CN1562417A - Inerting protection method and protection device in use for silo of storing raw coal - Google Patents
Inerting protection method and protection device in use for silo of storing raw coal Download PDFInfo
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- CN1562417A CN1562417A CN 200410012214 CN200410012214A CN1562417A CN 1562417 A CN1562417 A CN 1562417A CN 200410012214 CN200410012214 CN 200410012214 CN 200410012214 A CN200410012214 A CN 200410012214A CN 1562417 A CN1562417 A CN 1562417A
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Abstract
A method and mechanism for protecting the cylindrial coal bunker features that a telescopic aerator is arranged to its top for filling inertial gas, the aerating module is pre-embedded in its wall for filling inertial gas in coal, and the gas blocking module is arranged at its bottom for filling inertial to the position where coal is discharged.
Description
Technical field
The present invention relates to a kind of large-scale silo that is used to store raw coal, specifically relate to a kind of method of raw coal in the silo being implemented the inerting safeguard protection.The invention still further relates to a kind of device that is used for raw coal in the silo is implemented the inerting safeguard protection.
Background technology
Silo is a kind ofly to be used to store and can conveniently to draw off the large-scale plant of loose unpacked material, also is that the power plant is used for storing the key facility of raw coal in recent years.The raw coal silo is the flat-top awl end cylindrical structure that armored concrete is built, and volume reaches tens thousand of m
3, its internal structure is according to amount of capacity difference slightly.Silo top is provided with ring type coal-distributing machine cloth coal, and the bottom is provided with the ring type machine for unloading coal and produces coal, and is provided with deduster and prevents flour dust overflow in the silo, belongs to a kind of container of relative closure.
Use the raw coal silo to store raw coal and have and take up an area of little, no dust pollution, cleaning civilization, be applicable to advantage such as various weather conditions, be subjected to the welcome of electric industry department, and progressively applied.But anything all is relative, because the volume of raw coal silo has reached tens thousand of m
3, and the raw coal that stores belongs to the product that the spontaneous combustion tendency is high, magnitude of explosion belongs to the I class, so the use of raw coal silo has just brought the new problem of safety anti-explosive again.
The spontaneous combustion of raw coal is not to be all to take place simultaneously in silo, but possesses certain a bit at first generation of autoignition conditions in the part, and when and where is very uncertain, finally just causes to be large-area spontaneous combustion and detonation.Because the volume of silo is too big, when local spontaneous combustion takes place in raw coal, scope is little, heat is low, be subjected to environmental disturbances big, can not cause combustable gas concentration in the silo, amount of oxygen, comprehensively exceeding standard of monitor control indexs such as temperature, the combustable gas concentration that is provided with in the silo, amount of oxygen, sensor checkout facilities such as temperature can not be made monitoring accurately to the truth in the silo, can not in time monitor in the silo, glow in the coal seam, the real conditions of spontaneous combustion, by the time spontaneous combustion expanded range, the heat height, combustable gas concentration has increased when reacting again, affected the improvement time adversely, restive.
And for security incidents such as glowing of occurring in the silo, spontaneous combustion, blasts, existing measure also only limits in silo water spray and methods such as coal all draw off, these measures also are infeasible for the large-scale silo that several ten thousand tons of raw coal are housed.
The way of glowing at several ten thousand tons of raw coal, up watering during spontaneous combustion is undoubtedly in adding fuel to the flames, spray into the interior small amount of aqueous phase of silo for a large amount of raw coal, can only play the effect of oxidant, not only can not put out a fire, can quicken the blast (U.S. NFPA68/69 explosion-proof criteria) of raw coal on the contrary; Several ten thousand tons of raw coal all being drawn off from silo, both do not had so big place, also need long time, also is extremely unpractical way for fire-fighting fire extinguishing.
And after accident takes place, in silo, charge into as CO temporarily
2, N
2Implement the measure of inactive protect Deng inert gas, for less than 2000m
3Small-sized silo can also be suitable for, for several ten thousand m
3Large-scale raw coal silo then can't realize at all.Therefore, spell out in the U.S. NFPA68/69 explosion-proof criteria, the fire extinguishing after large-scale silo catches fire is very difficult, should consider control and prevention, rather than fire-fighting fire extinguishing.
Summary of the invention
Purpose of the present invention just is to provide a kind of large-scale raw coal silo is implemented the method for inactive protect, thereby reaches that raw coal glows in the control and prevention silo, the purpose of spontaneous combustion, blast, the security that improves the raw coal silo.
Providing to be suitable for the inertia protection device that above-mentioned raw coal silo inertia guard method is used, is another goal of the invention of the present invention.
The present invention intends adopting at least a in the following method that the raw coal silo is implemented inactive protect:
1, telescopic pneumatic device is installed on roof plate of silo, according to the coal seam height, automatically the height of adjusting the telescopic pneumatic device gas outlet is to the top, coal seam, inert gas is pressed close to the surface, coal seam to charge in the silo, displace the imflammable gas and the air on surface, coal seam, reach purpose raw coal and outside air isolation.
2, around the pre-buried many group inflatable components of silo wall wall, to the coal seam, charge into inert gas from multi-faceted, multi-angle, exclude imflammable gas and air in the coal seam, suppress the generation of spontaneous combustion of coal seam tendency by the gas outlet that is distributed on the silo wall wall.
3, in the silo bottom lock pneumatic module is set, the place charges into inert gas to coal unloading hole, makes between the coal unloading hole and the external world and forms positive differential pressure, pins coal unloading hole, stops extraneous air to be scurried in the silo by coal unloading hole.
The present invention by above-mentioned lock, fill, change three kinds of inactive protect methods, prevent comprehensive, profoundly and suppressed the spontaneous combustion and the blast of raw coal and space in the silo, formed the effective raw coal silo safety precautions of a cover.
Wherein, the telescopic pneumatic device gas outlet is adjusted at when inflating in silo apart from the height place in 1～5 meter in coal seam; have best inactive protect effect, can farthest displace the imflammable gas and the air on surface, coal seam, and inert gas be covered the surface in coal seam.If the height of telescopic pneumatic device gas outlet is too high, the inert gas that charges into can not directly arrive the surface, coal seam, and replacement result and coverage effect are all undesirable; And if Height Adjustment is too low, the inert gas that charges into is kicked up the coal dust on surface, coal seam again easily, and dust concentration strengthens in the space, increases the danger of blasting.
The inert gas that charges in the raw coal silo can be N
2, also can be CO
2Perhaps flue gas can select various sources of the gas to make up arbitrarily according to actual needs, both can use the inactive protect of locking simultaneously, fill, changing with a kind of source of the gas, also can use different sources of the gas to implement separately inactive protect respectively.
Particularly when implementing the ventilation inactive protect of raw coal silo upper space, the gas consumption maximum, if at this moment adopt thermal power plant waste gas---flue gas can guarantee that as the inerting source of the gas air demand is big, ventilation effect is good fast, operating cost is low.Flue gas just can use after will passing through purification, dehumidifying and cooling processing earlier, with anti-pollution raw coal silo.
In order to implement above-mentioned inactive protect method better; the present invention also provides a kind of inertia protection device of raw coal silo, and this protective device is implemented the inactive protect that changes, fill, lock by telescopic pneumatic device, inflatable component and three parts of lock pneumatic module respectively.Wherein,
The flexible pipe of telescopic pneumatic device for curling, be coiled in together, be fixedly mounted on the roof plate of silo by a support, the air inlet that is positioned at the center is connected with feeder, the gas outlet is sagging to be passed in the silo, rolling and putting down of telescopic pneumatic device flexible pipe by Electric Machine Control, thereby adjust the height of gas port in silo.
Because the flexible pipe quality of telescopic pneumatic device is soft, when silo inflate, is subjected to the influence of air-flow easily, the gas outlet may about play or swing, cause the instability of aeration gas flow.For this reason, the present invention has installed a self-stabilization type inflatable component again at the place, gas outlet of telescopic pneumatic device, pushes down the gas outlet by the own wt of self-stabilization type inflatable component on the one hand, reduces the play up and down of gas outlet as far as possible; On the other hand, the self-stabilization type assembly is provided with a belt air nozzle in horizontal direction, is communicated with the gas outlet, and the air-flow along continuous straight runs that makes the gas outlet ejection is equably to spraying all around, thereby avoided swinging of gas outlet, guaranteed in silo, to charge into the airflow stability of gas.
Inflatable component is formed by being embedded in the gas outlet that is provided with on silo wall inflation core pipe, air intake branch and the wall wall within the walls, wherein inflate the core pipe and connect feeder by air intake branch, outlet is communicated with gas outlet on the silo wall wall, charges into inert gas from multi-faceted, multi-angle to the coal seam.
Designed the inflatable component of two kinds of forms among the present invention, a kind of is a some ring type inflatable component, promptly be arranged on the point-like opening of gas outlet on the silo wall wall for being interrupted, from the air-flow of this gas outlet ejection is the point-like air-flow that is interrupted, correspondingly, at the pre-buried within the walls inflation core pipe of the silo wall at each place, gas outlet, and the process air intake branch is connected with feeder; Another kind is an endless belt formula inflatable component, the gas outlet that promptly is arranged on the silo wall wall is the banded opening of a continued circling, the air-flow that sprays from this gas outlet is the continuous zonal wind around silo wall wall, correspondingly, become an annulus around the pre-buried many inflation core pipe spellings of silo wall wall, and on every inflation core pipe, evenly being provided with a plurality of outlets, every inflation core pipe all is connected with feeder through an air intake branch.
Coal dust in the silo probably falls into the gas outlet on the silo wall wall falling all the time, and the gas outlet is stopped up, influence is inflated in silo, therefore, the present invention is designed to downward-sloping certain angle with the opening direction of gas outlet, has guaranteed can not stop up the gas outlet when coal dust falls.
Change air intake branch and inflation core pipe for convenience, one deck sleeve pipe also is installed in the outside of air intake branch.
The lock pneumatic module is made up of lock tracheae and flapper, and the lock annulus trachealis is around the coal unloading hole place that is installed in the silo bottom, and the inert gas that connected feeder is provided is passed into the coal unloading hole place.
Coal dust is after the ring type machine for unloading coal draws off from coal unloading hole, directly be transported in the coal spout by the ring type coal conveyor, falling into coal conveyer belt transports, therefore, the below of coal unloading hole is a unlimited system, the inert gas that feeds coal unloading hole is easy to together be discharged to outside the silo with coal dust, causes the consumption of inerting tolerance to increase, and does not reach the purpose of pinning coal unloading hole.For this reason, a flapper is installed in the coal spout of the present invention below coal unloading hole, this flapper is when guaranteeing coal breakage, pin inert gas, do not allow it discharge outside the silo, thereby between the coal unloading hole and the external world, form positive differential pressure, pin coal unloading hole, stop extraneous air to be scurried in the silo by coal unloading hole.
Inactive protect method and the with it supporting inertia protection device of the present invention by locking, fill, changing effectively prevented and controlled spontaneous combustion, the explosion accident of raw coal in the silo, formed comprehensive, profound raw coal silo safety precautions.
According to actual needs, can select separately to lock, fill, change in three kinds of methods someway or they are carried out various combinations implement inactive protects, to satisfy the prevention and control requirement under the different situations.So guard method of the present invention is flexible, can reach best protection effect with most economical inactive protect method.The inactive protect method of particularly filling and changing, though gas consumption is little, inactive protect directly, effectively.
Use telescopic pneumatic device to reach surface replacement coal seam, coal seam superjacent air space gas, not only inerting gas can directly reach the surface, coal seam, displace imflammable gas and air, do not stay the dead angle, replacement result is good, and can guarantee that cold inert gas covers the surface, coal seam, reach maximum coverage effect and best isolation purpose.
The gas outlet that is provided with on the silo wall wall has guaranteed the even inflation in silo; Its unique design has shock resistance, wear-resistant again, prevents the characteristics that coal breakage stops up, and can not destroy original intensity of raw coal silo wall wall.
Inertia guard method of the present invention and inertia protection device also can be widely used in the safety precaution in inflammable and explosive places such as powder magazine, silo, oil depot, colliery, chemical workshop.
Description of drawings
Fig. 1 is the inertia protection device structural representation of large-scale raw coal silo;
Fig. 2 is the inertia protection device structural representation of medium-sized raw coal silo;
Fig. 3 controls schematic diagram automatically for the raw coal silo inertia protection device;
Fig. 4 is the structural representation of telescopic pneumatic device;
Fig. 5 is the structural representation of inflatable component;
Fig. 6 is the structural representation of endless belt formula inflatable component among Fig. 5;
Fig. 7 is the structural representation of Fig. 5 mid point ring type inflatable component;
Fig. 8 is the structural representation of lock pneumatic module part.
The specific embodiment
Present embodiment is the concrete application example of raw coal silo inertia protection device on large-scale raw coal silo more than 3 tons.
The structure of the above large-scale raw coal silo of 3 tons as shown in Figure 1, its agent structure is the round silo that armored concrete is built, and is provided with a hollow support post 17 in silo central authorities, silo inside is circular structure.Silo top is the roof plate of silo 9 of flat-top, is provided with ring type coal-distributing machine 6 coal in silo above, and the dust that when deduster 7 is used for coal kick up in the surface, coal seam is removed.The tapered closing in the bottom of silo, and the umbrella awl end of annular, be set in the bottom, the outer cone bottom is provided with two ring type machine for unloading coals 13 and ring type coal conveyor 14 in annulus, is used for unloading coal from silo, the coal dust that draws off falls into the coal spout 16 of below, is transported by coal conveyer belt 15.
Several telescopic pneumatic devices 5 are installed on roof plate of silo 9, its structure as shown in Figure 4, curling flexible pipe for coiling, be fixedly mounted on the roof plate of silo 9 by support 401, the air inlet 402 that is positioned at the center is connected with the inerting gas air supply pipe 2 of feeder 1, the gas outlet is stretched in the silo downwards, and at the gas outlet end self-stabilization type inflatable component 8 is installed, and self-stabilization type inflatable component 8 is provided with the belt air nozzle 403 of the horizontal direction that communicates with the gas outlet.By the rolling and putting down of Electric Machine Control telescopic pneumatic device 5 flexible pipes, adjust the height of gas port in silo.
According to the design feature of the tapered closing in raw coal silo bottom, in the wall wall 4 of silo middle and lower part many places pre-buried continuously endless belt formula inflatable component 10 and the some ring type inflatable component 11 that is interrupted, in the coal seam, charge into inert gas.The structure of endless belt formula inflatable component 10 and some ring type inflatable component 11 as shown in Figure 5, form by the gas outlet 504 that is provided with on the inflation core pipe 501, air intake branch 502 and the wall wall 4 that are embedded in the silo wall wall 4, wherein inflate core pipe 501 and connect the inerting gas air supply pipe 3 of feeders 1 by air intake branch 502, outlet is communicated with gas outlet 504 on the silo wall wall 4.Open Side Down in gas outlet 504 on the silo wall wall 4 inclination certain angle, the outside of air intake branch 502 is with one deck sleeve pipe 503.
Endless belt formula inflatable component 10 and some ring type inflatable component 11 have essentially identical structure, its difference only is, point ring type inflatable component 11 as shown in Figure 7, be arranged on the point-like opening of gas outlet 504 on the silo wall wall 4, in the silo wall wall 4 at each 504 place, gas outlet, be embedded with an inflation core pipe 501 for being interrupted; Endless belt formula inflatable component 10 as shown in Figure 6, the gas outlet 504 that is arranged on the silo wall wall 4 is the banded opening of a continued circling, correspondingly, pre-buried many inflation core pipes 501 become an annulus around spelling in silo wall wall 4, and on every inflation core pipe 501, evenly being provided with a plurality of outlets, every inflation core pipe 501 all is connected with feeder 1 through an air intake branch 502.
Particularly, as Fig. 1, in place three place's wall walls 4 of the tip of silo bottom umbrella cone, silo housing and the 17 beginning tapers closing ins of hollow support post, around pre-buried three endless belt formula inflatable components 10; In the wall wall 4 around hollow support post 17 bottoms and umbrella cone base, each is evenly pre-buried some spots ring type inflatable component 11.
The structure of lock pneumatic module is made up of lock tracheae 12 and flapper 18 as shown in Figure 8, locks tracheae 12 around the coal unloading hole place that is installed in ring type machine for unloading coal 13 belows, silo bottom, and is connected with the inerting gas air supply pipe 3 of feeder 1; Flapper 18 is installed in the coal spout 16 of ring type coal conveyor 14 belows.
According to the structure of raw coal silo coal unloading hole, adopt high resiliency Mi Gong sealing 801,802,803,804,805 all leak point sealings with ring type machine for unloading coal 13 and ring type coal conveyor 14, seal air and enter.
Rely on said apparatus, adopt 8 pairs of silo upper spaces of telescopic pneumatic device 5 and self-stabilization type inflatable component to implement to change inerting gas; Adopt endless belt formula inflatable component 10 and some ring type inflatable component 11 in the coal seam, to charge into inerting gas; By the lock pneumatic module coal unloading hole being filled the inerting gas lock lives air and enters.
The automatic control that the raw coal silo is implemented inactive protect as shown in Figure 3, the inert gas that is used to implement inactive protect is provided by inerting gas feeder 1, be transported to the telescopic pneumatic device 5 on silo top by inerting gas air supply pipe 2, and by 308 controls of inerting gas control valve; Be transported to air accumulator 301 by inerting gas air supply pipe 3, and then be transported to endless belt formula inflatable component 10, the some ring type inflatable component 11 of silo bottom and lock pneumatic module 12, and by 302 master controls of inerting gas control valve, inerting gas control system/pressure-reducing valve 303,304,305 is controlled the inerting gas that enters endless belt formula inflatable component 10, lock pneumatic module 12, some ring type inflatable component 11 respectively.
On-site control 310 receives by pressure sensor 309 data signals transmitted on level sensor 306, oxygen/combustible gas sensor 307, the air accumulator 301, be uploaded to central switch board 311,310 pairs of inerting gas control valves of central authorities' switch board 311 commander's on-site controls 302,308, inerting gas control system/pressure-reducing valve 303,304,305, telescopic pneumatic device 5, deduster 7 is controlled.
Wherein, the concrete working method of lock gas is: according to the signal of central switch board 311, and control inerting gas control system/pressure-reducing valve 304, the pressure of carrying out open and close and charging into inert gas is regulated pressure adjustable range 0～5kpa.The mode of inert gas injecting is a batch (-type), promptly inflates 1～60min, stops 1～60min; Intermittently aeration phase continues 30～600min for the first time, enters the intermittently tonifying Qi stage subsequently, and cycle 1～72h determines according to actual conditions, up to coal is exhausted.
The concrete working method of inflation is: according to the signal of central switch board 311, and control inerting gas control system/pressure-reducing valve 303,305, the pressure of carrying out open and close and charging into inert gas is regulated pressure adjustable range 0～5kpa.The mode of inert gas injecting is a batch (-type), promptly inflates 1～60min, stops 1～60min; Intermittently aeration phase continues 30～600min for the first time, enters the intermittently tonifying Qi stage subsequently, and cycle 1～72h determines according to actual conditions, up to coal is exhausted.
Simultaneously, also to determine the open and close of inerting gas control system/pressure-reducing valve 303,305 according to the height in coal seam.When the height 1～5m of coal seam height distance endless belt formula inflatable component 10, should close inerting gas control system/pressure-reducing valve 303; When the coal seam height is close to the height of endless belt formula inflatable component 10, should close inerting gas control system/pressure-reducing valve 305, make the coal dust airborne dust with the inert gas that prevents to charge into.
The concrete working method of ventilation is: according to the signal of oxygen/combustible gas sensor 307 detections, when combustable gas concentration reaches early warning, central authorities' switch board 311 sends signal, open inerting gas control valve 308, regulating motor according to the coal seam height makes self-stabilization type inflatable component 8 reach 1～5m place, upper surface, coal seam injection inerting gas automatically, when not controlling with assurance contingency spontaneous combustion of coal seam dangerous tendency, guarantee the inert gas surface, coal seam of going directly, do not drive fuel gas and air out of the end of from toward height with not staying the dead angle, obtain preferably replacement result and reach maximum coverage effect.Scavenge pressure adjustable range 0～5kpa.Signal according to oxygen/combustible gas sensor 307 is surveyed when oxygen concentration drops to 10～16% safety requirements, stops to inject inerting gas automatically, enters the intermittently tonifying Qi stage, and cycle 1～72h determines according to actual conditions, up to coal is exhausted.
Provided by feeder 1, the inert gas of carrying by inerting gas air supply pipe 3 has N
2And CO
2Two kinds, can choose any one kind of them according to different needs.
Select N for use
2The time, inerting gas preparation facilities is introduced original air, and process absorption or membrane separation technique are prepared the nitrogen of 0.3～1.6Mpa, are stored in the air accumulator 301 10～10000 cubic metres of gas storage capacity, gas storage pressure 0.3～1.6Mpa.When pressure sensor 309 was surveyed air accumulator 301 pressure less than setting value, central switch board 311 sent signal and opens the additional nitrogen of inerting gas preparation facilities automatically, shuts down when reaching setting pressure.
Select CO for use
2The time, inerting gas preparation facilities is introduced liquid carbon dioxide, through the gaseous carbon dioxide of heating, the vaporization technology is prepared 0.01～1.6Mpa, directly sends to lock, gas charging system by inerting gas air supply pipe 2.
Provide by feeder 1, the inert gas of carrying by inerting gas air supply pipe 2 is the inerting source of the gas of fume treatment auxiliary preparation, the inerting source of the gas mainly is the oxygen content that produces after the combustible work by combustion less than 17% flue gas, it can be the flue gas that boiler such as fuel oil, combustion gas, fire coal or burner produce, it also can be the flue gas that power-equipments such as gas turbine, internal combustion engine produce, be according to the inerting requirement cool off, after the PROCESS FOR TREATMENT such as purification, dehumidifying, the temperature that obtains between 0～200 ℃, the no corrosion treatment flue gas of oxygen content between 1～17%.
Present embodiment is the concrete application example of raw coal silo inertia protection device on medium-sized raw coal silo below 1 ton.
The structure of the following medium-sized raw coal silo of 1 ton as shown in Figure 2, its agent structure is the round silo that armored concrete is built; Silo top is the roof plate of silo 9 of flat-top, is provided with ring type coal-distributing machine 6 coal in silo above, and the dust that when deduster 7 is used for coal kick up in the surface, coal seam is removed; The tapered closing in the bottom of silo, and the umbrella awl end, be set in the bottom, in the awl bottom ring type machine for unloading coal 13 and ring type coal conveyor 14 are set, be used for unloading coal from silo, the coal dust that draws off falls into the coal spout 16 of below, is transported by coal conveyer belt 15.
Several telescopic pneumatic devices 5 are installed on the roof plate of silo 9, air inlet is connected with the inerting gas air supply pipe 2 of feeder 1, the gas outlet is stretched in the silo downwards, and at gas outlet end installation self-stabilization type inflatable component 8, by Electric Machine Control telescopic pneumatic device 5, adjust the height of gas port in silo.
In the wall wall 4 of silo bottom beginning taper closing in place, around pre-buried a circle endless belt formula inflatable component 10; In the wall wall 4 around the umbrella cone base, evenly pre-buried some spots ring type inflatable component 11; At the tip of umbrella cone, also pre-buried some ring type inflatable component 11 charges into inert gas jointly in the coal seam.Inflatable component connects the inerting gas air supply pipe 3 of feeder 1.
The lock tracheae 12 of lock pneumatic module is around the coal unloading hole place that is installed in ring type machine for unloading coal 13 belows, silo bottom, and is connected with the inerting gas air supply pipe 3 of feeder 1; Flapper 18 is installed in the coal spout 16 of ring type coal conveyor 14 belows.
Rely on said apparatus, adopt 8 pairs of silo upper spaces of telescopic pneumatic device 5 and self-stabilization type inflatable component to implement to change inerting gas; Adopt endless belt formula inflatable component 10 and some ring type inflatable component 11 in the coal seam, to charge into inerting gas; By the lock pneumatic module coal unloading hole being filled the inerting gas lock lives air and enters.
The raw coal silo is implemented the automatic control of inactive protect with embodiment 1.
Claims (10)
1, raw coal silo inertia guard method is characterized in that taking at least a in the following method that the raw coal silo is implemented inactive protect:
A. the telescopic pneumatic device of roof plate of silo installation adjusts port hight automatically to the top, coal seam, charges into inert gas, displaces the gas of top, coal seam in the silo;
B. by being embedded in silo wall many groups inflatable component within the walls,, exclude gas in the coal seam with multi-faceted the charging in the coal seam in the gas outlet of inert gas on silo wall wall;
C. the silo bottom is provided with the lock pneumatic module, charges into inert gas to coal unloading hole, and the obstruct extraneous air is scurried in the silo by coal unloading hole.
2, raw coal silo inertia according to claim 1 guard method is characterized in that telescopic pneumatic device is to charge into inert gas adjusting to the height place of gas outlet apart from 1～5 meter in coal seam in silo.
3, raw coal silo inertia according to claim 1 guard method is characterized in that by the inert gas flow of inflatable component through feeding silo coal seam, gas outlet can be continuous zonal wind, also can be the point-like air-flow that is interrupted.
4, raw coal silo inertia according to claim 1 guard method is characterized in that the inert gas that charges in the silo is flue gas, N
2, CO
2In one or both.
5, raw coal silo inertia protection device is characterized in that this device comprises:
Telescopic pneumatic device is installed on the roof plate of silo, and air inlet is connected with feeder, and the gas outlet is passed in the silo;
Inflatable component is formed by being embedded in the gas outlet that is provided with on silo wall inflation core pipe, air intake branch and the wall wall within the walls, and inflation core pipe connects feeder by air intake branch, and outlet is communicated with gas outlet on the silo wall wall;
The lock pneumatic module comprises lock tracheae and flapper, connects feeder around the lock tracheae that is installed in silo coal unloading hole place, and outlet communicates with coal unloading hole, below the lock tracheae flapper is installed.
6, raw coal silo inertia protection device according to claim 5 is characterized in that at the gas outlet of telescopic pneumatic device end the self-stabilization type inflatable component being installed, and the self-stabilization type inflatable component is provided with the belt air nozzle of the horizontal direction that communicates with the gas outlet.
7, raw coal silo inertia protection device according to claim 5 is characterized in that the point-like opening of gas outlet for being interrupted on the silo wall wall.
8, raw coal silo inertia protection device according to claim 5 is characterized in that the gas outlet on the silo wall wall is the banded opening of a continued circling.
9,, it is characterized in that the downward-sloping certain angle of opening direction of the gas outlet on the silo wall wall according to claim 5,7,8 described raw coal silo inertia protection devices.
10, raw coal silo inertia protection device according to claim 5 is characterized in that also being equipped with one deck sleeve pipe outside the air intake branch of inflatable component.
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| CNB2004100122147A CN100443132C (en) | 2004-03-30 | 2004-03-30 | Inerting protection method and protection device in use for silo of storing raw coal |
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| CNB2004100122147A CN100443132C (en) | 2004-03-30 | 2004-03-30 | Inerting protection method and protection device in use for silo of storing raw coal |
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| CN106927161A (en) * | 2015-12-29 | 2017-07-07 | 北京普兰德电力技术有限公司 | Coal bunker safety comprehensive governing system |
| CN107082205A (en) * | 2017-05-18 | 2017-08-22 | 北京工业大学 | A kind of ball storehouse inertia protection device |
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| CN109733756A (en) * | 2019-01-03 | 2019-05-10 | 国家能源投资集团有限责任公司 | Coal bunker |
| CN110217534A (en) * | 2019-07-05 | 2019-09-10 | 华能济南黄台发电有限公司 | Prevention and treatment stores the loading line of spontaneous combustionof coal and prevents and treats from burning method |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2033215C1 (en) * | 1991-05-31 | 1995-04-20 | Всероссийский научно-исследовательский институт противопожарной обороны | Method for preventing and fighting fires in silo storages |
| DE4432346C1 (en) * | 1994-09-12 | 1995-11-16 | Messer Griesheim Gmbh | Rendering stored matter inert in a silo |
-
2004
- 2004-03-30 CN CNB2004100122147A patent/CN100443132C/en not_active Expired - Fee Related
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| CN107082205A (en) * | 2017-05-18 | 2017-08-22 | 北京工业大学 | A kind of ball storehouse inertia protection device |
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| CN110217534A (en) * | 2019-07-05 | 2019-09-10 | 华能济南黄台发电有限公司 | Prevention and treatment stores the loading line of spontaneous combustionof coal and prevents and treats from burning method |
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