CN110743124A - Hot aerosol fire extinguishing agent and hot aerosol fire extinguishing device suitable for goaf - Google Patents
Hot aerosol fire extinguishing agent and hot aerosol fire extinguishing device suitable for goaf Download PDFInfo
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- CN110743124A CN110743124A CN201910868315.0A CN201910868315A CN110743124A CN 110743124 A CN110743124 A CN 110743124A CN 201910868315 A CN201910868315 A CN 201910868315A CN 110743124 A CN110743124 A CN 110743124A
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- fire extinguishing
- hot aerosol
- aerosol fire
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/06—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires containing gas-producing, chemically-reactive components
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/08—Rock dusting of mines; Depositing other protective substances
Abstract
The invention relates to the technical field of aerosol fire extinguishing, in particular to a hot aerosol fire extinguishing agent and a hot aerosol fire extinguishing device for coal spontaneous combustion. The hot aerosol fire extinguishing agent comprises 50-65% of oxidant, 25-40% of combustible and 10% of additive by mass. The fire extinguishing agent is arranged in the fire extinguishing device, and the fire extinguishing device comprises a temperature sensing glass ball and a current pulse generator, wherein the current pulse generator further comprises a pressure sensor, a signal receiving unit and the like. The hot aerosol fire extinguishing agent has high burning speed and low burning temperature, can quickly generate aerosol to achieve better fire extinguishing effect, and can effectively avoid other disasters caused by high temperature. This aerosol extinguishing device can not only realize the automatic fire extinguishing function, can also realize remote control, has solved the work of putting out a fire at dangerous working face, and the aerosol extinguishing agent burning rate among this extinguishing device is fast and combustion temperature is low.
Description
Technical Field
The invention relates to the technical field of aerosol fire extinguishing, in particular to a hot aerosol fire extinguishing agent and a hot aerosol fire extinguishing device suitable for a goaf.
Background
The goaf is one of the areas in the coal mine where spontaneous combustion of coal is more likely to occur, and according to statistics, the number of spontaneous combustion fires of coal occurring in the goaf of the national key coal mine accounts for 60% of the total number of spontaneous combustion fires of coal. According to the research of scholars at home and abroad on stope air leakage, a goaf is divided into three air leakage zones, namely 'non-spontaneous combustion zones', the air leakage zones are close to a working face mining space, and the width of the air leakage zones generally extends to within 5-25 m towards the inside of the goaf; the spontaneous combustion zone is approximately positioned in the range of extending 25-60 m from the non-spontaneous combustion zone to the interior of the goaf; the 'choking zone' is positioned in the goaf behind the spontaneous combustion zone. The fire prevention and extinguishing work of the goaf is mainly researched aiming at a spontaneous combustion zone.
The aerosol fire extinguishing technology is a novel fire extinguishing technology developed on the basis of military firework technology, and has attracted attention due to high fire extinguishing efficiency, no harm to human bodies, small using amount of fire extinguishers, environmental friendliness, simplicity and convenience in installation and low maintenance cost. The hot aerosol fire extinguishing agent is one of aerosol fire extinguishing agent types, and extinguishes fire by generating a large amount of aerosol gas through the combustion of the fire extinguishing agent, wherein the aerosol gas has small specific gravity which is slightly heavier than air, firstly floats to the top of a goaf, and then gradually sinks to the bottom of the goaf, so that the whole ignition space can be filled.
The existing aerosol has slow burning speed and high burning temperature, is difficult to avoid causing other disasters and often causes unnecessary loss; and current aerosol extinguishing device realizes the electricity through setting up current pulse generator and starts, and aerosol extinguishing device realizes sending current pulse to extinguishing device inside through pressing the button on the current pulse generator, realizes the function of putting out a fire, so current aerosol extinguishing device has certain defect, need carry out the fire control through the people closely operation to the position of catching a fire and put out a fire, nevertheless because its place of action is often very dangerous, to the staff, service environment can threaten self life safety.
Disclosure of Invention
The invention aims to solve the technical problems that the existing aerosol fire extinguishing device needs to be operated in a close range because of low burning speed and high burning temperature of the existing aerosol. Therefore, the invention provides a hot aerosol fire extinguishing agent and a hot aerosol fire extinguishing device suitable for a goaf.
The technical scheme adopted by the invention for solving the technical problems is as follows: the hot aerosol fire extinguishing agent comprises 50-65% of oxidant, 25-40% of combustible and 10% of additive in percentage by mass.
Preferably, the oxidant uses strontium nitrate as a main oxidant and potassium perchlorate as an auxiliary oxidant; the combustible is one or a combination of more of guanidine nitrate, oxamide, melamine, lactose, potassium citrate, inositol, naphthalene or potassium hydrogen phthalate; the additive comprises a binder, a temperature regulator and a combustion speed regulator, wherein the binder is phenolic resin, the temperature regulator is one or a combination of more of potassium picrate, ferrocene, ammonium oxalate, potassium bicarbonate or potassium hydrogen phthalate, and the combustion speed regulator is one or a combination of more of potassium oxalate, ammonium oxalate, nitroguanidine, potassium hydrogen phthalate or potassium tartrate.
The hot aerosol fire extinguishing agent disclosed by the invention is high in combustion speed and low in combustion temperature, and the combustion speed is increased by 0.1-0.56 g/(cm)2S), the temperature is reduced by 30-200 ℃, aerosol can be generated more quickly to achieve a better fire extinguishing effect, and other disasters caused by high temperature can be effectively avoided.
The invention also provides a hot aerosol fire extinguishing device suitable for the goaf, which comprises a shell, wherein a cavity for containing the hot aerosol fire extinguishing agent is arranged in the shell, a pneumatic piston communicated with the cavity is arranged on the shell, the shell comprises an exhaust hole communicated with the cavity, a first mounting seat is fixed on the periphery of the exhaust hole, a sealing plug for covering the exhaust hole is in clearance fit in the first mounting seat, second mounting seats positioned opposite to the exhaust hole are supported on the shell on two sides of the first mounting seat through at least two support rods, a cushion block is in clearance fit in the second mounting seat, a temperature sensing glass ball vertical to the outer wall of the shell is arranged between the sealing plug and the cushion block, and the temperature sensing glass ball, the sealing plug and the cushion block are in extrusion fit; the current pulse generator is arranged on the second mounting seat and further comprises a pressure sensor, a signal receiving unit, a PLC (programmable logic controller) and a relay, a normally open contact of the relay is connected to a loop of the current pulse generator, and the PLC is respectively connected with the pressure sensor, the signal receiving unit and the relay; the pressure sensor is arranged between the cushion block and the second mounting seat; the pulse output end of the current pulse generator is connected to the inside of the cavity through a wire, the signal receiving unit is arranged on the second mounting seat and matched with the signal transmitting unit, and the signal transmitting unit is controlled by the electric cabinet through a cable.
In the hot aerosol fire extinguishing device, the temperature sensing glass ball tightly supports the sealing plug and the cushion block, when the temperature sensing glass ball is broken, extrusion force for the sealing plug and the cushion block disappears, the sealing plug and the cushion block are loosened, the working principle of a loop of the current pulse generator per se is well known by technical personnel in the field, detailed description is not provided in the application, when the cushion block is loosened, pressure between the cushion block and the second mounting seat is changed, the pressure sensor detects pressure change and transmits a pressure signal to the PLC controller, the PLC controller judges, if the pressure signal exceeds a normal range, the PLC controller controls a normally open contact of a relay to be closed, and the current pulse generator is triggered; the signal receiving unit is matched with the signal transmitting unit, the signal transmitting unit is installed near the hot aerosol fire extinguishing device, when the monitoring room detects abnormality, the signal transmitting unit is controlled to transmit an electric signal through the electric cabinet, after the signal receiving unit detects the electric signal, the signal is transmitted to the PLC controller, the PLC controller controls the normally open contact of the relay to be closed, and the current pulse generator is triggered; the current pulse generator can send current pulses, the current pulses can enable hot aerosol to react to generate a large amount of aerosol, and the aerosol can be discharged from the pneumatic piston or the exhaust hole, so that the fire extinguishing effect is achieved. Wherein the PLC controller controls the relay through the pressure sensor and the signal receiving unit is well known to those skilled in the art, and the related control software is also well known to those skilled in the art, so the present invention will not be described in detail.
The automatic starting principle of the hot aerosol fire extinguishing device comprises the following steps: a plurality of hot aerosol extinguishing devices are arranged in a spontaneous combustion zone of a coal mine goaf, when spontaneous combustion occurs in the goaf, the environmental temperature of the goaf rises, when the temperature reaches the corresponding temperature of a temperature sensing glass ball, organic solution in the glass ball is heated to expand to cause the glass ball to break, so that sealing plugs and cushion blocks abutting against two ends of the temperature sensing glass ball loosen, after the cushion blocks loosen, the pressure between the cushion blocks and a second mounting seat changes, a pressure sensor detects the pressure change and transmits a pressure signal to a PLC (programmable logic controller), the PLC judges, if the pressure signal exceeds a normal range, the PLC controls a normally open contact of a relay to be closed, a current pulse generator is triggered, a current pulse is transmitted to a hot aerosol extinguishing agent in a cavity along a lead, so that the hot aerosol extinguishing agent rapidly reacts to generate aerosol, a large amount of aerosol can impact a pneumatic piston and the loosened sealing plugs, the pneumatic piston and the exhaust port are both opened, then the aerosol is discharged from the pneumatic piston port and the exhaust hole and is rapidly diffused to the goaf, and the fire extinguishing effect is achieved.
The manual starting principle of the hot aerosol fire extinguishing device comprises the following steps: when the working personnel detect the abnormality of the environmental temperature and the like, the working personnel can start an electric cabinet in a control room to control a signal transmitting unit to transmit an electric signal, a signal receiving unit transmits the signal to a PLC (programmable logic controller) after detecting the electric signal, the PLC controls a normally open contact of a relay to be closed, a current pulse generator is triggered, current pulses are transmitted to a hot aerosol fire extinguishing agent in a cavity along a lead, the hot aerosol fire extinguishing agent rapidly reacts to generate aerosol, a large amount of aerosol can impact a pneumatic piston to open the pneumatic piston, and then the aerosol is discharged from the pneumatic piston to rapidly diffuse to a goaf so as to achieve the fire extinguishing effect; the hardness of the temperature sensing glass ball can support the sealing plug, so that the sealing plug cannot fall off.
Preferably, the sealing plug and the cushion block are provided with grooves matched with the end parts of the temperature sensing glass balls. The groove can prevent the temperature sensing glass ball from slipping under the condition of inclination, so that the structure of the hot aerosol fire extinguishing device is firmer.
The hot aerosol fire extinguishing device suitable for the goaf can realize an automatic fire extinguishing function and remote control, is arranged in a place where workers in the coal mine goaf cannot enter, and solves the problem of fire extinguishing on a dangerous working surface.
Drawings
FIG. 1 is a schematic view of the overall structure of a hot aerosol fire extinguishing apparatus for a goaf according to the present invention;
fig. 2 is a partial structural schematic diagram of the hot aerosol fire extinguishing device applicable to the goaf.
FIG. 3 is a schematic view of the installation of the hot aerosol fire extinguishing device suitable for the goaf in the spontaneous combustion zone of the goaf of the coal mine.
In the figure: 1-a shell; 2-a pneumatic piston; 3-air exhaust holes; 4-a first mount; 5-sealing the plug; 6-supporting rods; 7-a second mount; 8-cushion block; 9-temperature sensing glass ball; 10-a current pulse generator; 11-a pressure sensor; 12-a wire; 13-a signal receiving unit; 14-a signal transmitting unit; 15-a cable; 16-an electric cabinet; 17-hot aerosol fire extinguishing device.
Detailed Description
Referring to fig. 1, 2 and 3, a hot aerosol fire extinguishing apparatus for a gob according to the present invention will now be described.
The hot aerosol fire extinguishing agent comprises 50-65% of oxidant, 25-40% of combustible and 10% of additive in percentage by mass.
Further, as a specific embodiment of the hot aerosol fire extinguishing agent, strontium nitrate is used as a main oxidant, and potassium perchlorate is used as an auxiliary oxidant; the combustible is one or a combination of more of guanidine nitrate, oxamide, melamine, lactose, potassium citrate, inositol, naphthalene or potassium hydrogen phthalate; the additive comprises a binder, a temperature regulator and a combustion speed regulator, wherein the binder is phenolic resin, the temperature regulator is one or a combination of more of potassium picrate, ferrocene, ammonium oxalate, potassium bicarbonate or potassium hydrogen phthalate, and the combustion speed regulator is one or a combination of more of potassium oxalate, ammonium oxalate, nitroguanidine, potassium hydrogen phthalate or potassium tartrate.
The hot aerosol fire extinguishing agent disclosed by the invention is high in combustion speed and low in combustion temperature, and the combustion speed is increased by 0.1-0.56 g/(cm)2S), the temperature is reduced by 30-200 ℃, aerosol can be generated more quickly to achieve a better fire extinguishing effect, and other disasters caused by high temperature can be effectively avoided.
Example 1: a hot aerosol fire extinguishing agent comprises 50-65% of oxidant, 25-40% of combustible and 10% of additive by mass percentage; the oxidant comprises 35% of strontium nitrate and 15% of potassium perchlorate by mass percent; the combustible material comprises 40% of lactose by mass, and the additive comprises 2% of phenolic resin, 2% of potassium picrate, 2% of ferrocene, 2% of potassium oxalate and 2% of potassium hydrogen phthalate by mass.
Example 2: a hot aerosol fire extinguishing agent comprises 50-65% of oxidant, 25-40% of combustible and 10% of additive by mass percentage; the oxidant comprises 50% of strontium nitrate and 15% of potassium perchlorate by mass percentage; the combustible comprises 25 mass percent of oxamide; the additive comprises 4% of phenolic resin, 2% of potassium bicarbonate, 2% of ammonium oxalate and 2% of nitroguanidine by mass percent.
Example 3: a hot aerosol fire extinguishing agent comprises 50-65% of oxidant, 25-40% of combustible and 10% of additive by mass percentage; the oxidant comprises 40% of strontium nitrate and 15% of potassium perchlorate by mass percent; the fuel comprises 20 mass percent of guanidine nitrate and 15 mass percent of melamine; the additive comprises 4% of phenolic resin, 2% of potassium bicarbonate and 4% of potassium tartrate by mass.
The hot aerosol fire extinguishing device suitable for the goaf comprises a shell 1, a pneumatic piston 2 communicated with a cavity is arranged in the shell 1, the shell 1 comprises an exhaust hole 3 communicated with the cavity, a first mounting seat 4 is circumferentially fixed on the exhaust hole 3, a sealing plug 5 covering the exhaust hole 3 is in clearance fit in the first mounting seat 4, a second mounting seat 7 opposite to the exhaust hole 3 is supported on the shell 1 on two sides of the first mounting seat 4 through at least two support rods 6, a cushion block 8 is in clearance fit in the second mounting seat 7, a temperature sensing glass ball 9 perpendicular to the outer wall of the shell 1 is arranged between the sealing plug 5 and the cushion block 8, and the temperature sensing glass ball 9 is in extrusion fit with the sealing plug 5 and the cushion block 8; the current pulse generator 10 is arranged on the second mounting seat 7, the current pulse generator 10 further comprises a pressure sensor 11, a signal receiving unit 13, a PLC controller and a relay, a normally open contact of the relay is connected to a loop of the current pulse generator 10, and the PLC controller is respectively connected with the pressure sensor 11, the signal receiving unit 13 and the relay; the pressure sensor 11 is arranged between the cushion block 8 and the second mounting seat 7; the pulse output end of the current pulse generator 10 is connected to the inside of the cavity through a wire 12, the signal receiving unit 13 is arranged on the second mounting seat 7, the signal receiving unit 13 is matched with a signal transmitting unit 14, and the signal transmitting unit 14 is controlled by an electric cabinet 16 through a cable 15.
In the hot aerosol fire extinguishing device, the temperature sensing glass ball 9 tightly supports the sealing plug 5 and the cushion block 8, when the temperature sensing glass ball 9 is broken, extrusion force for the sealing plug 5 and the cushion block 8 disappears, the sealing plug 5 and the cushion block 8 are loosened, the working principle of a loop of the current pulse generator 10 per se is well known by a person skilled in the art, detailed description is not provided in the application, when the cushion block 8 is loosened, pressure between the cushion block 8 and the second mounting seat 7 is changed, the pressure sensor 11 detects pressure change and transmits a pressure signal to the PLC controller, the PLC controller judges, if the pressure signal exceeds a normal range, the PLC controller controls a normally open contact of a relay to be closed, and the current pulse generator 10 is triggered; the signal receiving unit 13 is matched with a signal transmitting unit 14, the signal transmitting unit 14 is installed near the hot aerosol fire extinguishing device, when the monitoring room detects abnormality, the electric cabinet 16 controls the signal transmitting unit 14 to transmit electric signals, after the signal receiving unit 13 detects the electric signals, the signals are transmitted to the PLC controller, the PLC controller controls the normally open contact of the relay to be closed, and the current pulse generator 10 is triggered; the current pulse generator 10 can send current pulses, the current pulses can enable hot aerosol to react to generate a large amount of aerosol, and the aerosol can be discharged from the pneumatic piston 2 or the exhaust hole 3, so that the fire extinguishing effect is achieved.
The automatic starting principle of the hot aerosol fire extinguishing device comprises the following steps: a plurality of hot aerosol extinguishing devices are arranged in a spontaneous combustion zone of a coal mine goaf, when spontaneous combustion occurs in the goaf, the environmental temperature of the goaf rises, when the temperature reaches the corresponding temperature of a temperature sensing glass ball 9, organic solution in the glass ball is heated to expand to cause the glass ball to break, so that a sealing plug 5 and a cushion block 8 which are abutted against two ends of the temperature sensing glass ball 9 are loosened, after the cushion block 8 is loosened, the pressure between the cushion block 8 and a second mounting seat 7 is changed, a pressure sensor 11 detects the pressure change and transmits a pressure signal to a PLC (programmable logic controller), the PLC judges, if the pressure signal exceeds a normal range, the PLC controls a normally open contact of a relay to be closed, a current pulse generator 10 is triggered, a current pulse is transmitted to a hot aerosol extinguishing agent in a cavity along a lead 12, and the hot aerosol extinguishing agent is rapidly reacted to generate aerosol, a large amount of aerosol can impact the pneumatic piston 2 and the loosened sealing plug 5, the pneumatic piston 2 and the exhaust port are both opened, and then the aerosol is discharged from the pneumatic piston 2 port and the exhaust port 3 and is rapidly diffused to a goaf, so that the fire extinguishing effect is achieved.
The manual starting principle of the hot aerosol fire extinguishing device comprises the following steps: when the working personnel detect the abnormality of the environmental temperature and the like, the working personnel can start an electric control box 16 in a control room to control a signal transmitting unit 14 to transmit an electric signal, after a signal receiving unit 13 detects the electric signal, the signal is transmitted to a PLC (programmable logic controller), the PLC controls the normally open contact of a relay to be closed, a current pulse generator 10 is triggered, current pulses are transmitted to a hot aerosol fire extinguishing agent in a cavity along a lead 12, the hot aerosol fire extinguishing agent reacts rapidly to generate aerosol, a large amount of aerosol impacts a pneumatic piston 2 to open the pneumatic piston 2, and then the aerosol is discharged from the opening of the pneumatic piston 2 and rapidly diffuses to a goaf to achieve the effect of fire extinguishing; the hardness of the temperature sensing glass ball 9 can support the sealing plug 5, so that the sealing plug 5 cannot fall off.
Further, according to a specific embodiment of the hot aerosol fire extinguishing device suitable for the goaf spontaneous combustion zone, as shown in fig. 2, grooves matched with the end portions of the temperature sensing glass balls 9 are formed in the sealing plugs 5 and the cushion blocks 8. The groove can prevent the temperature sensing glass ball 9 from slipping under the condition of inclination, so that the structure of the hot aerosol fire extinguishing device is firmer.
Further, according to the specific implementation mode of the hot aerosol fire extinguishing device applicable to the goaf spontaneous combustion zone, the response temperature of the organic solution in the temperature-sensitive glass ball 9 is 68 ℃. When the environmental temperature reaches above 68 ℃, the glass is crushed by the heated expansion of the organic solvent in the temperature sensing glass ball 9.
Further, according to the specific implementation mode of the hot aerosol fire extinguishing device suitable for the spontaneous combustion zone of the goaf, the sealing plug 5 is T-shaped, and the cushion block 8 is sheet-shaped; the vertical part of the sealing plug 5 extends into the exhaust hole 3, and the horizontal part of the sealing plug is larger than the exhaust hole 3 and is positioned outside the exhaust hole 3. The transverse part of the sealing plug 5, which is larger than the exhaust port, has a sealing effect on the exhaust port, but after the temperature sensing glass ball 9 is broken, the sealing plug 5 is easy to loosen, so that aerosol is conveniently discharged.
Example (b): the hot aerosol fire extinguishing device 17 is arranged on two sides of a spontaneous combustion zone of a goaf at intervals, the signal transmitting device 14 is arranged in the middle of the spontaneous combustion zone on the air inlet side, the hot aerosol fire extinguishing device 17 is arranged around the signal transmitting device 14, the signal transmitting device 14 is controlled by an electric cabinet 16 of a monitoring room through a cable 15, when an accident occurs, the signal transmitting device 14 can be controlled remotely, the purpose of triggering the hot aerosol fire extinguishing device 17 can be achieved, the short-distance operation of workers is effectively avoided, and the accident is prevented.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The hot aerosol fire extinguishing agent is characterized by comprising 50-65% of oxidant, 25-40% of combustible and 10% of additive in percentage by mass.
2. A hot aerosol fire extinguishing agent according to claim 1, characterized in that: the oxidant takes strontium nitrate as a main oxidant and potassium perchlorate as an auxiliary oxidant; the combustible is one or a combination of more of guanidine nitrate, oxamide, melamine, lactose, potassium citrate, inositol, naphthalene or potassium hydrogen phthalate; the additive comprises a binder, a temperature regulator and a combustion speed regulator, wherein the binder is phenolic resin, the temperature regulator is one or a combination of more of potassium picrate, ferrocene, ammonium oxalate, potassium bicarbonate or potassium hydrogen phthalate, and the combustion speed regulator is one or a combination of more of potassium oxalate, ammonium oxalate, nitroguanidine, potassium hydrogen phthalate or potassium tartrate.
3. A hot aerosol fire extinguishing agent according to claim 2, characterized in that: the oxidant comprises 35% of strontium nitrate and 15% of potassium perchlorate by mass percent; the combustible material comprises 40% of lactose by mass, and the additive comprises 2% of phenolic resin, 2% of potassium picrate, 2% of ferrocene, 2% of potassium oxalate and 2% of potassium hydrogen phthalate by mass.
4. A hot aerosol fire extinguishing agent according to claim 2, characterized in that: the oxidant comprises 50% of strontium nitrate and 15% of potassium perchlorate by mass percentage; the combustible comprises 25 mass percent of oxamide; the additive comprises 4% of phenolic resin, 2% of potassium bicarbonate, 2% of ammonium oxalate and 2% of nitroguanidine by mass percent.
5. A hot aerosol fire extinguishing agent according to claim 2, characterized in that: the oxidant comprises 40% of strontium nitrate and 15% of potassium perchlorate by mass percent; the fuel comprises 20 mass percent of guanidine nitrate and 15 mass percent of melamine; the additive comprises 4% of phenolic resin, 2% of potassium bicarbonate and 4% of potassium tartrate by mass.
6. A hot aerosol fire extinguishing device suitable for a goaf comprises a shell (1) and a current pulse generator (10), wherein a cavity for containing the hot aerosol fire extinguishing agent is arranged in the shell, the hot aerosol fire extinguishing device is characterized in that a pneumatic piston (2) communicated with the cavity is arranged on the shell (1), the shell (1) comprises an exhaust hole (3) communicated with the cavity, a first mounting seat (4) is fixed on the periphery of the exhaust hole (3), a sealing plug (5) covering the exhaust hole (3) is in clearance fit in the first mounting seat (4), a second mounting seat (7) opposite to the exhaust hole (3) is supported on the shell (1) on two sides of the first mounting seat (4) through at least two support rods (6), and a cushion block (8) is in clearance fit in the second mounting seat (7), a temperature sensing glass ball (9) perpendicular to the outer wall of the shell (1) is arranged between the sealing plug (5) and the cushion block (8), and the temperature sensing glass ball (9), the sealing plug (5) and the cushion block (8) are in extrusion fit; the current pulse generator (10) is arranged on the second mounting seat (7), the current pulse generator (10) further comprises a pressure sensor (11), a signal receiving unit (13), a PLC (programmable logic controller) and a relay, a normally open contact of the relay is connected to a loop of the current pulse generator (10), and the PLC is respectively connected with the pressure sensor (11), the signal receiving unit (13) and the relay; the pressure sensor (11) is arranged between the cushion block (8) and the second mounting seat (7); the pulse output end of the current pulse generator (10) is connected to the inside of the cavity through a lead (12), the signal receiving unit (13) is arranged on the second mounting seat (7), the signal receiving unit (13) is matched with the signal transmitting unit (14), and the signal transmitting unit (14) is controlled by the electric cabinet (16) through a cable (15).
7. The hot aerosol fire extinguishing device for the goaf according to claim 6, wherein the sealing plug (5) and the cushion block (8) are provided with grooves matched with the end of the temperature sensing glass ball (9).
8. The hot aerosol fire extinguishing apparatus for a gob according to claim 7, wherein the response temperature of the organic solution in the temperature sensitive glass bead (9) is 68 ℃.
9. The hot aerosol fire extinguishing apparatus for goaf according to claim 8, wherein the sealing plug (5) is T-shaped, and the cushion block (8) is sheet-shaped; the vertical part of the sealing plug (5) extends into the exhaust hole (3), and the transverse part of the sealing plug is larger than the exhaust hole (3) and is positioned outside the exhaust hole (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910868315.0A CN110743124A (en) | 2019-09-16 | 2019-09-16 | Hot aerosol fire extinguishing agent and hot aerosol fire extinguishing device suitable for goaf |
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| CN201910868315.0A CN110743124A (en) | 2019-09-16 | 2019-09-16 | Hot aerosol fire extinguishing agent and hot aerosol fire extinguishing device suitable for goaf |
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| CN101554520A (en) * | 2009-05-26 | 2009-10-14 | 胡永华 | Steam hot aerosol fire-extinguishing composite and application method and fire extinguishing device thereof |
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| CN104998367A (en) * | 2014-04-17 | 2015-10-28 | 北京众慧诚科技有限公司 | Burning type fire extinguishing composition |
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