CN103848423B - Circulation closed type coal mine gob inert gas generator - Google Patents
Circulation closed type coal mine gob inert gas generator Download PDFInfo
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- CN103848423B CN103848423B CN201410082359.8A CN201410082359A CN103848423B CN 103848423 B CN103848423 B CN 103848423B CN 201410082359 A CN201410082359 A CN 201410082359A CN 103848423 B CN103848423 B CN 103848423B
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Abstract
The invention discloses a kind of circulation closed type coal mine gob inert gas generator, comprise aerogenesis unit, detecting unit, cooling unit and controller, the combustion powder automatic feed unit that described aerogenesis unit comprises rare gas element producer and is communicated with rare gas element producer inside, described detecting unit comprises gas density and O
2gas analyzer, described cooling unit comprises at least one group of cooling filter.Methane gas in the guard space of coal mine gob and CO (carbon monoxide converter) gas are extracted out by the present invention; and burnt by rare gas element producer; then the rare gas element of generation is filled with again the protected relative enclosed space of coal mine gob; it decreases the demand to combustion powder source in device to a certain extent; serve the useless effect of profit; and by the mode of active defense, ensure that the essential safety of protected relative enclosed space in coal mine gob.
Description
Technical field
The invention belongs to technical field of fire safety, particularly a kind of active safety fire protection technology, is specifically applied to the inert gas generator protected enclosed space in coal mine gob being carried out to active safety protection.
Background technology
The rare gas element of carbonic acid gas, IG541, heptafluoro-propane and so on is used in fire extinguishing as firing-fighting medium, and once be finished, must supplement in time, makes repair and maintenance cost and time added cost.
In process of coal mining, goaf gas is the disaster that China's coal-mine is the most serious.By the impact of unstable geology, depths, coal seam, worked-out section is once conditional mutation, and gas will sweep along 1,100 tons of coal cinders to gush out instantaneously, causes serious disaster.Colliery spontaneous combustion serious threat the safety in production in colliery, is govern the production in colliery, and the spontaneous combustion of colliery, worked-out section occurs to occupy part and parcel totally in colliery spontaneous combustion.There is the inflammable gass such as volatile gas, carbon monoxide in it; carbon dioxide can be adopted to pass through substitute mode; act on airtight coal mine gob enclosed space; displace the mixed gass such as the gas in the enclosed space of worked-out section, carbon monoxide; form inerting gas shield district, can realize carrying out active safety fire protection to the gas in the relative enclosed space of coal mine gob, carbon monoxide inflammable gas medium.But carbonic acid gas is because of storing relation, need to build very large wet tank, be finished once the liquid carbon dioxide in tank and need to supplement in time, increase transportation cost and the time cost of carbonic acid gas supply, and also need through further process by inflammable gases such as carbon dioxide replacement gas out, carbon monoxide, can to environment if directly drain.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing; provide a kind of gas in protected for coal mine gob relative enclosed space and CO (carbon monoxide converter) gas can extractions out; and send into rare gas element producer and burn; then the rare gas element of generation is filled with the protected relative enclosed space in coal mine gob again, thus ensures the circulation closed type coal mine gob inert gas generator of the protected relative enclosed space safety in coal mine gob.
Technical scheme of the present invention is achieved in that circulation closed type coal mine gob inert gas generator, it is characterized in that: comprise aerogenesis unit, detecting unit, cooling unit and controller, the combustion powder automatic feed unit that described aerogenesis unit comprises rare gas element producer and is communicated with rare gas element producer inside, described detecting unit comprises gas density and O
2gas analyzer, described cooling unit comprises at least one group of cooling filter, described gas density and O
2the inlet end of gas analyzer is communicated with the protected relative enclosed space in coal mine gob by blower fan I, its outlet side is connected by the entrance end of pipeline with two-position three way electrically-controlled valve I, an exit end of described two-position three way electrically-controlled valve I is by pipeline and rare gas element producer inlet communication, its another exit end is communicated with the protected relative enclosed space in coal mine gob by blower fan III, the outlet of described rare gas element producer is communicated with cooling unit by pipeline, described cooling unit is communicated with the protected relative enclosed space in coal mine gob by blower fan II, described combustion powder automatic feed unit, gas density and O
2gas analyzer and two-position three way electrically-controlled valve I are connected with controller respectively.
Circulation closed type coal mine gob of the present invention inert gas generator, described in it, detecting unit also comprises O
2, CO gas analyzer, described O
2, CO gas analyzer is communicated with cooling unit by pipeline; described blower fan II is connected by the entrance end of pipeline with two-position three way electrically-controlled valve II; an exit end of described two-position three way electrically-controlled valve II is communicated with by the protected relative enclosed space in pipeline and coal mine gob; its another exit end is communicated with rare gas element producer by pipeline, described O
2, CO gas analyzer and two-position three way electrically-controlled valve II be connected with controller respectively.
Circulation closed type coal mine gob of the present invention inert gas generator, it is at described blower fan I and gas density and O
2the pipeline that gas analyzer is communicated with is provided with the gas flow sensor be connected with controller.
Circulation closed type coal mine gob of the present invention inert gas generator, rare gas element producer described in it comprises the supporting seat connected successively from lower to upper, main heating zone, secondary heating zone and rare gas element flue, and described supporting seat is provided with the main air intake terminal pad be connected with two-position three way electrically-controlled valve I, the non-inert gas secondary combustion uptake terminal pad be connected with two-position three way electrically-controlled valve II and fire door; The main process furnace inner furnace that described main heating zone comprises main process furnace inner furnace heat-insulation blanket, the outer boiler clothing of main process furnace and is arranged between main process furnace inner furnace heat-insulation blanket and the outer boiler clothing of main process furnace, in described main heating zone, be provided with at least one group of resistance heating layer, described main heating zone is provided with some fuel-feed holes be connected with combustion powder automatic feed unit; Described secondary heating zone is made up of at least one section of secondary heating zone, the secondary process furnace inner furnace that every section of secondary heating zone comprises secondary process furnace inner furnace heat-insulation blanket, the outer boiler clothing of secondary process furnace and is arranged between secondary process furnace inner furnace heat-insulation blanket and the outer boiler clothing of secondary process furnace, the secondary zone of heating be made up of high temperature resistant pallet and supporting component is provided with in described every section of secondary heating zone, described secondary zone of heating is provided with at least one group of iron wire volume, described every section of secondary heating zone is provided with and adds iron wire rolling door for what add iron wire volume; Described rare gas element flue comprises funnel shaft and funnel shaft heat-insulation blanket, described rare gas element flue is provided with the chimney air flue be connected with cooling unit and exports.
Circulation closed type coal mine gob of the present invention inert gas generator, it is provided with heat reflection material powder collector in described supporting seat, below main heating zone.
Circulation closed type coal mine gob of the present invention inert gas generator, it is coated with refractory inorganic paint layer in the outer boiler clothing of described main process furnace, the outer boiler clothing of secondary process furnace and funnel shaft appearance.
Circulation closed type coal mine gob of the present invention inert gas generator, it is provided with furnace temperature detection piece in described every section of secondary heating zone, and described furnace temperature detection piece is connected with controller.
Circulation closed type coal mine gob of the present invention inert gas generator; cooling unit described in it comprises first step cooling filter and second stage cooling filter; the outlet of described rare gas element producer is communicated with first step cooling filter by pipeline; described first step cooling filter is communicated with second stage cooling filter by pipeline, and described second stage cooling filter is communicated with the protected relative enclosed space in coal mine gob by blower fan II.
Circulation closed type coal mine gob of the present invention inert gas generator, described in it, second stage cooling filter is provided with temperature sensor, described temperature sensor is connected with controller, and the pipeline that the outlet of described rare gas element producer is communicated with first step cooling filter is provided with vacuum breaker.
Circulation closed type coal mine gob of the present invention inert gas generator, it enters at the protected relative enclosed space in the described coal mine gob of connection, go out end pipeline on be respectively arranged with into, exit end safety valve and entering, exit end ball valve, entering of the protected relative enclosed space in described coal mine gob, go out end respectively by entering, exit end ball valve enters with corresponding, the safety valve of exit end is communicated with, described two-position three way electrically-controlled valve II is communicated with entrance end safety valve by check valve, described first step cooling filter is communicated with water cooler safety valve by pipeline.
The present invention utilize combustion powder and the protected relative enclosed space in coal mine gob in gas and CO (carbon monoxide converter) gas, by controller furnace temperature regulated automatically and control, guarantee the oxygen generation oxidizing reaction in combustion medium and suction burner hearth in air, generate carbon dioxide and other rare gas elementes, make the gas in system pipeline, CO (carbon monoxide converter) gas is constantly consumed, until rare gas element is constantly arrived worked-out section enclosed space by injection, reach and destroy gas in the enclosed space of coal mine gob, carbon monoxide is blasted, the condition of burning, thus the inactive protect played worked-out section enclosed space.Owing to strictly controlling temperature of reaction, ensure, in reaction process, not produce CO, and CO does not occur
2reduction reaction.Mixed gas after combustion reactions or air, it is containing oxygen rate lower than combustion-supporting concentration conditions, and the gas produced through the present invention is: nitrogen, CO
2, O
2and other rare gas elementes, thus ensure the safety of protected relative enclosed space.
The present invention is utilized by the collection to goaf gas, carbon monoxide, burning; decrease the demand to combustion powder source in device to a certain extent; serve the useless effect of profit; by active defense mode, ensure that the essential safety of protected relative enclosed space in coal mine gob, in addition; the present invention structurally defines inner sealing with the protected relative enclosed space in coal mine gob and circulates; achieving and pollute " zero " of environment, be beneficial to energy-saving and emission-reduction, is a kind of energy saving environmental protection product.
Accompanying drawing explanation
Fig. 1 is systematic schematic diagram of the present invention.
Fig. 2 is structural representation of the present invention
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the front view of Fig. 2.
Fig. 5 is the structural representation of rare gas element producer in the present invention.
Fig. 6 is the internal structure schematic diagram of rare gas element producer.
Mark in figure: 1 is the protected relative enclosed space in coal mine gob, and 2 is exit end ball valve, and 3 is exit end safety valve, and 4 is blower fan I, and 5 is gas flow sensor, and 6 is gas density and O
2gas analyzer, 7 is O
2, CO gas analyzer, 8 is two-position three way electrically-controlled valve I, 9 is combustion powder automatic feed unit, 10 is controller, 11 is rare gas element producer, 12 is furnace temperature detection piece, 13 is first step cooling filter, 14 is second stage cooling filter, 15 is temperature sensor, 16 is blower fan II, 17 is two-position three way electrically-controlled valve II, 18 is blower fan III, 19 is water cooler safety valve, 20 is check valve, 21 is entrance end safety valve, 22 is entrance end ball valve, 23 is vacuum breaker, 24 is the liquid level sensor of first step cooling filter, 25 is the liquid level sensor of second stage cooling filter, 26, 27 connect for the pipeline corresponding with the protected relative enclosed space in coal mine gob enter, outlet terminal pad, 28 is supporting seat, 29 is main heating zone, 30 is secondary heating zone, 31 is rare gas element flue, 32 is main air intake terminal pad, 33 is non-inert gas secondary combustion uptake terminal pad, 34 is fire door, 35 is main process furnace inner furnace heat-insulation blanket, 36 is the outer boiler clothing of main process furnace, 37 is main process furnace inner furnace, 38 is resistance heating layer, 39 is fuel-feed hole, 40 is secondary process furnace inner furnace heat-insulation blanket, 41 is the outer boiler clothing of secondary process furnace, 42 is secondary process furnace inner furnace, 43 is secondary zone of heating, 44 for adding iron wire rolling door, 45 is funnel shaft, 46 is funnel shaft heat-insulation blanket, 47 is chimney air flue outlet, 48 is heat reflection material powder collector.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As Figure 1-4, circulation closed type coal mine gob inert gas generator, comprise aerogenesis unit, detecting unit, cooling unit and controller 10, this device is connected with the pipeline being arranged in coal mine gob in advance by import and export terminal pad 26,27.
The combustion powder automatic feed unit 9 that described aerogenesis unit comprises rare gas element producer 11 and is communicated with rare gas element producer 11 inside, described combustion powder automatic feed unit comprises along one group of uniform feed mechanism of rare gas element producer circumferential direction, material loading motor and blow material motor etc., inlet amount by charging motor according to electric control system to temperature sensor, gas density, the signal of the detection feedback of oxygen and CO (carbon monoxide converter) gas analyser, carry out automatic transmission, achieve self-adaptation for amount, blow material motor and opened or closed the air blast motor blown in material pipe by magnetic valve, combustion powder is mainly the mixture of carbon dust and iron powder.
Described detecting unit comprises gas density and O
2gas analyzer 6 and O
2, CO gas analyzer 7, wherein gas density and O
2gas analyzer is used for the protected relative enclosed space in coal mine gob to the gas density of gas in pipelines of this section of rare gas element producer and the detection of oxygen concn and analysis, O
2, CO gas analyzer is used for the carbon monoxide concentration of rare gas element generated through rare gas element producer and the detection of oxygen concn and analysis.
Described cooling unit comprises first step cooling filter 13 and second stage cooling filter 14, for the cooling process of the rare gas element generated through rare gas element producer and filtration treatment and detect respectively by the liquid level sensor 24,25 in corresponding cooling filter and feed back level condition in corresponding cooling filter.The water cooling filter type of the rare gas element hot gas generated by rare gas element producer in cooling unit, because specific heat of water holds larger, be 4.183kJ/ (Kg DEG C) under normal temperature (20 degrees Celsius), so only need less volume just can have good cooling-down effect, and make floor space little.The cooling unit adopted in this device is embed type, greatly reduces taking of ground space.
Wherein, the outlet of described rare gas element producer 11 is communicated with first step cooling filter 13 by pipeline; described first step cooling filter 13 is communicated with second stage cooling filter 14 by inner wall feed-through pipeline; described second stage cooling filter 14 is communicated with by the protected relative enclosed space 1 in blower fan II 16 and coal mine gob, described gas density and O
2the inlet end of gas analyzer 6 is communicated with by the protected relative enclosed space 1 in blower fan I 4 and coal mine gob; its outlet side is connected by the entrance end of pipeline with two-position three way electrically-controlled valve I 8; an exit end of described two-position three way electrically-controlled valve I 8 is by pipeline and rare gas element producer 11 inlet communication; its another exit end is communicated with by the protected relative enclosed space 1 in the 3rd blower fan 18 and coal mine gob, described combustion powder automatic feed unit 9, gas density and O
2gas analyzer 6 and two-position three way electrically-controlled valve I 8 are connected with controller 10 respectively.When the described rare gas element being filled with coal mine gob is in cycle operation state, the protected relative enclosed space in coal mine gob, blower fan I, gas density and O
2circulation loop line is formed between gas analyzer, two-position three way electrically-controlled valve I and blower fan III.
Described O
2, CO gas analyzer 7 is communicated with second stage cooling filter 14 by pipeline; described blower fan II 16 is connected by the entrance end of pipeline with two-position three way electrically-controlled valve II 17; an exit end of described two-position three way electrically-controlled valve II 17 is communicated with by the protected relative enclosed space 1 in pipeline and coal mine gob; its another exit end is communicated with rare gas element producer 11 by pipeline, described O
2, CO gas analyzer 7 and two-position three way electrically-controlled valve II 17 be connected with controller 10 respectively, described controller is according to O
2, the result that detects of CO gas analyzer, control two-position three way electrically-controlled valve II and be communicated with by the protected relative enclosed space in pipeline and coal mine gob or rare gas element producer.Adopt gas concentration to detect respectively in rare gas element producer prime and rear class to analyze, by the on-line checkingi to oxygen level in latter two situation gas before rare gas element producer, to the on-line checkingi of the carbon monoxide gas concentration of rear class, when achieving device automated cycle, carry out the switching that partial circulating still adopts systemic circulation operating mode.
Wherein, at described blower fan I 4 and gas density and O
2the pipeline that gas analyzer 6 is communicated with is provided with the gas flow sensor 5 be connected with controller 10, for the detection of gas flow rate to air output, to realize by entrance end ball valve control coal mine gob mixed gas being entered to base runoff of the present invention through pipeline, to guarantee that the flow velocity of gas and CO (carbon monoxide converter) gas is controlled in safety range.In this device, the blower fan I at air intake place is by when in protected for coal mine gob relative enclosed space, gas and carbon monoxide inflammable gas are squeezed in the pipeline before rare gas element producer by pipeline; because the gas of the protected relative enclosed space in coal mine gob is inflammable, volatile gases; by the impact of electrostatic when it flows in the duct; therefore need to control its flow velocity; gas flow sensor is adopted to detect it; achieve the control to flow velocity, ensure that the safety of whole device and protected relative enclosed space.
Described second stage cooling filter 14 is provided with temperature sensor 15, and described temperature sensor 15 is connected with controller 10, and the pipeline that the outlet of described rare gas element producer 11 is communicated with first step cooling filter 13 is provided with vacuum breaker 23.Described temperature sensor is used for detecting and feedback through the cooled gas temperature of second stage cooling filter.On the pipeline of end, import and export end safety valve 21,3 and import and export end ball valve 22,2 is respectively arranged with at the protected relative enclosed space 1 in the described coal mine gob of connection; being communicated with the safety valve 21,3 of corresponding import and export end respectively by import and export end ball valve 22,2 into and out of end of the protected relative enclosed space 1 in described coal mine gob; described two-position three way electrically-controlled valve II 17 is communicated with entrance end safety valve 21 by check valve 20, and described first step cooling filter 13 is communicated with water cooler safety valve 19 by pipeline.Three safety valve are respectively used to the decompression protection of the gaseous tension in the enclosed space of protector import and export end place and first step cooling filter.
As illustrated in Figures 5 and 6, described rare gas element producer 11 comprise connect successively from lower to upper supporting seat 28, main heating zone 29, secondary heating zone 30 and rare gas element flue 31, it is fastenedly connected by screw each other, and carries out filling, with anti-gas-leak with refractory mortar to gap.
Described supporting seat 28 is provided with the main air intake terminal pad 32 be connected with two-position three way electrically-controlled valve I 8, the non-inert gas secondary combustion uptake terminal pad 33 be connected with two-position three way electrically-controlled valve II 17 and fire door 34; The main process furnace inner furnace 37 that described main heating zone 29 comprises main process furnace inner furnace heat-insulation blanket 35, the outer boiler clothing 36 of main process furnace and is arranged between main process furnace inner furnace heat-insulation blanket 35 and the outer boiler clothing 36 of main process furnace, at least one group of resistance heating layer 38 is provided with in described main heating zone 29, described resistance heating layer is made up of resistance wire tray and resistance wire disc carrier, and described main heating zone 29 is provided with some fuel-feed holes 39 be connected with combustion powder automatic feed unit 9; Described secondary heating zone 30 is made up of three sections of secondary heating zones, the secondary process furnace inner furnace 42 that every section of secondary heating zone comprises secondary process furnace inner furnace heat-insulation blanket 40, the outer boiler clothing 41 of secondary process furnace and is arranged between secondary process furnace inner furnace heat-insulation blanket 40 and the outer boiler clothing 41 of secondary process furnace, the secondary zone of heating 43 be made up of high temperature resistant pallet and supporting component is provided with in described every section of secondary heating zone, described secondary zone of heating 43 is provided with at least one group of iron wire volume, described every section of secondary heating zone is provided with and adds iron wire rolling door 44 for what add iron wire volume; Described rare gas element flue 31 comprises funnel shaft 45 and funnel shaft heat-insulation blanket 46, described rare gas element flue 31 is provided with the chimney air flue be connected with cooling unit and exports 47.Described main process furnace inner furnace heat-insulation blanket, secondary process furnace inner furnace heat-insulation blanket and funnel shaft heat-insulation blanket are used for road in the hot air temperature of inside and adjacent inner furnace or chimney to carry out heat insulation.
Wherein, heat reflection material powder collector 48 is provided with in described supporting seat 28, below main heating zone 29, described heat reflection material powder collects the collection can firing powder to micro residue and the heat penetrated by main heating zone width, main heating zone is reflexed to again while being focused on by heat by reflector, decrease radiations heat energy, and the insulation effect served to a certain extent fire box temperature, decrease thermal losses.The refractory inorganic paint layer being usually used in metallurgical furnace, pottery, glass, metal etc. is coated with in the outer boiler clothing 36 of described main process furnace, the outer boiler clothing 41 of secondary process furnace and funnel shaft 45 appearance, hull-skin temperature can be reduced fast, decrease the thermal radiation to produerr gas plant periphery simultaneously.Described every section of secondary heating zone is provided with furnace temperature detection piece 12, and described furnace temperature detection piece 12 and controller 10, described furnace temperature detects detection and the feedback of the furnace temperature being used for rare gas element producer.
According to the signal of central controller feedback, resistance heating layer in described rare gas element producer carries out zero load and preheats, detect after the design temperature reaching combustion powder energy complete oxidation through furnace temperature detection piece, to central controller feedback signal, combustion powder automatic feed cell operation, work is carried out in main heating zone comprehensively, gas in coal mine gob, carbon monoxide etc. are through pipeline, valve, main air intake terminal pad is extracted in the burner hearth of rare gas element producer, respectively through main heating zone, secondary heating zone high-temperature burner hearth passage, carry out perfect combustion, produce carbonic acid gas rare gas element, gas analyzer in system detects, analyze, after confirmation, rare gas element is returned to coal mine gob by the return-air duct of the system the other end, define tail gas in the seal cavity of coal mine gob, the displacement of the gases such as carbon monoxide.Generate rare gas element through bleeding, burning, return, replace, until detected gas, carbon monoxide concentration, make the condition that its concentration does not in the entire system reach burning, explodes, thus achieve the inactive protect to coal mine gob seal cavity.
This device and protected relative enclosed space define an airtight interior circular channel, achieve and the reduction of the gas inflammable gas in the guard space of coal mine gob and carbon monoxide inflammable gas and oxygen level is controlled, the gas inflammable gas in the protected space of coal mine gob and carbon monoxide inflammable gas is made to carry out burning because being drawn in rare gas element producer and reducing, the enclosed space of the whole protected object of coal mine gob is constantly full of by the rare gas element that device generates, even take, the whole guard space of coal mine gob is made no longer to possess the condition of burning, thus flammable object burning or because of thunderbolt in the protected space avoiding coal mine gob, the fire that electrostatic etc. cause.Wherein, adopt combustion powder automatic feed unit, by the automatic speed regulation of charging motor, the continuous change of the automatic control combustion inlet amount of powder and the gas measured by rare gas element producer front end and oxygen content, thus realize the Automatic adjusument of combustion powder, the perfect combustion chemical reaction carried out at a certain temperature with the oxygen in satisfied combustion powder, remaining gas, CO (carbon monoxide converter) gas and air, oxygen in mixed gas.Inactive protect effect is played in the protected space that the carbon dioxide generated through rare gas element producer is driven into coal mine gob as rare gas element after the process of device cold filtration by apparatus of the present invention; in addition, the rare gas element of generation can also be directly used in fire extinguishing by apparatus of the present invention or be stored up.And, adopt and the furnace temperature of rare gas element producer is detected and feedback, the temperature range that the perfect combustion achieving combustion powder and oxygen specifies at it, avoid the incomplete combustion of the too low generation of Yin Wendu or the reduction reaction of the too high generation of temperature, and these two kinds of situations all can produce carbon monoxide inflammable gas.
Principle of work of the present invention:
The mixed gas such as gas, carbon monoxide of protected for coal mine gob relative enclosed space is extracted out by blower fan I, through gas flow sensor and gas density and O
2gas analyzer enters rare gas element producer.Gas flow sensor and gas density and O
2gas analyzer is by surveyed data input controller; After the gas of rare gas element producer and the siccative hybrid reaction of combustion powder automatic feed unit input, enter after first step cooling filter through high-temperature check valve, enter second stage cooling filter again, through the rare gas element of first step cooling filter through air compressor machine, squeeze into gas-holder, during for combustion powder automatic feed unit feed, O simultaneously
2, oxygen content after CO gas analyzer detection reaction and carbon monoxide content input control device, controller is according to O
2, CO gas analyzer detect result, control corresponding two-position three way electrically-controlled valve and switch accordingly.
Work as O
2, the data that detect of CO gas analyzer higher than set(ting)value time, two-position three way electrically-controlled valve II is by automatic reverse, and reacted rare gas element is returned rare gas element producer by two-position three way electrically-controlled valve II again, carries out secondary reaction; Work as O
2, the data that detect of CO gas analyzer lower than set(ting)value time, two-position three way motorized valve II commutates, and the rare gas element after cold filtration is returned protected relative enclosed space through blower fan II.
In addition, the protected relative enclosed space of daily monitoring containing oxygen rate operating mode time, now as cycle operation state, only need start gas density and O
2gas analyzer and O2, CO gas analyzer, blower fan I, III, two-position three way electrically-controlled valve I is in normal open position, blower fan II cuts out automatically, in this operating mode, rare gas element producer analog channel is closed, before this, the oxygen content that two gas analyzers detect should be equal and lower than the higher limit of setting, whole device just gas passage under cycle operation state.
On the cooling filter of the second stage, be provided with temperature sensor, measure inert gas temperature, when temperature exceedes prescribed value, controller can be shut down; At rare gas element producer built with furnace temperature detection piece, control reaction furnace temperature, ensure the normal work of Reaktionsofen; On the front stage water cooler of protected relative enclosed space pipeline, safety valve being housed, ensureing that whole system is when occurring operation irregularity, can safe operation.There are working condition display interface and working condition automatic alarm and the information transmission system in controller interface, at any time system health is reported staff.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. circulation closed type coal mine gob inert gas generator, it is characterized in that: comprise aerogenesis unit, detecting unit, cooling unit and controller (10), this device is connected with the pipeline being arranged in coal mine gob in advance by import and export terminal pad (26,27), combustion powder automatic feed unit (9) that described aerogenesis unit comprises rare gas element producer (11) and is communicated with rare gas element producer (11) inside, described detecting unit comprises gas density and O
2gas analyzer (6), described cooling unit comprises at least one group of cooling filter, described gas density and O
2the inlet end of gas analyzer (6) is communicated with the protected relative enclosed space (1) in coal mine gob by blower fan I (4), its outlet side is connected by the entrance end of pipeline with two-position three way electrically-controlled valve I (8), an exit end of described two-position three way electrically-controlled valve I (8) is by pipeline and rare gas element producer (11) inlet communication, its another exit end is communicated with the protected relative enclosed space (1) in coal mine gob by blower fan III (18), the outlet of described rare gas element producer (11) is communicated with cooling unit by pipeline, described cooling unit is communicated with the protected relative enclosed space (1) in coal mine gob by blower fan II (16), described combustion powder automatic feed unit (9), gas density and O
2gas analyzer (6) and two-position three way electrically-controlled valve I (8) are connected with controller (10) respectively,
Described rare gas element producer (11) comprises the supporting seat (28) connected successively from lower to upper, main heating zone (29), secondary heating zone (30) and rare gas element flue (31), and described supporting seat (28) is provided with the main air intake terminal pad (32) be connected with two-position three way electrically-controlled valve I (8), non-inert gas secondary combustion uptake terminal pad (33) be connected with two-position three way electrically-controlled valve II (17) and fire door (34), the main process furnace inner furnace (37) that described main heating zone (29) comprises main process furnace inner furnace heat-insulation blanket (35), the outer boiler clothing (36) of main process furnace and is arranged between main process furnace inner furnace heat-insulation blanket (35) and the outer boiler clothing (36) of main process furnace, in described main heating zone (29), be provided with at least one group of resistance heating layer (38), described main heating zone (29) is provided with some fuel-feed holes (39) be connected with combustion powder automatic feed unit (9), described secondary heating zone (30) is made up of at least one section of secondary heating zone, every section of secondary heating zone comprises secondary process furnace inner furnace heat-insulation blanket (40), the outer boiler clothing (41) of secondary process furnace and the secondary process furnace inner furnace (42) be arranged between secondary process furnace inner furnace heat-insulation blanket (40) and the outer boiler clothing (41) of secondary process furnace, the secondary zone of heating (43) be made up of high temperature resistant pallet and supporting component is provided with in described every section of secondary heating zone, described secondary zone of heating (43) is provided with at least one group of iron wire volume, described every section of secondary heating zone is provided with for add iron wire volume add iron wire rolling door (44), described rare gas element flue (31) comprises funnel shaft (45) and funnel shaft heat-insulation blanket (46), described rare gas element flue (31) is provided with the chimney air flue be connected with cooling unit and exports (47).
2. circulation closed type coal mine gob according to claim 1 inert gas generator, is characterized in that: described detecting unit also comprises O
2, CO gas analyzer (7), described O
2, CO gas analyzer (7) is communicated with cooling unit by pipeline; described blower fan II (16) is connected by the entrance end of pipeline with two-position three way electrically-controlled valve II (17); an exit end of described two-position three way electrically-controlled valve II (17) is communicated with by the protected relative enclosed space (1) in pipeline and coal mine gob; its another exit end is communicated with rare gas element producer (11) by pipeline, described O
2, CO gas analyzer (7) and two-position three way electrically-controlled valve II (17) be connected with controller (10) respectively.
3. circulation closed type coal mine gob according to claim 2 inert gas generator, is characterized in that: at described blower fan I (4) and gas density and O
2the pipeline that gas analyzer (6) is communicated with is provided with the gas flow sensor (5) be connected with controller (10).
4. circulation closed type coal mine gob according to claim 2 inert gas generator, is characterized in that: in described supporting seat (28), below main heating zone (29), be provided with heat reflection material powder collector (48).
5. circulation closed type coal mine gob according to claim 4 inert gas generator, is characterized in that: be coated with refractory inorganic paint layer in the outer boiler clothing (36) of described main process furnace, the outer boiler clothing (41) of secondary process furnace and funnel shaft (45) appearance.
6. circulation closed type coal mine gob according to claim 5 inert gas generator, it is characterized in that: in described every section of secondary heating zone, be provided with furnace temperature detection piece (12), described furnace temperature detection piece (12) is connected with controller (10).
7. circulation closed type coal mine gob as claimed in any of claims 1 to 6 inert gas generator, it is characterized in that: described cooling unit comprises first step cooling filter (13) and second stage cooling filter (14), the outlet of described rare gas element producer (11) is communicated with first step cooling filter (13) by pipeline, described first step cooling filter (13) is communicated with second stage cooling filter (14) by pipeline, described second stage cooling filter (14) is communicated with by the protected relative enclosed space (1) in blower fan II (16) and coal mine gob.
8. circulation closed type coal mine gob according to claim 7 inert gas generator, it is characterized in that: described second stage cooling filter (14) is provided with temperature sensor (15), described temperature sensor (15) is connected with controller (10), and the pipeline that the outlet of described rare gas element producer (11) is communicated with first step cooling filter (13) is provided with vacuum breaker (23).
9. circulation closed type coal mine gob according to claim 8 inert gas generator, it is characterized in that: in the described coal mine gob of connection, protected relative enclosed space (1) is entered, go out end pipeline on be respectively arranged with into, exit end safety valve (21, 3) and enter, exit end ball valve (22, 2), entering of described coal mine gob protected relative enclosed space (1), go out end respectively by entering, exit end ball valve (22, 2) enter with corresponding, the safety valve (21 of exit end, 3) be communicated with, described two-position three way electrically-controlled valve II (17) is communicated with entrance end safety valve (21) by check valve (20), described first step cooling filter (13) is communicated with water cooler safety valve (19) by pipeline.
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| CN201410082359.8A CN103848423B (en) | 2014-03-07 | 2014-03-07 | Circulation closed type coal mine gob inert gas generator |
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| CN201410082359.8A CN103848423B (en) | 2014-03-07 | 2014-03-07 | Circulation closed type coal mine gob inert gas generator |
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| CN103848423B true CN103848423B (en) | 2015-11-04 |
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| CN107701163B (en) * | 2017-10-11 | 2019-05-07 | 山东科技大学 | A kind of thermal agitation cooperates the secondary permeability improvement device in coal seam and method with drilling gas explosion |
| CN112012786B (en) * | 2020-09-11 | 2022-04-26 | 安徽理工大学 | Low-gas working face goaf totally-enclosed inert gas replacement method |
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| CN2481145Y (en) * | 2001-03-29 | 2002-03-13 | 蒋习锋 | Apparatus for transforming oxygen in grain or fruit storage into carbon dioxide |
| RU2343289C2 (en) * | 2006-12-14 | 2009-01-10 | Виктор Иванович Серов | Method of pumping out, power utilisation and ecological neutralisation of mine methane |
| CN103601164A (en) * | 2013-11-14 | 2014-02-26 | 四川威特龙消防设备有限公司 | Inert gas generating device |
| CN203903999U (en) * | 2014-03-07 | 2014-10-29 | 四川威特龙消防设备有限公司 | Circular closed type coal mine goaf inert gas generation device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2481145Y (en) * | 2001-03-29 | 2002-03-13 | 蒋习锋 | Apparatus for transforming oxygen in grain or fruit storage into carbon dioxide |
| RU2343289C2 (en) * | 2006-12-14 | 2009-01-10 | Виктор Иванович Серов | Method of pumping out, power utilisation and ecological neutralisation of mine methane |
| CN103601164A (en) * | 2013-11-14 | 2014-02-26 | 四川威特龙消防设备有限公司 | Inert gas generating device |
| CN203903999U (en) * | 2014-03-07 | 2014-10-29 | 四川威特龙消防设备有限公司 | Circular closed type coal mine goaf inert gas generation device |
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Address after: 611731 Chengdu high tech West West Road, No. 99, attached to No. 9, No. Applicant after: Witter joint-stock company of dragon security against fire group Address before: 611731 Chengdu high tech West West Road, No. 99, attached to No. 9, No. Applicant before: Sichuan Weitelong Fire Fighting Equipment Co., Ltd. |
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