure of nitrogen or carbon dioxide gas be preferably: 0.5 ~ 0.7MPa.
Retardant can be CaCl
2solution, MgCl
2solution, ZnCl
2solution or Ca (OH)
2one or more mixing in solution, but be not limited in that these are several.
Compared with prior art, the present invention has the following advantages:
The present invention using press water and pressure nitrogen gas or pressure carbon dioxide gas as transmitting power, so safe and reliable.Because the resistance aerosol of preparation is vaporific, power by pressed gas can carry out resistance to the something lost coal of overall large area goaf and high bit space rapidly, extend spontaneous combustion period, play the effect of parcel, resistanceization, inerting, the effective development suppressing and prevent coal spontaneous combustion.
The present invention can utilize down-hole nitrogen-filling system, by pneumatic conveyer by resistance aerosol delivery to the hidden region of goaf coal spontaneous combustion, the nitrogen entering flame range has the effect of falling oxygen inerting, the aerocolloidal particulate of resistanceization covers coal body surface, by heat absorption, suffocate and the synergy suppression coal of physical chemistry resistanceization and the combination of oxygen, and consume the free active group of coal oxidation reaction generation, extend the spontaneous combustion period of coal.Resistanceization aerosol particles has good suspending power and around barrier ability, be diffused into each position of deep, goaf spontaneous fine seam in a short period of time, can also permeate short space while realizing inerting, enter the hidden region of deep, goaf coal spontaneous combustion, achieve comprehensive fire prevention, improve fire protection efficiency.
Aerosol fabrication equipment volume provided by the invention is little, and structure is simple, easy to operate, security of operation, reliable and stable, the water supply using power that down-hole can be adopted normally to use, nitrogen-filling system, safety and reliability is used at highly gassy mine, and to environment and personnel without any negative effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is structure diagram of the present invention;
Fig. 3 is the structural representation of pneumatic conveyer of the present invention.
Reference numeral:
1-jet-flow proportioning device; The import of 2-press water; The import of 3-retardant; 4-aerosol atomization plant inlet; 5-spray chamber; 6-jet-flow proportioning device delivery outlet; Delivery outlet put by the vaporific aerosol of 7-; 8-pneumatic conveyor suction inlet; 9-pneumatic conveyer; The import of 10-pressed gas; 11-pneumatic conveyor delivery outlet; 12-nozzle; 13-imbibition room; 14-trunnion; 15-anemostat; 16-central lumen; 17-annular chamber; 18-nozzle ring; 19-tapping valve; 20-quick connector; 21-is mining stop valve; 22-filter screen; 23-flowmeter.
Detailed description of the invention
Below in conjunction with accompanying drawing, content of the present invention is described in detail.
As depicted in figs. 1 and 2, aerosol fabrication equipment of the present invention comprises jet-flow proportioning device, aerosol atomization plant and pneumatic conveyor.Jet-flow proportioning device comprises jet-flow proportioning device 1, the press water import 2 be connected with jet-flow proportioning device nozzle 12, the retardant import 3 that is connected with jet-flow proportioning device imbibition room 13, and jet-flow proportioning device delivery outlet 6 is connected with aerosol atomization plant inlet 4; Aerosol atomization plant comprises and is placed in spray chamber 5 in explosion-resistant enclosure and supply terminals, and be provided with integrated form ultrasonic atomization plate in spray chamber, the vaporific aerosol delivery outlet 7 of spray chamber is connected with pneumatic conveyor suction inlet 8; Pneumatic conveyor comprises pneumatic conveyer 9, the pneumatic conveyor suction inlet be communicated with pneumatic conveyer, the pressed gas import 10 be communicated with pneumatic conveyer and pneumatic conveyor delivery outlet 11, pressed gas can select nitrogen or carbon dioxide, consider the safety to staff, preferred nitrogen.
As shown in Figure 2, jet-flow proportioning device comprises nozzle 12, is positioned at the imbibition room 13 of nozzle periphery, the trunnion 14 be connected with imbibition room and the anemostat 15 be connected with trunnion, and length of throat is 2 times of throat inner radius; When the pressure of press water is 1 ~ 2Mpa, the volume flow ratio of retardant and press water is 1: 3 ~ 1: 4.
Due to the present invention operationally, aerosol atomization plant can produce liquid in atomization process, affect atomization work, therefore, aerosol atomization plant is also provided with tapping valve 19, float liquid level switch, explosion-proof solenoid valve, when aerosol atomization plant liquid level transfinites, float liquid level switch output switch amount, close explosion-proof solenoid valve, realize automatic blocking.
As shown in Figure 3, pneumatic conveyer has a central lumen 16 and is positioned at the annular chamber 17 of central lumen periphery, be provided with nozzle ring 18 between annular chamber and the entrance point of central lumen, pressed gas import is connected with annular chamber, and pneumatic conveyor suction inlet is connected with the entrance point of central lumen.
In order to pressure and the flow of liquid on real-time monitored pipeline, prevent impurity from entering, on press water inlet pipeline He on retardant inlet pipeline, be provided with mining stop valve, filter screen, flowmeter, pipeline enclosure adopts mining quick connector; The pipeline of aerosol atomization plant inlet is provided with mining stop valve, filter screen; Pressed gas inlet pipeline is provided with flowmeter, mining stop valve; The flow of press water and retardant and ratio can utilize mining stop valve to carry out regulating and control.The termination of each pipeline of the present invention have employed mining quick connector, and staff according to the concrete condition of the colliery degree of depth, can increase, dismantles or install device of the present invention flexibly.
Embodiment illustrates, and pressed gas is for nitrogen:
At certain mine, entered the nozzle of jet-flow proportioning device by press water import with 1.5Mpa press water, at nozzle exit due to the stiction between press water jet and air, air near nozzle is taken away, (flow velocity of main flow increases to make to form negative pressure near nozzle, potential energy reduces, kinetic energy increases), under environment atmospheric pressure effect, pumped retardant liquid and be sucked up (volume flow ratio of retardant liquid and press water is 1: 4) through imbibition room, and together enter in trunnion in company with press water, two bursts of liquid generation momentum-exchanges in trunnion, part energy passes to by the retardant liquid pumped by press water, press water flows decrease, accelerated by the retardant liquid velocity pumped, the speed arriving two strands of liquid during trunnion end is gradually consistent, mixed process completes substantially, form retardant mixed liquor and enter anemostat, reduce gradually (kinetic energy reduces gradually) at diffusion velocity in pipes, potential energy (pressure) increases gradually, to the pressure of anemostat exit retardant mixed liquor higher than the pressure being flowed into trunnion by the retardant liquid pumped, the pressure of trunnion is flowed into lower than press water, last retardant mixed liquor is discharged from the anemostat of DN20mm, flow into aerosol atomization plant.
In aerosol atomization plant, aerosolizable 200kg retardant mixed liquor per hour, be arranged on the integrated form ultrasonic atomization plate in spray chamber, utilize the intrinsic supersonic oscillations feature of ultrasonic atomization oscillator piezoelectric ceramics, circuit supersonic oscillations, be transferred to piezoelectric ceramic vibrator sub-surface, piezoelectric ceramic vibrator produces axial mechanical resonance change and is transferred to the resistance mixing material be in contact with it, liquid surface is made to produce protuberance, and protuberance around generation cavitation, the shock wave produced by cavitation is by continuous repeatedly with the vibration frequency of oscillator, liquid surface is made to produce the capillary wave of finite amplitude, the wave head of this tensile wave disperses, make the liquid atomization into the vaporific resistanceization aerosol that resistance aerosol particles diameter is 1 ~ 10 μm.
As shown in Figures 2 and 3, the vaporific aerosol delivery outlet of spray chamber connects the suction inlet of pneumatic conveyor by the mining quick connector of Φ 32mm, nitrogen-filling system enters annular chamber with the pressure of 0.69MPa by pressed gas import, sprayed with high flow velocity by a little ring nozzle, in the pneumatic conveyer of aerosol atomization plant, the air-flow of ejection at a high speed will form Coanda effect region of no pressure (as shown in Figure 3, arrow in Fig. 3 illustrates pressed gas and the aerocolloidal trend of vaporific resistanceization), the vaporific resistanceization aerosol in aerosol atomization plant is driven to be entered the central lumen of pneumatic conveyer by suction inlet, mix with pressure nitrogen gas, and by the power of pressure nitrogen gas, vaporific resistanceization aerosol is delivered to goaf (conveying magnification ratio 5 ~ 30 times) from the delivery outlet of aerosol atomization plant, utilize flow behavior and transport characteristics that resistanceization aerosol is good, vaporific resistanceization aerosol is taken to remote hidden spontaneous fine seam, and goaf height bit space can be arrived, especially coal is pushed up and rib spontaneous combustion effect is ideal to prevention goaf " twice two line ", one deck resistanceization film is formed on coal body surface, the composition of resistanceization film has very strong water imbibition, coal can be made to be in dampness for a long time, reduce the functional group of oxidation of coal reaction or stop radical reaction, oxidation rate is suppressed, extend coal spontaneous combustion stage, nitrogen is as the power of Compressed Gas, while inerting spontaneous combustion region, also the effect suppressing gas and water-gas to fire is played.
Claims (9)
1. prevent and treat the aerosol fabrication equipment of coal spontaneous combustion, it is characterized in that: comprise the jet-flow proportioning device, aerosol atomization plant and the pneumatic conveyor that are connected successively,
Wherein, jet-flow proportioning device comprises jet-flow proportioning device, the press water import be connected with jet-flow proportioning device nozzle, the retardant import that is connected with jet-flow proportioning device imbibition room, and jet-flow proportioning device delivery outlet is connected with aerosol atomization plant inlet;
Aerosol atomization plant comprises and is placed in spray chamber in explosion-resistant enclosure and supply terminals, and be provided with pulverizer plate in spray chamber, the vaporific aerosol delivery outlet of spray chamber is connected with pneumatic conveyor suction inlet;
Pneumatic conveyor comprises pneumatic conveyer, the pneumatic conveyor suction inlet be communicated with pneumatic conveyer, the pressed gas import be communicated with pneumatic conveyer and pneumatic conveyor delivery outlet, and described pressed gas is nitrogen or carbon dioxide.
2. the aerosol fabrication equipment of control coal spontaneous combustion according to claim 1, it is characterized in that: described jet-flow proportioning device comprises nozzle, is positioned at the imbibition room of nozzle periphery, the trunnion be connected with imbibition room and the anemostat be connected with trunnion, when the pressure of press water is 1 ~ 2Mpa, the volume flow ratio of retardant and press water is 1: 3 ~ 1: 4.
3. the aerosol fabrication equipment of control coal spontaneous combustion according to claim 1 and 2, is characterized in that: described pulverizer plate is integrated form ultrasonic atomization plate.
4. the aerosol fabrication equipment of control coal spontaneous combustion according to claim 1 and 2, is characterized in that: on the press water inlet pipeline and retardant inlet pipeline of jet-flow proportioning device, be respectively equipped with Pressure gauge, flowmeter and filter screen.
5. the aerosol fabrication equipment of control coal spontaneous combustion according to claim 1 and 2, it is characterized in that: described pneumatic conveyer has a central lumen and is positioned at the annular chamber of central lumen periphery, nozzle ring is provided with between annular chamber and the entrance point of central lumen, pressed gas import is connected with annular chamber, and pneumatic conveyor suction inlet is connected with the entrance point of central lumen.
6. prevent and treat an aerosol preparation technology for coal spontaneous combustion, it is characterized in that: comprise the following steps:
1) preparation of retardant mixed liquor: use jet-flow proportioning device, sucks retardant by the negative pressure that press water jet produces, carries out dilution mixture, obtain retardant mixed liquor;
2) being atomized: by step 1) the retardant mixed liquor that obtains is transported to aerosol atomization plant by jet-flow proportioning device and carries out atomization and process, and obtains vaporific resistanceization aerosol;
3) pneumatic output: use pneumatic conveyor, with pressure nitrogen gas or pressure carbon dioxide gas by step 2) the vaporific resistanceization aerosol that obtains sucks the pneumatic conveyer of pneumatic conveyor, vaporific resistanceization aerosol mixes with pressure nitrogen gas or pressure carbon dioxide gas, and by the power of pressure nitrogen gas or pressure carbon dioxide gas, vaporific resistanceization aerosol is outputted to goaf.
7. technique according to claim 6, is characterized in that: step 1) in the pressure of press water be 1 ~ 2Mpa, the volume flow ratio of retardant and press water is 1: 3 ~ 1: 4; Step 2) in atomization after resistance aerosol particles diameter be 1 ~ 10 μm.
8. the technique according to claim 6 or 7, is characterized in that: step 3) in the pressure of nitrogen or carbon dioxide gas be: 0.5 ~ 0.7MPa.
9. the technique according to claim 6 or 7, is characterized in that: retardant is CaCl
2solution, MgCl
2solution, ZnCl
2solution or Ca (OH)
2solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234094.4A CN103306706B (en) | 2013-06-13 | 2013-06-13 | Device and process for preparing aerosol for preventing coal from spontaneous combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234094.4A CN103306706B (en) | 2013-06-13 | 2013-06-13 | Device and process for preparing aerosol for preventing coal from spontaneous combustion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103306706A CN103306706A (en) | 2013-09-18 |
| CN103306706B true CN103306706B (en) | 2015-04-29 |
Family
ID=49132381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310234094.4A Expired - Fee Related CN103306706B (en) | 2013-06-13 | 2013-06-13 | Device and process for preparing aerosol for preventing coal from spontaneous combustion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103306706B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2802495C1 (en) * | 2023-01-16 | 2023-08-29 | Федеральное государственное казенное учреждение "12 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации | Method for lowering the temperature and sorption of combustion and explosion products in mine workings and tunnels and a device for its implementation |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240042B (en) * | 2015-09-23 | 2017-11-03 | 太原理工大学 | A kind of method that utilization phase transformation colloidal sol prevents coal mine gob freely burning fire |
| CN106629068A (en) * | 2016-11-21 | 2017-05-10 | 中国核电工程有限公司 | Aerosol distribution device |
| CN106680174A (en) * | 2016-11-21 | 2017-05-17 | 中国核电工程有限公司 | Aerosol distributing and sampling system |
| CN107083987A (en) * | 2017-03-24 | 2017-08-22 | 中国矿业大学(北京) | Prevent and treat the nitrogen resistanceization steam fog preparation method and system of underground goaf spontaneous combustionof coal |
| CN107642373A (en) * | 2017-11-08 | 2018-01-30 | 太原理工大学 | A kind of ultrasonic atomization anion subparticle method for suppressing goaf coal spontaneous combustion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237463A (en) * | 1999-02-09 | 1999-12-08 | 吴建勋 | Ultrasonic aerosol fire-extinguishing equipment |
| CN2486172Y (en) * | 2001-07-26 | 2002-04-17 | 西安西格玛消防科技有限责任公司 | Cold preparing aerosol fire extinguisher |
| UA11709U (en) * | 2005-05-18 | 2006-01-16 | M S Poliakov Inst Of Geotechni | Method for intensifying degassing and extraction of methane from loaded coal beds |
| RU2348813C2 (en) * | 2007-02-12 | 2009-03-10 | Федеральное государственное унитарное предприятие Научный центр по безопасности работ в угольной промышленности ВостНИИ (НЦ ВостНИИ) | Method of preventing spontaneous fires in active working areas |
| CN101951993A (en) * | 2007-11-09 | 2011-01-19 | 推进动力公司 | Fire protection device, system and utilize mist to handle the method for fire |
| CN203383846U (en) * | 2013-06-13 | 2014-01-08 | 西安科技大学 | Device for preparing aerosol for prevention and control of coal spontaneous combustion |
-
2013
- 2013-06-13 CN CN201310234094.4A patent/CN103306706B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237463A (en) * | 1999-02-09 | 1999-12-08 | 吴建勋 | Ultrasonic aerosol fire-extinguishing equipment |
| CN2486172Y (en) * | 2001-07-26 | 2002-04-17 | 西安西格玛消防科技有限责任公司 | Cold preparing aerosol fire extinguisher |
| UA11709U (en) * | 2005-05-18 | 2006-01-16 | M S Poliakov Inst Of Geotechni | Method for intensifying degassing and extraction of methane from loaded coal beds |
| RU2348813C2 (en) * | 2007-02-12 | 2009-03-10 | Федеральное государственное унитарное предприятие Научный центр по безопасности работ в угольной промышленности ВостНИИ (НЦ ВостНИИ) | Method of preventing spontaneous fires in active working areas |
| CN101951993A (en) * | 2007-11-09 | 2011-01-19 | 推进动力公司 | Fire protection device, system and utilize mist to handle the method for fire |
| CN203383846U (en) * | 2013-06-13 | 2014-01-08 | 西安科技大学 | Device for preparing aerosol for prevention and control of coal spontaneous combustion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2802495C1 (en) * | 2023-01-16 | 2023-08-29 | Федеральное государственное казенное учреждение "12 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации | Method for lowering the temperature and sorption of combustion and explosion products in mine workings and tunnels and a device for its implementation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103306706A (en) | 2013-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103306706B (en) | Device and process for preparing aerosol for preventing coal from spontaneous combustion | |
| US9004375B2 (en) | Method and apparatus for generating a mist | |
| CN103007472B (en) | Compressed air foam extinguishing agent ejecting gun and method thereof | |
| CN101573159A (en) | Dual extinguishment fire suppression system using high velocity low pressure emitters | |
| CN203383846U (en) | Device for preparing aerosol for prevention and control of coal spontaneous combustion | |
| CN103127641B (en) | Double-aerosol-extinguishant spraying device | |
| CN109736802B (en) | Foam-water mist-air curtain three-stage linkage dust fall system and dust fall method | |
| CN203154684U (en) | Compressed gas foam extinguishing system for fire fighting truck | |
| CN204082202U (en) | foam dust-removing device | |
| CN101612458A (en) | Energy storage positive pressure froth fire extinguishing system | |
| CN103691082B (en) | The lazy bubble preparation facilities of colloid resistanceization of control coal spontaneous combustion and technique thereof | |
| CN105327475A (en) | Energy storage type compressed gas foam fire extinguishing device | |
| CN102501182A (en) | Dual-purpose spray gun for cutting and fire extinguishing | |
| CN103028333B (en) | Foaming device for compressed air A-type foams | |
| CN105536173A (en) | Method for restraining oil gas explosion in restricted space through gas-liquid two-phase explosion restraining agent | |
| RU190538U1 (en) | Device for preventing and extinguishing forest, industrial and emergency transport fires and laying of barrier strips with air-mechanical foam | |
| CN110354422B (en) | Negative pressure mobile three-phase foam generating device and method | |
| CN102327687A (en) | Dry powder extinguishing system and method based on wind-speed adjustment | |
| CN203694462U (en) | Colloid inhibition inerting foam preparation device for preventing spontaneous combustion of coal | |
| CN201441767U (en) | Energy storing positive pressure foam fire extinguishing system | |
| CN104548433A (en) | High-pressure dried carbon dioxide powder fire extinguisher | |
| CN108187273A (en) | A kind of cavitation mixer for micro stable addition | |
| CN204395276U (en) | A kind of high-pressure carbon dioxide dry powder extinguisher | |
| CN114733106A (en) | Automatic foam injection system and method for preventing and controlling cutting sparks of coal mining machine | |
| JP5681748B2 (en) | Fire extinguisher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Li Inventor after: Wang Weifeng Inventor after: Wen Hu Inventor after: Jin Yongfei Inventor after: Zhang Xinhai Inventor before: Wen Hu Inventor before: Wang Weifeng Inventor before: Ma Li Inventor before: Jin Yongfei Inventor before: Zhang Xinhai |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WEN HU WANG WEIFENG MA LI JIN YONGFEI ZHANG XINHAI TO: MA LI WANG WEIFENG WEN HU JIN YONGFEI ZHANG XINHAI |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20200613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |