CN104771852B - A kind of coal dust pot inert gas protection device and its application method - Google Patents
A kind of coal dust pot inert gas protection device and its application method Download PDFInfo
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- CN104771852B CN104771852B CN201510156171.8A CN201510156171A CN104771852B CN 104771852 B CN104771852 B CN 104771852B CN 201510156171 A CN201510156171 A CN 201510156171A CN 104771852 B CN104771852 B CN 104771852B
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- coal dust
- powder tank
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- inert gas
- output pipe
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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
- A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
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Abstract
The present invention relates to a kind of coal dust pot inert gas protection device and its application methods, it includes CO2Output pipe and N2Output pipe；CO2The first master control valve, the first decompression table, the first vaporizer, the first inerting controller and first throttle valve, CO are sequentially connected in series on output pipe2One end of output pipe connects CO2Storage device, the other end connect more than one CO2Bye-pass, every CO2Bye-pass connects the top of a powder tank；N2The second master control valve, the second decompression table, the second vaporizer, the second inerting controller and second throttle, N are sequentially connected in series on output pipe2One end of output pipe connects N2Storage device, the other end connect more than one N2Bye-pass, every N2Bye-pass connects the lower part of a powder tank；Monitoring device is both provided on each powder tank, each monitoring device is separately connected control system, and control system is separately connected the first master control valve and the second master control valve.The present invention can effectively prevent spontaneous combustion of pulverized coal and inert gas is made lenitively to be passed through in coal dust pot, to ensure that pulverized coal particle lenitively reaches stable state.
Description
Technical field
The present invention relates to a kind of coal dust pot protective device and its application methods, especially with regard to a kind of coal dust pot inert gas
Protective device and its application method.
Background technology
Using CO in coal dust pot protection at present2High low pressure fire extinguishing system, due to CO2High low pressure fire extinguishing system and coal
The inerting protection conception of powder tank is different, CO2High low pressure fire extinguishing system is the remedial measure after a kind of spontaneous combustion of pulverized coal, and principle is
It was found that carry out the covering of instantaneous big flow after fire behavior to protection zone, achieve the purpose that fire extinguishing, but due to pulverized coal particle be pole not
Stable, the environment change of any fierceness under critical conditions may all set off an explosion, so using existing CO2High low pressure
Fire extinguishing system carries out the covering of quick big flow, it is likely that can generate strong disturbance to the environment in coal dust pot, cause more serious
Explosion.It can be seen that CO2Not only there is certain hysteresis quality in the protection of high low pressure fire extinguishing system application coal dust pot, but also
It is possible that causing serious explosion, so not being suitable for the protection to coal dust pot.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide one kind can either effectively preventing spontaneous combustion of pulverized coal, and enable to
Inert gas is lenitively passed through in coal dust pot, to ensure that pulverized coal particle lenitively reaches the coal dust pot inert gas of stable state
Protective device and its application method.
To realize the above-mentioned technical purpose, the present invention takes following technical scheme：A kind of coal dust pot inert gas protection device,
It includes a CO2Storage device, a N2Storage device, a CO2Output pipe, a N2Output pipe, more than one powder tank, one
A above monitoring device and a control system；The CO2The first master control valve, the first decompression are sequentially connected in series on output pipe
Table, the first vaporizer, the first inerting controller and first throttle valve, the CO2One end of output pipe connects the CO2Storage
Device, the other end connect more than one CO2Bye-pass, each CO2Bye-pass connects the top of a powder tank；It is described
N2The second master control valve, the second decompression table, the second vaporizer, the second inerting controller and second are sequentially connected in series on output pipe
Throttle valve, the N2One end of output pipe connects the N2Storage device, the other end connect more than one N2Bye-pass, often
One N2Bye-pass connects the lower part of a powder tank；It is both provided with the monitoring device, Mei Yisuo on each powder tank
It states monitoring device and is separately connected the control system, the control system is separately connected the first master control valve and the second master control
Valve.
Each powder tank upper portion side wall is respectively provided with a coil pipe, each coil pipe and the corresponding CO2Bye-pass is connected to,
More than one nozzle is arranged to the corresponding powder tank internal stretch in each coil pipe, and it is dust-proof that each nozzle is respectively provided with one
Cover.
The nozzle is processed into using metal hose.
The N2The Fluidizer pipeline connection of bye-pass and powder tank lower part.
Each monitoring device includes the thermocouple of more than one CO detection devices and three or more, the CO inspections
It surveys device and is fixed at the powder tank top, powder tank upper, middle and lower is respectively provided at least a thermocouple.
An acoustic-optic alarm is respectively provided on each powder tank, each acoustic-optic alarm is connected to the control
System processed.
The control system is also connect with the upper powder electrical ball valve of the powder tank.
The CO2Storage device and N2Storage device is all made of high-pressure cylinder.
A kind of application method of the coal dust pot inert gas protection device comprising following steps：(1) coal dust is ground,
Coal dust is conveyed into powder tank；When grinding coal dust, addition accounts for the lime stone of coal dust gross mass 2%~5%；(2) it works in powder tank
During the entire process of, CO detection devices and thermocouple in powder tank CO concentration and temperature monitored in real time, and monitoring number
Control system is transferred to when factually, when spontaneous combustion occurs for coal dust either when temperature or CO concentration monitor data reach setting value,
Control system driving acoustic-optic alarm is alarmed, while being lenitively passed through N under the action of control system2And CO2, specifically
Control process is followed successively by：1) control system starts the second master control valve and adjusts the second decompression table to suitable N automatically2The pressure of work
Power, the second inerting controller and second throttle cooperation control N2Flow so that N2Lenitively it is passed through inside powder tank by Fluidizer
Replace the O in coal dust gap2；2) control system starts the first master control valve and adjusts the first decompression table to suitable CO automatically2Work
Pressure, the first inerting controller and first throttle valve cooperation control CO2Flow so that CO2It is lenitively passed through coil pipe, passes through nozzle
By CO2It is lenitively passed through inside powder tank, the free space on coal dust top establishes certain thickness CO after a period of time2Protective layer, it is whole
First vaporizer and the equal continue working of the second vaporizer during a, prevent pipeline from freezing；(3) after the completion of upper powder, control system
System receives the signal of powder electrical ball valve, and control system can also execute above-mentioned 1 automatically) and 2) two step.
The invention adopts the above technical scheme, which has the following advantages：1, the present invention due to powder tank top and under
Portion is separately connected CO2Output pipe and N2Output pipe, and in CO2Output pipe and N2Throttling set is respectively provided on output pipe,
It not only can effectively prevent spontaneous combustion of pulverized coal, and can also inert gas be lenitively passed through inside coal dust pot, to ensure coal dust
Particle lenitively reaches stable state, effectively avoids the generation of explosion.It is 2, of the invention since coil pipe is arranged in powder tank upper portion side wall,
And by coil pipe and CO2Output pipe is connected to, and is not only able to so that CO2Gas can be evenly into powder tank inside, and can be effective
Prevent coal dust from blocking CO2Output pipe；The present invention is due in CO2Dust cover is set on output nozzle, is more effectively prevented from coal dust
Block CO2Output pipe；The present invention is due to by CO2Output nozzle is processed into using metal hose so that very square when installation
Just.3, the present invention is due to by N2Output pipe is connected with the Fluidizer pipeline positioned at powder tank lower part, not only so that N2With cooperation
Fluidising compressed air forces coal dust to accelerate the function of fluidizing, and N2The oxygen in coal dust can also be replaced so that in coal dust pot
Coal dust is in an environment for being unfavorable for burning, improves the safety of coal dust in coal dust pot.4, the present invention is due to setting monitoring dress
Set, and by monitoring information real-time Transmission to control system so that in coal dust pot environment be in can monitoring state, and then it is more efficient
Improve the safety in coal dust pot in ground.5, acoustic-optic alarm is arranged due to being arranged in the present invention on coal dust pot so that Yong Huke
To discover danger signal rapidly, coal dust pot and the safety of user is effectively ensured.6, the present invention due to being made respectively using high-pressure cylinder
For CO2Storage device and N2Storage device effectively reduces cost, increases economic efficiency.7, the present invention is due in coal powder grinding
A certain amount of lime stone is added, not only plays certain desulfidation, effective protection atmospheric environment, and it is quick-fried effectively to reduce coal dust
The pressure generated when fried.Not only design structure is simple, at low cost by the present invention, and to the protectiveness of coal dust pot height, can be extensive
Applied in the protection to coal dust pot.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the CO of the present invention2The structural schematic diagram for dividing output pipe to be connect with coil pipe；
Fig. 3 is the N of the present invention2Divide the structural schematic diagram of output pipe and Fluidizer piping connection.
Specific implementation mode
Come to carry out detailed description to the present invention below in conjunction with attached drawing.It should be appreciated, however, that attached drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.In the description of the present invention, it is to be understood that,
Term " first ", " second " etc. are only used for the purpose of description, are not understood to indicate or imply relative importance.
As shown in Figure 1, the coal dust pot inert gas protection device of the present invention includes a CO2Storage device 1, a N2Storage dress
Set 2, one CO2Output pipe 3, a N2Output pipe 4, more than one powder tank 5, the control of more than one monitoring device 6 and one system
System；CO2The first master control valve 31, the first decompression table 32, the first vaporizer 33, the first inerting are sequentially connected in series on output pipe 3
Controller 34 and first throttle valve 35, CO2One end of output pipe 3 connects CO2Storage device 1, other end connection are more than one
CO2Bye-pass 36, every CO2Bye-pass 36 connects the top of a powder tank 5；N2The second master control is sequentially connected in series on output pipe 4
Valve 41, the second decompression table 42, the second vaporizer 43, the second inerting controller 44 and second throttle 45, N2The one of output pipe 4
End connection N2Storage device 2, the other end connect more than one N2Bye-pass 46, every N2Bye-pass 46 connects under a powder tank 5
Portion；Monitoring device 6 is both provided on each powder tank 5, each monitoring device 6 is separately connected control system (not shown), control
System processed is separately connected the first master control valve 31 and the second master control valve 41.
In above-described embodiment, as shown in Fig. 2, each 5 upper portion side wall of powder tank is respectively provided with a coil pipe 51, each coil pipe 51 and phase
Answer CO2Bye-pass 36 is connected to, and more than one nozzle 52, each nozzle is arranged to corresponding 5 internal stretch of powder tank in each coil pipe 51
52 are respectively provided with a dust cover 53, wherein nozzle 52 may be used metal hose and be processed into.
In above-described embodiment, as shown in figure 3, N254 pipeline connection of Fluidizer of bye-pass 46 and 5 lower part of powder tank.
In above-described embodiment, each monitoring device 6 may each comprise more than one CO detection devices 61 and three or more
Thermocouple 62, CO detection devices 61 are fixed at the top of powder tank 5, and 5 upper, middle and lower of powder tank is respectively provided at least one
Thermocouple 62.
In above-described embodiment, in order to enable user can discover rapidly danger signal, coal dust pot and user is effectively ensured
It is safe, an acoustic-optic alarm can be set on each powder tank 5, each acoustic-optic alarm is connected to control system.
In above-described embodiment, in order to which N can be actuated for automatically after the completion of upper powder2And CO2Inerting protection, control system
System can also be connect with the upper powder electrical ball valve 55 of powder tank 5.
In above-described embodiment, CO2Storage device 1 and N2High-pressure cylinder 7 may be used in storage device 2；CO2Storage device 1
And N2Storage device 2 can also correspond to respectively uses CO2Gas station and nitrogen making machine, work as CO2Storage device 1 uses CO2When gas station, CO2
The first decompression table 32 and the first vaporizer 33 are not provided on output pipe 3；Work as N2When storage device 2 is using nitrogen making machine, N2Efferent duct
The second decompression table 42 and the second vaporizer 43 are not provided on road 4.
The application method of the coal dust pot inert gas protection device of the present invention includes the following steps：
(1) coal dust is ground, coal dust is conveyed into powder tank 5；When grinding coal dust, can add account for coal dust gross mass 2%~
5% lime stone；
(2) during the entire process of powder tank 5 works, CO detection devices 61 and thermocouple 62 in powder tank 5 CO concentration and
Temperature is monitored in real time, and monitoring data real-time Transmission to control system, when coal dust occur spontaneous combustion either work as temperature or
When CO concentration monitor data reach setting value, control system driving acoustic-optic alarm is alarmed, while in control system
N is lenitively passed through under effect2And CO2, specific control process is followed successively by：1) control system starts the second master control valve 41 and adjusts automatically
The second decompression table 42 is saved to suitable N2The pressure of work, the second inerting controller 44 and the cooperation control of second throttle 45 N2Flow,
Make N2The O being lenitively passed through by Fluidizer 54 in 5 inside displacement coal dust gap of powder tank2；2) control system starts first automatically
Master control valve 31 simultaneously adjusts the first decompression table 32 to suitable CO2The pressure of work, the first inerting controller 34 and first throttle valve 35
Cooperation control CO2Flow so that CO2It is lenitively passed through coil pipe 51, by nozzle 52 by CO2It is lenitively passed through inside powder tank 5, one
As free space after 7~9 hours on coal dust top establish the CO of thickness about 500mm2Protective layer, the first vaporization in whole process
43 equal continue working of device 33 and the second vaporizer, prevents pipeline from freezing；
(3) after the completion of upper powder, control system receives the signal of powder electrical ball valve 55, and control system can also be held automatically
Row above-mentioned 1) and 2) two step.
Above-described embodiment is merely to illustrate the present invention, wherein the structure of each component, connection type and manufacture craft etc. are all
It can be varied from, every equivalents carried out based on the technical solution of the present invention and improvement should not exclude
Except protection scope of the present invention.
Claims (8)
1. a kind of coal dust pot inert gas protection device, it is characterised in that：It includes a CO2Storage device, a N2Storage device,
One CO2Output pipe, a N2Output pipe, more than one powder tank, more than one monitoring device and a control system；It is described
CO2The first master control valve, the first decompression table, the first vaporizer, the first inerting controller and are sequentially connected in series on output pipe
One throttle valve, the CO2One end of output pipe connects the CO2Storage device, the other end connect more than one CO2Branch pipe
Road, each CO2Bye-pass connects the top of a powder tank；The N2The second master control is sequentially connected in series on output pipe
Valve, the second decompression table, the second vaporizer, the second inerting controller and second throttle, the N2One end of output pipe connects
The N2Storage device, the other end connect more than one N2Bye-pass, each N2Bye-pass connects under a powder tank
Portion；The monitoring device is both provided on each powder tank, each monitoring device is separately connected the control system, institute
It states control system and is separately connected the first master control valve and the second master control valve；The N2The fluidisation of bye-pass and powder tank lower part
Device pipeline connection.
2. a kind of coal dust pot inert gas protection device as described in claim 1, it is characterised in that：Each powder tank upper side
Wall is respectively provided with a coil pipe, each coil pipe and the corresponding CO2Bye-pass is connected to, and each coil pipe is to the corresponding powder tank
More than one nozzle is arranged in internal stretch, and each nozzle is respectively provided with a dust cover.
3. a kind of coal dust pot inert gas protection device as claimed in claim 2, it is characterised in that：The nozzle is soft using metal
Pipe is processed into.
4. a kind of coal dust pot inert gas protection device as described in claims 1 or 2 or 3, it is characterised in that：Each monitoring
Device includes the thermocouple of more than one CO detection devices and three or more, and the CO detection devices are fixed at described
Powder tank top, powder tank upper, middle and lower are respectively provided at least a thermocouple.
5. a kind of coal dust pot inert gas protection device as claimed in claim 4, it is characterised in that：It is all provided on each powder tank
An acoustic-optic alarm is set, each acoustic-optic alarm is connected to the control system.
6. a kind of coal dust pot inert gas protection device as described in claims 1 or 2 or 3 or 5, it is characterised in that：The control
System is also connect with the upper powder electrical ball valve of the powder tank.
7. a kind of coal dust pot inert gas protection device as claimed in claim 6, it is characterised in that：The CO2Storage device and N2
Storage device is all made of high-pressure cylinder.
8. a kind of application method of the coal dust pot inert gas protection device as described in any one of claim 1~7 comprising following
Step：
(1) coal dust is ground, coal dust is conveyed into powder tank；When grinding coal dust, addition accounts for the lime of coal dust gross mass 2%~5%
Stone；
(2) during the entire process of powder tank works, CO detection devices and thermocouple are to the CO concentration and temperature progress reality in powder tank
When monitor, and monitoring data real-time Transmission to control system, either work as temperature or CO concentration monitors when spontaneous combustion occurs for coal dust
When data reach setting value, control system driving acoustic-optic alarm is alarmed, while being mitigated under the action of control system
Ground is passed through N2And CO2, specific control process is followed successively by：
1) control system starts the second master control valve and adjusts the second decompression table to suitable N automatically2The pressure of work, the second inerting control
Device processed and second throttle cooperation control N2Flow so that N2Displacement coal dust gap inside powder tank is lenitively passed through by Fluidizer
In O2；
2) control system starts the first master control valve and adjusts the first decompression table to suitable CO automatically2The pressure of work, the first inerting control
Device processed and first throttle valve cooperation control CO2Flow so that CO2It is lenitively passed through coil pipe, by nozzle by CO2Lenitively it is passed through
Inside powder tank, the free space on coal dust top establishes certain thickness CO after a period of time2Protective layer, the first vapour in whole process
Change device and the equal continue working of the second vaporizer, prevents pipeline from freezing；
(3) after the completion of upper powder, control system receives the signal of powder electrical ball valve, and control system can also execute above-mentioned automatically
1) and 2) two step.
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| CN201510156171.8A CN104771852B (en) | 2015-04-03 | 2015-04-03 | A kind of coal dust pot inert gas protection device and its application method |
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| CN201510156171.8A CN104771852B (en) | 2015-04-03 | 2015-04-03 | A kind of coal dust pot inert gas protection device and its application method |
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| CN104771852B true CN104771852B (en) | 2018-07-24 |
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| CN106964474B (en) * | 2017-05-16 | 2018-04-20 | 安徽工业大学 | A kind of coal pulverizer explosive-proof test system |
| CN108765891A (en) * | 2018-05-22 | 2018-11-06 | 威特龙消防安全集团股份公司 | A kind of fire-fighting method and system for pulverized coal preparation technique |
| CN108721805A (en) * | 2018-05-22 | 2018-11-02 | 威特龙消防安全集团股份公司 | A kind of pulverized coal bin carbon dioxide inerting method and inerting system |
| CN115307388A (en) * | 2022-08-16 | 2022-11-08 | 苏州倍丰智能科技有限公司 | Metal powder cold drying device |
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